JackMeter: fix build with older jack versions

c++/jack_utils.h

@@ -20,9 +20,12 @@
 
 #include <jack/jack.h>
 #include <jack/midiport.h>
-#include <jack/session.h>
 #include <jack/transport.h>
 
+#ifdef HAVE_JACKSESSION
+#include <jack/session.h>
+#endif
+
 #include <cstring>
 #include <string>
 #include <vector>

c++/jackmeter/Makefile

@@ -21,6 +21,12 @@ OBJS = \
 	jackmeter.o \
 	../widgets/digitalpeakmeter.o
 
+HAVE_JACKSESSION = $(shell pkg-config --atleast-version=0.121.0 jack && echo true)
+
+ifeq ($(HAVE_JACKSESSION),true)
+BUILD_FLAGS += -DHAVE_JACKSESSION
+endif
+
 # --------------------------------------------------------------
 
 all: cadence_jackmeter

c++/jackmeter/jackmeter.cpp

@@ -72,6 +72,7 @@ void port_callback(jack_port_id_t, jack_port_id_t, int, void*)
     x_needReconnect = true;
 }
 
+#ifdef HAVE_JACKSESSION
 void session_callback(jack_session_event_t* event, void* arg)
 {
 #ifdef Q_OS_LINUX
@@ -90,6 +91,7 @@ void session_callback(jack_session_event_t* event, void* arg)
 
     jack_session_event_free(event);
 }
+#endif
 
 // -------------------------------
 // helpers
@@ -188,7 +190,11 @@ int main(int argc, char* argv[])
 
     // JACK initialization
     jack_status_t jStatus;
+#ifdef HAVE_JACKSESSION
     jack_options_t jOptions = static_cast<JackOptions>(JackNoStartServer|JackUseExactName|JackSessionID);
+#else
+    jack_options_t jOptions = static_cast<JackOptions>(JackNoStartServer|JackUseExactName);
+#endif
     jClient = jack_client_open("M", jOptions, &jStatus);
 
     if (! jClient)
@@ -205,7 +211,9 @@ int main(int argc, char* argv[])
 
     jack_set_process_callback(jClient, process_callback, nullptr);
     jack_set_port_connect_callback(jClient, port_callback, nullptr);
+#ifdef HAVE_JACKSESSION
     jack_set_session_callback(jClient, session_callback, argv[0]);
+#endif
     jack_activate(jClient);
 
     reconnect_inputs();

src/catia.py

@@ -44,6 +44,7 @@ if LINUX:
         if os.path.exists(os.path.join(iPATH, "aconnect")):
             from subprocess import getoutput
             haveALSA = True
+            print("Using experimental ALSA-MIDI support")
             break
     else:
         haveALSA = False

src/patchcanvas.py

@@ -296,7 +296,7 @@ def setFeatures(new_features):
 
 def init(appName, scene, callback, debug=False):
     if debug:
-        qDebug("PatchCanvas::init(%s, %s, %s)" % (scene, callback, bool2str(debug)))
+        qDebug("PatchCanvas::init(\"%s\", %s, %s, %s)" % (appName, scene, callback, bool2str(debug)))
 
     if canvas.initiated:
         qCritical("PatchCanvas::init() - already initiated")