public static int IMOS_XP_SetDecodeVideoMediaDataCB(int port, DecodeVideoDataCallback onDecodeVideoData, bool bContinue)
{
_decVideoCallbacks[port] = onDecodeVideoData;
if (onDecodeVideoData != null)
{
IntPtr userParam = Marshal.GetFunctionPointerForDelegate(onDecodeVideoData);
if (_isX64)
{
return(Native64.IMOS_XP_SetDecodeVideoMediaDataCB((uint)port, _onDecVideoData, bContinue, userParam));
}
else
{
return(Native32.IMOS_XP_SetDecodeVideoMediaDataCB((uint)port, _onDecVideoData, bContinue, userParam));
}
}
else
{
if (_isX64)
{
return(Native64.IMOS_XP_SetDecodeVideoMediaDataCB((uint)port, null, bContinue, IntPtr.Zero));
}
else
{
return(Native32.IMOS_XP_SetDecodeVideoMediaDataCB((uint)port, null, bContinue, IntPtr.Zero));
}
}
}
private static void onDecVideoData(uint ulPort, ref Native32.XP_PICTURE_DATA_S pPictureData, IntPtr lUserParam, IntPtr lReserved)
{
int width = (int)pPictureData.ulPicWidth;
int height = (int)pPictureData.ulPicHeight;
byte[] frame = new byte[width * height * 3 / 2];
int halfWidth = width / 2;
int halfHeight = height / 2;
int destOffset = 0;
IntPtr srcPtr = (IntPtr)pPictureData.pucData[0];
for (int i = 0; i < height; i++)
{
Marshal.Copy(srcPtr, frame, destOffset, width);
destOffset += width;
srcPtr += (int)pPictureData.ulLineSize[0];
}
srcPtr = (IntPtr)pPictureData.pucData[2];
for (int i = 0; i < halfHeight; i++)
{
Marshal.Copy(srcPtr, frame, destOffset, halfWidth);
destOffset += halfWidth;
srcPtr += (int)pPictureData.ulLineSize[2];
}
srcPtr = (IntPtr)pPictureData.pucData[1];
for (int i = 0; i < halfHeight; i++)
{
Marshal.Copy(srcPtr, frame, destOffset, halfWidth);
destOffset += halfWidth;
srcPtr += (int)pPictureData.ulLineSize[1];
}
DecodeVideoDataCallback onDecodeVideoData = (DecodeVideoDataCallback)Marshal.GetDelegateForFunctionPointer(lUserParam, typeof(DecodeVideoDataCallback));
onDecodeVideoData((int)ulPort, width, height, frame, (int)pPictureData.ulRenderTimeType, pPictureData.dlRenderTime);
}
