| 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 v1 subtitle demuxer | ||
| 24 | */ | ||
| 25 | |||
| 26 | #include "avformat.h" | ||
| 27 | #include "demux.h" | ||
| 28 | #include "internal.h" | ||
| 29 | #include "subtitles.h" | ||
| 30 | |||
| 31 | typedef struct { | ||
| 32 | FFDemuxSubtitlesQueue q; | ||
| 33 | } SubViewer1Context; | ||
| 34 | |||
| 35 | 7125 | static int subviewer1_probe(const AVProbeData *p) | |
| 36 | { | ||
| 37 | 7125 | const unsigned char *ptr = p->buf; | |
| 38 | |||
| 39 |
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7125 | if (strstr(ptr, "******** START SCRIPT ********")) |
| 40 | 1 | return AVPROBE_SCORE_EXTENSION; | |
| 41 | 7124 | return 0; | |
| 42 | } | ||
| 43 | |||
| 44 | 1 | static int subviewer1_read_header(AVFormatContext *s) | |
| 45 | { | ||
| 46 | 1 | int delay = 0; | |
| 47 | 1 | AVPacket *sub = NULL; | |
| 48 | 1 | SubViewer1Context *subviewer1 = s->priv_data; | |
| 49 | 1 | AVStream *st = avformat_new_stream(s, NULL); | |
| 50 | |||
| 51 |
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1 | if (!st) |
| 52 | ✗ | return AVERROR(ENOMEM); | |
| 53 | 1 | avpriv_set_pts_info(st, 64, 1, 1); | |
| 54 | 1 | st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE; | |
| 55 | 1 | st->codecpar->codec_id = AV_CODEC_ID_SUBVIEWER1; | |
| 56 | |||
| 57 |
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30 | while (!avio_feof(s->pb)) { |
| 58 | char line[4096]; | ||
| 59 | 30 | int len = ff_get_line(s->pb, line, sizeof(line)); | |
| 60 | int hh, mm, ss; | ||
| 61 | |||
| 62 |
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30 | if (!len) |
| 63 | 1 | break; | |
| 64 | |||
| 65 |
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29 | if (!strncmp(line, "[DELAY]", 7)) { |
| 66 | 1 | ff_get_line(s->pb, line, sizeof(line)); | |
| 67 | 1 | sscanf(line, "%d", &delay); | |
| 68 | } | ||
| 69 | |||
| 70 |
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29 | if (sscanf(line, "[%d:%d:%d]", &hh, &mm, &ss) == 3) { |
| 71 | 16 | const int64_t pos = avio_tell(s->pb); | |
| 72 | 16 | int64_t pts_start = hh*3600LL + mm*60LL + ss + delay; | |
| 73 | |||
| 74 | 16 | len = ff_get_line(s->pb, line, sizeof(line)); | |
| 75 | 16 | line[strcspn(line, "\r\n")] = 0; | |
| 76 |
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16 | if (!*line) { |
| 77 |
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6 | if (sub) |
| 78 | 6 | sub->duration = pts_start - sub->pts; | |
| 79 | } else { | ||
| 80 | 10 | sub = ff_subtitles_queue_insert(&subviewer1->q, line, len, 0); | |
| 81 |
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10 | if (!sub) |
| 82 | ✗ | return AVERROR(ENOMEM); | |
| 83 | 10 | sub->pos = pos; | |
| 84 | 10 | sub->pts = pts_start; | |
| 85 | 10 | sub->duration = -1; | |
| 86 | } | ||
| 87 | } | ||
| 88 | } | ||
| 89 | |||
| 90 | 1 | ff_subtitles_queue_finalize(s, &subviewer1->q); | |
| 91 | 1 | return 0; | |
| 92 | } | ||
| 93 | |||
| 94 | const FFInputFormat ff_subviewer1_demuxer = { | ||
| 95 | .p.name = "subviewer1", | ||
| 96 | .p.long_name = NULL_IF_CONFIG_SMALL("SubViewer v1 subtitle format"), | ||
| 97 | .p.extensions = "sub", | ||
| 98 | .priv_data_size = sizeof(SubViewer1Context), | ||
| 99 | .flags_internal = FF_INFMT_FLAG_INIT_CLEANUP, | ||
| 100 | .read_probe = subviewer1_probe, | ||
| 101 | .read_header = subviewer1_read_header, | ||
| 102 | .read_packet = ff_subtitles_read_packet, | ||
| 103 | .read_seek2 = ff_subtitles_read_seek, | ||
| 104 | .read_close = ff_subtitles_read_close, | ||
| 105 | }; | ||
| 106 |