String open (const BigInteger& inputChannels, const BigInteger& outputChannels,
double /* sampleRate */, int /* bufferSizeSamples */) override
{
if (client == nullptr)
{
lastError = "No JACK client running";
return lastError;
}
lastError.clear();
close();
xruns = 0;
juce::jack_set_process_callback (client, processCallback, this);
juce::jack_set_port_connect_callback (client, portConnectCallback, this);
juce::jack_on_shutdown (client, shutdownCallback, this);
juce::jack_set_xrun_callback (client, xrunCallback, this);
juce::jack_activate (client);
deviceIsOpen = true;
if (! inputChannels.isZero())
{
for (JackPortIterator i (client, true); i.next();)
{
if (inputChannels [i.index] && i.clientName == getName())
{
int error = juce::jack_connect (client, i.ports[i.index], juce::jack_port_name ((jack_port_t*) inputPorts[i.index]));
if (error != 0)
JUCE_JACK_LOG ("Cannot connect input port " + String (i.index) + " (" + i.name + "), error " + String (error));
}
}
}
if (! outputChannels.isZero())
{
for (JackPortIterator i (client, false); i.next();)
{
if (outputChannels [i.index] && i.clientName == getName())
{
int error = juce::jack_connect (client, juce::jack_port_name ((jack_port_t*) outputPorts[i.index]), i.ports[i.index]);
if (error != 0)
JUCE_JACK_LOG ("Cannot connect output port " + String (i.index) + " (" + i.name + "), error " + String (error));
}
}
}
updateActivePorts();
return lastError;
}
void scanForDevices()
{
hasScanned = true;
inputNames.clear();
inputIds.clear();
outputNames.clear();
outputIds.clear();
if (juce_libjackHandle == nullptr)
{
juce_libjackHandle = dlopen ("libjack.so", RTLD_LAZY);
if (juce_libjackHandle == nullptr)
return;
}
jack_status_t status;
// open a dummy client
if (jack_client_t* const client = juce::jack_client_open ("JuceJackDummy", JackNoStartServer, &status))
{
// scan for output devices
for (JackPortIterator i (client, false); i.next();)
{
if (i.clientName != (JUCE_JACK_CLIENT_NAME) && ! inputNames.contains (i.clientName))
{
inputNames.add (i.clientName);
inputIds.add (i.ports [i.index]);
}
}
// scan for input devices
for (JackPortIterator i (client, true); i.next();)
{
if (i.clientName != (JUCE_JACK_CLIENT_NAME) && ! outputNames.contains (i.clientName))
{
outputNames.add (i.clientName);
outputIds.add (i.ports [i.index]);
}
}
juce::jack_client_close (client);
}
else
{
JUCE_JACK_LOG_STATUS (status);
}
}
StringArray getChannelNames (bool forInput) const
{
StringArray names;
for (JackPortIterator i (client, forInput); i.next();)
if (i.clientName == getName())
names.add (i.name.fromFirstOccurrenceOf (":", false, false));
return names;
}