targets: Add service-lib stub for Android

src/xrt/targets/CMakeLists.txt

@@ -19,6 +19,13 @@ if(XRT_HAVE_SDL2)
 endif()
 
 if(XRT_FEATURE_SERVICE)
-        add_subdirectory(ctl)
-	add_subdirectory(service)
+	add_subdirectory(ctl)
+endif()
+
+if(XRT_FEATURE_SERVICE AND XRT_FEATURE_OPENXR)
+	if(ANDROID)
+		add_subdirectory(service-lib)
+	else()
+		add_subdirectory(service)
+	endif()
 endif()

src/xrt/targets/service-lib/CMakeLists.txt

@@ -0,0 +1,22 @@
+# Copyright 2020, Collabora, Ltd.
+# SPDX-License-Identifier: BSL-1.0
+
+
+add_library(monado-service MODULE
+	lib.cpp
+	)
+
+target_link_libraries(monado-service PRIVATE
+	aux_util
+	st_prober
+	ipc_server
+	comp_main
+	target_lists
+	target_instance
+	xrt-external-jni-wrap
+	)
+
+set_target_properties(monado-service
+	PROPERTIES
+	CXX_STANDARD 17
+	CXX_STANDARD_REQUIRED ON)

src/xrt/targets/service-lib/lib.cpp

@@ -0,0 +1,48 @@
+// Copyright 2020, Collabora, Ltd.
+// SPDX-License-Identifier: BSL-1.0
+/*!
+ * @file
+ * @brief  Library exposing IPC server.
+ * @author Ryan Pavlik <ryan.pavlik@collabora.com>
+ * @ingroup ipc_android
+ */
+
+#include "target_lists.h"
+
+#include "jnipp.h"
+#include "jni.h"
+
+#include "wrap/android.os.h"
+#include "wrap/android.view.h"
+
+#include <android/native_window.h>
+#include <android/native_window_jni.h>
+
+using wrap::android::os::ParcelFileDescriptor;
+using wrap::android::view::Surface;
+
+extern "C" void
+Java_org_freedesktop_monado_ipc_MonadoImpl_nativeAddClient(
+    JNIEnv *env, jobject thiz, jobject parcel_file_descriptor)
+{
+	jni::init(env);
+	//! @todo do something!
+	// This may be the "entry point" of the native code, or we could already
+	// have another client running, etc.
+
+	ParcelFileDescriptor pfd(parcel_file_descriptor);
+	jni::Object monadoImpl(thiz);
+}
+
+extern "C" void
+Java_org_freedesktop_monado_ipc_MonadoImpl_nativeAppSurface(JNIEnv *env,
+                                                            jobject thiz,
+                                                            jobject surface)
+{
+	jni::init(env);
+	Surface surf(surface);
+	jni::Object monadoImpl(thiz);
+	ANativeWindow *nativeWindow = ANativeWindow_fromSurface(env, surface);
+
+	//! @todo do something!
+}