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;******************************************************************************
;* add_bitmaps.asm: SSE2 and x86 add_bitmaps
;******************************************************************************
;* Copyright (C) 2013 Rodger Combs <rcombs@rcombs.me>
;*
;* This file is part of libass.
;*
;* Permission to use, copy, modify, and distribute this software for any
;* purpose with or without fee is hereby granted, provided that the above
;* copyright notice and this permission notice appear in all copies.
;*
;* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
;* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
;* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
;* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
;* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
;* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
;* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
;******************************************************************************
%include "x86/x86inc.asm"
SECTION_RODATA 32
words_255: dw 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF
SECTION .text
;------------------------------------------------------------------------------
; void add_bitmaps( uint8_t *dst, intptr_t dst_stride,
; uint8_t *src, intptr_t src_stride,
; intptr_t height, intptr_t width );
;------------------------------------------------------------------------------
INIT_XMM
cglobal add_bitmaps_x86, 6,7
.skip_prologue:
imul r4, r3
add r4, r2
PUSH r4
mov r4, r3
.height_loop:
xor r6, r6 ; x offset
.stride_loop:
movzx r3, byte [r0 + r6]
add r3b, byte [r2 + r6]
jnc .continue
mov r3b, 0xff
.continue:
mov byte [r0 + r6], r3b
inc r6
cmp r6, r5
jl .stride_loop ; still in scan line
add r0, r1
add r2, r4
cmp r2, [rsp]
jl .height_loop
ADD rsp, gprsize
RET
%macro ADD_BITMAPS 0
cglobal add_bitmaps, 6,7
.skip_prologue:
cmp r5, mmsize
%if mmsize == 16
jl add_bitmaps_x86.skip_prologue
%else
jl add_bitmaps_sse2.skip_prologue
%endif
%if mmsize == 32
vzeroupper
%endif
imul r4, r3
add r4, r2 ; last address
.height_loop:
xor r6, r6 ; x offset
.stride_loop:
movu m0, [r0 + r6]
paddusb m0, [r2 + r6]
movu [r0 + r6], m0
add r6, mmsize
cmp r6, r5
jl .stride_loop ; still in scan line
add r0, r1
add r2, r3
cmp r2, r4
jl .height_loop
RET
%endmacro
INIT_XMM sse2
ADD_BITMAPS
INIT_YMM avx2
ADD_BITMAPS
;------------------------------------------------------------------------------
; void sub_bitmaps( uint8_t *dst, intptr_t dst_stride,
; uint8_t *src, intptr_t src_stride,
; intptr_t height, intptr_t width );
;------------------------------------------------------------------------------
INIT_XMM
cglobal sub_bitmaps_x86, 6,10
.skip_prologue:
imul r4, r3
add r4, r2 ; last address
PUSH r4
mov r4, r3
.height_loop:
xor r6, r6 ; x offset
.stride_loop:
mov r3b, byte [r0 + r6]
sub r3b, byte [r2 + r6]
jnc .continue
mov r3b, 0x0
.continue:
mov byte [r0 + r6], r3b
inc r6
cmp r6, r5
jl .stride_loop ; still in scan line
add r0, r1
add r2, r4
cmp r2, [rsp]
jl .height_loop
ADD rsp, gprsize
RET
%if ARCH_X86_64
%macro SUB_BITMAPS 0
cglobal sub_bitmaps, 6,10
.skip_prologue:
cmp r5, mmsize
%if mmsize == 16
jl sub_bitmaps_x86.skip_prologue
%else
jl sub_bitmaps_sse2.skip_prologue
%endif
%if mmsize == 32
vzeroupper
%endif
imul r4, r3
add r4, r2 ; last address
mov r7, r5
and r7, -mmsize ; &= (16);
xor r9, r9
.height_loop:
xor r6, r6 ; x offset
.stride_loop:
movu m0, [r0 + r6]
movu m1, [r2 + r6]
psubusb m0, m1
movu [r0 + r6], m0
add r6, mmsize
cmp r6, r7
jl .stride_loop ; still in scan line
.stride_loop2:
cmp r6, r5
jge .finish
movzx r8, byte [r0 + r6]
sub r8b, byte [r2 + r6]
cmovc r8, r9
mov byte [r0 + r6], r8b
inc r6
jmp .stride_loop2
.finish:
add r0, r1
add r2, r3
cmp r2, r4
jl .height_loop
RET
%endmacro
INIT_XMM sse2
SUB_BITMAPS
INIT_YMM avx2
SUB_BITMAPS
;------------------------------------------------------------------------------
; void mul_bitmaps( uint8_t *dst, intptr_t dst_stride,
; uint8_t *src1, intptr_t src1_stride,
; uint8_t *src2, intptr_t src2_stride,
; intptr_t width, intptr_t height );
;------------------------------------------------------------------------------
INIT_XMM
cglobal mul_bitmaps_x86, 8,12
.skip_prologue:
imul r7, r3
add r7, r2 ; last address
.height_loop:
xor r8, r8 ; x offset
.stride_loop:
movzx r9, byte [r2 + r8]
movzx r10, byte [r4 + r8]
imul r9, r10
add r9, 255
shr r9, 8
mov byte [r0 + r8], r9b
inc r8
cmp r8, r6
jl .stride_loop ; still in scan line
add r0, r1
add r2, r3
add r4, r5
cmp r2, r7
jl .height_loop
RET
INIT_XMM sse2
cglobal mul_bitmaps, 8,12
.skip_prologue:
cmp r6, 8
jl mul_bitmaps_x86.skip_prologue
imul r7, r3
add r7, r2 ; last address
pxor xmm2, xmm2
movdqa xmm3, [words_255]
mov r9, r6
and r9, -8 ; &= (~8);
.height_loop:
xor r8, r8 ; x offset
.stride_loop:
movq xmm0, [r2 + r8]
movq xmm1, [r4 + r8]
punpcklbw xmm0, xmm2
punpcklbw xmm1, xmm2
pmullw xmm0, xmm1
paddw xmm0, xmm3
psrlw xmm0, 0x08
packuswb xmm0, xmm0
movq [r0 + r8], xmm0
add r8, 8
cmp r8, r9
jl .stride_loop ; still in scan line
.stride_loop2:
cmp r8, r6
jge .finish
movzx r10, byte [r2 + r8]
movzx r11, byte [r4 + r8]
imul r10, r11
add r10, 255
shr r10, 8
mov byte [r0 + r8], r10b
inc r8
jmp .stride_loop2
.finish:
add r0, r1
add r2, r3
add r4, r5
cmp r2, r7
jl .height_loop
RET
INIT_YMM avx2
cglobal mul_bitmaps, 8,12
cmp r6, 16
jl mul_bitmaps_sse2.skip_prologue
%if mmsize == 32
vzeroupper
%endif
imul r7, r3
add r7, r2 ; last address
vpxor ymm2, ymm2
vmovdqa ymm3, [words_255]
mov r9, r6
and r9, -16 ; &= (~16);
.height_loop:
xor r8, r8 ; x offset
.stride_loop:
vmovdqu xmm0, [r2 + r8]
vpermq ymm0, ymm0, 0x10
vmovdqu xmm1, [r4 + r8]
vpermq ymm1, ymm1, 0x10
vpunpcklbw ymm0, ymm0, ymm2
vpunpcklbw ymm1, ymm1, ymm2
vpmullw ymm0, ymm0, ymm1
vpaddw ymm0, ymm0, ymm3
vpsrlw ymm0, ymm0, 0x08
vextracti128 xmm4, ymm0, 0x1
vpackuswb ymm0, ymm0, ymm4
vmovdqa [r0 + r8], xmm0
add r8, 16
cmp r8, r9
jl .stride_loop ; still in scan line
.stride_loop2:
cmp r8, r6
jge .finish
movzx r10, byte [r2 + r8]
movzx r11, byte [r4 + r8]
imul r10, r11
add r10, 255
shr r10, 8
mov byte [r0 + r8], r10b
inc r8
jmp .stride_loop2
.finish:
add r0, r1
add r2, r3
add r4, r5
cmp r2, r7
jl .height_loop
RET
%endif
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