FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/mpl2dec.c
Date: 2021-09-16 08:47:15
Exec Total Coverage
Lines: 33 34 97.1%
Branches: 27 36 75.0%

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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 * MPL2 subtitles decoder
24 *
25 * @see http://web.archive.org/web/20090328040233/http://napisy.ussbrowarek.org/mpl2-eng.html
26 */
27
28 #include "avcodec.h"
29 #include "ass.h"
30 #include "internal.h"
31 #include "libavutil/bprint.h"
32
33 4 static int mpl2_event_to_ass(AVBPrint *buf, const char *p)
34 {
35
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4 if (*p == ' ')
36 2 p++;
37
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13 while (*p) {
39 9 int got_style = 0;
40
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14 while (*p && strchr("/\\_", *p)) {
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5 if (*p == '/') av_bprintf(buf, "{\\i1}");
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3 else if (*p == '\\') av_bprintf(buf, "{\\b1}");
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1 else if (*p == '_') av_bprintf(buf, "{\\u1}");
45 5 got_style = 1;
46 5 p++;
47 }
48
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58 while (*p && *p != '|') {
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49 if (*p != '\r' && *p != '\n')
51 49 av_bprint_chars(buf, *p, 1);
52 49 p++;
53 }
54
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9 if (*p == '|') {
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5 if (got_style)
57 3 av_bprintf(buf, "{\\r}");
58 5 av_bprintf(buf, "\\N");
59 5 p++;
60 }
61 }
62
63 4 return 0;
64 }
65
66 4 static int mpl2_decode_frame(AVCodecContext *avctx, void *data,
67 int *got_sub_ptr, AVPacket *avpkt)
68 {
69 4 int ret = 0;
70 AVBPrint buf;
71 4 AVSubtitle *sub = data;
72 4 const char *ptr = avpkt->data;
73 4 FFASSDecoderContext *s = avctx->priv_data;
74
75 4 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
76
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4 if (ptr && avpkt->size > 0 && *ptr && !mpl2_event_to_ass(&buf, ptr))
77 4 ret = ff_ass_add_rect(sub, buf.str, s->readorder++, 0, NULL, NULL);
78 4 av_bprint_finalize(&buf, NULL);
79
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4 if (ret < 0)
80 return ret;
81 4 *got_sub_ptr = sub->num_rects > 0;
82 4 return avpkt->size;
83 }
84
85 const AVCodec ff_mpl2_decoder = {
86 .name = "mpl2",
87 .long_name = NULL_IF_CONFIG_SMALL("MPL2 subtitle"),
88 .type = AVMEDIA_TYPE_SUBTITLE,
89 .id = AV_CODEC_ID_MPL2,
90 .decode = mpl2_decode_frame,
91 .init = ff_ass_subtitle_header_default,
92 .flush = ff_ass_decoder_flush,
93 .priv_data_size = sizeof(FFASSDecoderContext),
94 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
95 };
96