// Constructor, sets the {@link Decoder}, the sample window size and the
// hop size for the spectra returned. Say the sample window size is 1024
// samples. To get an overlapp of 50% you specify a hop size of 512 samples,
// for 25% overlap you specify a hopsize of 256 and so on. Hop sizes are of
// course not limited to powers of 2.
//
// @param decoder The decoder to get the samples from.
// @param sampleWindowSize The sample window size.
// @param hopSize The hop size.
// @param useHamming Wheter to use hamming smoothing or not.
public SpectrumProvider(ISampleProvider decoder, int sampleWindowSize, int hopSize, bool useHamming)
{
if(decoder == null)
throw new ArgumentException("Decoder must be != null");
if(sampleWindowSize <= 0)
throw new ArgumentException("Sample window size must be > 0");
if(hopSize <= 0)
throw new ArgumentException("Hop size must be > 0");
if(sampleWindowSize < hopSize)
throw new ArgumentException("Hop size must be <= sampleSize");
this.decoder = decoder;
this.samples = new float[sampleWindowSize];
this.nextSamples = new float[sampleWindowSize];
this.tempSamples = new float[sampleWindowSize];
this.hopSize = hopSize;
fft = new FFT(sampleWindowSize, 44100);
// calculate averages based on a miminum octave width of 22 Hz
// split each octave into three bands
// this should result in 30 averages
//fft.LogAverages(22, 3);
if(useHamming)
fft.Window(FFT.HAMMING);
decoder.Read(samples, 0, samples.Length);
decoder.Read(nextSamples, 0, nextSamples.Length);
}
public int Read(float[] buffer, int offset, int count)
{
if (_playbackRate.Equals(0)) // play silence
{
for (int n = 0; n < count; n++)
{
buffer[offset++] = 0;
}
return(count);
}
if (_repositionRequested)
{
_soundTouch.Clear();
_repositionRequested = false;
}
int samplesRead = 0;
bool reachedEndOfSource = false;
while (samplesRead < count)
{
if (_soundTouch.NumberOfSamplesAvailable == 0)
{
var readFromSource = _sourceProvider.Read(_sourceReadBuffer, 0, _sourceReadBuffer.Length);
if (readFromSource > 0)
{
_soundTouch.PutSamples(_sourceReadBuffer, readFromSource / _channelCount);
}
else
{
reachedEndOfSource = true;
// we've reached the end, tell SoundTouch we're done
_soundTouch.Flush();
}
}
var desiredSampleFrames = (count - samplesRead) / _channelCount;
var received = _soundTouch.ReceiveSamples(_soundTouchReadBuffer, desiredSampleFrames) * _channelCount;
// use loop instead of Array.Copy due to WaveBuffer
for (int n = 0; n < received; n++)
{
buffer[offset + samplesRead++] = _soundTouchReadBuffer[n];
}
if (received == 0 && reachedEndOfSource)
{
break;
}
}
return(samplesRead);
}
public int Read(float[] buffer, int offset, int count)
{
var samplesRead = source.Read(buffer, offset, count);
for (int n = 0; n < samplesRead; n += channels)
{
Add(buffer[n + offset]);
}
return(samplesRead);
}
/// <summary>
/// Reads from this sample provider
/// </summary>
public int Read(float[] buffer, int offset, int count)
{
float[] inBuffer;
int inBufferOffset;
int framesRequested = count / channels;
int inNeeded = resampler.ResamplePrepare(framesRequested, outFormat.Channels, out inBuffer, out inBufferOffset);
int inAvailable = source.Read(inBuffer, inBufferOffset, inNeeded * channels) / channels;
int outAvailable = resampler.ResampleOut(buffer, offset, inAvailable, framesRequested, channels);
return(outAvailable * channels);
}
public static void AssertReadsExpected(this ISampleProvider sampleProvider, float[] expected, int readSize)
{
float[] buffer = new float[readSize];
var read = sampleProvider.Read(buffer, 0, expected.Length);
Assert.AreEqual(expected.Length, read, "Number of samples read");
for (int n = 0; n < read; n++)
{
Assert.AreEqual(expected[n], buffer[n], String.Format("Buffer at index {0}", n));
}
}
public int Read(float[] buffer, int offset, int count)
{
lock (FftQueue)
{
float[] buf = new float[count];
Array.Copy(buffer, offset, buf, 0, count);
FftQueue.Enqueue(buf);
}
return(sampleProvider.Read(buffer, offset, count));
}
public int Read(float[] buffer, int offset, int count)
{
var read =
fuente.Read(buffer, offset, count);
for (int i = 0; i < read; i++)
{
buffer[offset + i] *= volume;
}
return(read);
}
private void ExecuteWhenStateTransitionsToCrossFade(float[] buffer, int sampleCount)
{
fadeState = FadeState.FullVolume;
if (!_nondivisibleFlag)
{
var time = bytesRead * 1000 / source.WaveFormat.SampleRate * source.WaveFormat.Channels;
source = source.Skip(TimeSpan.FromMilliseconds(timetoSkip + time));
}
else
{
var tempBuffer = new float[copyofOffsetSamples];
source = source.Skip(TimeSpan.FromMilliseconds(timetoSkip));
try
{
source.Read(tempBuffer, 0, copyofOffsetSamples);
}
catch { }
var mod = bytesRead % sampleCount;
if (mod == 0)
{
var times = bytesRead / sampleCount;
for (int count = 0; count < times; count++)
{
source.Read(buffer, 0, sampleCount);
}
}
else
{
// for wasapi exlusive and non-exclusive mode
while (bytesRead > sampleCount)
{
source.Read(buffer, 0, sampleCount);
bytesRead -= sampleCount;
}
source.Read(buffer, 0, bytesRead);
}
}
}
/// <summary>
/// Reads samples from this sample provider
/// </summary>
/// <param name="buffer">Sample buffer</param>
/// <param name="offset">Offset into sample buffer</param>
/// <param name="sampleCount">Number of samples desired</param>
/// <returns>Number of samples read</returns>
public int Read(float[] buffer, int offset, int sampleCount)
{
int samplesRead = source.Read(buffer, offset, sampleCount);
if (Volume != 1f)
{
for (int n = 0; n < sampleCount; n++)
{
buffer[offset + n] *= Volume;
}
}
return samplesRead;
}
public int Read(float[] buffer, int offset, int count)
{
var read = fuente.Read(buffer, offset, count);
for (int i = 0; i < read; i++)
{
//Efecto
buffer[offset + i] *= Factor;
}
return(read);
}
public int Read(float[] buffer, int offset, int count)
{
int read = fuente.Read(buffer, offset, count);
// Aplicar el efecto
for (int i = 0; i < read; i++)
{
buffer[i + offset] *= volumen;
}
return(read);
}
public SampleBuffer(string filename)
{
_reader = new WaveFileReader(filename);
Count = (int)_reader.SampleCount;
SampleRate = _reader.WaveFormat.SampleRate;
Length = TimeSpan.FromSeconds((double)Count / SampleRate);
_sampleProvider = _reader.ToSampleProvider().ToMono();
_chunk1 = new Chunk
{
Buffer = new float[ChunkSize],
Offset = 0
};
_sampleProvider.Read(_chunk1.Buffer, 0, ChunkSize);
_chunk2 = new Chunk
{
Buffer = new float[ChunkSize],
Offset = ChunkSize
};
_sampleProvider.Read(_chunk2.Buffer, 0, ChunkSize);
}
public int Read(float[] buffer, int offset, int count)
{
int result = _sampleProvider.Read(buffer, offset, count);
// Apply the filter
for (int i = 0; i < result; ++i)
{
buffer[i] = _filter.Transform(buffer[i]);
}
return(result);
}
/// <summary>Reads `count` samples from the input and writes them into `buffer`. Will block as long as it takes for the input to buffer the requested number of samples.</summary>
/// <param name="buffer">The output array to write the read samples to.</param>
/// <param name="count">The number of samples to read.</param>
/// <returns>The number of samples that have been read. Will always equal `count` except when `StopWaiting()` has been called,in which case `Read()` returns `0`.</returns>
public int Read(float[] buffer, int count)
{
while (source.WaitForSamples(count))
{
if (stopRequested)
{
return(0);
}
}
return(samples.Read(buffer, 0, count));
}
public int Read(float[] buffer, int offset, int count)
{
int sourceSamplesRequired = count;
int outIndex = offset;
EnsureSourceBuffer(sourceSamplesRequired);
int sourceSamplesRead = source.Read(sourceBuffer, 0, sourceSamplesRequired);
int sourceSamplesWritten = Math.Min(sourceSamplesRead, (reverbBuffer.Length - revw));
Array.Copy(sourceBuffer, 0, reverbBuffer, revw, sourceSamplesWritten);
revw += sourceSamplesWritten;
if (revw >= reverbBuffer.Length)
{
revw = sourceSamplesRead - sourceSamplesWritten;
Array.Copy(sourceBuffer, sourceSamplesWritten, reverbBuffer, 0, sourceSamplesRead - sourceSamplesWritten);
}
for (int n = 0; n < sourceSamplesRead; n += channels)
{
for (int c = 0; c < channels; c++)
{
buffer[outIndex++] = sourceBuffer[n + c];
}
}
for (int ch = 0; ch < rev.Length; ch++)
{
double boost = (Loopstream.LSSettings.singleton.reverbP / 100.0);
for (int ri = 0; ri < rev[ch].Length; ri++)
{
outIndex -= sourceSamplesRead;
for (int n = 0; n < sourceSamplesRead; n += channels)
{
try
{
if (rev[ch][ri] >= reverbBuffer.Length - ch)
{
rev[ch][ri] -= reverbBuffer.Length;
}
buffer[outIndex + ch] += (float)(reverbBuffer[rev[ch][ri] + ch] * boost);
outIndex += channels;
rev[ch][ri] += channels;
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show("buffer " + (outIndex + ch) + " of " + buffer.Length + ", reverb " + (rev[ch][ri] + ch) + " of " + reverbBuffer.Length + " (" + ch + "/" + ri + ")");
}
}
boost *= (Loopstream.LSSettings.singleton.reverbS / 100.0);
}
}
return(sourceSamplesRead);
}
/// <summary>
/// Read from this sample provider
/// </summary>
public int Read(float[] buffer, int offset, int count)
{
int sampRead = sourceStream.Read(buffer, offset, count);
// ReSharper disable once CompareOfFloatsByEqualityOperator
if (pitch == 1f)
{
//Nothing to do.
return(sampRead);
}
if (waveFormat.Channels == 1)
{
var mono = new float[sampRead];
var index = 0;
for (var sample = offset; sample <= sampRead + offset - 1; sample++)
{
mono[index] = buffer[sample];
index += 1;
}
shifterLeft.PitchShift(pitch, sampRead, fftSize, osamp, waveFormat.SampleRate, mono);
index = 0;
for (var sample = offset; sample <= sampRead + offset - 1; sample++)
{
buffer[sample] = Limiter(mono[index]);
index += 1;
}
return(sampRead);
}
if (waveFormat.Channels == 2)
{
var left = new float[(sampRead >> 1)];
var right = new float[(sampRead >> 1)];
var index = 0;
for (var sample = offset; sample <= sampRead + offset - 1; sample += 2)
{
left[index] = buffer[sample];
right[index] = buffer[sample + 1];
index += 1;
}
shifterLeft.PitchShift(pitch, sampRead >> 1, fftSize, osamp, waveFormat.SampleRate, left);
shifterRight.PitchShift(pitch, sampRead >> 1, fftSize, osamp, waveFormat.SampleRate, right);
index = 0;
for (var sample = offset; sample <= sampRead + offset - 1; sample += 2)
{
buffer[sample] = Limiter(left[index]);
buffer[sample + 1] = Limiter(right[index]);
index += 1;
}
return(sampRead);
}
throw new Exception("Shifting of more than 2 channels is currently not supported.");
}
public int Read(float[] buffer, int offset, int count)
{
int read = fuente.Read(buffer, offset, count);
//Aplicar el efecto
//procesamiento
for (int i = 0; i < read; i++)
{
buffer[i + offset] *= volumen;
}
//la variable buffer modificada es la salida
return(read);
}
//en el buffer se tienen que recibir todas las muestras, el count para contarlas y el offset por si hay algun desface
public int Read(float[] buffer, int offset, int count)
{
var read = fuente.Read(buffer, offset, count);
//se recorren las muestras leidas (estan guardadas en read
for (int i = 0; i < read; i++)
{
//se modifica el buffer en la posicion offset + i porque todavia no se termina de trabajar en todas las muestras, asi que se pueden dejar algunas sin trabajar en caso de que se necesite
buffer[offset + i] *= volume;
}
//Se regresan el numero de muestras que se leyeron
return(read);
}
public int Read(float[] buffer, int offset, int count)
{
if (!IsPlaying)
{
Array.Clear(buffer, offset, count);
return(count);
}
else
{
var c = _resampled.Read(buffer, offset, count);
return(c);
}
}
/* Los valores del búffer irán directamente a la salida, el offset es para aplicar desfaces
* y count representa el número de muestras */
public int Read(float[] buffer, int offset, int count)
{
var read = fuente.Read(buffer, offset, count);
// Recorremos las muestras leídas para aplicar el efecto deseado
for (int i = 0; i < read; i++)
{
// En caso de ocupar un offset, se considera sumandoselo a la variable 'i'
buffer[offset + i] *= volume;
}
return(read);
}
public static CachedSound FromSampleProvider(ISampleProvider sampleProvider)
{
var readBuffer = new float[sampleProvider.WaveFormat.SampleRate * sampleProvider.WaveFormat.Channels];
var data = new List <float>(readBuffer.Length / 4);
int samplesRead;
while ((samplesRead = sampleProvider.Read(readBuffer, 0, readBuffer.Length)) > 0)
{
data.AddRange(readBuffer.Take(samplesRead));
}
return(new CachedSound(data.ToArray(), sampleProvider.WaveFormat));
}
public int Read(float[] buffer, int offset, int count)
{
int samplesRead = _sourceProvider.Read(buffer, offset, count);
foreach (var filter in _filters)
{
for (int i = 0; i < samplesRead; i++)
{
buffer[offset + i] = filter[(i % _sourceProvider.WaveFormat.Channels)].Transform(buffer[offset + i]);
}
}
return(samplesRead);
}
/// <summary>
/// Reads audio from this sample provider
/// </summary>
public int Read(float[] buffer, int offset, int count)
{
if (adsr.State == EnvelopeGenerator.EnvelopeState.Idle)
{
return(0); // we've finished
}
var samples = source.Read(buffer, offset, count);
for (int n = 0; n < samples; n++)
{
buffer[offset++] *= adsr.Process();
}
return(samples);
}
private void CalculateAv()
{
if (filePath == null)
{
return;
}
// Calculate average ZCR and STE for 1-second window
using (WaveFileReader reader = new WaveFileReader(filePath))
{
ISampleProvider sampleProvider = reader.ToSampleProvider();
List <double> zcrPerSecond = new List <double>();
// One second window
int windowSizeFloats = sampleProvider.WaveFormat.AverageBytesPerSecond / sizeof(float);
float[] buffer = new float[windowSizeFloats];
avZcr = 0;
avSte = 0;
int windowsCount = 0;
while (true)
{
int samplesRead = sampleProvider.Read(buffer, 0, windowSizeFloats);
if (samplesRead <= 0)
{
break;
}
// Calculate ZCR in window
double sum = 0;
for (int i = 1; i < samplesRead; i++)
{
sum += Math.Abs(Math.Sign(buffer[i]) - Math.Sign(buffer[i - 1]));
}
double value = sum * sampleProvider.WaveFormat.SampleRate / (2.0 * samplesRead);
avZcr += value;
// Calculate STE in window
sum = 0;
for (int i = 0; i < samplesRead; i++)
{
sum += buffer[i] * buffer[i];
}
value = sum / samplesRead;
avSte += value;
windowsCount++;
}
avZcr /= (double)windowsCount;
avSte /= (double)windowsCount;
}
}
public int Read(float[] buffer, int offset, int count)
{
if (_isDisposed)
{
return(0);
}
var read = _provider.Read(buffer, offset, count);
if (read == 0)
{
Dispose();
}
return(read);
}
public int Read(float[] buffer, int offset, int count)
{
var samples = _source.Read(buffer, offset, count);
if (Width > 0.0f)
{
for (int i = 0; i < samples; i++)
{
buffer[offset + i] = Process(buffer[offset + i]);
}
}
return(samples);
}
public void ReadChunk(ISampleProvider sampleProvider)
{
if (sampleProvider.Read(WindowRing, WindowRingPos, CHUNK_SIZE) != CHUNK_SIZE)
{
throw new Exception();
}
ProcessedSamples += CHUNK_SIZE;
if (ProcessedSamples >= WINDOW_SIZE)
{
AddStripe();
}
}
public int Read(float[] buffer, int offset, int sampleCount)
{
var samplesRead = _source.Read(buffer, offset, sampleCount);
if (_globalSettings.ProfileSettingsStore.GetClientSettingBool(ProfileSettingsKeys.RadioEffects))
{
if (samplesRead > 0)
{
for (var n = 0; n < sampleCount; n++)
{
var audio = (double)buffer[offset + n];
if (audio != 0)
// because we have silence in one channel (if a user picks radio left or right ear) we don't want to transform it or it'll play in both
{
if (_globalSettings.ProfileSettingsStore.GetClientSettingBool(ProfileSettingsKeys.RadioEffectsClipping))
{
if (audio > CLIPPING_MAX)
{
audio = CLIPPING_MAX;
}
else if (audio < CLIPPING_MIN)
{
audio = CLIPPING_MIN;
}
}
for (int i = 0; i < _filters.Length; i++)
{
var filter = _filters[i];
audio = filter.ProcessSample(audio);
if (double.IsNaN(audio))
{
audio = buffer[offset + n];
}
}
buffer[offset + n] = (float)audio;
}
}
}
}
// Console.WriteLine("Read:"+samplesRead+" Time - " + _stopwatch.ElapsedMilliseconds);
// _stopwatch.Restart();
//
return(samplesRead);
}
public int Read(float[] buffer, int offset, int count)
{
if ((buffer == null) || (buffer.Length < (offset + count)))
{
throw new ArgumentException(I18NString.Lookup("Audio_SoundFX_IncompleteBuffer"));
}
float[] iBuffer = new float[WaveFormat.Channels];
for (int x = 0; x < count; x++)
{
int read = source.Read(iBuffer, 0, WaveFormat.Channels);
if (read == 0)
{
return(x);
}
int totalRead = read;
while (totalRead < WaveFormat.Channels)
{
// Make sure we fully read a complete set of channel signals (unless the stream ends)
read = source.Read(iBuffer, totalRead, WaveFormat.Channels - totalRead);
if (read == 0)
{
totalRead = WaveFormat.Channels;
}
else
{
totalRead += read;
}
}
double mixed = 0.0;
for (int y = 0; y < totalRead; y++)
{
mixed += iBuffer[y];
}
buffer[offset + x] = (float)(mixed / WaveFormat.Channels);
}
return(count);
}
public void PopulateBitmapCache(TimelineEvent x)
{
if (x.Action == TimelineEventAction.PlayMp3 && !WaveBitmaps.ContainsKey(x.Parameter))
{
var reader = new Mp3FileReader(x.Parameter);
var width = ((double)reader.Length / samplesPerPixel);
var widthFloor = (int)Math.Floor(width);
Bitmap b = new Bitmap(widthFloor, 32, PixelFormat.Format16bppRgb555);
using (Graphics g = Graphics.FromImage(b))
{
g.Clear(Color.White);
ISampleProvider m = reader.ToSampleProvider();
float[] buffer = new float[reader.Length / 2];
m.Read(buffer, 0, buffer.Length);
var binCt = b.Width;
var bins = new float[binCt];
var samplesPerBin = (float)buffer.Length / binCt;
for (int i = 0; i < buffer.Length; i++)
{
var bin = (int)(Math.Floor(i / (samplesPerBin + 1)));
if (bins[bin] < buffer[i])
{
bins[bin] = buffer[i];
}
}
for (int i = 0; i < binCt; i++)
{
var centre = b.Height / 2;
var scaledBinValue = bins[i] * centre;
g.DrawLine(Pens.Black, i, centre - scaledBinValue, i, centre + scaledBinValue);
}
Bitmap c = new Bitmap(b.Width, b.Height, PixelFormat.Format1bppIndexed);
c.Palette.Entries[0] = Color.DarkGray;
c = b.Clone(new Rectangle(0, 0, b.Width, b.Height), PixelFormat.Format1bppIndexed);
WaveBitmaps.Add(x.Parameter, c);
b.Dispose();
WaveBitmapDurations.Add(x.Parameter, (float)reader.Length / (reader.WaveFormat.SampleRate * (reader.WaveFormat.BitsPerSample / 8) * reader.WaveFormat.Channels));
reader.Close();
reader.Dispose();
}
}
GC.Collect(2);
}
/// <summary>
/// Reads samples from this sample provider
/// </summary>
/// <param name="buffer">Sample buffer</param>
/// <param name="offset">Offset into sample buffer</param>
/// <param name="sampleCount">Number of samples desired</param>
/// <returns>Number of samples read</returns>
public int Read(float[] buffer, int offset, int sampleCount)
{
int samplesRead = source.Read(buffer, offset, sampleCount);
if (Volume != 1f)
{
rampGain.CalculateGainStepDelta(sampleCount);
for (int n = 0; n < sampleCount; n++)
{
buffer[offset + n] *= (float)rampGain.CurrentGain;
rampGain.CalculateNextGain();
}
}
return(samplesRead);
}
public void Read(ISampleProvider waveSampleProvider, FFTCalculated FFTCalculated)
{
float[] dummyFftArray = new float[fftBufferLength];
var dummyFftArrayLength = waveSampleProvider.Read(dummyFftArray, 0, fftBufferLength);
for (int i = 0; i < dummyFftArrayLength; i += channels) {
fftBuffer[fftBufferCurPossition].X = (float)(dummyFftArray[i] * FastFourierTransform.HammingWindow(fftBufferCurPossition, fftBufferLength));
fftBuffer[fftBufferCurPossition].Y = 0;
fftBufferCurPossition++;
if (fftBufferCurPossition >= fftBufferLength) {
fftBufferCurPossition = 0;
// 1024 = 2^10
FastFourierTransform.FFT(true, m, fftBuffer);
FFTCalculated(fftBuffer);
}
}
}