98c4f65f3a
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@5955 a1c6a512-1295-4272-9138-f99709370657
69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/*
|
|
* libmad - MPEG audio decoder library
|
|
* Copyright (C) 2000-2004 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
|
|
*
|
|
* $Id$
|
|
*/
|
|
|
|
# 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
|