ref: 367d20be44225752b3974addd9789a821f88b692
dir: /libfaad/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: syntax.h,v 1.24 2002/12/22 19:58:31 menno Exp $
**/
#ifndef __SYNTAX_H__
#define __SYNTAX_H__
#ifdef __cplusplus
extern "C" {
#endif
#include "decoder.h"
#include "drc.h"
#include "bits.h"
#define MAIN 0
#define LC 1
#define SSR 2
#define LTP 3
#define LD 23
#define ER_LC 17
#define ER_LTP 19
#define DRM_ER_LC 27 /* special object type for DRM */
/* First object type that has ER */
#define ER_OBJECT_START 17
/* Bitstream */
#define LEN_SE_ID 3
#define LEN_TAG 4
#define LEN_BYTE 8
#define EXT_FIL 0
#define EXT_FILL_DATA 1
#define EXT_DATA_ELEMENT 2
#define EXT_DYNAMIC_RANGE 11
#define ANC_DATA 0
/* Syntax elements */
#define ID_SCE 0x0
#define ID_CPE 0x1
#define ID_CCE 0x2
#define ID_LFE 0x3
#define ID_DSE 0x4
#define ID_PCE 0x5
#define ID_FIL 0x6
#define ID_END 0x7
#define ONLY_LONG_SEQUENCE 0x0
#define LONG_START_SEQUENCE 0x1
#define EIGHT_SHORT_SEQUENCE 0x2
#define LONG_STOP_SEQUENCE 0x3
#define ZERO_HCB 0
#define FIRST_PAIR_HCB 5
#define ESC_HCB 11
#define QUAD_LEN 4
#define PAIR_LEN 2
#define BOOKSCL 12
#define NOISE_HCB 13
#define INTENSITY_HCB2 14
#define INTENSITY_HCB 15
int8_t GASpecificConfig(bitfile *ld, uint8_t *channelConfiguration,
uint8_t object_type,
#ifdef ERROR_RESILIENCE
uint8_t *aacSectionDataResilienceFlag,
uint8_t *aacScalefactorDataResilienceFlag,
uint8_t *aacSpectralDataResilienceFlag,
#endif
uint8_t *frameLengthFlag);
uint8_t adts_frame(adts_header *adts, bitfile *ld);
void get_adif_header(adif_header *adif, bitfile *ld);
/* static functions */
static uint8_t single_lfe_channel_element(faacDecHandle hDecoder,
element *sce, bitfile *ld,
int16_t *spec_data);
static uint8_t channel_pair_element(faacDecHandle hDecoder, element *cpe,
bitfile *ld, int16_t *spec_data1,
int16_t *spec_data2);
static uint16_t data_stream_element(bitfile *ld);
static uint8_t program_config_element(program_config *pce, bitfile *ld);
static uint8_t fill_element(bitfile *ld, drc_info *drc);
static uint8_t individual_channel_stream(faacDecHandle hDecoder, element *ele,
bitfile *ld, ic_stream *ics, uint8_t scal_flag,
int16_t *spec_data);
static uint8_t ics_info(faacDecHandle hDecoder, ic_stream *ics, bitfile *ld,
uint8_t common_window);
static void section_data(faacDecHandle hDecoder, ic_stream *ics, bitfile *ld);
static uint8_t scale_factor_data(faacDecHandle hDecoder, ic_stream *ics, bitfile *ld);
static void gain_control_data(bitfile *ld, ic_stream *ics);
static uint8_t spectral_data(faacDecHandle hDecoder, ic_stream *ics, bitfile *ld,
int16_t *spectral_data);
static uint16_t extension_payload(bitfile *ld, drc_info *drc, uint16_t count);
#ifdef ERROR_RESILIENCE
uint8_t reordered_spectral_data(faacDecHandle hDecoder, ic_stream *ics,
bitfile *ld, int16_t *spectral_data);
#endif
static void pulse_data(pulse_info *pul, bitfile *ld);
static void tns_data(ic_stream *ics, tns_info *tns, bitfile *ld);
static void ltp_data(faacDecHandle hDecoder, ic_stream *ics, ltp_info *ltp, bitfile *ld);
static uint8_t adts_fixed_header(adts_header *adts, bitfile *ld);
static void adts_variable_header(adts_header *adts, bitfile *ld);
static void adts_error_check(adts_header *adts, bitfile *ld);
static uint8_t dynamic_range_info(bitfile *ld, drc_info *drc);
static uint8_t excluded_channels(bitfile *ld, drc_info *drc);
#ifdef __cplusplus
}
#endif
#endif