LPCContext Struct Reference

#include <lpc.h>


Data Fields

int blocksize
int max_order
enum FFLPCType lpc_type
double * windowed_buffer
double * windowed_samples
void(* lpc_apply_welch_window )(const int32_t *data, int len, double *w_data)
 Apply a Welch window to an array of input samples.
void(* lpc_compute_autocorr )(const double *data, int len, int lag, double *autoc)
 Perform autocorrelation on input samples with delay of 0 to lag.


Detailed Description

Definition at line 50 of file lpc.h.


Field Documentation

Definition at line 51 of file lpc.h.

Referenced by ff_lpc_calc_coefs(), and ff_lpc_init().

void(* LPCContext::lpc_apply_welch_window)(const int32_t *data, int len, double *w_data)

Apply a Welch window to an array of input samples.

The output samples have the same scale as the input, but are in double sample format.

Parameters:
data input samples
len number of input samples
w_data output samples

Referenced by ff_lpc_calc_coefs(), ff_lpc_init(), and ff_lpc_init_x86().

void(* LPCContext::lpc_compute_autocorr)(const double *data, int len, int lag, double *autoc)

Perform autocorrelation on input samples with delay of 0 to lag.

Parameters:
data input samples. constraints: no alignment needed, but must have have at least lag*sizeof(double) valid bytes preceding it, and size must be at least (len+1)*sizeof(double) if data is 16-byte aligned or (len+2)*sizeof(double) if data is unaligned.
len number of input samples to process
lag maximum delay to calculate
autoc output autocorrelation coefficients. constraints: array size must be at least lag+1.

Referenced by ff_lpc_calc_coefs(), ff_lpc_init(), and ff_lpc_init_x86().

Definition at line 53 of file lpc.h.

Referenced by ff_lpc_calc_coefs(), and ff_lpc_init().

Definition at line 52 of file lpc.h.

Referenced by ff_lpc_calc_coefs(), and ff_lpc_init().

Definition at line 54 of file lpc.h.

Referenced by ff_lpc_end(), and ff_lpc_init().

Definition at line 55 of file lpc.h.

Referenced by ff_lpc_calc_coefs(), and ff_lpc_init().


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

Generated on Fri Oct 26 02:50:16 2012 for FFmpeg by  doxygen 1.5.8