patched ffmpeg nov 2

patches/ugly/08_enforce_theora_oob.patch

-diff -rpu -N orig/libavcodec/vp3.c ffmpeg-mt/libavcodec/vp3.c
---- orig/libavcodec/vp3.c       2010-10-11 16:55:01 -0700
-+++ ffmpeg-mt/libavcodec/vp3.c  2010-10-11 16:55:02 -0700
-@@ -869,6 +869,11 @@ static int unpack_vlcs(Vp3DecodeContext 
+diff -wurp -N orig/libavcodec/vp3.c ffmpeg-mt/libavcodec/vp3.c
+--- orig/libavcodec/vp3.c       2010-11-04 08:07:33 -0700
++++ ffmpeg-mt/libavcodec/vp3.c  2010-11-04 08:07:37 -0700
+@@ -869,6 +869,11 @@ static int unpack_vlcs(Vp3DecodeContext
      int num_coeffs = s->num_coded_frags[plane][coeff_index];
      int16_t *dct_tokens = s->dct_tokens[plane][coeff_index];
  
 +#ifdef ALT_BITSTREAM_READER
 +    if (gb->buffer_exhausted && gb->index > gb->size_in_bits)
 +        return 0;
 +#endif
 +
      /* local references to structure members to avoid repeated deferences */
      int *coded_fragment_list = s->coded_fragment_list[plane];
      Vp3Fragment *all_fragments = s->all_fragments;
 @@ -1046,6 +1051,11 @@ static int unpack_dct_coeffs(Vp3DecodeCo
                  2, residual_eob_run);
      }
  
 +#ifdef ALT_BITSTREAM_READER
 +    if (gb->buffer_exhausted && gb->index > gb->size_in_bits)
 +        return 1;
 +#endif
 +
      return 0;
  }
  
-@@ -1843,6 +1853,7 @@ static int vp3_decode_frame(AVCodecConte
+@@ -1841,6 +1851,7 @@ static int vp3_decode_frame(AVCodecConte
      int i;
  
      init_get_bits(&gb, buf, buf_size * 8);
 +    gb.buffer_enforcing = 1;
  
      if (s->theora && get_bits1(&gb))
      {
-@@ -2292,6 +2303,7 @@ static av_cold int theora_decode_init(AV
+@@ -2286,6 +2297,7 @@ static av_cold int theora_decode_init(AV
  
    for(i=0;i<3;i++) {
      init_get_bits(&gb, header_start[i], header_len[i] * 8);
 +    gb.buffer_enforcing = 1;
  
      ptype = get_bits(&gb, 8);