private byte[] GetBytesOfSong(string songPath)
{
var songFile = new AudioFileReader(songPath);
var song = songFile.ToMono();
var song16 = song.ToWaveProvider16();
var buffer = new byte[2048];
var offset = 0;
while (true)
{
var written = song16.Read(buffer, offset, buffer.Length - offset);
if (written == 0)
{
break;
}
offset += written;
Array.Resize(ref buffer, buffer.Length * 2);
}
//trim 0s
var firstIndex = 0;
var lastIndex = buffer.Length - 1;
while (buffer[firstIndex] == 0)
{
firstIndex++;
}
while (buffer[lastIndex] == 0)
{
lastIndex--;
}
var songBytes = new byte[lastIndex - firstIndex];
for (int write = 0, read = firstIndex; write < songBytes.Length; write++, read++)
{
songBytes[write] = buffer[read];
}
return(songBytes);
}
public static List <float> ReadSamples(string path, int sampleRate)
{
path = path ?? throw new ArgumentNullException();
ThrowUtils.ThrowIf_FileNotExist(path);
AudioFileReader reader = new AudioFileReader(path);
ThrowUtils.ThrowIf_True(reader.WaveFormat.SampleRate != sampleRate,
"reader.WaveFormat.SampleRate != sampleRate ({0} != {1})".Format(reader.WaveFormat.SampleRate, sampleRate));
int totalSamples = (reader.TotalTime.TotalSeconds * sampleRate).ToInt32();
reader.Volume = 1;
float[] buff = new float[totalSamples];
var count = reader.ToMono(1, 0).Read(buff, 0, totalSamples);
return(buff.ToList());
}
public static (int sampleRate, float[] samples) GetSamples(
string pathToAudioFile)
{
using var reader = new AudioFileReader(pathToAudioFile);
var sampleProvider = reader.ToMono();
var samples =
new float[reader.Length / sizeof(float) /
reader.WaveFormat.Channels];
var samplesRead = sampleProvider.Read(samples, 0, samples.Length);
Array.Resize(ref samples, samplesRead);
if (samples.Length != samplesRead)
{
throw new Exception(
"Error when reading the samples, samples.Length=" +
samples.Length + " samplesRead=" + samplesRead);
}
return(reader.WaveFormat.SampleRate, samples);
}
