Added the JUCE DSP module

2026-02-04 03:40:07 +00:00 · 2017-07-27 12:39:07 +01:00 · 2017-07-27 12:39:07 +01:00 · 244a944857
commit 244a944857
parent 281c2fe2af
212 changed files with 37051 additions and 1301 deletions
--- a/examples/DSPDemo/Source/Main.cpp
+++ b/examples/DSPDemo/Source/Main.cpp
@ -0,0 +1,186 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2017 - ROLI Ltd.
+
+   JUCE is an open source library subject to commercial or open-source
+   licensing.
+
+   By using JUCE, you agree to the terms of both the JUCE 5 End-User License
+   Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
+   27th April 2017).
+
+   End User License Agreement: www.juce.com/juce-5-licence
+   Privacy Policy: www.juce.com/juce-5-privacy-policy
+
+   Or: You may also use this code under the terms of the GPL v3 (see
+   www.gnu.org/licenses).
+
+   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
+   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
+   DISCLAIMED.
+
+  ==============================================================================
+*/
+
+#include "Main.h"
+
+DSPSamplesApplication::DSPSamplesApplication()
+    : TimeSliceThread ("Audio File Reader Thread"), demoIndex (-1)
+{
+    loopState.addListener (this);
+}
+
+void DSPSamplesApplication::initialise (const String&)
+{
+    formatManager.registerBasicFormats();
+    audioDeviceManager.addAudioCallback (&audioSourcePlayer);
+    audioDeviceManager.initialiseWithDefaultDevices (0, 2);
+
+    setCurrentDemo (0);
+    startThread();
+
+    mainWindow = new MainWindow (getApplicationName());
+}
+
+void DSPSamplesApplication::shutdown()
+{
+    signalThreadShouldExit();
+    stop();
+    audioDeviceManager.removeAudioCallback (&audioSourcePlayer);
+    waitForThreadToExit (10000);
+    mainWindow = nullptr;
+}
+
+//==============================================================================
+DSPSamplesApplication& DSPSamplesApplication::getApp()
+{
+    auto* app = dynamic_cast<DSPSamplesApplication*> (JUCEApplication::getInstance());
+    jassert (app != nullptr);
+    return *app;
+}
+
+//==============================================================================
+bool DSPSamplesApplication::loadFile (const File& fileToPlay)
+{
+    stop();
+
+    audioSourcePlayer.setSource (nullptr);
+    mainWindow->setTransportSource (nullptr);
+    transportSource = nullptr;
+    readerSource = nullptr;
+
+    reader = formatManager.createReaderFor (fileToPlay);
+
+    if (reader != nullptr)
+    {
+        readerSource = new AudioFormatReaderSource (reader, false);
+        readerSource->setLooping (loopState.getValue());
+
+        init();
+
+        return true;
+    }
+
+    return false;
+}
+
+void DSPSamplesApplication::togglePlay()
+{
+    if (playState.getValue())
+        stop();
+    else
+        play();
+}
+
+void DSPSamplesApplication::stop()
+{
+    playState = false;
+
+    if (transportSource != nullptr)
+    {
+        transportSource->stop();
+        transportSource->setPosition (0);
+    }
+}
+
+void DSPSamplesApplication::init()
+{
+    if (transportSource == nullptr)
+    {
+        transportSource = new AudioTransportSource();
+        transportSource->addChangeListener (this);
+
+        if (readerSource != nullptr)
+        {
+            if (auto* device = audioDeviceManager.getCurrentAudioDevice())
+            {
+                transportSource->setSource (readerSource, roundToInt (device->getCurrentSampleRate()), this, reader->sampleRate);
+
+                // tell the main window about this so that it can do the seeking behaviour...
+                mainWindow->setTransportSource (transportSource);
+            }
+        }
+    }
+
+    audioSourcePlayer.setSource (nullptr);
+    currentDemo = nullptr;
+
+    if (currentDemo == nullptr)
+        if (auto demo = Demo::getList()[demoIndex])
+            if (demo->name.isNotEmpty())
+                currentDemo = demo->createDemo (*transportSource);
+
+    audioSourcePlayer.setSource (currentDemo);
+
+    if (mainWindow != nullptr)
+        mainWindow->initParameters();
+}
+
+void DSPSamplesApplication::play()
+{
+    if (readerSource == nullptr)
+        return;
+
+    if (transportSource->getCurrentPosition() >= transportSource->getLengthInSeconds()
+         || transportSource->getCurrentPosition() < 0)
+        transportSource->setPosition (0);
+
+    transportSource->start();
+    playState = true;
+}
+
+void DSPSamplesApplication::setLooping (bool shouldLoop)
+{
+    if (readerSource != nullptr)
+        readerSource->setLooping (shouldLoop);
+}
+
+void DSPSamplesApplication::changeListenerCallback (ChangeBroadcaster*)
+{
+    if (playState.getValue() && ! transportSource->isPlaying())
+        stop();
+}
+
+void DSPSamplesApplication::setCurrentDemo (int index, bool force)
+{
+    if ((index != demoIndex || force) && isPositiveAndBelow (index, Demo::getList().size()))
+    {
+        demoIndex = index;
+        init();
+
+        if (playState.getValue())
+            play();
+    }
+}
+
+void DSPSamplesApplication::valueChanged (Value& v)
+{
+    if (readerSource != nullptr)
+        readerSource->setLooping (v.getValue());
+}
+
+//==============================================================================
+// This macro generates the main() routine that launches the app.
+START_JUCE_APPLICATION (DSPSamplesApplication)