src/video/android/SDL_androidvideo.c
author Sam Lantinga <slouken@libsdl.org>
Tue, 31 Oct 2017 13:49:59 -0700
changeset 11662 a996f135cc81
parent 11383 6cafb5954aaf
child 11811 5d94cb6b24d3
permissions -rw-r--r--
Add SDL_GetDisplayDPI implementation on Android. (thanks Rachel!)
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/*
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  Simple DirectMedia Layer
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  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
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  This software is provided 'as-is', without any express or implied
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  warranty.  In no event will the authors be held liable for any damages
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  arising from the use of this software.
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  Permission is granted to anyone to use this software for any purpose,
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  including commercial applications, and to alter it and redistribute it
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  freely, subject to the following restrictions:
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  1. The origin of this software must not be misrepresented; you must not
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     claim that you wrote the original software. If you use this software
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     in a product, an acknowledgment in the product documentation would be
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     appreciated but is not required.
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  2. Altered source versions must be plainly marked as such, and must not be
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     misrepresented as being the original software.
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  3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../../SDL_internal.h"
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#if SDL_VIDEO_DRIVER_ANDROID
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/* Android SDL video driver implementation
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*/
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#include "SDL_video.h"
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#include "SDL_mouse.h"
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#include "../SDL_sysvideo.h"
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#include "../SDL_pixels_c.h"
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#include "../../events/SDL_events_c.h"
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#include "../../events/SDL_windowevents_c.h"
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#include "SDL_androidvideo.h"
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#include "SDL_androidgl.h"
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#include "SDL_androidclipboard.h"
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#include "SDL_androidevents.h"
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#include "SDL_androidkeyboard.h"
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#include "SDL_androidmouse.h"
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#include "SDL_androidtouch.h"
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#include "SDL_androidwindow.h"
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#include "SDL_androidvulkan.h"
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#define ANDROID_VID_DRIVER_NAME "Android"
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/* Initialization/Query functions */
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static int Android_VideoInit(_THIS);
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static void Android_VideoQuit(_THIS);
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int Android_GetDisplayDPI(_THIS, SDL_VideoDisplay * display, float * ddpi, float * hdpi, float * vdpi);
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#include "../SDL_egl_c.h"
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#define Android_GLES_GetProcAddress SDL_EGL_GetProcAddress
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#define Android_GLES_UnloadLibrary SDL_EGL_UnloadLibrary
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#define Android_GLES_SetSwapInterval SDL_EGL_SetSwapInterval
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#define Android_GLES_GetSwapInterval SDL_EGL_GetSwapInterval
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#define Android_GLES_DeleteContext SDL_EGL_DeleteContext
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/* Android driver bootstrap functions */
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/* These are filled in with real values in Android_SetScreenResolution on init (before SDL_main()) */
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int Android_ScreenWidth = 0;
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int Android_ScreenHeight = 0;
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Uint32 Android_ScreenFormat = SDL_PIXELFORMAT_UNKNOWN;
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static int Android_ScreenRate = 0;
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SDL_sem *Android_PauseSem = NULL, *Android_ResumeSem = NULL;
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/* Currently only one window */
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SDL_Window *Android_Window = NULL;
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static int
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Android_Available(void)
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{
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    return 1;
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}
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static void
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Android_SuspendScreenSaver(_THIS)
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{
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    Android_JNI_SuspendScreenSaver(_this->suspend_screensaver);
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}
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static void
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Android_DeleteDevice(SDL_VideoDevice * device)
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{
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    SDL_free(device->driverdata);
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    SDL_free(device);
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}
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static SDL_VideoDevice *
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Android_CreateDevice(int devindex)
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{
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    SDL_VideoDevice *device;
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    SDL_VideoData *data;
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    /* Initialize all variables that we clean on shutdown */
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    device = (SDL_VideoDevice *) SDL_calloc(1, sizeof(SDL_VideoDevice));
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    if (!device) {
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        SDL_OutOfMemory();
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        return NULL;
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    }
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    data = (SDL_VideoData*) SDL_calloc(1, sizeof(SDL_VideoData));
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    if (!data) {
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        SDL_OutOfMemory();
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        SDL_free(device);
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        return NULL;
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    }
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    device->driverdata = data;
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    /* Set the function pointers */
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    device->VideoInit = Android_VideoInit;
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    device->VideoQuit = Android_VideoQuit;
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    device->PumpEvents = Android_PumpEvents;
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    device->GetDisplayDPI = Android_GetDisplayDPI;
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    device->CreateSDLWindow = Android_CreateWindow;
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    device->SetWindowTitle = Android_SetWindowTitle;
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    device->DestroyWindow = Android_DestroyWindow;
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    device->GetWindowWMInfo = Android_GetWindowWMInfo;
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    device->free = Android_DeleteDevice;
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    /* GL pointers */
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    device->GL_LoadLibrary = Android_GLES_LoadLibrary;
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    device->GL_GetProcAddress = Android_GLES_GetProcAddress;
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    device->GL_UnloadLibrary = Android_GLES_UnloadLibrary;
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    device->GL_CreateContext = Android_GLES_CreateContext;
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    device->GL_MakeCurrent = Android_GLES_MakeCurrent;
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    device->GL_SetSwapInterval = Android_GLES_SetSwapInterval;
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    device->GL_GetSwapInterval = Android_GLES_GetSwapInterval;
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    device->GL_SwapWindow = Android_GLES_SwapWindow;
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    device->GL_DeleteContext = Android_GLES_DeleteContext;
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#if SDL_VIDEO_VULKAN
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    device->Vulkan_LoadLibrary = Android_Vulkan_LoadLibrary;
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    device->Vulkan_UnloadLibrary = Android_Vulkan_UnloadLibrary;
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    device->Vulkan_GetInstanceExtensions = Android_Vulkan_GetInstanceExtensions;
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    device->Vulkan_CreateSurface = Android_Vulkan_CreateSurface;
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#endif
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    /* Screensaver */
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    device->SuspendScreenSaver = Android_SuspendScreenSaver;
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    /* Text input */
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    device->StartTextInput = Android_StartTextInput;
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    device->StopTextInput = Android_StopTextInput;
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    device->SetTextInputRect = Android_SetTextInputRect;
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    /* Screen keyboard */
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    device->HasScreenKeyboardSupport = Android_HasScreenKeyboardSupport;
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    device->IsScreenKeyboardShown = Android_IsScreenKeyboardShown;
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    /* Clipboard */
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    device->SetClipboardText = Android_SetClipboardText;
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    device->GetClipboardText = Android_GetClipboardText;
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    device->HasClipboardText = Android_HasClipboardText;
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    return device;
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}
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VideoBootStrap Android_bootstrap = {
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    ANDROID_VID_DRIVER_NAME, "SDL Android video driver",
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    Android_Available, Android_CreateDevice
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};
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int
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Android_VideoInit(_THIS)
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{
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    SDL_DisplayMode mode;
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    mode.format = Android_ScreenFormat;
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    mode.w = Android_ScreenWidth;
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    mode.h = Android_ScreenHeight;
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    mode.refresh_rate = Android_ScreenRate;
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    mode.driverdata = NULL;
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    if (SDL_AddBasicVideoDisplay(&mode) < 0) {
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        return -1;
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    }
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    SDL_AddDisplayMode(&_this->displays[0], &mode);
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    Android_InitKeyboard();
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    Android_InitTouch();
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    Android_InitMouse();
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    /* We're done! */
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    return 0;
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}
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void
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Android_VideoQuit(_THIS)
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{
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    Android_QuitTouch();
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}
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int
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Android_GetDisplayDPI(_THIS, SDL_VideoDisplay * display, float * ddpi, float * hdpi, float * vdpi)
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{
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    return Android_JNI_GetDisplayDPI(ddpi, hdpi, vdpi);
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}
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void
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Android_SetScreenResolution(int width, int height, Uint32 format, float rate)
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{
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	SDL_VideoDevice* device;
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	SDL_VideoDisplay *display;
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    Android_ScreenWidth = width;
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    Android_ScreenHeight = height;
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    Android_ScreenFormat = format;
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    Android_ScreenRate = rate;
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    /*
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      Update the resolution of the desktop mode, so that the window
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      can be properly resized. The screen resolution change can for
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      example happen when the Activity enters or exists immersive mode,
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      which can happen after VideoInit().
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    */
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    device = SDL_GetVideoDevice();
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    if (device && device->num_displays > 0)
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    {
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        display = &device->displays[0];
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        display->desktop_mode.format = Android_ScreenFormat;
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        display->desktop_mode.w = Android_ScreenWidth;
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        display->desktop_mode.h = Android_ScreenHeight;
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        display->desktop_mode.refresh_rate  = Android_ScreenRate;
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    }
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    if (Android_Window) {
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        SDL_SendWindowEvent(Android_Window, SDL_WINDOWEVENT_RESIZED, width, height);
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        /* Force the current mode to match the resize otherwise the SDL_WINDOWEVENT_RESTORED event
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         * will fall back to the old mode */
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        display = SDL_GetDisplayForWindow(Android_Window);
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        display->current_mode.format = format;
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        display->current_mode.w = width;
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        display->current_mode.h = height;
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        display->current_mode.refresh_rate = rate;
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    }
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}
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#endif /* SDL_VIDEO_DRIVER_ANDROID */
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