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| author | Peter Ross <pross@xvid.org> | 2011-04-07 20:53:24 +1000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2011-04-07 17:54:52 +0200 |
| commit | aa9380c89c65873c41a76776296d9095c54731cd (patch) | |
| tree | 4bb03eaac01ba3898d6b3144319e14f7f3bffdaa /libavformat/riff.c | |
| parent | 36ffabc4eeab2e4489e83d874c19b86a4b44d25a (diff) | |
| download | ffmpeg-aa9380c89c65873c41a76776296d9095c54731cd.tar.gz | |
ff_get_wav_header: perform full lookup on WAVEFORMATEXTENSIBLE subformat guid
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavformat/riff.c')
| -rw-r--r-- | libavformat/riff.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/libavformat/riff.c b/libavformat/riff.c index 03dda1fc6a..0f843d328a 100644 --- a/libavformat/riff.c +++ b/libavformat/riff.c @@ -492,7 +492,6 @@ void ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size) id = avio_rl16(pb); codec->codec_type = AVMEDIA_TYPE_AUDIO; - codec->codec_tag = id; codec->channels = avio_rl16(pb); codec->sample_rate = avio_rl32(pb); codec->bit_rate = avio_rl32(pb) * 8; @@ -501,15 +500,29 @@ void ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size) codec->bits_per_coded_sample = 8; }else codec->bits_per_coded_sample = avio_rl16(pb); + if (id == 0xFFFE) { + codec->codec_tag = 0; + } else { + codec->codec_tag = id; + codec->codec_id = ff_wav_codec_get_id(id, codec->bits_per_coded_sample); + } if (size >= 18) { /* We're obviously dealing with WAVEFORMATEX */ int cbSize = avio_rl16(pb); /* cbSize */ size -= 18; cbSize = FFMIN(size, cbSize); if (cbSize >= 22 && id == 0xfffe) { /* WAVEFORMATEXTENSIBLE */ + ff_asf_guid subformat; codec->bits_per_coded_sample = avio_rl16(pb); codec->channel_layout = avio_rl32(pb); /* dwChannelMask */ - id = avio_rl32(pb); /* 4 first bytes of GUID */ - avio_skip(pb, 12); /* skip end of GUID */ + ff_get_guid(pb, &subformat); + if (!memcmp(subformat + 4, (const uint8_t[]){FF_MEDIASUBTYPE_BASE_GUID}, 12)) { + codec->codec_tag = AV_RL32(subformat); + codec->codec_id = ff_wav_codec_get_id(codec->codec_tag, codec->bits_per_coded_sample); + } else { + codec->codec_id = ff_codec_guid_get_id(ff_codec_wav_guids, subformat); + if (!codec->codec_id) + av_log(codec, AV_LOG_WARNING, "unknown subformat:"FF_PRI_GUID"\n", FF_ARG_GUID(subformat)); + } cbSize -= 22; size -= 22; } @@ -524,7 +537,6 @@ void ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size) if (size > 0) avio_skip(pb, size); } - codec->codec_id = ff_wav_codec_get_id(id, codec->bits_per_coded_sample); if (codec->codec_id == CODEC_ID_AAC_LATM) { /* channels and sample_rate values are those prior to applying SBR and/or PS */ codec->channels = 0; |