lavc/qsvdec: Add GPU-accelerated memory copy support

GPU copy enables or disables GPU accelerated copying between video
and system memory. This may lead to a notable performance improvement.
Memory must be sequent and aligned with 128x64.

CMD:
ffmpeg -init_hw_device qsv=hw -filter_hw_device hw -c:v h264_qsv
                    -gpu_copy on -i input.h264 -f null -
or:
ffmpeg -c:v h264_qsv -gpu_copy on -i input.h264 -f null -

Signed-off-by: Linjie Fu <linjie.fu@intel.com>
Signed-off-by: ChaoX A Liu <chaox.a.liu@intel.com>
Signed-off-by: Zhong Li <zhong.li@intel.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/libavcodec/qsvdec.h b/libavcodec/qsvdec.h
index 64dc8d2f47..dec1f61ceb 100644
--- a/libavcodec/qsvdec.h
+++ b/libavcodec/qsvdec.h
@@ -59,12 +59,14 @@ typedef struct QSVContext {
     enum AVPixelFormat orig_pix_fmt;
     uint32_t fourcc;
     mfxFrameInfo frame_info;
+    AVBufferPool *pool;
 
     int initialized;
 
     // options set by the caller
     int async_depth;
     int iopattern;
+    int gpu_copy;
 
     char *load_plugins;