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FFmpeg/libavcodec/x86/h264_weight_10bit.asm
Ronald S. Bultje 87a246341b h264: use proper PROLOGUE statement for a function using 8 registers. 
Fixes crashes when using biweight on win64.
2012-04-16 08:07:21 -07:00

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;*****************************************************************************
;* MMX/SSE2/AVX-optimized 10-bit H.264 weighted prediction code
;*****************************************************************************
;* Copyright (C) 2005-2011 x264 project
;*
;* Authors: Daniel Kang <daniel.d.kang@gmail.com>
;*
;* This file is part of Libav.
;*
;* Libav 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.
;*
;* Libav 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 Libav; if not, write to the Free Software
;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
;******************************************************************************
%include "x86inc.asm"
%include "x86util.asm"
SECTION_RODATA 32
pw_pixel_max: times 8 dw ((1 << 10)-1)
sq_1: dq 1
dq 0
cextern pw_1
SECTION .text
;-----------------------------------------------------------------------------
; void h264_weight(uint8_t *dst, int stride, int height, int log2_denom,
; int weight, int offset);
;-----------------------------------------------------------------------------
%macro WEIGHT_PROLOGUE 0
.prologue
PROLOGUE 0,6,8
movifnidn r0, r0mp
movifnidn r1d, r1m
movifnidn r2d, r2m
movifnidn r4d, r4m
movifnidn r5d, r5m
%endmacro
%macro WEIGHT_SETUP 1
mova m0, [pw_1]
movd m2, r3m
pslld m0, m2 ; 1<<log2_denom
SPLATW m0, m0
shl r5, 19 ; *8, move to upper half of dword
lea r5, [r5+r4*2+0x10000]
movd m3, r5d ; weight<<1 | 1+(offset<<(3))
pshufd m3, m3, 0
mova m4, [pw_pixel_max]
paddw m2, [sq_1] ; log2_denom+1
%ifnidn %1, sse4
pxor m7, m7
%endif
%endmacro
%macro WEIGHT_OP 2-3
%if %0==2
mova m5, [r0+%2]
punpckhwd m6, m5, m0
punpcklwd m5, m0
%else
movq m5, [r0+%2]
movq m6, [r0+%3]
punpcklwd m5, m0
punpcklwd m6, m0
%endif
pmaddwd m5, m3
pmaddwd m6, m3
psrad m5, m2
psrad m6, m2
%ifidn %1, sse4
packusdw m5, m6
pminsw m5, m4
%else
packssdw m5, m6
CLIPW m5, m7, m4
%endif
%endmacro
%macro WEIGHT_FUNC_DBL 1
cglobal h264_weight_16_10_%1
WEIGHT_PROLOGUE
WEIGHT_SETUP %1
.nextrow
WEIGHT_OP %1, 0
mova [r0 ], m5
WEIGHT_OP %1, 16
mova [r0+16], m5
add r0, r1
dec r2d
jnz .nextrow
REP_RET
%endmacro
INIT_XMM
WEIGHT_FUNC_DBL sse2
WEIGHT_FUNC_DBL sse4
%macro WEIGHT_FUNC_MM 1
cglobal h264_weight_8_10_%1
WEIGHT_PROLOGUE
WEIGHT_SETUP %1
.nextrow
WEIGHT_OP %1, 0
mova [r0], m5
add r0, r1
dec r2d
jnz .nextrow
REP_RET
%endmacro
INIT_XMM
WEIGHT_FUNC_MM sse2
WEIGHT_FUNC_MM sse4
%macro WEIGHT_FUNC_HALF_MM 1
cglobal h264_weight_4_10_%1
WEIGHT_PROLOGUE
sar r2d, 1
WEIGHT_SETUP %1
lea r3, [r1*2]
.nextrow
WEIGHT_OP %1, 0, r1
movh [r0], m5
movhps [r0+r1], m5
add r0, r3
dec r2d
jnz .nextrow
REP_RET
%endmacro
INIT_XMM
WEIGHT_FUNC_HALF_MM sse2
WEIGHT_FUNC_HALF_MM sse4
;-----------------------------------------------------------------------------
; void h264_biweight(uint8_t *dst, uint8_t *src, int stride, int height,
; int log2_denom, int weightd, int weights, int offset);
;-----------------------------------------------------------------------------
%if ARCH_X86_32
DECLARE_REG_TMP 3
%else
DECLARE_REG_TMP 7
%endif
%macro BIWEIGHT_PROLOGUE 0
.prologue
PROLOGUE 0,8,8
movifnidn r0, r0mp
movifnidn r1, r1mp
movifnidn r2d, r2m
movifnidn r5d, r5m
movifnidn r6d, r6m
movifnidn t0d, r7m
%endmacro
%macro BIWEIGHT_SETUP 1
lea t0, [t0*4+1] ; (offset<<2)+1
or t0, 1
shl r6, 16
or r5, r6
movd m4, r5d ; weightd | weights
movd m5, t0d ; (offset+1)|1
movd m6, r4m ; log2_denom
pslld m5, m6 ; (((offset<<2)+1)|1)<<log2_denom
paddd m6, [sq_1]
pshufd m4, m4, 0
pshufd m5, m5, 0
mova m3, [pw_pixel_max]
movifnidn r3d, r3m
%ifnidn %1, sse4
pxor m7, m7
%endif
%endmacro
%macro BIWEIGHT 2-3
%if %0==2
mova m0, [r0+%2]
mova m1, [r1+%2]
punpckhwd m2, m0, m1
punpcklwd m0, m1
%else
movq m0, [r0+%2]
movq m1, [r1+%2]
punpcklwd m0, m1
movq m2, [r0+%3]
movq m1, [r1+%3]
punpcklwd m2, m1
%endif
pmaddwd m0, m4
pmaddwd m2, m4
paddd m0, m5
paddd m2, m5
psrad m0, m6
psrad m2, m6
%ifidn %1, sse4
packusdw m0, m2
pminsw m0, m3
%else
packssdw m0, m2
CLIPW m0, m7, m3
%endif
%endmacro
%macro BIWEIGHT_FUNC_DBL 1
cglobal h264_biweight_16_10_%1
BIWEIGHT_PROLOGUE
BIWEIGHT_SETUP %1
.nextrow
BIWEIGHT %1, 0
mova [r0 ], m0
BIWEIGHT %1, 16
mova [r0+16], m0
add r0, r2
add r1, r2
dec r3d
jnz .nextrow
REP_RET
%endmacro
INIT_XMM
BIWEIGHT_FUNC_DBL sse2
BIWEIGHT_FUNC_DBL sse4
%macro BIWEIGHT_FUNC 1
cglobal h264_biweight_8_10_%1
BIWEIGHT_PROLOGUE
BIWEIGHT_SETUP %1
.nextrow
BIWEIGHT %1, 0
mova [r0], m0
add r0, r2
add r1, r2
dec r3d
jnz .nextrow
REP_RET
%endmacro
INIT_XMM
BIWEIGHT_FUNC sse2
BIWEIGHT_FUNC sse4
%macro BIWEIGHT_FUNC_HALF 1
cglobal h264_biweight_4_10_%1
BIWEIGHT_PROLOGUE
BIWEIGHT_SETUP %1
sar r3d, 1
lea r4, [r2*2]
.nextrow
BIWEIGHT %1, 0, r2
movh [r0 ], m0
movhps [r0+r2], m0
add r0, r4
add r1, r4
dec r3d
jnz .nextrow
REP_RET
%endmacro
INIT_XMM
BIWEIGHT_FUNC_HALF sse2
BIWEIGHT_FUNC_HALF sse4
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