62 lines
2.6 KiB
C++
62 lines
2.6 KiB
C++
/**
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******************************************************************************
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* Xenia : Xbox 360 Emulator Research Project *
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******************************************************************************
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* Copyright 2022 Ben Vanik. All rights reserved. *
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* Released under the BSD license - see LICENSE in the root for more details. *
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******************************************************************************
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*/
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#ifndef XENIA_BASE_MAIN_ANDROID_H_
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#define XENIA_BASE_MAIN_ANDROID_H_
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#include <jni.h>
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#include <cstdint>
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#include "xenia/base/platform.h"
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namespace xe {
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// In activities, these functions must be called in onCreate and onDestroy.
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//
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// Multiple components may run in the same process, and they will be
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// instantiated in the main thread, which is, for regular applications (the
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// system application exception doesn't apply to Xenia), the UI thread.
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//
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// For this reason, it's okay to call these functions multiple times if
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// different Xenia windowed applications run in one process - there is call
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// counting internally.
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//
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// In standalone console apps built with $(BUILD_EXECUTABLE), these functions
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// must be called in `main`, with a null main thread JNI environment.
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void InitializeAndroidAppFromMainThread(int32_t api_level,
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JNIEnv* main_thread_jni_env,
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jobject application_context,
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jobject launch_arguments_bundle);
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void ShutdownAndroidAppFromMainThread();
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// May be the minimum supported level if the initialization was done without a
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// configuration.
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int32_t GetAndroidApiLevel();
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// Useful notes about JNI usage on Android within Xenia:
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// - All static libraries defining JNI native functions must be linked to shared
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// libraries via LOCAL_WHOLE_STATIC_LIBRARIES.
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// - If method or field IDs are cached, a global reference to the class needs to
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// be held - it prevents the class from being unloaded by the class loaders
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// (in a way that would make the IDs invalid when it's reloaded).
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// - GetStringUTFChars (UTF-8) returns null-terminated strings, GetStringChars
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// (UTF-16) does not.
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// May return null if not in a Java VM process, or in case of a failure to
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// attach on a non-main thread.
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JNIEnv* GetAndroidThreadJniEnv();
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// Returns the global reference if in an application context, or null otherwise.
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// This is the application context, not the activity one, because multiple
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// activities may be running in one process.
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jobject GetAndroidApplicationContext();
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} // namespace xe
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#endif // XENIA_BASE_MAIN_ANDROID_H_
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