//This method returns ticks, not bytes!
private long WriteBlock(byte[] buffer, int offset, int count, int streamIndex, long positionInTicks,
int sourceBytesPerSecond)
{
using (var mfBuffer = new MFMediaBuffer(count))
{
using (var sample = new MFSample())
{
sample.AddBuffer(mfBuffer);
using (var @lock = mfBuffer.Lock())
{
Marshal.Copy(buffer, offset, @lock.Buffer, count);
mfBuffer.SetCurrentLength(count);
}
long ticks = BytesToNanoSeconds(count, sourceBytesPerSecond);
sample.SetSampleTime(positionInTicks);
sample.SetSampleDuration(ticks);
_sinkWriter.WriteSample(streamIndex, sample);
return(ticks);
}
}
}
/// <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);
}
}
}
/// <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;
}
}
}
/// <summary>
/// Reads the next sample from the media source.
/// </summary>
/// <returns>HRESULT</returns>
public unsafe int ReadSampleNative(int streamIndex, int controlFlags, out int actualStreamIndex, out MFSourceReaderFlag streamFlags, out long timestamp, out MFSample sample)
{
IntPtr psample = IntPtr.Zero;
fixed(void *ptr0 = &actualStreamIndex, ptr1 = &streamFlags, ptr2 = ×tamp)
{
int result = InteropCalls.CalliMethodPtr(_basePtr, streamIndex, controlFlags, ptr0, ptr1, ptr2, &psample, ((void **)(*(void **)_basePtr))[9]);
sample = psample == IntPtr.Zero ? null : new MFSample(psample);
return(result);
}
}
/// <summary>
/// Reads the next sample from the media source.
/// </summary>
/// <returns>HRESULT</returns>
public unsafe int ReadSampleNative(int streamIndex, int controlFlags, out int actualStreamIndex, out MFSourceReaderFlag streamFlags, out long timestamp, out MFSample sample)
{
IntPtr psample = IntPtr.Zero;
fixed (void* ptr0 = &actualStreamIndex, ptr1 = &streamFlags, ptr2 = ×tamp)
{
int result = InteropCalls.CalliMethodPtr(_basePtr, streamIndex, controlFlags, ptr0, ptr1, ptr2, &psample, ((void**)(*(void**)_basePtr))[9]);
sample = psample == IntPtr.Zero ? null : new MFSample(psample);
return result;
}
}
/// <summary>
/// Reads a sequence of bytes from the <see cref="MediaFoundationDecoder" /> and advances the position within the
/// stream by the
/// number of bytes read.
/// </summary>
/// <param name="buffer">
/// An array of bytes. When this method returns, the <paramref name="buffer" /> contains the specified
/// byte array with the values between <paramref name="offset" /> and (<paramref name="offset" /> +
/// <paramref name="count" /> - 1) replaced by the bytes read from the current source.
/// </param>
/// <param name="offset">
/// The zero-based byte offset in the <paramref name="buffer" /> at which to begin storing the data
/// read from the current stream.
/// </param>
/// <param name="count">The maximum number of bytes to read from the current source.</param>
/// <returns>The total number of bytes read into the buffer.</returns>
public int Read(byte[] buffer, int offset, int count)
{
CheckForDisposed();
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)
{
MFSourceReaderFlags flags;
long timestamp;
int actualStreamIndex;
using (
MFSample sample = _reader.ReadSample(NativeMethods.MF_SOURCE_READER_FIRST_AUDIO_STREAM, 0,
out actualStreamIndex, out flags, out timestamp))
{
if (flags != MFSourceReaderFlags.None)
{
break;
}
var sampleTime = sample.GetSampleTime();
if (_positionChanged && timestamp > 0)
{
long actualPosition = NanoSecond100UnitsToBytes(sampleTime);
int bytesToSkip = (int)(_position - actualPosition);
_position = actualPosition;
_positionChanged = false;
SkipBytes(bytesToSkip);
}
using (MFMediaBuffer mediaBuffer = sample.ConvertToContiguousBuffer())
{
using (MFMediaBuffer.LockDisposable @lock = mediaBuffer.Lock())
{
_decoderBuffer = _decoderBuffer.CheckBuffer(@lock.CurrentLength);
Marshal.Copy(@lock.Buffer, _decoderBuffer, 0, @lock.CurrentLength);
_decoderBufferCount = @lock.CurrentLength;
_decoderBufferOffset = 0;
int tmp = CopyDecoderBuffer(buffer, offset + read, count - read);
read += tmp;
}
}
}
}
_position += read;
return(read);
}
}
//This method returns ticks, not bytes!
private long WriteBlock(byte[] buffer, int offset, int count, int streamIndex, long positionInTicks,
int sourceBytesPerSecond)
{
using (var mfBuffer = new MFMediaBuffer(count))
{
using (var sample = new MFSample())
{
sample.AddBuffer(mfBuffer);
using (var @lock = mfBuffer.Lock())
{
Marshal.Copy(buffer, offset, @lock.Buffer, count);
mfBuffer.SetCurrentLength(count);
}
long ticks = BytesToNanoSeconds(count, sourceBytesPerSecond);
sample.SetSampleTime(positionInTicks);
sample.SetSampleDuration(ticks);
_sinkWriter.WriteSample(streamIndex, sample);
return ticks;
}
}
}
/// <summary>
/// Delivers a sample to the sink writer.
/// </summary>
/// <param name="streamIndex">The zero-based index of the stream for this sample.</param>
/// <param name="sample">The sample to write.</param>
/// <remarks>You must call <see cref="BeginWriting"/> before calling this method.</remarks>
public void WriteSample(int streamIndex, MFSample sample)
{
MediaFoundationException.Try(WriteSampleNative(streamIndex, sample), InterfaceName, "WriteSample");
}
/// <summary>
/// Delivers a sample to the sink writer.
/// <seealso cref="WriteSample"/>
/// </summary>
/// <param name="streamIndex">The zero-based index of the stream for this sample.</param>
/// <param name="sample">The sample to write.</param>
/// <returns>HRESULT</returns>
/// <remarks>You must call <see cref="BeginWriting"/> before calling this method.</remarks>
public unsafe int WriteSampleNative(int streamIndex, MFSample sample)
{
void *ps = (void *)(sample == null ? IntPtr.Zero : sample.BasePtr);
return(InteropCalls.CalliMethodPtr(UnsafeBasePtr, streamIndex, ps, ((void **)(*(void **)UnsafeBasePtr))[6]));
}
/// <summary>
/// Delivers a sample to the sink writer.
/// </summary>
/// <returns>HRESULT</returns>
public unsafe int WriteSampleNative(int streamIndex, MFSample sample)
{
void* ps = (void*)(sample == null ? IntPtr.Zero : sample.BasePtr);
return InteropCalls.CalliMethodPtr(_basePtr, streamIndex, ps, ((void**)(*(void**)_basePtr))[6]);
}
/// <summary>
/// Delivers a sample to the sink writer.
/// </summary>
public void WriteSample(int streamIndex, MFSample sample)
{
MediaFoundationException.Try(WriteSampleNative(streamIndex, sample), c, "WriteSample");
}
