git.mutantstargoat.com Git - andemo/blob - src/android/main.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <time.h>
   4 #include <unistd.h>
   5 #include <sys/time.h>
   6 #include <EGL/egl.h>
   7 #include <GLES2/gl2.h>
   8 #include "demo.h"
   9 #include "android_native_app_glue.h"
  10 #include "logger.h"
  11 #include "demosys.h"
  12
  13 static void handle_command(struct android_app *app, int32_t cmd);
  14 static int handle_input(struct android_app *app, AInputEvent *ev);
  15 static int handle_touch_input(struct android_app *app, AInputEvent *ev);
  16 static int init_gl(void);
  17 static void destroy_gl(void);
  18 static unsigned long get_time_msec(void);
  19 static void hide_navbar(struct android_app *state);
  20
  21 struct android_app *app;
  22
  23 static EGLDisplay dpy;
  24 static EGLSurface surf;
  25 static EGLContext ctx;
  26 static int init_done, paused;
  27
  28 static int width, height;
  29
  30 static long start_time;
  31
  32
  33 void android_main(struct android_app *app_ptr)
  34 {
  35         app = app_ptr;
  36
  37         app->onAppCmd = handle_command;
  38         app->onInputEvent = handle_input;
  39
  40         hide_navbar(app);
  41
  42         start_logger();
  43
  44         for(;;) {
  45                 int num_events;
  46                 struct android_poll_source *pollsrc;
  47
  48                 while(ALooper_pollAll(0, 0, &num_events, (void**)&pollsrc) >= 0) {
  49                         if(pollsrc) {
  50                                 pollsrc->process(app, pollsrc);
  51                         }
  52                 }
  53
  54                 if(app->destroyRequested) {
  55                         return;
  56                 }
  57                 if(init_done && !paused) {
  58                         time_msec = (long)get_time_msec() - start_time;
  59                         demo_display();
  60                         eglSwapBuffers(dpy, surf);
  61                 }
  62         }
  63 }
  64
  65 void swap_buffers(void)
  66 {
  67         eglSwapBuffers(dpy, surf);
  68 }
  69
  70 static void handle_command(struct android_app *app, int32_t cmd)
  71 {
  72         int xsz, ysz;
  73
  74         switch(cmd) {
  75         case APP_CMD_PAUSE:
  76                 paused = 1;     /* TODO: handle timers */
  77                 dsys_stop();
  78                 break;
  79         case APP_CMD_RESUME:
  80                 paused = 0;
  81                 dsys_run();
  82                 break;
  83
  84         case APP_CMD_INIT_WINDOW:
  85                 if(init_gl() == -1) {
  86                         exit(1);
  87                 }
  88                 if(demo_init() == -1) {
  89                         exit(1);
  90                 }
  91                 demo_reshape(width, height);
  92                 start_time = (long)get_time_msec();
  93                 init_done = 1;
  94                 dsys_run();
  95                 break;
  96
  97         case APP_CMD_TERM_WINDOW:
  98                 init_done = 0;
  99                 demo_cleanup();
 100                 destroy_gl();
 101                 break;
 102
 103         case APP_CMD_WINDOW_RESIZED:
 104         case APP_CMD_CONFIG_CHANGED:
 105                 xsz = ANativeWindow_getWidth(app->window);
 106                 ysz = ANativeWindow_getHeight(app->window);
 107                 if(xsz != width || ysz != height) {
 108                         printf("reshape(%d, %d)\n", xsz, ysz);
 109                         demo_reshape(xsz, ysz);
 110                         width = xsz;
 111                         height = ysz;
 112                 }
 113                 break;
 114
 115         /*
 116         case APP_CMD_SAVE_STATE:
 117         case APP_CMD_GAINED_FOCUS:
 118         case APP_CMD_LOST_FOCUS:
 119         */
 120         default:
 121                 break;
 122         }
 123 }
 124
 125 static int handle_input(struct android_app *app, AInputEvent *ev)
 126 {
 127         int evtype = AInputEvent_getType(ev);
 128
 129         switch(evtype) {
 130         case AINPUT_EVENT_TYPE_MOTION:
 131                 return handle_touch_input(app, ev);
 132
 133         default:
 134                 break;
 135         }
 136         return 0;
 137 }
 138
 139 static int handle_touch_input(struct android_app *app, AInputEvent *ev)
 140 {
 141         int i, pcount, x, y, idx;
 142         unsigned int action;
 143         static int prev_pos[2];
 144
 145         action = AMotionEvent_getAction(ev);
 146
 147         idx = (action & AMOTION_EVENT_ACTION_POINTER_INDEX_MASK) >>
 148                 AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT;
 149
 150         x = AMotionEvent_getX(ev, idx);
 151         y = AMotionEvent_getY(ev, idx);
 152
 153         switch(action & AMOTION_EVENT_ACTION_MASK) {
 154         case AMOTION_EVENT_ACTION_DOWN:
 155         case AMOTION_EVENT_ACTION_POINTER_DOWN:
 156                 demo_mouse(0, 1, x, y);
 157
 158                 prev_pos[0] = x;
 159                 prev_pos[1] = y;
 160                 break;
 161
 162         case AMOTION_EVENT_ACTION_UP:
 163         case AMOTION_EVENT_ACTION_POINTER_UP:
 164                 demo_mouse(0, 0, x, y);
 165
 166                 prev_pos[0] = x;
 167                 prev_pos[1] = y;
 168                 break;
 169
 170         case AMOTION_EVENT_ACTION_MOVE:
 171                 pcount = AMotionEvent_getPointerCount(ev);
 172                 for(i=0; i<pcount; i++) {
 173                         int id = AMotionEvent_getPointerId(ev, i);
 174                         if(id == 0) {
 175                                 demo_motion(x, y);
 176                                 prev_pos[0] = x;
 177                                 prev_pos[1] = y;
 178                                 break;
 179                         }
 180                 }
 181                 break;
 182
 183         default:
 184                 break;
 185         }
 186
 187         return 1;
 188 }
 189
 190 static int init_gl(void)
 191 {
 192         static const int eglattr[] = {
 193                 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
 194                 EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
 195                 EGL_RED_SIZE, 5,
 196                 EGL_GREEN_SIZE, 5,
 197                 EGL_BLUE_SIZE, 5,
 198                 EGL_DEPTH_SIZE, 16,
 199                 EGL_NONE
 200         };
 201         static const int ctxattr[] = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE };
 202
 203         EGLConfig eglcfg;
 204         int count, vis;
 205
 206         dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
 207         if(!dpy || !eglInitialize(dpy, 0, 0)) {
 208                 fprintf(stderr, "failed to initialize EGL\n");
 209                 destroy_gl();
 210                 return -1;
 211         }
 212
 213         if(!eglChooseConfig(dpy, eglattr, &eglcfg, 1, &count)) {
 214                 fprintf(stderr, "no matching EGL config found\n");
 215                 destroy_gl();
 216                 return -1;
 217         }
 218
 219         /* configure the native window visual according to the chosen EGL config */
 220         eglGetConfigAttrib(dpy, &eglcfg, EGL_NATIVE_VISUAL_ID, &vis);
 221         ANativeWindow_setBuffersGeometry(app->window, 0, 0, vis);
 222
 223         if(!(surf = eglCreateWindowSurface(dpy, eglcfg, app->window, 0))) {
 224                 fprintf(stderr, "failed to create window\n");
 225                 destroy_gl();
 226                 return -1;
 227         }
 228
 229         if(!(ctx = eglCreateContext(dpy, eglcfg, EGL_NO_CONTEXT, ctxattr))) {
 230                 fprintf(stderr, "failed to create OpenGL ES context\n");
 231                 destroy_gl();
 232                 return -1;
 233         }
 234         eglMakeCurrent(dpy, surf, surf, ctx);
 235
 236         eglQuerySurface(dpy, surf, EGL_WIDTH, &width);
 237         eglQuerySurface(dpy, surf, EGL_HEIGHT, &height);
 238         return 0;
 239 }
 240
 241 static void destroy_gl(void)
 242 {
 243         if(!dpy) return;
 244
 245         eglMakeCurrent(dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
 246
 247         if(ctx) {
 248                 eglDestroyContext(dpy, ctx);
 249                 ctx = 0;
 250         }
 251         if(surf) {
 252                 eglDestroySurface(dpy, surf);
 253                 surf = 0;
 254         }
 255
 256         eglTerminate(dpy);
 257         dpy = 0;
 258 }
 259
 260 static unsigned long get_time_msec(void)
 261 {
 262         struct timespec ts;
 263         static struct timespec ts0;
 264
 265         clock_gettime(CLOCK_MONOTONIC, &ts);
 266         if(ts0.tv_sec == 0 && ts0.tv_nsec == 0) {
 267                 ts0 = ts;
 268                 return 0;
 269         }
 270         return (ts.tv_sec - ts0.tv_sec) * 1000 + (ts.tv_nsec - ts0.tv_nsec) / 1000000;
 271 }
 272
 273 static void hide_navbar(struct android_app *state)
 274 {
 275         JNIEnv *env;
 276         jclass cactivity, cwin, cview;
 277         jobject win, view;
 278         jmethodID get_window, get_decor_view, set_system_ui_visibility;
 279         jfieldID field_flag_fs, field_flag_hidenav, field_flag_immersive;
 280         int flag_fs, flag_hidenav, flag_immersive;
 281
 282         (*state->activity->vm)->AttachCurrentThread(state->activity->vm, &env, 0);
 283
 284         cactivity = (*env)->FindClass(env, "android/app/NativeActivity");
 285         get_window = (*env)->GetMethodID(env, cactivity, "getWindow", "()Landroid/view/Window;");
 286
 287         cwin = (*env)->FindClass(env, "android/view/Window");
 288         get_decor_view = (*env)->GetMethodID(env, cwin, "getDecorView", "()Landroid/view/View;");
 289
 290         cview = (*env)->FindClass(env, "android/view/View");
 291         set_system_ui_visibility = (*env)->GetMethodID(env, cview, "setSystemUiVisibility", "(I)V");
 292
 293         win = (*env)->CallObjectMethod(env, state->activity->clazz, get_window);
 294         view = (*env)->CallObjectMethod(env, win, get_decor_view);
 295
 296         field_flag_fs = (*env)->GetStaticFieldID(env, cview, "SYSTEM_UI_FLAG_FULLSCREEN", "I");
 297         field_flag_hidenav = (*env)->GetStaticFieldID(env, cview, "SYSTEM_UI_FLAG_HIDE_NAVIGATION", "I");
 298         field_flag_immersive = (*env)->GetStaticFieldID(env, cview, "SYSTEM_UI_FLAG_IMMERSIVE_STICKY", "I");
 299
 300         flag_fs = (*env)->GetStaticIntField(env, cview, field_flag_fs);
 301         flag_hidenav = (*env)->GetStaticIntField(env, cview, field_flag_hidenav);
 302         flag_immersive = (*env)->GetStaticIntField(env, cview, field_flag_immersive);
 303
 304         (*env)->CallVoidMethod(env, view, set_system_ui_visibility, flag_fs | flag_hidenav | flag_immersive);
 305
 306         (*state->activity->vm)->DetachCurrentThread(state->activity->vm);
 307 }