Line data    Source code

       1              : /*
       2              :  * SPDX-License-Identifier: GPL-3.0-only
       3              :  * MuseScore-CLA-applies
       4              :  *
       5              :  * MuseScore Studio
       6              :  * Music Composition & Notation
       7              :  *
       8              :  * Copyright (C) 2021 MuseScore Limited and others
       9              :  *
      10              :  * This program is free software: you can redistribute it and/or modify
      11              :  * it under the terms of the GNU General Public License version 3 as
      12              :  * published by the Free Software Foundation.
      13              :  *
      14              :  * This program is distributed in the hope that it will be useful,
      15              :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      16              :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      17              :  * GNU General Public License for more details.
      18              :  *
      19              :  * You should have received a copy of the GNU General Public License
      20              :  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
      21              :  */
      22              : #include "vstcomponenthandler.h"
      23              : 
      24              : using namespace muse::vst;
      25              : using namespace muse::async;
      26              : 
      27            0 : IMPLEMENT_FUNKNOWN_METHODS(VstAdvancedHandler, Steinberg::Vst::IComponentHandler2, Steinberg::Vst::IComponentHandler2::iid)
      28              : 
      29            0 : IMPLEMENT_REFCOUNT(VstComponentHandler)
      30              : 
      31            0 : ::Steinberg::tresult PLUGIN_API VstComponentHandler::queryInterface(const ::Steinberg::TUID _iid, void** obj)
      32              : {
      33            0 :     QUERY_INTERFACE(_iid, obj, ::Steinberg::FUnknown::iid, IComponentHandler)
      34            0 :     QUERY_INTERFACE(_iid, obj, IComponentHandler::iid, IComponentHandler)
      35              : 
      36            0 :     if (::Steinberg::FUnknownPrivate::iidEqual(_iid, IAdvancedComponentHandler::iid)) {
      37            0 :         return m_advancedHandler->queryInterface(_iid, obj);
      38              :     }
      39            0 :     *obj = nullptr;
      40            0 :     return ::Steinberg::kNoInterface;
      41              : }
      42              : 
      43            0 : VstComponentHandler::VstComponentHandler()
      44            0 :     : m_advancedHandler(new VstAdvancedHandler(m_paramsChangedNotify))
      45              : {
      46            0 : }
      47              : 
      48            0 : Channel<PluginParamId, PluginParamValue> VstComponentHandler::pluginParamChanged() const
      49              : {
      50            0 :     return m_paramChanged;
      51              : }
      52              : 
      53            0 : Notification VstComponentHandler::pluginParamsChanged() const
      54              : {
      55            0 :     return m_paramsChangedNotify;
      56              : }
      57              : 
      58            0 : void VstComponentHandler::setSuppressNotify(bool suppress)
      59              : {
      60            0 :     m_advancedHandler->setSuppressNotify(suppress);
      61            0 : }
      62              : 
      63            0 : Steinberg::tresult VstComponentHandler::beginEdit(Steinberg::Vst::ParamID /*id*/)
      64              : {
      65            0 :     return Steinberg::kResultOk;
      66              : }
      67              : 
      68            0 : Steinberg::tresult VstComponentHandler::performEdit(Steinberg::Vst::ParamID id, Steinberg::Vst::ParamValue valueNormalized)
      69              : {
      70            0 :     if (!m_advancedHandler->suppressNotify()) {
      71            0 :         m_paramChanged.send(id, valueNormalized);
      72              :     }
      73              : 
      74            0 :     return Steinberg::kResultOk;
      75              : }
      76              : 
      77            0 : Steinberg::tresult VstComponentHandler::endEdit(Steinberg::Vst::ParamID /*id*/)
      78              : {
      79            0 :     if (!m_advancedHandler->suppressNotify()) {
      80            0 :         m_paramsChangedNotify.notify();
      81              :     }
      82              : 
      83            0 :     return Steinberg::kResultOk;
      84              : }
      85              : 
      86            0 : Steinberg::tresult VstComponentHandler::restartComponent(Steinberg::int32 /*flags*/)
      87              : {
      88            0 :     return Steinberg::kResultOk;
      89              : }
      90              : 
      91            0 : VstAdvancedHandler::VstAdvancedHandler(async::Notification notifier)
      92            0 :     : m_paramsChanged(notifier)
      93              : {
      94            0 : }
      95              : 
      96            0 : void VstAdvancedHandler::setSuppressNotify(bool suppress)
      97              : {
      98            0 :     m_suppressNotify.store(suppress, std::memory_order_relaxed);
      99            0 : }
     100              : 
     101            0 : bool VstAdvancedHandler::suppressNotify() const
     102              : {
     103            0 :     return m_suppressNotify.load(std::memory_order_relaxed);
     104              : }
     105              : 
     106            0 : Steinberg::tresult VstAdvancedHandler::setDirty(Steinberg::TBool /*state*/)
     107              : {
     108            0 :     if (!suppressNotify()) {
     109            0 :         m_paramsChanged.notify();
     110              :     }
     111              : 
     112            0 :     return Steinberg::kResultOk;
     113              : }
     114              : 
     115            0 : Steinberg::tresult VstAdvancedHandler::requestOpenEditor(Steinberg::FIDString /*name*/)
     116              : {
     117            0 :     return Steinberg::kResultOk;
     118              : }
     119              : 
     120            0 : Steinberg::tresult VstAdvancedHandler::startGroupEdit()
     121              : {
     122            0 :     return Steinberg::kResultOk;
     123              : }
     124              : 
     125            0 : Steinberg::tresult VstAdvancedHandler::finishGroupEdit()
     126              : {
     127            0 :     if (!suppressNotify()) {
     128            0 :         m_paramsChanged.notify();
     129              :     }
     130              : 
     131            0 :     return Steinberg::kResultOk;
     132              : }