0,0 → 1,137 |
/* |
* Copyright (c) 2012 Clément Bœsch |
* |
* This file is part of FFmpeg. |
* |
* FFmpeg is free software; you can redistribute it and/or |
* modify it under the terms of the GNU Lesser General Public |
* License as published by the Free Software Foundation; either |
* version 2.1 of the License, or (at your option) any later version. |
* |
* FFmpeg is distributed in the hope that it will be useful, |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
* Lesser General Public License for more details. |
* |
* You should have received a copy of the GNU Lesser General Public |
* License along with FFmpeg; if not, write to the Free Software |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
*/ |
|
/** |
* @file |
* PJS (Phoenix Japanimation Society) subtitles format demuxer |
* |
* @see http://subs.com.ru/page.php?al=pjs |
*/ |
|
#include "avformat.h" |
#include "internal.h" |
#include "subtitles.h" |
|
typedef struct { |
FFDemuxSubtitlesQueue q; |
} PJSContext; |
|
static int pjs_probe(AVProbeData *p) |
{ |
char c; |
int64_t start, end; |
const unsigned char *ptr = p->buf; |
|
if (sscanf(ptr, "%"SCNd64",%"SCNd64",%c", &start, &end, &c) == 3) { |
size_t q1pos = strcspn(ptr, "\""); |
size_t q2pos = q1pos + strcspn(ptr + q1pos + 1, "\"") + 1; |
if (strcspn(ptr, "\r\n") > q2pos) |
return AVPROBE_SCORE_MAX; |
} |
return 0; |
} |
|
static int64_t read_ts(char **line, int *duration) |
{ |
int64_t start, end; |
|
if (sscanf(*line, "%"SCNd64",%"SCNd64, &start, &end) == 2) { |
*line += strcspn(*line, "\"") + 1; |
*duration = end - start; |
return start; |
} |
return AV_NOPTS_VALUE; |
} |
|
static int pjs_read_header(AVFormatContext *s) |
{ |
PJSContext *pjs = s->priv_data; |
AVStream *st = avformat_new_stream(s, NULL); |
int res = 0; |
|
if (!st) |
return AVERROR(ENOMEM); |
avpriv_set_pts_info(st, 64, 1, 10); |
st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE; |
st->codec->codec_id = AV_CODEC_ID_PJS; |
|
while (!url_feof(s->pb)) { |
char line[4096]; |
char *p = line; |
const int64_t pos = avio_tell(s->pb); |
int len = ff_get_line(s->pb, line, sizeof(line)); |
int64_t pts_start; |
int duration; |
|
if (!len) |
break; |
|
line[strcspn(line, "\r\n")] = 0; |
|
pts_start = read_ts(&p, &duration); |
if (pts_start != AV_NOPTS_VALUE) { |
AVPacket *sub; |
|
p[strcspn(p, "\"")] = 0; |
sub = ff_subtitles_queue_insert(&pjs->q, p, strlen(p), 0); |
if (!sub) |
return AVERROR(ENOMEM); |
sub->pos = pos; |
sub->pts = pts_start; |
sub->duration = duration; |
} |
} |
|
ff_subtitles_queue_finalize(&pjs->q); |
return res; |
} |
|
static int pjs_read_packet(AVFormatContext *s, AVPacket *pkt) |
{ |
PJSContext *pjs = s->priv_data; |
return ff_subtitles_queue_read_packet(&pjs->q, pkt); |
} |
|
static int pjs_read_seek(AVFormatContext *s, int stream_index, |
int64_t min_ts, int64_t ts, int64_t max_ts, int flags) |
{ |
PJSContext *pjs = s->priv_data; |
return ff_subtitles_queue_seek(&pjs->q, s, stream_index, |
min_ts, ts, max_ts, flags); |
} |
|
static int pjs_read_close(AVFormatContext *s) |
{ |
PJSContext *pjs = s->priv_data; |
ff_subtitles_queue_clean(&pjs->q); |
return 0; |
} |
|
AVInputFormat ff_pjs_demuxer = { |
.name = "pjs", |
.long_name = NULL_IF_CONFIG_SMALL("PJS (Phoenix Japanimation Society) subtitles"), |
.priv_data_size = sizeof(PJSContext), |
.read_probe = pjs_probe, |
.read_header = pjs_read_header, |
.read_packet = pjs_read_packet, |
.read_seek2 = pjs_read_seek, |
.read_close = pjs_read_close, |
.extensions = "pjs", |
}; |