621 lines
24 KiB
NASM
621 lines
24 KiB
NASM
;
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; jfdctint.asm - accurate integer FDCT (MMX)
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;
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; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
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; Copyright (C) 2016, 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 slow-but-accurate integer implementation of the
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; forward DCT (Discrete Cosine Transform). The following code is based
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; directly on the IJG's original jfdctint.c; see the jfdctint.c for
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; 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 (CONST_BITS - PASS1_BITS)
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%define DESCALE_P2 (CONST_BITS + PASS1_BITS)
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%if CONST_BITS == 13
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F_0_298 equ 2446 ; FIX(0.298631336)
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F_0_390 equ 3196 ; FIX(0.390180644)
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F_0_541 equ 4433 ; FIX(0.541196100)
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F_0_765 equ 6270 ; FIX(0.765366865)
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F_0_899 equ 7373 ; FIX(0.899976223)
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F_1_175 equ 9633 ; FIX(1.175875602)
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F_1_501 equ 12299 ; FIX(1.501321110)
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F_1_847 equ 15137 ; FIX(1.847759065)
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F_1_961 equ 16069 ; FIX(1.961570560)
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F_2_053 equ 16819 ; FIX(2.053119869)
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F_2_562 equ 20995 ; FIX(2.562915447)
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F_3_072 equ 25172 ; FIX(3.072711026)
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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_298 equ DESCALE( 320652955, 30 - CONST_BITS) ; FIX(0.298631336)
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F_0_390 equ DESCALE( 418953276, 30 - CONST_BITS) ; FIX(0.390180644)
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F_0_541 equ DESCALE( 581104887, 30 - CONST_BITS) ; FIX(0.541196100)
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F_0_765 equ DESCALE( 821806413, 30 - CONST_BITS) ; FIX(0.765366865)
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F_0_899 equ DESCALE( 966342111, 30 - CONST_BITS) ; FIX(0.899976223)
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F_1_175 equ DESCALE(1262586813, 30 - CONST_BITS) ; FIX(1.175875602)
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F_1_501 equ DESCALE(1612031267, 30 - CONST_BITS) ; FIX(1.501321110)
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F_1_847 equ DESCALE(1984016188, 30 - CONST_BITS) ; FIX(1.847759065)
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F_1_961 equ DESCALE(2106220350, 30 - CONST_BITS) ; FIX(1.961570560)
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F_2_053 equ DESCALE(2204520673, 30 - CONST_BITS) ; FIX(2.053119869)
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F_2_562 equ DESCALE(2751909506, 30 - CONST_BITS) ; FIX(2.562915447)
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F_3_072 equ DESCALE(3299298341, 30 - CONST_BITS) ; FIX(3.072711026)
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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_fdct_islow_mmx)
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EXTN(jconst_fdct_islow_mmx):
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PW_F130_F054 times 2 dw (F_0_541 + F_0_765), F_0_541
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PW_F054_MF130 times 2 dw F_0_541, (F_0_541 - F_1_847)
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PW_MF078_F117 times 2 dw (F_1_175 - F_1_961), F_1_175
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PW_F117_F078 times 2 dw F_1_175, (F_1_175 - F_0_390)
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PW_MF060_MF089 times 2 dw (F_0_298 - F_0_899), -F_0_899
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PW_MF089_F060 times 2 dw -F_0_899, (F_1_501 - F_0_899)
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PW_MF050_MF256 times 2 dw (F_2_053 - F_2_562), -F_2_562
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PW_MF256_F050 times 2 dw -F_2_562, (F_3_072 - F_2_562)
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PD_DESCALE_P1 times 2 dd 1 << (DESCALE_P1 - 1)
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PD_DESCALE_P2 times 2 dd 1 << (DESCALE_P2 - 1)
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PW_DESCALE_P2X times 4 dw 1 << (PASS1_BITS - 1)
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alignz 32
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; --------------------------------------------------------------------------
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SECTION SEG_TEXT
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BITS 32
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;
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; Perform the forward DCT on one block of samples.
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;
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; GLOBAL(void)
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; jsimd_fdct_islow_mmx(DCTELEM *data)
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;
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%define data(b) (b) + 8 ; DCTELEM *data
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%define original_ebp ebp + 0
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%define wk(i) ebp - (WK_NUM - (i)) * SIZEOF_MMWORD ; mmword wk[WK_NUM]
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%define WK_NUM 2
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align 32
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GLOBAL_FUNCTION(jsimd_fdct_islow_mmx)
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EXTN(jsimd_fdct_islow_mmx):
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push ebp
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mov eax, esp ; eax = original ebp
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sub esp, byte 4
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and esp, byte (-SIZEOF_MMWORD) ; align to 64 bits
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mov [esp], eax
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mov ebp, esp ; ebp = aligned ebp
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lea esp, [wk(0)]
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pushpic ebx
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; push ecx ; need not be preserved
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; push edx ; need not be preserved
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; push esi ; unused
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; push edi ; unused
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get_GOT ebx ; get GOT address
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; ---- Pass 1: process rows.
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mov edx, POINTER [data(eax)] ; (DCTELEM *)
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mov ecx, DCTSIZE/4
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alignx 16, 7
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.rowloop:
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movq mm0, MMWORD [MMBLOCK(2,0,edx,SIZEOF_DCTELEM)]
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movq mm1, MMWORD [MMBLOCK(3,0,edx,SIZEOF_DCTELEM)]
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movq mm2, MMWORD [MMBLOCK(2,1,edx,SIZEOF_DCTELEM)]
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movq mm3, MMWORD [MMBLOCK(3,1,edx,SIZEOF_DCTELEM)]
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; mm0=(20 21 22 23), mm2=(24 25 26 27)
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; mm1=(30 31 32 33), mm3=(34 35 36 37)
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movq mm4, mm0 ; transpose coefficients(phase 1)
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punpcklwd mm0, mm1 ; mm0=(20 30 21 31)
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punpckhwd mm4, mm1 ; mm4=(22 32 23 33)
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movq mm5, mm2 ; transpose coefficients(phase 1)
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punpcklwd mm2, mm3 ; mm2=(24 34 25 35)
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punpckhwd mm5, mm3 ; mm5=(26 36 27 37)
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movq mm6, MMWORD [MMBLOCK(0,0,edx,SIZEOF_DCTELEM)]
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movq mm7, MMWORD [MMBLOCK(1,0,edx,SIZEOF_DCTELEM)]
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movq mm1, MMWORD [MMBLOCK(0,1,edx,SIZEOF_DCTELEM)]
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movq mm3, MMWORD [MMBLOCK(1,1,edx,SIZEOF_DCTELEM)]
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; mm6=(00 01 02 03), mm1=(04 05 06 07)
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; mm7=(10 11 12 13), mm3=(14 15 16 17)
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movq MMWORD [wk(0)], mm4 ; wk(0)=(22 32 23 33)
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movq MMWORD [wk(1)], mm2 ; wk(1)=(24 34 25 35)
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movq mm4, mm6 ; transpose coefficients(phase 1)
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punpcklwd mm6, mm7 ; mm6=(00 10 01 11)
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punpckhwd mm4, mm7 ; mm4=(02 12 03 13)
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movq mm2, mm1 ; transpose coefficients(phase 1)
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punpcklwd mm1, mm3 ; mm1=(04 14 05 15)
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punpckhwd mm2, mm3 ; mm2=(06 16 07 17)
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movq mm7, mm6 ; transpose coefficients(phase 2)
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punpckldq mm6, mm0 ; mm6=(00 10 20 30)=data0
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punpckhdq mm7, mm0 ; mm7=(01 11 21 31)=data1
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movq mm3, mm2 ; transpose coefficients(phase 2)
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punpckldq mm2, mm5 ; mm2=(06 16 26 36)=data6
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punpckhdq mm3, mm5 ; mm3=(07 17 27 37)=data7
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movq mm0, mm7
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movq mm5, mm6
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psubw mm7, mm2 ; mm7=data1-data6=tmp6
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psubw mm6, mm3 ; mm6=data0-data7=tmp7
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paddw mm0, mm2 ; mm0=data1+data6=tmp1
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paddw mm5, mm3 ; mm5=data0+data7=tmp0
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movq mm2, MMWORD [wk(0)] ; mm2=(22 32 23 33)
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movq mm3, MMWORD [wk(1)] ; mm3=(24 34 25 35)
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movq MMWORD [wk(0)], mm7 ; wk(0)=tmp6
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movq MMWORD [wk(1)], mm6 ; wk(1)=tmp7
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movq mm7, mm4 ; transpose coefficients(phase 2)
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punpckldq mm4, mm2 ; mm4=(02 12 22 32)=data2
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punpckhdq mm7, mm2 ; mm7=(03 13 23 33)=data3
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movq mm6, mm1 ; transpose coefficients(phase 2)
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punpckldq mm1, mm3 ; mm1=(04 14 24 34)=data4
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punpckhdq mm6, mm3 ; mm6=(05 15 25 35)=data5
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movq mm2, mm7
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movq mm3, mm4
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paddw mm7, mm1 ; mm7=data3+data4=tmp3
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paddw mm4, mm6 ; mm4=data2+data5=tmp2
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psubw mm2, mm1 ; mm2=data3-data4=tmp4
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psubw mm3, mm6 ; mm3=data2-data5=tmp5
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; -- Even part
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movq mm1, mm5
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movq mm6, mm0
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paddw mm5, mm7 ; mm5=tmp10
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paddw mm0, mm4 ; mm0=tmp11
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psubw mm1, mm7 ; mm1=tmp13
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psubw mm6, mm4 ; mm6=tmp12
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movq mm7, mm5
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paddw mm5, mm0 ; mm5=tmp10+tmp11
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psubw mm7, mm0 ; mm7=tmp10-tmp11
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psllw mm5, PASS1_BITS ; mm5=data0
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psllw mm7, PASS1_BITS ; mm7=data4
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movq MMWORD [MMBLOCK(0,0,edx,SIZEOF_DCTELEM)], mm5
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movq MMWORD [MMBLOCK(0,1,edx,SIZEOF_DCTELEM)], mm7
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; (Original)
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; z1 = (tmp12 + tmp13) * 0.541196100;
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; data2 = z1 + tmp13 * 0.765366865;
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; data6 = z1 + tmp12 * -1.847759065;
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;
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; (This implementation)
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; data2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100;
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; data6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065);
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movq mm4, mm1 ; mm1=tmp13
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movq mm0, mm1
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punpcklwd mm4, mm6 ; mm6=tmp12
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punpckhwd mm0, mm6
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movq mm1, mm4
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movq mm6, mm0
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pmaddwd mm4, [GOTOFF(ebx,PW_F130_F054)] ; mm4=data2L
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pmaddwd mm0, [GOTOFF(ebx,PW_F130_F054)] ; mm0=data2H
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pmaddwd mm1, [GOTOFF(ebx,PW_F054_MF130)] ; mm1=data6L
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pmaddwd mm6, [GOTOFF(ebx,PW_F054_MF130)] ; mm6=data6H
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paddd mm4, [GOTOFF(ebx,PD_DESCALE_P1)]
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paddd mm0, [GOTOFF(ebx,PD_DESCALE_P1)]
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psrad mm4, DESCALE_P1
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psrad mm0, DESCALE_P1
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paddd mm1, [GOTOFF(ebx,PD_DESCALE_P1)]
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paddd mm6, [GOTOFF(ebx,PD_DESCALE_P1)]
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psrad mm1, DESCALE_P1
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psrad mm6, DESCALE_P1
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packssdw mm4, mm0 ; mm4=data2
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packssdw mm1, mm6 ; mm1=data6
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movq MMWORD [MMBLOCK(2,0,edx,SIZEOF_DCTELEM)], mm4
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movq MMWORD [MMBLOCK(2,1,edx,SIZEOF_DCTELEM)], mm1
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; -- Odd part
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movq mm5, MMWORD [wk(0)] ; mm5=tmp6
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movq mm7, MMWORD [wk(1)] ; mm7=tmp7
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movq mm0, mm2 ; mm2=tmp4
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movq mm6, mm3 ; mm3=tmp5
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paddw mm0, mm5 ; mm0=z3
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paddw mm6, mm7 ; mm6=z4
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; (Original)
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; z5 = (z3 + z4) * 1.175875602;
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; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644;
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; z3 += z5; z4 += z5;
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;
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; (This implementation)
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; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602;
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; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644);
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movq mm4, mm0
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movq mm1, mm0
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punpcklwd mm4, mm6
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punpckhwd mm1, mm6
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movq mm0, mm4
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movq mm6, mm1
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pmaddwd mm4, [GOTOFF(ebx,PW_MF078_F117)] ; mm4=z3L
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pmaddwd mm1, [GOTOFF(ebx,PW_MF078_F117)] ; mm1=z3H
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pmaddwd mm0, [GOTOFF(ebx,PW_F117_F078)] ; mm0=z4L
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pmaddwd mm6, [GOTOFF(ebx,PW_F117_F078)] ; mm6=z4H
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movq MMWORD [wk(0)], mm4 ; wk(0)=z3L
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movq MMWORD [wk(1)], mm1 ; wk(1)=z3H
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; (Original)
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; z1 = tmp4 + tmp7; z2 = tmp5 + tmp6;
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; tmp4 = tmp4 * 0.298631336; tmp5 = tmp5 * 2.053119869;
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; tmp6 = tmp6 * 3.072711026; tmp7 = tmp7 * 1.501321110;
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; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447;
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; data7 = tmp4 + z1 + z3; data5 = tmp5 + z2 + z4;
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; data3 = tmp6 + z2 + z3; data1 = tmp7 + z1 + z4;
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;
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; (This implementation)
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; tmp4 = tmp4 * (0.298631336 - 0.899976223) + tmp7 * -0.899976223;
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; tmp5 = tmp5 * (2.053119869 - 2.562915447) + tmp6 * -2.562915447;
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; tmp6 = tmp5 * -2.562915447 + tmp6 * (3.072711026 - 2.562915447);
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; tmp7 = tmp4 * -0.899976223 + tmp7 * (1.501321110 - 0.899976223);
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; data7 = tmp4 + z3; data5 = tmp5 + z4;
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; data3 = tmp6 + z3; data1 = tmp7 + z4;
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movq mm4, mm2
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movq mm1, mm2
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punpcklwd mm4, mm7
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punpckhwd mm1, mm7
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movq mm2, mm4
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movq mm7, mm1
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pmaddwd mm4, [GOTOFF(ebx,PW_MF060_MF089)] ; mm4=tmp4L
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pmaddwd mm1, [GOTOFF(ebx,PW_MF060_MF089)] ; mm1=tmp4H
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pmaddwd mm2, [GOTOFF(ebx,PW_MF089_F060)] ; mm2=tmp7L
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pmaddwd mm7, [GOTOFF(ebx,PW_MF089_F060)] ; mm7=tmp7H
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paddd mm4, MMWORD [wk(0)] ; mm4=data7L
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paddd mm1, MMWORD [wk(1)] ; mm1=data7H
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paddd mm2, mm0 ; mm2=data1L
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paddd mm7, mm6 ; mm7=data1H
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paddd mm4, [GOTOFF(ebx,PD_DESCALE_P1)]
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paddd mm1, [GOTOFF(ebx,PD_DESCALE_P1)]
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psrad mm4, DESCALE_P1
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psrad mm1, DESCALE_P1
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paddd mm2, [GOTOFF(ebx,PD_DESCALE_P1)]
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paddd mm7, [GOTOFF(ebx,PD_DESCALE_P1)]
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psrad mm2, DESCALE_P1
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psrad mm7, DESCALE_P1
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packssdw mm4, mm1 ; mm4=data7
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packssdw mm2, mm7 ; mm2=data1
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movq MMWORD [MMBLOCK(3,1,edx,SIZEOF_DCTELEM)], mm4
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movq MMWORD [MMBLOCK(1,0,edx,SIZEOF_DCTELEM)], mm2
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movq mm1, mm3
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movq mm7, mm3
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punpcklwd mm1, mm5
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punpckhwd mm7, mm5
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movq mm3, mm1
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movq mm5, mm7
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pmaddwd mm1, [GOTOFF(ebx,PW_MF050_MF256)] ; mm1=tmp5L
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pmaddwd mm7, [GOTOFF(ebx,PW_MF050_MF256)] ; mm7=tmp5H
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pmaddwd mm3, [GOTOFF(ebx,PW_MF256_F050)] ; mm3=tmp6L
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pmaddwd mm5, [GOTOFF(ebx,PW_MF256_F050)] ; mm5=tmp6H
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paddd mm1, mm0 ; mm1=data5L
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paddd mm7, mm6 ; mm7=data5H
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paddd mm3, MMWORD [wk(0)] ; mm3=data3L
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paddd mm5, MMWORD [wk(1)] ; mm5=data3H
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paddd mm1, [GOTOFF(ebx,PD_DESCALE_P1)]
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paddd mm7, [GOTOFF(ebx,PD_DESCALE_P1)]
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psrad mm1, DESCALE_P1
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psrad mm7, DESCALE_P1
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paddd mm3, [GOTOFF(ebx,PD_DESCALE_P1)]
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paddd mm5, [GOTOFF(ebx,PD_DESCALE_P1)]
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psrad mm3, DESCALE_P1
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psrad mm5, DESCALE_P1
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packssdw mm1, mm7 ; mm1=data5
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packssdw mm3, mm5 ; mm3=data3
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movq MMWORD [MMBLOCK(1,1,edx,SIZEOF_DCTELEM)], mm1
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movq MMWORD [MMBLOCK(3,0,edx,SIZEOF_DCTELEM)], mm3
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add edx, byte 4*DCTSIZE*SIZEOF_DCTELEM
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dec ecx
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jnz near .rowloop
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; ---- Pass 2: process columns.
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mov edx, POINTER [data(eax)] ; (DCTELEM *)
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mov ecx, DCTSIZE/4
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alignx 16, 7
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.columnloop:
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movq mm0, MMWORD [MMBLOCK(2,0,edx,SIZEOF_DCTELEM)]
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movq mm1, MMWORD [MMBLOCK(3,0,edx,SIZEOF_DCTELEM)]
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movq mm2, MMWORD [MMBLOCK(6,0,edx,SIZEOF_DCTELEM)]
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movq mm3, MMWORD [MMBLOCK(7,0,edx,SIZEOF_DCTELEM)]
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; mm0=(02 12 22 32), mm2=(42 52 62 72)
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; mm1=(03 13 23 33), mm3=(43 53 63 73)
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movq mm4, mm0 ; transpose coefficients(phase 1)
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punpcklwd mm0, mm1 ; mm0=(02 03 12 13)
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punpckhwd mm4, mm1 ; mm4=(22 23 32 33)
|
|
movq mm5, mm2 ; transpose coefficients(phase 1)
|
|
punpcklwd mm2, mm3 ; mm2=(42 43 52 53)
|
|
punpckhwd mm5, mm3 ; mm5=(62 63 72 73)
|
|
|
|
movq mm6, MMWORD [MMBLOCK(0,0,edx,SIZEOF_DCTELEM)]
|
|
movq mm7, MMWORD [MMBLOCK(1,0,edx,SIZEOF_DCTELEM)]
|
|
movq mm1, MMWORD [MMBLOCK(4,0,edx,SIZEOF_DCTELEM)]
|
|
movq mm3, MMWORD [MMBLOCK(5,0,edx,SIZEOF_DCTELEM)]
|
|
|
|
; mm6=(00 10 20 30), mm1=(40 50 60 70)
|
|
; mm7=(01 11 21 31), mm3=(41 51 61 71)
|
|
|
|
movq MMWORD [wk(0)], mm4 ; wk(0)=(22 23 32 33)
|
|
movq MMWORD [wk(1)], mm2 ; wk(1)=(42 43 52 53)
|
|
|
|
movq mm4, mm6 ; transpose coefficients(phase 1)
|
|
punpcklwd mm6, mm7 ; mm6=(00 01 10 11)
|
|
punpckhwd mm4, mm7 ; mm4=(20 21 30 31)
|
|
movq mm2, mm1 ; transpose coefficients(phase 1)
|
|
punpcklwd mm1, mm3 ; mm1=(40 41 50 51)
|
|
punpckhwd mm2, mm3 ; mm2=(60 61 70 71)
|
|
|
|
movq mm7, mm6 ; transpose coefficients(phase 2)
|
|
punpckldq mm6, mm0 ; mm6=(00 01 02 03)=data0
|
|
punpckhdq mm7, mm0 ; mm7=(10 11 12 13)=data1
|
|
movq mm3, mm2 ; transpose coefficients(phase 2)
|
|
punpckldq mm2, mm5 ; mm2=(60 61 62 63)=data6
|
|
punpckhdq mm3, mm5 ; mm3=(70 71 72 73)=data7
|
|
|
|
movq mm0, mm7
|
|
movq mm5, mm6
|
|
psubw mm7, mm2 ; mm7=data1-data6=tmp6
|
|
psubw mm6, mm3 ; mm6=data0-data7=tmp7
|
|
paddw mm0, mm2 ; mm0=data1+data6=tmp1
|
|
paddw mm5, mm3 ; mm5=data0+data7=tmp0
|
|
|
|
movq mm2, MMWORD [wk(0)] ; mm2=(22 23 32 33)
|
|
movq mm3, MMWORD [wk(1)] ; mm3=(42 43 52 53)
|
|
movq MMWORD [wk(0)], mm7 ; wk(0)=tmp6
|
|
movq MMWORD [wk(1)], mm6 ; wk(1)=tmp7
|
|
|
|
movq mm7, mm4 ; transpose coefficients(phase 2)
|
|
punpckldq mm4, mm2 ; mm4=(20 21 22 23)=data2
|
|
punpckhdq mm7, mm2 ; mm7=(30 31 32 33)=data3
|
|
movq mm6, mm1 ; transpose coefficients(phase 2)
|
|
punpckldq mm1, mm3 ; mm1=(40 41 42 43)=data4
|
|
punpckhdq mm6, mm3 ; mm6=(50 51 52 53)=data5
|
|
|
|
movq mm2, mm7
|
|
movq mm3, mm4
|
|
paddw mm7, mm1 ; mm7=data3+data4=tmp3
|
|
paddw mm4, mm6 ; mm4=data2+data5=tmp2
|
|
psubw mm2, mm1 ; mm2=data3-data4=tmp4
|
|
psubw mm3, mm6 ; mm3=data2-data5=tmp5
|
|
|
|
; -- Even part
|
|
|
|
movq mm1, mm5
|
|
movq mm6, mm0
|
|
paddw mm5, mm7 ; mm5=tmp10
|
|
paddw mm0, mm4 ; mm0=tmp11
|
|
psubw mm1, mm7 ; mm1=tmp13
|
|
psubw mm6, mm4 ; mm6=tmp12
|
|
|
|
movq mm7, mm5
|
|
paddw mm5, mm0 ; mm5=tmp10+tmp11
|
|
psubw mm7, mm0 ; mm7=tmp10-tmp11
|
|
|
|
paddw mm5, [GOTOFF(ebx,PW_DESCALE_P2X)]
|
|
paddw mm7, [GOTOFF(ebx,PW_DESCALE_P2X)]
|
|
psraw mm5, PASS1_BITS ; mm5=data0
|
|
psraw mm7, PASS1_BITS ; mm7=data4
|
|
|
|
movq MMWORD [MMBLOCK(0,0,edx,SIZEOF_DCTELEM)], mm5
|
|
movq MMWORD [MMBLOCK(4,0,edx,SIZEOF_DCTELEM)], mm7
|
|
|
|
; (Original)
|
|
; z1 = (tmp12 + tmp13) * 0.541196100;
|
|
; data2 = z1 + tmp13 * 0.765366865;
|
|
; data6 = z1 + tmp12 * -1.847759065;
|
|
;
|
|
; (This implementation)
|
|
; data2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100;
|
|
; data6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065);
|
|
|
|
movq mm4, mm1 ; mm1=tmp13
|
|
movq mm0, mm1
|
|
punpcklwd mm4, mm6 ; mm6=tmp12
|
|
punpckhwd mm0, mm6
|
|
movq mm1, mm4
|
|
movq mm6, mm0
|
|
pmaddwd mm4, [GOTOFF(ebx,PW_F130_F054)] ; mm4=data2L
|
|
pmaddwd mm0, [GOTOFF(ebx,PW_F130_F054)] ; mm0=data2H
|
|
pmaddwd mm1, [GOTOFF(ebx,PW_F054_MF130)] ; mm1=data6L
|
|
pmaddwd mm6, [GOTOFF(ebx,PW_F054_MF130)] ; mm6=data6H
|
|
|
|
paddd mm4, [GOTOFF(ebx,PD_DESCALE_P2)]
|
|
paddd mm0, [GOTOFF(ebx,PD_DESCALE_P2)]
|
|
psrad mm4, DESCALE_P2
|
|
psrad mm0, DESCALE_P2
|
|
paddd mm1, [GOTOFF(ebx,PD_DESCALE_P2)]
|
|
paddd mm6, [GOTOFF(ebx,PD_DESCALE_P2)]
|
|
psrad mm1, DESCALE_P2
|
|
psrad mm6, DESCALE_P2
|
|
|
|
packssdw mm4, mm0 ; mm4=data2
|
|
packssdw mm1, mm6 ; mm1=data6
|
|
|
|
movq MMWORD [MMBLOCK(2,0,edx,SIZEOF_DCTELEM)], mm4
|
|
movq MMWORD [MMBLOCK(6,0,edx,SIZEOF_DCTELEM)], mm1
|
|
|
|
; -- Odd part
|
|
|
|
movq mm5, MMWORD [wk(0)] ; mm5=tmp6
|
|
movq mm7, MMWORD [wk(1)] ; mm7=tmp7
|
|
|
|
movq mm0, mm2 ; mm2=tmp4
|
|
movq mm6, mm3 ; mm3=tmp5
|
|
paddw mm0, mm5 ; mm0=z3
|
|
paddw mm6, mm7 ; mm6=z4
|
|
|
|
; (Original)
|
|
; z5 = (z3 + z4) * 1.175875602;
|
|
; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644;
|
|
; z3 += z5; z4 += z5;
|
|
;
|
|
; (This implementation)
|
|
; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602;
|
|
; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644);
|
|
|
|
movq mm4, mm0
|
|
movq mm1, mm0
|
|
punpcklwd mm4, mm6
|
|
punpckhwd mm1, mm6
|
|
movq mm0, mm4
|
|
movq mm6, mm1
|
|
pmaddwd mm4, [GOTOFF(ebx,PW_MF078_F117)] ; mm4=z3L
|
|
pmaddwd mm1, [GOTOFF(ebx,PW_MF078_F117)] ; mm1=z3H
|
|
pmaddwd mm0, [GOTOFF(ebx,PW_F117_F078)] ; mm0=z4L
|
|
pmaddwd mm6, [GOTOFF(ebx,PW_F117_F078)] ; mm6=z4H
|
|
|
|
movq MMWORD [wk(0)], mm4 ; wk(0)=z3L
|
|
movq MMWORD [wk(1)], mm1 ; wk(1)=z3H
|
|
|
|
; (Original)
|
|
; z1 = tmp4 + tmp7; z2 = tmp5 + tmp6;
|
|
; tmp4 = tmp4 * 0.298631336; tmp5 = tmp5 * 2.053119869;
|
|
; tmp6 = tmp6 * 3.072711026; tmp7 = tmp7 * 1.501321110;
|
|
; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447;
|
|
; data7 = tmp4 + z1 + z3; data5 = tmp5 + z2 + z4;
|
|
; data3 = tmp6 + z2 + z3; data1 = tmp7 + z1 + z4;
|
|
;
|
|
; (This implementation)
|
|
; tmp4 = tmp4 * (0.298631336 - 0.899976223) + tmp7 * -0.899976223;
|
|
; tmp5 = tmp5 * (2.053119869 - 2.562915447) + tmp6 * -2.562915447;
|
|
; tmp6 = tmp5 * -2.562915447 + tmp6 * (3.072711026 - 2.562915447);
|
|
; tmp7 = tmp4 * -0.899976223 + tmp7 * (1.501321110 - 0.899976223);
|
|
; data7 = tmp4 + z3; data5 = tmp5 + z4;
|
|
; data3 = tmp6 + z3; data1 = tmp7 + z4;
|
|
|
|
movq mm4, mm2
|
|
movq mm1, mm2
|
|
punpcklwd mm4, mm7
|
|
punpckhwd mm1, mm7
|
|
movq mm2, mm4
|
|
movq mm7, mm1
|
|
pmaddwd mm4, [GOTOFF(ebx,PW_MF060_MF089)] ; mm4=tmp4L
|
|
pmaddwd mm1, [GOTOFF(ebx,PW_MF060_MF089)] ; mm1=tmp4H
|
|
pmaddwd mm2, [GOTOFF(ebx,PW_MF089_F060)] ; mm2=tmp7L
|
|
pmaddwd mm7, [GOTOFF(ebx,PW_MF089_F060)] ; mm7=tmp7H
|
|
|
|
paddd mm4, MMWORD [wk(0)] ; mm4=data7L
|
|
paddd mm1, MMWORD [wk(1)] ; mm1=data7H
|
|
paddd mm2, mm0 ; mm2=data1L
|
|
paddd mm7, mm6 ; mm7=data1H
|
|
|
|
paddd mm4, [GOTOFF(ebx,PD_DESCALE_P2)]
|
|
paddd mm1, [GOTOFF(ebx,PD_DESCALE_P2)]
|
|
psrad mm4, DESCALE_P2
|
|
psrad mm1, DESCALE_P2
|
|
paddd mm2, [GOTOFF(ebx,PD_DESCALE_P2)]
|
|
paddd mm7, [GOTOFF(ebx,PD_DESCALE_P2)]
|
|
psrad mm2, DESCALE_P2
|
|
psrad mm7, DESCALE_P2
|
|
|
|
packssdw mm4, mm1 ; mm4=data7
|
|
packssdw mm2, mm7 ; mm2=data1
|
|
|
|
movq MMWORD [MMBLOCK(7,0,edx,SIZEOF_DCTELEM)], mm4
|
|
movq MMWORD [MMBLOCK(1,0,edx,SIZEOF_DCTELEM)], mm2
|
|
|
|
movq mm1, mm3
|
|
movq mm7, mm3
|
|
punpcklwd mm1, mm5
|
|
punpckhwd mm7, mm5
|
|
movq mm3, mm1
|
|
movq mm5, mm7
|
|
pmaddwd mm1, [GOTOFF(ebx,PW_MF050_MF256)] ; mm1=tmp5L
|
|
pmaddwd mm7, [GOTOFF(ebx,PW_MF050_MF256)] ; mm7=tmp5H
|
|
pmaddwd mm3, [GOTOFF(ebx,PW_MF256_F050)] ; mm3=tmp6L
|
|
pmaddwd mm5, [GOTOFF(ebx,PW_MF256_F050)] ; mm5=tmp6H
|
|
|
|
paddd mm1, mm0 ; mm1=data5L
|
|
paddd mm7, mm6 ; mm7=data5H
|
|
paddd mm3, MMWORD [wk(0)] ; mm3=data3L
|
|
paddd mm5, MMWORD [wk(1)] ; mm5=data3H
|
|
|
|
paddd mm1, [GOTOFF(ebx,PD_DESCALE_P2)]
|
|
paddd mm7, [GOTOFF(ebx,PD_DESCALE_P2)]
|
|
psrad mm1, DESCALE_P2
|
|
psrad mm7, DESCALE_P2
|
|
paddd mm3, [GOTOFF(ebx,PD_DESCALE_P2)]
|
|
paddd mm5, [GOTOFF(ebx,PD_DESCALE_P2)]
|
|
psrad mm3, DESCALE_P2
|
|
psrad mm5, DESCALE_P2
|
|
|
|
packssdw mm1, mm7 ; mm1=data5
|
|
packssdw mm3, mm5 ; mm3=data3
|
|
|
|
movq MMWORD [MMBLOCK(5,0,edx,SIZEOF_DCTELEM)], mm1
|
|
movq MMWORD [MMBLOCK(3,0,edx,SIZEOF_DCTELEM)], mm3
|
|
|
|
add edx, byte 4*SIZEOF_DCTELEM
|
|
dec ecx
|
|
jnz near .columnloop
|
|
|
|
emms ; empty MMX state
|
|
|
|
; pop edi ; unused
|
|
; pop esi ; unused
|
|
; pop edx ; need not be preserved
|
|
; pop ecx ; need not be preserved
|
|
poppic ebx
|
|
mov esp, ebp ; esp <- aligned ebp
|
|
pop esp ; esp <- original ebp
|
|
pop ebp
|
|
ret
|
|
|
|
; For some reason, the OS X linker does not honor the request to align the
|
|
; segment unless we do this.
|
|
align 32
|