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