kc3-lang/libjpeg-turbo/simd/i386/jdsample-avx2.asm
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Hash : 5e27ca23
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Date : 2025-09-19T14:21:49
x86: Reformat NASM code to improve readability (and simplify the checkstyle script)
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simd/i386/jdsample-avx2.asm
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; ; Upsampling (32-bit AVX2) ; ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB ; Copyright (C) 2015, Intel Corporation. ; Copyright (C) 2016, 2024-2025, 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) or Yasm. %include "jsimdext.inc" ; -------------------------------------------------------------------------- SECTION SEG_CONST ALIGNZ 32 GLOBAL_DATA(jconst_fancy_upsample_avx2) EXTN(jconst_fancy_upsample_avx2): PW_ONE times 16 dw 1 PW_TWO times 16 dw 2 PW_THREE times 16 dw 3 PW_SEVEN times 16 dw 7 PW_EIGHT times 16 dw 8 ALIGNZ 32 ; -------------------------------------------------------------------------- SECTION SEG_TEXT BITS 32 ; 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_avx2(int max_v_samp_factor, ; JDIMENSION downsampled_width, ; JSAMPARRAY input_data, ; JSAMPARRAY *output_data_ptr) %define max_v_samp(b) (b) + 8 ; int max_v_samp_factor %define downsamp_width(b) (b) + 12 ; JDIMENSION downsampled_width %define input_data(b) (b) + 16 ; JSAMPARRAY input_data %define output_data_ptr(b) (b) + 20 ; JSAMPARRAY *output_data_ptr align 32 GLOBAL_FUNCTION(jsimd_h2v1_fancy_upsample_avx2) EXTN(jsimd_h2v1_fancy_upsample_avx2): push ebp mov ebp, esp PUSHPIC ebx ; push ecx ; need not be preserved ; push edx ; need not be preserved push esi push edi GET_GOT ebx ; get GOT address mov eax, JDIMENSION [downsamp_width(ebp)] ; colctr test eax, eax jz near .return mov ecx, INT [max_v_samp(ebp)] ; rowctr test ecx, ecx jz near .return mov esi, JSAMPARRAY [input_data(ebp)] ; input_data mov edi, POINTER [output_data_ptr(ebp)] mov edi, JSAMPARRAY [edi] ; output_data ALIGNX 16, 7 .rowloop: push eax ; colctr push edi push esi mov esi, JSAMPROW [esi] ; inptr mov edi, JSAMPROW [edi] ; outptr test eax, SIZEOF_YMMWORD - 1 jz short .skip mov dl, JSAMPLE [esi + (eax - 1) * SIZEOF_JSAMPLE] mov JSAMPLE [esi + eax * SIZEOF_JSAMPLE], dl ; insert a dummy sample .skip: vpxor ymm0, ymm0, ymm0 ; ymm0 = (all 0's) vpcmpeqb xmm7, xmm7, xmm7 vpsrldq xmm7, xmm7, (SIZEOF_XMMWORD - 1) ; (ff -- -- -- ... -- --) LSB is ff vpand ymm7, ymm7, YMMWORD [esi + 0 * SIZEOF_YMMWORD] add eax, byte SIZEOF_YMMWORD - 1 and eax, byte -SIZEOF_YMMWORD cmp eax, byte SIZEOF_YMMWORD ja short .columnloop ALIGNX 16, 7 .columnloop_last: vpcmpeqb xmm6, xmm6, xmm6 vpslldq xmm6, xmm6, (SIZEOF_XMMWORD - 1) vperm2i128 ymm6, ymm6, ymm6, 1 ; (---- ---- ... ---- ---- ff) MSB is ff vpand ymm6, ymm6, YMMWORD [esi + 0 * SIZEOF_YMMWORD] jmp short .upsample ALIGNX 16, 7 .columnloop: vmovdqu ymm6, YMMWORD [esi + 1 * SIZEOF_YMMWORD] vperm2i128 ymm6, ymm0, ymm6, 0x20 vpslldq ymm6, ymm6, 15 .upsample: vmovdqu ymm1, YMMWORD [esi + 0 * SIZEOF_YMMWORD] ; ymm1 = ( 0 1 2 ... 29 30 31) vperm2i128 ymm2, ymm0, ymm1, 0x20 vpalignr ymm2, ymm1, ymm2, 15 ; ymm2 = (-- 0 1 ... 28 29 30) vperm2i128 ymm4, ymm0, ymm1, 0x03 vpalignr ymm3, ymm4, ymm1, 1 ; ymm3 = ( 1 2 3 ... 30 31 --) vpor ymm2, ymm2, ymm7 ; ymm2 = (-1 0 1 ... 28 29 30) vpor ymm3, ymm3, ymm6 ; ymm3 = ( 1 2 3 ... 30 31 32) vpsrldq ymm7, ymm4, (SIZEOF_XMMWORD - 1) ; ymm7 = (31 -- -- ... -- -- --) vpunpckhbw ymm4, ymm1, ymm0 ; ymm4 = ( 8 9 10 11 12 13 14 15 24 25 26 27 28 29 30 31) vpunpcklbw ymm5, ymm1, ymm0 ; ymm5 = ( 0 1 2 3 4 5 6 7 16 17 18 19 20 21 22 23) vperm2i128 ymm1, ymm5, ymm4, 0x20 ; ymm1 = ( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15) vperm2i128 ymm4, ymm5, ymm4, 0x31 ; ymm4 = (16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31) vpunpckhbw ymm5, ymm2, ymm0 ; ymm5 = ( 7 8 9 10 11 12 13 14 23 24 25 26 27 28 29 30) vpunpcklbw ymm6, ymm2, ymm0 ; ymm6 = (-1 0 1 2 3 4 5 6 15 16 17 18 19 20 21 22) vperm2i128 ymm2, ymm6, ymm5, 0x20 ; ymm2 = (-1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14) vperm2i128 ymm5, ymm6, ymm5, 0x31 ; ymm5 = (15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30) vpunpckhbw ymm6, ymm3, ymm0 ; ymm6 = ( 1 2 3 4 5 6 7 8 17 18 19 20 21 22 23 24) vpunpcklbw ymm0, ymm3, ymm0 ; ymm0 = ( 9 10 11 12 13 14 15 16 25 26 27 28 29 30 31 32) vperm2i128 ymm3, ymm0, ymm6, 0x20 ; ymm3 = ( 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16) vperm2i128 ymm6, ymm0, ymm6, 0x31 ; ymm6 = (17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32) vpxor ymm0, ymm0, ymm0 ; ymm0 = (all 0's) vpmullw ymm1, ymm1, [GOTOFF(ebx, PW_THREE)] vpmullw ymm4, ymm4, [GOTOFF(ebx, PW_THREE)] vpaddw ymm2, ymm2, [GOTOFF(ebx, PW_ONE)] vpaddw ymm5, ymm5, [GOTOFF(ebx, PW_ONE)] vpaddw ymm3, ymm3, [GOTOFF(ebx, PW_TWO)] vpaddw ymm6, ymm6, [GOTOFF(ebx, PW_TWO)] vpaddw ymm2, ymm2, ymm1 vpaddw ymm5, ymm5, ymm4 vpsrlw ymm2, ymm2, 2 ; ymm2 = OutLE = ( 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30) vpsrlw ymm5, ymm5, 2 ; ymm5 = OutHE = (32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62) vpaddw ymm3, ymm3, ymm1 vpaddw ymm6, ymm6, ymm4 vpsrlw ymm3, ymm3, 2 ; ymm3 = OutLO = ( 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31) vpsrlw ymm6, ymm6, 2 ; ymm6 = OutHO = (33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63) vpsllw ymm3, ymm3, BYTE_BIT vpsllw ymm6, ymm6, BYTE_BIT vpor ymm2, ymm2, ymm3 ; ymm2 = OutL = ( 0 1 2 ... 29 30 31) vpor ymm5, ymm5, ymm6 ; ymm5 = OutH = (32 33 34 ... 61 62 63) vmovdqu YMMWORD [edi + 0 * SIZEOF_YMMWORD], ymm2 vmovdqu YMMWORD [edi + 1 * SIZEOF_YMMWORD], ymm5 sub eax, byte SIZEOF_YMMWORD add esi, byte 1 * SIZEOF_YMMWORD ; inptr add edi, byte 2 * SIZEOF_YMMWORD ; outptr cmp eax, byte SIZEOF_YMMWORD ja near .columnloop test eax, eax jnz near .columnloop_last pop esi pop edi pop eax add esi, byte SIZEOF_JSAMPROW ; input_data add edi, byte SIZEOF_JSAMPROW ; output_data dec ecx ; rowctr jg near .rowloop .return: vzeroupper pop edi pop esi ; pop edx ; need not be preserved ; pop ecx ; need not be preserved POPPIC ebx pop ebp 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_avx2(int max_v_samp_factor, ; JDIMENSION downsampled_width, ; JSAMPARRAY input_data, ; JSAMPARRAY *output_data_ptr) %define max_v_samp(b) (b) + 8 ; int max_v_samp_factor %define downsamp_width(b) (b) + 12 ; JDIMENSION downsampled_width %define input_data(b) (b) + 16 ; JSAMPARRAY input_data %define output_data_ptr(b) (b) + 20 ; JSAMPARRAY *output_data_ptr %define original_ebp ebp + 0 %define wk(i) ebp - (WK_NUM - (i)) * SIZEOF_YMMWORD ; ymmword wk[WK_NUM] %define WK_NUM 4 %define gotptr wk(0) - SIZEOF_POINTER ; void *gotptr align 32 GLOBAL_FUNCTION(jsimd_h2v2_fancy_upsample_avx2) EXTN(jsimd_h2v2_fancy_upsample_avx2): push ebp mov eax, esp ; eax = original ebp sub esp, byte 4 and esp, byte (-SIZEOF_YMMWORD) ; align to 256 bits mov [esp], eax mov ebp, esp ; ebp = aligned ebp lea esp, [wk(0)] PUSHPIC eax ; make a room for GOT address push ebx ; push ecx ; need not be preserved ; push edx ; need not be preserved push esi push edi GET_GOT ebx ; get GOT address MOVPIC POINTER [gotptr], ebx ; save GOT address mov edx, eax ; edx = original ebp mov eax, JDIMENSION [downsamp_width(edx)] ; colctr test eax, eax jz near .return mov ecx, INT [max_v_samp(edx)] ; rowctr test ecx, ecx jz near .return mov esi, JSAMPARRAY [input_data(edx)] ; input_data mov edi, POINTER [output_data_ptr(edx)] mov edi, JSAMPARRAY [edi] ; output_data ALIGNX 16, 7 .rowloop: push eax ; colctr push ecx push edi push esi mov ecx, JSAMPROW [esi - 1 * SIZEOF_JSAMPROW] ; inptr1(above) mov ebx, JSAMPROW [esi + 0 * SIZEOF_JSAMPROW] ; inptr0 mov esi, JSAMPROW [esi + 1 * SIZEOF_JSAMPROW] ; inptr1(below) mov edx, JSAMPROW [edi + 0 * SIZEOF_JSAMPROW] ; outptr0 mov edi, JSAMPROW [edi + 1 * SIZEOF_JSAMPROW] ; outptr1 test eax, SIZEOF_YMMWORD - 1 jz short .skip push edx mov dl, JSAMPLE [ecx + (eax - 1) * SIZEOF_JSAMPLE] mov JSAMPLE [ecx + eax * SIZEOF_JSAMPLE], dl mov dl, JSAMPLE [ebx + (eax - 1) * SIZEOF_JSAMPLE] mov JSAMPLE [ebx + eax * SIZEOF_JSAMPLE], dl mov dl, JSAMPLE [esi + (eax - 1) * SIZEOF_JSAMPLE] mov JSAMPLE [esi + eax * SIZEOF_JSAMPLE], dl ; insert a dummy sample pop edx .skip: ; -- process the first column block vmovdqu ymm0, YMMWORD [ebx + 0 * SIZEOF_YMMWORD] ; ymm0 = row[ 0][0] vmovdqu ymm1, YMMWORD [ecx + 0 * SIZEOF_YMMWORD] ; ymm1 = row[-1][0] vmovdqu ymm2, YMMWORD [esi + 0 * SIZEOF_YMMWORD] ; ymm2 = row[+1][0] PUSHPIC ebx MOVPIC ebx, POINTER [gotptr] ; load GOT address vpxor ymm3, ymm3, ymm3 ; ymm3 = (all 0's) vpunpckhbw ymm4, ymm0, ymm3 ; ymm4 = row[ 0]( 8 9 10 11 12 13 14 15 24 25 26 27 28 29 30 31) vpunpcklbw ymm5, ymm0, ymm3 ; ymm5 = row[ 0]( 0 1 2 3 4 5 6 7 16 17 18 19 20 21 22 23) vperm2i128 ymm0, ymm5, ymm4, 0x20 ; ymm0 = row[ 0]( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15) vperm2i128 ymm4, ymm5, ymm4, 0x31 ; ymm4 = row[ 0](16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31) vpunpckhbw ymm5, ymm1, ymm3 ; ymm5 = row[-1]( 8 9 10 11 12 13 14 15 24 25 26 27 28 29 30 31) vpunpcklbw ymm6, ymm1, ymm3 ; ymm6 = row[-1]( 0 1 2 3 4 5 6 7 16 17 18 19 20 21 22 23) vperm2i128 ymm1, ymm6, ymm5, 0x20 ; ymm1 = row[-1]( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15) vperm2i128 ymm5, ymm6, ymm5, 0x31 ; ymm5 = row[-1](16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31) vpunpckhbw ymm6, ymm2, ymm3 ; ymm6 = row[+1]( 8 9 10 11 12 13 14 15 24 25 26 27 28 29 30 31) vpunpcklbw ymm3, ymm2, ymm3 ; ymm3 = row[+1]( 0 1 2 3 4 5 6 7 16 17 18 19 20 21 22 23) vperm2i128 ymm2, ymm3, ymm6, 0x20 ; ymm2 = row[+1]( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15) vperm2i128 ymm6, ymm3, ymm6, 0x31 ; ymm6 = row[+1](16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31) vpmullw ymm0, ymm0, [GOTOFF(ebx, PW_THREE)] vpmullw ymm4, ymm4, [GOTOFF(ebx, PW_THREE)] vpcmpeqb xmm7, xmm7, xmm7 vpsrldq xmm7, xmm7, (SIZEOF_XMMWORD - 2) ; (ffff ---- ---- ... ---- ----) LSB is ffff vpaddw ymm1, ymm1, ymm0 ; ymm1 = Int0L = ( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15) vpaddw ymm5, ymm5, ymm4 ; ymm5 = Int0H = (16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31) vpaddw ymm2, ymm2, ymm0 ; ymm2 = Int1L = ( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15) vpaddw ymm6, ymm6, ymm4 ; ymm6 = Int1H = (16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31) ; temporarily save the intermediate data vmovdqu YMMWORD [edx + 0 * SIZEOF_YMMWORD], ymm1 vmovdqu YMMWORD [edx + 1 * SIZEOF_YMMWORD], ymm5 vmovdqu YMMWORD [edi + 0 * SIZEOF_YMMWORD], ymm2 vmovdqu YMMWORD [edi + 1 * SIZEOF_YMMWORD], ymm6 vpand ymm1, ymm1, ymm7 ; ymm1 = ( 0 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --) vpand ymm2, ymm2, ymm7 ; ymm2 = ( 0 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --) vmovdqa YMMWORD [wk(0)], ymm1 vmovdqa YMMWORD [wk(1)], ymm2 POPPIC ebx add eax, byte SIZEOF_YMMWORD - 1 and eax, byte -SIZEOF_YMMWORD cmp eax, byte SIZEOF_YMMWORD ja short .columnloop ALIGNX 16, 7 .columnloop_last: ; -- process the last column block PUSHPIC ebx MOVPIC ebx, POINTER [gotptr] ; load GOT address vpcmpeqb xmm1, xmm1, xmm1 vpslldq xmm1, xmm1, (SIZEOF_XMMWORD - 2) vperm2i128 ymm1, ymm1, ymm1, 1 ; (---- ---- ... ---- ---- ffff) MSB is ffff vpand ymm2, ymm1, YMMWORD [edi + 1 * SIZEOF_YMMWORD] vpand ymm1, ymm1, YMMWORD [edx + 1 * SIZEOF_YMMWORD] vmovdqa YMMWORD [wk(2)], ymm1 ; ymm1 = (-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 31) vmovdqa YMMWORD [wk(3)], ymm2 ; ymm2 = (-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 31) jmp near .upsample ALIGNX 16, 7 .columnloop: ; -- process the next column block vmovdqu ymm0, YMMWORD [ebx + 1 * SIZEOF_YMMWORD] ; ymm0 = row[ 0][1] vmovdqu ymm1, YMMWORD [ecx + 1 * SIZEOF_YMMWORD] ; ymm1 = row[-1][1] vmovdqu ymm2, YMMWORD [esi + 1 * SIZEOF_YMMWORD] ; ymm2 = row[+1][1] PUSHPIC ebx MOVPIC ebx, POINTER [gotptr] ; load GOT address vpxor ymm3, ymm3, ymm3 ; ymm3 = (all 0's) vpunpckhbw ymm4, ymm0, ymm3 ; ymm4 = row[ 0]( 8 9 10 11 12 13 14 15 24 25 26 27 28 29 30 31) vpunpcklbw ymm5, ymm0, ymm3 ; ymm5 = row[ 0]( 0 1 2 3 4 5 6 7 16 17 18 19 20 21 22 23) vperm2i128 ymm0, ymm5, ymm4, 0x20 ; ymm0 = row[ 0]( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15) vperm2i128 ymm4, ymm5, ymm4, 0x31 ; ymm4 = row[ 0](16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31) vpunpckhbw ymm5, ymm1, ymm3 ; ymm5 = row[-1]( 8 9 10 11 12 13 14 15 24 25 26 27 28 29 30 31) vpunpcklbw ymm6, ymm1, ymm3 ; ymm6 = row[-1]( 0 1 2 3 4 5 6 7 16 17 18 19 20 21 22 23) vperm2i128 ymm1, ymm6, ymm5, 0x20 ; ymm1 = row[-1]( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15) vperm2i128 ymm5, ymm6, ymm5, 0x31 ; ymm5 = row[-1](16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31) vpunpckhbw ymm6, ymm2, ymm3 ; ymm6 = row[+1]( 8 9 10 11 12 13 14 15 24 25 26 27 28 29 30 31) vpunpcklbw ymm7, ymm2, ymm3 ; ymm7 = row[+1]( 0 1 2 3 4 5 6 7 16 17 18 19 20 21 22 23) vperm2i128 ymm2, ymm7, ymm6, 0x20 ; ymm2 = row[+1]( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15) vperm2i128 ymm6, ymm7, ymm6, 0x31 ; ymm6 = row[+1](16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31) vpmullw ymm0, ymm0, [GOTOFF(ebx, PW_THREE)] vpmullw ymm4, ymm4, [GOTOFF(ebx, PW_THREE)] vpaddw ymm1, ymm1, ymm0 ; ymm1 = Int0L = ( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15) vpaddw ymm5, ymm5, ymm4 ; ymm5 = Int0H = (16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31) vpaddw ymm2, ymm2, ymm0 ; ymm2 = Int1L = ( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15) vpaddw ymm6, ymm6, ymm4 ; ymm6 = Int1H = (16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31) ; temporarily save the intermediate data vmovdqu YMMWORD [edx + 2 * SIZEOF_YMMWORD], ymm1 vmovdqu YMMWORD [edx + 3 * SIZEOF_YMMWORD], ymm5 vmovdqu YMMWORD [edi + 2 * SIZEOF_YMMWORD], ymm2 vmovdqu YMMWORD [edi + 3 * SIZEOF_YMMWORD], ymm6 vperm2i128 ymm1, ymm3, ymm1, 0x20 vpslldq ymm1, ymm1, 14 ; ymm1 = (-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 0) vperm2i128 ymm2, ymm3, ymm2, 0x20 vpslldq ymm2, ymm2, 14 ; ymm2 = (-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 0) vmovdqa YMMWORD [wk(2)], ymm1 vmovdqa YMMWORD [wk(3)], ymm2 .upsample: ; -- process the upper row vmovdqu ymm7, YMMWORD [edx + 0 * SIZEOF_YMMWORD] ; ymm7 = Int0L = ( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15) vmovdqu ymm3, YMMWORD [edx + 1 * SIZEOF_YMMWORD] ; ymm3 = Int0H = (16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31) vpxor ymm1, ymm1, ymm1 ; ymm1 = (all 0's) vperm2i128 ymm0, ymm1, ymm7, 0x03 vpalignr ymm0, ymm0, ymm7, 2 ; ymm0 = ( 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 --) vperm2i128 ymm4, ymm1, ymm3, 0x20 vpslldq ymm4, ymm4, 14 ; ymm4 = (-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 16) vperm2i128 ymm5, ymm1, ymm7, 0x03 vpsrldq ymm5, ymm5, 14 ; ymm5 = (15 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --) vperm2i128 ymm6, ymm1, ymm3, 0x20 vpalignr ymm6, ymm3, ymm6, 14 ; ymm6 = (-- 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30) vpor ymm0, ymm0, ymm4 ; ymm0 = ( 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16) vpor ymm5, ymm5, ymm6 ; ymm5 = (15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30) vperm2i128 ymm2, ymm1, ymm3, 0x03 vpalignr ymm2, ymm2, ymm3, 2 ; ymm2 = (17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 --) vperm2i128 ymm4, ymm1, ymm3, 0x03 vpsrldq ymm4, ymm4, 14 ; ymm4 = (31 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --) vperm2i128 ymm1, ymm1, ymm7, 0x20 vpalignr ymm1, ymm7, ymm1, 14 ; ymm1 = (-- 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14) vpor ymm1, ymm1, YMMWORD [wk(0)] ; ymm1 = (-1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14) vpor ymm2, ymm2, YMMWORD [wk(2)] ; ymm2 = (17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32) vmovdqa YMMWORD [wk(0)], ymm4 vpmullw ymm7, ymm7, [GOTOFF(ebx, PW_THREE)] vpmullw ymm3, ymm3, [GOTOFF(ebx, PW_THREE)] vpaddw ymm1, ymm1, [GOTOFF(ebx, PW_EIGHT)] vpaddw ymm5, ymm5, [GOTOFF(ebx, PW_EIGHT)] vpaddw ymm0, ymm0, [GOTOFF(ebx, PW_SEVEN)] vpaddw ymm2, [GOTOFF(ebx, PW_SEVEN)] vpaddw ymm1, ymm1, ymm7 vpaddw ymm5, ymm5, ymm3 vpsrlw ymm1, ymm1, 4 ; ymm1 = Out0LE = ( 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30) vpsrlw ymm5, ymm5, 4 ; ymm5 = Out0HE = (32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62) vpaddw ymm0, ymm0, ymm7 vpaddw ymm2, ymm2, ymm3 vpsrlw ymm0, ymm0, 4 ; ymm0 = Out0LO = ( 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31) vpsrlw ymm2, ymm2, 4 ; ymm2 = Out0HO = (33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63) vpsllw ymm0, ymm0, BYTE_BIT vpsllw ymm2, ymm2, BYTE_BIT vpor ymm1, ymm1, ymm0 ; ymm1 = Out0L = ( 0 1 2 ... 29 30 31) vpor ymm5, ymm5, ymm2 ; ymm5 = Out0H = (32 33 34 ... 61 62 63) vmovdqu YMMWORD [edx + 0 * SIZEOF_YMMWORD], ymm1 vmovdqu YMMWORD [edx + 1 * SIZEOF_YMMWORD], ymm5 ; -- process the lower row vmovdqu ymm6, YMMWORD [edi + 0 * SIZEOF_YMMWORD] ; ymm6 = Int1L = ( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15) vmovdqu ymm4, YMMWORD [edi + 1 * SIZEOF_YMMWORD] ; ymm4 = Int1H = (16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31) vpxor ymm1, ymm1, ymm1 ; ymm1 = (all 0's) vperm2i128 ymm7, ymm1, ymm6, 0x03 vpalignr ymm7, ymm7, ymm6, 2 ; ymm7 = ( 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 --) vperm2i128 ymm3, ymm1, ymm4, 0x20 vpslldq ymm3, ymm3, 14 ; ymm3 = (-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 16) vperm2i128 ymm0, ymm1, ymm6, 0x03 vpsrldq ymm0, ymm0, 14 ; ymm0 = (15 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --) vperm2i128 ymm2, ymm1, ymm4, 0x20 vpalignr ymm2, ymm4, ymm2, 14 ; ymm2 = (-- 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30) vpor ymm7, ymm7, ymm3 ; ymm7 = ( 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16) vpor ymm0, ymm0, ymm2 ; ymm0 = (15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30) vperm2i128 ymm5, ymm1, ymm4, 0x03 vpalignr ymm5, ymm5, ymm4, 2 ; ymm5 = (17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 --) vperm2i128 ymm3, ymm1, ymm4, 0x03 vpsrldq ymm3, ymm3, 14 ; ymm3 = (31 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --) vperm2i128 ymm1, ymm1, ymm6, 0x20 vpalignr ymm1, ymm6, ymm1, 14 ; ymm1 = (-- 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14) vpor ymm1, ymm1, YMMWORD [wk(1)] ; ymm1 = (-1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14) vpor ymm5, ymm5, YMMWORD [wk(3)] ; ymm5 = (17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32) vmovdqa YMMWORD [wk(1)], ymm3 vpmullw ymm6, ymm6, [GOTOFF(ebx, PW_THREE)] vpmullw ymm4, ymm4, [GOTOFF(ebx, PW_THREE)] vpaddw ymm1, ymm1, [GOTOFF(ebx, PW_EIGHT)] vpaddw ymm0, ymm0, [GOTOFF(ebx, PW_EIGHT)] vpaddw ymm7, ymm7, [GOTOFF(ebx, PW_SEVEN)] vpaddw ymm5, ymm5, [GOTOFF(ebx, PW_SEVEN)] vpaddw ymm1, ymm1, ymm6 vpaddw ymm0, ymm0, ymm4 vpsrlw ymm1, ymm1, 4 ; ymm1 = Out1LE = ( 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30) vpsrlw ymm0, ymm0, 4 ; ymm0 = Out1HE = (32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62) vpaddw ymm7, ymm7, ymm6 vpaddw ymm5, ymm5, ymm4 vpsrlw ymm7, ymm7, 4 ; ymm7 = Out1LO = ( 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31) vpsrlw ymm5, ymm5, 4 ; ymm5 = Out1HO = (33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63) vpsllw ymm7, ymm7, BYTE_BIT vpsllw ymm5, ymm5, BYTE_BIT vpor ymm1, ymm1, ymm7 ; ymm1 = Out1L = ( 0 1 2 ... 29 30 31) vpor ymm0, ymm0, ymm5 ; ymm0 = Out1H = (32 33 34 ... 61 62 63) vmovdqu YMMWORD [edi + 0 * SIZEOF_YMMWORD], ymm1 vmovdqu YMMWORD [edi + 1 * SIZEOF_YMMWORD], ymm0 POPPIC ebx sub eax, byte SIZEOF_YMMWORD add ecx, byte 1 * SIZEOF_YMMWORD ; inptr1(above) add ebx, byte 1 * SIZEOF_YMMWORD ; inptr0 add esi, byte 1 * SIZEOF_YMMWORD ; inptr1(below) add edx, byte 2 * SIZEOF_YMMWORD ; outptr0 add edi, byte 2 * SIZEOF_YMMWORD ; outptr1 cmp eax, byte SIZEOF_YMMWORD ja near .columnloop test eax, eax jnz near .columnloop_last pop esi pop edi pop ecx pop eax add esi, byte 1 * SIZEOF_JSAMPROW ; input_data add edi, byte 2 * SIZEOF_JSAMPROW ; output_data sub ecx, byte 2 ; rowctr jg near .rowloop .return: vzeroupper pop edi pop esi ; pop edx ; need not be preserved ; pop ecx ; need not be preserved pop ebx mov esp, ebp ; esp <- aligned ebp pop esp ; esp <- original ebp pop ebp 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_avx2(int max_v_samp_factor, JDIMENSION output_width, ; JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr) %define max_v_samp(b) (b) + 8 ; int max_v_samp_factor %define output_width(b) (b) + 12 ; JDIMENSION output_width %define input_data(b) (b) + 16 ; JSAMPARRAY input_data %define output_data_ptr(b) (b) + 20 ; JSAMPARRAY *output_data_ptr align 32 GLOBAL_FUNCTION(jsimd_h2v1_upsample_avx2) EXTN(jsimd_h2v1_upsample_avx2): push ebp mov ebp, esp ; push ebx ; unused ; push ecx ; need not be preserved ; push edx ; need not be preserved push esi push edi mov edx, JDIMENSION [output_width(ebp)] add edx, byte (SIZEOF_YMMWORD - 1) and edx, -SIZEOF_YMMWORD jz short .return mov ecx, INT [max_v_samp(ebp)] ; rowctr test ecx, ecx jz short .return mov esi, JSAMPARRAY [input_data(ebp)] ; input_data mov edi, POINTER [output_data_ptr(ebp)] mov edi, JSAMPARRAY [edi] ; output_data ALIGNX 16, 7 .rowloop: push edi push esi mov esi, JSAMPROW [esi] ; inptr mov edi, JSAMPROW [edi] ; outptr mov eax, edx ; colctr ALIGNX 16, 7 .columnloop: cmp eax, byte SIZEOF_YMMWORD ja near .above_16 vmovdqu xmm0, XMMWORD [esi + 0 * SIZEOF_YMMWORD] vpunpckhbw xmm1, xmm0, xmm0 vpunpcklbw xmm0, xmm0, xmm0 vmovdqu XMMWORD [edi + 0 * SIZEOF_XMMWORD], xmm0 vmovdqu XMMWORD [edi + 1 * SIZEOF_XMMWORD], xmm1 jmp short .nextrow .above_16: vmovdqu ymm0, YMMWORD [esi + 0 * SIZEOF_YMMWORD] vpermq ymm0, ymm0, 0xd8 vpunpckhbw ymm1, ymm0, ymm0 vpunpcklbw ymm0, ymm0, ymm0 vmovdqu YMMWORD [edi + 0 * SIZEOF_YMMWORD], ymm0 vmovdqu YMMWORD [edi + 1 * SIZEOF_YMMWORD], ymm1 sub eax, byte 2 * SIZEOF_YMMWORD jz short .nextrow add esi, byte SIZEOF_YMMWORD ; inptr add edi, byte 2 * SIZEOF_YMMWORD ; outptr jmp short .columnloop ALIGNX 16, 7 .nextrow: pop esi pop edi add esi, byte SIZEOF_JSAMPROW ; input_data add edi, byte SIZEOF_JSAMPROW ; output_data dec ecx ; rowctr jg short .rowloop .return: vzeroupper pop edi pop esi ; pop edx ; need not be preserved ; pop ecx ; need not be preserved ; pop ebx ; unused pop ebp 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_avx2(int max_v_samp_factor, JDIMENSION output_width, ; JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr) %define max_v_samp(b) (b) + 8 ; int max_v_samp_factor %define output_width(b) (b) + 12 ; JDIMENSION output_width %define input_data(b) (b) + 16 ; JSAMPARRAY input_data %define output_data_ptr(b) (b) + 20 ; JSAMPARRAY *output_data_ptr align 32 GLOBAL_FUNCTION(jsimd_h2v2_upsample_avx2) EXTN(jsimd_h2v2_upsample_avx2): push ebp mov ebp, esp push ebx ; push ecx ; need not be preserved ; push edx ; need not be preserved push esi push edi mov edx, JDIMENSION [output_width(ebp)] add edx, byte (SIZEOF_YMMWORD - 1) and edx, -SIZEOF_YMMWORD jz near .return mov ecx, INT [max_v_samp(ebp)] ; rowctr test ecx, ecx jz near .return mov esi, JSAMPARRAY [input_data(ebp)] ; input_data mov edi, POINTER [output_data_ptr(ebp)] mov edi, JSAMPARRAY [edi] ; output_data ALIGNX 16, 7 .rowloop: push edi push esi mov esi, JSAMPROW [esi] ; inptr mov ebx, JSAMPROW [edi + 0 * SIZEOF_JSAMPROW] ; outptr0 mov edi, JSAMPROW [edi + 1 * SIZEOF_JSAMPROW] ; outptr1 mov eax, edx ; colctr ALIGNX 16, 7 .columnloop: cmp eax, byte SIZEOF_YMMWORD ja short .above_16 vmovdqu xmm0, XMMWORD [esi + 0 * SIZEOF_XMMWORD] vpunpckhbw xmm1, xmm0, xmm0 vpunpcklbw xmm0, xmm0, xmm0 vmovdqu XMMWORD [ebx + 0 * SIZEOF_XMMWORD], xmm0 vmovdqu XMMWORD [ebx + 1 * SIZEOF_XMMWORD], xmm1 vmovdqu XMMWORD [edi + 0 * SIZEOF_XMMWORD], xmm0 vmovdqu XMMWORD [edi + 1 * SIZEOF_XMMWORD], xmm1 jmp near .nextrow .above_16: vmovdqu ymm0, YMMWORD [esi + 0 * SIZEOF_YMMWORD] vpermq ymm0, ymm0, 0xd8 vpunpckhbw ymm1, ymm0, ymm0 vpunpcklbw ymm0, ymm0, ymm0 vmovdqu YMMWORD [ebx + 0 * SIZEOF_YMMWORD], ymm0 vmovdqu YMMWORD [ebx + 1 * SIZEOF_YMMWORD], ymm1 vmovdqu YMMWORD [edi + 0 * SIZEOF_YMMWORD], ymm0 vmovdqu YMMWORD [edi + 1 * SIZEOF_YMMWORD], ymm1 sub eax, byte 2 * SIZEOF_YMMWORD jz short .nextrow add esi, byte SIZEOF_YMMWORD ; inptr add ebx, 2 * SIZEOF_YMMWORD ; outptr0 add edi, 2 * SIZEOF_YMMWORD ; outptr1 jmp short .columnloop ALIGNX 16, 7 .nextrow: pop esi pop edi add esi, byte 1 * SIZEOF_JSAMPROW ; input_data add edi, byte 2 * SIZEOF_JSAMPROW ; output_data sub ecx, byte 2 ; rowctr jg near .rowloop .return: vzeroupper pop edi pop esi ; pop edx ; need not be preserved ; pop ecx ; need not be preserved pop ebx pop ebp ret ; For some reason, the OS X linker does not honor the request to align the ; segment unless we do this. align 32