private void SetupVideoCompressor(VideoCompressor compressor)
{
Avi32Interop.AVICOMPRESSOPTIONS compressorOptions = new Avi32Interop.AVICOMPRESSOPTIONS();
uint fccHandler = compressor.FccHandler;
compressorOptions.fccType = Avi32Interop.ICTYPE_VIDEO;
compressorOptions.fccHandler = fccHandler;
compressorOptions.dwQuality = (uint)compressor.Quality;
// Open compressor
IntPtr hic = Avi32Interop.ICOpen(Avi32Interop.ICTYPE_VIDEO, fccHandler, Avi32Interop.ICMODE_QUERY);
if (hic == IntPtr.Zero)
{
int errorCode = Marshal.GetLastWin32Error();
throw new AviException(errorCode, string.Format("ICOpen failed, error code = 0x{0:X8}.", errorCode));
}
// Get number of bytes required for params
uint cbParams = (uint)Avi32Interop.ICGetState(hic, IntPtr.Zero, 0);
IntPtr pParams = Marshal.AllocHGlobal((int)cbParams);
try {
// Get params
int retval = Avi32Interop.ICGetState(hic, pParams, cbParams);
compressorOptions.cbParms = cbParams;
// If the Xvid Video Codec is selected, hack params to hide status window!
if (string.Equals(compressor.FccHandlerString, xvidCodec))
{
ModifyXvidParams(pParams, (int)cbParams);
}
compressorOptions.lpParms = pParams;
compressorOptions.dwFlags = Avi32Interop.AVICOMPRESSF_VALID;
// Close compressor
Avi32Interop.ICClose(hic);
// Make compressed stream
int hr = Avi32Interop.AVIMakeCompressedStream(out this.pAviCompressedStream, this.pVideoStream,
ref compressorOptions, 0);
if (hr != 0)
{
throw new AviException(hr, string.Format("AVIMakeCompressedStream failed, error code = 0x{0:X8}.",
hr));
}
}
finally {
if (pParams != IntPtr.Zero)
{
Marshal.FreeHGlobal(pParams);
}
}
}
