FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/flac.h
Date: 2022-12-09 07:38:14
Exec Total Coverage
Lines: 9 9 100.0%
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1 /*
2 * FLAC (Free Lossless Audio Codec) common stuff
3 * Copyright (c) 2008 Justin Ruggles
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 /**
23 * @file
24 * FLAC (Free Lossless Audio Codec) common stuff
25 */
26
27 #ifndef AVCODEC_FLAC_H
28 #define AVCODEC_FLAC_H
29
30 #include "libavutil/intreadwrite.h"
31
32 #define FLAC_STREAMINFO_SIZE 34
33 #define FLAC_MAX_CHANNELS 8
34 #define FLAC_MIN_BLOCKSIZE 16
35 #define FLAC_MAX_BLOCKSIZE 65535
36 #define FLAC_MIN_FRAME_SIZE 10
37
38 enum {
39 FLAC_CHMODE_INDEPENDENT = 0,
40 FLAC_CHMODE_LEFT_SIDE = 1,
41 FLAC_CHMODE_RIGHT_SIDE = 2,
42 FLAC_CHMODE_MID_SIDE = 3,
43 };
44
45 enum {
46 FLAC_METADATA_TYPE_STREAMINFO = 0,
47 FLAC_METADATA_TYPE_PADDING,
48 FLAC_METADATA_TYPE_APPLICATION,
49 FLAC_METADATA_TYPE_SEEKTABLE,
50 FLAC_METADATA_TYPE_VORBIS_COMMENT,
51 FLAC_METADATA_TYPE_CUESHEET,
52 FLAC_METADATA_TYPE_PICTURE,
53 FLAC_METADATA_TYPE_INVALID = 127
54 };
55
56 /**
57 * Parse the metadata block parameters from the header.
58 * @param[in] block_header header data, at least 4 bytes
59 * @param[out] last indicator for last metadata block
60 * @param[out] type metadata block type
61 * @param[out] size metadata block size
62 */
63 122 static av_always_inline void flac_parse_block_header(const uint8_t *block_header,
64 int *last, int *type, int *size)
65 {
66 122 int tmp = *block_header;
67
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122 if (last)
68 122 *last = tmp & 0x80;
69
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122 if (type)
70 122 *type = tmp & 0x7F;
71
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122 if (size)
72 122 *size = AV_RB24(block_header + 1);
73 122 }
74
75 #endif /* AVCODEC_FLAC_H */
76