Merge remote-tracking branch 'qatar/master'

[ffmpeg] / libavcodec / vp3.c

diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c
index 0137253e64dbff25e6d85423eeeeb6bcea9b1639..738ae9fd258d9afba32ff7a07b5ed26dc856c26b 100644 (file)
--- a/libavcodec/vp3.c
+++ b/libavcodec/vp3.c
@@ -1378,6 +1378,8 @@ static inline int vp3_dequant(Vp3DecodeContext *s, Vp3Fragment *frag,
             return i;
         }
     } while (i < 64);
+    // return value is expected to be a valid level
+    i--;
 end:
     // the actual DC+prediction is in the fragment structure
     block[0] = frag->dc * s->qmat[0][inter][plane][0];
@@ -1570,10 +1572,7 @@ static void render_slice(Vp3DecodeContext *s, int slice)
                     /* invert DCT and place (or add) in final output */
 
                     if (s->all_fragments[i].coding_method == MODE_INTRA) {
-                        int index;
-                        index = vp3_dequant(s, s->all_fragments + i, plane, 0, block);
-                        if (index > 63)
-                            continue;
+                        vp3_dequant(s, s->all_fragments + i, plane, 0, block);
                         if(s->avctx->idct_algo!=FF_IDCT_VP3)
                             block[0] += 128<<3;
                         s->dsp.idct_put(
@@ -1581,10 +1580,7 @@ static void render_slice(Vp3DecodeContext *s, int slice)
                             stride,
                             block);
                     } else {
-                        int index = vp3_dequant(s, s->all_fragments + i, plane, 1, block);
-                        if (index > 63)
-                            continue;
-                        if (index > 0) {
+                        if (vp3_dequant(s, s->all_fragments + i, plane, 1, block)) {
                         s->dsp.idct_add(
                             output_plane + first_pixel,
                             stride,
@@ -2060,8 +2056,6 @@ error:
     return -1;
 }
 
-static void vp3_decode_flush(AVCodecContext *avctx);
-
 static int read_huffman_tree(AVCodecContext *avctx, GetBitContext *gb)
 {
     Vp3DecodeContext *s = avctx->priv_data;