FFmpeg: LLSModel Struct Reference

FFmpeg

LLSModel Struct Reference

Linear least squares model. More...

#include <lls.h>

Data Fields

double covariance [(((32+1)+(4) -1)&~((4) -1))][MAX_VARS_ALIGN]

double coeff [32][MAX_VARS]

double variance [MAX_VARS]

int indep_count

void(* update_lls )(struct LLSModel *m, const double *var)

Take the outer-product of var[] with itself, and add to the covariance matrix. More...

double(* evaluate_lls )(struct LLSModel *m, const double *var, int order)

Inner product of var[] and the LPC coefs. More...

Detailed Description

Linear least squares model.

Definition at line 37 of file lls.h.

Field Documentation

◆ covariance

double LLSModel::covariance[((( 32+1)+(4) -1)&~((4) -1))][MAX_VARS_ALIGN]

Definition at line 38 of file lls.h.

Referenced by avpriv_solve_lls(), and update_lls().

◆ coeff

double LLSModel::coeff[32][MAX_VARS]

Definition at line 39 of file lls.h.

Referenced by avpriv_solve_lls(), evaluate_lls(), ff_lpc_calc_coefs(), and main().

◆ variance

double LLSModel::variance[MAX_VARS]

Definition at line 40 of file lls.h.

Referenced by avpriv_solve_lls(), and main().

◆ indep_count

int LLSModel::indep_count

Definition at line 41 of file lls.h.

Referenced by avpriv_init_lls(), avpriv_solve_lls(), ff_init_lls_x86(), and update_lls().

◆ update_lls

void(* LLSModel::update_lls) (struct LLSModel *m, const double *var)

Take the outer-product of var[] with itself, and add to the covariance matrix.

Parameters: m this context

var training samples, starting with the value to be predicted 32-byte aligned, and any padding elements must be initialized (i.e not denormal/nan).

Definition at line 49 of file lls.h.

Referenced by avpriv_init_lls(), ff_init_lls_x86(), ff_lpc_calc_coefs(), and main().

◆ evaluate_lls

double(* LLSModel::evaluate_lls) (struct LLSModel *m, const double *var, int order)

Inner product of var[] and the LPC coefs.

Parameters: m this context

var training samples, excluding the value to be predicted. unaligned.

order lpc order

Definition at line 56 of file lls.h.

Referenced by avpriv_init_lls(), ff_init_lls_x86(), ff_lpc_calc_coefs(), and main().

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

libavutil/lls.h

Generated on Thu Sep 26 2024 23:16:31 for FFmpeg by doxygen 1.8.17