| ; |
| ; jquanti.asm - sample data conversion and quantization (64-bit AVX2) |
| ; |
| ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB |
| ; Copyright (C) 2009, 2016, 2018, D. R. Commander. |
| ; Copyright (C) 2016, Matthieu Darbois. |
| ; Copyright (C) 2018, Matthias Rรคncker. |
| ; |
| ; 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 |
| |
| %include "jsimdext.inc" |
| %include "jdct.inc" |
| |
| ; -------------------------------------------------------------------------- |
| SECTION SEG_TEXT |
| BITS 64 |
| ; |
| ; Load data into workspace, applying unsigned->signed conversion |
| ; |
| ; GLOBAL(void) |
| ; jsimd_convsamp_avx2(JSAMPARRAY sample_data, JDIMENSION start_col, |
| ; DCTELEM *workspace); |
| ; |
| |
| ; r10 = JSAMPARRAY sample_data |
| ; r11d = JDIMENSION start_col |
| ; r12 = DCTELEM *workspace |
| |
| align 32 |
| GLOBAL_FUNCTION(jsimd_convsamp_avx2) |
| |
| EXTN(jsimd_convsamp_avx2): |
| push rbp |
| mov rax, rsp |
| mov rbp, rsp |
| collect_args 3 |
| |
| mov eax, r11d |
| |
| mov rsip, JSAMPROW [r10+0*SIZEOF_JSAMPROW] ; (JSAMPLE *) |
| mov rdip, JSAMPROW [r10+1*SIZEOF_JSAMPROW] ; (JSAMPLE *) |
| movq xmm0, XMM_MMWORD [rsi+rax*SIZEOF_JSAMPLE] |
| pinsrq xmm0, XMM_MMWORD [rdi+rax*SIZEOF_JSAMPLE], 1 |
| |
| mov rsip, JSAMPROW [r10+2*SIZEOF_JSAMPROW] ; (JSAMPLE *) |
| mov rdip, JSAMPROW [r10+3*SIZEOF_JSAMPROW] ; (JSAMPLE *) |
| movq xmm1, XMM_MMWORD [rsi+rax*SIZEOF_JSAMPLE] |
| pinsrq xmm1, XMM_MMWORD [rdi+rax*SIZEOF_JSAMPLE], 1 |
| |
| mov rsip, JSAMPROW [r10+4*SIZEOF_JSAMPROW] ; (JSAMPLE *) |
| mov rdip, JSAMPROW [r10+5*SIZEOF_JSAMPROW] ; (JSAMPLE *) |
| movq xmm2, XMM_MMWORD [rsi+rax*SIZEOF_JSAMPLE] |
| pinsrq xmm2, XMM_MMWORD [rdi+rax*SIZEOF_JSAMPLE], 1 |
| |
| mov rsip, JSAMPROW [r10+6*SIZEOF_JSAMPROW] ; (JSAMPLE *) |
| mov rdip, JSAMPROW [r10+7*SIZEOF_JSAMPROW] ; (JSAMPLE *) |
| movq xmm3, XMM_MMWORD [rsi+rax*SIZEOF_JSAMPLE] |
| pinsrq xmm3, XMM_MMWORD [rdi+rax*SIZEOF_JSAMPLE], 1 |
| |
| vpmovzxbw ymm0, xmm0 ; ymm0=(00 01 02 03 04 05 06 07 10 11 12 13 14 15 16 17) |
| vpmovzxbw ymm1, xmm1 ; ymm1=(20 21 22 23 24 25 26 27 30 31 32 33 34 35 36 37) |
| vpmovzxbw ymm2, xmm2 ; ymm2=(40 41 42 43 44 45 46 47 50 51 52 53 54 55 56 57) |
| vpmovzxbw ymm3, xmm3 ; ymm3=(60 61 62 63 64 65 66 67 70 71 72 73 74 75 76 77) |
| |
| vpcmpeqw ymm7, ymm7, ymm7 |
| vpsllw ymm7, ymm7, 7 ; ymm7={0xFF80 0xFF80 0xFF80 0xFF80 ..} |
| |
| vpaddw ymm0, ymm0, ymm7 |
| vpaddw ymm1, ymm1, ymm7 |
| vpaddw ymm2, ymm2, ymm7 |
| vpaddw ymm3, ymm3, ymm7 |
| |
| vmovdqu YMMWORD [YMMBLOCK(0,0,r12,SIZEOF_DCTELEM)], ymm0 |
| vmovdqu YMMWORD [YMMBLOCK(2,0,r12,SIZEOF_DCTELEM)], ymm1 |
| vmovdqu YMMWORD [YMMBLOCK(4,0,r12,SIZEOF_DCTELEM)], ymm2 |
| vmovdqu YMMWORD [YMMBLOCK(6,0,r12,SIZEOF_DCTELEM)], ymm3 |
| |
| vzeroupper |
| uncollect_args 3 |
| pop rbp |
| ret |
| |
| ; -------------------------------------------------------------------------- |
| ; |
| ; Quantize/descale the coefficients, and store into coef_block |
| ; |
| ; This implementation is based on an algorithm described in |
| ; "How to optimize for the Pentium family of microprocessors" |
| ; (http://www.agner.org/assem/). |
| ; |
| ; GLOBAL(void) |
| ; jsimd_quantize_avx2(JCOEFPTR coef_block, DCTELEM *divisors, |
| ; DCTELEM *workspace); |
| ; |
| |
| %define RECIPROCAL(m, n, b) \ |
| YMMBLOCK(DCTSIZE * 0 + (m), (n), (b), SIZEOF_DCTELEM) |
| %define CORRECTION(m, n, b) \ |
| YMMBLOCK(DCTSIZE * 1 + (m), (n), (b), SIZEOF_DCTELEM) |
| %define SCALE(m, n, b) \ |
| YMMBLOCK(DCTSIZE * 2 + (m), (n), (b), SIZEOF_DCTELEM) |
| |
| ; r10 = JCOEFPTR coef_block |
| ; r11 = DCTELEM *divisors |
| ; r12 = DCTELEM *workspace |
| |
| align 32 |
| GLOBAL_FUNCTION(jsimd_quantize_avx2) |
| |
| EXTN(jsimd_quantize_avx2): |
| push rbp |
| mov rax, rsp |
| mov rbp, rsp |
| collect_args 3 |
| |
| vmovdqu ymm4, [YMMBLOCK(0,0,r12,SIZEOF_DCTELEM)] |
| vmovdqu ymm5, [YMMBLOCK(2,0,r12,SIZEOF_DCTELEM)] |
| vmovdqu ymm6, [YMMBLOCK(4,0,r12,SIZEOF_DCTELEM)] |
| vmovdqu ymm7, [YMMBLOCK(6,0,r12,SIZEOF_DCTELEM)] |
| vpabsw ymm0, ymm4 |
| vpabsw ymm1, ymm5 |
| vpabsw ymm2, ymm6 |
| vpabsw ymm3, ymm7 |
| |
| vpaddw ymm0, YMMWORD [CORRECTION(0,0,r11)] ; correction + roundfactor |
| vpaddw ymm1, YMMWORD [CORRECTION(2,0,r11)] |
| vpaddw ymm2, YMMWORD [CORRECTION(4,0,r11)] |
| vpaddw ymm3, YMMWORD [CORRECTION(6,0,r11)] |
| vpmulhuw ymm0, YMMWORD [RECIPROCAL(0,0,r11)] ; reciprocal |
| vpmulhuw ymm1, YMMWORD [RECIPROCAL(2,0,r11)] |
| vpmulhuw ymm2, YMMWORD [RECIPROCAL(4,0,r11)] |
| vpmulhuw ymm3, YMMWORD [RECIPROCAL(6,0,r11)] |
| vpmulhuw ymm0, YMMWORD [SCALE(0,0,r11)] ; scale |
| vpmulhuw ymm1, YMMWORD [SCALE(2,0,r11)] |
| vpmulhuw ymm2, YMMWORD [SCALE(4,0,r11)] |
| vpmulhuw ymm3, YMMWORD [SCALE(6,0,r11)] |
| |
| vpsignw ymm0, ymm0, ymm4 |
| vpsignw ymm1, ymm1, ymm5 |
| vpsignw ymm2, ymm2, ymm6 |
| vpsignw ymm3, ymm3, ymm7 |
| |
| vmovdqu [YMMBLOCK(0,0,r10,SIZEOF_DCTELEM)], ymm0 |
| vmovdqu [YMMBLOCK(2,0,r10,SIZEOF_DCTELEM)], ymm1 |
| vmovdqu [YMMBLOCK(4,0,r10,SIZEOF_DCTELEM)], ymm2 |
| vmovdqu [YMMBLOCK(6,0,r10,SIZEOF_DCTELEM)], ymm3 |
| |
| vzeroupper |
| uncollect_args 3 |
| pop rbp |
| ret |
| |
| ; For some reason, the OS X linker does not honor the request to align the |
| ; segment unless we do this. |
| align 32 |