replaygain.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
/* plugin_common - Routines common to several plugins
* Copyright (C) 2002-2009 Josh Coalson
* Copyright (C) 2011-2016 Xiph.Org Foundation
* Copyright (C) 2003 Philip Jägenstedt
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "replaygain.h"
#include "FLAC/ordinals.h"
#include "FLAC/metadata.h"
#include "share/grabbag.h"
FLAC__bool FLAC_plugin__replaygain_get_from_file(const char *filename,
double *reference, FLAC__bool *reference_set,
double *track_gain, FLAC__bool *track_gain_set,
double *album_gain, FLAC__bool *album_gain_set,
double *track_peak, FLAC__bool *track_peak_set,
double *album_peak, FLAC__bool *album_peak_set)
{
FLAC__Metadata_SimpleIterator *iterator = FLAC__metadata_simple_iterator_new();
FLAC__bool ret = false;
*track_gain_set = *album_gain_set = *track_peak_set = *album_peak_set = false;
if(0 != iterator) {
if(FLAC__metadata_simple_iterator_init(iterator, filename, /*read_only=*/true, /*preserve_file_stats=*/true)) {
FLAC__bool got_vorbis_comments = false;
ret = true;
do {
if(FLAC__metadata_simple_iterator_get_block_type(iterator) == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
FLAC__StreamMetadata *block = FLAC__metadata_simple_iterator_get_block(iterator);
if(0 != block) {
if(grabbag__replaygain_load_from_vorbiscomment(block, /*album_mode=*/false, /*strict=*/true, reference, track_gain, track_peak)) {
*reference_set = *track_gain_set = *track_peak_set = true;
}
if(grabbag__replaygain_load_from_vorbiscomment(block, /*album_mode=*/true, /*strict=*/true, reference, album_gain, album_peak)) {
*reference_set = *album_gain_set = *album_peak_set = true;
}
FLAC__metadata_object_delete(block);
got_vorbis_comments = true;
}
}
} while (!got_vorbis_comments && FLAC__metadata_simple_iterator_next(iterator));
}
FLAC__metadata_simple_iterator_delete(iterator);
}
return ret;
}