public OggPacket BuildCommentsPacket(Comments comments)
{
var buffer = new EncodeBuffer();
PackComment(buffer, comments);
var bytes = buffer.GetBytes();
return(new OggPacket(bytes, false, 0, 1));
}
public OggPacket BuildBooksPacket(VorbisInfo info)
{
var buffer = new EncodeBuffer(4096);
PackBooks(buffer, info);
var bytes = buffer.GetBytes();
return(new OggPacket(bytes, false, 0, 2));
}
public OggPacket BuildInfoPacket(VorbisInfo info)
{
var buffer = new EncodeBuffer();
PackInfo(buffer, info);
var bytes = buffer.GetBytes();
return(new OggPacket(bytes, false, 0, 0));
}
private byte[] PerformAnalysis(
float[][] pcm,
int pcmEnd)
{
var channels = pcm.Length;
var gmdct = new float[channels][];
var work = new int[channels][];
var floorPosts = new int[channels][][];
var localAmpMax = new float[channels];
var blockType = 0;
if (_currentWindow != 0)
{
if ((_lastWindow != 0) && (_nextWindow != 0))
{
blockType = 1;
}
}
else
{
if (!MarkEnvelope())
{
blockType = 1;
}
}
var mapping = _vorbisInfo.CodecSetup.MapParams[_currentWindow];
var psyLookup = _lookups.PsyLookup[blockType + (_currentWindow != 0 ? 2 : 0)];
var buffer = new EncodeBuffer();
TransformPcm(pcm, pcmEnd, work, gmdct, localAmpMax);
ApplyMasks(pcm, pcmEnd, mapping, floorPosts, gmdct, psyLookup, localAmpMax);
Encode(pcm, pcmEnd, buffer, mapping, work, floorPosts, psyLookup, gmdct);
return(buffer.GetBytes());
}
