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Implementation of the Lv2 core, except for CV ports. No features or extensions are supported yet. You can now generate sound using Lv2 instruments (restricted to non-piano) or effects. For an explenation about the new classes, see Lv2Manager.h
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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * Lv2Basics.h - basic Lv2 utils | ||
| * | ||
| * Copyright (c) 2018-2020 Johannes Lorenz <jlsf2013$users.sourceforge.net, $=@> | ||
| * | ||
| * This file is part of LMMS - https://lmms.io | ||
| * | ||
| * 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 (see COPYING); if not, write to the | ||
| * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | ||
| * Boston, MA 02110-1301 USA. | ||
| * | ||
| */ | ||
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| #ifndef LV2BASICS_H | ||
| #define LV2BASICS_H | ||
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| #include "lmmsconfig.h" | ||
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| #ifdef LMMS_HAVE_LV2 | ||
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| #include <lilv/lilv.h> | ||
| #include <memory> | ||
| #include <QString> | ||
| #include <string> | ||
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| struct LilvNodeDeleter | ||
| { | ||
| void operator()(LilvNode* n) { lilv_node_free(n); } | ||
| }; | ||
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| struct LilvNodesDeleter | ||
| { | ||
| void operator()(LilvNodes* n) { lilv_nodes_free(n); } | ||
| }; | ||
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| using AutoLilvNode = std::unique_ptr<LilvNode, LilvNodeDeleter>; | ||
| using AutoLilvNodes = std::unique_ptr<LilvNodes, LilvNodesDeleter>; | ||
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| /** | ||
| Return QString from a plugin's node, everything will be freed automatically | ||
| @param plug The plugin where the node is | ||
| @param getFunc The function to return the node from the plugin | ||
| */ | ||
| QString qStringFromPluginNode(const LilvPlugin* plug, | ||
| LilvNode * (*getFunc)(const LilvPlugin*)); | ||
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| //! Return port name as QString, everything will be freed automatically | ||
| QString qStringFromPortName(const LilvPlugin* plug, const LilvPort* port); | ||
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| //! Return port name as std::string, everything will be freed automatically | ||
| std::string stdStringFromPortName(const LilvPlugin* plug, const LilvPort* port); | ||
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| #endif // LMMS_HAVE_LV2 | ||
| #endif // LV2BASICS_H |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,146 @@ | ||
| /* | ||
| * Lv2ControlBase.h - Lv2 control base class | ||
| * | ||
| * Copyright (c) 2018-2020 Johannes Lorenz <jlsf2013$users.sourceforge.net, $=@> | ||
| * | ||
| * This file is part of LMMS - https://lmms.io | ||
| * | ||
| * 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 (see COPYING); if not, write to the | ||
| * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | ||
| * Boston, MA 02110-1301 USA. | ||
| * | ||
| */ | ||
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| #ifndef LV2_CONTROL_BASE_H | ||
| #define LV2_CONTROL_BASE_H | ||
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| #include "lmmsconfig.h" | ||
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| #ifdef LMMS_HAVE_LV2 | ||
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| #include <lilv/lilv.h> | ||
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| #include "DataFile.h" | ||
| #include "LinkedModelGroups.h" | ||
| #include "Plugin.h" | ||
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| class Lv2Proc; | ||
| class PluginIssue; | ||
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| /** | ||
| Common base class for Lv2 plugins | ||
| This class contains a vector of Lv2Proc, usually 1 (for stereo plugins) or | ||
| 2 (for mono plugins). Most of the logic is done there, this class primarily | ||
| forwards work to the Lv2Proc and collects the results. | ||
| This class provides everything Lv2 plugins have in common. It's not | ||
| named Lv2Plugin, because | ||
| * it does not inherit Instrument | ||
| * the Plugin subclass Effect does not inherit this class | ||
| This class would usually be a Model subclass. However, Qt doesn't allow | ||
| this: | ||
| * inhertiting only from Model will cause diamond inheritance for QObject, | ||
| which will cause errors with Q_OBJECT | ||
| * making this a direct subclass of Instrument resp. EffectControls would | ||
| require CRTP, which would make this class a template class, which would | ||
| conflict with Q_OBJECT | ||
| The consequence is that this class can neither inherit QObject or Model, nor | ||
| Instrument or EffectControls, which means in fact: | ||
| * this class contains no signals or slots, but it offers stubs for slots | ||
| that shall be called by child classes | ||
| * this class can not override virtuals of Instrument or EffectControls, so | ||
| it will offer functions that must be called by virtuals in its child class | ||
| */ | ||
| class Lv2ControlBase : public LinkedModelGroups | ||
| { | ||
| public: | ||
| static Plugin::PluginTypes check(const LilvPlugin* m_plugin, | ||
| std::vector<PluginIssue> &issues, bool printIssues = false); | ||
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| const LilvPlugin* getPlugin() const { return m_plugin; } | ||
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| Lv2Proc *control(std::size_t idx) { return m_procs[idx].get(); } | ||
| const Lv2Proc *control(std::size_t idx) const { return m_procs[idx].get(); } | ||
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| bool hasGui() const { return m_hasGUI; } | ||
| void setHasGui(bool val) { m_hasGUI = val; } | ||
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| protected: | ||
| /* | ||
| ctor/dtor | ||
| */ | ||
| //! @param that the class inheriting this class and inheriting Model; | ||
| //! this is the same pointer as this, but a different type | ||
| //! @param uri the Lv2 URI telling this class what plugin to construct | ||
| Lv2ControlBase(class Model *that, const QString& uri); | ||
| ~Lv2ControlBase() override; | ||
| //! Must be checked after ctor or reload | ||
| bool isValid() const { return m_valid; } | ||
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| /* | ||
| overrides | ||
| */ | ||
| LinkedModelGroup* getGroup(std::size_t idx) override; | ||
| const LinkedModelGroup* getGroup(std::size_t idx) const override; | ||
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| /* | ||
| utils for the run thread | ||
| */ | ||
| //! Copy values from all connected models into the respective ports | ||
| void copyModelsFromLmms(); | ||
| //! Copy buffer passed by LMMS into our ports | ||
| void copyBuffersFromLmms(const sampleFrame *buf, fpp_t frames); | ||
| //! Copy our ports into buffers passed by LMMS | ||
| void copyBuffersToLmms(sampleFrame *buf, fpp_t frames) const; | ||
| //! Run the Lv2 plugin instance for @param frames frames | ||
| void run(fpp_t frames); | ||
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| /* | ||
| load/save, must be called from virtuals | ||
| */ | ||
| void saveSettings(QDomDocument &doc, QDomElement &that); | ||
| void loadSettings(const QDomElement &that); | ||
| void loadFile(const QString &file); | ||
| //! TODO: not implemented | ||
| void reloadPlugin(); | ||
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| /* | ||
| more functions that must be called from virtuals | ||
| */ | ||
| std::size_t controlCount() const; | ||
| QString nodeName() const { return "lv2controls"; } | ||
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| private: | ||
| //! Return the DataFile settings type | ||
| virtual DataFile::Types settingsType() = 0; | ||
| //! Inform the plugin about a file name change | ||
| virtual void setNameFromFile(const QString &fname) = 0; | ||
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| //! Independent processors | ||
| //! If this is a mono effect, the vector will have size 2 in order to | ||
| //! fulfill LMMS' requirement of having stereo input and output | ||
| std::vector<std::unique_ptr<Lv2Proc>> m_procs; | ||
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| bool m_valid = true; | ||
| bool m_hasGUI = false; | ||
| unsigned m_channelsPerProc; | ||
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| const LilvPlugin* m_plugin; | ||
| }; | ||
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| #endif // LMMS_HAVE_LV2 | ||
| #endif // LV2_CONTROL_BASE_H |
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