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#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#define CODEC2_EXTRADATA_SIZE 4
49
50//Used in codec2raw demuxer and libcodec2 encoder
51static inline void codec2_make_extradata(uint8_t *ptr, int mode) {
52    //version 0.8 as of 2017-12-23 (r3386)
53    ptr[0] = 0;     //major
54    ptr[1] = 8;     //minor
55    ptr[2] = mode;  //mode
56    ptr[3] = 0;     //flags
57}
58
59static inline uint8_t codec2_mode_from_extradata(uint8_t *ptr) {
60    return ptr[2];
61}
62
63#endif /* AVCODEC_CODEC2UTILS_H */
64