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Diffstat (limited to 'tags/1.2.1/simd/jcqntsse.asm')
| -rw-r--r-- | tags/1.2.1/simd/jcqntsse.asm | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/tags/1.2.1/simd/jcqntsse.asm b/tags/1.2.1/simd/jcqntsse.asm new file mode 100644 index 0000000..3065eca --- /dev/null +++ b/tags/1.2.1/simd/jcqntsse.asm @@ -0,0 +1,211 @@ +; +; jcqntsse.asm - sample data conversion and quantization (SSE & MMX) +; +; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB +; +; Based on +; 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" +%include "jdct.inc" + +; -------------------------------------------------------------------------- + SECTION SEG_TEXT + BITS 32 +; +; Load data into workspace, applying unsigned->signed conversion +; +; GLOBAL(void) +; jsimd_convsamp_float_sse (JSAMPARRAY sample_data, JDIMENSION start_col, +; FAST_FLOAT * workspace); +; + +%define sample_data ebp+8 ; JSAMPARRAY sample_data +%define start_col ebp+12 ; JDIMENSION start_col +%define workspace ebp+16 ; FAST_FLOAT * workspace + + align 16 + global EXTN(jsimd_convsamp_float_sse) + +EXTN(jsimd_convsamp_float_sse): + push ebp + mov ebp,esp + push ebx +; push ecx ; need not be preserved +; push edx ; need not be preserved + push esi + push edi + + pcmpeqw mm7,mm7 + psllw mm7,7 + packsswb mm7,mm7 ; mm7 = PB_CENTERJSAMPLE (0x808080..) + + mov esi, JSAMPARRAY [sample_data] ; (JSAMPROW *) + mov eax, JDIMENSION [start_col] + mov edi, POINTER [workspace] ; (DCTELEM *) + mov ecx, DCTSIZE/2 + alignx 16,7 +.convloop: + mov ebx, JSAMPROW [esi+0*SIZEOF_JSAMPROW] ; (JSAMPLE *) + mov edx, JSAMPROW [esi+1*SIZEOF_JSAMPROW] ; (JSAMPLE *) + + movq mm0, MMWORD [ebx+eax*SIZEOF_JSAMPLE] + movq mm1, MMWORD [edx+eax*SIZEOF_JSAMPLE] + + psubb mm0,mm7 ; mm0=(01234567) + psubb mm1,mm7 ; mm1=(89ABCDEF) + + punpcklbw mm2,mm0 ; mm2=(*0*1*2*3) + punpckhbw mm0,mm0 ; mm0=(*4*5*6*7) + punpcklbw mm3,mm1 ; mm3=(*8*9*A*B) + punpckhbw mm1,mm1 ; mm1=(*C*D*E*F) + + punpcklwd mm4,mm2 ; mm4=(***0***1) + punpckhwd mm2,mm2 ; mm2=(***2***3) + punpcklwd mm5,mm0 ; mm5=(***4***5) + punpckhwd mm0,mm0 ; mm0=(***6***7) + + psrad mm4,(DWORD_BIT-BYTE_BIT) ; mm4=(01) + psrad mm2,(DWORD_BIT-BYTE_BIT) ; mm2=(23) + cvtpi2ps xmm0,mm4 ; xmm0=(01**) + cvtpi2ps xmm1,mm2 ; xmm1=(23**) + psrad mm5,(DWORD_BIT-BYTE_BIT) ; mm5=(45) + psrad mm0,(DWORD_BIT-BYTE_BIT) ; mm0=(67) + cvtpi2ps xmm2,mm5 ; xmm2=(45**) + cvtpi2ps xmm3,mm0 ; xmm3=(67**) + + punpcklwd mm6,mm3 ; mm6=(***8***9) + punpckhwd mm3,mm3 ; mm3=(***A***B) + punpcklwd mm4,mm1 ; mm4=(***C***D) + punpckhwd mm1,mm1 ; mm1=(***E***F) + + psrad mm6,(DWORD_BIT-BYTE_BIT) ; mm6=(89) + psrad mm3,(DWORD_BIT-BYTE_BIT) ; mm3=(AB) + cvtpi2ps xmm4,mm6 ; xmm4=(89**) + cvtpi2ps xmm5,mm3 ; xmm5=(AB**) + psrad mm4,(DWORD_BIT-BYTE_BIT) ; mm4=(CD) + psrad mm1,(DWORD_BIT-BYTE_BIT) ; mm1=(EF) + cvtpi2ps xmm6,mm4 ; xmm6=(CD**) + cvtpi2ps xmm7,mm1 ; xmm7=(EF**) + + movlhps xmm0,xmm1 ; xmm0=(0123) + movlhps xmm2,xmm3 ; xmm2=(4567) + movlhps xmm4,xmm5 ; xmm4=(89AB) + movlhps xmm6,xmm7 ; xmm6=(CDEF) + + movaps XMMWORD [XMMBLOCK(0,0,edi,SIZEOF_FAST_FLOAT)], xmm0 + movaps XMMWORD [XMMBLOCK(0,1,edi,SIZEOF_FAST_FLOAT)], xmm2 + movaps XMMWORD [XMMBLOCK(1,0,edi,SIZEOF_FAST_FLOAT)], xmm4 + movaps XMMWORD [XMMBLOCK(1,1,edi,SIZEOF_FAST_FLOAT)], xmm6 + + add esi, byte 2*SIZEOF_JSAMPROW + add edi, byte 2*DCTSIZE*SIZEOF_FAST_FLOAT + dec ecx + jnz near .convloop + + emms ; empty MMX state + + pop edi + pop esi +; pop edx ; need not be preserved +; pop ecx ; need not be preserved + pop ebx + pop ebp + ret + + +; -------------------------------------------------------------------------- +; +; Quantize/descale the coefficients, and store into coef_block +; +; GLOBAL(void) +; jsimd_quantize_float_sse (JCOEFPTR coef_block, FAST_FLOAT * divisors, +; FAST_FLOAT * workspace); +; + +%define coef_block ebp+8 ; JCOEFPTR coef_block +%define divisors ebp+12 ; FAST_FLOAT * divisors +%define workspace ebp+16 ; FAST_FLOAT * workspace + + align 16 + global EXTN(jsimd_quantize_float_sse) + +EXTN(jsimd_quantize_float_sse): + push ebp + mov ebp,esp +; push ebx ; unused +; push ecx ; unused +; push edx ; need not be preserved + push esi + push edi + + mov esi, POINTER [workspace] + mov edx, POINTER [divisors] + mov edi, JCOEFPTR [coef_block] + mov eax, DCTSIZE2/16 + alignx 16,7 +.quantloop: + movaps xmm0, XMMWORD [XMMBLOCK(0,0,esi,SIZEOF_FAST_FLOAT)] + movaps xmm1, XMMWORD [XMMBLOCK(0,1,esi,SIZEOF_FAST_FLOAT)] + mulps xmm0, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_FAST_FLOAT)] + mulps xmm1, XMMWORD [XMMBLOCK(0,1,edx,SIZEOF_FAST_FLOAT)] + movaps xmm2, XMMWORD [XMMBLOCK(1,0,esi,SIZEOF_FAST_FLOAT)] + movaps xmm3, XMMWORD [XMMBLOCK(1,1,esi,SIZEOF_FAST_FLOAT)] + mulps xmm2, XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_FAST_FLOAT)] + mulps xmm3, XMMWORD [XMMBLOCK(1,1,edx,SIZEOF_FAST_FLOAT)] + + movhlps xmm4,xmm0 + movhlps xmm5,xmm1 + + cvtps2pi mm0,xmm0 + cvtps2pi mm1,xmm1 + cvtps2pi mm4,xmm4 + cvtps2pi mm5,xmm5 + + movhlps xmm6,xmm2 + movhlps xmm7,xmm3 + + cvtps2pi mm2,xmm2 + cvtps2pi mm3,xmm3 + cvtps2pi mm6,xmm6 + cvtps2pi mm7,xmm7 + + packssdw mm0,mm4 + packssdw mm1,mm5 + packssdw mm2,mm6 + packssdw mm3,mm7 + + movq MMWORD [MMBLOCK(0,0,edi,SIZEOF_JCOEF)], mm0 + movq MMWORD [MMBLOCK(0,1,edi,SIZEOF_JCOEF)], mm1 + movq MMWORD [MMBLOCK(1,0,edi,SIZEOF_JCOEF)], mm2 + movq MMWORD [MMBLOCK(1,1,edi,SIZEOF_JCOEF)], mm3 + + add esi, byte 16*SIZEOF_FAST_FLOAT + add edx, byte 16*SIZEOF_FAST_FLOAT + add edi, byte 16*SIZEOF_JCOEF + dec eax + jnz short .quantloop + + emms ; empty MMX state + + pop edi + pop esi +; pop edx ; need not be preserved +; pop ecx ; unused +; pop ebx ; unused + pop ebp + ret + +; For some reason, the OS X linker does not honor the request to align the +; segment unless we do this. + align 16 |