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#include "mackie_control_protocol.h"
#include "midi_byte_array.h"
#include "surface_port.h"
#include <pbd/pthread_utils.h>
#include <pbd/error.h>
#include <midi++/types.h>
#include <midi++/port.h>
#include <midi++/manager.h>
#include <midi++/port_request.h>
#include "i18n.h"
#include <unistd.h>
#include <fcntl.h>
#include <poll.h>
#include <errno.h>
#include <iostream>
#include <string>
#include <vector>
using namespace std;
using namespace Mackie;
using namespace PBD;
const char * MackieControlProtocol::default_port_name = "mcu";
bool MackieControlProtocol::probe()
{
return MIDI::Manager::instance()->port( default_port_name ) != 0;
}
void * MackieControlProtocol::monitor_work()
{
cout << "MackieControlProtocol::monitor_work" << endl;
// What does ThreadCreatedWithRequestSize do?
PBD::ThreadCreated (pthread_self(), X_("Mackie"));
#if 0
// it seems to do the "block" on poll less often
// with this code disabled
struct sched_param rtparam;
memset (&rtparam, 0, sizeof (rtparam));
rtparam.sched_priority = 9; /* XXX should be relative to audio (JACK) thread */
int err;
if ((err = pthread_setschedparam (pthread_self(), SCHED_FIFO, &rtparam)) != 0) {
// do we care? not particularly.
PBD::info << string_compose (_("%1: thread not running with realtime scheduling (%2)"), name(), strerror( errno )) << endmsg;
}
#endif
pthread_setcancelstate (PTHREAD_CANCEL_ENABLE, 0);
pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0);
// read from midi ports
cout << "start poll cycle" << endl;
while ( true )
{
update_ports();
if ( poll_ports() )
{
try { read_ports(); }
catch ( exception & e ) {
cout << "MackieControlProtocol::poll_ports caught exception: " << e.what() << endl;
_ports_changed = true;
update_ports();
}
}
// provide a cancellation point
pthread_testcancel();
// poll for automation data from the routes
poll_automation();
}
// these never get called
cout << "MackieControlProtocol::poll_ports exiting" << endl;
delete[] pfd;
return (void*) 0;
}
void MackieControlProtocol::update_ports()
{
// create pollfd structures if necessary
if ( _ports_changed )
{
cout << "MackieControlProtocol::update_ports changed 1" << endl;
Glib::Mutex::Lock ul( update_mutex );
// yes, this is a double-test locking paradigm, or whatever it's called
// because we don't *always* need to acquire the lock for the first test
if ( _ports_changed )
{
cout << "MackieControlProtocol::update_ports updating" << endl;
if ( pfd != 0 ) delete[] pfd;
// TODO This might be a memory leak. How does thread cancellation cleanup work?
pfd = new pollfd[_ports.size()];
nfds = 0;
for( MackiePorts::iterator it = _ports.begin(); it != _ports.end(); ++it )
{
cout << "adding port " << (*it)->port().name() << " to pollfd" << endl;
pfd[nfds].fd = (*it)->port().selectable();
pfd[nfds].events = POLLIN|POLLHUP|POLLERR;
++nfds;
}
_ports_changed = false;
}
cout << "MackieControlProtocol::update_ports signalling" << endl;
update_cond.signal();
cout << "MackieControlProtocol::update_ports finished" << endl;
}
}
void MackieControlProtocol::read_ports()
{
/* now read any data on the ports */
Glib::Mutex::Lock lock( update_mutex );
for ( int p = 0; p < nfds; ++p )
{
// this will cause handle_midi_any in the MackiePort to be triggered
if ( pfd[p].revents & POLLIN > 0 )
{
lock.release();
_ports[p]->read();
lock.acquire();
}
}
}
bool MackieControlProtocol::poll_ports()
{
int timeout = 10; // milliseconds
int no_ports_sleep = 1000; // milliseconds
Glib::Mutex::Lock lock( update_mutex );
// if there are no ports
if ( nfds < 1 )
{
lock.release();
cout << "poll_ports no ports" << endl;
usleep( no_ports_sleep * 1000 );
return false;
}
int retval = poll( pfd, nfds, timeout );
if ( retval < 0 )
{
// gdb at work, perhaps
if ( errno != EINTR )
{
error << string_compose(_("Mackie MIDI thread poll failed (%1)"), strerror( errno ) ) << endmsg;
}
return false;
}
return retval > 0;
}
void MackieControlProtocol::handle_port_changed( SurfacePort * port, bool active )
{
cout << "MackieControlProtocol::handle_port_changed port: " << *port << " active: " << active << endl;
if ( active == false )
{
// port gone away. So stop polling it ASAP
{
// delete the port instance
Glib::Mutex::Lock lock( update_mutex );
MackiePorts::iterator it = find( _ports.begin(), _ports.end(), port );
if ( it != _ports.end() )
{
delete *it;
_ports.erase( it );
}
}
_ports_changed = true;
update_ports();
}
else
{
cout << __FILE__ << ':' << __LINE__ << endl;
_ports_changed = true;
cout << __FILE__ << ':' << __LINE__ << endl;
// port added
update_ports();
cout << __FILE__ << ':' << __LINE__ << endl;
update_surface();
cout << __FILE__ << ':' << __LINE__ << endl;
// TODO update bank size
// rebuild surface
}
}
void MackieControlProtocol::handle_port_init( Mackie::SurfacePort * sport )
{
cout << "MackieControlProtocol::handle_port_init" << endl;
_ports_changed = true;
update_ports();
cout << "MackieControlProtocol::handle_port_init finished" << endl;
}
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