allow streaming small sound file

[dzosz]

No description provided.

[sprunk]

1. What if it's a big sound file but decoding fails?
2. I slightly dislike this cast, especially since it doesn't allow any error handling. How about something like

int numDecodedStreams = 1;
if (DecodeStream(buffers[1])) {
  ++ numDecodedStreams;
} else {
  // did it fail, or was it just a very small file?
}

[dzosz]

1. It's not a major change. Current implementation requires at least 2 valid chunks to play a sound, this changes it to 1 chunk. If any of the subsequent chunks fail (3rd, 4th or 300th) in function UpdateBuffers we would assume the stream is finished as we don't do any error checking there as well.

The decoder is doing some initial checks on the file in function LoadData() which checks validity of the file.