case 1: use the hexdump -C SMM0005.rcv get: size skip (size - 4) | | V V 00000000 18 00 00 c5 05 00 00 00 4d f1 0a 11 00 e0 01 00 00000010 00 d0 02 00 00 0c 00 00 00 88 13 00 00 c0 65 52 ^ | size + 16 case 2: same the command for SMM0015.rcv get: size | V 00000000 19 00 00 c5 04 00 00 00 41 f3 80 01 40 02 00 00 00000010 d0 02 00 00 0c 00 00 00 00 00 00 10 00 00 00 00 ^ | size + 16
There are different the RCV file format for VC-1, vc1test just handle the case 2 now, this fix will support the case 1. (Both of test clips come from: RP 228:2008 - SMPTE Recommended Practice - VC-1 Decoder and Bitstream Conformance). Signed-off-by: Jun Zhao <jun.z...@intel.com> Signed-off-by: Yan, FengX <fengx....@intel.com> --- libavformat/vc1test.c | 13 +++++++++++-- 1 files changed, 11 insertions(+), 2 deletions(-) diff --git a/libavformat/vc1test.c b/libavformat/vc1test.c index a801f4b..38eb1a4 100644 --- a/libavformat/vc1test.c +++ b/libavformat/vc1test.c @@ -34,9 +34,13 @@ static int vc1t_probe(AVProbeData *p) { + int size; + if (p->buf_size < 24) return 0; - if (p->buf[3] != 0xC5 || AV_RL32(&p->buf[4]) != 4 || AV_RL32(&p->buf[20]) != 0xC) + + size = AV_RL32(&p->buf[4]); + if (p->buf[3] != 0xC5 || AV_RL32(&p->buf[size+16]) != 0xC) return 0; return AVPROBE_SCORE_EXTENSION; @@ -48,10 +52,12 @@ static int vc1t_read_header(AVFormatContext *s) AVStream *st; int frames; uint32_t fps; + int size; frames = avio_rl24(pb); - if(avio_r8(pb) != 0xC5 || avio_rl32(pb) != 4) + if (avio_r8(pb) != 0xC5) return AVERROR_INVALIDDATA; + size = avio_rl32(pb); /* init video codec */ st = avformat_new_stream(s, NULL); @@ -63,6 +69,8 @@ static int vc1t_read_header(AVFormatContext *s) if (ff_get_extradata(s, st->codecpar, pb, VC1_EXTRADATA_SIZE) < 0) return AVERROR(ENOMEM); + + avio_skip(pb, size - 4); st->codecpar->height = avio_rl32(pb); st->codecpar->width = avio_rl32(pb); if(avio_rl32(pb) != 0xC) @@ -114,5 +122,6 @@ AVInputFormat ff_vc1t_demuxer = { .read_probe = vc1t_probe, .read_header = vc1t_read_header, .read_packet = vc1t_read_packet, + .extensions = "rcv", .flags = AVFMT_GENERIC_INDEX, }; -- 1.7.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel