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FFmpeg/libavcodec/aactab.h

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  1. /*

  2.  * AAC data declarations

  3.  * Copyright (c) 2005-2006 Oded Shimon ( ods15 ods15 dyndns org )

  4.  * Copyright (c) 2006-2007 Maxim Gavrilov ( maxim.gavrilov gmail com )

  5.  *

  6.  * This file is part of FFmpeg.

  7.  *

  8.  * FFmpeg is free software; you can redistribute it and/or

  9.  * modify it under the terms of the GNU Lesser General Public

  10.  * License as published by the Free Software Foundation; either

  11.  * version 2.1 of the License, or (at your option) any later version.

  12.  *

  13.  * FFmpeg is distributed in the hope that it will be useful,

  14.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  15.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  16.  * Lesser General Public License for more details.

  17.  *

  18.  * You should have received a copy of the GNU Lesser General Public

  19.  * License along with FFmpeg; if not, write to the Free Software

  20.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  21.  */

  22. 

  23. /**

  24.  * @file libavcodec/aactab.h

  25.  * AAC data declarations

  26.  * @author Oded Shimon  ( ods15 ods15 dyndns org )

  27.  * @author Maxim Gavrilov ( maxim.gavrilov gmail com )

  28.  */

  29. 

  30. #ifndef AVCODEC_AACTAB_H

  31. #define AVCODEC_AACTAB_H

  32. 

  33. #include "libavutil/mem.h"

  34. #include "aac.h"

  35. 

  36. #include <stdint.h>

  37. 

  38. /* NOTE:

  39.  * Tables in this file are used by the AAC decoder and will be used by the AAC

  40.  * encoder.

  41.  */

  42. 

  43. /* @name window coefficients

  44.  * @{

  45.  */

  46. DECLARE_ALIGNED(16, extern float,  ff_aac_kbd_long_1024[1024]);

  47. DECLARE_ALIGNED(16, extern float,  ff_aac_kbd_short_128[128]);

  48. // @}

  49. 

  50. /* @name number of scalefactor window bands for long and short transform windows respectively

  51.  * @{

  52.  */

  53. extern const uint8_t ff_aac_num_swb_1024[];

  54. extern const uint8_t ff_aac_num_swb_128 [];

  55. // @}

  56. 

  57. extern const uint8_t ff_aac_pred_sfb_max [];

  58. 

  59. extern const uint32_t ff_aac_scalefactor_code[121];

  60. extern const uint8_t  ff_aac_scalefactor_bits[121];

  61. 

  62. extern const uint16_t * const ff_aac_spectral_codes[11];

  63. extern const uint8_t  * const ff_aac_spectral_bits [11];

  64. extern const uint16_t  ff_aac_spectral_sizes[11];

  65. 

  66. extern const float *ff_aac_codebook_vectors[];

  67. 

  68. #if CONFIG_HARDCODED_TABLES

  69. extern const float ff_aac_pow2sf_tab[428];

  70. #else

  71. extern       float ff_aac_pow2sf_tab[428];

  72. #endif /* CONFIG_HARDCODED_TABLES */

  73. 

  74. #endif /* AVCODEC_AACTAB_H */