346 lines
13 KiB
C
346 lines
13 KiB
C
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/*
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==============================================================================
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This file is part of the JUCE examples.
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Copyright (c) 2020 - Raw Material Software Limited
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The code included in this file is provided under the terms of the ISC license
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http://www.isc.org/downloads/software-support-policy/isc-license. Permission
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To use, copy, modify, and/or distribute this software for any purpose with or
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without fee is hereby granted provided that the above copyright notice and
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this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES,
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WHETHER EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR
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PURPOSE, ARE DISCLAIMED.
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==============================================================================
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*/
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/*******************************************************************************
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The block below describes the properties of this PIP. A PIP is a short snippet
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of code that can be read by the Projucer and used to generate a JUCE project.
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BEGIN_JUCE_PIP_METADATA
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name: MIDILogger
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version: 1.0.0
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vendor: JUCE
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website: http://juce.com
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description: Logs incoming MIDI messages.
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dependencies: juce_audio_basics, juce_audio_devices, juce_audio_formats,
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juce_audio_plugin_client, juce_audio_processors,
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juce_audio_utils, juce_core, juce_data_structures,
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juce_events, juce_graphics, juce_gui_basics, juce_gui_extra
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exporters: xcode_mac, vs2019, linux_make
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moduleFlags: JUCE_STRICT_REFCOUNTEDPOINTER=1
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type: AudioProcessor
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mainClass: MidiLoggerPluginDemoProcessor
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useLocalCopy: 1
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pluginCharacteristics: pluginWantsMidiIn, pluginProducesMidiOut, pluginIsMidiEffectPlugin
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END_JUCE_PIP_METADATA
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*******************************************************************************/
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#pragma once
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#include <iterator>
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class MidiQueue
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{
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public:
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void push (const MidiBuffer& buffer)
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{
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for (const auto metadata : buffer)
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fifo.write (1).forEach ([&] (int dest) { messages[(size_t) dest] = metadata.getMessage(); });
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}
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template <typename OutputIt>
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void pop (OutputIt out)
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{
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fifo.read (fifo.getNumReady()).forEach ([&] (int source) { *out++ = messages[(size_t) source]; });
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}
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private:
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static constexpr auto queueSize = 1 << 14;
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AbstractFifo fifo { queueSize };
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std::vector<MidiMessage> messages = std::vector<MidiMessage> (queueSize);
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};
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// Stores the last N messages. Safe to access from the message thread only.
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class MidiListModel
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{
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public:
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template <typename It>
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void addMessages (It begin, It end)
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{
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const auto numNewMessages = (int) std::distance (begin, end);
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const auto numToAdd = juce::jmin (numToStore, numNewMessages);
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const auto numToRemove = jmax (0, (int) messages.size() + numToAdd - numToStore);
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messages.erase (messages.begin(), std::next (messages.begin(), numToRemove));
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messages.insert (messages.end(), std::prev (end, numToAdd), end);
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if (onChange != nullptr)
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onChange();
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}
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void clear()
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{
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messages.clear();
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if (onChange != nullptr)
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onChange();
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}
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const MidiMessage& operator[] (size_t ind) const { return messages[ind]; }
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size_t size() const { return messages.size(); }
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std::function<void()> onChange;
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private:
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static constexpr auto numToStore = 1000;
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std::vector<MidiMessage> messages;
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};
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//==============================================================================
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class MidiTable : public Component,
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private TableListBoxModel
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{
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public:
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MidiTable (MidiListModel& m)
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: messages (m)
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{
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addAndMakeVisible (table);
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table.setModel (this);
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table.setClickingTogglesRowSelection (false);
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table.setHeader ([&]
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{
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auto header = std::make_unique<TableHeaderComponent>();
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header->addColumn ("Message", messageColumn, 200, 30, -1, TableHeaderComponent::notSortable);
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header->addColumn ("Channel", channelColumn, 100, 30, -1, TableHeaderComponent::notSortable);
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header->addColumn ("Data", dataColumn, 200, 30, -1, TableHeaderComponent::notSortable);
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return header;
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}());
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messages.onChange = [&] { table.updateContent(); };
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}
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~MidiTable() override { messages.onChange = nullptr; }
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void resized() override { table.setBounds (getLocalBounds()); }
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private:
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enum
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{
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messageColumn = 1,
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channelColumn,
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dataColumn
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};
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int getNumRows() override { return (int) messages.size(); }
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void paintRowBackground (Graphics&, int, int, int, bool) override {}
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void paintCell (Graphics&, int, int, int, int, bool) override {}
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Component* refreshComponentForCell (int rowNumber,
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int columnId,
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bool,
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Component* existingComponentToUpdate) override
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{
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delete existingComponentToUpdate;
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const auto index = (int) messages.size() - 1 - rowNumber;
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const auto message = messages[(size_t) index];
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return new Label ({}, [&]
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{
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switch (columnId)
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{
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case messageColumn: return getEventString (message);
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case channelColumn: return String (message.getChannel());
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case dataColumn: return getDataString (message);
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default: break;
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}
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jassertfalse;
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return String();
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}());
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}
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static String getEventString (const MidiMessage& m)
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{
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if (m.isNoteOn()) return "Note on";
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if (m.isNoteOff()) return "Note off";
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if (m.isProgramChange()) return "Program change";
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if (m.isPitchWheel()) return "Pitch wheel";
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if (m.isAftertouch()) return "Aftertouch";
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if (m.isChannelPressure()) return "Channel pressure";
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if (m.isAllNotesOff()) return "All notes off";
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if (m.isAllSoundOff()) return "All sound off";
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if (m.isMetaEvent()) return "Meta event";
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if (m.isController())
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{
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const auto* name = MidiMessage::getControllerName (m.getControllerNumber());
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return "Controller " + (name == nullptr ? String (m.getControllerNumber()) : String (name));
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}
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return String::toHexString (m.getRawData(), m.getRawDataSize());
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}
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static String getDataString (const MidiMessage& m)
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{
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if (m.isNoteOn()) return MidiMessage::getMidiNoteName (m.getNoteNumber(), true, true, 3) + " Velocity " + String (m.getVelocity());
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if (m.isNoteOff()) return MidiMessage::getMidiNoteName (m.getNoteNumber(), true, true, 3) + " Velocity " + String (m.getVelocity());
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if (m.isProgramChange()) return String (m.getProgramChangeNumber());
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if (m.isPitchWheel()) return String (m.getPitchWheelValue());
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if (m.isAftertouch()) return MidiMessage::getMidiNoteName (m.getNoteNumber(), true, true, 3) + ": " + String (m.getAfterTouchValue());
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if (m.isChannelPressure()) return String (m.getChannelPressureValue());
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if (m.isController()) return String (m.getControllerValue());
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return {};
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}
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MidiListModel& messages;
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TableListBox table;
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};
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//==============================================================================
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class MidiLoggerPluginDemoProcessor : public AudioProcessor,
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private Timer
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{
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public:
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MidiLoggerPluginDemoProcessor()
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: AudioProcessor (getBusesLayout())
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{
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state.addChild ({ "uiState", { { "width", 500 }, { "height", 300 } }, {} }, -1, nullptr);
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startTimerHz (60);
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}
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~MidiLoggerPluginDemoProcessor() override { stopTimer(); }
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void processBlock (AudioBuffer<float>& audio, MidiBuffer& midi) override { process (audio, midi); }
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void processBlock (AudioBuffer<double>& audio, MidiBuffer& midi) override { process (audio, midi); }
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bool isBusesLayoutSupported (const BusesLayout&) const override { return true; }
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bool isMidiEffect() const override { return true; }
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bool hasEditor() const override { return true; }
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AudioProcessorEditor* createEditor() override { return new Editor (*this); }
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const String getName() const override { return "MIDI Logger"; }
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bool acceptsMidi() const override { return true; }
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bool producesMidi() const override { return true; }
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double getTailLengthSeconds() const override { return 0.0; }
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int getNumPrograms() override { return 0; }
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int getCurrentProgram() override { return 0; }
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void setCurrentProgram (int) override {}
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const String getProgramName (int) override { return "None"; }
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void changeProgramName (int, const String&) override {}
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void prepareToPlay (double, int) override {}
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void releaseResources() override {}
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void getStateInformation (MemoryBlock& destData) override
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{
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if (auto xmlState = state.createXml())
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copyXmlToBinary (*xmlState, destData);
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}
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void setStateInformation (const void* data, int size) override
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{
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if (auto xmlState = getXmlFromBinary (data, size))
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state = ValueTree::fromXml (*xmlState);
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}
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private:
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class Editor : public AudioProcessorEditor,
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private Value::Listener
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{
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public:
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explicit Editor (MidiLoggerPluginDemoProcessor& ownerIn)
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: AudioProcessorEditor (ownerIn),
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owner (ownerIn),
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table (owner.model)
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{
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addAndMakeVisible (table);
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addAndMakeVisible (clearButton);
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setResizable (true, true);
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lastUIWidth .referTo (owner.state.getChildWithName ("uiState").getPropertyAsValue ("width", nullptr));
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lastUIHeight.referTo (owner.state.getChildWithName ("uiState").getPropertyAsValue ("height", nullptr));
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setSize (lastUIWidth.getValue(), lastUIHeight.getValue());
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lastUIWidth. addListener (this);
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lastUIHeight.addListener (this);
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clearButton.onClick = [&] { owner.model.clear(); };
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}
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void paint (Graphics& g) override
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{
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g.fillAll (getLookAndFeel().findColour (ResizableWindow::backgroundColourId));
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}
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void resized() override
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{
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auto bounds = getLocalBounds();
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clearButton.setBounds (bounds.removeFromBottom (30).withSizeKeepingCentre (50, 24));
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table.setBounds (bounds);
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lastUIWidth = getWidth();
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lastUIHeight = getHeight();
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}
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private:
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void valueChanged (Value&) override
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{
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setSize (lastUIWidth.getValue(), lastUIHeight.getValue());
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}
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MidiLoggerPluginDemoProcessor& owner;
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MidiTable table;
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TextButton clearButton { "Clear" };
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Value lastUIWidth, lastUIHeight;
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};
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void timerCallback() override
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{
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std::vector<MidiMessage> messages;
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queue.pop (std::back_inserter (messages));
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model.addMessages (messages.begin(), messages.end());
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}
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template <typename Element>
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void process (AudioBuffer<Element>& audio, MidiBuffer& midi)
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{
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audio.clear();
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queue.push (midi);
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}
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static BusesProperties getBusesLayout()
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{
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// Live doesn't like to load midi-only plugins, so we add an audio output there.
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return PluginHostType().isAbletonLive() ? BusesProperties().withOutput ("out", AudioChannelSet::stereo())
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: BusesProperties();
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}
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ValueTree state { "state" };
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MidiQueue queue;
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MidiListModel model; // The data to show in the UI. We keep it around in the processor so that
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// the view is persistent even when the plugin UI is closed and reopened.
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (MidiLoggerPluginDemoProcessor)
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};
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