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Code Issues Projects Releases Wiki Activity

(WMA): NAudio has been updated, workaround no longer necessary.

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This commit is contained in:
morkt 2017-10-07 00:54:49 +04:00
parent da61e5e3ba
commit 703b097de5
1 changed files with 5 additions and 114 deletions
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119
ArcFormats/AudioWMA.cs
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@ -112,43 +112,25 @@ namespace GameRes.Formats
}
/// <summary>
/// Custom implementation of MediaFoundationReader.
/// NAudio uses MFCreateMFByteStreamOnStreamEx API call which is not available in Windows 7.
/// Custom implementation of StreamMediaFoundationReader.
/// Extends it with Duration property.
/// </summary>
internal class CustomMediaFoundationReader : MediaFoundationReader
internal class CustomMediaFoundationReader : StreamMediaFoundationReader
{
private readonly Stream m_stream;
/// <summary>
/// Specifies the duration of a presentation, in 100-nanosecond units.
/// </summary>
public long Duration { get; private set; }
public CustomMediaFoundationReader (Stream stream, MediaFoundationReaderSettings settings = null)
: base (stream, settings)
{
m_stream = stream;
Init (settings);
}
protected override IMFSourceReader CreateReader (MediaFoundationReaderSettings settings)
{
const int MF_SOURCE_READER_ALL_STREAMS = -2;
const int MF_SOURCE_READER_FIRST_AUDIO_STREAM = -3;
IMFByteStream byteStream;
MFCreateMFByteStreamOnStream (new ComStream (m_stream), out byteStream);
var source_reader = MediaFoundationApi.CreateSourceReaderFromByteStream (byteStream);
source_reader.SetStreamSelection (MF_SOURCE_READER_ALL_STREAMS, false);
source_reader.SetStreamSelection (MF_SOURCE_READER_FIRST_AUDIO_STREAM, true);
source_reader.SetCurrentMediaType (MF_SOURCE_READER_FIRST_AUDIO_STREAM, IntPtr.Zero, new MediaType
{
MajorType = MediaTypes.MFMediaType_Audio,
SubType = settings.RequestFloatOutput ? AudioSubtypes.MFAudioFormat_Float : AudioSubtypes.MFAudioFormat_PCM
}.MediaFoundationObject);
var source_reader = base.CreateReader (settings);
Duration = GetDuration (source_reader);
return source_reader;
}
@ -173,96 +155,5 @@ namespace GameRes.Formats
Marshal.FreeHGlobal (variantPtr);
}
}
[DllImport("mfplat.dll", ExactSpelling = true, PreserveSig = false)]
static extern void MFCreateMFByteStreamOnStream (IStream pStream, out IMFByteStream ppByteStream);
}
/// <summary>
/// Implementation of Com IStream.
/// NAudio implementation is inaccessible (private).
/// </summary>
internal class ComStream : ProxyStream, IStream
{
public ComStream (Stream stream) : base (Synchronized (stream))
{
}
void IStream.Clone (out IStream ppstm)
{
ppstm = null;
}
void IStream.Commit (int grfCommitFlags)
{
Flush();
}
void IStream.CopyTo (IStream pstm, long cb, IntPtr pcbRead, IntPtr pcbWritten)
{
}
void IStream.LockRegion (long libOffset, long cb, int dwLockType)
{
}
void IStream.Read (byte[] pv, int cb, IntPtr pcbRead)
{
if (!CanRead)
throw new InvalidOperationException ("Stream is not readable.");
int read = Read (pv, 0, cb);
if (pcbRead != IntPtr.Zero)
Marshal.WriteInt32 (pcbRead, read);
}
void IStream.Revert()
{
}
void IStream.Seek (long dlibMove, int dwOrigin, IntPtr plibNewPosition)
{
SeekOrigin origin = (SeekOrigin) dwOrigin;
long val = Seek (dlibMove, origin);
if (plibNewPosition != IntPtr.Zero)
Marshal.WriteInt64 (plibNewPosition, val);
}
void IStream.SetSize (long libNewSize)
{
SetLength (libNewSize);
}
void IStream.Stat (out System.Runtime.InteropServices.ComTypes.STATSTG pstatstg, int grfStatFlag)
{
const int STGM_READ = 0x00000000;
const int STGM_WRITE = 0x00000001;
const int STGM_READWRITE = 0x00000002;
var tmp = new System.Runtime.InteropServices.ComTypes.STATSTG { type = 2, cbSize = Length, grfMode = 0 };
if (CanWrite && CanRead)
tmp.grfMode |= STGM_READWRITE;
else if (CanRead)
tmp.grfMode |= STGM_READ;
else if (CanWrite)
tmp.grfMode |= STGM_WRITE;
else
throw new ObjectDisposedException ("Stream");
pstatstg = tmp;
}
void IStream.UnlockRegion (long libOffset, long cb, int dwLockType)
{
}
void IStream.Write (byte[] pv, int cb, IntPtr pcbWritten)
{
if (!CanWrite)
throw new InvalidOperationException ("Stream is not writeable.");
Write (pv, 0, cb);
if (pcbWritten != IntPtr.Zero)
Marshal.WriteInt32 (pcbWritten, cb);
}
}
}