1/* $NetBSD$ */
2
3/*
4 * Copyright (c) 2011 Jared D. McNeill <jmcneill@invisible.ca>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. The name of the author may not be used to endorse or promote products
13 *    derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#ifndef _CEAREG_H
29#define _CEAREG_H
30
31/* short audio descriptor */
32struct cea_sad {
33	uint8_t	flags1;
34	uint8_t sample_rates;
35	uint8_t flags2;
36} __packed;
37
38#define	CEA_AUDIO_FORMAT(desc)	(((desc)->flags1 >> 3) & 0x0f)
39#define	 CEA_AUDIO_FORMAT_LPCM		1
40#define	 CEA_AUDIO_FORMAT_AC3		2
41#define	 CEA_AUDIO_FORMAT_MPEG1_L12	3
42#define	 CEA_AUDIO_FORMAT_MPEG1_L3	4
43#define	 CEA_AUDIO_FORMAT_MPEG2		5
44#define	 CEA_AUDIO_FORMAT_AAC		6
45#define	 CEA_AUDIO_FORMAT_DTS		7
46#define	 CEA_AUDIO_FORMAT_ATRAC		8
47#define	CEA_MAX_CHANNELS(desc)	((((desc)->flags1 >> 0) & 0x07) + 1)
48#define	CEA_SAMPLE_RATE(desc)	((desc)->sample_rates)
49#define	 CEA_SAMPLE_RATE_192K		0x40
50#define	 CEA_SAMPLE_RATE_176K		0x20
51#define	 CEA_SAMPLE_RATE_96K		0x10
52#define	 CEA_SAMPLE_RATE_88K		0x08
53#define	 CEA_SAMPLE_RATE_48K		0x04
54#define	 CEA_SAMPLE_RATE_44K		0x02
55#define	 CEA_SAMPLE_RATE_32K		0x01
56/* uncompressed */
57#define	CEA_PRECISION(desc)	((desc)->flags2 & 0x07)
58#define	 CEA_PRECISION_24BIT		0x4
59#define	 CEA_PRECISION_20BIT		0x2
60#define	 CEA_PRECISION_16BIT		0x1
61/* compressed */
62#define	CEA_MAX_BITRATE(desc)	((uint32_t)(desc)->flags2 * 8000)
63
64#endif /* !_CEAREG_H */
65