libavcodec/x86/lpc_mmx.c File Reference

#include "libavutil/x86_cpu.h"
#include "libavutil/cpu.h"
#include "libavcodec/lpc.h"

Go to the source code of this file.

Defines

#define WELCH(MOVPD, offset)

Functions

static void lpc_apply_welch_window_sse2 (const int32_t *data, int len, double *w_data)
static void lpc_compute_autocorr_sse2 (const double *data, int len, int lag, double *autoc)
av_cold void ff_lpc_init_x86 (LPCContext *c)


Define Documentation

#define WELCH ( MOVPD,
offset   ) 

Value:

"1:                                    \n\t"\
        "movapd   %%xmm7,  %%xmm1              \n\t"\
        "mulpd    %%xmm1,  %%xmm1              \n\t"\
        "movapd   %%xmm6,  %%xmm0              \n\t"\
        "subpd    %%xmm1,  %%xmm0              \n\t"\
        "pshufd   $0x4e,   %%xmm0, %%xmm1      \n\t"\
        "cvtpi2pd (%3,%0), %%xmm2              \n\t"\
        "cvtpi2pd "#offset"*4(%3,%1), %%xmm3   \n\t"\
        "mulpd    %%xmm0,  %%xmm2              \n\t"\
        "mulpd    %%xmm1,  %%xmm3              \n\t"\
        "movapd   %%xmm2, (%2,%0,2)            \n\t"\
        MOVPD"    %%xmm3, "#offset"*8(%2,%1,2) \n\t"\
        "subpd    %%xmm5,  %%xmm7              \n\t"\
        "sub      $8,      %1                  \n\t"\
        "add      $8,      %0                  \n\t"\
        "jl 1b                                 \n\t"\

Referenced by lpc_apply_welch_window_sse2().


Function Documentation

av_cold void ff_lpc_init_x86 ( LPCContext c  ) 

Definition at line 139 of file lpc_mmx.c.

Referenced by ff_lpc_init().

static void lpc_apply_welch_window_sse2 ( const int32_t *  data,
int  len,
double *  w_data 
) [static]

Definition at line 26 of file lpc_mmx.c.

Referenced by ff_lpc_init_x86().

static void lpc_compute_autocorr_sse2 ( const double *  data,
int  len,
int  lag,
double *  autoc 
) [static]

Definition at line 73 of file lpc_mmx.c.

Referenced by ff_lpc_init_x86().


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