mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
/*
|
|
* APE tag writer
|
|
* Copyright (c) 2012 Paul B Mahol
|
|
*
|
|
* 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 "libavutil/dict.h"
|
|
#include "avio_internal.h"
|
|
#include "avformat.h"
|
|
#include "apetag.h"
|
|
|
|
static int string_is_ascii(const uint8_t *str)
|
|
{
|
|
while (*str && *str >= 0x20 && *str <= 0x7e ) str++;
|
|
return !*str;
|
|
}
|
|
|
|
void ff_ape_write(AVFormatContext *s)
|
|
{
|
|
int64_t tag_bytes;
|
|
AVDictionaryEntry *t = NULL;
|
|
AVIOContext *pb = s->pb;
|
|
int tags = 0, vlen;
|
|
|
|
tag_bytes = avio_tell(s->pb);
|
|
while ((t = av_dict_get(s->metadata, "", t, AV_DICT_IGNORE_SUFFIX))) {
|
|
if (!string_is_ascii(t->key)) {
|
|
av_log(s, AV_LOG_WARNING, "Non ASCII keys are not allowed\n");
|
|
continue;
|
|
}
|
|
|
|
vlen = strlen(t->value);
|
|
avio_wl32(pb, vlen + 1);
|
|
avio_wl32(pb, 0); // flags
|
|
avio_put_str(pb, t->key);
|
|
avio_put_str(pb, t->value);
|
|
tags++;
|
|
}
|
|
tag_bytes = avio_tell(s->pb) - tag_bytes;
|
|
|
|
if (!tags)
|
|
return;
|
|
|
|
avio_write(pb, APE_TAG_PREAMBLE, 8);
|
|
avio_wl32(pb, APE_TAG_VERSION);
|
|
avio_wl32(pb, tag_bytes + APE_TAG_FOOTER_BYTES);
|
|
avio_wl32(pb, tags); // item count
|
|
avio_wl32(pb, 0); // global flags
|
|
ffio_fill(pb, 0, 8); // reserved
|
|
}
|