171 lines
3.9 KiB
C++
171 lines
3.9 KiB
C++
/*
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Copyright (C) 2009 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 <cstdlib>
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#include <sigc++/signal.h>
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#include "pbd/pthread_utils.h"
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#include "ardour/async_midi_port.h"
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#include "ardour/debug.h"
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#include "ardour/audioengine.h"
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#include "ardour/midi_port.h"
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#include "ardour/midiport_manager.h"
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#include "ardour/midi_ui.h"
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#include "ardour/session.h"
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#include "ardour/session_event.h"
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#include "ardour/types.h"
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using namespace std;
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using namespace ARDOUR;
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using namespace PBD;
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using namespace Glib;
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#include "i18n.h"
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MidiControlUI* MidiControlUI::_instance = 0;
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#include "pbd/abstract_ui.cc" /* instantiate the template */
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MidiControlUI::MidiControlUI (Session& s)
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: AbstractUI<MidiUIRequest> (X_("midiui"))
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, _session (s)
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{
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_instance = this;
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}
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MidiControlUI::~MidiControlUI ()
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{
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/* stop the thread */
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quit ();
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/* drop all ports as GIO::Sources */
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clear_ports ();
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/* we no longer exist */
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_instance = 0;
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}
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void
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MidiControlUI::do_request (MidiUIRequest* req)
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{
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if (req->type == Quit) {
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BaseUI::quit ();
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} else if (req->type == CallSlot) {
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req->the_slot ();
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}
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}
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bool
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MidiControlUI::midi_input_handler (IOCondition ioc, AsyncMIDIPort* port)
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{
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DEBUG_TRACE (DEBUG::MidiIO, string_compose ("something happend on %1\n", ((ARDOUR::Port*)port)->name()));
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if (ioc & ~IO_IN) {
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return false;
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}
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if (ioc & IO_IN) {
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#ifndef PLATFORM_WINDOWS
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CrossThreadChannel::drain (port->selectable());
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#endif
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DEBUG_TRACE (DEBUG::MidiIO, string_compose ("data available on %1\n", ((ARDOUR::Port*)port)->name()));
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framepos_t now = _session.engine().sample_time();
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port->parse (now);
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}
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return true;
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}
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void
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MidiControlUI::clear_ports ()
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{
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for (PortSources::iterator i = port_sources.begin(); i != port_sources.end(); ++i) {
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g_source_destroy (*i);
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g_source_unref (*i);
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}
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port_sources.clear ();
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}
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void
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MidiControlUI::reset_ports ()
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{
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if (!port_sources.empty()) {
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return;
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}
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vector<AsyncMIDIPort*> ports;
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AsyncMIDIPort* p;
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if ((p = dynamic_cast<AsyncMIDIPort*> (_session.midi_input_port()))) {
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ports.push_back (p);
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}
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if ((p = dynamic_cast<AsyncMIDIPort*> (_session.mmc_input_port()))) {
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ports.push_back (p);
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}
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if ((p = dynamic_cast<AsyncMIDIPort*> (_session.scene_input_port()))) {
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ports.push_back (p);
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}
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if (ports.empty()) {
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return;
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}
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int fd;
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for (vector<AsyncMIDIPort*>::const_iterator pi = ports.begin(); pi != ports.end(); ++pi) {
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if ((fd = (*pi)->selectable ()) >= 0) {
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Glib::RefPtr<IOSource> psrc = IOSource::create (fd, IO_IN|IO_HUP|IO_ERR);
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psrc->connect (sigc::bind (sigc::mem_fun (this, &MidiControlUI::midi_input_handler), *pi));
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psrc->attach (_main_loop->get_context());
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// glibmm hack: for now, store only the GSource*
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port_sources.push_back (psrc->gobj());
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g_source_ref (psrc->gobj());
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}
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}
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}
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void
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MidiControlUI::thread_init ()
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{
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struct sched_param rtparam;
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pthread_set_name (X_("midiUI"));
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PBD::notify_gui_about_thread_creation (X_("gui"), pthread_self(), X_("MIDI"), 2048);
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SessionEvent::create_per_thread_pool (X_("MIDI I/O"), 128);
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memset (&rtparam, 0, sizeof (rtparam));
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rtparam.sched_priority = 9; /* XXX should be relative to audio (JACK) thread */
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if (pthread_setschedparam (pthread_self(), SCHED_FIFO, &rtparam) != 0) {
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// do we care? not particularly.
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}
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reset_ports ();
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}
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