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replaygain.h
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1 /*
2  *
3  * This file is part of FFmpeg.
4  *
5  * FFmpeg is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2.1 of the License, or (at your option) any later version.
9  *
10  * FFmpeg is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with FFmpeg; if not, write to the Free Software
17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18  */
19 
20 #ifndef AVUTIL_REPLAYGAIN_H
21 #define AVUTIL_REPLAYGAIN_H
22 
23 #include <stdint.h>
24 
25 /**
26  * ReplayGain information (see
27  * http://wiki.hydrogenaudio.org/index.php?title=ReplayGain_1.0_specification).
28  * The size of this struct is a part of the public ABI.
29  */
30 typedef struct AVReplayGain {
31  /**
32  * Track replay gain in microbels (divide by 100000 to get the value in dB).
33  * Should be set to INT32_MIN when unknown.
34  */
36  /**
37  * Peak track amplitude, with 100000 representing full scale (but values
38  * may overflow). 0 when unknown.
39  */
40  uint32_t track_peak;
41  /**
42  * Same as track_gain, but for the whole album.
43  */
45  /**
46  * Same as track_peak, but for the whole album,
47  */
48  uint32_t album_peak;
49 } AVReplayGain;
50 
51 #endif /* AVUTIL_REPLAYGAIN_H */