diff options
author | Paul B Mahol <onemda@gmail.com> | 2023-09-06 02:04:10 +0200 |
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committer | Paul B Mahol <onemda@gmail.com> | 2023-09-09 12:09:49 +0200 |
commit | 5f8c113b75de9c2a7f49e337cd332abbf8adbb6e (patch) | |
tree | 7a6fab25b723ebb13d974ba327e63ef8496241b1 /libavformat/flacdec.c | |
parent | e6923e06c20d42f08b929fbfb4cad9c58d2e71e7 (diff) |
avformat/flacdec: set time base for headerless flac
Fixes #6396.
Diffstat (limited to 'libavformat/flacdec.c')
-rw-r--r-- | libavformat/flacdec.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/libavformat/flacdec.c b/libavformat/flacdec.c index b58ec03963..5104f23110 100644 --- a/libavformat/flacdec.c +++ b/libavformat/flacdec.c @@ -46,11 +46,16 @@ static void reset_index_position(int64_t metadata_head_size, AVStream *st) sti->index_entries[i].pos += metadata_head_size; } +static const uint16_t sr_table[16] = { + 0, 1764, 3528, 3840, 160, 320, 441, 480, 640, 882, 960, 1920, 0, 0, 0, 0 +}; + static int flac_read_header(AVFormatContext *s) { int ret, metadata_last=0, metadata_type, metadata_size, found_streaminfo=0; uint8_t header[4]; uint8_t *buffer=NULL; + uint32_t marker; FLACDecContext *flac = s->priv_data; AVStream *st = avformat_new_stream(s, NULL); if (!st) @@ -61,7 +66,11 @@ static int flac_read_header(AVFormatContext *s) /* the parameters will be extracted from the compressed bitstream */ /* if fLaC marker is not found, assume there is no header */ - if (avio_rl32(s->pb) != MKTAG('f','L','a','C')) { + marker = avio_rl32(s->pb); + if (marker != MKTAG('f','L','a','C')) { + const int sample_rate = 50 * sr_table[(marker >> 16) & 0xF]; + if (sample_rate) + avpriv_set_pts_info(st, 64, 1, sample_rate); avio_seek(s->pb, -4, SEEK_CUR); return 0; } |