private void AllocateFrequencyBands()
{
multibandManager = new MultibandManagerOneDemod(demodulators);
if (nfa >= nfb)
{
return;
}
int nDemodsMinusOne = demodulators.Count() - 1;
if (nDemodsMinusOne == 0)
{
demodulator.nfa = m_nfa;
demodulator.nfb = m_nfb;
return;
}
// defer assigning nfa and nfb until the demodulator starts
List <FrequencyBand> bands = new List <FrequencyBand>();
bands.Add(new FrequencyBand(m_nfa));
// iterate over all but first and last
double diff = m_nfb - m_nfa;
double range = diff / (nDemodsMinusOne + 1);
int num = nDemodsMinusOne + 1;
bool enable = true;
if (range < MIN_RANGE_HZ)
{ // limit multi-processing to wider than this
num = (int)(diff / MIN_RANGE_HZ);
if (num <= 1)
{
// the best we can do is put the whole range in one decoder
num = 1;
enable = false;
}
range = diff / num;
}
for (int i = 1; i <= nDemodsMinusOne; i++)
{
if (enable)
{
int lowBound = (int)(m_nfa + i * range);
if (lowBound >= m_nfb)
{
enable = false;
}
bands.Last().nfb = lowBound + FREQ_OVERLAP_HZ;
bands.Add(new FrequencyBand(lowBound - FREQ_OVERLAP_HZ));
}
enabled[i] = enable;
}
bands.Last().nfb = m_nfb;
multibandManager = new MultibandManager(bands.ToArray(), demodulators);
}
private XDft.RxSinkRepeater rxSinkRepeater; // need help repeating the RX audio to each decoder
// have to know at construction time how many decoders
public MultiDemodulatorWrapper(int instanceNumber, uint numDemodulators = 1)
{
if (numDemodulators > MAX_MULTIPROC)
{
numDemodulators = (uint)MAX_MULTIPROC;
}
if (numDemodulators == 0)
{
numDemodulators = 1;
}
demodulators = new XDft.Demodulator[numDemodulators];
wsjtSharedMems = new XDft.WsjtSharedMemory[numDemodulators];
wsjtExes = new XDft.WsjtExe[numDemodulators];
enabled = new bool[numDemodulators];
sharedMemoryKeys = new string[numDemodulators];
for (uint i = 0; i < numDemodulators; i++)
{
demodulators[i] = new XDft.Demodulator();
enabled[i] = true;
// The first decoder gets the same subdirectory name as a single decoder
string sharedMemoryKey = "DigiRite-" + instanceNumber.ToString();
if (i != 0) // subsequent ones get extra goop in their names
{
sharedMemoryKey += "-" + i.ToString();
}
wsjtSharedMems[i] = new XDft.WsjtSharedMemory(sharedMemoryKey, false);
if (!wsjtSharedMems[i].CreateWsjtSharedMem())
{
throw new System.Exception("Failed to create Shared Memory from " + sharedMemoryKey);
}
// The subprocess itself is managed by the XDft
wsjtExes[i] = new XDft.WsjtExe();
wsjtExes[i].AppDataName = sharedMemoryKey;
sharedMemoryKeys[i] = sharedMemoryKey;
if (!wsjtExes[i].CreateWsjtProcess(wsjtSharedMems[i]))
{
Dispose();
throw new System.Exception("Failed to launch wsjt exe");
}
}
multibandManager = new MultibandManagerOneDemod(demodulators);
}
