/// <summary>
/// Administer some special effects. Wheee!
/// </summary>
/// <param name="effect"></param>
/// <param name="args"></param>
/// <param name="data"></param>
public static void ApplyFX(DSP_FX effect, object[] args, ref WaveFile data)
{
double factor;
switch (effect) {
case DSP_FX.reverse:
for (int channel = 0; channel < data.channels; channel++) {
Array.Reverse(data.samples[channel]);
}
break;
case DSP_FX.normalize:
for (int channel = 0; channel < data.channels; channel++) {
factor = maxAmplitude(data.samples[channel]) * 1.1;
for (int sample = 0; sample < data.samples[channel].Length; sample++) {
data.samples[channel][sample] = data.samples[channel][sample] / factor;
}
}
break;
case DSP_FX.pitchshift:
for (int channel = 0; channel < data.channels; channel++) {
data.samples[channel] = pitchShift(ref data.samples[channel], data.sampleRate, (int)args[0]);
}
break;
default:
break;
}
}
public void setWave(WaveFile source)
{
wave = source;
waveform = new WaveFormat(wave.sampleRate, wave.bitDepth, wave.channels);
pbuffer = wave.getData();
}
internal void pasteSelection(int destIndex, WaveFile newWave)
{
//TODO: newWave must be resampled to match sampling rate with current sample.
double[][] result = new double[channels][];
int i;
if (destIndex > getNumSamples()) {
destIndex = getNumSamples();
}
int pre = destIndex;
int mid = newWave.getNumSamples();
int post = getNumSamples() - destIndex;
for (i = 0; i < channels; i++) {
result[i] = new double[pre + mid + post];
}
for (int channel = 0; channel < channels; channel++) {
//fill in pre
for (i = 0; i < pre; i++) {
result[channel][i] = samples[channel][i];
}
//fill in mid
for (i = pre; i < pre + mid; i++) {
result[channel][i] = newWave.samples[channel][i - pre];
}
//fill in post
for (i = pre; i < pre + post; i++) {
result[channel][i + mid] = samples[channel][i];
}
}
samples = result;
}
internal WaveFile copySelection(int start, int end)
{
if (!inRange(start) || end <= start) {
return null;
}
if (end > getNumSamples()) {
end = getNumSamples();
}
double[][] duplicate = new double[channels][];
for (int i = 0; i < channels; i++) {
duplicate[i] = new double[end - start];
}
for (int channel = 0; channel < channels; channel++) {
Array.Copy(samples[channel], start, duplicate[channel], 0, end - start);
}
WaveFile copy = new WaveFile(bitDepth, channels, sampleRate);
copy.pasteSelection(0, duplicate);
return copy;
}
private void createChildWindow(WaveFile wave)
{
WaveForm baby;
baby = new WaveForm(this, wave);
children.Add(baby);
activeChild = baby;
baby.Show();
updateWindowMenu();
}
private void createChildWindow(string path = null)
{
WaveFile wave;
WaveForm baby;
if (path == null) {
wave = new WaveFile();
baby = new WaveForm(this, wave);
baby.updateReport("New sine waves generated.");
} else {
try {
wave = new WaveFile(path);
baby = new WaveForm(this, wave);
baby.updateReport(wave.getName()+" opened successfully!");
} catch (Exception e) {
MessageBox.Show("Opening Failed: " + e.Message);
return;
}
}
children.Add(baby);
activeChild = baby;
baby.Show();
updateWindowMenu();
}
public WaveFile getSamples()
{
if (recorder.IsAlive) {
MsgQueue.Add(RecorderMsg.TERMINATING);
recorder.Join();
}
//create a new wave file with the byte array.
WaveFile result = null;
if (pSaveBuffer != null && pSaveBuffer.Length > 0) {
result = new WaveFile(8, 1, 11025, pSaveBuffer);
}
return result;
}
