mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-13 10:44:59 +00:00
4bf90e095b
To make it consistent with other muxers. The user can still control the generic flushing behaviour after write_header (same way as after packets) using the -flush_packets option, the default typically means to flush unless a non-streamed file output is used. Therefore this change should have no adverse effect on streaming, even if it is assumed that the first packet has a clean buffer, so small seekbacks within the output buffer work even when the IO context is not seekable. Signed-off-by: Marton Balint <cus@passwd.hu>
99 lines
2.8 KiB
C
99 lines
2.8 KiB
C
/*
|
|
* Metadata muxer
|
|
* Copyright (c) 2010 Anton Khirnov
|
|
*
|
|
* 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 <inttypes.h>
|
|
|
|
#include "avformat.h"
|
|
#include "ffmeta.h"
|
|
#include "libavutil/dict.h"
|
|
|
|
|
|
static void write_escape_str(AVIOContext *s, const uint8_t *str)
|
|
{
|
|
const uint8_t *p = str;
|
|
|
|
while (*p) {
|
|
if (*p == '#' || *p == ';' || *p == '=' || *p == '\\' || *p == '\n')
|
|
avio_w8(s, '\\');
|
|
avio_w8(s, *p);
|
|
p++;
|
|
}
|
|
}
|
|
|
|
static void write_tags(AVIOContext *s, AVDictionary *m)
|
|
{
|
|
AVDictionaryEntry *t = NULL;
|
|
while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX))) {
|
|
write_escape_str(s, t->key);
|
|
avio_w8(s, '=');
|
|
write_escape_str(s, t->value);
|
|
avio_w8(s, '\n');
|
|
}
|
|
}
|
|
|
|
static int write_header(AVFormatContext *s)
|
|
{
|
|
avio_write(s->pb, ID_STRING, sizeof(ID_STRING) - 1);
|
|
avio_w8(s->pb, '1'); // version
|
|
avio_w8(s->pb, '\n');
|
|
return 0;
|
|
}
|
|
|
|
static int write_trailer(AVFormatContext *s)
|
|
{
|
|
int i;
|
|
|
|
write_tags(s->pb, s->metadata);
|
|
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
avio_write(s->pb, ID_STREAM, sizeof(ID_STREAM) - 1);
|
|
avio_w8(s->pb, '\n');
|
|
write_tags(s->pb, s->streams[i]->metadata);
|
|
}
|
|
|
|
for (i = 0; i < s->nb_chapters; i++) {
|
|
AVChapter *ch = s->chapters[i];
|
|
avio_write(s->pb, ID_CHAPTER, sizeof(ID_CHAPTER) - 1);
|
|
avio_w8(s->pb, '\n');
|
|
avio_printf(s->pb, "TIMEBASE=%d/%d\n", ch->time_base.num, ch->time_base.den);
|
|
avio_printf(s->pb, "START=%"PRId64"\n", ch->start);
|
|
avio_printf(s->pb, "END=%"PRId64"\n", ch->end);
|
|
write_tags(s->pb, ch->metadata);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int write_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
AVOutputFormat ff_ffmetadata_muxer = {
|
|
.name = "ffmetadata",
|
|
.long_name = NULL_IF_CONFIG_SMALL("FFmpeg metadata in text"),
|
|
.extensions = "ffmeta",
|
|
.write_header = write_header,
|
|
.write_packet = write_packet,
|
|
.write_trailer = write_trailer,
|
|
.flags = AVFMT_NOTIMESTAMPS | AVFMT_NOSTREAMS,
|
|
};
|