578 lines
22 KiB
NASM
Executable File
578 lines
22 KiB
NASM
Executable File
;
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; Reduced-size IDCT (64-bit SSE2)
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;
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; Copyright 2009 Pierre Ossman <[email protected]> for Cendio AB
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; Copyright (C) 2009, 2016, 2024-2025, D. R. Commander.
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; Copyright (C) 2018, Matthias Räncker.
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; Copyright (C) 2023, Aliaksiej Kandracienka.
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;
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; Based on the 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) or Yasm.
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;
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; This file contains inverse DCT routines that produce reduced-size output:
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; either 4x4 or 2x2 pixels from an 8x8 DCT block. The following code is based
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; directly on the IJG's original jidctred.c; see jidctred.c for more details.
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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 32
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GLOBAL_DATA(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 32
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; --------------------------------------------------------------------------
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SECTION SEG_TEXT
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BITS 64
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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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; r13d = JDIMENSION output_col
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%define wk(i) r15 - (WK_NUM - (i)) * SIZEOF_XMMWORD ; xmmword wk[WK_NUM]
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%define WK_NUM 2
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align 32
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GLOBAL_FUNCTION(jsimd_idct_4x4_sse2)
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EXTN(jsimd_idct_4x4_sse2):
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ENDBR64
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push rbp
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mov rbp, rsp
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push r15
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and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
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; Allocate stack space for wk array. r15 is used to access it.
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mov r15, rsp
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sub rsp, byte (SIZEOF_XMMWORD * WK_NUM)
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COLLECT_ARGS 4
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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
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; xmm1 = [col0 col1] = (00 00 00 00 01 01 01 01)
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pshufd xmm0, xmm0, 0xFA
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; xmm0 = [col2 col3] = (02 02 02 02 03 03 03 03)
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pshufd xmm6, xmm3, 0x50
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; xmm6 = [col4 col5] = (04 04 04 04 05 05 05 05)
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pshufd xmm3, xmm3, 0xFA
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; 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)
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; psrad xmm1, 16 & pslld xmm1, CONST_BITS + 1
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psrad xmm2, (16 - CONST_BITS - 1)
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; 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 rdi, r12 ; (JSAMPROW *)
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mov eax, r13d
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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)
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; 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)
|
|
|
|
movdqa xmm6, xmm4 ; transpose coefficients(phase 2)
|
|
punpckldq xmm4, xmm0 ; xmm4 = (00 01 02 03 10 11 12 13)
|
|
punpckhdq xmm6, xmm0 ; xmm6 = (20 21 22 23 30 31 32 33)
|
|
|
|
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 rdxp, JSAMPROW [rdi + 0 * SIZEOF_JSAMPROW]
|
|
mov rsip, JSAMPROW [rdi + 1 * SIZEOF_JSAMPROW]
|
|
movd XMM_DWORD [rdx + rax * SIZEOF_JSAMPLE], xmm4
|
|
movd XMM_DWORD [rsi + rax * SIZEOF_JSAMPLE], xmm2
|
|
mov rdxp, JSAMPROW [rdi + 2 * SIZEOF_JSAMPROW]
|
|
mov rsip, JSAMPROW [rdi + 3 * SIZEOF_JSAMPROW]
|
|
movd XMM_DWORD [rdx + rax * SIZEOF_JSAMPLE], xmm1
|
|
movd XMM_DWORD [rsi + rax * SIZEOF_JSAMPLE], xmm3
|
|
|
|
UNCOLLECT_ARGS 4
|
|
lea rsp, [rbp - 8]
|
|
pop r15
|
|
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
|
|
; r13d = JDIMENSION output_col
|
|
|
|
align 32
|
|
GLOBAL_FUNCTION(jsimd_idct_2x2_sse2)
|
|
|
|
EXTN(jsimd_idct_2x2_sse2):
|
|
ENDBR64
|
|
push rbp
|
|
mov rbp, rsp
|
|
COLLECT_ARGS 4
|
|
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 eax, r13d
|
|
|
|
; | 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 rdxp, JSAMPROW [rdi + 0 * SIZEOF_JSAMPROW]
|
|
mov rsip, JSAMPROW [rdi + 1 * SIZEOF_JSAMPROW]
|
|
mov word [rdx + rax * SIZEOF_JSAMPLE], bx
|
|
mov word [rsi + rax * SIZEOF_JSAMPLE], cx
|
|
|
|
pop rbx
|
|
UNCOLLECT_ARGS 4
|
|
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
|