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/*
Copyright (C) 2004 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 <iostream>
#include <cerrno>
#include "ardour/audioengine.h"
#include "ardour/audio_backend.h"
#include "ardour/session.h"
#include "ardour/transport_master.h"
#include "pbd/i18n.h"
using namespace std;
using namespace ARDOUR;
Engine_TransportMaster::Engine_TransportMaster (AudioEngine& e)
: TransportMaster (Engine, X_("JACK"))
, engine (e)
, _starting (false)
{
check_backend ();
}
Engine_TransportMaster::~Engine_TransportMaster ()
{
}
void
Engine_TransportMaster::init ()
{
}
void
Engine_TransportMaster::check_backend()
{
if (AudioEngine::instance()->current_backend_name() == X_("JACK")) {
_connected = true;
} else {
_connected = false;
}
}
bool
Engine_TransportMaster::locked() const
{
return true;
}
bool
Engine_TransportMaster::ok() const
{
return true;
}
void
Engine_TransportMaster::pre_process (pframes_t, samplepos_t, boost::optional<samplepos_t>)
{
/* nothing to do */
}
bool
Engine_TransportMaster::speed_and_position (double& sp, samplepos_t& position, samplepos_t& lp, samplepos_t & when, samplepos_t now)
{
boost::shared_ptr<AudioBackend> backend = engine.current_backend();
/* 3rd argument (now) doesn't matter here because we're always being
* called synchronously with the engine.
*/
if (backend && backend->speed_and_position (sp, position)) {
return true;
}
lp = now;
when = now;
_current_delta = 0;
return false;
}
std::string
Engine_TransportMaster::position_string () const
{
if (_session) {
return PBD::to_string (_session->audible_sample());
}
return std::string();
}
std::string
Engine_TransportMaster::delta_string () const
{
return string ("0");
}
bool
Engine_TransportMaster::allow_request (TransportRequestSource src, TransportRequestType type) const
{
if (_session) {
if (_session->config.get_jack_time_master()) {
return true;
} else {
return false;
}
}
return true;
}
samplecnt_t
Engine_TransportMaster::update_interval () const
{
return AudioEngine::instance()->samples_per_cycle();
}
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