1 /*
2 * XBM parser
3 * Copyright (c) 2021 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 * XBM parser
25 */
26
28
30
36
37 #define KEY (((uint64_t)'\n' << 56) | ((uint64_t)'#' << 48) | \
38 ((uint64_t)'d' << 40) | ((uint64_t)'e' << 32) | \
39 ((uint64_t)'f' << 24) | ('i' << 16) | ('n' << 8) | \
40 ('e' << 0))
41
42 #define END ((';' << 8) | ('\n' << 0))
43
45 {
47
49
50 return 0;
51 }
52
54 const uint8_t **poutbuf, int *poutbuf_size,
55 const uint8_t *buf, int buf_size)
56 {
59 uint16_t state16 = bpc->
state16;
61
65
66 *poutbuf_size = 0;
68
69 for (;
i < buf_size;
i++) {
71 state16 = (state16 << 8) | buf[
i];
72
75
78 break;
79 }
else if (state16 ==
END) {
82 break;
83 }
84 }
85
90 *poutbuf_size = 0;
91 return buf_size;
92 }
93
94 *poutbuf = buf;
95 *poutbuf_size = buf_size;
96
97 return next;
98 }
99
106 };