int32 nuiAudioDecoder::ReadDE(std::vector<void*> buffers, int32 sampleframes, nuiSampleBitFormat format)
{
//don't increment mPosition: it's already done in ReadIN
int32 channels = mInfo.GetChannels();
int16* pInterleaved = NULL;
float* pInterleavedFloat = NULL;
int32 read = 0;
switch (format)
{
case eSampleInt16:
pInterleaved = new int16[sampleframes * channels];
read = ReadIN((void*)pInterleaved, sampleframes, format);
for (int32 c = 0; c < channels; c++)
{
int16* pDst = (int16*)(buffers[c]);
int16* pSrc = pInterleaved + c;
for (int32 i = 0; i < read; i++)
{
*(pDst++) = *pSrc;
pSrc += channels;
}
}
delete[] pInterleaved;
break;
case eSampleFloat32:
pInterleavedFloat = new float[sampleframes * channels];
read = ReadIN((void*)pInterleavedFloat, sampleframes, format);
for (int32 c = 0; c < channels; c++)
{
float* pDst = (float*)(buffers[c]);
float* pSrc = pInterleavedFloat + c;
for (int32 i = 0; i < read; i++)
{
*(pDst++) = *pSrc;
pSrc += channels;
}
}
delete[] pInterleavedFloat;
break;
default:
break;
}
return read;
}
uint32 nuiChunkSampleReader::ReadDE(std::vector<void*> buffers, uint32 sampleframes, nuiSampleBitFormat format)
{
//don't increment mPosition: it's already done in ReadIN
const uint32 channels = mInfo.GetChannels();
uint32 length = mInfo.GetSampleFrames();
if (mPosition >= length)
return 0;
sampleframes = MIN(sampleframes, length - mPosition);
if (buffers.size() != channels)
{
return 0;
}
bool deleteBuffer = false;
uint32 SampleFramesRead = 0;
switch (format)
{
case eSampleFloat32:
{
float* pFloatBuffer = NULL;
if (channels == 1)
{
pFloatBuffer = (float*)(buffers[0]);
deleteBuffer = false;
}
else
{
pFloatBuffer = new float[sampleframes * channels];
deleteBuffer = true;
}
SampleFramesRead = ReadIN((void*)pFloatBuffer, sampleframes, format); //mPosition is incremented inside
for (uint32 s = 0; s < SampleFramesRead; s++)
{
for (uint32 c = 0; c < channels; c++)
{
float* pDest = (float*)buffers[c];
pDest[s] = pFloatBuffer[channels * s + c];
}
}
if (deleteBuffer)
delete[] pFloatBuffer;
}
break;
case eSampleInt16:
{
int16* pIntBuffer = NULL;
if (channels == 1)
{
pIntBuffer = (int16*)(buffers[0]);
deleteBuffer = false;
}
else
{
pIntBuffer = new int16[sampleframes * channels];
deleteBuffer = true;
}
SampleFramesRead = ReadIN((void*)pIntBuffer, sampleframes, format);//mPosition is incremented inside
for (uint32 s = 0; s < SampleFramesRead; s++)
{
for (uint32 c = 0; c < channels; c++)
{
((int16*)(buffers[c]))[s] = pIntBuffer[channels * s + c];
}
}
if (deleteBuffer)
delete[] pIntBuffer;
}
break;
default:
break;
}
//don't increment mPosition: it's already done in ReadIN
return SampleFramesRead;
}
