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1be3301342
Trust that ::reset() works for all transport masters, and call it when engine is stopped. This way the transport masters are ready to be called again as soon as the engine restarts.
140 lines
2.8 KiB
C++
140 lines
2.8 KiB
C++
/*
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Copyright (C) 2004 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 <iostream>
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#include <cerrno>
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#include "ardour/audioengine.h"
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#include "ardour/audio_backend.h"
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#include "ardour/session.h"
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#include "ardour/transport_master.h"
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#include "pbd/i18n.h"
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using namespace std;
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using namespace ARDOUR;
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Engine_TransportMaster::Engine_TransportMaster (AudioEngine& e)
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: TransportMaster (Engine, X_("JACK"))
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, engine (e)
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, _starting (false)
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{
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check_backend ();
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}
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Engine_TransportMaster::~Engine_TransportMaster ()
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{
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}
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void
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Engine_TransportMaster::init ()
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{
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}
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void
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Engine_TransportMaster::check_backend()
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{
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if (AudioEngine::instance()->current_backend_name() == X_("JACK")) {
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_connected = true;
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} else {
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_connected = false;
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}
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}
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void
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Engine_TransportMaster::reset (bool)
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{
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_starting = false;
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}
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bool
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Engine_TransportMaster::locked() const
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{
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return true;
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}
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bool
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Engine_TransportMaster::ok() const
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{
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return true;
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}
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void
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Engine_TransportMaster::pre_process (pframes_t, samplepos_t, boost::optional<samplepos_t>)
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{
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/* nothing to do */
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}
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bool
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Engine_TransportMaster::speed_and_position (double& sp, samplepos_t& position, samplepos_t& lp, samplepos_t & when, samplepos_t now)
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{
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boost::shared_ptr<AudioBackend> backend = engine.current_backend();
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/* 3rd argument (now) doesn't matter here because we're always being
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* called synchronously with the engine.
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*/
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if (backend && backend->speed_and_position (sp, position)) {
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return true;
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}
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lp = now;
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when = now;
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_current_delta = 0;
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return false;
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}
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std::string
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Engine_TransportMaster::position_string () const
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{
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if (_session) {
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return PBD::to_string (_session->audible_sample());
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}
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return std::string();
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}
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std::string
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Engine_TransportMaster::delta_string () const
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{
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return string ("0");
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}
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bool
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Engine_TransportMaster::allow_request (TransportRequestSource src, TransportRequestType type) const
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{
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if (_session) {
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if (_session->config.get_jack_time_master()) {
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return true;
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} else {
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return false;
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}
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}
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return true;
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}
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samplecnt_t
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Engine_TransportMaster::update_interval () const
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{
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return AudioEngine::instance()->samples_per_cycle();
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}
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