1/*
2 * BSD LICENSE
3 *
4 * mp3 header and prasing
5 * Copyright (c) 2011-2012, Intel Corporation
6 * All rights reserved.
7 *
8 * Author: Vinod Koul <vinod.koul@linux.intel.com>
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions are met:
12 *
13 * Redistributions of source code must retain the above copyright notice,
14 * this list of conditions and the following disclaimer.
15 * Redistributions in binary form must reproduce the above copyright notice,
16 * this list of conditions and the following disclaimer in the documentation
17 * and/or other materials provided with the distribution.
18 * Neither the name of Intel Corporation nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
33 *
34 * LGPL LICENSE
35 *
36 * mp3 header and parsing
37 * Copyright (c) 2011-2012, Intel Corporation.
38 *
39 *
40 * This program is free software; you can redistribute it and/or modify it
41 * under the terms and conditions of the GNU Lesser General Public License,
42 * version 2.1, as published by the Free Software Foundation.
43 *
44 * This program is distributed in the hope it will be useful, but WITHOUT
45 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
46 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
47 * License for more details.
48 *
49 * You should have received a copy of the GNU Lesser General Public License
50 * along with this program; if not, write to
51 * the Free Software Foundation, Inc.,
52 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
53 */
54
55
56#ifndef __TINYMP3_H
57#define __TINYMP3_H
58
59#if defined(__cplusplus)
60extern "C" {
61#endif
62
63
64#define MP3_SYNC 0xe0ff
65
66const int mp3_sample_rates[3][3] = {
67	{44100, 48000, 32000},        /* MPEG-1 */
68	{22050, 24000, 16000},        /* MPEG-2 */
69	{11025, 12000,  8000},        /* MPEG-2.5 */
70};
71
72const int mp3_bit_rates[3][3][15] = {
73	{
74		/* MPEG-1 */
75		{  0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448}, /* Layer 1 */
76		{  0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384}, /* Layer 2 */
77		{  0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320}, /* Layer 3 */
78	},
79	{
80		/* MPEG-2 */
81		{  0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256}, /* Layer 1 */
82		{  0,  8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160}, /* Layer 2 */
83		{  0,  8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160}, /* Layer 3 */
84	},
85	{
86		/* MPEG-2.5 */
87		{  0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256}, /* Layer 1 */
88		{  0,  8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160}, /* Layer 2 */
89		{  0,  8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160}, /* Layer 3 */
90	},
91};
92
93enum mpeg_version {
94	MPEG1  = 0,
95	MPEG2  = 1,
96	MPEG25 = 2
97};
98
99enum mp3_stereo_mode {
100	STEREO = 0x00,
101	JOINT = 0x01,
102	DUAL = 0x02,
103	MONO = 0x03
104};
105
106#endif
107