(Location) Implement stub Android location driver - will still need

a couple of functions filled in

apple/common/RAGameView.m

@@ -314,6 +314,17 @@ didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
 }
 #endif
 
+- (void)onLocationSetInterval:(int)interval_update_ms interval_update_distance:(int)interval_distance
+{
+   (void)interval_update_ms;
+
+    // Set a movement threshold for new events (in meters).
+    if (interval_distance == 0)
+       locationManager.distanceFilter = 500;
+    else
+       locationManager.distanceFilter = interval_distance;
+}
+
 - (void)onLocationInit:(int)interval_update_ms interval_update_distance:(int)interval_distance
 {
     // Create the location manager if this object does not
@@ -324,8 +335,7 @@ didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
     locationManager.delegate = self;
     locationManager.desiredAccuracy = kCLLocationAccuracyBest;
 
-    // Set a movement threshold for new events.
+	[[RAGameView get] onLocationSetInterval:interval_update_ms interval_update_distance:interval_distance];
-    locationManager.distanceFilter = 500; // meters - TODO - make configurable
 }
 
 - (void)onLocationStart
@@ -701,6 +711,13 @@ static void *apple_location_init(int interval_update_ms, int interval_distance)
 	return applelocation;
 }
 
+static void *apple_location_set_interval(void *data, int interval_update_ms, int interval_distance)
+{
+   (void)data;
+	
+	[[RAGameView get] onLocationSetInterval:interval_update_ms interval_update_distance:interval_distance];
+}
+
 static void apple_location_free(void *data)
 {
 	applelocation_t *applelocation = (applelocation_t*)data;
@@ -749,6 +766,7 @@ const location_driver_t location_apple = {
 	apple_location_stop,
 	apple_location_get_longitude,
 	apple_location_get_latitude,
+   apple_location_set_interval,
 	"apple",
 };
 #endif

driver.c

@@ -301,6 +301,7 @@ void find_next_camera_driver(void)
 #ifdef HAVE_LOCATION
 static const location_driver_t *location_drivers[] = {
 #ifdef ANDROID
+   &location_android,
 #endif
 #ifdef IOS
    &location_apple,

driver.h

@@ -377,6 +377,7 @@ typedef struct location_driver
 
    double (*get_longitude)(void *data);
    double (*get_latitude)(void *data);
+   void (*set_interval)(int interval_msecs, int interval_distance);
    const char *ident;
 } location_driver_t;
 

griffin/griffin.c

@@ -373,6 +373,11 @@ CAMERA
 LOCATION
 ============================================================ */
 #ifdef HAVE_LOCATION
+
+#if defined(ANDROID)
+#include "../location/android.c"
+#endif
+
 #endif
 
 /*============================================================

location/android.c

@@ -0,0 +1,165 @@
+/*  RetroArch - A frontend for libretro.
+ *  Copyright (C) 2010-2013 - Hans-Kristian Arntzen
+ *  Copyright (C) 2011-2013 - 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 "../driver.h"
+#include "../android/native/jni/jni_macros.h"
+
+typedef struct android_location
+{
+   jmethodID onLocationInit;
+   jmethodID onLocationFree;
+   jmethodID onLocationStart;
+   jmethodID onLocationStop;
+   jmethodID onLocationSetInterval;
+   jmethodID onLocationGetLongitude;
+   jmethodID onLocationGetLatitude;
+} androidlocation_t;
+
+static void *android_location_init(unsigned interval_ms, unsigned interval_distance)
+{
+   JNIEnv *env;
+   jclass class;
+   (void)interval_ms;
+   (void)interval_distance;
+
+   struct android_app *android_app = (struct android_app*)g_android;
+   androidlocation_t *androidlocation = (androidlocation_t*)calloc(1, sizeof(androidlocation_t));
+   if (!androidlocation)
+      return NULL;
+
+   env = jni_thread_getenv();
+   if (!env)
+      goto dealloc;
+
+   GET_OBJECT_CLASS(env, class, android_app->activity->clazz);
+   if (class == NULL)
+      goto dealloc;
+
+#if 0
+   /* TODO */
+   GET_METHOD_ID(env, androidcamera->onCameraInit, class, "onCameraInit", "()V");
+   if (!androidcamera->onCameraInit)
+      goto dealloc;
+#endif
+
+   GET_METHOD_ID(env, androidlocation->onLocationFree, class, "onLocationFree", "()V");
+   if (!androidlocation->onLocationFree)
+      goto dealloc;
+
+   GET_METHOD_ID(env, androidlocation->onLocationStart, class, "onLocationStart", "()V");
+   if (!androidlocation->onLocationStart)
+      goto dealloc;
+
+   GET_METHOD_ID(env, androidlocation->onLocationStop, class, "onLocationStop", "()V");
+   if (!androidlocation->onLocationStop)
+      goto dealloc;
+
+   /* TODO - grab method IDs for:
+    * onLocationGetLatitude
+    * onLocationGetLongitude
+    * onLocationSetInterval
+    */
+
+   CALL_VOID_METHOD(env, android_app->activity->clazz, androidlocation->onLocationInit);
+
+   return androidlocation;
+dealloc:
+   free(androidlocation);
+   return NULL;
+}
+
+static void android_location_free(void *data)
+{
+   struct android_app *android_app = (struct android_app*)g_android;
+   androidlocation_t *androidlocation = (androidlocation_t*)data;
+   JNIEnv *env = jni_thread_getenv();
+   if (!env)
+      return;
+
+   CALL_VOID_METHOD(env, android_app->activity->clazz, androidlocation->onLocationFree);
+
+   free(androidlocation);
+}
+
+static bool android_camera_start(void *data)
+{
+   struct android_app *android_app = (struct android_app*)g_android;
+   androidlocation_t *androidlocation = (androidlocation_t*)data;
+   JNIEnv *env = jni_thread_getenv();
+   if (!env)
+      return false;
+
+   CALL_VOID_METHOD(env, android_app->activity->clazz, androidlocation->onLocationStart);
+
+   return true;
+}
+
+static void android_location_stop(void *data)
+{
+   struct android_app *android_app = (struct android_app*)g_android;
+   androidlocation_t *androidlocation = (androidlocation_t*)data;
+   JNIEnv *env = jni_thread_getenv();
+   if (!env)
+      return;
+
+   CALL_VOID_METHOD(env, android_app->activity->clazz, androidlocation->onLocationStop);
+}
+
+static double android_location_get_latitude(void *data)
+{
+   struct android_app *android_app = (struct android_app*)g_android;
+   androidlocation_t *androidlocation = (androidlocation_t*)data;
+   JNIEnv *env = jni_thread_getenv();
+   if (!env)
+      return;
+
+   // TODO - CALL_DOUBLE_METHOD - onLocationGetLatitude
+   return 0.0f;
+}
+
+static double android_location_get_longitude(void *data)
+{
+   struct android_app *android_app = (struct android_app*)g_android;
+   androidlocation_t *androidlocation = (androidlocation_t*)data;
+   JNIEnv *env = jni_thread_getenv();
+   if (!env)
+      return;
+
+   // TODO - CALL_DOUBLE_METHOD - onLocationGetLongitude
+   return 0.0f;
+}
+
+static void android_location_set_interval(void *data, int interval_ms, int interval_distance)
+{
+   struct android_app *android_app = (struct android_app*)g_android;
+   androidlocation_t *androidlocation = (androidlocation_t*)data;
+   JNIEnv *env = jni_thread_getenv();
+   if (!env)
+      return;
+
+   // TODO - CALL_VOID_METHOD - onLocationSetInterval (with params)
+}
+
+const location_driver_t location_android = {
+   android_location_init,
+   android_location_free,
+   android_location_start,
+   android_location_stop,
+   android_location_get_longitude,
+   android_location_get_latitude,
+   android_location_set_interval,
+   "android",
+};

settings.c

@@ -189,12 +189,10 @@ const char *config_get_default_location(void)
 {
    switch (LOCATION_DEFAULT_DRIVER)
    {
-#if 0
       case LOCATION_ANDROID:
          return "android";
       case LOCATION_APPLE:
          return "apple";
-#endif
       default:
          return NULL;
    }