/// <summary>
///
/// </summary>
/// <returns></returns>
/// <exception cref="Exception"></exception>
public Riff Read()
{
var riff = new Riff();
var buffer = new byte[12];
_reader.Read(buffer, 0, 12);
ParseHeader(buffer, riff);
ReadChunks(riff);
return(riff);
}
private void ReadChunks(Riff riff)
{
var buffer = new byte[8];
while (_reader.BaseStream.Position < _reader.BaseStream.Length)
{
_reader.Read(buffer, 0, 8);
var chunk = new RiffChunk();
chunk.ChunkId = string.Concat(ASCIIEncoding.ASCII.GetChars(new Span <byte>(buffer, 0, 4).ToArray()));
chunk.Length = (int)buffer[4] + 256 * (int)buffer[5] + 65536 * (int)buffer[6] + 65536 * 256 * (int)buffer[7];
chunk.Data = _reader.ReadBytes(chunk.Length);
riff.Chunks.Add(chunk);
}
}
private void ParseHeader(byte[] buffer, Riff riff)
{
riff.MagicBytes = string.Concat(ASCIIEncoding.ASCII.GetChars(new Span <byte>(buffer, 0, 4).ToArray()));
riff.DataSize = (int)buffer[4] + 256 * (int)buffer[5] + 65536 * (int)buffer[6] + 65536 * 256 * (int)buffer[7];
riff.Format = string.Concat(ASCIIEncoding.ASCII.GetChars(new Span <byte>(buffer, 8, 4).ToArray()));
}