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483 строки
20 KiB
NASM
483 строки
20 KiB
NASM
;
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; jidctflt.asm - floating-point IDCT (64-bit SSE & SSE2)
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;
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; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
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; Copyright (C) 2009, D. R. Commander.
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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),
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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 a floating-point implementation of the inverse DCT
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; (Discrete Cosine Transform). The following code is based directly on
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; the IJG's original jidctflt.c; see the jidctflt.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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%macro unpcklps2 2 ; %1=(0 1 2 3) / %2=(4 5 6 7) => %1=(0 1 4 5)
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shufps %1,%2,0x44
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%endmacro
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%macro unpckhps2 2 ; %1=(0 1 2 3) / %2=(4 5 6 7) => %1=(2 3 6 7)
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shufps %1,%2,0xEE
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%endmacro
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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_float_sse2)
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EXTN(jconst_idct_float_sse2):
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PD_1_414 times 4 dd 1.414213562373095048801689
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PD_1_847 times 4 dd 1.847759065022573512256366
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PD_1_082 times 4 dd 1.082392200292393968799446
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PD_M2_613 times 4 dd -2.613125929752753055713286
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PD_RNDINT_MAGIC times 4 dd 100663296.0 ; (float)(0x00C00000 << 3)
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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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;
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; GLOBAL(void)
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; jsimd_idct_float_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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%define workspace wk(0)-DCTSIZE2*SIZEOF_FAST_FLOAT
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; FAST_FLOAT workspace[DCTSIZE2]
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align 16
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global EXTN(jsimd_idct_float_sse2)
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EXTN(jsimd_idct_float_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, [workspace]
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collect_args
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push rbx
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; ---- Pass 1: process columns from input, store into work array.
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mov rdx, r10 ; quantptr
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mov rsi, r11 ; inptr
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lea rdi, [workspace] ; FAST_FLOAT *wsptr
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mov rcx, DCTSIZE/4 ; ctr
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.columnloop:
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%ifndef NO_ZERO_COLUMN_TEST_FLOAT_SSE
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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 near .columnDCT
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movq xmm1, XMM_MMWORD [MMBLOCK(1,0,rsi,SIZEOF_JCOEF)]
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movq xmm2, XMM_MMWORD [MMBLOCK(2,0,rsi,SIZEOF_JCOEF)]
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movq xmm3, XMM_MMWORD [MMBLOCK(3,0,rsi,SIZEOF_JCOEF)]
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movq xmm4, XMM_MMWORD [MMBLOCK(4,0,rsi,SIZEOF_JCOEF)]
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movq xmm5, XMM_MMWORD [MMBLOCK(5,0,rsi,SIZEOF_JCOEF)]
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movq xmm6, XMM_MMWORD [MMBLOCK(6,0,rsi,SIZEOF_JCOEF)]
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movq xmm7, XMM_MMWORD [MMBLOCK(7,0,rsi,SIZEOF_JCOEF)]
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por xmm1,xmm2
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por xmm3,xmm4
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por xmm5,xmm6
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por xmm1,xmm3
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por xmm5,xmm7
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por xmm1,xmm5
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packsswb xmm1,xmm1
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movd eax,xmm1
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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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movq xmm0, XMM_MMWORD [MMBLOCK(0,0,rsi,SIZEOF_JCOEF)]
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punpcklwd xmm0,xmm0 ; xmm0=(00 00 01 01 02 02 03 03)
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psrad xmm0,(DWORD_BIT-WORD_BIT) ; xmm0=in0=(00 01 02 03)
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cvtdq2ps xmm0,xmm0 ; xmm0=in0=(00 01 02 03)
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mulps xmm0, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FLOAT_MULT_TYPE)]
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movaps xmm1,xmm0
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movaps xmm2,xmm0
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movaps xmm3,xmm0
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shufps xmm0,xmm0,0x00 ; xmm0=(00 00 00 00)
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shufps xmm1,xmm1,0x55 ; xmm1=(01 01 01 01)
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shufps xmm2,xmm2,0xAA ; xmm2=(02 02 02 02)
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shufps xmm3,xmm3,0xFF ; xmm3=(03 03 03 03)
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movaps XMMWORD [XMMBLOCK(0,0,rdi,SIZEOF_FAST_FLOAT)], xmm0
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movaps XMMWORD [XMMBLOCK(0,1,rdi,SIZEOF_FAST_FLOAT)], xmm0
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movaps XMMWORD [XMMBLOCK(1,0,rdi,SIZEOF_FAST_FLOAT)], xmm1
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movaps XMMWORD [XMMBLOCK(1,1,rdi,SIZEOF_FAST_FLOAT)], xmm1
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movaps XMMWORD [XMMBLOCK(2,0,rdi,SIZEOF_FAST_FLOAT)], xmm2
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movaps XMMWORD [XMMBLOCK(2,1,rdi,SIZEOF_FAST_FLOAT)], xmm2
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movaps XMMWORD [XMMBLOCK(3,0,rdi,SIZEOF_FAST_FLOAT)], xmm3
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movaps XMMWORD [XMMBLOCK(3,1,rdi,SIZEOF_FAST_FLOAT)], xmm3
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jmp near .nextcolumn
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%endif
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.columnDCT:
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; -- Even part
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movq xmm0, XMM_MMWORD [MMBLOCK(0,0,rsi,SIZEOF_JCOEF)]
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movq xmm1, XMM_MMWORD [MMBLOCK(2,0,rsi,SIZEOF_JCOEF)]
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movq xmm2, XMM_MMWORD [MMBLOCK(4,0,rsi,SIZEOF_JCOEF)]
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movq xmm3, XMM_MMWORD [MMBLOCK(6,0,rsi,SIZEOF_JCOEF)]
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punpcklwd xmm0,xmm0 ; xmm0=(00 00 01 01 02 02 03 03)
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punpcklwd xmm1,xmm1 ; xmm1=(20 20 21 21 22 22 23 23)
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psrad xmm0,(DWORD_BIT-WORD_BIT) ; xmm0=in0=(00 01 02 03)
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psrad xmm1,(DWORD_BIT-WORD_BIT) ; xmm1=in2=(20 21 22 23)
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cvtdq2ps xmm0,xmm0 ; xmm0=in0=(00 01 02 03)
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cvtdq2ps xmm1,xmm1 ; xmm1=in2=(20 21 22 23)
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punpcklwd xmm2,xmm2 ; xmm2=(40 40 41 41 42 42 43 43)
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punpcklwd xmm3,xmm3 ; xmm3=(60 60 61 61 62 62 63 63)
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psrad xmm2,(DWORD_BIT-WORD_BIT) ; xmm2=in4=(40 41 42 43)
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psrad xmm3,(DWORD_BIT-WORD_BIT) ; xmm3=in6=(60 61 62 63)
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cvtdq2ps xmm2,xmm2 ; xmm2=in4=(40 41 42 43)
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cvtdq2ps xmm3,xmm3 ; xmm3=in6=(60 61 62 63)
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mulps xmm0, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FLOAT_MULT_TYPE)]
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mulps xmm1, XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_FLOAT_MULT_TYPE)]
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mulps xmm2, XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_FLOAT_MULT_TYPE)]
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mulps xmm3, XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_FLOAT_MULT_TYPE)]
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movaps xmm4,xmm0
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movaps xmm5,xmm1
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subps xmm0,xmm2 ; xmm0=tmp11
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subps xmm1,xmm3
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addps xmm4,xmm2 ; xmm4=tmp10
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addps xmm5,xmm3 ; xmm5=tmp13
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mulps xmm1,[rel PD_1_414]
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subps xmm1,xmm5 ; xmm1=tmp12
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movaps xmm6,xmm4
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movaps xmm7,xmm0
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subps xmm4,xmm5 ; xmm4=tmp3
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subps xmm0,xmm1 ; xmm0=tmp2
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addps xmm6,xmm5 ; xmm6=tmp0
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addps xmm7,xmm1 ; xmm7=tmp1
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movaps XMMWORD [wk(1)], xmm4 ; tmp3
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movaps XMMWORD [wk(0)], xmm0 ; tmp2
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; -- Odd part
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movq xmm2, XMM_MMWORD [MMBLOCK(1,0,rsi,SIZEOF_JCOEF)]
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movq xmm3, XMM_MMWORD [MMBLOCK(3,0,rsi,SIZEOF_JCOEF)]
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movq xmm5, XMM_MMWORD [MMBLOCK(5,0,rsi,SIZEOF_JCOEF)]
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movq xmm1, XMM_MMWORD [MMBLOCK(7,0,rsi,SIZEOF_JCOEF)]
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punpcklwd xmm2,xmm2 ; xmm2=(10 10 11 11 12 12 13 13)
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punpcklwd xmm3,xmm3 ; xmm3=(30 30 31 31 32 32 33 33)
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psrad xmm2,(DWORD_BIT-WORD_BIT) ; xmm2=in1=(10 11 12 13)
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psrad xmm3,(DWORD_BIT-WORD_BIT) ; xmm3=in3=(30 31 32 33)
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cvtdq2ps xmm2,xmm2 ; xmm2=in1=(10 11 12 13)
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cvtdq2ps xmm3,xmm3 ; xmm3=in3=(30 31 32 33)
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punpcklwd xmm5,xmm5 ; xmm5=(50 50 51 51 52 52 53 53)
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punpcklwd xmm1,xmm1 ; xmm1=(70 70 71 71 72 72 73 73)
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psrad xmm5,(DWORD_BIT-WORD_BIT) ; xmm5=in5=(50 51 52 53)
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psrad xmm1,(DWORD_BIT-WORD_BIT) ; xmm1=in7=(70 71 72 73)
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cvtdq2ps xmm5,xmm5 ; xmm5=in5=(50 51 52 53)
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cvtdq2ps xmm1,xmm1 ; xmm1=in7=(70 71 72 73)
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mulps xmm2, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_FLOAT_MULT_TYPE)]
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mulps xmm3, XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_FLOAT_MULT_TYPE)]
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mulps xmm5, XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_FLOAT_MULT_TYPE)]
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mulps xmm1, XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_FLOAT_MULT_TYPE)]
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movaps xmm4,xmm2
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movaps xmm0,xmm5
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addps xmm2,xmm1 ; xmm2=z11
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addps xmm5,xmm3 ; xmm5=z13
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subps xmm4,xmm1 ; xmm4=z12
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subps xmm0,xmm3 ; xmm0=z10
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movaps xmm1,xmm2
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subps xmm2,xmm5
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addps xmm1,xmm5 ; xmm1=tmp7
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mulps xmm2,[rel PD_1_414] ; xmm2=tmp11
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movaps xmm3,xmm0
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addps xmm0,xmm4
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mulps xmm0,[rel PD_1_847] ; xmm0=z5
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mulps xmm3,[rel PD_M2_613] ; xmm3=(z10 * -2.613125930)
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mulps xmm4,[rel PD_1_082] ; xmm4=(z12 * 1.082392200)
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addps xmm3,xmm0 ; xmm3=tmp12
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subps xmm4,xmm0 ; xmm4=tmp10
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; -- Final output stage
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subps xmm3,xmm1 ; xmm3=tmp6
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movaps xmm5,xmm6
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movaps xmm0,xmm7
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addps xmm6,xmm1 ; xmm6=data0=(00 01 02 03)
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addps xmm7,xmm3 ; xmm7=data1=(10 11 12 13)
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subps xmm5,xmm1 ; xmm5=data7=(70 71 72 73)
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subps xmm0,xmm3 ; xmm0=data6=(60 61 62 63)
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subps xmm2,xmm3 ; xmm2=tmp5
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movaps xmm1,xmm6 ; transpose coefficients(phase 1)
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unpcklps xmm6,xmm7 ; xmm6=(00 10 01 11)
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unpckhps xmm1,xmm7 ; xmm1=(02 12 03 13)
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movaps xmm3,xmm0 ; transpose coefficients(phase 1)
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unpcklps xmm0,xmm5 ; xmm0=(60 70 61 71)
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unpckhps xmm3,xmm5 ; xmm3=(62 72 63 73)
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movaps xmm7, XMMWORD [wk(0)] ; xmm7=tmp2
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movaps xmm5, XMMWORD [wk(1)] ; xmm5=tmp3
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movaps XMMWORD [wk(0)], xmm0 ; wk(0)=(60 70 61 71)
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movaps XMMWORD [wk(1)], xmm3 ; wk(1)=(62 72 63 73)
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addps xmm4,xmm2 ; xmm4=tmp4
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movaps xmm0,xmm7
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movaps xmm3,xmm5
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addps xmm7,xmm2 ; xmm7=data2=(20 21 22 23)
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addps xmm5,xmm4 ; xmm5=data4=(40 41 42 43)
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subps xmm0,xmm2 ; xmm0=data5=(50 51 52 53)
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subps xmm3,xmm4 ; xmm3=data3=(30 31 32 33)
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movaps xmm2,xmm7 ; transpose coefficients(phase 1)
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unpcklps xmm7,xmm3 ; xmm7=(20 30 21 31)
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unpckhps xmm2,xmm3 ; xmm2=(22 32 23 33)
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movaps xmm4,xmm5 ; transpose coefficients(phase 1)
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unpcklps xmm5,xmm0 ; xmm5=(40 50 41 51)
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unpckhps xmm4,xmm0 ; xmm4=(42 52 43 53)
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movaps xmm3,xmm6 ; transpose coefficients(phase 2)
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unpcklps2 xmm6,xmm7 ; xmm6=(00 10 20 30)
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unpckhps2 xmm3,xmm7 ; xmm3=(01 11 21 31)
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movaps xmm0,xmm1 ; transpose coefficients(phase 2)
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unpcklps2 xmm1,xmm2 ; xmm1=(02 12 22 32)
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unpckhps2 xmm0,xmm2 ; xmm0=(03 13 23 33)
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movaps xmm7, XMMWORD [wk(0)] ; xmm7=(60 70 61 71)
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movaps xmm2, XMMWORD [wk(1)] ; xmm2=(62 72 63 73)
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movaps XMMWORD [XMMBLOCK(0,0,rdi,SIZEOF_FAST_FLOAT)], xmm6
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movaps XMMWORD [XMMBLOCK(1,0,rdi,SIZEOF_FAST_FLOAT)], xmm3
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movaps XMMWORD [XMMBLOCK(2,0,rdi,SIZEOF_FAST_FLOAT)], xmm1
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movaps XMMWORD [XMMBLOCK(3,0,rdi,SIZEOF_FAST_FLOAT)], xmm0
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movaps xmm6,xmm5 ; transpose coefficients(phase 2)
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unpcklps2 xmm5,xmm7 ; xmm5=(40 50 60 70)
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unpckhps2 xmm6,xmm7 ; xmm6=(41 51 61 71)
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movaps xmm3,xmm4 ; transpose coefficients(phase 2)
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unpcklps2 xmm4,xmm2 ; xmm4=(42 52 62 72)
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unpckhps2 xmm3,xmm2 ; xmm3=(43 53 63 73)
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movaps XMMWORD [XMMBLOCK(0,1,rdi,SIZEOF_FAST_FLOAT)], xmm5
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movaps XMMWORD [XMMBLOCK(1,1,rdi,SIZEOF_FAST_FLOAT)], xmm6
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movaps XMMWORD [XMMBLOCK(2,1,rdi,SIZEOF_FAST_FLOAT)], xmm4
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movaps XMMWORD [XMMBLOCK(3,1,rdi,SIZEOF_FAST_FLOAT)], xmm3
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.nextcolumn:
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add rsi, byte 4*SIZEOF_JCOEF ; coef_block
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add rdx, byte 4*SIZEOF_FLOAT_MULT_TYPE ; quantptr
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add rdi, 4*DCTSIZE*SIZEOF_FAST_FLOAT ; wsptr
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dec rcx ; ctr
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jnz near .columnloop
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; -- Prefetch the next coefficient block
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prefetchnta [rsi + (DCTSIZE2-8)*SIZEOF_JCOEF + 0*32]
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prefetchnta [rsi + (DCTSIZE2-8)*SIZEOF_JCOEF + 1*32]
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prefetchnta [rsi + (DCTSIZE2-8)*SIZEOF_JCOEF + 2*32]
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prefetchnta [rsi + (DCTSIZE2-8)*SIZEOF_JCOEF + 3*32]
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; ---- Pass 2: process rows from work array, store into output array.
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mov rax, [original_rbp]
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lea rsi, [workspace] ; FAST_FLOAT *wsptr
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mov rdi, r12 ; (JSAMPROW *)
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mov eax, r13d
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mov rcx, DCTSIZE/4 ; ctr
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.rowloop:
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; -- Even part
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movaps xmm0, XMMWORD [XMMBLOCK(0,0,rsi,SIZEOF_FAST_FLOAT)]
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movaps xmm1, XMMWORD [XMMBLOCK(2,0,rsi,SIZEOF_FAST_FLOAT)]
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movaps xmm2, XMMWORD [XMMBLOCK(4,0,rsi,SIZEOF_FAST_FLOAT)]
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movaps xmm3, XMMWORD [XMMBLOCK(6,0,rsi,SIZEOF_FAST_FLOAT)]
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movaps xmm4,xmm0
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movaps xmm5,xmm1
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subps xmm0,xmm2 ; xmm0=tmp11
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subps xmm1,xmm3
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addps xmm4,xmm2 ; xmm4=tmp10
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addps xmm5,xmm3 ; xmm5=tmp13
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mulps xmm1,[rel PD_1_414]
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subps xmm1,xmm5 ; xmm1=tmp12
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movaps xmm6,xmm4
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movaps xmm7,xmm0
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subps xmm4,xmm5 ; xmm4=tmp3
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subps xmm0,xmm1 ; xmm0=tmp2
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addps xmm6,xmm5 ; xmm6=tmp0
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addps xmm7,xmm1 ; xmm7=tmp1
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movaps XMMWORD [wk(1)], xmm4 ; tmp3
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movaps XMMWORD [wk(0)], xmm0 ; tmp2
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; -- Odd part
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movaps xmm2, XMMWORD [XMMBLOCK(1,0,rsi,SIZEOF_FAST_FLOAT)]
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movaps xmm3, XMMWORD [XMMBLOCK(3,0,rsi,SIZEOF_FAST_FLOAT)]
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movaps xmm5, XMMWORD [XMMBLOCK(5,0,rsi,SIZEOF_FAST_FLOAT)]
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movaps xmm1, XMMWORD [XMMBLOCK(7,0,rsi,SIZEOF_FAST_FLOAT)]
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movaps xmm4,xmm2
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movaps xmm0,xmm5
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addps xmm2,xmm1 ; xmm2=z11
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addps xmm5,xmm3 ; xmm5=z13
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subps xmm4,xmm1 ; xmm4=z12
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subps xmm0,xmm3 ; xmm0=z10
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movaps xmm1,xmm2
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subps xmm2,xmm5
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addps xmm1,xmm5 ; xmm1=tmp7
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mulps xmm2,[rel PD_1_414] ; xmm2=tmp11
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movaps xmm3,xmm0
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addps xmm0,xmm4
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mulps xmm0,[rel PD_1_847] ; xmm0=z5
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mulps xmm3,[rel PD_M2_613] ; xmm3=(z10 * -2.613125930)
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mulps xmm4,[rel PD_1_082] ; xmm4=(z12 * 1.082392200)
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addps xmm3,xmm0 ; xmm3=tmp12
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subps xmm4,xmm0 ; xmm4=tmp10
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; -- Final output stage
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subps xmm3,xmm1 ; xmm3=tmp6
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movaps xmm5,xmm6
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movaps xmm0,xmm7
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addps xmm6,xmm1 ; xmm6=data0=(00 10 20 30)
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addps xmm7,xmm3 ; xmm7=data1=(01 11 21 31)
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subps xmm5,xmm1 ; xmm5=data7=(07 17 27 37)
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subps xmm0,xmm3 ; xmm0=data6=(06 16 26 36)
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subps xmm2,xmm3 ; xmm2=tmp5
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movaps xmm1,[rel PD_RNDINT_MAGIC] ; xmm1=[rel PD_RNDINT_MAGIC]
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pcmpeqd xmm3,xmm3
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psrld xmm3,WORD_BIT ; xmm3={0xFFFF 0x0000 0xFFFF 0x0000 ..}
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|
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addps xmm6,xmm1 ; xmm6=roundint(data0/8)=(00 ** 10 ** 20 ** 30 **)
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addps xmm7,xmm1 ; xmm7=roundint(data1/8)=(01 ** 11 ** 21 ** 31 **)
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addps xmm0,xmm1 ; xmm0=roundint(data6/8)=(06 ** 16 ** 26 ** 36 **)
|
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addps xmm5,xmm1 ; xmm5=roundint(data7/8)=(07 ** 17 ** 27 ** 37 **)
|
|
|
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pand xmm6,xmm3 ; xmm6=(00 -- 10 -- 20 -- 30 --)
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pslld xmm7,WORD_BIT ; xmm7=(-- 01 -- 11 -- 21 -- 31)
|
|
pand xmm0,xmm3 ; xmm0=(06 -- 16 -- 26 -- 36 --)
|
|
pslld xmm5,WORD_BIT ; xmm5=(-- 07 -- 17 -- 27 -- 37)
|
|
por xmm6,xmm7 ; xmm6=(00 01 10 11 20 21 30 31)
|
|
por xmm0,xmm5 ; xmm0=(06 07 16 17 26 27 36 37)
|
|
|
|
movaps xmm1, XMMWORD [wk(0)] ; xmm1=tmp2
|
|
movaps xmm3, XMMWORD [wk(1)] ; xmm3=tmp3
|
|
|
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addps xmm4,xmm2 ; xmm4=tmp4
|
|
movaps xmm7,xmm1
|
|
movaps xmm5,xmm3
|
|
addps xmm1,xmm2 ; xmm1=data2=(02 12 22 32)
|
|
addps xmm3,xmm4 ; xmm3=data4=(04 14 24 34)
|
|
subps xmm7,xmm2 ; xmm7=data5=(05 15 25 35)
|
|
subps xmm5,xmm4 ; xmm5=data3=(03 13 23 33)
|
|
|
|
movaps xmm2,[rel PD_RNDINT_MAGIC] ; xmm2=[rel PD_RNDINT_MAGIC]
|
|
pcmpeqd xmm4,xmm4
|
|
psrld xmm4,WORD_BIT ; xmm4={0xFFFF 0x0000 0xFFFF 0x0000 ..}
|
|
|
|
addps xmm3,xmm2 ; xmm3=roundint(data4/8)=(04 ** 14 ** 24 ** 34 **)
|
|
addps xmm7,xmm2 ; xmm7=roundint(data5/8)=(05 ** 15 ** 25 ** 35 **)
|
|
addps xmm1,xmm2 ; xmm1=roundint(data2/8)=(02 ** 12 ** 22 ** 32 **)
|
|
addps xmm5,xmm2 ; xmm5=roundint(data3/8)=(03 ** 13 ** 23 ** 33 **)
|
|
|
|
pand xmm3,xmm4 ; xmm3=(04 -- 14 -- 24 -- 34 --)
|
|
pslld xmm7,WORD_BIT ; xmm7=(-- 05 -- 15 -- 25 -- 35)
|
|
pand xmm1,xmm4 ; xmm1=(02 -- 12 -- 22 -- 32 --)
|
|
pslld xmm5,WORD_BIT ; xmm5=(-- 03 -- 13 -- 23 -- 33)
|
|
por xmm3,xmm7 ; xmm3=(04 05 14 15 24 25 34 35)
|
|
por xmm1,xmm5 ; xmm1=(02 03 12 13 22 23 32 33)
|
|
|
|
movdqa xmm2,[rel PB_CENTERJSAMP] ; xmm2=[rel PB_CENTERJSAMP]
|
|
|
|
packsswb xmm6,xmm3 ; xmm6=(00 01 10 11 20 21 30 31 04 05 14 15 24 25 34 35)
|
|
packsswb xmm1,xmm0 ; xmm1=(02 03 12 13 22 23 32 33 06 07 16 17 26 27 36 37)
|
|
paddb xmm6,xmm2
|
|
paddb xmm1,xmm2
|
|
|
|
movdqa xmm4,xmm6 ; transpose coefficients(phase 2)
|
|
punpcklwd xmm6,xmm1 ; xmm6=(00 01 02 03 10 11 12 13 20 21 22 23 30 31 32 33)
|
|
punpckhwd xmm4,xmm1 ; xmm4=(04 05 06 07 14 15 16 17 24 25 26 27 34 35 36 37)
|
|
|
|
movdqa xmm7,xmm6 ; transpose coefficients(phase 3)
|
|
punpckldq xmm6,xmm4 ; xmm6=(00 01 02 03 04 05 06 07 10 11 12 13 14 15 16 17)
|
|
punpckhdq xmm7,xmm4 ; xmm7=(20 21 22 23 24 25 26 27 30 31 32 33 34 35 36 37)
|
|
|
|
pshufd xmm5,xmm6,0x4E ; xmm5=(10 11 12 13 14 15 16 17 00 01 02 03 04 05 06 07)
|
|
pshufd xmm3,xmm7,0x4E ; xmm3=(30 31 32 33 34 35 36 37 20 21 22 23 24 25 26 27)
|
|
|
|
mov rdx, JSAMPROW [rdi+0*SIZEOF_JSAMPROW]
|
|
mov rbx, JSAMPROW [rdi+2*SIZEOF_JSAMPROW]
|
|
movq XMM_MMWORD [rdx+rax*SIZEOF_JSAMPLE], xmm6
|
|
movq XMM_MMWORD [rbx+rax*SIZEOF_JSAMPLE], xmm7
|
|
mov rdx, JSAMPROW [rdi+1*SIZEOF_JSAMPROW]
|
|
mov rbx, JSAMPROW [rdi+3*SIZEOF_JSAMPROW]
|
|
movq XMM_MMWORD [rdx+rax*SIZEOF_JSAMPLE], xmm5
|
|
movq XMM_MMWORD [rbx+rax*SIZEOF_JSAMPLE], xmm3
|
|
|
|
add rsi, byte 4*SIZEOF_FAST_FLOAT ; wsptr
|
|
add rdi, byte 4*SIZEOF_JSAMPROW
|
|
dec rcx ; ctr
|
|
jnz near .rowloop
|
|
|
|
pop rbx
|
|
uncollect_args
|
|
mov rsp,rbp ; rsp <- aligned rbp
|
|
pop rsp ; rsp <- original rbp
|
|
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
|