FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavformat/avs3dec.c
Date: 2022-12-05 03:11:11
Exec Total Coverage
Lines: 25 26 96.2%
Functions: 1 1 100.0%
Branches: 21 28 75.0%

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1 /*
2 * RAW AVS3-P2/IEEE1857.10 video demuxer
3 * Copyright (c) 2020 Zhenyu Wang <wangzhenyu@pkusz.edu.cn>
4 * Bingjie Han <hanbj@pkusz.edu.cn>
5 * Huiwen Ren <hwrenx@gmail.com>
6 *
7 * This file is part of FFmpeg.
8 *
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24 #include "libavcodec/avs3.h"
25 #include "libavcodec/startcode.h"
26 #include "avformat.h"
27 #include "rawdec.h"
28
29 6782 static int avs3video_probe(const AVProbeData *p)
30 {
31 6782 const uint8_t *ptr = p->buf, *end = p->buf + p->buf_size;
32 6782 uint32_t code = -1;
33 6782 uint8_t state = 0;
34 6782 int pic = 0, seq = 0, slice_pos = 0;
35 6782 int ret = 0;
36
37
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23969 while (ptr < end) {
38 18662 ptr = avpriv_find_start_code(ptr, end, &code);
39 18662 state = code & 0xFF;
40
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18662 if ((code & 0xFFFFFF00) == 0x100) {
41
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13403 if (state < AVS3_SEQ_START_CODE) {
42
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12169 if (code < slice_pos)
43 891 return 0;
44 11278 slice_pos = code;
45 } else {
46 1234 slice_pos = 0;
47 }
48
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12512 if (state == AVS3_SEQ_START_CODE) {
49 53 seq++;
50
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53 if (*ptr != AVS3_PROFILE_BASELINE_MAIN && *ptr != AVS3_PROFILE_BASELINE_MAIN10)
51 53 return 0;
52
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12459 } else if (AVS3_ISPIC(state)) {
53 275 pic++;
54
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12184 } else if ((state == AVS3_UNDEF_START_CODE) ||
55 (state > AVS3_VIDEO_EDIT_CODE)) {
56 531 return 0;
57 }
58 }
59 }
60
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5307 if (seq && pic && av_match_ext(p->filename, "avs3")) {
62 ret = AVPROBE_SCORE_MAX;
63 }
64
65 5307 return ret;
66 }
67
68 FF_DEF_RAWVIDEO_DEMUXER(avs3, "raw AVS3-P2/IEEE1857.10", avs3video_probe, "avs3", AV_CODEC_ID_AVS3)
69