FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/vp8_parser.c
Date: 2021-09-26 18:22:30
Exec Total Coverage
Lines: 25 30 83.3%
Branches: 9 12 75.0%

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 #include "libavutil/intreadwrite.h"
20
21 #include "avcodec.h"
22
23 1456 static int parse(AVCodecParserContext *s,
24 AVCodecContext *avctx,
25 const uint8_t **poutbuf, int *poutbuf_size,
26 const uint8_t *buf, int buf_size)
27 {
28 unsigned int frame_type;
29 unsigned int profile;
30
31 1456 *poutbuf = buf;
32 1456 *poutbuf_size = buf_size;
33
34
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1456 if (buf_size < 3)
35 29 return buf_size;
36
37 1427 frame_type = buf[0] & 1;
38 1427 profile = (buf[0] >> 1) & 7;
39
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1427 if (profile > 3) {
40 av_log(avctx, AV_LOG_ERROR, "Invalid profile %u.\n", profile);
41 return buf_size;
42 }
43
44 1427 avctx->profile = profile;
45 1427 s->key_frame = frame_type == 0;
46
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1427 s->pict_type = frame_type ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
47 1427 s->format = AV_PIX_FMT_YUV420P;
48 1427 s->field_order = AV_FIELD_PROGRESSIVE;
49 1427 s->picture_structure = AV_PICTURE_STRUCTURE_FRAME;
50
51
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1427 if (frame_type == 0) {
52 unsigned int sync_code;
53 unsigned int width, height;
54
55
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51 if (buf_size < 10)
56 return buf_size;
57
58 51 sync_code = AV_RL24(buf + 3);
59
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51 if (sync_code != 0x2a019d) {
60 av_log(avctx, AV_LOG_ERROR, "Invalid sync code %06x.\n", sync_code);
61 return buf_size;
62 }
63
64 51 width = AV_RL16(buf + 6) & 0x3fff;
65 51 height = AV_RL16(buf + 8) & 0x3fff;
66
67 51 s->width = width;
68 51 s->height = height;
69 51 s->coded_width = FFALIGN(width, 16);
70 51 s->coded_height = FFALIGN(height, 16);
71 }
72
73 1427 return buf_size;
74 }
75
76 const AVCodecParser ff_vp8_parser = {
77 .codec_ids = { AV_CODEC_ID_VP8 },
78 .parser_parse = parse,
79 };
80