From c675ef70253bdb8ad44d71198ff98be5474b85ee Mon Sep 17 00:00:00 2001 From: =?utf8?q?Andreas=20=C3=96man?= Date: Mon, 21 Apr 2008 15:20:53 +0000 Subject: [PATCH] Compute AC3 frame CRC for stronger raw AC3 format probing. Closes issue64. Originally committed as revision 12920 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavformat/raw.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavformat/raw.c b/libavformat/raw.c index c860b7f..5c188dc 100644 --- a/libavformat/raw.c +++ b/libavformat/raw.c @@ -22,6 +22,7 @@ #include "avformat.h" #include "ac3_parser.h" #include "raw.h" +#include "crc.h" #ifdef CONFIG_MUXERS /* simple formats */ @@ -429,6 +430,9 @@ static int ac3_probe(AVProbeData *p) for(frames = 0; buf2 < end; frames++) { if(ff_ac3_parse_header(buf2, &hdr) < 0) break; + if(buf2 + hdr.frame_size > end || + av_crc(av_crc_get_table(AV_CRC_16_ANSI), 0, buf2 + 2, hdr.frame_size - 2)) + break; buf2 += hdr.frame_size; } max_frames = FFMAX(max_frames, frames); -- 2.7.4