private void AudioWaveForm_Click(object sender, EventArgs e)
{
if (audioVisualizer.WavePeaks == null)
{
if (string.IsNullOrEmpty(_videoFileName))
{
buttonOpenVideo_Click(sender, e);
if (string.IsNullOrEmpty(_videoFileName))
return;
}
if (mediaPlayer != null)
mediaPlayer.Pause();
var addWaveForm = new AddWareForm();
string peakWaveFileName = GetPeakWaveFileName(_videoFileName);
string spectrogramFolder = GetSpectrogramFolder(_videoFileName);
addWaveForm.Initialize(_videoFileName, spectrogramFolder, _videoAudioTrackNumber);
if (addWaveForm.ShowDialog() == DialogResult.OK)
{
addWaveForm.WavePeak.WritePeakSamples(peakWaveFileName);
var audioPeakWave = new WavePeakGenerator(peakWaveFileName);
audioPeakWave.GenerateAllSamples();
audioPeakWave.Close();
audioVisualizer.WavePeaks = audioPeakWave;
if (addWaveForm.SpectrogramBitmaps != null)
audioVisualizer.InitializeSpectrogram(addWaveForm.SpectrogramBitmaps, spectrogramFolder);
timerWaveForm.Start();
}
}
}
/// <summary>
/// The read wave file.
/// </summary>
/// <param name="targetFile">
/// The target file.
/// </param>
/// <param name="delayInMilliseconds">
/// The delay in milliseconds.
/// </param>
private void ReadWaveFile(string targetFile, int delayInMilliseconds)
{
this.labelProgress.Text = Configuration.Settings.Language.AddWaveform.GeneratingPeakFile;
this.Refresh();
var waveFile = new WavePeakGenerator(targetFile);
int sampleRate = Configuration.Settings.VideoControls.WaveformMinimumSampleRate; // Normally 128
while (waveFile.Header.SampleRate % sampleRate != 0 && sampleRate < 5000)
{
sampleRate++; // old sample-rate / new sample-rate must have rest = 0
}
waveFile.GeneratePeakSamples(sampleRate, delayInMilliseconds); // samples per second - SampleRate
if (Configuration.Settings.VideoControls.GenerateSpectrogram)
{
this.labelProgress.Text = Configuration.Settings.Language.AddWaveform.GeneratingSpectrogram;
this.Refresh();
Directory.CreateDirectory(this._spectrogramDirectory);
this.SpectrogramBitmaps = waveFile.GenerateFourierData(256, this._spectrogramDirectory, delayInMilliseconds); // image height = nfft / 2
}
this.WavePeak = waveFile;
waveFile.Close();
this.labelPleaseWait.Visible = false;
}