mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
173 lines
4.7 KiB
173 lines
4.7 KiB
;****************************************************************************** |
|
;* x86 optimizations for PNG decoding |
|
;* |
|
;* Copyright (c) 2008 Loren Merritt <lorenm@u.washington.edu> |
|
;* Copyright (c) 2012 Ronald S. Bultje <rsbultje@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 "libavutil/x86/x86util.asm" |
|
|
|
SECTION_RODATA |
|
|
|
cextern pw_255 |
|
|
|
SECTION .text |
|
|
|
; %1 = nr. of xmm registers used |
|
%macro ADD_BYTES_FN 1 |
|
cglobal add_bytes_l2, 4, 6, %1, dst, src1, src2, wa, w, i |
|
%if ARCH_X86_64 |
|
movsxd waq, wad |
|
%endif |
|
xor iq, iq |
|
|
|
; vector loop |
|
mov wq, waq |
|
and waq, ~(mmsize*2-1) |
|
jmp .end_v |
|
.loop_v: |
|
movu m0, [src2q+iq] |
|
movu m1, [src2q+iq+mmsize] |
|
paddb m0, [src1q+iq] |
|
paddb m1, [src1q+iq+mmsize] |
|
movu [dstq+iq ], m0 |
|
movu [dstq+iq+mmsize], m1 |
|
add iq, mmsize*2 |
|
.end_v: |
|
cmp iq, waq |
|
jl .loop_v |
|
|
|
%if mmsize == 16 |
|
; vector loop |
|
mov waq, wq |
|
and waq, ~7 |
|
jmp .end_l |
|
.loop_l: |
|
movq mm0, [src1q+iq] |
|
paddb mm0, [src2q+iq] |
|
movq [dstq+iq ], mm0 |
|
add iq, 8 |
|
.end_l: |
|
cmp iq, waq |
|
jl .loop_l |
|
%endif |
|
|
|
; scalar loop for leftover |
|
jmp .end_s |
|
.loop_s: |
|
mov wab, [src1q+iq] |
|
add wab, [src2q+iq] |
|
mov [dstq+iq], wab |
|
inc iq |
|
.end_s: |
|
cmp iq, wq |
|
jl .loop_s |
|
REP_RET |
|
%endmacro |
|
|
|
%if ARCH_X86_32 |
|
INIT_MMX mmx |
|
ADD_BYTES_FN 0 |
|
%endif |
|
|
|
INIT_XMM sse2 |
|
ADD_BYTES_FN 2 |
|
|
|
%macro ADD_PAETH_PRED_FN 1 |
|
cglobal add_png_paeth_prediction, 5, 7, %1, dst, src, top, w, bpp, end, cntr |
|
%if ARCH_X86_64 |
|
movsxd bppq, bppd |
|
movsxd wq, wd |
|
%endif |
|
lea endq, [dstq+wq-(mmsize/2-1)] |
|
sub topq, dstq |
|
sub srcq, dstq |
|
sub dstq, bppq |
|
pxor m7, m7 |
|
|
|
PUSH dstq |
|
lea cntrq, [bppq-1] |
|
shr cntrq, 2 + mmsize/16 |
|
.bpp_loop: |
|
lea dstq, [dstq+cntrq*(mmsize/2)] |
|
movh m0, [dstq] |
|
movh m1, [topq+dstq] |
|
punpcklbw m0, m7 |
|
punpcklbw m1, m7 |
|
add dstq, bppq |
|
.loop: |
|
mova m2, m1 |
|
movh m1, [topq+dstq] |
|
mova m3, m2 |
|
punpcklbw m1, m7 |
|
mova m4, m2 |
|
psubw m3, m1 |
|
psubw m4, m0 |
|
mova m5, m3 |
|
paddw m5, m4 |
|
%if cpuflag(ssse3) |
|
pabsw m3, m3 |
|
pabsw m4, m4 |
|
pabsw m5, m5 |
|
%else ; !cpuflag(ssse3) |
|
psubw m7, m5 |
|
pmaxsw m5, m7 |
|
pxor m6, m6 |
|
pxor m7, m7 |
|
psubw m6, m3 |
|
psubw m7, m4 |
|
pmaxsw m3, m6 |
|
pmaxsw m4, m7 |
|
pxor m7, m7 |
|
%endif ; cpuflag(ssse3) |
|
mova m6, m4 |
|
pminsw m6, m5 |
|
pcmpgtw m3, m6 |
|
pcmpgtw m4, m5 |
|
mova m6, m4 |
|
pand m4, m3 |
|
pandn m6, m3 |
|
pandn m3, m0 |
|
movh m0, [srcq+dstq] |
|
pand m6, m1 |
|
pand m2, m4 |
|
punpcklbw m0, m7 |
|
paddw m0, m6 |
|
paddw m3, m2 |
|
paddw m0, m3 |
|
pand m0, [pw_255] |
|
mova m3, m0 |
|
packuswb m3, m3 |
|
movh [dstq], m3 |
|
add dstq, bppq |
|
cmp dstq, endq |
|
jl .loop |
|
|
|
mov dstq, [rsp] |
|
dec cntrq |
|
jge .bpp_loop |
|
POP dstq |
|
RET |
|
%endmacro |
|
|
|
INIT_MMX mmxext |
|
ADD_PAETH_PRED_FN 0 |
|
|
|
INIT_MMX ssse3 |
|
ADD_PAETH_PRED_FN 0
|
|
|