shithub: openh264

ref: 1f770c488cfd5400e6e0092a3e49aef841f6c5de
dir: /codec/encoder/core/x86/dct.asm/

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;*!
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;*     Copyright (c)  2009-2013, Cisco Systems
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;*
;*  dct.asm
;*
;*  History
;*      8/4/2009 Created
;*
;*
;*************************************************************************/

%include "asm_inc.asm"

SECTION .text

;***********************************************************************
; SSE2 functions
;***********************************************************************

%macro SSE2_SumSubD 3
    movdqa  %3, %2
    paddd   %2, %1
    psubd   %1, %3
%endmacro

%macro SSE2_SumSubDiv2D 4
    paddd   %1, %2
    paddd   %1, %3
    psrad   %1,  1
    movdqa  %4, %1
    psubd   %4, %2
%endmacro
%macro SSE2_Load4Col    5
    movsx       r2,     WORD[%5]
    movd        %1,         r2d
    movsx       r2,     WORD[%5 + 0x20]
    movd        %2,         r2d
    punpckldq   %1,         %2
    movsx       r2,     WORD[%5 + 0x80]
    movd        %3,         r2d
    movsx       r2,     WORD[%5 + 0xa0]
    movd        %4,         r2d
    punpckldq   %3,         %4
    punpcklqdq  %1,         %3
%endmacro

;***********************************************************************
;void WelsHadamardT4Dc_sse2( int16_t *luma_dc, int16_t *pDct)
;***********************************************************************
WELS_EXTERN WelsHadamardT4Dc_sse2
    %assign push_num 0
    LOAD_2_PARA
    PUSH_XMM 8
    SSE2_Load4Col       xmm1, xmm5, xmm6, xmm0, r1
    SSE2_Load4Col       xmm2, xmm5, xmm6, xmm0, r1 + 0x40
    SSE2_Load4Col       xmm3, xmm5, xmm6, xmm0, r1 + 0x100
    SSE2_Load4Col       xmm4, xmm5, xmm6, xmm0, r1 + 0x140

    SSE2_SumSubD        xmm1, xmm2, xmm7
    SSE2_SumSubD        xmm3, xmm4, xmm7
    SSE2_SumSubD        xmm2, xmm4, xmm7
    SSE2_SumSubD        xmm1, xmm3, xmm7

    SSE2_Trans4x4D      xmm4, xmm2, xmm1, xmm3, xmm5    ; pOut: xmm4,xmm3,xmm5,xmm1

    SSE2_SumSubD        xmm4, xmm3, xmm7
    SSE2_SumSubD        xmm5, xmm1, xmm7

    WELS_DD1 xmm6
    SSE2_SumSubDiv2D    xmm3, xmm1, xmm6, xmm0          ; pOut: xmm3 = (xmm3+xmm1+1)/2, xmm0 = (xmm3-xmm1+1)/2
    SSE2_SumSubDiv2D    xmm4, xmm5, xmm6, xmm1          ; pOut: xmm4 = (xmm4+xmm5+1)/2, xmm1 = (xmm4-xmm5+1)/2
    SSE2_Trans4x4D      xmm3, xmm0, xmm1, xmm4, xmm2    ; pOut: xmm3,xmm4,xmm2,xmm1

    packssdw    xmm3,   xmm4
    packssdw    xmm2,   xmm1
    movdqa  [r0+ 0],   xmm3
    movdqa  [r0+16],   xmm2

    POP_XMM
    ret