Suga koubou / Mbed 2 deprecated madplayer_lpc4088

MP3 Player. You can change fwd/rev speed and skip. see: http://mbed.org/users/okini3939/notebook/lpc4088_madplayer/

Dependencies:   I2SSlave SDFileSystem TLV320 mbed

madplayer/frame.h@0:8ba6230eefbd, 2014-02-18 (annotated)

Committer:
okini3939
Date:
Tue Feb 18 00:22:50 2014 +0000
Revision:
0:8ba6230eefbd
1st build

Who changed what in which revision?

UserRevisionLine numberNew contents of line
okini3939 0:8ba6230eefbd 1 /*
okini3939 0:8ba6230eefbd 2 * libmad - MPEG audio decoder library
okini3939 0:8ba6230eefbd 3 * Copyright (C) 2000-2004 Underbit Technologies, Inc.
okini3939 0:8ba6230eefbd 4 *
okini3939 0:8ba6230eefbd 5 * This program is free software; you can redistribute it and/or modify
okini3939 0:8ba6230eefbd 6 * it under the terms of the GNU General Public License as published by
okini3939 0:8ba6230eefbd 7 * the Free Software Foundation; either version 2 of the License, or
okini3939 0:8ba6230eefbd 8 * (at your option) any later version.
okini3939 0:8ba6230eefbd 9 *
okini3939 0:8ba6230eefbd 10 * This program is distributed in the hope that it will be useful,
okini3939 0:8ba6230eefbd 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
okini3939 0:8ba6230eefbd 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
okini3939 0:8ba6230eefbd 13 * GNU General Public License for more details.
okini3939 0:8ba6230eefbd 14 *
okini3939 0:8ba6230eefbd 15 * You should have received a copy of the GNU General Public License
okini3939 0:8ba6230eefbd 16 * along with this program; if not, write to the Free Software
okini3939 0:8ba6230eefbd 17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
okini3939 0:8ba6230eefbd 18 *
okini3939 0:8ba6230eefbd 19 * $Id: frame.h,v 1.1 2010/11/23 20:12:57 andy Exp $
okini3939 0:8ba6230eefbd 20 */
okini3939 0:8ba6230eefbd 21
okini3939 0:8ba6230eefbd 22 # ifndef LIBMAD_FRAME_H
okini3939 0:8ba6230eefbd 23 # define LIBMAD_FRAME_H
okini3939 0:8ba6230eefbd 24
okini3939 0:8ba6230eefbd 25 # include "fixed.h"
okini3939 0:8ba6230eefbd 26 # include "timer.h"
okini3939 0:8ba6230eefbd 27 # include "stream.h"
okini3939 0:8ba6230eefbd 28
okini3939 0:8ba6230eefbd 29 enum mad_layer {
okini3939 0:8ba6230eefbd 30 MAD_LAYER_I = 1, /* Layer I */
okini3939 0:8ba6230eefbd 31 MAD_LAYER_II = 2, /* Layer II */
okini3939 0:8ba6230eefbd 32 MAD_LAYER_III = 3 /* Layer III */
okini3939 0:8ba6230eefbd 33 };
okini3939 0:8ba6230eefbd 34
okini3939 0:8ba6230eefbd 35 enum mad_mode {
okini3939 0:8ba6230eefbd 36 MAD_MODE_SINGLE_CHANNEL = 0, /* single channel */
okini3939 0:8ba6230eefbd 37 MAD_MODE_DUAL_CHANNEL = 1, /* dual channel */
okini3939 0:8ba6230eefbd 38 MAD_MODE_JOINT_STEREO = 2, /* joint (MS/intensity) stereo */
okini3939 0:8ba6230eefbd 39 MAD_MODE_STEREO = 3 /* normal LR stereo */
okini3939 0:8ba6230eefbd 40 };
okini3939 0:8ba6230eefbd 41
okini3939 0:8ba6230eefbd 42 enum mad_emphasis {
okini3939 0:8ba6230eefbd 43 MAD_EMPHASIS_NONE = 0, /* no emphasis */
okini3939 0:8ba6230eefbd 44 MAD_EMPHASIS_50_15_US = 1, /* 50/15 microseconds emphasis */
okini3939 0:8ba6230eefbd 45 MAD_EMPHASIS_CCITT_J_17 = 3, /* CCITT J.17 emphasis */
okini3939 0:8ba6230eefbd 46 MAD_EMPHASIS_RESERVED = 2 /* unknown emphasis */
okini3939 0:8ba6230eefbd 47 };
okini3939 0:8ba6230eefbd 48
okini3939 0:8ba6230eefbd 49 struct mad_header {
okini3939 0:8ba6230eefbd 50 enum mad_layer layer; /* audio layer (1, 2, or 3) */
okini3939 0:8ba6230eefbd 51 enum mad_mode mode; /* channel mode (see above) */
okini3939 0:8ba6230eefbd 52 int mode_extension; /* additional mode info */
okini3939 0:8ba6230eefbd 53 enum mad_emphasis emphasis; /* de-emphasis to use (see above) */
okini3939 0:8ba6230eefbd 54
okini3939 0:8ba6230eefbd 55 unsigned long bitrate; /* stream bitrate (bps) */
okini3939 0:8ba6230eefbd 56 unsigned int samplerate; /* sampling frequency (Hz) */
okini3939 0:8ba6230eefbd 57
okini3939 0:8ba6230eefbd 58 unsigned short crc_check; /* frame CRC accumulator */
okini3939 0:8ba6230eefbd 59 unsigned short crc_target; /* final target CRC checksum */
okini3939 0:8ba6230eefbd 60
okini3939 0:8ba6230eefbd 61 int flags; /* flags (see below) */
okini3939 0:8ba6230eefbd 62 int private_bits; /* private bits (see below) */
okini3939 0:8ba6230eefbd 63
okini3939 0:8ba6230eefbd 64 mad_timer_t duration; /* audio playing time of frame */
okini3939 0:8ba6230eefbd 65 };
okini3939 0:8ba6230eefbd 66
okini3939 0:8ba6230eefbd 67 struct mad_frame {
okini3939 0:8ba6230eefbd 68 struct mad_header header; /* MPEG audio header */
okini3939 0:8ba6230eefbd 69
okini3939 0:8ba6230eefbd 70 int options; /* decoding options (from stream) */
okini3939 0:8ba6230eefbd 71
okini3939 0:8ba6230eefbd 72 mad_fixed_t sbsample[2][36][32]; /* synthesis subband filter samples */
okini3939 0:8ba6230eefbd 73 mad_fixed_t overlap[2][32][18]; /* Layer III block overlap data */
okini3939 0:8ba6230eefbd 74 };
okini3939 0:8ba6230eefbd 75
okini3939 0:8ba6230eefbd 76 # define MAD_NCHANNELS(header) ((header)->mode ? 2 : 1)
okini3939 0:8ba6230eefbd 77 # define MAD_NSBSAMPLES(header) \
okini3939 0:8ba6230eefbd 78 ((header)->layer == MAD_LAYER_I ? 12 : \
okini3939 0:8ba6230eefbd 79 (((header)->layer == MAD_LAYER_III && \
okini3939 0:8ba6230eefbd 80 ((header)->flags & MAD_FLAG_LSF_EXT)) ? 18 : 36))
okini3939 0:8ba6230eefbd 81
okini3939 0:8ba6230eefbd 82 enum {
okini3939 0:8ba6230eefbd 83 MAD_FLAG_NPRIVATE_III = 0x0007, /* number of Layer III private bits */
okini3939 0:8ba6230eefbd 84 MAD_FLAG_INCOMPLETE = 0x0008, /* header but not data is decoded */
okini3939 0:8ba6230eefbd 85
okini3939 0:8ba6230eefbd 86 MAD_FLAG_PROTECTION = 0x0010, /* frame has CRC protection */
okini3939 0:8ba6230eefbd 87 MAD_FLAG_COPYRIGHT = 0x0020, /* frame is copyright */
okini3939 0:8ba6230eefbd 88 MAD_FLAG_ORIGINAL = 0x0040, /* frame is original (else copy) */
okini3939 0:8ba6230eefbd 89 MAD_FLAG_PADDING = 0x0080, /* frame has additional slot */
okini3939 0:8ba6230eefbd 90
okini3939 0:8ba6230eefbd 91 MAD_FLAG_I_STEREO = 0x0100, /* uses intensity joint stereo */
okini3939 0:8ba6230eefbd 92 MAD_FLAG_MS_STEREO = 0x0200, /* uses middle/side joint stereo */
okini3939 0:8ba6230eefbd 93 MAD_FLAG_FREEFORMAT = 0x0400, /* uses free format bitrate */
okini3939 0:8ba6230eefbd 94
okini3939 0:8ba6230eefbd 95 MAD_FLAG_LSF_EXT = 0x1000, /* lower sampling freq. extension */
okini3939 0:8ba6230eefbd 96 MAD_FLAG_MC_EXT = 0x2000, /* multichannel audio extension */
okini3939 0:8ba6230eefbd 97 MAD_FLAG_MPEG_2_5_EXT = 0x4000 /* MPEG 2.5 (unofficial) extension */
okini3939 0:8ba6230eefbd 98 };
okini3939 0:8ba6230eefbd 99
okini3939 0:8ba6230eefbd 100 enum {
okini3939 0:8ba6230eefbd 101 MAD_PRIVATE_HEADER = 0x0100, /* header private bit */
okini3939 0:8ba6230eefbd 102 MAD_PRIVATE_III = 0x001f /* Layer III private bits (up to 5) */
okini3939 0:8ba6230eefbd 103 };
okini3939 0:8ba6230eefbd 104
okini3939 0:8ba6230eefbd 105 void mad_header_init(struct mad_header *);
okini3939 0:8ba6230eefbd 106
okini3939 0:8ba6230eefbd 107 # define mad_header_finish(header) /* nothing */
okini3939 0:8ba6230eefbd 108
okini3939 0:8ba6230eefbd 109 int mad_header_decode(struct mad_header *, struct mad_stream *);
okini3939 0:8ba6230eefbd 110
okini3939 0:8ba6230eefbd 111 void mad_frame_init(struct mad_frame *);
okini3939 0:8ba6230eefbd 112 void mad_frame_finish(struct mad_frame *);
okini3939 0:8ba6230eefbd 113
okini3939 0:8ba6230eefbd 114 int mad_frame_decode(struct mad_frame *, struct mad_stream *);
okini3939 0:8ba6230eefbd 115
okini3939 0:8ba6230eefbd 116 void mad_frame_mute(struct mad_frame *);
okini3939 0:8ba6230eefbd 117
okini3939 0:8ba6230eefbd 118 # endif