internal LockDisposable(MFMediaBuffer mediaBuffer, IntPtr buffer, int maxLength, int currentLength)
{
_mediaBuffer = mediaBuffer;
Buffer = buffer;
MaxLength = maxLength;
CurrentLength = currentLength;
}
/// <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);
}
}
}
//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);
}
}
}
public unsafe int ConvertToContinousBufferNative(out MFMediaBuffer buffer)
{
IntPtr ptr = IntPtr.Zero;
int result = InteropCalls.CalliMethodPtr(_basePtr, &ptr, ((void**)(*(void**)_basePtr))[41]);
buffer = ptr == IntPtr.Zero ? null : new MFMediaBuffer(ptr);
return result;
}
public unsafe int GetBufferByIndexNative(int index, out MFMediaBuffer buffer)
{
IntPtr ptr = IntPtr.Zero;
int result = InteropCalls.CalliMethodPtr(_basePtr, index, &ptr, ((void**)(*(void**)_basePtr))[40]);
buffer = ptr == IntPtr.Zero ? null : new MFMediaBuffer(ptr);
return result;
}
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);
}
}
/// <summary>
/// Converts a sample with multiple buffers into a sample with a single buffer.
/// </summary>
/// <param name="buffer">Receives a <see cref="MFMediaBuffer"/> instance. The caller must release the instance.</param>
/// <returns>HRESULT</returns>
public unsafe int ConvertToContiguousBufferNative(out MFMediaBuffer buffer)
{
IntPtr ptr = IntPtr.Zero;
int result = InteropCalls.CalliMethodPtr(UnsafeBasePtr, &ptr, ((void **)(*(void **)UnsafeBasePtr))[41]);
buffer = ptr == IntPtr.Zero ? null : new MFMediaBuffer(ptr);
return(result);
}
/// <summary>
/// Gets a buffer from the sample, by index.
/// </summary>
/// <param name="index">Index of the buffer. To find the number of buffers in the sample, call <see cref="GetBufferCount"/>. Buffers are indexed from zero. </param>
/// <param name="buffer">Receives the <see cref="MFMediaBuffer"/> instance. The caller must release the object. </param>
/// <returns>HRESULT</returns>
/// <remarks>
/// Note: In most cases, it is safer to use the <see cref="ConvertToContiguousBuffer"/> method.
/// If the sample contains more than one buffer, the <see cref="ConvertToContiguousBuffer"/> method replaces them with a single buffer, copies the original data into that buffer, and returns the new buffer to the caller.
/// The copy operation occurs at most once. On subsequent calls, no data is copied.
/// </remarks>
public unsafe int GetBufferByIndexNative(int index, out MFMediaBuffer buffer)
{
IntPtr ptr = IntPtr.Zero;
int result = InteropCalls.CalliMethodPtr(UnsafeBasePtr, index, &ptr, ((void **)(*(void **)UnsafeBasePtr))[40]);
buffer = ptr == IntPtr.Zero ? null : new MFMediaBuffer(ptr);
return(result);
}
public void AddBuffer(MFMediaBuffer buffer)
{
MediaFoundationException.Try(AddBufferNative(buffer), c, "AddBuffer");
}
/// <summary>
/// Adds a buffer to the end of the list of buffers in the sample.
/// </summary>
/// <param name="buffer">The <see cref="MFMediaBuffer"/> to add.</param>
/// <returns>HRESULT</returns>
public unsafe int AddBufferNative(MFMediaBuffer buffer)
{
return InteropCalls.CalliMethodPtr(UnsafeBasePtr, (void*)((buffer == null) ? IntPtr.Zero : buffer.BasePtr), ((void**)(*(void**)UnsafeBasePtr))[42]);
}
/// <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;
}
}
}
internal LockDisposable(MFMediaBuffer mediaBuffer, IntPtr buffer, int maxLength, int currentLength)
{
_mediaBuffer = mediaBuffer;
Buffer = buffer;
MaxLength = maxLength;
CurrentLength = currentLength;
}
public unsafe int CopyToBufferNative(MFMediaBuffer buffer)
{
return InteropCalls.CalliMethodPtr(_basePtr, (void*)((buffer == null) ? IntPtr.Zero : buffer.BasePtr), ((void**)(*(void**)_basePtr))[46]);
}
/// <summary>
/// Copies the sample data to a buffer. This method concatenates the valid data from all of the buffers of the sample, in order.
/// </summary>
/// <param name="buffer">The <see cref="MFMediaBuffer"/> object of the destination buffer.
/// The buffer must be large enough to hold the valid data in the sample.
/// To get the size of the data in the sample, call <see cref="GetTotalLength"/>.</param>
public void CopyToBuffer(MFMediaBuffer buffer)
{
MediaFoundationException.Try(CopyToBufferNative(buffer), InterfaceName, "CopyToBuffer");
}
/// <summary>
/// Copies the sample data to a buffer. This method concatenates the valid data from all of the buffers of the sample, in order.
/// </summary>
/// <param name="buffer">The <see cref="MFMediaBuffer"/> object of the destination buffer.
/// The buffer must be large enough to hold the valid data in the sample.
/// To get the size of the data in the sample, call <see cref="GetTotalLength"/>.</param>
/// <returns>HRESULT</returns>
public unsafe int CopyToBufferNative(MFMediaBuffer buffer)
{
return(InteropCalls.CalliMethodPtr(UnsafeBasePtr, (void *)((buffer == null) ? IntPtr.Zero : buffer.BasePtr), ((void **)(*(void **)UnsafeBasePtr))[46]));
}
/// <summary>
/// Adds a buffer to the end of the list of buffers in the sample.
/// </summary>
/// <param name="buffer">The <see cref="MFMediaBuffer"/> to add.</param>
public void AddBuffer(MFMediaBuffer buffer)
{
MediaFoundationException.Try(AddBufferNative(buffer), InterfaceName, "AddBuffer");
}
public void CopyToBuffer(MFMediaBuffer buffer)
{
MediaFoundationException.Try(CopyToBufferNative(buffer), c, "CopyToBuffer");
}
//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>
/// 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);
}
}
public unsafe int AddBufferNative(MFMediaBuffer buffer)
{
return(InteropCalls.CalliMethodPtr(_basePtr, (void *)((buffer == null) ? IntPtr.Zero : buffer.BasePtr), ((void **)(*(void **)_basePtr))[42]));
}
