FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavformat/replaygain.c
Date: 2022-12-09 07:38:14
Exec Total Coverage
Lines: 17 37 45.9%
Functions: 3 3 100.0%
Branches: 7 26 26.9%

Line Branch Exec Source
1 /*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 /**
20 * @file
21 * replaygain tags parsing
22 */
23
24 #include <stdint.h>
25 #include <stdlib.h>
26 #include <string.h>
27
28 #include "libavutil/avstring.h"
29 #include "libavutil/dict.h"
30 #include "libavutil/intreadwrite.h"
31 #include "libavutil/mathematics.h"
32 #include "libavutil/replaygain.h"
33
34 #include "avformat.h"
35 #include "internal.h"
36 #include "replaygain.h"
37
38 1288 static int32_t parse_value(const char *value, int32_t min)
39 {
40 char *fraction;
41 1288 int scale = 10000;
42 1288 int32_t mb = 0;
43 1288 int sign = 1;
44 int db;
45
46
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1288 if (!value)
47 1288 return min;
48
49 value += strspn(value, " \t");
50
51 if (*value == '-')
52 sign = -1;
53
54 db = strtol(value, &fraction, 0);
55 if (*fraction++ == '.') {
56 while (av_isdigit(*fraction) && scale) {
57 mb += scale * (*fraction - '0');
58 scale /= 10;
59 fraction++;
60 }
61 }
62
63 if (llabs(db) > (INT32_MAX - mb) / 100000)
64 return min;
65
66 return db * 100000 + sign * mb;
67 }
68
69 334 int ff_replaygain_export_raw(AVStream *st, int32_t tg, uint32_t tp,
70 int32_t ag, uint32_t ap)
71 {
72 AVReplayGain *replaygain;
73
74
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334 if (tg == INT32_MIN && ag == INT32_MIN)
75 334 return 0;
76
77 replaygain = (AVReplayGain*)av_stream_new_side_data(st, AV_PKT_DATA_REPLAYGAIN,
78 sizeof(*replaygain));
79 if (!replaygain)
80 return AVERROR(ENOMEM);
81
82 replaygain->track_gain = tg;
83 replaygain->track_peak = tp;
84 replaygain->album_gain = ag;
85 replaygain->album_peak = ap;
86
87 return 0;
88 }
89
90 322 int ff_replaygain_export(AVStream *st, AVDictionary *metadata)
91 {
92 const AVDictionaryEntry *tg, *tp, *ag, *ap;
93
94 322 tg = av_dict_get(metadata, "REPLAYGAIN_TRACK_GAIN", NULL, 0);
95 322 tp = av_dict_get(metadata, "REPLAYGAIN_TRACK_PEAK", NULL, 0);
96 322 ag = av_dict_get(metadata, "REPLAYGAIN_ALBUM_GAIN", NULL, 0);
97 322 ap = av_dict_get(metadata, "REPLAYGAIN_ALBUM_PEAK", NULL, 0);
98
99
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644 return ff_replaygain_export_raw(st,
100 parse_value(tg ? tg->value : NULL, INT32_MIN),
101
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322 parse_value(tp ? tp->value : NULL, 0),
102 parse_value(ag ? ag->value : NULL, INT32_MIN),
103
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322 parse_value(ap ? ap->value : NULL, 0));
104 }
105