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Updated directed frames to take advantage of the extra numerical bits so we don't have to delineate between positive and negative frame types

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This commit is contained in:
Jordan Sherer 2018-08-06 10:29:57 -04:00
parent 3318fa1005
commit 3e67f4ef1f
2 changed files with 15 additions and 21 deletions
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30
varicode.cpp
View File

@ -1290,7 +1290,7 @@ QString Varicode::packCompoundFrame(const QString &baseCallsign, const QString &
QString frame;
// needs to be a compound type...
if(type == FrameDataPadded || type == FrameDataUnpadded || type == FrameDirectedPositive || type == FrameDirectedNegative){
if(type == FrameDataPadded || type == FrameDataUnpadded || type == FrameDirected){
return frame;
}
@ -1333,7 +1333,7 @@ QStringList Varicode::unpackCompoundFrame(const QString &text, quint8 *pType, qu
quint8 packed_flag = Varicode::bitsToInt(bits.mid(0, 3));
// needs to be a beacon type...
if(packed_flag == FrameDataPadded || packed_flag == FrameDataUnpadded || packed_flag == FrameDirectedPositive || packed_flag == FrameDirectedNegative){
if(packed_flag == FrameDataPadded || packed_flag == FrameDataUnpadded || packed_flag == FrameDirected){
return unpacked;
}
@ -1435,10 +1435,10 @@ QString Varicode::packDirectedMessage(const QString &text, const QString &callsi
}
quint8 packed_cmd = directed_cmds[cmd];
quint8 packed_flag = inum < 31 ? FrameDirectedNegative : FrameDirectedPositive;
quint8 packed_extra = inum < 31 ? inum : inum - 31;
quint8 packed_flag = FrameDirected;
quint8 packed_extra = inum;
// [3][28][28][5],[3][5] = 72
// [3][28][28][5],[2][6] = 72
auto bits = (
Varicode::intToBits(packed_flag, 3) +
Varicode::intToBits(packed_from, 28) +
@ -1448,7 +1448,7 @@ QString Varicode::packDirectedMessage(const QString &text, const QString &callsi
if(pCmd) *pCmd = cmd;
if(n) *n = match.captured(0).length();
return Varicode::pack72bits(Varicode::bitsToInt(bits), packed_extra % 32);
return Varicode::pack72bits(Varicode::bitsToInt(bits), packed_extra % 64);
}
QStringList Varicode::unpackDirectedMessage(const QString &text, quint8 *pType){
@ -1458,17 +1458,12 @@ QStringList Varicode::unpackDirectedMessage(const QString &text, quint8 *pType){
return unpacked;
}
// [3][28][22][11],[3][5] = 72
// [3][28][22][11],[2][6] = 72
quint8 extra = 0;
auto bits = Varicode::intToBits(Varicode::unpack72bits(text, &extra), 64);
int numSign = 0;
quint8 packed_flag = Varicode::bitsToInt(bits.mid(0, 3));
if(packed_flag == FrameDirectedPositive){
numSign = 31;
} else if(packed_flag == FrameDirectedNegative){
numSign = 0;
} else {
if(packed_flag != FrameDirected){
return unpacked;
}
@ -1484,15 +1479,14 @@ QStringList Varicode::unpackDirectedMessage(const QString &text, quint8 *pType){
unpacked.append(to);
unpacked.append(cmd);
quint8 num = extra + numSign;
if(num != 0){
if(extra != 0){
// TODO: jsherer - should we decide which format to use on the command, or something else?
if(packed_cmd == directed_cmds[" PWR"]){
unpacked.append(Varicode::formatPWR(num-1));
unpacked.append(Varicode::formatPWR(extra-1));
} else if(packed_cmd == directed_cmds[" SNR"]) {
unpacked.append(Varicode::formatSNR((int)num-31));
unpacked.append(Varicode::formatSNR((int)extra-31));
} else {
unpacked.append(QString("%1").arg(num-31));
unpacked.append(QString("%1").arg(extra-31));
}
}

6
varicode.h
View File

@ -31,11 +31,11 @@ public:
FrameBeacon = 0, // [000]
FrameCompound = 1, // [001]
FrameCompoundDirected = 2, // [010]
FrameDirectedPositive = 3, // [011]
FrameDirectedNegative = 4, // [100]
FrameDirected = 3, // [011]
FrameReservedA = 4, // [100] <- Reserved for future use, likely an extension of one of these formats.
FrameDataUnpadded = 5, // [101]
FrameDataPadded = 6, // [110]
FrameReserved = 7, // [111] <- Reserved for future use, likely binary data / other formats.
FrameReservedB = 7, // [111] <- Reserved for future use, likely binary data / other formats.
};
static const quint8 FrameTypeMax = 7;