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
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
|
/*
Simple DirectMedia Layer
Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#include "SDL_stdinc.h"
#include "SDL_assert.h"
#include "SDL_log.h"
#ifdef __ANDROID__
#include "SDL_system.h"
#include "SDL_android.h"
#include <EGL/egl.h>
#include "../../events/SDL_events_c.h"
#include "../../video/android/SDL_androidkeyboard.h"
#include "../../video/android/SDL_androidtouch.h"
#include "../../video/android/SDL_androidvideo.h"
#include "../../video/android/SDL_androidwindow.h"
#include "../../joystick/android/SDL_sysjoystick_c.h"
#include <android/log.h>
#include <pthread.h>
#include <sys/types.h>
#include <unistd.h>
#define LOG_TAG "SDL_android"
/* #define LOGI(...) __android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__) */
/* #define LOGE(...) __android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__) */
#define LOGI(...) do {} while (false)
#define LOGE(...) do {} while (false)
/* Uncomment this to log messages entering and exiting methods in this file */
/* #define DEBUG_JNI */
static void Android_JNI_ThreadDestroyed(void*);
/*******************************************************************************
This file links the Java side of Android with libsdl
*******************************************************************************/
#include <jni.h>
#include <android/log.h>
#include <stdbool.h>
/*******************************************************************************
Globals
*******************************************************************************/
static pthread_key_t mThreadKey;
static JavaVM* mJavaVM;
/* Main activity */
static jclass mActivityClass;
/* method signatures */
static jmethodID midGetNativeSurface;
static jmethodID midFlipBuffers;
static jmethodID midAudioInit;
static jmethodID midAudioWriteShortBuffer;
static jmethodID midAudioWriteByteBuffer;
static jmethodID midAudioQuit;
static jmethodID midPollInputDevices;
/* Accelerometer data storage */
static float fLastAccelerometer[3];
static bool bHasNewData;
/*******************************************************************************
Functions called by JNI
*******************************************************************************/
/* Library init */
jint JNI_OnLoad(JavaVM* vm, void* reserved)
{
JNIEnv *env;
mJavaVM = vm;
LOGI("JNI_OnLoad called");
if ((*mJavaVM)->GetEnv(mJavaVM, (void**) &env, JNI_VERSION_1_4) != JNI_OK) {
LOGE("Failed to get the environment using GetEnv()");
return -1;
}
/*
* Create mThreadKey so we can keep track of the JNIEnv assigned to each thread
* Refer to http://developer.android.com/guide/practices/design/jni.html for the rationale behind this
*/
if (pthread_key_create(&mThreadKey, Android_JNI_ThreadDestroyed) != 0) {
__android_log_print(ANDROID_LOG_ERROR, "SDL", "Error initializing pthread key");
}
Android_JNI_SetupThread();
return JNI_VERSION_1_4;
}
/* Called before SDL_main() to initialize JNI bindings */
void SDL_Android_Init(JNIEnv* mEnv, jclass cls)
{
__android_log_print(ANDROID_LOG_INFO, "SDL", "SDL_Android_Init()");
Android_JNI_SetupThread();
mActivityClass = (jclass)((*mEnv)->NewGlobalRef(mEnv, cls));
midGetNativeSurface = (*mEnv)->GetStaticMethodID(mEnv, mActivityClass,
"getNativeSurface","()Landroid/view/Surface;");
midFlipBuffers = (*mEnv)->GetStaticMethodID(mEnv, mActivityClass,
"flipBuffers","()V");
midAudioInit = (*mEnv)->GetStaticMethodID(mEnv, mActivityClass,
"audioInit", "(IZZI)I");
midAudioWriteShortBuffer = (*mEnv)->GetStaticMethodID(mEnv, mActivityClass,
"audioWriteShortBuffer", "([S)V");
midAudioWriteByteBuffer = (*mEnv)->GetStaticMethodID(mEnv, mActivityClass,
"audioWriteByteBuffer", "([B)V");
midAudioQuit = (*mEnv)->GetStaticMethodID(mEnv, mActivityClass,
"audioQuit", "()V");
midPollInputDevices = (*mEnv)->GetStaticMethodID(mEnv, mActivityClass,
"pollInputDevices", "()V");
bHasNewData = false;
if(!midGetNativeSurface || !midFlipBuffers || !midAudioInit ||
!midAudioWriteShortBuffer || !midAudioWriteByteBuffer || !midAudioQuit || !midPollInputDevices) {
__android_log_print(ANDROID_LOG_WARN, "SDL", "SDL: Couldn't locate Java callbacks, check that they're named and typed correctly");
}
__android_log_print(ANDROID_LOG_INFO, "SDL", "SDL_Android_Init() finished!");
}
/* Resize */
void Java_org_libsdl_app_SDLActivity_onNativeResize(
JNIEnv* env, jclass jcls,
jint width, jint height, jint format)
{
Android_SetScreenResolution(width, height, format);
}
// Paddown
int Java_org_libsdl_app_SDLActivity_onNativePadDown(
JNIEnv* env, jclass jcls,
jint device_id, jint keycode)
{
return Android_OnPadDown(device_id, keycode);
}
// Padup
int Java_org_libsdl_app_SDLActivity_onNativePadUp(
JNIEnv* env, jclass jcls,
jint device_id, jint keycode)
{
return Android_OnPadUp(device_id, keycode);
}
/* Joy */
void Java_org_libsdl_app_SDLActivity_onNativeJoy(
JNIEnv* env, jclass jcls,
jint device_id, jint axis, jfloat value)
{
Android_OnJoy(device_id, axis, value);
}
/* POV Hat */
void Java_org_libsdl_app_SDLActivity_onNativeHat(
JNIEnv* env, jclass jcls,
jint device_id, jint hat_id, jint x, jint y)
{
Android_OnHat(device_id, hat_id, x, y);
}
int Java_org_libsdl_app_SDLActivity_nativeAddJoystick(
JNIEnv* env, jclass jcls,
jint device_id, jstring device_name, jint is_accelerometer,
jint nbuttons, jint naxes, jint nhats, jint nballs)
{
int retval;
const char *name = (*env)->GetStringUTFChars(env, device_name, NULL);
retval = Android_AddJoystick(device_id, name, (SDL_bool) is_accelerometer, nbuttons, naxes, nhats, nballs);
(*env)->ReleaseStringUTFChars(env, device_name, name);
return retval;
}
int Java_org_libsdl_app_SDLActivity_nativeRemoveJoystick(
JNIEnv* env, jclass jcls, jint device_id)
{
return Android_RemoveJoystick(device_id);
}
/* Surface Created */
void Java_org_libsdl_app_SDLActivity_onNativeSurfaceChanged(JNIEnv* env, jclass jcls)
{
SDL_WindowData *data;
SDL_VideoDevice *_this;
if (Android_Window == NULL || Android_Window->driverdata == NULL ) {
return;
}
_this = SDL_GetVideoDevice();
data = (SDL_WindowData *) Android_Window->driverdata;
/* If the surface has been previously destroyed by onNativeSurfaceDestroyed, recreate it here */
if (data->egl_surface == EGL_NO_SURFACE) {
if(data->native_window) {
ANativeWindow_release(data->native_window);
}
data->native_window = Android_JNI_GetNativeWindow();
data->egl_surface = SDL_EGL_CreateSurface(_this, (NativeWindowType) data->native_window);
}
/* GL Context handling is done in the event loop because this function is run from the Java thread */
}
/* Surface Destroyed */
void Java_org_libsdl_app_SDLActivity_onNativeSurfaceDestroyed(JNIEnv* env, jclass jcls)
{
/* We have to clear the current context and destroy the egl surface here
* Otherwise there's BAD_NATIVE_WINDOW errors coming from eglCreateWindowSurface on resume
* Ref: http://stackoverflow.com/questions/8762589/eglcreatewindowsurface-on-ics-and-switching-from-2d-to-3d
*/
SDL_WindowData *data;
SDL_VideoDevice *_this;
if (Android_Window == NULL || Android_Window->driverdata == NULL ) {
return;
}
_this = SDL_GetVideoDevice();
data = (SDL_WindowData *) Android_Window->driverdata;
if (data->egl_surface != EGL_NO_SURFACE) {
SDL_EGL_MakeCurrent(_this, NULL, NULL);
SDL_EGL_DestroySurface(_this, data->egl_surface);
data->egl_surface = EGL_NO_SURFACE;
}
/* GL Context handling is done in the event loop because this function is run from the Java thread */
}
void Java_org_libsdl_app_SDLActivity_nativeFlipBuffers(JNIEnv* env, jclass jcls)
{
SDL_GL_SwapWindow(Android_Window);
}
/* Keydown */
void Java_org_libsdl_app_SDLActivity_onNativeKeyDown(
JNIEnv* env, jclass jcls, jint keycode)
{
Android_OnKeyDown(keycode);
}
/* Keyup */
void Java_org_libsdl_app_SDLActivity_onNativeKeyUp(
JNIEnv* env, jclass jcls, jint keycode)
{
Android_OnKeyUp(keycode);
}
/* Keyboard Focus Lost */
void Java_org_libsdl_app_SDLActivity_onNativeKeyboardFocusLost(
JNIEnv* env, jclass jcls)
{
/* Calling SDL_StopTextInput will take care of hiding the keyboard and cleaning up the DummyText widget */
SDL_StopTextInput();
}
/* Touch */
void Java_org_libsdl_app_SDLActivity_onNativeTouch(
JNIEnv* env, jclass jcls,
jint touch_device_id_in, jint pointer_finger_id_in,
jint action, jfloat x, jfloat y, jfloat p)
{
Android_OnTouch(touch_device_id_in, pointer_finger_id_in, action, x, y, p);
}
/* Accelerometer */
void Java_org_libsdl_app_SDLActivity_onNativeAccel(
JNIEnv* env, jclass jcls,
jfloat x, jfloat y, jfloat z)
{
fLastAccelerometer[0] = x;
fLastAccelerometer[1] = y;
fLastAccelerometer[2] = z;
bHasNewData = true;
}
/* Low memory */
void Java_org_libsdl_app_SDLActivity_nativeLowMemory(
JNIEnv* env, jclass cls)
{
SDL_SendAppEvent(SDL_APP_LOWMEMORY);
}
/* Quit */
void Java_org_libsdl_app_SDLActivity_nativeQuit(
JNIEnv* env, jclass cls)
{
/* Discard previous events. The user should have handled state storage
* in SDL_APP_WILLENTERBACKGROUND. After nativeQuit() is called, no
* events other than SDL_QUIT and SDL_APP_TERMINATING should fire */
SDL_FlushEvents(SDL_FIRSTEVENT, SDL_LASTEVENT);
/* Inject a SDL_QUIT event */
SDL_SendQuit();
SDL_SendAppEvent(SDL_APP_TERMINATING);
/* Resume the event loop so that the app can catch SDL_QUIT which
* should now be the top event in the event queue. */
if (!SDL_SemValue(Android_ResumeSem)) SDL_SemPost(Android_ResumeSem);
}
/* Pause */
void Java_org_libsdl_app_SDLActivity_nativePause(
JNIEnv* env, jclass cls)
{
__android_log_print(ANDROID_LOG_VERBOSE, "SDL", "nativePause()");
if (Android_Window) {
SDL_SendWindowEvent(Android_Window, SDL_WINDOWEVENT_FOCUS_LOST, 0, 0);
SDL_SendWindowEvent(Android_Window, SDL_WINDOWEVENT_MINIMIZED, 0, 0);
SDL_SendAppEvent(SDL_APP_WILLENTERBACKGROUND);
SDL_SendAppEvent(SDL_APP_DIDENTERBACKGROUND);
/* *After* sending the relevant events, signal the pause semaphore
* so the event loop knows to pause and (optionally) block itself */
if (!SDL_SemValue(Android_PauseSem)) SDL_SemPost(Android_PauseSem);
}
}
/* Resume */
void Java_org_libsdl_app_SDLActivity_nativeResume(
JNIEnv* env, jclass cls)
{
__android_log_print(ANDROID_LOG_VERBOSE, "SDL", "nativeResume()");
if (Android_Window) {
SDL_SendAppEvent(SDL_APP_WILLENTERFOREGROUND);
SDL_SendAppEvent(SDL_APP_DIDENTERFOREGROUND);
SDL_SendWindowEvent(Android_Window, SDL_WINDOWEVENT_FOCUS_GAINED, 0, 0);
SDL_SendWindowEvent(Android_Window, SDL_WINDOWEVENT_RESTORED, 0, 0);
/* Signal the resume semaphore so the event loop knows to resume and restore the GL Context
* We can't restore the GL Context here because it needs to be done on the SDL main thread
* and this function will be called from the Java thread instead.
*/
if (!SDL_SemValue(Android_ResumeSem)) SDL_SemPost(Android_ResumeSem);
}
}
void Java_org_libsdl_app_SDLInputConnection_nativeCommitText(
JNIEnv* env, jclass cls,
jstring text, jint newCursorPosition)
{
const char *utftext = (*env)->GetStringUTFChars(env, text, NULL);
SDL_SendKeyboardText(utftext);
(*env)->ReleaseStringUTFChars(env, text, utftext);
}
void Java_org_libsdl_app_SDLInputConnection_nativeSetComposingText(
JNIEnv* env, jclass cls,
jstring text, jint newCursorPosition)
{
const char *utftext = (*env)->GetStringUTFChars(env, text, NULL);
SDL_SendEditingText(utftext, 0, 0);
(*env)->ReleaseStringUTFChars(env, text, utftext);
}
/*******************************************************************************
Functions called by SDL into Java
*******************************************************************************/
static int s_active = 0;
struct LocalReferenceHolder
{
JNIEnv *m_env;
const char *m_func;
};
static struct LocalReferenceHolder LocalReferenceHolder_Setup(const char *func)
{
struct LocalReferenceHolder refholder;
refholder.m_env = NULL;
refholder.m_func = func;
#ifdef DEBUG_JNI
SDL_Log("Entering function %s", func);
#endif
return refholder;
}
static SDL_bool LocalReferenceHolder_Init(struct LocalReferenceHolder *refholder, JNIEnv *env)
{
const int capacity = 16;
if ((*env)->PushLocalFrame(env, capacity) < 0) {
SDL_SetError("Failed to allocate enough JVM local references");
return SDL_FALSE;
}
++s_active;
refholder->m_env = env;
return SDL_TRUE;
}
static void LocalReferenceHolder_Cleanup(struct LocalReferenceHolder *refholder)
{
#ifdef DEBUG_JNI
SDL_Log("Leaving function %s", refholder->m_func);
#endif
if (refholder->m_env) {
JNIEnv* env = refholder->m_env;
(*env)->PopLocalFrame(env, NULL);
--s_active;
}
}
static SDL_bool LocalReferenceHolder_IsActive()
{
return s_active > 0;
}
ANativeWindow* Android_JNI_GetNativeWindow(void)
{
ANativeWindow* anw;
jobject s;
JNIEnv *env = Android_JNI_GetEnv();
s = (*env)->CallStaticObjectMethod(env, mActivityClass, midGetNativeSurface);
anw = ANativeWindow_fromSurface(env, s);
(*env)->DeleteLocalRef(env, s);
return anw;
}
void Android_JNI_SwapWindow()
{
JNIEnv *mEnv = Android_JNI_GetEnv();
(*mEnv)->CallStaticVoidMethod(mEnv, mActivityClass, midFlipBuffers);
}
void Android_JNI_SetActivityTitle(const char *title)
{
jmethodID mid;
JNIEnv *mEnv = Android_JNI_GetEnv();
mid = (*mEnv)->GetStaticMethodID(mEnv, mActivityClass,"setActivityTitle","(Ljava/lang/String;)Z");
if (mid) {
jstring jtitle = (jstring)((*mEnv)->NewStringUTF(mEnv, title));
(*mEnv)->CallStaticBooleanMethod(mEnv, mActivityClass, mid, jtitle);
(*mEnv)->DeleteLocalRef(mEnv, jtitle);
}
}
SDL_bool Android_JNI_GetAccelerometerValues(float values[3])
{
int i;
SDL_bool retval = SDL_FALSE;
if (bHasNewData) {
for (i = 0; i < 3; ++i) {
values[i] = fLastAccelerometer[i];
}
bHasNewData = false;
retval = SDL_TRUE;
}
return retval;
}
static void Android_JNI_ThreadDestroyed(void* value)
{
/* The thread is being destroyed, detach it from the Java VM and set the mThreadKey value to NULL as required */
JNIEnv *env = (JNIEnv*) value;
if (env != NULL) {
(*mJavaVM)->DetachCurrentThread(mJavaVM);
pthread_setspecific(mThreadKey, NULL);
}
}
JNIEnv* Android_JNI_GetEnv(void)
{
/* From http://developer.android.com/guide/practices/jni.html
* All threads are Linux threads, scheduled by the kernel.
* They're usually started from managed code (using Thread.start), but they can also be created elsewhere and then
* attached to the JavaVM. For example, a thread started with pthread_create can be attached with the
* JNI AttachCurrentThread or AttachCurrentThreadAsDaemon functions. Until a thread is attached, it has no JNIEnv,
* and cannot make JNI calls.
* Attaching a natively-created thread causes a java.lang.Thread object to be constructed and added to the "main"
* ThreadGroup, making it visible to the debugger. Calling AttachCurrentThread on an already-attached thread
* is a no-op.
* Note: You can call this function any number of times for the same thread, there's no harm in it
*/
JNIEnv *env;
int status = (*mJavaVM)->AttachCurrentThread(mJavaVM, &env, NULL);
if(status < 0) {
LOGE("failed to attach current thread");
return 0;
}
/* From http://developer.android.com/guide/practices/jni.html
* Threads attached through JNI must call DetachCurrentThread before they exit. If coding this directly is awkward,
* in Android 2.0 (Eclair) and higher you can use pthread_key_create to define a destructor function that will be
* called before the thread exits, and call DetachCurrentThread from there. (Use that key with pthread_setspecific
* to store the JNIEnv in thread-local-storage; that way it'll be passed into your destructor as the argument.)
* Note: The destructor is not called unless the stored value is != NULL
* Note: You can call this function any number of times for the same thread, there's no harm in it
* (except for some lost CPU cycles)
*/
pthread_setspecific(mThreadKey, (void*) env);
return env;
}
int Android_JNI_SetupThread(void)
{
Android_JNI_GetEnv();
return 1;
}
/*
* Audio support
*/
static jboolean audioBuffer16Bit = JNI_FALSE;
static jboolean audioBufferStereo = JNI_FALSE;
static jobject audioBuffer = NULL;
static void* audioBufferPinned = NULL;
int Android_JNI_OpenAudioDevice(int sampleRate, int is16Bit, int channelCount, int desiredBufferFrames)
{
int audioBufferFrames;
JNIEnv *env = Android_JNI_GetEnv();
if (!env) {
LOGE("callback_handler: failed to attach current thread");
}
Android_JNI_SetupThread();
__android_log_print(ANDROID_LOG_VERBOSE, "SDL", "SDL audio: opening device");
audioBuffer16Bit = is16Bit;
audioBufferStereo = channelCount > 1;
if ((*env)->CallStaticIntMethod(env, mActivityClass, midAudioInit, sampleRate, audioBuffer16Bit, audioBufferStereo, desiredBufferFrames) != 0) {
/* Error during audio initialization */
__android_log_print(ANDROID_LOG_WARN, "SDL", "SDL audio: error on AudioTrack initialization!");
return 0;
}
/* Allocating the audio buffer from the Java side and passing it as the return value for audioInit no longer works on
* Android >= 4.2 due to a "stale global reference" error. So now we allocate this buffer directly from this side. */
if (is16Bit) {
jshortArray audioBufferLocal = (*env)->NewShortArray(env, desiredBufferFrames * (audioBufferStereo ? 2 : 1));
if (audioBufferLocal) {
audioBuffer = (*env)->NewGlobalRef(env, audioBufferLocal);
(*env)->DeleteLocalRef(env, audioBufferLocal);
}
}
else {
jbyteArray audioBufferLocal = (*env)->NewByteArray(env, desiredBufferFrames * (audioBufferStereo ? 2 : 1));
if (audioBufferLocal) {
audioBuffer = (*env)->NewGlobalRef(env, audioBufferLocal);
(*env)->DeleteLocalRef(env, audioBufferLocal);
}
}
if (audioBuffer == NULL) {
__android_log_print(ANDROID_LOG_WARN, "SDL", "SDL audio: could not allocate an audio buffer!");
return 0;
}
jboolean isCopy = JNI_FALSE;
if (audioBuffer16Bit) {
audioBufferPinned = (*env)->GetShortArrayElements(env, (jshortArray)audioBuffer, &isCopy);
audioBufferFrames = (*env)->GetArrayLength(env, (jshortArray)audioBuffer);
} else {
audioBufferPinned = (*env)->GetByteArrayElements(env, (jbyteArray)audioBuffer, &isCopy);
audioBufferFrames = (*env)->GetArrayLength(env, (jbyteArray)audioBuffer);
}
if (audioBufferStereo) {
audioBufferFrames /= 2;
}
return audioBufferFrames;
}
void * Android_JNI_GetAudioBuffer()
{
return audioBufferPinned;
}
void Android_JNI_WriteAudioBuffer()
{
JNIEnv *mAudioEnv = Android_JNI_GetEnv();
if (audioBuffer16Bit) {
(*mAudioEnv)->ReleaseShortArrayElements(mAudioEnv, (jshortArray)audioBuffer, (jshort *)audioBufferPinned, JNI_COMMIT);
(*mAudioEnv)->CallStaticVoidMethod(mAudioEnv, mActivityClass, midAudioWriteShortBuffer, (jshortArray)audioBuffer);
} else {
(*mAudioEnv)->ReleaseByteArrayElements(mAudioEnv, (jbyteArray)audioBuffer, (jbyte *)audioBufferPinned, JNI_COMMIT);
(*mAudioEnv)->CallStaticVoidMethod(mAudioEnv, mActivityClass, midAudioWriteByteBuffer, (jbyteArray)audioBuffer);
}
/* JNI_COMMIT means the changes are committed to the VM but the buffer remains pinned */
}
void Android_JNI_CloseAudioDevice()
{
JNIEnv *env = Android_JNI_GetEnv();
(*env)->CallStaticVoidMethod(env, mActivityClass, midAudioQuit);
if (audioBuffer) {
(*env)->DeleteGlobalRef(env, audioBuffer);
audioBuffer = NULL;
audioBufferPinned = NULL;
}
}
/* Test for an exception and call SDL_SetError with its detail if one occurs */
/* If the parameter silent is truthy then SDL_SetError() will not be called. */
static bool Android_JNI_ExceptionOccurred(bool silent)
{
SDL_assert(LocalReferenceHolder_IsActive());
JNIEnv *mEnv = Android_JNI_GetEnv();
jthrowable exception = (*mEnv)->ExceptionOccurred(mEnv);
if (exception != NULL) {
jmethodID mid;
/* Until this happens most JNI operations have undefined behaviour */
(*mEnv)->ExceptionClear(mEnv);
if (!silent) {
jclass exceptionClass = (*mEnv)->GetObjectClass(mEnv, exception);
jclass classClass = (*mEnv)->FindClass(mEnv, "java/lang/Class");
mid = (*mEnv)->GetMethodID(mEnv, classClass, "getName", "()Ljava/lang/String;");
jstring exceptionName = (jstring)(*mEnv)->CallObjectMethod(mEnv, exceptionClass, mid);
const char* exceptionNameUTF8 = (*mEnv)->GetStringUTFChars(mEnv, exceptionName, 0);
mid = (*mEnv)->GetMethodID(mEnv, exceptionClass, "getMessage", "()Ljava/lang/String;");
jstring exceptionMessage = (jstring)(*mEnv)->CallObjectMethod(mEnv, exception, mid);
if (exceptionMessage != NULL) {
const char* exceptionMessageUTF8 = (*mEnv)->GetStringUTFChars(mEnv, exceptionMessage, 0);
SDL_SetError("%s: %s", exceptionNameUTF8, exceptionMessageUTF8);
(*mEnv)->ReleaseStringUTFChars(mEnv, exceptionMessage, exceptionMessageUTF8);
} else {
SDL_SetError("%s", exceptionNameUTF8);
}
(*mEnv)->ReleaseStringUTFChars(mEnv, exceptionName, exceptionNameUTF8);
}
return true;
}
return false;
}
static int Internal_Android_JNI_FileOpen(SDL_RWops* ctx)
{
struct LocalReferenceHolder refs = LocalReferenceHolder_Setup(__FUNCTION__);
int result = 0;
jmethodID mid;
jobject context;
jobject assetManager;
jobject inputStream;
jclass channels;
jobject readableByteChannel;
jstring fileNameJString;
jobject fd;
jclass fdCls;
jfieldID descriptor;
JNIEnv *mEnv = Android_JNI_GetEnv();
if (!LocalReferenceHolder_Init(&refs, mEnv)) {
goto failure;
}
fileNameJString = (jstring)ctx->hidden.androidio.fileNameRef;
ctx->hidden.androidio.position = 0;
/* context = SDLActivity.getContext(); */
mid = (*mEnv)->GetStaticMethodID(mEnv, mActivityClass,
"getContext","()Landroid/content/Context;");
context = (*mEnv)->CallStaticObjectMethod(mEnv, mActivityClass, mid);
/* assetManager = context.getAssets(); */
mid = (*mEnv)->GetMethodID(mEnv, (*mEnv)->GetObjectClass(mEnv, context),
"getAssets", "()Landroid/content/res/AssetManager;");
assetManager = (*mEnv)->CallObjectMethod(mEnv, context, mid);
/* First let's try opening the file to obtain an AssetFileDescriptor.
* This method reads the files directly from the APKs using standard *nix calls
*/
mid = (*mEnv)->GetMethodID(mEnv, (*mEnv)->GetObjectClass(mEnv, assetManager), "openFd", "(Ljava/lang/String;)Landroid/content/res/AssetFileDescriptor;");
inputStream = (*mEnv)->CallObjectMethod(mEnv, assetManager, mid, fileNameJString);
if (Android_JNI_ExceptionOccurred(true)) {
goto fallback;
}
mid = (*mEnv)->GetMethodID(mEnv, (*mEnv)->GetObjectClass(mEnv, inputStream), "getStartOffset", "()J");
ctx->hidden.androidio.offset = (*mEnv)->CallLongMethod(mEnv, inputStream, mid);
if (Android_JNI_ExceptionOccurred(true)) {
goto fallback;
}
mid = (*mEnv)->GetMethodID(mEnv, (*mEnv)->GetObjectClass(mEnv, inputStream), "getDeclaredLength", "()J");
ctx->hidden.androidio.size = (*mEnv)->CallLongMethod(mEnv, inputStream, mid);
if (Android_JNI_ExceptionOccurred(true)) {
goto fallback;
}
mid = (*mEnv)->GetMethodID(mEnv, (*mEnv)->GetObjectClass(mEnv, inputStream), "getFileDescriptor", "()Ljava/io/FileDescriptor;");
fd = (*mEnv)->CallObjectMethod(mEnv, inputStream, mid);
fdCls = (*mEnv)->GetObjectClass(mEnv, fd);
descriptor = (*mEnv)->GetFieldID(mEnv, fdCls, "descriptor", "I");
ctx->hidden.androidio.fd = (*mEnv)->GetIntField(mEnv, fd, descriptor);
ctx->hidden.androidio.assetFileDescriptorRef = (*mEnv)->NewGlobalRef(mEnv, inputStream);
/* Seek to the correct offset in the file. */
lseek(ctx->hidden.androidio.fd, (off_t)ctx->hidden.androidio.offset, SEEK_SET);
if (false) {
fallback:
/* Disabled log message because of spam on the Nexus 7 */
/* __android_log_print(ANDROID_LOG_DEBUG, "SDL", "Falling back to legacy InputStream method for opening file"); */
/* Try the old method using InputStream */
ctx->hidden.androidio.assetFileDescriptorRef = NULL;
/* inputStream = assetManager.open(<filename>); */
mid = (*mEnv)->GetMethodID(mEnv, (*mEnv)->GetObjectClass(mEnv, assetManager),
"open", "(Ljava/lang/String;I)Ljava/io/InputStream;");
inputStream = (*mEnv)->CallObjectMethod(mEnv, assetManager, mid, fileNameJString, 1 /* ACCESS_RANDOM */);
if (Android_JNI_ExceptionOccurred(false)) {
goto failure;
}
ctx->hidden.androidio.inputStreamRef = (*mEnv)->NewGlobalRef(mEnv, inputStream);
/* Despite all the visible documentation on [Asset]InputStream claiming
* that the .available() method is not guaranteed to return the entire file
* size, comments in <sdk>/samples/<ver>/ApiDemos/src/com/example/ ...
* android/apis/content/ReadAsset.java imply that Android's
* AssetInputStream.available() /will/ always return the total file size
*/
/* size = inputStream.available(); */
mid = (*mEnv)->GetMethodID(mEnv, (*mEnv)->GetObjectClass(mEnv, inputStream),
"available", "()I");
ctx->hidden.androidio.size = (long)(*mEnv)->CallIntMethod(mEnv, inputStream, mid);
if (Android_JNI_ExceptionOccurred(false)) {
goto failure;
}
/* readableByteChannel = Channels.newChannel(inputStream); */
channels = (*mEnv)->FindClass(mEnv, "java/nio/channels/Channels");
mid = (*mEnv)->GetStaticMethodID(mEnv, channels,
"newChannel",
"(Ljava/io/InputStream;)Ljava/nio/channels/ReadableByteChannel;");
readableByteChannel = (*mEnv)->CallStaticObjectMethod(
mEnv, channels, mid, inputStream);
if (Android_JNI_ExceptionOccurred(false)) {
goto failure;
}
ctx->hidden.androidio.readableByteChannelRef =
(*mEnv)->NewGlobalRef(mEnv, readableByteChannel);
/* Store .read id for reading purposes */
mid = (*mEnv)->GetMethodID(mEnv, (*mEnv)->GetObjectClass(mEnv, readableByteChannel),
"read", "(Ljava/nio/ByteBuffer;)I");
ctx->hidden.androidio.readMethod = mid;
}
if (false) {
failure:
result = -1;
(*mEnv)->DeleteGlobalRef(mEnv, (jobject)ctx->hidden.androidio.fileNameRef);
if(ctx->hidden.androidio.inputStreamRef != NULL) {
(*mEnv)->DeleteGlobalRef(mEnv, (jobject)ctx->hidden.androidio.inputStreamRef);
}
if(ctx->hidden.androidio.readableByteChannelRef != NULL) {
(*mEnv)->DeleteGlobalRef(mEnv, (jobject)ctx->hidden.androidio.readableByteChannelRef);
}
if(ctx->hidden.androidio.assetFileDescriptorRef != NULL) {
(*mEnv)->DeleteGlobalRef(mEnv, (jobject)ctx->hidden.androidio.assetFileDescriptorRef);
}
}
LocalReferenceHolder_Cleanup(&refs);
return result;
}
int Android_JNI_FileOpen(SDL_RWops* ctx,
const char* fileName, const char* mode)
{
struct LocalReferenceHolder refs = LocalReferenceHolder_Setup(__FUNCTION__);
JNIEnv *mEnv = Android_JNI_GetEnv();
int retval;
if (!LocalReferenceHolder_Init(&refs, mEnv)) {
LocalReferenceHolder_Cleanup(&refs);
return -1;
}
if (!ctx) {
LocalReferenceHolder_Cleanup(&refs);
return -1;
}
jstring fileNameJString = (*mEnv)->NewStringUTF(mEnv, fileName);
ctx->hidden.androidio.fileNameRef = (*mEnv)->NewGlobalRef(mEnv, fileNameJString);
ctx->hidden.androidio.inputStreamRef = NULL;
ctx->hidden.androidio.readableByteChannelRef = NULL;
ctx->hidden.androidio.readMethod = NULL;
ctx->hidden.androidio.assetFileDescriptorRef = NULL;
retval = Internal_Android_JNI_FileOpen(ctx);
LocalReferenceHolder_Cleanup(&refs);
return retval;
}
size_t Android_JNI_FileRead(SDL_RWops* ctx, void* buffer,
size_t size, size_t maxnum)
{
struct LocalReferenceHolder refs = LocalReferenceHolder_Setup(__FUNCTION__);
if (ctx->hidden.androidio.assetFileDescriptorRef) {
size_t bytesMax = size * maxnum;
if (ctx->hidden.androidio.size != -1 /* UNKNOWN_LENGTH */ && ctx->hidden.androidio.position + bytesMax > ctx->hidden.androidio.size) {
bytesMax = ctx->hidden.androidio.size - ctx->hidden.androidio.position;
}
size_t result = read(ctx->hidden.androidio.fd, buffer, bytesMax );
if (result > 0) {
ctx->hidden.androidio.position += result;
LocalReferenceHolder_Cleanup(&refs);
return result / size;
}
LocalReferenceHolder_Cleanup(&refs);
return 0;
} else {
jlong bytesRemaining = (jlong) (size * maxnum);
jlong bytesMax = (jlong) (ctx->hidden.androidio.size - ctx->hidden.androidio.position);
int bytesRead = 0;
/* Don't read more bytes than those that remain in the file, otherwise we get an exception */
if (bytesRemaining > bytesMax) bytesRemaining = bytesMax;
JNIEnv *mEnv = Android_JNI_GetEnv();
if (!LocalReferenceHolder_Init(&refs, mEnv)) {
LocalReferenceHolder_Cleanup(&refs);
return 0;
}
jobject readableByteChannel = (jobject)ctx->hidden.androidio.readableByteChannelRef;
jmethodID readMethod = (jmethodID)ctx->hidden.androidio.readMethod;
jobject byteBuffer = (*mEnv)->NewDirectByteBuffer(mEnv, buffer, bytesRemaining);
while (bytesRemaining > 0) {
/* result = readableByteChannel.read(...); */
int result = (*mEnv)->CallIntMethod(mEnv, readableByteChannel, readMethod, byteBuffer);
if (Android_JNI_ExceptionOccurred(false)) {
LocalReferenceHolder_Cleanup(&refs);
return 0;
}
if (result < 0) {
break;
}
bytesRemaining -= result;
bytesRead += result;
ctx->hidden.androidio.position += result;
}
LocalReferenceHolder_Cleanup(&refs);
return bytesRead / size;
}
}
size_t Android_JNI_FileWrite(SDL_RWops* ctx, const void* buffer,
size_t size, size_t num)
{
SDL_SetError("Cannot write to Android package filesystem");
return 0;
}
static int Internal_Android_JNI_FileClose(SDL_RWops* ctx, bool release)
{
struct LocalReferenceHolder refs = LocalReferenceHolder_Setup(__FUNCTION__);
int result = 0;
JNIEnv *mEnv = Android_JNI_GetEnv();
if (!LocalReferenceHolder_Init(&refs, mEnv)) {
LocalReferenceHolder_Cleanup(&refs);
return SDL_SetError("Failed to allocate enough JVM local references");
}
if (ctx) {
if (release) {
(*mEnv)->DeleteGlobalRef(mEnv, (jobject)ctx->hidden.androidio.fileNameRef);
}
if (ctx->hidden.androidio.assetFileDescriptorRef) {
jobject inputStream = (jobject)ctx->hidden.androidio.assetFileDescriptorRef;
jmethodID mid = (*mEnv)->GetMethodID(mEnv, (*mEnv)->GetObjectClass(mEnv, inputStream),
"close", "()V");
(*mEnv)->CallVoidMethod(mEnv, inputStream, mid);
(*mEnv)->DeleteGlobalRef(mEnv, (jobject)ctx->hidden.androidio.assetFileDescriptorRef);
if (Android_JNI_ExceptionOccurred(false)) {
result = -1;
}
}
else {
jobject inputStream = (jobject)ctx->hidden.androidio.inputStreamRef;
/* inputStream.close(); */
jmethodID mid = (*mEnv)->GetMethodID(mEnv, (*mEnv)->GetObjectClass(mEnv, inputStream),
"close", "()V");
(*mEnv)->CallVoidMethod(mEnv, inputStream, mid);
(*mEnv)->DeleteGlobalRef(mEnv, (jobject)ctx->hidden.androidio.inputStreamRef);
(*mEnv)->DeleteGlobalRef(mEnv, (jobject)ctx->hidden.androidio.readableByteChannelRef);
if (Android_JNI_ExceptionOccurred(false)) {
result = -1;
}
}
if (release) {
SDL_FreeRW(ctx);
}
}
LocalReferenceHolder_Cleanup(&refs);
return result;
}
Sint64 Android_JNI_FileSize(SDL_RWops* ctx)
{
return ctx->hidden.androidio.size;
}
Sint64 Android_JNI_FileSeek(SDL_RWops* ctx, Sint64 offset, int whence)
{
if (ctx->hidden.androidio.assetFileDescriptorRef) {
switch (whence) {
case RW_SEEK_SET:
if (ctx->hidden.androidio.size != -1 /* UNKNOWN_LENGTH */ && offset > ctx->hidden.androidio.size) offset = ctx->hidden.androidio.size;
offset += ctx->hidden.androidio.offset;
break;
case RW_SEEK_CUR:
offset += ctx->hidden.androidio.position;
if (ctx->hidden.androidio.size != -1 /* UNKNOWN_LENGTH */ && offset > ctx->hidden.androidio.size) offset = ctx->hidden.androidio.size;
offset += ctx->hidden.androidio.offset;
break;
case RW_SEEK_END:
offset = ctx->hidden.androidio.offset + ctx->hidden.androidio.size + offset;
break;
default:
return SDL_SetError("Unknown value for 'whence'");
}
whence = SEEK_SET;
off_t ret = lseek(ctx->hidden.androidio.fd, (off_t)offset, SEEK_SET);
if (ret == -1) return -1;
ctx->hidden.androidio.position = ret - ctx->hidden.androidio.offset;
} else {
Sint64 newPosition;
switch (whence) {
case RW_SEEK_SET:
newPosition = offset;
break;
case RW_SEEK_CUR:
newPosition = ctx->hidden.androidio.position + offset;
break;
case RW_SEEK_END:
newPosition = ctx->hidden.androidio.size + offset;
break;
default:
return SDL_SetError("Unknown value for 'whence'");
}
/* Validate the new position */
if (newPosition < 0) {
return SDL_Error(SDL_EFSEEK);
}
if (newPosition > ctx->hidden.androidio.size) {
newPosition = ctx->hidden.androidio.size;
}
Sint64 movement = newPosition - ctx->hidden.androidio.position;
if (movement > 0) {
unsigned char buffer[4096];
/* The easy case where we're seeking forwards */
while (movement > 0) {
Sint64 amount = sizeof (buffer);
if (amount > movement) {
amount = movement;
}
size_t result = Android_JNI_FileRead(ctx, buffer, 1, amount);
if (result <= 0) {
/* Failed to read/skip the required amount, so fail */
return -1;
}
movement -= result;
}
} else if (movement < 0) {
/* We can't seek backwards so we have to reopen the file and seek */
/* forwards which obviously isn't very efficient */
Internal_Android_JNI_FileClose(ctx, false);
Internal_Android_JNI_FileOpen(ctx);
Android_JNI_FileSeek(ctx, newPosition, RW_SEEK_SET);
}
}
return ctx->hidden.androidio.position;
}
int Android_JNI_FileClose(SDL_RWops* ctx)
{
return Internal_Android_JNI_FileClose(ctx, true);
}
/* returns a new global reference which needs to be released later */
static jobject Android_JNI_GetSystemServiceObject(const char* name)
{
struct LocalReferenceHolder refs = LocalReferenceHolder_Setup(__FUNCTION__);
JNIEnv* env = Android_JNI_GetEnv();
jobject retval = NULL;
if (!LocalReferenceHolder_Init(&refs, env)) {
LocalReferenceHolder_Cleanup(&refs);
return NULL;
}
jstring service = (*env)->NewStringUTF(env, name);
jmethodID mid;
mid = (*env)->GetStaticMethodID(env, mActivityClass, "getContext", "()Landroid/content/Context;");
jobject context = (*env)->CallStaticObjectMethod(env, mActivityClass, mid);
mid = (*env)->GetMethodID(env, mActivityClass, "getSystemServiceFromUiThread", "(Ljava/lang/String;)Ljava/lang/Object;");
jobject manager = (*env)->CallObjectMethod(env, context, mid, service);
(*env)->DeleteLocalRef(env, service);
retval = manager ? (*env)->NewGlobalRef(env, manager) : NULL;
LocalReferenceHolder_Cleanup(&refs);
return retval;
}
#define SETUP_CLIPBOARD(error) \
struct LocalReferenceHolder refs = LocalReferenceHolder_Setup(__FUNCTION__); \
JNIEnv* env = Android_JNI_GetEnv(); \
if (!LocalReferenceHolder_Init(&refs, env)) { \
LocalReferenceHolder_Cleanup(&refs); \
return error; \
} \
jobject clipboard = Android_JNI_GetSystemServiceObject("clipboard"); \
if (!clipboard) { \
LocalReferenceHolder_Cleanup(&refs); \
return error; \
}
#define CLEANUP_CLIPBOARD() \
LocalReferenceHolder_Cleanup(&refs);
int Android_JNI_SetClipboardText(const char* text)
{
SETUP_CLIPBOARD(-1)
jmethodID mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, clipboard), "setText", "(Ljava/lang/CharSequence;)V");
jstring string = (*env)->NewStringUTF(env, text);
(*env)->CallVoidMethod(env, clipboard, mid, string);
(*env)->DeleteGlobalRef(env, clipboard);
(*env)->DeleteLocalRef(env, string);
CLEANUP_CLIPBOARD();
return 0;
}
char* Android_JNI_GetClipboardText()
{
SETUP_CLIPBOARD(SDL_strdup(""))
jmethodID mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, clipboard), "getText", "()Ljava/lang/CharSequence;");
jobject sequence = (*env)->CallObjectMethod(env, clipboard, mid);
(*env)->DeleteGlobalRef(env, clipboard);
if (sequence) {
mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, sequence), "toString", "()Ljava/lang/String;");
jstring string = (jstring)((*env)->CallObjectMethod(env, sequence, mid));
const char* utf = (*env)->GetStringUTFChars(env, string, 0);
if (utf) {
char* text = SDL_strdup(utf);
(*env)->ReleaseStringUTFChars(env, string, utf);
CLEANUP_CLIPBOARD();
return text;
}
}
CLEANUP_CLIPBOARD();
return SDL_strdup("");
}
SDL_bool Android_JNI_HasClipboardText()
{
SETUP_CLIPBOARD(SDL_FALSE)
jmethodID mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, clipboard), "hasText", "()Z");
jboolean has = (*env)->CallBooleanMethod(env, clipboard, mid);
(*env)->DeleteGlobalRef(env, clipboard);
CLEANUP_CLIPBOARD();
return has ? SDL_TRUE : SDL_FALSE;
}
/* returns 0 on success or -1 on error (others undefined then)
* returns truthy or falsy value in plugged, charged and battery
* returns the value in seconds and percent or -1 if not available
*/
int Android_JNI_GetPowerInfo(int* plugged, int* charged, int* battery, int* seconds, int* percent)
{
struct LocalReferenceHolder refs = LocalReferenceHolder_Setup(__FUNCTION__);
JNIEnv* env = Android_JNI_GetEnv();
if (!LocalReferenceHolder_Init(&refs, env)) {
LocalReferenceHolder_Cleanup(&refs);
return -1;
}
jmethodID mid;
mid = (*env)->GetStaticMethodID(env, mActivityClass, "getContext", "()Landroid/content/Context;");
jobject context = (*env)->CallStaticObjectMethod(env, mActivityClass, mid);
jstring action = (*env)->NewStringUTF(env, "android.intent.action.BATTERY_CHANGED");
jclass cls = (*env)->FindClass(env, "android/content/IntentFilter");
mid = (*env)->GetMethodID(env, cls, "<init>", "(Ljava/lang/String;)V");
jobject filter = (*env)->NewObject(env, cls, mid, action);
(*env)->DeleteLocalRef(env, action);
mid = (*env)->GetMethodID(env, mActivityClass, "registerReceiver", "(Landroid/content/BroadcastReceiver;Landroid/content/IntentFilter;)Landroid/content/Intent;");
jobject intent = (*env)->CallObjectMethod(env, context, mid, NULL, filter);
(*env)->DeleteLocalRef(env, filter);
cls = (*env)->GetObjectClass(env, intent);
jstring iname;
jmethodID imid = (*env)->GetMethodID(env, cls, "getIntExtra", "(Ljava/lang/String;I)I");
#define GET_INT_EXTRA(var, key) \
iname = (*env)->NewStringUTF(env, key); \
int var = (*env)->CallIntMethod(env, intent, imid, iname, -1); \
(*env)->DeleteLocalRef(env, iname);
jstring bname;
jmethodID bmid = (*env)->GetMethodID(env, cls, "getBooleanExtra", "(Ljava/lang/String;Z)Z");
#define GET_BOOL_EXTRA(var, key) \
bname = (*env)->NewStringUTF(env, key); \
int var = (*env)->CallBooleanMethod(env, intent, bmid, bname, JNI_FALSE); \
(*env)->DeleteLocalRef(env, bname);
if (plugged) {
GET_INT_EXTRA(plug, "plugged") /* == BatteryManager.EXTRA_PLUGGED (API 5) */
if (plug == -1) {
LocalReferenceHolder_Cleanup(&refs);
return -1;
}
/* 1 == BatteryManager.BATTERY_PLUGGED_AC */
/* 2 == BatteryManager.BATTERY_PLUGGED_USB */
*plugged = (0 < plug) ? 1 : 0;
}
if (charged) {
GET_INT_EXTRA(status, "status") /* == BatteryManager.EXTRA_STATUS (API 5) */
if (status == -1) {
LocalReferenceHolder_Cleanup(&refs);
return -1;
}
/* 5 == BatteryManager.BATTERY_STATUS_FULL */
*charged = (status == 5) ? 1 : 0;
}
if (battery) {
GET_BOOL_EXTRA(present, "present") /* == BatteryManager.EXTRA_PRESENT (API 5) */
*battery = present ? 1 : 0;
}
if (seconds) {
*seconds = -1; /* not possible */
}
if (percent) {
GET_INT_EXTRA(level, "level") /* == BatteryManager.EXTRA_LEVEL (API 5) */
GET_INT_EXTRA(scale, "scale") /* == BatteryManager.EXTRA_SCALE (API 5) */
if ((level == -1) || (scale == -1)) {
LocalReferenceHolder_Cleanup(&refs);
return -1;
}
*percent = level * 100 / scale;
}
(*env)->DeleteLocalRef(env, intent);
LocalReferenceHolder_Cleanup(&refs);
return 0;
}
/* returns number of found touch devices as return value and ids in parameter ids */
int Android_JNI_GetTouchDeviceIds(int **ids) {
JNIEnv *env = Android_JNI_GetEnv();
jint sources = 4098; /* == InputDevice.SOURCE_TOUCHSCREEN */
jmethodID mid = (*env)->GetStaticMethodID(env, mActivityClass, "inputGetInputDeviceIds", "(I)[I");
jintArray array = (jintArray) (*env)->CallStaticObjectMethod(env, mActivityClass, mid, sources);
int number = 0;
*ids = NULL;
if (array) {
number = (int) (*env)->GetArrayLength(env, array);
if (0 < number) {
jint* elements = (*env)->GetIntArrayElements(env, array, NULL);
if (elements) {
int i;
*ids = SDL_malloc(number * sizeof (**ids));
for (i = 0; i < number; ++i) { /* not assuming sizeof (jint) == sizeof (int) */
(*ids)[i] = elements[i];
}
(*env)->ReleaseIntArrayElements(env, array, elements, JNI_ABORT);
}
}
(*env)->DeleteLocalRef(env, array);
}
return number;
}
void Android_JNI_PollInputDevices()
{
JNIEnv *env = Android_JNI_GetEnv();
(*env)->CallStaticVoidMethod(env, mActivityClass, midPollInputDevices);
}
/* sends message to be handled on the UI event dispatch thread */
int Android_JNI_SendMessage(int command, int param)
{
JNIEnv *env = Android_JNI_GetEnv();
if (!env) {
return -1;
}
jmethodID mid = (*env)->GetStaticMethodID(env, mActivityClass, "sendMessage", "(II)Z");
if (!mid) {
return -1;
}
jboolean success = (*env)->CallStaticBooleanMethod(env, mActivityClass, mid, command, param);
return success ? 0 : -1;
}
void Android_JNI_ShowTextInput(SDL_Rect *inputRect)
{
JNIEnv *env = Android_JNI_GetEnv();
if (!env) {
return;
}
jmethodID mid = (*env)->GetStaticMethodID(env, mActivityClass, "showTextInput", "(IIII)Z");
if (!mid) {
return;
}
(*env)->CallStaticBooleanMethod(env, mActivityClass, mid,
inputRect->x,
inputRect->y,
inputRect->w,
inputRect->h );
}
void Android_JNI_HideTextInput()
{
/* has to match Activity constant */
const int COMMAND_TEXTEDIT_HIDE = 3;
Android_JNI_SendMessage(COMMAND_TEXTEDIT_HIDE, 0);
}
/*
//////////////////////////////////////////////////////////////////////////////
//
// Functions exposed to SDL applications in SDL_system.h
//////////////////////////////////////////////////////////////////////////////
*/
void *SDL_AndroidGetJNIEnv()
{
return Android_JNI_GetEnv();
}
void *SDL_AndroidGetActivity()
{
/* See SDL_system.h for caveats on using this function. */
jmethodID mid;
JNIEnv *env = Android_JNI_GetEnv();
if (!env) {
return NULL;
}
/* return SDLActivity.getContext(); */
mid = (*env)->GetStaticMethodID(env, mActivityClass,
"getContext","()Landroid/content/Context;");
return (*env)->CallStaticObjectMethod(env, mActivityClass, mid);
}
const char * SDL_AndroidGetInternalStoragePath()
{
static char *s_AndroidInternalFilesPath = NULL;
if (!s_AndroidInternalFilesPath) {
struct LocalReferenceHolder refs = LocalReferenceHolder_Setup(__FUNCTION__);
jmethodID mid;
jobject context;
jobject fileObject;
jstring pathString;
const char *path;
JNIEnv *env = Android_JNI_GetEnv();
if (!LocalReferenceHolder_Init(&refs, env)) {
LocalReferenceHolder_Cleanup(&refs);
return NULL;
}
/* context = SDLActivity.getContext(); */
mid = (*env)->GetStaticMethodID(env, mActivityClass,
"getContext","()Landroid/content/Context;");
context = (*env)->CallStaticObjectMethod(env, mActivityClass, mid);
/* fileObj = context.getFilesDir(); */
mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, context),
"getFilesDir", "()Ljava/io/File;");
fileObject = (*env)->CallObjectMethod(env, context, mid);
if (!fileObject) {
SDL_SetError("Couldn't get internal directory");
LocalReferenceHolder_Cleanup(&refs);
return NULL;
}
/* path = fileObject.getAbsolutePath(); */
mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, fileObject),
"getAbsolutePath", "()Ljava/lang/String;");
pathString = (jstring)(*env)->CallObjectMethod(env, fileObject, mid);
path = (*env)->GetStringUTFChars(env, pathString, NULL);
s_AndroidInternalFilesPath = SDL_strdup(path);
(*env)->ReleaseStringUTFChars(env, pathString, path);
LocalReferenceHolder_Cleanup(&refs);
}
return s_AndroidInternalFilesPath;
}
int SDL_AndroidGetExternalStorageState()
{
struct LocalReferenceHolder refs = LocalReferenceHolder_Setup(__FUNCTION__);
jmethodID mid;
jclass cls;
jstring stateString;
const char *state;
int stateFlags;
JNIEnv *env = Android_JNI_GetEnv();
if (!LocalReferenceHolder_Init(&refs, env)) {
LocalReferenceHolder_Cleanup(&refs);
return 0;
}
cls = (*env)->FindClass(env, "android/os/Environment");
mid = (*env)->GetStaticMethodID(env, cls,
"getExternalStorageState", "()Ljava/lang/String;");
stateString = (jstring)(*env)->CallStaticObjectMethod(env, cls, mid);
state = (*env)->GetStringUTFChars(env, stateString, NULL);
/* Print an info message so people debugging know the storage state */
__android_log_print(ANDROID_LOG_INFO, "SDL", "external storage state: %s", state);
if (SDL_strcmp(state, "mounted") == 0) {
stateFlags = SDL_ANDROID_EXTERNAL_STORAGE_READ |
SDL_ANDROID_EXTERNAL_STORAGE_WRITE;
} else if (SDL_strcmp(state, "mounted_ro") == 0) {
stateFlags = SDL_ANDROID_EXTERNAL_STORAGE_READ;
} else {
stateFlags = 0;
}
(*env)->ReleaseStringUTFChars(env, stateString, state);
LocalReferenceHolder_Cleanup(&refs);
return stateFlags;
}
const char * SDL_AndroidGetExternalStoragePath()
{
static char *s_AndroidExternalFilesPath = NULL;
if (!s_AndroidExternalFilesPath) {
struct LocalReferenceHolder refs = LocalReferenceHolder_Setup(__FUNCTION__);
jmethodID mid;
jobject context;
jobject fileObject;
jstring pathString;
const char *path;
JNIEnv *env = Android_JNI_GetEnv();
if (!LocalReferenceHolder_Init(&refs, env)) {
LocalReferenceHolder_Cleanup(&refs);
return NULL;
}
/* context = SDLActivity.getContext(); */
mid = (*env)->GetStaticMethodID(env, mActivityClass,
"getContext","()Landroid/content/Context;");
context = (*env)->CallStaticObjectMethod(env, mActivityClass, mid);
/* fileObj = context.getExternalFilesDir(); */
mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, context),
"getExternalFilesDir", "(Ljava/lang/String;)Ljava/io/File;");
fileObject = (*env)->CallObjectMethod(env, context, mid, NULL);
if (!fileObject) {
SDL_SetError("Couldn't get external directory");
LocalReferenceHolder_Cleanup(&refs);
return NULL;
}
/* path = fileObject.getAbsolutePath(); */
mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, fileObject),
"getAbsolutePath", "()Ljava/lang/String;");
pathString = (jstring)(*env)->CallObjectMethod(env, fileObject, mid);
path = (*env)->GetStringUTFChars(env, pathString, NULL);
s_AndroidExternalFilesPath = SDL_strdup(path);
(*env)->ReleaseStringUTFChars(env, pathString, path);
LocalReferenceHolder_Cleanup(&refs);
}
return s_AndroidExternalFilesPath;
}
#endif /* __ANDROID__ */
/* vi: set ts=4 sw=4 expandtab: */
|