| Line | Branch | Exec | Source |
|---|---|---|---|
| 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 | * SubViewer subtitle decoder | ||
| 24 | * @see https://en.wikipedia.org/wiki/SubViewer | ||
| 25 | */ | ||
| 26 | |||
| 27 | #include "avcodec.h" | ||
| 28 | #include "ass.h" | ||
| 29 | #include "codec_internal.h" | ||
| 30 | #include "libavutil/bprint.h" | ||
| 31 | |||
| 32 | 3 | static int subviewer_event_to_ass(AVBPrint *buf, const char *p) | |
| 33 | { | ||
| 34 |
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56 | while (*p) { |
| 35 |
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53 | if (!strncmp(p, "[br]", 4)) { |
| 36 | 3 | av_bprintf(buf, "\\N"); | |
| 37 | 3 | p += 4; | |
| 38 | } else { | ||
| 39 |
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50 | if (p[0] == '\n' && p[1]) |
| 40 | 2 | av_bprintf(buf, "\\N"); | |
| 41 |
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48 | else if (*p != '\n' && *p != '\r') |
| 42 | 48 | av_bprint_chars(buf, *p, 1); | |
| 43 | 50 | p++; | |
| 44 | } | ||
| 45 | } | ||
| 46 | |||
| 47 | 3 | return 0; | |
| 48 | } | ||
| 49 | |||
| 50 | 3 | static int subviewer_decode_frame(AVCodecContext *avctx, AVSubtitle *sub, | |
| 51 | int *got_sub_ptr, const AVPacket *avpkt) | ||
| 52 | { | ||
| 53 | 3 | int ret = 0; | |
| 54 | 3 | const char *ptr = avpkt->data; | |
| 55 | 3 | FFASSDecoderContext *s = avctx->priv_data; | |
| 56 | AVBPrint buf; | ||
| 57 | |||
| 58 | 3 | av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED); | |
| 59 |
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3 | if (ptr && avpkt->size > 0 && !subviewer_event_to_ass(&buf, ptr)) |
| 60 | 3 | ret = ff_ass_add_rect(sub, buf.str, s->readorder++, 0, NULL, NULL); | |
| 61 | 3 | av_bprint_finalize(&buf, NULL); | |
| 62 |
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3 | if (ret < 0) |
| 63 | ✗ | return ret; | |
| 64 | 3 | *got_sub_ptr = sub->num_rects > 0; | |
| 65 | 3 | return avpkt->size; | |
| 66 | } | ||
| 67 | |||
| 68 | const FFCodec ff_subviewer_decoder = { | ||
| 69 | .p.name = "subviewer", | ||
| 70 | CODEC_LONG_NAME("SubViewer subtitle"), | ||
| 71 | .p.type = AVMEDIA_TYPE_SUBTITLE, | ||
| 72 | .p.id = AV_CODEC_ID_SUBVIEWER, | ||
| 73 | FF_CODEC_DECODE_SUB_CB(subviewer_decode_frame), | ||
| 74 | .init = ff_ass_subtitle_header_default, | ||
| 75 | .flush = ff_ass_decoder_flush, | ||
| 76 | .priv_data_size = sizeof(FFASSDecoderContext), | ||
| 77 | }; | ||
| 78 |