Merge remote-tracking branch 'qatar/master'

* qatar/master:
  vp6: partially propagate huffman tree building errors during coeff model parsing and fix misspelling
  mpeg12: propagate chunk decode errors and fix conditional indentation
  vc1: fix VC-1 Pulldown handling.
  VC1: Fix first/last row checks with slices
  mp4: Handle non-trivial ES Descriptors.
  vc1: properly zero coded_block[] edges on new slice entry.

Conflicts:
	libavcodec/vc1dec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

5 files changed, 65 insertions, 20 deletions

diff --git a/libavcodec/mpeg12.c b/libavcodec/mpeg12.c
index 3d9935b203..069cd000a3 100644
--- a/libavcodec/mpeg12.c
+++ b/libavcodec/mpeg12.c
@@ -1948,6 +1948,8 @@ static int slice_decode_thread(AVCodecContext *c, void *arg){
 //av_log(c, AV_LOG_DEBUG, "ret:%d resync:%d/%d mb:%d/%d ts:%d/%d ec:%d\n",
 //ret, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, s->start_mb_y, s->end_mb_y, s->error_count);
         if(ret < 0){
+            if (c->error_recognition >= FF_ER_EXPLODE)
+                return AVERROR_INVALIDDATA;
             if(s->resync_mb_x>=0 && s->resync_mb_y>=0)
                 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, AC_ERROR|DC_ERROR|MV_ERROR);
         }else{
@@ -2301,8 +2303,10 @@ static int mpeg_decode_frame(AVCodecContext *avctx,
 
     s->slice_count= 0;
 
-    if(avctx->extradata && !avctx->frame_number)
-        decode_chunks(avctx, picture, data_size, avctx->extradata, avctx->extradata_size);
+    if(avctx->extradata && !avctx->frame_number &&
+       decode_chunks(avctx, picture, data_size, avctx->extradata, avctx->extradata_size) < 0 &&
+       avctx->error_recognition >= FF_ER_EXPLODE)
+      return AVERROR_INVALIDDATA;
 
     return decode_chunks(avctx, picture, data_size, buf, buf_size);
 }
@@ -2355,11 +2359,13 @@ static int decode_chunks(AVCodecContext *avctx,
         switch(start_code) {
         case SEQ_START_CODE:
             if(last_code == 0){
-            mpeg1_decode_sequence(avctx, buf_ptr,
-                                    input_size);
+                mpeg1_decode_sequence(avctx, buf_ptr,
+                                      input_size);
                 s->sync=1;
             }else{
                 av_log(avctx, AV_LOG_ERROR, "ignoring SEQ_START_CODE after %X\n", last_code);
+                if (avctx->error_recognition >= FF_ER_EXPLODE)
+                    return AVERROR_INVALIDDATA;
             }
             break;
 
@@ -2388,6 +2394,8 @@ static int decode_chunks(AVCodecContext *avctx,
             last_code= PICTURE_START_CODE;
             }else{
                 av_log(avctx, AV_LOG_ERROR, "ignoring pic after %X\n", last_code);
+                if (avctx->error_recognition >= FF_ER_EXPLODE)
+                    return AVERROR_INVALIDDATA;
             }
             break;
         case EXT_START_CODE:
@@ -2399,6 +2407,8 @@ static int decode_chunks(AVCodecContext *avctx,
                 mpeg_decode_sequence_extension(s);
                 }else{
                     av_log(avctx, AV_LOG_ERROR, "ignoring seq ext after %X\n", last_code);
+                    if (avctx->error_recognition >= FF_ER_EXPLODE)
+                        return AVERROR_INVALIDDATA;
                 }
                 break;
             case 0x2:
@@ -2415,6 +2425,8 @@ static int decode_chunks(AVCodecContext *avctx,
                 mpeg_decode_picture_coding_extension(s);
                 }else{
                     av_log(avctx, AV_LOG_ERROR, "ignoring pic cod ext after %X\n", last_code);
+                    if (avctx->error_recognition >= FF_ER_EXPLODE)
+                        return AVERROR_INVALIDDATA;
                 }
                 break;
             }
@@ -2431,6 +2443,8 @@ static int decode_chunks(AVCodecContext *avctx,
                 s->sync=1;
             }else{
                 av_log(avctx, AV_LOG_ERROR, "ignoring GOP_START_CODE after %X\n", last_code);
+                if (avctx->error_recognition >= FF_ER_EXPLODE)
+                    return AVERROR_INVALIDDATA;
             }
             break;
         default:
@@ -2475,6 +2489,8 @@ static int decode_chunks(AVCodecContext *avctx,
 
                 if(!s2->pict_type){
                     av_log(avctx, AV_LOG_ERROR, "Missing picture start code\n");
+                    if (avctx->error_recognition >= FF_ER_EXPLODE)
+                        return AVERROR_INVALIDDATA;
                     break;
                 }
 
@@ -2485,6 +2501,8 @@ static int decode_chunks(AVCodecContext *avctx,
                 }
                 if(!s2->current_picture_ptr){
                     av_log(avctx, AV_LOG_ERROR, "current_picture not initialized\n");
+                    if (avctx->error_recognition >= FF_ER_EXPLODE)
+                        return AVERROR_INVALIDDATA;
                     return -1;
                 }
 
@@ -2514,6 +2532,8 @@ static int decode_chunks(AVCodecContext *avctx,
                     emms_c();
 
                     if(ret < 0){
+                        if (avctx->error_recognition >= FF_ER_EXPLODE)
+                            return AVERROR_INVALIDDATA;
                         if(s2->resync_mb_x>=0 && s2->resync_mb_y>=0)
                             ff_er_add_slice(s2, s2->resync_mb_x, s2->resync_mb_y, s2->mb_x, s2->mb_y, AC_ERROR|DC_ERROR|MV_ERROR);
                     }else{
diff --git a/libavcodec/vc1.c b/libavcodec/vc1.c
index 04fa77a7de..621f33bf62 100644
--- a/libavcodec/vc1.c
+++ b/libavcodec/vc1.c
@@ -503,6 +503,10 @@ static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb)
                     v->s.avctx->time_base.den = ff_vc1_fps_nr[nr - 1] * 1000;
                 }
             }
+            if(v->broadcast) { // Pulldown may be present
+                v->s.avctx->time_base.den *= 2;
+                v->s.avctx->ticks_per_frame = 2;
+            }
         }
 
         if(get_bits1(gb)){
@@ -821,7 +825,7 @@ int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
     case 4:
         v->s.pict_type = AV_PICTURE_TYPE_P; // skipped pic
         v->p_frame_skipped = 1;
-        return 0;
+        break;
     }
     if(v->tfcntrflag)
         skip_bits(gb, 8);
@@ -837,6 +841,9 @@ int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
         av_log_missing_feature(v->s.avctx, "Pan-scan", 0);
         //...
     }
+    if(v->p_frame_skipped) {
+        return 0;
+    }
     v->rnd = get_bits1(gb);
     if(v->interlace)
         v->uvsamp = get_bits1(gb);
diff --git a/libavcodec/vc1_parser.c b/libavcodec/vc1_parser.c
index 4ea9c47076..99023db492 100644
--- a/libavcodec/vc1_parser.c
+++ b/libavcodec/vc1_parser.c
@@ -45,6 +45,7 @@ static void vc1_extract_headers(AVCodecParserContext *s, AVCodecContext *avctx,
     vpc->v.s.avctx = avctx;
     vpc->v.parse_only = 1;
     next = buf;
+    s->repeat_pict = 0;
 
     for(start = buf, end = buf + buf_size; next < end; start = next){
         int buf2_size, size;
@@ -73,6 +74,20 @@ static void vc1_extract_headers(AVCodecParserContext *s, AVCodecContext *avctx,
             else
                 s->pict_type = vpc->v.s.pict_type;
 
+            if (avctx->ticks_per_frame > 1){
+                // process pulldown flags
+                s->repeat_pict = 1;
+                // Pulldown flags are only valid when 'broadcast' has been set.
+                // So ticks_per_frame will be 2
+                if (vpc->v.rff){
+                    // repeat field
+                    s->repeat_pict = 2;
+                }else if (vpc->v.rptfrm){
+                    // repeat frames
+                    s->repeat_pict = vpc->v.rptfrm * 2 + 1;
+                }
+            }
+
             break;
         }
     }
diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c
index bb9b804960..f9e9001a80 100644
--- a/libavcodec/vc1dec.c
+++ b/libavcodec/vc1dec.c
@@ -242,7 +242,7 @@ static void vc1_loop_filter_iblk(VC1Context *v, int pq)
     }
     v->vc1dsp.vc1_v_loop_filter16(s->dest[0] + 8*s->linesize, s->linesize, pq);
 
-    if (s->mb_y == s->mb_height-1) {
+    if (s->mb_y == s->end_mb_y-1) {
         if (s->mb_x) {
             v->vc1dsp.vc1_h_loop_filter16(s->dest[0], s->linesize, pq);
             v->vc1dsp.vc1_h_loop_filter8(s->dest[1], s->uvlinesize, pq);
@@ -294,7 +294,7 @@ static void vc1_loop_filter_iblk_delayed(VC1Context *v, int pq)
             v->vc1dsp.vc1_v_loop_filter16(s->dest[0] - 8 * s->linesize, s->linesize, pq);
         }
 
-        if (s->mb_y == s->mb_height) {
+        if (s->mb_y == s->end_mb_y) {
             if (s->mb_x) {
                 if (s->mb_x >= 2)
                     v->vc1dsp.vc1_h_loop_filter16(s->dest[0] - 16 * s->linesize - 16, s->linesize, pq);
@@ -2329,7 +2329,7 @@ static av_always_inline void vc1_apply_p_v_loop_filter(VC1Context *v, int block_
     } else {
         dst      = s->dest[0] + (block_num & 1) * 8 + ((block_num & 2) * 4 - 8) * linesize;
     }
-    if (s->mb_y != s->mb_height || block_num < 2) {
+    if (s->mb_y != s->end_mb_y || block_num < 2) {
         int16_t (*mv)[2];
         int mv_stride;
 
@@ -3019,7 +3019,7 @@ static void vc1_decode_i_blocks_adv(VC1Context *v)
         s->mb_x = 0;
         ff_init_block_index(s);
         memset(&s->coded_block[s->block_index[0]-s->b8_stride], 0,
-               s->b8_stride * sizeof(*s->coded_block));
+               (1 + s->b8_stride) * sizeof(*s->coded_block));
     }
     for(; s->mb_y < s->end_mb_y; s->mb_y++) {
         s->mb_x = 0;
@@ -3095,7 +3095,7 @@ static void vc1_decode_i_blocks_adv(VC1Context *v)
         if(v->s.loop_filter) vc1_loop_filter_iblk_delayed(v, v->pq);
     }
     if (v->s.loop_filter)
-        ff_draw_horiz_band(s, (s->mb_height-1)*16, 16);
+        ff_draw_horiz_band(s, (s->end_mb_y-1)*16, 16);
     ff_er_add_slice(s, 0, s->start_mb_y, s->mb_width - 1, s->end_mb_y - 1, (AC_END|DC_END|MV_END));
 }
 
@@ -3218,7 +3218,7 @@ static void vc1_decode_b_blocks(VC1Context *v)
         s->first_slice_line = 0;
     }
     if (v->s.loop_filter)
-        ff_draw_horiz_band(s, (s->mb_height-1)*16, 16);
+        ff_draw_horiz_band(s, (s->end_mb_y-1)*16, 16);
     ff_er_add_slice(s, 0, s->start_mb_y, s->mb_width - 1, s->end_mb_y - 1, (AC_END|DC_END|MV_END));
 }
 
@@ -3226,9 +3226,9 @@ static void vc1_decode_skip_blocks(VC1Context *v)
 {
     MpegEncContext *s = &v->s;
 
-    ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
+    ff_er_add_slice(s, 0, s->start_mb_y, s->mb_width - 1, s->end_mb_y - 1, (AC_END|DC_END|MV_END));
     s->first_slice_line = 1;
-    for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
+    for(s->mb_y = s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
         s->mb_x = 0;
         ff_init_block_index(s);
         ff_update_block_index(s);
@@ -3895,15 +3895,18 @@ static int vc1_decode_frame(AVCodecContext *avctx,
         goto err;
     }
 
+    // process pulldown flags
     s->current_picture_ptr->f.repeat_pict = 0;
+    // Pulldown flags are only valid when 'broadcast' has been set.
+    // So ticks_per_frame will be 2
     if (v->rff){
+        // repeat field
         s->current_picture_ptr->f.repeat_pict = 1;
     }else if (v->rptfrm){
+        // repeat frames
         s->current_picture_ptr->f.repeat_pict = v->rptfrm * 2;
     }
 
-    s->current_picture_ptr->f.top_field_first = v->tff;
-
     // for skipping the frame
     s->current_picture.f.pict_type = s->pict_type;
     s->current_picture.f.key_frame = s->pict_type == AV_PICTURE_TYPE_I;
diff --git a/libavcodec/vp6.c b/libavcodec/vp6.c
index e6132abeb6..ca0cc89161 100644
--- a/libavcodec/vp6.c
+++ b/libavcodec/vp6.c
@@ -215,8 +215,8 @@ static int vp6_huff_cmp(const void *va, const void *vb)
     return (a->count - b->count)*16 + (b->sym - a->sym);
 }
 
-static void vp6_build_huff_tree(VP56Context *s, uint8_t coeff_model[],
-                                const uint8_t *map, unsigned size, VLC *vlc)
+static int vp6_build_huff_tree(VP56Context *s, uint8_t coeff_model[],
+                               const uint8_t *map, unsigned size, VLC *vlc)
 {
     Node nodes[2*VP6_MAX_HUFF_SIZE], *tmp = &nodes[size];
     int a, b, i;
@@ -231,9 +231,9 @@ static void vp6_build_huff_tree(VP56Context *s, uint8_t coeff_model[],
     }
 
     free_vlc(vlc);
-    /* then build the huffman tree accodring to probabilities */
-    ff_huff_build_tree(s->avctx, vlc, size, nodes, vp6_huff_cmp,
-                       FF_HUFFMAN_FLAG_HNODE_FIRST);
+    /* then build the huffman tree according to probabilities */
+    return ff_huff_build_tree(s->avctx, vlc, size, nodes, vp6_huff_cmp,
+                              FF_HUFFMAN_FLAG_HNODE_FIRST);
 }
 
 static void vp6_parse_coeff_models(VP56Context *s)