JackAudioIODevice (const String& deviceName,
const String& inId,
const String& outId)
: AudioIODevice (deviceName, "JACK"),
inputId (inId),
outputId (outId),
deviceIsOpen (false),
callback (nullptr),
totalNumberOfInputChannels (0),
totalNumberOfOutputChannels (0)
{
jassert (deviceName.isNotEmpty());
jack_status_t status;
client = juce::jack_client_open (JUCE_JACK_CLIENT_NAME, JackNoStartServer, &status);
if (client == nullptr)
{
JUCE_JACK_LOG_STATUS (status);
}
else
{
juce::jack_set_error_function (errorCallback);
// open input ports
const StringArray inputChannels (getInputChannelNames());
for (int i = 0; i < inputChannels.size(); ++i)
{
String inputName;
inputName << "in_" << ++totalNumberOfInputChannels;
inputPorts.add (juce::jack_port_register (client, inputName.toUTF8(),
JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput, 0));
}
// open output ports
const StringArray outputChannels (getOutputChannelNames());
for (int i = 0; i < outputChannels.size(); ++i)
{
String outputName;
outputName << "out_" << ++totalNumberOfOutputChannels;
outputPorts.add (juce::jack_port_register (client, outputName.toUTF8(),
JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, 0));
}
inChans.calloc (totalNumberOfInputChannels + 2);
outChans.calloc (totalNumberOfOutputChannels + 2);
}
}
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);
}
}
