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godotengine
GitHub Repository: godotengine/godot
 Path: blob/master/thirdparty/openxr/src/loader/loader_init_data.cpp
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// Copyright (c) 2017-2025 The Khronos Group Inc.

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// Copyright (c) 2017-2019 Valve Corporation

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// Copyright (c) 2017-2019 LunarG, Inc.

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//

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// SPDX-License-Identifier: Apache-2.0 OR MIT

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//

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// Initial Author: Mark Young <[email protected]>

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//

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#include "loader_init_data.hpp"

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#ifdef XR_KHR_LOADER_INIT_SUPPORT

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// Check and copy the Android-specific init data.

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XrResult LoaderInitData::initialize(const XrLoaderInitInfoBaseHeaderKHR* info) {

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#if defined(XR_USE_PLATFORM_ANDROID)

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    if (info->type != XR_TYPE_LOADER_INIT_INFO_ANDROID_KHR) {

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        return XR_ERROR_VALIDATION_FAILURE;

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    }

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    auto cast_info = reinterpret_cast<XrLoaderInitInfoAndroidKHR const*>(info);

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    if (cast_info->applicationVM == nullptr) {

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        return XR_ERROR_VALIDATION_FAILURE;

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    }

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    if (cast_info->applicationContext == nullptr) {

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        return XR_ERROR_VALIDATION_FAILURE;

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    }

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    // Copy and store the JVM pointer and Android Context, ensuring the JVM is initialised.

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    _data = *cast_info;

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    _data.next = nullptr;

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    jni::init(static_cast<jni::JavaVM*>(_data.applicationVM));

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    const jni::Object context = jni::Object{static_cast<jni::jobject>(_data.applicationContext)};

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    // Retrieve a reference to the Android AssetManager.

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    const auto assetManager = context.call<jni::Object>("getAssets()Landroid/content/res/AssetManager;");

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    _android_asset_manager = AAssetManager_fromJava(jni::env(), assetManager.getHandle());

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    // Retrieve the path to the native libraries.

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    const auto applicationContext = context.call<jni::Object>("getApplicationContext()Landroid/content/Context;");

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    const auto applicationInfo = context.call<jni::Object>("getApplicationInfo()Landroid/content/pm/ApplicationInfo;");

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    _native_library_path = applicationInfo.get<std::string>("nativeLibraryDir");

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#else

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#error "Platform specific XR_KHR_loader_init structure is not defined for this platform."

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#endif  // XR_USE_PLATFORM_ANDROID

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    _initialized = true;

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    return XR_SUCCESS;

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}

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XrResult InitializeLoaderInitData(const XrLoaderInitInfoBaseHeaderKHR* loaderInitInfo) {

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    return LoaderInitData::instance().initialize(loaderInitInfo);

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}

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#ifdef XR_USE_PLATFORM_ANDROID

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std::string GetAndroidNativeLibraryDir() { return LoaderInitData::instance()._native_library_path; }

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void* Android_Get_Asset_Manager() { return LoaderInitData::instance()._android_asset_manager; }

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#endif  // XR_USE_PLATFORM_ANDROID

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#endif  // XR_KHR_LOADER_INIT_SUPPORT

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