bool AudioFormatWriter::writeFromAudioSource (AudioSource& source,
int numSamplesToRead,
const int samplesPerBlock)
{
const int maxChans = 128;
AudioSampleBuffer tempBuffer (getNumChannels(), samplesPerBlock);
int* buffers [maxChans];
while (numSamplesToRead > 0)
{
const int numToDo = jmin (numSamplesToRead, samplesPerBlock);
AudioSourceChannelInfo info;
info.buffer = &tempBuffer;
info.startSample = 0;
info.numSamples = numToDo;
info.clearActiveBufferRegion();
source.getNextAudioBlock (info);
int i;
for (i = maxChans; --i >= 0;)
buffers[i] = 0;
for (i = tempBuffer.getNumChannels(); --i >= 0;)
buffers[i] = (int*) tempBuffer.getSampleData (i, 0);
if (! isFloatingPoint())
{
int** bufferChan = buffers;
while (*bufferChan != 0)
{
int* b = *bufferChan++;
// float -> int
for (int j = numToDo; --j >= 0;)
{
const double samp = *(const float*) b;
if (samp <= -1.0)
*b++ = INT_MIN;
else if (samp >= 1.0)
*b++ = INT_MAX;
else
*b++ = roundToInt (INT_MAX * samp);
}
}
}
if (! write ((const int**) buffers, numToDo))
return false;
numSamplesToRead -= numToDo;
}
return true;
}
bool AudioFormatWriter::writeFromAudioSource (AudioSource& source, int numSamplesToRead, const int samplesPerBlock)
{
AudioSampleBuffer tempBuffer (getNumChannels(), samplesPerBlock);
while (numSamplesToRead > 0)
{
const int numToDo = jmin (numSamplesToRead, samplesPerBlock);
AudioSourceChannelInfo info (&tempBuffer, 0, numToDo);
info.clearActiveBufferRegion();
source.getNextAudioBlock (info);
if (! writeFromAudioSampleBuffer (tempBuffer, 0, numToDo))
return false;
numSamplesToRead -= numToDo;
}
return true;
}
