private void TestInput()
{
int iCount, iFCount;
IWMInputMediaProps pMP, pMP2;
m_Writer.GetInputCount(out iCount);
m_Writer.GetInputProps(0, out pMP);
m_Writer.GetInputFormatCount(0, out iFCount);
m_Writer.GetInputFormat(0, 0, out pMP2);
m_Writer.SetInputProps(0, pMP);
}
public bool FindVideoInputFormat(uint inputNum, Guid subtype, ref VideoInfoHeader inputVideoInfoHeader, bool enableCompressedSamples)
{
bool success = false;
IWMInputMediaProps writerInputProps = null;
WM_MEDIA_TYPE mediaType;
uint bufferSize = (uint)(Marshal.SizeOf(typeof(WM_MEDIA_TYPE)) + Marshal.SizeOf(typeof(VideoInfoHeader)));
uint formatCount;
Logger.WriteLogMessage("Finding video input formats for writer, input [" + inputNum + "].");
_writer.GetInputFormatCount(inputNum, out formatCount);
Logger.WriteLogMessage("Video writer can consume " + formatCount + " possible video input formats.");
IntPtr buffer = Marshal.AllocCoTaskMem((int)bufferSize);
try
{
for (uint j = 0; j < formatCount; j++)
{
uint size = 0;
try
{
_writer.GetInputFormat(inputNum, j, out writerInputProps);
writerInputProps.GetMediaType(IntPtr.Zero, ref size);
if (size > bufferSize)
{
bufferSize = size;
Marshal.FreeCoTaskMem(buffer);
buffer = Marshal.AllocCoTaskMem((int)bufferSize);
}
writerInputProps.GetMediaType(buffer, ref size);
mediaType = (WM_MEDIA_TYPE)Marshal.PtrToStructure(buffer, typeof(WM_MEDIA_TYPE));
if (mediaType.formattype == FormatTypes.WMFORMAT_VideoInfo)
{
Logger.WriteLogMessage("Found video writer input format [" + j + "], format type [" + GetFormatTypeName(mediaType.formattype) + "], subtype [" + GetSubTypeName(mediaType.subtype) + "], sample size [" + mediaType.lSampleSize + "].");
inputVideoInfoHeader = (VideoInfoHeader)Marshal.PtrToStructure(mediaType.pbFormat, typeof(VideoInfoHeader));
Logger.WriteLogMessage("Found input video stream, width [" + inputVideoInfoHeader.bmiHeader.biWidth + "], height [" + inputVideoInfoHeader.bmiHeader.biHeight + "], bit count [" + inputVideoInfoHeader.bmiHeader.biBitCount + "], image size [" + inputVideoInfoHeader.bmiHeader.biSizeImage + "].");
if (mediaType.subtype == subtype)
{
writerInputProps.SetMediaType(ref mediaType);
if (!enableCompressedSamples)
{
_writer.SetInputProps(inputNum, writerInputProps);
}
else
{
_writer.SetInputProps(inputNum, null);
}
success = true;
break;
}
}
}
catch (Exception)
{
// error handle
throw;
}
finally
{
Marshal.ReleaseComObject(writerInputProps);
writerInputProps = null;
}
}
}
catch (Exception)
{
// error handle
throw;
}
finally
{
Marshal.FreeCoTaskMem(buffer);
}
return(success);
}
