mirror of
https://bitbucket.org/CPMADevs/cnq3
synced 2024-12-13 22:10:49 +00:00
fc9465caab
aside from the speed improvements, this also makes for nicer code in the renderer interaction with libjpeg, thanks to mem_dest support etc
319 lines
12 KiB
NASM
319 lines
12 KiB
NASM
;
|
|
; jfdctflt.asm - floating-point FDCT (3DNow!)
|
|
;
|
|
; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
|
|
;
|
|
; Based on the x86 SIMD extension for IJG JPEG library
|
|
; Copyright (C) 1999-2006, MIYASAKA Masaru.
|
|
; For conditions of distribution and use, see copyright notice in jsimdext.inc
|
|
;
|
|
; This file should be assembled with NASM (Netwide Assembler),
|
|
; can *not* be assembled with Microsoft's MASM or any compatible
|
|
; assembler (including Borland's Turbo Assembler).
|
|
; NASM is available from http://nasm.sourceforge.net/ or
|
|
; http://sourceforge.net/project/showfiles.php?group_id=6208
|
|
;
|
|
; This file contains a floating-point implementation of the forward DCT
|
|
; (Discrete Cosine Transform). The following code is based directly on
|
|
; the IJG's original jfdctflt.c; see the jfdctflt.c for more details.
|
|
;
|
|
; [TAB8]
|
|
|
|
%include "jsimdext.inc"
|
|
%include "jdct.inc"
|
|
|
|
; --------------------------------------------------------------------------
|
|
SECTION SEG_CONST
|
|
|
|
alignz 16
|
|
global EXTN(jconst_fdct_float_3dnow)
|
|
|
|
EXTN(jconst_fdct_float_3dnow):
|
|
|
|
PD_0_382 times 2 dd 0.382683432365089771728460
|
|
PD_0_707 times 2 dd 0.707106781186547524400844
|
|
PD_0_541 times 2 dd 0.541196100146196984399723
|
|
PD_1_306 times 2 dd 1.306562964876376527856643
|
|
|
|
alignz 16
|
|
|
|
; --------------------------------------------------------------------------
|
|
SECTION SEG_TEXT
|
|
BITS 32
|
|
;
|
|
; Perform the forward DCT on one block of samples.
|
|
;
|
|
; GLOBAL(void)
|
|
; jsimd_fdct_float_3dnow (FAST_FLOAT *data)
|
|
;
|
|
|
|
%define data(b) (b)+8 ; FAST_FLOAT *data
|
|
|
|
%define original_ebp ebp+0
|
|
%define wk(i) ebp-(WK_NUM-(i))*SIZEOF_MMWORD ; mmword wk[WK_NUM]
|
|
%define WK_NUM 2
|
|
|
|
align 16
|
|
global EXTN(jsimd_fdct_float_3dnow)
|
|
|
|
EXTN(jsimd_fdct_float_3dnow):
|
|
push ebp
|
|
mov eax,esp ; eax = original ebp
|
|
sub esp, byte 4
|
|
and esp, byte (-SIZEOF_MMWORD) ; align to 64 bits
|
|
mov [esp],eax
|
|
mov ebp,esp ; ebp = aligned ebp
|
|
lea esp, [wk(0)]
|
|
pushpic ebx
|
|
; push ecx ; need not be preserved
|
|
; push edx ; need not be preserved
|
|
; push esi ; unused
|
|
; push edi ; unused
|
|
|
|
get_GOT ebx ; get GOT address
|
|
|
|
; ---- Pass 1: process rows.
|
|
|
|
mov edx, POINTER [data(eax)] ; (FAST_FLOAT *)
|
|
mov ecx, DCTSIZE/2
|
|
alignx 16,7
|
|
.rowloop:
|
|
|
|
movq mm0, MMWORD [MMBLOCK(0,0,edx,SIZEOF_FAST_FLOAT)]
|
|
movq mm1, MMWORD [MMBLOCK(1,0,edx,SIZEOF_FAST_FLOAT)]
|
|
movq mm2, MMWORD [MMBLOCK(0,3,edx,SIZEOF_FAST_FLOAT)]
|
|
movq mm3, MMWORD [MMBLOCK(1,3,edx,SIZEOF_FAST_FLOAT)]
|
|
|
|
; mm0=(00 01), mm1=(10 11), mm2=(06 07), mm3=(16 17)
|
|
|
|
movq mm4,mm0 ; transpose coefficients
|
|
punpckldq mm0,mm1 ; mm0=(00 10)=data0
|
|
punpckhdq mm4,mm1 ; mm4=(01 11)=data1
|
|
movq mm5,mm2 ; transpose coefficients
|
|
punpckldq mm2,mm3 ; mm2=(06 16)=data6
|
|
punpckhdq mm5,mm3 ; mm5=(07 17)=data7
|
|
|
|
movq mm6,mm4
|
|
movq mm7,mm0
|
|
pfsub mm4,mm2 ; mm4=data1-data6=tmp6
|
|
pfsub mm0,mm5 ; mm0=data0-data7=tmp7
|
|
pfadd mm6,mm2 ; mm6=data1+data6=tmp1
|
|
pfadd mm7,mm5 ; mm7=data0+data7=tmp0
|
|
|
|
movq mm1, MMWORD [MMBLOCK(0,1,edx,SIZEOF_FAST_FLOAT)]
|
|
movq mm3, MMWORD [MMBLOCK(1,1,edx,SIZEOF_FAST_FLOAT)]
|
|
movq mm2, MMWORD [MMBLOCK(0,2,edx,SIZEOF_FAST_FLOAT)]
|
|
movq mm5, MMWORD [MMBLOCK(1,2,edx,SIZEOF_FAST_FLOAT)]
|
|
|
|
; mm1=(02 03), mm3=(12 13), mm2=(04 05), mm5=(14 15)
|
|
|
|
movq MMWORD [wk(0)], mm4 ; wk(0)=tmp6
|
|
movq MMWORD [wk(1)], mm0 ; wk(1)=tmp7
|
|
|
|
movq mm4,mm1 ; transpose coefficients
|
|
punpckldq mm1,mm3 ; mm1=(02 12)=data2
|
|
punpckhdq mm4,mm3 ; mm4=(03 13)=data3
|
|
movq mm0,mm2 ; transpose coefficients
|
|
punpckldq mm2,mm5 ; mm2=(04 14)=data4
|
|
punpckhdq mm0,mm5 ; mm0=(05 15)=data5
|
|
|
|
movq mm3,mm4
|
|
movq mm5,mm1
|
|
pfadd mm4,mm2 ; mm4=data3+data4=tmp3
|
|
pfadd mm1,mm0 ; mm1=data2+data5=tmp2
|
|
pfsub mm3,mm2 ; mm3=data3-data4=tmp4
|
|
pfsub mm5,mm0 ; mm5=data2-data5=tmp5
|
|
|
|
; -- Even part
|
|
|
|
movq mm2,mm7
|
|
movq mm0,mm6
|
|
pfsub mm7,mm4 ; mm7=tmp13
|
|
pfsub mm6,mm1 ; mm6=tmp12
|
|
pfadd mm2,mm4 ; mm2=tmp10
|
|
pfadd mm0,mm1 ; mm0=tmp11
|
|
|
|
pfadd mm6,mm7
|
|
pfmul mm6,[GOTOFF(ebx,PD_0_707)] ; mm6=z1
|
|
|
|
movq mm4,mm2
|
|
movq mm1,mm7
|
|
pfsub mm2,mm0 ; mm2=data4
|
|
pfsub mm7,mm6 ; mm7=data6
|
|
pfadd mm4,mm0 ; mm4=data0
|
|
pfadd mm1,mm6 ; mm1=data2
|
|
|
|
movq MMWORD [MMBLOCK(0,2,edx,SIZEOF_FAST_FLOAT)], mm2
|
|
movq MMWORD [MMBLOCK(0,3,edx,SIZEOF_FAST_FLOAT)], mm7
|
|
movq MMWORD [MMBLOCK(0,0,edx,SIZEOF_FAST_FLOAT)], mm4
|
|
movq MMWORD [MMBLOCK(0,1,edx,SIZEOF_FAST_FLOAT)], mm1
|
|
|
|
; -- Odd part
|
|
|
|
movq mm0, MMWORD [wk(0)] ; mm0=tmp6
|
|
movq mm6, MMWORD [wk(1)] ; mm6=tmp7
|
|
|
|
pfadd mm3,mm5 ; mm3=tmp10
|
|
pfadd mm5,mm0 ; mm5=tmp11
|
|
pfadd mm0,mm6 ; mm0=tmp12, mm6=tmp7
|
|
|
|
pfmul mm5,[GOTOFF(ebx,PD_0_707)] ; mm5=z3
|
|
|
|
movq mm2,mm3 ; mm2=tmp10
|
|
pfsub mm3,mm0
|
|
pfmul mm3,[GOTOFF(ebx,PD_0_382)] ; mm3=z5
|
|
pfmul mm2,[GOTOFF(ebx,PD_0_541)] ; mm2=MULTIPLY(tmp10,FIX_0_54119610)
|
|
pfmul mm0,[GOTOFF(ebx,PD_1_306)] ; mm0=MULTIPLY(tmp12,FIX_1_30656296)
|
|
pfadd mm2,mm3 ; mm2=z2
|
|
pfadd mm0,mm3 ; mm0=z4
|
|
|
|
movq mm7,mm6
|
|
pfsub mm6,mm5 ; mm6=z13
|
|
pfadd mm7,mm5 ; mm7=z11
|
|
|
|
movq mm4,mm6
|
|
movq mm1,mm7
|
|
pfsub mm6,mm2 ; mm6=data3
|
|
pfsub mm7,mm0 ; mm7=data7
|
|
pfadd mm4,mm2 ; mm4=data5
|
|
pfadd mm1,mm0 ; mm1=data1
|
|
|
|
movq MMWORD [MMBLOCK(1,1,edx,SIZEOF_FAST_FLOAT)], mm6
|
|
movq MMWORD [MMBLOCK(1,3,edx,SIZEOF_FAST_FLOAT)], mm7
|
|
movq MMWORD [MMBLOCK(1,2,edx,SIZEOF_FAST_FLOAT)], mm4
|
|
movq MMWORD [MMBLOCK(1,0,edx,SIZEOF_FAST_FLOAT)], mm1
|
|
|
|
add edx, byte 2*DCTSIZE*SIZEOF_FAST_FLOAT
|
|
dec ecx
|
|
jnz near .rowloop
|
|
|
|
; ---- Pass 2: process columns.
|
|
|
|
mov edx, POINTER [data(eax)] ; (FAST_FLOAT *)
|
|
mov ecx, DCTSIZE/2
|
|
alignx 16,7
|
|
.columnloop:
|
|
|
|
movq mm0, MMWORD [MMBLOCK(0,0,edx,SIZEOF_FAST_FLOAT)]
|
|
movq mm1, MMWORD [MMBLOCK(1,0,edx,SIZEOF_FAST_FLOAT)]
|
|
movq mm2, MMWORD [MMBLOCK(6,0,edx,SIZEOF_FAST_FLOAT)]
|
|
movq mm3, MMWORD [MMBLOCK(7,0,edx,SIZEOF_FAST_FLOAT)]
|
|
|
|
; mm0=(00 10), mm1=(01 11), mm2=(60 70), mm3=(61 71)
|
|
|
|
movq mm4,mm0 ; transpose coefficients
|
|
punpckldq mm0,mm1 ; mm0=(00 01)=data0
|
|
punpckhdq mm4,mm1 ; mm4=(10 11)=data1
|
|
movq mm5,mm2 ; transpose coefficients
|
|
punpckldq mm2,mm3 ; mm2=(60 61)=data6
|
|
punpckhdq mm5,mm3 ; mm5=(70 71)=data7
|
|
|
|
movq mm6,mm4
|
|
movq mm7,mm0
|
|
pfsub mm4,mm2 ; mm4=data1-data6=tmp6
|
|
pfsub mm0,mm5 ; mm0=data0-data7=tmp7
|
|
pfadd mm6,mm2 ; mm6=data1+data6=tmp1
|
|
pfadd mm7,mm5 ; mm7=data0+data7=tmp0
|
|
|
|
movq mm1, MMWORD [MMBLOCK(2,0,edx,SIZEOF_FAST_FLOAT)]
|
|
movq mm3, MMWORD [MMBLOCK(3,0,edx,SIZEOF_FAST_FLOAT)]
|
|
movq mm2, MMWORD [MMBLOCK(4,0,edx,SIZEOF_FAST_FLOAT)]
|
|
movq mm5, MMWORD [MMBLOCK(5,0,edx,SIZEOF_FAST_FLOAT)]
|
|
|
|
; mm1=(20 30), mm3=(21 31), mm2=(40 50), mm5=(41 51)
|
|
|
|
movq MMWORD [wk(0)], mm4 ; wk(0)=tmp6
|
|
movq MMWORD [wk(1)], mm0 ; wk(1)=tmp7
|
|
|
|
movq mm4,mm1 ; transpose coefficients
|
|
punpckldq mm1,mm3 ; mm1=(20 21)=data2
|
|
punpckhdq mm4,mm3 ; mm4=(30 31)=data3
|
|
movq mm0,mm2 ; transpose coefficients
|
|
punpckldq mm2,mm5 ; mm2=(40 41)=data4
|
|
punpckhdq mm0,mm5 ; mm0=(50 51)=data5
|
|
|
|
movq mm3,mm4
|
|
movq mm5,mm1
|
|
pfadd mm4,mm2 ; mm4=data3+data4=tmp3
|
|
pfadd mm1,mm0 ; mm1=data2+data5=tmp2
|
|
pfsub mm3,mm2 ; mm3=data3-data4=tmp4
|
|
pfsub mm5,mm0 ; mm5=data2-data5=tmp5
|
|
|
|
; -- Even part
|
|
|
|
movq mm2,mm7
|
|
movq mm0,mm6
|
|
pfsub mm7,mm4 ; mm7=tmp13
|
|
pfsub mm6,mm1 ; mm6=tmp12
|
|
pfadd mm2,mm4 ; mm2=tmp10
|
|
pfadd mm0,mm1 ; mm0=tmp11
|
|
|
|
pfadd mm6,mm7
|
|
pfmul mm6,[GOTOFF(ebx,PD_0_707)] ; mm6=z1
|
|
|
|
movq mm4,mm2
|
|
movq mm1,mm7
|
|
pfsub mm2,mm0 ; mm2=data4
|
|
pfsub mm7,mm6 ; mm7=data6
|
|
pfadd mm4,mm0 ; mm4=data0
|
|
pfadd mm1,mm6 ; mm1=data2
|
|
|
|
movq MMWORD [MMBLOCK(4,0,edx,SIZEOF_FAST_FLOAT)], mm2
|
|
movq MMWORD [MMBLOCK(6,0,edx,SIZEOF_FAST_FLOAT)], mm7
|
|
movq MMWORD [MMBLOCK(0,0,edx,SIZEOF_FAST_FLOAT)], mm4
|
|
movq MMWORD [MMBLOCK(2,0,edx,SIZEOF_FAST_FLOAT)], mm1
|
|
|
|
; -- Odd part
|
|
|
|
movq mm0, MMWORD [wk(0)] ; mm0=tmp6
|
|
movq mm6, MMWORD [wk(1)] ; mm6=tmp7
|
|
|
|
pfadd mm3,mm5 ; mm3=tmp10
|
|
pfadd mm5,mm0 ; mm5=tmp11
|
|
pfadd mm0,mm6 ; mm0=tmp12, mm6=tmp7
|
|
|
|
pfmul mm5,[GOTOFF(ebx,PD_0_707)] ; mm5=z3
|
|
|
|
movq mm2,mm3 ; mm2=tmp10
|
|
pfsub mm3,mm0
|
|
pfmul mm3,[GOTOFF(ebx,PD_0_382)] ; mm3=z5
|
|
pfmul mm2,[GOTOFF(ebx,PD_0_541)] ; mm2=MULTIPLY(tmp10,FIX_0_54119610)
|
|
pfmul mm0,[GOTOFF(ebx,PD_1_306)] ; mm0=MULTIPLY(tmp12,FIX_1_30656296)
|
|
pfadd mm2,mm3 ; mm2=z2
|
|
pfadd mm0,mm3 ; mm0=z4
|
|
|
|
movq mm7,mm6
|
|
pfsub mm6,mm5 ; mm6=z13
|
|
pfadd mm7,mm5 ; mm7=z11
|
|
|
|
movq mm4,mm6
|
|
movq mm1,mm7
|
|
pfsub mm6,mm2 ; mm6=data3
|
|
pfsub mm7,mm0 ; mm7=data7
|
|
pfadd mm4,mm2 ; mm4=data5
|
|
pfadd mm1,mm0 ; mm1=data1
|
|
|
|
movq MMWORD [MMBLOCK(3,0,edx,SIZEOF_FAST_FLOAT)], mm6
|
|
movq MMWORD [MMBLOCK(7,0,edx,SIZEOF_FAST_FLOAT)], mm7
|
|
movq MMWORD [MMBLOCK(5,0,edx,SIZEOF_FAST_FLOAT)], mm4
|
|
movq MMWORD [MMBLOCK(1,0,edx,SIZEOF_FAST_FLOAT)], mm1
|
|
|
|
add edx, byte 2*SIZEOF_FAST_FLOAT
|
|
dec ecx
|
|
jnz near .columnloop
|
|
|
|
femms ; empty MMX/3DNow! 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 16
|