ffmpeg/libavutil/replaygain.h

   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      */
  35     int32_t track_gain;
  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      */
  44     int32_t album_gain;
  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 */