Paul Davis
0d9efc1148
This new design will work even when threads that need to receive messages from RT threads are created *after* the RT threads. The existing design would fail because the RT thread(s) would never be known the later created threads, and so signals emitted by the RT thread and causing call_slot() in the receiver would end up being enqueued using a lock-protected list. The new design ensures that communication always uses a lock-free FIFO instead
80 lines
2.2 KiB
C++
80 lines
2.2 KiB
C++
/*
|
|
Copyright (C) 2012 Paul Davis
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
*/
|
|
|
|
#include <pbd/failed_constructor.h>
|
|
|
|
#include "control_protocol/control_protocol.h"
|
|
#include "faderport.h"
|
|
|
|
using namespace ARDOUR;
|
|
using namespace ArdourSurface;
|
|
|
|
static ControlProtocol*
|
|
new_faderport_midi_protocol (ControlProtocolDescriptor* /*descriptor*/, Session* s)
|
|
{
|
|
FaderPort* fp;
|
|
|
|
try {
|
|
fp = new FaderPort (*s);
|
|
} catch (failed_constructor& err) {
|
|
return 0;
|
|
}
|
|
|
|
if (fp->set_active (true)) {
|
|
delete fp;
|
|
return 0;
|
|
}
|
|
|
|
return fp;
|
|
}
|
|
|
|
static void
|
|
delete_faderport_midi_protocol (ControlProtocolDescriptor* /*descriptor*/, ControlProtocol* cp)
|
|
{
|
|
delete cp;
|
|
}
|
|
|
|
static bool
|
|
probe_faderport_midi_protocol (ControlProtocolDescriptor* /*descriptor*/)
|
|
{
|
|
return FaderPort::probe ();
|
|
}
|
|
|
|
static void*
|
|
faderport_request_buffer_factory (uint32_t num_requests)
|
|
{
|
|
return FaderPort::request_factory (num_requests);
|
|
}
|
|
|
|
static ControlProtocolDescriptor faderport_midi_descriptor = {
|
|
/*name : */ "Faderport",
|
|
/*id : */ "uri://ardour.org/surfaces/faderport:0",
|
|
/*ptr : */ 0,
|
|
/*module : */ 0,
|
|
/*mandatory : */ 0,
|
|
/*supports_feedback : */ true,
|
|
/*probe : */ probe_faderport_midi_protocol,
|
|
/*initialize : */ new_faderport_midi_protocol,
|
|
/*destroy : */ delete_faderport_midi_protocol,
|
|
/*request_buffer_factory */ faderport_request_buffer_factory
|
|
};
|
|
|
|
extern "C" ARDOURSURFACE_API ControlProtocolDescriptor* protocol_descriptor () { return &faderport_midi_descriptor; }
|
|
|