libavcodec/x86/flacdsp_mmx.c File Reference

#include "libavutil/x86_cpu.h"
#include "dsputil_mmx.h"

Go to the source code of this file.

Defines
#define	WELCH(MOVPD, offset)
Functions
static void	apply_welch_window_sse2 (const int32_t *data, int len, double *w_data)
void	ff_flac_compute_autocorr_sse2 (const int32_t *data, int len, int lag, double *autoc)

---

Define Documentation

#define WELCH	(	MOVPD,
		offset		)

Value:

__asm__ volatile(\
        "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"\
        :"+&r"(i), "+&r"(j)\
        :"r"(w_data+n2), "r"(data+n2)\
    );

Referenced by apply_welch_window_sse2().

---

Function Documentation

static void apply_welch_window_sse2	(	const int32_t *	data,
		int	len,
		double *	w_data
	)			[static]

Definition at line 25 of file flacdsp_mmx.c.

Referenced by ff_flac_compute_autocorr_sse2().

void ff_flac_compute_autocorr_sse2	(	const int32_t *	data,
		int	len,
		int	lag,
		double *	autoc
	)

Definition at line 68 of file flacdsp_mmx.c.

Referenced by dsputilenc_init_mmx().