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| author | Carl Eugen Hoyos <cehoyos@ag.or.at> | 2015-04-10 12:35:02 +0200 |
|---|---|---|
| committer | Carl Eugen Hoyos <cehoyos@ag.or.at> | 2015-04-10 12:35:02 +0200 |
| commit | 7b39d853b88e4be03f2cfb346df3ad55ccae3377 (patch) | |
| tree | 8919d7aad2e1ba4107babac7f162ed3361331e0c /libavformat/flacdec.c | |
| parent | 3553b815f66cb42f79706d6be5c11c0b13d9ac2e (diff) | |
| download | ffmpeg-7b39d853b88e4be03f2cfb346df3ad55ccae3377.tar.gz | |
lavf/flac: Autodetect raw flac files.
Diffstat (limited to 'libavformat/flacdec.c')
| -rw-r--r-- | libavformat/flacdec.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/libavformat/flacdec.c b/libavformat/flacdec.c index 1a8dc19af3..4207fd2bf6 100644 --- a/libavformat/flacdec.c +++ b/libavformat/flacdec.c @@ -176,8 +176,26 @@ fail: return ret; } +static int raw_flac_probe(AVProbeData *p) +{ + if ((p->buf[2] & 0xF0) == 0) // blocksize code invalid + return 0; + if ((p->buf[2] & 0x0F) == 0x0F) // sample rate code invalid + return 0; + if ((p->buf[3] & 0xF0) >= FLAC_MAX_CHANNELS + FLAC_CHMODE_MID_SIDE << 4) + // channel mode invalid + return 0; + if ((p->buf[3] & 0x06) == 0x06) // bits per sample code invalid + return 0; + if ((p->buf[3] & 0x01) == 0x01) // reserved bit set + return 0; + return AVPROBE_SCORE_EXTENSION / 4 + 1; +} + static int flac_probe(AVProbeData *p) { + if ((AV_RB16(p->buf) & 0xFFFE) == 0xFFF8) + return raw_flac_probe(p); if (p->buf_size < 4 || memcmp(p->buf, "fLaC", 4)) return 0; return AVPROBE_SCORE_EXTENSION; |