ref: c0ae72652fc9619e8b1e8f365ab977614179779a
dir: /libfaad/structs.h/
/*
** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
** Copyright (C) 2003 M. Bakker, Ahead Software AG, http://www.nero.com
**
** 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.
**
** Any non-GPL usage of this software or parts of this software is strictly
** forbidden.
**
** Commercial non-GPL licensing of this software is possible.
** For more info contact Ahead Software through [email protected].
**
** $Id: structs.h,v 1.21 2003/11/12 20:47:59 menno Exp $
**/
#ifndef __STRUCTS_H__
#define __STRUCTS_H__
#ifdef __cplusplus
extern "C" {
#endif
#include "cfft.h"
#ifdef SBR_DEC
#include "sbr_dec.h"
#endif
#define MAX_CHANNELS 64
#define MAX_SYNTAX_ELEMENTS 48
#define MAX_WINDOW_GROUPS 8
#define MAX_SFB 51
#define MAX_LTP_SFB 40
#define MAX_LTP_SFB_S 8
/* used to save the prediction state */
typedef struct {
int16_t r[2];
int16_t COR[2];
int16_t VAR[2];
} pred_state;
typedef struct {
uint16_t N;
cfft_info *cfft;
complex_t *sincos;
} mdct_info;
typedef struct
{
real_t *long_window[2];
real_t *short_window[2];
#ifdef LD_DEC
real_t *ld_window[2];
#endif
mdct_info *mdct256;
#ifdef LD_DEC
mdct_info *mdct1024;
#endif
mdct_info *mdct2048;
} fb_info;
typedef struct
{
uint8_t present;
uint8_t num_bands;
uint8_t pce_instance_tag;
uint8_t excluded_chns_present;
uint8_t band_top[17];
uint8_t prog_ref_level;
uint8_t dyn_rng_sgn[17];
uint8_t dyn_rng_ctl[17];
uint8_t exclude_mask[MAX_CHANNELS];
uint8_t additional_excluded_chns[MAX_CHANNELS];
real_t ctrl1;
real_t ctrl2;
} drc_info;
typedef struct
{
uint8_t element_instance_tag;
uint8_t object_type;
uint8_t sf_index;
uint8_t num_front_channel_elements;
uint8_t num_side_channel_elements;
uint8_t num_back_channel_elements;
uint8_t num_lfe_channel_elements;
uint8_t num_assoc_data_elements;
uint8_t num_valid_cc_elements;
uint8_t mono_mixdown_present;
uint8_t mono_mixdown_element_number;
uint8_t stereo_mixdown_present;
uint8_t stereo_mixdown_element_number;
uint8_t matrix_mixdown_idx_present;
uint8_t pseudo_surround_enable;
uint8_t matrix_mixdown_idx;
uint8_t front_element_is_cpe[16];
uint8_t front_element_tag_select[16];
uint8_t side_element_is_cpe[16];
uint8_t side_element_tag_select[16];
uint8_t back_element_is_cpe[16];
uint8_t back_element_tag_select[16];
uint8_t lfe_element_tag_select[16];
uint8_t assoc_data_element_tag_select[16];
uint8_t cc_element_is_ind_sw[16];
uint8_t valid_cc_element_tag_select[16];
uint8_t channels;
uint8_t comment_field_bytes;
uint8_t comment_field_data[257];
/* extra added values */
uint8_t num_front_channels;
uint8_t num_side_channels;
uint8_t num_back_channels;
uint8_t num_lfe_channels;
uint8_t sce_channel[16];
uint8_t cpe_channel[16];
} program_config;
typedef struct
{
uint16_t syncword;
uint8_t id;
uint8_t layer;
uint8_t protection_absent;
uint8_t profile;
uint8_t sf_index;
uint8_t private_bit;
uint8_t channel_configuration;
uint8_t original;
uint8_t home;
uint8_t emphasis;
uint8_t copyright_identification_bit;
uint8_t copyright_identification_start;
uint16_t aac_frame_length;
uint16_t adts_buffer_fullness;
uint8_t no_raw_data_blocks_in_frame;
uint16_t crc_check;
/* control param */
uint8_t old_format;
} adts_header;
typedef struct
{
uint8_t copyright_id_present;
int8_t copyright_id[10];
uint8_t original_copy;
uint8_t home;
uint8_t bitstream_type;
uint32_t bitrate;
uint8_t num_program_config_elements;
uint32_t adif_buffer_fullness;
/* maximum of 16 PCEs */
program_config pce[16];
} adif_header;
typedef struct
{
uint8_t last_band;
uint8_t data_present;
uint16_t lag;
uint8_t lag_update;
uint8_t coef;
uint8_t long_used[MAX_SFB];
uint8_t short_used[8];
uint8_t short_lag_present[8];
uint8_t short_lag[8];
} ltp_info;
typedef struct
{
uint8_t limit;
uint8_t predictor_reset;
uint8_t predictor_reset_group_number;
uint8_t prediction_used[MAX_SFB];
} pred_info;
typedef struct
{
uint8_t number_pulse;
uint8_t pulse_start_sfb;
uint8_t pulse_offset[4];
uint8_t pulse_amp[4];
} pulse_info;
typedef struct
{
uint8_t n_filt[8];
uint8_t coef_res[8];
uint8_t length[8][4];
uint8_t order[8][4];
uint8_t direction[8][4];
uint8_t coef_compress[8][4];
uint8_t coef[8][4][32];
} tns_info;
#ifdef SSR_DEC
typedef struct
{
uint8_t max_band;
uint8_t adjust_num[4][8];
uint8_t alevcode[4][8][8];
uint8_t aloccode[4][8][8];
} ssr_info;
#endif
typedef struct
{
uint8_t max_sfb;
uint8_t num_swb;
uint8_t num_window_groups;
uint8_t num_windows;
uint8_t window_sequence;
uint8_t window_group_length[8];
uint8_t window_shape;
uint8_t scale_factor_grouping;
uint16_t sect_sfb_offset[8][15*8];
uint16_t swb_offset[52];
uint8_t sect_cb[8][15*8];
uint16_t sect_start[8][15*8];
uint16_t sect_end[8][15*8];
uint8_t sfb_cb[8][8*15];
uint8_t num_sec[8]; /* number of sections in a group */
uint8_t global_gain;
int16_t scale_factors[8][51]; /* [0..255] */
uint8_t ms_mask_present;
uint8_t ms_used[MAX_WINDOW_GROUPS][MAX_SFB];
uint8_t noise_used;
uint8_t pulse_data_present;
uint8_t tns_data_present;
uint8_t gain_control_data_present;
uint8_t predictor_data_present;
pulse_info pul;
tns_info tns;
pred_info pred;
ltp_info ltp;
ltp_info ltp2;
#ifdef SSR_DEC
ssr_info ssr;
#endif
#ifdef ERROR_RESILIENCE
/* ER HCR data */
uint16_t length_of_reordered_spectral_data;
uint8_t length_of_longest_codeword;
/* ER RLVC data */
uint8_t sf_concealment;
uint8_t rev_global_gain;
uint16_t length_of_rvlc_sf;
uint16_t dpcm_noise_nrg;
uint8_t sf_escapes_present;
uint8_t length_of_rvlc_escapes;
uint16_t dpcm_noise_last_position;
#endif
} ic_stream; /* individual channel stream */
typedef struct
{
uint8_t ele_id;
uint8_t channel;
int16_t paired_channel;
uint8_t element_instance_tag;
uint8_t common_window;
ic_stream ics1;
ic_stream ics2;
} element; /* syntax element (SCE, CPE, LFE) */
typedef struct mp4AudioSpecificConfig
{
/* Audio Specific Info */
uint8_t objectTypeIndex;
uint8_t samplingFrequencyIndex;
uint32_t samplingFrequency;
uint8_t channelsConfiguration;
/* GA Specific Info */
uint8_t frameLengthFlag;
uint8_t dependsOnCoreCoder;
uint16_t coreCoderDelay;
uint8_t extensionFlag;
uint8_t aacSectionDataResilienceFlag;
uint8_t aacScalefactorDataResilienceFlag;
uint8_t aacSpectralDataResilienceFlag;
uint8_t epConfig;
int8_t sbr_present_flag;
int8_t forceUpSampling;
} mp4AudioSpecificConfig;
typedef struct faacDecConfiguration
{
uint8_t defObjectType;
uint32_t defSampleRate;
uint8_t outputFormat;
uint8_t downMatrix;
uint8_t useOldADTSFormat;
} faacDecConfiguration, *faacDecConfigurationPtr;
typedef struct faacDecFrameInfo
{
uint32_t bytesconsumed;
uint32_t samples;
uint8_t channels;
uint8_t error;
uint32_t samplerate;
/* SBR: 0: off, 1: on; normal, 2: on; downsampled */
uint8_t sbr;
/* MPEG-4 ObjectType */
uint8_t object_type;
/* AAC header type; MP4 will be signalled as RAW also */
uint8_t header_type;
/* multichannel configuration */
uint8_t num_front_channels;
uint8_t num_side_channels;
uint8_t num_back_channels;
uint8_t num_lfe_channels;
uint8_t channel_position[MAX_CHANNELS];
} faacDecFrameInfo;
typedef struct
{
uint8_t adts_header_present;
uint8_t adif_header_present;
uint8_t sf_index;
uint8_t object_type;
uint8_t channelConfiguration;
#ifdef ERROR_RESILIENCE
uint8_t aacSectionDataResilienceFlag;
uint8_t aacScalefactorDataResilienceFlag;
uint8_t aacSpectralDataResilienceFlag;
#endif
uint16_t frameLength;
uint8_t postSeekResetFlag;
uint32_t frame;
uint8_t downMatrix;
uint8_t first_syn_ele;
uint8_t has_lfe;
uint8_t fr_channels;
uint8_t fr_ch_ele;
void *sample_buffer;
uint8_t window_shape_prev[MAX_CHANNELS];
#ifdef LTP_DEC
uint16_t ltp_lag[MAX_CHANNELS];
#endif
fb_info *fb;
drc_info *drc;
real_t *time_out[MAX_CHANNELS];
#ifdef SBR_DEC
int8_t sbr_present_flag;
int8_t forceUpSampling;
real_t *time_out2[MAX_CHANNELS];
uint8_t sbr_used[32];
sbr_info *sbr[32];
#ifdef DRM
int8_t lcstereo_flag;
#endif
#endif
#ifdef SSR_DEC
real_t *ssr_overlap[MAX_CHANNELS];
real_t *prev_fmd[MAX_CHANNELS];
real_t ipqf_buffer[MAX_CHANNELS][4][96/4];
#endif
#ifdef MAIN_DEC
pred_state *pred_stat[MAX_CHANNELS];
#endif
#ifdef LTP_DEC
int16_t *lt_pred_stat[MAX_CHANNELS];
#endif
#ifndef FIXED_POINT
#if POW_TABLE_SIZE
real_t *pow2_table;
#endif
#endif
/* Program Config Element */
uint8_t pce_set;
program_config pce;
uint8_t element_id[MAX_CHANNELS];
uint8_t channel_element[MAX_CHANNELS];
uint8_t internal_channel[MAX_CHANNELS];
/* Configuration data */
faacDecConfiguration config;
} faacDecStruct, *faacDecHandle;
#ifdef __cplusplus
}
#endif
#endif