/// <summary>
/// ONLY WORKS WITH FLOAT DATA, AND 2 CHANNELS
/// </summary>
/// <param name="input"></param>
/// <param name="count"></param>
/// <returns></returns>
public byte[] inputResample(byte[] input, int count)
{
//provider = new RawSourceWaveStream(input, 0, count, inputFormat);
provider.AddSamples(input, 0, input.Length);
int outSamples = (int)Math.Floor(((double)outputFormat.SampleRate / (double)inputFormat.SampleRate) * count);
outFloat = new float[outSamples];
resampler.Read(outFloat, 0, outFloat.Length);
return(floats2bytes(outFloat));
}
public void CanResampleUpAndDown(int from, int to)
{
var channels = 1;
var offset = CreateSignalGenerator(@from, channels);
var resampler = new WdlResamplingSampleProvider(offset, to);
//string fileName = "From {0}"
//WaveFileWriter.CreateWaveFile16(;
var buffer = new float[to * channels];
Debug.WriteLine(String.Format("From {0} to {1}", from, to));
for (int n = 0; n < 10; n++)
{
var read = resampler.Read(buffer, 0, buffer.Length);
Debug.WriteLine(String.Format("read {0}", read));
}
}
public CachedVorbisSound(string audioFileName)
{
using (var audioFileReader = new VorbisWaveReader(audioFileName))
{
var resample = new WdlResamplingSampleProvider(audioFileReader, 44100);
WaveFormat = resample.WaveFormat;
var wholeFile = new List <float>();
var readBuffer = new float[resample.WaveFormat.SampleRate * resample.WaveFormat.Channels];
int samplesRead;
while ((samplesRead = resample.Read(readBuffer, 0, readBuffer.Length)) > 0)
{
wholeFile.AddRange(readBuffer.Take(samplesRead));
}
AudioData = wholeFile.ToArray();
}
}
public CachedSound(string audioFileName)
{
using (var audioFileReader = new AudioFileReader(audioFileName))
{
int outRate = 44100;
var resampler = new WdlResamplingSampleProvider(audioFileReader, outRate);
WaveFormat = resampler.WaveFormat;
var wholeFile = new List <float>((int)(audioFileReader.Length / 4));
var readBuffer = new float[WaveFormat.SampleRate * WaveFormat.Channels];
int samplesRead;
while ((samplesRead = resampler.Read(readBuffer, 0, readBuffer.Length)) > 0)
{
wholeFile.AddRange(readBuffer.Take(samplesRead));
}
AudioData = wholeFile.ToArray();
}
}
private static Sound LoadSoundFromFile(string filePath, bool loop)
{
using var audioFileReader = new AudioFileReader(filePath);
var resampler = new WdlResamplingSampleProvider(audioFileReader, 44100);
Sound snd = new Sound
{
WaveFormat = resampler.WaveFormat
};
List <float> wholeFile = new List <float>((int)(audioFileReader.Length / 4));
float[] readBuffer = new float[resampler.WaveFormat.SampleRate * resampler.WaveFormat.Channels];
int samplesRead;
while ((samplesRead = resampler.Read(readBuffer, 0, readBuffer.Length)) > 0)
{
wholeFile.AddRange(readBuffer.Take(samplesRead));
}
snd.AudioData = wholeFile.ToArray();
snd.Loop = loop;
return(snd);
}
private void FetchAudioFromInputBuffer()
{
if (inputBuffer != null)
{
double samplesToFetch = (inputBuffer.BufferedDuration.TotalMilliseconds - 50d) * ((internalFormatStereo.SampleRate * internalFormatStereo.Channels) / 1000d);
// CHECK FOR WHOLE NUMBER
if (samplesToFetch - (int)samplesToFetch != 0)
{
throw new ApplicationException("FetchAudioFromInputBuffer cannot fetch fractional samples. Adjust either internal sample rate or main server interval.");
}
// ONLY FETCH AUDIO IF BUFFER CONAINS ENOUGH
if (inputBuffer.BufferedBytes > samplesToFetch && inputBuffer.BufferedDuration.TotalMilliseconds > 100)
{
float[] input = new float[(int)samplesToFetch];
inputResampler.Read(input, 0, (int)samplesToFetch);
initialAudioProccessing(Converters.floats2bytes(input));
}
}
}
public static void MixToFile(IList <Channel> channels, string filename, bool applyReplayGain)
{
Console.WriteLine("Mixing per-channel data...");
// We make new readers...
var readers = new List <WaveFileReader>();
try
{
readers.AddRange(channels.Select(c => new WaveFileReader(c.Filename)));
if (applyReplayGain)
{
Console.WriteLine("Computing ReplayGain...");
// We read it in a second at a time, to calculate Replay Gains
var mixer = new MixingSampleProvider(readers.Select(x => x.ToSampleProvider().ToStereo()));
const int sampleRate = 44100;
var resampler = new WdlResamplingSampleProvider(mixer, sampleRate);
// We use a 1s buffer...
var buffer = new float[sampleRate * 2]; // *2 for stereo
var replayGain = new TrackGain(sampleRate);
for (;;)
{
int numRead = resampler.Read(buffer, 0, buffer.Length);
if (numRead == 0)
{
break;
}
// And analyze
replayGain.AnalyzeSamples(buffer, numRead);
}
// The +3 is to make it at "YouTube loudness", which is a lot louder than ReplayGain defaults to.
// TODO make this configurable?
var gain = replayGain.GetGain() + 3;
Console.WriteLine($"Applying ReplayGain ({gain:N} dB) and saving to {filename}");
// Reset the readers
foreach (var reader in readers)
{
reader.Position = 0;
}
// We make a new mixer just in case resetting the previous one is problematic...
mixer = new MixingSampleProvider(readers.Select(x => x.ToSampleProvider().ToStereo()));
var amplifier = new VolumeSampleProvider(mixer)
{
Volume = (float)Math.Pow(10, gain / 20)
};
WaveFileWriter.CreateWaveFile(filename, amplifier.ToWaveProvider());
}
else
{
var mixer = new MixingSampleProvider(readers.Select(x => x.ToSampleProvider().ToStereo()));
WaveFileWriter.CreateWaveFile(filename, mixer.ToWaveProvider());
}
}
finally
{
foreach (var reader in readers)
{
reader.Dispose();
}
}
}
