NAudio.Win8
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
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 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
Peak Values
Hardware Support
Master Peak Value
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
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.
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
AUDCLNT_E_NOT_INITIALIZED
AUDCLNT_E_UNSUPPORTED_FORMAT
AUDCLNT_E_DEVICE_IN_USE
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 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.
defined in MMDeviceAPI.h
IMMNotificationClient
Device State Changed
Device Added
Device Removed
Default Device Changed
Property Value Changed
is defined in propsys.h
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.
implements IMMDeviceEnumerator
MMDevice STGM enumeration
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
Multimedia Device Collection
Get Enumerator
Device enumerator
Device count
Get device by index
Device index
Device at the specified index
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
PROPERTYKEY is defined in wtypes.h
Format ID
Property ID
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
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
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).
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
Windows Media Resampler Props
wmcodecdsp.h
Range is 1 to 60
Specifies the channel matrix.
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
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
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
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)
Channel Mode
Stereo
Joint Stereo
Dual Channel
Mono
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
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
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
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 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
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
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.
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;
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.
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.
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;
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.
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
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.
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.
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.
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.
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
Main interface for using Media Foundation with NAudio
initializes MediaFoundation - only needs to be called once per process
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.
Creates an empty media sample.
Allocates system memory and creates a media buffer to manage it.
Creates an empty attribute store.
An abstract base class for simplifying working with Media Foundation Transforms
You need to override the method that actually creates and configures the transform
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.
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
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
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
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.
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.
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 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.
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.
Helper methods for working with audio buffers
Ensures the buffer is big enough
Ensures the buffer is big enough
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.
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
Allows us to add descriptions to interop members
Field description
String representation
The description
Helper to get descriptions
Describes the Guid by looking for a FieldDescription attribute on the specified class
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
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.
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
General purpose native methods for internal NAudio use
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.
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
Sample Provider to allow fading in and out
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 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
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)
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
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
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.
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
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 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
Converts an IWaveProvider containing 16 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 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 32 bit PCM to an
ISampleProvider
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
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
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)
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
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)
Converts a sample provider to 16 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
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
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 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
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
Microsoft ADPCM
See http://icculus.org/SDL_sound/downloads/external_documentation/wavecomp.htm
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
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
GSM 610
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
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
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.
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.
Playback State
Stopped
Playing
Paused
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
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.
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
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
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
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 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
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
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 stream that lets us read from compressed audio files with large block alignment
as though we could read any amount and reposition anywhere
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)
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
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.
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
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
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
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
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
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
Way of enumerating all the audio capture devices available on the system
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
Dispose
Indicates recorded data is available
Indicates that all recorded data has now been received.
Recording wave format
Represents the interface to a device that can play audio
Begin playback
Stop playback
Pause Playback
Obsolete init method
Initialise playback
Function to create the waveprovider to be played
Called on the playback thread
Current playback state
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
WASAPI Out for Windows RT
WASAPI Out using default audio endpoint
ShareMode - shared or exclusive
Desired latency in milliseconds
Creates a new WASAPI Output
Device to use
Properties of the client's audio stream.
Set before calling init
Sets the parameters that describe the properties of the client's 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.
Begin Playback
Stop playback and flush buffers
Stop playback without flushing buffers
Old init implementation. Use the func one
Initializes with a function to create the provider that is made on the playback thread
Creates the wave provider
Initialize for playing the specified wave stream
Dispose
Playback Stopped
Playback State
Come useful native methods for Windows 8 support
Enables Windows Store apps to access preexisting Component Object Model (COM) interfaces in the WASAPI family.
A device interface ID for an audio device. This is normally retrieved from a DeviceInformation object or one of the methods of the MediaDevice class.
The IID of a COM interface in the WASAPI family, such as IAudioClient.
Interface-specific activation parameters. For more information, see the pActivationParams parameter in IMMDevice::Activate.
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.