Added missing SND_SEQ_EVENT_CLOCK event (MIDI Real Time Clock message) f...

[hhromic]

...or timing ignoring.

The event ignoring mechanism is missing SND_SEQ_EVENT_CLOCK from ALSA, which is the event type associated with the MIDI message 0xF8 (Timing Clock). The used SND_SEQ_EVENT_TICK event is not an outside world MIDI message, but a special message generated by the ALSA synth.

I discovered this bug when working with a real Yamaha Clavinova Digital Piano, which was broadcasting 0xF8 messages and RtMidi wasn't properly ignoring them. This proposed patch correctly ignores that message, like the other drivers inside RtMidi.

[drewish]

Seems like this was applied twice:

parallels@ubuntu:/media/psf/Home/tmp/rtmidi$ make
g++ -O3 -Wall -Iinclude -fPIC -INONE/include  -D__LINUX_ALSA__ -c RtMidi.cpp -o RtMidi.o
RtMidi.cpp: In function ‘void* alsaMidiHandler(void*)’:
RtMidi.cpp:1219:5: error: duplicate case value
RtMidi.cpp:1215:5: error: previously used here
make: *** [RtMidi.o] Error 1

It looks like it's discussed over on this commit: 4034140

[drewish]

#9 should fix this.