diff options
| author | Chris Robinson <[email protected]> | 2010-03-17 15:15:12 -0700 |
|---|---|---|
| committer | Chris Robinson <[email protected]> | 2010-03-17 15:15:12 -0700 |
| commit | dd82b68175e2edca9b126ea109292890fdafcad5 (patch) | |
| tree | 02e98882fe0b60eaf8d1c4d9a29143f53e74295d /OpenAL32/alSource.c | |
| parent | 05a081a7b8660a90b1000f0727fda5a29e8fe3fa (diff) | |
Handle source offsets for muLaw formats
Diffstat (limited to 'OpenAL32/alSource.c')
| -rw-r--r-- | OpenAL32/alSource.c | 42 |
1 files changed, 31 insertions, 11 deletions
diff --git a/OpenAL32/alSource.c b/OpenAL32/alSource.c index a2c24a12..7dbe8452 100644 --- a/OpenAL32/alSource.c +++ b/OpenAL32/alSource.c @@ -1908,6 +1908,21 @@ static ALboolean GetSourceOffset(ALsource *pSource, ALenum eName, ALfloat *pflOf else pflOffset[1] = pflOffset[0]; } + else if(eOriginalFormat == AL_FORMAT_MONO_MULAW || + eOriginalFormat == AL_FORMAT_STEREO_MULAW || + eOriginalFormat == AL_FORMAT_QUAD_MULAW || + eOriginalFormat == AL_FORMAT_51CHN_MULAW || + eOriginalFormat == AL_FORMAT_61CHN_MULAW || + eOriginalFormat == AL_FORMAT_71CHN_MULAW) + { + pflOffset[0] = (ALfloat)(readPos / lBytes * 1); + pflOffset[1] = (ALfloat)(writePos / lBytes * 1); + } + else if(eOriginalFormat == AL_FORMAT_REAR_MULAW) + { + pflOffset[0] = (ALfloat)(readPos / 2 / lBytes * 1); + pflOffset[1] = (ALfloat)(writePos / 2 / lBytes * 1); + } else if (eOriginalFormat == AL_FORMAT_REAR8) { pflOffset[0] = (ALfloat)(readPos / 2 / lBytes * 1); @@ -2047,31 +2062,36 @@ static ALint GetByteOffset(ALsource *pSource) { // Round down to nearest ADPCM block lByteOffset = pSource->lOffset / (36 * lChannels); - // Multiply by compression rate + // Multiply by compression rate (65 samples per 36 byte block) lByteOffset = lByteOffset * 65 * lChannels * lBytes; - lByteOffset -= (lByteOffset % (lChannels * lBytes)); } - else if(OriginalFormat == AL_FORMAT_REAR8) + else if(OriginalFormat == AL_FORMAT_MONO_MULAW || + OriginalFormat == AL_FORMAT_STEREO_MULAW || + OriginalFormat == AL_FORMAT_QUAD_MULAW || + OriginalFormat == AL_FORMAT_51CHN_MULAW || + OriginalFormat == AL_FORMAT_61CHN_MULAW || + OriginalFormat == AL_FORMAT_71CHN_MULAW) { + /* muLaw has 1 byte per sample */ + lByteOffset = pSource->lOffset / 1 * lBytes; + } + else if(OriginalFormat == AL_FORMAT_REAR_MULAW) + { + /* Rear is converted from 2 -> 4 channel */ lByteOffset = pSource->lOffset / 1 * lBytes * 2; - lByteOffset -= (lByteOffset % (lChannels * lBytes)); } + else if(OriginalFormat == AL_FORMAT_REAR8) + lByteOffset = pSource->lOffset / 1 * lBytes * 2; else if(OriginalFormat == AL_FORMAT_REAR16) - { lByteOffset = pSource->lOffset / 2 * lBytes * 2; - lByteOffset -= (lByteOffset % (lChannels * lBytes)); - } else if(OriginalFormat == AL_FORMAT_REAR32) - { lByteOffset = pSource->lOffset / 4 * lBytes * 2; - lByteOffset -= (lByteOffset % (lChannels * lBytes)); - } else { ALuint OrigBytes = aluBytesFromFormat(OriginalFormat); lByteOffset = pSource->lOffset / OrigBytes * lBytes; - lByteOffset -= (lByteOffset % (lChannels * lBytes)); } + lByteOffset -= (lByteOffset % (lChannels * lBytes)); break; case AL_SAMPLE_OFFSET: |