public void ResumeTrack()
{
if (PlaybackState == PlaybackState.Paused)
{
trackReader.Seek(trackReaderPosition, SeekOrigin.Begin);
waveOut.Init(trackReader);
waveOut.Play();
trackReaderPosition = -1;
SpectrumVisualizer?.Resume();
PlaybackState = PlaybackState.Playing;
}
}
public override float[] ReadMonoFromFile(string pathToFile, int sampleRate, int secondsToRead, int startAtSecond)
{
using (var reader = new MediaFoundationReader(pathToFile))
{
int actualSampleRate = reader.WaveFormat.SampleRate;
int bitsPerSample = reader.WaveFormat.BitsPerSample;
reader.Seek(actualSampleRate * bitsPerSample / 8 * startAtSecond, System.IO.SeekOrigin.Begin);
using (var resampler = new MediaFoundationResampler(reader, WaveFormat.CreateIeeeFloatWaveFormat(sampleRate, 1)))
{
float[] buffer = new float[sampleRate * 20]; // 20 seconds buffer
List <float[]> chunks = new List <float[]>();
int totalFloatsToRead = secondsToRead == 0 ? int.MaxValue : secondsToRead * sampleRate;
int totalFloatsRead = 0;
Pcm32BitToSampleProvider pcmReader = new Pcm32BitToSampleProvider(resampler);
while (totalFloatsRead < totalFloatsToRead)
{
// get re-sampled/mono data
int floatsRead = pcmReader.Read(buffer, 0, buffer.Length);
if (floatsRead == 0)
{
break;
}
totalFloatsRead += floatsRead;
float[] chunk;
if (totalFloatsRead > totalFloatsToRead)
{
chunk = new float[(totalFloatsToRead - (totalFloatsRead - floatsRead))];
Array.Copy(buffer, chunk, totalFloatsToRead - (totalFloatsRead - floatsRead));
}
else
{
chunk = new float[floatsRead]; // each float contains 4 bytes
Array.Copy(buffer, chunk, floatsRead);
}
chunks.Add(chunk);
}
if (totalFloatsRead < (secondsToRead * sampleRate))
{
return(null); /*not enough samples to return the requested data*/
}
float[] data = ConcatenateChunksOfSamples(chunks);
return(data);
}
}
}
public override float[] ReadMonoFromFile(string pathToFile, int sampleRate, int secondsToRead, int startAtSecond)
{
using (var reader = new MediaFoundationReader(pathToFile))
{
int actualSampleRate = reader.WaveFormat.SampleRate;
int bitsPerSample = reader.WaveFormat.BitsPerSample;
reader.Seek(actualSampleRate * bitsPerSample / 8 * startAtSecond, System.IO.SeekOrigin.Begin);
using (var resampler = new MediaFoundationResampler(reader, WaveFormat.CreateIeeeFloatWaveFormat(sampleRate, 1)))
{
float[] buffer = new float[sampleRate * 20]; // 20 seconds buffer
List<float[]> chunks = new List<float[]>();
int totalFloatsToRead = secondsToRead == 0 ? int.MaxValue : secondsToRead * sampleRate;
int totalFloatsRead = 0;
Pcm32BitToSampleProvider pcmReader = new Pcm32BitToSampleProvider(resampler);
while (totalFloatsRead < totalFloatsToRead)
{
// get re-sampled/mono data
int floatsRead = pcmReader.Read(buffer, 0, buffer.Length);
if (floatsRead == 0)
{
break;
}
totalFloatsRead += floatsRead;
float[] chunk;
if (totalFloatsRead > totalFloatsToRead)
{
chunk = new float[(totalFloatsToRead - (totalFloatsRead - floatsRead))];
Array.Copy(buffer, chunk, totalFloatsToRead - (totalFloatsRead - floatsRead));
}
else
{
chunk = new float[floatsRead]; // each float contains 4 bytes
Array.Copy(buffer, chunk, floatsRead);
}
chunks.Add(chunk);
}
if (totalFloatsRead < (secondsToRead * sampleRate))
{
return null; /*not enough samples to return the requested data*/
}
float[] data = ConcatenateChunksOfSamples(chunks);
return data;
}
}
}
//Seek through song by reading the PCM stream's bitrate and multiplying it by the trackbar value.
//Start at the beginning. Make sure to set isPlaying to true.
private void trackBar1_Scroll(object sender, EventArgs e)
{
mfr.Seek(mfr.WaveFormat.AverageBytesPerSecond * positionBar.Value, SeekOrigin.Begin);
isPlaying = true;
}
public void SynchronizeReaderPositions()
{
trackReader.Seek(synchronizationReader.Position - TrackReaderPositionShift, System.IO.SeekOrigin.Begin);
}