/
SDL_androidevents.c
239 lines (197 loc) · 8.36 KB
/
SDL_androidevents.c
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
/*
Simple DirectMedia Layer
Copyright (C) 1997-2020 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"
#if SDL_VIDEO_DRIVER_ANDROID
#include "SDL_androidevents.h"
#include "SDL_events.h"
#include "SDL_androidkeyboard.h"
#include "SDL_androidwindow.h"
#include "../SDL_sysvideo.h"
#include "../../events/SDL_events_c.h"
/* Can't include sysaudio "../../audio/android/SDL_androidaudio.h"
* because of THIS redefinition */
#if !SDL_AUDIO_DISABLED && SDL_AUDIO_DRIVER_ANDROID
extern void ANDROIDAUDIO_ResumeDevices(void);
extern void ANDROIDAUDIO_PauseDevices(void);
#else
static void ANDROIDAUDIO_ResumeDevices(void) {}
static void ANDROIDAUDIO_PauseDevices(void) {}
#endif
#if !SDL_AUDIO_DISABLED && SDL_AUDIO_DRIVER_OPENSLES
extern void openslES_ResumeDevices(void);
extern void openslES_PauseDevices(void);
#else
static void openslES_ResumeDevices(void) {}
static void openslES_PauseDevices(void) {}
#endif
/* Number of 'type' events in the event queue */
static int
SDL_NumberOfEvents(Uint32 type)
{
return SDL_PeepEvents(NULL, 0, SDL_PEEKEVENT, type, type);
}
static void
android_egl_context_restore(SDL_Window *window)
{
if (window) {
SDL_Event event;
SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
if (SDL_GL_MakeCurrent(window, (SDL_GLContext) data->egl_context) < 0) {
/* The context is no longer valid, create a new one */
data->egl_context = (EGLContext) SDL_GL_CreateContext(window);
SDL_GL_MakeCurrent(window, (SDL_GLContext) data->egl_context);
event.type = SDL_RENDER_DEVICE_RESET;
SDL_PushEvent(&event);
}
data->backup_done = 0;
}
}
static void
android_egl_context_backup(SDL_Window *window)
{
if (window) {
/* Keep a copy of the EGL Context so we can try to restore it when we resume */
SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
data->egl_context = SDL_GL_GetCurrentContext();
/* We need to do this so the EGLSurface can be freed */
SDL_GL_MakeCurrent(window, NULL);
data->backup_done = 1;
}
}
/*
* Android_ResumeSem and Android_PauseSem are signaled from Java_org_libsdl_app_SDLActivity_nativePause and Java_org_libsdl_app_SDLActivity_nativeResume
* When the pause semaphore is signaled, if Android_PumpEvents_Blocking is used, the event loop will block until the resume signal is emitted.
*
* No polling necessary
*/
void
Android_PumpEvents_Blocking(_THIS)
{
SDL_VideoData *videodata = (SDL_VideoData *)_this->driverdata;
if (videodata->isPaused) {
SDL_bool isContextExternal = SDL_IsVideoContextExternal();
/* Make sure this is the last thing we do before pausing */
if (!isContextExternal) {
SDL_LockMutex(Android_ActivityMutex);
android_egl_context_backup(Android_Window);
SDL_UnlockMutex(Android_ActivityMutex);
}
ANDROIDAUDIO_PauseDevices();
openslES_PauseDevices();
if (SDL_SemWait(Android_ResumeSem) == 0) {
videodata->isPaused = 0;
/* Android_ResumeSem was signaled */
SDL_SendAppEvent(SDL_APP_WILLENTERFOREGROUND);
SDL_SendAppEvent(SDL_APP_DIDENTERFOREGROUND);
SDL_SendWindowEvent(Android_Window, SDL_WINDOWEVENT_RESTORED, 0, 0);
ANDROIDAUDIO_ResumeDevices();
openslES_ResumeDevices();
/* Restore the GL Context from here, as this operation is thread dependent */
if (!isContextExternal && !SDL_HasEvent(SDL_QUIT)) {
SDL_LockMutex(Android_ActivityMutex);
android_egl_context_restore(Android_Window);
SDL_UnlockMutex(Android_ActivityMutex);
}
/* Make sure SW Keyboard is restored when an app becomes foreground */
if (SDL_IsTextInputActive()) {
Android_StartTextInput(_this); /* Only showTextInput */
}
}
} else {
if (videodata->isPausing || SDL_SemTryWait(Android_PauseSem) == 0) {
/* Android_PauseSem was signaled */
if (videodata->isPausing == 0) {
SDL_SendWindowEvent(Android_Window, SDL_WINDOWEVENT_MINIMIZED, 0, 0);
SDL_SendAppEvent(SDL_APP_WILLENTERBACKGROUND);
SDL_SendAppEvent(SDL_APP_DIDENTERBACKGROUND);
}
/* We've been signaled to pause (potentially several times), but before we block ourselves,
* we need to make sure that the very last event (of the first pause sequence, if several)
* has reached the app */
if (SDL_NumberOfEvents(SDL_APP_DIDENTERBACKGROUND) > SDL_SemValue(Android_PauseSem)) {
videodata->isPausing = 1;
} else {
videodata->isPausing = 0;
videodata->isPaused = 1;
}
}
}
}
void
Android_PumpEvents_NonBlocking(_THIS)
{
SDL_VideoData *videodata = (SDL_VideoData *)_this->driverdata;
static int backup_context = 0;
if (videodata->isPaused) {
SDL_bool isContextExternal = SDL_IsVideoContextExternal();
if (backup_context) {
if (!isContextExternal) {
SDL_LockMutex(Android_ActivityMutex);
android_egl_context_backup(Android_Window);
SDL_UnlockMutex(Android_ActivityMutex);
}
if (videodata->pauseAudio) {
ANDROIDAUDIO_PauseDevices();
openslES_PauseDevices();
}
backup_context = 0;
}
if (SDL_SemTryWait(Android_ResumeSem) == 0) {
videodata->isPaused = 0;
/* Android_ResumeSem was signaled */
SDL_SendAppEvent(SDL_APP_WILLENTERFOREGROUND);
SDL_SendAppEvent(SDL_APP_DIDENTERFOREGROUND);
SDL_SendWindowEvent(Android_Window, SDL_WINDOWEVENT_RESTORED, 0, 0);
if (videodata->pauseAudio) {
ANDROIDAUDIO_ResumeDevices();
openslES_ResumeDevices();
}
/* Restore the GL Context from here, as this operation is thread dependent */
if (!isContextExternal && !SDL_HasEvent(SDL_QUIT)) {
SDL_LockMutex(Android_ActivityMutex);
android_egl_context_restore(Android_Window);
SDL_UnlockMutex(Android_ActivityMutex);
}
/* Make sure SW Keyboard is restored when an app becomes foreground */
if (SDL_IsTextInputActive()) {
Android_StartTextInput(_this); /* Only showTextInput */
}
}
} else {
if (videodata->isPausing || SDL_SemTryWait(Android_PauseSem) == 0) {
/* Android_PauseSem was signaled */
if (videodata->isPausing == 0) {
SDL_SendWindowEvent(Android_Window, SDL_WINDOWEVENT_MINIMIZED, 0, 0);
SDL_SendAppEvent(SDL_APP_WILLENTERBACKGROUND);
SDL_SendAppEvent(SDL_APP_DIDENTERBACKGROUND);
}
/* We've been signaled to pause (potentially several times), but before we block ourselves,
* we need to make sure that the very last event (of the first pause sequence, if several)
* has reached the app */
if (SDL_NumberOfEvents(SDL_APP_DIDENTERBACKGROUND) > SDL_SemValue(Android_PauseSem)) {
videodata->isPausing = 1;
} else {
videodata->isPausing = 0;
videodata->isPaused = 1;
backup_context = 1;
}
}
}
}
#endif /* SDL_VIDEO_DRIVER_ANDROID */
/* vi: set ts=4 sw=4 expandtab: */