mirror of https://github.com/FFmpeg/FFmpeg.git
Clément Bœsch
12 years ago
parent
580ee973d1
commit
7b43402724
13 changed files with 180 additions and 7 deletions
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/*
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* Copyright (c) 2012 Clément Bœsch |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/**
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* @file |
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* PJS (Phoenix Japanimation Society) subtitles format demuxer |
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* |
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* @see http://subs.com.ru/page.php?al=pjs
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*/ |
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#include "avformat.h" |
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#include "internal.h" |
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#include "subtitles.h" |
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typedef struct { |
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FFDemuxSubtitlesQueue q; |
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} PJSContext; |
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static int pjs_probe(AVProbeData *p) |
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{ |
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char c; |
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int64_t start, end; |
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const unsigned char *ptr = p->buf; |
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if (sscanf(ptr, "%"PRId64",%"PRId64",%c", &start, &end, &c) == 3) { |
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size_t q1pos = strcspn(ptr, "\""); |
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size_t q2pos = q1pos + strcspn(ptr + q1pos + 1, "\"") + 1; |
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if (strcspn(ptr, "\r\n") > q2pos) |
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return AVPROBE_SCORE_MAX; |
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} |
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return 0; |
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} |
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static int64_t read_ts(char **line, int *duration) |
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{ |
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int64_t start, end; |
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if (sscanf(*line, "%"PRId64",%"PRId64, &start, &end) == 2) { |
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*line += strcspn(*line, "\"") + 1; |
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*duration = end - start; |
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return start; |
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} |
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return AV_NOPTS_VALUE; |
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} |
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static int pjs_read_header(AVFormatContext *s) |
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{ |
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PJSContext *pjs = s->priv_data; |
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AVStream *st = avformat_new_stream(s, NULL); |
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int res = 0; |
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if (!st) |
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return AVERROR(ENOMEM); |
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avpriv_set_pts_info(st, 64, 1, 10); |
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st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE; |
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st->codec->codec_id = AV_CODEC_ID_PJS; |
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while (!url_feof(s->pb)) { |
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char line[4096]; |
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char *p = line; |
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const int64_t pos = avio_tell(s->pb); |
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int len = ff_get_line(s->pb, line, sizeof(line)); |
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int64_t pts_start; |
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int duration; |
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if (!len) |
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break; |
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line[strcspn(line, "\r\n")] = 0; |
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pts_start = read_ts(&p, &duration); |
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if (pts_start != AV_NOPTS_VALUE) { |
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AVPacket *sub; |
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p[strcspn(p, "\"")] = 0; |
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sub = ff_subtitles_queue_insert(&pjs->q, p, strlen(p), 0); |
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if (!sub) |
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return AVERROR(ENOMEM); |
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sub->pos = pos; |
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sub->pts = pts_start; |
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sub->duration = duration; |
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} |
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} |
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ff_subtitles_queue_finalize(&pjs->q); |
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return res; |
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} |
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static int pjs_read_packet(AVFormatContext *s, AVPacket *pkt) |
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{ |
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PJSContext *pjs = s->priv_data; |
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return ff_subtitles_queue_read_packet(&pjs->q, pkt); |
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} |
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static int pjs_read_seek(AVFormatContext *s, int stream_index, |
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int64_t min_ts, int64_t ts, int64_t max_ts, int flags) |
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{ |
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PJSContext *pjs = s->priv_data; |
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return ff_subtitles_queue_seek(&pjs->q, s, stream_index, |
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min_ts, ts, max_ts, flags); |
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} |
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static int pjs_read_close(AVFormatContext *s) |
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{ |
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PJSContext *pjs = s->priv_data; |
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ff_subtitles_queue_clean(&pjs->q); |
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return 0; |
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} |
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AVInputFormat ff_pjs_demuxer = { |
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.name = "pjs", |
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.long_name = NULL_IF_CONFIG_SMALL("PJS (Phoenix Japanimation Society) subtitles"), |
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.priv_data_size = sizeof(PJSContext), |
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.read_probe = pjs_probe, |
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.read_header = pjs_read_header, |
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.read_packet = pjs_read_packet, |
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.read_seek2 = pjs_read_seek, |
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.read_close = pjs_read_close, |
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.extensions = "pjs", |
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}; |
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@ -0,0 +1 @@ |
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d044f6ffdee48e48efff072b33baee0a |
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