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Diffstat (limited to 'libfaad2/syntax.h')
| -rw-r--r-- | libfaad2/syntax.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/libfaad2/syntax.h b/libfaad2/syntax.h new file mode 100644 index 0000000000..b5361d6962 --- /dev/null +++ b/libfaad2/syntax.h @@ -0,0 +1,144 @@ +/* +** 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 Mpeg4AAClicense@nero.com. +** +** $Id: syntax.h,v 1.32 2003/07/29 08:20:14 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 NOISE_HCB 13 +#define INTENSITY_HCB2 14 +#define INTENSITY_HCB 15 + +static uint32_t sample_rates[] = +{ + 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, + 12000, 11025, 8000 +}; + +int8_t GASpecificConfig(bitfile *ld, mp4AudioSpecificConfig *mp4ASC, + program_config *pce); + +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 uint8_t coupling_channel_element(faacDecHandle hDecoder, bitfile *ld); +static uint16_t data_stream_element(faacDecHandle hDecoder, bitfile *ld); +static uint8_t program_config_element(program_config *pce, bitfile *ld); +static uint8_t fill_element(faacDecHandle hDecoder, bitfile *ld, drc_info *drc +#ifdef SBR_DEC + ,uint8_t sbr_ele +#endif + ); +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 uint8_t 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 uint8_t pulse_data(ic_stream *ics, 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 |