public WaveFormat(BinaryStream stream)
{
UInt32 riffChunkSize = Riff.VerifyChunkIdAndGetSize(stream, Riff.RiffHeaderID);
Console.WriteLine("Riff Chunk Size {0}", riffChunkSize);
Riff.Verify(stream, Wave.WaveHeaderID, "Expected RIFF format to be");
UInt32 formatChunkSize = Riff.VerifyChunkIdAndGetSize(stream, Wave.FmtHeaderID);
if (formatChunkSize < 16)
{
throw new FormatException(String.Format("Expected wave 'fmt ' chunk size to be at least 16 but is {0}", formatChunkSize));
}
this.audioFormat = stream.LittleEndianReadUInt16();
this.channelCount = stream.LittleEndianReadUInt16();
this.samplesPerSecond = stream.LittleEndianReadUInt32();
this.avgBytesPerSecond = stream.LittleEndianReadUInt32();
this.blockAlign = stream.LittleEndianReadUInt16();
this.bitsPerSample = stream.LittleEndianReadUInt16();
// skip extra parameters
stream.Skip((Int32)formatChunkSize - 16);
//
this.dataChunkSize = Riff.VerifyChunkIdAndGetSize(stream, Wave.DataHeaderID);
}
public static UInt32 VerifyChunkIdAndGetSize(BinaryStream stream, Byte[] expectedChunkID)
{
Byte[] chunkID = stream.ReadFullSize(4);
if (chunkID[0] != expectedChunkID[0] || chunkID[1] != expectedChunkID[1] ||
chunkID[2] != expectedChunkID[2] || chunkID[3] != expectedChunkID[3])
{
throw new FormatException(String.Format(
"Expected chunk id to be '{0}{1}{2}{3}' (0x{4:X2}{5:X2}{6:X2}{7:X2}) but got '{8}{9}{10}{11}' (0x{12})",
(Char)expectedChunkID[0], (Char)expectedChunkID[1], (Char)expectedChunkID[2], (Char)expectedChunkID[3],
expectedChunkID[0], expectedChunkID[1], expectedChunkID[2], expectedChunkID[3],
(Char)chunkID[0], (Char)chunkID[1], (Char)chunkID[2], (Char)chunkID[3],
chunkID.ToHexString(0, 4)));
}
UInt32 size = stream.LittleEndianReadUInt32();
Console.WriteLine("RIFF '{0}{1}{2}{3}' size {4}",
(Char)chunkID[0], (Char)chunkID[1], (Char)chunkID[2], (Char)chunkID[3],
size);
return(size);
}