/// <summary>Save the current file.</summary>
public void SaveAs()
{
SaveFileDialog dialog = new SaveFileDialog();
dialog.DefaultExt = WaveformFormat.Formats[0].Extension;
dialog.Filter = WaveformFormat.AllFilters;
// Base the initial file and directory on the current waveform file
// name.
FileInfo fi = new FileInfo(waveform.Profile.filename);
dialog.InitialDirectory = fi.Directory.FullName;
dialog.FileName =
Path.GetFileNameWithoutExtension(waveform.Profile.filename);
if (dialog.ShowDialog() == DialogResult.OK)
{
Program.MainForm.UseWaitCursor = true;
Program.MainForm.DefaultStatus = "Saving...";
Thread savethread = new Thread(() =>
{
WaveformFormat format =
WaveformFormat.Formats[dialog.FilterIndex - 1];
format.Save(waveform, dialog.FileName);
Program.MainForm.Invoke((Action)(() =>
{
Program.MainForm.UseWaitCursor = false;
Program.MainForm.DefaultStatus = "Ready";
}));
});
savethread.Start();
}
}
public static void CheckFormat(WaveformFormat format,
short expectedChannelsCount, int expectedSamplesPerSecond, short expectedBitsPerSample)
{
var sampleSize = (short)((expectedBitsPerSample + 7) / 8);
var frameSize = (short)(expectedChannelsCount * sampleSize);
var bytesPerSecond = frameSize * expectedSamplesPerSecond;
format.ChannelsCount.ShouldEqual(expectedChannelsCount);
format.SamplesPerSecond.ShouldEqual(expectedSamplesPerSecond);
format.BitsPerSample.ShouldEqual(expectedBitsPerSample);
format.SampleSize.ShouldEqual(sampleSize);
format.FrameSize.ShouldEqual(frameSize);
format.BytesPerSecond.ShouldEqual(bytesPerSecond);
}
protected override void When()
{
_frames = new WaveForm16BitFrame[]
{
new WaveForm16BitFrame(new [] { (short)1, (short)2 }),
new WaveForm16BitFrame(new [] { (short)3, (short)4 }),
};
var format = new WaveformFormat(_channelsCount, _samplesPerSecond, _bitsPerSample);
var waveForm = new MemoryWaveform(format, _frames);
using (var waveFormWriter = new WaveformFileWaveformWriter(_filePath))
{
waveFormWriter.Write(waveForm);
}
}
public static void GenerateWaveformFile(string outPath)
{
short channelsCount = 2;
int samplesPerSecond = 44100;
short bitsPerSample = 16;
var frequency = 440;
var durationInSeconds = 2;
var amplitude = 0.1;
var frames = FunctionValueGenerator
.GenerateSineValuesForFrequency(frequency, samplesPerSecond, durationInSeconds,
(x, y) =>
{
var samples = new [] { amplitude *y, amplitude *y };
return(new WaveForm16BitFrame(samples));
});
var format = new WaveformFormat(channelsCount, samplesPerSecond, bitsPerSample);
var waveForm = new MemoryWaveform(format, frames);
WriteWaveformFile(outPath, waveForm);
}
