added: workaround for different handling of scaling lists for ATI cards

2 files changed, 13 insertions, 2 deletions

diff --git a/lib/ffmpeg/libavcodec/avcodec.h b/lib/ffmpeg/libavcodec/avcodec.h
index 4745980fd1..cb96c6fb66 100644
--- a/lib/ffmpeg/libavcodec/avcodec.h
+++ b/lib/ffmpeg/libavcodec/avcodec.h
@@ -1429,6 +1429,7 @@ typedef struct AVCodecContext {
 #define FF_BUG_DC_CLIP          4096
 #define FF_BUG_MS               8192 ///< Work around various bugs in Microsoft's broken decoders.
 #define FF_BUG_TRUNCATED       16384
+#define FF_BUG_DXVA2_SCALING_LIST_ZIGZAG 32768 ///< Work around for DXVA2 and old UVD/UVD+ ATI video cards
 //#define FF_BUG_FAKE_SCALABILITY 16 //Autodetection should work 100%.
 
     /**
diff --git a/lib/ffmpeg/libavcodec/dxva2_h264.c b/lib/ffmpeg/libavcodec/dxva2_h264.c
index 17fb2b55c3..7b81c8e03b 100644
--- a/lib/ffmpeg/libavcodec/dxva2_h264.c
+++ b/lib/ffmpeg/libavcodec/dxva2_h264.c
@@ -150,10 +150,19 @@ static void fill_picture_parameters(struct dxva_context *ctx, const H264Context
     //pp->SliceGroupMap[810];               /* XXX not implemented by FFmpeg */
 }
 
-static void fill_scaling_lists(const H264Context *h, DXVA_Qmatrix_H264 *qm)
+static void fill_scaling_lists(AVCodecContext *avctx, const H264Context *h, DXVA_Qmatrix_H264 *qm)
 {
     unsigned i, j;
     memset(qm, 0, sizeof(*qm));
+    if (avctx->workaround_bugs & FF_BUG_DXVA2_SCALING_LIST_ZIGZAG) {  // For old UVD/UVD+ ATI cards
+    for (i = 0; i < 6; i++)
+        for (j = 0; j < 16; j++)
+            qm->bScalingLists4x4[i][j] = h->pps.scaling_matrix4[i][j];
+
+    for (i = 0; i < 2; i++)
+        for (j = 0; j < 64; j++)
+            qm->bScalingLists8x8[i][j] = h->pps.scaling_matrix8[i][j];
+    } else {
     for (i = 0; i < 6; i++)
         for (j = 0; j < 16; j++)
             qm->bScalingLists4x4[i][j] = h->pps.scaling_matrix4[i][zigzag_scan[j]];
@@ -161,6 +170,7 @@ static void fill_scaling_lists(const H264Context *h, DXVA_Qmatrix_H264 *qm)
     for (i = 0; i < 2; i++)
         for (j = 0; j < 64; j++)
             qm->bScalingLists8x8[i][j] = h->pps.scaling_matrix8[i][ff_zigzag_direct[j]];
+    }
 }
 
 static int is_slice_short(struct dxva_context *ctx)
@@ -370,7 +380,7 @@ static int start_frame(AVCodecContext *avctx,
     fill_picture_parameters(ctx, h, &ctx_pic->pp);
 
     /* Fill up DXVA_Qmatrix_H264 */
-    fill_scaling_lists(h, &ctx_pic->qm);
+    fill_scaling_lists(avctx, h, &ctx_pic->qm);
 
     ctx_pic->slice_count    = 0;
     ctx_pic->bitstream_size = 0;