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FFmpeg/libavcodec/x86/qpel.asm

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x86/qpel: move fullpel and l2 functions to separate file. This way, they can be shared between mpeg4qpel and h264qpel without requiring either one to be compiled unconditionally. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
12 years ago
;******************************************************************************
Update dsputil- and SIMD-related comments to match reality more closely
11 years ago
;* SIMD-optimized quarterpel functions
x86/qpel: move fullpel and l2 functions to separate file. This way, they can be shared between mpeg4qpel and h264qpel without requiring either one to be compiled unconditionally. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
12 years ago
;* Copyright (c) 2008 Loren Merritt
;* Copyright (c) 2003-2013 Michael Niedermayer
;* Copyright (c) 2013 Daniel Kang
;*
;* 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
%macro op_avgh 3
movh %3, %2
pavgb %1, %3
movh %2, %1
%endmacro
%macro op_avg 2
pavgb %1, %2
mova %2, %1
%endmacro
%macro op_puth 2-3
movh %2, %1
%endmacro
%macro op_put 2
mova %2, %1
%endmacro
x86: Make function prototype comments in assembly code consistent This helps grepping for functions, among other things.
11 years ago
; void ff_put/avg_pixels4_l2_mmxext(uint8_t *dst, uint8_t *src1, uint8_t *src2,
; int dstStride, int src1Stride, int h)
x86/qpel: move fullpel and l2 functions to separate file. This way, they can be shared between mpeg4qpel and h264qpel without requiring either one to be compiled unconditionally. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
12 years ago
%macro PIXELS4_L2 1
%define OP op_%1h
cglobal %1_pixels4_l2, 6,6
movsxdifnidn r3, r3d
movsxdifnidn r4, r4d
test r5d, 1
je .loop
movd m0, [r1]
movd m1, [r2]
add r1, r4
add r2, 4
pavgb m0, m1
OP m0, [r0], m3
add r0, r3
dec r5d
.loop:
mova m0, [r1]
mova m1, [r1+r4]
lea r1, [r1+2*r4]
pavgb m0, [r2]
pavgb m1, [r2+4]
OP m0, [r0], m3
OP m1, [r0+r3], m3
lea r0, [r0+2*r3]
mova m0, [r1]
mova m1, [r1+r4]
lea r1, [r1+2*r4]
pavgb m0, [r2+8]
pavgb m1, [r2+12]
OP m0, [r0], m3
OP m1, [r0+r3], m3
lea r0, [r0+2*r3]
add r2, 16
sub r5d, 4
jne .loop
x86: replace explicit REP_RETs with RETs From x86inc: > On AMD cpus <=K10, an ordinary ret is slow if it immediately follows either > a branch or a branch target. So switch to a 2-byte form of ret in that case. > We can automatically detect "follows a branch", but not a branch target. > (SSSE3 is a sufficient condition to know that your cpu doesn't have this problem.) x86inc can automatically determine whether to use REP_RET rather than REP in most of these cases, so impact is minimal. Additionally, a few REP_RETs were used unnecessary, despite the return being nowhere near a branch. The only CPUs affected were AMD K10s, made between 2007 and 2011, 16 years ago and 12 years ago, respectively. In the future, everyone involved with x86inc should consider dropping REP_RETs altogether.
2 years ago
RET
x86/qpel: move fullpel and l2 functions to separate file. This way, they can be shared between mpeg4qpel and h264qpel without requiring either one to be compiled unconditionally. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
12 years ago
%endmacro
INIT_MMX mmxext
PIXELS4_L2 put
PIXELS4_L2 avg
x86: Make function prototype comments in assembly code consistent This helps grepping for functions, among other things.
11 years ago
; void ff_put/avg_pixels8_l2_mmxext(uint8_t *dst, uint8_t *src1, uint8_t *src2,
; int dstStride, int src1Stride, int h)
x86/qpel: move fullpel and l2 functions to separate file. This way, they can be shared between mpeg4qpel and h264qpel without requiring either one to be compiled unconditionally. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
12 years ago
%macro PIXELS8_L2 1
%define OP op_%1
cglobal %1_pixels8_l2, 6,6
movsxdifnidn r3, r3d
movsxdifnidn r4, r4d
test r5d, 1
je .loop
mova m0, [r1]
mova m1, [r2]
add r1, r4
add r2, 8
pavgb m0, m1
OP m0, [r0]
add r0, r3
dec r5d
.loop:
mova m0, [r1]
mova m1, [r1+r4]
lea r1, [r1+2*r4]
pavgb m0, [r2]
pavgb m1, [r2+8]
OP m0, [r0]
OP m1, [r0+r3]
lea r0, [r0+2*r3]
mova m0, [r1]
mova m1, [r1+r4]
lea r1, [r1+2*r4]
pavgb m0, [r2+16]
pavgb m1, [r2+24]
OP m0, [r0]
OP m1, [r0+r3]
lea r0, [r0+2*r3]
add r2, 32
sub r5d, 4
jne .loop
x86: replace explicit REP_RETs with RETs From x86inc: > On AMD cpus <=K10, an ordinary ret is slow if it immediately follows either > a branch or a branch target. So switch to a 2-byte form of ret in that case. > We can automatically detect "follows a branch", but not a branch target. > (SSSE3 is a sufficient condition to know that your cpu doesn't have this problem.) x86inc can automatically determine whether to use REP_RET rather than REP in most of these cases, so impact is minimal. Additionally, a few REP_RETs were used unnecessary, despite the return being nowhere near a branch. The only CPUs affected were AMD K10s, made between 2007 and 2011, 16 years ago and 12 years ago, respectively. In the future, everyone involved with x86inc should consider dropping REP_RETs altogether.
2 years ago
RET
x86/qpel: move fullpel and l2 functions to separate file. This way, they can be shared between mpeg4qpel and h264qpel without requiring either one to be compiled unconditionally. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
12 years ago
%endmacro
INIT_MMX mmxext
PIXELS8_L2 put
PIXELS8_L2 avg
x86: Make function prototype comments in assembly code consistent This helps grepping for functions, among other things.
11 years ago
; void ff_put/avg_pixels16_l2_mmxext(uint8_t *dst, uint8_t *src1, uint8_t *src2,
; int dstStride, int src1Stride, int h)
x86/qpel: move fullpel and l2 functions to separate file. This way, they can be shared between mpeg4qpel and h264qpel without requiring either one to be compiled unconditionally. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
12 years ago
%macro PIXELS16_L2 1
%define OP op_%1
cglobal %1_pixels16_l2, 6,6
movsxdifnidn r3, r3d
movsxdifnidn r4, r4d
test r5d, 1
je .loop
mova m0, [r1]
mova m1, [r1+8]
pavgb m0, [r2]
pavgb m1, [r2+8]
add r1, r4
add r2, 16
OP m0, [r0]
OP m1, [r0+8]
add r0, r3
dec r5d
.loop:
mova m0, [r1]
mova m1, [r1+8]
add r1, r4
pavgb m0, [r2]
pavgb m1, [r2+8]
OP m0, [r0]
OP m1, [r0+8]
add r0, r3
mova m0, [r1]
mova m1, [r1+8]
add r1, r4
pavgb m0, [r2+16]
pavgb m1, [r2+24]
OP m0, [r0]
OP m1, [r0+8]
add r0, r3
add r2, 32
sub r5d, 2
jne .loop
x86: replace explicit REP_RETs with RETs From x86inc: > On AMD cpus <=K10, an ordinary ret is slow if it immediately follows either > a branch or a branch target. So switch to a 2-byte form of ret in that case. > We can automatically detect "follows a branch", but not a branch target. > (SSSE3 is a sufficient condition to know that your cpu doesn't have this problem.) x86inc can automatically determine whether to use REP_RET rather than REP in most of these cases, so impact is minimal. Additionally, a few REP_RETs were used unnecessary, despite the return being nowhere near a branch. The only CPUs affected were AMD K10s, made between 2007 and 2011, 16 years ago and 12 years ago, respectively. In the future, everyone involved with x86inc should consider dropping REP_RETs altogether.
2 years ago
RET
x86/qpel: move fullpel and l2 functions to separate file. This way, they can be shared between mpeg4qpel and h264qpel without requiring either one to be compiled unconditionally. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
12 years ago
%endmacro
INIT_MMX mmxext
PIXELS16_L2 put
PIXELS16_L2 avg