| 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 | * PJS (Phoenix Japanimation Society) subtitles format demuxer | ||
| 24 | * | ||
| 25 | * @see http://subs.com.ru/page.php?al=pjs | ||
| 26 | */ | ||
| 27 | |||
| 28 | #include "avformat.h" | ||
| 29 | #include "demux.h" | ||
| 30 | #include "internal.h" | ||
| 31 | #include "subtitles.h" | ||
| 32 | |||
| 33 | typedef struct { | ||
| 34 | FFDemuxSubtitlesQueue q; | ||
| 35 | } PJSContext; | ||
| 36 | |||
| 37 | 7186 | static int pjs_probe(const AVProbeData *p) | |
| 38 | { | ||
| 39 | char c; | ||
| 40 | int64_t start, end; | ||
| 41 | 7186 | const unsigned char *ptr = p->buf; | |
| 42 | |||
| 43 |
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7186 | if (sscanf(ptr, "%"SCNd64",%"SCNd64",%c", &start, &end, &c) == 3) { |
| 44 | 1 | size_t q1pos = strcspn(ptr, "\""); | |
| 45 | 1 | size_t q2pos = q1pos + strcspn(ptr + q1pos + 1, "\"") + 1; | |
| 46 |
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1 | if (strcspn(ptr, "\r\n") > q2pos) |
| 47 | 1 | return AVPROBE_SCORE_MAX; | |
| 48 | } | ||
| 49 | 7185 | return 0; | |
| 50 | } | ||
| 51 | |||
| 52 | 3 | static int64_t read_ts(char **line, int *duration) | |
| 53 | { | ||
| 54 | int64_t start, end; | ||
| 55 | |||
| 56 |
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3 | if (sscanf(*line, "%"SCNd64",%"SCNd64, &start, &end) == 2) { |
| 57 | 3 | *line += strcspn(*line, "\""); | |
| 58 | 3 | *line += !!**line; | |
| 59 |
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3 | if (end < start || end - (uint64_t)start > INT_MAX) |
| 60 | ✗ | return AV_NOPTS_VALUE; | |
| 61 | 3 | *duration = end - start; | |
| 62 | 3 | return start; | |
| 63 | } | ||
| 64 | ✗ | return AV_NOPTS_VALUE; | |
| 65 | } | ||
| 66 | |||
| 67 | 1 | static int pjs_read_header(AVFormatContext *s) | |
| 68 | { | ||
| 69 | 1 | PJSContext *pjs = s->priv_data; | |
| 70 | 1 | AVStream *st = avformat_new_stream(s, NULL); | |
| 71 | |||
| 72 |
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1 | if (!st) |
| 73 | ✗ | return AVERROR(ENOMEM); | |
| 74 | 1 | avpriv_set_pts_info(st, 64, 1, 10); | |
| 75 | 1 | st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE; | |
| 76 | 1 | st->codecpar->codec_id = AV_CODEC_ID_PJS; | |
| 77 | |||
| 78 |
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4 | while (!avio_feof(s->pb)) { |
| 79 | char line[4096]; | ||
| 80 | 4 | char *p = line; | |
| 81 | 4 | const int64_t pos = avio_tell(s->pb); | |
| 82 | 4 | int len = ff_get_line(s->pb, line, sizeof(line)); | |
| 83 | int64_t pts_start; | ||
| 84 | int duration; | ||
| 85 | |||
| 86 |
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4 | if (!len) |
| 87 | 1 | break; | |
| 88 | |||
| 89 | 3 | line[strcspn(line, "\r\n")] = 0; | |
| 90 | |||
| 91 | 3 | pts_start = read_ts(&p, &duration); | |
| 92 |
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3 | if (pts_start != AV_NOPTS_VALUE) { |
| 93 | AVPacket *sub; | ||
| 94 | |||
| 95 | 3 | p[strcspn(p, "\"")] = 0; | |
| 96 | 3 | sub = ff_subtitles_queue_insert(&pjs->q, p, strlen(p), 0); | |
| 97 |
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3 | if (!sub) |
| 98 | ✗ | return AVERROR(ENOMEM); | |
| 99 | 3 | sub->pos = pos; | |
| 100 | 3 | sub->pts = pts_start; | |
| 101 | 3 | sub->duration = duration; | |
| 102 | } | ||
| 103 | } | ||
| 104 | |||
| 105 | 1 | ff_subtitles_queue_finalize(s, &pjs->q); | |
| 106 | 1 | return 0; | |
| 107 | } | ||
| 108 | |||
| 109 | const FFInputFormat ff_pjs_demuxer = { | ||
| 110 | .p.name = "pjs", | ||
| 111 | .p.long_name = NULL_IF_CONFIG_SMALL("PJS (Phoenix Japanimation Society) subtitles"), | ||
| 112 | .p.extensions = "pjs", | ||
| 113 | .priv_data_size = sizeof(PJSContext), | ||
| 114 | .flags_internal = FF_INFMT_FLAG_INIT_CLEANUP, | ||
| 115 | .read_probe = pjs_probe, | ||
| 116 | .read_header = pjs_read_header, | ||
| 117 | .read_packet = ff_subtitles_read_packet, | ||
| 118 | .read_seek2 = ff_subtitles_read_seek, | ||
| 119 | .read_close = ff_subtitles_read_close, | ||
| 120 | }; | ||
| 121 |