structs.h
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上传日期:2015-12-05
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- /*
- ** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
- ** Copyright (C) 2003-2005 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.
- **
- ** Software using this code must display the following message visibly in the
- ** software:
- ** "FAAD2 AAC/HE-AAC/HE-AACv2/DRM decoder (c) Ahead Software, www.nero.com"
- ** in, for example, the about-box or help/startup screen.
- **
- ** Commercial non-GPL licensing of this software is possible.
- ** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
- **
- ** $Id: structs.h,v 1.3 2005/11/01 21:41:43 gabest 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;
- #ifdef PROFILE
- int64_t cycles;
- int64_t fft_cycles;
- #endif
- } mdct_info;
- typedef struct
- {
- const real_t *long_window[2];
- const real_t *short_window[2];
- #ifdef LD_DEC
- const real_t *ld_window[2];
- #endif
- mdct_info *mdct256;
- #ifdef LD_DEC
- mdct_info *mdct1024;
- #endif
- mdct_info *mdct2048;
- #ifdef PROFILE
- int64_t cycles;
- #endif
- } 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;
- #ifdef LTP_DEC
- 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;
- #endif
- #ifdef MAIN_DEC
- typedef struct
- {
- uint8_t limit;
- uint8_t predictor_reset;
- uint8_t predictor_reset_group_number;
- uint8_t prediction_used[MAX_SFB];
- } pred_info;
- #endif
- 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 is_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;
- #ifdef MAIN_DEC
- pred_info pred;
- #endif
- #ifdef LTP_DEC
- ltp_info ltp;
- ltp_info ltp2;
- #endif
- #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 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*/ unsigned char objectTypeIndex;
- /*uint8_t*/ unsigned char samplingFrequencyIndex;
- /*uint32_t*/ unsigned long samplingFrequency;
- /*uint8_t*/ unsigned char channelsConfiguration;
- /* GA Specific Info */
- /*uint8_t*/ unsigned char frameLengthFlag;
- /*uint8_t*/ unsigned char dependsOnCoreCoder;
- /*uint16_t*/ unsigned short coreCoderDelay;
- /*uint8_t*/ unsigned char extensionFlag;
- /*uint8_t*/ unsigned char aacSectionDataResilienceFlag;
- /*uint8_t*/ unsigned char aacScalefactorDataResilienceFlag;
- /*uint8_t*/ unsigned char aacSpectralDataResilienceFlag;
- /*uint8_t*/ unsigned char epConfig;
- /*uint8_t*/ char sbr_present_flag;
- /*uint8_t*/ char forceUpSampling;
- /*uint8_t*/ char downSampledSBR;
- } mp4AudioSpecificConfig;
- typedef struct NeAACDecConfiguration
- {
- /*uint8_t*/ unsigned char defObjectType;
- /*uint32_t*/ unsigned long defSampleRate;
- /*uint8_t*/ unsigned char outputFormat;
- /*uint8_t*/ unsigned char downMatrix;
- /*uint8_t*/ unsigned char useOldADTSFormat;
- /*uint8_t*/ unsigned char dontUpSampleImplicitSBR;
- } NeAACDecConfiguration, *NeAACDecConfigurationPtr;
- typedef struct NeAACDecFrameInfo
- {
- /*uint32_t*/ unsigned long bytesconsumed;
- /*uint32_t*/ unsigned long samples;
- /*uint8_t*/ unsigned char channels;
- /*uint8_t*/ unsigned char error;
- /*uint32_t*/ unsigned long samplerate;
- /* SBR: 0: off, 1: on; normal, 2: on; downsampled */
- /*uint8_t*/ unsigned char sbr;
- /* MPEG-4 ObjectType */
- /*uint8_t*/ unsigned char object_type;
- /* AAC header type; MP4 will be signalled as RAW also */
- /*uint8_t*/ unsigned char header_type;
- /* multichannel configuration */
- /*uint8_t*/ unsigned char num_front_channels;
- /*uint8_t*/ unsigned char num_side_channels;
- /*uint8_t*/ unsigned char num_back_channels;
- /*uint8_t*/ unsigned char num_lfe_channels;
- /*uint8_t*/ unsigned char channel_position[MAX_CHANNELS];
- /* PS: 0: off, 1: on */
- /*uint8_t*/ unsigned char ps;
- } NeAACDecFrameInfo;
- 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 upMatrix;
- uint8_t first_syn_ele;
- uint8_t has_lfe;
- /* number of channels in current frame */
- uint8_t fr_channels;
- /* number of elements in current frame */
- uint8_t fr_ch_ele;
- /* element_output_channels:
- determines the number of channels the element will output
- */
- uint8_t element_output_channels[MAX_SYNTAX_ELEMENTS];
- /* element_alloced:
- determines whether the data needed for the element is allocated or not
- */
- uint8_t element_alloced[MAX_SYNTAX_ELEMENTS];
- /* alloced_channels:
- determines the number of channels where output data is allocated for
- */
- uint8_t alloced_channels;
- /* output data buffer */
- 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];
- real_t *fb_intermed[MAX_CHANNELS];
- #ifdef SBR_DEC
- int8_t sbr_present_flag;
- int8_t forceUpSampling;
- int8_t downSampledSBR;
- /* determines whether SBR data is allocated for the gives element */
- uint8_t sbr_alloced[MAX_SYNTAX_ELEMENTS];
- sbr_info *sbr[MAX_SYNTAX_ELEMENTS];
- #endif
- #if (defined(PS_DEC) || defined(DRM_PS))
- uint8_t ps_used[MAX_SYNTAX_ELEMENTS];
- uint8_t ps_used_global;
- #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
- #ifdef DRM
- uint8_t error_state;
- #endif
- /* Program Config Element */
- uint8_t pce_set;
- program_config pce;
- uint8_t element_id[MAX_CHANNELS];
- uint8_t internal_channel[MAX_CHANNELS];
- /* Configuration data */
- NeAACDecConfiguration config;
- #ifdef PROFILE
- int64_t cycles;
- int64_t spectral_cycles;
- int64_t output_cycles;
- int64_t scalefac_cycles;
- int64_t requant_cycles;
- #endif
- } NeAACDecStruct, *NeAACDecHandle;
- #ifdef __cplusplus
- }
- #endif
- #endif