libmad: synth.h Source File

00001 /*
00002  * libmad - MPEG audio decoder library
00003  * Copyright (C) 2000-2008 Underbit Technologies, Inc.
00004  *
00005  * This program is free software; you can redistribute it and/or modify
00006  * it under the terms of the GNU General Public License as published by
00007  * the Free Software Foundation; either version 2 of the License, or
00008  * (at your option) any later version.
00009  *
00010  * This program is distributed in the hope that it will be useful,
00011  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013  * GNU General Public License for more details.
00014  *
00015  * You should have received a copy of the GNU General Public License
00016  * along with this program; if not, write to the Free Software
00017  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00018  *
00019  * $Id: synth.h 88 2008-06-09 11:59:11Z mich $
00020  */
00024 # ifndef LIBMAD_SYNTH_H
00025 # define LIBMAD_SYNTH_H
00026 
00027 # include "fixed.h"
00028 # include "frame.h"
00029 
00030 struct mad_pcm {
00031   unsigned int samplerate;              
00032   unsigned short channels;              
00033   unsigned short length;                
00034   mad_fixed_t samples[2][1152];         
00035 };
00036 
00037 struct mad_synth {
00038   mad_fixed_t filter[2][2][2][16][8];   
00041   unsigned int phase;                   
00043   struct mad_pcm pcm;                   
00044 };
00045 
00047 enum {
00048   MAD_PCM_CHANNEL_SINGLE = 0
00049 };
00050 
00052 enum {
00053   MAD_PCM_CHANNEL_DUAL_1 = 0,
00054   MAD_PCM_CHANNEL_DUAL_2 = 1
00055 };
00056 
00058 enum {
00059   MAD_PCM_CHANNEL_STEREO_LEFT  = 0,
00060   MAD_PCM_CHANNEL_STEREO_RIGHT = 1
00061 };
00062 
00063 void mad_synth_init(struct mad_synth *);
00064 
00065 # define mad_synth_finish(synth)  /* nothing */
00066 
00067 void mad_synth_mute(struct mad_synth *);
00068 
00069 void mad_synth_frame(struct mad_synth *, struct mad_frame const *);
00070 
00071 # endif