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| author | Justin Ruggles <justin.ruggles@gmail.com> | 2012-11-27 14:52:38 -0500 |
|---|---|---|
| committer | Justin Ruggles <justin.ruggles@gmail.com> | 2012-11-28 11:18:50 -0500 |
| commit | 261e9348ef377efc8672c6f8ade974cee7db8e49 (patch) | |
| tree | ff98f739e44a47e958e029c54026725b0f610cb5 /libavformat/utils.c | |
| parent | bfe5454cd238b16e7977085f880205229103eccb (diff) | |
| download | ffmpeg-261e9348ef377efc8672c6f8ade974cee7db8e49.tar.gz | |
lavf: add a common function for selecting a pcm codec from parameters
Diffstat (limited to 'libavformat/utils.c')
| -rw-r--r-- | libavformat/utils.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/libavformat/utils.c b/libavformat/utils.c index fc8b770a85..481760b5ad 100644 --- a/libavformat/utils.c +++ b/libavformat/utils.c @@ -2135,6 +2135,36 @@ enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag) return AV_CODEC_ID_NONE; } +enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags) +{ + if (flt) { + switch (bps) { + case 32: return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE; + case 64: return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE; + default: return AV_CODEC_ID_NONE; + } + } else { + bps >>= 3; + if (sflags & (1 << (bps - 1))) { + switch (bps) { + case 1: return AV_CODEC_ID_PCM_S8; + case 2: return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE; + case 3: return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE; + case 4: return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE; + default: return AV_CODEC_ID_NONE; + } + } else { + switch (bps) { + case 1: return AV_CODEC_ID_PCM_U8; + case 2: return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE; + case 3: return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE; + case 4: return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE; + default: return AV_CODEC_ID_NONE; + } + } + } +} + unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum AVCodecID id) { int i; |