public unsafe WaveFile(Stream s)
{
using (BinaryReader br = new BinaryReader(s))
{
RIFFChunkDescriptor riffChunkDescriptor = br.ReadStruct <RIFFChunkDescriptor>();
string id = Encoding.ASCII.GetString(riffChunkDescriptor.ChunkID, 4);
if (id != "RIFF")
{
throw new InvalidOperationException("Not a valid wave file ID: " + id);
}
string format = Encoding.ASCII.GetString(riffChunkDescriptor.Format, 4);
if (format != "WAVE")
{
throw new InvalidOperationException("Not a valid wave file format : " + format);
}
FmtSubChunk fmtSubChunk = br.ReadStruct <FmtSubChunk>();
string fmtChunkID = Encoding.ASCII.GetString(fmtSubChunk.Subchunk1ID, 4);
if (fmtChunkID != "fmt ")
{
throw new InvalidOperationException("Not a supported fmt sub-chunk ID: " + fmtChunkID);
}
Format = MapFormat(fmtSubChunk.NumChannels, fmtSubChunk.BitsPerSample);
Frequency = fmtSubChunk.SampleRate;
// SubChunk2ID
br.ReadInt32();
int subchunk2Size = br.ReadInt32();
Data = br.ReadBytes(subchunk2Size);
SizeInBytes = subchunk2Size;
}
}
public WaveFile(Stream s)
{
using (BinaryReader br = new BinaryReader(s))
{
var riffChunkDescriptor = new RIFFChunkDescriptor()
{
ChunkID = new byte[4],
Format = new byte[4]
};
br.Read(riffChunkDescriptor.ChunkID, 0, 4);
riffChunkDescriptor.ChunkSize = br.ReadInt32();
br.Read(riffChunkDescriptor.Format, 0, 4);
var id = Encoding.ASCII.GetString(riffChunkDescriptor.ChunkID, 0, 4);
if (id != "RIFF")
{
throw new InvalidOperationException("Not a valid wave file ID: " + id);
}
string format = Encoding.ASCII.GetString(riffChunkDescriptor.Format, 0, 4);
if (format != "WAVE")
{
throw new InvalidOperationException("Not a valid wave file format : " + format);
}
var fmtSubChunk = new FmtSubChunk()
{
Subchunk1ID = new byte[4]
};
br.Read(fmtSubChunk.Subchunk1ID, 0, 4);
fmtSubChunk.Subchunk1Size = br.ReadInt32();
fmtSubChunk.AudioFormat = br.ReadInt16();
fmtSubChunk.NumChannels = br.ReadInt16();
fmtSubChunk.SampleRate = br.ReadInt32();
fmtSubChunk.ByteRate = br.ReadInt32();
fmtSubChunk.BlockAlign = br.ReadInt16();
fmtSubChunk.BitsPerSample = br.ReadInt16();
string fmtChunkID = Encoding.ASCII.GetString(fmtSubChunk.Subchunk1ID, 0, 4);
if (fmtChunkID != "fmt ")
{
throw new InvalidOperationException("Not a supported fmt sub-chunk ID: " + fmtChunkID);
}
Format = MapFormat(fmtSubChunk.NumChannels, fmtSubChunk.BitsPerSample);
Frequency = fmtSubChunk.SampleRate;
// SubChunk2ID
br.ReadInt32();
int subchunk2Size = br.ReadInt32();
Data = br.ReadBytes(subchunk2Size);
SizeInBytes = subchunk2Size;
}
}
