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The open source OpenXR runtime
1// Copyright 2021, Qualcomm Innovation Center, Inc.
2// SPDX-License-Identifier: BSL-1.0
3/*!
4 * @file
5 * @brief Implementation of android looper functions.
6 * @author Jarvis Huang
7 * @ingroup aux_android
8 */
9
10#include "android_looper.h"
11
12#include "util/u_logging.h"
13#include "wrap/android.app.h"
14
15#include <android_native_app_glue.h>
16#include <android/looper.h>
17
18void
19android_looper_poll_until_activity_resumed(struct _JavaVM *vm, void *activity)
20{
21 jni::init(vm);
22 wrap::android::app::Activity activityObject{(jobject)activity};
23 if (!jni::env()->IsInstanceOf(activityObject.object().getHandle(),
24 jni::Class("android/app/NativeActivity").getHandle())) {
25 // skip if given activity is not android.app.NativeActivity
26 U_LOG_I("Activity is not NativeActivity, skip");
27 return;
28 }
29
30 // Activity is in resumed state if window is active. Check Activity#onPostResume for detail.
31 if (!activityObject.getWindow().isNull() && activityObject.getWindow().call<bool>("isActive()Z")) {
32 // Already in resume state, skip
33 U_LOG_I("Activity is NativeActivity and already in resume state with window available, skip");
34 return;
35 }
36
37 struct android_poll_source *source;
38 while (ALooper_pollOnce(1000, NULL, NULL, (void **)&source) >= 0) {
39 if (source) {
40 // Let callback owner handle the event
41 source->process(source->app, source);
42 if (source->app->destroyRequested != 0)
43 break;
44 if (source->app->activityState == APP_CMD_RESUME && source->app->window) {
45 U_LOG_I("Activity is in resume state with window available now");
46 break;
47 }
48 }
49 }
50}