| ; |
| ; jidctint.asm - accurate integer IDCT (MMX) |
| ; |
| ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB |
| ; Copyright (C) 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 |
| ; |
| ; This file contains a slow-but-accurate integer implementation of the |
| ; inverse DCT (Discrete Cosine Transform). The following code is based |
| ; directly on the IJG's original jidctint.c; see the jidctint.c for |
| ; more details. |
| ; |
| ; [TAB8] |
| |
| %include "jsimdext.inc" |
| %include "jdct.inc" |
| |
| ; -------------------------------------------------------------------------- |
| |
| %define CONST_BITS 13 |
| %define PASS1_BITS 2 |
| |
| %define DESCALE_P1 (CONST_BITS - PASS1_BITS) |
| %define DESCALE_P2 (CONST_BITS + PASS1_BITS + 3) |
| |
| %if CONST_BITS == 13 |
| F_0_298 equ 2446 ; FIX(0.298631336) |
| F_0_390 equ 3196 ; FIX(0.390180644) |
| F_0_541 equ 4433 ; FIX(0.541196100) |
| F_0_765 equ 6270 ; FIX(0.765366865) |
| F_0_899 equ 7373 ; FIX(0.899976223) |
| F_1_175 equ 9633 ; FIX(1.175875602) |
| F_1_501 equ 12299 ; FIX(1.501321110) |
| F_1_847 equ 15137 ; FIX(1.847759065) |
| F_1_961 equ 16069 ; FIX(1.961570560) |
| F_2_053 equ 16819 ; FIX(2.053119869) |
| F_2_562 equ 20995 ; FIX(2.562915447) |
| F_3_072 equ 25172 ; FIX(3.072711026) |
| %else |
| ; NASM cannot do compile-time arithmetic on floating-point constants. |
| %define DESCALE(x, n) (((x) + (1 << ((n) - 1))) >> (n)) |
| F_0_298 equ DESCALE( 320652955, 30 - CONST_BITS) ; FIX(0.298631336) |
| F_0_390 equ DESCALE( 418953276, 30 - CONST_BITS) ; FIX(0.390180644) |
| F_0_541 equ DESCALE( 581104887, 30 - CONST_BITS) ; FIX(0.541196100) |
| F_0_765 equ DESCALE( 821806413, 30 - CONST_BITS) ; FIX(0.765366865) |
| F_0_899 equ DESCALE( 966342111, 30 - CONST_BITS) ; FIX(0.899976223) |
| F_1_175 equ DESCALE(1262586813, 30 - CONST_BITS) ; FIX(1.175875602) |
| F_1_501 equ DESCALE(1612031267, 30 - CONST_BITS) ; FIX(1.501321110) |
| F_1_847 equ DESCALE(1984016188, 30 - CONST_BITS) ; FIX(1.847759065) |
| F_1_961 equ DESCALE(2106220350, 30 - CONST_BITS) ; FIX(1.961570560) |
| F_2_053 equ DESCALE(2204520673, 30 - CONST_BITS) ; FIX(2.053119869) |
| F_2_562 equ DESCALE(2751909506, 30 - CONST_BITS) ; FIX(2.562915447) |
| F_3_072 equ DESCALE(3299298341, 30 - CONST_BITS) ; FIX(3.072711026) |
| %endif |
| |
| ; -------------------------------------------------------------------------- |
| SECTION SEG_CONST |
| |
| alignz 32 |
| GLOBAL_DATA(jconst_idct_islow_mmx) |
| |
| EXTN(jconst_idct_islow_mmx): |
| |
| PW_F130_F054 times 2 dw (F_0_541 + F_0_765), F_0_541 |
| PW_F054_MF130 times 2 dw F_0_541, (F_0_541 - F_1_847) |
| PW_MF078_F117 times 2 dw (F_1_175 - F_1_961), F_1_175 |
| PW_F117_F078 times 2 dw F_1_175, (F_1_175 - F_0_390) |
| PW_MF060_MF089 times 2 dw (F_0_298 - F_0_899), -F_0_899 |
| PW_MF089_F060 times 2 dw -F_0_899, (F_1_501 - F_0_899) |
| PW_MF050_MF256 times 2 dw (F_2_053 - F_2_562), -F_2_562 |
| PW_MF256_F050 times 2 dw -F_2_562, (F_3_072 - F_2_562) |
| PD_DESCALE_P1 times 2 dd 1 << (DESCALE_P1 - 1) |
| PD_DESCALE_P2 times 2 dd 1 << (DESCALE_P2 - 1) |
| PB_CENTERJSAMP times 8 db CENTERJSAMPLE |
| |
| alignz 32 |
| |
| ; -------------------------------------------------------------------------- |
| SECTION SEG_TEXT |
| BITS 32 |
| ; |
| ; Perform dequantization and inverse DCT on one block of coefficients. |
| ; |
| ; GLOBAL(void) |
| ; jsimd_idct_islow_mmx(void *dct_table, JCOEFPTR coef_block, |
| ; JSAMPARRAY output_buf, JDIMENSION output_col) |
| ; |
| |
| %define dct_table(b) (b) + 8 ; jpeg_component_info *compptr |
| %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_MMWORD |
| ; mmword wk[WK_NUM] |
| %define WK_NUM 12 |
| %define workspace wk(0) - DCTSIZE2 * SIZEOF_JCOEF |
| ; JCOEF workspace[DCTSIZE2] |
| |
| align 32 |
| GLOBAL_FUNCTION(jsimd_idct_islow_mmx) |
| |
| EXTN(jsimd_idct_islow_mmx): |
| push ebp |
| mov eax, esp ; eax = original ebp |
| sub esp, byte 4 |
| and esp, byte (-SIZEOF_MMWORD) ; align to 64 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] ; JCOEF *wsptr |
| mov ecx, DCTSIZE/4 ; ctr |
| alignx 16, 7 |
| .columnloop: |
| %ifndef NO_ZERO_COLUMN_TEST_ISLOW_MMX |
| mov eax, DWORD [DWBLOCK(1,0,esi,SIZEOF_JCOEF)] |
| or eax, DWORD [DWBLOCK(2,0,esi,SIZEOF_JCOEF)] |
| jnz short .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)] |
| pmullw mm0, MMWORD [MMBLOCK(0,0,edx,SIZEOF_ISLOW_MULT_TYPE)] |
| |
| psllw mm0, PASS1_BITS |
| |
| movq mm2, mm0 ; mm0=in0=(00 01 02 03) |
| punpcklwd mm0, mm0 ; mm0=(00 00 01 01) |
| punpckhwd mm2, mm2 ; mm2=(02 02 03 03) |
| |
| movq mm1, mm0 |
| punpckldq mm0, mm0 ; mm0=(00 00 00 00) |
| punpckhdq mm1, mm1 ; mm1=(01 01 01 01) |
| movq mm3, mm2 |
| punpckldq mm2, mm2 ; mm2=(02 02 02 02) |
| punpckhdq mm3, mm3 ; mm3=(03 03 03 03) |
| |
| movq MMWORD [MMBLOCK(0,0,edi,SIZEOF_JCOEF)], mm0 |
| movq MMWORD [MMBLOCK(0,1,edi,SIZEOF_JCOEF)], mm0 |
| movq MMWORD [MMBLOCK(1,0,edi,SIZEOF_JCOEF)], mm1 |
| movq MMWORD [MMBLOCK(1,1,edi,SIZEOF_JCOEF)], mm1 |
| movq MMWORD [MMBLOCK(2,0,edi,SIZEOF_JCOEF)], mm2 |
| movq MMWORD [MMBLOCK(2,1,edi,SIZEOF_JCOEF)], mm2 |
| movq MMWORD [MMBLOCK(3,0,edi,SIZEOF_JCOEF)], mm3 |
| movq MMWORD [MMBLOCK(3,1,edi,SIZEOF_JCOEF)], mm3 |
| 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)] |
| pmullw mm0, MMWORD [MMBLOCK(0,0,edx,SIZEOF_ISLOW_MULT_TYPE)] |
| pmullw mm1, MMWORD [MMBLOCK(2,0,edx,SIZEOF_ISLOW_MULT_TYPE)] |
| movq mm2, MMWORD [MMBLOCK(4,0,esi,SIZEOF_JCOEF)] |
| movq mm3, MMWORD [MMBLOCK(6,0,esi,SIZEOF_JCOEF)] |
| pmullw mm2, MMWORD [MMBLOCK(4,0,edx,SIZEOF_ISLOW_MULT_TYPE)] |
| pmullw mm3, MMWORD [MMBLOCK(6,0,edx,SIZEOF_ISLOW_MULT_TYPE)] |
| |
| ; (Original) |
| ; z1 = (z2 + z3) * 0.541196100; |
| ; tmp2 = z1 + z3 * -1.847759065; |
| ; tmp3 = z1 + z2 * 0.765366865; |
| ; |
| ; (This implementation) |
| ; tmp2 = z2 * 0.541196100 + z3 * (0.541196100 - 1.847759065); |
| ; tmp3 = z2 * (0.541196100 + 0.765366865) + z3 * 0.541196100; |
| |
| movq mm4, mm1 ; mm1=in2=z2 |
| movq mm5, mm1 |
| punpcklwd mm4, mm3 ; mm3=in6=z3 |
| punpckhwd mm5, mm3 |
| movq mm1, mm4 |
| movq mm3, mm5 |
| pmaddwd mm4, [GOTOFF(ebx,PW_F130_F054)] ; mm4=tmp3L |
| pmaddwd mm5, [GOTOFF(ebx,PW_F130_F054)] ; mm5=tmp3H |
| pmaddwd mm1, [GOTOFF(ebx,PW_F054_MF130)] ; mm1=tmp2L |
| pmaddwd mm3, [GOTOFF(ebx,PW_F054_MF130)] ; mm3=tmp2H |
| |
| movq mm6, mm0 |
| paddw mm0, mm2 ; mm0=in0+in4 |
| psubw mm6, mm2 ; mm6=in0-in4 |
| |
| pxor mm7, mm7 |
| pxor mm2, mm2 |
| punpcklwd mm7, mm0 ; mm7=tmp0L |
| punpckhwd mm2, mm0 ; mm2=tmp0H |
| psrad mm7, (16-CONST_BITS) ; psrad mm7,16 & pslld mm7,CONST_BITS |
| psrad mm2, (16-CONST_BITS) ; psrad mm2,16 & pslld mm2,CONST_BITS |
| |
| movq mm0, mm7 |
| paddd mm7, mm4 ; mm7=tmp10L |
| psubd mm0, mm4 ; mm0=tmp13L |
| movq mm4, mm2 |
| paddd mm2, mm5 ; mm2=tmp10H |
| psubd mm4, mm5 ; mm4=tmp13H |
| |
| movq MMWORD [wk(0)], mm7 ; wk(0)=tmp10L |
| movq MMWORD [wk(1)], mm2 ; wk(1)=tmp10H |
| movq MMWORD [wk(2)], mm0 ; wk(2)=tmp13L |
| movq MMWORD [wk(3)], mm4 ; wk(3)=tmp13H |
| |
| pxor mm5, mm5 |
| pxor mm7, mm7 |
| punpcklwd mm5, mm6 ; mm5=tmp1L |
| punpckhwd mm7, mm6 ; mm7=tmp1H |
| psrad mm5, (16-CONST_BITS) ; psrad mm5,16 & pslld mm5,CONST_BITS |
| psrad mm7, (16-CONST_BITS) ; psrad mm7,16 & pslld mm7,CONST_BITS |
| |
| movq mm2, mm5 |
| paddd mm5, mm1 ; mm5=tmp11L |
| psubd mm2, mm1 ; mm2=tmp12L |
| movq mm0, mm7 |
| paddd mm7, mm3 ; mm7=tmp11H |
| psubd mm0, mm3 ; mm0=tmp12H |
| |
| movq MMWORD [wk(4)], mm5 ; wk(4)=tmp11L |
| movq MMWORD [wk(5)], mm7 ; wk(5)=tmp11H |
| movq MMWORD [wk(6)], mm2 ; wk(6)=tmp12L |
| movq MMWORD [wk(7)], mm0 ; wk(7)=tmp12H |
| |
| ; -- Odd part |
| |
| movq mm4, MMWORD [MMBLOCK(1,0,esi,SIZEOF_JCOEF)] |
| movq mm6, MMWORD [MMBLOCK(3,0,esi,SIZEOF_JCOEF)] |
| pmullw mm4, MMWORD [MMBLOCK(1,0,edx,SIZEOF_ISLOW_MULT_TYPE)] |
| pmullw mm6, MMWORD [MMBLOCK(3,0,edx,SIZEOF_ISLOW_MULT_TYPE)] |
| movq mm1, MMWORD [MMBLOCK(5,0,esi,SIZEOF_JCOEF)] |
| movq mm3, MMWORD [MMBLOCK(7,0,esi,SIZEOF_JCOEF)] |
| pmullw mm1, MMWORD [MMBLOCK(5,0,edx,SIZEOF_ISLOW_MULT_TYPE)] |
| pmullw mm3, MMWORD [MMBLOCK(7,0,edx,SIZEOF_ISLOW_MULT_TYPE)] |
| |
| movq mm5, mm6 |
| movq mm7, mm4 |
| paddw mm5, mm3 ; mm5=z3 |
| paddw mm7, mm1 ; mm7=z4 |
| |
| ; (Original) |
| ; z5 = (z3 + z4) * 1.175875602; |
| ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644; |
| ; z3 += z5; z4 += z5; |
| ; |
| ; (This implementation) |
| ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602; |
| ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644); |
| |
| movq mm2, mm5 |
| movq mm0, mm5 |
| punpcklwd mm2, mm7 |
| punpckhwd mm0, mm7 |
| movq mm5, mm2 |
| movq mm7, mm0 |
| pmaddwd mm2, [GOTOFF(ebx,PW_MF078_F117)] ; mm2=z3L |
| pmaddwd mm0, [GOTOFF(ebx,PW_MF078_F117)] ; mm0=z3H |
| pmaddwd mm5, [GOTOFF(ebx,PW_F117_F078)] ; mm5=z4L |
| pmaddwd mm7, [GOTOFF(ebx,PW_F117_F078)] ; mm7=z4H |
| |
| movq MMWORD [wk(10)], mm2 ; wk(10)=z3L |
| movq MMWORD [wk(11)], mm0 ; wk(11)=z3H |
| |
| ; (Original) |
| ; z1 = tmp0 + tmp3; z2 = tmp1 + tmp2; |
| ; tmp0 = tmp0 * 0.298631336; tmp1 = tmp1 * 2.053119869; |
| ; tmp2 = tmp2 * 3.072711026; tmp3 = tmp3 * 1.501321110; |
| ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447; |
| ; tmp0 += z1 + z3; tmp1 += z2 + z4; |
| ; tmp2 += z2 + z3; tmp3 += z1 + z4; |
| ; |
| ; (This implementation) |
| ; tmp0 = tmp0 * (0.298631336 - 0.899976223) + tmp3 * -0.899976223; |
| ; tmp1 = tmp1 * (2.053119869 - 2.562915447) + tmp2 * -2.562915447; |
| ; tmp2 = tmp1 * -2.562915447 + tmp2 * (3.072711026 - 2.562915447); |
| ; tmp3 = tmp0 * -0.899976223 + tmp3 * (1.501321110 - 0.899976223); |
| ; tmp0 += z3; tmp1 += z4; |
| ; tmp2 += z3; tmp3 += z4; |
| |
| movq mm2, mm3 |
| movq mm0, mm3 |
| punpcklwd mm2, mm4 |
| punpckhwd mm0, mm4 |
| movq mm3, mm2 |
| movq mm4, mm0 |
| pmaddwd mm2, [GOTOFF(ebx,PW_MF060_MF089)] ; mm2=tmp0L |
| pmaddwd mm0, [GOTOFF(ebx,PW_MF060_MF089)] ; mm0=tmp0H |
| pmaddwd mm3, [GOTOFF(ebx,PW_MF089_F060)] ; mm3=tmp3L |
| pmaddwd mm4, [GOTOFF(ebx,PW_MF089_F060)] ; mm4=tmp3H |
| |
| paddd mm2, MMWORD [wk(10)] ; mm2=tmp0L |
| paddd mm0, MMWORD [wk(11)] ; mm0=tmp0H |
| paddd mm3, mm5 ; mm3=tmp3L |
| paddd mm4, mm7 ; mm4=tmp3H |
| |
| movq MMWORD [wk(8)], mm2 ; wk(8)=tmp0L |
| movq MMWORD [wk(9)], mm0 ; wk(9)=tmp0H |
| |
| movq mm2, mm1 |
| movq mm0, mm1 |
| punpcklwd mm2, mm6 |
| punpckhwd mm0, mm6 |
| movq mm1, mm2 |
| movq mm6, mm0 |
| pmaddwd mm2, [GOTOFF(ebx,PW_MF050_MF256)] ; mm2=tmp1L |
| pmaddwd mm0, [GOTOFF(ebx,PW_MF050_MF256)] ; mm0=tmp1H |
| pmaddwd mm1, [GOTOFF(ebx,PW_MF256_F050)] ; mm1=tmp2L |
| pmaddwd mm6, [GOTOFF(ebx,PW_MF256_F050)] ; mm6=tmp2H |
| |
| paddd mm2, mm5 ; mm2=tmp1L |
| paddd mm0, mm7 ; mm0=tmp1H |
| paddd mm1, MMWORD [wk(10)] ; mm1=tmp2L |
| paddd mm6, MMWORD [wk(11)] ; mm6=tmp2H |
| |
| movq MMWORD [wk(10)], mm2 ; wk(10)=tmp1L |
| movq MMWORD [wk(11)], mm0 ; wk(11)=tmp1H |
| |
| ; -- Final output stage |
| |
| movq mm5, MMWORD [wk(0)] ; mm5=tmp10L |
| movq mm7, MMWORD [wk(1)] ; mm7=tmp10H |
| |
| movq mm2, mm5 |
| movq mm0, mm7 |
| paddd mm5, mm3 ; mm5=data0L |
| paddd mm7, mm4 ; mm7=data0H |
| psubd mm2, mm3 ; mm2=data7L |
| psubd mm0, mm4 ; mm0=data7H |
| |
| movq mm3, [GOTOFF(ebx,PD_DESCALE_P1)] ; mm3=[PD_DESCALE_P1] |
| |
| paddd mm5, mm3 |
| paddd mm7, mm3 |
| psrad mm5, DESCALE_P1 |
| psrad mm7, DESCALE_P1 |
| paddd mm2, mm3 |
| paddd mm0, mm3 |
| psrad mm2, DESCALE_P1 |
| psrad mm0, DESCALE_P1 |
| |
| packssdw mm5, mm7 ; mm5=data0=(00 01 02 03) |
| packssdw mm2, mm0 ; mm2=data7=(70 71 72 73) |
| |
| movq mm4, MMWORD [wk(4)] ; mm4=tmp11L |
| movq mm3, MMWORD [wk(5)] ; mm3=tmp11H |
| |
| movq mm7, mm4 |
| movq mm0, mm3 |
| paddd mm4, mm1 ; mm4=data1L |
| paddd mm3, mm6 ; mm3=data1H |
| psubd mm7, mm1 ; mm7=data6L |
| psubd mm0, mm6 ; mm0=data6H |
| |
| movq mm1, [GOTOFF(ebx,PD_DESCALE_P1)] ; mm1=[PD_DESCALE_P1] |
| |
| paddd mm4, mm1 |
| paddd mm3, mm1 |
| psrad mm4, DESCALE_P1 |
| psrad mm3, DESCALE_P1 |
| paddd mm7, mm1 |
| paddd mm0, mm1 |
| psrad mm7, DESCALE_P1 |
| psrad mm0, DESCALE_P1 |
| |
| packssdw mm4, mm3 ; mm4=data1=(10 11 12 13) |
| packssdw mm7, mm0 ; mm7=data6=(60 61 62 63) |
| |
| movq mm6, mm5 ; transpose coefficients(phase 1) |
| punpcklwd mm5, mm4 ; mm5=(00 10 01 11) |
| punpckhwd mm6, mm4 ; mm6=(02 12 03 13) |
| movq mm1, mm7 ; transpose coefficients(phase 1) |
| punpcklwd mm7, mm2 ; mm7=(60 70 61 71) |
| punpckhwd mm1, mm2 ; mm1=(62 72 63 73) |
| |
| movq mm3, MMWORD [wk(6)] ; mm3=tmp12L |
| movq mm0, MMWORD [wk(7)] ; mm0=tmp12H |
| movq mm4, MMWORD [wk(10)] ; mm4=tmp1L |
| movq mm2, MMWORD [wk(11)] ; mm2=tmp1H |
| |
| movq MMWORD [wk(0)], mm5 ; wk(0)=(00 10 01 11) |
| movq MMWORD [wk(1)], mm6 ; wk(1)=(02 12 03 13) |
| movq MMWORD [wk(4)], mm7 ; wk(4)=(60 70 61 71) |
| movq MMWORD [wk(5)], mm1 ; wk(5)=(62 72 63 73) |
| |
| movq mm5, mm3 |
| movq mm6, mm0 |
| paddd mm3, mm4 ; mm3=data2L |
| paddd mm0, mm2 ; mm0=data2H |
| psubd mm5, mm4 ; mm5=data5L |
| psubd mm6, mm2 ; mm6=data5H |
| |
| movq mm7, [GOTOFF(ebx,PD_DESCALE_P1)] ; mm7=[PD_DESCALE_P1] |
| |
| paddd mm3, mm7 |
| paddd mm0, mm7 |
| psrad mm3, DESCALE_P1 |
| psrad mm0, DESCALE_P1 |
| paddd mm5, mm7 |
| paddd mm6, mm7 |
| psrad mm5, DESCALE_P1 |
| psrad mm6, DESCALE_P1 |
| |
| packssdw mm3, mm0 ; mm3=data2=(20 21 22 23) |
| packssdw mm5, mm6 ; mm5=data5=(50 51 52 53) |
| |
| movq mm1, MMWORD [wk(2)] ; mm1=tmp13L |
| movq mm4, MMWORD [wk(3)] ; mm4=tmp13H |
| movq mm2, MMWORD [wk(8)] ; mm2=tmp0L |
| movq mm7, MMWORD [wk(9)] ; mm7=tmp0H |
| |
| movq mm0, mm1 |
| movq mm6, mm4 |
| paddd mm1, mm2 ; mm1=data3L |
| paddd mm4, mm7 ; mm4=data3H |
| psubd mm0, mm2 ; mm0=data4L |
| psubd mm6, mm7 ; mm6=data4H |
| |
| movq mm2, [GOTOFF(ebx,PD_DESCALE_P1)] ; mm2=[PD_DESCALE_P1] |
| |
| paddd mm1, mm2 |
| paddd mm4, mm2 |
| psrad mm1, DESCALE_P1 |
| psrad mm4, DESCALE_P1 |
| paddd mm0, mm2 |
| paddd mm6, mm2 |
| psrad mm0, DESCALE_P1 |
| psrad mm6, DESCALE_P1 |
| |
| packssdw mm1, mm4 ; mm1=data3=(30 31 32 33) |
| packssdw mm0, mm6 ; mm0=data4=(40 41 42 43) |
| |
| movq mm7, MMWORD [wk(0)] ; mm7=(00 10 01 11) |
| movq mm2, MMWORD [wk(1)] ; mm2=(02 12 03 13) |
| |
| movq mm4, mm3 ; transpose coefficients(phase 1) |
| punpcklwd mm3, mm1 ; mm3=(20 30 21 31) |
| punpckhwd mm4, mm1 ; mm4=(22 32 23 33) |
| movq mm6, mm0 ; transpose coefficients(phase 1) |
| punpcklwd mm0, mm5 ; mm0=(40 50 41 51) |
| punpckhwd mm6, mm5 ; mm6=(42 52 43 53) |
| |
| movq mm1, mm7 ; transpose coefficients(phase 2) |
| punpckldq mm7, mm3 ; mm7=(00 10 20 30) |
| punpckhdq mm1, mm3 ; mm1=(01 11 21 31) |
| movq mm5, mm2 ; transpose coefficients(phase 2) |
| punpckldq mm2, mm4 ; mm2=(02 12 22 32) |
| punpckhdq mm5, mm4 ; mm5=(03 13 23 33) |
| |
| movq mm3, MMWORD [wk(4)] ; mm3=(60 70 61 71) |
| movq mm4, MMWORD [wk(5)] ; mm4=(62 72 63 73) |
| |
| movq MMWORD [MMBLOCK(0,0,edi,SIZEOF_JCOEF)], mm7 |
| movq MMWORD [MMBLOCK(1,0,edi,SIZEOF_JCOEF)], mm1 |
| movq MMWORD [MMBLOCK(2,0,edi,SIZEOF_JCOEF)], mm2 |
| movq MMWORD [MMBLOCK(3,0,edi,SIZEOF_JCOEF)], mm5 |
| |
| movq mm7, mm0 ; transpose coefficients(phase 2) |
| punpckldq mm0, mm3 ; mm0=(40 50 60 70) |
| punpckhdq mm7, mm3 ; mm7=(41 51 61 71) |
| movq mm1, mm6 ; transpose coefficients(phase 2) |
| punpckldq mm6, mm4 ; mm6=(42 52 62 72) |
| punpckhdq mm1, mm4 ; mm1=(43 53 63 73) |
| |
| movq MMWORD [MMBLOCK(0,1,edi,SIZEOF_JCOEF)], mm0 |
| movq MMWORD [MMBLOCK(1,1,edi,SIZEOF_JCOEF)], mm7 |
| movq MMWORD [MMBLOCK(2,1,edi,SIZEOF_JCOEF)], mm6 |
| movq MMWORD [MMBLOCK(3,1,edi,SIZEOF_JCOEF)], mm1 |
| |
| .nextcolumn: |
| add esi, byte 4*SIZEOF_JCOEF ; coef_block |
| add edx, byte 4*SIZEOF_ISLOW_MULT_TYPE ; quantptr |
| add edi, byte 4*DCTSIZE*SIZEOF_JCOEF ; wsptr |
| dec ecx ; ctr |
| jnz near .columnloop |
| |
| ; ---- Pass 2: process rows from work array, store into output array. |
| |
| mov eax, [original_ebp] |
| lea esi, [workspace] ; JCOEF *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 |
| |
| 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)] |
| |
| ; (Original) |
| ; z1 = (z2 + z3) * 0.541196100; |
| ; tmp2 = z1 + z3 * -1.847759065; |
| ; tmp3 = z1 + z2 * 0.765366865; |
| ; |
| ; (This implementation) |
| ; tmp2 = z2 * 0.541196100 + z3 * (0.541196100 - 1.847759065); |
| ; tmp3 = z2 * (0.541196100 + 0.765366865) + z3 * 0.541196100; |
| |
| movq mm4, mm1 ; mm1=in2=z2 |
| movq mm5, mm1 |
| punpcklwd mm4, mm3 ; mm3=in6=z3 |
| punpckhwd mm5, mm3 |
| movq mm1, mm4 |
| movq mm3, mm5 |
| pmaddwd mm4, [GOTOFF(ebx,PW_F130_F054)] ; mm4=tmp3L |
| pmaddwd mm5, [GOTOFF(ebx,PW_F130_F054)] ; mm5=tmp3H |
| pmaddwd mm1, [GOTOFF(ebx,PW_F054_MF130)] ; mm1=tmp2L |
| pmaddwd mm3, [GOTOFF(ebx,PW_F054_MF130)] ; mm3=tmp2H |
| |
| movq mm6, mm0 |
| paddw mm0, mm2 ; mm0=in0+in4 |
| psubw mm6, mm2 ; mm6=in0-in4 |
| |
| pxor mm7, mm7 |
| pxor mm2, mm2 |
| punpcklwd mm7, mm0 ; mm7=tmp0L |
| punpckhwd mm2, mm0 ; mm2=tmp0H |
| psrad mm7, (16-CONST_BITS) ; psrad mm7,16 & pslld mm7,CONST_BITS |
| psrad mm2, (16-CONST_BITS) ; psrad mm2,16 & pslld mm2,CONST_BITS |
| |
| movq mm0, mm7 |
| paddd mm7, mm4 ; mm7=tmp10L |
| psubd mm0, mm4 ; mm0=tmp13L |
| movq mm4, mm2 |
| paddd mm2, mm5 ; mm2=tmp10H |
| psubd mm4, mm5 ; mm4=tmp13H |
| |
| movq MMWORD [wk(0)], mm7 ; wk(0)=tmp10L |
| movq MMWORD [wk(1)], mm2 ; wk(1)=tmp10H |
| movq MMWORD [wk(2)], mm0 ; wk(2)=tmp13L |
| movq MMWORD [wk(3)], mm4 ; wk(3)=tmp13H |
| |
| pxor mm5, mm5 |
| pxor mm7, mm7 |
| punpcklwd mm5, mm6 ; mm5=tmp1L |
| punpckhwd mm7, mm6 ; mm7=tmp1H |
| psrad mm5, (16-CONST_BITS) ; psrad mm5,16 & pslld mm5,CONST_BITS |
| psrad mm7, (16-CONST_BITS) ; psrad mm7,16 & pslld mm7,CONST_BITS |
| |
| movq mm2, mm5 |
| paddd mm5, mm1 ; mm5=tmp11L |
| psubd mm2, mm1 ; mm2=tmp12L |
| movq mm0, mm7 |
| paddd mm7, mm3 ; mm7=tmp11H |
| psubd mm0, mm3 ; mm0=tmp12H |
| |
| movq MMWORD [wk(4)], mm5 ; wk(4)=tmp11L |
| movq MMWORD [wk(5)], mm7 ; wk(5)=tmp11H |
| movq MMWORD [wk(6)], mm2 ; wk(6)=tmp12L |
| movq MMWORD [wk(7)], mm0 ; wk(7)=tmp12H |
| |
| ; -- Odd part |
| |
| movq mm4, MMWORD [MMBLOCK(1,0,esi,SIZEOF_JCOEF)] |
| movq mm6, MMWORD [MMBLOCK(3,0,esi,SIZEOF_JCOEF)] |
| movq mm1, MMWORD [MMBLOCK(5,0,esi,SIZEOF_JCOEF)] |
| movq mm3, MMWORD [MMBLOCK(7,0,esi,SIZEOF_JCOEF)] |
| |
| movq mm5, mm6 |
| movq mm7, mm4 |
| paddw mm5, mm3 ; mm5=z3 |
| paddw mm7, mm1 ; mm7=z4 |
| |
| ; (Original) |
| ; z5 = (z3 + z4) * 1.175875602; |
| ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644; |
| ; z3 += z5; z4 += z5; |
| ; |
| ; (This implementation) |
| ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602; |
| ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644); |
| |
| movq mm2, mm5 |
| movq mm0, mm5 |
| punpcklwd mm2, mm7 |
| punpckhwd mm0, mm7 |
| movq mm5, mm2 |
| movq mm7, mm0 |
| pmaddwd mm2, [GOTOFF(ebx,PW_MF078_F117)] ; mm2=z3L |
| pmaddwd mm0, [GOTOFF(ebx,PW_MF078_F117)] ; mm0=z3H |
| pmaddwd mm5, [GOTOFF(ebx,PW_F117_F078)] ; mm5=z4L |
| pmaddwd mm7, [GOTOFF(ebx,PW_F117_F078)] ; mm7=z4H |
| |
| movq MMWORD [wk(10)], mm2 ; wk(10)=z3L |
| movq MMWORD [wk(11)], mm0 ; wk(11)=z3H |
| |
| ; (Original) |
| ; z1 = tmp0 + tmp3; z2 = tmp1 + tmp2; |
| ; tmp0 = tmp0 * 0.298631336; tmp1 = tmp1 * 2.053119869; |
| ; tmp2 = tmp2 * 3.072711026; tmp3 = tmp3 * 1.501321110; |
| ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447; |
| ; tmp0 += z1 + z3; tmp1 += z2 + z4; |
| ; tmp2 += z2 + z3; tmp3 += z1 + z4; |
| ; |
| ; (This implementation) |
| ; tmp0 = tmp0 * (0.298631336 - 0.899976223) + tmp3 * -0.899976223; |
| ; tmp1 = tmp1 * (2.053119869 - 2.562915447) + tmp2 * -2.562915447; |
| ; tmp2 = tmp1 * -2.562915447 + tmp2 * (3.072711026 - 2.562915447); |
| ; tmp3 = tmp0 * -0.899976223 + tmp3 * (1.501321110 - 0.899976223); |
| ; tmp0 += z3; tmp1 += z4; |
| ; tmp2 += z3; tmp3 += z4; |
| |
| movq mm2, mm3 |
| movq mm0, mm3 |
| punpcklwd mm2, mm4 |
| punpckhwd mm0, mm4 |
| movq mm3, mm2 |
| movq mm4, mm0 |
| pmaddwd mm2, [GOTOFF(ebx,PW_MF060_MF089)] ; mm2=tmp0L |
| pmaddwd mm0, [GOTOFF(ebx,PW_MF060_MF089)] ; mm0=tmp0H |
| pmaddwd mm3, [GOTOFF(ebx,PW_MF089_F060)] ; mm3=tmp3L |
| pmaddwd mm4, [GOTOFF(ebx,PW_MF089_F060)] ; mm4=tmp3H |
| |
| paddd mm2, MMWORD [wk(10)] ; mm2=tmp0L |
| paddd mm0, MMWORD [wk(11)] ; mm0=tmp0H |
| paddd mm3, mm5 ; mm3=tmp3L |
| paddd mm4, mm7 ; mm4=tmp3H |
| |
| movq MMWORD [wk(8)], mm2 ; wk(8)=tmp0L |
| movq MMWORD [wk(9)], mm0 ; wk(9)=tmp0H |
| |
| movq mm2, mm1 |
| movq mm0, mm1 |
| punpcklwd mm2, mm6 |
| punpckhwd mm0, mm6 |
| movq mm1, mm2 |
| movq mm6, mm0 |
| pmaddwd mm2, [GOTOFF(ebx,PW_MF050_MF256)] ; mm2=tmp1L |
| pmaddwd mm0, [GOTOFF(ebx,PW_MF050_MF256)] ; mm0=tmp1H |
| pmaddwd mm1, [GOTOFF(ebx,PW_MF256_F050)] ; mm1=tmp2L |
| pmaddwd mm6, [GOTOFF(ebx,PW_MF256_F050)] ; mm6=tmp2H |
| |
| paddd mm2, mm5 ; mm2=tmp1L |
| paddd mm0, mm7 ; mm0=tmp1H |
| paddd mm1, MMWORD [wk(10)] ; mm1=tmp2L |
| paddd mm6, MMWORD [wk(11)] ; mm6=tmp2H |
| |
| movq MMWORD [wk(10)], mm2 ; wk(10)=tmp1L |
| movq MMWORD [wk(11)], mm0 ; wk(11)=tmp1H |
| |
| ; -- Final output stage |
| |
| movq mm5, MMWORD [wk(0)] ; mm5=tmp10L |
| movq mm7, MMWORD [wk(1)] ; mm7=tmp10H |
| |
| movq mm2, mm5 |
| movq mm0, mm7 |
| paddd mm5, mm3 ; mm5=data0L |
| paddd mm7, mm4 ; mm7=data0H |
| psubd mm2, mm3 ; mm2=data7L |
| psubd mm0, mm4 ; mm0=data7H |
| |
| movq mm3, [GOTOFF(ebx,PD_DESCALE_P2)] ; mm3=[PD_DESCALE_P2] |
| |
| paddd mm5, mm3 |
| paddd mm7, mm3 |
| psrad mm5, DESCALE_P2 |
| psrad mm7, DESCALE_P2 |
| paddd mm2, mm3 |
| paddd mm0, mm3 |
| psrad mm2, DESCALE_P2 |
| psrad mm0, DESCALE_P2 |
| |
| packssdw mm5, mm7 ; mm5=data0=(00 10 20 30) |
| packssdw mm2, mm0 ; mm2=data7=(07 17 27 37) |
| |
| movq mm4, MMWORD [wk(4)] ; mm4=tmp11L |
| movq mm3, MMWORD [wk(5)] ; mm3=tmp11H |
| |
| movq mm7, mm4 |
| movq mm0, mm3 |
| paddd mm4, mm1 ; mm4=data1L |
| paddd mm3, mm6 ; mm3=data1H |
| psubd mm7, mm1 ; mm7=data6L |
| psubd mm0, mm6 ; mm0=data6H |
| |
| movq mm1, [GOTOFF(ebx,PD_DESCALE_P2)] ; mm1=[PD_DESCALE_P2] |
| |
| paddd mm4, mm1 |
| paddd mm3, mm1 |
| psrad mm4, DESCALE_P2 |
| psrad mm3, DESCALE_P2 |
| paddd mm7, mm1 |
| paddd mm0, mm1 |
| psrad mm7, DESCALE_P2 |
| psrad mm0, DESCALE_P2 |
| |
| packssdw mm4, mm3 ; mm4=data1=(01 11 21 31) |
| packssdw mm7, mm0 ; mm7=data6=(06 16 26 36) |
| |
| packsswb mm5, mm7 ; mm5=(00 10 20 30 06 16 26 36) |
| packsswb mm4, mm2 ; mm4=(01 11 21 31 07 17 27 37) |
| |
| movq mm6, MMWORD [wk(6)] ; mm6=tmp12L |
| movq mm1, MMWORD [wk(7)] ; mm1=tmp12H |
| movq mm3, MMWORD [wk(10)] ; mm3=tmp1L |
| movq mm0, MMWORD [wk(11)] ; mm0=tmp1H |
| |
| movq MMWORD [wk(0)], mm5 ; wk(0)=(00 10 20 30 06 16 26 36) |
| movq MMWORD [wk(1)], mm4 ; wk(1)=(01 11 21 31 07 17 27 37) |
| |
| movq mm7, mm6 |
| movq mm2, mm1 |
| paddd mm6, mm3 ; mm6=data2L |
| paddd mm1, mm0 ; mm1=data2H |
| psubd mm7, mm3 ; mm7=data5L |
| psubd mm2, mm0 ; mm2=data5H |
| |
| movq mm5, [GOTOFF(ebx,PD_DESCALE_P2)] ; mm5=[PD_DESCALE_P2] |
| |
| paddd mm6, mm5 |
| paddd mm1, mm5 |
| psrad mm6, DESCALE_P2 |
| psrad mm1, DESCALE_P2 |
| paddd mm7, mm5 |
| paddd mm2, mm5 |
| psrad mm7, DESCALE_P2 |
| psrad mm2, DESCALE_P2 |
| |
| packssdw mm6, mm1 ; mm6=data2=(02 12 22 32) |
| packssdw mm7, mm2 ; mm7=data5=(05 15 25 35) |
| |
| movq mm4, MMWORD [wk(2)] ; mm4=tmp13L |
| movq mm3, MMWORD [wk(3)] ; mm3=tmp13H |
| movq mm0, MMWORD [wk(8)] ; mm0=tmp0L |
| movq mm5, MMWORD [wk(9)] ; mm5=tmp0H |
| |
| movq mm1, mm4 |
| movq mm2, mm3 |
| paddd mm4, mm0 ; mm4=data3L |
| paddd mm3, mm5 ; mm3=data3H |
| psubd mm1, mm0 ; mm1=data4L |
| psubd mm2, mm5 ; mm2=data4H |
| |
| movq mm0, [GOTOFF(ebx,PD_DESCALE_P2)] ; mm0=[PD_DESCALE_P2] |
| |
| paddd mm4, mm0 |
| paddd mm3, mm0 |
| psrad mm4, DESCALE_P2 |
| psrad mm3, DESCALE_P2 |
| paddd mm1, mm0 |
| paddd mm2, mm0 |
| psrad mm1, DESCALE_P2 |
| psrad mm2, DESCALE_P2 |
| |
| movq mm5, [GOTOFF(ebx,PB_CENTERJSAMP)] ; mm5=[PB_CENTERJSAMP] |
| |
| packssdw mm4, mm3 ; mm4=data3=(03 13 23 33) |
| packssdw mm1, mm2 ; mm1=data4=(04 14 24 34) |
| |
| movq mm0, MMWORD [wk(0)] ; mm0=(00 10 20 30 06 16 26 36) |
| movq mm3, MMWORD [wk(1)] ; mm3=(01 11 21 31 07 17 27 37) |
| |
| packsswb mm6, mm1 ; mm6=(02 12 22 32 04 14 24 34) |
| packsswb mm4, mm7 ; mm4=(03 13 23 33 05 15 25 35) |
| |
| paddb mm0, mm5 |
| paddb mm3, mm5 |
| paddb mm6, mm5 |
| paddb mm4, mm5 |
| |
| movq mm2, mm0 ; transpose coefficients(phase 1) |
| punpcklbw mm0, mm3 ; mm0=(00 01 10 11 20 21 30 31) |
| punpckhbw mm2, mm3 ; mm2=(06 07 16 17 26 27 36 37) |
| movq mm1, mm6 ; transpose coefficients(phase 1) |
| punpcklbw mm6, mm4 ; mm6=(02 03 12 13 22 23 32 33) |
| punpckhbw mm1, mm4 ; mm1=(04 05 14 15 24 25 34 35) |
| |
| movq mm7, mm0 ; transpose coefficients(phase 2) |
| punpcklwd mm0, mm6 ; mm0=(00 01 02 03 10 11 12 13) |
| punpckhwd mm7, mm6 ; mm7=(20 21 22 23 30 31 32 33) |
| movq mm5, mm1 ; transpose coefficients(phase 2) |
| punpcklwd mm1, mm2 ; mm1=(04 05 06 07 14 15 16 17) |
| punpckhwd mm5, mm2 ; mm5=(24 25 26 27 34 35 36 37) |
| |
| movq mm3, mm0 ; transpose coefficients(phase 3) |
| punpckldq mm0, mm1 ; mm0=(00 01 02 03 04 05 06 07) |
| punpckhdq mm3, mm1 ; mm3=(10 11 12 13 14 15 16 17) |
| movq mm4, mm7 ; transpose coefficients(phase 3) |
| punpckldq mm7, mm5 ; mm7=(20 21 22 23 24 25 26 27) |
| punpckhdq mm4, mm5 ; 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], mm3 |
| mov edx, JSAMPROW [edi+2*SIZEOF_JSAMPROW] |
| mov ebx, JSAMPROW [edi+3*SIZEOF_JSAMPROW] |
| movq MMWORD [edx+eax*SIZEOF_JSAMPLE], mm7 |
| movq MMWORD [ebx+eax*SIZEOF_JSAMPLE], mm4 |
| |
| poppic ebx ; restore GOT address |
| |
| add esi, byte 4*SIZEOF_JCOEF ; 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 32 |
