/* ============================================================================== This file is part of the JUCE library. Copyright (c) 2022 - Raw Material Software Limited 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 7 End-User License Agreement and JUCE Privacy Policy. End User License Agreement: www.juce.com/juce-7-licence Privacy Policy: www.juce.com/juce-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. ============================================================================== */ namespace juce { //============================================================================== // This byte-code is generated from native/java/com/rmsl/juce/JuceOpenGLView.java with min sdk version 16 // See juce_core/native/java/README.txt on how to generate this byte-code. static const uint8 javaJuceOpenGLView[] = { 0x1f, 0x8b, 0x08, 0x08, 0xac, 0xdb, 0x8b, 0x62, 0x00, 0x03, 0x4a, 0x61, 0x76, 0x61, 0x44, 0x65, 0x78, 0x42, 0x79, 0x74, 0x65, 0x43, 0x6f, 0x64, 0x65, 0x2e, 0x64, 0x65, 0x78, 0x00, 0x6d, 0x54, 0x4f, 0x48, 0x14, 0x51, 0x18, 0xff, 0x66, 0xe6, 0xed, 0x6e, 0xea, 0x3a, 0xae, 0xeb, 0x7f, 0xc1, 0xd8, 0x20, 0xea, 0x64, 0x6b, 0x7f, 0xac, 0x40, 0x0b, 0x4d, 0xfb, 0xb7, 0x0d, 0x4a, 0x69, 0x5b, 0x6c, 0x1d, 0x9a, 0x66, 0x27, 0x77, 0x44, 0x67, 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0x00, 0x11, 0x65, 0x91, 0x29, 0xec, 0x19, 0x53, 0x94, 0x6f, 0x90, 0xbf, 0x98, 0xca, 0x96, 0x22, 0xf2, 0xde, 0xd3, 0x8e, 0xef, 0x84, 0xcb, 0xed, 0x99, 0xa6, 0x52, 0x75, 0xae, 0x69, 0x54, 0x9d, 0x6d, 0x8c, 0xaa, 0xf3, 0x6d, 0xbb, 0x06, 0x9f, 0x71, 0x51, 0xaa, 0xce, 0x39, 0x25, 0x25, 0xe7, 0x04, 0xd7, 0x13, 0xd5, 0x59, 0xa2, 0xa6, 0xc2, 0xfa, 0x7c, 0xfe, 0x69, 0x32, 0x87, 0xdf, 0x45, 0x4a, 0x85, 0x6b, 0xc5, 0x3d, 0x4d, 0x84, 0x3a, 0x9f, 0xaf, 0x7f, 0x00, 0x34, 0xf2, 0xd3, 0x47, 0x98, 0x05, 0x00, 0x00 }; //============================================================================== //============================================================================== class OpenGLContext::NativeContext : private SurfaceHolderCallback { public: NativeContext (Component& comp, const OpenGLPixelFormat& pixelFormat, void* /*contextToShareWith*/, bool useMultisamplingIn, OpenGLVersion) : component (comp) { auto env = getEnv(); // Do we have a native peer that we can attach to? if (component.getPeer()->getNativeHandle() == nullptr) return; // Initialise the EGL display if (! initEGLDisplay (pixelFormat, useMultisamplingIn)) return; // create a native surface view surfaceView = GlobalRef (LocalRef (env->NewObject (JuceOpenGLViewSurface, JuceOpenGLViewSurface.constructor, getAppContext().get(), reinterpret_cast (this)))); if (surfaceView.get() == nullptr) return; // add the view to the view hierarchy // after this the nativecontext can receive callbacks env->CallVoidMethod ((jobject) component.getPeer()->getNativeHandle(), AndroidViewGroup.addView, surfaceView.get()); // initialise the geometry of the view auto bounds = component.getTopLevelComponent()->getLocalArea (&component, component.getLocalBounds()); bounds *= component.getDesktopScaleFactor(); updateWindowPosition (bounds); hasInitialised = true; } ~NativeContext() override { auto env = getEnv(); if (jobject viewParent = env->CallObjectMethod (surfaceView.get(), JuceOpenGLViewSurface.getParent)) env->CallVoidMethod (viewParent, AndroidViewGroup.removeView, surfaceView.get()); } //============================================================================== InitResult initialiseOnRenderThread (OpenGLContext& ctx) { // The "real" initialisation happens when the surface is created. Here, we'll // just return true if the initialisation happened successfully, or false if // it hasn't happened yet, or was unsuccessful. const std::lock_guard lock { nativeHandleMutex }; if (! hasInitialised) return InitResult::fatal; if (context.get() == EGL_NO_CONTEXT && surface.get() == EGL_NO_SURFACE) return InitResult::retry; juceContext = &ctx; return InitResult::success; } void shutdownOnRenderThread() { const std::lock_guard lock { nativeHandleMutex }; juceContext = nullptr; } //============================================================================== bool makeActive() const noexcept { const std::lock_guard lock { nativeHandleMutex }; return hasInitialised && surface.get() != EGL_NO_SURFACE && context.get() != EGL_NO_CONTEXT && eglMakeCurrent (display, surface.get(), surface.get(), context.get()); } bool isActive() const noexcept { const std::lock_guard lock { nativeHandleMutex }; return eglGetCurrentContext() == context.get(); } static void deactivateCurrentContext() { eglMakeCurrent (display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); } //============================================================================== void swapBuffers() const noexcept { eglSwapBuffers (display, surface.get()); } bool setSwapInterval (int) { return false; } int getSwapInterval() const { return 0; } //============================================================================== bool createdOk() const noexcept { return hasInitialised; } void* getRawContext() const noexcept { return surfaceView.get(); } GLuint getFrameBufferID() const noexcept { return 0; } //============================================================================== void updateWindowPosition (Rectangle bounds) { if (lastBounds != bounds) { auto env = getEnv(); lastBounds = bounds; auto r = bounds * Desktop::getInstance().getDisplays().getPrimaryDisplay()->scale; env->CallVoidMethod (surfaceView.get(), JuceOpenGLViewSurface.layout, (jint) r.getX(), (jint) r.getY(), (jint) r.getRight(), (jint) r.getBottom()); } } //============================================================================== // Android Surface Callbacks: void surfaceChanged ([[maybe_unused]] LocalRef holder, [[maybe_unused]] int format, [[maybe_unused]] int width, [[maybe_unused]] int height) override { } void surfaceCreated (LocalRef) override; void surfaceDestroyed (LocalRef) override; //============================================================================== struct Locker { explicit Locker (NativeContext& ctx) : lock (ctx.mutex) {} const ScopedLock lock; }; Component& component; private: #define JNI_CLASS_MEMBERS(METHOD, STATICMETHOD, FIELD, STATICFIELD, CALLBACK) \ METHOD (constructor, "", "(Landroid/content/Context;J)V") \ METHOD (getParent, "getParent", "()Landroid/view/ViewParent;") \ METHOD (getHolder, "getHolder", "()Landroid/view/SurfaceHolder;") \ METHOD (layout, "layout", "(IIII)V" ) \ CALLBACK (generatedCallback<&NativeContext::attachedToWindow>, "onAttchedWindowNative", "(J)V") \ CALLBACK (generatedCallback<&NativeContext::detachedFromWindow>, "onDetachedFromWindowNative", "(J)V") \ CALLBACK (generatedCallback<&NativeContext::dispatchDraw>, "onDrawNative", "(JLandroid/graphics/Canvas;)V") DECLARE_JNI_CLASS_WITH_BYTECODE (JuceOpenGLViewSurface, "com/rmsl/juce/JuceOpenGLView", 16, javaJuceOpenGLView) #undef JNI_CLASS_MEMBERS //============================================================================== static void attachedToWindow (JNIEnv* env, NativeContext& t) { LocalRef holder (env->CallObjectMethod (t.surfaceView.get(), JuceOpenGLViewSurface.getHolder)); if (t.surfaceHolderCallback == nullptr) t.surfaceHolderCallback = GlobalRef (CreateJavaInterface (&t, "android/view/SurfaceHolder$Callback")); env->CallVoidMethod (holder, AndroidSurfaceHolder.addCallback, t.surfaceHolderCallback.get()); } static void detachedFromWindow (JNIEnv* env, NativeContext& t) { if (t.surfaceHolderCallback != nullptr) { LocalRef holder (env->CallObjectMethod (t.surfaceView.get(), JuceOpenGLViewSurface.getHolder)); env->CallVoidMethod (holder.get(), AndroidSurfaceHolder.removeCallback, t.surfaceHolderCallback.get()); t.surfaceHolderCallback.clear(); } } static void dispatchDraw (JNIEnv*, NativeContext& t, jobject /*canvas*/) { const std::lock_guard lock { t.nativeHandleMutex }; if (t.juceContext != nullptr) t.juceContext->triggerRepaint(); } bool tryChooseConfig (const std::vector& optionalAttribs) { std::vector allAttribs { EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT, EGL_SURFACE_TYPE, EGL_WINDOW_BIT, EGL_BLUE_SIZE, 8, EGL_GREEN_SIZE, 8, EGL_RED_SIZE, 8, EGL_ALPHA_SIZE, 0, EGL_DEPTH_SIZE, 16 }; 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 getNativeWindow() const { auto* env = getEnv(); const LocalRef holder (env->CallObjectMethod (surfaceView.get(), JuceOpenGLViewSurface.getHolder)); if (holder == nullptr) return nullptr; const LocalRef 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 { ptr }; return nullptr; } //============================================================================== CriticalSection mutex; bool hasInitialised = false; GlobalRef surfaceView; Rectangle lastBounds; 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; std::unique_ptr, SurfaceDestructor> surface { EGL_NO_SURFACE }; std::unique_ptr, ContextDestructor> context { EGL_NO_CONTEXT }; GlobalRef surfaceHolderCallback; static EGLDisplay display; static EGLConfig config; JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (NativeContext) }; EGLDisplay OpenGLContext::NativeContext::display = EGL_NO_DISPLAY; EGLDisplay OpenGLContext::NativeContext::config; //============================================================================== bool OpenGLHelpers::isContextActive() { return eglGetCurrentContext() != EGL_NO_CONTEXT; } } // namespace juce