149 lines
3.0 KiB
C++
149 lines
3.0 KiB
C++
/*
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* Copyright (C) 2013-2019 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2015-2018 Robin Gareus <robin@gareus.org>
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*
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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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*
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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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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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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bool
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Engine_TransportMaster::usable () const
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{
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return AudioEngine::instance()->current_backend_name() == X_("JACK");
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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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std::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) {
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_starting = backend->speed_and_position (sp, position);
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} else {
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_starting = false;
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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 true;
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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 (u8"\u0394 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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