NAudio
a-law decoder
based on code from:
http://hazelware.luggle.com/tutorials/mulawcompression.html
only 512 bytes required, so just use a lookup
Converts an a-law encoded byte to a 16 bit linear sample
a-law encoded byte
Linear sample
A-law encoder
Encodes a single 16 bit sample to a-law
16 bit PCM sample
a-law encoded byte
SpanDSP - a series of DSP components for telephony
g722_decode.c - The ITU G.722 codec, decode part.
Written by Steve Underwood <steveu@coppice.org>
Copyright (C) 2005 Steve Underwood
Ported to C# by Mark Heath 2011
Despite my general liking of the GPL, I place my own contributions
to this code in the public domain for the benefit of all mankind -
even the slimy ones who might try to proprietize my work and use it
to my detriment.
Based in part on a single channel G.722 codec which is:
Copyright (c) CMU 1993
Computer Science, Speech Group
Chengxiang Lu and Alex Hauptmann
hard limits to 16 bit samples
Decodes a buffer of G722
Codec state
Output buffer (to contain decompressed PCM samples)
Number of bytes in input G722 data to decode
Number of samples written into output buffer
Encodes a buffer of G722
Codec state
Output buffer (to contain encoded G722)
PCM 16 bit samples to encode
Number of samples in the input buffer to encode
Number of encoded bytes written into output buffer
Stores state to be used between calls to Encode or Decode
Creates a new instance of G722 Codec State for a
new encode or decode session
Bitrate (typically 64000)
Special options
ITU Test Mode
TRUE if the operating in the special ITU test mode, with the band split filters disabled.
TRUE if the G.722 data is packed
8kHz Sampling
TRUE if encode from 8k samples/second
Bits Per Sample
6 for 48000kbps, 7 for 56000kbps, or 8 for 64000kbps.
Signal history for the QMF (x)
Band
In bit buffer
Number of bits in InBuffer
Out bit buffer
Number of bits in OutBuffer
Band data for G722 Codec
s
sp
sz
r
a
ap
p
d
b
bp
sg
nb
det
G722 Flags
None
Using a G722 sample rate of 8000
Packed
mu-law decoder
based on code from:
http://hazelware.luggle.com/tutorials/mulawcompression.html
only 512 bytes required, so just use a lookup
Converts a mu-law encoded byte to a 16 bit linear sample
mu-law encoded byte
Linear sample
mu-law encoder
based on code from:
http://hazelware.luggle.com/tutorials/mulawcompression.html
Encodes a single 16 bit sample to mu-law
16 bit PCM sample
mu-law encoded byte
Audio Capture Client
Gets a pointer to the buffer
Pointer to the buffer
Gets a pointer to the buffer
Number of frames to read
Buffer flags
Pointer to the buffer
Gets the size of the next packet
Release buffer
Number of frames written
Release the COM object
Windows CoreAudio AudioClient
Initializes the Audio Client
Share Mode
Stream Flags
Buffer Duration
Periodicity
Wave Format
Audio Session GUID (can be null)
Determines whether if the specified output format is supported
The share mode.
The desired format.
True if the format is supported
Determines if the specified output format is supported in shared mode
Share Mode
Desired Format
Output The closest match format.
True if the format is supported
Starts the audio stream
Stops the audio stream.
Set the Event Handle for buffer synchro.
The Wait Handle to setup
Resets the audio stream
Reset is a control method that the client calls to reset a stopped audio stream.
Resetting the stream flushes all pending data and resets the audio clock stream
position to 0. This method fails if it is called on a stream that is not stopped
Dispose
Retrieves the stream format that the audio engine uses for its internal processing of shared-mode streams.
Can be called before initialize
Retrieves the size (maximum capacity) of the audio buffer associated with the endpoint. (must initialize first)
Retrieves the maximum latency for the current stream and can be called any time after the stream has been initialized.
Retrieves the number of frames of padding in the endpoint buffer (must initialize first)
Retrieves the length of the periodic interval separating successive processing passes by the audio engine on the data in the endpoint buffer.
(can be called before initialize)
Gets the minimum device period
(can be called before initialize)
Returns the AudioStreamVolume service for this AudioClient.
This returns the AudioStreamVolume object ONLY for shared audio streams.
This is thrown when an exclusive audio stream is being used.
Gets the AudioClockClient service
Gets the AudioRenderClient service
Gets the AudioCaptureClient service
Audio Client Buffer Flags
None
AUDCLNT_BUFFERFLAGS_DATA_DISCONTINUITY
AUDCLNT_BUFFERFLAGS_SILENT
AUDCLNT_BUFFERFLAGS_TIMESTAMP_ERROR
The AudioClientProperties structure is used to set the parameters that describe the properties of the client's audio stream.
http://msdn.microsoft.com/en-us/library/windows/desktop/hh968105(v=vs.85).aspx
The size of the buffer for the audio stream.
Boolean value to indicate whether or not the audio stream is hardware-offloaded
An enumeration that is used to specify the category of the audio stream.
A bit-field describing the characteristics of the stream. Supported in Windows 8.1 and later.
AUDCLNT_SHAREMODE
AUDCLNT_SHAREMODE_SHARED,
AUDCLNT_SHAREMODE_EXCLUSIVE
AUDCLNT_STREAMFLAGS
None
AUDCLNT_STREAMFLAGS_CROSSPROCESS
AUDCLNT_STREAMFLAGS_LOOPBACK
AUDCLNT_STREAMFLAGS_EVENTCALLBACK
AUDCLNT_STREAMFLAGS_NOPERSIST
Defines values that describe the characteristics of an audio stream.
No stream options.
The audio stream is a 'raw' stream that bypasses all signal processing except for endpoint specific, always-on processing in the APO, driver, and hardware.
Audio Clock Client
Get Position
Dispose
Characteristics
Frequency
Adjusted Position
Can Adjust Position
Audio Endpoint Volume Channel
Volume Level
Volume Level Scalar
Audio Endpoint Volume Channels
Channel Count
Indexer - get a specific channel
Audio Endpoint Volume Notifiaction Delegate
Audio Volume Notification Data
Audio Endpoint Volume Step Information
Step
StepCount
Audio Endpoint Volume Volume Range
Minimum Decibels
Maximum Decibels
Increment Decibels
Audio Meter Information Channels
Metering Channel Count
Get Peak value
Channel index
Peak value
Audio Render Client
Gets a pointer to the buffer
Number of frames requested
Pointer to the buffer
Release buffer
Number of frames written
Buffer flags
Release the COM object
AudioSessionControl object for information
regarding an audio session
Constructor.
Dispose
Finalizer
the grouping param for an audio session grouping
For chanigng the grouping param and supplying the context of said change
Registers an even client for callbacks
Unregisters an event client from receiving callbacks
Audio meter information of the audio session.
Simple audio volume of the audio session (for volume and mute status).
The current state of the audio session.
The name of the audio session.
the path to the icon shown in the mixer.
The session identifier of the audio session.
The session instance identifier of the audio session.
The process identifier of the audio session.
Is the session a system sounds session.
AudioSessionEvents callback implementation
Windows CoreAudio IAudioSessionControl interface
Defined in AudioPolicy.h
Notifies the client that the display name for the session has changed.
The new display name for the session.
A user context value that is passed to the notification callback.
An HRESULT code indicating whether the operation succeeded of failed.
Notifies the client that the display icon for the session has changed.
The path for the new display icon for the session.
A user context value that is passed to the notification callback.
An HRESULT code indicating whether the operation succeeded of failed.
Notifies the client that the volume level or muting state of the session has changed.
The new volume level for the audio session.
The new muting state.
A user context value that is passed to the notification callback.
An HRESULT code indicating whether the operation succeeded of failed.
Notifies the client that the volume level of an audio channel in the session submix has changed.
The channel count.
An array of volumnes cooresponding with each channel index.
The number of the channel whose volume level changed.
A user context value that is passed to the notification callback.
An HRESULT code indicating whether the operation succeeded of failed.
Notifies the client that the grouping parameter for the session has changed.
The new grouping parameter for the session.
A user context value that is passed to the notification callback.
An HRESULT code indicating whether the operation succeeded of failed.
Notifies the client that the stream-activity state of the session has changed.
The new session state.
An HRESULT code indicating whether the operation succeeded of failed.
Notifies the client that the session has been disconnected.
The reason that the audio session was disconnected.
An HRESULT code indicating whether the operation succeeded of failed.
Constructor.
Notifies the client that the display name for the session has changed.
The new display name for the session.
A user context value that is passed to the notification callback.
An HRESULT code indicating whether the operation succeeded of failed.
Notifies the client that the display icon for the session has changed.
The path for the new display icon for the session.
A user context value that is passed to the notification callback.
An HRESULT code indicating whether the operation succeeded of failed.
Notifies the client that the volume level or muting state of the session has changed.
The new volume level for the audio session.
The new muting state.
A user context value that is passed to the notification callback.
An HRESULT code indicating whether the operation succeeded of failed.
Notifies the client that the volume level of an audio channel in the session submix has changed.
The channel count.
An array of volumnes cooresponding with each channel index.
The number of the channel whose volume level changed.
A user context value that is passed to the notification callback.
An HRESULT code indicating whether the operation succeeded of failed.
Notifies the client that the grouping parameter for the session has changed.
The new grouping parameter for the session.
A user context value that is passed to the notification callback.
An HRESULT code indicating whether the operation succeeded of failed.
Notifies the client that the stream-activity state of the session has changed.
The new session state.
An HRESULT code indicating whether the operation succeeded of failed.
Notifies the client that the session has been disconnected.
The reason that the audio session was disconnected.
An HRESULT code indicating whether the operation succeeded of failed.
AudioSessionManager
Designed to manage audio sessions and in particuar the
SimpleAudioVolume interface to adjust a session volume
Refresh session of current device.
Dispose.
Finalizer.
Occurs when audio session has been added (for example run another program that use audio playback).
SimpleAudioVolume object
for adjusting the volume for the user session
AudioSessionControl object
for registring for callbacks and other session information
Returns list of sessions of current device.
Windows CoreAudio IAudioSessionNotification interface
Defined in AudioPolicy.h
session being added
An HRESULT code indicating whether the operation succeeded of failed.
Specifies the category of an audio stream.
Other audio stream.
Media that will only stream when the app is in the foreground.
Media that can be streamed when the app is in the background.
Real-time communications, such as VOIP or chat.
Alert sounds.
Sound effects.
Game sound effects.
Background audio for games.
Manages the AudioStreamVolume for the .
Verify that the channel index is valid.
Return the current stream volumes for all channels
An array of volume levels between 0.0 and 1.0 for each channel in the audio stream.
Return the current volume for the requested channel.
The 0 based index into the channels.
The volume level for the channel between 0.0 and 1.0.
Set the volume level for each channel of the audio stream.
An array of volume levels (between 0.0 and 1.0) one for each channel.
A volume level MUST be supplied for reach channel in the audio stream.
Thrown when does not contain elements.
Sets the volume level for one channel in the audio stream.
The 0-based index into the channels to adjust the volume of.
The volume level between 0.0 and 1.0 for this channel of the audio stream.
Dispose
Release/cleanup objects during Dispose/finalization.
True if disposing and false if being finalized.
Returns the current number of channels in this audio stream.
Audio Volume Notification Data
Audio Volume Notification Data
Event Context
Muted
Master Volume
Channels
Channel Volume
AUDCLNT_E_NOT_INITIALIZED
AUDCLNT_E_UNSUPPORTED_FORMAT
AUDCLNT_E_DEVICE_IN_USE
Defined in AudioClient.h
Defined in AudioClient.h
Windows CoreAudio IAudioSessionControl interface
Defined in AudioPolicy.h
Retrieves the current state of the audio session.
Receives the current session state.
An HRESULT code indicating whether the operation succeeded of failed.
Retrieves the display name for the audio session.
Receives a string that contains the display name.
An HRESULT code indicating whether the operation succeeded of failed.
Assigns a display name to the current audio session.
A string that contains the new display name for the session.
A user context value that is passed to the notification callback.
An HRESULT code indicating whether the operation succeeded of failed.
Retrieves the path for the display icon for the audio session.
Receives a string that specifies the fully qualified path of the file that contains the icon.
An HRESULT code indicating whether the operation succeeded of failed.
Assigns a display icon to the current session.
A string that specifies the fully qualified path of the file that contains the new icon.
A user context value that is passed to the notification callback.
An HRESULT code indicating whether the operation succeeded of failed.
Retrieves the grouping parameter of the audio session.
Receives the grouping parameter ID.
An HRESULT code indicating whether the operation succeeded of failed.
Assigns a session to a grouping of sessions.
The new grouping parameter ID.
A user context value that is passed to the notification callback.
An HRESULT code indicating whether the operation succeeded of failed.
Registers the client to receive notifications of session events, including changes in the session state.
A client-implemented interface.
An HRESULT code indicating whether the operation succeeded of failed.
Deletes a previous registration by the client to receive notifications.
A client-implemented interface.
An HRESULT code indicating whether the operation succeeded of failed.
Windows CoreAudio IAudioSessionControl interface
Defined in AudioPolicy.h
Retrieves the current state of the audio session.
Receives the current session state.
An HRESULT code indicating whether the operation succeeded of failed.
Retrieves the display name for the audio session.
Receives a string that contains the display name.
An HRESULT code indicating whether the operation succeeded of failed.
Assigns a display name to the current audio session.
A string that contains the new display name for the session.
A user context value that is passed to the notification callback.
An HRESULT code indicating whether the operation succeeded of failed.
Retrieves the path for the display icon for the audio session.
Receives a string that specifies the fully qualified path of the file that contains the icon.
An HRESULT code indicating whether the operation succeeded of failed.
Assigns a display icon to the current session.
A string that specifies the fully qualified path of the file that contains the new icon.
A user context value that is passed to the notification callback.
An HRESULT code indicating whether the operation succeeded of failed.
Retrieves the grouping parameter of the audio session.
Receives the grouping parameter ID.
An HRESULT code indicating whether the operation succeeded of failed.
Assigns a session to a grouping of sessions.
The new grouping parameter ID.
A user context value that is passed to the notification callback.
An HRESULT code indicating whether the operation succeeded of failed.
Registers the client to receive notifications of session events, including changes in the session state.
A client-implemented interface.
An HRESULT code indicating whether the operation succeeded of failed.
Deletes a previous registration by the client to receive notifications.
A client-implemented interface.
An HRESULT code indicating whether the operation succeeded of failed.
Retrieves the identifier for the audio session.
Receives the session identifier.
An HRESULT code indicating whether the operation succeeded of failed.
Retrieves the identifier of the audio session instance.
Receives the identifier of a particular instance.
An HRESULT code indicating whether the operation succeeded of failed.
Retrieves the process identifier of the audio session.
Receives the process identifier of the audio session.
An HRESULT code indicating whether the operation succeeded of failed.
Indicates whether the session is a system sounds session.
An HRESULT code indicating whether the operation succeeded of failed.
Enables or disables the default stream attenuation experience (auto-ducking) provided by the system.
A variable that enables or disables system auto-ducking.
An HRESULT code indicating whether the operation succeeded of failed.
Defines constants that indicate the current state of an audio session.
MSDN Reference: http://msdn.microsoft.com/en-us/library/dd370792.aspx
The audio session is inactive.
The audio session is active.
The audio session has expired.
Defines constants that indicate a reason for an audio session being disconnected.
MSDN Reference: Unknown
The user removed the audio endpoint device.
The Windows audio service has stopped.
The stream format changed for the device that the audio session is connected to.
The user logged off the WTS session that the audio session was running in.
The WTS session that the audio session was running in was disconnected.
The (shared-mode) audio session was disconnected to make the audio endpoint device available for an exclusive-mode connection.
interface to receive session related events
notification of volume changes including muting of audio session
the current volume
the current mute state, true muted, false otherwise
notification of display name changed
the current display name
notification of icon path changed
the current icon path
notification of the client that the volume level of an audio channel in the session submix has changed
The channel count.
An array of volumnes cooresponding with each channel index.
The number of the channel whose volume level changed.
notification of the client that the grouping parameter for the session has changed
>The new grouping parameter for the session.
notification of the client that the stream-activity state of the session has changed
The new session state.
notification of the client that the session has been disconnected
The reason that the audio session was disconnected.
Windows CoreAudio IAudioSessionManager interface
Defined in AudioPolicy.h
Retrieves an audio session control.
A new or existing session ID.
Audio session flags.
Receives an interface for the audio session.
An HRESULT code indicating whether the operation succeeded of failed.
Retrieves a simple audio volume control.
A new or existing session ID.
Audio session flags.
Receives an interface for the audio session.
An HRESULT code indicating whether the operation succeeded of failed.
Retrieves an audio session control.
A new or existing session ID.
Audio session flags.
Receives an interface for the audio session.
An HRESULT code indicating whether the operation succeeded of failed.
Retrieves a simple audio volume control.
A new or existing session ID.
Audio session flags.
Receives an interface for the audio session.
An HRESULT code indicating whether the operation succeeded of failed.
Windows CoreAudio ISimpleAudioVolume interface
Defined in AudioClient.h
Sets the master volume level for the audio session.
The new volume level expressed as a normalized value between 0.0 and 1.0.
A user context value that is passed to the notification callback.
An HRESULT code indicating whether the operation succeeded of failed.
Retrieves the client volume level for the audio session.
Receives the volume level expressed as a normalized value between 0.0 and 1.0.
An HRESULT code indicating whether the operation succeeded of failed.
Sets the muting state for the audio session.
The new muting state.
A user context value that is passed to the notification callback.
An HRESULT code indicating whether the operation succeeded of failed.
Retrieves the current muting state for the audio session.
Receives the muting state.
An HRESULT code indicating whether the operation succeeded of failed.
Multimedia Device Collection
Get Enumerator
Device enumerator
Device count
Get device by index
Device index
Device at the specified index
Property Keys
PKEY_DeviceInterface_FriendlyName
PKEY_AudioEndpoint_FormFactor
PKEY_AudioEndpoint_ControlPanelPageProvider
PKEY_AudioEndpoint_Association
PKEY_AudioEndpoint_PhysicalSpeakers
PKEY_AudioEndpoint_GUID
PKEY_AudioEndpoint_Disable_SysFx
PKEY_AudioEndpoint_FullRangeSpeakers
PKEY_AudioEndpoint_Supports_EventDriven_Mode
PKEY_AudioEndpoint_JackSubType
PKEY_AudioEngine_DeviceFormat
PKEY_AudioEngine_OEMFormat
PKEY _Devie_FriendlyName
PKEY _Device_IconPath
Collection of sessions.
Returns session at index.
Number of current sessions.
Windows CoreAudio SimpleAudioVolume
Creates a new Audio endpoint volume
ISimpleAudioVolume COM interface
Dispose
Finalizer
Allows the user to adjust the volume from
0.0 to 1.0
Mute
Envelope generator (ADSR)
Creates and Initializes an Envelope Generator
Sets the attack curve
Sets the decay release curve
Read the next volume multiplier from the envelope generator
A volume multiplier
Trigger the gate
If true, enter attack phase, if false enter release phase (unless already idle)
Reset to idle state
Get the current output level
Attack Rate (seconds * SamplesPerSecond)
Decay Rate (seconds * SamplesPerSecond)
Release Rate (seconds * SamplesPerSecond)
Sustain Level (1 = 100%)
Current envelope state
Envelope State
Idle
Attack
Decay
Sustain
Release
Fully managed resampler, based on Cockos WDL Resampler
Creates a new Resampler
sets the mode
if sinc set, it overrides interp or filtercnt
Sets the filter parameters
used for filtercnt>0 but not sinc
Set feed mode
if true, that means the first parameter to ResamplePrepare will specify however much input you have, not how much you want
Reset
Prepare
note that it is safe to call ResamplePrepare without calling ResampleOut (the next call of ResamplePrepare will function as normal)
nb inbuffer was WDL_ResampleSample **, returning a place to put the in buffer, so we return a buffer and offset
req_samples is output samples desired if !wantInputDriven, or if wantInputDriven is input samples that we have
returns number of samples desired (put these into *inbuffer)
http://tech.ebu.ch/docs/tech/tech3306-2009.pdf
WaveFormat
Data Chunk Position
Data Chunk Length
Riff Chunks
Audio Subtype GUIDs
http://msdn.microsoft.com/en-us/library/windows/desktop/aa372553%28v=vs.85%29.aspx
Advanced Audio Coding (AAC).
Not used
Dolby AC-3 audio over Sony/Philips Digital Interface (S/PDIF).
Encrypted audio data used with secure audio path.
Digital Theater Systems (DTS) audio.
Uncompressed IEEE floating-point audio.
MPEG Audio Layer-3 (MP3).
MPEG-1 audio payload.
Windows Media Audio 9 Voice codec.
Uncompressed PCM audio.
Windows Media Audio 9 Professional codec over S/PDIF.
Windows Media Audio 9 Lossless codec or Windows Media Audio 9.1 codec.
Windows Media Audio 8 codec, Windows Media Audio 9 codec, or Windows Media Audio 9.1 codec.
Windows Media Audio 9 Professional codec or Windows Media Audio 9.1 Professional codec.
Dolby Digital (AC-3).
MPEG-4 and AAC Audio Types
http://msdn.microsoft.com/en-us/library/windows/desktop/dd317599(v=vs.85).aspx
Reference : wmcodecdsp.h
Dolby Audio Types
http://msdn.microsoft.com/en-us/library/windows/desktop/dd317599(v=vs.85).aspx
Reference : wmcodecdsp.h
Dolby Audio Types
http://msdn.microsoft.com/en-us/library/windows/desktop/dd317599(v=vs.85).aspx
Reference : wmcodecdsp.h
μ-law coding
http://msdn.microsoft.com/en-us/library/windows/desktop/dd390971(v=vs.85).aspx
Reference : Ksmedia.h
Adaptive delta pulse code modulation (ADPCM)
http://msdn.microsoft.com/en-us/library/windows/desktop/dd390971(v=vs.85).aspx
Reference : Ksmedia.h
Dolby Digital Plus formatted for HDMI output.
http://msdn.microsoft.com/en-us/library/windows/hardware/ff538392(v=vs.85).aspx
Reference : internet
MSAudio1 - unknown meaning
Reference : wmcodecdsp.h
IMA ADPCM ACM Wrapper
WMSP2 - unknown meaning
Reference: wmsdkidl.h
Creates an instance of either the sink writer or the source reader.
Creates an instance of the sink writer or source reader, given a URL.
Creates an instance of the sink writer or source reader, given an IUnknown pointer.
CLSID_MFReadWriteClassFactory
Media Foundation Errors
RANGES
14000 - 14999 = General Media Foundation errors
15000 - 15999 = ASF parsing errors
16000 - 16999 = Media Source errors
17000 - 17999 = MEDIAFOUNDATION Network Error Events
18000 - 18999 = MEDIAFOUNDATION WMContainer Error Events
19000 - 19999 = MEDIAFOUNDATION Media Sink Error Events
20000 - 20999 = Renderer errors
21000 - 21999 = Topology Errors
25000 - 25999 = Timeline Errors
26000 - 26999 = Unused
28000 - 28999 = Transform errors
29000 - 29999 = Content Protection errors
40000 - 40999 = Clock errors
41000 - 41999 = MF Quality Management Errors
42000 - 42999 = MF Transcode API Errors
MessageId: MF_E_PLATFORM_NOT_INITIALIZED
MessageText:
Platform not initialized. Please call MFStartup().%0
MessageId: MF_E_BUFFERTOOSMALL
MessageText:
The buffer was too small to carry out the requested action.%0
MessageId: MF_E_INVALIDREQUEST
MessageText:
The request is invalid in the current state.%0
MessageId: MF_E_INVALIDSTREAMNUMBER
MessageText:
The stream number provided was invalid.%0
MessageId: MF_E_INVALIDMEDIATYPE
MessageText:
The data specified for the media type is invalid, inconsistent, or not supported by this object.%0
MessageId: MF_E_NOTACCEPTING
MessageText:
The callee is currently not accepting further input.%0
MessageId: MF_E_NOT_INITIALIZED
MessageText:
This object needs to be initialized before the requested operation can be carried out.%0
MessageId: MF_E_UNSUPPORTED_REPRESENTATION
MessageText:
The requested representation is not supported by this object.%0
MessageId: MF_E_NO_MORE_TYPES
MessageText:
An object ran out of media types to suggest therefore the requested chain of streaming objects cannot be completed.%0
MessageId: MF_E_UNSUPPORTED_SERVICE
MessageText:
The object does not support the specified service.%0
MessageId: MF_E_UNEXPECTED
MessageText:
An unexpected error has occurred in the operation requested.%0
MessageId: MF_E_INVALIDNAME
MessageText:
Invalid name.%0
MessageId: MF_E_INVALIDTYPE
MessageText:
Invalid type.%0
MessageId: MF_E_INVALID_FILE_FORMAT
MessageText:
The file does not conform to the relevant file format specification.
MessageId: MF_E_INVALIDINDEX
MessageText:
Invalid index.%0
MessageId: MF_E_INVALID_TIMESTAMP
MessageText:
An invalid timestamp was given.%0
MessageId: MF_E_UNSUPPORTED_SCHEME
MessageText:
The scheme of the given URL is unsupported.%0
MessageId: MF_E_UNSUPPORTED_BYTESTREAM_TYPE
MessageText:
The byte stream type of the given URL is unsupported.%0
MessageId: MF_E_UNSUPPORTED_TIME_FORMAT
MessageText:
The given time format is unsupported.%0
MessageId: MF_E_NO_SAMPLE_TIMESTAMP
MessageText:
The Media Sample does not have a timestamp.%0
MessageId: MF_E_NO_SAMPLE_DURATION
MessageText:
The Media Sample does not have a duration.%0
MessageId: MF_E_INVALID_STREAM_DATA
MessageText:
The request failed because the data in the stream is corrupt.%0\n.
MessageId: MF_E_RT_UNAVAILABLE
MessageText:
Real time services are not available.%0
MessageId: MF_E_UNSUPPORTED_RATE
MessageText:
The specified rate is not supported.%0
MessageId: MF_E_THINNING_UNSUPPORTED
MessageText:
This component does not support stream-thinning.%0
MessageId: MF_E_REVERSE_UNSUPPORTED
MessageText:
The call failed because no reverse playback rates are available.%0
MessageId: MF_E_UNSUPPORTED_RATE_TRANSITION
MessageText:
The requested rate transition cannot occur in the current state.%0
MessageId: MF_E_RATE_CHANGE_PREEMPTED
MessageText:
The requested rate change has been pre-empted and will not occur.%0
MessageId: MF_E_NOT_FOUND
MessageText:
The specified object or value does not exist.%0
MessageId: MF_E_NOT_AVAILABLE
MessageText:
The requested value is not available.%0
MessageId: MF_E_NO_CLOCK
MessageText:
The specified operation requires a clock and no clock is available.%0
MessageId: MF_S_MULTIPLE_BEGIN
MessageText:
This callback and state had already been passed in to this event generator earlier.%0
MessageId: MF_E_MULTIPLE_BEGIN
MessageText:
This callback has already been passed in to this event generator.%0
MessageId: MF_E_MULTIPLE_SUBSCRIBERS
MessageText:
Some component is already listening to events on this event generator.%0
MessageId: MF_E_TIMER_ORPHANED
MessageText:
This timer was orphaned before its callback time arrived.%0
MessageId: MF_E_STATE_TRANSITION_PENDING
MessageText:
A state transition is already pending.%0
MessageId: MF_E_UNSUPPORTED_STATE_TRANSITION
MessageText:
The requested state transition is unsupported.%0
MessageId: MF_E_UNRECOVERABLE_ERROR_OCCURRED
MessageText:
An unrecoverable error has occurred.%0
MessageId: MF_E_SAMPLE_HAS_TOO_MANY_BUFFERS
MessageText:
The provided sample has too many buffers.%0
MessageId: MF_E_SAMPLE_NOT_WRITABLE
MessageText:
The provided sample is not writable.%0
MessageId: MF_E_INVALID_KEY
MessageText:
The specified key is not valid.
MessageId: MF_E_BAD_STARTUP_VERSION
MessageText:
You are calling MFStartup with the wrong MF_VERSION. Mismatched bits?
MessageId: MF_E_UNSUPPORTED_CAPTION
MessageText:
The caption of the given URL is unsupported.%0
MessageId: MF_E_INVALID_POSITION
MessageText:
The operation on the current offset is not permitted.%0
MessageId: MF_E_ATTRIBUTENOTFOUND
MessageText:
The requested attribute was not found.%0
MessageId: MF_E_PROPERTY_TYPE_NOT_ALLOWED
MessageText:
The specified property type is not allowed in this context.%0
MessageId: MF_E_PROPERTY_TYPE_NOT_SUPPORTED
MessageText:
The specified property type is not supported.%0
MessageId: MF_E_PROPERTY_EMPTY
MessageText:
The specified property is empty.%0
MessageId: MF_E_PROPERTY_NOT_EMPTY
MessageText:
The specified property is not empty.%0
MessageId: MF_E_PROPERTY_VECTOR_NOT_ALLOWED
MessageText:
The vector property specified is not allowed in this context.%0
MessageId: MF_E_PROPERTY_VECTOR_REQUIRED
MessageText:
A vector property is required in this context.%0
MessageId: MF_E_OPERATION_CANCELLED
MessageText:
The operation is cancelled.%0
MessageId: MF_E_BYTESTREAM_NOT_SEEKABLE
MessageText:
The provided bytestream was expected to be seekable and it is not.%0
MessageId: MF_E_DISABLED_IN_SAFEMODE
MessageText:
The Media Foundation platform is disabled when the system is running in Safe Mode.%0
MessageId: MF_E_CANNOT_PARSE_BYTESTREAM
MessageText:
The Media Source could not parse the byte stream.%0
MessageId: MF_E_SOURCERESOLVER_MUTUALLY_EXCLUSIVE_FLAGS
MessageText:
Mutually exclusive flags have been specified to source resolver. This flag combination is invalid.%0
MessageId: MF_E_MEDIAPROC_WRONGSTATE
MessageText:
MediaProc is in the wrong state%0
MessageId: MF_E_RT_THROUGHPUT_NOT_AVAILABLE
MessageText:
Real time I/O service can not provide requested throughput.%0
MessageId: MF_E_RT_TOO_MANY_CLASSES
MessageText:
The workqueue cannot be registered with more classes.%0
MessageId: MF_E_RT_WOULDBLOCK
MessageText:
This operation cannot succeed because another thread owns this object.%0
MessageId: MF_E_NO_BITPUMP
MessageText:
Internal. Bitpump not found.%0
MessageId: MF_E_RT_OUTOFMEMORY
MessageText:
No more RT memory available.%0
MessageId: MF_E_RT_WORKQUEUE_CLASS_NOT_SPECIFIED
MessageText:
An MMCSS class has not been set for this work queue.%0
MessageId: MF_E_INSUFFICIENT_BUFFER
MessageText:
Insufficient memory for response.%0
MessageId: MF_E_CANNOT_CREATE_SINK
MessageText:
Activate failed to create mediasink. Call OutputNode::GetUINT32(MF_TOPONODE_MAJORTYPE) for more information. %0
MessageId: MF_E_BYTESTREAM_UNKNOWN_LENGTH
MessageText:
The length of the provided bytestream is unknown.%0
MessageId: MF_E_SESSION_PAUSEWHILESTOPPED
MessageText:
The media session cannot pause from a stopped state.%0
MessageId: MF_S_ACTIVATE_REPLACED
MessageText:
The activate could not be created in the remote process for some reason it was replaced with empty one.%0
MessageId: MF_E_FORMAT_CHANGE_NOT_SUPPORTED
MessageText:
The data specified for the media type is supported, but would require a format change, which is not supported by this object.%0
MessageId: MF_E_INVALID_WORKQUEUE
MessageText:
The operation failed because an invalid combination of workqueue ID and flags was specified.%0
MessageId: MF_E_DRM_UNSUPPORTED
MessageText:
No DRM support is available.%0
MessageId: MF_E_UNAUTHORIZED
MessageText:
This operation is not authorized.%0
MessageId: MF_E_OUT_OF_RANGE
MessageText:
The value is not in the specified or valid range.%0
MessageId: MF_E_INVALID_CODEC_MERIT
MessageText:
The registered codec merit is not valid.%0
MessageId: MF_E_HW_MFT_FAILED_START_STREAMING
MessageText:
Hardware MFT failed to start streaming due to lack of hardware resources.%0
MessageId: MF_S_ASF_PARSEINPROGRESS
MessageText:
Parsing is still in progress and is not yet complete.%0
MessageId: MF_E_ASF_PARSINGINCOMPLETE
MessageText:
Not enough data have been parsed to carry out the requested action.%0
MessageId: MF_E_ASF_MISSINGDATA
MessageText:
There is a gap in the ASF data provided.%0
MessageId: MF_E_ASF_INVALIDDATA
MessageText:
The data provided are not valid ASF.%0
MessageId: MF_E_ASF_OPAQUEPACKET
MessageText:
The packet is opaque, so the requested information cannot be returned.%0
MessageId: MF_E_ASF_NOINDEX
MessageText:
The requested operation failed since there is no appropriate ASF index.%0
MessageId: MF_E_ASF_OUTOFRANGE
MessageText:
The value supplied is out of range for this operation.%0
MessageId: MF_E_ASF_INDEXNOTLOADED
MessageText:
The index entry requested needs to be loaded before it can be available.%0
MessageId: MF_E_ASF_TOO_MANY_PAYLOADS
MessageText:
The packet has reached the maximum number of payloads.%0
MessageId: MF_E_ASF_UNSUPPORTED_STREAM_TYPE
MessageText:
Stream type is not supported.%0
MessageId: MF_E_ASF_DROPPED_PACKET
MessageText:
One or more ASF packets were dropped.%0
MessageId: MF_E_NO_EVENTS_AVAILABLE
MessageText:
There are no events available in the queue.%0
MessageId: MF_E_INVALID_STATE_TRANSITION
MessageText:
A media source cannot go from the stopped state to the paused state.%0
MessageId: MF_E_END_OF_STREAM
MessageText:
The media stream cannot process any more samples because there are no more samples in the stream.%0
MessageId: MF_E_SHUTDOWN
MessageText:
The request is invalid because Shutdown() has been called.%0
MessageId: MF_E_MP3_NOTFOUND
MessageText:
The MP3 object was not found.%0
MessageId: MF_E_MP3_OUTOFDATA
MessageText:
The MP3 parser ran out of data before finding the MP3 object.%0
MessageId: MF_E_MP3_NOTMP3
MessageText:
The file is not really a MP3 file.%0
MessageId: MF_E_MP3_NOTSUPPORTED
MessageText:
The MP3 file is not supported.%0
MessageId: MF_E_NO_DURATION
MessageText:
The Media stream has no duration.%0
MessageId: MF_E_INVALID_FORMAT
MessageText:
The Media format is recognized but is invalid.%0
MessageId: MF_E_PROPERTY_NOT_FOUND
MessageText:
The property requested was not found.%0
MessageId: MF_E_PROPERTY_READ_ONLY
MessageText:
The property is read only.%0
MessageId: MF_E_PROPERTY_NOT_ALLOWED
MessageText:
The specified property is not allowed in this context.%0
MessageId: MF_E_MEDIA_SOURCE_NOT_STARTED
MessageText:
The media source is not started.%0
MessageId: MF_E_UNSUPPORTED_FORMAT
MessageText:
The Media format is recognized but not supported.%0
MessageId: MF_E_MP3_BAD_CRC
MessageText:
The MPEG frame has bad CRC.%0
MessageId: MF_E_NOT_PROTECTED
MessageText:
The file is not protected.%0
MessageId: MF_E_MEDIA_SOURCE_WRONGSTATE
MessageText:
The media source is in the wrong state%0
MessageId: MF_E_MEDIA_SOURCE_NO_STREAMS_SELECTED
MessageText:
No streams are selected in source presentation descriptor.%0
MessageId: MF_E_CANNOT_FIND_KEYFRAME_SAMPLE
MessageText:
No key frame sample was found.%0
MessageId: MF_E_NETWORK_RESOURCE_FAILURE
MessageText:
An attempt to acquire a network resource failed.%0
MessageId: MF_E_NET_WRITE
MessageText:
Error writing to the network.%0
MessageId: MF_E_NET_READ
MessageText:
Error reading from the network.%0
MessageId: MF_E_NET_REQUIRE_NETWORK
MessageText:
Internal. Entry cannot complete operation without network.%0
MessageId: MF_E_NET_REQUIRE_ASYNC
MessageText:
Internal. Async op is required.%0
MessageId: MF_E_NET_BWLEVEL_NOT_SUPPORTED
MessageText:
Internal. Bandwidth levels are not supported.%0
MessageId: MF_E_NET_STREAMGROUPS_NOT_SUPPORTED
MessageText:
Internal. Stream groups are not supported.%0
MessageId: MF_E_NET_MANUALSS_NOT_SUPPORTED
MessageText:
Manual stream selection is not supported.%0
MessageId: MF_E_NET_INVALID_PRESENTATION_DESCRIPTOR
MessageText:
Invalid presentation descriptor.%0
MessageId: MF_E_NET_CACHESTREAM_NOT_FOUND
MessageText:
Cannot find cache stream.%0
MessageId: MF_I_MANUAL_PROXY
MessageText:
The proxy setting is manual.%0
duplicate removed
MessageId=17011 Severity=Informational Facility=MEDIAFOUNDATION SymbolicName=MF_E_INVALID_REQUEST
Language=English
The request is invalid in the current state.%0
.
MessageId: MF_E_NET_REQUIRE_INPUT
MessageText:
Internal. Entry cannot complete operation without input.%0
MessageId: MF_E_NET_REDIRECT
MessageText:
The client redirected to another server.%0
MessageId: MF_E_NET_REDIRECT_TO_PROXY
MessageText:
The client is redirected to a proxy server.%0
MessageId: MF_E_NET_TOO_MANY_REDIRECTS
MessageText:
The client reached maximum redirection limit.%0
MessageId: MF_E_NET_TIMEOUT
MessageText:
The server, a computer set up to offer multimedia content to other computers, could not handle your request for multimedia content in a timely manner. Please try again later.%0
MessageId: MF_E_NET_CLIENT_CLOSE
MessageText:
The control socket is closed by the client.%0
MessageId: MF_E_NET_BAD_CONTROL_DATA
MessageText:
The server received invalid data from the client on the control connection.%0
MessageId: MF_E_NET_INCOMPATIBLE_SERVER
MessageText:
The server is not a compatible streaming media server.%0
MessageId: MF_E_NET_UNSAFE_URL
MessageText:
Url.%0
MessageId: MF_E_NET_CACHE_NO_DATA
MessageText:
Data is not available.%0
MessageId: MF_E_NET_EOL
MessageText:
End of line.%0
MessageId: MF_E_NET_BAD_REQUEST
MessageText:
The request could not be understood by the server.%0
MessageId: MF_E_NET_INTERNAL_SERVER_ERROR
MessageText:
The server encountered an unexpected condition which prevented it from fulfilling the request.%0
MessageId: MF_E_NET_SESSION_NOT_FOUND
MessageText:
Session not found.%0
MessageId: MF_E_NET_NOCONNECTION
MessageText:
There is no connection established with the Windows Media server. The operation failed.%0
MessageId: MF_E_NET_CONNECTION_FAILURE
MessageText:
The network connection has failed.%0
MessageId: MF_E_NET_INCOMPATIBLE_PUSHSERVER
MessageText:
The Server service that received the HTTP push request is not a compatible version of Windows Media Services (WMS). This error may indicate the push request was received by IIS instead of WMS. Ensure WMS is started and has the HTTP Server control protocol properly enabled and try again.%0
MessageId: MF_E_NET_SERVER_ACCESSDENIED
MessageText:
The Windows Media server is denying access. The username and/or password might be incorrect.%0
MessageId: MF_E_NET_PROXY_ACCESSDENIED
MessageText:
The proxy server is denying access. The username and/or password might be incorrect.%0
MessageId: MF_E_NET_CANNOTCONNECT
MessageText:
Unable to establish a connection to the server.%0
MessageId: MF_E_NET_INVALID_PUSH_TEMPLATE
MessageText:
The specified push template is invalid.%0
MessageId: MF_E_NET_INVALID_PUSH_PUBLISHING_POINT
MessageText:
The specified push publishing point is invalid.%0
MessageId: MF_E_NET_BUSY
MessageText:
The requested resource is in use.%0
MessageId: MF_E_NET_RESOURCE_GONE
MessageText:
The Publishing Point or file on the Windows Media Server is no longer available.%0
MessageId: MF_E_NET_ERROR_FROM_PROXY
MessageText:
The proxy experienced an error while attempting to contact the media server.%0
MessageId: MF_E_NET_PROXY_TIMEOUT
MessageText:
The proxy did not receive a timely response while attempting to contact the media server.%0
MessageId: MF_E_NET_SERVER_UNAVAILABLE
MessageText:
The server is currently unable to handle the request due to a temporary overloading or maintenance of the server.%0
MessageId: MF_E_NET_TOO_MUCH_DATA
MessageText:
The encoding process was unable to keep up with the amount of supplied data.%0
MessageId: MF_E_NET_SESSION_INVALID
MessageText:
Session not found.%0
MessageId: MF_E_OFFLINE_MODE
MessageText:
The requested URL is not available in offline mode.%0
MessageId: MF_E_NET_UDP_BLOCKED
MessageText:
A device in the network is blocking UDP traffic.%0
MessageId: MF_E_NET_UNSUPPORTED_CONFIGURATION
MessageText:
The specified configuration value is not supported.%0
MessageId: MF_E_NET_PROTOCOL_DISABLED
MessageText:
The networking protocol is disabled.%0
MessageId: MF_E_ALREADY_INITIALIZED
MessageText:
This object has already been initialized and cannot be re-initialized at this time.%0
MessageId: MF_E_BANDWIDTH_OVERRUN
MessageText:
The amount of data passed in exceeds the given bitrate and buffer window.%0
MessageId: MF_E_LATE_SAMPLE
MessageText:
The sample was passed in too late to be correctly processed.%0
MessageId: MF_E_FLUSH_NEEDED
MessageText:
The requested action cannot be carried out until the object is flushed and the queue is emptied.%0
MessageId: MF_E_INVALID_PROFILE
MessageText:
The profile is invalid.%0
MessageId: MF_E_INDEX_NOT_COMMITTED
MessageText:
The index that is being generated needs to be committed before the requested action can be carried out.%0
MessageId: MF_E_NO_INDEX
MessageText:
The index that is necessary for the requested action is not found.%0
MessageId: MF_E_CANNOT_INDEX_IN_PLACE
MessageText:
The requested index cannot be added in-place to the specified ASF content.%0
MessageId: MF_E_MISSING_ASF_LEAKYBUCKET
MessageText:
The ASF leaky bucket parameters must be specified in order to carry out this request.%0
MessageId: MF_E_INVALID_ASF_STREAMID
MessageText:
The stream id is invalid. The valid range for ASF stream id is from 1 to 127.%0
MessageId: MF_E_STREAMSINK_REMOVED
MessageText:
The requested Stream Sink has been removed and cannot be used.%0
MessageId: MF_E_STREAMSINKS_OUT_OF_SYNC
MessageText:
The various Stream Sinks in this Media Sink are too far out of sync for the requested action to take place.%0
MessageId: MF_E_STREAMSINKS_FIXED
MessageText:
Stream Sinks cannot be added to or removed from this Media Sink because its set of streams is fixed.%0
MessageId: MF_E_STREAMSINK_EXISTS
MessageText:
The given Stream Sink already exists.%0
MessageId: MF_E_SAMPLEALLOCATOR_CANCELED
MessageText:
Sample allocations have been canceled.%0
MessageId: MF_E_SAMPLEALLOCATOR_EMPTY
MessageText:
The sample allocator is currently empty, due to outstanding requests.%0
MessageId: MF_E_SINK_ALREADYSTOPPED
MessageText:
When we try to sopt a stream sink, it is already stopped %0
MessageId: MF_E_ASF_FILESINK_BITRATE_UNKNOWN
MessageText:
The ASF file sink could not reserve AVIO because the bitrate is unknown.%0
MessageId: MF_E_SINK_NO_STREAMS
MessageText:
No streams are selected in sink presentation descriptor.%0
MessageId: MF_S_SINK_NOT_FINALIZED
MessageText:
The sink has not been finalized before shut down. This may cause sink generate a corrupted content.%0
MessageId: MF_E_METADATA_TOO_LONG
MessageText:
A metadata item was too long to write to the output container.%0
MessageId: MF_E_SINK_NO_SAMPLES_PROCESSED
MessageText:
The operation failed because no samples were processed by the sink.%0
MessageId: MF_E_VIDEO_REN_NO_PROCAMP_HW
MessageText:
There is no available procamp hardware with which to perform color correction.%0
MessageId: MF_E_VIDEO_REN_NO_DEINTERLACE_HW
MessageText:
There is no available deinterlacing hardware with which to deinterlace the video stream.%0
MessageId: MF_E_VIDEO_REN_COPYPROT_FAILED
MessageText:
A video stream requires copy protection to be enabled, but there was a failure in attempting to enable copy protection.%0
MessageId: MF_E_VIDEO_REN_SURFACE_NOT_SHARED
MessageText:
A component is attempting to access a surface for sharing that is not shared.%0
MessageId: MF_E_VIDEO_DEVICE_LOCKED
MessageText:
A component is attempting to access a shared device that is already locked by another component.%0
MessageId: MF_E_NEW_VIDEO_DEVICE
MessageText:
The device is no longer available. The handle should be closed and a new one opened.%0
MessageId: MF_E_NO_VIDEO_SAMPLE_AVAILABLE
MessageText:
A video sample is not currently queued on a stream that is required for mixing.%0
MessageId: MF_E_NO_AUDIO_PLAYBACK_DEVICE
MessageText:
No audio playback device was found.%0
MessageId: MF_E_AUDIO_PLAYBACK_DEVICE_IN_USE
MessageText:
The requested audio playback device is currently in use.%0
MessageId: MF_E_AUDIO_PLAYBACK_DEVICE_INVALIDATED
MessageText:
The audio playback device is no longer present.%0
MessageId: MF_E_AUDIO_SERVICE_NOT_RUNNING
MessageText:
The audio service is not running.%0
MessageId: MF_E_TOPO_INVALID_OPTIONAL_NODE
MessageText:
The topology contains an invalid optional node. Possible reasons are incorrect number of outputs and inputs or optional node is at the beginning or end of a segment. %0
MessageId: MF_E_TOPO_CANNOT_FIND_DECRYPTOR
MessageText:
No suitable transform was found to decrypt the content. %0
MessageId: MF_E_TOPO_CODEC_NOT_FOUND
MessageText:
No suitable transform was found to encode or decode the content. %0
MessageId: MF_E_TOPO_CANNOT_CONNECT
MessageText:
Unable to find a way to connect nodes%0
MessageId: MF_E_TOPO_UNSUPPORTED
MessageText:
Unsupported operations in topoloader%0
MessageId: MF_E_TOPO_INVALID_TIME_ATTRIBUTES
MessageText:
The topology or its nodes contain incorrectly set time attributes%0
MessageId: MF_E_TOPO_LOOPS_IN_TOPOLOGY
MessageText:
The topology contains loops, which are unsupported in media foundation topologies%0
MessageId: MF_E_TOPO_MISSING_PRESENTATION_DESCRIPTOR
MessageText:
A source stream node in the topology does not have a presentation descriptor%0
MessageId: MF_E_TOPO_MISSING_STREAM_DESCRIPTOR
MessageText:
A source stream node in the topology does not have a stream descriptor%0
MessageId: MF_E_TOPO_STREAM_DESCRIPTOR_NOT_SELECTED
MessageText:
A stream descriptor was set on a source stream node but it was not selected on the presentation descriptor%0
MessageId: MF_E_TOPO_MISSING_SOURCE
MessageText:
A source stream node in the topology does not have a source%0
MessageId: MF_E_TOPO_SINK_ACTIVATES_UNSUPPORTED
MessageText:
The topology loader does not support sink activates on output nodes.%0
MessageId: MF_E_SEQUENCER_UNKNOWN_SEGMENT_ID
MessageText:
The sequencer cannot find a segment with the given ID.%0\n.
MessageId: MF_S_SEQUENCER_CONTEXT_CANCELED
MessageText:
The context was canceled.%0\n.
MessageId: MF_E_NO_SOURCE_IN_CACHE
MessageText:
Cannot find source in source cache.%0\n.
MessageId: MF_S_SEQUENCER_SEGMENT_AT_END_OF_STREAM
MessageText:
Cannot update topology flags.%0\n.
MessageId: MF_E_TRANSFORM_TYPE_NOT_SET
MessageText:
A valid type has not been set for this stream or a stream that it depends on.%0
MessageId: MF_E_TRANSFORM_STREAM_CHANGE
MessageText:
A stream change has occurred. Output cannot be produced until the streams have been renegotiated.%0
MessageId: MF_E_TRANSFORM_INPUT_REMAINING
MessageText:
The transform cannot take the requested action until all of the input data it currently holds is processed or flushed.%0
MessageId: MF_E_TRANSFORM_PROFILE_MISSING
MessageText:
The transform requires a profile but no profile was supplied or found.%0
MessageId: MF_E_TRANSFORM_PROFILE_INVALID_OR_CORRUPT
MessageText:
The transform requires a profile but the supplied profile was invalid or corrupt.%0
MessageId: MF_E_TRANSFORM_PROFILE_TRUNCATED
MessageText:
The transform requires a profile but the supplied profile ended unexpectedly while parsing.%0
MessageId: MF_E_TRANSFORM_PROPERTY_PID_NOT_RECOGNIZED
MessageText:
The property ID does not match any property supported by the transform.%0
MessageId: MF_E_TRANSFORM_PROPERTY_VARIANT_TYPE_WRONG
MessageText:
The variant does not have the type expected for this property ID.%0
MessageId: MF_E_TRANSFORM_PROPERTY_NOT_WRITEABLE
MessageText:
An attempt was made to set the value on a read-only property.%0
MessageId: MF_E_TRANSFORM_PROPERTY_ARRAY_VALUE_WRONG_NUM_DIM
MessageText:
The array property value has an unexpected number of dimensions.%0
MessageId: MF_E_TRANSFORM_PROPERTY_VALUE_SIZE_WRONG
MessageText:
The array or blob property value has an unexpected size.%0
MessageId: MF_E_TRANSFORM_PROPERTY_VALUE_OUT_OF_RANGE
MessageText:
The property value is out of range for this transform.%0
MessageId: MF_E_TRANSFORM_PROPERTY_VALUE_INCOMPATIBLE
MessageText:
The property value is incompatible with some other property or mediatype set on the transform.%0
MessageId: MF_E_TRANSFORM_NOT_POSSIBLE_FOR_CURRENT_OUTPUT_MEDIATYPE
MessageText:
The requested operation is not supported for the currently set output mediatype.%0
MessageId: MF_E_TRANSFORM_NOT_POSSIBLE_FOR_CURRENT_INPUT_MEDIATYPE
MessageText:
The requested operation is not supported for the currently set input mediatype.%0
MessageId: MF_E_TRANSFORM_NOT_POSSIBLE_FOR_CURRENT_MEDIATYPE_COMBINATION
MessageText:
The requested operation is not supported for the currently set combination of mediatypes.%0
MessageId: MF_E_TRANSFORM_CONFLICTS_WITH_OTHER_CURRENTLY_ENABLED_FEATURES
MessageText:
The requested feature is not supported in combination with some other currently enabled feature.%0
MessageId: MF_E_TRANSFORM_NEED_MORE_INPUT
MessageText:
The transform cannot produce output until it gets more input samples.%0
MessageId: MF_E_TRANSFORM_NOT_POSSIBLE_FOR_CURRENT_SPKR_CONFIG
MessageText:
The requested operation is not supported for the current speaker configuration.%0
MessageId: MF_E_TRANSFORM_CANNOT_CHANGE_MEDIATYPE_WHILE_PROCESSING
MessageText:
The transform cannot accept mediatype changes in the middle of processing.%0
MessageId: MF_S_TRANSFORM_DO_NOT_PROPAGATE_EVENT
MessageText:
The caller should not propagate this event to downstream components.%0
MessageId: MF_E_UNSUPPORTED_D3D_TYPE
MessageText:
The input type is not supported for D3D device.%0
MessageId: MF_E_TRANSFORM_ASYNC_LOCKED
MessageText:
The caller does not appear to support this transform's asynchronous capabilities.%0
MessageId: MF_E_TRANSFORM_CANNOT_INITIALIZE_ACM_DRIVER
MessageText:
An audio compression manager driver could not be initialized by the transform.%0
MessageId: MF_E_LICENSE_INCORRECT_RIGHTS
MessageText:
You are not allowed to open this file. Contact the content provider for further assistance.%0
MessageId: MF_E_LICENSE_OUTOFDATE
MessageText:
The license for this media file has expired. Get a new license or contact the content provider for further assistance.%0
MessageId: MF_E_LICENSE_REQUIRED
MessageText:
You need a license to perform the requested operation on this media file.%0
MessageId: MF_E_DRM_HARDWARE_INCONSISTENT
MessageText:
The licenses for your media files are corrupted. Contact Microsoft product support.%0
MessageId: MF_E_NO_CONTENT_PROTECTION_MANAGER
MessageText:
The APP needs to provide IMFContentProtectionManager callback to access the protected media file.%0
MessageId: MF_E_LICENSE_RESTORE_NO_RIGHTS
MessageText:
Client does not have rights to restore licenses.%0
MessageId: MF_E_BACKUP_RESTRICTED_LICENSE
MessageText:
Licenses are restricted and hence can not be backed up.%0
MessageId: MF_E_LICENSE_RESTORE_NEEDS_INDIVIDUALIZATION
MessageText:
License restore requires machine to be individualized.%0
MessageId: MF_S_PROTECTION_NOT_REQUIRED
MessageText:
Protection for stream is not required.%0
MessageId: MF_E_COMPONENT_REVOKED
MessageText:
Component is revoked.%0
MessageId: MF_E_TRUST_DISABLED
MessageText:
Trusted functionality is currently disabled on this component.%0
MessageId: MF_E_WMDRMOTA_NO_ACTION
MessageText:
No Action is set on WMDRM Output Trust Authority.%0
MessageId: MF_E_WMDRMOTA_ACTION_ALREADY_SET
MessageText:
Action is already set on WMDRM Output Trust Authority.%0
MessageId: MF_E_WMDRMOTA_DRM_HEADER_NOT_AVAILABLE
MessageText:
DRM Heaader is not available.%0
MessageId: MF_E_WMDRMOTA_DRM_ENCRYPTION_SCHEME_NOT_SUPPORTED
MessageText:
Current encryption scheme is not supported.%0
MessageId: MF_E_WMDRMOTA_ACTION_MISMATCH
MessageText:
Action does not match with current configuration.%0
MessageId: MF_E_WMDRMOTA_INVALID_POLICY
MessageText:
Invalid policy for WMDRM Output Trust Authority.%0
MessageId: MF_E_POLICY_UNSUPPORTED
MessageText:
The policies that the Input Trust Authority requires to be enforced are unsupported by the outputs.%0
MessageId: MF_E_OPL_NOT_SUPPORTED
MessageText:
The OPL that the license requires to be enforced are not supported by the Input Trust Authority.%0
MessageId: MF_E_TOPOLOGY_VERIFICATION_FAILED
MessageText:
The topology could not be successfully verified.%0
MessageId: MF_E_SIGNATURE_VERIFICATION_FAILED
MessageText:
Signature verification could not be completed successfully for this component.%0
MessageId: MF_E_DEBUGGING_NOT_ALLOWED
MessageText:
Running this process under a debugger while using protected content is not allowed.%0
MessageId: MF_E_CODE_EXPIRED
MessageText:
MF component has expired.%0
MessageId: MF_E_GRL_VERSION_TOO_LOW
MessageText:
The current GRL on the machine does not meet the minimum version requirements.%0
MessageId: MF_E_GRL_RENEWAL_NOT_FOUND
MessageText:
The current GRL on the machine does not contain any renewal entries for the specified revocation.%0
MessageId: MF_E_GRL_EXTENSIBLE_ENTRY_NOT_FOUND
MessageText:
The current GRL on the machine does not contain any extensible entries for the specified extension GUID.%0
MessageId: MF_E_KERNEL_UNTRUSTED
MessageText:
The kernel isn't secure for high security level content.%0
MessageId: MF_E_PEAUTH_UNTRUSTED
MessageText:
The response from protected environment driver isn't valid.%0
MessageId: MF_E_NON_PE_PROCESS
MessageText:
A non-PE process tried to talk to PEAuth.%0
MessageId: MF_E_REBOOT_REQUIRED
MessageText:
We need to reboot the machine.%0
MessageId: MF_S_WAIT_FOR_POLICY_SET
MessageText:
Protection for this stream is not guaranteed to be enforced until the MEPolicySet event is fired.%0
MessageId: MF_S_VIDEO_DISABLED_WITH_UNKNOWN_SOFTWARE_OUTPUT
MessageText:
This video stream is disabled because it is being sent to an unknown software output.%0
MessageId: MF_E_GRL_INVALID_FORMAT
MessageText:
The GRL file is not correctly formed, it may have been corrupted or overwritten.%0
MessageId: MF_E_GRL_UNRECOGNIZED_FORMAT
MessageText:
The GRL file is in a format newer than those recognized by this GRL Reader.%0
MessageId: MF_E_ALL_PROCESS_RESTART_REQUIRED
MessageText:
The GRL was reloaded and required all processes that can run protected media to restart.%0
MessageId: MF_E_PROCESS_RESTART_REQUIRED
MessageText:
The GRL was reloaded and the current process needs to restart.%0
MessageId: MF_E_USERMODE_UNTRUSTED
MessageText:
The user space is untrusted for protected content play.%0
MessageId: MF_E_PEAUTH_SESSION_NOT_STARTED
MessageText:
PEAuth communication session hasn't been started.%0
MessageId: MF_E_PEAUTH_PUBLICKEY_REVOKED
MessageText:
PEAuth's public key is revoked.%0
MessageId: MF_E_GRL_ABSENT
MessageText:
The GRL is absent.%0
MessageId: MF_S_PE_TRUSTED
MessageText:
The Protected Environment is trusted.%0
MessageId: MF_E_PE_UNTRUSTED
MessageText:
The Protected Environment is untrusted.%0
MessageId: MF_E_PEAUTH_NOT_STARTED
MessageText:
The Protected Environment Authorization service (PEAUTH) has not been started.%0
MessageId: MF_E_INCOMPATIBLE_SAMPLE_PROTECTION
MessageText:
The sample protection algorithms supported by components are not compatible.%0
MessageId: MF_E_PE_SESSIONS_MAXED
MessageText:
No more protected environment sessions can be supported.%0
MessageId: MF_E_HIGH_SECURITY_LEVEL_CONTENT_NOT_ALLOWED
MessageText:
WMDRM ITA does not allow protected content with high security level for this release.%0
MessageId: MF_E_TEST_SIGNED_COMPONENTS_NOT_ALLOWED
MessageText:
WMDRM ITA cannot allow the requested action for the content as one or more components is not properly signed.%0
MessageId: MF_E_ITA_UNSUPPORTED_ACTION
MessageText:
WMDRM ITA does not support the requested action.%0
MessageId: MF_E_ITA_ERROR_PARSING_SAP_PARAMETERS
MessageText:
WMDRM ITA encountered an error in parsing the Secure Audio Path parameters.%0
MessageId: MF_E_POLICY_MGR_ACTION_OUTOFBOUNDS
MessageText:
The Policy Manager action passed in is invalid.%0
MessageId: MF_E_BAD_OPL_STRUCTURE_FORMAT
MessageText:
The structure specifying Output Protection Level is not the correct format.%0
MessageId: MF_E_ITA_UNRECOGNIZED_ANALOG_VIDEO_PROTECTION_GUID
MessageText:
WMDRM ITA does not recognize the Explicite Analog Video Output Protection guid specified in the license.%0
MessageId: MF_E_NO_PMP_HOST
MessageText:
IMFPMPHost object not available.%0
MessageId: MF_E_ITA_OPL_DATA_NOT_INITIALIZED
MessageText:
WMDRM ITA could not initialize the Output Protection Level data.%0
MessageId: MF_E_ITA_UNRECOGNIZED_ANALOG_VIDEO_OUTPUT
MessageText:
WMDRM ITA does not recognize the Analog Video Output specified by the OTA.%0
MessageId: MF_E_ITA_UNRECOGNIZED_DIGITAL_VIDEO_OUTPUT
MessageText:
WMDRM ITA does not recognize the Digital Video Output specified by the OTA.%0
MessageId: MF_E_CLOCK_INVALID_CONTINUITY_KEY
MessageText:
The continuity key supplied is not currently valid.%0
MessageId: MF_E_CLOCK_NO_TIME_SOURCE
MessageText:
No Presentation Time Source has been specified.%0
MessageId: MF_E_CLOCK_STATE_ALREADY_SET
MessageText:
The clock is already in the requested state.%0
MessageId: MF_E_CLOCK_NOT_SIMPLE
MessageText:
The clock has too many advanced features to carry out the request.%0
MessageId: MF_S_CLOCK_STOPPED
MessageText:
Timer::SetTimer returns this success code if called happened while timer is stopped. Timer is not going to be dispatched until clock is running%0
MessageId: MF_E_NO_MORE_DROP_MODES
MessageText:
The component does not support any more drop modes.%0
MessageId: MF_E_NO_MORE_QUALITY_LEVELS
MessageText:
The component does not support any more quality levels.%0
MessageId: MF_E_DROPTIME_NOT_SUPPORTED
MessageText:
The component does not support drop time functionality.%0
MessageId: MF_E_QUALITYKNOB_WAIT_LONGER
MessageText:
Quality Manager needs to wait longer before bumping the Quality Level up.%0
MessageId: MF_E_QM_INVALIDSTATE
MessageText:
Quality Manager is in an invalid state. Quality Management is off at this moment.%0
MessageId: MF_E_TRANSCODE_NO_CONTAINERTYPE
MessageText:
No transcode output container type is specified.%0
MessageId: MF_E_TRANSCODE_PROFILE_NO_MATCHING_STREAMS
MessageText:
The profile does not have a media type configuration for any selected source streams.%0
MessageId: MF_E_TRANSCODE_NO_MATCHING_ENCODER
MessageText:
Cannot find an encoder MFT that accepts the user preferred output type.%0
MessageId: MF_E_ALLOCATOR_NOT_INITIALIZED
MessageText:
Memory allocator is not initialized.%0
MessageId: MF_E_ALLOCATOR_NOT_COMMITED
MessageText:
Memory allocator is not committed yet.%0
MessageId: MF_E_ALLOCATOR_ALREADY_COMMITED
MessageText:
Memory allocator has already been committed.%0
MessageId: MF_E_STREAM_ERROR
MessageText:
An error occurred in media stream.%0
MessageId: MF_E_INVALID_STREAM_STATE
MessageText:
Stream is not in a state to handle the request.%0
MessageId: MF_E_HW_STREAM_NOT_CONNECTED
MessageText:
Hardware stream is not connected yet.%0
Major Media Types
http://msdn.microsoft.com/en-us/library/windows/desktop/aa367377%28v=vs.85%29.aspx
Default
Audio
Video
Protected Media
Synchronized Accessible Media Interchange (SAMI) captions.
Script stream
Still image stream.
HTML stream.
Binary stream.
A stream that contains data files.
Chunk Identifier helpers
Chunk identifier to Int32 (replaces mmioStringToFOURCC)
four character chunk identifier
Chunk identifier as int 32
Allows us to add descriptions to interop members
Field description
String representation
The description
IMFActivate, defined in mfobjects.h
Provides a generic way to store key/value pairs on an object.
http://msdn.microsoft.com/en-gb/library/windows/desktop/ms704598%28v=vs.85%29.aspx
Retrieves the value associated with a key.
Retrieves the data type of the value associated with a key.
Queries whether a stored attribute value equals a specified PROPVARIANT.
Compares the attributes on this object with the attributes on another object.
Retrieves a UINT32 value associated with a key.
Retrieves a UINT64 value associated with a key.
Retrieves a double value associated with a key.
Retrieves a GUID value associated with a key.
Retrieves the length of a string value associated with a key.
Retrieves a wide-character string associated with a key.
Retrieves a wide-character string associated with a key. This method allocates the memory for the string.
Retrieves the length of a byte array associated with a key.
Retrieves a byte array associated with a key.
Retrieves a byte array associated with a key. This method allocates the memory for the array.
Retrieves an interface pointer associated with a key.
Associates an attribute value with a key.
Removes a key/value pair from the object's attribute list.
Removes all key/value pairs from the object's attribute list.
Associates a UINT32 value with a key.
Associates a UINT64 value with a key.
Associates a double value with a key.
Associates a GUID value with a key.
Associates a wide-character string with a key.
Associates a byte array with a key.
Associates an IUnknown pointer with a key.
Locks the attribute store so that no other thread can access it.
Unlocks the attribute store.
Retrieves the number of attributes that are set on this object.
Retrieves an attribute at the specified index.
Copies all of the attributes from this object into another attribute store.
Retrieves the value associated with a key.
Retrieves the data type of the value associated with a key.
Queries whether a stored attribute value equals a specified PROPVARIANT.
Compares the attributes on this object with the attributes on another object.
Retrieves a UINT32 value associated with a key.
Retrieves a UINT64 value associated with a key.
Retrieves a double value associated with a key.
Retrieves a GUID value associated with a key.
Retrieves the length of a string value associated with a key.
Retrieves a wide-character string associated with a key.
Retrieves a wide-character string associated with a key. This method allocates the memory for the string.
Retrieves the length of a byte array associated with a key.
Retrieves a byte array associated with a key.
Retrieves a byte array associated with a key. This method allocates the memory for the array.
Retrieves an interface pointer associated with a key.
Associates an attribute value with a key.
Removes a key/value pair from the object's attribute list.
Removes all key/value pairs from the object's attribute list.
Associates a UINT32 value with a key.
Associates a UINT64 value with a key.
Associates a double value with a key.
Associates a GUID value with a key.
Associates a wide-character string with a key.
Associates a byte array with a key.
Associates an IUnknown pointer with a key.
Locks the attribute store so that no other thread can access it.
Unlocks the attribute store.
Retrieves the number of attributes that are set on this object.
Retrieves an attribute at the specified index.
Copies all of the attributes from this object into another attribute store.
Creates the object associated with this activation object.
Shuts down the created object.
Detaches the created object from the activation object.
Represents a generic collection of IUnknown pointers.
Retrieves the number of objects in the collection.
Retrieves an object in the collection.
Adds an object to the collection.
Removes an object from the collection.
Removes an object from the collection.
Removes all items from the collection.
IMFMediaEvent - Represents an event generated by a Media Foundation object. Use this interface to get information about the event.
http://msdn.microsoft.com/en-us/library/windows/desktop/ms702249%28v=vs.85%29.aspx
Mfobjects.h
Retrieves the value associated with a key.
Retrieves the data type of the value associated with a key.
Queries whether a stored attribute value equals a specified PROPVARIANT.
Compares the attributes on this object with the attributes on another object.
Retrieves a UINT32 value associated with a key.
Retrieves a UINT64 value associated with a key.
Retrieves a double value associated with a key.
Retrieves a GUID value associated with a key.
Retrieves the length of a string value associated with a key.
Retrieves a wide-character string associated with a key.
Retrieves a wide-character string associated with a key. This method allocates the memory for the string.
Retrieves the length of a byte array associated with a key.
Retrieves a byte array associated with a key.
Retrieves a byte array associated with a key. This method allocates the memory for the array.
Retrieves an interface pointer associated with a key.
Associates an attribute value with a key.
Removes a key/value pair from the object's attribute list.
Removes all key/value pairs from the object's attribute list.
Associates a UINT32 value with a key.
Associates a UINT64 value with a key.
Associates a double value with a key.
Associates a GUID value with a key.
Associates a wide-character string with a key.
Associates a byte array with a key.
Associates an IUnknown pointer with a key.
Locks the attribute store so that no other thread can access it.
Unlocks the attribute store.
Retrieves the number of attributes that are set on this object.
Retrieves an attribute at the specified index.
Copies all of the attributes from this object into another attribute store.
Retrieves the event type.
virtual HRESULT STDMETHODCALLTYPE GetType(
/* [out] */ __RPC__out MediaEventType *pmet) = 0;
Retrieves the extended type of the event.
virtual HRESULT STDMETHODCALLTYPE GetExtendedType(
/* [out] */ __RPC__out GUID *pguidExtendedType) = 0;
Retrieves an HRESULT that specifies the event status.
virtual HRESULT STDMETHODCALLTYPE GetStatus(
/* [out] */ __RPC__out HRESULT *phrStatus) = 0;
Retrieves the value associated with the event, if any.
virtual HRESULT STDMETHODCALLTYPE GetValue(
/* [out] */ __RPC__out PROPVARIANT *pvValue) = 0;
Implemented by the Microsoft Media Foundation sink writer object.
Adds a stream to the sink writer.
Sets the input format for a stream on the sink writer.
Initializes the sink writer for writing.
Delivers a sample to the sink writer.
Indicates a gap in an input stream.
Places a marker in the specified stream.
Notifies the media sink that a stream has reached the end of a segment.
Flushes one or more streams.
(Finalize) Completes all writing operations on the sink writer.
Queries the underlying media sink or encoder for an interface.
Gets statistics about the performance of the sink writer.
IMFTransform, defined in mftransform.h
Retrieves the minimum and maximum number of input and output streams.
virtual HRESULT STDMETHODCALLTYPE GetStreamLimits(
/* [out] */ __RPC__out DWORD *pdwInputMinimum,
/* [out] */ __RPC__out DWORD *pdwInputMaximum,
/* [out] */ __RPC__out DWORD *pdwOutputMinimum,
/* [out] */ __RPC__out DWORD *pdwOutputMaximum) = 0;
Retrieves the current number of input and output streams on this MFT.
virtual HRESULT STDMETHODCALLTYPE GetStreamCount(
/* [out] */ __RPC__out DWORD *pcInputStreams,
/* [out] */ __RPC__out DWORD *pcOutputStreams) = 0;
Retrieves the stream identifiers for the input and output streams on this MFT.
virtual HRESULT STDMETHODCALLTYPE GetStreamIDs(
DWORD dwInputIDArraySize,
/* [size_is][out] */ __RPC__out_ecount_full(dwInputIDArraySize) DWORD *pdwInputIDs,
DWORD dwOutputIDArraySize,
/* [size_is][out] */ __RPC__out_ecount_full(dwOutputIDArraySize) DWORD *pdwOutputIDs) = 0;
Gets the buffer requirements and other information for an input stream on this Media Foundation transform (MFT).
virtual HRESULT STDMETHODCALLTYPE GetInputStreamInfo(
DWORD dwInputStreamID,
/* [out] */ __RPC__out MFT_INPUT_STREAM_INFO *pStreamInfo) = 0;
Gets the buffer requirements and other information for an output stream on this Media Foundation transform (MFT).
virtual HRESULT STDMETHODCALLTYPE GetOutputStreamInfo(
DWORD dwOutputStreamID,
/* [out] */ __RPC__out MFT_OUTPUT_STREAM_INFO *pStreamInfo) = 0;
Gets the global attribute store for this Media Foundation transform (MFT).
virtual HRESULT STDMETHODCALLTYPE GetAttributes(
/* [out] */ __RPC__deref_out_opt IMFAttributes **pAttributes) = 0;
Retrieves the attribute store for an input stream on this MFT.
virtual HRESULT STDMETHODCALLTYPE GetInputStreamAttributes(
DWORD dwInputStreamID,
/* [out] */ __RPC__deref_out_opt IMFAttributes **pAttributes) = 0;
Retrieves the attribute store for an output stream on this MFT.
virtual HRESULT STDMETHODCALLTYPE GetOutputStreamAttributes(
DWORD dwOutputStreamID,
/* [out] */ __RPC__deref_out_opt IMFAttributes **pAttributes) = 0;
Removes an input stream from this MFT.
virtual HRESULT STDMETHODCALLTYPE DeleteInputStream(
DWORD dwStreamID) = 0;
Adds one or more new input streams to this MFT.
virtual HRESULT STDMETHODCALLTYPE AddInputStreams(
DWORD cStreams,
/* [in] */ __RPC__in DWORD *adwStreamIDs) = 0;
Gets an available media type for an input stream on this Media Foundation transform (MFT).
virtual HRESULT STDMETHODCALLTYPE GetInputAvailableType(
DWORD dwInputStreamID,
DWORD dwTypeIndex,
/* [out] */ __RPC__deref_out_opt IMFMediaType **ppType) = 0;
Retrieves an available media type for an output stream on this MFT.
virtual HRESULT STDMETHODCALLTYPE GetOutputAvailableType(
DWORD dwOutputStreamID,
DWORD dwTypeIndex,
/* [out] */ __RPC__deref_out_opt IMFMediaType **ppType) = 0;
Sets, tests, or clears the media type for an input stream on this Media Foundation transform (MFT).
virtual HRESULT STDMETHODCALLTYPE SetInputType(
DWORD dwInputStreamID,
/* [in] */ __RPC__in_opt IMFMediaType *pType,
DWORD dwFlags) = 0;
Sets, tests, or clears the media type for an output stream on this Media Foundation transform (MFT).
virtual HRESULT STDMETHODCALLTYPE SetOutputType(
DWORD dwOutputStreamID,
/* [in] */ __RPC__in_opt IMFMediaType *pType,
DWORD dwFlags) = 0;
Gets the current media type for an input stream on this Media Foundation transform (MFT).
virtual HRESULT STDMETHODCALLTYPE GetInputCurrentType(
DWORD dwInputStreamID,
/* [out] */ __RPC__deref_out_opt IMFMediaType **ppType) = 0;
Gets the current media type for an output stream on this Media Foundation transform (MFT).
virtual HRESULT STDMETHODCALLTYPE GetOutputCurrentType(
DWORD dwOutputStreamID,
/* [out] */ __RPC__deref_out_opt IMFMediaType **ppType) = 0;
Queries whether an input stream on this Media Foundation transform (MFT) can accept more data.
virtual HRESULT STDMETHODCALLTYPE GetInputStatus(
DWORD dwInputStreamID,
/* [out] */ __RPC__out DWORD *pdwFlags) = 0;
Queries whether the Media Foundation transform (MFT) is ready to produce output data.
virtual HRESULT STDMETHODCALLTYPE GetOutputStatus(
/* [out] */ __RPC__out DWORD *pdwFlags) = 0;
Sets the range of time stamps the client needs for output.
virtual HRESULT STDMETHODCALLTYPE SetOutputBounds(
LONGLONG hnsLowerBound,
LONGLONG hnsUpperBound) = 0;
Sends an event to an input stream on this Media Foundation transform (MFT).
virtual HRESULT STDMETHODCALLTYPE ProcessEvent(
DWORD dwInputStreamID,
/* [in] */ __RPC__in_opt IMFMediaEvent *pEvent) = 0;
Sends a message to the Media Foundation transform (MFT).
virtual HRESULT STDMETHODCALLTYPE ProcessMessage(
MFT_MESSAGE_TYPE eMessage,
ULONG_PTR ulParam) = 0;
Delivers data to an input stream on this Media Foundation transform (MFT).
virtual /* [local] */ HRESULT STDMETHODCALLTYPE ProcessInput(
DWORD dwInputStreamID,
IMFSample *pSample,
DWORD dwFlags) = 0;
Generates output from the current input data.
virtual /* [local] */ HRESULT STDMETHODCALLTYPE ProcessOutput(
DWORD dwFlags,
DWORD cOutputBufferCount,
/* [size_is][out][in] */ MFT_OUTPUT_DATA_BUFFER *pOutputSamples,
/* [out] */ DWORD *pdwStatus) = 0;
See mfobjects.h
Unknown event type.
Signals a serious error.
Custom event type.
A non-fatal error occurred during streaming.
Session Unknown
Raised after the IMFMediaSession::SetTopology method completes asynchronously
Raised by the Media Session when the IMFMediaSession::ClearTopologies method completes asynchronously.
Raised when the IMFMediaSession::Start method completes asynchronously.
Raised when the IMFMediaSession::Pause method completes asynchronously.
Raised when the IMFMediaSession::Stop method completes asynchronously.
Raised when the IMFMediaSession::Close method completes asynchronously.
Raised by the Media Session when it has finished playing the last presentation in the playback queue.
Raised by the Media Session when the playback rate changes.
Raised by the Media Session when it completes a scrubbing request.
Raised by the Media Session when the session capabilities change.
Raised by the Media Session when the status of a topology changes.
Raised by the Media Session when a new presentation starts.
Raised by a media source a new presentation is ready.
License acquisition is about to begin.
License acquisition is complete.
Individualization is about to begin.
Individualization is complete.
Signals the progress of a content enabler object.
A content enabler object's action is complete.
Raised by a trusted output if an error occurs while enforcing the output policy.
Contains status information about the enforcement of an output policy.
A media source started to buffer data.
A media source stopped buffering data.
The network source started opening a URL.
The network source finished opening a URL.
Raised by a media source at the start of a reconnection attempt.
Raised by a media source at the end of a reconnection attempt.
Raised by the enhanced video renderer (EVR) when it receives a user event from the presenter.
Raised by the Media Session when the format changes on a media sink.
Source Unknown
Raised when a media source starts without seeking.
Raised by a media stream when the source starts without seeking.
Raised when a media source seeks to a new position.
Raised by a media stream after a call to IMFMediaSource::Start causes a seek in the stream.
Raised by a media source when it starts a new stream.
Raised by a media source when it restarts or seeks a stream that is already active.
Raised by a media source when the IMFMediaSource::Stop method completes asynchronously.
Raised by a media stream when the IMFMediaSource::Stop method completes asynchronously.
Raised by a media source when the IMFMediaSource::Pause method completes asynchronously.
Raised by a media stream when the IMFMediaSource::Pause method completes asynchronously.
Raised by a media source when a presentation ends.
Raised by a media stream when the stream ends.
Raised when a media stream delivers a new sample.
Signals that a media stream does not have data available at a specified time.
Raised by a media stream when it starts or stops thinning the stream.
Raised by a media stream when the media type of the stream changes.
Raised by a media source when the playback rate changes.
Raised by the sequencer source when a segment is completed and is followed by another segment.
Raised by a media source when the source's characteristics change.
Raised by a media source to request a new playback rate.
Raised by a media source when it updates its metadata.
Raised by the sequencer source when the IMFSequencerSource::UpdateTopology method completes asynchronously.
Sink Unknown
Raised by a stream sink when it completes the transition to the running state.
Raised by a stream sink when it completes the transition to the stopped state.
Raised by a stream sink when it completes the transition to the paused state.
Raised by a stream sink when the rate has changed.
Raised by a stream sink to request a new media sample from the pipeline.
Raised by a stream sink after the IMFStreamSink::PlaceMarker method is called.
Raised by a stream sink when the stream has received enough preroll data to begin rendering.
Raised by a stream sink when it completes a scrubbing request.
Raised by a stream sink when the sink's media type is no longer valid.
Raised by the stream sinks of the EVR if the video device changes.
Provides feedback about playback quality to the quality manager.
Raised when a media sink becomes invalid.
The audio session display name changed.
The volume or mute state of the audio session changed
The audio device was removed.
The Windows audio server system was shut down.
The grouping parameters changed for the audio session.
The audio session icon changed.
The default audio format for the audio device changed.
The audio session was disconnected from a Windows Terminal Services session
The audio session was preempted by an exclusive-mode connection.
Trust Unknown
The output policy for a stream changed.
Content protection message
The IMFOutputTrustAuthority::SetPolicy method completed.
DRM License Backup Completed
DRM License Backup Progress
DRM License Restore Completed
DRM License Restore Progress
DRM License Acquisition Completed
DRM Individualization Completed
DRM Individualization Progress
DRM Proximity Completed
DRM License Store Cleaned
DRM Revocation Download Completed
Transform Unknown
Sent by an asynchronous MFT to request a new input sample.
Sent by an asynchronous MFT when new output data is available from the MFT.
Sent by an asynchronous Media Foundation transform (MFT) when a drain operation is complete.
Sent by an asynchronous MFT in response to an MFT_MESSAGE_COMMAND_MARKER message.
Media Foundation attribute guids
http://msdn.microsoft.com/en-us/library/windows/desktop/ms696989%28v=vs.85%29.aspx
Specifies whether an MFT performs asynchronous processing.
Enables the use of an asynchronous MFT.
Contains flags for an MFT activation object.
Specifies the category for an MFT.
Contains the class identifier (CLSID) of an MFT.
Contains the registered input types for a Media Foundation transform (MFT).
Contains the registered output types for a Media Foundation transform (MFT).
Contains the symbolic link for a hardware-based MFT.
Contains the display name for a hardware-based MFT.
Contains a pointer to the stream attributes of the connected stream on a hardware-based MFT.
Specifies whether a hardware-based MFT is connected to another hardware-based MFT.
Specifies the preferred output format for an encoder.
Specifies whether an MFT is registered only in the application's process.
Contains configuration properties for an encoder.
Specifies whether a hardware device source uses the system time for time stamps.
Contains an IMFFieldOfUseMFTUnlock pointer, which can be used to unlock the MFT.
Contains the merit value of a hardware codec.
Specifies whether a decoder is optimized for transcoding rather than for playback.
Contains a pointer to the proxy object for the application's presentation descriptor.
Contains a pointer to the presentation descriptor from the protected media path (PMP).
Specifies the duration of a presentation, in 100-nanosecond units.
Specifies the total size of the source file, in bytes.
Specifies the audio encoding bit rate for the presentation, in bits per second.
Specifies the video encoding bit rate for the presentation, in bits per second.
Specifies the MIME type of the content.
Specifies when a presentation was last modified.
The identifier of the playlist element in the presentation.
Contains the preferred RFC 1766 language of the media source.
The time at which the presentation must begin, relative to the start of the media source.
Specifies whether the audio streams in the presentation have a variable bit rate.
Media type Major Type
Media Type subtype
Audio block alignment
Audio average bytes per second
Audio number of channels
Audio samples per second
Audio bits per sample
Enables the source reader or sink writer to use hardware-based Media Foundation transforms (MFTs).
Contains additional format data for a media type.
Specifies for a media type whether each sample is independent of the other samples in the stream.
Specifies for a media type whether the samples have a fixed size.
Contains a DirectShow format GUID for a media type.
Specifies the preferred legacy format structure to use when converting an audio media type.
Specifies for a media type whether the media data is compressed.
Approximate data rate of the video stream, in bits per second, for a video media type.
Specifies the payload type of an Advanced Audio Coding (AAC) stream.
0 - The stream contains raw_data_block elements only
1 - Audio Data Transport Stream (ADTS). The stream contains an adts_sequence, as defined by MPEG-2.
2 - Audio Data Interchange Format (ADIF). The stream contains an adif_sequence, as defined by MPEG-2.
3 - The stream contains an MPEG-4 audio transport stream with a synchronization layer (LOAS) and a multiplex layer (LATM).
Specifies the audio profile and level of an Advanced Audio Coding (AAC) stream, as defined by ISO/IEC 14496-3.
Main interface for using Media Foundation with NAudio
initializes MediaFoundation - only needs to be called once per process
Enumerate the installed MediaFoundation transforms in the specified category
A category from MediaFoundationTransformCategories
uninitializes MediaFoundation
Creates a Media type
Creates a media type from a WaveFormat
Creates a memory buffer of the specified size
Memory buffer size in bytes
The memory buffer
Creates a sample object
The sample object
Creates a new attributes store
Initial size
The attributes store
Creates a media foundation byte stream based on a stream object
(usable with WinRT streams)
The input stream
A media foundation byte stream
Creates a source reader based on a byte stream
The byte stream
A media foundation source reader
Interop definitions for MediaFoundation
thanks to Lucian Wischik for the initial work on many of these definitions (also various interfaces)
n.b. the goal is to make as much of this internal as possible, and provide
better .NET APIs using the MediaFoundationApi class instead
All streams
First audio stream
First video stream
Media source
Media Foundation SDK Version
Media Foundation API Version
Media Foundation Version
Initializes Microsoft Media Foundation.
Shuts down the Microsoft Media Foundation platform
Creates an empty media type.
Initializes a media type from a WAVEFORMATEX structure.
Converts a Media Foundation audio media type to a WAVEFORMATEX structure.
TODO: try making second parameter out WaveFormatExtraData
Creates the source reader from a URL.
Creates the source reader from a byte stream.
Creates the sink writer from a URL or byte stream.
Creates a Microsoft Media Foundation byte stream that wraps an IRandomAccessStream object.
Gets a list of Microsoft Media Foundation transforms (MFTs) that match specified search criteria.
Creates an empty media sample.
Allocates system memory and creates a media buffer to manage it.
Creates an empty attribute store.
Gets a list of output formats from an audio encoder.
IMFByteStream
http://msdn.microsoft.com/en-gb/library/windows/desktop/ms698720%28v=vs.85%29.aspx
Retrieves the characteristics of the byte stream.
virtual HRESULT STDMETHODCALLTYPE GetCapabilities(/*[out]*/ __RPC__out DWORD *pdwCapabilities) = 0;
Retrieves the length of the stream.
virtual HRESULT STDMETHODCALLTYPE GetLength(/*[out]*/ __RPC__out QWORD *pqwLength) = 0;
Sets the length of the stream.
virtual HRESULT STDMETHODCALLTYPE SetLength(/*[in]*/ QWORD qwLength) = 0;
Retrieves the current read or write position in the stream.
virtual HRESULT STDMETHODCALLTYPE GetCurrentPosition(/*[out]*/ __RPC__out QWORD *pqwPosition) = 0;
Sets the current read or write position.
virtual HRESULT STDMETHODCALLTYPE SetCurrentPosition(/*[in]*/ QWORD qwPosition) = 0;
Queries whether the current position has reached the end of the stream.
virtual HRESULT STDMETHODCALLTYPE IsEndOfStream(/*[out]*/ __RPC__out BOOL *pfEndOfStream) = 0;
Reads data from the stream.
virtual HRESULT STDMETHODCALLTYPE Read(/*[size_is][out]*/ __RPC__out_ecount_full(cb) BYTE *pb, /*[in]*/ ULONG cb, /*[out]*/ __RPC__out ULONG *pcbRead) = 0;
Begins an asynchronous read operation from the stream.
virtual /*[local]*/ HRESULT STDMETHODCALLTYPE BeginRead(/*[out]*/ _Out_writes_bytes_(cb) BYTE *pb, /*[in]*/ ULONG cb, /*[in]*/ IMFAsyncCallback *pCallback, /*[in]*/ IUnknown *punkState) = 0;
Completes an asynchronous read operation.
virtual /*[local]*/ HRESULT STDMETHODCALLTYPE EndRead(/*[in]*/ IMFAsyncResult *pResult, /*[out]*/ _Out_ ULONG *pcbRead) = 0;
Writes data to the stream.
virtual HRESULT STDMETHODCALLTYPE Write(/*[size_is][in]*/ __RPC__in_ecount_full(cb) const BYTE *pb, /*[in]*/ ULONG cb, /*[out]*/ __RPC__out ULONG *pcbWritten) = 0;
Begins an asynchronous write operation to the stream.
virtual /*[local]*/ HRESULT STDMETHODCALLTYPE BeginWrite(/*[in]*/ _In_reads_bytes_(cb) const BYTE *pb, /*[in]*/ ULONG cb, /*[in]*/ IMFAsyncCallback *pCallback, /*[in]*/ IUnknown *punkState) = 0;
Completes an asynchronous write operation.
virtual /*[local]*/ HRESULT STDMETHODCALLTYPE EndWrite(/*[in]*/ IMFAsyncResult *pResult, /*[out]*/ _Out_ ULONG *pcbWritten) = 0;
Moves the current position in the stream by a specified offset.
virtual HRESULT STDMETHODCALLTYPE Seek(/*[in]*/ MFBYTESTREAM_SEEK_ORIGIN SeekOrigin, /*[in]*/ LONGLONG llSeekOffset, /*[in]*/ DWORD dwSeekFlags, /*[out]*/ __RPC__out QWORD *pqwCurrentPosition) = 0;
Clears any internal buffers used by the stream.
virtual HRESULT STDMETHODCALLTYPE Flush( void) = 0;
Closes the stream and releases any resources associated with the stream.
virtual HRESULT STDMETHODCALLTYPE Close( void) = 0;
IMFMediaBuffer
http://msdn.microsoft.com/en-gb/library/windows/desktop/ms696261%28v=vs.85%29.aspx
Gives the caller access to the memory in the buffer.
Unlocks a buffer that was previously locked.
Retrieves the length of the valid data in the buffer.
Sets the length of the valid data in the buffer.
Retrieves the allocated size of the buffer.
Represents a description of a media format.
http://msdn.microsoft.com/en-us/library/windows/desktop/ms704850%28v=vs.85%29.aspx
Retrieves the value associated with a key.
Retrieves the data type of the value associated with a key.
Queries whether a stored attribute value equals a specified PROPVARIANT.
Compares the attributes on this object with the attributes on another object.
Retrieves a UINT32 value associated with a key.
Retrieves a UINT64 value associated with a key.
Retrieves a double value associated with a key.
Retrieves a GUID value associated with a key.
Retrieves the length of a string value associated with a key.
Retrieves a wide-character string associated with a key.
Retrieves a wide-character string associated with a key. This method allocates the memory for the string.
Retrieves the length of a byte array associated with a key.
Retrieves a byte array associated with a key.
Retrieves a byte array associated with a key. This method allocates the memory for the array.
Retrieves an interface pointer associated with a key.
Associates an attribute value with a key.
Removes a key/value pair from the object's attribute list.
Removes all key/value pairs from the object's attribute list.
Associates a UINT32 value with a key.
Associates a UINT64 value with a key.
Associates a double value with a key.
Associates a GUID value with a key.
Associates a wide-character string with a key.
Associates a byte array with a key.
Associates an IUnknown pointer with a key.
Locks the attribute store so that no other thread can access it.
Unlocks the attribute store.
Retrieves the number of attributes that are set on this object.
Retrieves an attribute at the specified index.
Copies all of the attributes from this object into another attribute store.
Retrieves the major type of the format.
Queries whether the media type is a compressed format.
Compares two media types and determines whether they are identical.
Retrieves an alternative representation of the media type.
Frees memory that was allocated by the GetRepresentation method.
http://msdn.microsoft.com/en-gb/library/windows/desktop/ms702192%28v=vs.85%29.aspx
Retrieves the value associated with a key.
Retrieves the data type of the value associated with a key.
Queries whether a stored attribute value equals a specified PROPVARIANT.
Compares the attributes on this object with the attributes on another object.
Retrieves a UINT32 value associated with a key.
Retrieves a UINT64 value associated with a key.
Retrieves a double value associated with a key.
Retrieves a GUID value associated with a key.
Retrieves the length of a string value associated with a key.
Retrieves a wide-character string associated with a key.
Retrieves a wide-character string associated with a key. This method allocates the memory for the string.
Retrieves the length of a byte array associated with a key.
Retrieves a byte array associated with a key.
Retrieves a byte array associated with a key. This method allocates the memory for the array.
Retrieves an interface pointer associated with a key.
Associates an attribute value with a key.
Removes a key/value pair from the object's attribute list.
Removes all key/value pairs from the object's attribute list.
Associates a UINT32 value with a key.
Associates a UINT64 value with a key.
Associates a double value with a key.
Associates a GUID value with a key.
Associates a wide-character string with a key.
Associates a byte array with a key.
Associates an IUnknown pointer with a key.
Locks the attribute store so that no other thread can access it.
Unlocks the attribute store.
Retrieves the number of attributes that are set on this object.
Retrieves an attribute at the specified index.
Copies all of the attributes from this object into another attribute store.
Retrieves flags associated with the sample.
Sets flags associated with the sample.
Retrieves the presentation time of the sample.
Sets the presentation time of the sample.
Retrieves the duration of the sample.
Sets the duration of the sample.
Retrieves the number of buffers in the sample.
Retrieves a buffer from the sample.
Converts a sample with multiple buffers into a sample with a single buffer.
Adds a buffer to the end of the list of buffers in the sample.
Removes a buffer at a specified index from the sample.
Removes all buffers from the sample.
Retrieves the total length of the valid data in all of the buffers in the sample.
Copies the sample data to a buffer.
IMFSourceReader interface
http://msdn.microsoft.com/en-us/library/windows/desktop/dd374655%28v=vs.85%29.aspx
Queries whether a stream is selected.
Selects or deselects one or more streams.
Gets a format that is supported natively by the media source.
Gets the current media type for a stream.
Sets the media type for a stream.
Seeks to a new position in the media source.
Reads the next sample from the media source.
Flushes one or more streams.
Queries the underlying media source or decoder for an interface.
Gets an attribute from the underlying media source.
Contains flags that indicate the status of the IMFSourceReader::ReadSample method
http://msdn.microsoft.com/en-us/library/windows/desktop/dd375773(v=vs.85).aspx
No Error
An error occurred. If you receive this flag, do not make any further calls to IMFSourceReader methods.
The source reader reached the end of the stream.
One or more new streams were created
The native format has changed for one or more streams. The native format is the format delivered by the media source before any decoders are inserted.
The current media has type changed for one or more streams. To get the current media type, call the IMFSourceReader::GetCurrentMediaType method.
There is a gap in the stream. This flag corresponds to an MEStreamTick event from the media source.
All transforms inserted by the application have been removed for a particular stream.
Media Foundation Transform Categories
MFT_CATEGORY_VIDEO_DECODER
MFT_CATEGORY_VIDEO_ENCODER
MFT_CATEGORY_VIDEO_EFFECT
MFT_CATEGORY_MULTIPLEXER
MFT_CATEGORY_DEMULTIPLEXER
MFT_CATEGORY_AUDIO_DECODER
MFT_CATEGORY_AUDIO_ENCODER
MFT_CATEGORY_AUDIO_EFFECT
MFT_CATEGORY_VIDEO_PROCESSOR
MFT_CATEGORY_OTHER
Contains information about an input stream on a Media Foundation transform (MFT)
Maximum amount of time between an input sample and the corresponding output sample, in 100-nanosecond units.
Bitwise OR of zero or more flags from the _MFT_INPUT_STREAM_INFO_FLAGS enumeration.
The minimum size of each input buffer, in bytes.
Maximum amount of input data, in bytes, that the MFT holds to perform lookahead.
The memory alignment required for input buffers. If the MFT does not require a specific alignment, the value is zero.
Contains information about an output buffer for a Media Foundation transform.
Output stream identifier.
Pointer to the IMFSample interface.
Before calling ProcessOutput, set this member to zero.
Before calling ProcessOutput, set this member to NULL.
Contains information about an output stream on a Media Foundation transform (MFT).
Bitwise OR of zero or more flags from the _MFT_OUTPUT_STREAM_INFO_FLAGS enumeration.
Minimum size of each output buffer, in bytes.
The memory alignment required for output buffers.
Defines messages for a Media Foundation transform (MFT).
Requests the MFT to flush all stored data.
Requests the MFT to drain any stored data.
Sets or clears the Direct3D Device Manager for DirectX Video Accereration (DXVA).
Drop samples - requires Windows 7
Command Tick - requires Windows 8
Notifies the MFT that streaming is about to begin.
Notifies the MFT that streaming is about to end.
Notifies the MFT that an input stream has ended.
Notifies the MFT that the first sample is about to be processed.
Marks a point in the stream. This message applies only to asynchronous MFTs. Requires Windows 7
Contains media type information for registering a Media Foundation transform (MFT).
The major media type.
The Media Subtype
Contains statistics about the performance of the sink writer.
The size of the structure, in bytes.
The time stamp of the most recent sample given to the sink writer.
The time stamp of the most recent sample to be encoded.
The time stamp of the most recent sample given to the media sink.
The time stamp of the most recent stream tick.
The system time of the most recent sample request from the media sink.
The number of samples received.
The number of samples encoded.
The number of samples given to the media sink.
The number of stream ticks received.
The amount of data, in bytes, currently waiting to be processed.
The total amount of data, in bytes, that has been sent to the media sink.
The number of pending sample requests.
The average rate, in media samples per 100-nanoseconds, at which the application sent samples to the sink writer.
The average rate, in media samples per 100-nanoseconds, at which the sink writer sent samples to the encoder
The average rate, in media samples per 100-nanoseconds, at which the sink writer sent samples to the media sink.
Contains flags for registering and enumeration Media Foundation transforms (MFTs).
None
The MFT performs synchronous data processing in software.
The MFT performs asynchronous data processing in software.
The MFT performs hardware-based data processing, using either the AVStream driver or a GPU-based proxy MFT.
The MFT that must be unlocked by the application before use.
For enumeration, include MFTs that were registered in the caller's process.
The MFT is optimized for transcoding rather than playback.
For enumeration, sort and filter the results.
Bitwise OR of all the flags, excluding MFT_ENUM_FLAG_SORTANDFILTER.
Indicates the status of an input stream on a Media Foundation transform (MFT).
None
The input stream can receive more data at this time.
Describes an input stream on a Media Foundation transform (MFT).
No flags set
Each media sample (IMFSample interface) of input data must contain complete, unbroken units of data.
Each media sample that the client provides as input must contain exactly one unit of data, as defined for the MFT_INPUT_STREAM_WHOLE_SAMPLES flag.
All input samples must be the same size.
MTF Input Stream Holds buffers
The MFT does not hold input samples after the IMFTransform::ProcessInput method returns.
This input stream can be removed by calling IMFTransform::DeleteInputStream.
This input stream is optional.
The MFT can perform in-place processing.
Defines flags for the IMFTransform::ProcessOutput method.
None
The MFT can still generate output from this stream without receiving any more input.
The format has changed on this output stream, or there is a new preferred format for this stream.
The MFT has removed this output stream.
There is no sample ready for this stream.
Indicates whether a Media Foundation transform (MFT) can produce output data.
None
There is a sample available for at least one output stream.
Describes an output stream on a Media Foundation transform (MFT).
No flags set
Each media sample (IMFSample interface) of output data from the MFT contains complete, unbroken units of data.
Each output sample contains exactly one unit of data, as defined for the MFT_OUTPUT_STREAM_WHOLE_SAMPLES flag.
All output samples are the same size.
The MFT can discard the output data from this output stream, if requested by the client.
This output stream is optional.
The MFT provides the output samples for this stream, either by allocating them internally or by operating directly on the input samples.
The MFT can either provide output samples for this stream or it can use samples that the client allocates.
The MFT does not require the client to process the output for this stream.
The MFT might remove this output stream during streaming.
Defines flags for processing output samples in a Media Foundation transform (MFT).
None
Do not produce output for streams in which the pSample member of the MFT_OUTPUT_DATA_BUFFER structure is NULL.
Regenerates the last output sample.
Process Output Status flags
None
The Media Foundation transform (MFT) has created one or more new output streams.
Defines flags for the setting or testing the media type on a Media Foundation transform (MFT).
None
Test the proposed media type, but do not set it.
MIDI In Message Information
Create a new MIDI In Message EventArgs
The Raw message received from the MIDI In API
The raw message interpreted as a MidiEvent
The timestamp in milliseconds for this message
these will become extension methods once we move to .NET 3.5
Checks if the buffer passed in is entirely full of nulls
Converts to a string containing the buffer described in hex
Decodes the buffer using the specified encoding, stopping at the first null
Concatenates the given arrays into a single array.
The arrays to concatenate
The concatenated resulting array.
Helper to get descriptions
Describes the Guid by looking for a FieldDescription attribute on the specified class
WavePosition extension methods
Get Position as timespan
Methods for converting between IEEE 80-bit extended double precision
and standard C# double precision.
Converts a C# double precision number to an 80-bit
IEEE extended double precision number (occupying 10 bytes).
The double precision number to convert to IEEE extended.
An array of 10 bytes containing the IEEE extended number.
Converts an IEEE 80-bit extended precision number to a
C# double precision number.
The 80-bit IEEE extended number (as an array of 10 bytes).
A C# double precision number that is a close representation of the IEEE extended number.
General purpose native methods for internal NAudio use
ASIODriverCapability holds all the information from the ASIODriver.
Use ASIODriverExt to get the Capabilities
ASIO Sample Type
Int 16 MSB
Int 24 MSB (used for 20 bits as well)
Int 32 MSB
IEEE 754 32 bit float
IEEE 754 64 bit double float
32 bit data with 16 bit alignment
32 bit data with 18 bit alignment
32 bit data with 20 bit alignment
32 bit data with 24 bit alignment
Int 16 LSB
Int 24 LSB
used for 20 bits as well
Int 32 LSB
IEEE 754 32 bit float, as found on Intel x86 architecture
IEEE 754 64 bit double float, as found on Intel x86 architecture
32 bit data with 16 bit alignment
32 bit data with 18 bit alignment
32 bit data with 20 bit alignment
32 bit data with 24 bit alignment
DSD 1 bit data, 8 samples per byte. First sample in Least significant bit.
DSD 1 bit data, 8 samples per byte. First sample in Most significant bit.
DSD 8 bit data, 1 sample per byte. No Endianness required.
Flags for use with acmDriverAdd
ACM_DRIVERADDF_LOCAL
ACM_DRIVERADDF_GLOBAL
ACM_DRIVERADDF_FUNCTION
ACM_DRIVERADDF_NOTIFYHWND
ADSR sample provider allowing you to specify attack, decay, sustain and release values
Like IWaveProvider, but makes it much simpler to put together a 32 bit floating
point mixing engine
Fill the specified buffer with 32 bit floating point samples
The buffer to fill with samples.
Offset into buffer
The number of samples to read
the number of samples written to the buffer.
Gets the WaveFormat of this Sample Provider.
The wave format.
Creates a new AdsrSampleProvider with default values
Reads audio from this sample provider
Enters the Release phase
Attack time in seconds
Release time in seconds
The output WaveFormat
Sample Provider to allow fading in and out
Creates a new FadeInOutSampleProvider
The source stream with the audio to be faded in or out
If true, we start faded out
Requests that a fade-in begins (will start on the next call to Read)
Duration of fade in milliseconds
Requests that a fade-out begins (will start on the next call to Read)
Duration of fade in milliseconds
Reads samples from this sample provider
Buffer to read into
Offset within buffer to write to
Number of samples desired
Number of samples read
WaveFormat of this SampleProvider
Allows any number of inputs to be patched to outputs
Uses could include swapping left and right channels, turning mono into stereo,
feeding different input sources to different soundcard outputs etc
Creates a multiplexing sample provider, allowing re-patching of input channels to different
output channels
Input sample providers. Must all be of the same sample rate, but can have any number of channels
Desired number of output channels.
persistent temporary buffer to prevent creating work for garbage collector
Reads samples from this sample provider
Buffer to be filled with sample data
Offset into buffer to start writing to, usually 0
Number of samples required
Number of samples read
Connects a specified input channel to an output channel
Input Channel index (zero based). Must be less than InputChannelCount
Output Channel index (zero based). Must be less than OutputChannelCount
The output WaveFormat for this SampleProvider
The number of input channels. Note that this is not the same as the number of input wave providers. If you pass in
one stereo and one mono input provider, the number of input channels is three.
The number of output channels, as specified in the constructor.
Allows you to:
1. insert a pre-delay of silence before the source begins
2. skip over a certain amount of the beginning of the source
3. only play a set amount from the source
4. insert silence at the end after the source is complete
Creates a new instance of offsetSampleProvider
The Source Sample Provider to read from
Reads from this sample provider
Sample buffer
Offset within sample buffer to read to
Number of samples required
Number of samples read
Number of samples of silence to insert before playing source
Amount of silence to insert before playing
Number of samples in source to discard
Amount of audio to skip over from the source before beginning playback
Number of samples to read from source (if 0, then read it all)
Amount of audio to take from the source (TimeSpan.Zero means play to end)
Number of samples of silence to insert after playing source
Amount of silence to insert after playing source
The WaveFormat of this SampleProvider
Converts an IWaveProvider containing 32 bit PCM to an
ISampleProvider
Helper base class for classes converting to ISampleProvider
Source Wave Provider
Source buffer (to avoid constantly creating small buffers during playback)
Initialises a new instance of SampleProviderConverterBase
Source Wave provider
Reads samples from the source wave provider
Sample buffer
Offset into sample buffer
Number of samples required
Number of samples read
Ensure the source buffer exists and is big enough
Bytes required
Wave format of this wave provider
Initialises a new instance of Pcm32BitToSampleProvider
Source Wave Provider
Reads floating point samples from this sample provider
sample buffer
offset within sample buffer to write to
number of samples required
number of samples provided
Utility class for converting to SampleProvider
Helper function to go from IWaveProvider to a SampleProvider
Must already be PCM or IEEE float
The WaveProvider to convert
A sample provider
Converts a sample provider to 16 bit PCM, optionally clipping and adjusting volume along the way
Generic interface for all WaveProviders.
Fill the specified buffer with wave data.
The buffer to fill of wave data.
Offset into buffer
The number of bytes to read
the number of bytes written to the buffer.
Gets the WaveFormat of this WaveProvider.
The wave format.
Converts from an ISampleProvider (IEEE float) to a 16 bit PCM IWaveProvider.
Number of channels and sample rate remain unchanged.
The input source provider
Reads bytes from this wave stream
The destination buffer
Offset into the destination buffer
Number of bytes read
Number of bytes read.
Volume of this channel. 1.0 = full scale
Converts a sample provider to 24 bit PCM, optionally clipping and adjusting volume along the way
Converts from an ISampleProvider (IEEE float) to a 16 bit PCM IWaveProvider.
Number of channels and sample rate remain unchanged.
The input source provider
Reads bytes from this wave stream, clipping if necessary
The destination buffer
Offset into the destination buffer
Number of bytes read
Number of bytes read.
The Format of this IWaveProvider
Volume of this channel. 1.0 = full scale, 0.0 to mute
Signal Generator
Sin, Square, Triangle, SawTooth, White Noise, Pink Noise, Sweep.
Posibility to change ISampleProvider
Example :
---------
WaveOut _waveOutGene = new WaveOut();
WaveGenerator wg = new SignalGenerator();
wg.Type = ...
wg.Frequency = ...
wg ...
_waveOutGene.Init(wg);
_waveOutGene.Play();
Initializes a new instance for the Generator (Default :: 44.1Khz, 2 channels, Sinus, Frequency = 440, Gain = 1)
Initializes a new instance for the Generator (UserDef SampleRate & Channels)
Desired sample rate
Number of channels
Reads from this provider.
Private :: Random for WhiteNoise & Pink Noise (Value form -1 to 1)
Random value from -1 to +1
The waveformat of this WaveProvider (same as the source)
Frequency for the Generator. (20.0 - 20000.0 Hz)
Sin, Square, Triangle, SawTooth, Sweep (Start Frequency).
Return Log of Frequency Start (Read only)
End Frequency for the Sweep Generator. (Start Frequency in Frequency)
Return Log of Frequency End (Read only)
Gain for the Generator. (0.0 to 1.0)
Channel PhaseReverse
Type of Generator.
Length Seconds for the Sweep Generator.
Signal Generator type
Pink noise
White noise
Sweep
Sine wave
Square wave
Triangle Wave
Sawtooth wave
Helper class turning an already 64 bit floating point IWaveProvider
into an ISampleProvider - hopefully not needed for most applications
Initializes a new instance of the WaveToSampleProvider class
Source wave provider, must be IEEE float
Reads from this provider
Fully managed resampling sample provider, based on the WDL Resampler
Constructs a new resampler
Source to resample
Desired output sample rate
Reads from this sample provider
Output WaveFormat
Useful extension methods to make switching between WaveAndSampleProvider easier
Converts a WaveProvider into a SampleProvider (only works for PCM)
WaveProvider to convert
Allows sending a SampleProvider directly to an IWavePlayer without needing to convert
back to an IWaveProvider
The WavePlayer
Recording using waveIn api with event callbacks.
Use this for recording in non-gui applications
Events are raised as recorded buffers are made available
Generic interface for wave recording
Start Recording
Stop Recording
Recording WaveFormat
Indicates recorded data is available
Indicates that all recorded data has now been received.
Prepares a Wave input device for recording
Retrieves the capabilities of a waveIn device
Device to test
The WaveIn device capabilities
Start recording
Stop recording
Dispose pattern
Microphone Level
Dispose method
Indicates recorded data is available
Indicates that all recorded data has now been received.
Returns the number of Wave In devices available in the system
Milliseconds for the buffer. Recommended value is 100ms
Number of Buffers to use (usually 2 or 3)
The device number to use
WaveFormat we are recording in
Audio Capture using Wasapi
See http://msdn.microsoft.com/en-us/library/dd370800%28VS.85%29.aspx
Initialises a new instance of the WASAPI capture class
Initialises a new instance of the WASAPI capture class
Capture device to use
Initializes a new instance of the class.
The capture device.
true if sync is done with event. false use sleep.
Gets the default audio capture device
The default audio capture device
To allow overrides to specify different flags (e.g. loopback)
Start Recording
Stop Recording (requests a stop, wait for RecordingStopped event to know it has finished)
Dispose
Indicates recorded data is available
Indicates that all recorded data has now been received.
Share Mode - set before calling StartRecording
Recording wave format
Contains the name and CLSID of a DirectX Media Object
Initializes a new instance of DmoDescriptor
Name
Clsid
DirectX Media Object Enumerator
Get audio effect names
Audio effect names
Get audio encoder names
Audio encoder names
Get audio decoder names
Audio decoder names
DMO Guids for use with DMOEnum
dmoreg.h
MediaErr.h
DMO_PARTIAL_MEDIATYPE
defined in Medparam.h
Windows Media Resampler Props
wmcodecdsp.h
Range is 1 to 60
Specifies the channel matrix.
Attempting to implement the COM IMediaBuffer interface as a .NET object
Not sure what will happen when I pass this to an unmanaged object
IMediaBuffer Interface
Set Length
Length
HRESULT
Get Max Length
Max Length
HRESULT
Get Buffer and Length
Pointer to variable into which to write the Buffer Pointer
Pointer to variable into which to write the Valid Data Length
HRESULT
Creates a new Media Buffer
Maximum length in bytes
Dispose and free memory for buffer
Finalizer
Set length of valid data in the buffer
length
HRESULT
Gets the maximum length of the buffer
Max length (output parameter)
HRESULT
Gets buffer and / or length
Pointer to variable into which buffer pointer should be written
Pointer to variable into which valid data length should be written
HRESULT
Loads data into this buffer
Data to load
Number of bytes to load
Retrieves the data in the output buffer
buffer to retrieve into
offset within that buffer
Length of data in the media buffer
Media Object
Creates a new Media Object
Media Object COM interface
Gets the input media type for the specified input stream
Input stream index
Input type index
DMO Media Type or null if there are no more input types
Gets the DMO Media Output type
The output stream
Output type index
DMO Media Type or null if no more available
retrieves the media type that was set for an output stream, if any
Output stream index
DMO Media Type or null if no more available
Enumerates the supported input types
Input stream index
Enumeration of input types
Enumerates the output types
Output stream index
Enumeration of supported output types
Querys whether a specified input type is supported
Input stream index
Media type to check
true if supports
Sets the input type helper method
Input stream index
Media type
Flags (can be used to test rather than set)
Sets the input type
Input stream index
Media Type
Sets the input type to the specified Wave format
Input stream index
Wave format
Requests whether the specified Wave format is supported as an input
Input stream index
Wave format
true if supported
Helper function to make a DMO Media Type to represent a particular WaveFormat
Checks if a specified output type is supported
n.b. you may need to set the input type first
Output stream index
Media type
True if supported
Tests if the specified Wave Format is supported for output
n.b. may need to set the input type first
Output stream index
Wave format
True if supported
Helper method to call SetOutputType
Sets the output type
n.b. may need to set the input type first
Output stream index
Media type to set
Set output type to the specified wave format
n.b. may need to set input type first
Output stream index
Wave format
Get Input Size Info
Input Stream Index
Input Size Info
Get Output Size Info
Output Stream Index
Output Size Info
Process Input
Input Stream index
Media Buffer
Flags
Timestamp
Duration
Process Output
Flags
Output buffer count
Output buffers
Gives the DMO a chance to allocate any resources needed for streaming
Tells the DMO to free any resources needed for streaming
Gets maximum input latency
input stream index
Maximum input latency as a ref-time
Flushes all buffered data
Report a discontinuity on the specified input stream
Input Stream index
Is this input stream accepting data?
Input Stream index
true if accepting data
Experimental code, not currently being called
Not sure if it is necessary anyway
Number of input streams
Number of output streams
Media Object Size Info
Media Object Size Info
ToString
Minimum Buffer Size, in bytes
Max Lookahead
Alignment
MP_PARAMINFO
MP_TYPE
MPT_INT
MPT_FLOAT
MPT_BOOL
MPT_ENUM
MPT_MAX
MP_CURVE_TYPE
uuids.h, ksuuids.h
implements IMediaObject (DirectX Media Object)
implements IMFTransform (Media Foundation Transform)
On Windows XP, it is always an MM (if present at all)
Windows Media MP3 Decoder (as a DMO)
WORK IN PROGRESS - DO NOT USE!
Creates a new Resampler based on the DMO Resampler
Dispose code - experimental at the moment
Was added trying to track down why Resampler crashes NUnit
This code not currently being called by ResamplerDmoStream
Media Object
BiQuad filter
Passes a single sample through the filter
Input sample
Output sample
Set this up as a low pass filter
Sample Rate
Cut-off Frequency
Bandwidth
Set this up as a peaking EQ
Sample Rate
Centre Frequency
Bandwidth (Q)
Gain in decibels
Set this as a high pass filter
Create a low pass filter
Create a High pass filter
Create a bandpass filter with constant skirt gain
Create a bandpass filter with constant peak gain
Creates a notch filter
Creaes an all pass filter
Create a Peaking EQ
H(s) = A * (s^2 + (sqrt(A)/Q)*s + A)/(A*s^2 + (sqrt(A)/Q)*s + 1)
a "shelf slope" parameter (for shelving EQ only).
When S = 1, the shelf slope is as steep as it can be and remain monotonically
increasing or decreasing gain with frequency. The shelf slope, in dB/octave,
remains proportional to S for all other values for a fixed f0/Fs and dBgain.
Gain in decibels
H(s) = A * (A*s^2 + (sqrt(A)/Q)*s + 1)/(s^2 + (sqrt(A)/Q)*s + A)
Type to represent complex number
Real Part
Imaginary Part
Summary description for FastFourierTransform.
This computes an in-place complex-to-complex FFT
x and y are the real and imaginary arrays of 2^m points.
Applies a Hamming Window
Index into frame
Frame size (e.g. 1024)
Multiplier for Hamming window
Applies a Hann Window
Index into frame
Frame size (e.g. 1024)
Multiplier for Hann window
Applies a Blackman-Harris Window
Index into frame
Frame size (e.g. 1024)
Multiplier for Blackmann-Harris window
Summary description for ImpulseResponseConvolution.
A very simple mono convolution algorithm
This will be very slow
This is actually a downwards normalize for data that will clip
Represents an entry in a Cakewalk drum map
Describes this drum map entry
User customisable note name
Input MIDI note number
Output MIDI note number
Output port
Output MIDI Channel
Velocity adjustment
Velocity scaling - in percent
Represents a Cakewalk Drum Map file (.map)
Parses a Cakewalk Drum Map file
Path of the .map file
Describes this drum map
The drum mappings in this drum map
Channel Mode
Stereo
Joint Stereo
Dual Channel
Mono
MP3 Frame decompressor using the Windows Media MP3 Decoder DMO object
Interface for MP3 frame by frame decoder
Decompress a single MP3 frame
Frame to decompress
Output buffer
Offset within output buffer
Bytes written to output buffer
Tell the decoder that we have repositioned
PCM format that we are converting into
Initializes a new instance of the DMO MP3 Frame decompressor
Decompress a single frame of MP3
Alerts us that a reposition has occured so the MP3 decoder needs to reset its state
Dispose of this obejct and clean up resources
Converted PCM WaveFormat
An ID3v2 Tag
Reads an ID3v2 tag from a stream
Creates a new ID3v2 tag from a collection of key-value pairs.
A collection of key-value pairs containing the tags to include in the ID3v2 tag.
A new ID3v2 tag
Convert the frame size to a byte array.
The frame body size.
Creates an ID3v2 frame for the given key-value pair.
Gets the Id3v2 Header size. The size is encoded so that only 7 bits per byte are actually used.
Creates the Id3v2 tag header and returns is as a byte array.
The Id3v2 frames that will be included in the file. This is used to calculate the ID3v2 tag size.
Creates the Id3v2 tag for the given key-value pairs and returns it in the a stream.
Raw data from this tag
Represents an MP3 Frame
Reads an MP3 frame from a stream
input stream
A valid MP3 frame, or null if none found
Reads an MP3Frame from a stream
http://mpgedit.org/mpgedit/mpeg_format/mpeghdr.htm has some good info
also see http://www.codeproject.com/KB/audio-video/mpegaudioinfo.aspx
A valid MP3 frame, or null if none found
Constructs an MP3 frame
checks if the four bytes represent a valid header,
if they are, will parse the values into Mp3Frame
Sample rate of this frame
Frame length in bytes
Bit Rate
Raw frame data (includes header bytes)
MPEG Version
MPEG Layer
Channel Mode
The number of samples in this frame
The channel extension bits
The bitrate index (directly from the header)
Whether the Copyright bit is set
Whether a CRC is present
Not part of the MP3 frame itself - indicates where in the stream we found this header
MP3 Frame Decompressor using ACM
Creates a new ACM frame decompressor
The MP3 source format
Decompresses a frame
The MP3 frame
destination buffer
Offset within destination buffer
Bytes written into destination buffer
Resets the MP3 Frame Decompressor after a reposition operation
Disposes of this MP3 frame decompressor
Finalizer ensuring that resources get released properly
Output format (PCM)
MPEG Layer flags
Reserved
Layer 3
Layer 2
Layer 1
MPEG Version Flags
Version 2.5
Reserved
Version 2
Version 1
Represents a Xing VBR header
Load Xing Header
Frame
Xing Header
Sees if a frame contains a Xing header
Number of frames
Number of bytes
VBR Scale property
The MP3 frame
Soundfont generator
Gets the generator type
Generator amount as an unsigned short
Generator amount as a signed short
Low byte amount
High byte amount
Instrument
Sample Header
base class for structures that can read themselves
Generator types
Start address offset
End address offset
Start loop address offset
End loop address offset
Start address coarse offset
Modulation LFO to pitch
Vibrato LFO to pitch
Modulation envelope to pitch
Initial filter cutoff frequency
Initial filter Q
Modulation LFO to filter Cutoff frequency
Modulation envelope to filter cutoff frequency
End address coarse offset
Modulation LFO to volume
Unused
Chorus effects send
Reverb effects send
Pan
Unused
Unused
Unused
Delay modulation LFO
Frequency modulation LFO
Delay vibrato LFO
Frequency vibrato LFO
Delay modulation envelope
Attack modulation envelope
Hold modulation envelope
Decay modulation envelope
Sustain modulation envelop
Release modulation envelope
Key number to modulation envelope hold
Key number to modulation envelope decay
Delay volume envelope
Attack volume envelope
Hold volume envelope
Decay volume envelope
Sustain volume envelope
Release volume envelope
Key number to volume envelope hold
Key number to volume envelope decay
Instrument
Reserved
Key range
Velocity range
Start loop address coarse offset
Key number
Velocity
Initial attenuation
Reserved
End loop address coarse offset
Coarse tune
Fine tune
Sample ID
Sample modes
Reserved
Scale tuning
Exclusive class
Overriding root key
Unused
Unused
A soundfont info chunk
SoundFont Version
WaveTable sound engine
Bank name
Data ROM
Creation Date
Author
Target Product
Copyright
Comments
Tools
ROM Version
SoundFont instrument
instrument name
Zones
Instrument Builder
Transform Types
Linear
Modulator
Source Modulation data type
Destination generator type
Amount
Source Modulation Amount Type
Source Transform Type
Controller Sources
No Controller
Note On Velocity
Note On Key Number
Poly Pressure
Channel Pressure
Pitch Wheel
Pitch Wheel Sensitivity
Source Types
Linear
Concave
Convex
Switch
Modulator Type
A SoundFont Preset
Preset name
Patch Number
Bank number
Zones
Class to read the SoundFont file presets chunk
The Presets contained in this chunk
The instruments contained in this chunk
The sample headers contained in this chunk
just reads a chunk ID at the current position
chunk ID
reads a chunk at the current position
creates a new riffchunk from current position checking that we're not
at the end of this chunk first
the new chunk
useful for chunks that just contain a string
chunk as string
A SoundFont Sample Header
The sample name
Start offset
End offset
Start loop point
End loop point
Sample Rate
Original pitch
Pitch correction
Sample Link
SoundFont Sample Link Type
SoundFont sample modes
No loop
Loop Continuously
Reserved no loop
Loop and continue
Sample Link Type
Mono Sample
Right Sample
Left Sample
Linked Sample
ROM Mono Sample
ROM Right Sample
ROM Left Sample
ROM Linked Sample
SoundFont Version Structure
Major Version
Minor Version
Builds a SoundFont version
Reads a SoundFont Version structure
Writes a SoundFont Version structure
Gets the length of this structure
Represents a SoundFont
Loads a SoundFont from a file
Filename of the SoundFont
Loads a SoundFont from a stream
stream
The File Info Chunk
The Presets
The Instruments
The Sample Headers
The Sample Data
A SoundFont zone
Modulators for this Zone
Generators for this Zone
Summary description for Fader.
Required designer variable.
Creates a new Fader control
Clean up any resources being used.
Required method for Designer support - do not modify
the contents of this method with the code editor.
Minimum value of this fader
Maximum value of this fader
Current value of this fader
Fader orientation
Pan slider control
Required designer variable.
Creates a new PanSlider control
Clean up any resources being used.
Required method for Designer support - do not modify
the contents of this method with the code editor.
True when pan value changed
The current Pan setting
Control that represents a potentiometer
TODO list:
Optional Log scale
Optional reverse scale
Keyboard control
Optional bitmap mode
Optional complete draw mode
Tooltip support
Creates a new pot control
Draws the control
Handles the mouse down event to allow changing value by dragging
Handles the mouse up event to allow changing value by dragging
Handles the mouse down event to allow changing value by dragging
Required designer variable.
Clean up any resources being used.
true if managed resources should be disposed; otherwise, false.
Required method for Designer support - do not modify
the contents of this method with the code editor.
Value changed event
Minimum Value of the Pot
Maximum Value of the Pot
The current value of the pot
Implements a rudimentary volume meter
Basic volume meter
On Fore Color Changed
Paints the volume meter
Required designer variable.
Clean up any resources being used.
true if managed resources should be disposed; otherwise, false.
Required method for Designer support - do not modify
the contents of this method with the code editor.
Current Value
Minimum decibels
Maximum decibels
Meter orientation
VolumeSlider control
Required designer variable.
Creates a new VolumeSlider control
Clean up any resources being used.
Required method for Designer support - do not modify
the contents of this method with the code editor.
Volume changed event
The volume for this control
Windows Forms control for painting audio waveforms
Constructs a new instance of the WaveFormPainter class
On Resize
On ForeColor Changed
Add Max Value
On Paint
Required designer variable.
Clean up any resources being used.
true if managed resources should be disposed; otherwise, false.
Required method for Designer support - do not modify
the contents of this method with the code editor.
Control for viewing waveforms
Required designer variable.
Creates a new WaveViewer control
Clean up any resources being used.
Required method for Designer support - do not modify
the contents of this method with the code editor.
sets the associated wavestream
The zoom level, in samples per pixel
Start position (currently in bytes)
Represents a MIDI Channel AfterTouch Event.
Represents an individual MIDI event
The MIDI command code
Creates a MidiEvent from a raw message received using
the MME MIDI In APIs
The short MIDI message
A new MIDI Event
Constructs a MidiEvent from a BinaryStream
The binary stream of MIDI data
The previous MIDI event (pass null for first event)
A new MidiEvent
Converts this MIDI event to a short message (32 bit integer) that
can be sent by the Windows MIDI out short message APIs
Cannot be implemented for all MIDI messages
A short message
Default constructor
Creates a MIDI event with specified parameters
Absolute time of this event
MIDI channel number
MIDI command code
Whether this is a note off event
Whether this is a note on event
Determines if this is an end track event
Displays a summary of the MIDI event
A string containing a brief description of this MIDI event
Utility function that can read a variable length integer from a binary stream
The binary stream
The integer read
Writes a variable length integer to a binary stream
Binary stream
The value to write
Exports this MIDI event's data
Overriden in derived classes, but they should call this version
Absolute time used to calculate delta.
Is updated ready for the next delta calculation
Stream to write to
The MIDI Channel Number for this event (1-16)
The Delta time for this event
The absolute time for this event
The command code for this event
Creates a new ChannelAfterTouchEvent from raw MIDI data
A binary reader
Creates a new Channel After-Touch Event
Absolute time
Channel
After-touch pressure
Calls base class export first, then exports the data
specific to this event
MidiEvent.Export
The aftertouch pressure value
Represents a MIDI control change event
Reads a control change event from a MIDI stream
Binary reader on the MIDI stream
Creates a control change event
Time
MIDI Channel Number
The MIDI Controller
Controller value
Describes this control change event
A string describing this event
Calls base class export first, then exports the data
specific to this event
MidiEvent.Export
The controller number
The controller value
Represents a MIDI key signature event event
Represents a MIDI meta event
Empty constructor
Custom constructor for use by derived types, who will manage the data themselves
Meta event type
Meta data length
Absolute time
Reads a meta-event from a stream
A binary reader based on the stream of MIDI data
A new MetaEvent object
Describes this Meta event
String describing the metaevent
Gets the type of this meta event
Reads a new track sequence number event from a MIDI stream
The MIDI stream
the data length
Creates a new Key signature event with the specified data
Describes this event
String describing the event
Calls base class export first, then exports the data
specific to this event
MidiEvent.Export
Number of sharps or flats
Major or Minor key
MIDI MetaEvent Type
Track sequence number
Text event
Copyright
Sequence track name
Track instrument name
Lyric
Marker
Cue point
Program (patch) name
Device (port) name
MIDI Channel (not official?)
MIDI Port (not official?)
End track
Set tempo
SMPTE offset
Time signature
Key signature
Sequencer specific
MIDI command codes
Note Off
Note On
Key After-touch
Control change
Patch change
Channel after-touch
Pitch wheel change
Sysex message
Eox (comes at end of a sysex message)
Timing clock (used when synchronization is required)
Start sequence
Continue sequence
Stop sequence
Auto-Sensing
Meta-event
MidiController enumeration
http://www.midi.org/techspecs/midimessages.php#3
Bank Select (MSB)
Modulation (MSB)
Breath Controller
Foot controller (MSB)
Main volume
Pan
Expression
Bank Select LSB
Sustain
Portamento On/Off
Sostenuto On/Off
Soft Pedal On/Off
Legato Footswitch
Reset all controllers
All notes off
A helper class to manage collection of MIDI events
It has the ability to organise them in tracks
Creates a new Midi Event collection
Initial file type
Delta Ticks Per Quarter Note
Gets events on a specified track
Track number
The list of events
Adds a new track
The new track event list
Adds a new track
Initial events to add to the new track
The new track event list
Removes a track
Track number to remove
Clears all events
Adds an event to the appropriate track depending on file type
The event to be added
The original (or desired) track number
When adding events in type 0 mode, the originalTrack parameter
is ignored. If in type 1 mode, it will use the original track number to
store the new events. If the original track was 0 and this is a channel based
event, it will create new tracks if necessary and put it on the track corresponding
to its channel number
Sorts, removes empty tracks and adds end track markers
Gets an enumerator for the lists of track events
Gets an enumerator for the lists of track events
The number of tracks
The absolute time that should be considered as time zero
Not directly used here, but useful for timeshifting applications
The number of ticks per quarter note
Gets events on a specific track
Track number
The list of events
The MIDI file type
Utility class for comparing MidiEvent objects
Compares two MidiEvents
Sorts by time, with EndTrack always sorted to the end
Class able to read a MIDI file
Opens a MIDI file for reading
Name of MIDI file
Opens a MIDI file for reading
Name of MIDI file
If true will error on non-paired note events
Describes the MIDI file
A string describing the MIDI file and its events
Exports a MIDI file
Filename to export to
Events to export
MIDI File format
The collection of events in this MIDI file
Number of tracks in this MIDI file
Delta Ticks Per Quarter Note
Represents a MIDI in device
Opens a specified MIDI in device
The device number
Closes this MIDI in device
Closes this MIDI in device
Start the MIDI in device
Stop the MIDI in device
Reset the MIDI in device
Gets the MIDI in device info
Closes the MIDI out device
True if called from Dispose
Cleanup
Called when a MIDI message is received
An invalid MIDI message
Gets the number of MIDI input devices available in the system
MIDI In Device Capabilities
wMid
wPid
vDriverVersion
Product Name
Support - Reserved
Gets the manufacturer of this device
Gets the product identifier (manufacturer specific)
Gets the product name
MIM_OPEN
MIM_CLOSE
MIM_DATA
MIM_LONGDATA
MIM_ERROR
MIM_LONGERROR
MIM_MOREDATA
MOM_OPEN
MOM_CLOSE
MOM_DONE
Represents a MIDI message
Creates a new MIDI message
Status
Data parameter 1
Data parameter 2
Creates a new MIDI message from a raw message
A packed MIDI message from an MMIO function
Creates a Note On message
Note number
Volume
MIDI channel
A new MidiMessage object
Creates a Note Off message
Note number
Volume
MIDI channel (1-16)
A new MidiMessage object
Creates a patch change message
The patch number
The MIDI channel number (1-16)
A new MidiMessageObject
Creates a Control Change message
The controller number to change
The value to set the controller to
The MIDI channel number (1-16)
A new MidiMessageObject
Returns the raw MIDI message data
Represents a MIDI out device
Gets the MIDI Out device info
Opens a specified MIDI out device
The device number
Closes this MIDI out device
Closes this MIDI out device
Resets the MIDI out device
Sends a MIDI out message
Message
Parameter 1
Parameter 2
Sends a MIDI message to the MIDI out device
The message to send
Closes the MIDI out device
True if called from Dispose
Send a long message, for example sysex.
The bytes to send.
Cleanup
Gets the number of MIDI devices available in the system
Gets or sets the volume for this MIDI out device
class representing the capabilities of a MIDI out device
MIDIOUTCAPS: http://msdn.microsoft.com/en-us/library/dd798467%28VS.85%29.aspx
Queries whether a particular channel is supported
Channel number to test
True if the channel is supported
Gets the manufacturer of this device
Gets the product identifier (manufacturer specific)
Gets the product name
Returns the number of supported voices
Gets the polyphony of the device
Returns true if the device supports all channels
Returns true if the device supports patch caching
Returns true if the device supports separate left and right volume
Returns true if the device supports MIDI stream out
Returns true if the device supports volume control
Returns the type of technology used by this MIDI out device
MIDICAPS_VOLUME
separate left-right volume control
MIDICAPS_LRVOLUME
MIDICAPS_CACHE
MIDICAPS_STREAM
driver supports midiStreamOut directly
Represents the different types of technology used by a MIDI out device
from mmsystem.h
The device is a MIDI port
The device is a MIDI synth
The device is a square wave synth
The device is an FM synth
The device is a MIDI mapper
The device is a WaveTable synth
The device is a software synth
Represents a note MIDI event
Reads a NoteEvent from a stream of MIDI data
Binary Reader for the stream
Creates a MIDI Note Event with specified parameters
Absolute time of this event
MIDI channel number
MIDI command code
MIDI Note Number
MIDI Note Velocity
Describes the Note Event
Note event as a string
The MIDI note number
The note velocity
The note name
Represents a MIDI note on event
Reads a new Note On event from a stream of MIDI data
Binary reader on the MIDI data stream
Creates a NoteOn event with specified parameters
Absolute time of this event
MIDI channel number
MIDI note number
MIDI note velocity
MIDI note duration
Calls base class export first, then exports the data
specific to this event
MidiEvent.Export
The associated Note off event
Get or set the Note Number, updating the off event at the same time
Get or set the channel, updating the off event at the same time
The duration of this note
There must be a note off event
Represents a MIDI patch change event
Gets the default MIDI instrument names
Reads a new patch change event from a MIDI stream
Binary reader for the MIDI stream
Creates a new patch change event
Time of the event
Channel number
Patch number
Describes this patch change event
String describing the patch change event
Gets as a short message for sending with the midiOutShortMsg API
short message
Calls base class export first, then exports the data
specific to this event
MidiEvent.Export
The Patch Number
Represents a MIDI pitch wheel change event
Reads a pitch wheel change event from a MIDI stream
The MIDI stream to read from
Creates a new pitch wheel change event
Absolute event time
Channel
Pitch wheel value
Describes this pitch wheel change event
String describing this pitch wheel change event
Gets a short message
Integer to sent as short message
Calls base class export first, then exports the data
specific to this event
MidiEvent.Export
Pitch Wheel Value 0 is minimum, 0x2000 (8192) is default, 0x4000 (16384) is maximum
Represents a Sequencer Specific event
Reads a new sequencer specific event from a MIDI stream
The MIDI stream
The data length
Creates a new Sequencer Specific event
The sequencer specific data
Absolute time of this event
Describes this MIDI text event
A string describing this event
Calls base class export first, then exports the data
specific to this event
MidiEvent.Export
The contents of this sequencer specific
Reads a new time signature event from a MIDI stream
The MIDI stream
The data length
Describes this time signature event
A string describing this event
Calls base class export first, then exports the data
specific to this event
MidiEvent.Export
Hours
Minutes
Seconds
Frames
SubFrames
Represents a MIDI sysex message
Reads a sysex message from a MIDI stream
Stream of MIDI data
a new sysex message
Describes this sysex message
A string describing the sysex message
Calls base class export first, then exports the data
specific to this event
MidiEvent.Export
Represents a MIDI tempo event
Reads a new tempo event from a MIDI stream
The MIDI stream
the data length
Creates a new tempo event with specified settings
Microseconds per quarter note
Absolute time
Describes this tempo event
String describing the tempo event
Calls base class export first, then exports the data
specific to this event
MidiEvent.Export
Microseconds per quarter note
Tempo
Represents a MIDI text event
Reads a new text event from a MIDI stream
The MIDI stream
The data length
Creates a new TextEvent
The text in this type
MetaEvent type (must be one that is
associated with text data)
Absolute time of this event
Describes this MIDI text event
A string describing this event
Calls base class export first, then exports the data
specific to this event
MidiEvent.Export
The contents of this text event
Represents a MIDI time signature event
Reads a new time signature event from a MIDI stream
The MIDI stream
The data length
Creates a new TimeSignatureEvent
Time at which to create this event
Numerator
Denominator
Ticks in Metronome Click
No of 32nd Notes in Quarter Click
Creates a new time signature event with the specified parameters
Describes this time signature event
A string describing this event
Calls base class export first, then exports the data
specific to this event
MidiEvent.Export
Numerator (number of beats in a bar)
Denominator (Beat unit),
1 means 2, 2 means 4 (crochet), 3 means 8 (quaver), 4 means 16 and 5 means 32
Ticks in a metronome click
Number of 32nd notes in a quarter note
The time signature
Represents a MIDI track sequence number event event
Reads a new track sequence number event from a MIDI stream
The MIDI stream
the data length
Describes this event
String describing the event
Calls base class export first, then exports the data
specific to this event
MidiEvent.Export
Boolean mixer control
Represents a mixer control
Mixer Handle
Number of Channels
Mixer Handle Type
Gets all the mixer controls
Mixer Handle
Mixer Line
Mixer Handle Type
Gets a specified Mixer Control
Mixer Handle
Line ID
Control ID
Number of Channels
Flags to use (indicates the meaning of mixerHandle)
Gets the control details
Gets the control details
Returns true if this is a boolean control
Control type
Determines whether a specified mixer control type is a list text control
String representation for debug purposes
Mixer control name
Mixer control type
Is this a boolean control
True if this is a list text control
True if this is a signed control
True if this is an unsigned control
True if this is a custom control
Gets the details for this control
memory pointer
The current value of the control
Custom Mixer control
Get the data for this custom control
pointer to memory to receive data
List text mixer control
Get the details for this control
Memory location to read to
Represents a Windows mixer device
Connects to the specified mixer
The index of the mixer to use.
This should be between zero and NumberOfDevices - 1
Retrieve the specified MixerDestination object
The ID of the destination to use.
Should be between 0 and DestinationCount - 1
The number of mixer devices available
The number of destinations this mixer supports
The name of this mixer device
The manufacturer code for this mixer device
The product identifier code for this mixer device
A way to enumerate the destinations
A way to enumerate all available devices
Mixer control types
Custom
Boolean meter
Signed meter
Peak meter
Unsigned meter
Boolean
On Off
Mute
Mono
Loudness
Stereo Enhance
Button
Decibels
Signed
Unsigned
Percent
Slider
Pan
Q-sound pan
Fader
Volume
Bass
Treble
Equaliser
Single Select
Mux
Multiple select
Mixer
Micro time
Milli time
Represents a mixer line (source or destination)
Creates a new mixer destination
Mixer Handle
Destination Index
Mixer Handle Type
Creates a new Mixer Source For a Specified Source
Mixer Handle
Destination Index
Source Index
Flag indicating the meaning of mixerHandle
Creates a new Mixer Source
Wave In Device
Gets the specified source
Describes this Mixer Line (for diagnostic purposes)
Mixer Line Name
Mixer Line short name
The line ID
Component Type
Mixer destination type description
Number of channels
Number of sources
Number of controls
Is this destination active
Is this destination disconnected
Is this destination a source
Enumerator for the controls on this Mixer Limne
Enumerator for the sources on this Mixer Line
The name of the target output device
Mixer Interop Flags
MIXER_OBJECTF_HANDLE = 0x80000000;
MIXER_OBJECTF_MIXER = 0x00000000;
MIXER_OBJECTF_HMIXER
MIXER_OBJECTF_WAVEOUT
MIXER_OBJECTF_HWAVEOUT
MIXER_OBJECTF_WAVEIN
MIXER_OBJECTF_HWAVEIN
MIXER_OBJECTF_MIDIOUT
MIXER_OBJECTF_HMIDIOUT
MIXER_OBJECTF_MIDIIN
MIXER_OBJECTF_HMIDIIN
MIXER_OBJECTF_AUX
MIXER_GETCONTROLDETAILSF_VALUE = 0x00000000;
MIXER_SETCONTROLDETAILSF_VALUE = 0x00000000;
MIXER_GETCONTROLDETAILSF_LISTTEXT = 0x00000001;
MIXER_SETCONTROLDETAILSF_LISTTEXT = 0x00000001;
MIXER_GETCONTROLDETAILSF_QUERYMASK = 0x0000000F;
MIXER_SETCONTROLDETAILSF_QUERYMASK = 0x0000000F;
MIXER_GETLINECONTROLSF_QUERYMASK = 0x0000000F;
MIXER_GETLINECONTROLSF_ALL = 0x00000000;
MIXER_GETLINECONTROLSF_ONEBYID = 0x00000001;
MIXER_GETLINECONTROLSF_ONEBYTYPE = 0x00000002;
MIXER_GETLINEINFOF_DESTINATION = 0x00000000;
MIXER_GETLINEINFOF_SOURCE = 0x00000001;
MIXER_GETLINEINFOF_LINEID = 0x00000002;
MIXER_GETLINEINFOF_COMPONENTTYPE = 0x00000003;
MIXER_GETLINEINFOF_TARGETTYPE = 0x00000004;
MIXER_GETLINEINFOF_QUERYMASK = 0x0000000F;
Mixer Line Flags
Audio line is active. An active line indicates that a signal is probably passing
through the line.
Audio line is disconnected. A disconnected line's associated controls can still be
modified, but the changes have no effect until the line is connected.
Audio line is an audio source line associated with a single audio destination line.
If this flag is not set, this line is an audio destination line associated with zero
or more audio source lines.
BOUNDS structure
dwMinimum / lMinimum / reserved 0
dwMaximum / lMaximum / reserved 1
reserved 2
reserved 3
reserved 4
reserved 5
METRICS structure
cSteps / reserved[0]
cbCustomData / reserved[1], number of bytes for control details
reserved 2
reserved 3
reserved 4
reserved 5
MIXERCONTROL struct
http://msdn.microsoft.com/en-us/library/dd757293%28VS.85%29.aspx
Mixer Line Component type enumeration
Audio line is a destination that cannot be defined by one of the standard component types. A mixer device is required to use this component type for line component types that have not been defined by Microsoft Corporation.
MIXERLINE_COMPONENTTYPE_DST_UNDEFINED
Audio line is a digital destination (for example, digital input to a DAT or CD audio device).
MIXERLINE_COMPONENTTYPE_DST_DIGITAL
Audio line is a line level destination (for example, line level input from a CD audio device) that will be the final recording source for the analog-to-digital converter (ADC). Because most audio cards for personal computers provide some sort of gain for the recording audio source line, the mixer device will use the MIXERLINE_COMPONENTTYPE_DST_WAVEIN type.
MIXERLINE_COMPONENTTYPE_DST_LINE
Audio line is a destination used for a monitor.
MIXERLINE_COMPONENTTYPE_DST_MONITOR
Audio line is an adjustable (gain and/or attenuation) destination intended to drive speakers. This is the typical component type for the audio output of audio cards for personal computers.
MIXERLINE_COMPONENTTYPE_DST_SPEAKERS
Audio line is an adjustable (gain and/or attenuation) destination intended to drive headphones. Most audio cards use the same audio destination line for speakers and headphones, in which case the mixer device simply uses the MIXERLINE_COMPONENTTYPE_DST_SPEAKERS type.
MIXERLINE_COMPONENTTYPE_DST_HEADPHONES
Audio line is a destination that will be routed to a telephone line.
MIXERLINE_COMPONENTTYPE_DST_TELEPHONE
Audio line is a destination that will be the final recording source for the waveform-audio input (ADC). This line typically provides some sort of gain or attenuation. This is the typical component type for the recording line of most audio cards for personal computers.
MIXERLINE_COMPONENTTYPE_DST_WAVEIN
Audio line is a destination that will be the final recording source for voice input. This component type is exactly like MIXERLINE_COMPONENTTYPE_DST_WAVEIN but is intended specifically for settings used during voice recording/recognition. Support for this line is optional for a mixer device. Many mixer devices provide only MIXERLINE_COMPONENTTYPE_DST_WAVEIN.
MIXERLINE_COMPONENTTYPE_DST_VOICEIN
Audio line is a source that cannot be defined by one of the standard component types. A mixer device is required to use this component type for line component types that have not been defined by Microsoft Corporation.
MIXERLINE_COMPONENTTYPE_SRC_UNDEFINED
Audio line is a digital source (for example, digital output from a DAT or audio CD).
MIXERLINE_COMPONENTTYPE_SRC_DIGITAL
Audio line is a line-level source (for example, line-level input from an external stereo) that can be used as an optional recording source. Because most audio cards for personal computers provide some sort of gain for the recording source line, the mixer device will use the MIXERLINE_COMPONENTTYPE_SRC_AUXILIARY type.
MIXERLINE_COMPONENTTYPE_SRC_LINE
Audio line is a microphone recording source. Most audio cards for personal computers provide at least two types of recording sources: an auxiliary audio line and microphone input. A microphone audio line typically provides some sort of gain. Audio cards that use a single input for use with a microphone or auxiliary audio line should use the MIXERLINE_COMPONENTTYPE_SRC_MICROPHONE component type.
MIXERLINE_COMPONENTTYPE_SRC_MICROPHONE
Audio line is a source originating from the output of an internal synthesizer. Most audio cards for personal computers provide some sort of MIDI synthesizer (for example, an Adlib®-compatible or OPL/3 FM synthesizer).
MIXERLINE_COMPONENTTYPE_SRC_SYNTHESIZER
Audio line is a source originating from the output of an internal audio CD. This component type is provided for audio cards that provide an audio source line intended to be connected to an audio CD (or CD-ROM playing an audio CD).
MIXERLINE_COMPONENTTYPE_SRC_COMPACTDISC
Audio line is a source originating from an incoming telephone line.
MIXERLINE_COMPONENTTYPE_SRC_TELEPHONE
Audio line is a source originating from personal computer speaker. Several audio cards for personal computers provide the ability to mix what would typically be played on the internal speaker with the output of an audio card. Some audio cards support the ability to use this output as a recording source.
MIXERLINE_COMPONENTTYPE_SRC_PCSPEAKER
Audio line is a source originating from the waveform-audio output digital-to-analog converter (DAC). Most audio cards for personal computers provide this component type as a source to the MIXERLINE_COMPONENTTYPE_DST_SPEAKERS destination. Some cards also allow this source to be routed to the MIXERLINE_COMPONENTTYPE_DST_WAVEIN destination.
MIXERLINE_COMPONENTTYPE_SRC_WAVEOUT
Audio line is a source originating from the auxiliary audio line. This line type is intended as a source with gain or attenuation that can be routed to the MIXERLINE_COMPONENTTYPE_DST_SPEAKERS destination and/or recorded from the MIXERLINE_COMPONENTTYPE_DST_WAVEIN destination.
MIXERLINE_COMPONENTTYPE_SRC_AUXILIARY
Audio line is an analog source (for example, analog output from a video-cassette tape).
MIXERLINE_COMPONENTTYPE_SRC_ANALOG
Represents a signed mixer control
Gets details for this contrl
String Representation for debugging purposes
The value of the control
Minimum value for this control
Maximum value for this control
Value of the control represented as a percentage
Represents an unsigned mixer control
Gets the details for this control
String Representation for debugging purposes
The control value
The control's minimum value
The control's maximum value
Value of the control represented as a percentage
Helper methods for working with audio buffers
Ensures the buffer is big enough
Ensures the buffer is big enough
An encoding for use with file types that have one byte per character
The one and only instance of this class
A very basic circular buffer implementation
Create a new circular buffer
Max buffer size in bytes
Write data to the buffer
Data to write
Offset into data
Number of bytes to write
number of bytes written
Read from the buffer
Buffer to read into
Offset into read buffer
Bytes to read
Number of bytes actually read
Resets the buffer
Advances the buffer, discarding bytes
Bytes to advance
Maximum length of this circular buffer
Number of bytes currently stored in the circular buffer
A util class for conversions
linear to dB conversion
linear value
decibel value
dB to linear conversion
decibel value
linear value
HResult
S_OK
S_FALSE
E_INVALIDARG (from winerror.h)
MAKE_HRESULT macro
Helper to deal with the fact that in Win Store apps,
the HResult property name has changed
COM Exception
The HResult
Pass-through stream that ignores Dispose
Useful for dealing with MemoryStreams that you want to re-use
Creates a new IgnoreDisposeStream
The source stream
Flushes the underlying stream
Reads from the underlying stream
Seeks on the underlying stream
Sets the length of the underlying stream
Writes to the underlying stream
Dispose - by default (IgnoreDispose = true) will do nothing,
leaving the underlying stream undisposed
The source stream all other methods fall through to
If true the Dispose will be ignored, if false, will pass through to the SourceStream
Set to true by default
Can Read
Can Seek
Can write to the underlying stream
Gets the length of the underlying stream
Gets or sets the position of the underlying stream
In-place and stable implementation of MergeSort
MergeSort a list of comparable items
MergeSort a list
A thread-safe Progress Log Control
Creates a new progress log control
Log a message
Clear the log
Required designer variable.
Clean up any resources being used.
true if managed resources should be disposed; otherwise, false.
Required method for Designer support - do not modify
the contents of this method with the code editor.
The contents of the log as text
Audio Endpoint Volume
Volume Step Up
Volume Step Down
Creates a new Audio endpoint volume
IAudioEndpointVolume COM interface
Dispose
Finalizer
On Volume Notification
Volume Range
Hardware Support
Step Information
Channels
Master Volume Level
Master Volume Level Scalar
Mute
Audio Meter Information
Peak Values
Hardware Support
Master Peak Value
Device State
DEVICE_STATE_ACTIVE
DEVICE_STATE_DISABLED
DEVICE_STATE_NOTPRESENT
DEVICE_STATE_UNPLUGGED
DEVICE_STATEMASK_ALL
Endpoint Hardware Support
Volume
Mute
Meter
is defined in WTypes.h
The EDataFlow enumeration defines constants that indicate the direction
in which audio data flows between an audio endpoint device and an application
Audio rendering stream.
Audio data flows from the application to the audio endpoint device, which renders the stream.
Audio capture stream. Audio data flows from the audio endpoint device that captures the stream,
to the application
Audio rendering or capture stream. Audio data can flow either from the application to the audio
endpoint device, or from the audio endpoint device to the application.
Windows CoreAudio IAudioClient interface
Defined in AudioClient.h
The GetBufferSize method retrieves the size (maximum capacity) of the endpoint buffer.
The GetService method accesses additional services from the audio client object.
The interface ID for the requested service.
Pointer to a pointer variable into which the method writes the address of an instance of the requested interface.
defined in MMDeviceAPI.h
IMMNotificationClient
Device State Changed
Device Added
Device Removed
Default Device Changed
Property Value Changed
is defined in propsys.h
implements IMMDeviceEnumerator
MMDevice STGM enumeration
PROPERTYKEY is defined in wtypes.h
Format ID
Property ID
from Propidl.h.
http://msdn.microsoft.com/en-us/library/aa380072(VS.85).aspx
contains a union so we have to do an explicit layout
Creates a new PropVariant containing a long value
Helper method to gets blob data
Interprets a blob as an array of structs
allows freeing up memory, might turn this into a Dispose method?
Gets the type of data in this PropVariant
Property value
The ERole enumeration defines constants that indicate the role
that the system has assigned to an audio endpoint device
Games, system notification sounds, and voice commands.
Music, movies, narration, and live music recording
Voice communications (talking to another person).
MM Device
To string
Audio Client
Audio Meter Information
Audio Endpoint Volume
AudioSessionManager instance
Properties
Friendly name for the endpoint
Friendly name of device
Icon path of device
Device ID
Data Flow
Device State
MM Device Enumerator
Creates a new MM Device Enumerator
Enumerate Audio Endpoints
Desired DataFlow
State Mask
Device Collection
Get Default Endpoint
Data Flow
Role
Device
Check to see if a default audio end point exists without needing an exception.
Data Flow
Role
True if one exists, and false if one does not exist.
Get device by ID
Device ID
Device
Registers a call back for Device Events
Object implementing IMMNotificationClient type casted as IMMNotificationClient interface
Unregisters a call back for Device Events
Object implementing IMMNotificationClient type casted as IMMNotificationClient interface
Property Store class, only supports reading properties at the moment.
Contains property guid
Looks for a specific key
True if found
Gets property key at sepecified index
Index
Property key
Gets property value at specified index
Index
Property value
Creates a new property store
IPropertyStore COM interface
Property Count
Gets property by index
Property index
The property
Indexer by guid
Property Key
Property or null if not found
Property Store Property
Property Key
Property Value
Main ASIODriver Class. To use this class, you need to query first the GetASIODriverNames() and
then use the GetASIODriverByName to instantiate the correct ASIODriver.
This is the first ASIODriver binding fully implemented in C#!
Contributor: Alexandre Mutel - email: alexandre_mutel at yahoo.fr
Gets the ASIO driver names installed.
a list of driver names. Use this name to GetASIODriverByName
Instantiate a ASIODriver given its name.
The name of the driver
an ASIODriver instance
Instantiate the ASIO driver by GUID.
The GUID.
an ASIODriver instance
Inits the ASIODriver..
The sys handle.
Gets the name of the driver.
Gets the driver version.
Gets the error message.
Starts this instance.
Stops this instance.
Gets the channels.
The num input channels.
The num output channels.
Gets the latencies (n.b. does not throw an exception)
The input latency.
The output latency.
Gets the size of the buffer.
Size of the min.
Size of the max.
Size of the preferred.
The granularity.
Determines whether this instance can use the specified sample rate.
The sample rate.
true if this instance [can sample rate] the specified sample rate; otherwise, false.
Gets the sample rate.
Sets the sample rate.
The sample rate.
Gets the clock sources.
The clocks.
The num sources.
Sets the clock source.
The reference.
Gets the sample position.
The sample pos.
The time stamp.
Gets the channel info.
The channel number.
if set to true [true for input info].
Creates the buffers.
The buffer infos.
The num channels.
Size of the buffer.
The callbacks.
Disposes the buffers.
Controls the panel.
Futures the specified selector.
The selector.
The opt.
Notifies OutputReady to the ASIODriver.
Releases this instance.
Handles the exception. Throws an exception based on the error.
The error to check.
Method name
Inits the vTable method from GUID. This is a tricky part of this class.
The ASIO GUID.
Internal VTable structure to store all the delegates to the C++ COM method.
Callback used by the ASIODriverExt to get wave data
ASIODriverExt is a simplified version of the ASIODriver. It provides an easier
way to access the capabilities of the Driver and implement the callbacks necessary
for feeding the driver.
Implementation inspired from Rob Philpot's with a managed C++ ASIO wrapper BlueWave.Interop.Asio
http://www.codeproject.com/KB/mcpp/Asio.Net.aspx
Contributor: Alexandre Mutel - email: alexandre_mutel at yahoo.fr
Initializes a new instance of the class based on an already
instantiated ASIODriver instance.
A ASIODriver already instantiated.
Allows adjustment of which is the first output channel we write to
Output Channel offset
Input Channel offset
Starts playing the buffers.
Stops playing the buffers.
Shows the control panel.
Releases this instance.
Determines whether the specified sample rate is supported.
The sample rate.
true if [is sample rate supported]; otherwise, false.
Sets the sample rate.
The sample rate.
Creates the buffers for playing.
The number of outputs channels.
The number of input channel.
if set to true [use max buffer size] else use Prefered size
Builds the capabilities internally.
Callback called by the ASIODriver on fill buffer demand. Redirect call to external callback.
Index of the double buffer.
if set to true [direct process].
Callback called by the ASIODriver on event "Samples rate changed".
The sample rate.
Asio message call back.
The selector.
The value.
The message.
The opt.
Buffers switch time info call back.
The asio time param.
Index of the double buffer.
if set to true [direct process].
Gets the driver used.
The ASIOdriver.
Gets or sets the fill buffer callback.
The fill buffer callback.
Gets the capabilities of the ASIODriver.
The capabilities.
This class stores convertors for different interleaved WaveFormat to ASIOSampleType separate channel
format.
Selects the sample convertor based on the input WaveFormat and the output ASIOSampleTtype.
The wave format.
The type.
Optimized convertor for 2 channels SHORT
Generic convertor for SHORT
Optimized convertor for 2 channels FLOAT
Generic convertor SHORT
Optimized convertor for 2 channels SHORT
Generic convertor for SHORT
Optimized convertor for 2 channels FLOAT
Generic convertor SHORT
Generic converter 24 LSB
Generic convertor for float
ASIO common Exception.
Gets the name of the error.
The error.
the name of the error
Represents an installed ACM Driver
Helper function to determine whether a particular codec is installed
The short name of the function
Whether the codec is installed
Attempts to add a new ACM driver from a file
Full path of the .acm or dll file containing the driver
Handle to the driver
Removes a driver previously added using AddLocalDriver
Local driver to remove
Show Format Choose Dialog
Owner window handle, can be null
Window title
Enumeration flags. None to get everything
Enumeration format. Only needed with certain enumeration flags
The selected format
Textual description of the selected format
Textual description of the selected format tag
True if a format was selected
Finds a Driver by its short name
Short Name
The driver, or null if not found
Gets a list of the ACM Drivers installed
The callback for acmDriverEnum
Creates a new ACM Driver object
Driver handle
ToString
Gets all the supported formats for a given format tag
Format tag
Supported formats
Opens this driver
Closes this driver
Dispose
Gets the maximum size needed to store a WaveFormat for ACM interop functions
The short name of this driver
The full name of this driver
The driver ID
The list of FormatTags for this ACM Driver
Interop structure for ACM driver details (ACMDRIVERDETAILS)
http://msdn.microsoft.com/en-us/library/dd742889%28VS.85%29.aspx
ACMDRIVERDETAILS_SHORTNAME_CHARS
ACMDRIVERDETAILS_LONGNAME_CHARS
ACMDRIVERDETAILS_COPYRIGHT_CHARS
ACMDRIVERDETAILS_LICENSING_CHARS
ACMDRIVERDETAILS_FEATURES_CHARS
DWORD cbStruct
FOURCC fccType
FOURCC fccComp
WORD wMid;
WORD wPid
DWORD vdwACM
DWORD vdwDriver
DWORD fdwSupport;
DWORD cFormatTags
DWORD cFilterTags
HICON hicon
TCHAR szShortName[ACMDRIVERDETAILS_SHORTNAME_CHARS];
TCHAR szLongName[ACMDRIVERDETAILS_LONGNAME_CHARS];
TCHAR szCopyright[ACMDRIVERDETAILS_COPYRIGHT_CHARS];
TCHAR szLicensing[ACMDRIVERDETAILS_LICENSING_CHARS];
TCHAR szFeatures[ACMDRIVERDETAILS_FEATURES_CHARS];
Flags indicating what support a particular ACM driver has
ACMDRIVERDETAILS_SUPPORTF_CODEC - Codec
ACMDRIVERDETAILS_SUPPORTF_CONVERTER - Converter
ACMDRIVERDETAILS_SUPPORTF_FILTER - Filter
ACMDRIVERDETAILS_SUPPORTF_HARDWARE - Hardware
ACMDRIVERDETAILS_SUPPORTF_ASYNC - Async
ACMDRIVERDETAILS_SUPPORTF_LOCAL - Local
ACMDRIVERDETAILS_SUPPORTF_DISABLED - Disabled
ACM_DRIVERENUMF_NOLOCAL, Only global drivers should be included in the enumeration
ACM_DRIVERENUMF_DISABLED, Disabled ACM drivers should be included in the enumeration
ACM Format
Format Index
Format Tag
Support Flags
WaveFormat
WaveFormat Size
Format Description
ACMFORMATCHOOSE
http://msdn.microsoft.com/en-us/library/dd742911%28VS.85%29.aspx
DWORD cbStruct;
DWORD fdwStyle;
HWND hwndOwner;
LPWAVEFORMATEX pwfx;
DWORD cbwfx;
LPCTSTR pszTitle;
TCHAR szFormatTag[ACMFORMATTAGDETAILS_FORMATTAG_CHARS];
TCHAR szFormat[ACMFORMATDETAILS_FORMAT_CHARS];
LPTSTR pszName;
n.b. can be written into
DWORD cchName
Should be at least 128 unless name is zero
DWORD fdwEnum;
LPWAVEFORMATEX pwfxEnum;
HINSTANCE hInstance;
LPCTSTR pszTemplateName;
LPARAM lCustData;
ACMFORMATCHOOSEHOOKPROC pfnHook;
None
ACMFORMATCHOOSE_STYLEF_SHOWHELP
ACMFORMATCHOOSE_STYLEF_ENABLEHOOK
ACMFORMATCHOOSE_STYLEF_ENABLETEMPLATE
ACMFORMATCHOOSE_STYLEF_ENABLETEMPLATEHANDLE
ACMFORMATCHOOSE_STYLEF_INITTOWFXSTRUCT
ACMFORMATCHOOSE_STYLEF_CONTEXTHELP
ACMFORMATDETAILS
http://msdn.microsoft.com/en-us/library/dd742913%28VS.85%29.aspx
ACMFORMATDETAILS_FORMAT_CHARS
DWORD cbStruct;
DWORD dwFormatIndex;
DWORD dwFormatTag;
DWORD fdwSupport;
LPWAVEFORMATEX pwfx;
DWORD cbwfx;
TCHAR szFormat[ACMFORMATDETAILS_FORMAT_CHARS];
Format Enumeration Flags
None
ACM_FORMATENUMF_CONVERT
The WAVEFORMATEX structure pointed to by the pwfx member of the ACMFORMATDETAILS structure is valid. The enumerator will only enumerate destination formats that can be converted from the given pwfx format.
ACM_FORMATENUMF_HARDWARE
The enumerator should only enumerate formats that are supported as native input or output formats on one or more of the installed waveform-audio devices. This flag provides a way for an application to choose only formats native to an installed waveform-audio device. This flag must be used with one or both of the ACM_FORMATENUMF_INPUT and ACM_FORMATENUMF_OUTPUT flags. Specifying both ACM_FORMATENUMF_INPUT and ACM_FORMATENUMF_OUTPUT will enumerate only formats that can be opened for input or output. This is true regardless of whether this flag is specified.
ACM_FORMATENUMF_INPUT
Enumerator should enumerate only formats that are supported for input (recording).
ACM_FORMATENUMF_NCHANNELS
The nChannels member of the WAVEFORMATEX structure pointed to by the pwfx member of the ACMFORMATDETAILS structure is valid. The enumerator will enumerate only a format that conforms to this attribute.
ACM_FORMATENUMF_NSAMPLESPERSEC
The nSamplesPerSec member of the WAVEFORMATEX structure pointed to by the pwfx member of the ACMFORMATDETAILS structure is valid. The enumerator will enumerate only a format that conforms to this attribute.
ACM_FORMATENUMF_OUTPUT
Enumerator should enumerate only formats that are supported for output (playback).
ACM_FORMATENUMF_SUGGEST
The WAVEFORMATEX structure pointed to by the pwfx member of the ACMFORMATDETAILS structure is valid. The enumerator will enumerate all suggested destination formats for the given pwfx format. This mechanism can be used instead of the acmFormatSuggest function to allow an application to choose the best suggested format for conversion. The dwFormatIndex member will always be set to zero on return.
ACM_FORMATENUMF_WBITSPERSAMPLE
The wBitsPerSample member of the WAVEFORMATEX structure pointed to by the pwfx member of the ACMFORMATDETAILS structure is valid. The enumerator will enumerate only a format that conforms to this attribute.
ACM_FORMATENUMF_WFORMATTAG
The wFormatTag member of the WAVEFORMATEX structure pointed to by the pwfx member of the ACMFORMATDETAILS structure is valid. The enumerator will enumerate only a format that conforms to this attribute. The dwFormatTag member of the ACMFORMATDETAILS structure must be equal to the wFormatTag member.
ACM_FORMATSUGGESTF_WFORMATTAG
ACM_FORMATSUGGESTF_NCHANNELS
ACM_FORMATSUGGESTF_NSAMPLESPERSEC
ACM_FORMATSUGGESTF_WBITSPERSAMPLE
ACM_FORMATSUGGESTF_TYPEMASK
ACM Format Tag
Format Tag Index
Format Tag
Format Size
Support Flags
Standard Formats Count
Format Description
ACMFORMATTAGDETAILS_FORMATTAG_CHARS
DWORD cbStruct;
DWORD dwFormatTagIndex;
DWORD dwFormatTag;
DWORD cbFormatSize;
DWORD fdwSupport;
DWORD cStandardFormats;
TCHAR szFormatTag[ACMFORMATTAGDETAILS_FORMATTAG_CHARS];
Interop definitions for Windows ACM (Audio Compression Manager) API
http://msdn.microsoft.com/en-us/library/dd742916%28VS.85%29.aspx
MMRESULT acmFormatSuggest(
HACMDRIVER had,
LPWAVEFORMATEX pwfxSrc,
LPWAVEFORMATEX pwfxDst,
DWORD cbwfxDst,
DWORD fdwSuggest);
http://msdn.microsoft.com/en-us/library/dd742928%28VS.85%29.aspx
MMRESULT acmStreamOpen(
LPHACMSTREAM phas,
HACMDRIVER had,
LPWAVEFORMATEX pwfxSrc,
LPWAVEFORMATEX pwfxDst,
LPWAVEFILTER pwfltr,
DWORD_PTR dwCallback,
DWORD_PTR dwInstance,
DWORD fdwOpen
A version with pointers for troubleshooting
http://msdn.microsoft.com/en-us/library/dd742910%28VS.85%29.aspx
UINT ACMFORMATCHOOSEHOOKPROC acmFormatChooseHookProc(
HWND hwnd,
UINT uMsg,
WPARAM wParam,
LPARAM lParam
ACM_METRIC_COUNT_DRIVERS
ACM_METRIC_COUNT_CODECS
ACM_METRIC_COUNT_CONVERTERS
ACM_METRIC_COUNT_FILTERS
ACM_METRIC_COUNT_DISABLED
ACM_METRIC_COUNT_HARDWARE
ACM_METRIC_COUNT_LOCAL_DRIVERS
ACM_METRIC_COUNT_LOCAL_CODECS
ACM_METRIC_COUNT_LOCAL_CONVERTERS
ACM_METRIC_COUNT_LOCAL_FILTERS
ACM_METRIC_COUNT_LOCAL_DISABLED
ACM_METRIC_HARDWARE_WAVE_INPUT
ACM_METRIC_HARDWARE_WAVE_OUTPUT
ACM_METRIC_MAX_SIZE_FORMAT
ACM_METRIC_MAX_SIZE_FILTER
ACM_METRIC_DRIVER_SUPPORT
ACM_METRIC_DRIVER_PRIORITY
AcmStream encapsulates an Audio Compression Manager Stream
used to convert audio from one format to another
Creates a new ACM stream to convert one format to another. Note that
not all conversions can be done in one step
The source audio format
The destination audio format
Creates a new ACM stream to convert one format to another, using a
specified driver identified and wave filter
the driver identifier
the source format
the wave filter
Returns the number of output bytes for a given number of input bytes
Number of input bytes
Number of output bytes
Returns the number of source bytes for a given number of destination bytes
Number of destination bytes
Number of source bytes
Suggests an appropriate PCM format that the compressed format can be converted
to in one step
The compressed format
The PCM format
Report that we have repositioned in the source stream
Converts the contents of the SourceBuffer into the DestinationBuffer
The number of bytes in the SourceBuffer
that need to be converted
The number of source bytes actually converted
The number of converted bytes in the DestinationBuffer
Converts the contents of the SourceBuffer into the DestinationBuffer
The number of bytes in the SourceBuffer
that need to be converted
The number of converted bytes in the DestinationBuffer
Frees resources associated with this ACM Stream
Frees resources associated with this ACM Stream
Frees resources associated with this ACM Stream
Returns the Source Buffer. Fill this with data prior to calling convert
Returns the Destination buffer. This will contain the converted data
after a successful call to Convert
ACM_STREAMCONVERTF_BLOCKALIGN
ACM_STREAMCONVERTF_START
ACM_STREAMCONVERTF_END
ACMSTREAMHEADER_STATUSF_DONE
ACMSTREAMHEADER_STATUSF_PREPARED
ACMSTREAMHEADER_STATUSF_INQUEUE
Interop structure for ACM stream headers.
ACMSTREAMHEADER
http://msdn.microsoft.com/en-us/library/dd742926%28VS.85%29.aspx
ACM_STREAMOPENF_QUERY, ACM will be queried to determine whether it supports the given conversion. A conversion stream will not be opened, and no handle will be returned in the phas parameter.
ACM_STREAMOPENF_ASYNC, Stream conversion should be performed asynchronously. If this flag is specified, the application can use a callback function to be notified when the conversion stream is opened and closed and after each buffer is converted. In addition to using a callback function, an application can examine the fdwStatus member of the ACMSTREAMHEADER structure for the ACMSTREAMHEADER_STATUSF_DONE flag.
ACM_STREAMOPENF_NONREALTIME, ACM will not consider time constraints when converting the data. By default, the driver will attempt to convert the data in real time. For some formats, specifying this flag might improve the audio quality or other characteristics.
CALLBACK_TYPEMASK, callback type mask
CALLBACK_NULL, no callback
CALLBACK_WINDOW, dwCallback is a HWND
CALLBACK_TASK, dwCallback is a HTASK
CALLBACK_FUNCTION, dwCallback is a FARPROC
CALLBACK_THREAD, thread ID replaces 16 bit task
CALLBACK_EVENT, dwCallback is an EVENT Handle
ACM_STREAMSIZEF_SOURCE
ACM_STREAMSIZEF_DESTINATION
Summary description for WaveFilter.
cbStruct
dwFilterTag
fdwFilter
reserved
Manufacturer codes from mmreg.h
Microsoft Corporation
Creative Labs, Inc
Media Vision, Inc.
Fujitsu Corp.
Artisoft, Inc.
Turtle Beach, Inc.
IBM Corporation
Vocaltec LTD.
Roland
DSP Solutions, Inc.
NEC
ATI
Wang Laboratories, Inc
Tandy Corporation
Voyetra
Antex Electronics Corporation
ICL Personal Systems
Intel Corporation
Advanced Gravis
Video Associates Labs, Inc.
InterActive Inc
Yamaha Corporation of America
Everex Systems, Inc
Echo Speech Corporation
Sierra Semiconductor Corp
Computer Aided Technologies
APPS Software International
DSP Group, Inc
microEngineering Labs
Computer Friends, Inc.
ESS Technology
Audio, Inc.
Motorola, Inc.
Canopus, co., Ltd.
Seiko Epson Corporation
Truevision
Aztech Labs, Inc.
Videologic
SCALACS
Korg Inc.
Audio Processing Technology
Integrated Circuit Systems, Inc.
Iterated Systems, Inc.
Metheus
Logitech, Inc.
Winnov, Inc.
NCR Corporation
EXAN
AST Research Inc.
Willow Pond Corporation
Sonic Foundry
Vitec Multimedia
MOSCOM Corporation
Silicon Soft, Inc.
Supermac
Audio Processing Technology
Speech Compression
Ahead, Inc.
Dolby Laboratories
OKI
AuraVision Corporation
Ing C. Olivetti & C., S.p.A.
I/O Magic Corporation
Matsushita Electric Industrial Co., LTD.
Control Resources Limited
Xebec Multimedia Solutions Limited
New Media Corporation
Natural MicroSystems
Lyrrus Inc.
Compusic
OPTi Computers Inc.
Adlib Accessories Inc.
Compaq Computer Corp.
Dialogic Corporation
InSoft, Inc.
M.P. Technologies, Inc.
Weitek
Lernout & Hauspie
Quanta Computer Inc.
Apple Computer, Inc.
Digital Equipment Corporation
Mark of the Unicorn
Workbit Corporation
Ositech Communications Inc.
miro Computer Products AG
Cirrus Logic
ISOLUTION B.V.
Horizons Technology, Inc
Computer Concepts Ltd
Voice Technologies Group, Inc.
Radius
Rockwell International
Co. XYZ for testing
Opcode Systems
Voxware Inc
Northern Telecom Limited
APICOM
Grande Software
ADDX
Wildcat Canyon Software
Rhetorex Inc
Brooktree Corporation
ENSONIQ Corporation
FAST Multimedia AG
NVidia Corporation
OKSORI Co., Ltd.
DiAcoustics, Inc.
Gulbransen, Inc.
Kay Elemetrics, Inc.
Crystal Semiconductor Corporation
Splash Studios
Quarterdeck Corporation
TDK Corporation
Digital Audio Labs, Inc.
Seer Systems, Inc.
PictureTel Corporation
AT&T Microelectronics
Osprey Technologies, Inc.
Mediatrix Peripherals
SounDesignS M.C.S. Ltd.
A.L. Digital Ltd.
Spectrum Signal Processing, Inc.
Electronic Courseware Systems, Inc.
AMD
Core Dynamics
CANAM Computers
Softsound, Ltd.
Norris Communications, Inc.
Danka Data Devices
EuPhonics
Precept Software, Inc.
Crystal Net Corporation
Chromatic Research, Inc
Voice Information Systems, Inc
Vienna Systems
Connectix Corporation
Gadget Labs LLC
Frontier Design Group LLC
Viona Development GmbH
Casio Computer Co., LTD
Diamond Multimedia
S3
Fraunhofer
Summary description for MmException.
Creates a new MmException
The result returned by the Windows API call
The name of the Windows API that failed
Helper function to automatically raise an exception on failure
The result of the API call
The API function name
Returns the Windows API result
Windows multimedia error codes from mmsystem.h.
no error, MMSYSERR_NOERROR
unspecified error, MMSYSERR_ERROR
device ID out of range, MMSYSERR_BADDEVICEID
driver failed enable, MMSYSERR_NOTENABLED
device already allocated, MMSYSERR_ALLOCATED
device handle is invalid, MMSYSERR_INVALHANDLE
no device driver present, MMSYSERR_NODRIVER
memory allocation error, MMSYSERR_NOMEM
function isn't supported, MMSYSERR_NOTSUPPORTED
error value out of range, MMSYSERR_BADERRNUM
invalid flag passed, MMSYSERR_INVALFLAG
invalid parameter passed, MMSYSERR_INVALPARAM
handle being used simultaneously on another thread (eg callback),MMSYSERR_HANDLEBUSY
specified alias not found, MMSYSERR_INVALIDALIAS
bad registry database, MMSYSERR_BADDB
registry key not found, MMSYSERR_KEYNOTFOUND
registry read error, MMSYSERR_READERROR
registry write error, MMSYSERR_WRITEERROR
registry delete error, MMSYSERR_DELETEERROR
registry value not found, MMSYSERR_VALNOTFOUND
driver does not call DriverCallback, MMSYSERR_NODRIVERCB
more data to be returned, MMSYSERR_MOREDATA
unsupported wave format, WAVERR_BADFORMAT
still something playing, WAVERR_STILLPLAYING
header not prepared, WAVERR_UNPREPARED
device is synchronous, WAVERR_SYNC
Conversion not possible (ACMERR_NOTPOSSIBLE)
Busy (ACMERR_BUSY)
Header Unprepared (ACMERR_UNPREPARED)
Cancelled (ACMERR_CANCELED)
invalid line (MIXERR_INVALLINE)
invalid control (MIXERR_INVALCONTROL)
invalid value (MIXERR_INVALVALUE)
WaveHeader interop structure (WAVEHDR)
http://msdn.microsoft.com/en-us/library/dd743837%28VS.85%29.aspx
pointer to locked data buffer (lpData)
length of data buffer (dwBufferLength)
used for input only (dwBytesRecorded)
for client's use (dwUser)
assorted flags (dwFlags)
loop control counter (dwLoops)
PWaveHdr, reserved for driver (lpNext)
reserved for driver
Wave Header Flags enumeration
WHDR_BEGINLOOP
This buffer is the first buffer in a loop. This flag is used only with output buffers.
WHDR_DONE
Set by the device driver to indicate that it is finished with the buffer and is returning it to the application.
WHDR_ENDLOOP
This buffer is the last buffer in a loop. This flag is used only with output buffers.
WHDR_INQUEUE
Set by Windows to indicate that the buffer is queued for playback.
WHDR_PREPARED
Set by Windows to indicate that the buffer has been prepared with the waveInPrepareHeader or waveOutPrepareHeader function.
WASAPI Loopback Capture
based on a contribution from "Pygmy" - http://naudio.codeplex.com/discussions/203605
Initialises a new instance of the WASAPI capture class
Initialises a new instance of the WASAPI capture class
Capture device to use
Gets the default audio loopback capture device
The default audio loopback capture device
Specify loopback
Recording wave format
Allows recording using the Windows waveIn APIs
Events are raised as recorded buffers are made available
Prepares a Wave input device for recording
Creates a WaveIn device using the specified window handle for callbacks
A valid window handle
Prepares a Wave input device for recording
Retrieves the capabilities of a waveIn device
Device to test
The WaveIn device capabilities
Called when we get a new buffer of recorded data
Start recording
Stop recording
Dispose pattern
Microphone Level
Dispose method
Indicates recorded data is available
Indicates that all recorded data has now been received.
Returns the number of Wave In devices available in the system
Milliseconds for the buffer. Recommended value is 100ms
Number of Buffers to use (usually 2 or 3)
The device number to use
WaveFormat we are recording in
WaveInCapabilities structure (based on WAVEINCAPS2 from mmsystem.h)
http://msdn.microsoft.com/en-us/library/ms713726(VS.85).aspx
wMid
wPid
vDriverVersion
Product Name (szPname)
Supported formats (bit flags) dwFormats
Supported channels (1 for mono 2 for stereo) (wChannels)
Seems to be set to -1 on a lot of devices
wReserved1
Checks to see if a given SupportedWaveFormat is supported
The SupportedWaveFormat
true if supported
Number of channels supported
The product name
The device name Guid (if provided)
The product name Guid (if provided)
The manufacturer guid (if provided)
The device name from the registry if supported
Event Args for WaveInStream event
Creates new WaveInEventArgs
Buffer containing recorded data. Note that it might not be completely
full.
The number of recorded bytes in Buffer.
MME Wave function interop
CALLBACK_NULL
No callback
CALLBACK_FUNCTION
dwCallback is a FARPROC
CALLBACK_EVENT
dwCallback is an EVENT handle
CALLBACK_WINDOW
dwCallback is a HWND
CALLBACK_THREAD
callback is a thread ID
WIM_OPEN
WIM_CLOSE
WIM_DATA
WOM_CLOSE
WOM_DONE
WOM_OPEN
WaveOutCapabilities structure (based on WAVEOUTCAPS2 from mmsystem.h)
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/multimed/htm/_win32_waveoutcaps_str.asp
wMid
wPid
vDriverVersion
Product Name (szPname)
Supported formats (bit flags) dwFormats
Supported channels (1 for mono 2 for stereo) (wChannels)
Seems to be set to -1 on a lot of devices
wReserved1
Optional functionality supported by the device
Checks to see if a given SupportedWaveFormat is supported
The SupportedWaveFormat
true if supported
Number of channels supported
Whether playback control is supported
The product name
The device name Guid (if provided)
The product name Guid (if provided)
The manufacturer guid (if provided)
Supported wave formats for WaveOutCapabilities
11.025 kHz, Mono, 8-bit
11.025 kHz, Stereo, 8-bit
11.025 kHz, Mono, 16-bit
11.025 kHz, Stereo, 16-bit
22.05 kHz, Mono, 8-bit
22.05 kHz, Stereo, 8-bit
22.05 kHz, Mono, 16-bit
22.05 kHz, Stereo, 16-bit
44.1 kHz, Mono, 8-bit
44.1 kHz, Stereo, 8-bit
44.1 kHz, Mono, 16-bit
44.1 kHz, Stereo, 16-bit
44.1 kHz, Mono, 8-bit
44.1 kHz, Stereo, 8-bit
44.1 kHz, Mono, 16-bit
44.1 kHz, Stereo, 16-bit
48 kHz, Mono, 8-bit
48 kHz, Stereo, 8-bit
48 kHz, Mono, 16-bit
48 kHz, Stereo, 16-bit
96 kHz, Mono, 8-bit
96 kHz, Stereo, 8-bit
96 kHz, Mono, 16-bit
96 kHz, Stereo, 16-bit
Flags indicating what features this WaveOut device supports
supports pitch control (WAVECAPS_PITCH)
supports playback rate control (WAVECAPS_PLAYBACKRATE)
supports volume control (WAVECAPS_VOLUME)
supports separate left-right volume control (WAVECAPS_LRVOLUME)
(WAVECAPS_SYNC)
(WAVECAPS_SAMPLEACCURATE)
Sample provider interface to make WaveChannel32 extensible
Still a bit ugly, hence internal at the moment - and might even make these into
bit depth converting WaveProviders
A sample provider mixer, allowing inputs to be added and removed
Creates a new MixingSampleProvider, with no inputs, but a specified WaveFormat
The WaveFormat of this mixer. All inputs must be in this format
Creates a new MixingSampleProvider, based on the given inputs
Mixer inputs - must all have the same waveformat, and must
all be of the same WaveFormat. There must be at least one input
Adds a WaveProvider as a Mixer input.
Must be PCM or IEEE float already
IWaveProvider mixer input
Adds a new mixer input
Mixer input
Removes a mixer input
Mixer input to remove
Removes all mixer inputs
Reads samples from this sample provider
Sample buffer
Offset into sample buffer
Number of samples required
Number of samples read
When set to true, the Read method always returns the number
of samples requested, even if there are no inputs, or if the
current inputs reach their end. Setting this to true effectively
makes this a never-ending sample provider, so take care if you plan
to write it out to a file.
The output WaveFormat of this sample provider
Converts a mono sample provider to stereo, with a customisable pan strategy
Initialises a new instance of the PanningSampleProvider
Source sample provider, must be mono
Reads samples from this sample provider
Sample buffer
Offset into sample buffer
Number of samples desired
Number of samples read
Pan value, must be between -1 (left) and 1 (right)
The pan strategy currently in use
The WaveFormat of this sample provider
Pair of floating point values, representing samples or multipliers
Left value
Right value
Required Interface for a Panning Strategy
Gets the left and right multipliers for a given pan value
Pan value from -1 to 1
Left and right multipliers in a stereo sample pair
Simplistic "balance" control - treating the mono input as if it was stereo
In the centre, both channels full volume. Opposite channel decays linearly
as balance is turned to to one side
Gets the left and right channel multipliers for this pan value
Pan value, between -1 and 1
Left and right multipliers
Square Root Pan, thanks to Yuval Naveh
Gets the left and right channel multipliers for this pan value
Pan value, between -1 and 1
Left and right multipliers
Sinus Pan, thanks to Yuval Naveh
Gets the left and right channel multipliers for this pan value
Pan value, between -1 and 1
Left and right multipliers
Linear Pan
Gets the left and right channel multipliers for this pan value
Pan value, between -1 and 1
Left and right multipliers
GSM 610
Represents a Wave file format
format type
number of channels
sample rate
for buffer estimation
block size of data
number of bits per sample of mono data
number of following bytes
Creates a new PCM 44.1Khz stereo 16 bit format
Creates a new 16 bit wave format with the specified sample
rate and channel count
Sample Rate
Number of channels
Gets the size of a wave buffer equivalent to the latency in milliseconds.
The milliseconds.
Creates a WaveFormat with custom members
The encoding
Sample Rate
Number of channels
Average Bytes Per Second
Block Align
Bits Per Sample
Creates an A-law wave format
Sample Rate
Number of Channels
Wave Format
Creates a Mu-law wave format
Sample Rate
Number of Channels
Wave Format
Creates a new PCM format with the specified sample rate, bit depth and channels
Creates a new 32 bit IEEE floating point wave format
sample rate
number of channels
Helper function to retrieve a WaveFormat structure from a pointer
WaveFormat structure
Helper function to marshal WaveFormat to an IntPtr
WaveFormat
IntPtr to WaveFormat structure (needs to be freed by callee)
Reads in a WaveFormat (with extra data) from a fmt chunk (chunk identifier and
length should already have been read)
Binary reader
Format chunk length
A WaveFormatExtraData
Reads a new WaveFormat object from a stream
A binary reader that wraps the stream
Reports this WaveFormat as a string
String describing the wave format
Compares with another WaveFormat object
Object to compare to
True if the objects are the same
Provides a Hashcode for this WaveFormat
A hashcode
Writes this WaveFormat object to a stream
the output stream
Returns the encoding type used
Returns the number of channels (1=mono,2=stereo etc)
Returns the sample rate (samples per second)
Returns the average number of bytes used per second
Returns the block alignment
Returns the number of bits per sample (usually 16 or 32, sometimes 24 or 8)
Can be 0 for some codecs
Returns the number of extra bytes used by this waveformat. Often 0,
except for compressed formats which store extra data after the WAVEFORMATEX header
Creates a GSM 610 WaveFormat
For now hardcoded to 13kbps
Writes this structure to a BinaryWriter
Samples per block
IMA/DVI ADPCM Wave Format
Work in progress
parameterless constructor for Marshalling
Creates a new IMA / DVI ADPCM Wave Format
Sample Rate
Number of channels
Bits Per Sample
MP3 WaveFormat, MPEGLAYER3WAVEFORMAT from mmreg.h
Wave format ID (wID)
Padding flags (fdwFlags)
Block Size (nBlockSize)
Frames per block (nFramesPerBlock)
Codec Delay (nCodecDelay)
Creates a new MP3 WaveFormat
Wave Format Padding Flags
MPEGLAYER3_FLAG_PADDING_ISO
MPEGLAYER3_FLAG_PADDING_ON
MPEGLAYER3_FLAG_PADDING_OFF
Wave Format ID
MPEGLAYER3_ID_UNKNOWN
MPEGLAYER3_ID_MPEG
MPEGLAYER3_ID_CONSTANTFRAMESIZE
DSP Group TrueSpeech
DSP Group TrueSpeech WaveFormat
Writes this structure to a BinaryWriter
Microsoft ADPCM
See http://icculus.org/SDL_sound/downloads/external_documentation/wavecomp.htm
Empty constructor needed for marshalling from a pointer
Microsoft ADPCM
Sample Rate
Channels
Serializes this wave format
Binary writer
String Description of this WaveFormat
Samples per block
Number of coefficients
Coefficients
Custom marshaller for WaveFormat structures
Gets the instance of this marshaller
Clean up managed data
Clean up native data
Get native data size
Marshal managed to native
Marshal Native to Managed
Summary description for WaveFormatEncoding.
WAVE_FORMAT_UNKNOWN, Microsoft Corporation
WAVE_FORMAT_PCM Microsoft Corporation
WAVE_FORMAT_ADPCM Microsoft Corporation
WAVE_FORMAT_IEEE_FLOAT Microsoft Corporation
WAVE_FORMAT_VSELP Compaq Computer Corp.
WAVE_FORMAT_IBM_CVSD IBM Corporation
WAVE_FORMAT_ALAW Microsoft Corporation
WAVE_FORMAT_MULAW Microsoft Corporation
WAVE_FORMAT_DTS Microsoft Corporation
WAVE_FORMAT_DRM Microsoft Corporation
WAVE_FORMAT_WMAVOICE9
WAVE_FORMAT_OKI_ADPCM OKI
WAVE_FORMAT_DVI_ADPCM Intel Corporation
WAVE_FORMAT_IMA_ADPCM Intel Corporation
WAVE_FORMAT_MEDIASPACE_ADPCM Videologic
WAVE_FORMAT_SIERRA_ADPCM Sierra Semiconductor Corp
WAVE_FORMAT_G723_ADPCM Antex Electronics Corporation
WAVE_FORMAT_DIGISTD DSP Solutions, Inc.
WAVE_FORMAT_DIGIFIX DSP Solutions, Inc.
WAVE_FORMAT_DIALOGIC_OKI_ADPCM Dialogic Corporation
WAVE_FORMAT_MEDIAVISION_ADPCM Media Vision, Inc.
WAVE_FORMAT_CU_CODEC Hewlett-Packard Company
WAVE_FORMAT_YAMAHA_ADPCM Yamaha Corporation of America
WAVE_FORMAT_SONARC Speech Compression
WAVE_FORMAT_DSPGROUP_TRUESPEECH DSP Group, Inc
WAVE_FORMAT_ECHOSC1 Echo Speech Corporation
WAVE_FORMAT_AUDIOFILE_AF36, Virtual Music, Inc.
WAVE_FORMAT_APTX Audio Processing Technology
WAVE_FORMAT_AUDIOFILE_AF10, Virtual Music, Inc.
WAVE_FORMAT_PROSODY_1612, Aculab plc
WAVE_FORMAT_LRC, Merging Technologies S.A.
WAVE_FORMAT_DOLBY_AC2, Dolby Laboratories
WAVE_FORMAT_GSM610, Microsoft Corporation
WAVE_FORMAT_MSNAUDIO, Microsoft Corporation
WAVE_FORMAT_ANTEX_ADPCME, Antex Electronics Corporation
WAVE_FORMAT_CONTROL_RES_VQLPC, Control Resources Limited
WAVE_FORMAT_DIGIREAL, DSP Solutions, Inc.
WAVE_FORMAT_DIGIADPCM, DSP Solutions, Inc.
WAVE_FORMAT_CONTROL_RES_CR10, Control Resources Limited
WAVE_FORMAT_MPEG, Microsoft Corporation
WAVE_FORMAT_MPEGLAYER3, ISO/MPEG Layer3 Format Tag
WAVE_FORMAT_GSM
WAVE_FORMAT_G729
WAVE_FORMAT_G723
WAVE_FORMAT_ACELP
WAVE_FORMAT_RAW_AAC1
Windows Media Audio, WAVE_FORMAT_WMAUDIO2, Microsoft Corporation
Windows Media Audio Professional WAVE_FORMAT_WMAUDIO3, Microsoft Corporation
Windows Media Audio Lossless, WAVE_FORMAT_WMAUDIO_LOSSLESS
Windows Media Audio Professional over SPDIF WAVE_FORMAT_WMASPDIF (0x0164)
Advanced Audio Coding (AAC) audio in Audio Data Transport Stream (ADTS) format.
The format block is a WAVEFORMATEX structure with wFormatTag equal to WAVE_FORMAT_MPEG_ADTS_AAC.
The WAVEFORMATEX structure specifies the core AAC-LC sample rate and number of channels,
prior to applying spectral band replication (SBR) or parametric stereo (PS) tools, if present.
No additional data is required after the WAVEFORMATEX structure.
http://msdn.microsoft.com/en-us/library/dd317599%28VS.85%29.aspx
Source wmCodec.h
MPEG-4 audio transport stream with a synchronization layer (LOAS) and a multiplex layer (LATM).
The format block is a WAVEFORMATEX structure with wFormatTag equal to WAVE_FORMAT_MPEG_LOAS.
The WAVEFORMATEX structure specifies the core AAC-LC sample rate and number of channels,
prior to applying spectral SBR or PS tools, if present.
No additional data is required after the WAVEFORMATEX structure.
http://msdn.microsoft.com/en-us/library/dd317599%28VS.85%29.aspx
NOKIA_MPEG_ADTS_AAC
Source wmCodec.h
NOKIA_MPEG_RAW_AAC
Source wmCodec.h
VODAFONE_MPEG_ADTS_AAC
Source wmCodec.h
VODAFONE_MPEG_RAW_AAC
Source wmCodec.h
High-Efficiency Advanced Audio Coding (HE-AAC) stream.
The format block is an HEAACWAVEFORMAT structure.
http://msdn.microsoft.com/en-us/library/dd317599%28VS.85%29.aspx
WAVE_FORMAT_DVM
WAVE_FORMAT_VORBIS1 "Og" Original stream compatible
WAVE_FORMAT_VORBIS2 "Pg" Have independent header
WAVE_FORMAT_VORBIS3 "Qg" Have no codebook header
WAVE_FORMAT_VORBIS1P "og" Original stream compatible
WAVE_FORMAT_VORBIS2P "pg" Have independent headere
WAVE_FORMAT_VORBIS3P "qg" Have no codebook header
WAVE_FORMAT_EXTENSIBLE
WaveFormatExtensible
http://www.microsoft.com/whdc/device/audio/multichaud.mspx
Parameterless constructor for marshalling
Creates a new WaveFormatExtensible for PCM or IEEE
WaveFormatExtensible for PCM or floating point can be awkward to work with
This creates a regular WaveFormat structure representing the same audio format
Serialize
String representation
SubFormat (may be one of AudioMediaSubtypes)
This class used for marshalling from unmanaged code
parameterless constructor for marshalling
Reads this structure from a BinaryReader
Writes this structure to a BinaryWriter
Allows the extra data to be read
The WMA wave format.
May not be much use because WMA codec is a DirectShow DMO not an ACM
This class writes audio data to a .aif file on disk
Creates an Aiff file by reading all the data from a WaveProvider
BEWARE: the WaveProvider MUST return 0 from its Read method when it is finished,
or the Aiff File will grow indefinitely.
The filename to use
The source WaveProvider
AiffFileWriter that actually writes to a stream
Stream to be written to
Wave format to use
Creates a new AiffFileWriter
The filename to write to
The Wave Format of the output data
Read is not supported for a AiffFileWriter
Seek is not supported for a AiffFileWriter
SetLength is not supported for AiffFileWriter
Appends bytes to the AiffFile (assumes they are already in the correct format)
the buffer containing the wave data
the offset from which to start writing
the number of bytes to write
Writes a single sample to the Aiff file
the sample to write (assumed floating point with 1.0f as max value)
Writes 32 bit floating point samples to the Aiff file
They will be converted to the appropriate bit depth depending on the WaveFormat of the AIF file
The buffer containing the floating point samples
The offset from which to start writing
The number of floating point samples to write
Writes 16 bit samples to the Aiff file
The buffer containing the 16 bit samples
The offset from which to start writing
The number of 16 bit samples to write
Ensures data is written to disk
Actually performs the close,making sure the header contains the correct data
True if called from Dispose
Updates the header with file size information
Finaliser - should only be called if the user forgot to close this AiffFileWriter
The aiff file name or null if not applicable
Number of bytes of audio in the data chunk
WaveFormat of this aiff file
Returns false: Cannot read from a AiffFileWriter
Returns true: Can write to a AiffFileWriter
Returns false: Cannot seek within a AiffFileWriter
Gets the Position in the AiffFile (i.e. number of bytes written so far)
Raised when ASIO data has been recorded.
It is important to handle this as quickly as possible as it is in the buffer callback
Initialises a new instance of AsioAudioAvailableEventArgs
Pointers to the ASIO buffers for each channel
Pointers to the ASIO buffers for each channel
Number of samples in each buffer
Audio format within each buffer
Converts all the recorded audio into a buffer of 32 bit floating point samples, interleaved by channel
The samples as 32 bit floating point, interleaved
Gets as interleaved samples, allocating a float array
The samples as 32 bit floating point values
Pointer to a buffer per input channel
Pointer to a buffer per output channel
Allows you to write directly to the output buffers
If you do so, set SamplesPerBuffer = true,
and make sure all buffers are written to with valid data
Set to true if you have written to the output buffers
If so, AsioOut will not read from its source
Number of samples in each buffer
Audio format within each buffer
Most commonly this will be one of, Int32LSB, Int16LSB, Int24LSB or Float32LSB
ASIO Out Player. New implementation using an internal C# binding.
This implementation is only supporting Short16Bit and Float32Bit formats and is optimized
for 2 outputs channels .
SampleRate is supported only if ASIODriver is supporting it
This implementation is probably the first ASIODriver binding fully implemented in C#!
Original Contributor: Mark Heath
New Contributor to C# binding : Alexandre Mutel - email: alexandre_mutel at yahoo.fr
Represents the interface to a device that can play a WaveFile
Begin playback
Stop playback
Pause Playback
Initialise playback
The waveprovider to be played
Current playback state
The volume 1.0 is full scale
Indicates that playback has gone into a stopped state due to
reaching the end of the input stream or an error has been encountered during playback
Initializes a new instance of the class with the first
available ASIO Driver.
Initializes a new instance of the class with the driver name.
Name of the device.
Opens an ASIO output device
Device number (zero based)
Releases unmanaged resources and performs other cleanup operations before the
is reclaimed by garbage collection.
Dispose
Gets the names of the installed ASIO Driver.
an array of driver names
Determines whether ASIO is supported.
true if ASIO is supported; otherwise, false.
Inits the driver from the asio driver name.
Name of the driver.
Shows the control panel
Starts playback
Stops playback
Pauses playback
Initialises to play
Source wave provider
Initialises to play, with optional recording
Source wave provider - set to null for record only
Number of channels to record
Specify sample rate here if only recording, ignored otherwise
driver buffer update callback to fill the wave buffer.
The input channels.
The output channels.
Get the input channel name
channel index (zero based)
channel name
Get the output channel name
channel index (zero based)
channel name
Playback Stopped
When recording, fires whenever recorded audio is available
Gets the latency (in ms) of the playback driver
Playback State
Driver Name
The number of output channels we are currently using for playback
(Must be less than or equal to DriverOutputChannelCount)
The number of input channels we are currently recording from
(Must be less than or equal to DriverInputChannelCount)
The maximum number of input channels this ASIO driver supports
The maximum number of output channels this ASIO driver supports
By default the first channel on the input WaveProvider is sent to the first ASIO output.
This option sends it to the specified channel number.
Warning: make sure you don't set it higher than the number of available output channels -
the number of source channels.
n.b. Future NAudio may modify this
Input channel offset (used when recording), allowing you to choose to record from just one
specific input rather than them all
Sets the volume (1.0 is unity gain)
Not supported for ASIO Out. Set the volume on the input stream instead
A wave file writer that adds cue support
This class writes WAV data to a .wav file on disk
Creates a 16 bit Wave File from an ISampleProvider
BEWARE: the source provider must not return data indefinitely
The filename to write to
The source sample provider
Creates a Wave file by reading all the data from a WaveProvider
BEWARE: the WaveProvider MUST return 0 from its Read method when it is finished,
or the Wave File will grow indefinitely.
The filename to use
The source WaveProvider
WaveFileWriter that actually writes to a stream
Stream to be written to
Wave format to use
Creates a new WaveFileWriter
The filename to write to
The Wave Format of the output data
Read is not supported for a WaveFileWriter
Seek is not supported for a WaveFileWriter
SetLength is not supported for WaveFileWriter
Appends bytes to the WaveFile (assumes they are already in the correct format)
the buffer containing the wave data
the offset from which to start writing
the number of bytes to write
Appends bytes to the WaveFile (assumes they are already in the correct format)
the buffer containing the wave data
the offset from which to start writing
the number of bytes to write
Writes a single sample to the Wave file
the sample to write (assumed floating point with 1.0f as max value)
Writes 32 bit floating point samples to the Wave file
They will be converted to the appropriate bit depth depending on the WaveFormat of the WAV file
The buffer containing the floating point samples
The offset from which to start writing
The number of floating point samples to write
Writes 16 bit samples to the Wave file
The buffer containing the 16 bit samples
The offset from which to start writing
The number of 16 bit samples to write
Writes 16 bit samples to the Wave file
The buffer containing the 16 bit samples
The offset from which to start writing
The number of 16 bit samples to write
Ensures data is written to disk
Actually performs the close,making sure the header contains the correct data
True if called from Dispose
Updates the header with file size information
Finaliser - should only be called if the user forgot to close this WaveFileWriter
The wave file name or null if not applicable
Number of bytes of audio in the data chunk
WaveFormat of this wave file
Returns false: Cannot read from a WaveFileWriter
Returns true: Can write to a WaveFileWriter
Returns false: Cannot seek within a WaveFileWriter
Gets the Position in the WaveFile (i.e. number of bytes written so far)
Writes a wave file, including a cues chunk
Adds a cue to the Wave file
Sample position
Label text
Updates the header, and writes the cues out
Media Foundation Encoder class allows you to use Media Foundation to encode an IWaveProvider
to any supported encoding format
Queries the available bitrates for a given encoding output type, sample rate and number of channels
Audio subtype - a value from the AudioSubtypes class
The sample rate of the PCM to encode
The number of channels of the PCM to encode
An array of available bitrates in average bits per second
Gets all the available media types for a particular
Audio subtype - a value from the AudioSubtypes class
An array of available media types that can be encoded with this subtype
Helper function to simplify encoding Window Media Audio
Should be supported on Vista and above (not tested)
Input provider, must be PCM
Output file path, should end with .wma
Desired bitrate. Use GetEncodeBitrates to find the possibilities for your input type
Helper function to simplify encoding to MP3
By default, will only be available on Windows 8 and above
Input provider, must be PCM
Output file path, should end with .mp3
Desired bitrate. Use GetEncodeBitrates to find the possibilities for your input type
Helper function to simplify encoding to AAC
By default, will only be available on Windows 7 and above
Input provider, must be PCM
Output file path, should end with .mp4 (or .aac on Windows 8)
Desired bitrate. Use GetEncodeBitrates to find the possibilities for your input type
Tries to find the encoding media type with the closest bitrate to that specified
Audio subtype, a value from AudioSubtypes
Your encoder input format (used to check sample rate and channel count)
Your desired bitrate
The closest media type, or null if none available
Creates a new encoder that encodes to the specified output media type
Desired output media type
Encodes a file
Output filename (container type is deduced from the filename)
Input provider (should be PCM, some encoders will also allow IEEE float)
Disposes this instance
Disposes this instance
Finalizer
Media Type helper class, simplifying working with IMFMediaType
(will probably change in the future, to inherit from an attributes class)
Currently does not release the COM object, so you must do that yourself
Wraps an existing IMFMediaType object
The IMFMediaType object
Creates and wraps a new IMFMediaType object
Creates and wraps a new IMFMediaType object based on a WaveFormat
WaveFormat
Tries to get a UINT32 value, returning a default value if it doesn't exist
Attribute key
Default value
Value or default if key doesn't exist
The Sample Rate (valid for audio media types)
The number of Channels (valid for audio media types)
The number of bits per sample (n.b. not always valid for compressed audio types)
The average bytes per second (valid for audio media types)
The Media Subtype. For audio, is a value from the AudioSubtypes class
The Major type, e.g. audio or video (from the MediaTypes class)
Access to the actual IMFMediaType object
Use to pass to MF APIs or Marshal.ReleaseComObject when you are finished with it
Stopped Event Args
Initializes a new instance of StoppedEventArgs
An exception to report (null if no exception)
An exception. Will be null if the playback or record operation stopped
IWaveBuffer interface use to store wave datas.
Data can be manipulated with arrays (,,
, ) that are pointing to the same memory buffer.
This is a requirement for all subclasses.
Use the associated Count property based on the type of buffer to get the number of data in the
buffer.
for the standard implementation using C# unions.
Gets the byte buffer.
The byte buffer.
Gets the float buffer.
The float buffer.
Gets the short buffer.
The short buffer.
Gets the int buffer.
The int buffer.
Gets the max size in bytes of the byte buffer..
Maximum number of bytes in the buffer.
Gets the byte buffer count.
The byte buffer count.
Gets the float buffer count.
The float buffer count.
Gets the short buffer count.
The short buffer count.
Gets the int buffer count.
The int buffer count.
Interface for IWavePlayers that can report position
Position (in terms of bytes played - does not necessarily)
Position in bytes
Gets a instance indicating the format the hardware is using.
NativeDirectSoundOut using DirectSound COM interop.
Contact author: Alexandre Mutel - alexandre_mutel at yahoo.fr
Modified by: Graham "Gee" Plumb
Initializes a new instance of the class.
Initializes a new instance of the class.
Initializes a new instance of the class.
Initializes a new instance of the class.
(40ms seems to work under Vista).
The latency.
Selected device
Releases unmanaged resources and performs other cleanup operations before the
is reclaimed by garbage collection.
Begin playback
Stop playback
Pause Playback
Gets the current position in bytes from the wave output device.
(n.b. this is not the same thing as the position within your reader
stream)
Position in bytes
Initialise playback
The waveprovider to be played
Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
Determines whether the SecondaryBuffer is lost.
true if [is buffer lost]; otherwise, false.
Convert ms to bytes size according to WaveFormat
The ms
number of byttes
Processes the samples in a separate thread.
Stop playback
Feeds the SecondaryBuffer with the WaveStream
number of bytes to feed
Instanciate DirectSound from the DLL
The GUID.
The direct sound.
The p unk outer.
DirectSound default playback device GUID
DirectSound default capture device GUID
DirectSound default device for voice playback
DirectSound default device for voice capture
The DirectSoundEnumerate function enumerates the DirectSound drivers installed in the system.
callback function
User context
Gets the HANDLE of the desktop window.
HANDLE of the Desktop window
Playback Stopped
Gets the DirectSound output devices in the system
Gets the current position from the wave output device.
Current playback state
The volume 1.0 is full scale
IDirectSound interface
IDirectSoundBuffer interface
IDirectSoundNotify interface
The DSEnumCallback function is an application-defined callback function that enumerates the DirectSound drivers.
The system calls this function in response to the application's call to the DirectSoundEnumerate or DirectSoundCaptureEnumerate function.
Address of the GUID that identifies the device being enumerated, or NULL for the primary device. This value can be passed to the DirectSoundCreate8 or DirectSoundCaptureCreate8 function to create a device object for that driver.
Address of a null-terminated string that provides a textual description of the DirectSound device.
Address of a null-terminated string that specifies the module name of the DirectSound driver corresponding to this device.
Address of application-defined data. This is the pointer passed to DirectSoundEnumerate or DirectSoundCaptureEnumerate as the lpContext parameter.
Returns TRUE to continue enumerating drivers, or FALSE to stop.
Class for enumerating DirectSound devices
The device identifier
Device description
Device module name
Playback State
Stopped
Playing
Paused
Support for playback using Wasapi
WASAPI Out using default audio endpoint
ShareMode - shared or exclusive
Desired latency in milliseconds
WASAPI Out using default audio endpoint
ShareMode - shared or exclusive
true if sync is done with event. false use sleep.
Desired latency in milliseconds
Creates a new WASAPI Output
Device to use
true if sync is done with event. false use sleep.
Gets the current position in bytes from the wave output device.
(n.b. this is not the same thing as the position within your reader
stream)
Position in bytes
Begin Playback
Stop playback and flush buffers
Stop playback without flushing buffers
Initialize for playing the specified wave stream
IWaveProvider to play
Dispose
Playback Stopped
Gets a instance indicating the format the hardware is using.
Playback State
Volume
Retrieve the AudioStreamVolume object for this audio stream
This returns the AudioStreamVolume object ONLY for shared audio streams.
This is thrown when an exclusive audio stream is being used.
WaveBuffer class use to store wave datas. Data can be manipulated with arrays
(,,, ) that are pointing to the
same memory buffer. Use the associated Count property based on the type of buffer to get the number of
data in the buffer.
Implicit casting is now supported to float[], byte[], int[], short[].
You must not use Length on returned arrays.
n.b. FieldOffset is 8 now to allow it to work natively on 64 bit
Number of Bytes
Initializes a new instance of the class.
The number of bytes. The size of the final buffer will be aligned on 4 Bytes (upper bound)
Initializes a new instance of the class binded to a specific byte buffer.
A byte buffer to bound the WaveBuffer to.
Binds this WaveBuffer instance to a specific byte buffer.
A byte buffer to bound the WaveBuffer to.
Performs an implicit conversion from to .
The wave buffer.
The result of the conversion.
Performs an implicit conversion from to .
The wave buffer.
The result of the conversion.
Performs an implicit conversion from to .
The wave buffer.
The result of the conversion.
Performs an implicit conversion from to .
The wave buffer.
The result of the conversion.
Clears the associated buffer.
Copy this WaveBuffer to a destination buffer up to ByteBufferCount bytes.
Checks the validity of the count parameters.
Name of the arg.
The value.
The size of value.
Gets the byte buffer.
The byte buffer.
Gets the float buffer.
The float buffer.
Gets the short buffer.
The short buffer.
Gets the int buffer.
The int buffer.
Gets the max size in bytes of the byte buffer..
Maximum number of bytes in the buffer.
Gets or sets the byte buffer count.
The byte buffer count.
Gets or sets the float buffer count.
The float buffer count.
Gets or sets the short buffer count.
The short buffer count.
Gets or sets the int buffer count.
The int buffer count.
Wave Callback Info
Sets up a new WaveCallbackInfo for function callbacks
Sets up a new WaveCallbackInfo to use a New Window
IMPORTANT: only use this on the GUI thread
Sets up a new WaveCallbackInfo to use an existing window
IMPORTANT: only use this on the GUI thread
Callback Strategy
Window Handle (if applicable)
Wave Callback Strategy
Use a function
Create a new window (should only be done if on GUI thread)
Use an existing window handle
Use an event handle
Represents a wave out device
Retrieves the capabilities of a waveOut device
Device to test
The WaveOut device capabilities
Creates a default WaveOut device
Will use window callbacks if called from a GUI thread, otherwise function
callbacks
Creates a WaveOut device using the specified window handle for callbacks
A valid window handle
Opens a WaveOut device
Initialises the WaveOut device
WaveProvider to play
Start playing the audio from the WaveStream
Pause the audio
Resume playing after a pause from the same position
Stop and reset the WaveOut device
Gets the current position in bytes from the wave output device.
(n.b. this is not the same thing as the position within your reader
stream - it calls directly into waveOutGetPosition)
Position in bytes
Closes this WaveOut device
Closes the WaveOut device and disposes of buffers
True if called from Dispose
Finalizer. Only called when user forgets to call Dispose
Indicates playback has stopped automatically
Returns the number of Wave Out devices available in the system
Gets or sets the desired latency in milliseconds
Should be set before a call to Init
Gets or sets the number of buffers used
Should be set before a call to Init
Gets or sets the device number
Should be set before a call to Init
This must be between 0 and DeviceCount - 1.
Gets a instance indicating the format the hardware is using.
Playback State
Volume for this device 1.0 is full scale
Alternative WaveOut class, making use of the Event callback
Opens a WaveOut device
Initialises the WaveOut device
WaveProvider to play
Start playing the audio from the WaveStream
Pause the audio
Resume playing after a pause from the same position
Stop and reset the WaveOut device
Gets the current position in bytes from the wave output device.
(n.b. this is not the same thing as the position within your reader
stream - it calls directly into waveOutGetPosition)
Position in bytes
Closes this WaveOut device
Closes the WaveOut device and disposes of buffers
True if called from Dispose
Finalizer. Only called when user forgets to call Dispose
Indicates playback has stopped automatically
Gets or sets the desired latency in milliseconds
Should be set before a call to Init
Gets or sets the number of buffers used
Should be set before a call to Init
Gets or sets the device number
Should be set before a call to Init
This must be between 0 and DeviceCount - 1.
Gets a instance indicating the format the hardware is using.
Playback State
Obsolete property
Simple SampleProvider that passes through audio unchanged and raises
an event every n samples with the maximum sample value from the period
for metering purposes
Initialises a new instance of MeteringSampleProvider that raises 10 stream volume
events per second
Source sample provider
Initialises a new instance of MeteringSampleProvider
source sampler provider
Number of samples between notifications
Reads samples from this Sample Provider
Sample buffer
Offset into sample buffer
Number of samples required
Number of samples read
Number of Samples per notification
Raised periodically to inform the user of the max volume
The WaveFormat of this sample provider
Event args for aggregated stream volume
Max sample values array (one for each channel)
Simple class that raises an event on every sample
An interface for WaveStreams which can report notification of individual samples
A sample has been detected
Initializes a new instance of NotifyingSampleProvider
Source Sample Provider
Reads samples from this sample provider
Sample buffer
Offset into sample buffer
Number of samples desired
Number of samples read
WaveFormat
Sample notifier
Very simple sample provider supporting adjustable gain
Initializes a new instance of VolumeSampleProvider
Source Sample Provider
Reads samples from this sample provider
Sample buffer
Offset into sample buffer
Number of samples desired
Number of samples read
WaveFormat
Allows adjusting the volume, 1.0f = full volume
Helper class for when you need to convert back to an IWaveProvider from
an ISampleProvider. Keeps it as IEEE float
Initializes a new instance of the WaveProviderFloatToWaveProvider class
Source wave provider
Reads from this provider
The waveformat of this WaveProvider (same as the source)
Provides a buffered store of samples
Read method will return queued samples or fill buffer with zeroes
Now backed by a circular buffer
Creates a new buffered WaveProvider
WaveFormat
Adds samples. Takes a copy of buffer, so that buffer can be reused if necessary
Reads from this WaveProvider
Will always return count bytes, since we will zero-fill the buffer if not enough available
Discards all audio from the buffer
Buffer length in bytes
Buffer duration
If true, when the buffer is full, start throwing away data
if false, AddSamples will throw an exception when buffer is full
The number of buffered bytes
Buffered Duration
Gets the WaveFormat
No nonsense mono to stereo provider, no volume adjustment,
just copies input to left and right.
Initializes a new instance of MonoToStereoSampleProvider
Source sample provider
Reads samples from this provider
Sample buffer
Offset into sample buffer
Number of samples required
Number of samples read
WaveFormat of this provider
The Media Foundation Resampler Transform
An abstract base class for simplifying working with Media Foundation Transforms
You need to override the method that actually creates and configures the transform
The Source Provider
The Output WaveFormat
Constructs a new MediaFoundationTransform wrapper
Will read one second at a time
The source provider for input data to the transform
The desired output format
To be implemented by overriding classes. Create the transform object, set up its input and output types,
and configure any custom properties in here
An object implementing IMFTrasform
Disposes this MediaFoundation transform
Disposes this Media Foundation Transform
Destructor
Reads data out of the source, passing it through the transform
Output buffer
Offset within buffer to write to
Desired byte count
Number of bytes read
Attempts to read from the transform
Some useful info here:
http://msdn.microsoft.com/en-gb/library/windows/desktop/aa965264%28v=vs.85%29.aspx#process_data
Indicate that the source has been repositioned and completely drain out the transforms buffers
The output WaveFormat of this Media Foundation Transform
Creates the Media Foundation Resampler, allowing modifying of sample rate, bit depth and channel count
Source provider, must be PCM
Output format, must also be PCM
Creates a resampler with a specified target output sample rate
Source provider
Output sample rate
Creates and configures the actual Resampler transform
A newly created and configured resampler MFT
Disposes this resampler
Gets or sets the Resampler quality. n.b. set the quality before starting to resample.
1 is lowest quality (linear interpolation) and 60 is best quality
WaveProvider that can mix together multiple 32 bit floating point input provider
All channels must have the same number of inputs and same sample rate
n.b. Work in Progress - not tested yet
Creates a new MixingWaveProvider32
Creates a new 32 bit MixingWaveProvider32
inputs - must all have the same format.
Thrown if the input streams are not 32 bit floating point,
or if they have different formats to each other
Add a new input to the mixer
The wave input to add
Remove an input from the mixer
waveProvider to remove
Reads bytes from this wave stream
buffer to read into
offset into buffer
number of bytes required
Number of bytes read.
Thrown if an invalid number of bytes requested
Actually performs the mixing
The number of inputs to this mixer
Allows any number of inputs to be patched to outputs
Uses could include swapping left and right channels, turning mono into stereo,
feeding different input sources to different soundcard outputs etc
Creates a multiplexing wave provider, allowing re-patching of input channels to different
output channels
Input wave providers. Must all be of the same format, but can have any number of channels
Desired number of output channels.
persistent temporary buffer to prevent creating work for garbage collector
Reads data from this WaveProvider
Buffer to be filled with sample data
Offset to write to within buffer, usually 0
Number of bytes required
Number of bytes read
Connects a specified input channel to an output channel
Input Channel index (zero based). Must be less than InputChannelCount
Output Channel index (zero based). Must be less than OutputChannelCount
The WaveFormat of this WaveProvider
The number of input channels. Note that this is not the same as the number of input wave providers. If you pass in
one stereo and one mono input provider, the number of input channels is three.
The number of output channels, as specified in the constructor.
Takes a stereo 16 bit input and turns it mono, allowing you to select left or right channel only or mix them together
Creates a new mono waveprovider based on a stereo input
Stereo 16 bit PCM input
Reads bytes from this WaveProvider
1.0 to mix the mono source entirely to the left channel
1.0 to mix the mono source entirely to the right channel
Output Wave Format
Converts from mono to stereo, allowing freedom to route all, some, or none of the incoming signal to left or right channels
Creates a new stereo waveprovider based on a mono input
Mono 16 bit PCM input
Reads bytes from this WaveProvider
1.0 to copy the mono stream to the left channel without adjusting volume
1.0 to copy the mono stream to the right channel without adjusting volume
Output Wave Format
Helper class allowing us to modify the volume of a 16 bit stream without converting to IEEE float
Constructs a new VolumeWaveProvider16
Source provider, must be 16 bit PCM
Read bytes from this WaveProvider
Buffer to read into
Offset within buffer to read to
Bytes desired
Bytes read
Gets or sets volume.
1.0 is full scale, 0.0 is silence, anything over 1.0 will amplify but potentially clip
WaveFormat of this WaveProvider
Converts IEEE float to 16 bit PCM, optionally clipping and adjusting volume along the way
Creates a new WaveFloatTo16Provider
the source provider
Reads bytes from this wave stream
The destination buffer
Offset into the destination buffer
Number of bytes read
Number of bytes read.
Volume of this channel. 1.0 = full scale
Converts 16 bit PCM to IEEE float, optionally adjusting volume along the way
Creates a new Wave16toFloatProvider
the source provider
Reads bytes from this wave stream
The destination buffer
Offset into the destination buffer
Number of bytes read
Number of bytes read.
Volume of this channel. 1.0 = full scale
Buffered WaveProvider taking source data from WaveIn
Creates a new WaveInProvider
n.b. Should make sure the WaveFormat is set correctly on IWaveIn before calling
The source of wave data
Reads data from the WaveInProvider
The WaveFormat
Base class for creating a 16 bit wave provider
Initializes a new instance of the WaveProvider16 class
defaulting to 44.1kHz mono
Initializes a new instance of the WaveProvider16 class with the specified
sample rate and number of channels
Allows you to specify the sample rate and channels for this WaveProvider
(should be initialised before you pass it to a wave player)
Implements the Read method of IWaveProvider by delegating to the abstract
Read method taking a short array
Method to override in derived classes
Supply the requested number of samples into the buffer
The Wave Format
Base class for creating a 32 bit floating point wave provider
Can also be used as a base class for an ISampleProvider that can
be plugged straight into anything requiring an IWaveProvider
Initializes a new instance of the WaveProvider32 class
defaulting to 44.1kHz mono
Initializes a new instance of the WaveProvider32 class with the specified
sample rate and number of channels
Allows you to specify the sample rate and channels for this WaveProvider
(should be initialised before you pass it to a wave player)
Implements the Read method of IWaveProvider by delegating to the abstract
Read method taking a float array
Method to override in derived classes
Supply the requested number of samples into the buffer
The Wave Format
Helper class turning an already 32 bit floating point IWaveProvider
into an ISampleProvider - hopefully not needed for most applications
Initializes a new instance of the WaveToSampleProvider class
Source wave provider, must be IEEE float
Reads from this provider
Utility class to intercept audio from an IWaveProvider and
save it to disk
Constructs a new WaveRecorder
The location to write the WAV file to
The Source Wave Provider
Read simply returns what the source returns, but writes to disk along the way
Closes the WAV file
The WaveFormat
A read-only stream of AIFF data based on an aiff file
with an associated WaveFormat
originally contributed to NAudio by Giawa
Base class for all WaveStream classes. Derives from stream.
Flush does not need to do anything
See
An alternative way of repositioning.
See
Sets the length of the WaveStream. Not Supported.
Writes to the WaveStream. Not Supported.
Moves forward or backwards the specified number of seconds in the stream
Number of seconds to move, can be negative
Whether the WaveStream has non-zero sample data at the current position for the
specified count
Number of bytes to read
Retrieves the WaveFormat for this stream
We can read from this stream
We can seek within this stream
We can't write to this stream
The block alignment for this wavestream. Do not modify the Position
to anything that is not a whole multiple of this value
The current position in the stream in Time format
Total length in real-time of the stream (may be an estimate for compressed files)
Supports opening a AIF file
The AIF is of similar nastiness to the WAV format.
This supports basic reading of uncompressed PCM AIF files,
with 8, 16, 24 and 32 bit PCM data.
Creates an Aiff File Reader based on an input stream
The input stream containing a AIF file including header
Ensures valid AIFF header and then finds data offset.
The stream, positioned at the start of audio data
The format found
The position of the data chunk
The length of the data chunk
Additional chunks found
Cleans up the resources associated with this AiffFileReader
Reads bytes from the AIFF File
Number of Samples (if possible to calculate)
Position in the AIFF file
AIFF Chunk
Chunk Name
Chunk Length
Chunk start
Creates a new AIFF Chunk
AudioFileReader simplifies opening an audio file in NAudio
Simply pass in the filename, and it will attempt to open the
file and set up a conversion path that turns into PCM IEEE float.
ACM codecs will be used for conversion.
It provides a volume property and implements both WaveStream and
ISampleProvider, making it possibly the only stage in your audio
pipeline necessary for simple playback scenarios
Initializes a new instance of AudioFileReader
The file to open
Creates the reader stream, supporting all filetypes in the core NAudio library,
and ensuring we are in PCM format
File Name
Reads from this wave stream
Audio buffer
Offset into buffer
Number of bytes required
Number of bytes read
Reads audio from this sample provider
Sample buffer
Offset into sample buffer
Number of samples required
Number of samples read
Helper to convert source to dest bytes
Helper to convert dest to source bytes
Disposes this AudioFileReader
True if called from Dispose
WaveFormat of this stream
Length of this stream (in bytes)
Position of this stream (in bytes)
Gets or Sets the Volume of this AudioFileReader. 1.0f is full volume
Helper stream that lets us read from compressed audio files with large block alignment
as though we could read any amount and reposition anywhere
Creates a new BlockAlignReductionStream
the input stream
Disposes this WaveStream
Reads data from this stream
Block alignment of this stream
Wave Format
Length of this Stream
Current position within stream
Holds information on a cue: a labeled position within a Wave file
Creates a Cue based on a sample position and label
Cue position in samples
Label of the cue
Holds a list of cues
The specs for reading and writing cues from the cue and list RIFF chunks
are from http://www.sonicspot.com/guide/wavefiles.html and http://www.wotsit.org/
------------------------------
The cues are stored like this:
------------------------------
struct CuePoint
{
Int32 dwIdentifier;
Int32 dwPosition;
Int32 fccChunk;
Int32 dwChunkStart;
Int32 dwBlockStart;
Int32 dwSampleOffset;
}
struct CueChunk
{
Int32 chunkID;
Int32 chunkSize;
Int32 dwCuePoints;
CuePoint[] points;
}
------------------------------
Labels look like this:
------------------------------
struct ListHeader
{
Int32 listID; /* 'list' */
Int32 chunkSize; /* includes the Type ID below */
Int32 typeID; /* 'adtl' */
}
struct LabelChunk
{
Int32 chunkID;
Int32 chunkSize;
Int32 dwIdentifier;
Char[] dwText; /* Encoded with extended ASCII */
} LabelChunk;
Creates an empty cue list
Adds an item to the list
Cue
Creates a cue list from the cue RIFF chunk and the list RIFF chunk
The data contained in the cue chunk
The data contained in the list chunk
Gets the cues as the concatenated cue and list RIFF chunks.
RIFF chunks containing the cue data
Checks if the cue and list chunks exist and if so, creates a cue list
Gets sample positions for the embedded cues
Array containing the cue positions
Gets labels for the embedded cues
Array containing the labels
Number of cues
Accesses the cue at the specified index
A wave file reader supporting cue reading
This class supports the reading of WAV files,
providing a repositionable WaveStream that returns the raw data
contained in the WAV file
Supports opening a WAV file
The WAV file format is a real mess, but we will only
support the basic WAV file format which actually covers the vast
majority of WAV files out there. For more WAV file format information
visit www.wotsit.org. If you have a WAV file that can't be read by
this class, email it to the NAudio project and we will probably
fix this reader to support it
Creates a Wave File Reader based on an input stream
The input stream containing a WAV file including header
Gets the data for the specified chunk
Cleans up the resources associated with this WaveFileReader
Reads bytes from the Wave File
Attempts to read the next sample or group of samples as floating point normalised into the range -1.0f to 1.0f
An array of samples, 1 for mono, 2 for stereo etc. Null indicates end of file reached
Attempts to read a sample into a float. n.b. only applicable for uncompressed formats
Will normalise the value read into the range -1.0f to 1.0f if it comes from a PCM encoding
False if the end of the WAV data chunk was reached
Gets a list of the additional chunks found in this file
This is the length of audio data contained in this WAV file, in bytes
(i.e. the byte length of the data chunk, not the length of the WAV file itself)
Number of Samples (if possible to calculate)
This currently does not take into account number of channels, so
divide again by number of channels if you want the number of
audio 'frames'
Position in the WAV data chunk.
Loads a wavefile and supports reading cues
Cue List (can be null if cues not present)
Sample event arguments
Constructor
Left sample
Right sample
Class for reading any file that Media Foundation can play
Will only work in Windows Vista and above
Automatically converts to PCM
If it is a video file with multiple audio streams, it will pick out the first audio stream
Creates a new MediaFoundationReader based on the supplied file
Filename (can also be a URL e.g. http:// mms:// file://)
Creates a new MediaFoundationReader based on the supplied file
Filename
Advanced settings
Creates the reader (overridable by )
Reads from this wave stream
Buffer to read into
Offset in buffer
Bytes required
Number of bytes read; 0 indicates end of stream
Cleans up after finishing with this reader
true if called from Dispose
WaveFormat of this stream (n.b. this is after converting to PCM)
The bytesRequired of this stream in bytes (n.b may not be accurate)
Current position within this stream
WaveFormat has changed
Allows customisation of this reader class
Sets up the default settings for MediaFoundationReader
Allows us to request IEEE float output (n.b. no guarantee this will be accepted)
If true, the reader object created in the constructor is used in Read
Should only be set to true if you are working entirely on an STA thread, or
entirely with MTA threads.
If true, the reposition does not happen immediately, but waits until the
next call to read to be processed.
Class for reading from MP3 files
Supports opening a MP3 file
Supports opening a MP3 file
MP3 File name
Factory method to build a frame decompressor
Opens MP3 from a stream rather than a file
Will not dispose of this stream itself
The incoming stream containing MP3 data
Opens MP3 from a stream rather than a file
Will not dispose of this stream itself
The incoming stream containing MP3 data
Factory method to build a frame decompressor
Creates an ACM MP3 Frame decompressor. This is the default with NAudio
A WaveFormat object based
Gets the total length of this file in milliseconds.
Reads the next mp3 frame
Next mp3 frame, or null if EOF
Reads the next mp3 frame
Next mp3 frame, or null if EOF
Reads decompressed PCM data from our MP3 file.
Disposes this WaveStream
The MP3 wave format (n.b. NOT the output format of this stream - see the WaveFormat property)
ID3v2 tag if present
ID3v1 tag if present
This is the length in bytes of data available to be read out from the Read method
(i.e. the decompressed MP3 length)
n.b. this may return 0 for files whose length is unknown
Xing header if present
Function that can create an MP3 Frame decompressor
A WaveFormat object describing the MP3 file format
An MP3 Frame decompressor
Converts an IWaveProvider containing 16 bit PCM to an
ISampleProvider
Initialises a new instance of Pcm16BitToSampleProvider
Source wave provider
Reads samples from this sample provider
Sample buffer
Offset into sample buffer
Samples required
Number of samples read
Converts an IWaveProvider containing 24 bit PCM to an
ISampleProvider
Initialises a new instance of Pcm24BitToSampleProvider
Source Wave Provider
Reads floating point samples from this sample provider
sample buffer
offset within sample buffer to write to
number of samples required
number of samples provided
Converts an IWaveProvider containing 8 bit PCM to an
ISampleProvider
Initialises a new instance of Pcm8BitToSampleProvider
Source wave provider
Reads samples from this sample provider
Sample buffer
Offset into sample buffer
Number of samples to read
Number of samples read
WaveStream that simply passes on data from its source stream
(e.g. a MemoryStream)
Initialises a new instance of RawSourceWaveStream
The source stream containing raw audio
The waveformat of the audio in the source stream
Reads data from the stream
The WaveFormat of this stream
The length in bytes of this stream (if supported)
The current position in this stream
Wave Stream for converting between sample rates
WaveStream to resample using the DMO Resampler
Input Stream
Desired Output Format
Reads data from input stream
buffer
offset into buffer
Bytes required
Number of bytes read
Dispose
True if disposing (not from finalizer)
Stream Wave Format
Stream length in bytes
Stream position in bytes
Holds information about a RIFF file chunk
Creates a RiffChunk object
The chunk identifier
The chunk identifier converted to a string
The chunk length
The stream position this chunk is located at
A simple compressor
Create a new simple compressor stream
Source stream
Determine whether the stream has the required amount of data.
Number of bytes of data required from the stream.
Flag indicating whether the required amount of data is avialable.
Reads bytes from this stream
Buffer to read into
Offset in array to read into
Number of bytes to read
Number of bytes read
Disposes this stream
true if the user called this
Make-up Gain
Threshold
Ratio
Attack time
Release time
Turns gain on or off
Returns the stream length
Gets or sets the current position in the stream
Gets the WaveFormat of this stream
Gets the block alignment for this stream
WaveStream that converts 32 bit audio back down to 16 bit, clipping if necessary
Creates a new Wave32To16Stream
the source stream
Reads bytes from this wave stream
Destination buffer
Offset into destination buffer
Number of bytes read.
Conversion to 16 bit and clipping
Disposes this WaveStream
Sets the volume for this stream. 1.0f is full scale
Returns the stream length
Gets or sets the current position in the stream
Clip indicator. Can be reset.
Represents Channel for the WaveMixerStream
32 bit output and 16 bit input
It's output is always stereo
The input stream can be panned
Creates a new WaveChannel32
the source stream
stream volume (1 is 0dB)
pan control (-1 to 1)
Creates a WaveChannel32 with default settings
The source stream
Reads bytes from this wave stream
The destination buffer
Offset into the destination buffer
Number of bytes read
Number of bytes read.
Determines whether this channel has any data to play
to allow optimisation to not read, but bump position forward
Disposes this WaveStream
Raise the sample event (no check for null because it has already been done)
Gets the block alignment for this WaveStream
Returns the stream length
Gets or sets the current position in the stream
If true, Read always returns the number of bytes requested
Volume of this channel. 1.0 = full scale
Pan of this channel (from -1 to 1)
Sample
Utility class that takes an IWaveProvider input at any bit depth
and exposes it as an ISampleProvider. Can turn mono inputs into stereo,
and allows adjusting of volume
(The eventual successor to WaveChannel32)
This class also serves as an example of how you can link together several simple
Sample Providers to form a more useful class.
Initialises a new instance of SampleChannel
Source wave provider, must be PCM or IEEE
Initialises a new instance of SampleChannel
Source wave provider, must be PCM or IEEE
force mono inputs to become stereo
Reads samples from this sample provider
Sample buffer
Offset into sample buffer
Number of samples desired
Number of samples read
The WaveFormat of this Sample Provider
Allows adjusting the volume, 1.0f = full volume
Raised periodically to inform the user of the max volume
(before the volume meter)
WaveStream that passes through an ACM Codec
Creates a stream that can convert to PCM
The source stream
A PCM stream
Create a new WaveFormat conversion stream
Desired output format
Source stream
Converts source bytes to destination bytes
Converts destination bytes to source bytes
Reads bytes from this stream
Buffer to read into
Offset in buffer to read into
Number of bytes to read
Number of bytes read
Disposes this stream
true if the user called this
Returns the stream length
Gets or sets the current position in the stream
Gets the WaveFormat of this stream
A buffer of Wave samples
creates a new wavebuffer
WaveIn device to write to
Buffer size in bytes
Place this buffer back to record more audio
Finalizer for this wave buffer
Releases resources held by this WaveBuffer
Releases resources held by this WaveBuffer
Provides access to the actual record buffer (for reading only)
Indicates whether the Done flag is set on this buffer
Indicates whether the InQueue flag is set on this buffer
Number of bytes recorded
The buffer size in bytes
WaveStream that can mix together multiple 32 bit input streams
(Normally used with stereo input channels)
All channels must have the same number of inputs
Creates a new 32 bit WaveMixerStream
Creates a new 32 bit WaveMixerStream
An Array of WaveStreams - must all have the same format.
Use WaveChannel is designed for this purpose.
Automatically stop when all inputs have been read
Thrown if the input streams are not 32 bit floating point,
or if they have different formats to each other
Add a new input to the mixer
The wave input to add
Remove a WaveStream from the mixer
waveStream to remove
Reads bytes from this wave stream
buffer to read into
offset into buffer
number of bytes required
Number of bytes read.
Thrown if an invalid number of bytes requested
Actually performs the mixing
Disposes this WaveStream
The number of inputs to this mixer
Automatically stop when all inputs have been read
Length of this Wave Stream (in bytes)
Position within this Wave Stream (in bytes)
Simply shifts the input stream in time, optionally
clipping its start and end.
(n.b. may include looping in the future)
Creates a new WaveOffsetStream
the source stream
the time at which we should start reading from the source stream
amount to trim off the front of the source stream
length of time to play from source stream
Creates a WaveOffsetStream with default settings (no offset or pre-delay,
and whole length of source stream)
The source stream
Reads bytes from this wave stream
The destination buffer
Offset into the destination buffer
Number of bytes read
Number of bytes read.
Determines whether this channel has any data to play
to allow optimisation to not read, but bump position forward
Disposes this WaveStream
The length of time before which no audio will be played
An offset into the source stream from which to start playing
Length of time to read from the source stream
Gets the block alignment for this WaveStream
Returns the stream length
Gets or sets the current position in the stream
A buffer of Wave samples for streaming to a Wave Output device
creates a new wavebuffer
WaveOut device to write to
Buffer size in bytes
Stream to provide more data
Lock to protect WaveOut API's from being called on >1 thread
Finalizer for this wave buffer
Releases resources held by this WaveBuffer
Releases resources held by this WaveBuffer
this is called by the WAVE callback and should be used to refill the buffer
Whether the header's in queue flag is set
The buffer size in bytes
DMO Input Data Buffer Flags
None
DMO_INPUT_DATA_BUFFERF_SYNCPOINT
DMO_INPUT_DATA_BUFFERF_TIME
DMO_INPUT_DATA_BUFFERF_TIMELENGTH
http://msdn.microsoft.com/en-us/library/aa929922.aspx
DMO_MEDIA_TYPE
Gets the structure as a Wave format (if it is one)
Sets this object up to point to a wave format
Wave format structure
Major type
Major type name
Subtype
Subtype name
Fixed size samples
Sample size
Format type
Format type name
DMO Output Data Buffer
Creates a new DMO Output Data Buffer structure
Maximum buffer size
Dispose
Retrives the data in this buffer
Buffer to receive data
Offset into buffer
Media Buffer
Length of data in buffer
Status Flags
Timestamp
Duration
Is more data available
If true, ProcessOuput should be called again
DMO Output Data Buffer Flags
None
DMO_OUTPUT_DATA_BUFFERF_SYNCPOINT
DMO_OUTPUT_DATA_BUFFERF_TIME
DMO_OUTPUT_DATA_BUFFERF_TIMELENGTH
DMO_OUTPUT_DATA_BUFFERF_INCOMPLETE
DMO Process Output Flags
None
DMO_PROCESS_OUTPUT_DISCARD_WHEN_NO_BUFFER
defined in mediaobj.h
From wmcodecsdp.h
Implements:
- IMediaObject
- IMFTransform (Media foundation - we will leave this for now as there is loads of MF stuff)
- IPropertyStore
- IWMResamplerProps
Can resample PCM or IEEE
DMO Resampler
Creates a new Resampler based on the DMO Resampler
Dispose code - experimental at the moment
Was added trying to track down why Resampler crashes NUnit
This code not currently being called by ResamplerDmoStream
Media Object