[FFmpeg-cvslog] hwcontext_dxva2: use the special UC copy for downloading frames

[Anton Khirnov]

ffmpeg | branch: master | Anton Khirnov <anton at khirnov.net> | Wed Aug 24 09:24:49 2016 +0200| [f01f7a7846529b7c3ef343f117eaa2c0a1457af0] | committer: Anton Khirnov

hwcontext_dxva2: use the special UC copy for downloading frames

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f01f7a7846529b7c3ef343f117eaa2c0a1457af0
---

 libavutil/hwcontext_dxva2.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/libavutil/hwcontext_dxva2.c b/libavutil/hwcontext_dxva2.c
index f66c0fa..da89453 100644
--- a/libavutil/hwcontext_dxva2.c
+++ b/libavutil/hwcontext_dxva2.c
@@ -277,8 +277,13 @@ static int dxva2_transfer_data(AVHWFramesContext *ctx, AVFrame *dst,
                            (uint8_t*)LockedRect.pBits, surf_linesize);
 
     if (download) {
-        av_image_copy(dst->data, dst->linesize, surf_data, surf_linesize,
-                      ctx->sw_format, src->width, src->height);
+        ptrdiff_t src_linesize1[4], dst_linesize1[4];
+        for (i = 0; i < 4; i++) {
+            dst_linesize1[i] = dst->linesize[i];
+            src_linesize1[i] = surf_linesize[i];
+        }
+        av_image_copy_uc_from(dst->data, dst_linesize1, surf_data, src_linesize1,
+                              ctx->sw_format, src->width, src->height);
     } else {
         av_image_copy(surf_data, surf_linesize, src->data, src->linesize,
                       ctx->sw_format, src->width, src->height);