mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-23 04:38:37 -05:00
f87f65fc3d
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/map65@581 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
110 lines
2.6 KiB
Fortran
110 lines
2.6 KiB
Fortran
subroutine spec(brightness,contrast,ngain,nspeed,a,a2)
|
|
|
|
parameter (NX=750,NY=130,NTOT=NX*NY)
|
|
|
|
! Input:
|
|
integer brightness,contrast !Display parameters
|
|
integer ngain !Digital gain for input audio
|
|
integer nspeed !Scrolling speed index
|
|
|
|
! Output:
|
|
integer*2 a(NTOT) !Pixel values for NX x NY array
|
|
integer*2 a2(NTOT) !Pixel values for NX x NY array
|
|
|
|
logical first
|
|
integer nstep(5)
|
|
integer b0,c0
|
|
|
|
! Could save memory by doing the averaging-by-7 (or 10?) of ss5 in symspec.
|
|
include 'spcom.f90'
|
|
real s(NFFT,NY),savg2(NFFT),tmp(NFFT)
|
|
include 'gcom1.f90'
|
|
include 'gcom2.f90'
|
|
include 'gcom3.f90'
|
|
include 'gcom4.f90'
|
|
data first/.true./
|
|
data nstep/28,20,14,10,7/ !Integration limits
|
|
save
|
|
|
|
if(first) then
|
|
df=96000.0/nfft
|
|
call zero(a,NX*NY/2)
|
|
call zero(a2,NX*NY/2)
|
|
first=.false.
|
|
endif
|
|
|
|
nadd=nstep(nspeed)
|
|
nlines=322/nadd
|
|
call zero(s,NFFT*NY)
|
|
k=0
|
|
do j=1,nlines
|
|
do n=1,nadd
|
|
k=k+1
|
|
do i=1,NFFT
|
|
s(i,j)=s(i,j) + ss5(k,i)
|
|
enddo
|
|
enddo
|
|
enddo
|
|
call zero(savg2,NFFT)
|
|
do j=1,nlines
|
|
call add(savg2,s(1,j),savg2,NFFT)
|
|
enddo
|
|
|
|
ia=0.08*NFFT
|
|
nn=0.84*NFFT
|
|
call pctile(savg2(ia),tmp,nn,45,base)
|
|
base=base/(nadd*nlines)
|
|
|
|
newpts=NX*nlines
|
|
do i=newpts+1,NX*NY
|
|
a(i)=a(i-newpts)
|
|
a2(i)=a2(i-newpts)
|
|
enddo
|
|
|
|
gain=40*sqrt(nstep(nspeed)/5.0) * 5.0**(0.01*contrast)
|
|
gamma=1.3 + 0.01*contrast
|
|
offset=(brightness+64.0)/2
|
|
fac=20.0/nadd
|
|
fac=fac*(0.1537/base)
|
|
foffset=0.001*(1270+nfcal)
|
|
nbpp=(nfb-nfa)*NFFT/(96.0*NX) !Bins per pixel in wideband (upper) waterfall
|
|
fselect=mousefqso + foffset
|
|
imid=nint(1000.0*(fselect-125.0+48.0)/df)
|
|
fmid=0.5*(nfa+nfb) + foffset
|
|
imid0=nint(1000.0*(fmid-125.0+48.0)/df) - nbpp/2 !Last term is empirical
|
|
i0=imid-375
|
|
ii0=imid0-375*nbpp
|
|
if(nfullspec.eq.1) then
|
|
nbpp=NFFT/NX
|
|
ii0=0
|
|
endif
|
|
|
|
k=0
|
|
do j=nlines,1,-1 !Reverse order so last will be on top
|
|
do i=1,NX
|
|
k=k+1
|
|
n=0
|
|
x=0.
|
|
iia=(i-1)*nbpp + ii0 + 1
|
|
iib=i*nbpp + ii0
|
|
do ii=iia,iib
|
|
x=max(x,s(ii,j))
|
|
enddo
|
|
x=fac*x
|
|
if(x.gt.0.0) n=(2.0*x)**gamma + offset
|
|
n=min(252,max(0,n))
|
|
a(k)=n
|
|
|
|
! Now do the lower (zoomed) waterfall with one FFT bin per pixel.
|
|
n=0
|
|
x=fac*s(i0+i-1,j)
|
|
if(x.gt.0.0) n=(3.0*x)**gamma + offset
|
|
n=min(252,max(0,n))
|
|
a2(k)=n
|
|
|
|
enddo
|
|
enddo
|
|
|
|
return
|
|
end subroutine spec
|