1 /*
2 * Copyright (c) 2012 Clément Bœsch
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 /**
22 * @file
23 * WebVTT subtitle decoder
24 * @see http://dev.w3.org/html5/webvtt/
25 * @todo need to support extended markups and cue settings
26 */
27
32
33 static const struct {
37 {"<i>", "{\\i1}"}, {"</i>", "{\\i0}"},
38 {"<b>", "{\\b1}"}, {"</b>", "{\\b0}"},
39 {"<u>", "{\\u1}"}, {"</u>", "{\\u0}"},
40 {"{", "\\{"}, {"}", "\\}"}, // escape to avoid ASS markup conflicts
41 {">", ">"}, {"<", "<"},
42 {"‎", ""}, {"‏", ""}, // FIXME: properly honor bidi marks
43 {"&", "&"}, {" ", "\\h"},
44 };
45
47 {
48 int i,
again = 0, skip = 0;
49
50 while (*p) {
51
54 const size_t len = strlen(
from);
59 break;
60 }
61 }
62 if (!*p)
63 break;
64
67 skip = 0;
68 continue;
69 }
70 if (*p == '<')
71 skip = 1;
72 else if (*p == '>')
73 skip = 0;
74 else if (p[0] == '\n' && p[1])
76 else if (!skip && *p != '\r')
78 p++;
79 }
80 return 0;
81 }
82
84 int *got_sub_ptr,
const AVPacket *avpkt)
85 {
87 const char *ptr = avpkt->
data;
89 AVBPrint buf;
90
97 *got_sub_ptr =
sub->num_rects > 0;
99 }
100
111 };