1 | /* $NetBSD: ceareg.h,v 1.1 2015/03/28 14:09:59 jmcneill Exp $ */ |
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 */ |
32 | struct 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 | |