2003-08-30 22:30:28 +00:00
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/*
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** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
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** Copyright (C) 2003 M. Bakker, Ahead Software AG, http://www.nero.com
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 2 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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**
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** Any non-GPL usage of this software or parts of this software is strictly
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** forbidden.
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**
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** Commercial non-GPL licensing of this software is possible.
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** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
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**
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2003-10-03 22:23:26 +00:00
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** $Id: sbr_hfadj.h,v 1.2 2003/09/09 18:09:52 menno Exp $
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2003-08-30 22:30:28 +00:00
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**/
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#ifndef __SBR_HFADJ_H__
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#define __SBR_HFADJ_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct {
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real_t Q_mapped[64][5];
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uint8_t S_index_mapped[64][5];
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uint8_t S_mapped[64][5];
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real_t G_lim_boost[5][64];
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real_t Q_M_lim_boost[5][64];
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real_t S_M_boost[5][64];
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} sbr_hfadj_info;
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void hf_adjustment(sbr_info *sbr, qmf_t *Xsbr
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#ifdef SBR_LOW_POWER
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,real_t *deg
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#endif
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,uint8_t ch);
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static void map_envelope_data(sbr_info *sbr, sbr_hfadj_info *adj, uint8_t ch);
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static void map_noise_data(sbr_info *sbr, sbr_hfadj_info *adj, uint8_t ch);
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static void map_sinusoids(sbr_info *sbr, sbr_hfadj_info *adj, uint8_t ch);
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static void estimate_current_envelope(sbr_info *sbr, sbr_hfadj_info *adj, qmf_t *Xsbr,
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uint8_t ch);
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static void additional_component_levels(sbr_info *sbr, sbr_hfadj_info *adj, uint8_t ch);
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static void calculate_gain(sbr_info *sbr, sbr_hfadj_info *adj, uint8_t ch);
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#ifdef SBR_LOW_POWER
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static void calc_gain_groups(sbr_info *sbr, sbr_hfadj_info *adj, real_t *deg, uint8_t ch);
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static void aliasing_reduction(sbr_info *sbr, sbr_hfadj_info *adj, real_t *deg, uint8_t ch);
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#endif
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static void hf_assembly(sbr_info *sbr, sbr_hfadj_info *adj, qmf_t *Xsbr, uint8_t ch);
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#ifdef __cplusplus
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}
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#endif
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#endif
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