ffv1: add 1 status byte to slices in in case crcs are stored too.

[ffmpeg] / libavcodec / ituh263dec.c

diff --git a/libavcodec/ituh263dec.c b/libavcodec/ituh263dec.c
index 5ff3c62a2505671d405ddcc138089e878c89b002..a16b17f4b568f8a60eafdd4eb32cc98fafa067ea 100644 (file)
--- a/libavcodec/ituh263dec.c
+++ b/libavcodec/ituh263dec.c
@@ -5,20 +5,20 @@
  * Copyright (c) 2001 Juan J. Sierralta P
  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  *
- * This file is part of Libav.
+ * This file is part of FFmpeg.
  *
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg 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.
  *
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
@@ -27,6 +27,8 @@
  * h263 decoder.
  */
 
+#define UNCHECKED_BITSTREAM_READER 1
+
 //#define DEBUG
 #include <limits.h>
 
@@ -238,7 +240,7 @@ int ff_h263_resync(MpegEncContext *s){
     if(show_bits(&s->gb, 16)==0){
         pos= get_bits_count(&s->gb);
         if(CONFIG_MPEG4_DECODER && s->codec_id==CODEC_ID_MPEG4)
-            ret= mpeg4_decode_video_packet_header(s);
+            ret= ff_mpeg4_decode_video_packet_header(s);
         else
             ret= h263_decode_gob_header(s);
         if(ret>=0)
@@ -255,7 +257,7 @@ int ff_h263_resync(MpegEncContext *s){
 
             pos= get_bits_count(&s->gb);
             if(CONFIG_MPEG4_DECODER && s->codec_id==CODEC_ID_MPEG4)
-                ret= mpeg4_decode_video_packet_header(s);
+                ret= ff_mpeg4_decode_video_packet_header(s);
             else
                 ret= h263_decode_gob_header(s);
             if(ret>=0)
@@ -465,7 +467,7 @@ static int h263_decode_block(MpegEncContext * s, DCTELEM * block,
             component = (n <= 3 ? 0 : n - 4 + 1);
             level = s->last_dc[component];
             if (s->rv10_first_dc_coded[component]) {
-                diff = rv_decode_dc(s, n);
+                diff = ff_rv_decode_dc(s, n);
                 if (diff == 0xffff)
                     return -1;
                 level += diff;
@@ -484,7 +486,7 @@ static int h263_decode_block(MpegEncContext * s, DCTELEM * block,
             level = get_bits(&s->gb, 8);
             if((level&0x7F) == 0){
                 av_log(s->avctx, AV_LOG_ERROR, "illegal dc %d at %d %d\n", level, s->mb_x, s->mb_y);
-                if(s->err_recognition & AV_EF_BITSTREAM)
+                if(s->err_recognition & (AV_EF_BITSTREAM|AV_EF_COMPLIANT))
                     return -1;
             }
             if (level == 255)
@@ -852,8 +854,8 @@ end:
     {
         int v= show_bits(&s->gb, 16);
 
-        if(get_bits_count(&s->gb) + 16 > s->gb.size_in_bits){
-            v>>= get_bits_count(&s->gb) + 16 - s->gb.size_in_bits;
+        if (get_bits_left(&s->gb) < 16) {
+            v >>= 16 - get_bits_left(&s->gb);
         }
 
         if(v==0)
@@ -1083,6 +1085,20 @@ int ff_h263_decode_picture_header(MpegEncContext *s)
         skip_bits(&s->gb, 2); /* Quantization information for B-pictures */
     }
 
+    if (s->pict_type!=AV_PICTURE_TYPE_B) {
+        s->time= s->picture_number;
+        s->pp_time= s->time - s->last_non_b_time;
+        s->last_non_b_time= s->time;
+    }else{
+        s->time= s->picture_number;
+        s->pb_time= s->pp_time - (s->last_non_b_time - s->time);
+        if(s->pp_time <=s->pb_time || s->pp_time <= s->pp_time - s->pb_time || s->pp_time<=0){
+            s->pp_time = 2;
+            s->pb_time = 1;
+        }
+        ff_mpeg4_init_direct_mv(s);
+    }
+
     /* PEI */
     while (get_bits1(&s->gb) != 0) {
         skip_bits(&s->gb, 8);
@@ -1112,7 +1128,7 @@ int ff_h263_decode_picture_header(MpegEncContext *s)
     }
 
         ff_h263_show_pict_info(s);
-    if (s->pict_type == AV_PICTURE_TYPE_I && s->codec_tag == AV_RL32("ZYGO")){
+    if (s->pict_type == AV_PICTURE_TYPE_I && s->codec_tag == AV_RL32("ZYGO") && get_bits_left(&s->gb) >= 85 + 13*3*16 + 50){
         int i,j;
         for(i=0; i<85; i++) av_log(s->avctx, AV_LOG_DEBUG, "%d", get_bits1(&s->gb));
         av_log(s->avctx, AV_LOG_DEBUG, "\n");