synth.h
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- /*
- * libmad - MPEG audio decoder library
- * Copyright (C) 2000-2003 Underbit Technologies, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * $Id: synth.h,v 1.1 2003/08/31 19:00:17 gabest Exp $
- */
- # ifndef LIBMAD_SYNTH_H
- # define LIBMAD_SYNTH_H
- # include "fixed.h"
- # include "frame.h"
- struct mad_pcm {
- unsigned int samplerate; /* sampling frequency (Hz) */
- unsigned short channels; /* number of channels */
- unsigned short length; /* number of samples per channel */
- mad_fixed_t samples[2][1152]; /* PCM output samples [ch][sample] */
- };
- struct mad_synth {
- mad_fixed_t filter[2][2][2][16][8]; /* polyphase filterbank outputs */
- /* [ch][eo][peo][s][v] */
- unsigned int phase; /* current processing phase */
- struct mad_pcm pcm; /* PCM output */
- };
- /* single channel PCM selector */
- enum {
- MAD_PCM_CHANNEL_SINGLE = 0
- };
- /* dual channel PCM selector */
- enum {
- MAD_PCM_CHANNEL_DUAL_1 = 0,
- MAD_PCM_CHANNEL_DUAL_2 = 1
- };
- /* stereo PCM selector */
- enum {
- MAD_PCM_CHANNEL_STEREO_LEFT = 0,
- MAD_PCM_CHANNEL_STEREO_RIGHT = 1
- };
- void mad_synth_init(struct mad_synth *);
- # define mad_synth_finish(synth) /* nothing */
- void mad_synth_mute(struct mad_synth *);
- void mad_synth_frame(struct mad_synth *, struct mad_frame const *);
- # endif