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
102 lines
2.9 KiB
C++
102 lines
2.9 KiB
C++
/*
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Copyright (C) 2006,2007 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <stdexcept>
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#include "pbd/error.h"
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#include "ardour/rc_configuration.h"
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#include "control_protocol/control_protocol.h"
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#include "mackie_control_protocol.h"
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using namespace ARDOUR;
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using namespace PBD;
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using namespace std;
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using namespace ArdourSurface;
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using namespace Mackie;
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static ControlProtocol*
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new_mackie_protocol (ControlProtocolDescriptor*, Session* s)
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{
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MackieControlProtocol* mcp = 0;
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try {
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mcp = new MackieControlProtocol (*s);
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/* do not set active here - wait for set_state() */
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}
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catch (exception & e) {
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error << "Error instantiating MackieControlProtocol: " << e.what() << endmsg;
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delete mcp;
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mcp = 0;
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}
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return mcp;
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}
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static void
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delete_mackie_protocol (ControlProtocolDescriptor*, ControlProtocol* cp)
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{
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try
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{
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delete cp;
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}
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catch ( exception & e )
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{
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cout << "Exception caught trying to destroy MackieControlProtocol: " << e.what() << endl;
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}
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}
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/**
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This is called on startup to check whether the lib should be loaded.
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So anything that can be changed in the UI should not be used here to
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prevent loading of the lib.
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*/
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static bool
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probe_mackie_protocol (ControlProtocolDescriptor*)
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{
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return MackieControlProtocol::probe();
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}
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static void*
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mackie_request_buffer_factory (uint32_t num_requests)
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{
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return MackieControlProtocol::request_factory (num_requests);
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}
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// Field names commented out by JE - 06-01-2010
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static ControlProtocolDescriptor mackie_descriptor = {
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/*name : */ "Mackie",
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/*id : */ "uri://ardour.org/surfaces/mackie:0",
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/*ptr : */ 0,
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/*module : */ 0,
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/*mandatory : */ 0,
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// actually, the surface does support feedback, but all this
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// flag does is show a submenu on the UI, which is useless for the mackie
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// because feedback is always on. In any case, who'd want to use the
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// mcu without the motorised sliders doing their thing?
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/*supports_feedback : */ false,
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/*probe : */ probe_mackie_protocol,
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/*initialize : */ new_mackie_protocol,
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/*destroy : */ delete_mackie_protocol,
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/*request_buffer_factory */ mackie_request_buffer_factory
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};
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extern "C" ARDOURSURFACE_API ControlProtocolDescriptor* protocol_descriptor () { return &mackie_descriptor; }
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