private void ProcessWav(XTempoJob param)
{
var outFileName = string.IsNullOrEmpty(param.AlternativeOutputPath) ? param.SourceFileName.GenerateOutPutPath() :
param.AlternativeOutputPath;
var soundTouch = new SoundTouch <TSampleType, TLongSampleType>();
if (param.SourceData != null)
{
File.WriteAllBytes(param.SourceFileName, param.SourceData);
}
using (var inFile = new WavInFile(param.SourceFileName))
using (var outFile = new WavOutFile(outFileName, (inFile).GetSampleRate(), (inFile).GetNumBits(), (inFile).GetNumChannels()))
{
Setup(soundTouch, inFile.GetSampleRate(), inFile.GetNumChannels(), param.TempoDelta, param.PitchDelta);
Process(soundTouch, inFile, outFile);
}
param.ResulFileName = outFileName;
if (param.ReturnData)
{
param.OutputData = File.ReadAllBytes(outFileName);
File.Delete(outFileName);
}
}
private void Process(SoundTouch <TSampleType, TLongSampleType> pSoundTouch, WavInFile inFile, WavOutFile outFile)
{
int nSamples;
var sampleBuffer = new TSampleType[BUFF_SIZE];
if ((inFile == null) || (outFile == null))
{
return; // nothing to do.
}
int nChannels = inFile.GetNumChannels();
int buffSizeSamples = BUFF_SIZE / nChannels;
// Process samples read from the input file
while (!inFile.Eof())
{
// Read a chunk of samples from the input file
int num = inFile.Read(sampleBuffer, BUFF_SIZE);
nSamples = num / inFile.GetNumChannels();
// Feed the samples into SoundTouch processor
pSoundTouch.PutSamples(sampleBuffer, nSamples);
do
{
nSamples = pSoundTouch.ReceiveSamples(sampleBuffer, buffSizeSamples);
outFile.Write(sampleBuffer, nSamples * nChannels);
} while (nSamples != 0);
}
// Now the input file is processed, yet 'flush' few last samples that are
// hiding in the SoundTouch's internal processing pipeline.
pSoundTouch.Flush();
do
{
nSamples = pSoundTouch.ReceiveSamples(sampleBuffer, buffSizeSamples);
outFile.Write(sampleBuffer, nSamples * nChannels);
} while (nSamples != 0);
}
