kc3-lang/libjpeg-turbo/simd/jdsample-sse2-64.asm
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Hash : 123f7258
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Date : 2016-05-24T10:23:56
Format copyright headers more consistently The IJG convention is to format copyright notices as: Copyright (C) YYYY, Owner. We try to maintain this convention for any code that is part of the libjpeg API library (with the exception of preserving the copyright notices from Cendio's code verbatim, since those predate libjpeg-turbo.) Note that the phrase "All Rights Reserved" is no longer necessary, since all Buenos Aires Convention signatories signed onto the Berne Convention in 2000. However, our convention is to retain this phrase for any files that have a self-contained copyright header but to leave it off of any files that refer to another file for conditions of distribution and use. For instance, all of the non-SIMD files in the libjpeg API library refer to README.ijg, and the copyright message in that file contains "All Rights Reserved", so it is unnecessary to add it to the individual files. The TurboJPEG code retains my preferred formatting convention for copyright notices, which is based on that of VirtualGL (where the TurboJPEG API originated.)
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simd/jdsample-sse2-64.asm
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; ; jdsample.asm - upsampling (64-bit SSE2) ; ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB ; Copyright (C) 2009, D. R. Commander. ; ; Based on the x86 SIMD extension for IJG JPEG library ; Copyright (C) 1999-2006, MIYASAKA Masaru. ; For conditions of distribution and use, see copyright notice in jsimdext.inc ; ; This file should be assembled with NASM (Netwide Assembler), ; can *not* be assembled with Microsoft's MASM or any compatible ; assembler (including Borland's Turbo Assembler). ; NASM is available from http://nasm.sourceforge.net/ or ; http://sourceforge.net/project/showfiles.php?group_id=6208 ; ; [TAB8] %include "jsimdext.inc" ; -------------------------------------------------------------------------- SECTION SEG_CONST alignz 16 global EXTN(jconst_fancy_upsample_sse2) EXTN(jconst_fancy_upsample_sse2): PW_ONE times 8 dw 1 PW_TWO times 8 dw 2 PW_THREE times 8 dw 3 PW_SEVEN times 8 dw 7 PW_EIGHT times 8 dw 8 alignz 16 ; -------------------------------------------------------------------------- SECTION SEG_TEXT BITS 64 ; ; Fancy processing for the common case of 2:1 horizontal and 1:1 vertical. ; ; The upsampling algorithm is linear interpolation between pixel centers, ; also known as a "triangle filter". This is a good compromise between ; speed and visual quality. The centers of the output pixels are 1/4 and 3/4 ; of the way between input pixel centers. ; ; GLOBAL(void) ; jsimd_h2v1_fancy_upsample_sse2 (int max_v_samp_factor, ; JDIMENSION downsampled_width, ; JSAMPARRAY input_data, ; JSAMPARRAY *output_data_ptr); ; ; r10 = int max_v_samp_factor ; r11 = JDIMENSION downsampled_width ; r12 = JSAMPARRAY input_data ; r13 = JSAMPARRAY *output_data_ptr align 16 global EXTN(jsimd_h2v1_fancy_upsample_sse2) EXTN(jsimd_h2v1_fancy_upsample_sse2): push rbp mov rax,rsp mov rbp,rsp collect_args mov eax, r11d ; colctr test rax,rax jz near .return mov rcx, r10 ; rowctr test rcx,rcx jz near .return mov rsi, r12 ; input_data mov rdi, r13 mov rdi, JSAMPARRAY [rdi] ; output_data .rowloop: push rax ; colctr push rdi push rsi mov rsi, JSAMPROW [rsi] ; inptr mov rdi, JSAMPROW [rdi] ; outptr test rax, SIZEOF_XMMWORD-1 jz short .skip mov dl, JSAMPLE [rsi+(rax-1)*SIZEOF_JSAMPLE] mov JSAMPLE [rsi+rax*SIZEOF_JSAMPLE], dl ; insert a dummy sample .skip: pxor xmm0,xmm0 ; xmm0=(all 0's) pcmpeqb xmm7,xmm7 psrldq xmm7,(SIZEOF_XMMWORD-1) pand xmm7, XMMWORD [rsi+0*SIZEOF_XMMWORD] add rax, byte SIZEOF_XMMWORD-1 and rax, byte -SIZEOF_XMMWORD cmp rax, byte SIZEOF_XMMWORD ja short .columnloop .columnloop_last: pcmpeqb xmm6,xmm6 pslldq xmm6,(SIZEOF_XMMWORD-1) pand xmm6, XMMWORD [rsi+0*SIZEOF_XMMWORD] jmp short .upsample .columnloop: movdqa xmm6, XMMWORD [rsi+1*SIZEOF_XMMWORD] pslldq xmm6,(SIZEOF_XMMWORD-1) .upsample: movdqa xmm1, XMMWORD [rsi+0*SIZEOF_XMMWORD] movdqa xmm2,xmm1 movdqa xmm3,xmm1 ; xmm1=( 0 1 2 ... 13 14 15) pslldq xmm2,1 ; xmm2=(-- 0 1 ... 12 13 14) psrldq xmm3,1 ; xmm3=( 1 2 3 ... 14 15 --) por xmm2,xmm7 ; xmm2=(-1 0 1 ... 12 13 14) por xmm3,xmm6 ; xmm3=( 1 2 3 ... 14 15 16) movdqa xmm7,xmm1 psrldq xmm7,(SIZEOF_XMMWORD-1) ; xmm7=(15 -- -- ... -- -- --) movdqa xmm4,xmm1 punpcklbw xmm1,xmm0 ; xmm1=( 0 1 2 3 4 5 6 7) punpckhbw xmm4,xmm0 ; xmm4=( 8 9 10 11 12 13 14 15) movdqa xmm5,xmm2 punpcklbw xmm2,xmm0 ; xmm2=(-1 0 1 2 3 4 5 6) punpckhbw xmm5,xmm0 ; xmm5=( 7 8 9 10 11 12 13 14) movdqa xmm6,xmm3 punpcklbw xmm3,xmm0 ; xmm3=( 1 2 3 4 5 6 7 8) punpckhbw xmm6,xmm0 ; xmm6=( 9 10 11 12 13 14 15 16) pmullw xmm1,[rel PW_THREE] pmullw xmm4,[rel PW_THREE] paddw xmm2,[rel PW_ONE] paddw xmm5,[rel PW_ONE] paddw xmm3,[rel PW_TWO] paddw xmm6,[rel PW_TWO] paddw xmm2,xmm1 paddw xmm5,xmm4 psrlw xmm2,2 ; xmm2=OutLE=( 0 2 4 6 8 10 12 14) psrlw xmm5,2 ; xmm5=OutHE=(16 18 20 22 24 26 28 30) paddw xmm3,xmm1 paddw xmm6,xmm4 psrlw xmm3,2 ; xmm3=OutLO=( 1 3 5 7 9 11 13 15) psrlw xmm6,2 ; xmm6=OutHO=(17 19 21 23 25 27 29 31) psllw xmm3,BYTE_BIT psllw xmm6,BYTE_BIT por xmm2,xmm3 ; xmm2=OutL=( 0 1 2 ... 13 14 15) por xmm5,xmm6 ; xmm5=OutH=(16 17 18 ... 29 30 31) movdqa XMMWORD [rdi+0*SIZEOF_XMMWORD], xmm2 movdqa XMMWORD [rdi+1*SIZEOF_XMMWORD], xmm5 sub rax, byte SIZEOF_XMMWORD add rsi, byte 1*SIZEOF_XMMWORD ; inptr add rdi, byte 2*SIZEOF_XMMWORD ; outptr cmp rax, byte SIZEOF_XMMWORD ja near .columnloop test eax,eax jnz near .columnloop_last pop rsi pop rdi pop rax add rsi, byte SIZEOF_JSAMPROW ; input_data add rdi, byte SIZEOF_JSAMPROW ; output_data dec rcx ; rowctr jg near .rowloop .return: uncollect_args pop rbp ret ; -------------------------------------------------------------------------- ; ; Fancy processing for the common case of 2:1 horizontal and 2:1 vertical. ; Again a triangle filter; see comments for h2v1 case, above. ; ; GLOBAL(void) ; jsimd_h2v2_fancy_upsample_sse2 (int max_v_samp_factor, ; JDIMENSION downsampled_width, ; JSAMPARRAY input_data, ; JSAMPARRAY *output_data_ptr); ; ; r10 = int max_v_samp_factor ; r11 = JDIMENSION downsampled_width ; r12 = JSAMPARRAY input_data ; r13 = JSAMPARRAY *output_data_ptr %define wk(i) rbp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM] %define WK_NUM 4 align 16 global EXTN(jsimd_h2v2_fancy_upsample_sse2) EXTN(jsimd_h2v2_fancy_upsample_sse2): push rbp mov rax,rsp ; rax = original rbp sub rsp, byte 4 and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits mov [rsp],rax mov rbp,rsp ; rbp = aligned rbp lea rsp, [wk(0)] collect_args push rbx mov eax, r11d ; colctr test rax,rax jz near .return mov rcx, r10 ; rowctr test rcx,rcx jz near .return mov rsi, r12 ; input_data mov rdi, r13 mov rdi, JSAMPARRAY [rdi] ; output_data .rowloop: push rax ; colctr push rcx push rdi push rsi mov rcx, JSAMPROW [rsi-1*SIZEOF_JSAMPROW] ; inptr1(above) mov rbx, JSAMPROW [rsi+0*SIZEOF_JSAMPROW] ; inptr0 mov rsi, JSAMPROW [rsi+1*SIZEOF_JSAMPROW] ; inptr1(below) mov rdx, JSAMPROW [rdi+0*SIZEOF_JSAMPROW] ; outptr0 mov rdi, JSAMPROW [rdi+1*SIZEOF_JSAMPROW] ; outptr1 test rax, SIZEOF_XMMWORD-1 jz short .skip push rdx mov dl, JSAMPLE [rcx+(rax-1)*SIZEOF_JSAMPLE] mov JSAMPLE [rcx+rax*SIZEOF_JSAMPLE], dl mov dl, JSAMPLE [rbx+(rax-1)*SIZEOF_JSAMPLE] mov JSAMPLE [rbx+rax*SIZEOF_JSAMPLE], dl mov dl, JSAMPLE [rsi+(rax-1)*SIZEOF_JSAMPLE] mov JSAMPLE [rsi+rax*SIZEOF_JSAMPLE], dl ; insert a dummy sample pop rdx .skip: ; -- process the first column block movdqa xmm0, XMMWORD [rbx+0*SIZEOF_XMMWORD] ; xmm0=row[ 0][0] movdqa xmm1, XMMWORD [rcx+0*SIZEOF_XMMWORD] ; xmm1=row[-1][0] movdqa xmm2, XMMWORD [rsi+0*SIZEOF_XMMWORD] ; xmm2=row[+1][0] pxor xmm3,xmm3 ; xmm3=(all 0's) movdqa xmm4,xmm0 punpcklbw xmm0,xmm3 ; xmm0=row[ 0]( 0 1 2 3 4 5 6 7) punpckhbw xmm4,xmm3 ; xmm4=row[ 0]( 8 9 10 11 12 13 14 15) movdqa xmm5,xmm1 punpcklbw xmm1,xmm3 ; xmm1=row[-1]( 0 1 2 3 4 5 6 7) punpckhbw xmm5,xmm3 ; xmm5=row[-1]( 8 9 10 11 12 13 14 15) movdqa xmm6,xmm2 punpcklbw xmm2,xmm3 ; xmm2=row[+1]( 0 1 2 3 4 5 6 7) punpckhbw xmm6,xmm3 ; xmm6=row[+1]( 8 9 10 11 12 13 14 15) pmullw xmm0,[rel PW_THREE] pmullw xmm4,[rel PW_THREE] pcmpeqb xmm7,xmm7 psrldq xmm7,(SIZEOF_XMMWORD-2) paddw xmm1,xmm0 ; xmm1=Int0L=( 0 1 2 3 4 5 6 7) paddw xmm5,xmm4 ; xmm5=Int0H=( 8 9 10 11 12 13 14 15) paddw xmm2,xmm0 ; xmm2=Int1L=( 0 1 2 3 4 5 6 7) paddw xmm6,xmm4 ; xmm6=Int1H=( 8 9 10 11 12 13 14 15) movdqa XMMWORD [rdx+0*SIZEOF_XMMWORD], xmm1 ; temporarily save movdqa XMMWORD [rdx+1*SIZEOF_XMMWORD], xmm5 ; the intermediate data movdqa XMMWORD [rdi+0*SIZEOF_XMMWORD], xmm2 movdqa XMMWORD [rdi+1*SIZEOF_XMMWORD], xmm6 pand xmm1,xmm7 ; xmm1=( 0 -- -- -- -- -- -- --) pand xmm2,xmm7 ; xmm2=( 0 -- -- -- -- -- -- --) movdqa XMMWORD [wk(0)], xmm1 movdqa XMMWORD [wk(1)], xmm2 add rax, byte SIZEOF_XMMWORD-1 and rax, byte -SIZEOF_XMMWORD cmp rax, byte SIZEOF_XMMWORD ja short .columnloop .columnloop_last: ; -- process the last column block pcmpeqb xmm1,xmm1 pslldq xmm1,(SIZEOF_XMMWORD-2) movdqa xmm2,xmm1 pand xmm1, XMMWORD [rdx+1*SIZEOF_XMMWORD] pand xmm2, XMMWORD [rdi+1*SIZEOF_XMMWORD] movdqa XMMWORD [wk(2)], xmm1 ; xmm1=(-- -- -- -- -- -- -- 15) movdqa XMMWORD [wk(3)], xmm2 ; xmm2=(-- -- -- -- -- -- -- 15) jmp near .upsample .columnloop: ; -- process the next column block movdqa xmm0, XMMWORD [rbx+1*SIZEOF_XMMWORD] ; xmm0=row[ 0][1] movdqa xmm1, XMMWORD [rcx+1*SIZEOF_XMMWORD] ; xmm1=row[-1][1] movdqa xmm2, XMMWORD [rsi+1*SIZEOF_XMMWORD] ; xmm2=row[+1][1] pxor xmm3,xmm3 ; xmm3=(all 0's) movdqa xmm4,xmm0 punpcklbw xmm0,xmm3 ; xmm0=row[ 0]( 0 1 2 3 4 5 6 7) punpckhbw xmm4,xmm3 ; xmm4=row[ 0]( 8 9 10 11 12 13 14 15) movdqa xmm5,xmm1 punpcklbw xmm1,xmm3 ; xmm1=row[-1]( 0 1 2 3 4 5 6 7) punpckhbw xmm5,xmm3 ; xmm5=row[-1]( 8 9 10 11 12 13 14 15) movdqa xmm6,xmm2 punpcklbw xmm2,xmm3 ; xmm2=row[+1]( 0 1 2 3 4 5 6 7) punpckhbw xmm6,xmm3 ; xmm6=row[+1]( 8 9 10 11 12 13 14 15) pmullw xmm0,[rel PW_THREE] pmullw xmm4,[rel PW_THREE] paddw xmm1,xmm0 ; xmm1=Int0L=( 0 1 2 3 4 5 6 7) paddw xmm5,xmm4 ; xmm5=Int0H=( 8 9 10 11 12 13 14 15) paddw xmm2,xmm0 ; xmm2=Int1L=( 0 1 2 3 4 5 6 7) paddw xmm6,xmm4 ; xmm6=Int1H=( 8 9 10 11 12 13 14 15) movdqa XMMWORD [rdx+2*SIZEOF_XMMWORD], xmm1 ; temporarily save movdqa XMMWORD [rdx+3*SIZEOF_XMMWORD], xmm5 ; the intermediate data movdqa XMMWORD [rdi+2*SIZEOF_XMMWORD], xmm2 movdqa XMMWORD [rdi+3*SIZEOF_XMMWORD], xmm6 pslldq xmm1,(SIZEOF_XMMWORD-2) ; xmm1=(-- -- -- -- -- -- -- 0) pslldq xmm2,(SIZEOF_XMMWORD-2) ; xmm2=(-- -- -- -- -- -- -- 0) movdqa XMMWORD [wk(2)], xmm1 movdqa XMMWORD [wk(3)], xmm2 .upsample: ; -- process the upper row movdqa xmm7, XMMWORD [rdx+0*SIZEOF_XMMWORD] movdqa xmm3, XMMWORD [rdx+1*SIZEOF_XMMWORD] movdqa xmm0,xmm7 ; xmm7=Int0L=( 0 1 2 3 4 5 6 7) movdqa xmm4,xmm3 ; xmm3=Int0H=( 8 9 10 11 12 13 14 15) psrldq xmm0,2 ; xmm0=( 1 2 3 4 5 6 7 --) pslldq xmm4,(SIZEOF_XMMWORD-2) ; xmm4=(-- -- -- -- -- -- -- 8) movdqa xmm5,xmm7 movdqa xmm6,xmm3 psrldq xmm5,(SIZEOF_XMMWORD-2) ; xmm5=( 7 -- -- -- -- -- -- --) pslldq xmm6,2 ; xmm6=(-- 8 9 10 11 12 13 14) por xmm0,xmm4 ; xmm0=( 1 2 3 4 5 6 7 8) por xmm5,xmm6 ; xmm5=( 7 8 9 10 11 12 13 14) movdqa xmm1,xmm7 movdqa xmm2,xmm3 pslldq xmm1,2 ; xmm1=(-- 0 1 2 3 4 5 6) psrldq xmm2,2 ; xmm2=( 9 10 11 12 13 14 15 --) movdqa xmm4,xmm3 psrldq xmm4,(SIZEOF_XMMWORD-2) ; xmm4=(15 -- -- -- -- -- -- --) por xmm1, XMMWORD [wk(0)] ; xmm1=(-1 0 1 2 3 4 5 6) por xmm2, XMMWORD [wk(2)] ; xmm2=( 9 10 11 12 13 14 15 16) movdqa XMMWORD [wk(0)], xmm4 pmullw xmm7,[rel PW_THREE] pmullw xmm3,[rel PW_THREE] paddw xmm1,[rel PW_EIGHT] paddw xmm5,[rel PW_EIGHT] paddw xmm0,[rel PW_SEVEN] paddw xmm2,[rel PW_SEVEN] paddw xmm1,xmm7 paddw xmm5,xmm3 psrlw xmm1,4 ; xmm1=Out0LE=( 0 2 4 6 8 10 12 14) psrlw xmm5,4 ; xmm5=Out0HE=(16 18 20 22 24 26 28 30) paddw xmm0,xmm7 paddw xmm2,xmm3 psrlw xmm0,4 ; xmm0=Out0LO=( 1 3 5 7 9 11 13 15) psrlw xmm2,4 ; xmm2=Out0HO=(17 19 21 23 25 27 29 31) psllw xmm0,BYTE_BIT psllw xmm2,BYTE_BIT por xmm1,xmm0 ; xmm1=Out0L=( 0 1 2 ... 13 14 15) por xmm5,xmm2 ; xmm5=Out0H=(16 17 18 ... 29 30 31) movdqa XMMWORD [rdx+0*SIZEOF_XMMWORD], xmm1 movdqa XMMWORD [rdx+1*SIZEOF_XMMWORD], xmm5 ; -- process the lower row movdqa xmm6, XMMWORD [rdi+0*SIZEOF_XMMWORD] movdqa xmm4, XMMWORD [rdi+1*SIZEOF_XMMWORD] movdqa xmm7,xmm6 ; xmm6=Int1L=( 0 1 2 3 4 5 6 7) movdqa xmm3,xmm4 ; xmm4=Int1H=( 8 9 10 11 12 13 14 15) psrldq xmm7,2 ; xmm7=( 1 2 3 4 5 6 7 --) pslldq xmm3,(SIZEOF_XMMWORD-2) ; xmm3=(-- -- -- -- -- -- -- 8) movdqa xmm0,xmm6 movdqa xmm2,xmm4 psrldq xmm0,(SIZEOF_XMMWORD-2) ; xmm0=( 7 -- -- -- -- -- -- --) pslldq xmm2,2 ; xmm2=(-- 8 9 10 11 12 13 14) por xmm7,xmm3 ; xmm7=( 1 2 3 4 5 6 7 8) por xmm0,xmm2 ; xmm0=( 7 8 9 10 11 12 13 14) movdqa xmm1,xmm6 movdqa xmm5,xmm4 pslldq xmm1,2 ; xmm1=(-- 0 1 2 3 4 5 6) psrldq xmm5,2 ; xmm5=( 9 10 11 12 13 14 15 --) movdqa xmm3,xmm4 psrldq xmm3,(SIZEOF_XMMWORD-2) ; xmm3=(15 -- -- -- -- -- -- --) por xmm1, XMMWORD [wk(1)] ; xmm1=(-1 0 1 2 3 4 5 6) por xmm5, XMMWORD [wk(3)] ; xmm5=( 9 10 11 12 13 14 15 16) movdqa XMMWORD [wk(1)], xmm3 pmullw xmm6,[rel PW_THREE] pmullw xmm4,[rel PW_THREE] paddw xmm1,[rel PW_EIGHT] paddw xmm0,[rel PW_EIGHT] paddw xmm7,[rel PW_SEVEN] paddw xmm5,[rel PW_SEVEN] paddw xmm1,xmm6 paddw xmm0,xmm4 psrlw xmm1,4 ; xmm1=Out1LE=( 0 2 4 6 8 10 12 14) psrlw xmm0,4 ; xmm0=Out1HE=(16 18 20 22 24 26 28 30) paddw xmm7,xmm6 paddw xmm5,xmm4 psrlw xmm7,4 ; xmm7=Out1LO=( 1 3 5 7 9 11 13 15) psrlw xmm5,4 ; xmm5=Out1HO=(17 19 21 23 25 27 29 31) psllw xmm7,BYTE_BIT psllw xmm5,BYTE_BIT por xmm1,xmm7 ; xmm1=Out1L=( 0 1 2 ... 13 14 15) por xmm0,xmm5 ; xmm0=Out1H=(16 17 18 ... 29 30 31) movdqa XMMWORD [rdi+0*SIZEOF_XMMWORD], xmm1 movdqa XMMWORD [rdi+1*SIZEOF_XMMWORD], xmm0 sub rax, byte SIZEOF_XMMWORD add rcx, byte 1*SIZEOF_XMMWORD ; inptr1(above) add rbx, byte 1*SIZEOF_XMMWORD ; inptr0 add rsi, byte 1*SIZEOF_XMMWORD ; inptr1(below) add rdx, byte 2*SIZEOF_XMMWORD ; outptr0 add rdi, byte 2*SIZEOF_XMMWORD ; outptr1 cmp rax, byte SIZEOF_XMMWORD ja near .columnloop test rax,rax jnz near .columnloop_last pop rsi pop rdi pop rcx pop rax add rsi, byte 1*SIZEOF_JSAMPROW ; input_data add rdi, byte 2*SIZEOF_JSAMPROW ; output_data sub rcx, byte 2 ; rowctr jg near .rowloop .return: pop rbx uncollect_args mov rsp,rbp ; rsp <- aligned rbp pop rsp ; rsp <- original rbp pop rbp ret ; -------------------------------------------------------------------------- ; ; Fast processing for the common case of 2:1 horizontal and 1:1 vertical. ; It's still a box filter. ; ; GLOBAL(void) ; jsimd_h2v1_upsample_sse2 (int max_v_samp_factor, ; JDIMENSION output_width, ; JSAMPARRAY input_data, ; JSAMPARRAY *output_data_ptr); ; ; r10 = int max_v_samp_factor ; r11 = JDIMENSION output_width ; r12 = JSAMPARRAY input_data ; r13 = JSAMPARRAY *output_data_ptr align 16 global EXTN(jsimd_h2v1_upsample_sse2) EXTN(jsimd_h2v1_upsample_sse2): push rbp mov rax,rsp mov rbp,rsp collect_args mov edx, r11d add rdx, byte (2*SIZEOF_XMMWORD)-1 and rdx, byte -(2*SIZEOF_XMMWORD) jz near .return mov rcx, r10 ; rowctr test rcx,rcx jz short .return mov rsi, r12 ; input_data mov rdi, r13 mov rdi, JSAMPARRAY [rdi] ; output_data .rowloop: push rdi push rsi mov rsi, JSAMPROW [rsi] ; inptr mov rdi, JSAMPROW [rdi] ; outptr mov rax,rdx ; colctr .columnloop: movdqa xmm0, XMMWORD [rsi+0*SIZEOF_XMMWORD] movdqa xmm1,xmm0 punpcklbw xmm0,xmm0 punpckhbw xmm1,xmm1 movdqa XMMWORD [rdi+0*SIZEOF_XMMWORD], xmm0 movdqa XMMWORD [rdi+1*SIZEOF_XMMWORD], xmm1 sub rax, byte 2*SIZEOF_XMMWORD jz short .nextrow movdqa xmm2, XMMWORD [rsi+1*SIZEOF_XMMWORD] movdqa xmm3,xmm2 punpcklbw xmm2,xmm2 punpckhbw xmm3,xmm3 movdqa XMMWORD [rdi+2*SIZEOF_XMMWORD], xmm2 movdqa XMMWORD [rdi+3*SIZEOF_XMMWORD], xmm3 sub rax, byte 2*SIZEOF_XMMWORD jz short .nextrow add rsi, byte 2*SIZEOF_XMMWORD ; inptr add rdi, byte 4*SIZEOF_XMMWORD ; outptr jmp short .columnloop .nextrow: pop rsi pop rdi add rsi, byte SIZEOF_JSAMPROW ; input_data add rdi, byte SIZEOF_JSAMPROW ; output_data dec rcx ; rowctr jg short .rowloop .return: uncollect_args pop rbp ret ; -------------------------------------------------------------------------- ; ; Fast processing for the common case of 2:1 horizontal and 2:1 vertical. ; It's still a box filter. ; ; GLOBAL(void) ; jsimd_h2v2_upsample_sse2 (nt max_v_samp_factor, ; JDIMENSION output_width, ; JSAMPARRAY input_data, ; JSAMPARRAY *output_data_ptr); ; ; r10 = int max_v_samp_factor ; r11 = JDIMENSION output_width ; r12 = JSAMPARRAY input_data ; r13 = JSAMPARRAY *output_data_ptr align 16 global EXTN(jsimd_h2v2_upsample_sse2) EXTN(jsimd_h2v2_upsample_sse2): push rbp mov rax,rsp mov rbp,rsp collect_args push rbx mov edx, r11d add rdx, byte (2*SIZEOF_XMMWORD)-1 and rdx, byte -(2*SIZEOF_XMMWORD) jz near .return mov rcx, r10 ; rowctr test rcx,rcx jz near .return mov rsi, r12 ; input_data mov rdi, r13 mov rdi, JSAMPARRAY [rdi] ; output_data .rowloop: push rdi push rsi mov rsi, JSAMPROW [rsi] ; inptr mov rbx, JSAMPROW [rdi+0*SIZEOF_JSAMPROW] ; outptr0 mov rdi, JSAMPROW [rdi+1*SIZEOF_JSAMPROW] ; outptr1 mov rax,rdx ; colctr .columnloop: movdqa xmm0, XMMWORD [rsi+0*SIZEOF_XMMWORD] movdqa xmm1,xmm0 punpcklbw xmm0,xmm0 punpckhbw xmm1,xmm1 movdqa XMMWORD [rbx+0*SIZEOF_XMMWORD], xmm0 movdqa XMMWORD [rbx+1*SIZEOF_XMMWORD], xmm1 movdqa XMMWORD [rdi+0*SIZEOF_XMMWORD], xmm0 movdqa XMMWORD [rdi+1*SIZEOF_XMMWORD], xmm1 sub rax, byte 2*SIZEOF_XMMWORD jz short .nextrow movdqa xmm2, XMMWORD [rsi+1*SIZEOF_XMMWORD] movdqa xmm3,xmm2 punpcklbw xmm2,xmm2 punpckhbw xmm3,xmm3 movdqa XMMWORD [rbx+2*SIZEOF_XMMWORD], xmm2 movdqa XMMWORD [rbx+3*SIZEOF_XMMWORD], xmm3 movdqa XMMWORD [rdi+2*SIZEOF_XMMWORD], xmm2 movdqa XMMWORD [rdi+3*SIZEOF_XMMWORD], xmm3 sub rax, byte 2*SIZEOF_XMMWORD jz short .nextrow add rsi, byte 2*SIZEOF_XMMWORD ; inptr add rbx, byte 4*SIZEOF_XMMWORD ; outptr0 add rdi, byte 4*SIZEOF_XMMWORD ; outptr1 jmp short .columnloop .nextrow: pop rsi pop rdi add rsi, byte 1*SIZEOF_JSAMPROW ; input_data add rdi, byte 2*SIZEOF_JSAMPROW ; output_data sub rcx, byte 2 ; rowctr jg near .rowloop .return: pop rbx uncollect_args pop rbp ret ; For some reason, the OS X linker does not honor the request to align the ; segment unless we do this. align 16