public static WavFile ReadFile(string fileName)
{
//
// Using .WAV file format from https://ccrma.stanford.edu/courses/422/projects/WaveFormat/
//
WavFile wf = new WavFile();
using (BinaryReader br = new BinaryReader(File.Open(fileName, FileMode.Open, FileAccess.Read)))
{
char[] id = br.ReadChars(4);
if (!id.SequenceEqual(new char[] { 'R', 'I', 'F', 'F' }))
throw new FormatException("Missing RIFF header");
br.ReadUInt32(); // chunk size
id = br.ReadChars(4);
if (!id.SequenceEqual(new char[] { 'W', 'A', 'V', 'E' }))
throw new FormatException("Only WAVE format currently supported");
id = br.ReadChars(4);
if (!id.SequenceEqual(new char[] { 'f', 'm', 't', ' ' }))
throw new FormatException("Missing 'fmt ' sub-chunk");
int size = (int)br.ReadUInt32(); // sub-chunk size
if (size != 16)
throw new FormatException("Unexpected format size");
wf.AudioFormat = br.ReadUInt16();
wf.NumChannels = br.ReadUInt16();
wf.SampleRate = br.ReadUInt32();
wf.ByteRate = br.ReadUInt32();
wf.BlockAlign = br.ReadUInt16();
wf.BitsPerSample = br.ReadUInt16();
id = br.ReadChars(4);
if (!id.SequenceEqual(new char[] { 'd', 'a', 't', 'a' }))
throw new FormatException("Missing 'data' sub-chunk");
size = (int)br.ReadUInt32(); // sub-chunk size
wf.Data = br.ReadBytes(size);
}
return wf;
}
public AudioContent(WavFile wavFile)
{
this.FileType = AudioFileType.Wav;
this.AudioFormat = new AudioFormat();
this.AudioFormat.Channels = wavFile.NumChannels;
this.AudioFormat.SampleRate = (int)wavFile.SampleRate;
this.AudioFormat.AverageBytesPerSecond = (int)wavFile.ByteRate;
this.AudioFormat.BlockAlign = wavFile.BlockAlign;
this.AudioFormat.BitsPerSample = wavFile.BitsPerSample;
this.LoopStart = 0;
this.LoopEnd = wavFile.Data.Length / wavFile.BlockAlign;
this.Duration = new TimeSpan(0, 0, 0, 0, (int)(((double)this.LoopEnd / (double)wavFile.SampleRate + 0.0005) * 1000));
this.Data = wavFile.Data;
}
public static WavFile ReadFile(string fileName)
{
//
// Using .WAV file format from https://ccrma.stanford.edu/courses/422/projects/WaveFormat/
//
WavFile wf = new WavFile();
using (BinaryReader br = new BinaryReader(File.Open(fileName, FileMode.Open, FileAccess.Read)))
{
char[] id = br.ReadChars(4);
if (!id.SequenceEqual(new char[] { 'R', 'I', 'F', 'F' }))
{
throw new FormatException("Missing RIFF header");
}
br.ReadUInt32(); // chunk size
id = br.ReadChars(4);
if (!id.SequenceEqual(new char[] { 'W', 'A', 'V', 'E' }))
{
throw new FormatException("Only WAVE format currently supported");
}
id = br.ReadChars(4);
if (!id.SequenceEqual(new char[] { 'f', 'm', 't', ' ' }))
{
throw new FormatException("Missing 'fmt ' sub-chunk");
}
int size = (int)br.ReadUInt32(); // sub-chunk size
if (size != 16)
{
throw new FormatException("Unexpected format size");
}
wf.AudioFormat = br.ReadUInt16();
wf.NumChannels = br.ReadUInt16();
wf.SampleRate = br.ReadUInt32();
wf.ByteRate = br.ReadUInt32();
wf.BlockAlign = br.ReadUInt16();
wf.BitsPerSample = br.ReadUInt16();
id = br.ReadChars(4);
if (!id.SequenceEqual(new char[] { 'd', 'a', 't', 'a' }))
{
throw new FormatException("Missing 'data' sub-chunk");
}
size = (int)br.ReadUInt32(); // sub-chunk size
wf.Data = br.ReadBytes(size);
}
return(wf);
}
