[SCM] libav/experimental: In h264 decoder, fix decoding when nal end sequence is present

[siretart at users.alioth.debian.org]

The following commit has been merged in the experimental branch:
commit 9d252137e502c5de20b10206f84f30917d6ebab8
Author: Baptiste Coudurier <baptiste.coudurier at gmail.com>
Date:   Tue Nov 23 01:16:37 2010 +0000

    In h264 decoder, fix decoding when nal end sequence is present
    
    Originally committed as revision 25809 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavcodec/h264.c b/libavcodec/h264.c
index f99f7ea..9198d7c 100644
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@@ -2783,14 +2783,9 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
             nalsize = 0;
             for(i = 0; i < h->nal_length_size; i++)
                 nalsize = (nalsize << 8) | buf[buf_index++];
-            if(nalsize <= 1 || nalsize > buf_size - buf_index){
-                if(nalsize == 1){
-                    buf_index++;
-                    continue;
-                }else{
-                    av_log(h->s.avctx, AV_LOG_ERROR, "AVC: nal size %d\n", nalsize);
-                    break;
-                }
+            if(nalsize <= 0 || nalsize > buf_size - buf_index){
+                av_log(h->s.avctx, AV_LOG_ERROR, "AVC: nal size %d\n", nalsize);
+                break;
             }
             next_avc= buf_index + nalsize;
         } else {
@@ -2990,6 +2985,7 @@ static int decode_frame(AVCodecContext *avctx,
     s->flags2= avctx->flags2;
 
    /* end of stream, output what is still in the buffers */
+ out:
     if (buf_size == 0) {
         Picture *out;
         int i, out_idx;
@@ -3018,6 +3014,11 @@ static int decode_frame(AVCodecContext *avctx,
     if(buf_index < 0)
         return -1;
 
+    if (!s->current_picture_ptr && h->nal_unit_type == NAL_END_SEQUENCE) {
+        buf_size = 0;
+        goto out;
+    }
+
     if(!(s->flags2 & CODEC_FLAG2_CHUNKS) && !s->current_picture_ptr){
         if (avctx->skip_frame >= AVDISCARD_NONREF || s->hurry_up) return 0;
         av_log(avctx, AV_LOG_ERROR, "no frame!\n");

-- 
Libav/FFmpeg packaging