ref: 44c7b98d129afe60aac5bf8a688902a67623c27f
dir: /libfaad/sbr_syntax.h/
/*
** FAAD - Freeware Advanced Audio Decoder
** Copyright (C) 2002 M. Bakker
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program 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 General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
**
** $Id: sbr_syntax.h,v 1.3 2002/04/23 21:08:26 menno Exp $
**/
#ifdef SBR
#ifndef __SBR_SYNTAX_H__
#define __SBR_SYNTAX_H__
#ifdef __cplusplus
extern "C" {
#endif
#include "bits.h"
#define SBR_STD 12
#define SBR_HDR 13
#define FIXFIX 0
#define FIXVAR 1
#define VARFIX 2
#define VARVAR 3
#define NO_TIME_SLOTS 16
typedef struct
{
/* really used */
uint8_t abs_bord_lead[2];
uint8_t abs_bord_trail[2];
/* to get it compiling */
/* we'll see during the coding of all the tools, whether
these are all used or not.
*/
uint8_t bs_crc_flag;
uint8_t bs_sbr_crc_bits;
uint8_t bs_protocol_version;
uint8_t bs_amp_res;
uint8_t bs_start_freq;
uint8_t bs_stop_freq;
uint8_t bs_xover_band;
uint8_t bs_freq_scale;
uint8_t bs_alter_scale;
uint8_t bs_noise_bands;
uint8_t bs_limiter_bands;
uint8_t bs_limiter_gains;
uint8_t bs_interpol_freq;
uint8_t bs_smoothing_mode;
uint8_t bs_samplerate_mode;
uint8_t bs_add_harmonic_flag[2];
uint8_t bs_extended_data[2];
uint8_t bs_extension_id;
uint8_t bs_coupling;
uint8_t bs_frame_class;
uint8_t bs_num_env[2];
uint8_t bs_freq_res[2][6];
uint8_t bs_rel_bord[2][9];
uint8_t bs_rel_bord_0[2][9];
uint8_t bs_rel_bord_1[2][9];
uint8_t bs_pointer[2];
uint8_t bs_abs_bord_0[2];
uint8_t bs_abs_bord_1[2];
uint8_t bs_num_rel_0[2];
uint8_t bs_num_rel_1[2];
uint8_t bs_num_noise[2];
uint8_t bs_df_env[2][9];
uint8_t bs_df_noise[2][3];
uint8_t num_noise_bands[2];
uint8_t bs_invf_mode_vec[2][/*??*/10];
uint8_t num_high_res[2];
uint8_t bs_add_harmonic[2][/*??*/10];
uint16_t bs_data_env[2][/*??*/10][/*??*/10];
uint16_t bs_data_noise[2][/*??*/10][/*??*/10];
uint8_t num_env_bands[2];
} sbr_info;
uint8_t sbr_bitstream(bitfile *ld, sbr_info *sbr, uint8_t id_aac,
uint8_t bs_extension_type);
static void sbr_header(bitfile *ld, sbr_info *sbr, uint8_t id_aac);
static void sbr_data(bitfile *ld, sbr_info *sbr, uint8_t id_aac);
static void sbr_single_channel_element(bitfile *ld, sbr_info *sbr);
static void sbr_channel_pair_element(bitfile *ld, sbr_info *sbr);
static void sbr_grid(bitfile *ld, sbr_info *sbr, uint8_t ch);
static void sbr_dtdf(bitfile *ld, sbr_info *sbr, uint8_t ch);
static void invf_mode(bitfile *ld, sbr_info *sbr, uint8_t ch);
static void sbr_envelope(bitfile *ld, sbr_info *sbr, uint8_t ch);
static void sbr_noise(bitfile *ld, sbr_info *sbr, uint8_t ch);
static void sinusoidal_coding(bitfile *ld, sbr_info *sbr, uint8_t ch);
#ifdef __cplusplus
}
#endif
#endif /* __SBR_SYNTAX_H__ */
#endif /* SBR */