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577 строки
22 KiB
NASM
577 строки
22 KiB
NASM
;
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; jidctred.asm - reduced-size IDCT (64-bit SSE2)
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;
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; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
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; Copyright 2009 D. R. Commander
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;
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; Based on
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; x86 SIMD extension for IJG JPEG library
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; Copyright (C) 1999-2006, MIYASAKA Masaru.
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; For conditions of distribution and use, see copyright notice in jsimdext.inc
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;
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; This file should be assembled with NASM (Netwide Assembler),
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; can *not* be assembled with Microsoft's MASM or any compatible
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; assembler (including Borland's Turbo Assembler).
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; NASM is available from http://nasm.sourceforge.net/ or
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; http://sourceforge.net/project/showfiles.php?group_id=6208
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;
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; This file contains inverse-DCT routines that produce reduced-size
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; output: either 4x4 or 2x2 pixels from an 8x8 DCT block.
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; The following code is based directly on the IJG's original jidctred.c;
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; see the jidctred.c for more details.
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;
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; [TAB8]
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%include "jsimdext.inc"
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%include "jdct.inc"
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; --------------------------------------------------------------------------
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%define CONST_BITS 13
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%define PASS1_BITS 2
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%define DESCALE_P1_4 (CONST_BITS-PASS1_BITS+1)
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%define DESCALE_P2_4 (CONST_BITS+PASS1_BITS+3+1)
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%define DESCALE_P1_2 (CONST_BITS-PASS1_BITS+2)
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%define DESCALE_P2_2 (CONST_BITS+PASS1_BITS+3+2)
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%if CONST_BITS == 13
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F_0_211 equ 1730 ; FIX(0.211164243)
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F_0_509 equ 4176 ; FIX(0.509795579)
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F_0_601 equ 4926 ; FIX(0.601344887)
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F_0_720 equ 5906 ; FIX(0.720959822)
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F_0_765 equ 6270 ; FIX(0.765366865)
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F_0_850 equ 6967 ; FIX(0.850430095)
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F_0_899 equ 7373 ; FIX(0.899976223)
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F_1_061 equ 8697 ; FIX(1.061594337)
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F_1_272 equ 10426 ; FIX(1.272758580)
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F_1_451 equ 11893 ; FIX(1.451774981)
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F_1_847 equ 15137 ; FIX(1.847759065)
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F_2_172 equ 17799 ; FIX(2.172734803)
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F_2_562 equ 20995 ; FIX(2.562915447)
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F_3_624 equ 29692 ; FIX(3.624509785)
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%else
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; NASM cannot do compile-time arithmetic on floating-point constants.
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%define DESCALE(x,n) (((x)+(1<<((n)-1)))>>(n))
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F_0_211 equ DESCALE( 226735879,30-CONST_BITS) ; FIX(0.211164243)
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F_0_509 equ DESCALE( 547388834,30-CONST_BITS) ; FIX(0.509795579)
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F_0_601 equ DESCALE( 645689155,30-CONST_BITS) ; FIX(0.601344887)
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F_0_720 equ DESCALE( 774124714,30-CONST_BITS) ; FIX(0.720959822)
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F_0_765 equ DESCALE( 821806413,30-CONST_BITS) ; FIX(0.765366865)
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F_0_850 equ DESCALE( 913142361,30-CONST_BITS) ; FIX(0.850430095)
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F_0_899 equ DESCALE( 966342111,30-CONST_BITS) ; FIX(0.899976223)
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F_1_061 equ DESCALE(1139878239,30-CONST_BITS) ; FIX(1.061594337)
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F_1_272 equ DESCALE(1366614119,30-CONST_BITS) ; FIX(1.272758580)
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F_1_451 equ DESCALE(1558831516,30-CONST_BITS) ; FIX(1.451774981)
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F_1_847 equ DESCALE(1984016188,30-CONST_BITS) ; FIX(1.847759065)
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F_2_172 equ DESCALE(2332956230,30-CONST_BITS) ; FIX(2.172734803)
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F_2_562 equ DESCALE(2751909506,30-CONST_BITS) ; FIX(2.562915447)
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F_3_624 equ DESCALE(3891787747,30-CONST_BITS) ; FIX(3.624509785)
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%endif
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; --------------------------------------------------------------------------
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SECTION SEG_CONST
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alignz 16
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global EXTN(jconst_idct_red_sse2)
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EXTN(jconst_idct_red_sse2):
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PW_F184_MF076 times 4 dw F_1_847,-F_0_765
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PW_F256_F089 times 4 dw F_2_562, F_0_899
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PW_F106_MF217 times 4 dw F_1_061,-F_2_172
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PW_MF060_MF050 times 4 dw -F_0_601,-F_0_509
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PW_F145_MF021 times 4 dw F_1_451,-F_0_211
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PW_F362_MF127 times 4 dw F_3_624,-F_1_272
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PW_F085_MF072 times 4 dw F_0_850,-F_0_720
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PD_DESCALE_P1_4 times 4 dd 1 << (DESCALE_P1_4-1)
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PD_DESCALE_P2_4 times 4 dd 1 << (DESCALE_P2_4-1)
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PD_DESCALE_P1_2 times 4 dd 1 << (DESCALE_P1_2-1)
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PD_DESCALE_P2_2 times 4 dd 1 << (DESCALE_P2_2-1)
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PB_CENTERJSAMP times 16 db CENTERJSAMPLE
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alignz 16
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; --------------------------------------------------------------------------
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SECTION SEG_TEXT
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BITS 64
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;
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; Perform dequantization and inverse DCT on one block of coefficients,
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; producing a reduced-size 4x4 output block.
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;
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; GLOBAL(void)
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; jsimd_idct_4x4_sse2 (void * dct_table, JCOEFPTR coef_block,
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; JSAMPARRAY output_buf, JDIMENSION output_col)
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;
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; r10 = void * dct_table
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; r11 = JCOEFPTR coef_block
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; r12 = JSAMPARRAY output_buf
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; r13 = JDIMENSION output_col
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%define original_rbp rbp+0
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%define wk(i) rbp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM]
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%define WK_NUM 2
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align 16
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global EXTN(jsimd_idct_4x4_sse2)
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EXTN(jsimd_idct_4x4_sse2):
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push rbp
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mov rax,rsp ; rax = original rbp
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sub rsp, byte 4
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and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
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mov [rsp],rax
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mov rbp,rsp ; rbp = aligned rbp
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lea rsp, [wk(0)]
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collect_args
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; ---- Pass 1: process columns from input.
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mov rdx, r10 ; quantptr
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mov rsi, r11 ; inptr
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%ifndef NO_ZERO_COLUMN_TEST_4X4_SSE2
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mov eax, DWORD [DWBLOCK(1,0,rsi,SIZEOF_JCOEF)]
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or eax, DWORD [DWBLOCK(2,0,rsi,SIZEOF_JCOEF)]
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jnz short .columnDCT
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movdqa xmm0, XMMWORD [XMMBLOCK(1,0,rsi,SIZEOF_JCOEF)]
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movdqa xmm1, XMMWORD [XMMBLOCK(2,0,rsi,SIZEOF_JCOEF)]
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por xmm0, XMMWORD [XMMBLOCK(3,0,rsi,SIZEOF_JCOEF)]
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por xmm1, XMMWORD [XMMBLOCK(5,0,rsi,SIZEOF_JCOEF)]
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por xmm0, XMMWORD [XMMBLOCK(6,0,rsi,SIZEOF_JCOEF)]
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por xmm1, XMMWORD [XMMBLOCK(7,0,rsi,SIZEOF_JCOEF)]
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por xmm0,xmm1
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packsswb xmm0,xmm0
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packsswb xmm0,xmm0
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movd eax,xmm0
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test rax,rax
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jnz short .columnDCT
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; -- AC terms all zero
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movdqa xmm0, XMMWORD [XMMBLOCK(0,0,rsi,SIZEOF_JCOEF)]
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pmullw xmm0, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_ISLOW_MULT_TYPE)]
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psllw xmm0,PASS1_BITS
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movdqa xmm3,xmm0 ; xmm0=in0=(00 01 02 03 04 05 06 07)
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punpcklwd xmm0,xmm0 ; xmm0=(00 00 01 01 02 02 03 03)
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punpckhwd xmm3,xmm3 ; xmm3=(04 04 05 05 06 06 07 07)
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pshufd xmm1,xmm0,0x50 ; xmm1=[col0 col1]=(00 00 00 00 01 01 01 01)
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pshufd xmm0,xmm0,0xFA ; xmm0=[col2 col3]=(02 02 02 02 03 03 03 03)
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pshufd xmm6,xmm3,0x50 ; xmm6=[col4 col5]=(04 04 04 04 05 05 05 05)
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pshufd xmm3,xmm3,0xFA ; xmm3=[col6 col7]=(06 06 06 06 07 07 07 07)
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jmp near .column_end
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%endif
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.columnDCT:
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; -- Odd part
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movdqa xmm0, XMMWORD [XMMBLOCK(1,0,rsi,SIZEOF_JCOEF)]
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movdqa xmm1, XMMWORD [XMMBLOCK(3,0,rsi,SIZEOF_JCOEF)]
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pmullw xmm0, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_ISLOW_MULT_TYPE)]
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pmullw xmm1, XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_ISLOW_MULT_TYPE)]
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movdqa xmm2, XMMWORD [XMMBLOCK(5,0,rsi,SIZEOF_JCOEF)]
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movdqa xmm3, XMMWORD [XMMBLOCK(7,0,rsi,SIZEOF_JCOEF)]
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pmullw xmm2, XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_ISLOW_MULT_TYPE)]
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pmullw xmm3, XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_ISLOW_MULT_TYPE)]
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movdqa xmm4,xmm0
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movdqa xmm5,xmm0
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punpcklwd xmm4,xmm1
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punpckhwd xmm5,xmm1
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movdqa xmm0,xmm4
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movdqa xmm1,xmm5
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pmaddwd xmm4,[rel PW_F256_F089] ; xmm4=(tmp2L)
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pmaddwd xmm5,[rel PW_F256_F089] ; xmm5=(tmp2H)
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pmaddwd xmm0,[rel PW_F106_MF217] ; xmm0=(tmp0L)
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pmaddwd xmm1,[rel PW_F106_MF217] ; xmm1=(tmp0H)
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movdqa xmm6,xmm2
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movdqa xmm7,xmm2
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punpcklwd xmm6,xmm3
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punpckhwd xmm7,xmm3
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movdqa xmm2,xmm6
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movdqa xmm3,xmm7
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pmaddwd xmm6,[rel PW_MF060_MF050] ; xmm6=(tmp2L)
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pmaddwd xmm7,[rel PW_MF060_MF050] ; xmm7=(tmp2H)
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pmaddwd xmm2,[rel PW_F145_MF021] ; xmm2=(tmp0L)
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pmaddwd xmm3,[rel PW_F145_MF021] ; xmm3=(tmp0H)
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paddd xmm6,xmm4 ; xmm6=tmp2L
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paddd xmm7,xmm5 ; xmm7=tmp2H
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paddd xmm2,xmm0 ; xmm2=tmp0L
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paddd xmm3,xmm1 ; xmm3=tmp0H
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movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=tmp0L
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movdqa XMMWORD [wk(1)], xmm3 ; wk(1)=tmp0H
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; -- Even part
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movdqa xmm4, XMMWORD [XMMBLOCK(0,0,rsi,SIZEOF_JCOEF)]
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movdqa xmm5, XMMWORD [XMMBLOCK(2,0,rsi,SIZEOF_JCOEF)]
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movdqa xmm0, XMMWORD [XMMBLOCK(6,0,rsi,SIZEOF_JCOEF)]
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pmullw xmm4, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_ISLOW_MULT_TYPE)]
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pmullw xmm5, XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_ISLOW_MULT_TYPE)]
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pmullw xmm0, XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_ISLOW_MULT_TYPE)]
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pxor xmm1,xmm1
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pxor xmm2,xmm2
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punpcklwd xmm1,xmm4 ; xmm1=tmp0L
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punpckhwd xmm2,xmm4 ; xmm2=tmp0H
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psrad xmm1,(16-CONST_BITS-1) ; psrad xmm1,16 & pslld xmm1,CONST_BITS+1
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psrad xmm2,(16-CONST_BITS-1) ; psrad xmm2,16 & pslld xmm2,CONST_BITS+1
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movdqa xmm3,xmm5 ; xmm5=in2=z2
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punpcklwd xmm5,xmm0 ; xmm0=in6=z3
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punpckhwd xmm3,xmm0
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pmaddwd xmm5,[rel PW_F184_MF076] ; xmm5=tmp2L
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pmaddwd xmm3,[rel PW_F184_MF076] ; xmm3=tmp2H
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movdqa xmm4,xmm1
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movdqa xmm0,xmm2
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paddd xmm1,xmm5 ; xmm1=tmp10L
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paddd xmm2,xmm3 ; xmm2=tmp10H
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psubd xmm4,xmm5 ; xmm4=tmp12L
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psubd xmm0,xmm3 ; xmm0=tmp12H
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; -- Final output stage
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movdqa xmm5,xmm1
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movdqa xmm3,xmm2
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paddd xmm1,xmm6 ; xmm1=data0L
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paddd xmm2,xmm7 ; xmm2=data0H
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psubd xmm5,xmm6 ; xmm5=data3L
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psubd xmm3,xmm7 ; xmm3=data3H
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movdqa xmm6,[rel PD_DESCALE_P1_4] ; xmm6=[rel PD_DESCALE_P1_4]
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paddd xmm1,xmm6
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paddd xmm2,xmm6
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psrad xmm1,DESCALE_P1_4
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psrad xmm2,DESCALE_P1_4
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paddd xmm5,xmm6
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paddd xmm3,xmm6
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psrad xmm5,DESCALE_P1_4
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psrad xmm3,DESCALE_P1_4
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packssdw xmm1,xmm2 ; xmm1=data0=(00 01 02 03 04 05 06 07)
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packssdw xmm5,xmm3 ; xmm5=data3=(30 31 32 33 34 35 36 37)
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movdqa xmm7, XMMWORD [wk(0)] ; xmm7=tmp0L
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movdqa xmm6, XMMWORD [wk(1)] ; xmm6=tmp0H
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movdqa xmm2,xmm4
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movdqa xmm3,xmm0
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paddd xmm4,xmm7 ; xmm4=data1L
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paddd xmm0,xmm6 ; xmm0=data1H
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psubd xmm2,xmm7 ; xmm2=data2L
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psubd xmm3,xmm6 ; xmm3=data2H
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movdqa xmm7,[rel PD_DESCALE_P1_4] ; xmm7=[rel PD_DESCALE_P1_4]
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paddd xmm4,xmm7
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paddd xmm0,xmm7
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psrad xmm4,DESCALE_P1_4
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psrad xmm0,DESCALE_P1_4
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paddd xmm2,xmm7
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paddd xmm3,xmm7
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psrad xmm2,DESCALE_P1_4
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psrad xmm3,DESCALE_P1_4
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packssdw xmm4,xmm0 ; xmm4=data1=(10 11 12 13 14 15 16 17)
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packssdw xmm2,xmm3 ; xmm2=data2=(20 21 22 23 24 25 26 27)
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movdqa xmm6,xmm1 ; transpose coefficients(phase 1)
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punpcklwd xmm1,xmm4 ; xmm1=(00 10 01 11 02 12 03 13)
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punpckhwd xmm6,xmm4 ; xmm6=(04 14 05 15 06 16 07 17)
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movdqa xmm7,xmm2 ; transpose coefficients(phase 1)
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punpcklwd xmm2,xmm5 ; xmm2=(20 30 21 31 22 32 23 33)
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punpckhwd xmm7,xmm5 ; xmm7=(24 34 25 35 26 36 27 37)
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movdqa xmm0,xmm1 ; transpose coefficients(phase 2)
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punpckldq xmm1,xmm2 ; xmm1=[col0 col1]=(00 10 20 30 01 11 21 31)
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punpckhdq xmm0,xmm2 ; xmm0=[col2 col3]=(02 12 22 32 03 13 23 33)
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movdqa xmm3,xmm6 ; transpose coefficients(phase 2)
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punpckldq xmm6,xmm7 ; xmm6=[col4 col5]=(04 14 24 34 05 15 25 35)
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punpckhdq xmm3,xmm7 ; xmm3=[col6 col7]=(06 16 26 36 07 17 27 37)
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.column_end:
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; -- Prefetch the next coefficient block
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prefetchnta [rsi + DCTSIZE2*SIZEOF_JCOEF + 0*32]
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prefetchnta [rsi + DCTSIZE2*SIZEOF_JCOEF + 1*32]
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prefetchnta [rsi + DCTSIZE2*SIZEOF_JCOEF + 2*32]
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prefetchnta [rsi + DCTSIZE2*SIZEOF_JCOEF + 3*32]
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; ---- Pass 2: process rows, store into output array.
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mov rax, [original_rbp]
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mov rdi, r12 ; (JSAMPROW *)
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mov rax, r13
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; -- Even part
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pxor xmm4,xmm4
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punpcklwd xmm4,xmm1 ; xmm4=tmp0
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psrad xmm4,(16-CONST_BITS-1) ; psrad xmm4,16 & pslld xmm4,CONST_BITS+1
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; -- Odd part
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punpckhwd xmm1,xmm0
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punpckhwd xmm6,xmm3
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movdqa xmm5,xmm1
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movdqa xmm2,xmm6
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pmaddwd xmm1,[rel PW_F256_F089] ; xmm1=(tmp2)
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pmaddwd xmm6,[rel PW_MF060_MF050] ; xmm6=(tmp2)
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pmaddwd xmm5,[rel PW_F106_MF217] ; xmm5=(tmp0)
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pmaddwd xmm2,[rel PW_F145_MF021] ; xmm2=(tmp0)
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paddd xmm6,xmm1 ; xmm6=tmp2
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paddd xmm2,xmm5 ; xmm2=tmp0
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; -- Even part
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punpcklwd xmm0,xmm3
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pmaddwd xmm0,[rel PW_F184_MF076] ; xmm0=tmp2
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movdqa xmm7,xmm4
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paddd xmm4,xmm0 ; xmm4=tmp10
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psubd xmm7,xmm0 ; xmm7=tmp12
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; -- Final output stage
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movdqa xmm1,[rel PD_DESCALE_P2_4] ; xmm1=[rel PD_DESCALE_P2_4]
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movdqa xmm5,xmm4
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movdqa xmm3,xmm7
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paddd xmm4,xmm6 ; xmm4=data0=(00 10 20 30)
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paddd xmm7,xmm2 ; xmm7=data1=(01 11 21 31)
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psubd xmm5,xmm6 ; xmm5=data3=(03 13 23 33)
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psubd xmm3,xmm2 ; xmm3=data2=(02 12 22 32)
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paddd xmm4,xmm1
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paddd xmm7,xmm1
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psrad xmm4,DESCALE_P2_4
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psrad xmm7,DESCALE_P2_4
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paddd xmm5,xmm1
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paddd xmm3,xmm1
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psrad xmm5,DESCALE_P2_4
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psrad xmm3,DESCALE_P2_4
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packssdw xmm4,xmm3 ; xmm4=(00 10 20 30 02 12 22 32)
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packssdw xmm7,xmm5 ; xmm7=(01 11 21 31 03 13 23 33)
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movdqa xmm0,xmm4 ; transpose coefficients(phase 1)
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punpcklwd xmm4,xmm7 ; xmm4=(00 01 10 11 20 21 30 31)
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punpckhwd xmm0,xmm7 ; xmm0=(02 03 12 13 22 23 32 33)
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movdqa xmm6,xmm4 ; transpose coefficients(phase 2)
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punpckldq xmm4,xmm0 ; xmm4=(00 01 02 03 10 11 12 13)
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punpckhdq xmm6,xmm0 ; xmm6=(20 21 22 23 30 31 32 33)
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packsswb xmm4,xmm6 ; xmm4=(00 01 02 03 10 11 12 13 20 ..)
|
|
paddb xmm4,[rel PB_CENTERJSAMP]
|
|
|
|
pshufd xmm2,xmm4,0x39 ; xmm2=(10 11 12 13 20 21 22 23 30 ..)
|
|
pshufd xmm1,xmm4,0x4E ; xmm1=(20 21 22 23 30 31 32 33 00 ..)
|
|
pshufd xmm3,xmm4,0x93 ; xmm3=(30 31 32 33 00 01 02 03 10 ..)
|
|
|
|
mov rdx, JSAMPROW [rdi+0*SIZEOF_JSAMPROW]
|
|
mov rsi, JSAMPROW [rdi+1*SIZEOF_JSAMPROW]
|
|
movd XMM_DWORD [rdx+rax*SIZEOF_JSAMPLE], xmm4
|
|
movd XMM_DWORD [rsi+rax*SIZEOF_JSAMPLE], xmm2
|
|
mov rdx, JSAMPROW [rdi+2*SIZEOF_JSAMPROW]
|
|
mov rsi, JSAMPROW [rdi+3*SIZEOF_JSAMPROW]
|
|
movd XMM_DWORD [rdx+rax*SIZEOF_JSAMPLE], xmm1
|
|
movd XMM_DWORD [rsi+rax*SIZEOF_JSAMPLE], xmm3
|
|
|
|
uncollect_args
|
|
mov rsp,rbp ; rsp <- aligned rbp
|
|
pop rsp ; rsp <- original rbp
|
|
pop rbp
|
|
ret
|
|
|
|
|
|
; --------------------------------------------------------------------------
|
|
;
|
|
; Perform dequantization and inverse DCT on one block of coefficients,
|
|
; producing a reduced-size 2x2 output block.
|
|
;
|
|
; GLOBAL(void)
|
|
; jsimd_idct_2x2_sse2 (void * dct_table, JCOEFPTR coef_block,
|
|
; JSAMPARRAY output_buf, JDIMENSION output_col)
|
|
;
|
|
|
|
; r10 = void * dct_table
|
|
; r11 = JCOEFPTR coef_block
|
|
; r12 = JSAMPARRAY output_buf
|
|
; r13 = JDIMENSION output_col
|
|
|
|
align 16
|
|
global EXTN(jsimd_idct_2x2_sse2)
|
|
|
|
EXTN(jsimd_idct_2x2_sse2):
|
|
push rbp
|
|
mov rax,rsp
|
|
mov rbp,rsp
|
|
collect_args
|
|
push rbx
|
|
|
|
; ---- Pass 1: process columns from input.
|
|
|
|
mov rdx, r10 ; quantptr
|
|
mov rsi, r11 ; inptr
|
|
|
|
; | input: | result: |
|
|
; | 00 01 ** 03 ** 05 ** 07 | |
|
|
; | 10 11 ** 13 ** 15 ** 17 | |
|
|
; | ** ** ** ** ** ** ** ** | |
|
|
; | 30 31 ** 33 ** 35 ** 37 | A0 A1 A3 A5 A7 |
|
|
; | ** ** ** ** ** ** ** ** | B0 B1 B3 B5 B7 |
|
|
; | 50 51 ** 53 ** 55 ** 57 | |
|
|
; | ** ** ** ** ** ** ** ** | |
|
|
; | 70 71 ** 73 ** 75 ** 77 | |
|
|
|
|
; -- Odd part
|
|
|
|
movdqa xmm0, XMMWORD [XMMBLOCK(1,0,rsi,SIZEOF_JCOEF)]
|
|
movdqa xmm1, XMMWORD [XMMBLOCK(3,0,rsi,SIZEOF_JCOEF)]
|
|
pmullw xmm0, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_ISLOW_MULT_TYPE)]
|
|
pmullw xmm1, XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_ISLOW_MULT_TYPE)]
|
|
movdqa xmm2, XMMWORD [XMMBLOCK(5,0,rsi,SIZEOF_JCOEF)]
|
|
movdqa xmm3, XMMWORD [XMMBLOCK(7,0,rsi,SIZEOF_JCOEF)]
|
|
pmullw xmm2, XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_ISLOW_MULT_TYPE)]
|
|
pmullw xmm3, XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_ISLOW_MULT_TYPE)]
|
|
|
|
; xmm0=(10 11 ** 13 ** 15 ** 17), xmm1=(30 31 ** 33 ** 35 ** 37)
|
|
; xmm2=(50 51 ** 53 ** 55 ** 57), xmm3=(70 71 ** 73 ** 75 ** 77)
|
|
|
|
pcmpeqd xmm7,xmm7
|
|
pslld xmm7,WORD_BIT ; xmm7={0x0000 0xFFFF 0x0000 0xFFFF ..}
|
|
|
|
movdqa xmm4,xmm0 ; xmm4=(10 11 ** 13 ** 15 ** 17)
|
|
movdqa xmm5,xmm2 ; xmm5=(50 51 ** 53 ** 55 ** 57)
|
|
punpcklwd xmm4,xmm1 ; xmm4=(10 30 11 31 ** ** 13 33)
|
|
punpcklwd xmm5,xmm3 ; xmm5=(50 70 51 71 ** ** 53 73)
|
|
pmaddwd xmm4,[rel PW_F362_MF127]
|
|
pmaddwd xmm5,[rel PW_F085_MF072]
|
|
|
|
psrld xmm0,WORD_BIT ; xmm0=(11 -- 13 -- 15 -- 17 --)
|
|
pand xmm1,xmm7 ; xmm1=(-- 31 -- 33 -- 35 -- 37)
|
|
psrld xmm2,WORD_BIT ; xmm2=(51 -- 53 -- 55 -- 57 --)
|
|
pand xmm3,xmm7 ; xmm3=(-- 71 -- 73 -- 75 -- 77)
|
|
por xmm0,xmm1 ; xmm0=(11 31 13 33 15 35 17 37)
|
|
por xmm2,xmm3 ; xmm2=(51 71 53 73 55 75 57 77)
|
|
pmaddwd xmm0,[rel PW_F362_MF127]
|
|
pmaddwd xmm2,[rel PW_F085_MF072]
|
|
|
|
paddd xmm4,xmm5 ; xmm4=tmp0[col0 col1 **** col3]
|
|
paddd xmm0,xmm2 ; xmm0=tmp0[col1 col3 col5 col7]
|
|
|
|
; -- Even part
|
|
|
|
movdqa xmm6, XMMWORD [XMMBLOCK(0,0,rsi,SIZEOF_JCOEF)]
|
|
pmullw xmm6, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_ISLOW_MULT_TYPE)]
|
|
|
|
; xmm6=(00 01 ** 03 ** 05 ** 07)
|
|
|
|
movdqa xmm1,xmm6 ; xmm1=(00 01 ** 03 ** 05 ** 07)
|
|
pslld xmm6,WORD_BIT ; xmm6=(-- 00 -- ** -- ** -- **)
|
|
pand xmm1,xmm7 ; xmm1=(-- 01 -- 03 -- 05 -- 07)
|
|
psrad xmm6,(WORD_BIT-CONST_BITS-2) ; xmm6=tmp10[col0 **** **** ****]
|
|
psrad xmm1,(WORD_BIT-CONST_BITS-2) ; xmm1=tmp10[col1 col3 col5 col7]
|
|
|
|
; -- Final output stage
|
|
|
|
movdqa xmm3,xmm6
|
|
movdqa xmm5,xmm1
|
|
paddd xmm6,xmm4 ; xmm6=data0[col0 **** **** ****]=(A0 ** ** **)
|
|
paddd xmm1,xmm0 ; xmm1=data0[col1 col3 col5 col7]=(A1 A3 A5 A7)
|
|
psubd xmm3,xmm4 ; xmm3=data1[col0 **** **** ****]=(B0 ** ** **)
|
|
psubd xmm5,xmm0 ; xmm5=data1[col1 col3 col5 col7]=(B1 B3 B5 B7)
|
|
|
|
movdqa xmm2,[rel PD_DESCALE_P1_2] ; xmm2=[rel PD_DESCALE_P1_2]
|
|
|
|
punpckldq xmm6,xmm3 ; xmm6=(A0 B0 ** **)
|
|
|
|
movdqa xmm7,xmm1
|
|
punpcklqdq xmm1,xmm5 ; xmm1=(A1 A3 B1 B3)
|
|
punpckhqdq xmm7,xmm5 ; xmm7=(A5 A7 B5 B7)
|
|
|
|
paddd xmm6,xmm2
|
|
psrad xmm6,DESCALE_P1_2
|
|
|
|
paddd xmm1,xmm2
|
|
paddd xmm7,xmm2
|
|
psrad xmm1,DESCALE_P1_2
|
|
psrad xmm7,DESCALE_P1_2
|
|
|
|
; -- Prefetch the next coefficient block
|
|
|
|
prefetchnta [rsi + DCTSIZE2*SIZEOF_JCOEF + 0*32]
|
|
prefetchnta [rsi + DCTSIZE2*SIZEOF_JCOEF + 1*32]
|
|
prefetchnta [rsi + DCTSIZE2*SIZEOF_JCOEF + 2*32]
|
|
prefetchnta [rsi + DCTSIZE2*SIZEOF_JCOEF + 3*32]
|
|
|
|
; ---- Pass 2: process rows, store into output array.
|
|
|
|
mov rdi, r12 ; (JSAMPROW *)
|
|
mov rax, r13
|
|
|
|
; | input:| result:|
|
|
; | A0 B0 | |
|
|
; | A1 B1 | C0 C1 |
|
|
; | A3 B3 | D0 D1 |
|
|
; | A5 B5 | |
|
|
; | A7 B7 | |
|
|
|
|
; -- Odd part
|
|
|
|
packssdw xmm1,xmm1 ; xmm1=(A1 A3 B1 B3 A1 A3 B1 B3)
|
|
packssdw xmm7,xmm7 ; xmm7=(A5 A7 B5 B7 A5 A7 B5 B7)
|
|
pmaddwd xmm1,[rel PW_F362_MF127]
|
|
pmaddwd xmm7,[rel PW_F085_MF072]
|
|
|
|
paddd xmm1,xmm7 ; xmm1=tmp0[row0 row1 row0 row1]
|
|
|
|
; -- Even part
|
|
|
|
pslld xmm6,(CONST_BITS+2) ; xmm6=tmp10[row0 row1 **** ****]
|
|
|
|
; -- Final output stage
|
|
|
|
movdqa xmm4,xmm6
|
|
paddd xmm6,xmm1 ; xmm6=data0[row0 row1 **** ****]=(C0 C1 ** **)
|
|
psubd xmm4,xmm1 ; xmm4=data1[row0 row1 **** ****]=(D0 D1 ** **)
|
|
|
|
punpckldq xmm6,xmm4 ; xmm6=(C0 D0 C1 D1)
|
|
|
|
paddd xmm6,[rel PD_DESCALE_P2_2]
|
|
psrad xmm6,DESCALE_P2_2
|
|
|
|
packssdw xmm6,xmm6 ; xmm6=(C0 D0 C1 D1 C0 D0 C1 D1)
|
|
packsswb xmm6,xmm6 ; xmm6=(C0 D0 C1 D1 C0 D0 C1 D1 ..)
|
|
paddb xmm6,[rel PB_CENTERJSAMP]
|
|
|
|
pextrw ebx,xmm6,0x00 ; ebx=(C0 D0 -- --)
|
|
pextrw ecx,xmm6,0x01 ; ecx=(C1 D1 -- --)
|
|
|
|
mov rdx, JSAMPROW [rdi+0*SIZEOF_JSAMPROW]
|
|
mov rsi, JSAMPROW [rdi+1*SIZEOF_JSAMPROW]
|
|
mov WORD [rdx+rax*SIZEOF_JSAMPLE], bx
|
|
mov WORD [rsi+rax*SIZEOF_JSAMPLE], cx
|
|
|
|
pop rbx
|
|
uncollect_args
|
|
pop rbp
|
|
ret
|
|
|
|
; For some reason, the OS X linker does not honor the request to align the
|
|
; segment unless we do this.
|
|
align 16
|