mirror of
https://github.com/juce-framework/JUCE.git
synced 2026-01-10 23:44:24 +00:00
434 lines
19 KiB
C++
434 lines
19 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE framework.
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Copyright (c) Raw Material Software Limited
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JUCE is an open source framework subject to commercial or open source
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licensing.
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By downloading, installing, or using the JUCE framework, or combining the
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JUCE framework with any other source code, object code, content or any other
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copyrightable work, you agree to the terms of the JUCE End User Licence
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Agreement, and all incorporated terms including the JUCE Privacy Policy and
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the JUCE Website Terms of Service, as applicable, which will bind you. If you
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do not agree to the terms of these agreements, we will not license the JUCE
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framework to you, and you must discontinue the installation or download
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process and cease use of the JUCE framework.
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JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
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JUCE Privacy Policy: https://juce.com/juce-privacy-policy
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JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/
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Or:
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You may also use this code under the terms of the AGPLv3:
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https://www.gnu.org/licenses/agpl-3.0.en.html
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THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
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WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
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MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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//==============================================================================
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// This byte-code is generated from native/java/com/rmsl/juce/JuceOpenGLView.java with min sdk version 16
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// See juce_core/native/java/README.txt on how to generate this byte-code.
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static const uint8 javaJuceOpenGLView[] =
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{
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0x6f, 0x35, 0x52, 0xff, 0xaa, 0x12, 0xd5, 0x4a, 0xfd, 0x07, 0xf4, 0x3a,
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0x10, 0x32, 0xcc, 0x8b, 0xa0, 0x6a, 0x93, 0xf4, 0xb7, 0x0a, 0xa9, 0x50,
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0x9b, 0xb4, 0xdb, 0xa5, 0xdd, 0x21, 0xa4, 0x4a, 0x9d, 0xd2, 0xaf, 0xc8,
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0xba, 0xfc, 0x51, 0xa5, 0xfc, 0x24, 0x1d, 0x51, 0x44, 0xb8, 0xef, 0x29,
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0x65, 0x33, 0x06, 0x14, 0x03, 0x8a, 0x91, 0x21, 0x25, 0x47, 0x6a, 0xce,
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0xfd, 0xf8, 0x27, 0x19, 0xee, 0x02, 0x9b, 0x9f, 0x67, 0x1b, 0x5a, 0xe4,
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0xbe, 0x4a, 0x2a, 0xa0, 0x00, 0x11, 0x65, 0x91, 0x29, 0xec, 0x19, 0x53,
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0x94, 0x6f, 0x90, 0xbf, 0x98, 0xca, 0x96, 0x22, 0xf2, 0xde, 0xd3, 0x8e,
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0xef, 0x84, 0xcb, 0xed, 0x99, 0xa6, 0x52, 0x75, 0xae, 0x69, 0x54, 0x9d,
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0x6d, 0x8c, 0xaa, 0xf3, 0x6d, 0xbb, 0x06, 0x9f, 0x71, 0x51, 0xaa, 0xce,
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0x39, 0x25, 0x25, 0xe7, 0x04, 0xd7, 0x13, 0xd5, 0x59, 0xa2, 0xa6, 0xc2,
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0xfa, 0x7c, 0xfe, 0x69, 0x32, 0x87, 0xdf, 0x45, 0x4a, 0x85, 0x6b, 0xc5,
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0x3d, 0x4d, 0x84, 0x3a, 0x9f, 0xaf, 0x7f, 0x00, 0x34, 0xf2, 0xd3, 0x47,
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0x98, 0x05, 0x00, 0x00
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};
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//==============================================================================
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//==============================================================================
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class OpenGLContext::NativeContext : private SurfaceHolderCallback
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{
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public:
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NativeContext (Component& comp,
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const OpenGLPixelFormat& pixelFormat,
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void* /*contextToShareWith*/,
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bool useMultisamplingIn,
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OpenGLVersion)
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: component (comp)
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{
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auto env = getEnv();
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// Do we have a native peer that we can attach to?
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if (component.getPeer()->getNativeHandle() == nullptr)
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return;
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// Initialise the EGL display
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if (! initEGLDisplay (pixelFormat, useMultisamplingIn))
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return;
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// create a native surface view
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surfaceView = GlobalRef (LocalRef<jobject> (env->NewObject (JuceOpenGLViewSurface,
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JuceOpenGLViewSurface.constructor,
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getAppContext().get(),
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reinterpret_cast<jlong> (this))));
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if (surfaceView.get() == nullptr)
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return;
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// add the view to the view hierarchy
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// after this the nativecontext can receive callbacks
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env->CallVoidMethod ((jobject) component.getPeer()->getNativeHandle(),
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AndroidViewGroup.addView, surfaceView.get());
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// initialise the geometry of the view
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updateWindowPosition (component.localAreaToGlobal (component.getLocalBounds()));
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hasInitialised = true;
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}
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~NativeContext() override
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{
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auto env = getEnv();
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if (jobject viewParent = env->CallObjectMethod (surfaceView.get(), JuceOpenGLViewSurface.getParent))
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env->CallVoidMethod (viewParent, AndroidViewGroup.removeView, surfaceView.get());
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}
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//==============================================================================
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InitResult initialiseOnRenderThread (OpenGLContext& ctx)
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{
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// The "real" initialisation happens when the surface is created. Here, we'll
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// just return true if the initialisation happened successfully, or false if
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// it hasn't happened yet, or was unsuccessful.
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const std::lock_guard lock { nativeHandleMutex };
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if (! hasInitialised)
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return InitResult::fatal;
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if (context.get() == EGL_NO_CONTEXT && surface.get() == EGL_NO_SURFACE)
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return InitResult::retry;
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juceContext = &ctx;
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return InitResult::success;
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}
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void shutdownOnRenderThread()
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{
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const std::lock_guard lock { nativeHandleMutex };
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juceContext = nullptr;
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}
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//==============================================================================
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bool makeActive() const noexcept
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{
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const std::lock_guard lock { nativeHandleMutex };
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return hasInitialised
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&& surface.get() != EGL_NO_SURFACE
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&& context.get() != EGL_NO_CONTEXT
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&& eglMakeCurrent (display, surface.get(), surface.get(), context.get());
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}
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bool isActive() const noexcept
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{
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const std::lock_guard lock { nativeHandleMutex };
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return eglGetCurrentContext() == context.get();
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}
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static void deactivateCurrentContext()
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{
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eglMakeCurrent (display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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}
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//==============================================================================
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void swapBuffers() const noexcept { eglSwapBuffers (display, surface.get()); }
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bool setSwapInterval (int) { return false; }
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int getSwapInterval() const { return 0; }
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//==============================================================================
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bool createdOk() const noexcept { return hasInitialised; }
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void* getRawContext() const noexcept { return surfaceView.get(); }
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GLuint getFrameBufferID() const noexcept { return 0; }
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//==============================================================================
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void updateWindowPosition (Rectangle<int> bounds)
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{
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const auto physical = Desktop::getInstance().getDisplays().logicalToPhysical (bounds.toFloat()).toNearestInt();
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if (std::exchange (physicalBounds, physical) == physical)
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return;
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getEnv()->CallVoidMethod (surfaceView.get(),
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JuceOpenGLViewSurface.layout,
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(jint) physical.getX(),
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(jint) physical.getY(),
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(jint) physical.getRight(),
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(jint) physical.getBottom());
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}
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//==============================================================================
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// Android Surface Callbacks:
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void surfaceChanged ([[maybe_unused]] LocalRef<jobject> holder,
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[[maybe_unused]] int format,
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[[maybe_unused]] int width,
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[[maybe_unused]] int height) override
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{
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}
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void surfaceCreated (LocalRef<jobject>) override;
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void surfaceDestroyed (LocalRef<jobject>) override;
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//==============================================================================
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struct Locker
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{
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explicit Locker (NativeContext& ctx) : lock (ctx.mutex) {}
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const ScopedLock lock;
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};
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void addListener (NativeContextListener& l)
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{
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listeners.add (&l);
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}
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void removeListener (NativeContextListener& l)
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{
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listeners.remove (&l);
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}
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void notifyWillPause()
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{
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listeners.call ([&] (auto& l) { l.contextWillPause(); });
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}
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void notifyDidResume()
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{
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listeners.call ([&] (auto& l) { l.contextDidResume(); });
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}
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Component& component;
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private:
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#define JNI_CLASS_MEMBERS(METHOD, STATICMETHOD, FIELD, STATICFIELD, CALLBACK) \
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METHOD (constructor, "<init>", "(Landroid/content/Context;J)V") \
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METHOD (getParent, "getParent", "()Landroid/view/ViewParent;") \
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METHOD (getHolder, "getHolder", "()Landroid/view/SurfaceHolder;") \
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METHOD (layout, "layout", "(IIII)V" ) \
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CALLBACK (generatedCallback<&NativeContext::attachedToWindow>, "onAttchedWindowNative", "(J)V") \
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CALLBACK (generatedCallback<&NativeContext::detachedFromWindow>, "onDetachedFromWindowNative", "(J)V") \
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CALLBACK (generatedCallback<&NativeContext::dispatchDraw>, "onDrawNative", "(JLandroid/graphics/Canvas;)V")
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DECLARE_JNI_CLASS_WITH_BYTECODE (JuceOpenGLViewSurface, "com/rmsl/juce/JuceOpenGLView", 16, javaJuceOpenGLView)
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#undef JNI_CLASS_MEMBERS
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//==============================================================================
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static void attachedToWindow (JNIEnv* env, NativeContext& t)
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{
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LocalRef<jobject> holder (env->CallObjectMethod (t.surfaceView.get(), JuceOpenGLViewSurface.getHolder));
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if (t.surfaceHolderCallback == nullptr)
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t.surfaceHolderCallback = GlobalRef (CreateJavaInterface (&t, "android/view/SurfaceHolder$Callback"));
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env->CallVoidMethod (holder, AndroidSurfaceHolder.addCallback, t.surfaceHolderCallback.get());
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}
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static void detachedFromWindow (JNIEnv* env, NativeContext& t)
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{
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if (t.surfaceHolderCallback != nullptr)
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{
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LocalRef<jobject> holder (env->CallObjectMethod (t.surfaceView.get(), JuceOpenGLViewSurface.getHolder));
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env->CallVoidMethod (holder.get(), AndroidSurfaceHolder.removeCallback, t.surfaceHolderCallback.get());
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t.surfaceHolderCallback.clear();
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}
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}
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static void dispatchDraw (JNIEnv*, NativeContext& t, jobject /*canvas*/)
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{
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const std::lock_guard lock { t.nativeHandleMutex };
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if (t.juceContext != nullptr)
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t.juceContext->triggerRepaint();
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}
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bool tryChooseConfig (const std::vector<EGLint>& optionalAttribs)
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{
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std::vector<EGLint> allAttribs
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{
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EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
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EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
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EGL_BLUE_SIZE, 8,
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EGL_GREEN_SIZE, 8,
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EGL_RED_SIZE, 8,
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EGL_ALPHA_SIZE, 0,
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EGL_DEPTH_SIZE, 16
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};
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|
|
|
allAttribs.insert (allAttribs.end(), optionalAttribs.begin(), optionalAttribs.end());
|
|
|
|
allAttribs.push_back (EGL_NONE);
|
|
|
|
EGLint numConfigs{};
|
|
return eglChooseConfig (display, allAttribs.data(), &config, 1, &numConfigs);
|
|
}
|
|
|
|
//==============================================================================
|
|
bool initEGLDisplay (const OpenGLPixelFormat& pixelFormat, bool multisample)
|
|
{
|
|
// already initialised?
|
|
if (display != EGL_NO_DISPLAY)
|
|
return true;
|
|
|
|
if ((display = eglGetDisplay (EGL_DEFAULT_DISPLAY)) == EGL_NO_DISPLAY)
|
|
{
|
|
jassertfalse;
|
|
return false;
|
|
}
|
|
|
|
if (! eglInitialize (display, nullptr, nullptr))
|
|
{
|
|
jassertfalse;
|
|
return false;
|
|
}
|
|
|
|
if (tryChooseConfig ({ EGL_SAMPLE_BUFFERS, multisample ? 1 : 0, EGL_SAMPLES, pixelFormat.multisamplingLevel }))
|
|
return true;
|
|
|
|
if (tryChooseConfig ({}))
|
|
return true;
|
|
|
|
eglTerminate (display);
|
|
jassertfalse;
|
|
return false;
|
|
}
|
|
|
|
struct NativeWindowReleaser
|
|
{
|
|
void operator() (ANativeWindow* ptr) const { if (ptr != nullptr) ANativeWindow_release (ptr); }
|
|
};
|
|
|
|
std::unique_ptr<ANativeWindow, NativeWindowReleaser> getNativeWindow() const
|
|
{
|
|
auto* env = getEnv();
|
|
|
|
const LocalRef<jobject> holder (env->CallObjectMethod (surfaceView.get(), JuceOpenGLViewSurface.getHolder));
|
|
|
|
if (holder == nullptr)
|
|
return nullptr;
|
|
|
|
const LocalRef<jobject> jSurface (env->CallObjectMethod (holder.get(), AndroidSurfaceHolder.getSurface));
|
|
|
|
if (jSurface == nullptr)
|
|
return nullptr;
|
|
|
|
constexpr auto numAttempts = 2;
|
|
|
|
for (auto i = 0; i < numAttempts; Thread::sleep (200), ++i)
|
|
if (auto* ptr = ANativeWindow_fromSurface (env, jSurface.get()))
|
|
return std::unique_ptr<ANativeWindow, NativeWindowReleaser> { ptr };
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
//==============================================================================
|
|
CriticalSection mutex;
|
|
bool hasInitialised = false;
|
|
|
|
GlobalRef surfaceView;
|
|
Rectangle<int> physicalBounds;
|
|
|
|
struct SurfaceDestructor
|
|
{
|
|
void operator() (EGLSurface x) const { if (x != EGL_NO_SURFACE) eglDestroySurface (display, x); }
|
|
};
|
|
|
|
struct ContextDestructor
|
|
{
|
|
void operator() (EGLContext x) const { if (x != EGL_NO_CONTEXT) eglDestroyContext (display, x); }
|
|
};
|
|
|
|
mutable std::mutex nativeHandleMutex;
|
|
OpenGLContext* juceContext = nullptr;
|
|
ListenerList<NativeContextListener> listeners;
|
|
std::unique_ptr<std::remove_pointer_t<EGLSurface>, SurfaceDestructor> surface { EGL_NO_SURFACE };
|
|
std::unique_ptr<std::remove_pointer_t<EGLContext>, ContextDestructor> context { EGL_NO_CONTEXT };
|
|
|
|
GlobalRef surfaceHolderCallback;
|
|
|
|
inline static EGLDisplay display = EGL_NO_DISPLAY;
|
|
inline static EGLConfig config;
|
|
|
|
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (NativeContext)
|
|
};
|
|
|
|
//==============================================================================
|
|
bool OpenGLHelpers::isContextActive()
|
|
{
|
|
return eglGetCurrentContext() != EGL_NO_CONTEXT;
|
|
}
|
|
|
|
} // namespace juce
|