Andreas Grün / Mbed 2 deprecated madplayer

MP3 Player without external hardware MP3 Player without external hardware. A software based MP3 player based on a modified version of libmad. Mono output (at the moment) via AnalogOut. Files are read from an USB drive. This is a demo program, it plays only one file at the moment. Documentation is in "main.cpp" and "config.h"

Dependencies:   mbed

synth.h@0:7627c79db971, 2010-11-26 (annotated)

Committer:
Gruenfrosch
Date:
Fri Nov 26 12:18:30 2010 +0000
Revision:
0:7627c79db971
First Version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Gruenfrosch 0:7627c79db971 1 /*
Gruenfrosch 0:7627c79db971 2 * libmad - MPEG audio decoder library
Gruenfrosch 0:7627c79db971 3 * Copyright (C) 2000-2004 Underbit Technologies, Inc.
Gruenfrosch 0:7627c79db971 4 *
Gruenfrosch 0:7627c79db971 5 * This program is free software; you can redistribute it and/or modify
Gruenfrosch 0:7627c79db971 6 * it under the terms of the GNU General Public License as published by
Gruenfrosch 0:7627c79db971 7 * the Free Software Foundation; either version 2 of the License, or
Gruenfrosch 0:7627c79db971 8 * (at your option) any later version.
Gruenfrosch 0:7627c79db971 9 *
Gruenfrosch 0:7627c79db971 10 * This program is distributed in the hope that it will be useful,
Gruenfrosch 0:7627c79db971 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
Gruenfrosch 0:7627c79db971 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
Gruenfrosch 0:7627c79db971 13 * GNU General Public License for more details.
Gruenfrosch 0:7627c79db971 14 *
Gruenfrosch 0:7627c79db971 15 * You should have received a copy of the GNU General Public License
Gruenfrosch 0:7627c79db971 16 * along with this program; if not, write to the Free Software
Gruenfrosch 0:7627c79db971 17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Gruenfrosch 0:7627c79db971 18 *
Gruenfrosch 0:7627c79db971 19 * $Id: synth.h,v 1.1 2010/11/23 20:12:57 andy Exp $
Gruenfrosch 0:7627c79db971 20 */
Gruenfrosch 0:7627c79db971 21
Gruenfrosch 0:7627c79db971 22 # ifndef LIBMAD_SYNTH_H
Gruenfrosch 0:7627c79db971 23 # define LIBMAD_SYNTH_H
Gruenfrosch 0:7627c79db971 24
Gruenfrosch 0:7627c79db971 25 # include "fixed.h"
Gruenfrosch 0:7627c79db971 26 # include "frame.h"
Gruenfrosch 0:7627c79db971 27
Gruenfrosch 0:7627c79db971 28 struct mad_pcm {
Gruenfrosch 0:7627c79db971 29 unsigned int samplerate; /* sampling frequency (Hz) */
Gruenfrosch 0:7627c79db971 30 unsigned short channels; /* number of channels */
Gruenfrosch 0:7627c79db971 31 unsigned short length; /* number of samples per channel */
Gruenfrosch 0:7627c79db971 32 mad_fixed_t samples[2][1152]; /* PCM output samples [ch][sample] */
Gruenfrosch 0:7627c79db971 33 };
Gruenfrosch 0:7627c79db971 34
Gruenfrosch 0:7627c79db971 35 struct mad_synth {
Gruenfrosch 0:7627c79db971 36 mad_fixed_t filter[2][2][2][16][8]; /* polyphase filterbank outputs */
Gruenfrosch 0:7627c79db971 37 /* [ch][eo][peo][s][v] */
Gruenfrosch 0:7627c79db971 38
Gruenfrosch 0:7627c79db971 39 unsigned int phase; /* current processing phase */
Gruenfrosch 0:7627c79db971 40
Gruenfrosch 0:7627c79db971 41 struct mad_pcm pcm; /* PCM output */
Gruenfrosch 0:7627c79db971 42 };
Gruenfrosch 0:7627c79db971 43
Gruenfrosch 0:7627c79db971 44 /* single channel PCM selector */
Gruenfrosch 0:7627c79db971 45 enum {
Gruenfrosch 0:7627c79db971 46 MAD_PCM_CHANNEL_SINGLE = 0
Gruenfrosch 0:7627c79db971 47 };
Gruenfrosch 0:7627c79db971 48
Gruenfrosch 0:7627c79db971 49 /* dual channel PCM selector */
Gruenfrosch 0:7627c79db971 50 enum {
Gruenfrosch 0:7627c79db971 51 MAD_PCM_CHANNEL_DUAL_1 = 0,
Gruenfrosch 0:7627c79db971 52 MAD_PCM_CHANNEL_DUAL_2 = 1
Gruenfrosch 0:7627c79db971 53 };
Gruenfrosch 0:7627c79db971 54
Gruenfrosch 0:7627c79db971 55 /* stereo PCM selector */
Gruenfrosch 0:7627c79db971 56 enum {
Gruenfrosch 0:7627c79db971 57 MAD_PCM_CHANNEL_STEREO_LEFT = 0,
Gruenfrosch 0:7627c79db971 58 MAD_PCM_CHANNEL_STEREO_RIGHT = 1
Gruenfrosch 0:7627c79db971 59 };
Gruenfrosch 0:7627c79db971 60
Gruenfrosch 0:7627c79db971 61 void mad_synth_init(struct mad_synth *);
Gruenfrosch 0:7627c79db971 62
Gruenfrosch 0:7627c79db971 63 # define mad_synth_finish(synth) /* nothing */
Gruenfrosch 0:7627c79db971 64
Gruenfrosch 0:7627c79db971 65 void mad_synth_mute(struct mad_synth *);
Gruenfrosch 0:7627c79db971 66
Gruenfrosch 0:7627c79db971 67 void mad_synth_frame(struct mad_synth *, struct mad_frame const *);
Gruenfrosch 0:7627c79db971 68
Gruenfrosch 0:7627c79db971 69 # endif