diff options
Diffstat (limited to 'media/libjpeg/simd/x86_64/jquantf-sse2.asm')
| -rw-r--r-- | media/libjpeg/simd/x86_64/jquantf-sse2.asm | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/media/libjpeg/simd/x86_64/jquantf-sse2.asm b/media/libjpeg/simd/x86_64/jquantf-sse2.asm new file mode 100644 index 0000000000..ab2e3954f6 --- /dev/null +++ b/media/libjpeg/simd/x86_64/jquantf-sse2.asm @@ -0,0 +1,155 @@ +; +; jquantf.asm - sample data conversion and quantization (64-bit SSE & SSE2) +; +; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB +; Copyright (C) 2009, 2016, D. R. Commander. +; Copyright (C) 2018, Matthias Räncker. +; +; 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_float_sse2(JSAMPARRAY sample_data, JDIMENSION start_col, +; FAST_FLOAT *workspace); +; + +; r10 = JSAMPARRAY sample_data +; r11d = JDIMENSION start_col +; r12 = FAST_FLOAT *workspace + + align 32 + GLOBAL_FUNCTION(jsimd_convsamp_float_sse2) + +EXTN(jsimd_convsamp_float_sse2): + push rbp + mov rax, rsp + mov rbp, rsp + collect_args 3 + push rbx + + pcmpeqw xmm7, xmm7 + psllw xmm7, 7 + packsswb xmm7, xmm7 ; xmm7 = PB_CENTERJSAMPLE (0x808080..) + + mov rsi, r10 + mov eax, r11d + mov rdi, r12 + mov rcx, DCTSIZE/2 +.convloop: + mov rbxp, JSAMPROW [rsi+0*SIZEOF_JSAMPROW] ; (JSAMPLE *) + mov rdxp, JSAMPROW [rsi+1*SIZEOF_JSAMPROW] ; (JSAMPLE *) + + movq xmm0, XMM_MMWORD [rbx+rax*SIZEOF_JSAMPLE] + movq xmm1, XMM_MMWORD [rdx+rax*SIZEOF_JSAMPLE] + + psubb xmm0, xmm7 ; xmm0=(01234567) + psubb xmm1, xmm7 ; xmm1=(89ABCDEF) + + punpcklbw xmm0, xmm0 ; xmm0=(*0*1*2*3*4*5*6*7) + punpcklbw xmm1, xmm1 ; xmm1=(*8*9*A*B*C*D*E*F) + + punpcklwd xmm2, xmm0 ; xmm2=(***0***1***2***3) + punpckhwd xmm0, xmm0 ; xmm0=(***4***5***6***7) + punpcklwd xmm3, xmm1 ; xmm3=(***8***9***A***B) + punpckhwd xmm1, xmm1 ; xmm1=(***C***D***E***F) + + psrad xmm2, (DWORD_BIT-BYTE_BIT) ; xmm2=(0123) + psrad xmm0, (DWORD_BIT-BYTE_BIT) ; xmm0=(4567) + cvtdq2ps xmm2, xmm2 ; xmm2=(0123) + cvtdq2ps xmm0, xmm0 ; xmm0=(4567) + psrad xmm3, (DWORD_BIT-BYTE_BIT) ; xmm3=(89AB) + psrad xmm1, (DWORD_BIT-BYTE_BIT) ; xmm1=(CDEF) + cvtdq2ps xmm3, xmm3 ; xmm3=(89AB) + cvtdq2ps xmm1, xmm1 ; xmm1=(CDEF) + + movaps XMMWORD [XMMBLOCK(0,0,rdi,SIZEOF_FAST_FLOAT)], xmm2 + movaps XMMWORD [XMMBLOCK(0,1,rdi,SIZEOF_FAST_FLOAT)], xmm0 + movaps XMMWORD [XMMBLOCK(1,0,rdi,SIZEOF_FAST_FLOAT)], xmm3 + movaps XMMWORD [XMMBLOCK(1,1,rdi,SIZEOF_FAST_FLOAT)], xmm1 + + add rsi, byte 2*SIZEOF_JSAMPROW + add rdi, byte 2*DCTSIZE*SIZEOF_FAST_FLOAT + dec rcx + jnz short .convloop + + pop rbx + uncollect_args 3 + pop rbp + ret + +; -------------------------------------------------------------------------- +; +; Quantize/descale the coefficients, and store into coef_block +; +; GLOBAL(void) +; jsimd_quantize_float_sse2(JCOEFPTR coef_block, FAST_FLOAT *divisors, +; FAST_FLOAT *workspace); +; + +; r10 = JCOEFPTR coef_block +; r11 = FAST_FLOAT *divisors +; r12 = FAST_FLOAT *workspace + + align 32 + GLOBAL_FUNCTION(jsimd_quantize_float_sse2) + +EXTN(jsimd_quantize_float_sse2): + push rbp + mov rax, rsp + mov rbp, rsp + collect_args 3 + + mov rsi, r12 + mov rdx, r11 + mov rdi, r10 + mov rax, DCTSIZE2/16 +.quantloop: + movaps xmm0, XMMWORD [XMMBLOCK(0,0,rsi,SIZEOF_FAST_FLOAT)] + movaps xmm1, XMMWORD [XMMBLOCK(0,1,rsi,SIZEOF_FAST_FLOAT)] + mulps xmm0, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FAST_FLOAT)] + mulps xmm1, XMMWORD [XMMBLOCK(0,1,rdx,SIZEOF_FAST_FLOAT)] + movaps xmm2, XMMWORD [XMMBLOCK(1,0,rsi,SIZEOF_FAST_FLOAT)] + movaps xmm3, XMMWORD [XMMBLOCK(1,1,rsi,SIZEOF_FAST_FLOAT)] + mulps xmm2, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_FAST_FLOAT)] + mulps xmm3, XMMWORD [XMMBLOCK(1,1,rdx,SIZEOF_FAST_FLOAT)] + + cvtps2dq xmm0, xmm0 + cvtps2dq xmm1, xmm1 + cvtps2dq xmm2, xmm2 + cvtps2dq xmm3, xmm3 + + packssdw xmm0, xmm1 + packssdw xmm2, xmm3 + + movdqa XMMWORD [XMMBLOCK(0,0,rdi,SIZEOF_JCOEF)], xmm0 + movdqa XMMWORD [XMMBLOCK(1,0,rdi,SIZEOF_JCOEF)], xmm2 + + add rsi, byte 16*SIZEOF_FAST_FLOAT + add rdx, byte 16*SIZEOF_FAST_FLOAT + add rdi, byte 16*SIZEOF_JCOEF + dec rax + jnz short .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 |