private void ParseFmt(Riff.RiffReader reader)
{
Ibasa.IO.BinaryReader binreader = new IO.BinaryReader(reader.Data);
FormatTag tag;
int channels, bytesPerSecond, blockAlignment, bitsPerSample, size;
if (reader.Length < 16)
{
throw new System.IO.InvalidDataException("Invalid fmt chunk.");
}
else
{
tag = (FormatTag)binreader.ReadInt16();
channels = binreader.ReadInt16();
Frequency = binreader.ReadInt32();
bytesPerSecond = binreader.ReadInt32();
blockAlignment = binreader.ReadInt16();
bitsPerSample = binreader.ReadInt16();
}
if (reader.Length >= 18)
{
size = binreader.ReadInt16();
}
if (tag == FormatTag.Pcm)
{
if (bitsPerSample == 8)
{
Format = new Ibasa.SharpAL.Formats.Pcm8(channels);
}
else if (bitsPerSample == 16)
{
Format = new Ibasa.SharpAL.Formats.Pcm16(channels);
}
else
{
throw new NotSupportedException(string.Format("PCM {0} bit data is not supported.", bitsPerSample));
}
}
else
{
throw new NotSupportedException(string.Format("{0} is not supported.", tag));
}
}
public Wav(System.IO.Stream stream)
{
Stream = stream;
Riff.RiffReader reader = new Riff.RiffReader(stream);
if (!reader.Read() || !reader.Type.HasValue || reader.Type.Value != "WAVE")
{
throw new System.IO.InvalidDataException("Not a WAVE stream.");
}
while (reader.Read())
{
if (reader.Id == "fmt ")
{
ParseFmt(reader);
}
if (reader.Id == "data")
{
ParseData(reader);
}
}
}
public Wav(System.IO.Stream stream)
{
Stream = stream;
Riff.RiffReader reader = new Riff.RiffReader(stream);
if (!reader.Read() || !reader.Type.HasValue || reader.Type.Value != "WAVE")
{
throw new System.IO.InvalidDataException("Not a WAVE stream.");
}
while (reader.Read())
{
if (reader.Id == "fmt ")
{
ParseFmt(reader);
}
if (reader.Id == "data")
{
ParseData(reader);
}
}
}
private void ParseData(Riff.RiffReader reader)
{
DataOffset = reader.Offset;
DataLength = reader.Length;
}