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;*****************************************************************************
;* SSE2-optimized weighted prediction code
;*****************************************************************************
;* Copyright (c) 2004-2005 Michael Niedermayer, Loren Merritt
;* Copyright (C) 2010 Eli Friedman <eli.friedman@gmail.com>
;*
;* This file is part of FFmpeg.
;*
;* FFmpeg is free software; you can redistribute it and/or
;* modify it under the terms of the GNU Lesser General Public
;* License as published by the Free Software Foundation; either
;* version 2.1 of the License, or (at your option) any later version.
;*
;* FFmpeg is distributed in the hope that it will be useful,
;* but WITHOUT ANY WARRANTY; without even the implied warranty of
;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;* Lesser General Public License for more details.
;*
;* You should have received a copy of the GNU Lesser General Public
;* License along with FFmpeg; if not, write to the Free Software
;* 51, Inc., Foundation Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
;******************************************************************************
%include "x86inc.asm"
SECTION .text
INIT_XMM
;-----------------------------------------------------------------------------
; biweight pred:
;
; void h264_biweight_16x16_sse2(uint8_t *dst, uint8_t *src, int stride,
; int log2_denom, int weightd, int weights,
; int offset);
;-----------------------------------------------------------------------------
%macro BIWEIGHT_SSE2_SETUP 0
add r6, 1
or r6, 1
add r3, 1
movd m3, r4
movd m4, r5
movd m5, r6
movd m6, r3
pslld m5, m6
psrld m5, 1
pshuflw m3, m3, 0
pshuflw m4, m4, 0
pshuflw m5, m5, 0
punpcklqdq m3, m3
punpcklqdq m4, m4
punpcklqdq m5, m5
pxor m7, m7
%endmacro
%macro BIWEIGHT_SSE2_STEPA 3
movh m%1, [r0+%3]
movh m%2, [r1+%3]
punpcklbw m%1, m7
punpcklbw m%2, m7
pmullw m%1, m3
pmullw m%2, m4
paddsw m%1, m%2
%endmacro
%macro BIWEIGHT_SSE2_STEPB 0
paddsw m0, m5
paddsw m1, m5
psraw m0, m6
psraw m1, m6
packuswb m0, m1
%endmacro
cglobal h264_biweight_16x16_sse2, 7, 7, 8
BIWEIGHT_SSE2_SETUP
mov r3, 16
.nextrow
BIWEIGHT_SSE2_STEPA 0, 1, 0
BIWEIGHT_SSE2_STEPA 1, 2, 8
BIWEIGHT_SSE2_STEPB
mova [r0], m0
add r0, r2
add r1, r2
dec r3
jnz .nextrow
REP_RET
cglobal h264_biweight_8x8_sse2, 7, 7, 8
BIWEIGHT_SSE2_SETUP
mov r3, 4
lea r4, [r2*2]
.nextrow
BIWEIGHT_SSE2_STEPA 0, 1, 0
BIWEIGHT_SSE2_STEPA 1, 2, r2
BIWEIGHT_SSE2_STEPB
movh [r0], m0
movhps [r0+r2], m0
add r0, r4
add r1, r4
dec r3
jnz .nextrow
REP_RET
%macro BIWEIGHT_SSSE3_SETUP 0
add r6, 1
or r6, 1
add r3, 1
movd m4, r4
movd m0, r5
movd m5, r6
movd m6, r3
pslld m5, m6
psrld m5, 1
punpcklbw m4, m0
pshuflw m4, m4, 0
pshuflw m5, m5, 0
punpcklqdq m4, m4
punpcklqdq m5, m5
%endmacro
%macro BIWEIGHT_SSSE3_OP 0
pmaddubsw m0, m4
pmaddubsw m2, m4
paddsw m0, m5
paddsw m2, m5
psraw m0, m6
psraw m2, m6
packuswb m0, m2
%endmacro
cglobal h264_biweight_16x16_ssse3, 7, 7, 8
BIWEIGHT_SSSE3_SETUP
mov r3, 16
.nextrow
movh m0, [r0]
movh m2, [r0+8]
movh m3, [r1+8]
punpcklbw m0, [r1]
punpcklbw m2, m3
BIWEIGHT_SSSE3_OP
mova [r0], m0
add r0, r2
add r1, r2
dec r3
jnz .nextrow
REP_RET
cglobal h264_biweight_8x8_ssse3, 7, 7, 8
BIWEIGHT_SSSE3_SETUP
mov r3, 4
lea r4, [r2*2]
.nextrow
movh m0, [r0]
movh m1, [r1]
movh m2, [r0+r2]
movh m3, [r1+r2]
punpcklbw m0, m1
punpcklbw m2, m3
BIWEIGHT_SSSE3_OP
movh [r0], m0
movhps [r0+r2], m0
add r0, r4
add r1, r4
dec r3
jnz .nextrow
REP_RET
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