avio: Fix sanity checks in ffurl_read*

[ffmpeg] / libavcodec / vp8.c

diff --git a/libavcodec/vp8.c b/libavcodec/vp8.c
index 566ec65380d7d114373e1ad6dc8e27050cf6740d..de4a51d19564cc39bb6b7cfddd6452a5de86d07c 100644 (file)
--- a/libavcodec/vp8.c
+++ b/libavcodec/vp8.c
@@ -5,20 +5,20 @@
  * Copyright (C) 2010 Ronald S. Bultje
  * Copyright (C) 2010 Jason Garrett-Glaser
  *
- * This file is part of FFmpeg.
+ * This file is part of Libav.
  *
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
@@ -471,17 +471,16 @@ void decode_mvs(VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y)
                                   mb - 1 /* left */,
                                   mb + 1 /* top-left */ };
     enum { CNT_ZERO, CNT_NEAREST, CNT_NEAR, CNT_SPLITMV };
-    enum { EDGE_TOP, EDGE_LEFT, EDGE_TOPLEFT };
+    enum { VP8_EDGE_TOP, VP8_EDGE_LEFT, VP8_EDGE_TOPLEFT };
     int idx = CNT_ZERO;
     int cur_sign_bias = s->sign_bias[mb->ref_frame];
-    int *sign_bias = s->sign_bias;
+    int8_t *sign_bias = s->sign_bias;
     VP56mv near_mv[4];
     uint8_t cnt[4] = { 0 };
     VP56RangeCoder *c = &s->c;
 
     AV_ZERO32(&near_mv[0]);
     AV_ZERO32(&near_mv[1]);
-    AV_ZERO32(&near_mv[2]);
 
     /* Process MB on top, left and top-left */
     #define MV_EDGE_CHECK(n)\
@@ -513,7 +512,7 @@ void decode_mvs(VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y)
         mb->mode = VP8_MVMODE_MV;
 
         /* If we have three distinct MVs, merge first and last if they're the same */
-        if (cnt[CNT_SPLITMV] && AV_RN32A(&near_mv[1+EDGE_TOP]) == AV_RN32A(&near_mv[1+EDGE_TOPLEFT]))
+        if (cnt[CNT_SPLITMV] && AV_RN32A(&near_mv[1 + VP8_EDGE_TOP]) == AV_RN32A(&near_mv[1 + VP8_EDGE_TOPLEFT]))
             cnt[CNT_NEAREST] += 1;
 
         /* Swap near and nearest if necessary */
@@ -527,9 +526,9 @@ void decode_mvs(VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y)
 
                 /* Choose the best mv out of 0,0 and the nearest mv */
                 clamp_mv(s, &mb->mv, &near_mv[CNT_ZERO + (cnt[CNT_NEAREST] >= cnt[CNT_ZERO])]);
-                cnt[CNT_SPLITMV] = ((mb_edge[EDGE_LEFT]->mode    == VP8_MVMODE_SPLIT) +
-                                    (mb_edge[EDGE_TOP]->mode     == VP8_MVMODE_SPLIT)) * 2 +
-                                    (mb_edge[EDGE_TOPLEFT]->mode == VP8_MVMODE_SPLIT);
+                cnt[CNT_SPLITMV] = ((mb_edge[VP8_EDGE_LEFT]->mode    == VP8_MVMODE_SPLIT) +
+                                    (mb_edge[VP8_EDGE_TOP]->mode     == VP8_MVMODE_SPLIT)) * 2 +
+                                    (mb_edge[VP8_EDGE_TOPLEFT]->mode == VP8_MVMODE_SPLIT);
 
                 if (vp56_rac_get_prob_branchy(c, vp8_mode_contexts[cnt[CNT_SPLITMV]][3])) {
                     mb->mode = VP8_MVMODE_SPLIT;
@@ -641,7 +640,7 @@ void decode_mb_mode(VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y, uint8_
  *         otherwise, the index of the last coeff decoded plus one
  */
 static int decode_block_coeffs_internal(VP56RangeCoder *c, DCTELEM block[16],
-                                        uint8_t probs[8][3][NUM_DCT_TOKENS-1],
+                                        uint8_t probs[16][3][NUM_DCT_TOKENS-1],
                                         int i, uint8_t *token_prob, int16_t qmul[2])
 {
     goto skip_eob;
@@ -696,7 +695,7 @@ skip_eob:
 
 static av_always_inline
 int decode_block_coeffs(VP56RangeCoder *c, DCTELEM block[16],
-                        uint8_t probs[8][3][NUM_DCT_TOKENS-1],
+                        uint8_t probs[16][3][NUM_DCT_TOKENS-1],
                         int i, int zero_nhood, int16_t qmul[2])
 {
     uint8_t *token_prob = probs[i][zero_nhood];
@@ -1283,7 +1282,7 @@ static av_always_inline void idct_mb(VP8Context *s, uint8_t *dst[3], VP8Macroblo
                             s->vp8dsp.vp8_idct_add(ch_dst+4*x, s->block[4+ch][(y<<1)+x], s->uvlinesize);
                         nnz4 >>= 8;
                         if (!nnz4)
-                            break;
+                            goto chroma_idct_end;
                     }
                     ch_dst += 4*s->uvlinesize;
                 }
@@ -1291,6 +1290,7 @@ static av_always_inline void idct_mb(VP8Context *s, uint8_t *dst[3], VP8Macroblo
                 s->vp8dsp.vp8_idct_dc_add4uv(ch_dst, s->block[4+ch], s->uvlinesize);
             }
         }
+chroma_idct_end: ;
     }
 }