skl_dct_sse.asm
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ASM
1,146 行
;/********************************************************
; * Some code. Copyright (C) 2003 by Pascal Massimino. *
; * All Rights Reserved. (http://skal.planet-d.net) *
; * For Educational/Academic use ONLY. See 'LICENSE.TXT'.*
; ********************************************************/
; [BITS 32]
%include "skl_nasm.h"
;//////////////////////////////////////////////////////////////////////
%macro cfastcall 1
global @%1@4
%define %1 @%1@4
%endmacro
;cfastcall Skl_IDct16_SSE
globl Skl_IDct16_SSE
globl Skl_IDct16_MMX
globl Skl_IDct16_Put_SSE
globl Skl_IDct16_Put_MMX
globl Skl_IDct16_Add_SSE
globl Skl_IDct16_Add_MMX
;//////////////////////////////////////////////////////////////////////
;
; -=FDCT=-
;
; Vertical pass is an implementation of the scheme:
; Loeffler C., Ligtenberg A., and Moschytz C.S.:
; Practical Fast 1D DCT Algorithm with Eleven Multiplications,
; Proc. ICASSP 1989, 988-991.
;
; Horizontal pass is a double 4x4 vector/matrix multiplication,
; (see also Intel's Application Note 922:
; http://developer.intel.com/vtune/cbts/strmsimd/922down.htm
; Copyright (C) 1999 Intel Corporation)
;
; Notes:
; * tan(3pi/16) is greater than 0.5, and would use the
; sign bit when turned into 16b fixed-point precision. So,
; we use the trick: x*tan3 = x*(tan3-1)+x
;
; * There's only one SSE-specific instruction (pshufw).
;
; * There's still 1 or 2 ticks to save in fLLM_PASS, but
; I prefer having a readable code, instead of a tightly
; scheduled one...
;
; * Quantization stage (as well as pre-transposition for the
; idct way back) can be included in the fTab* constants
; (with induced loss of precision, somehow)
;
; * Some more details at: http://skal.planet-d.net/coding/dct.html
;
;
;//////////////////////////////////////////////////////////////////////
;
; == Mean square errors ==
; 0.000 0.001 0.001 0.002 0.000 0.002 0.001 0.000 [0.001]
; 0.035 0.029 0.032 0.032 0.031 0.032 0.034 0.035 [0.032]
; 0.026 0.028 0.027 0.027 0.025 0.028 0.028 0.025 [0.027]
; 0.037 0.032 0.031 0.030 0.028 0.029 0.026 0.031 [0.030]
; 0.000 0.001 0.001 0.002 0.000 0.002 0.001 0.001 [0.001]
; 0.025 0.024 0.022 0.022 0.022 0.022 0.023 0.023 [0.023]
; 0.026 0.028 0.025 0.028 0.030 0.025 0.026 0.027 [0.027]
; 0.021 0.020 0.020 0.022 0.020 0.022 0.017 0.019 [0.020]
;
; == Abs Mean errors ==
; 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 [0.000]
; 0.020 0.001 0.003 0.003 0.000 0.004 0.002 0.003 [0.002]
; 0.000 0.001 0.001 0.001 0.001 0.004 0.000 0.000 [0.000]
; 0.027 0.001 0.000 0.002 0.002 0.002 0.001 0.000 [0.003]
; 0.000 0.000 0.000 0.000 0.000 0.001 0.000 0.001 [-0.000]
; 0.001 0.003 0.001 0.001 0.002 0.001 0.000 0.000 [-0.000]
; 0.000 0.002 0.002 0.001 0.001 0.002 0.001 0.000 [-0.000]
; 0.000 0.002 0.001 0.002 0.001 0.002 0.001 0.001 [-0.000]
;
; =========================
; Peak error: 1.0000
; Peak MSE: 0.0365
; Overall MSE: 0.0201
; Peak ME: 0.0265
; Overall ME: 0.0006
;
;//////////////////////////////////////////////////////////////////////
;
; -=IDCT=-
;
; A little slower than fdct, because the final stages (butterflies and
; descaling) require some unpairable shifting and packing, all on
; the same CPU unit.
;
; THIS IDCT IS NOT IEEE-COMPLIANT: IT WILL FAIL THE [-300,300]
; INPUT RANGE TEST (because of overflow). But the [-256,255] one
; is OK, and I'm fine with it (for now;)
;
; If you want ultra-compliant iDCT, just %define IEEE_COMPLIANT.
; The code will then pass the [-384,383] input test.
;
; == Mean square errors ==
; 0.007 0.006 0.005 0.007 0.006 0.007 0.005 0.007 [0.006]
; 0.006 0.008 0.007 0.007 0.007 0.008 0.008 0.008 [0.007]
; 0.008 0.008 0.008 0.008 0.007 0.009 0.010 0.007 [0.008]
; 0.007 0.007 0.006 0.007 0.008 0.007 0.006 0.008 [0.007]
; 0.007 0.006 0.006 0.006 0.006 0.005 0.006 0.006 [0.006]
; 0.008 0.007 0.006 0.008 0.007 0.008 0.009 0.009 [0.008]
; 0.008 0.006 0.010 0.008 0.008 0.008 0.007 0.007 [0.008]
; 0.007 0.006 0.006 0.007 0.007 0.006 0.006 0.007 [0.006]
;
; == Abs Mean errors ==
; 0.001 0.000 0.000 0.001 0.001 0.000 0.000 0.000 [0.000]
; 0.000 0.002 0.002 0.000 0.001 0.001 0.000 0.002 [0.000]
; 0.001 0.002 0.001 0.001 0.001 0.001 0.000 0.001 [-0.001]
; 0.000 0.002 0.000 0.000 0.001 0.000 0.000 0.001 [-0.000]
; 0.000 0.001 0.001 0.001 0.000 0.001 0.000 0.001 [0.000]
; 0.000 0.001 0.001 0.001 0.001 0.000 0.001 0.000 [0.000]
; 0.001 0.001 0.002 0.001 0.001 0.002 0.001 0.001 [0.001]
; 0.000 0.000 0.001 0.000 0.000 0.000 0.000 0.000 [0.000]
;
; =========================
;
; Peak error: 1.0000
; Peak MSE: 0.0092
; Overall MSE: 0.0071
; Peak ME: 0.0022
; Overall ME: -0.0002
;
;//////////////////////////////////////////////////////////////////////
DATA
align 16
tan1: dw 0x32ec,0x32ec,0x32ec,0x32ec ; tan( pi/16)
tan2: dw 0x6a0a,0x6a0a,0x6a0a,0x6a0a ; tan(2pi/16) (=sqrt(2)-1)
tan3: dw 0xab0e,0xab0e,0xab0e,0xab0e ; tan(3pi/16)-1
sqrt2: dw 0x5a82,0x5a82,0x5a82,0x5a82 ; 0.5/sqrt(2)
;//////////////////////////////////////////////////////////////////////
align 16
iTab1:
dw 0x4000, 0x539f, 0x4000, 0x22a3,
dw 0x4000, 0x22a3, 0xc000, 0xac61,
dw 0x4000, 0xdd5d, 0x4000, 0xac61,
dw 0xc000, 0x539f, 0x4000, 0xdd5d,
dw 0x58c5, 0x4b42, 0x4b42, 0xee58,
dw 0x3249, 0x11a8, 0xa73b, 0xcdb7,
dw 0x3249, 0xa73b, 0x11a8, 0xcdb7,
dw 0x11a8, 0x4b42, 0x4b42, 0xa73b
iTab2:
dw 0x58c5, 0x73fc, 0x58c5, 0x300b,
dw 0x58c5, 0x300b, 0xa73b, 0x8c04,
dw 0x58c5, 0xcff5, 0x58c5, 0x8c04,
dw 0xa73b, 0x73fc, 0x58c5, 0xcff5,
dw 0x7b21, 0x6862, 0x6862, 0xe782,
dw 0x45bf, 0x187e, 0x84df, 0xba41,
dw 0x45bf, 0x84df, 0x187e, 0xba41,
dw 0x187e, 0x6862, 0x6862, 0x84df
iTab3:
dw 0x539f, 0x6d41, 0x539f, 0x2d41,
dw 0x539f, 0x2d41, 0xac61, 0x92bf,
dw 0x539f, 0xd2bf, 0x539f, 0x92bf,
dw 0xac61, 0x6d41, 0x539f, 0xd2bf,
dw 0x73fc, 0x6254, 0x6254, 0xe8ee,
dw 0x41b3, 0x1712, 0x8c04, 0xbe4d,
dw 0x41b3, 0x8c04, 0x1712, 0xbe4d,
dw 0x1712, 0x6254, 0x6254, 0x8c04
iTab4:
dw 0x4b42, 0x6254, 0x4b42, 0x28ba,
dw 0x4b42, 0x28ba, 0xb4be, 0x9dac,
dw 0x4b42, 0xd746, 0x4b42, 0x9dac,
dw 0xb4be, 0x6254, 0x4b42, 0xd746,
dw 0x6862, 0x587e, 0x587e, 0xeb3d,
dw 0x3b21, 0x14c3, 0x979e, 0xc4df,
dw 0x3b21, 0x979e, 0x14c3, 0xc4df,
dw 0x14c3, 0x587e, 0x587e, 0x979e
align 16
iTab1_MMX:
dw 0x4000, 0x4000, 0x4000, 0xc000
dw 0x539f, 0x22a3, 0x22a3, 0xac61
dw 0x4000, 0xc000, 0x4000, 0x4000
dw 0xdd5d, 0x539f, 0xac61, 0xdd5d
dw 0x58c5, 0x3249, 0x4b42, 0xa73b
dw 0x4b42, 0x11a8, 0xee58, 0xcdb7
dw 0x3249, 0x11a8, 0x11a8, 0x4b42
dw 0xa73b, 0x4b42, 0xcdb7, 0xa73b
iTab2_MMX:
dw 0x58c5, 0x58c5, 0x58c5, 0xa73b
dw 0x73fc, 0x300b, 0x300b, 0x8c04
dw 0x58c5, 0xa73b, 0x58c5, 0x58c5
dw 0xcff5, 0x73fc, 0x8c04, 0xcff5
dw 0x7b21, 0x45bf, 0x6862, 0x84df
dw 0x6862, 0x187e, 0xe782, 0xba41
dw 0x45bf, 0x187e, 0x187e, 0x6862
dw 0x84df, 0x6862, 0xba41, 0x84df
iTab3_MMX:
dw 0x539f, 0x539f, 0x539f, 0xac61
dw 0x6d41, 0x2d41, 0x2d41, 0x92bf
dw 0x539f, 0xac61, 0x539f, 0x539f
dw 0xd2bf, 0x6d41, 0x92bf, 0xd2bf
dw 0x73fc, 0x41b3, 0x6254, 0x8c04
dw 0x6254, 0x1712, 0xe8ee, 0xbe4d
dw 0x41b3, 0x1712, 0x1712, 0x6254
dw 0x8c04, 0x6254, 0xbe4d, 0x8c04
iTab4_MMX:
dw 0x4b42, 0x4b42, 0x4b42, 0xb4be
dw 0x6254, 0x28ba, 0x28ba, 0x9dac
dw 0x4b42, 0xb4be, 0x4b42, 0x4b42
dw 0xd746, 0x6254, 0x9dac, 0xd746
dw 0x6862, 0x3b21, 0x587e, 0x979e
dw 0x587e, 0x14c3, 0xeb3d, 0xc4df
dw 0x3b21, 0x14c3, 0x14c3, 0x587e
dw 0x979e, 0x587e, 0xc4df, 0x979e
; the original rounding trick is by
; Michel Lespinasse (hi Walken!) <walken@zoy.org>
align 16
Idct_Rnd0 dd 65535, 65535
Idct_Rnd1 dd 3612, 3612
Idct_Rnd2 dd 2271, 2271
Idct_Rnd3 dd 1203, 1203
Idct_Rnd4 dd 1023, 1023
Idct_Rnd5 dd 102, 102
Idct_Rnd6 dd 398, 398
Idct_Rnd7 dd 469, 469
Idct_Sparse_Rnd0 times 4 dw (65535>>11)
Idct_Sparse_Rnd1 times 4 dw ( 3612>>11)
Idct_Sparse_Rnd2 times 4 dw ( 2271>>11)
; other rounders are zero...
;//////////////////////////////////////////////////////////////////////
align 16
fTab1:
dw 0x4000, 0x4000, 0x58c5, 0x4b42,
dw 0x4000, 0x4000, 0x3249, 0x11a8,
dw 0x539f, 0x22a3, 0x4b42, 0xee58,
dw 0xdd5d, 0xac61, 0xa73b, 0xcdb7,
dw 0x4000, 0xc000, 0x3249, 0xa73b,
dw 0xc000, 0x4000, 0x11a8, 0x4b42,
dw 0x22a3, 0xac61, 0x11a8, 0xcdb7,
dw 0x539f, 0xdd5d, 0x4b42, 0xa73b
fTab2:
dw 0x58c5, 0x58c5, 0x7b21, 0x6862,
dw 0x58c5, 0x58c5, 0x45bf, 0x187e,
dw 0x73fc, 0x300b, 0x6862, 0xe782,
dw 0xcff5, 0x8c04, 0x84df, 0xba41,
dw 0x58c5, 0xa73b, 0x45bf, 0x84df,
dw 0xa73b, 0x58c5, 0x187e, 0x6862,
dw 0x300b, 0x8c04, 0x187e, 0xba41,
dw 0x73fc, 0xcff5, 0x6862, 0x84df
fTab3:
dw 0x539f, 0x539f, 0x73fc, 0x6254,
dw 0x539f, 0x539f, 0x41b3, 0x1712,
dw 0x6d41, 0x2d41, 0x6254, 0xe8ee,
dw 0xd2bf, 0x92bf, 0x8c04, 0xbe4d,
dw 0x539f, 0xac61, 0x41b3, 0x8c04,
dw 0xac61, 0x539f, 0x1712, 0x6254,
dw 0x2d41, 0x92bf, 0x1712, 0xbe4d,
dw 0x6d41, 0xd2bf, 0x6254, 0x8c04
fTab4:
dw 0x4b42, 0x4b42, 0x6862, 0x587e,
dw 0x4b42, 0x4b42, 0x3b21, 0x14c3,
dw 0x6254, 0x28ba, 0x587e, 0xeb3d,
dw 0xd746, 0x9dac, 0x979e, 0xc4df,
dw 0x4b42, 0xb4be, 0x3b21, 0x979e,
dw 0xb4be, 0x4b42, 0x14c3, 0x587e,
dw 0x28ba, 0x9dac, 0x14c3, 0xc4df,
dw 0x6254, 0xd746, 0x587e, 0x979e
align 16
Fdct_Rnd0: dw 6,8,8,8
Fdct_Rnd1: dw 8,8,8,8
Fdct_Rnd2: dw 10,8,8,8
MMX_One: dw 1,1,1,1
;//////////////////////////////////////////////////////////////////////
TEXT
;//////////////////////////////////////////////////////////////////////
; iMTX_MULT (~24c)
;//////////////////////////////////////////////////////////////////////
%macro iMTX_MULT 4 ; %1=src, %2 = Table to use, %3=rounder, %4=Shift
movq mm0, [ecx+%1*16+0] ; mm0 = [0123]
movq mm1, [ecx+%1*16+8] ; mm1 = [4567]
movq mm3, [%2+0] ; [ M00 M01 M04 M05]
pshufw mm2, mm0, 11011101b ; [1313]
movq mm4, [%2+8] ; [ M02 M03 M06 M07]
pshufw mm0, mm0, 10001000b ; [0202]
movq mm6, [%2+32] ; [ M16 M17 M20 M21]
pshufw mm5, mm1, 11011101b ; [5757]
movq mm7, [%2+40] ; [ M18 M19 M22 M23]
pshufw mm1, mm1, 10001000b ; [4646]
pmaddwd mm3, mm0 ; [i0.M00+i2.M01 | i0.M04+i2.M05]
pmaddwd mm6, mm2 ; [i1.M16+i3.M17 | i1.M20+i3.M21]
pmaddwd mm4, mm1 ; [i4.M02+i6.M03 | i4.M06+i6.M07]
pmaddwd mm7, mm5 ; [i5.M18+i7.M19 | i5.M22+i7.M23]
pmaddwd mm2, [%2+48] ; [i1.M24+i3.M25 | i1.M28+i3.M29]
pmaddwd mm5, [%2+56] ; [i5.M26+i7.M27 | i5.M30+i7.M31]
pmaddwd mm0, [%2+16] ; [i0.M08+i2.M09 | i0.M12+i2.M13]
pmaddwd mm1, [%2+24] ; [i4.M10+i6.M11 | i4.M14+i6.M15]
paddd mm3, [%3] ; Round
paddd mm6, mm7 ; => b0 | b1
paddd mm0, [%3] ; Round
paddd mm2, mm5 ; => b2 | b3
paddd mm3, mm4 ; => a0 | a1
paddd mm0, mm1 ; => a2 | a3
movq mm4, mm3 ; a0 | a1
movq mm7, mm0 ; a2 | a3
paddd mm3, mm6 ; a0+b0 | a1+b1
psubd mm4, mm6 ; a0-b0 | a1-b1
psubd mm7, mm2 ; a2-b2 | a3-b3
paddd mm0, mm2 ; a2+b2 | a3+b3
psrad mm3, %4 ; => out0 | out1
psrad mm4, %4 ; => out7 | out6
psrad mm0, %4 ; => out2 | out3
psrad mm7, %4 ; => out5 | out4
packssdw mm3, mm0 ; [0123]
packssdw mm7, mm4 ; [5476]
movq [ecx+%1*16+0], mm3
pshufw mm7, mm7, 10110001b ; [4567]
movq [ecx+%1*16+8], mm7
%endmacro
%macro iMTX_MULT_03 4 ; %1=src, %2 = Table to use, %3=rounder, %4=Shift
; this version assume [4567] coeffs are zero...
movq mm0, [ecx+%1*16+0] ; mm0 = [0123]
movq mm3, [%2+0] ; [ M00 M01 M04 M05]
pshufw mm2, mm0, 11011101b ; [1313]
movq mm6, [%2+32] ; [ M16 M17 M20 M21]
pshufw mm0, mm0, 10001000b ; [0202]
pmaddwd mm6, mm2 ; [i1.M16+i3.M17 | i1.M20+i3.M21]
pmaddwd mm3, mm0 ; [i0.M00+i2.M01 | i0.M04+i2.M05]
pmaddwd mm2, [%2+48] ; [i1.M24+i3.M25 | i1.M28+i3.M29]
pmaddwd mm0, [%2+16] ; [i0.M08+i2.M09 | i0.M12+i2.M13]
; mm2=b2|b3 mm6 = b0|b1
paddd mm3, [%3] ; Round
paddd mm0, [%3] ; Round
movq mm4, mm3 ; a0 | a1
movq mm7, mm0 ; a2 | a3
paddd mm3, mm6 ; a0+b0 | a1+b1
psubd mm4, mm6 ; a0-b0 | a1-b1
psubd mm7, mm2 ; a2-b2 | a3-b3
paddd mm0, mm2 ; a2+b2 | a3+b3
psrad mm3, %4 ; => out0 | out1
psrad mm4, %4 ; => out7 | out6
psrad mm0, %4 ; => out2 | out3
psrad mm7, %4 ; => out5 | out4
packssdw mm3, mm0 ; [0123]
packssdw mm7, mm4 ; [5476]
movq [ecx+%1*16+0], mm3
pshufw mm7, mm7, 10110001b ; [4567]
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