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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * Copyright (c) 2012 Clément Bœsch |
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| 3 | * |
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| 4 | * This file is part of FFmpeg. |
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| 5 | * |
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| 6 | * FFmpeg is free software; you can redistribute it and/or |
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| 7 | * modify it under the terms of the GNU Lesser General Public |
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| 8 | * License as published by the Free Software Foundation; either |
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| 9 | * version 2.1 of the License, or (at your option) any later version. |
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| 10 | * |
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| 11 | * FFmpeg is distributed in the hope that it will be useful, |
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | * Lesser General Public License for more details. |
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| 15 | * |
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| 16 | * You should have received a copy of the GNU Lesser General Public |
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| 17 | * License along with FFmpeg; if not, write to the Free Software |
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| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 19 | */ |
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| 20 | |||
| 21 | /** |
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| 22 | * @file |
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| 23 | * VPlayer subtitles format demuxer |
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| 24 | */ |
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| 25 | |||
| 26 | #include "avformat.h" |
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| 27 | #include "internal.h" |
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| 28 | #include "subtitles.h" |
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| 29 | |||
| 30 | typedef struct { |
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| 31 | FFDemuxSubtitlesQueue q; |
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| 32 | } VPlayerContext; |
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| 33 | |||
| 34 | static int vplayer_probe(AVProbeData *p) |
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| 35 | { |
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| 36 | char c; |
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| 37 | const unsigned char *ptr = p->buf; |
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| 38 | |||
| 39 | if (sscanf(ptr, "%*d:%*d:%*d.%*d%c", &c) == 1 && strchr(": =", c)) |
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| 40 | return AVPROBE_SCORE_MAX; |
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| 41 | return 0; |
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| 42 | } |
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| 43 | |||
| 44 | static int64_t read_ts(char **line) |
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| 45 | { |
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| 46 | char c; |
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| 47 | int hh, mm, ss, ms, len; |
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| 48 | |||
| 49 | if (sscanf(*line, "%d:%d:%d.%d%c%n", |
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| 50 | &hh, &mm, &ss, &ms, &c, &len) >= 5) { |
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| 51 | *line += len; |
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| 52 | return (hh*3600LL + mm*60LL + ss) * 100LL + ms; |
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| 53 | } |
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| 54 | return AV_NOPTS_VALUE; |
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| 55 | } |
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| 56 | |||
| 57 | static int vplayer_read_header(AVFormatContext *s) |
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| 58 | { |
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| 59 | VPlayerContext *vplayer = s->priv_data; |
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| 60 | AVStream *st = avformat_new_stream(s, NULL); |
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| 61 | |||
| 62 | if (!st) |
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| 63 | return AVERROR(ENOMEM); |
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| 64 | avpriv_set_pts_info(st, 64, 1, 100); |
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| 65 | st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE; |
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| 66 | st->codec->codec_id = AV_CODEC_ID_VPLAYER; |
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| 67 | |||
| 68 | while (!url_feof(s->pb)) { |
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| 69 | char line[4096]; |
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| 70 | char *p = line; |
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| 71 | const int64_t pos = avio_tell(s->pb); |
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| 72 | int len = ff_get_line(s->pb, line, sizeof(line)); |
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| 73 | int64_t pts_start; |
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| 74 | |||
| 75 | if (!len) |
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| 76 | break; |
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| 77 | |||
| 78 | line[strcspn(line, "\r\n")] = 0; |
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| 79 | |||
| 80 | pts_start = read_ts(&p); |
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| 81 | if (pts_start != AV_NOPTS_VALUE) { |
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| 82 | AVPacket *sub; |
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| 83 | |||
| 84 | sub = ff_subtitles_queue_insert(&vplayer->q, p, strlen(p), 0); |
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| 85 | if (!sub) |
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| 86 | return AVERROR(ENOMEM); |
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| 87 | sub->pos = pos; |
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| 88 | sub->pts = pts_start; |
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| 89 | sub->duration = -1; |
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| 90 | } |
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| 91 | } |
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| 92 | |||
| 93 | ff_subtitles_queue_finalize(&vplayer->q); |
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| 94 | return 0; |
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| 95 | } |
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| 96 | |||
| 97 | static int vplayer_read_packet(AVFormatContext *s, AVPacket *pkt) |
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| 98 | { |
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| 99 | VPlayerContext *vplayer = s->priv_data; |
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| 100 | return ff_subtitles_queue_read_packet(&vplayer->q, pkt); |
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| 101 | } |
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| 102 | |||
| 103 | static int vplayer_read_seek(AVFormatContext *s, int stream_index, |
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| 104 | int64_t min_ts, int64_t ts, int64_t max_ts, int flags) |
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| 105 | { |
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| 106 | VPlayerContext *vplayer = s->priv_data; |
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| 107 | return ff_subtitles_queue_seek(&vplayer->q, s, stream_index, |
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| 108 | min_ts, ts, max_ts, flags); |
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| 109 | } |
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| 110 | |||
| 111 | static int vplayer_read_close(AVFormatContext *s) |
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| 112 | { |
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| 113 | VPlayerContext *vplayer = s->priv_data; |
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| 114 | ff_subtitles_queue_clean(&vplayer->q); |
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| 115 | return 0; |
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| 116 | } |
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| 117 | |||
| 118 | AVInputFormat ff_vplayer_demuxer = { |
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| 119 | .name = "vplayer", |
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| 120 | .long_name = NULL_IF_CONFIG_SMALL("VPlayer subtitles"), |
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| 121 | .priv_data_size = sizeof(VPlayerContext), |
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| 122 | .read_probe = vplayer_probe, |
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| 123 | .read_header = vplayer_read_header, |
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| 124 | .read_packet = vplayer_read_packet, |
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| 125 | .read_seek2 = vplayer_read_seek, |
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| 126 | .read_close = vplayer_read_close, |
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| 127 | .extensions = "txt", |
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| 128 | }; |