public void TestMethod()
{
const double silence = 0.0001;
var wavDataSmall = new float[] { 0.0001f, -0.8f, 0.05f, -0.05f, 0.2f, 0.4f, 1.0f, 0.0001f };
Bitmap png = AudioAnalyzer.DrawWaveformMono(wavDataSmall, new Size(1000, 600), 1, 1, 0, 44100);
string fileName = String.Format("wave-small-dataset-{0}.png", 1);
png.Save(fileName);
// crop
float[] wavDataSmallCropped = AudioUtils.CropAudioAtSilence(wavDataSmall, silence, false, 0);
png = AudioAnalyzer.DrawWaveformMono(wavDataSmallCropped, new Size(1000, 600), 1, 1, 0, 44100);
fileName = String.Format("wave-small-dataset-cropped{0}.png", 1);
png.Save(fileName);
// init audio system
var audioSystem = BassProxy.Instance;
float[] wavDataBig = BassProxy.ReadMonoFromFile(WAVE_INPUT_FILEPATH, 44100, 10, 0);
png = AudioAnalyzer.DrawWaveformMono(wavDataBig, new Size(1000, 600), 2000, 1, 0, 44100);
fileName = String.Format("wave-big-dataset-{0}.png", 1);
png.Save(fileName);
// crop
float[] wavDataBigCropped = AudioUtils.CropAudioAtSilence(wavDataBig, silence, false, 0);
png = AudioAnalyzer.DrawWaveformMono(wavDataBigCropped, new Size(1000, 600), 1, 1, 0, 44100);
fileName = String.Format("wave-big-dataset-cropped{0}.png", 1);
png.Save(fileName);
}
/// <summary>
/// sets graph data
/// </summary>
public void SetAudioData(float[] audioData)
{
this.audioData = audioData;
bmp = AudioAnalyzer.DrawWaveformMono(audioData,
new Size(this.Width, this.Height),
waveDisplayAmplitude,
waveDisplayStartZoomPosition,
waveDisplayEndZoomPosition,
sampleRate, true);
// force redraw
this.Invalidate();
}
private void UpdateWaveform()
{
if (soundPlayer == null || soundPlayer.WaveformData == null)
{
return;
}
if (soundPlayer.WaveformData != null && soundPlayer.WaveformData.Length > 1)
{
this.offlineBitmap = AudioAnalyzer.DrawWaveformMono(soundPlayer.WaveformData, new Size(this.Width, this.Height), amplitude, startZoomSamplePosition, endZoomSamplePosition, soundPlayer.SampleRate, true);
// force redraw
this.Invalidate();
}
}
void MeasureLFOBtnClick(object sender, EventArgs e)
{
MeasureLFOInit();
VstHost host = VstHost.Instance;
var lfoAlreadyProcessed = new List <string>();
// step through the LFO steps
int count = 0;
for (float paramValue = 1.0f; paramValue >= 0.0f; paramValue -= 0.020f)
{
// time how long this takes
Stopwatch stopwatch = Stopwatch.StartNew();
// init the buffers
host.ClearRecording();
host.ClearLastProcessedBuffers();
// start record
host.Record = true;
// set the parameter
PluginContext.PluginCommandStub.SetParameter(SYLENTH_PARAM_LFO1_RATE, paramValue);
// get param display value
string paramDisplay = PluginContext.PluginCommandStub.GetParameterDisplay(SYLENTH_PARAM_LFO1_RATE);
// check if already processed
if (lfoAlreadyProcessed.Contains(paramDisplay))
{
continue;
}
else
{
lfoAlreadyProcessed.Add(paramDisplay);
}
// wait until it has started playing
while (!host.LastProcessedBufferLeftPlaying)
{
// start playing audio
Playback.Play();
// play midi
host.SendMidiNote(host.SendContinousMidiNote, host.SendContinousMidiNoteVelocity);
if (stopwatch.ElapsedMilliseconds > 5000)
{
stopwatch.Stop();
Console.Out.WriteLine("MeasureLFOBtnClick: Playing Midi Failed!");
return;
}
System.Threading.Thread.Sleep(100);
}
// play for approx 1000 ms
// paramValue: 1 = 1/256 Triple (count = 0)
// paramValue: 0 = 8/1 D (count = 10)
System.Threading.Thread.Sleep((int)(20 * Math.Pow(count, 2)));
// stop midi
host.SendMidiNote(host.SendContinousMidiNote, 0);
// wait until it has stopped playing
while (host.LastProcessedBufferLeftPlaying)
{
if (stopwatch.ElapsedMilliseconds > 40000)
{
Console.Out.WriteLine("MeasureLFOBtnClick: Playing never stopped?!");
break;
}
}
// stop playing audio
Playback.Stop();
stopwatch.Stop();
Console.Out.WriteLine("MeasureLFOBtnClick: Playing stopped: {0} ms. {1}", stopwatch.ElapsedMilliseconds, paramDisplay);
// stop recording
host.Record = false;
// crop
CropAudio();
// store this in a wav ouput file.
string wavFilePath = String.Format("audio-LFO-{0}-{1}.wav", StringUtils.MakeValidFileName(paramDisplay), StringUtils.GetCurrentTimestamp());
AudioUtilsNAudio.CreateWaveFile(host.RecordedLeft.ToArray(), wavFilePath, new WaveFormat(host.SampleRate, 1));
// store as a png
System.Drawing.Bitmap png = AudioAnalyzer.DrawWaveformMono(host.RecordedLeft.ToArray(), new System.Drawing.Size(1000, 600), 1, host.SampleRate);
string fileName = String.Format("audio-LFO-{0}-{1}.png", StringUtils.MakeValidFileName(paramDisplay), StringUtils.GetCurrentTimestamp());
png.Save(fileName);
// clear
ClearAudio();
// wait a specfied time
System.Threading.Thread.Sleep(100);
stopwatch.Stop();
count++;
}
}
void MeasureADSRParameter(int paramName, float paramValue, string envName, bool measureRelease = false)
{
Console.Out.WriteLine("MeasureADSREntry: Measuring {0} at value {1:0.00}...", envName, paramValue);
VstHost host = VstHost.Instance;
// time how long this takes
Stopwatch stopwatch = Stopwatch.StartNew();
// init the buffers
host.ClearRecording();
host.ClearLastProcessedBuffers();
// start record
host.Record = true;
// set the parameter
PluginContext.PluginCommandStub.SetParameter(paramName, paramValue);
((HostCommandStub)PluginContext.HostCommandStub).SetParameterAutomated(paramName, paramValue);
// wait until it has started playing
while (!host.LastProcessedBufferLeftPlaying)
{
// start playing audio
Playback.Play();
// play midi
host.SendMidiNote(host.SendContinousMidiNote, host.SendContinousMidiNoteVelocity);
if (stopwatch.ElapsedMilliseconds > 5000)
{
stopwatch.Stop();
Console.Out.WriteLine("MeasureADSREntry: Playing Midi Failed!");
return;
}
System.Threading.Thread.Sleep(100);
}
if (measureRelease)
{
// release is a special case where you only measure the tail after
// a short midi signal
// therefore we need to stop the midi message here
host.SendMidiNote(host.SendContinousMidiNote, 0);
}
// wait until it has stopped playing
stopwatch.Stop();
stopwatch.Start();
while (host.LastProcessedBufferLeftPlaying)
{
if (stopwatch.ElapsedMilliseconds > 40000)
{
stopwatch.Stop();
Console.Out.WriteLine("MeasureADSREntry: Playing never stopped?!");
break;
}
}
// stop playing audio
Playback.Stop();
stopwatch.Stop();
Console.Out.WriteLine("MeasureADSREntry: Playing stopped: {0} ms.", stopwatch.ElapsedMilliseconds);
// stop recording
host.Record = false;
// wait a specfied time
System.Threading.Thread.Sleep(100);
// crop
CropAudio();
// store the duration
RetrieveDuration();
// store this in a wav ouput file.
float param = PluginContext.PluginCommandStub.GetParameter(paramName);
string wavFilePath = String.Format("{0}{1:0.00}s-{2}.wav", envName, param, StringUtils.GetCurrentTimestamp());
AudioUtilsNAudio.CreateWaveFile(host.RecordedLeft.ToArray(), wavFilePath, new WaveFormat(host.SampleRate, 1));
// store as a png
System.Drawing.Bitmap png = AudioAnalyzer.DrawWaveformMono(host.RecordedLeft.ToArray(), new System.Drawing.Size(1000, 600), 1, host.SampleRate);
string fileName = String.Format("{0}{1:0.00}s-{2}.png", envName, param, StringUtils.GetCurrentTimestamp());
png.Save(fileName);
if (!measureRelease)
{
// turn of midi unless we are measuring a release envelope
// then it should have been turned of immideately after a small signal is generated
host.SendMidiNote(host.SendContinousMidiNote, 0);
}
// clear
ClearAudio();
// wait a specfied time
System.Threading.Thread.Sleep(100);
stopwatch.Stop();
}