/// <summary>
/// Retrieves the compressed stream from the encoder state that was previously used in one of the encoder functions.<para/>
/// Note: Synchronizes on stream. For async use IntPtr!
/// </summary>
/// <param name="stream">CUDA stream where all the required device operations will be placed.</param>
/// <returns>Byte array containing the data.</returns>
public byte[] RetrieveBitstream(CudaStream stream)
{
SizeT size = new SizeT();
res = NvJpegNativeMethods.nvjpegEncodeRetrieveBitstream(_nvJpeg.Handle, _state, IntPtr.Zero, ref size, stream.Stream);
Debug.WriteLine(String.Format("{0:G}, {1}: {2}", DateTime.Now, "nvjpegEncodeRetrieveBitstream", res));
if (res != nvjpegStatus.Success)
{
throw new NvJpegException(res);
}
byte[] data = new byte[size];
GCHandle handle = GCHandle.Alloc(data, GCHandleType.Pinned);
try
{
IntPtr ptr = handle.AddrOfPinnedObject();
res = NvJpegNativeMethods.nvjpegEncodeRetrieveBitstream(_nvJpeg.Handle, _state, ptr, ref size, stream.Stream);
Debug.WriteLine(String.Format("{0:G}, {1}: {2}", DateTime.Now, "nvjpegEncodeRetrieveBitstream", res));
stream.Synchronize();
}
finally
{
handle.Free();
}
if (res != nvjpegStatus.Success)
{
throw new NvJpegException(res);
}
return(data);
}
/// <summary>
/// Retrieves the compressed stream from the encoder state that was previously used in one of the encoder functions.
/// </summary>
/// <param name="ptr">Pointer to the buffer in the host memory where the compressed stream will be stored. Can be NULL</param>
/// <param name="length">input buffer size.</param>
/// <param name="stream">CUDA stream where all the required device operations will be placed.</param>
/// <returns>On return the NVJPEG library will give the actual compressed stream size in this value.</returns>
public SizeT RetrieveBitstream(IntPtr ptr, SizeT length, CudaStream stream)
{
res = NvJpegNativeMethods.nvjpegEncodeRetrieveBitstream(_nvJpeg.Handle, _state, ptr, ref length, stream.Stream);
Debug.WriteLine(String.Format("{0:G}, {1}: {2}", DateTime.Now, "nvjpegEncodeRetrieveBitstream", res));
if (res != nvjpegStatus.Success)
{
throw new NvJpegException(res);
}
return(length);
}
