/*
  * AAC Spectral Band Replication function declarations
  * Copyright (c) 2008-2009 Robert Swain ( rob opendot cl )
  * Copyright (c) 2010      Alex Converse <alex.converse@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 Spectral Band Replication function declarations
  * @author Robert Swain ( rob opendot cl )
  */
 
 #ifndef AVCODEC_AACSBR_H
 #define AVCODEC_AACSBR_H
 
 #include "get_bits.h"
 #include "aac.h"
 #include "sbr.h"
 

 #define ENVELOPE_ADJUSTMENT_OFFSET 2

 #define NOISE_FLOOR_OFFSET 6

 
 /**
  * SBR VLC tables
  */
 enum {
     T_HUFFMAN_ENV_1_5DB,
     F_HUFFMAN_ENV_1_5DB,
     T_HUFFMAN_ENV_BAL_1_5DB,
     F_HUFFMAN_ENV_BAL_1_5DB,
     T_HUFFMAN_ENV_3_0DB,
     F_HUFFMAN_ENV_3_0DB,
     T_HUFFMAN_ENV_BAL_3_0DB,
     F_HUFFMAN_ENV_BAL_3_0DB,
     T_HUFFMAN_NOISE_3_0DB,
     T_HUFFMAN_NOISE_BAL_3_0DB,
 };
 
 /**
  * bs_frame_class - frame class of current SBR frame (14496-3 sp04 p98)
  */
 enum {
     FIXFIX,
     FIXVAR,
     VARFIX,
     VARVAR,
 };
 
 enum {
     EXTENSION_ID_PS = 2,
 };
 
 static const int8_t vlc_sbr_lav[10] =
     { 60, 60, 24, 24, 31, 31, 12, 12, 31, 12 };
 
 #define SBR_INIT_VLC_STATIC(num, size) \
     INIT_VLC_STATIC(&vlc_sbr[num], 9, sbr_tmp[num].table_size / sbr_tmp[num].elem_size,     \
                     sbr_tmp[num].sbr_bits ,                      1,                      1, \
                     sbr_tmp[num].sbr_codes, sbr_tmp[num].elem_size, sbr_tmp[num].elem_size, \
                     size)
 
 #define SBR_VLC_ROW(name) \
     { name ## _codes, name ## _bits, sizeof(name ## _codes), sizeof(name ## _codes[0]) }
 

 /** Initialize SBR. */

 void AAC_RENAME(ff_aac_sbr_init)(void);

 /** Initialize one SBR context. */

 void AAC_RENAME(ff_aac_sbr_ctx_init)(AACContext *ac, SpectralBandReplication *sbr, int id_aac);

 /** Close one SBR context. */

 void AAC_RENAME(ff_aac_sbr_ctx_close)(SpectralBandReplication *sbr);

 /** Decode one SBR element. */

 int AAC_RENAME(ff_decode_sbr_extension)(AACContext *ac, SpectralBandReplication *sbr,

                             GetBitContext *gb, int crc, int cnt, int id_aac);

 /** Apply one SBR element to one AAC element. */

 void AAC_RENAME(ff_sbr_apply)(AACContext *ac, SpectralBandReplication *sbr, int id_aac,
                   INTFLOAT* L, INTFLOAT *R);

 void ff_aacsbr_func_ptr_init_mips(AACSBRContext *c);
 

 #endif /* AVCODEC_AACSBR_H */