public WaveFile(int sampleRate, short bitsPerSample, short channels, ushort audioFormat)
{
m_waveHeader = new RiffHeaderChunk("WAVE");
m_waveFormat = new WaveFormatChunk(sampleRate, bitsPerSample, channels, audioFormat);
m_waveData = new WaveDataChunk(m_waveFormat);
}
public WaveFile(RiffHeaderChunk waveHeader, WaveFormatChunk waveFormat, WaveDataChunk waveData)
{
m_waveHeader = waveHeader;
m_waveFormat = waveFormat;
m_waveData = waveData;
}
/// <summary>
/// Creates a new empty in-memory wave file using standard CD quality settings.
/// </summary>
public WaveFile()
{
m_waveHeader = new RiffHeaderChunk("WAVE");
m_waveFormat = new WaveFormatChunk(44100, 16, 2, 0x1);
m_waveData = new WaveDataChunk(m_waveFormat);
}
/// <summary>
/// Creates a new in-memory wave loaded from an existing wave audio stream.
/// </summary>
/// <param name="source">Stream of WAV formatted audio data to load.</param>
/// <returns>In-memory representation of wave file.</returns>
public static WaveFile Load(Stream source)
{
RiffChunk riffChunk;
RiffHeaderChunk waveHeader = null;
WaveFormatChunk waveFormat = null;
WaveDataChunk waveData = null;
while (waveData == null)
{
riffChunk = RiffChunk.ReadNext(source);
switch (riffChunk.TypeID)
{
case RiffHeaderChunk.RiffTypeID:
waveHeader = new RiffHeaderChunk(riffChunk, source, "WAVE");
break;
case WaveFormatChunk.RiffTypeID:
if (waveHeader == null)
throw new InvalidDataException("WAVE format section encountered before RIFF header, wave file corrupted");
waveFormat = new WaveFormatChunk(riffChunk, source);
break;
case WaveDataChunk.RiffTypeID:
if (waveFormat == null)
throw new InvalidDataException("WAVE data section encountered before format section, wave file corrupted");
waveData = new WaveDataChunk(riffChunk, source, waveFormat);
break;
default:
// Skip unidentified section
source.Seek(riffChunk.ChunkSize, SeekOrigin.Current);
break;
}
}
return new WaveFile(waveHeader, waveFormat, waveData);
}
public WaveFile(RiffHeaderChunk waveHeader, WaveFormatChunk waveFormat, WaveDataChunk waveData, ListInfoChunk listInfo = null)
{
m_waveHeader = waveHeader;
m_waveFormat = waveFormat;
m_waveData = waveData;
m_listInfo = listInfo;
}
/// <summary>
/// Creates a new in-memory wave loaded from an existing wave audio stream.
/// </summary>
/// <param name="source">Stream of WAV formatted audio data to load.</param>
/// <param name="loadData">Determines if wave data should be loaded into memory.</param>
/// <returns>In-memory representation of wave file.</returns>
public static WaveFile Load(Stream source, bool loadData = true)
{
RiffChunk riffChunk;
RiffHeaderChunk waveHeader = null;
WaveFormatChunk waveFormat = null;
WaveDataChunk waveData = null;
ListInfoChunk listInfo = null;
while (source.Position < source.Length)
{
riffChunk = RiffChunk.ReadNext(source);
switch (riffChunk.TypeID)
{
case RiffHeaderChunk.RiffTypeID:
waveHeader = new RiffHeaderChunk(riffChunk, source, "WAVE");
break;
case WaveFormatChunk.RiffTypeID:
if ((object)waveHeader == null)
throw new InvalidDataException("WAVE format section encountered before RIFF header, wave file corrupted");
waveFormat = new WaveFormatChunk(riffChunk, source);
break;
case WaveDataChunk.RiffTypeID:
if ((object)waveFormat == null)
throw new InvalidDataException("WAVE data section encountered before format section, wave file corrupted");
if (loadData)
{
waveData = new WaveDataChunk(riffChunk, source, waveFormat);
}
else
{
source.Seek(riffChunk.ChunkSize, SeekOrigin.Current);
waveData = new WaveDataChunk(waveFormat);
waveData.ChunkSize = riffChunk.ChunkSize;
}
break;
case ListInfoChunk.RiffTypeID:
listInfo = new ListInfoChunk(riffChunk, source);
break;
default:
// Skip unidentified section
source.Seek(riffChunk.ChunkSize, SeekOrigin.Current);
break;
}
}
return new WaveFile(waveHeader, waveFormat, waveData, listInfo);
}
/// <summary>Creates a new in-memory wave loaded from an existing wave file.</summary>
/// <param name="waveFileName">File name of WAV file to load.</param>
/// <returns>In-memory representation of wave file.</returns>
public static WaveFile Load(string waveFileName)
{
FileStream source = File.Open(waveFileName, FileMode.Open, FileAccess.Read, FileShare.Read);
RiffChunk riffChunk;
RiffHeaderChunk waveHeader = null;
WaveFormatChunk waveFormat = null;
WaveDataChunk waveData = null;
while (waveData == null)
{
riffChunk = RiffChunk.ReadNext(source);
switch (riffChunk.TypeID)
{
case RiffHeaderChunk.RiffTypeID:
waveHeader = new RiffHeaderChunk(riffChunk, source, "WAVE");
break;
case WaveFormatChunk.RiffTypeID:
if (waveHeader == null)
throw new InvalidDataException("WAVE format section encountered before RIFF header, wave file corrupted.");
waveFormat = new WaveFormatChunk(riffChunk, source);
break;
case WaveDataChunk.RiffTypeID:
if (waveFormat == null)
throw new InvalidDataException("WAVE data section encountered before format section, wave file corrupted.");
waveData = new WaveDataChunk(riffChunk, source, waveFormat);
break;
default:
break;
}
}
return new WaveFile(waveHeader, waveFormat, waveData);
}
