FFPsyContext Struct Reference

context used by psychoacoustic model More...

#include <psymodel.h>

Data Fields

AVCodecContext * avctx

encoder context

const struct FFPsyModel * model

encoder-specific model functions

FFPsyChannel * ch

single channel information

FFPsyChannelGroup * group

channel group information

int num_groups

number of channel groups

int cutoff

lowpass frequency cutoff for analysis

uint8_t ** bands

scalefactor band sizes for possible frame sizes

int * num_bands

number of scalefactor bands for possible frame sizes

int num_lens

number of scalefactor band sets

struct {

int size

size of the bitresevoir in bits More...

int bits

number of bits used in the bitresevoir More...

int alloc

number of bits allocated by the psy, or -1 if no allocation was done More...

} bitres

void * model_priv_data

psychoacoustic model implementation private data

float pair_joint [16]

encoder-fed per-CPE joint-tool candidacy fraction EMA (bands M/S would adopt or I/S renders; ~0 = joint tools dead); 0 = unseeded

uint8_t pair_decoupled [16]

Schmitt state over pair_joint: 1 = joint tools dead on this pair, joint windowing/M-S coupling suspended.

Detailed Description

context used by psychoacoustic model

Definition at line 89 of file psymodel.h.

Field Documentation

◆ avctx

AVCodecContext* FFPsyContext::avctx

encoder context

Definition at line 90 of file psymodel.h.

◆ model

const struct FFPsyModel* FFPsyContext::model

encoder-specific model functions

Definition at line 91 of file psymodel.h.

◆ ch

FFPsyChannel* FFPsyContext::ch

single channel information

Definition at line 93 of file psymodel.h.

◆ group

FFPsyChannelGroup* FFPsyContext::group

channel group information

Definition at line 94 of file psymodel.h.

◆ num_groups

int FFPsyContext::num_groups

number of channel groups

Definition at line 95 of file psymodel.h.

◆ cutoff

int FFPsyContext::cutoff

lowpass frequency cutoff for analysis

Definition at line 96 of file psymodel.h.

◆ bands

uint8_t** FFPsyContext::bands

scalefactor band sizes for possible frame sizes

Definition at line 98 of file psymodel.h.

◆ num_bands

int* FFPsyContext::num_bands

number of scalefactor bands for possible frame sizes

Definition at line 99 of file psymodel.h.

◆ num_lens

int FFPsyContext::num_lens

number of scalefactor band sets

Definition at line 100 of file psymodel.h.

◆ size

int FFPsyContext::size

size of the bitresevoir in bits

Definition at line 103 of file psymodel.h.

◆ bits

int FFPsyContext::bits

number of bits used in the bitresevoir

Definition at line 104 of file psymodel.h.

◆ alloc

int FFPsyContext::alloc

number of bits allocated by the psy, or -1 if no allocation was done

Definition at line 105 of file psymodel.h.

◆ [struct]

struct { ... } FFPsyContext::bitres

◆ model_priv_data

void* FFPsyContext::model_priv_data

psychoacoustic model implementation private data

Definition at line 108 of file psymodel.h.

Referenced by psy_3gpp_end().

◆ pair_joint

float FFPsyContext::pair_joint[16]

encoder-fed per-CPE joint-tool candidacy fraction EMA (bands M/S would adopt or I/S renders; ~0 = joint tools dead); 0 = unseeded

Definition at line 109 of file psymodel.h.

◆ pair_decoupled

uint8_t FFPsyContext::pair_decoupled[16]

Schmitt state over pair_joint: 1 = joint tools dead on this pair, joint windowing/M-S coupling suspended.

Definition at line 110 of file psymodel.h.

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

libavcodec/psymodel.h

Generated on Sun Sep 6 2026 19:21:26 for FFmpeg by doxygen 1.13.2