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FFmpeg/libavcodec/x86/h264_weight.asm
Andreas Rheinhardt 4618f36a24 avcodec/x86/h264dsp_init: Remove obsolete MMX(EXT) functions 
x64 always has MMX, MMXEXT, SSE and SSE2 and this means
that some functions for MMX, MMXEXT and 3dnow are always
overridden by other functions (unless one e.g. explicitly
disables SSE2) for x64. So given that the only systems that
benefit from these functions are truely ancient 32bit x86s
they are removed.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2022-06-22 13:32:47 +02:00

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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
;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
;******************************************************************************
%include "libavutil/x86/x86util.asm"
SECTION .text
;-----------------------------------------------------------------------------
; biweight pred:
;
; void ff_h264_biweight_16_sse2(uint8_t *dst, uint8_t *src, int stride,
; int height, int log2_denom, int weightd,
; int weights, int offset);
; and
; void ff_h264_weight_16_sse2(uint8_t *dst, int stride, int height,
; int log2_denom, int weight, int offset);
;-----------------------------------------------------------------------------
%macro WEIGHT_SETUP 0
add r5, r5
inc r5
movd m3, r4d
movd m5, r5d
movd m6, r3d
pslld m5, m6
psrld m5, 1
%if mmsize == 16
pshuflw m3, m3, 0
pshuflw m5, m5, 0
punpcklqdq m3, m3
punpcklqdq m5, m5
%else
pshufw m3, m3, 0
pshufw m5, m5, 0
%endif
pxor m7, m7
%endmacro
%macro WEIGHT_OP 2
movh m0, [r0+%1]
movh m1, [r0+%2]
punpcklbw m0, m7
punpcklbw m1, m7
pmullw m0, m3
pmullw m1, m3
paddsw m0, m5
paddsw m1, m5
psraw m0, m6
psraw m1, m6
packuswb m0, m1
%endmacro
%macro WEIGHT_FUNC_MM 2
cglobal h264_weight_%1, 6, 6, %2
WEIGHT_SETUP
.nextrow:
WEIGHT_OP 0, mmsize/2
mova [r0], m0
add r0, r1
dec r2d
jnz .nextrow
REP_RET
%endmacro
INIT_XMM sse2
WEIGHT_FUNC_MM 16, 8
%macro WEIGHT_FUNC_HALF_MM 2
cglobal h264_weight_%1, 6, 6, %2
WEIGHT_SETUP
sar r2d, 1
lea r3, [r1*2]
.nextrow:
WEIGHT_OP 0, r1
movh [r0], m0
%if mmsize == 16
movhps [r0+r1], m0
%else
psrlq m0, 32
movh [r0+r1], m0
%endif
add r0, r3
dec r2d
jnz .nextrow
REP_RET
%endmacro
INIT_MMX mmxext
WEIGHT_FUNC_HALF_MM 4, 0
INIT_XMM sse2
WEIGHT_FUNC_HALF_MM 8, 8
%macro BIWEIGHT_SETUP 0
%if ARCH_X86_64
%define off_regd r7d
%else
%define off_regd r3d
%endif
mov off_regd, r7m
add off_regd, 1
or off_regd, 1
add r4d, 1
cmp r6d, 128
je .nonnormal
cmp r5d, 128
jne .normal
.nonnormal:
sar r5d, 1
sar r6d, 1
sar off_regd, 1
sub r4d, 1
.normal:
%if cpuflag(ssse3)
movd m4, r5d
movd m0, r6d
%else
movd m3, r5d
movd m4, r6d
%endif
movd m5, off_regd
movd m6, r4d
pslld m5, m6
psrld m5, 1
%if cpuflag(ssse3)
punpcklbw m4, m0
pshuflw m4, m4, 0
pshuflw m5, m5, 0
punpcklqdq m4, m4
punpcklqdq m5, m5
%else
%if mmsize == 16
pshuflw m3, m3, 0
pshuflw m4, m4, 0
pshuflw m5, m5, 0
punpcklqdq m3, m3
punpcklqdq m4, m4
punpcklqdq m5, m5
%else
pshufw m3, m3, 0
pshufw m4, m4, 0
pshufw m5, m5, 0
%endif
pxor m7, m7
%endif
%endmacro
%macro BIWEIGHT_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_STEPB 0
paddsw m0, m5
paddsw m1, m5
psraw m0, m6
psraw m1, m6
packuswb m0, m1
%endmacro
%macro BIWEIGHT_FUNC_MM 2
cglobal h264_biweight_%1, 7, 8, %2
BIWEIGHT_SETUP
movifnidn r3d, r3m
.nextrow:
BIWEIGHT_STEPA 0, 1, 0
BIWEIGHT_STEPA 1, 2, mmsize/2
BIWEIGHT_STEPB
mova [r0], m0
add r0, r2
add r1, r2
dec r3d
jnz .nextrow
REP_RET
%endmacro
INIT_XMM sse2
BIWEIGHT_FUNC_MM 16, 8
%macro BIWEIGHT_FUNC_HALF_MM 2
cglobal h264_biweight_%1, 7, 8, %2
BIWEIGHT_SETUP
movifnidn r3d, r3m
sar r3, 1
lea r4, [r2*2]
.nextrow:
BIWEIGHT_STEPA 0, 1, 0
BIWEIGHT_STEPA 1, 2, r2
BIWEIGHT_STEPB
movh [r0], m0
%if mmsize == 16
movhps [r0+r2], m0
%else
psrlq m0, 32
movh [r0+r2], m0
%endif
add r0, r4
add r1, r4
dec r3d
jnz .nextrow
REP_RET
%endmacro
INIT_MMX mmxext
BIWEIGHT_FUNC_HALF_MM 4, 0
INIT_XMM sse2
BIWEIGHT_FUNC_HALF_MM 8, 8
%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
INIT_XMM ssse3
cglobal h264_biweight_16, 7, 8, 8
BIWEIGHT_SETUP
movifnidn r3d, r3m
.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 r3d
jnz .nextrow
REP_RET
INIT_XMM ssse3
cglobal h264_biweight_8, 7, 8, 8
BIWEIGHT_SETUP
movifnidn r3d, r3m
sar r3, 1
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 r3d
jnz .nextrow
REP_RET
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