diff options
Diffstat (limited to 'libavformat')
| -rw-r--r-- | libavformat/dv.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/libavformat/dv.c b/libavformat/dv.c index 7b4cb0b093..820c3b5cec 100644 --- a/libavformat/dv.c +++ b/libavformat/dv.c @@ -474,12 +474,30 @@ static int dv_read_close(AVFormatContext *s) return 0; } +static int dv_probe(AVProbeData *p) +{ + unsigned state; + int i; + + if (p->buf_size < 5) + return 0; + + state = AV_RB32(p->buf); + for (i = 4; i < p->buf_size; i++) { + if ((state & 0xffffff7f) == 0x1f07003f) + return AVPROBE_SCORE_MAX*3/4; // not max to avoid dv in mov to match + state = (state << 8) | p->buf[i]; + } + + return 0; +} + #if CONFIG_DV_DEMUXER AVInputFormat dv_demuxer = { "dv", NULL_IF_CONFIG_SMALL("DV video format"), sizeof(RawDVContext), - NULL, + dv_probe, dv_read_header, dv_read_packet, dv_read_close, |