/// <returns>Ticks, NO BYTES!</returns>
private long WriteBlock(byte[] buffer, int offset, int count, int streamIndex, long positionInTicks, int sourceBytesPerSecond)
{
int bytesToWrite = count;
using (MFMediaBuffer mfBuffer = new MFMediaBuffer(MediaFoundationCore.CreateMemoryBuffer(bytesToWrite)))
{
using (MFSample sample = new MFSample(MediaFoundationCore.CreateEmptySample()))
{
sample.AddBuffer(mfBuffer);
int currentLength, maxLength;
IntPtr bufferPtr = mfBuffer.Lock(out maxLength, out currentLength);
long ticks = BytesToNanoSeconds(count, sourceBytesPerSecond);
Marshal.Copy(buffer, offset, bufferPtr, count);
mfBuffer.SetCurrentLength(count);
mfBuffer.Unlock();
sample.SetSampleTime(positionInTicks);
sample.SetSampleDuration(ticks);
_sinkWriter.WriteSample(_streamIndex, sample);
return(ticks);
}
}
}
public int Read(byte[] buffer, int offset, int count)
{
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (buffer.Length < count)
{
throw new ArgumentException("Length is too small.", "buffer");
}
lock (_lockObj)
{
int read = 0;
if (_reader == null || _disposed)
{
return(read);
}
if (_decoderBufferCount > 0)
{
read += CopyDecoderBuffer(buffer, offset + read, count - read);
}
while (read < count)
{
MFSourceReaderFlag flags;
long timestamp;
int actualStreamIndex;
using (var sample = _reader.ReadSample(MFInterops.MF_SOURCE_READER_FIRST_AUDIO_STREAM, 0, out actualStreamIndex, out flags, out timestamp))
{
if (flags != MFSourceReaderFlag.None)
{
break;
}
using (MFMediaBuffer mediaBuffer = sample.ConvertToContinousBuffer())
{
int maxlength, currentlength;
IntPtr pdata = mediaBuffer.Lock(out maxlength, out currentlength);
_decoderBuffer = _decoderBuffer.CheckBuffer(currentlength);
Marshal.Copy(pdata, _decoderBuffer, 0, currentlength);
_decoderBufferCount = currentlength;
_decoderBufferOffset = 0;
int tmp = CopyDecoderBuffer(buffer, offset + read, count - read);
read += tmp;
mediaBuffer.Unlock();
}
}
}
_position += read;
return(read);
}
}
/// <returns>Ticks, NO BYTES!</returns>
private long WriteBlock(byte[] buffer, int offset, int count, int streamIndex, long positionInTicks, int sourceBytesPerSecond)
{
int bytesToWrite = count;
using (MFMediaBuffer mfBuffer = new MFMediaBuffer(MediaFoundationCore.CreateMemoryBuffer(bytesToWrite)))
{
using (MFSample sample = new MFSample(MediaFoundationCore.CreateEmptySample()))
{
sample.AddBuffer(mfBuffer);
int currentLength, maxLength;
IntPtr bufferPtr = mfBuffer.Lock(out maxLength, out currentLength);
long ticks = BytesToNanoSeconds(count, sourceBytesPerSecond);
Marshal.Copy(buffer, offset, bufferPtr, count);
mfBuffer.SetCurrentLength(count);
mfBuffer.Unlock();
sample.SetSampleTime(positionInTicks);
sample.SetSampleDuration(ticks);
_sinkWriter.WriteSample(_streamIndex, sample);
return ticks;
}
}
}