/*
  * 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
  */
 
 /**
  * @file
  * AAC encoder data
  * @author Rostislav Pehlivanov ( atomnuker gmail com )
  */
 
 #ifndef AVCODEC_AACENCTAB_H
 #define AVCODEC_AACENCTAB_H
 
 #include "aac.h"
 
 /** Total number of usable codebooks **/
 #define CB_TOT 12
 
 /** Total number of codebooks, including special ones **/
 #define CB_TOT_ALL 15
 

 #define AAC_MAX_CHANNELS 16

 extern const uint8_t *ff_aac_swb_size_1024[];
 extern const int      ff_aac_swb_size_1024_len;
 extern const uint8_t *ff_aac_swb_size_128[];
 extern const int      ff_aac_swb_size_128_len;

 /* Supported layouts without using a PCE */
 static const int64_t aac_normal_chan_layouts[7] = {
     AV_CH_LAYOUT_MONO,
     AV_CH_LAYOUT_STEREO,
     AV_CH_LAYOUT_SURROUND,
     AV_CH_LAYOUT_4POINT0,

     AV_CH_LAYOUT_5POINT0_BACK,
     AV_CH_LAYOUT_5POINT1_BACK,

     AV_CH_LAYOUT_7POINT1,
 };
 

 /** default channel configurations */

 static const uint8_t aac_chan_configs[AAC_MAX_CHANNELS][6] = {
     {1, TYPE_SCE},                                         // 1 channel  - single channel element
     {1, TYPE_CPE},                                         // 2 channels - channel pair
     {2, TYPE_SCE, TYPE_CPE},                               // 3 channels - center + stereo
     {3, TYPE_SCE, TYPE_CPE, TYPE_SCE},                     // 4 channels - front center + stereo + back center
     {3, TYPE_SCE, TYPE_CPE, TYPE_CPE},                     // 5 channels - front center + stereo + back stereo
     {4, TYPE_SCE, TYPE_CPE, TYPE_CPE, TYPE_LFE},           // 6 channels - front center + stereo + back stereo + LFE
     {0},                                                   // 7 channels - invalid without PCE
     {5, TYPE_SCE, TYPE_CPE, TYPE_CPE, TYPE_CPE, TYPE_LFE}, // 8 channels - front center + front stereo + side stereo + back stereo + LFE

 };
 
 /**
  * Table to remap channels from libavcodec's default order to AAC order.
  */
 static const uint8_t aac_chan_maps[AAC_MAX_CHANNELS][AAC_MAX_CHANNELS] = {
     { 0 },
     { 0, 1 },
     { 2, 0, 1 },
     { 2, 0, 1, 3 },
     { 2, 0, 1, 3, 4 },
     { 2, 0, 1, 4, 5, 3 },

     { 0 },
     { 2, 0, 1, 6, 7, 4, 5, 3 },

 };
 
 /* duplicated from avpriv_mpeg4audio_sample_rates to avoid shared build
  * failures */
 static const int mpeg4audio_sample_rates[16] = {
     96000, 88200, 64000, 48000, 44100, 32000,
     24000, 22050, 16000, 12000, 11025, 8000, 7350
 };
 
 /** bits needed to code codebook run value for long windows */
 static const uint8_t run_value_bits_long[64] = {
      5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,
      5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5, 10,
     10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
     10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 15
 };
 
 /** bits needed to code codebook run value for short windows */
 static const uint8_t run_value_bits_short[16] = {
     3, 3, 3, 3, 3, 3, 3, 6, 6, 6, 6, 6, 6, 6, 6, 9
 };
 

 /* TNS starting SFBs for long and short windows */
 static const uint8_t tns_min_sfb_short[16] = {
     2, 2, 2, 3, 3, 4, 6, 6, 8, 10, 10, 12, 12, 12, 12, 12
 };
 
 static const uint8_t tns_min_sfb_long[16] = {
     12, 13, 15, 16, 17, 20, 25, 26, 24, 28, 30, 31, 31, 31, 31, 31
 };
 
 static const uint8_t * const tns_min_sfb[2] = {
     tns_min_sfb_long, tns_min_sfb_short
 };
 

 static const uint8_t * const run_value_bits[2] = {
     run_value_bits_long, run_value_bits_short
 };
 
 /** Map to convert values from BandCodingPath index to a codebook index **/
 static const uint8_t aac_cb_out_map[CB_TOT_ALL]  = {0,1,2,3,4,5,6,7,8,9,10,11,13,14,15};
 /** Inverse map to convert from codebooks to BandCodingPath indices **/
 static const uint8_t aac_cb_in_map[CB_TOT_ALL+1] = {0,1,2,3,4,5,6,7,8,9,10,11,0,12,13,14};
 
 static const uint8_t aac_cb_range [12] = {0, 3, 3, 3, 3, 9, 9, 8, 8, 13, 13, 17};
 static const uint8_t aac_cb_maxval[12] = {0, 1, 1, 2, 2, 4, 4, 7, 7, 12, 12, 16};
 

 static const unsigned char aac_maxval_cb[] = {

     0, 1, 3, 5, 5, 7, 7, 7, 9, 9, 9, 9, 9, 11
 };
 

 static const int aacenc_profiles[] = {
     FF_PROFILE_AAC_MAIN,
     FF_PROFILE_AAC_LOW,
     FF_PROFILE_AAC_LTP,
     FF_PROFILE_MPEG2_AAC_LOW,
 };
 

 #endif /* AVCODEC_AACENCTAB_H */