Commit 7b39d853 authored by Carl Eugen Hoyos's avatar Carl Eugen Hoyos

lavf/flac: Autodetect raw flac files.

parent 3553b815
......@@ -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;
......
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