void FileReader::setParameter (int parameterIndex, float newValue)
{
switch (parameterIndex)
{
//Change selected recording
case 0:
setActiveRecording (newValue);
break;
//set startTime
case 1:
startSample = millisecondsToSamples (newValue);
currentSample = startSample;
static_cast<FileReaderEditor*> (getEditor())->setCurrentTime (samplesToMilliseconds (currentSample));
break;
//set stop time
case 2:
stopSample = millisecondsToSamples(newValue);
currentSample = startSample;
static_cast<FileReaderEditor*> (getEditor())->setCurrentTime (samplesToMilliseconds (currentSample));
break;
}
}
void FileReader::process (AudioSampleBuffer& buffer)
{
const int samplesNeededPerBuffer = int (float (buffer.getNumSamples()) * (getDefaultSampleRate() / m_sysSampleRate));
m_samplesPerBuffer.set(samplesNeededPerBuffer);
// FIXME: needs to account for the fact that the ratio might not be an exact
// integer value
// if cache window id == 0, we need to read and cache BUFFER_WINDOW_CACHE_SIZE more buffer windows
if (bufferCacheWindow == 0)
{
switchBuffer();
}
for (int i = 0; i < currentNumChannels; ++i)
{
// offset readBuffer index by current cache window count * buffer window size * num channels
input->processChannelData (*readBuffer + (samplesNeededPerBuffer * currentNumChannels * bufferCacheWindow),
buffer.getWritePointer (i, 0),
i,
samplesNeededPerBuffer);
}
setTimestampAndSamples(timestamp, samplesNeededPerBuffer);
timestamp += samplesNeededPerBuffer;
static_cast<FileReaderEditor*> (getEditor())->setCurrentTime(samplesToMilliseconds(startSample + timestamp % (stopSample - startSample)));
bufferCacheWindow += 1;
bufferCacheWindow %= BUFFER_WINDOW_CACHE_SIZE;
}
void FileReader::setActiveRecording(int index)
{
input->setActiveRecord(index);
currentNumChannels = input->getActiveNumChannels();
currentNumSamples = input->getActiveNumSamples();
currentSampleRate = input->getActiveSampleRate();
startSample = 0;
stopSample = currentNumSamples;
currentSample = 0;
for (int i=0; i < currentNumChannels; i++)
{
channelInfo.add(input->getChannelInfo(i));
}
static_cast<FileReaderEditor*>(getEditor())->setTotalTime(samplesToMilliseconds(currentNumSamples));
readBuffer.malloc(currentNumChannels*BUFFER_SIZE);
}
void FileReader::setActiveRecording (int index)
{
input->setActiveRecord (index);
currentNumChannels = input->getActiveNumChannels();
currentNumSamples = input->getActiveNumSamples();
currentSampleRate = input->getActiveSampleRate();
currentSample = 0;
startSample = 0;
stopSample = currentNumSamples;
bufferCacheWindow = 0;
for (int i = 0; i < currentNumChannels; ++i)
{
channelInfo.add (input->getChannelInfo (i));
}
static_cast<FileReaderEditor*> (getEditor())->setTotalTime (samplesToMilliseconds (currentNumSamples));
input->seekTo(startSample);
}