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add new replaygain module

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This commit is contained in:
Josh Coalson
2005-09-02 04:52:32 +00:00
parent 99ea64077c
commit f8ffa1a705
5 changed files with 99 additions and 0 deletions
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57
src/plugin_common/replaygain.c Normal file
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/* plugin_common - Routines common to several plugins
* Copyright (C) 2002,2003 Josh Coalson
* Copyright (C) 2003 Philip J<>genstedt
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "replaygain.h"
#include "FLAC/ordinals.h"
#include "FLAC/metadata.h"
#include "share/grabbag.h"
void FLAC_plugin__replaygain_get_from_file(const char *filename,
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)
{
*track_gain_set = *album_gain_set = *track_peak_set = *album_peak_set = false;
/* Largely stolen from vorbiscomment.c and the other replaygain.c */
FLAC__Metadata_SimpleIterator *iterator = FLAC__metadata_simple_iterator_new();
if(0 != iterator) {
if(FLAC__metadata_simple_iterator_init(iterator, filename, /*read_only=*/true, /*preserve_file_stats=*/true)) {
FLAC__bool got_vorbis_comments = false;
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, track_gain, track_peak)) {
*track_gain_set = *track_peak_set = true;
}
if(grabbag__replaygain_load_from_vorbiscomment(block, /*album_mode=*/true, /*strict=*/true, album_gain, album_peak)) {
*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;
}