summaryrefslogtreecommitdiff
path: root/sal/android/android_native_app_glue.c
blob: efd7a4b8c38e702387eb23c74844c203f205a0c3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
/*
 * Copyright (C) 2010 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

#include <jni.h>

#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <sys/resource.h>

#include "osl/detail/android.h"
#include <android/log.h>

#define LOGI(...) ((void)__android_log_print(ANDROID_LOG_INFO, "threaded_app", __VA_ARGS__))

static void free_saved_state(struct android_app* android_app) {
    pthread_mutex_lock(&android_app->mutex);
    if (android_app->savedState != NULL) {
        free(android_app->savedState);
        android_app->savedState = NULL;
        android_app->savedStateSize = 0;
    }
    pthread_mutex_unlock(&android_app->mutex);
}

int8_t android_app_read_cmd(struct android_app* android_app) {
    int8_t cmd;
    if (read(android_app->msgread, &cmd, sizeof(cmd)) == sizeof(cmd)) {
        switch (cmd) {
            case APP_CMD_SAVE_STATE:
                free_saved_state(android_app);
                break;
        }
        return cmd;
    } else {
        LOGI("No data on command pipe!");
    }
    return -1;
}

static void print_cur_config(struct android_app* android_app) {
    char lang[2], country[2];
    AConfiguration_getLanguage(android_app->config, lang);
    AConfiguration_getCountry(android_app->config, country);

    LOGI("Config: mcc=%d mnc=%d lang=%c%c cnt=%c%c orien=%d touch=%d dens=%d "
            "keys=%d nav=%d keysHid=%d navHid=%d sdk=%d size=%d long=%d "
            "modetype=%d modenight=%d",
            AConfiguration_getMcc(android_app->config),
            AConfiguration_getMnc(android_app->config),
            lang[0], lang[1], country[0], country[1],
            AConfiguration_getOrientation(android_app->config),
            AConfiguration_getTouchscreen(android_app->config),
            AConfiguration_getDensity(android_app->config),
            AConfiguration_getKeyboard(android_app->config),
            AConfiguration_getNavigation(android_app->config),
            AConfiguration_getKeysHidden(android_app->config),
            AConfiguration_getNavHidden(android_app->config),
            AConfiguration_getSdkVersion(android_app->config),
            AConfiguration_getScreenSize(android_app->config),
            AConfiguration_getScreenLong(android_app->config),
            AConfiguration_getUiModeType(android_app->config),
            AConfiguration_getUiModeNight(android_app->config));
}

void android_app_pre_exec_cmd(struct android_app* android_app, int8_t cmd) {
    switch (cmd) {
        case APP_CMD_INPUT_CHANGED:
            LOGI("APP_CMD_INPUT_CHANGED\n");
            pthread_mutex_lock(&android_app->mutex);
            if (android_app->inputQueue != NULL) {
                AInputQueue_detachLooper(android_app->inputQueue);
            }
            android_app->inputQueue = android_app->pendingInputQueue;
            if (android_app->inputQueue != NULL) {
                LOGI("Attaching input queue to looper");
                AInputQueue_attachLooper(android_app->inputQueue,
                        android_app->looper, LOOPER_ID_INPUT, NULL,
                        &android_app->inputPollSource);
            }
            pthread_cond_broadcast(&android_app->cond);
            pthread_mutex_unlock(&android_app->mutex);
            break;

        case APP_CMD_INIT_WINDOW:
            LOGI("APP_CMD_INIT_WINDOW\n");
            pthread_mutex_lock(&android_app->mutex);
            android_app->window = android_app->pendingWindow;
            pthread_cond_broadcast(&android_app->cond);
            pthread_mutex_unlock(&android_app->mutex);
            break;

        case APP_CMD_TERM_WINDOW:
            LOGI("APP_CMD_TERM_WINDOW\n");
            pthread_cond_broadcast(&android_app->cond);
            break;

        case APP_CMD_RESUME:
        case APP_CMD_START:
        case APP_CMD_PAUSE:
        case APP_CMD_STOP:
            LOGI("activityState=%d\n", cmd);
            pthread_mutex_lock(&android_app->mutex);
            android_app->activityState = cmd;
            pthread_cond_broadcast(&android_app->cond);
            pthread_mutex_unlock(&android_app->mutex);
            break;

        case APP_CMD_CONFIG_CHANGED:
            LOGI("APP_CMD_CONFIG_CHANGED\n");
            AConfiguration_fromAssetManager(android_app->config,
                    android_app->activity->assetManager);
            print_cur_config(android_app);
            break;

        case APP_CMD_DESTROY:
            LOGI("APP_CMD_DESTROY\n");
            android_app->destroyRequested = 1;
            break;
    }
}

void android_app_post_exec_cmd(struct android_app* android_app, int8_t cmd) {
    switch (cmd) {
        case APP_CMD_TERM_WINDOW:
            LOGI("APP_CMD_TERM_WINDOW\n");
            pthread_mutex_lock(&android_app->mutex);
            android_app->window = NULL;
            pthread_cond_broadcast(&android_app->cond);
            pthread_mutex_unlock(&android_app->mutex);
            break;

        case APP_CMD_SAVE_STATE:
            LOGI("APP_CMD_SAVE_STATE\n");
            pthread_mutex_lock(&android_app->mutex);
            android_app->stateSaved = 1;
            pthread_cond_broadcast(&android_app->cond);
            pthread_mutex_unlock(&android_app->mutex);
            break;

        case APP_CMD_RESUME:
            free_saved_state(android_app);
            break;
    }
}

void app_dummy() {

}

static void android_app_destroy(struct android_app* android_app) {
    LOGI("android_app_destroy!");
    free_saved_state(android_app);
    pthread_mutex_lock(&android_app->mutex);
    if (android_app->inputQueue != NULL) {
        AInputQueue_detachLooper(android_app->inputQueue);
    }
    AConfiguration_delete(android_app->config);
    android_app->destroyed = 1;
    pthread_cond_broadcast(&android_app->cond);
    pthread_mutex_unlock(&android_app->mutex);
    // Can't touch android_app object after this.
}

static void process_input(struct android_app* app, struct android_poll_source* source) {
    AInputEvent* event = NULL;
    (void) source;
    if (AInputQueue_getEvent(app->inputQueue, &event) >= 0) {
        LOGI("New input event: type=%d\n", AInputEvent_getType(event));
        if (AInputQueue_preDispatchEvent(app->inputQueue, event)) {
            return;
        }
        int32_t handled = 0;
        if (app->onInputEvent != NULL) handled = app->onInputEvent(app, event);
        AInputQueue_finishEvent(app->inputQueue, event, handled);
    } else {
        LOGI("Failure reading next input event: %s\n", strerror(errno));
    }
}

static void process_cmd(struct android_app* app, struct android_poll_source* source) {
    int8_t cmd = android_app_read_cmd(app);
    (void) source;
    android_app_pre_exec_cmd(app, cmd);
    if (app->onAppCmd != NULL) app->onAppCmd(app, cmd);
    android_app_post_exec_cmd(app, cmd);
}

static void* android_app_entry(void* param) {
    struct android_app* android_app = (struct android_app*)param;

    android_app->config = AConfiguration_new();
    AConfiguration_fromAssetManager(android_app->config, android_app->activity->assetManager);

    print_cur_config(android_app);

    android_app->cmdPollSource.id = LOOPER_ID_MAIN;
    android_app->cmdPollSource.app = android_app;
    android_app->cmdPollSource.process = process_cmd;
    android_app->inputPollSource.id = LOOPER_ID_INPUT;
    android_app->inputPollSource.app = android_app;
    android_app->inputPollSource.process = process_input;

    ALooper* looper = ALooper_prepare(ALOOPER_PREPARE_ALLOW_NON_CALLBACKS);
    ALooper_addFd(looper, android_app->msgread, LOOPER_ID_MAIN, ALOOPER_EVENT_INPUT, NULL,
            &android_app->cmdPollSource);
    android_app->looper = looper;

    pthread_mutex_lock(&android_app->mutex);
    android_app->running = 1;
    pthread_cond_broadcast(&android_app->cond);
    pthread_mutex_unlock(&android_app->mutex);

    android_main(android_app);

    android_app_destroy(android_app);
    return NULL;
}

// --------------------------------------------------------------------
// Native activity interaction (called from main thread)
// --------------------------------------------------------------------

static struct android_app* android_app_create(ANativeActivity* activity,
        void* savedState, size_t savedStateSize)
{
    struct android_app* android_app = (struct android_app*)malloc(sizeof(struct android_app));
    memset(android_app, 0, sizeof(struct android_app));

    // get this across to VCL.
    global_android_app = android_app;

    android_app->activity = activity;

    pthread_mutex_init(&android_app->mutex, NULL);
    pthread_cond_init(&android_app->cond, NULL);

    if (savedState != NULL) {
        android_app->savedState = malloc(savedStateSize);
        android_app->savedStateSize = savedStateSize;
        memcpy(android_app->savedState, savedState, savedStateSize);
    }

    int msgpipe[2];
    if (pipe(msgpipe)) {
        LOGI("could not create pipe: %s", strerror(errno));
    }
    android_app->msgread = msgpipe[0];
    android_app->msgwrite = msgpipe[1];

    pthread_attr_t attr;
    pthread_attr_init(&attr);
    pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
    pthread_create(&android_app->thread, &attr, android_app_entry, android_app);

    // Wait for thread to start.
    pthread_mutex_lock(&android_app->mutex);
    while (!android_app->running) {
        pthread_cond_wait(&android_app->cond, &android_app->mutex);
    }
    pthread_mutex_unlock(&android_app->mutex);

    return android_app;
}

static void android_app_write_cmd(struct android_app* android_app, int8_t cmd) {
    if (write(android_app->msgwrite, &cmd, sizeof(cmd)) != sizeof(cmd)) {
        LOGI("Failure writing android_app cmd: %s\n", strerror(errno));
    }
}

static void android_app_set_input(struct android_app* android_app, AInputQueue* inputQueue) {
    pthread_mutex_lock(&android_app->mutex);
    android_app->pendingInputQueue = inputQueue;
    android_app_write_cmd(android_app, APP_CMD_INPUT_CHANGED);
    while (android_app->inputQueue != android_app->pendingInputQueue) {
        pthread_cond_wait(&android_app->cond, &android_app->mutex);
    }
    pthread_mutex_unlock(&android_app->mutex);
}

static void android_app_set_window(struct android_app* android_app, ANativeWindow* window) {
    pthread_mutex_lock(&android_app->mutex);
    if (android_app->pendingWindow != NULL) {
        android_app_write_cmd(android_app, APP_CMD_TERM_WINDOW);
    }
    android_app->pendingWindow = window;
    if (window != NULL) {
        android_app_write_cmd(android_app, APP_CMD_INIT_WINDOW);
    }
    while (android_app->window != android_app->pendingWindow) {
        pthread_cond_wait(&android_app->cond, &android_app->mutex);
    }
    pthread_mutex_unlock(&android_app->mutex);
}

static void android_app_set_activity_state(struct android_app* android_app, int8_t cmd) {
    pthread_mutex_lock(&android_app->mutex);
    android_app_write_cmd(android_app, cmd);
    while (android_app->activityState != cmd) {
        pthread_cond_wait(&android_app->cond, &android_app->mutex);
    }
    pthread_mutex_unlock(&android_app->mutex);
}

static void android_app_free(struct android_app* android_app) {
    pthread_mutex_lock(&android_app->mutex);
    android_app_write_cmd(android_app, APP_CMD_DESTROY);
    while (!android_app->destroyed) {
        pthread_cond_wait(&android_app->cond, &android_app->mutex);
    }
    pthread_mutex_unlock(&android_app->mutex);

    close(android_app->msgread);
    close(android_app->msgwrite);
    pthread_cond_destroy(&android_app->cond);
    pthread_mutex_destroy(&android_app->mutex);
    free(android_app);
}

static void onDestroy(ANativeActivity* activity) {
    LOGI("Destroy: %p\n", activity);
    android_app_free((struct android_app*)activity->instance);
}

static void onStart(ANativeActivity* activity) {
    LOGI("Start: %p\n", activity);
    android_app_set_activity_state((struct android_app*)activity->instance, APP_CMD_START);
}

static void onResume(ANativeActivity* activity) {
    LOGI("Resume: %p\n", activity);
    android_app_set_activity_state((struct android_app*)activity->instance, APP_CMD_RESUME);
}

static void* onSaveInstanceState(ANativeActivity* activity, size_t* outLen) {
    struct android_app* android_app = (struct android_app*)activity->instance;
    void* savedState = NULL;

    LOGI("SaveInstanceState: %p\n", activity);
    pthread_mutex_lock(&android_app->mutex);
    android_app->stateSaved = 0;
    android_app_write_cmd(android_app, APP_CMD_SAVE_STATE);
    while (!android_app->stateSaved) {
        pthread_cond_wait(&android_app->cond, &android_app->mutex);
    }

    if (android_app->savedState != NULL) {
        savedState = android_app->savedState;
        *outLen = android_app->savedStateSize;
        android_app->savedState = NULL;
        android_app->savedStateSize = 0;
    }

    pthread_mutex_unlock(&android_app->mutex);

    return savedState;
}

static void onPause(ANativeActivity* activity) {
    LOGI("Pause: %p\n", activity);
    android_app_set_activity_state((struct android_app*)activity->instance, APP_CMD_PAUSE);
}

static void onStop(ANativeActivity* activity) {
    LOGI("Stop: %p\n", activity);
    android_app_set_activity_state((struct android_app*)activity->instance, APP_CMD_STOP);
}

static void onConfigurationChanged(ANativeActivity* activity) {
    struct android_app* android_app = (struct android_app*)activity->instance;
    LOGI("ConfigurationChanged: %p\n", activity);
    android_app_write_cmd(android_app, APP_CMD_CONFIG_CHANGED);
}

static void onLowMemory(ANativeActivity* activity) {
    struct android_app* android_app = (struct android_app*)activity->instance;
    LOGI("LowMemory: %p\n", activity);
    android_app_write_cmd(android_app, APP_CMD_LOW_MEMORY);
}

static void onWindowFocusChanged(ANativeActivity* activity, int focused) {
    LOGI("WindowFocusChanged: %p -- %d\n", activity, focused);
    android_app_write_cmd((struct android_app*)activity->instance,
            focused ? APP_CMD_GAINED_FOCUS : APP_CMD_LOST_FOCUS);
}

static void onNativeWindowCreated(ANativeActivity* activity, ANativeWindow* window) {
    LOGI("NativeWindowCreated: %p -- %p\n", activity, window);
    android_app_set_window((struct android_app*)activity->instance, window);
}

static void onNativeWindowDestroyed(ANativeActivity* activity, ANativeWindow* window) {
    LOGI("NativeWindowDestroyed: %p -- %p\n", activity, window);
    android_app_set_window((struct android_app*)activity->instance, NULL);
}

static void onInputQueueCreated(ANativeActivity* activity, AInputQueue* queue) {
    LOGI("InputQueueCreated: %p -- %p\n", activity, queue);
    android_app_set_input((struct android_app*)activity->instance, queue);
}

static void onInputQueueDestroyed(ANativeActivity* activity, AInputQueue* queue) {
    LOGI("InputQueueDestroyed: %p -- %p\n", activity, queue);
    android_app_set_input((struct android_app*)activity->instance, NULL);
}

__attribute__ ((visibility("default"))) struct android_app *global_android_app = NULL;

__attribute__ ((visibility("default"))) void ANativeActivity_onCreate(ANativeActivity* activity,
        void* savedState, size_t savedStateSize)
{
    LOGI("Creating: %p\n", activity);

    activity->callbacks->onDestroy = onDestroy;
    activity->callbacks->onStart = onStart;
    activity->callbacks->onResume = onResume;
    activity->callbacks->onSaveInstanceState = onSaveInstanceState;
    activity->callbacks->onPause = onPause;
    activity->callbacks->onStop = onStop;
    activity->callbacks->onConfigurationChanged = onConfigurationChanged;
    activity->callbacks->onLowMemory = onLowMemory;
    activity->callbacks->onWindowFocusChanged = onWindowFocusChanged;
    activity->callbacks->onNativeWindowCreated = onNativeWindowCreated;
    activity->callbacks->onNativeWindowDestroyed = onNativeWindowDestroyed;
    activity->callbacks->onInputQueueCreated = onInputQueueCreated;
    activity->callbacks->onInputQueueDestroyed = onInputQueueDestroyed;

    activity->instance = android_app_create(activity, savedState, savedStateSize);
}