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split.s
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; Copyright (c) <2012> <Leif Asbrink>
;
; Permission is hereby granted, free of charge, to any person
; obtaining a copy of this software and associated documentation
; files (the "Software"), to deal in the Software without restriction,
; including without limitation the rights to use, copy, modify,
; merge, publish, distribute, sublicense, and/or sell copies of
; the Software, and to permit persons to whom the Software is
; furnished to do so, subject to the following conditions:
;
; The above copyright notice and this permission notice shall be
; included in all copies or substantial portions of the Software.
;
; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
; OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
; OR OTHER DEALINGS IN THE SOFTWARE.
%ifdef OS_LINUX
global split_two
global split_one
global mmx_fft1back_two
global mmx_fft1back_one
global fft1back_mmx_finish
extern mailbox
extern fft1_split_shi
extern fft1_first_point
extern fft1_last_point
extern fft1_float
extern fft1_size
extern liminfo
extern fft1_px
extern fft1_block
extern fft1_mask
extern fft1_back_scramble
extern fft1_mmxcosin
extern fft1_n
extern fft1_backbuffer
extern timf2_shi
extern timf2_pa
extern timf2_input_block
extern timf2_mask
extern timf2_pwr_int
extern fft1_interleave_points
extern fft1_inverted_mmxwin
extern rx_channels
extern fft1back_lowgain_n
extern fft1_lowlevel_points
%endif
%ifdef OS_WINDOWS
extern _fft1_split_shi
extern _fft1_first_point
extern _fft1_last_point
extern _fft1_float
extern _fft1_size
extern _liminfo
extern _fft1_px
extern _fft1_block
extern _fft1_mask
extern _fft1_back_scramble
extern _fft1_mmxcosin
extern _fft1_n
extern _fft1_backbuffer
extern _timf2_shi
extern _timf2_pa
extern _timf2_input_block
extern _timf2_mask
extern _timf2_pwr_int
extern _fft1_interleave_points
extern _fft1_inverted_mmxwin
extern _rx_channels
extern _fft1back_lowgain_n
extern _fft1_lowlevel_points
global _split_two
global _split_one
global _mmx_fft1back_two
global _mmx_fft1back_one
global _fft1back_mmx_finish
fft1_split_shi equ _fft1_split_shi
fft1_first_point equ _fft1_first_point
fft1_last_point equ _fft1_last_point
fft1_float equ _fft1_float
fft1_size equ _fft1_size
liminfo equ _liminfo
fft1_px equ _fft1_px
fft1_block equ _fft1_block
fft1_mask equ _fft1_mask
fft1_back_scramble equ _fft1_back_scramble
fft1_mmxcosin equ _fft1_mmxcosin
fft1_n equ _fft1_n
fft1_backbuffer equ _fft1_backbuffer
timf2_shi equ _timf2_shi
timf2_pa equ _timf2_pa
timf2_input_block equ _timf2_input_block
timf2_mask equ _timf2_mask
timf2_pwr_int equ _timf2_pwr_int
fft1_interleave_points equ _fft1_interleave_points
fft1_inverted_mmxwin equ _fft1_inverted_mmxwin
rx_channels equ _rx_channels
fft1back_lowgain_n equ _fft1back_lowgain_n
fft1_lowlevel_points equ _fft1_lowlevel_points
%endif
section .bss
mem1 resd 1
mem2 resd 1
mem3 resd 1
mem5 resd 1
%define INCC ebp-4
%define SIZ2 ebp-8
%define M2 ebp-12
%define J ebp-16
%define N ebp-20
%define M1 ebp-24
%define SIZ8 ebp-28
section .text
; Construct timf2_shi from back transforms in fft1_backbuffer
; Calculate timf2_pwr_int
fft1back_mmx_finish
_fft1back_mmx_finish
push eax
push ebx
push ecx
push edx
push esi
push edi
push ebp
mov ebx,[fft1_interleave_points]
mov edi,[timf2_pa]
add edi,edi
add edi,[timf2_shi]
mov esi,[fft1_backbuffer]
mov eax,[timf2_input_block]
add eax,eax
sub eax,8
cmp dword [rx_channels],1
jz near finish_one
shr eax,2
mov ebp,[timf2_pa]
shr ebp,1
add ebp,[timf2_pwr_int]
or ebx,ebx
jnz not_two_0
; ********************************************
; No window used
two_0_loop:
movq mm1,[4*eax+esi-8]
movq [4*eax+edi-8],mm1
pmaddwd mm1,mm1
psrld mm1,1
movq mm2,mm1
psllq mm1,32
paddd mm1,mm2
movq [eax+ebp-6],mm1
movq mm1,[4*eax+esi]
movq [4*eax+edi],mm1
sub eax,4
jns two_0_loop
; We have destroyed one data point in timf2_pwr_int. Put it back!
movsx eax,word [-16+edi]
imul eax,eax
movsx ebx,word [-14+edi]
imul ebx,ebx
add eax,ebx
shr eax,1
movsx ecx,word [-12+edi]
imul ecx,ecx
movsx ebx,word [-10+edi]
imul ebx,ebx
add ecx,ebx
shr ecx,1
add eax,ecx
mov [-4+ebp],eax
jmp near finish_x
; **********************************************
; sin squared window
not_two_0:
add ebx,ebx
cmp ebx,[fft1_size]
jnz near not_two_2
two_2a_loop:
movq mm1,[4*eax+esi-8]
paddsw mm1,[4*eax+edi-8]
movq [4*eax+edi-8],mm1
pmaddwd mm1,mm1
psrad mm1,1
movq mm2,mm1
psllq mm1,32
paddd mm1,mm2
movq [eax+ebp-6],mm1
movq mm1,[4*eax+esi]
paddsw mm1,[4*eax+edi]
movq [4*eax+edi],mm1
sub eax,4
jns two_2a_loop
; We have destroyed one data point in timf2_pwr_int. Put it back!
movsx eax,word [-16+edi]
imul eax,eax
movsx ebx,word [-14+edi]
imul ebx,ebx
add eax,ebx
shr eax,1
movsx ecx,word [-12+edi]
imul ecx,ecx
movsx ebx,word [-10+edi]
imul ebx,ebx
add ecx,ebx
shr ecx,1
add eax,ecx
mov [-4+ebp],eax
mov eax,[timf2_input_block]
mov edi,[timf2_pa]
add edi,eax
and edi,[timf2_mask]
add edi,edi
add edi,[timf2_shi]
mov esi,[fft1_backbuffer]
add eax,eax
add esi,eax
sub eax,8
two_2b_loop:
movq mm1,[eax+esi]
movq [eax+edi],mm1
sub eax,8
jns two_2b_loop
jmp near finish_x
; *****************************************
; window N=1 or N>2
not_two_2:
mov ebp,[fft1_inverted_mmxwin]
mov eax,[fft1_size]
sal eax,2
mov [ebp-4],eax
mov eax,[fft1_interleave_points]
sal eax,2
mov [ebp-8],eax
mov eax,[fft1_interleave_points]
sal eax,2
mov edx,[timf2_mask]
mov ecx,[timf2_pa]
mov edi,[timf2_shi]
shr ecx,1
mov ebx,[timf2_pwr_int]
lea esi,[esi+2*eax]
sub ecx,4
shr edx,1
genwin_two_loop1:
movq mm0,[ebp+eax]
movq mm1,mm0
movq mm2,mm0
movq mm3,mm0
pmulhw mm0,[esi]
add ecx,4
paddsw mm0,mm0 ; shift by additions so we saturate properly!!
pmulhw mm1,[esi+8]
paddsw mm0,mm0
and ecx,edx
paddsw mm1,mm1
pmullw mm2,[esi]
paddsw mm1,mm1
add eax,8
psraw mm2,14
pmullw mm3,[esi+8]
add esi,16
psraw mm3,14
paddsw mm0,mm2
paddsw mm1,mm3
movq [edi+4*ecx],mm0
movq [edi+4*ecx+8],mm1
pmaddwd mm0,mm0
psrad mm0,1
movq mm2,mm0
psrlq mm0,32
paddd mm0,mm2
movq [ebx+ecx],mm0
cmp eax,[ebp-4]
jnz genwin_two_loop1
align 8
genwin_two_loop2:
movq mm0,[ebp+eax]
movq mm1,mm0
movq mm2,mm0
movq mm3,mm0
pmulhw mm0,[esi]
add ecx,4
paddsw mm0,mm0 ; shift by additions so we saturate!!
pmulhw mm1,[esi+8]
paddsw mm0,mm0
and ecx,edx
paddsw mm1,mm1
pmullw mm2,[esi]
paddsw mm1,mm1
sub eax,8
psraw mm2,14
pmullw mm3,[esi+8]
add esi,16
psraw mm3,14
paddsw mm0,mm2
paddsw mm1,mm3
movq [edi+4*ecx],mm0
movq [edi+4*ecx+8],mm1
pmaddwd mm0,mm0
psrad mm0,1
movq mm2,mm0
psrlq mm0,32
paddd mm0,mm2
movq [ebx+ecx],mm0
cmp eax,[ebp-8]
jns genwin_two_loop2
finish_x:
emms
pop ebp
pop edi
pop esi
pop edx
pop ecx
pop ebx
pop eax
ret
finish_one:
shr eax,1
mov ebp,[timf2_pa]
add ebp,[timf2_pwr_int]
or ebx,ebx
jnz not_one_0
; No window used
one_0_loop:
movq mm1,[2*eax+esi]
movq [2*eax+edi],mm1
pmaddwd mm1,mm1
psllq mm1,32
movq [eax+ebp-4],mm1
sub eax,4
jns one_0_loop
; We have destroyed one data point in timf2_pwr_int. Put it back!
movsx eax,word [-8+edi]
imul eax,eax
movsx ebx,word [-6+edi]
imul ebx,ebx
add eax,ebx
mov [-4+ebp],eax
jmp short finish_x
not_one_0:
add ebx,ebx
cmp ebx,[fft1_size]
jnz not_one_2
; Sine squared window
one_2a_loop:
movq mm1,[2*eax+esi]
paddsw mm1,[2*eax+edi]
movq [2*eax+edi],mm1
pmaddwd mm1,mm1
psllq mm1,32
movq [eax+ebp-4],mm1
sub eax,4
jns one_2a_loop
; We have destroyed one data point in timf2_pwr_int. Put it back!
movsx eax,word [-8+edi]
imul eax,eax
movsx ebx,word [-6+edi]
imul ebx,ebx
add eax,ebx
mov [-4+ebp],eax
mov eax,[timf2_input_block]
mov edi,[timf2_pa]
add edi,eax
and edi,[timf2_mask]
add edi,edi
add edi,[timf2_shi]
mov esi,[fft1_backbuffer]
add eax,eax
add esi,eax
sub eax,8
one_2b_loop:
movq mm1,[eax+esi]
movq [eax+edi],mm1
sub eax,8
jns one_2b_loop
jmp near finish_x
; Window N==1 or N>2
not_one_2:
mov ebp,[fft1_inverted_mmxwin]
mov eax,[fft1_size]
sal eax,2
mov [ebp-4],eax
mov eax,[fft1_interleave_points]
sal eax,2
mov [ebp-8],eax
mov eax,[fft1_interleave_points]
sal eax,2
mov ebx,[timf2_pwr_int]
mov edx,[timf2_mask]
mov ecx,[timf2_pa]
mov edi,[timf2_shi]
add esi,eax
sub ecx,4
genwin_one_loop1:
movq mm0,[ebp+eax]
movq mm2,mm0
pmulhw mm0,[esi]
add ecx,4
pmullw mm2,[esi]
and ecx,edx
paddsw mm0,mm0
add eax,8
paddsw mm0,mm0
psraw mm2,14
add esi,8
paddsw mm0,mm2
movq [edi+2*ecx],mm0
pmaddwd mm0,mm0
movq [ebx+ecx],mm0
cmp eax,[ebp-4]
jnz genwin_one_loop1
genwin_one_loop2:
movq mm0,[ebp+eax]
movq mm2,mm0
pmulhw mm0,[esi]
add ecx,4
pmullw mm2,[esi]
and ecx,edx
paddsw mm0,mm0
sub eax,8
paddsw mm0,mm0
psraw mm2,14
add esi,8
paddsw mm0,mm2
movq [edi+2*ecx],mm0
pmaddwd mm0,mm0
movq [ebx+ecx],mm0
cmp eax,[ebp-8]
jns genwin_one_loop2
jmp near finish_x
mmx_fft1back_one
_mmx_fft1back_one
push eax
push ebx
push ecx
push edx
push esi
push edi
push ebp
mov ebp,[fft1_backbuffer]
mov eax,[fft1_size]
mov esi,[fft1_back_scramble]
mov edi,[fft1_split_shi]
mov ebx,0ffffH
add eax,eax
add eax,esi
mov [edi-16],ebx ;[edi-14]= 1 0 1 0
mov [edi-12],ebx
mov [edi-8],ebx
mov [edi-4],eax
mov eax,[esi]
mov ebx,eax
and eax,0ffffH
shr ebx,16
mov ecx,[esi+4]
mov edx,ecx
and ecx,0ffffH
shr edx,16
; The two first trivial loops are combined and
; run together with the unscrambling
fftback_one_1:
add esi,8
; t1=fft1_split_shi[ia ]+fft1_split_shi[ib ];
; t2=fft1_split_shi[ia+1]+fft1_split_shi[ib+1];
; r1=fft1_split_shi[ia+2]+fft1_split_shi[ib+2];
; r2=fft1_split_shi[ia+3]+fft1_split_shi[ib+3];
; t5=fft1_split_shi[ia ]-fft1_split_shi[ib ];
; t7=fft1_split_shi[ia+1]-fft1_split_shi[ib+1];
; r5=fft1_split_shi[ia+2]-fft1_split_shi[ib+2];
; r7=fft1_split_shi[ia+3]-fft1_split_shi[ib+3];
movq mm0,[edi+eax*8]
movq mm1,[edi+ecx*8]
movq mm2,mm0
paddsw mm0,[edi+ebx*8] ;mm0=r2 r1 t2 t1
movq mm3,mm1
psubsw mm2,[edi+ebx*8] ;mm2=r7 r5 t7 t5
movq mm4,mm0 ;mm4=r2 r1 t2 t1
; t3=fft1_split_shi[ic ]+fft1_split_shi[id ];
; t4=fft1_split_shi[ic+1]+fft1_split_shi[id+1];
; r3=fft1_split_shi[ic+2]+fft1_split_shi[id+2];
; r4=fft1_split_shi[ic+3]+fft1_split_shi[id+3];
; t10=fft1_split_shi[ic ]-fft1_split_shi[id ];
; t6= fft1_split_shi[ic+1]-fft1_split_shi[id+1];
; r10=fft1_split_shi[ic+2]-fft1_split_shi[id+2];
; r6= fft1_split_shi[ic+3]-fft1_split_shi[id+3];
paddsw mm1,[edi+edx*8] ;mm1=r4 r3 t4 t3
psubsw mm3,[edi+edx*8] ;mm3=r6 r10 t6 t10
mov eax,[esi]
mov ecx,[esi+4]
; fft1_tmp[k ]=t1+t3;
; fft1_tmp[k+1]=t2+t4;
; fft1_tmp[k+2]=r1+r3;
; fft1_tmp[k+3]=r2+r4;
; fft1_tmp[k+8]=t1-t3;
; fft1_tmp[k+9]=t2-t4;
; fft1_tmp[k+10]=r1-r3;
; fft1_tmp[k+11]=r2-r4;
;mm0=r2 r1 t2 t1
paddsw mm0,mm1 ;mm0=r2+r4 r1+r3 t2+t4 t1+t3
; t11=t5-t6
; t9=t7+t10
; r11=r5-r6
; r9=r7+r10
; t12=t5+t6
; t8=t7-t10
; r12=r5+r6
; r8=r7-r10
;mm2=r7 r5 t7 t5
;mm3=r6 r10 t6 t10
movq mm5,mm3 ;mm5=r6 r10 t6 t10
psllq mm3,16 ;mm3=r10 t6 t10 0
;mm4=r2 r1 t2 t1
psubsw mm4,mm1 ;mm4=r2-r4 r1-r3 t2-t4 t1-t3
psrlq mm5,16 ;mm5= 0 r6 r10 t6
;[edi-14]= 1 0 1 0
pand mm3,[edi-14] ;mm3=r10 0 t10 0
pand mm5,[edi-12] ;mm5= 0 r6 0 t6
mov ebx,eax
movq mm6,mm2 ;mm6=r7 r5 t7 t5
psubsw mm3,mm5 ;mm3=r10 -r6 t10 -t6
mov edx,ecx
movq [ebp],mm0
; fft1_tmp[k+4]=t12;
; fft1_tmp[k+5]=t8;
; fft1_tmp[k+6]=r12;
; fft1_tmp[k+7]=r8;
; fft1_tmp[k+12]=t11;
; fft1_tmp[k+13]=t9;
; fft1_tmp[k+14]=r11;
; fft1_tmp[k+15]=r9;
psubsw mm2,mm3 ;mm2=r8 r12 t8 t12
paddsw mm6,mm3 ;mm6=r9 r11 t9 t11
and ecx,0ffffH
and eax,0ffffH
shr ebx,16
movq [ebp+8],mm2
movq [ebp+24],mm6
shr edx,16
movq [ebp+16],mm4
add ebp,32
cmp esi,[edi-4]
jl near fftback_one_1
;
; Loops are run pairwise to save memory access.
; This also makes fft fit well to the mmx architecture.
; Use reserved memory (8*dwords) before fft1_mmxcosin as scratch area
; The first locations of this array are used in every iteration and these
; variables will be in the cash.
;m1=4;
;m2=16;
;inc=fft1_size/16;
;for(n=2; n<fft1_n-1; n+=2)
; {
; for(j=0; j<fft1_size; j+=m2)
; {
; itab=0;
; k=j;
;lp1:;
mov ebp,[fft1_mmxcosin]
mov eax,[fft1back_lowgain_n] ;eax=number of loops with g=0.5
mov ebx,eax
shr eax,1
mov [mem2],eax ;mem2 is no of loops with g=0.25
add eax,eax
sub ebx,eax
mov [mem1],ebx ;mem1 is no of loops with g=0.5
mov eax,[fft1_n]
sub eax,ebx
sub eax,2 ;eax is the number of loops left
sub eax,[fft1back_lowgain_n] ;eax=number of loops left with g=1
mov ecx,eax
shr eax,1
mov [N],eax ;[N]= number of dual loops width g=1
add eax,eax
sub ecx,eax ;ecx=1 if a single loop g=1 is needed
mov [mem3],ecx ;one final loop width g=1
mov dword [M1],8*4 ; [M1]=m1*8
mov eax,[fft1_size]
mov dword [M2],8*16 ; [M2]=m2*8
shr eax,1
mov [INCC],eax ; [INCC]=inc*8
shl eax,2
mov [SIZ2],eax ; [SIZ2]=fft1_size*2
shl eax,2
mov [SIZ8],eax
;***************************************************
;***************************************************
;***************************************************
; Full gain double loops
; There must be at least one and we make that one the last double loop.
dec dword [N]
mov eax,dword [N]
or eax,eax
jz near skip_fullgain_one
fftback_one_2:
mov dword [J],0 ;[J]=j*8
fftback_one_3:
mov edx,dword[J] ;edx=k*8
xor edi,edi ;edi=itab*8
mov ebx,[fft1_backbuffer] ;ebx=*x
mov ecx,[M1]
fftback_one_4:
lea esi,[ebx+edx] ;[esi]=x[ia]
; ia=k;
;//s1=fft1_mmxcosin[2*itab].s2p;
;//s1/=0x7fff;
; s1= fft1tab[2*itab].sin;
; c1= fft1tab[2*itab].cos;
; s2= fft1tab[itab].sin;
; c2= fft1tab[itab].cos;
movq mm0,[ebp+2*edi] ;cos -sin sin cos
; x0=fft1_tmp[4*ia ];
; y0=fft1_tmp[4*ia+1];
; u0=fft1_tmp[4*ia+2];
; w0=fft1_tmp[4*ia+3];
; ia+=m1;
; x1=fft1_tmp[4*ia ];
; y1=fft1_tmp[4*ia+1];
; u1=fft1_tmp[4*ia+2];
; w1=fft1_tmp[4*ia+3];
;mm0 = c1 -s1 s1 c1
movq mm1,[esi] ;mm1 = w0 u0 y0 x0
movq mm2,[esi+ecx ] ;mm2 = w1 u1 y1 x1
movq mm3,[esi+2*ecx] ;mm3 = w2 u2 y2 x2
add esi,ecx
movq mm4,mm2 ;mm4 = w1 u1 y1 x1
; t1= c1*x1+s1*y1;
; t2= c1*y1-s1*x1;
; r1= c1*u1+s1*w1;
; r2= c1*w1-s1*u1;
punpckldq mm2,mm2 ;mm2 = y1 x1 y1 x1
punpckhdq mm4,mm4 ;mm4 = w1 u1 w1 u1
pmaddwd mm2,mm0 ;mm2 = c1*y1-s1*x1 c1*x1+s1*y1
pmaddwd mm4,mm0 ;mm4 = c1*w1-s1*u1 c1*u1+s1*w1
movq mm6,mm1 ;mm6 = w0 u0 y0 x0
psrad mm2,15 ;mm2 = t2 t1
psrad mm4,15 ;mm4 = r2 r1
packssdw mm2,mm4 ;mm2 = r2 r1 t2 t1
; x4=x0+t1;
; y4=y0+t2;
; u4=u0+r1;
; w4=w0+r2;
;
; x6=x0-t1;
; y6=y0-t2;
; u6=u0-r1;
; w6=w0-r2;
; ia+=m1;
; x2=fft1_tmp[4*ia ];
; y2=fft1_tmp[4*ia+1];
; u2=fft1_tmp[4*ia+2];
; w2=fft1_tmp[4*ia+3];
; ia+=m1;
; x3=fft1_tmp[4*ia ];
; y3=fft1_tmp[4*ia+1];
; u3=fft1_tmp[4*ia+2];
; w3=fft1_tmp[4*ia+3];
;mm0 = c1 -s1 s1 c1
;mm1 = w0 u0 y0 x0
;mm2 = r2 r1 t2 t1
;mm3 = w2 u2 y2 x2
;mm4 = ?
;mm5 = ?
;mm6 = w0 u0 y0 x0
;mm7 = ?
movq mm7,[esi+2*ecx] ;mm7 = w3 u3 y3 x3
;mm3 = w2 u2 y2 x2
paddsw mm1,mm2 ;mm1 = w4 u4 y4 x4
psubsw mm6,mm2 ;mm6 = w6 u6 y6 x6
;mm0 = c1 -s1 s1 c1
movq mm5,mm7 ;mm5 = w3 u3 y3 x3
punpckldq mm7,mm7 ;mm2 = y3 x3 y3 x3
punpckhdq mm5,mm5 ;mm5 = w3 u3 w3 u3
; t3=c1*x3+s1*y3;
; t4=c1*y3-s1*x3;
; r3=c1*u3+s1*w3;
; r4=c1*w3-s1*u3;
pmaddwd mm7,mm0 ;mm7 = c1*y3-s1*x3 c1*x3+s1*y3
pmaddwd mm5,mm0 ;mm5 = c1*w3-s1*u3 c1*u3+s1*w3
;mm7 = t4 t3
;mm5 = r4 r3
sub esi,ecx
; x5=x2+t3;
; y5=y2+t4;
; u5=u2+r3;
; w5=w2+r4;
;
; x7=x2-t3;
; y7=y2-t4;
; u7=u2-r3;
; w7=w2-r4;
;mm0 = c1 -s1 s1 c1
;mm1 = w4 u4 y4 x4
;mm2 = ?
;mm3 = w2 u2 y2 x2
;mm4 = ?
;mm5 = r4 r3
;mm6 = w6 u6 y6 x6
;mm7 = t4 t3
psrad mm7,15 ;mm7 = t4 t3
psrad mm5,15 ;mm5 = r4 r3
packssdw mm7,mm5 ;mm7 = r4 r3 t4 t3
movq mm5,mm3 ;mm5 = w2 u2 y2 x2
paddsw mm3,mm7 ;mm3 = w5 u5 y5 x5
psubsw mm5,mm7 ;mm5 = w7 u7 y7 x7
;mm0 = c1 -s1 s1 c1
;mm1 = w4 u4 y4 x4
;mm2 = ?
;mm3 = w5 u5 y5 x5
;mm4 = ?
;mm5 = w7 u7 y7 x7
;mm6 = w6 u6 y6 x6
;mm7 = ?
movq mm0,[ebp+edi] ;mm0 = c2 -s2 s2 c2
; t5=c2*x5+s2*y5;
; t6=c2*y5-s2*x5;
; r5=c2*u5+s2*w5;
; r6=c2*w5-s2*u5;
movq mm2,mm3 ;mm2 = w5 u5 y5 x5
punpckldq mm3,mm3 ;mm3 = y5 x5 y5 x5
punpckhdq mm2,mm2 ;mm2 = w5 u5 w5 u5
pmaddwd mm3,mm0 ;mm3 = c2*y5-s2*x5 c2*x5+s2*y5
pmaddwd mm2,mm0 ;mm2 = c2*w5-s2*u5 c2*u5+s2*w5
movq mm4,mm3 ;mm3 = t6 t5
movq mm7,mm2 ;mm2 = r6 r5
psrad mm3,15 ;mm3 = t6 t5
psrad mm2,15 ;mm2 = r6 r5
packssdw mm3,mm2 ;mm3 = r6 r5 t6 t5
movq mm7,mm1 ;mm7 = w4 u4 y4 x4
paddsw mm1,mm3 ;mm1 = w4+r6 u4+r5 y4+t6 x4+t5
psubsw mm7,mm3 ;mm7 = w4-r6 u4-r5 y4-t6 x4-t5
; ia=k;
; ib=ia+m1;
; ic=ia+2*m1;
; id=ia+3*m1;
; fft1_tmp[4*ia ]=x4+t5;
; fft1_tmp[4*ia+1]=y4+t6;
; fft1_tmp[4*ia+2]=u4+r5;
; fft1_tmp[4*ia+3]=w4+r6;
; fft1_tmp[4*ic ]=x4-t5;
; fft1_tmp[4*ic+1]=y4-t6;
; fft1_tmp[4*ic+2]=u4-r5;
; fft1_tmp[4*ic+3]=w4-r6;
movq [esi],mm1
movq [esi+2*ecx],mm7
;mm0 = c1 -s1 s1 c1
;mm1 = ?
;mm2 = ?
;mm3 = ?
;mm4 = ?
;mm5 = w7 u7 y7 x7
;mm6 = w6 u6 y6 x6
;mm7 = ?
; t8=c2*x7+s2*y7;
; t7=c2*y7-s2*x7;
; r8=c2*u7+s2*w7;
; r7=c2*w7-s2*u7;
; fft1_tmp[4*ib ]=x6+t7;
; fft1_tmp[4*ib+1]=y6-t8;
; fft1_tmp[4*ib+2]=u6+r7;
; fft1_tmp[4*ib+3]=w6-r8;
;
; fft1_tmp[4*id ]=x6-t7;
; fft1_tmp[4*id+1]=y6+t8;
; fft1_tmp[4*id+2]=u6-r7;
; fft1_tmp[4*id+3]=w6+r8;
movq mm2,mm5 ;mm2 = w7 u7 y7 x7
punpckldq mm5,mm5 ;mm5 = y7 x7 y7 x7
punpckhdq mm2,mm2 ;mm2 = w7 u7 w7 u7
pmaddwd mm5,mm0 ;mm5 = c2*y7-s2*x7 c2*x7+s2*y7
pmaddwd mm2,mm0 ;mm2 = c2*w7-s2*u7 c2*u7+s2*w7
;mm5 = t7 t8
;mm2 = r7 r8
psrad mm5,15 ;mm5 = t7 t8
psrad mm2,15 ;mm2 = r7 r8
movq mm4,mm5
movq mm3,mm2
pxor mm0,mm0
punpckldq mm5,mm0 ;mm5 = t8
punpckldq mm2,mm0 ;mm2 = r8
punpckhdq mm4,mm0 ;mm4 = t7
punpckhdq mm3,mm0 ;mm3 = r7
packssdw mm4,mm3 ;mm4 = r7 t7
packssdw mm5,mm2 ;mm5 = r8 t8
psllq mm5,16 ;mm5 = r8 t8
psubsw mm4,mm5 ;mm4 = -r8 r7 -t8 t7
movq mm7,mm6 ;mm7 = w6 u6 y6 x6
paddsw mm6,mm4
psubsw mm7,mm4
add esi,ecx
movq [esi],mm6
movq [esi+2*ecx],mm7
sub esi,ecx
add edi,[INCC]
add edx,8
cmp edi,[SIZ2]
jb near fftback_one_4
;
; itab+=inc;
; k++;
; if(itab<fft1_size/4)goto lp1;
; }
; inc/=4;
; m1*=4;
; m2*=4;
; }
mov eax,[J]
add eax,[M2]
mov dword [J],eax
cmp eax,[SIZ8]
jb near fftback_one_3
shr dword [INCC],2
shl dword [M1],2
shl dword [M2],2
dec dword [N]
jnz near fftback_one_2
skip_fullgain_one:
;***************************************************
;***************************************************
;***************************************************
; g=0.5 double loop
cmp dword [mem1],0
jz near fftback_one_20
mov dword [J],0 ;[J]=j*8
fftback_one_13:
mov edx,dword[J] ;edx=k*8
xor edi,edi ;edi=itab*8
mov ebx,[fft1_backbuffer] ;ebx=*x
mov ecx,[M1]
fftback_one_14:
lea esi,[ebx+edx] ;[esi]=x[ia]
; ia=k;
;//s1=fft1_mmxcosin[2*itab].s2p;
;//s1/=0x7fff;
; s1= fft1tab[2*itab].sin;
; c1= fft1tab[2*itab].cos;
; s2= fft1tab[itab].sin;
; c2= fft1tab[itab].cos;
movq mm0,[ebp+2*edi] ;cos -sin sin cos
; x0=fft1_tmp[4*ia ];
; y0=fft1_tmp[4*ia+1];
; u0=fft1_tmp[4*ia+2];
; w0=fft1_tmp[4*ia+3];
; ia+=m1;
; x1=fft1_tmp[4*ia ];
; y1=fft1_tmp[4*ia+1];
; u1=fft1_tmp[4*ia+2];
; w1=fft1_tmp[4*ia+3];
;mm0 = c1 -s1 s1 c1
movq mm1,[esi] ;mm1 = w0 u0 y0 x0
movq mm2,[esi+ecx ] ;mm2 = w1 u1 y1 x1
movq mm3,[esi+2*ecx] ;mm3 = w2 u2 y2 x2
add esi,ecx
movq mm4,mm2 ;mm4 = w1 u1 y1 x1
; t1= c1*x1+s1*y1;
; t2= c1*y1-s1*x1;
; r1= c1*u1+s1*w1;
; r2= c1*w1-s1*u1;
punpckldq mm2,mm2 ;mm2 = y1 x1 y1 x1
punpckhdq mm4,mm4 ;mm4 = w1 u1 w1 u1
pmaddwd mm2,mm0 ;mm2 = c1*y1-s1*x1 c1*x1+s1*y1
pmaddwd mm4,mm0 ;mm4 = c1*w1-s1*u1 c1*u1+s1*w1
movq mm6,mm1 ;mm6 = w0 u0 y0 x0
psrad mm2,15 ;mm2 = t2 t1
psrad mm4,15 ;mm4 = r2 r1
packssdw mm2,mm4 ;mm2 = r2 r1 t2 t1
; x4=x0+t1;
; y4=y0+t2;
; u4=u0+r1;
; w4=w0+r2;
;
; x6=x0-t1;
; y6=y0-t2;
; u6=u0-r1;
; w6=w0-r2;
; ia+=m1;
; x2=fft1_tmp[4*ia ];
; y2=fft1_tmp[4*ia+1];
; u2=fft1_tmp[4*ia+2];
; w2=fft1_tmp[4*ia+3];
; ia+=m1;
; x3=fft1_tmp[4*ia ];
; y3=fft1_tmp[4*ia+1];
; u3=fft1_tmp[4*ia+2];
; w3=fft1_tmp[4*ia+3];
;mm0 = c1 -s1 s1 c1
;mm1 = w0 u0 y0 x0
;mm2 = r2 r1 t2 t1
;mm3 = w2 u2 y2 x2
;mm4 = ?
;mm5 = ?
;mm6 = w0 u0 y0 x0
;mm7 = ?
movq mm7,[esi+2*ecx] ;mm7 = w3 u3 y3 x3
;mm3 = w2 u2 y2 x2
paddsw mm1,mm2 ;mm1 = w4 u4 y4 x4
psubsw mm6,mm2 ;mm6 = w6 u6 y6 x6
;mm0 = c1 -s1 s1 c1
movq mm5,mm7 ;mm5 = w3 u3 y3 x3
punpckldq mm7,mm7 ;mm2 = y3 x3 y3 x3
punpckhdq mm5,mm5 ;mm5 = w3 u3 w3 u3
; t3=c1*x3+s1*y3;
; t4=c1*y3-s1*x3;
; r3=c1*u3+s1*w3;
; r4=c1*w3-s1*u3;
pmaddwd mm7,mm0 ;mm7 = c1*y3-s1*x3 c1*x3+s1*y3
pmaddwd mm5,mm0 ;mm5 = c1*w3-s1*u3 c1*u3+s1*w3
;mm7 = t4 t3
;mm5 = r4 r3
sub esi,ecx
; x5=x2+t3;
; y5=y2+t4;
; u5=u2+r3;
; w5=w2+r4;
;
; x7=x2-t3;
; y7=y2-t4;
; u7=u2-r3;
; w7=w2-r4;
;mm0 = c1 -s1 s1 c1
;mm1 = w4 u4 y4 x4
;mm2 = ?
;mm3 = w2 u2 y2 x2
;mm4 = ?
;mm5 = r4 r3
;mm6 = w6 u6 y6 x6
;mm7 = t4 t3
psrad mm7,15 ;mm7 = t4 t3
psrad mm5,15 ;mm5 = r4 r3
packssdw mm7,mm5 ;mm7 = r4 r3 t4 t3
movq mm5,mm3 ;mm5 = w2 u2 y2 x2
paddsw mm3,mm7 ;mm3 = w5 u5 y5 x5
psubsw mm5,mm7 ;mm5 = w7 u7 y7 x7
;mm0 = c1 -s1 s1 c1
;mm1 = w4 u4 y4 x4
;mm2 = ?
;mm3 = w5 u5 y5 x5
;mm4 = ?
;mm5 = w7 u7 y7 x7
;mm6 = w6 u6 y6 x6
;mm7 = ?
movq mm0,[ebp+edi] ;mm0 = c2 -s2 s2 c2
; t5=c2*x5+s2*y5;
; t6=c2*y5-s2*x5;
; r5=c2*u5+s2*w5;
; r6=c2*w5-s2*u5;
movq mm2,mm3 ;mm2 = w5 u5 y5 x5
punpckldq mm3,mm3 ;mm3 = y5 x5 y5 x5
punpckhdq mm2,mm2 ;mm2 = w5 u5 w5 u5
pmaddwd mm3,mm0 ;mm3 = c2*y5-s2*x5 c2*x5+s2*y5
pmaddwd mm2,mm0 ;mm2 = c2*w5-s2*u5 c2*u5+s2*w5
movq mm4,mm3 ;mm3 = t6 t5
movq mm7,mm2 ;mm2 = r6 r5
psrad mm3,15 ;mm3 = t6 t5
psrad mm2,15 ;mm2 = r6 r5
packssdw mm3,mm2 ;mm3 = r6 r5 t6 t5
movq mm7,mm1 ;mm7 = w4 u4 y4 x4
paddsw mm1,mm3 ;mm1 = w4+r6 u4+r5 y4+t6 x4+t5
psubsw mm7,mm3 ;mm7 = w4-r6 u4-r5 y4-t6 x4-t5
; ia=k;
; ib=ia+m1;
; ic=ia+2*m1;
; id=ia+3*m1;
; fft1_tmp[4*ia ]=x4+t5;
; fft1_tmp[4*ia+1]=y4+t6;
; fft1_tmp[4*ia+2]=u4+r5;
; fft1_tmp[4*ia+3]=w4+r6;
; fft1_tmp[4*ic ]=x4-t5;
; fft1_tmp[4*ic+1]=y4-t6;
; fft1_tmp[4*ic+2]=u4-r5;
; fft1_tmp[4*ic+3]=w4-r6;