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/*
Copyright (C) 2009 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 <cstdlib>
#include <sigc++/signal.h>
#include "pbd/pthread_utils.h"
#include "midi++/manager.h"
#include "midi++/port.h"
#include "ardour/debug.h"
#include "ardour/audioengine.h"
#include "ardour/midi_ui.h"
#include "ardour/session.h"
#include "ardour/session_event.h"
#include "ardour/types.h"
using namespace std;
using namespace ARDOUR;
using namespace PBD;
using namespace Glib;
#include "i18n.h"
BaseUI::RequestType MidiControlUI::PortChange = BaseUI::new_request_type();
MidiControlUI* MidiControlUI::_instance = 0;
#include "pbd/abstract_ui.cc" /* instantiate the template */
MidiControlUI::MidiControlUI (Session& s)
: AbstractUI<MidiUIRequest> (X_("midiui"))
, _session (s)
{
MIDI::Manager::instance()->PortsChanged.connect_same_thread (rebind_connection, boost::bind (&MidiControlUI::change_midi_ports, this));
_instance = this;
}
MidiControlUI::~MidiControlUI ()
{
clear_ports ();
_instance = 0;
}
void
MidiControlUI::do_request (MidiUIRequest* req)
{
if (req->type == PortChange) {
/* restart event loop with new ports */
DEBUG_TRACE (DEBUG::MidiIO, "reset ports\n");
reset_ports ();
} else if (req->type == CallSlot) {
#ifndef NDEBUG
if (getenv ("DEBUG_THREADED_SIGNALS")) {
cerr << "MIDI UI calls a slot\n";
}
#endif
req->the_slot ();
} else if (req->type == Quit) {
BaseUI::quit ();
}
}
void
MidiControlUI::change_midi_ports ()
{
MidiUIRequest* req = get_request (PortChange);
if (req == 0) {
return;
}
send_request (req);
}
bool
MidiControlUI::midi_input_handler (IOCondition ioc, MIDI::Port* port)
{
DEBUG_TRACE (DEBUG::MidiIO, string_compose ("something happend on %1\n", port->name()));
if (ioc & ~IO_IN) {
return false;
}
if (ioc & IO_IN) {
CrossThreadChannel::drain (port->selectable());
DEBUG_TRACE (DEBUG::MidiIO, string_compose ("data available on %1\n", port->name()));
framepos_t now = _session.engine().frame_time();
port->parse (now);
}
return true;
}
void
MidiControlUI::clear_ports ()
{
for (PortSources::iterator i = port_sources.begin(); i != port_sources.end(); ++i) {
g_source_destroy (*i);
g_source_unref (*i);
}
port_sources.clear ();
}
void
MidiControlUI::reset_ports ()
{
clear_ports ();
boost::shared_ptr<const MIDI::Manager::PortList> plist = MIDI::Manager::instance()->get_midi_ports ();
for (MIDI::Manager::PortList::const_iterator i = plist->begin(); i != plist->end(); ++i) {
if (!(*i)->centrally_parsed()) {
continue;
}
int fd;
if ((fd = (*i)->selectable ()) >= 0) {
Glib::RefPtr<IOSource> psrc = IOSource::create (fd, IO_IN|IO_HUP|IO_ERR);
psrc->connect (sigc::bind (sigc::mem_fun (this, &MidiControlUI::midi_input_handler), *i));
psrc->attach (_main_loop->get_context());
// glibmm hack: for now, store only the GSource*
port_sources.push_back (psrc->gobj());
g_source_ref (psrc->gobj());
}
}
}
void
MidiControlUI::thread_init ()
{
struct sched_param rtparam;
pthread_set_name (X_("midiUI"));
PBD::notify_gui_about_thread_creation (X_("gui"), pthread_self(), X_("MIDI"), 2048);
SessionEvent::create_per_thread_pool (X_("MIDI I/O"), 128);
memset (&rtparam, 0, sizeof (rtparam));
rtparam.sched_priority = 9; /* XXX should be relative to audio (JACK) thread */
if (pthread_setschedparam (pthread_self(), SCHED_FIFO, &rtparam) != 0) {
// do we care? not particularly.
}
reset_ports ();
}
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