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| author | Carl Eugen Hoyos <cehoyos@ag.or.at> | 2015-10-01 19:58:10 +0200 |
|---|---|---|
| committer | Carl Eugen Hoyos <cehoyos@ag.or.at> | 2015-10-01 19:58:10 +0200 |
| commit | aea5db97f794c0f4e0132be14548af2d6023786d (patch) | |
| tree | e7e2c2f466239146970238a6efe1bb9fb08fa1ce /libavformat/rawdec.c | |
| parent | 17710550c483cc7779ed9ce6129bd85c5fa83a8e (diff) | |
| download | ffmpeg-aea5db97f794c0f4e0132be14548af2d6023786d.tar.gz | |
lavf/rawdec: Autodetect raw mlp streams.
Diffstat (limited to 'libavformat/rawdec.c')
| -rw-r--r-- | libavformat/rawdec.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/libavformat/rawdec.c b/libavformat/rawdec.c index 7684e1dd9a..56ac1997ce 100644 --- a/libavformat/rawdec.c +++ b/libavformat/rawdec.c @@ -207,9 +207,32 @@ FF_DEF_RAWVIDEO_DEMUXER2(mjpeg, "raw MJPEG video", mjpeg_probe, "mjpg,mjpeg,mpo" #endif #if CONFIG_MLP_DEMUXER +static int mlp_probe(AVProbeData *p) +{ + const uint8_t *buf, *last_buf = p->buf, *end = p->buf + p->buf_size; + int frames = 0, valid = 0, size = 0; + + for (buf = p->buf; buf + 8 <= end; buf++) { + if (AV_RB32(buf + 4) == 0xf8726fbb) { + frames++; + if (last_buf + size == buf) { + valid++; + } + last_buf = buf; + size = (AV_RB16(buf) & 0xfff) * 2; + } else if (buf - last_buf == size) { + size += (AV_RB16(buf) & 0xfff) * 2; + } + } + if (valid >= 100) + return AVPROBE_SCORE_MAX; + return 0; +} + AVInputFormat ff_mlp_demuxer = { .name = "mlp", .long_name = NULL_IF_CONFIG_SMALL("raw MLP"), + .read_probe = mlp_probe, .read_header = ff_raw_audio_read_header, .read_packet = ff_raw_read_partial_packet, .flags = AVFMT_GENERIC_INDEX | AVFMT_NOTIMESTAMPS, |