private void PreScanFile(Stream stream)
{
while (_frameInfoCollection.AddFromMP3Stream(stream))
{
;
}
}
private void ParseForMP3Frame(Stream stream)
{
if (_parsedStream)
{
return;
}
MP3Frame frame = null;
long offsetOfFirstFrame = 0;
while (frame == null && !stream.IsEndOfStream())
{
offsetOfFirstFrame = stream.Position;
frame = MP3Frame.FromStream(stream);
}
if (frame == null)
{
throw new MP3Exception("Could not find any MP3-Frames in the stream.");
}
XingHeader xingHeader = XingHeader.FromFrame(frame);
if (xingHeader != null)
{
offsetOfFirstFrame = stream.Position;
}
_inputFormat = new MP3Format(frame.SampleRate, frame.ChannelCount, frame.FrameLength, frame.BitRate); //implement VBR?
//Prescan stream
_frameInfoCollection = new FrameInfoCollection();
while (_frameInfoCollection.AddFromMP3Stream(stream))
{
;
}
stream.Position = offsetOfFirstFrame;
_parsedStream = true;
}