Initial import from DrumGizmo branch.

1 files changed, 145 insertions, 0 deletions

diff --git a/plugin.h b/plugin.h
new file mode 100644
index 0000000..0c58771
--- /dev/null
+++ b/plugin.h
@@ -0,0 +1,145 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            plugin.h
+ *
+ *  Sun Feb  7 14:11:40 CET 2016
+ *  Copyright 2016 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of PluginGizmo.
+ *
+ *  PluginGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  PluginGizmo 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 Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with PluginGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#pragma once
+
+#include <vector>
+#include <string>
+
+#include <cstdlib>
+
+class MidiEvent;
+
+//! Abstract base-class for plugin implementations.
+class Plugin {
+public:
+	//! Implement this to create a new plugin instance.
+	static Plugin* create();
+
+	//! Get current free-wheel mode.
+	virtual bool getFreeWheel() const = 0;
+
+	//! This method is called by the host when the free-wheel mode changes.
+	virtual void onFreeWheelChange(bool freewheel) = 0;
+
+
+	//! Call this to get current samplerate.
+	virtual float getSamplerate() = 0;
+
+	//! This method is called by the host when the samplerate changes.
+	virtual void onSamplerateChange(float samplerate) = 0;
+
+
+	//! Call this to get current frame-size.
+	virtual std::size_t getFramesize() = 0;
+
+	//! This method is called by the host when the frame-size changes.
+	virtual void onFramesizeChange(std::size_t framesize) = 0;
+
+
+	//! Call this to get current active state
+	virtual bool getActive() = 0;
+
+	//! This method is called by the host when the active state changes.
+	virtual void onActiveChange(bool active) = 0;
+
+
+	//! This method is called by the host to get the current state for storing.
+	virtual std::string onStateSave() = 0;
+
+	//! This method is called by the host when a new state has been loaded.
+	virtual void onStateRestore(const std::string& config) = 0;
+
+
+	//! This is method is called by the host to get the current latency.
+	//! \param The latency in samples.
+	virtual float getLatency() = 0;
+
+	//! Call this method to signal a latency change to the host.
+	//! \param latency The latency in samples.
+	virtual void setLatency(float latency) = 0;
+
+
+	//! Called by the the host to get the number of midi input channels.
+	//! This must remain constant during the lifespan of the plugin instance.
+	virtual std::size_t getNumberOfMidiInputs() = 0;
+
+	//! Called by the the host to get the number of midi output channels.
+	//! This must remain constant during the lifespan of the plugin instance.
+	virtual std::size_t getNumberOfMidiOutputs() = 0;
+
+	//! Called by the the host to get the number of audio input channels.
+	//! This must remain constant during the lifespan of the plugin instance.
+	virtual std::size_t getNumberOfAudioInputs() = 0;
+
+	//! Called by the the host to get the number of audio output channels.
+	//! This must remain constant during the lifespan of the plugin instance.
+	virtual std::size_t getNumberOfAudioOutputs() = 0;
+
+
+	//! Get unique plugin id.
+	virtual std::string getId() = 0;
+
+	//! Process callback.
+	virtual void process(std::size_t pos,
+	                     const std::vector<MidiEvent>& input_events,
+	                     std::vector<MidiEvent>& output_events,
+	                     const std::vector<const float*>& input_samples,
+	                     const std::vector<float*>& output_samples,
+	                     std::size_t count) = 0;
+
+
+	//
+	// GUI (optional)
+	//
+
+	//! Return true if a GUI implementation is to be used.
+	virtual bool hasGUI()
+	{
+		return false;
+	}
+
+	//! Create new window.
+	virtual void createWindow(void *parent) {}
+
+	//! Destroy window.
+	virtual void onDestroyWindow() {}
+
+	//! Show window.
+	virtual void onShowWindow() {}
+
+	//! Hide window.
+	virtual void onHideWindow() {}
+
+	//! Called regularly by host; process ui events.
+	virtual void onIdle() {}
+
+	//! Signal new window size to host.
+	virtual void resizeWindow(std::size_t width, std::size_t height) = 0;
+
+	//! Signal close window event to the host.
+	virtual void closeWindow() = 0;
+};