diff options
Diffstat (limited to 'media/libjpeg/simd/x86_64/jquanti-sse2.asm')
| -rw-r--r-- | media/libjpeg/simd/x86_64/jquanti-sse2.asm | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/media/libjpeg/simd/x86_64/jquanti-sse2.asm b/media/libjpeg/simd/x86_64/jquanti-sse2.asm new file mode 100644 index 0000000000..bb6fa69ea3 --- /dev/null +++ b/media/libjpeg/simd/x86_64/jquanti-sse2.asm @@ -0,0 +1,187 @@ +; +; jquanti.asm - sample data conversion and quantization (64-bit SSE2) +; +; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB +; Copyright (C) 2009, 2016, 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 + +%include "jsimdext.inc" +%include "jdct.inc" + +; -------------------------------------------------------------------------- + SECTION SEG_TEXT + BITS 64 +; +; Load data into workspace, applying unsigned->signed conversion +; +; GLOBAL(void) +; jsimd_convsamp_sse2(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_sse2) + +EXTN(jsimd_convsamp_sse2): + push rbp + mov rax, rsp + mov rbp, rsp + collect_args 3 + push rbx + + pxor xmm6, xmm6 ; xmm6=(all 0's) + pcmpeqw xmm7, xmm7 + psllw xmm7, 7 ; xmm7={0xFF80 0xFF80 0xFF80 0xFF80 ..} + + mov rsi, r10 + mov eax, r11d + mov rdi, r12 + mov rcx, DCTSIZE/4 +.convloop: + mov rbx, JSAMPROW [rsi+0*SIZEOF_JSAMPROW] ; (JSAMPLE *) + mov rdx, JSAMPROW [rsi+1*SIZEOF_JSAMPROW] ; (JSAMPLE *) + + movq xmm0, XMM_MMWORD [rbx+rax*SIZEOF_JSAMPLE] ; xmm0=(01234567) + movq xmm1, XMM_MMWORD [rdx+rax*SIZEOF_JSAMPLE] ; xmm1=(89ABCDEF) + + mov rbx, JSAMPROW [rsi+2*SIZEOF_JSAMPROW] ; (JSAMPLE *) + mov rdx, JSAMPROW [rsi+3*SIZEOF_JSAMPROW] ; (JSAMPLE *) + + movq xmm2, XMM_MMWORD [rbx+rax*SIZEOF_JSAMPLE] ; xmm2=(GHIJKLMN) + movq xmm3, XMM_MMWORD [rdx+rax*SIZEOF_JSAMPLE] ; xmm3=(OPQRSTUV) + + punpcklbw xmm0, xmm6 ; xmm0=(01234567) + punpcklbw xmm1, xmm6 ; xmm1=(89ABCDEF) + paddw xmm0, xmm7 + paddw xmm1, xmm7 + punpcklbw xmm2, xmm6 ; xmm2=(GHIJKLMN) + punpcklbw xmm3, xmm6 ; xmm3=(OPQRSTUV) + paddw xmm2, xmm7 + paddw xmm3, xmm7 + + movdqa XMMWORD [XMMBLOCK(0,0,rdi,SIZEOF_DCTELEM)], xmm0 + movdqa XMMWORD [XMMBLOCK(1,0,rdi,SIZEOF_DCTELEM)], xmm1 + movdqa XMMWORD [XMMBLOCK(2,0,rdi,SIZEOF_DCTELEM)], xmm2 + movdqa XMMWORD [XMMBLOCK(3,0,rdi,SIZEOF_DCTELEM)], xmm3 + + add rsi, byte 4*SIZEOF_JSAMPROW + add rdi, byte 4*DCTSIZE*SIZEOF_DCTELEM + dec rcx + jnz short .convloop + + pop rbx + 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_sse2(JCOEFPTR coef_block, DCTELEM *divisors, +; DCTELEM *workspace); +; + +%define RECIPROCAL(m, n, b) \ + XMMBLOCK(DCTSIZE * 0 + (m), (n), (b), SIZEOF_DCTELEM) +%define CORRECTION(m, n, b) \ + XMMBLOCK(DCTSIZE * 1 + (m), (n), (b), SIZEOF_DCTELEM) +%define SCALE(m, n, b) \ + XMMBLOCK(DCTSIZE * 2 + (m), (n), (b), SIZEOF_DCTELEM) + +; r10 = JCOEFPTR coef_block +; r11 = DCTELEM *divisors +; r12 = DCTELEM *workspace + + align 32 + GLOBAL_FUNCTION(jsimd_quantize_sse2) + +EXTN(jsimd_quantize_sse2): + push rbp + mov rax, rsp + mov rbp, rsp + collect_args 3 + + mov rsi, r12 + mov rdx, r11 + mov rdi, r10 + mov rax, DCTSIZE2/32 +.quantloop: + movdqa xmm4, XMMWORD [XMMBLOCK(0,0,rsi,SIZEOF_DCTELEM)] + movdqa xmm5, XMMWORD [XMMBLOCK(1,0,rsi,SIZEOF_DCTELEM)] + movdqa xmm6, XMMWORD [XMMBLOCK(2,0,rsi,SIZEOF_DCTELEM)] + movdqa xmm7, XMMWORD [XMMBLOCK(3,0,rsi,SIZEOF_DCTELEM)] + movdqa xmm0, xmm4 + movdqa xmm1, xmm5 + movdqa xmm2, xmm6 + movdqa xmm3, xmm7 + psraw xmm4, (WORD_BIT-1) + psraw xmm5, (WORD_BIT-1) + psraw xmm6, (WORD_BIT-1) + psraw xmm7, (WORD_BIT-1) + pxor xmm0, xmm4 + pxor xmm1, xmm5 + pxor xmm2, xmm6 + pxor xmm3, xmm7 + psubw xmm0, xmm4 ; if (xmm0 < 0) xmm0 = -xmm0; + psubw xmm1, xmm5 ; if (xmm1 < 0) xmm1 = -xmm1; + psubw xmm2, xmm6 ; if (xmm2 < 0) xmm2 = -xmm2; + psubw xmm3, xmm7 ; if (xmm3 < 0) xmm3 = -xmm3; + + paddw xmm0, XMMWORD [CORRECTION(0,0,rdx)] ; correction + roundfactor + paddw xmm1, XMMWORD [CORRECTION(1,0,rdx)] + paddw xmm2, XMMWORD [CORRECTION(2,0,rdx)] + paddw xmm3, XMMWORD [CORRECTION(3,0,rdx)] + pmulhuw xmm0, XMMWORD [RECIPROCAL(0,0,rdx)] ; reciprocal + pmulhuw xmm1, XMMWORD [RECIPROCAL(1,0,rdx)] + pmulhuw xmm2, XMMWORD [RECIPROCAL(2,0,rdx)] + pmulhuw xmm3, XMMWORD [RECIPROCAL(3,0,rdx)] + pmulhuw xmm0, XMMWORD [SCALE(0,0,rdx)] ; scale + pmulhuw xmm1, XMMWORD [SCALE(1,0,rdx)] + pmulhuw xmm2, XMMWORD [SCALE(2,0,rdx)] + pmulhuw xmm3, XMMWORD [SCALE(3,0,rdx)] + + pxor xmm0, xmm4 + pxor xmm1, xmm5 + pxor xmm2, xmm6 + pxor xmm3, xmm7 + psubw xmm0, xmm4 + psubw xmm1, xmm5 + psubw xmm2, xmm6 + psubw xmm3, xmm7 + movdqa XMMWORD [XMMBLOCK(0,0,rdi,SIZEOF_DCTELEM)], xmm0 + movdqa XMMWORD [XMMBLOCK(1,0,rdi,SIZEOF_DCTELEM)], xmm1 + movdqa XMMWORD [XMMBLOCK(2,0,rdi,SIZEOF_DCTELEM)], xmm2 + movdqa XMMWORD [XMMBLOCK(3,0,rdi,SIZEOF_DCTELEM)], xmm3 + + add rsi, byte 32*SIZEOF_DCTELEM + add rdx, byte 32*SIZEOF_DCTELEM + add rdi, byte 32*SIZEOF_JCOEF + dec rax + jnz near .quantloop + + 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 |