RetroArch/android/native/jni/input_android.c

/*  RetroArch - A frontend for libretro.
 *  Copyright (C) 2010-2012 - Hans-Kristian Arntzen
 *  Copyright (C) 2011-2012 - Daniel De Matteis
 * 
 *  RetroArch is free software: you can redistribute it and/or modify it under the terms
 *  of the GNU General Public License as published by the Free Software Found-
 *  ation, either version 3 of the License, or (at your option) any later version.
 *
 *  RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 *  PURPOSE.  See the GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along with RetroArch.
 *  If not, see <http://www.gnu.org/licenses/>.
 */

#include <dlfcn.h>
#include "android-general.h"
#include "../../../general.h"
#include "../../../driver.h"

/* Process the next input event */
static float (*AMotionEvent_getAxisValue)(const AInputEvent* motion_event, int32_t axis, size_t pointer_index) = 0;

static int32_t engine_handle_input(struct android_app* app, AInputEvent* event)
{
   if (AInputEvent_getType(event) == AINPUT_EVENT_TYPE_MOTION)
   {
      g_android.state.x = AMotionEvent_getX(event, 0);
      g_android.state.y = AMotionEvent_getY(event, 0);
      RARCH_LOG("AINPUT_EVENT_TYPE_MOTION - x: %d, y: %d.\n");
      return 1;
   }
   return 0;
}

static void *android_input_init(void)
{
   void *libandroid = 0;

   g_android.app->onInputEvent = engine_handle_input;

   /* check if libandroid can be opened */
   if((libandroid = dlopen("/system/lib/libandroid.so", RTLD_LOCAL | RTLD_LAZY)) == 0)
   {
      RARCH_ERR("Unable to open library /system/lib/libandroid.so.\n");
      return 0;
   }

   if((AMotionEvent_getAxisValue = (float (*)(const AInputEvent*, int32_t, size_t))dlsym(libandroid, "AMotionEvent_getAxisValue")) == 0)
   {
      RARCH_ERR("AMotionEvent_getAxisValue not available on your particular Android version.\n Joystick support will be disabled.\n");
      return 0;
   }
   return (void*)-1;
}

static void android_input_poll(void *data)
{
   (void)data;
}

static int16_t android_input_state(void *data, const struct retro_keybind **retro_keybinds, unsigned port, unsigned device, unsigned index, unsigned id)
{
   (void)data;
   (void)retro_keybinds;
   (void)port;
   (void)device;
   (void)index;
   (void)id;


   return 0;
}

static bool android_input_key_pressed(void *data, int key)
{
   (void)data;
   (void)key;

   switch (key)
   {
      case RARCH_QUIT_KEY:
	if(g_android.init_quit)
           return true;
        else
           return false;
        break;
      default:
         (void)0;
   }

   return false;
}

static void android_input_free(void *data)
{
   (void)data;
}

const input_driver_t input_android = {
   android_input_init,
   android_input_poll,
   android_input_state,
   android_input_key_pressed,
   android_input_free,
   "android_input",
};