mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-28 20:53:54 +02:00
b5da7d4c1a
* qatar/master: avformat: Drop pointless "format" from container long names swscale: bury one more piece of inline asm under HAVE_INLINE_ASM. wv: K&R formatting cosmetics configure: Add missing descriptions to help output h264_ps: declare array of colorspace strings on its own line. fate: amix: specify f32 sample format for comparison tiny_psnr: support 32-bit float samples eamad/eatgq/eatqi: call special EA IDCT directly eamad: remove use of MpegEncContext mpegvideo: remove unnecessary inclusions of faandct.h af_asyncts: avoid overflow in out_size with large delta values af_asyncts: add first_pts option Conflicts: configure libavcodec/eamad.c libavcodec/h264_ps.c libavformat/crcenc.c libavformat/ffmdec.c libavformat/ffmenc.c libavformat/framecrcenc.c libavformat/md5enc.c libavformat/nutdec.c libavformat/rawenc.c libavformat/yuv4mpeg.c tests/tiny_psnr.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
100 lines
3.3 KiB
C
100 lines
3.3 KiB
C
/*
|
|
* SubRip subtitle muxer
|
|
* Copyright (c) 2012 Nicolas George <nicolas.george@normalesup.org>
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#include "avformat.h"
|
|
#include "internal.h"
|
|
#include "libavutil/log.h"
|
|
|
|
/* TODO: add options for:
|
|
- character encoding;
|
|
- LF / CRLF;
|
|
- byte order mark.
|
|
*/
|
|
|
|
typedef struct SRTContext{
|
|
unsigned index;
|
|
} SRTContext;
|
|
|
|
static int srt_write_header(AVFormatContext *avf)
|
|
{
|
|
if (avf->nb_streams != 1 ||
|
|
avf->streams[0]->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) {
|
|
av_log(avf, AV_LOG_ERROR,
|
|
"SRT supports only a single subtitles stream.\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
if (avf->streams[0]->codec->codec_id != CODEC_ID_TEXT &&
|
|
avf->streams[0]->codec->codec_id != CODEC_ID_SRT) {
|
|
av_log(avf, AV_LOG_ERROR,
|
|
"Unsupported subtitles codec: %s\n",
|
|
avcodec_get_name(avf->streams[0]->codec->codec_id));
|
|
return AVERROR(EINVAL);
|
|
}
|
|
avpriv_set_pts_info(avf->streams[0], 64, 1, 1000);
|
|
return 0;
|
|
}
|
|
|
|
static int srt_write_packet(AVFormatContext *avf, AVPacket *pkt)
|
|
{
|
|
SRTContext *srt = avf->priv_data;
|
|
int write_ts = avf->streams[0]->codec->codec_id != CODEC_ID_SRT;
|
|
|
|
srt->index++;
|
|
if (write_ts) {
|
|
char buf[64];
|
|
int64_t s = pkt->pts, e, d = pkt->duration;
|
|
int len;
|
|
|
|
if (d <= 0)
|
|
d = pkt->convergence_duration;
|
|
if (s == AV_NOPTS_VALUE || d <= 0) {
|
|
av_log(avf, AV_LOG_ERROR, "Insufficient timestamps.\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
e = s + d;
|
|
len = snprintf(buf, sizeof(buf),
|
|
"%d\n%02d:%02d:%02d,%03d --> %02d:%02d:%02d,%03d\n",
|
|
srt->index,
|
|
(int)(s / 3600000), (int)(s / 60000) % 60,
|
|
(int)(s / 1000) % 60, (int)(s % 1000),
|
|
(int)(e / 3600000), (int)(e / 60000) % 60,
|
|
(int)(e / 1000) % 60, (int)(e % 1000));
|
|
avio_write(avf->pb, buf, len);
|
|
}
|
|
avio_write(avf->pb, pkt->data, pkt->size);
|
|
if (write_ts)
|
|
avio_write(avf->pb, "\n\n", 2);
|
|
avio_flush(avf->pb);
|
|
return 0;
|
|
}
|
|
|
|
AVOutputFormat ff_srt_muxer = {
|
|
.name = "srt",
|
|
.long_name = NULL_IF_CONFIG_SMALL("SubRip subtitle"),
|
|
.mime_type = "application/x-subrip",
|
|
.extensions = "srt",
|
|
.priv_data_size = sizeof(SRTContext),
|
|
.write_header = srt_write_header,
|
|
.write_packet = srt_write_packet,
|
|
.flags = AVFMT_VARIABLE_FPS,
|
|
.subtitle_codec = CODEC_ID_TEXT,
|
|
};
|