diff options
Diffstat (limited to 'sound/audiostream.cpp')
| -rw-r--r-- | sound/audiostream.cpp | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/sound/audiostream.cpp b/sound/audiostream.cpp index 7a0164c1d5..0c31a65f0e 100644 --- a/sound/audiostream.cpp +++ b/sound/audiostream.cpp @@ -336,6 +336,34 @@ public: }; #endif +CustomProcInputStream::CustomProcInputStream(int rate, byte flags, CustomInputProc proc, void *refCon) { + _refCon = refCon; + _refStream = this; + _rate = rate; + _proc = proc; + _finished = false; + _isStereo = (flags & SoundMixer::FLAG_STEREO) != 0; + _is16Bit = (flags & SoundMixer::FLAG_16BITS) != 0; + _isUnsigned = (flags & SoundMixer::FLAG_UNSIGNED) != 0; + assert(!(flags & SoundMixer::FLAG_LITTLE_ENDIAN)); + assert(!(flags & SoundMixer::FLAG_AUTOFREE)); +} + +int CustomProcInputStream::readBuffer(int16 *buffer, const int numSamples) { + int numBytes = numSamples; + numBytes *= (_is16Bit ? 2 : 1); + byte *tmpBuffer = (byte *)malloc(numBytes); + int gotSamples = (_proc)(_refCon, _refStream, tmpBuffer, numBytes) / (_is16Bit ? 2 : 1); + + const byte *ptr = tmpBuffer; + for (int samples = 0; samples < gotSamples; samples++) { + *buffer++ = READSAMPLE(_is16Bit, _isUnsigned, ptr); + ptr += (_is16Bit ? 2 : 1); + } + + free(tmpBuffer); + return gotSamples; +} #pragma mark - #pragma mark --- Input stream factories --- |