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ffmpeg-4.2.2/libavutil/replaygain.h 1.57 KB
aac5773f   hucm   功能基本完成,接口待打磨
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  /*
   * This file is part of FFmpeg.
   *
   * FFmpeg is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * FFmpeg 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
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with FFmpeg; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
   */
  
  #ifndef AVUTIL_REPLAYGAIN_H
  #define AVUTIL_REPLAYGAIN_H
  
  #include <stdint.h>
  
  /**
   * ReplayGain information (see
   * http://wiki.hydrogenaudio.org/index.php?title=ReplayGain_1.0_specification).
   * The size of this struct is a part of the public ABI.
   */
  typedef struct AVReplayGain {
      /**
       * Track replay gain in microbels (divide by 100000 to get the value in dB).
       * Should be set to INT32_MIN when unknown.
       */
      int32_t track_gain;
      /**
       * Peak track amplitude, with 100000 representing full scale (but values
       * may overflow). 0 when unknown.
       */
      uint32_t track_peak;
      /**
       * Same as track_gain, but for the whole album.
       */
      int32_t album_gain;
      /**
       * Same as track_peak, but for the whole album,
       */
      uint32_t album_peak;
  } AVReplayGain;
  
  #endif /* AVUTIL_REPLAYGAIN_H */