1 /* plugin_common - Routines common to several plugins
2 * Copyright (C) 2002-2009 Josh Coalson
3 * Copyright (C) 2011-2016 Xiph.Org Foundation
4 * Copyright (C) 2003 Philip J�genstedt
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19 */
20
21 #ifdef HAVE_CONFIG_H
22 # include <config.h>
23 #endif
24
25 #include "replaygain.h"
26 #include "FLAC/ordinals.h"
27 #include "FLAC/metadata.h"
28 #include "share/grabbag.h"
29
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)30 FLAC__bool FLAC_plugin__replaygain_get_from_file(const char *filename,
31 double *reference, FLAC__bool *reference_set,
32 double *track_gain, FLAC__bool *track_gain_set,
33 double *album_gain, FLAC__bool *album_gain_set,
34 double *track_peak, FLAC__bool *track_peak_set,
35 double *album_peak, FLAC__bool *album_peak_set)
36 {
37 FLAC__Metadata_SimpleIterator *iterator = FLAC__metadata_simple_iterator_new();
38 FLAC__bool ret = false;
39
40 *track_gain_set = *album_gain_set = *track_peak_set = *album_peak_set = false;
41
42 if(0 != iterator) {
43 if(FLAC__metadata_simple_iterator_init(iterator, filename, /*read_only=*/true, /*preserve_file_stats=*/true)) {
44 FLAC__bool got_vorbis_comments = false;
45 ret = true;
46 do {
47 if(FLAC__metadata_simple_iterator_get_block_type(iterator) == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
48 FLAC__StreamMetadata *block = FLAC__metadata_simple_iterator_get_block(iterator);
49 if(0 != block) {
50 if(grabbag__replaygain_load_from_vorbiscomment(block, /*album_mode=*/false, /*strict=*/true, reference, track_gain, track_peak)) {
51 *reference_set = *track_gain_set = *track_peak_set = true;
52 }
53 if(grabbag__replaygain_load_from_vorbiscomment(block, /*album_mode=*/true, /*strict=*/true, reference, album_gain, album_peak)) {
54 *reference_set = *album_gain_set = *album_peak_set = true;
55 }
56 FLAC__metadata_object_delete(block);
57 got_vorbis_comments = true;
58 }
59 }
60 } while (!got_vorbis_comments && FLAC__metadata_simple_iterator_next(iterator));
61 }
62 FLAC__metadata_simple_iterator_delete(iterator);
63 }
64 return ret;
65 }
66