commit ae52c3647c2be6b41812b1b86cf37ad574a935fa
parent 9315bc71e7b578079b92dd1b1a1c4d3fc9dd7636
Author: falkTX <falktx@falktx.com>
Date: Mon, 24 May 2021 12:09:34 +0100
Import SendNote example from #212, slightly adjusted
Signed-off-by: falkTX <falktx@falktx.com>
Diffstat:
6 files changed, 450 insertions(+), 0 deletions(-)
diff --git a/Makefile b/Makefile
@@ -25,6 +25,7 @@ examples: dgl
$(MAKE) all -C examples/Meters
$(MAKE) all -C examples/MidiThrough
$(MAKE) all -C examples/Parameters
+ $(MAKE) all -C examples/SendNote
$(MAKE) all -C examples/States
ifeq ($(HAVE_CAIRO),true)
$(MAKE) all -C examples/CairoUI
@@ -65,6 +66,7 @@ clean:
$(MAKE) clean -C examples/Meters
$(MAKE) clean -C examples/MidiThrough
$(MAKE) clean -C examples/Parameters
+ $(MAKE) clean -C examples/SendNote
$(MAKE) clean -C examples/States
$(MAKE) clean -C utils/lv2-ttl-generator
ifneq ($(MACOS_OR_WINDOWS),true)
diff --git a/examples/SendNote/DistrhoPluginInfo.h b/examples/SendNote/DistrhoPluginInfo.h
@@ -0,0 +1,32 @@
+/*
+ * DISTRHO Plugin Framework (DPF)
+ * Copyright (C) 2012-2021 Filipe Coelho <falktx@falktx.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any purpose with
+ * or without fee is hereby granted, provided that the above copyright notice and this
+ * permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
+ * TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef DISTRHO_PLUGIN_INFO_H_INCLUDED
+#define DISTRHO_PLUGIN_INFO_H_INCLUDED
+
+#define DISTRHO_PLUGIN_BRAND "DISTRHO"
+#define DISTRHO_PLUGIN_NAME "SendNote"
+#define DISTRHO_PLUGIN_URI "http://distrho.sf.net/examples/SendNote"
+
+#define DISTRHO_PLUGIN_HAS_UI 1
+#define DISTRHO_PLUGIN_HAS_EMBED_UI 1
+#define DISTRHO_PLUGIN_IS_RT_SAFE 1
+#define DISTRHO_PLUGIN_NUM_INPUTS 0
+#define DISTRHO_PLUGIN_NUM_OUTPUTS 1
+#define DISTRHO_PLUGIN_WANT_MIDI_INPUT 1
+#define DISTRHO_PLUGIN_WANT_MIDI_OUTPUT 0
+
+#endif // DISTRHO_PLUGIN_INFO_H_INCLUDED
diff --git a/examples/SendNote/Makefile b/examples/SendNote/Makefile
@@ -0,0 +1,46 @@
+#!/usr/bin/make -f
+# Makefile for DISTRHO Plugins #
+# ---------------------------- #
+# Created by falkTX
+#
+
+# --------------------------------------------------------------
+# Project name, used for binaries
+
+NAME = d_sendNote
+
+# --------------------------------------------------------------
+# Files to build
+
+FILES_DSP = \
+ SendNoteExamplePlugin.cpp
+
+
+FILES_UI = \
+ SendNoteExampleUI.cpp
+
+# --------------------------------------------------------------
+# Do some magic
+
+include ../../Makefile.plugins.mk
+
+# --------------------------------------------------------------
+# Enable all possible plugin types
+
+ifeq ($(HAVE_JACK),true)
+ifeq ($(HAVE_OPENGL),true)
+TARGETS += jack
+endif
+endif
+
+ifeq ($(HAVE_OPENGL),true)
+TARGETS += lv2_sep
+else
+TARGETS += lv2_dsp
+endif
+
+TARGETS += vst
+
+all: $(TARGETS)
+
+# --------------------------------------------------------------
diff --git a/examples/SendNote/README.md b/examples/SendNote/README.md
@@ -0,0 +1,6 @@
+# SendNote example
+
+This example will show how to send MIDI notes in DPF based UIs.<br/>
+
+The UI presents a row of MIDI keys which transmit note events to a synthesizer.
+
diff --git a/examples/SendNote/SendNoteExamplePlugin.cpp b/examples/SendNote/SendNoteExamplePlugin.cpp
@@ -0,0 +1,192 @@
+/*
+ * DISTRHO Plugin Framework (DPF)
+ * Copyright (C) 2012-2021 Filipe Coelho <falktx@falktx.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any purpose with
+ * or without fee is hereby granted, provided that the above copyright notice and this
+ * permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
+ * TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "DistrhoPlugin.hpp"
+
+#include <cmath>
+#include <cstring>
+
+START_NAMESPACE_DISTRHO
+
+// -----------------------------------------------------------------------------------------------------------
+
+/**
+ Plugin that demonstrates sending notes from the editor in DPF.
+ */
+class SendNoteExamplePlugin : public Plugin
+{
+public:
+ SendNoteExamplePlugin()
+ : Plugin(0, 0, 0)
+ {
+ std::memset(fNotesPlayed, 0, sizeof(fNotesPlayed));
+ std::memset(fOscillatorPhases, 0, sizeof(fOscillatorPhases));
+ }
+
+protected:
+ /* --------------------------------------------------------------------------------------------------------
+ * Information */
+
+ /**
+ Get the plugin label.
+ This label is a short restricted name consisting of only _, a-z, A-Z and 0-9 characters.
+ */
+ const char* getLabel() const override
+ {
+ return "SendNote";
+ }
+
+ /**
+ Get an extensive comment/description about the plugin.
+ */
+ const char* getDescription() const override
+ {
+ return "Plugin that demonstrates sending notes from the editor in DPF.";
+ }
+
+ /**
+ Get the plugin author/maker.
+ */
+ const char* getMaker() const override
+ {
+ return "DISTRHO";
+ }
+
+ /**
+ Get the plugin homepage.
+ */
+ const char* getHomePage() const override
+ {
+ return "https://github.com/DISTRHO/DPF";
+ }
+
+ /**
+ Get the plugin license name (a single line of text).
+ For commercial plugins this should return some short copyright information.
+ */
+ const char* getLicense() const override
+ {
+ return "ISC";
+ }
+
+ /**
+ Get the plugin version, in hexadecimal.
+ */
+ uint32_t getVersion() const override
+ {
+ return d_version(1, 0, 0);
+ }
+
+ /**
+ Get the plugin unique Id.
+ This value is used by LADSPA, DSSI and VST plugin formats.
+ */
+ int64_t getUniqueId() const override
+ {
+ return d_cconst('d', 'S', 'N', 'o');
+ }
+
+ /* --------------------------------------------------------------------------------------------------------
+ * Init and Internal data, unused in this plugin */
+
+ void initParameter(uint32_t, Parameter&) override {}
+ float getParameterValue(uint32_t) const override { return 0.0f;}
+ void setParameterValue(uint32_t, float) override {}
+
+ /* --------------------------------------------------------------------------------------------------------
+ * Audio/MIDI Processing */
+
+ /**
+ Run/process function for plugins with MIDI input.
+ This synthesizes the MIDI voices with a sum of sine waves.
+ */
+ void run(const float**, float** outputs, uint32_t frames,
+ const MidiEvent* midiEvents, uint32_t midiEventCount) override
+ {
+ for (uint32_t i = 0; i < midiEventCount; ++i)
+ {
+ if (midiEvents[i].size <= 3)
+ {
+ uint8_t status = midiEvents[i].data[0];
+ uint8_t note = midiEvents[i].data[1] & 127;
+ uint8_t velocity = midiEvents[i].data[2] & 127;
+
+ switch (status & 0xf0)
+ {
+ case 0x90:
+ if (velocity != 0)
+ {
+ fNotesPlayed[note] = velocity;
+ break;
+ }
+ /* fall through */
+ case 0x80:
+ fNotesPlayed[note] = 0;
+ fOscillatorPhases[note] = 0;
+ break;
+ }
+ }
+ }
+
+ float* const output = outputs[0];
+ std::memset(output, 0, frames * sizeof(float));
+
+ for (uint32_t noteNumber = 0; noteNumber < 128; ++noteNumber)
+ {
+ if (fNotesPlayed[noteNumber] == 0)
+ continue;
+
+ float notePitch = 8.17579891564 * std::exp(0.0577622650 * noteNumber);
+
+ float phase = fOscillatorPhases[noteNumber];
+ float timeStep = notePitch / getSampleRate();
+ float k2pi = 2.0 * M_PI;
+ float gain = 0.1;
+
+ for (uint32_t i = 0; i < frames; ++i)
+ {
+ output[i] += gain * std::sin(k2pi * phase);
+ phase += timeStep;
+ phase -= (int)phase;
+ }
+
+ fOscillatorPhases[noteNumber] = phase;
+ }
+ }
+
+ // -------------------------------------------------------------------------------------------------------
+
+private:
+ uint8_t fNotesPlayed[128];
+ float fOscillatorPhases[128];
+
+ /**
+ Set our plugin class as non-copyable and add a leak detector just in case.
+ */
+ DISTRHO_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(SendNoteExamplePlugin)
+};
+
+/* ------------------------------------------------------------------------------------------------------------
+ * Plugin entry point, called by DPF to create a new plugin instance. */
+
+Plugin* createPlugin()
+{
+ return new SendNoteExamplePlugin();
+}
+
+// -----------------------------------------------------------------------------------------------------------
+
+END_NAMESPACE_DISTRHO
diff --git a/examples/SendNote/SendNoteExampleUI.cpp b/examples/SendNote/SendNoteExampleUI.cpp
@@ -0,0 +1,172 @@
+/*
+ * DISTRHO Plugin Framework (DPF)
+ * Copyright (C) 2012-2021 Filipe Coelho <falktx@falktx.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any purpose with
+ * or without fee is hereby granted, provided that the above copyright notice and this
+ * permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
+ * TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "DistrhoUI.hpp"
+
+#include "Color.hpp"
+
+#include <cstring>
+
+START_NAMESPACE_DISTRHO
+
+/**
+ We need the rectangle class from DGL.
+ */
+using DGL_NAMESPACE::Rectangle;
+
+// -----------------------------------------------------------------------------------------------------------
+
+class SendNoteExampleUI : public UI
+{
+public:
+ SendNoteExampleUI()
+ : UI(64*12+8, 64+8),
+ fLastKey(-1)
+ {
+ std::memset(fKeyState, 0, sizeof(fKeyState));
+ }
+
+protected:
+ /* --------------------------------------------------------------------------------------------------------
+ * DSP/Plugin Callbacks */
+
+ /**
+ A parameter has changed on the plugin side.
+ This is called by the host to inform the UI about parameter changes.
+ */
+ void parameterChanged(uint32_t index, float value) override
+ {
+ (void)index;
+ (void)value;
+ }
+
+ /* --------------------------------------------------------------------------------------------------------
+ * Widget Callbacks */
+
+ /**
+ The OpenGL drawing function.
+ This UI will draw a row of 12 keys, with on/off states according to pressed status.
+ */
+ void onDisplay() override
+ {
+ const GraphicsContext& context(getGraphicsContext());
+
+ for (int key = 0; key < 12; ++key)
+ {
+ bool pressed = fKeyState[key];
+ Rectangle<int> bounds = getKeyBounds(key);
+
+ if (pressed)
+ Color(0.8f, 0.5f, 0.3f).setFor(context);
+ else
+ Color(0.3f, 0.5f, 0.8f).setFor(context);
+
+ bounds.draw(context);
+ }
+ }
+
+ /**
+ Mouse press event.
+ This UI will de/activate keys when you click them and reports it as MIDI note events to the plugin.
+ */
+ bool onMouse(const MouseEvent& ev) override
+ {
+ // Test for last key release first
+ if (fLastKey != -1 && ! ev.press)
+ {
+ // Send a note event. Velocity=0 means off
+ sendNote(0, kNoteOctaveStart+fLastKey, 0);
+ // Unset key state
+ fKeyState[fLastKey] = false;
+ fLastKey = -1;
+ repaint();
+ return true;
+ }
+
+ // Test for left-clicked first.
+ if (ev.button != 1)
+ return false;
+
+ // Find the key which is pressed, if any
+ int whichKey = -1;
+ for (int key = 0; key < 12 && whichKey == -1; ++key)
+ {
+ Rectangle<int> bounds = getKeyBounds(key);
+
+ if (bounds.contains(ev.pos))
+ whichKey = key;
+ }
+
+ if (whichKey == -1)
+ return false;
+ if (fKeyState[whichKey] == ev.press)
+ return false;
+
+ // Send a note event. Velocity=0 means off
+ sendNote(0, kNoteOctaveStart+whichKey, ev.press ? kNoteVelocity : 0);
+
+ // Set pressed state of this key, and update display
+ fLastKey = whichKey;
+ fKeyState[whichKey] = ev.press;
+ repaint();
+
+ return true;
+ }
+
+ /**
+ Set our UI class as non-copyable and add a leak detector just in case.
+ */
+ DISTRHO_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(SendNoteExampleUI)
+
+private:
+ /**
+ Get the bounds of a particular key of the virtual MIDI keyboard.
+ */
+ Rectangle<int> getKeyBounds(unsigned index) const
+ {
+ Rectangle<int> bounds;
+ int padding = 8;
+ bounds.setX(64 * index + padding);
+ bounds.setY(padding);
+ bounds.setWidth(64 - padding);
+ bounds.setHeight(64 - padding);
+ return bounds;
+ }
+
+ /**
+ The pressed state of one octave of a virtual MIDI keyboard.
+ */
+ bool fKeyState[12];
+ int8_t fLastKey;
+
+ enum
+ {
+ kNoteVelocity = 100, // velocity of sent Note-On events
+ kNoteOctaveStart = 60, // starting note of the virtual MIDI keyboard
+ };
+};
+
+/* ------------------------------------------------------------------------------------------------------------
+ * UI entry point, called by DPF to create a new UI instance. */
+
+UI* createUI()
+{
+ return new SendNoteExampleUI();
+}
+
+// -----------------------------------------------------------------------------------------------------------
+
+END_NAMESPACE_DISTRHO
