public bool Read(Stream stream)
{
using (BinaryReader binaryReader = new BinaryReader(stream))
{
while (stream.Position < stream.Length)
{
string chunkID;
long remaining = stream.Length - stream.Position;
var data = binaryReader.ReadBytes(4);
chunkID = System.Text.Encoding.UTF8.GetString(data);
if (data[0] == 0) // Sometimes data segment ends with a parasite null byte
{
stream.Seek(-3, SeekOrigin.Current);
data = binaryReader.ReadBytes(4);
chunkID = System.Text.Encoding.UTF8.GetString(data);
}
if (stream.Position == stream.Length)
{
return(true);
}
int chunkSize = binaryReader.ReadInt32();
Debug.WriteLine("Chunk ID: " + chunkID + "; chunk size: " + chunkSize + "; stream remaining size: " + remaining);
if (chunkID == "RIFF")
{
WaveFileFormat.Read(binaryReader);
}
else if (chunkID == "fmt ")
{
Format.Read(binaryReader, chunkSize);
}
else if (chunkID == "data")
{
if (Format.FormatCode != FormatCode.PCM)
{
Error = "Format is not PCM";
return(false);
}
ReadDataChunk(binaryReader, chunkSize);
}
else if (chunkID == "bext")
{ // Broadcast Extension
binaryReader.ReadBytes(chunkSize);
}
else if (chunkID == "JUNK")
{ //
binaryReader.ReadBytes(chunkSize);
}
else if (chunkID == "ResU")
{ //
binaryReader.ReadBytes(chunkSize);
}
else if (chunkID == "LIST")
{ //
binaryReader.ReadBytes(chunkSize);
}
else if (chunkID == "id3 ")
{ //
binaryReader.ReadBytes(chunkSize);
}
else
{ // unknown chunk - skip it...
if (chunkSize < 0 || chunkSize > remaining)
{
Error = "Chunk size error";
return(false);
}
binaryReader.ReadBytes(chunkSize);
}
}
}
return(true);
}
public WaveReader()
{
Format = new FormatChunk();
WaveFileFormat = new WaveFileFormat();
Fact = new FactChunk();
}