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Diffstat (limited to 'media/libjpeg/simd/jidctflt-sse.asm')
| -rw-r--r-- | media/libjpeg/simd/jidctflt-sse.asm | 571 |
1 files changed, 571 insertions, 0 deletions
diff --git a/media/libjpeg/simd/jidctflt-sse.asm b/media/libjpeg/simd/jidctflt-sse.asm new file mode 100644 index 000000000..4d4af2fff --- /dev/null +++ b/media/libjpeg/simd/jidctflt-sse.asm @@ -0,0 +1,571 @@ +; +; jidctflt.asm - floating-point IDCT (SSE & MMX) +; +; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB +; +; 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 +; +; This file contains a floating-point implementation of the inverse DCT +; (Discrete Cosine Transform). The following code is based directly on +; the IJG's original jidctflt.c; see the jidctflt.c for more details. +; +; [TAB8] + +%include "jsimdext.inc" +%include "jdct.inc" + +; -------------------------------------------------------------------------- + +%macro unpcklps2 2 ; %1=(0 1 2 3) / %2=(4 5 6 7) => %1=(0 1 4 5) + shufps %1,%2,0x44 +%endmacro + +%macro unpckhps2 2 ; %1=(0 1 2 3) / %2=(4 5 6 7) => %1=(2 3 6 7) + shufps %1,%2,0xEE +%endmacro + +; -------------------------------------------------------------------------- + SECTION SEG_CONST + + alignz 16 + global EXTN(jconst_idct_float_sse) + +EXTN(jconst_idct_float_sse): + +PD_1_414 times 4 dd 1.414213562373095048801689 +PD_1_847 times 4 dd 1.847759065022573512256366 +PD_1_082 times 4 dd 1.082392200292393968799446 +PD_M2_613 times 4 dd -2.613125929752753055713286 +PD_0_125 times 4 dd 0.125 ; 1/8 +PB_CENTERJSAMP times 8 db CENTERJSAMPLE + + alignz 16 + +; -------------------------------------------------------------------------- + SECTION SEG_TEXT + BITS 32 +; +; Perform dequantization and inverse DCT on one block of coefficients. +; +; GLOBAL(void) +; jsimd_idct_float_sse (void *dct_table, JCOEFPTR coef_block, +; JSAMPARRAY output_buf, JDIMENSION output_col) +; + +%define dct_table(b) (b)+8 ; void *dct_table +%define coef_block(b) (b)+12 ; JCOEFPTR coef_block +%define output_buf(b) (b)+16 ; JSAMPARRAY output_buf +%define output_col(b) (b)+20 ; JDIMENSION output_col + +%define original_ebp ebp+0 +%define wk(i) ebp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM] +%define WK_NUM 2 +%define workspace wk(0)-DCTSIZE2*SIZEOF_FAST_FLOAT + ; FAST_FLOAT workspace[DCTSIZE2] + + align 16 + global EXTN(jsimd_idct_float_sse) + +EXTN(jsimd_idct_float_sse): + push ebp + mov eax,esp ; eax = original ebp + sub esp, byte 4 + and esp, byte (-SIZEOF_XMMWORD) ; align to 128 bits + mov [esp],eax + mov ebp,esp ; ebp = aligned ebp + lea esp, [workspace] + push ebx +; push ecx ; need not be preserved +; push edx ; need not be preserved + push esi + push edi + + get_GOT ebx ; get GOT address + + ; ---- Pass 1: process columns from input, store into work array. + +; mov eax, [original_ebp] + mov edx, POINTER [dct_table(eax)] ; quantptr + mov esi, JCOEFPTR [coef_block(eax)] ; inptr + lea edi, [workspace] ; FAST_FLOAT *wsptr + mov ecx, DCTSIZE/4 ; ctr + alignx 16,7 +.columnloop: +%ifndef NO_ZERO_COLUMN_TEST_FLOAT_SSE + mov eax, DWORD [DWBLOCK(1,0,esi,SIZEOF_JCOEF)] + or eax, DWORD [DWBLOCK(2,0,esi,SIZEOF_JCOEF)] + jnz near .columnDCT + + movq mm0, MMWORD [MMBLOCK(1,0,esi,SIZEOF_JCOEF)] + movq mm1, MMWORD [MMBLOCK(2,0,esi,SIZEOF_JCOEF)] + por mm0, MMWORD [MMBLOCK(3,0,esi,SIZEOF_JCOEF)] + por mm1, MMWORD [MMBLOCK(4,0,esi,SIZEOF_JCOEF)] + por mm0, MMWORD [MMBLOCK(5,0,esi,SIZEOF_JCOEF)] + por mm1, MMWORD [MMBLOCK(6,0,esi,SIZEOF_JCOEF)] + por mm0, MMWORD [MMBLOCK(7,0,esi,SIZEOF_JCOEF)] + por mm1,mm0 + packsswb mm1,mm1 + movd eax,mm1 + test eax,eax + jnz short .columnDCT + + ; -- AC terms all zero + + movq mm0, MMWORD [MMBLOCK(0,0,esi,SIZEOF_JCOEF)] + + punpckhwd mm1,mm0 ; mm1=(** 02 ** 03) + punpcklwd mm0,mm0 ; mm0=(00 00 01 01) + psrad mm1,(DWORD_BIT-WORD_BIT) ; mm1=in0H=(02 03) + psrad mm0,(DWORD_BIT-WORD_BIT) ; mm0=in0L=(00 01) + cvtpi2ps xmm3,mm1 ; xmm3=(02 03 ** **) + cvtpi2ps xmm0,mm0 ; xmm0=(00 01 ** **) + movlhps xmm0,xmm3 ; xmm0=in0=(00 01 02 03) + + mulps xmm0, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_FLOAT_MULT_TYPE)] + + movaps xmm1,xmm0 + movaps xmm2,xmm0 + movaps xmm3,xmm0 + + shufps xmm0,xmm0,0x00 ; xmm0=(00 00 00 00) + shufps xmm1,xmm1,0x55 ; xmm1=(01 01 01 01) + shufps xmm2,xmm2,0xAA ; xmm2=(02 02 02 02) + shufps xmm3,xmm3,0xFF ; xmm3=(03 03 03 03) + + movaps XMMWORD [XMMBLOCK(0,0,edi,SIZEOF_FAST_FLOAT)], xmm0 + movaps XMMWORD [XMMBLOCK(0,1,edi,SIZEOF_FAST_FLOAT)], xmm0 + movaps XMMWORD [XMMBLOCK(1,0,edi,SIZEOF_FAST_FLOAT)], xmm1 + movaps XMMWORD [XMMBLOCK(1,1,edi,SIZEOF_FAST_FLOAT)], xmm1 + movaps XMMWORD [XMMBLOCK(2,0,edi,SIZEOF_FAST_FLOAT)], xmm2 + movaps XMMWORD [XMMBLOCK(2,1,edi,SIZEOF_FAST_FLOAT)], xmm2 + movaps XMMWORD [XMMBLOCK(3,0,edi,SIZEOF_FAST_FLOAT)], xmm3 + movaps XMMWORD [XMMBLOCK(3,1,edi,SIZEOF_FAST_FLOAT)], xmm3 + jmp near .nextcolumn + alignx 16,7 +%endif +.columnDCT: + + ; -- Even part + + movq mm0, MMWORD [MMBLOCK(0,0,esi,SIZEOF_JCOEF)] + movq mm1, MMWORD [MMBLOCK(2,0,esi,SIZEOF_JCOEF)] + movq mm2, MMWORD [MMBLOCK(4,0,esi,SIZEOF_JCOEF)] + movq mm3, MMWORD [MMBLOCK(6,0,esi,SIZEOF_JCOEF)] + + punpckhwd mm4,mm0 ; mm4=(** 02 ** 03) + punpcklwd mm0,mm0 ; mm0=(00 00 01 01) + punpckhwd mm5,mm1 ; mm5=(** 22 ** 23) + punpcklwd mm1,mm1 ; mm1=(20 20 21 21) + + psrad mm4,(DWORD_BIT-WORD_BIT) ; mm4=in0H=(02 03) + psrad mm0,(DWORD_BIT-WORD_BIT) ; mm0=in0L=(00 01) + cvtpi2ps xmm4,mm4 ; xmm4=(02 03 ** **) + cvtpi2ps xmm0,mm0 ; xmm0=(00 01 ** **) + psrad mm5,(DWORD_BIT-WORD_BIT) ; mm5=in2H=(22 23) + psrad mm1,(DWORD_BIT-WORD_BIT) ; mm1=in2L=(20 21) + cvtpi2ps xmm5,mm5 ; xmm5=(22 23 ** **) + cvtpi2ps xmm1,mm1 ; xmm1=(20 21 ** **) + + punpckhwd mm6,mm2 ; mm6=(** 42 ** 43) + punpcklwd mm2,mm2 ; mm2=(40 40 41 41) + punpckhwd mm7,mm3 ; mm7=(** 62 ** 63) + punpcklwd mm3,mm3 ; mm3=(60 60 61 61) + + psrad mm6,(DWORD_BIT-WORD_BIT) ; mm6=in4H=(42 43) + psrad mm2,(DWORD_BIT-WORD_BIT) ; mm2=in4L=(40 41) + cvtpi2ps xmm6,mm6 ; xmm6=(42 43 ** **) + cvtpi2ps xmm2,mm2 ; xmm2=(40 41 ** **) + psrad mm7,(DWORD_BIT-WORD_BIT) ; mm7=in6H=(62 63) + psrad mm3,(DWORD_BIT-WORD_BIT) ; mm3=in6L=(60 61) + cvtpi2ps xmm7,mm7 ; xmm7=(62 63 ** **) + cvtpi2ps xmm3,mm3 ; xmm3=(60 61 ** **) + + movlhps xmm0,xmm4 ; xmm0=in0=(00 01 02 03) + movlhps xmm1,xmm5 ; xmm1=in2=(20 21 22 23) + mulps xmm0, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_FLOAT_MULT_TYPE)] + mulps xmm1, XMMWORD [XMMBLOCK(2,0,edx,SIZEOF_FLOAT_MULT_TYPE)] + + movlhps xmm2,xmm6 ; xmm2=in4=(40 41 42 43) + movlhps xmm3,xmm7 ; xmm3=in6=(60 61 62 63) + mulps xmm2, XMMWORD [XMMBLOCK(4,0,edx,SIZEOF_FLOAT_MULT_TYPE)] + mulps xmm3, XMMWORD [XMMBLOCK(6,0,edx,SIZEOF_FLOAT_MULT_TYPE)] + + movaps xmm4,xmm0 + movaps xmm5,xmm1 + subps xmm0,xmm2 ; xmm0=tmp11 + subps xmm1,xmm3 + addps xmm4,xmm2 ; xmm4=tmp10 + addps xmm5,xmm3 ; xmm5=tmp13 + + mulps xmm1,[GOTOFF(ebx,PD_1_414)] + subps xmm1,xmm5 ; xmm1=tmp12 + + movaps xmm6,xmm4 + movaps xmm7,xmm0 + subps xmm4,xmm5 ; xmm4=tmp3 + subps xmm0,xmm1 ; xmm0=tmp2 + addps xmm6,xmm5 ; xmm6=tmp0 + addps xmm7,xmm1 ; xmm7=tmp1 + + movaps XMMWORD [wk(1)], xmm4 ; tmp3 + movaps XMMWORD [wk(0)], xmm0 ; tmp2 + + ; -- Odd part + + movq mm4, MMWORD [MMBLOCK(1,0,esi,SIZEOF_JCOEF)] + movq mm0, MMWORD [MMBLOCK(3,0,esi,SIZEOF_JCOEF)] + movq mm5, MMWORD [MMBLOCK(5,0,esi,SIZEOF_JCOEF)] + movq mm1, MMWORD [MMBLOCK(7,0,esi,SIZEOF_JCOEF)] + + punpckhwd mm6,mm4 ; mm6=(** 12 ** 13) + punpcklwd mm4,mm4 ; mm4=(10 10 11 11) + punpckhwd mm2,mm0 ; mm2=(** 32 ** 33) + punpcklwd mm0,mm0 ; mm0=(30 30 31 31) + + psrad mm6,(DWORD_BIT-WORD_BIT) ; mm6=in1H=(12 13) + psrad mm4,(DWORD_BIT-WORD_BIT) ; mm4=in1L=(10 11) + cvtpi2ps xmm4,mm6 ; xmm4=(12 13 ** **) + cvtpi2ps xmm2,mm4 ; xmm2=(10 11 ** **) + psrad mm2,(DWORD_BIT-WORD_BIT) ; mm2=in3H=(32 33) + psrad mm0,(DWORD_BIT-WORD_BIT) ; mm0=in3L=(30 31) + cvtpi2ps xmm0,mm2 ; xmm0=(32 33 ** **) + cvtpi2ps xmm3,mm0 ; xmm3=(30 31 ** **) + + punpckhwd mm7,mm5 ; mm7=(** 52 ** 53) + punpcklwd mm5,mm5 ; mm5=(50 50 51 51) + punpckhwd mm3,mm1 ; mm3=(** 72 ** 73) + punpcklwd mm1,mm1 ; mm1=(70 70 71 71) + + movlhps xmm2,xmm4 ; xmm2=in1=(10 11 12 13) + movlhps xmm3,xmm0 ; xmm3=in3=(30 31 32 33) + + psrad mm7,(DWORD_BIT-WORD_BIT) ; mm7=in5H=(52 53) + psrad mm5,(DWORD_BIT-WORD_BIT) ; mm5=in5L=(50 51) + cvtpi2ps xmm4,mm7 ; xmm4=(52 53 ** **) + cvtpi2ps xmm5,mm5 ; xmm5=(50 51 ** **) + psrad mm3,(DWORD_BIT-WORD_BIT) ; mm3=in7H=(72 73) + psrad mm1,(DWORD_BIT-WORD_BIT) ; mm1=in7L=(70 71) + cvtpi2ps xmm0,mm3 ; xmm0=(72 73 ** **) + cvtpi2ps xmm1,mm1 ; xmm1=(70 71 ** **) + + mulps xmm2, XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_FLOAT_MULT_TYPE)] + mulps xmm3, XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_FLOAT_MULT_TYPE)] + + movlhps xmm5,xmm4 ; xmm5=in5=(50 51 52 53) + movlhps xmm1,xmm0 ; xmm1=in7=(70 71 72 73) + mulps xmm5, XMMWORD [XMMBLOCK(5,0,edx,SIZEOF_FLOAT_MULT_TYPE)] + mulps xmm1, XMMWORD [XMMBLOCK(7,0,edx,SIZEOF_FLOAT_MULT_TYPE)] + + movaps xmm4,xmm2 + movaps xmm0,xmm5 + addps xmm2,xmm1 ; xmm2=z11 + addps xmm5,xmm3 ; xmm5=z13 + subps xmm4,xmm1 ; xmm4=z12 + subps xmm0,xmm3 ; xmm0=z10 + + movaps xmm1,xmm2 + subps xmm2,xmm5 + addps xmm1,xmm5 ; xmm1=tmp7 + + mulps xmm2,[GOTOFF(ebx,PD_1_414)] ; xmm2=tmp11 + + movaps xmm3,xmm0 + addps xmm0,xmm4 + mulps xmm0,[GOTOFF(ebx,PD_1_847)] ; xmm0=z5 + mulps xmm3,[GOTOFF(ebx,PD_M2_613)] ; xmm3=(z10 * -2.613125930) + mulps xmm4,[GOTOFF(ebx,PD_1_082)] ; xmm4=(z12 * 1.082392200) + addps xmm3,xmm0 ; xmm3=tmp12 + subps xmm4,xmm0 ; xmm4=tmp10 + + ; -- Final output stage + + subps xmm3,xmm1 ; xmm3=tmp6 + movaps xmm5,xmm6 + movaps xmm0,xmm7 + addps xmm6,xmm1 ; xmm6=data0=(00 01 02 03) + addps xmm7,xmm3 ; xmm7=data1=(10 11 12 13) + subps xmm5,xmm1 ; xmm5=data7=(70 71 72 73) + subps xmm0,xmm3 ; xmm0=data6=(60 61 62 63) + subps xmm2,xmm3 ; xmm2=tmp5 + + movaps xmm1,xmm6 ; transpose coefficients(phase 1) + unpcklps xmm6,xmm7 ; xmm6=(00 10 01 11) + unpckhps xmm1,xmm7 ; xmm1=(02 12 03 13) + movaps xmm3,xmm0 ; transpose coefficients(phase 1) + unpcklps xmm0,xmm5 ; xmm0=(60 70 61 71) + unpckhps xmm3,xmm5 ; xmm3=(62 72 63 73) + + movaps xmm7, XMMWORD [wk(0)] ; xmm7=tmp2 + movaps xmm5, XMMWORD [wk(1)] ; xmm5=tmp3 + + movaps XMMWORD [wk(0)], xmm0 ; wk(0)=(60 70 61 71) + movaps XMMWORD [wk(1)], xmm3 ; wk(1)=(62 72 63 73) + + addps xmm4,xmm2 ; xmm4=tmp4 + movaps xmm0,xmm7 + movaps xmm3,xmm5 + addps xmm7,xmm2 ; xmm7=data2=(20 21 22 23) + addps xmm5,xmm4 ; xmm5=data4=(40 41 42 43) + subps xmm0,xmm2 ; xmm0=data5=(50 51 52 53) + subps xmm3,xmm4 ; xmm3=data3=(30 31 32 33) + + movaps xmm2,xmm7 ; transpose coefficients(phase 1) + unpcklps xmm7,xmm3 ; xmm7=(20 30 21 31) + unpckhps xmm2,xmm3 ; xmm2=(22 32 23 33) + movaps xmm4,xmm5 ; transpose coefficients(phase 1) + unpcklps xmm5,xmm0 ; xmm5=(40 50 41 51) + unpckhps xmm4,xmm0 ; xmm4=(42 52 43 53) + + movaps xmm3,xmm6 ; transpose coefficients(phase 2) + unpcklps2 xmm6,xmm7 ; xmm6=(00 10 20 30) + unpckhps2 xmm3,xmm7 ; xmm3=(01 11 21 31) + movaps xmm0,xmm1 ; transpose coefficients(phase 2) + unpcklps2 xmm1,xmm2 ; xmm1=(02 12 22 32) + unpckhps2 xmm0,xmm2 ; xmm0=(03 13 23 33) + + movaps xmm7, XMMWORD [wk(0)] ; xmm7=(60 70 61 71) + movaps xmm2, XMMWORD [wk(1)] ; xmm2=(62 72 63 73) + + movaps XMMWORD [XMMBLOCK(0,0,edi,SIZEOF_FAST_FLOAT)], xmm6 + movaps XMMWORD [XMMBLOCK(1,0,edi,SIZEOF_FAST_FLOAT)], xmm3 + movaps XMMWORD [XMMBLOCK(2,0,edi,SIZEOF_FAST_FLOAT)], xmm1 + movaps XMMWORD [XMMBLOCK(3,0,edi,SIZEOF_FAST_FLOAT)], xmm0 + + movaps xmm6,xmm5 ; transpose coefficients(phase 2) + unpcklps2 xmm5,xmm7 ; xmm5=(40 50 60 70) + unpckhps2 xmm6,xmm7 ; xmm6=(41 51 61 71) + movaps xmm3,xmm4 ; transpose coefficients(phase 2) + unpcklps2 xmm4,xmm2 ; xmm4=(42 52 62 72) + unpckhps2 xmm3,xmm2 ; xmm3=(43 53 63 73) + + movaps XMMWORD [XMMBLOCK(0,1,edi,SIZEOF_FAST_FLOAT)], xmm5 + movaps XMMWORD [XMMBLOCK(1,1,edi,SIZEOF_FAST_FLOAT)], xmm6 + movaps XMMWORD [XMMBLOCK(2,1,edi,SIZEOF_FAST_FLOAT)], xmm4 + movaps XMMWORD [XMMBLOCK(3,1,edi,SIZEOF_FAST_FLOAT)], xmm3 + +.nextcolumn: + add esi, byte 4*SIZEOF_JCOEF ; coef_block + add edx, byte 4*SIZEOF_FLOAT_MULT_TYPE ; quantptr + add edi, 4*DCTSIZE*SIZEOF_FAST_FLOAT ; wsptr + dec ecx ; ctr + jnz near .columnloop + + ; -- Prefetch the next coefficient block + + prefetchnta [esi + (DCTSIZE2-8)*SIZEOF_JCOEF + 0*32] + prefetchnta [esi + (DCTSIZE2-8)*SIZEOF_JCOEF + 1*32] + prefetchnta [esi + (DCTSIZE2-8)*SIZEOF_JCOEF + 2*32] + prefetchnta [esi + (DCTSIZE2-8)*SIZEOF_JCOEF + 3*32] + + ; ---- Pass 2: process rows from work array, store into output array. + + mov eax, [original_ebp] + lea esi, [workspace] ; FAST_FLOAT *wsptr + mov edi, JSAMPARRAY [output_buf(eax)] ; (JSAMPROW *) + mov eax, JDIMENSION [output_col(eax)] + mov ecx, DCTSIZE/4 ; ctr + alignx 16,7 +.rowloop: + + ; -- Even part + + movaps xmm0, XMMWORD [XMMBLOCK(0,0,esi,SIZEOF_FAST_FLOAT)] + movaps xmm1, XMMWORD [XMMBLOCK(2,0,esi,SIZEOF_FAST_FLOAT)] + movaps xmm2, XMMWORD [XMMBLOCK(4,0,esi,SIZEOF_FAST_FLOAT)] + movaps xmm3, XMMWORD [XMMBLOCK(6,0,esi,SIZEOF_FAST_FLOAT)] + + movaps xmm4,xmm0 + movaps xmm5,xmm1 + subps xmm0,xmm2 ; xmm0=tmp11 + subps xmm1,xmm3 + addps xmm4,xmm2 ; xmm4=tmp10 + addps xmm5,xmm3 ; xmm5=tmp13 + + mulps xmm1,[GOTOFF(ebx,PD_1_414)] + subps xmm1,xmm5 ; xmm1=tmp12 + + movaps xmm6,xmm4 + movaps xmm7,xmm0 + subps xmm4,xmm5 ; xmm4=tmp3 + subps xmm0,xmm1 ; xmm0=tmp2 + addps xmm6,xmm5 ; xmm6=tmp0 + addps xmm7,xmm1 ; xmm7=tmp1 + + movaps XMMWORD [wk(1)], xmm4 ; tmp3 + movaps XMMWORD [wk(0)], xmm0 ; tmp2 + + ; -- Odd part + + movaps xmm2, XMMWORD [XMMBLOCK(1,0,esi,SIZEOF_FAST_FLOAT)] + movaps xmm3, XMMWORD [XMMBLOCK(3,0,esi,SIZEOF_FAST_FLOAT)] + movaps xmm5, XMMWORD [XMMBLOCK(5,0,esi,SIZEOF_FAST_FLOAT)] + movaps xmm1, XMMWORD [XMMBLOCK(7,0,esi,SIZEOF_FAST_FLOAT)] + + movaps xmm4,xmm2 + movaps xmm0,xmm5 + addps xmm2,xmm1 ; xmm2=z11 + addps xmm5,xmm3 ; xmm5=z13 + subps xmm4,xmm1 ; xmm4=z12 + subps xmm0,xmm3 ; xmm0=z10 + + movaps xmm1,xmm2 + subps xmm2,xmm5 + addps xmm1,xmm5 ; xmm1=tmp7 + + mulps xmm2,[GOTOFF(ebx,PD_1_414)] ; xmm2=tmp11 + + movaps xmm3,xmm0 + addps xmm0,xmm4 + mulps xmm0,[GOTOFF(ebx,PD_1_847)] ; xmm0=z5 + mulps xmm3,[GOTOFF(ebx,PD_M2_613)] ; xmm3=(z10 * -2.613125930) + mulps xmm4,[GOTOFF(ebx,PD_1_082)] ; xmm4=(z12 * 1.082392200) + addps xmm3,xmm0 ; xmm3=tmp12 + subps xmm4,xmm0 ; xmm4=tmp10 + + ; -- Final output stage + + subps xmm3,xmm1 ; xmm3=tmp6 + movaps xmm5,xmm6 + movaps xmm0,xmm7 + addps xmm6,xmm1 ; xmm6=data0=(00 10 20 30) + addps xmm7,xmm3 ; xmm7=data1=(01 11 21 31) + subps xmm5,xmm1 ; xmm5=data7=(07 17 27 37) + subps xmm0,xmm3 ; xmm0=data6=(06 16 26 36) + subps xmm2,xmm3 ; xmm2=tmp5 + + movaps xmm1,[GOTOFF(ebx,PD_0_125)] ; xmm1=[PD_0_125] + + mulps xmm6,xmm1 ; descale(1/8) + mulps xmm7,xmm1 ; descale(1/8) + mulps xmm5,xmm1 ; descale(1/8) + mulps xmm0,xmm1 ; descale(1/8) + + movhlps xmm3,xmm6 + movhlps xmm1,xmm7 + cvtps2pi mm0,xmm6 ; round to int32, mm0=data0L=(00 10) + cvtps2pi mm1,xmm7 ; round to int32, mm1=data1L=(01 11) + cvtps2pi mm2,xmm3 ; round to int32, mm2=data0H=(20 30) + cvtps2pi mm3,xmm1 ; round to int32, mm3=data1H=(21 31) + packssdw mm0,mm2 ; mm0=data0=(00 10 20 30) + packssdw mm1,mm3 ; mm1=data1=(01 11 21 31) + + movhlps xmm6,xmm5 + movhlps xmm7,xmm0 + cvtps2pi mm4,xmm5 ; round to int32, mm4=data7L=(07 17) + cvtps2pi mm5,xmm0 ; round to int32, mm5=data6L=(06 16) + cvtps2pi mm6,xmm6 ; round to int32, mm6=data7H=(27 37) + cvtps2pi mm7,xmm7 ; round to int32, mm7=data6H=(26 36) + packssdw mm4,mm6 ; mm4=data7=(07 17 27 37) + packssdw mm5,mm7 ; mm5=data6=(06 16 26 36) + + packsswb mm0,mm5 ; mm0=(00 10 20 30 06 16 26 36) + packsswb mm1,mm4 ; mm1=(01 11 21 31 07 17 27 37) + + movaps xmm3, XMMWORD [wk(0)] ; xmm3=tmp2 + movaps xmm1, XMMWORD [wk(1)] ; xmm1=tmp3 + + movaps xmm6,[GOTOFF(ebx,PD_0_125)] ; xmm6=[PD_0_125] + + addps xmm4,xmm2 ; xmm4=tmp4 + movaps xmm5,xmm3 + movaps xmm0,xmm1 + addps xmm3,xmm2 ; xmm3=data2=(02 12 22 32) + addps xmm1,xmm4 ; xmm1=data4=(04 14 24 34) + subps xmm5,xmm2 ; xmm5=data5=(05 15 25 35) + subps xmm0,xmm4 ; xmm0=data3=(03 13 23 33) + + mulps xmm3,xmm6 ; descale(1/8) + mulps xmm1,xmm6 ; descale(1/8) + mulps xmm5,xmm6 ; descale(1/8) + mulps xmm0,xmm6 ; descale(1/8) + + movhlps xmm7,xmm3 + movhlps xmm2,xmm1 + cvtps2pi mm2,xmm3 ; round to int32, mm2=data2L=(02 12) + cvtps2pi mm3,xmm1 ; round to int32, mm3=data4L=(04 14) + cvtps2pi mm6,xmm7 ; round to int32, mm6=data2H=(22 32) + cvtps2pi mm7,xmm2 ; round to int32, mm7=data4H=(24 34) + packssdw mm2,mm6 ; mm2=data2=(02 12 22 32) + packssdw mm3,mm7 ; mm3=data4=(04 14 24 34) + + movhlps xmm4,xmm5 + movhlps xmm6,xmm0 + cvtps2pi mm5,xmm5 ; round to int32, mm5=data5L=(05 15) + cvtps2pi mm4,xmm0 ; round to int32, mm4=data3L=(03 13) + cvtps2pi mm6,xmm4 ; round to int32, mm6=data5H=(25 35) + cvtps2pi mm7,xmm6 ; round to int32, mm7=data3H=(23 33) + packssdw mm5,mm6 ; mm5=data5=(05 15 25 35) + packssdw mm4,mm7 ; mm4=data3=(03 13 23 33) + + movq mm6,[GOTOFF(ebx,PB_CENTERJSAMP)] ; mm6=[PB_CENTERJSAMP] + + packsswb mm2,mm3 ; mm2=(02 12 22 32 04 14 24 34) + packsswb mm4,mm5 ; mm4=(03 13 23 33 05 15 25 35) + + paddb mm0,mm6 + paddb mm1,mm6 + paddb mm2,mm6 + paddb mm4,mm6 + + movq mm7,mm0 ; transpose coefficients(phase 1) + punpcklbw mm0,mm1 ; mm0=(00 01 10 11 20 21 30 31) + punpckhbw mm7,mm1 ; mm7=(06 07 16 17 26 27 36 37) + movq mm3,mm2 ; transpose coefficients(phase 1) + punpcklbw mm2,mm4 ; mm2=(02 03 12 13 22 23 32 33) + punpckhbw mm3,mm4 ; mm3=(04 05 14 15 24 25 34 35) + + movq mm5,mm0 ; transpose coefficients(phase 2) + punpcklwd mm0,mm2 ; mm0=(00 01 02 03 10 11 12 13) + punpckhwd mm5,mm2 ; mm5=(20 21 22 23 30 31 32 33) + movq mm6,mm3 ; transpose coefficients(phase 2) + punpcklwd mm3,mm7 ; mm3=(04 05 06 07 14 15 16 17) + punpckhwd mm6,mm7 ; mm6=(24 25 26 27 34 35 36 37) + + movq mm1,mm0 ; transpose coefficients(phase 3) + punpckldq mm0,mm3 ; mm0=(00 01 02 03 04 05 06 07) + punpckhdq mm1,mm3 ; mm1=(10 11 12 13 14 15 16 17) + movq mm4,mm5 ; transpose coefficients(phase 3) + punpckldq mm5,mm6 ; mm5=(20 21 22 23 24 25 26 27) + punpckhdq mm4,mm6 ; mm4=(30 31 32 33 34 35 36 37) + + pushpic ebx ; save GOT address + + mov edx, JSAMPROW [edi+0*SIZEOF_JSAMPROW] + mov ebx, JSAMPROW [edi+1*SIZEOF_JSAMPROW] + movq MMWORD [edx+eax*SIZEOF_JSAMPLE], mm0 + movq MMWORD [ebx+eax*SIZEOF_JSAMPLE], mm1 + mov edx, JSAMPROW [edi+2*SIZEOF_JSAMPROW] + mov ebx, JSAMPROW [edi+3*SIZEOF_JSAMPROW] + movq MMWORD [edx+eax*SIZEOF_JSAMPLE], mm5 + movq MMWORD [ebx+eax*SIZEOF_JSAMPLE], mm4 + + poppic ebx ; restore GOT address + + add esi, byte 4*SIZEOF_FAST_FLOAT ; wsptr + add edi, byte 4*SIZEOF_JSAMPROW + dec ecx ; ctr + jnz near .rowloop + + emms ; empty MMX state + + 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 + +; For some reason, the OS X linker does not honor the request to align the +; segment unless we do this. + align 16 |