FFmpeg
Data Fields
IndividualChannelStream Struct Reference

Individual Channel Stream. More...

#include <aac.h>

Data Fields

uint8_t max_sfb
 number of scalefactor bands per group More...
 
enum WindowSequence window_sequence [2]
 
uint8_t use_kb_window [2]
 If set, use Kaiser-Bessel window, otherwise use a sine window. More...
 
int num_window_groups
 
uint8_t group_len [8]
 
LongTermPrediction ltp
 
const uint16_t * swb_offset
 table of offsets to the lowest spectral coefficient of a scalefactor band, sfb, for a particular window More...
 
const uint8_tswb_sizes
 table of scalefactor band sizes for a particular window More...
 
int num_swb
 number of scalefactor window bands More...
 
int num_windows
 
int tns_max_bands
 
int predictor_present
 
int predictor_initialized
 
int predictor_reset_group
 
int predictor_reset_count [31]
 used by encoder to count prediction resets More...
 
uint8_t prediction_used [41]
 
uint8_t window_clipping [8]
 set if a certain window is near clipping More...
 
float clip_avoidance_factor
 set if any window is near clipping to the necessary atennuation factor to avoid it More...
 

Detailed Description

Individual Channel Stream.

Definition at line 174 of file aac.h.

Field Documentation

uint8_t IndividualChannelStream::max_sfb
enum WindowSequence IndividualChannelStream::window_sequence[2]
uint8_t IndividualChannelStream::use_kb_window[2]

If set, use Kaiser-Bessel window, otherwise use a sine window.

Definition at line 177 of file aac.h.

Referenced by aac_encode_frame(), decode_cpe(), decode_ics_info(), imdct_and_windowing(), imdct_and_windowing_960(), imdct_and_windowing_ld(), put_ics_info(), update_ltp(), and windowing_and_mdct_ltp().

int IndividualChannelStream::num_window_groups
uint8_t IndividualChannelStream::group_len[8]
LongTermPrediction IndividualChannelStream::ltp
const uint16_t* IndividualChannelStream::swb_offset
const uint8_t* IndividualChannelStream::swb_sizes
int IndividualChannelStream::num_swb
int IndividualChannelStream::num_windows
int IndividualChannelStream::tns_max_bands
int IndividualChannelStream::predictor_present
int IndividualChannelStream::predictor_initialized

Definition at line 187 of file aac.h.

Referenced by apply_prediction(), and ff_aac_search_for_pred().

int IndividualChannelStream::predictor_reset_group
int IndividualChannelStream::predictor_reset_count[31]

used by encoder to count prediction resets

Definition at line 189 of file aac.h.

Referenced by ff_aac_search_for_pred(), update_counters(), and update_pred_resets().

uint8_t IndividualChannelStream::prediction_used[41]
uint8_t IndividualChannelStream::window_clipping[8]

set if a certain window is near clipping

Definition at line 191 of file aac.h.

Referenced by aac_encode_frame(), and encode_spectral_coeffs().

float IndividualChannelStream::clip_avoidance_factor

set if any window is near clipping to the necessary atennuation factor to avoid it

Definition at line 192 of file aac.h.

Referenced by aac_encode_frame(), and avoid_clipping().


The documentation for this struct was generated from the following file: