public static byte[] GetDataFromMediaSample(IMFSample sample)
{
IMFMediaBuffer pMediaBuffer = null;
IntPtr pBuffer;
int maxLen = 0, curLen = 0;
//HResult hr = sample.LockStore();
HResult hr = sample.ConvertToContiguousBuffer(out pMediaBuffer);
MFError.ThrowExceptionForHR(hr);
try
{
hr = pMediaBuffer.Lock(out pBuffer, out maxLen, out curLen);
MFError.ThrowExceptionForHR(hr);
try
{
byte[] data = new byte[curLen];
Marshal.Copy(pBuffer, data, 0, curLen);
return(data);
}
finally
{
hr = pMediaBuffer.Unlock();
}
}
finally
{
//hr = sample.UnlockStore();
COMBase.SafeRelease(pMediaBuffer);
}
}
// Get the buffers and sizes to be modified, then pass them
// to the transform routine.
private void DoWork(IMFMediaBuffer pIn, IMFMediaBuffer pOut)
{
IntPtr pSrc = IntPtr.Zero;
int lSrcStride = 0;
IMF2DBuffer pIn2D = null;
// Lock the input buffer. Use IMF2DBuffer if available.
Lockit(pIn, out pIn2D, out lSrcStride, out pSrc);
try
{
IntPtr pDest;
int mlo;
int cb;
MFError throwonhr = pOut.Lock(out pDest, out mlo, out cb);
try
{
// Invoke the image transform function.
YUY2_TO_RGB32(pSrc, pDest, m_imageWidthInPixels, m_imageHeightInPixels, lSrcStride);
}
finally
{
pOut.Unlock();
}
}
finally
{
// Ignore error
UnlockIt(pSrc, pIn2D, pIn);
}
}
// Token: 0x06000A59 RID: 2649 RVA: 0x0001E1A8 File Offset: 0x0001C3A8
private IMFSample ReadFromSource()
{
int num = this.sourceProvider.Read(this.sourceBuffer, 0, this.sourceBuffer.Length);
if (num == 0)
{
return(null);
}
IMFMediaBuffer imfmediaBuffer = MediaFoundationApi.CreateMemoryBuffer(num);
IntPtr destination;
int num2;
int num3;
imfmediaBuffer.Lock(out destination, out num2, out num3);
Marshal.Copy(this.sourceBuffer, 0, destination, num);
imfmediaBuffer.Unlock();
imfmediaBuffer.SetCurrentLength(num);
IMFSample imfsample = MediaFoundationApi.CreateSample();
imfsample.AddBuffer(imfmediaBuffer);
imfsample.SetSampleTime(this.inputPosition);
long num4 = MediaFoundationTransform.BytesToNsPosition(num, this.sourceProvider.WaveFormat);
imfsample.SetSampleDuration(num4);
this.inputPosition += num4;
Marshal.ReleaseComObject(imfmediaBuffer);
return(imfsample);
}
// Token: 0x06000945 RID: 2373 RVA: 0x0001B0A0 File Offset: 0x000192A0
private long ConvertOneBuffer(IMFSinkWriter writer, int streamIndex, IWaveProvider inputProvider, long position, byte[] managedBuffer)
{
long num = 0L;
IMFMediaBuffer imfmediaBuffer = MediaFoundationApi.CreateMemoryBuffer(managedBuffer.Length);
int count;
imfmediaBuffer.GetMaxLength(out count);
IMFSample imfsample = MediaFoundationApi.CreateSample();
imfsample.AddBuffer(imfmediaBuffer);
IntPtr destination;
int num2;
imfmediaBuffer.Lock(out destination, out count, out num2);
int num3 = inputProvider.Read(managedBuffer, 0, count);
if (num3 > 0)
{
num = MediaFoundationEncoder.BytesToNsPosition(num3, inputProvider.WaveFormat);
Marshal.Copy(managedBuffer, 0, destination, num3);
imfmediaBuffer.SetCurrentLength(num3);
imfmediaBuffer.Unlock();
imfsample.SetSampleTime(position);
imfsample.SetSampleDuration(num);
writer.WriteSample(streamIndex, imfsample);
}
else
{
imfmediaBuffer.Unlock();
}
Marshal.ReleaseComObject(imfsample);
Marshal.ReleaseComObject(imfmediaBuffer);
return(num);
}
// Get the buffers and sizes to be modified, then pass them
// to the appropriate Update_* routine.
private HResult DoWork(IMFMediaBuffer pIn)
{
MFError throwonhr;
int cb;
IntPtr pSrc; // Source buffer.
int lSrcStride = 0; // Source stride.
bool bLockedInputBuffer = false;
IMF2DBuffer pIn2D;
// While there are exceptions thrown here, they should never happen
// in real life.
// Lock the input buffer. Use IMF2DBuffer if available.
pIn2D = pIn as IMF2DBuffer;
if (pIn2D != null)
{
throwonhr = pIn2D.Lock2D(out pSrc, out lSrcStride);
}
else
{
int ml;
throwonhr = pIn.Lock(out pSrc, out ml, out cb);
lSrcStride = m_lStrideIfContiguous;
}
bLockedInputBuffer = true;
// Invoke the image transform function.
if (m_pTransformFn != null)
{
m_pTransformFn(pSrc, lSrcStride,
m_imageWidthInPixels, m_imageHeightInPixels);
}
else
{
return(HResult.E_UNEXPECTED);
}
if (bLockedInputBuffer)
{
if (pIn2D != null)
{
throwonhr = pIn2D.Unlock2D();
}
else
{
throwonhr = pIn.Unlock();
}
}
// Set the data size on the output buffer.
throwonhr = pIn.SetCurrentLength(m_cbImageSize);
return(HResult.S_OK);
}
private long ConvertOneBuffer(IMFSinkWriter writer, int streamIndex, IWaveProvider inputProvider, long position, byte[] managedBuffer, int seconds, ref bool flag)
{
long durationConverted = 0;
int maxLength;
IMFMediaBuffer buffer = MediaFoundationApi.CreateMemoryBuffer(managedBuffer.Length);
buffer.GetMaxLength(out maxLength);
IMFSample sample = MediaFoundationApi.CreateSample();
sample.AddBuffer(buffer);
IntPtr ptr;
int currentLength;
buffer.Lock(out ptr, out maxLength, out currentLength);
int oneLength = inputProvider.WaveFormat.AverageBytesPerSecond;
int read = 0;
if (flag)
{
for (int i = 0; i < seconds; i++)
{
read = inputProvider.Read(managedBuffer, 0, oneLength);
}
flag = false;
}
else
{
read = inputProvider.Read(managedBuffer, 0, oneLength);
}
if (read > 0)
{
durationConverted = BytesToNsPosition(read, inputProvider.WaveFormat);
Marshal.Copy(managedBuffer, 0, ptr, read);
buffer.SetCurrentLength(read);
buffer.Unlock();
sample.SetSampleTime(position);
sample.SetSampleDuration(durationConverted);
writer.WriteSample(streamIndex, sample);
//writer.Flush(streamIndex);
}
else
{
buffer.Unlock();
}
Marshal.ReleaseComObject(sample);
Marshal.ReleaseComObject(buffer);
return(durationConverted);
}
//-------------------------------------------------------------------
// LockBuffer
//
// Locks the buffer. Returns a pointer to scan line 0 and returns the stride.
//
// The caller must provide the default stride as an input parameter, in case
// the buffer does not expose IMF2DBuffer. You can calculate the default stride
// from the media type.
//-------------------------------------------------------------------
public int LockBuffer(
int lDefaultStride, // Minimum stride (with no padding).
int dwHeightInPixels, // Height of the image, in pixels.
out IntPtr ppbScanLine0, // Receives a pointer to the start of scan line 0.
out int plStride // Receives the actual stride.
)
{
int hr;
ppbScanLine0 = IntPtr.Zero;
plStride = 0;
// Use the 2-D version if available.
if (p2DBuffer != null)
{
hr = p2DBuffer.Lock2D(out ppbScanLine0, out plStride);
}
else
{
// Use non-2D version.
IntPtr pData;
int pcbMaxLength;
int pcbCurrentLength;
hr = pBuffer.Lock(out pData, out pcbMaxLength, out pcbCurrentLength);
if (Succeeded(hr))
{
plStride = lDefaultStride;
if (lDefaultStride < 0)
{
// Bottom-up orientation. Return a pointer to the start of the
// last row *in memory* which is the top row of the image.
ppbScanLine0 += lDefaultStride * (dwHeightInPixels - 1);
}
else
{
// Top-down orientation. Return a pointer to the start of the
// buffer.
ppbScanLine0 = pData;
}
}
}
bLocked = (Succeeded(hr));
return(hr);
}
private void Lockit(IMFMediaBuffer pOut, out IMF2DBuffer pOut2D, out int lDestStride, out IntPtr pDest)
{
MFError throwonhr;
pOut2D = pOut as IMF2DBuffer;
if (pOut2D != null)
{
throwonhr = pOut2D.Lock2D(out pDest, out lDestStride);
}
else
{
int ml;
int cb;
throwonhr = pOut.Lock(out pDest, out ml, out cb);
lDestStride = m_lStrideIfContiguous;
}
}
/// <summary>
/// Gives the caller access to the memory in the value, for reading or writing.
/// </summary>
/// <param name="mediaBuffer">A valid IMFMediaBuffer instance.</param>
/// <param name="streamIndex">Receives a memory streamIndex that wrap the media value memory.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
/// <remarks>The media value must be unlocked with IMFMediaBuffer.Unlock.</remarks>
public static HResult Lock(this IMFMediaBuffer mediaBuffer, out UnmanagedMemoryStream stream)
{
if (mediaBuffer == null)
{
throw new ArgumentNullException("mediaBuffer");
}
stream = null;
IntPtr bufferPtr;
int maxLength, currentLength;
HResult hr = mediaBuffer.Lock(out bufferPtr, out maxLength, out currentLength);
if (hr.Succeeded())
{
unsafe
{
stream = new UnmanagedMemoryStream((byte *)bufferPtr, currentLength, maxLength, FileAccess.ReadWrite);
}
}
return(hr);
}
/////////////////////////////////////////////////////////////////////
// Name: ReadDataIntoBuffer
//
// Reads data from a byte stream and returns a media buffer that
// contains the data.
//
// pStream: Pointer to the byte stream
// cbToRead: Number of bytes to read
// ppBuffer: Receives a pointer to the buffer.
/////////////////////////////////////////////////////////////////////
void ReadDataIntoBuffer(
IMFByteStream pStream, // Pointer to the byte stream.
int cbToRead, // Number of bytes to read
out IMFMediaBuffer ppBuffer // Receives a pointer to the buffer.
)
{
HResult hr;
IntPtr pData;
int cbRead; // Actual amount of data read
int iMax, iCur;
// Create the media buffer. This function allocates the memory.
hr = MFExtern.MFCreateMemoryBuffer(cbToRead, out ppBuffer);
MFError.ThrowExceptionForHR(hr);
// Access the buffer.
hr = ppBuffer.Lock(out pData, out iMax, out iCur);
MFError.ThrowExceptionForHR(hr);
try
{
// Read the data from the byte stream.
hr = pStream.Read(pData, cbToRead, out cbRead);
MFError.ThrowExceptionForHR(hr);
}
finally
{
hr = ppBuffer.Unlock();
MFError.ThrowExceptionForHR(hr);
pData = IntPtr.Zero;
}
// Update the size of the valid data.
hr = ppBuffer.SetCurrentLength(cbRead);
MFError.ThrowExceptionForHR(hr);
}
/// <summary>Generates the "tail" of the audio effect.</summary>
/// <param name="InputMessageNumber">Message number to use with OutputSample.</param>
/// <remarks>
/// Generates the "tail" of the audio effect. The tail is the portion
/// of the delay effect that is heard after the input stream ends.
///
/// To generate the tail, the client must drain the MFT by sending
/// the MFT_MESSAGE_COMMAND_DRAIN message and then call ProcessOutput
/// to get the tail samples.
/// </remarks>
private void ProcessEffectTail(int InputMessageNumber)
{
IMFMediaBuffer pOutputBuffer = null;
MFError throwonhr;
IntPtr pbOutputData = IntPtr.Zero; // Pointer to the memory in the output buffer.
int cbOutputLength = 0; // Size of the output buffer.
int cbBytesProcessed = 0; // How much data we processed.
IMFSample pOutSample = null;
// Allocate an output buffer.
throwonhr = MFExtern.MFCreateMemoryBuffer(m_cbTailSamples, out pOutputBuffer);
try
{
throwonhr = MFExtern.MFCreateSample(out pOutSample);
throwonhr = pOutSample.AddBuffer(pOutputBuffer);
// Lock the output buffer.
int cb;
throwonhr = pOutputBuffer.Lock(out pbOutputData, out cbOutputLength, out cb);
// Calculate how many audio samples we can process.
cbBytesProcessed = Math.Min(m_cbTailSamples, cbOutputLength);
// Round to the next lowest multiple of nBlockAlign.
cbBytesProcessed -= (cbBytesProcessed % m_Alignment);
// Fill the output buffer with silence, because we are also using it as the input buffer.
FillBufferWithSilence(pbOutputData, cbBytesProcessed);
// Process the data.
ProcessAudio(pbOutputData, pbOutputData, cbBytesProcessed / m_Alignment);
// Set the data length on the output buffer.
throwonhr = pOutputBuffer.SetCurrentLength(cbBytesProcessed);
if (m_rtTimestamp >= 0)
{
long hnsDuration = (cbBytesProcessed / m_AvgBytesPerSec) * UNITS;
// Set the time stamp and duration on the output sample.
throwonhr = pOutSample.SetSampleTime(m_rtTimestamp);
throwonhr = pOutSample.SetSampleDuration(hnsDuration);
}
// Done.
m_cbTailSamples = 0;
OutputSample(pOutSample, InputMessageNumber);
}
catch
{
SafeRelease(pOutSample);
throw;
}
finally
{
if (pbOutputData != IntPtr.Zero)
{
pOutputBuffer.Unlock();
}
SafeRelease(pOutputBuffer);
}
}
/////////////////////////////////////////////////////////////////////
// Name: ReadDataIntoBuffer
//
// Reads data from a byte stream and returns a media buffer that
// contains the data.
//
// pStream: Pointer to the byte stream
// cbToRead: Number of bytes to read
// ppBuffer: Receives a pointer to the buffer.
/////////////////////////////////////////////////////////////////////
void ReadDataIntoBuffer(
IMFByteStream pStream, // Pointer to the byte stream.
int cbToRead, // Number of bytes to read
out IMFMediaBuffer ppBuffer // Receives a pointer to the buffer.
)
{
IntPtr pData;
int cbRead; // Actual amount of data read
int iMax, iCur;
// Create the media buffer. This function allocates the memory.
int hr = MFExtern.MFCreateMemoryBuffer(cbToRead, out ppBuffer);
MFError.ThrowExceptionForHR(hr);
// Access the buffer.
hr = ppBuffer.Lock(out pData, out iMax, out iCur);
MFError.ThrowExceptionForHR(hr);
try
{
// Read the data from the byte stream.
hr = pStream.Read(pData, cbToRead, out cbRead);
MFError.ThrowExceptionForHR(hr);
}
finally
{
hr = ppBuffer.Unlock();
MFError.ThrowExceptionForHR(hr);
pData = IntPtr.Zero;
}
// Update the size of the valid data.
hr = ppBuffer.SetCurrentLength(cbRead);
MFError.ThrowExceptionForHR(hr);
}