/src/ffmpeg/libavcodec/codec2utils.h
Line | Count | Source |
1 | | /* |
2 | | * codec2 utility functions |
3 | | * Copyright (c) 2017 Tomas Härdin |
4 | | * |
5 | | * This file is part of FFmpeg. |
6 | | * |
7 | | * FFmpeg is free software; you can redistribute it and/or |
8 | | * modify it under the terms of the GNU Lesser General Public |
9 | | * License as published by the Free Software Foundation; either |
10 | | * version 2.1 of the License, or (at your option) any later version. |
11 | | * |
12 | | * FFmpeg is distributed in the hope that it will be useful, |
13 | | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
15 | | * Lesser General Public License for more details. |
16 | | * |
17 | | * You should have received a copy of the GNU Lesser General Public |
18 | | * License along with FFmpeg; if not, write to the Free Software |
19 | | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
20 | | */ |
21 | | |
22 | | #ifndef AVCODEC_CODEC2UTILS_H |
23 | | #define AVCODEC_CODEC2UTILS_H |
24 | | |
25 | | #include <stdint.h> |
26 | | |
27 | | //Highest mode we're willing to use. |
28 | | //Don't want to let users accidentally produce files that can't be decoded in the future. |
29 | | //CODEC2_MODE_WB (9) is experimental/unstable as of 2017-11-23. |
30 | 2.87k | #define CODEC2_MODE_MAX 8 //CODEC2_MODE_700C |
31 | | |
32 | | //Used by both codec2raw demuxer and libcodec2 encoder. |
33 | | //The integers match the values in codec2.h, so "3200" -> CODEC2_MODE_3000 = 0 and so on. |
34 | | //It is possible that we're linked to a version of libcodec2 that lacks some of these modes. |
35 | | //For example Debian stretch ships with libcodec2.so.0.4 which lacks CODEC2_MODE_700C. |
36 | | #define CODEC2_AVOPTIONS(desc, classname, min_val, default_val, option_flags) \ |
37 | | { "mode", desc, offsetof(classname, mode), AV_OPT_TYPE_INT, {.i64 = default_val}, min_val, CODEC2_MODE_MAX, .flags=option_flags, .unit="codec2_mode"},\ |
38 | | { "3200", "3200", 0, AV_OPT_TYPE_CONST, {.i64 = 0}, .flags=option_flags, .unit="codec2_mode"},\ |
39 | | { "2400", "2400", 0, AV_OPT_TYPE_CONST, {.i64 = 1}, .flags=option_flags, .unit="codec2_mode"},\ |
40 | | { "1600", "1600", 0, AV_OPT_TYPE_CONST, {.i64 = 2}, .flags=option_flags, .unit="codec2_mode"},\ |
41 | | { "1400", "1400", 0, AV_OPT_TYPE_CONST, {.i64 = 3}, .flags=option_flags, .unit="codec2_mode"},\ |
42 | | { "1300", "1300", 0, AV_OPT_TYPE_CONST, {.i64 = 4}, .flags=option_flags, .unit="codec2_mode"},\ |
43 | | { "1200", "1200", 0, AV_OPT_TYPE_CONST, {.i64 = 5}, .flags=option_flags, .unit="codec2_mode"},\ |
44 | | { "700", "700", 0, AV_OPT_TYPE_CONST, {.i64 = 6}, .flags=option_flags, .unit="codec2_mode"},\ |
45 | | { "700B", "700B", 0, AV_OPT_TYPE_CONST, {.i64 = 7}, .flags=option_flags, .unit="codec2_mode"},\ |
46 | | { "700C", "700C", 0, AV_OPT_TYPE_CONST, {.i64 = 8}, .flags=option_flags, .unit="codec2_mode"} |
47 | | |
48 | 1.50k | #define CODEC2_EXTRADATA_SIZE 4 |
49 | | |
50 | | //Used in codec2raw demuxer and libcodec2 encoder |
51 | 0 | static inline void codec2_make_extradata(uint8_t *ptr, int mode) { |
52 | | //version 0.8 as of 2017-12-23 (r3386) |
53 | 0 | ptr[0] = 0; //major |
54 | 0 | ptr[1] = 8; //minor |
55 | 0 | ptr[2] = mode; //mode |
56 | 0 | ptr[3] = 0; //flags |
57 | 0 | } |
58 | | |
59 | 718 | static inline uint8_t codec2_mode_from_extradata(uint8_t *ptr) { |
60 | 718 | return ptr[2]; |
61 | 718 | } |
62 | | |
63 | | #endif /* AVCODEC_CODEC2UTILS_H */ |