| /* |
| Simple DirectMedia Layer |
| Copyright (C) 1997-2021 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| /* The context is no longer valid, create a new one */ |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: */ |
