forked from KolibriOS/kolibrios
129 lines
3.5 KiB
C
129 lines
3.5 KiB
C
/*
|
|
* 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
|
|
* VPlayer subtitles format demuxer
|
|
*/
|
|
|
|
#include "avformat.h"
|
|
#include "internal.h"
|
|
#include "subtitles.h"
|
|
|
|
typedef struct {
|
|
FFDemuxSubtitlesQueue q;
|
|
} VPlayerContext;
|
|
|
|
static int vplayer_probe(AVProbeData *p)
|
|
{
|
|
char c;
|
|
const unsigned char *ptr = p->buf;
|
|
|
|
if (sscanf(ptr, "%*d:%*d:%*d.%*d%c", &c) == 1 && strchr(": =", c))
|
|
return AVPROBE_SCORE_MAX;
|
|
return 0;
|
|
}
|
|
|
|
static int64_t read_ts(char **line)
|
|
{
|
|
char c;
|
|
int hh, mm, ss, ms, len;
|
|
|
|
if (sscanf(*line, "%d:%d:%d.%d%c%n",
|
|
&hh, &mm, &ss, &ms, &c, &len) >= 5) {
|
|
*line += len;
|
|
return (hh*3600LL + mm*60LL + ss) * 100LL + ms;
|
|
}
|
|
return AV_NOPTS_VALUE;
|
|
}
|
|
|
|
static int vplayer_read_header(AVFormatContext *s)
|
|
{
|
|
VPlayerContext *vplayer = s->priv_data;
|
|
AVStream *st = avformat_new_stream(s, NULL);
|
|
|
|
if (!st)
|
|
return AVERROR(ENOMEM);
|
|
avpriv_set_pts_info(st, 64, 1, 100);
|
|
st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
|
|
st->codec->codec_id = AV_CODEC_ID_VPLAYER;
|
|
|
|
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;
|
|
|
|
if (!len)
|
|
break;
|
|
|
|
line[strcspn(line, "\r\n")] = 0;
|
|
|
|
pts_start = read_ts(&p);
|
|
if (pts_start != AV_NOPTS_VALUE) {
|
|
AVPacket *sub;
|
|
|
|
sub = ff_subtitles_queue_insert(&vplayer->q, p, strlen(p), 0);
|
|
if (!sub)
|
|
return AVERROR(ENOMEM);
|
|
sub->pos = pos;
|
|
sub->pts = pts_start;
|
|
sub->duration = -1;
|
|
}
|
|
}
|
|
|
|
ff_subtitles_queue_finalize(&vplayer->q);
|
|
return 0;
|
|
}
|
|
|
|
static int vplayer_read_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
VPlayerContext *vplayer = s->priv_data;
|
|
return ff_subtitles_queue_read_packet(&vplayer->q, pkt);
|
|
}
|
|
|
|
static int vplayer_read_seek(AVFormatContext *s, int stream_index,
|
|
int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
|
|
{
|
|
VPlayerContext *vplayer = s->priv_data;
|
|
return ff_subtitles_queue_seek(&vplayer->q, s, stream_index,
|
|
min_ts, ts, max_ts, flags);
|
|
}
|
|
|
|
static int vplayer_read_close(AVFormatContext *s)
|
|
{
|
|
VPlayerContext *vplayer = s->priv_data;
|
|
ff_subtitles_queue_clean(&vplayer->q);
|
|
return 0;
|
|
}
|
|
|
|
AVInputFormat ff_vplayer_demuxer = {
|
|
.name = "vplayer",
|
|
.long_name = NULL_IF_CONFIG_SMALL("VPlayer subtitles"),
|
|
.priv_data_size = sizeof(VPlayerContext),
|
|
.read_probe = vplayer_probe,
|
|
.read_header = vplayer_read_header,
|
|
.read_packet = vplayer_read_packet,
|
|
.read_seek2 = vplayer_read_seek,
|
|
.read_close = vplayer_read_close,
|
|
.extensions = "txt",
|
|
};
|