'libs/evoral' - cast the returned pointers from malloc() / g_ptr_array_index() etc...

[ardour.git] / libs / ardour / ticker.cc

diff --git a/libs/ardour/ticker.cc b/libs/ardour/ticker.cc
index 734b4013563627e952bb5f7ffd5e2318a656f1aa..5d078952a1f01db16f0fa766a699022568717880 100644 (file)
--- a/libs/ardour/ticker.cc
+++ b/libs/ardour/ticker.cc
@@ -20,6 +20,7 @@
 #include "pbd/stacktrace.h"
 
 #include "midi++/port.h"
+#include "midi++/jack_midi_port.h"
 #include "midi++/manager.h"
 
 #include "evoral/midi_events.h"
@@ -152,13 +153,13 @@ void MidiClockTicker::tick (const framepos_t& transport_frame)
                double next_tick = _last_tick + one_ppqn_in_frames (transport_frame);
                frameoffset_t next_tick_offset = llrint (next_tick) - transport_frame;
 
+               MIDI::JackMIDIPort* mp = dynamic_cast<MIDI::JackMIDIPort*> (_midi_port);
+               
                DEBUG_TRACE (PBD::DEBUG::MidiClock,
                             string_compose ("Transport: %1, last tick time: %2, next tick time: %3, offset: %4, cycle length: %5\n",
-                                            transport_frame, _last_tick, next_tick, next_tick_offset, _midi_port->nframes_this_cycle()
-                                    )
-                       );
+                                            transport_frame, _last_tick, next_tick, next_tick_offset, mp ? mp->nframes_this_cycle() : 0));
 
-               if (next_tick_offset >= _midi_port->nframes_this_cycle()) {
+               if (!mp || (next_tick_offset >= mp->nframes_this_cycle())) {
                        break;
                }