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ffmpeg-4.2.2/libavcodec/mpegaudiodata.h 1.38 KB
aac5773f   hucm   功能基本完成,接口待打磨
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  /*
   * MPEG Audio common tables
   * copyright (c) 2002 Fabrice Bellard
   *
   * 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
   */
  
  /**
   * @file
   * mpeg audio layer common tables.
   */
  
  #ifndef AVCODEC_MPEGAUDIODATA_H
  #define AVCODEC_MPEGAUDIODATA_H
  
  #include <stdint.h>
  
  #include "internal.h"
  
  #define MODE_EXT_MS_STEREO 2
  #define MODE_EXT_I_STEREO  1
  
  extern av_export_avcodec const uint16_t avpriv_mpa_bitrate_tab[2][3][15];
  extern av_export_avcodec const uint16_t avpriv_mpa_freq_tab[3];
  extern const int ff_mpa_sblimit_table[5];
  extern const int ff_mpa_quant_steps[17];
  extern const int ff_mpa_quant_bits[17];
  extern const unsigned char * const ff_mpa_alloc_tables[5];
  
  #endif /* AVCODEC_MPEGAUDIODATA_H */