void _DoSlicing(object sender, DoWorkEventArgs e)
{
BackgroundWorker w = sender as BackgroundWorker;
inputWavFile.Rewind();
uint samplesPerSlice = 0;
if(durationRadio.Checked) {
samplesPerSlice = (uint)(durationBox.Value * (decimal)inputWavFile.SampleRate);
} else {
samplesPerSlice = (uint)(((decimal)inputWavFile.Duration / slicesBox.Value) * inputWavFile.SampleRate);
}
System.Diagnostics.Debug.Print("Samples per slice: {0}", samplesPerSlice);
System.Diagnostics.Debug.Print("nFrames: {0}", inputWavFile.NFrames);
int n = (int)Math.Ceiling(inputWavFile.NFrames / inputWavFile.NChannels / (float)samplesPerSlice);
byte[] iSlice = new byte[pictureBox1.ClientRectangle.Width];
for(int i=0;i<n;i++) {
string fileBaseName = String.Format("{0}_{1:D4}.wav", System.IO.Path.GetFileNameWithoutExtension(inputFileStream.Name), i+1);
string fileName = System.IO.Path.Combine(outputDirBox.Text, fileBaseName);
System.Diagnostics.Debug.Print("Debug: {0} {1}", fileName, i);
object[] derp = {fileBaseName, iSlice};
w.ReportProgress((int)(i / (float)(n-1) * 100), derp);
using(FileStream ofs = new FileStream(fileName, FileMode.OpenOrCreate, FileAccess.Write)) {
WavFile owf = new WavFile();
owf.SetFormat(inputWavFile.NChannels, inputWavFile.SampleWidth, inputWavFile.SampleRate);
byte[] data = inputWavFile.ReadRaw(samplesPerSlice);
Array.Copy(data, iSlice, iSlice.Length);
owf.Write(ofs, data);
}
Thread.Sleep((n<100?40:15));
}
}
void ValidateInputFile()
{
if(inputFileStream != null) {
inputFileStream.Close();
inputWavFile = null;
}
FileStream fs = null;
WavFile wf;
try {
fs = new FileStream(inputFileBox.Text, FileMode.Open, FileAccess.Read, FileShare.Read);
wf = new WavFile(fs);
} catch(Exception e) {
infoLabel.ForeColor = Color.Maroon;
infoLabel.Text = "Nope, not a valid file:\n" + e.Message;
if(fs != null) fs.Close();
return;
}
infoLabel.ForeColor = SystemColors.ControlText;
inputFileStream = fs;
inputWavFile = wf;
infoLabel.Text = String.Format("Sample Rate: {0}\nSample Resolution: {1} bits\nChannels: {2}\nDuration: {3}", wf.SampleRate, wf.SampleWidth, wf.NChannels, TimeSpan.FromSeconds(wf.Duration));
durationBox.Maximum = (decimal)wf.Duration;
ValidateSettings();
}
