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ffmpeg-4.2.2/libavcodec/aacenctab.c 3.68 KB
aac5773f   hucm   功能基本完成,接口待打磨
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  /*
   * AAC encoder data
   * Copyright (c) 2015 Rostislav Pehlivanov ( atomnuker gmail com )
   *
   * 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
   */
  
  #include "aacenctab.h"
  
  static const uint8_t swb_size_128_96[] = {
      4, 4, 4, 4, 4, 4, 8, 8, 8, 16, 28, 36
  };
  
  static const uint8_t swb_size_128_64[] = {
      4, 4, 4, 4, 4, 4, 8, 8, 8, 16, 28, 36
  };
  
  static const uint8_t swb_size_128_48[] = {
      4, 4, 4, 4, 4, 8, 8, 8, 12, 12, 12, 16, 16, 16
  };
  
  static const uint8_t swb_size_128_24[] = {
      4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 12, 12, 16, 16, 20
  };
  
  static const uint8_t swb_size_128_16[] = {
      4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 12, 12, 16, 20, 20
  };
  
  static const uint8_t swb_size_128_8[] = {
      4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 12, 16, 20, 20
  };
  
  static const uint8_t swb_size_1024_96[] = {
      4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8,
      12, 12, 12, 12, 12, 16, 16, 24, 28, 36, 44,
      64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64
  };
  
  static const uint8_t swb_size_1024_64[] = {
      4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8,
      12, 12, 12, 16, 16, 16, 20, 24, 24, 28, 36,
      40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40
  };
  
  static const uint8_t swb_size_1024_48[] = {
      4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8,
      12, 12, 12, 12, 16, 16, 20, 20, 24, 24, 28, 28,
      32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
      96
  };
  
  static const uint8_t swb_size_1024_32[] = {
      4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8,
      12, 12, 12, 12, 16, 16, 20, 20, 24, 24, 28, 28,
      32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32
  };
  
  static const uint8_t swb_size_1024_24[] = {
      4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
      12, 12, 12, 12, 16, 16, 16, 20, 20, 24, 24, 28, 28,
      32, 36, 36, 40, 44, 48, 52, 52, 64, 64, 64, 64, 64
  };
  
  static const uint8_t swb_size_1024_16[] = {
      8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
      12, 12, 12, 12, 12, 12, 12, 12, 12, 16, 16, 16, 16, 20, 20, 20, 24, 24, 28, 28,
      32, 36, 40, 40, 44, 48, 52, 56, 60, 64, 64, 64
  };
  
  static const uint8_t swb_size_1024_8[] = {
      12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
      16, 16, 16, 16, 16, 16, 16, 20, 20, 20, 20, 24, 24, 24, 28, 28,
      32, 36, 36, 40, 44, 48, 52, 56, 60, 64, 80
  };
  
  const uint8_t *ff_aac_swb_size_128[] = {
      swb_size_128_96, swb_size_128_96, swb_size_128_64,
      swb_size_128_48, swb_size_128_48, swb_size_128_48,
      swb_size_128_24, swb_size_128_24, swb_size_128_16,
      swb_size_128_16, swb_size_128_16, swb_size_128_8,
      swb_size_128_8
  };
  
  const uint8_t *ff_aac_swb_size_1024[] = {
      swb_size_1024_96, swb_size_1024_96, swb_size_1024_64,
      swb_size_1024_48, swb_size_1024_48, swb_size_1024_32,
      swb_size_1024_24, swb_size_1024_24, swb_size_1024_16,
      swb_size_1024_16, swb_size_1024_16, swb_size_1024_8,
      swb_size_1024_8
  };
  
  const int ff_aac_swb_size_128_len  = FF_ARRAY_ELEMS(ff_aac_swb_size_128);
  const int ff_aac_swb_size_1024_len = FF_ARRAY_ELEMS(ff_aac_swb_size_1024);