(HID) Create null_hid

Makefile.common

@@ -164,6 +164,7 @@ OBJ += frontend/frontend.o \
 		gfx/drivers/nullgfx.o \
 		audio/drivers/nullaudio.o \
 		input/drivers/nullinput.o \
+		input/drivers_hid/null_hid.o \
 		input/drivers_joypad/nullinput_joypad.o \
 		input/drivers_joypad/hid_joypad.o \
 		playlist.o \

griffin/griffin.c

@@ -343,15 +343,18 @@ INPUT
 
 #include "../input/drivers_joypad/hid_joypad.c"
 
+#include "../input/drivers_hid/null_hid.c"
+
+#ifdef HAVE_HID
+#include "../input/drivers_hid/apple_hid.c"
+#endif
+
 #if defined(__APPLE__)
 #include "../input/connect/joypad_connection.c"
 #include "../input/connect/connect_ps3.c"
 #include "../input/connect/connect_ps4.c"
 #include "../input/connect/connect_wii.c"
 
-#ifdef HAVE_HID
-#include "../input/drivers_hid/apple_hid.c"
-#endif
 
 #ifdef IOS
 #include "../apple/iOS/bluetooth/btdynamic.c"

input/drivers_hid/null_hid.c

@@ -0,0 +1,115 @@
+/*  RetroArch - A frontend for libretro.
+ *  Copyright (C) 2013-2014 - Jason Fetters
+ *  Copyright (C) 2011-2015 - 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 "../drivers/apple_input.h"
+#include "../input_hid_driver.h"
+
+typedef struct null_hid
+{
+   void *empty;
+} null_hid_t;
+
+static bool null_hid_joypad_query(void *data, unsigned pad)
+{
+   return pad < MAX_USERS;
+}
+
+static const char *null_hid_joypad_name(void *data, unsigned pad)
+{
+   /* TODO/FIXME - implement properly */
+   if (pad >= MAX_USERS)
+      return NULL;
+
+   return NULL;
+}
+
+static uint64_t null_hid_joypad_get_buttons(void *data, unsigned port)
+{
+   (void)data;
+   (void)port;
+
+   return 0;
+}
+
+static bool null_hid_joypad_button(void *data, unsigned port, uint16_t joykey)
+{
+   (void)data;
+   (void)port;
+   (void)joykey;
+
+   return false;
+}
+
+static bool null_hid_joypad_rumble(void *data, unsigned pad,
+      enum retro_rumble_effect effect, uint16_t strength)
+{
+   (void)data;
+   (void)pad;
+   (void)effect;
+   (void)strength;
+
+   return false;
+}
+
+static int16_t null_hid_joypad_axis(void *data, unsigned port, uint32_t joyaxis)
+{
+   (void)data;
+   (void)port;
+   (void)joyaxis;
+
+   return 0;
+}
+
+static void *null_hid_init(void)
+{
+   null_hid_t *hid_null = (null_hid_t*)calloc(1, sizeof(*hid_null));
+
+   if (!hid_null)
+      goto error;
+
+   return hid_null;
+
+error:
+   if (hid_null)
+      free(hid_null);
+   return hid_null;
+}
+
+static void null_hid_free(void *data)
+{
+   null_hid_t *hid_null = (null_hid_t*)data;
+
+   if (hid_null)
+      free(hid_null);
+}
+
+static void null_hid_poll(void *data)
+{
+   (void)data;
+}
+
+hid_driver_t null_hid = {
+   null_hid_init,
+   null_hid_joypad_query,
+   null_hid_free,
+   null_hid_joypad_button,
+   null_hid_joypad_get_buttons,
+   null_hid_joypad_axis,
+   null_hid_poll,
+   null_hid_joypad_rumble,
+   null_hid_joypad_name,
+   "null",
+};

input/input_hid_driver.c

@@ -26,6 +26,7 @@ static hid_driver_t *hid_drivers[] = {
 #ifdef __APPLE__
    &apple_hid,
 #endif
+   &null_hid,
    NULL,
 };
 

input/input_hid_driver.h

@@ -44,6 +44,7 @@ struct hid_driver
 };
 
 extern hid_driver_t apple_hid;
+extern hid_driver_t null_hid;
 
 /**
  * hid_driver_find_handle:

tools/retroarch-joyconfig-griffin.c

@@ -48,6 +48,7 @@
 #include "../libretro-common/compat/compat.c"
 
 #include "../input/drivers/nullinput.c"
+#include "../input/drivers_hid/null_hid.c"
 #include "../input/drivers_joypad/hid_joypad.c"
 #include "../input/drivers_joypad/nullinput_joypad.c"