ref: 6e815e708d23483467aec6be06f9d9a5f25b62a6
dir: /codec/decoder/core/x86/dct.asm/
;*!
;* \copy
;* Copyright (c) 2009-2013, Cisco Systems
;* All rights reserved.
;*
;* Redistribution and use in source and binary forms, with or without
;* modification, are permitted provided that the following conditions
;* are met:
;*
;* ?Redistributions of source code must retain the above copyright
;* notice, this list of conditions and the following disclaimer.
;*
;* ?Redistributions in binary form must reproduce the above copyright
;* notice, this list of conditions and the following disclaimer in
;* the documentation and/or other materials provided with the
;* distribution.
;*
;* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
;* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
;* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
;* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
;* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
;* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
;* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
;* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
;* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
;* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
;* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
;* POSSIBILITY OF SUCH DAMAGE.
;*
;*
;* dct.asm
;*
;* Abstract
;* WelsDctFourT4_sse2
;*
;* History
;* 8/4/2009 Created
;*
;*
;*************************************************************************/
%include "asm_inc.asm"
;*******************************************************************************
; Macros and other preprocessor constants
;*******************************************************************************
%macro MMX_SumSubDiv2 3
movq %3, %2
psraw %3, $01
paddw %3, %1
psraw %1, $01
psubw %1, %2
%endmacro
%macro MMX_SumSub 3
movq %3, %2
psubw %2, %1
paddw %1, %3
%endmacro
%macro MMX_IDCT 6
MMX_SumSub %4, %5, %6
MMX_SumSubDiv2 %3, %2, %1
MMX_SumSub %1, %4, %6
MMX_SumSub %3, %5, %6
%endmacro
%macro MMX_StoreDiff4P 5
movd %2, %5
punpcklbw %2, %4
paddw %1, %3
psraw %1, $06
paddsw %1, %2
packuswb %1, %2
movd %5, %1
%endmacro
;*******************************************************************************
; Code
;*******************************************************************************
SECTION .text
;*******************************************************************************
; void IdctResAddPred_mmx( uint8_t *pPred, const int32_t kiStride, int16_t *pRs )
;*******************************************************************************
WELS_EXTERN IdctResAddPred_mmx
%assign push_num 0
LOAD_3_PARA
SIGN_EXTENSION r1, r1d
movq mm0, [r2+ 0]
movq mm1, [r2+ 8]
movq mm2, [r2+16]
movq mm3, [r2+24]
MMX_Trans4x4W mm0, mm1, mm2, mm3, mm4
MMX_IDCT mm1, mm2, mm3, mm4, mm0, mm6
MMX_Trans4x4W mm1, mm3, mm0, mm4, mm2
MMX_IDCT mm3, mm0, mm4, mm2, mm1, mm6
WELS_Zero mm7
WELS_DW32 mm6
MMX_StoreDiff4P mm3, mm0, mm6, mm7, [r0]
MMX_StoreDiff4P mm4, mm0, mm6, mm7, [r0+r1]
lea r0, [r0+2*r1]
MMX_StoreDiff4P mm1, mm0, mm6, mm7, [r0]
MMX_StoreDiff4P mm2, mm0, mm6, mm7, [r0+r1]
emms
ret