/src/ffmpeg/libavcodec/assdec.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * SSA/ASS decoder |
3 | | * Copyright (c) 2010 Aurelien Jacobs <aurel@gnuage.org> |
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 | | #include <string.h> |
23 | | |
24 | | #include "avcodec.h" |
25 | | #include "ass.h" |
26 | | #include "codec_internal.h" |
27 | | #include "config_components.h" |
28 | | #include "libavutil/internal.h" |
29 | | #include "libavutil/mem.h" |
30 | | |
31 | | static av_cold int ass_decode_init(AVCodecContext *avctx) |
32 | 1.54k | { |
33 | 1.54k | avctx->subtitle_header = av_malloc(avctx->extradata_size + 1); |
34 | 1.54k | if (!avctx->subtitle_header) |
35 | 0 | return AVERROR(ENOMEM); |
36 | 1.54k | if (avctx->extradata_size) |
37 | 138 | memcpy(avctx->subtitle_header, avctx->extradata, avctx->extradata_size); |
38 | 1.54k | avctx->subtitle_header[avctx->extradata_size] = 0; |
39 | 1.54k | avctx->subtitle_header_size = avctx->extradata_size; |
40 | 1.54k | return 0; |
41 | 1.54k | } |
42 | | |
43 | | static int ass_decode_frame(AVCodecContext *avctx, AVSubtitle *sub, |
44 | | int *got_sub_ptr, const AVPacket *avpkt) |
45 | 358k | { |
46 | 358k | if (avpkt->size <= 0) |
47 | 0 | return avpkt->size; |
48 | | |
49 | 358k | sub->rects = av_malloc(sizeof(*sub->rects)); |
50 | 358k | if (!sub->rects) |
51 | 0 | return AVERROR(ENOMEM); |
52 | 358k | sub->rects[0] = av_mallocz(sizeof(*sub->rects[0])); |
53 | 358k | if (!sub->rects[0]) |
54 | 0 | return AVERROR(ENOMEM); |
55 | 358k | sub->num_rects = 1; |
56 | 358k | sub->rects[0]->type = SUBTITLE_ASS; |
57 | 358k | sub->rects[0]->ass = av_strdup(avpkt->data); |
58 | 358k | if (!sub->rects[0]->ass) |
59 | 0 | return AVERROR(ENOMEM); |
60 | 358k | *got_sub_ptr = 1; |
61 | 358k | return avpkt->size; |
62 | 358k | } |
63 | | |
64 | | #if CONFIG_SSA_DECODER |
65 | | const FFCodec ff_ssa_decoder = { |
66 | | .p.name = "ssa", |
67 | | CODEC_LONG_NAME("ASS (Advanced SubStation Alpha) subtitle"), |
68 | | .p.type = AVMEDIA_TYPE_SUBTITLE, |
69 | | .p.id = AV_CODEC_ID_ASS, |
70 | | .init = ass_decode_init, |
71 | | FF_CODEC_DECODE_SUB_CB(ass_decode_frame), |
72 | | }; |
73 | | #endif |
74 | | |
75 | | #if CONFIG_ASS_DECODER |
76 | | const FFCodec ff_ass_decoder = { |
77 | | .p.name = "ass", |
78 | | CODEC_LONG_NAME("ASS (Advanced SubStation Alpha) subtitle"), |
79 | | .p.type = AVMEDIA_TYPE_SUBTITLE, |
80 | | .p.id = AV_CODEC_ID_ASS, |
81 | | .init = ass_decode_init, |
82 | | FF_CODEC_DECODE_SUB_CB(ass_decode_frame), |
83 | | }; |
84 | | #endif |