Merged master 8748
This commit is contained in:
Jordan Sherer
@@ -1,187 +0,0 @@
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subroutine genmsk144(msg0,mygrid,ichk,bcontest,msgsent,i4tone,itype)
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! s8 + 48bits + s8 + 80 bits = 144 bits (72ms message duration)
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!
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! Encode an MSK144 message
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! Input:
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! - msg0 requested message to be transmitted
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! - ichk if ichk=1, return only msgsent
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! if ichk.ge.10000, set imsg=ichk-10000 for short msg
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! - msgsent message as it will be decoded
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! - i4tone array of audio tone values, 0 or 1
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! - itype message type
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! 1 = standard message "Call_1 Call_2 Grid/Rpt"
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! 2 = type 1 prefix
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! 3 = type 1 suffix
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! 4 = type 2 prefix
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! 5 = type 2 suffix
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! 6 = free text (up to 13 characters)
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! 7 = short message "<Call_1 Call2> Rpt"
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use iso_c_binding, only: c_loc,c_size_t
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use packjt
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use hashing
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character*22 msg0
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character*22 message !Message to be generated
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character*22 msgsent !Message as it will be received
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character*6 mygrid,g1,g2,g3,g4
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integer*4 i4Msg6BitWords(13) !72-bit message as 6-bit words
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integer*4 i4tone(144) !
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integer*1, target:: i1Msg8BitBytes(10) !80 bits represented in 10 bytes
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integer*1 codeword(128) !Encoded bits before re-ordering
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integer*1 msgbits(80) !72-bit message + 8-bit hash
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integer*1 bitseq(144) !Tone #s, data and sync (values 0-1)
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integer*1 i1hash(4)
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integer*1 s8(8)
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logical*1 bcontest
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real*8 pp(12)
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real*8 xi(864),xq(864),pi,twopi
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data s8/0,1,1,1,0,0,1,0/
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equivalence (ihash,i1hash)
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logical first,isgrid
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data first/.true./
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save
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if( first ) then
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first=.false.
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nsym=128
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pi=4.*atan(1.0)
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twopi=8.*atan(1.0)
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do i=1,12
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pp(i)=sin( (i-1)*pi/12 )
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enddo
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endif
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if(msg0(1:1).eq.'@') then !Generate a fixed tone
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read(msg0(2:5),*,end=1,err=1) nfreq !at specified frequency
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go to 2
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1 nfreq=1000
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2 i4tone(1)=nfreq
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else
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message=msg0
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do i=1,22
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if(ichar(message(i:i)).eq.0) then
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message(i:)=' '
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exit
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endif
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enddo
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do i=1,22 !Strip leading blanks
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if(message(1:1).ne.' ') exit
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message=message(i+1:)
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enddo
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if(message(1:1).eq.'<') then
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call genmsk40(message,msgsent,ichk,i4tone,itype)
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if(itype.lt.0) go to 999
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i4tone(41)=-40
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go to 999
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endif
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if(bcontest) then
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i0=index(message,' R ') + 3 !Check for ' R ' in message
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g1=message(i0:i0+3)//' '
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if(isgrid(g1)) then !Check for ' R grid'
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call grid2deg(g1,dlong,dlat)
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dlong=dlong+180.0
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if(dlong.gt.180.0) dlong=dlong-360.0
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dlat=-dlat
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call deg2grid(dlong,dlat,g2) !g2=antipodes grid
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message=message(1:i0-3)//g2(1:4) !Send message with g2
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endif
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endif
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call packmsg(message,i4Msg6BitWords,itype) !Pack into 12 6-bit bytes
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call unpackmsg(i4Msg6BitWords,msgsent) !Unpack to get msgsent
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if(bcontest) then
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i1=index(msgsent(8:22),' ') + 8
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g3=msgsent(i1:i1+3)//' '
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if(isgrid(g3)) then
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call azdist(mygrid,g3,0.d0,nAz,nEl,nDmiles,nDkm,nHotAz,nHotABetter)
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if(ndkm.gt.10000) then
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call grid2deg(g3,dlong,dlat)
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dlong=dlong+180.0
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if(dlong.gt.180.0) dlong=dlong-360.0
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dlat=-dlat
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call deg2grid(dlong,dlat,g4)
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msgsent=msgsent(1:i1-1)//'R '//g4(1:4)
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endif
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endif
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endif
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if(ichk.eq.1) go to 999
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i4=0
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ik=0
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im=0
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do i=1,12
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nn=i4Msg6BitWords(i)
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do j=1, 6
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ik=ik+1
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i4=i4+i4+iand(1,ishft(nn,j-6))
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i4=iand(i4,255)
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if(ik.eq.8) then
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im=im+1
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i1Msg8BitBytes(im)=i4
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ik=0
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endif
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enddo
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enddo
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ihash=nhash(c_loc(i1Msg8BitBytes),int(9,c_size_t),146)
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ihash=2*iand(ihash,32767) !Generate the 8-bit hash
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i1Msg8BitBytes(10)=i1hash(1) !CRC to byte 10
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mbit=0
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do i=1, 10
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i1=i1Msg8BitBytes(i)
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do ibit=1,8
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mbit=mbit+1
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msgbits(mbit)=iand(1,ishft(i1,ibit-8))
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enddo
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enddo
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call encode_msk144(msgbits,codeword)
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!Create 144-bit channel vector:
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!8-bit sync word + 48 bits + 8-bit sync word + 80 bits
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bitseq=0
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bitseq(1:8)=s8
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bitseq(9:56)=codeword(1:48)
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bitseq(57:64)=s8
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bitseq(65:144)=codeword(49:128)
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bitseq=2*bitseq-1
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xq(1:6)=bitseq(1)*pp(7:12) !first bit is mapped to 1st half-symbol on q
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do i=1,71
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is=(i-1)*12+7
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xq(is:is+11)=bitseq(2*i+1)*pp
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enddo
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xq(864-5:864)=bitseq(1)*pp(1:6) !last half symbol
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do i=1,72
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is=(i-1)*12+1
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xi(is:is+11)=bitseq(2*i)*pp
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enddo
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! Map I and Q to tones.
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i4tone=0
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do i=1,72
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i4tone(2*i-1)=(bitseq(2*i)*bitseq(2*i-1)+1)/2;
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i4tone(2*i)=-(bitseq(2*i)*bitseq(mod(2*i,144)+1)-1)/2;
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enddo
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endif
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! Flip polarity
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i4tone=-i4tone+1
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999 return
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end subroutine genmsk144
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logical function isgrid(g1)
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character*4 g1
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isgrid=g1(1:1).ge.'A' .and. g1(1:1).le.'R' .and. g1(2:2).ge.'A' .and. &
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g1(2:2).le.'R' .and. g1(3:3).ge.'0' .and. g1(3:3).le.'9' .and. &
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g1(4:4).ge.'0' .and. g1(4:4).le.'9'
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return
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end function isgrid
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@@ -1,14 +0,0 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>CFBundleExecutable</key>
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<string>@WSJTX_BUNDLE_NAME@</string>
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<key>CFBundleDisplayName</key>
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<string>@WSJTX_BUNDLE_NAME@</string>
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<key>NSPrincipalClass</key>
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<string>NSApplication</string>
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<key>NSHighResolutionCapable</key>
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<string>True</string>
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</dict>
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</plist>
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@@ -1,106 +0,0 @@
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=== AP Decoding
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With the QRA64 decoder Nico Palermo, IV3NWV, introduced a technique
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for decoding with the aid of information that naturally accumulates
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during a minimal QSO. This _a priori_ (AP) information can be
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used to increase the sensitivity of the decoder.
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When an operator decides to answer a CQ, he already knows his own
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callsign and that of his potential QSO partner. He therefore knows
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what to expect for at least 56 of the 72 message bits in a
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standard-format response to his call. The _WSJT-X_ decoders for QRA64
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and FT8 can use these and similar AP bits to decode messages
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containing them with higher sensitivity than otherwise possible.
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We have implemented AP decoding in slightly different ways in QRA64
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and FT8. To provide some explicit examples for users, we provide here
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a brief description of the FT8 behavior.
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AP decoding attempts effectively set the AP bits to the hypothesized
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values, as if they had been received correctly. The decoder then
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proceeds to determine whether the remaining message and parity bits
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are consistent with the hypothesized AP bits. If a codeword is found
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that the decoder judges to have high (but not overwhelmingly high)
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probability of being correct, a ? character is appended when the
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decoded message is displayed. To avoid misleading spots of occasional
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false decodes, messages so marked are not forwarded to {pskreporter}.
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Successful AP decodes are always labeled with an end-of-line indicator
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of the form aP, where P is one of the single-digit AP decoding types
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listed in Table 1. For example, an `a2` designator says that the
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successful decode used MyCall as hypothetically known information.
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[[AP_INFO_TABLE]]
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.AP information types
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[width="35%",cols="h10,<m20",frame=topbot,options="header"]
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|===============================================
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|P | Message components
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|1 | CQ     ?     ?
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|2 | MyCall     ?     ?
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|3 | MyCall DxCall     ?
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|4 | MyCall DxCall RRR
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|5 | MyCall DxCall 73
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|6 | MyCall DxCall RR73
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|===============================================
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Table 2 lists the six possible QSO states that are tracked by the
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WSJT-X auto-sequencer, along with the type of AP decoding that would
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be attempted in each state.
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[[AP_DECODING_TYPES_TABLE]]
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.AP decoding types for each QSO state
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[width="35%",cols="h10,<m20",frame=topbot,options="header"]
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|===========================================
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|State |AP type
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|CALLING | 1, 2
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|REPLYING | 2, 3
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|REPORT | 2, 3
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|ROGER_REPORT | 3, 4, 5, 6
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|ROGERS | 3, 4, 5, 6
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|SIGNOFF | 3, 1, 2
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|===========================================
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=== Decoded Lines
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Displayed information accompanying decoded messages generally includes UTC,
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signal-to-noise ratio in dB, time offset DT in seconds, and
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audio frequency in Hz. Some modes include additional information such
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as frequency offset from nominal (DF), frequency drift (Drift or F1),
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or distance (km or mi).
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There may also be some cryptic characters with special meanings
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summarized in the following Table:
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[[DECODED_LINES_TABLE]]
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.Notations used on decoded text lines
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[width="50%",cols="h,3*^",frame=topbot,options="header"]
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|===========================================
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|Mode |Mode character|Sync character|End of line information
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|FT8 | ~ | | ?   aP
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|JT4 | $ | *, # | f, fN, dNC
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|JT9 | @ | |
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|JT65 | # | |
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|JT65 VHF| # | *, # | f, fN, dNC
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|QRA64 | : | * | R
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|ISCAT | | * | M N C T
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|MSK144 | & | | N H E
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|===========================================
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Sync character::
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`*` - Normal sync +
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`#` - Alternate sync
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End of line information::
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`?` - Decoded with lower confidence +
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`a` - Decoded with aid of some a priori (AP) information +
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`C` - Confidence indicator [ISCAT and Deep Search; (0-9,*)] +
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`d` - Deep Search algorithm +
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`E` - Size of MSK eye diagram opening - if negative, the eye is closed +
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`f` - Franke-Taylor or Fano algorithm +
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`H` - Number of bit errors corrected +
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`M` - Message length (characters) +
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`N` - Number of Rx intervals or frames averaged +
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`P` - Number indicating type of AP information (Table 1, above) +
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`R` - Return code from QRA64 decoder +
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`T` - Length of analyzed region (s)
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@@ -0,0 +1,148 @@
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module ft8_decode
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parameter (MAXFOX=1000)
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character*12 c2fox(MAXFOX)
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character*4 g2fox(MAXFOX)
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integer nsnrfox(MAXFOX)
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integer nfreqfox(MAXFOX)
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integer n30fox(MAXFOX)
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integer n30z
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integer nfox
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type :: ft8_decoder
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procedure(ft8_decode_callback), pointer :: callback
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contains
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procedure :: decode
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end type ft8_decoder
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abstract interface
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subroutine ft8_decode_callback (this,sync,snr,dt,freq,decoded,nap,qual)
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import ft8_decoder
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implicit none
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class(ft8_decoder), intent(inout) :: this
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real, intent(in) :: sync
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integer, intent(in) :: snr
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real, intent(in) :: dt
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real, intent(in) :: freq
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character(len=37), intent(in) :: decoded
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integer, intent(in) :: nap
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real, intent(in) :: qual
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end subroutine ft8_decode_callback
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end interface
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contains
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subroutine decode(this,callback,iwave,nQSOProgress,nfqso,nftx,newdat, &
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nutc,nfa,nfb,nexp_decode,ndepth,nagain,lft8apon,lapcqonly,napwid, &
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mycall12,mygrid6,hiscall12,hisgrid6)
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! use wavhdr
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use timer_module, only: timer
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include 'ft8/ft8_params.f90'
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! type(hdr) h
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class(ft8_decoder), intent(inout) :: this
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procedure(ft8_decode_callback) :: callback
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real s(NH1,NHSYM)
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real sbase(NH1)
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real candidate(3,200)
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real dd(15*12000)
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logical, intent(in) :: lft8apon,lapcqonly,nagain
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logical newdat,lsubtract,ldupe,bcontest
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character*12 mycall12, hiscall12
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character*6 mygrid6,hisgrid6
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integer*2 iwave(15*12000)
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integer apsym(KK)
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character datetime*13,message*22,msg37*37
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character*22 allmessages(100)
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integer allsnrs(100)
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save s,dd
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bcontest=iand(nexp_decode,128).ne.0
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this%callback => callback
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write(datetime,1001) nutc !### TEMPORARY ###
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1001 format("000000_",i6.6)
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call ft8apset(mycall12,mygrid6,hiscall12,hisgrid6,bcontest,apsym,iaptype)
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dd=iwave
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ndecodes=0
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allmessages=' '
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allsnrs=0
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ifa=nfa
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ifb=nfb
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if(nagain) then
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ifa=nfqso-10
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ifb=nfqso+10
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endif
|
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|
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! For now:
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! ndepth=1: no subtraction, 1 pass, belief propagation only
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! ndepth=2: subtraction, 3 passes, belief propagation only
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! ndepth=3: subtraction, 3 passes, bp+osd
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if(ndepth.eq.1) npass=1
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if(ndepth.ge.2) npass=3
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do ipass=1,npass
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newdat=.true. ! Is this a problem? I hijacked newdat.
|
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syncmin=1.5
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if(ipass.eq.1) then
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lsubtract=.true.
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if(ndepth.eq.1) lsubtract=.false.
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elseif(ipass.eq.2) then
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n2=ndecodes
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if(ndecodes.eq.0) cycle
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lsubtract=.true.
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elseif(ipass.eq.3) then
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if((ndecodes-n2).eq.0) cycle
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lsubtract=.false.
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endif
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||||
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call timer('sync8 ',0)
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call sync8(dd,ifa,ifb,syncmin,nfqso,s,candidate,ncand,sbase)
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call timer('sync8 ',1)
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do icand=1,ncand
|
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sync=candidate(3,icand)
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f1=candidate(1,icand)
|
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xdt=candidate(2,icand)
|
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xbase=10.0**(0.1*(sbase(nint(f1/3.125))-40.0))
|
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nsnr0=min(99,nint(10.0*log10(sync) - 25.5)) !### empirical ###
|
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call timer('ft8b ',0)
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||||
call ft8b(dd,newdat,nQSOProgress,nfqso,nftx,ndepth,lft8apon, &
|
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lapcqonly,napwid,lsubtract,nagain,iaptype,mycall12,mygrid6, &
|
||||
hiscall12,bcontest,sync,f1,xdt,xbase,apsym,nharderrors,dmin, &
|
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nbadcrc,iappass,iera,msg37,xsnr)
|
||||
message=msg37(1:22) !###
|
||||
nsnr=nint(xsnr)
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xdt=xdt-0.5
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||||
hd=nharderrors+dmin
|
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call timer('ft8b ',1)
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if(nbadcrc.eq.0) then
|
||||
! call jtmsg(message,iflag)
|
||||
if(bcontest) then
|
||||
call fix_contest_msg(mygrid6,message)
|
||||
msg37(1:22)=message
|
||||
endif
|
||||
! if(iand(iflag,31).ne.0) message(22:22)='?'
|
||||
ldupe=.false.
|
||||
do id=1,ndecodes
|
||||
if(message.eq.allmessages(id).and.nsnr.le.allsnrs(id)) ldupe=.true.
|
||||
enddo
|
||||
if(.not.ldupe) then
|
||||
ndecodes=ndecodes+1
|
||||
allmessages(ndecodes)=message
|
||||
allsnrs(ndecodes)=nsnr
|
||||
endif
|
||||
! write(81,1004) nutc,ncand,icand,ipass,iaptype,iappass, &
|
||||
! nharderrors,dmin,hd,min(sync,999.0),nint(xsnr), &
|
||||
! xdt,nint(f1),message
|
||||
!1004 format(i6.6,2i4,3i2,i3,3f6.1,i4,f6.2,i5,2x,a22)
|
||||
! flush(81)
|
||||
if(.not.ldupe .and. associated(this%callback)) then
|
||||
qual=1.0-(nharderrors+dmin)/60.0 ! scale qual to [0.0,1.0]
|
||||
call this%callback(sync,nsnr,xdt,f1,msg37,iaptype,qual)
|
||||
endif
|
||||
endif
|
||||
enddo
|
||||
enddo
|
||||
return
|
||||
end subroutine decode
|
||||
|
||||
end module ft8_decode
|
||||
@@ -0,0 +1,217 @@
|
||||
#include "decodedtext.h"
|
||||
|
||||
#include <QStringList>
|
||||
#include <QRegularExpression>
|
||||
#include <QDebug>
|
||||
|
||||
extern "C" {
|
||||
bool stdmsg_(char const * msg, bool contest_mode, char const * mygrid, fortran_charlen_t, fortran_charlen_t);
|
||||
}
|
||||
|
||||
namespace
|
||||
{
|
||||
QRegularExpression words_re {R"(^(?:(?<word1>(?:CQ|DE|QRZ)(?:\s?DX|\s(?:[A-Z]{2}|\d{3}))|[A-Z0-9/]+)\s)(?:(?<word2>[A-Z0-9/]+)(?:\s(?<word3>[-+A-Z0-9]+)(?:\s(?<word4>(?:OOO|(?!RR73)[A-R]{2}[0-9]{2})))?)?)?)"};
|
||||
}
|
||||
|
||||
DecodedText::DecodedText (QString const& the_string, bool contest_mode, QString const& my_grid)
|
||||
: string_ {the_string.left (the_string.indexOf (QChar::Nbsp))} // discard appended info
|
||||
, padding_ {string_.indexOf (" ") > 4 ? 2 : 0} // allow for
|
||||
// seconds
|
||||
, contest_mode_ {contest_mode}
|
||||
, message_ {string_.mid (column_qsoText + padding_).trimmed ()}
|
||||
, is_standard_ {false}
|
||||
{
|
||||
if (message_.length() >= 1)
|
||||
{
|
||||
message_ = message_.left (21).remove (QRegularExpression {"[<>]"});
|
||||
int i1 = message_.indexOf ('\r');
|
||||
if (i1 > 0)
|
||||
{
|
||||
message_ = message_.left (i1 - 1);
|
||||
}
|
||||
if (message_.contains (QRegularExpression {"^(CQ|QRZ)\\s"}))
|
||||
{
|
||||
// TODO this magic position 16 is guaranteed to be after the
|
||||
// last space in a decoded CQ or QRZ message but before any
|
||||
// appended DXCC entity name or worked before information
|
||||
auto eom_pos = message_.indexOf (' ', 16);
|
||||
// we always want at least the characters to position 16
|
||||
if (eom_pos < 16) eom_pos = message_.size () - 1;
|
||||
// remove DXCC entity and worked B4 status. TODO need a better way to do this
|
||||
message_ = message_.left (eom_pos + 1);
|
||||
}
|
||||
// stdmsg is a fortran routine that packs the text, unpacks it
|
||||
// and compares the result
|
||||
auto message_c_string = message_.toLocal8Bit ();
|
||||
message_c_string += QByteArray {22 - message_c_string.size (), ' '};
|
||||
auto grid_c_string = my_grid.toLocal8Bit ();
|
||||
grid_c_string += QByteArray {6 - grid_c_string.size (), ' '};
|
||||
is_standard_ = stdmsg_ (message_c_string.constData ()
|
||||
, contest_mode_
|
||||
, grid_c_string.constData ()
|
||||
, 22, 6);
|
||||
}
|
||||
};
|
||||
|
||||
QStringList DecodedText::messageWords () const
|
||||
{
|
||||
if (is_standard_)
|
||||
{
|
||||
// extract up to the first four message words
|
||||
return words_re.match (message_).capturedTexts ();
|
||||
}
|
||||
// simple word split for free text messages
|
||||
auto words = message_.split (' ', QString::SkipEmptyParts);
|
||||
// add whole message as item 0 to mimic RE capture list
|
||||
words.prepend (message_);
|
||||
return words;
|
||||
}
|
||||
|
||||
QString DecodedText::CQersCall() const
|
||||
{
|
||||
QRegularExpression callsign_re {R"(^(CQ|DE|QRZ)(\s?DX|\s([A-Z]{2}|\d{3}))?\s(?<callsign>[A-Z0-9/]{2,})(\s[A-R]{2}[0-9]{2})?)"};
|
||||
return callsign_re.match (message_).captured ("callsign");
|
||||
}
|
||||
|
||||
|
||||
bool DecodedText::isJT65() const
|
||||
{
|
||||
return string_.indexOf("#") == column_mode + padding_;
|
||||
}
|
||||
|
||||
bool DecodedText::isJT9() const
|
||||
{
|
||||
return string_.indexOf("@") == column_mode + padding_;
|
||||
}
|
||||
|
||||
bool DecodedText::isTX() const
|
||||
{
|
||||
int i = string_.indexOf("Tx");
|
||||
return (i >= 0 && i < 15); // TODO guessing those numbers. Does Tx ever move?
|
||||
}
|
||||
|
||||
bool DecodedText::isLowConfidence () const
|
||||
{
|
||||
return QChar {'?'} == string_.mid (padding_ + column_qsoText + 21, 1);
|
||||
}
|
||||
|
||||
int DecodedText::frequencyOffset() const
|
||||
{
|
||||
return string_.mid(column_freq + padding_,4).toInt();
|
||||
}
|
||||
|
||||
int DecodedText::snr() const
|
||||
{
|
||||
int i1=string_.indexOf(" ")+1;
|
||||
return string_.mid(i1,3).toInt();
|
||||
}
|
||||
|
||||
float DecodedText::dt() const
|
||||
{
|
||||
return string_.mid(column_dt + padding_,5).toFloat();
|
||||
}
|
||||
|
||||
/*
|
||||
2343 -11 0.8 1259 # YV6BFE F6GUU R-08
|
||||
2343 -19 0.3 718 # VE6WQ SQ2NIJ -14
|
||||
2343 -7 0.3 815 # KK4DSD W7VP -16
|
||||
2343 -13 0.1 3627 @ CT1FBK IK5YZT R+02
|
||||
|
||||
0605 Tx 1259 # CQ VK3ACF QF22
|
||||
*/
|
||||
|
||||
// find and extract any report. Returns true if this is a standard message
|
||||
bool DecodedText::report(QString const& myBaseCall, QString const& dxBaseCall, /*mod*/QString& report) const
|
||||
{
|
||||
if (message_.size () < 1) return false;
|
||||
|
||||
QStringList const& w = message_.split(" ",QString::SkipEmptyParts);
|
||||
if (w.size ()
|
||||
&& is_standard_ && (w[0] == myBaseCall
|
||||
|| w[0].endsWith ("/" + myBaseCall)
|
||||
|| w[0].startsWith (myBaseCall + "/")
|
||||
|| (w.size () > 1 && !dxBaseCall.isEmpty ()
|
||||
&& (w[1] == dxBaseCall
|
||||
|| w[1].endsWith ("/" + dxBaseCall)
|
||||
|| w[1].startsWith (dxBaseCall + "/")))))
|
||||
{
|
||||
QString tt="";
|
||||
if(w.size() > 2) tt=w[2];
|
||||
bool ok;
|
||||
auto i1=tt.toInt(&ok);
|
||||
if (ok and i1>=-50 and i1<50)
|
||||
{
|
||||
report = tt;
|
||||
}
|
||||
else
|
||||
{
|
||||
if (tt.mid(0,1)=="R")
|
||||
{
|
||||
i1=tt.mid(1).toInt(&ok);
|
||||
if(ok and i1>=-50 and i1<50)
|
||||
{
|
||||
report = tt.mid(1);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
return is_standard_;
|
||||
}
|
||||
|
||||
// get the first text word, usually the call
|
||||
QString DecodedText::call() const
|
||||
{
|
||||
return words_re.match (message_).captured ("word1");
|
||||
}
|
||||
|
||||
// get the second word, most likely the de call and the third word, most likely grid
|
||||
void DecodedText::deCallAndGrid(/*out*/QString& call, QString& grid) const
|
||||
{
|
||||
auto const& match = words_re.match (message_);
|
||||
call = match.captured ("word2");
|
||||
grid = match.captured ("word3");
|
||||
if (contest_mode_ && "R" == grid)
|
||||
{
|
||||
grid = match.captured ("word4");
|
||||
}
|
||||
}
|
||||
|
||||
unsigned DecodedText::timeInSeconds() const
|
||||
{
|
||||
return 3600 * string_.mid (column_time, 2).toUInt ()
|
||||
+ 60 * string_.mid (column_time + 2, 2).toUInt()
|
||||
+ (padding_ ? string_.mid (column_time + 2 + padding_, 2).toUInt () : 0U);
|
||||
}
|
||||
|
||||
/*
|
||||
2343 -11 0.8 1259 # YV6BFE F6GUU R-08
|
||||
2343 -19 0.3 718 # VE6WQ SQ2NIJ -14
|
||||
2343 -7 0.3 815 # KK4DSD W7VP -16
|
||||
2343 -13 0.1 3627 @ CT1FBK IK5YZT R+02
|
||||
|
||||
0605 Tx 1259 # CQ VK3ACF QF22
|
||||
*/
|
||||
|
||||
QString DecodedText::report() const // returns a string of the SNR field with a leading + or - followed by two digits
|
||||
{
|
||||
int sr = snr();
|
||||
if (sr<-50)
|
||||
sr = -50;
|
||||
else
|
||||
if (sr > 49)
|
||||
sr = 49;
|
||||
|
||||
QString rpt;
|
||||
rpt.sprintf("%d",abs(sr));
|
||||
if (sr > 9)
|
||||
rpt = "+" + rpt;
|
||||
else
|
||||
if (sr >= 0)
|
||||
rpt = "+0" + rpt;
|
||||
else
|
||||
if (sr >= -9)
|
||||
rpt = "-0" + rpt;
|
||||
else
|
||||
rpt = "-" + rpt;
|
||||
return rpt;
|
||||
}
|
||||
Reference in New Issue
Block a user