RepoMirrors
/
ffmpeg
mirror of https://git.ffmpeg.org/ffmpeg.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

lavf/flacdec: Return maximum score if the streaminfo header is valid.

This commit is contained in:
Carl Eugen Hoyos 2017-03-02 09:29:10 +01:00
parent 4bed066377
commit 3733039610
1 changed files with 8 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
libavformat/flacdec.c
View File

@ -233,7 +233,14 @@ static int flac_probe(AVProbeData *p)
return raw_flac_probe(p);
if (p->buf_size < 4 || memcmp(p->buf, "fLaC", 4))
return 0;
return AVPROBE_SCORE_EXTENSION;
if ( p->buf[4] & 0x7f != FLAC_METADATA_TYPE_STREAMINFO
|| AV_RB24(p->buf + 5) != FLAC_STREAMINFO_SIZE
|| AV_RB16(p->buf + 8) < 16
|| AV_RB16(p->buf + 8) > AV_RB16(p->buf + 10)
|| !(AV_RB24(p->buf + 18) >> 4)
|| AV_RB24(p->buf + 18) >> 4 > 655350)
return AVPROBE_SCORE_EXTENSION;
return AVPROBE_SCORE_MAX;
}
static av_unused int64_t flac_read_timestamp(AVFormatContext *s, int stream_index,