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out_vorbis.h

00001 /* MuSE - Multiple Streaming Engine
00002  * Copyright (C) 2000-2002 Denis Rojo aka jaromil <jaromil@dyne.org>
00003  *
00004  * This source code is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU Public License as published 
00006  * by the Free Software Foundation; either version 2 of the License,
00007  * or (at your option) any later version.
00008  *
00009  * This source code is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00012  * Please refer to the GNU Public License for more details.
00013  *
00014  * You should have received a copy of the GNU Public License along with
00015  * this source code; if not, write to:
00016  * Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00017  *
00018  * "$Id: out_vorbis.h,v 1.3 2004/12/13 00:26:37 jaromil Exp $"
00019  *
00020  */
00021 
00022 #ifndef __OUT_VORBIS_H__
00023 #define __OUT_VORBIS_H__
00024 
00025 #include <outchannels.h>
00026 
00027 #include <config.h>
00028 #ifdef HAVE_VORBIS
00029 
00030 extern "C" {
00031 #include <vorbis/vorbisenc.h>
00032 }
00033 
00034 /* safe bounds! */
00035 #define INBUF OUT_CHUNK*sizeof(float)*8
00036 #define RSMPBUF INBUF*sizeof(float)*12
00037 
00038 class OutVorbis : public OutChannel {
00039  private:
00040   ogg_stream_state os;
00041   ogg_page               og;
00042   ogg_packet             op;
00043   
00044   vorbis_dsp_state vd;
00045   vorbis_block     vb;
00046   vorbis_info      vi;
00047   vorbis_comment   vc;
00048 
00049   ogg_packet header_main;
00050   ogg_packet header_comments;
00051   ogg_packet header_codebooks;
00052 
00053   short int header[8192];
00054   int headersize;
00055 
00056   /* the audio jumps in three buffers, with the resampling in between
00057      one step could be saved if the resampling routine would result in a bidimensional array
00058      or if vorbis library could accept interleaved float.
00059      to save steps i did my best with the pipe class, which now read in intl|bidi float. */
00060   float *pcm; /* read from pipe to here */
00061   float *rsmpled; /* resample from pcm to here */
00062   float **_intbuf; /* process from resampled to a bidimensional array here */
00063   int8_t *_pbyte;
00064   
00065   int out_chunk_len;
00066   int prepare(float *buf, float **fbuf, int num);
00067   
00068   SRC_STATE *rsmp_state;
00069   SRC_DATA rsmp_data;  
00070 
00071   bool encoder_initialized;
00072 
00073  public:
00074   OutVorbis();
00075   ~OutVorbis();
00076   int encode();
00077   bool init();
00078   void flush();
00079   
00080   bool apply_profile();
00081 
00082 
00083 };
00084 
00085 #endif
00086 #endif

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