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