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#include <string.h>
23#include "internal.h"
24#include "libavcodec/codec2utils.h"
25
26#if LIBAVCODEC_VERSION_MAJOR < 59
27int avpriv_codec2_mode_bit_rate(void *logctx, int mode)
28{
29    int frame_size  = avpriv_codec2_mode_frame_size(logctx, mode);
30    int block_align = avpriv_codec2_mode_block_align(logctx, mode);
31
32    if (frame_size <= 0 || block_align <= 0) {
33        return 0;
34    }
35
36    return 8 * 8000 * block_align / frame_size;
37}
38
39int avpriv_codec2_mode_frame_size(void *logctx, int mode)
40{
41    int frame_size_table[CODEC2_MODE_MAX+1] = {
42        160,    // 3200
43        160,    // 2400
44        320,    // 1600
45        320,    // 1400
46        320,    // 1300
47        320,    // 1200
48        320,    // 700
49        320,    // 700B
50        320,    // 700C
51    };
52
53    if (mode < 0 || mode > CODEC2_MODE_MAX) {
54        av_log(logctx, AV_LOG_ERROR, "unknown codec2 mode %i, can't find frame_size\n", mode);
55        return 0;
56    } else {
57        return frame_size_table[mode];
58    }
59}
60
61int avpriv_codec2_mode_block_align(void *logctx, int mode)
62{
63    int block_align_table[CODEC2_MODE_MAX+1] = {
64        8,      // 3200
65        6,      // 2400
66        8,      // 1600
67        7,      // 1400
68        7,      // 1300
69        6,      // 1200
70        4,      // 700
71        4,      // 700B
72        4,      // 700C
73    };
74
75    if (mode < 0 || mode > CODEC2_MODE_MAX) {
76        av_log(logctx, AV_LOG_ERROR, "unknown codec2 mode %i, can't find block_align\n", mode);
77        return 0;
78    } else {
79        return block_align_table[mode];
80    }
81}
82#endif
83