cannam@85: /*
cannam@85:  * libmad - MPEG audio decoder library
cannam@85:  * Copyright (C) 2000-2004 Underbit Technologies, Inc.
cannam@85:  *
cannam@85:  * This program is free software; you can redistribute it and/or modify
cannam@85:  * it under the terms of the GNU General Public License as published by
cannam@85:  * the Free Software Foundation; either version 2 of the License, or
cannam@85:  * (at your option) any later version.
cannam@85:  *
cannam@85:  * This program is distributed in the hope that it will be useful,
cannam@85:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
cannam@85:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
cannam@85:  * GNU General Public License for more details.
cannam@85:  *
cannam@85:  * You should have received a copy of the GNU General Public License
cannam@85:  * along with this program; if not, write to the Free Software
cannam@85:  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
cannam@85:  *
cannam@85:  * $Id: synth.h,v 1.15 2004/01/23 09:41:33 rob Exp $
cannam@85:  */
cannam@85: 
cannam@85: # ifndef LIBMAD_SYNTH_H
cannam@85: # define LIBMAD_SYNTH_H
cannam@85: 
cannam@85: # include "fixed.h"
cannam@85: # include "frame.h"
cannam@85: 
cannam@85: struct mad_pcm {
cannam@85:   unsigned int samplerate;		/* sampling frequency (Hz) */
cannam@85:   unsigned short channels;		/* number of channels */
cannam@85:   unsigned short length;		/* number of samples per channel */
cannam@85:   mad_fixed_t samples[2][1152];		/* PCM output samples [ch][sample] */
cannam@85: };
cannam@85: 
cannam@85: struct mad_synth {
cannam@85:   mad_fixed_t filter[2][2][2][16][8];	/* polyphase filterbank outputs */
cannam@85:   					/* [ch][eo][peo][s][v] */
cannam@85: 
cannam@85:   unsigned int phase;			/* current processing phase */
cannam@85: 
cannam@85:   struct mad_pcm pcm;			/* PCM output */
cannam@85: };
cannam@85: 
cannam@85: /* single channel PCM selector */
cannam@85: enum {
cannam@85:   MAD_PCM_CHANNEL_SINGLE = 0
cannam@85: };
cannam@85: 
cannam@85: /* dual channel PCM selector */
cannam@85: enum {
cannam@85:   MAD_PCM_CHANNEL_DUAL_1 = 0,
cannam@85:   MAD_PCM_CHANNEL_DUAL_2 = 1
cannam@85: };
cannam@85: 
cannam@85: /* stereo PCM selector */
cannam@85: enum {
cannam@85:   MAD_PCM_CHANNEL_STEREO_LEFT  = 0,
cannam@85:   MAD_PCM_CHANNEL_STEREO_RIGHT = 1
cannam@85: };
cannam@85: 
cannam@85: void mad_synth_init(struct mad_synth *);
cannam@85: 
cannam@85: # define mad_synth_finish(synth)  /* nothing */
cannam@85: 
cannam@85: void mad_synth_mute(struct mad_synth *);
cannam@85: 
cannam@85: void mad_synth_frame(struct mad_synth *, struct mad_frame const *);
cannam@85: 
cannam@85: # endif