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Verify FSIZE96 when encountering X96 sync code. 

Patch by Anssi Hannula, anssi d hannula a iki d fi

Originally committed as revision 26249 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Anssi Hannula 2011-01-06 22:24:39 +00:00 committed by Carl Eugen Hoyos
parent d381249bb8
commit df1c694c58
1 changed files with 9 additions and 3 deletions
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12
libavcodec/dca.c
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@ -1352,12 +1352,18 @@ static int dca_decode_frame(AVCodecContext * avctx,
s->xch_present = 1;
break;
}
case 0x1d95f262:
av_log(avctx, AV_LOG_DEBUG, "Possible X96 extension found at %d bits\n", get_bits_count(&s->gb));
av_log(avctx, AV_LOG_DEBUG, "FSIZE96 = %d bytes\n", get_bits(&s->gb, 12)+1);
case 0x1d95f262: {
int fsize96 = show_bits(&s->gb, 12) + 1;
if (s->frame_size != (get_bits_count(&s->gb) >> 3) - 4 + fsize96)
continue;
av_log(avctx, AV_LOG_DEBUG, "X96 extension found at %d bits\n", get_bits_count(&s->gb));
skip_bits(&s->gb, 12);
av_log(avctx, AV_LOG_DEBUG, "FSIZE96 = %d bytes\n", fsize96);
av_log(avctx, AV_LOG_DEBUG, "REVNO = %d\n", get_bits(&s->gb, 4));
break;
}
}
skip_bits_long(&s->gb, (-get_bits_count(&s->gb)) & 31);
}