1 /*
2 * AVS3-P2/IEEE1857.10 video parser.
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
27
29 {
32 int cur = 0;
33
34 if (!pic_found) {
35 for (; cur < buf_size; ++cur) {
38 cur++;
39 pic_found = 1;
40 break;
41 }
42 }
43 }
44
45 if (pic_found) {
46 if (!buf_size)
48 for (; cur < buf_size; ++cur) {
53 return cur - 3;
54 }
55 }
56 }
57
60
62 }
63
66 {
67 if (buf_size < 5) {
68 return;
69 }
70
71 if (buf[0] == 0x0 && buf[1] == 0x0 && buf[2] == 0x1) {
74 int profile, ratecode, low_delay;
75
77
80
82 // Skip bits: level(8)
83 // progressive(1)
84 // field(1)
85 // library(2)
86 // resv(1)
87 // width(14)
88 // resv(1)
89 // height(14)
90 // chroma(2)
91 // sampe_precision(3)
93
95 int sample_precision =
get_bits(&gb, 3);
96 if (sample_precision == 1) {
98 } else if (sample_precision == 2) {
100 } else {
102 }
103 }
104
105 // Skip bits: resv(1)
106 // aspect(4)
108
110
111 // Skip bits: resv(1)
112 // bitrate_low(18)
113 // resv(1)
114 // bitrate_high(12)
116
119
122
123 s->width =
s->coded_width = avctx->
width;
124 s->height =
s->coded_height = avctx->
height;
125
127 "AVS3 parse seq HDR: profile %d; coded size: %dx%d; frame rate code: %d\n",
129
135 if (buf_size > 9) {
136 int pic_code_type = buf[8] & 0x3;
137 if (pic_code_type == 1 || pic_code_type == 3) {
139 } else {
141 }
142 }
143 }
144 }
145 }
146
147
149 const uint8_t **poutbuf, int *poutbuf_size,
150 const uint8_t *buf, int buf_size)
151 {
153 int next;
154
156 next = buf_size;
157 } else {
161 *poutbuf_size = 0;
162 return buf_size;
163 }
164 }
165
167
168 *poutbuf = buf;
169 *poutbuf_size = buf_size;
170
171 return next;
172 }
173
179 };