FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/hdr_parser.c
Date: 2022-10-02 18:56:10
Exec Total Coverage
Lines: 0 24 0.0%
Branches: 0 12 0.0%

Line Branch Exec Source
1 /*
2 * Radiance HDR parser
3 * Copyright (c) 2022 Paul B Mahol
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 * Radiance HDR parser
25 */
26
27 #include "libavutil/intreadwrite.h"
28 #include "parser.h"
29
30 typedef struct HDRParseContext {
31 ParseContext pc;
32 } HDRParseContext;
33
34 static int hdr_parse(AVCodecParserContext *s, AVCodecContext *avctx,
35 const uint8_t **poutbuf, int *poutbuf_size,
36 const uint8_t *buf, int buf_size)
37 {
38 HDRParseContext *ipc = s->priv_data;
39 uint64_t state = ipc->pc.state64;
40 int next = END_NOT_FOUND, i = 0;
41
42 *poutbuf_size = 0;
43 *poutbuf = NULL;
44
45 if (s->flags & PARSER_FLAG_COMPLETE_FRAMES) {
46 next = buf_size;
47 } else {
48 for (; i < buf_size; i++) {
49 state = (state << 8) | buf[i];
50 if (state == AV_RB64("ADIANCE\n") && (i > 10 || ipc->pc.index > 10)) {
51 next = i - 10;
52 break;
53 }
54 }
55
56 ipc->pc.state64 = state;
57 if (ff_combine_frame(&ipc->pc, next, &buf, &buf_size) < 0) {
58 *poutbuf = NULL;
59 *poutbuf_size = 0;
60 return buf_size;
61 }
62 }
63
64 *poutbuf = buf;
65 *poutbuf_size = buf_size;
66
67 s->pict_type = AV_PICTURE_TYPE_I;
68 s->key_frame = 1;
69 s->duration = 1;
70
71 return next;
72 }
73
74 const AVCodecParser ff_hdr_parser = {
75 .codec_ids = { AV_CODEC_ID_RADIANCE_HDR },
76 .priv_data_size = sizeof(HDRParseContext),
77 .parser_parse = hdr_parse,
78 .parser_close = ff_parse_close,
79 };
80