Ejemplo n.º 1
0
        public void Encode(OggStreamState oggStreamState, VorbisBlock block, Stream stream)
        {
            OggPacket packet = new OggPacket();
            OggPage   page   = new OggPage();

            /* vorbis does some data preanalysis, then divvies up blocks for
             * more involved (potentially parallel) processing.  Get a single
             * block for encoding now */
            while (BlockOut(block))
            {
                /* analysis, assume we want to use bitrate management */
                block.Analyze();
                block.BitrateAddBlock();

                while (BitrateFlushPacket(packet) != 0)
                {
                    /* weld the packet into the bitstream */
                    NativeMethods.ogg_stream_packetin(ref oggStreamState.InternalStruct, ref packet.InternalStruct);

                    /* write out pages (if any) */
                    bool eos = false;
                    while (!eos)
                    {
                        int result = NativeMethods.ogg_stream_pageout(ref oggStreamState.InternalStruct, ref og);
                        if (result == 0)
                        {
                            break;
                        }
                        page.Write(stream);

                        /* this could be set above, but for illustrative purposes, I do
                         * it here (to show that vorbis does know where the stream ends) */

                        if (xm.ogg_page_eos(ref page.InternalStruct) != 0)
                        {
                            eos = true;
                        }
                    }
                }
            }
        }
Ejemplo n.º 2
0
 public bool BlockOut(VorbisBlock block)
 {
     return(NativeMethods.vorbis_analysis_blockout(ref InternalStruct, ref block.InternalStruct) == 1);
 }