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 <android/window.h>
   9 #include "android_native_app_glue.h"
  10 #include "demo.h"
  11 #include "logger.h"
  12 #include "demosys.h"
  13
  14 static void handle_command(struct android_app *app, int32_t cmd);
  15 static int handle_input(struct android_app *app, AInputEvent *ev);
  16 static int handle_touch_input(struct android_app *app, AInputEvent *ev);
  17 static int init_gl(void);
  18 static void destroy_gl(void);
  19 static unsigned long get_time_msec(void);
  20 static void hide_navbar(struct android_app *state);
  21
  22 struct android_app *app;
  23
  24 static EGLDisplay dpy;
  25 static EGLSurface surf;
  26 static EGLContext ctx;
  27 static int init_done, paused;
  28
  29 static int width, height;
  30
  31 static long start_time;
  32
  33
  34 void android_main(struct android_app *app_ptr)
  35 {
  36         app = app_ptr;
  37
  38         app->onAppCmd = handle_command;
  39         app->onInputEvent = handle_input;
  40
  41         hide_navbar(app);
  42
  43         start_logger();
  44
  45         for(;;) {
  46                 int num_events;
  47                 struct android_poll_source *pollsrc;
  48
  49                 while(ALooper_pollAll(0, 0, &num_events, (void**)&pollsrc) >= 0) {
  50                         if(pollsrc) {
  51                                 pollsrc->process(app, pollsrc);
  52                         }
  53                 }
  54
  55                 if(app->destroyRequested) {
  56                         return;
  57                 }
  58                 if(init_done && !paused) {
  59                         time_msec = (long)get_time_msec() - start_time;
  60                         demo_display();
  61                         eglSwapBuffers(dpy, surf);
  62                 }
  63         }
  64 }
  65
  66 void swap_buffers(void)
  67 {
  68         eglSwapBuffers(dpy, surf);
  69 }
  70
  71 static void handle_command(struct android_app *app, int32_t cmd)
  72 {
  73         int xsz, ysz;
  74
  75         switch(cmd) {
  76         case APP_CMD_PAUSE:
  77                 paused = 1;     /* TODO: handle timers */
  78                 dsys_stop();
  79                 break;
  80         case APP_CMD_RESUME:
  81                 paused = 0;
  82                 dsys_run();
  83                 break;
  84
  85         case APP_CMD_INIT_WINDOW:
  86                 ANativeActivity_setWindowFlags(app->activity, AWINDOW_FLAG_KEEP_SCREEN_ON, 0);
  87                 if(init_gl() == -1) {
  88                         exit(1);
  89                 }
  90                 if(demo_init() == -1) {
  91                         exit(1);
  92                 }
  93                 demo_reshape(width, height);
  94                 start_time = (long)get_time_msec();
  95                 init_done = 1;
  96                 dsys_run();
  97                 break;
  98
  99         case APP_CMD_TERM_WINDOW:
 100                 init_done = 0;
 101                 demo_cleanup();
 102                 destroy_gl();
 103                 break;
 104
 105         case APP_CMD_WINDOW_RESIZED:
 106         case APP_CMD_CONFIG_CHANGED:
 107                 xsz = ANativeWindow_getWidth(app->window);
 108                 ysz = ANativeWindow_getHeight(app->window);
 109                 if(xsz != width || ysz != height) {
 110                         printf("reshape(%d, %d)\n", xsz, ysz);
 111                         demo_reshape(xsz, ysz);
 112                         width = xsz;
 113                         height = ysz;
 114                 }
 115                 break;
 116
 117         /*
 118         case APP_CMD_SAVE_STATE:
 119         case APP_CMD_GAINED_FOCUS:
 120         case APP_CMD_LOST_FOCUS:
 121         */
 122         default:
 123                 break;
 124         }
 125 }
 126
 127 static int handle_input(struct android_app *app, AInputEvent *ev)
 128 {
 129         int evtype = AInputEvent_getType(ev);
 130
 131         switch(evtype) {
 132         case AINPUT_EVENT_TYPE_MOTION:
 133                 return handle_touch_input(app, ev);
 134
 135         default:
 136                 break;
 137         }
 138         return 0;
 139 }
 140
 141 static int handle_touch_input(struct android_app *app, AInputEvent *ev)
 142 {
 143         int i, pcount, x, y, idx;
 144         unsigned int action;
 145         static int prev_pos[2];
 146
 147         action = AMotionEvent_getAction(ev);
 148
 149         idx = (action & AMOTION_EVENT_ACTION_POINTER_INDEX_MASK) >>
 150                 AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT;
 151
 152         x = AMotionEvent_getX(ev, idx);
 153         y = AMotionEvent_getY(ev, idx);
 154
 155         switch(action & AMOTION_EVENT_ACTION_MASK) {
 156         case AMOTION_EVENT_ACTION_DOWN:
 157         case AMOTION_EVENT_ACTION_POINTER_DOWN:
 158                 demo_mouse(0, 1, x, y);
 159
 160                 prev_pos[0] = x;
 161                 prev_pos[1] = y;
 162                 break;
 163
 164         case AMOTION_EVENT_ACTION_UP:
 165         case AMOTION_EVENT_ACTION_POINTER_UP:
 166                 demo_mouse(0, 0, x, y);
 167
 168                 prev_pos[0] = x;
 169                 prev_pos[1] = y;
 170                 break;
 171
 172         case AMOTION_EVENT_ACTION_MOVE:
 173                 pcount = AMotionEvent_getPointerCount(ev);
 174                 for(i=0; i<pcount; i++) {
 175                         int id = AMotionEvent_getPointerId(ev, i);
 176                         if(id == 0) {
 177                                 demo_motion(x, y);
 178                                 prev_pos[0] = x;
 179                                 prev_pos[1] = y;
 180                                 break;
 181                         }
 182                 }
 183                 break;
 184
 185         default:
 186                 break;
 187         }
 188
 189         return 1;
 190 }
 191
 192 static int init_gl(void)
 193 {
 194         static const int eglattr[] = {
 195                 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
 196                 EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
 197                 EGL_RED_SIZE, 5,
 198                 EGL_GREEN_SIZE, 5,
 199                 EGL_BLUE_SIZE, 5,
 200                 EGL_DEPTH_SIZE, 16,
 201                 EGL_NONE
 202         };
 203         static const int ctxattr[] = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE };
 204
 205         EGLConfig eglcfg;
 206         int count, vis;
 207
 208         dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
 209         if(!dpy || !eglInitialize(dpy, 0, 0)) {
 210                 fprintf(stderr, "failed to initialize EGL\n");
 211                 destroy_gl();
 212                 return -1;
 213         }
 214
 215         if(!eglChooseConfig(dpy, eglattr, &eglcfg, 1, &count)) {
 216                 fprintf(stderr, "no matching EGL config found\n");
 217                 destroy_gl();
 218                 return -1;
 219         }
 220
 221         /* configure the native window visual according to the chosen EGL config */
 222         eglGetConfigAttrib(dpy, &eglcfg, EGL_NATIVE_VISUAL_ID, &vis);
 223         ANativeWindow_setBuffersGeometry(app->window, 0, 0, vis);
 224
 225         if(!(surf = eglCreateWindowSurface(dpy, eglcfg, app->window, 0))) {
 226                 fprintf(stderr, "failed to create window\n");
 227                 destroy_gl();
 228                 return -1;
 229         }
 230
 231         if(!(ctx = eglCreateContext(dpy, eglcfg, EGL_NO_CONTEXT, ctxattr))) {
 232                 fprintf(stderr, "failed to create OpenGL ES context\n");
 233                 destroy_gl();
 234                 return -1;
 235         }
 236         eglMakeCurrent(dpy, surf, surf, ctx);
 237
 238         eglQuerySurface(dpy, surf, EGL_WIDTH, &width);
 239         eglQuerySurface(dpy, surf, EGL_HEIGHT, &height);
 240         return 0;
 241 }
 242
 243 static void destroy_gl(void)
 244 {
 245         if(!dpy) return;
 246
 247         eglMakeCurrent(dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
 248
 249         if(ctx) {
 250                 eglDestroyContext(dpy, ctx);
 251                 ctx = 0;
 252         }
 253         if(surf) {
 254                 eglDestroySurface(dpy, surf);
 255                 surf = 0;
 256         }
 257
 258         eglTerminate(dpy);
 259         dpy = 0;
 260 }
 261
 262 static unsigned long get_time_msec(void)
 263 {
 264         struct timespec ts;
 265         static struct timespec ts0;
 266
 267         clock_gettime(CLOCK_MONOTONIC, &ts);
 268         if(ts0.tv_sec == 0 && ts0.tv_nsec == 0) {
 269                 ts0 = ts;
 270                 return 0;
 271         }
 272         return (ts.tv_sec - ts0.tv_sec) * 1000 + (ts.tv_nsec - ts0.tv_nsec) / 1000000;
 273 }
 274
 275 static void hide_navbar(struct android_app *state)
 276 {
 277         JNIEnv *env;
 278         jclass cactivity, cwin, cview;
 279         jobject win, view;
 280         jmethodID get_window, get_decor_view, set_system_ui_visibility;
 281         jfieldID field_flag_fs, field_flag_hidenav, field_flag_immersive;
 282         int flag_fs, flag_hidenav, flag_immersive;
 283
 284         (*state->activity->vm)->AttachCurrentThread(state->activity->vm, &env, 0);
 285
 286         cactivity = (*env)->FindClass(env, "android/app/NativeActivity");
 287         get_window = (*env)->GetMethodID(env, cactivity, "getWindow", "()Landroid/view/Window;");
 288
 289         cwin = (*env)->FindClass(env, "android/view/Window");
 290         get_decor_view = (*env)->GetMethodID(env, cwin, "getDecorView", "()Landroid/view/View;");
 291
 292         cview = (*env)->FindClass(env, "android/view/View");
 293         set_system_ui_visibility = (*env)->GetMethodID(env, cview, "setSystemUiVisibility", "(I)V");
 294
 295         win = (*env)->CallObjectMethod(env, state->activity->clazz, get_window);
 296         view = (*env)->CallObjectMethod(env, win, get_decor_view);
 297
 298         field_flag_fs = (*env)->GetStaticFieldID(env, cview, "SYSTEM_UI_FLAG_FULLSCREEN", "I");
 299         field_flag_hidenav = (*env)->GetStaticFieldID(env, cview, "SYSTEM_UI_FLAG_HIDE_NAVIGATION", "I");
 300         field_flag_immersive = (*env)->GetStaticFieldID(env, cview, "SYSTEM_UI_FLAG_IMMERSIVE_STICKY", "I");
 301
 302         flag_fs = (*env)->GetStaticIntField(env, cview, field_flag_fs);
 303         flag_hidenav = (*env)->GetStaticIntField(env, cview, field_flag_hidenav);
 304         flag_immersive = (*env)->GetStaticIntField(env, cview, field_flag_immersive);
 305
 306         (*env)->CallVoidMethod(env, view, set_system_ui_visibility, flag_fs | flag_hidenav | flag_immersive);
 307
 308         (*state->activity->vm)->DetachCurrentThread(state->activity->vm);
 309 }