RetroArch/frontend/menu/backend/menu_common_backend.c

/*  RetroArch - A frontend for libretro.
 *  Copyright (C) 2010-2014 - Hans-Kristian Arntzen
 *  Copyright (C) 2011-2014 - 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 <stdint.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <ctype.h>
#include "menu_common_backend.h"
#include "../menu_entries.h"
#include "../menu_navigation.h"
#include "../menu_input_line_cb.h"

#include "../../../gfx/gfx_common.h"
#include "../../../gfx/shader_common.h"
#include "../../../driver.h"
#include "../../../file_ext.h"
#include "../../../input/input_common.h"
#include "../../../config.def.h"
#include "../../../input/keyboard_line.h"

#include "../../../settings_data.h"

#if defined(HAVE_CG) || defined(HAVE_HLSL) || defined(HAVE_GLSL)
#define HAVE_SHADER_MANAGER
#endif

static void *get_last_setting(const file_list_t *list, int index,
      rarch_setting_t *settings)
{
   if (settings)
      return (rarch_setting_t*)setting_data_find_setting(settings,
            list->list[index].label);
   return NULL;
}

static int menu_info_screen_iterate(unsigned action)
{
   char msg[PATH_MAX];
   rarch_setting_t *current_setting = NULL;
   rarch_setting_t *setting_data = (rarch_setting_t *)setting_data_get_list();

   if (!driver.menu || !setting_data)
      return 0;

   if (driver.video_data && driver.menu_ctx && driver.menu_ctx->render)
      driver.menu_ctx->render();

   current_setting = (rarch_setting_t*)get_last_setting(
         driver.menu->selection_buf,
         driver.menu->selection_ptr,
         setting_data_get_list());

   if (current_setting)
      setting_data_get_description(current_setting, msg, sizeof(msg));
   else
   {
      current_setting = (rarch_setting_t*)get_last_setting(
            driver.menu->selection_buf,
            driver.menu->selection_ptr,
            setting_data_get_mainmenu(true));

      if (current_setting)
         setting_data_get_description(current_setting, msg, sizeof(msg));
      else
      {
         switch (driver.menu->info_selection)
         {
            case MENU_SETTINGS_SHADER_PRESET:
               snprintf(msg, sizeof(msg),
                     " -- Load Shader Preset. \n"
                     " \n"
                     " Load a "
#ifdef HAVE_CG
                     "Cg"
#endif
#ifdef HAVE_GLSL
#ifdef HAVE_CG
                     "/"
#endif
                     "GLSL"
#endif
#ifdef HAVE_HLSL
#if defined(HAVE_CG) || defined(HAVE_HLSL)
                     "/"
#endif
                     "HLSL"
#endif
                     " preset directly. \n"
                     "The menu shader menu is updated accordingly. \n"
                     " \n"
                     "If the CGP uses scaling methods which are not \n"
                     "simple, (i.e. source scaling, same scaling \n"
                     "factor for X/Y), the scaling factor displayed \n"
                     "in the menu might not be correct."
                     );
               break;
            case MENU_SETTINGS_SHADER_APPLY:
               snprintf(msg, sizeof(msg),
                     " -- Apply Shader Changes. \n"
                     " \n"
                     "After changing shader settings, use this to \n"
                     "apply changes. \n"
                     " \n"
                     "Changing shader settings is a somewhat \n"
                     "expensive operation so it has to be \n"
                     "done explicitly. \n"
                     " \n"
                     "When you apply shaders, the menu shader \n"
                     "settings are saved to a temporary file (either \n"
                     "menu.cgp or menu.glslp) and loaded. The file \n"
                     "persists after RetroArch exits. The file is \n"
                     "saved to Shader Directory."
                     );
               break;
            case MENU_SETTINGS_SHADER_PASSES:
               snprintf(msg, sizeof(msg),
                     " -- Shader Passes. \n"
                     " \n"
                     "RetroArch allows you to mix and match various \n"
                     "shaders with arbitrary shader passes, with \n"
                     "custom hardware filters and scale factors. \n"
                     " \n"
                     "This option specifies the number of shader \n"
                     "passes to use. If you set this to 0, and use \n"
                     "Apply Shader Changes, you use a 'blank' shader. \n"
                     " \n"
                     "The Default Filter option will affect the \n"
                     "stretching filter.");
               break;
            case MENU_SETTINGS_BIND_DEVICE:
               snprintf(msg, sizeof(msg),
                     " -- Input Device. \n"
                     " \n"
                     "Picks which gamepad to use for player N. \n"
                     "The name of the pad is available."
                     );
               break;
            case MENU_SETTINGS_BIND_DEVICE_TYPE:
               snprintf(msg, sizeof(msg),
                     " -- Input Device Type. \n"
                     " \n"
                     "Picks which device type to use. This is \n"
                     "relevant for the libretro core itself."
                     );
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_ANALOG_LEFT_X_PLUS:
            case MENU_SETTINGS_BIND_BEGIN + RARCH_ANALOG_LEFT_X_MINUS:
            case MENU_SETTINGS_BIND_BEGIN + RARCH_ANALOG_LEFT_Y_PLUS:
            case MENU_SETTINGS_BIND_BEGIN + RARCH_ANALOG_LEFT_Y_MINUS:
            case MENU_SETTINGS_BIND_BEGIN + RARCH_ANALOG_RIGHT_X_PLUS:
            case MENU_SETTINGS_BIND_BEGIN + RARCH_ANALOG_RIGHT_X_MINUS:
            case MENU_SETTINGS_BIND_BEGIN + RARCH_ANALOG_RIGHT_Y_PLUS:
            case MENU_SETTINGS_BIND_BEGIN + RARCH_ANALOG_RIGHT_Y_MINUS:
               snprintf(msg, sizeof(msg),
                     " -- Axis for analog stick (DualShock-esque).\n"
                     " \n"
                     "Bound as usual, however, if a real analog \n"
                     "axis is bound, it can be read as a true analog.\n"
                     " \n"
                     "Positive X axis is right. \n"
                     "Positive Y axis is down.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_SHADER_NEXT:
               snprintf(msg, sizeof(msg),
                     " -- Applies next shader in directory.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_SHADER_PREV:
               snprintf(msg, sizeof(msg),
                     " -- Applies previous shader in directory.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_LOAD_STATE_KEY:
               snprintf(msg, sizeof(msg),
                     " -- Loads state.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_SAVE_STATE_KEY:
               snprintf(msg, sizeof(msg),
                     " -- Saves state.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_STATE_SLOT_PLUS:
            case MENU_SETTINGS_BIND_BEGIN + RARCH_STATE_SLOT_MINUS:
               snprintf(msg, sizeof(msg),
                     " -- State slots.\n"
                     " \n"
                     " With slot set to 0, save state name is *.state \n"
                     " (or whatever defined on commandline).\n"
                     "When slot is != 0, path will be (path)(d), \n"
                     "where (d) is slot number.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_TURBO_ENABLE:
               snprintf(msg, sizeof(msg),
                     " -- Turbo enable.\n"
                     " \n"
                     "Holding the turbo while pressing another \n"
                     "button will let the button enter a turbo \n"
                     "mode where the button state is modulated \n"
                     "with a periodic signal. \n"
                     " \n"
                     "The modulation stops when the button \n"
                     "itself (not turbo button) is released.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_FAST_FORWARD_HOLD_KEY:
               snprintf(msg, sizeof(msg),
                     " -- Hold for fast-forward. Releasing button \n"
                     "disables fast-forward.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_QUIT_KEY:
               snprintf(msg, sizeof(msg),
                     " -- Key to exit RetroArch cleanly."
#if !defined(RARCH_MOBILE) && !defined(RARCH_CONSOLE)
                     "\nKilling it in any hard way (SIGKILL, \n"
                     "etc) will terminate without saving\n"
                     "RAM, etc. On Unix-likes,\n"
                     "SIGINT/SIGTERM allows\n"
                     "a clean deinitialization."
#endif
                     );
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_REWIND:
               snprintf(msg, sizeof(msg),
                     " -- Hold button down to rewind.\n"
                     " \n"
                     "Rewind must be enabled.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_MOVIE_RECORD_TOGGLE:
               snprintf(msg, sizeof(msg),
                     " -- Toggle between recording and not.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_PAUSE_TOGGLE:
               snprintf(msg, sizeof(msg),
                     " -- Toggle between paused and non-paused state.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_FRAMEADVANCE:
               snprintf(msg, sizeof(msg),
                     " -- Frame advance when content is paused.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_RESET:
               snprintf(msg, sizeof(msg),
                     " -- Reset the content.\n");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_CHEAT_INDEX_PLUS:
               snprintf(msg, sizeof(msg),
                     " -- Increment cheat index.\n");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_CHEAT_INDEX_MINUS:
               snprintf(msg, sizeof(msg),
                     " -- Decrement cheat index.\n");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_CHEAT_TOGGLE:
               snprintf(msg, sizeof(msg),
                     " -- Toggle cheat index.\n");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_SCREENSHOT:
               snprintf(msg, sizeof(msg),
                     " -- Take screenshot.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_MUTE:
               snprintf(msg, sizeof(msg),
                     " -- Mute/unmute audio.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_NETPLAY_FLIP:
               snprintf(msg, sizeof(msg),
                     " -- Netplay flip players.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_SLOWMOTION:
               snprintf(msg, sizeof(msg),
                     " -- Hold for slowmotion.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_ENABLE_HOTKEY:
               snprintf(msg, sizeof(msg),
                     " -- Enable other hotkeys.\n"
                     " \n"
                     " If this hotkey is bound to either keyboard, \n"
                     "joybutton or joyaxis, all other hotkeys will \n"
                     "be disabled unless this hotkey is also held \n"
                     "at the same time. \n"
                     " \n"
                     "This is useful for RETRO_KEYBOARD centric \n"
                     "implementations which query a large area of \n"
                     "the keyboard, where it is not desirable that \n"
                     "hotkeys get in the way.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_VOLUME_UP:
               snprintf(msg, sizeof(msg),
                     " -- Increases audio volume.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_VOLUME_DOWN:
               snprintf(msg, sizeof(msg),
                     " -- Decreases audio volume.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_OVERLAY_NEXT:
               snprintf(msg, sizeof(msg),
                     " -- Toggles to next overlay.\n"
                     " \n"
                     "Wraps around.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_DISK_EJECT_TOGGLE:
               snprintf(msg, sizeof(msg),
                     " -- Toggles eject for disks.\n"
                     " \n"
                     "Used for multiple-disk content.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_DISK_NEXT:
               snprintf(msg, sizeof(msg),
                     " -- Cycles through disk images. Use after \n"
                     "ejecting. \n"
                     " \n"
                     " Complete by toggling eject again.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_GRAB_MOUSE_TOGGLE:
               snprintf(msg, sizeof(msg),
                     " -- Toggles mouse grab.\n"
                     " \n"
                     "When mouse is grabbed, RetroArch hides the \n"
                     "mouse, and keeps the mouse pointer inside \n"
                     "the window to allow relative mouse input to \n"
                     "work better.");
               break;
            case MENU_SETTINGS_BIND_BEGIN + RARCH_MENU_TOGGLE:
               snprintf(msg, sizeof(msg),
                     " -- Toggles menu.");
               break;
            case MENU_SETTINGS_SHADER_0_FILTER + (0 * 3):
            case MENU_SETTINGS_SHADER_0_FILTER + (1 * 3):
            case MENU_SETTINGS_SHADER_0_FILTER + (2 * 3):
            case MENU_SETTINGS_SHADER_0_FILTER + (3 * 3):
            case MENU_SETTINGS_SHADER_0_FILTER + (4 * 3):
            case MENU_SETTINGS_SHADER_0_FILTER + (5 * 3):
            case MENU_SETTINGS_SHADER_0_FILTER + (6 * 3):
            case MENU_SETTINGS_SHADER_0_FILTER + (7 * 3):
            case MENU_SETTINGS_SHADER_0_FILTER + (8 * 3):
            case MENU_SETTINGS_SHADER_0_FILTER + (9 * 3):
            case MENU_SETTINGS_SHADER_0_FILTER + (10 * 3):
            case MENU_SETTINGS_SHADER_0_FILTER + (11 * 3):
            case MENU_SETTINGS_SHADER_0_FILTER + (12 * 3):
            case MENU_SETTINGS_SHADER_0_FILTER + (13 * 3):
            case MENU_SETTINGS_SHADER_0_FILTER + (14 * 3):
            case MENU_SETTINGS_SHADER_0_FILTER + (15 * 3):
               snprintf(msg, sizeof(msg),
                     " -- Hardware filter for this pass. \n"
                     " \n"
                     "If 'Don't Care' is set, 'Default \n"
                     "Filter' will be used."
                     );
               break;
            case MENU_SETTINGS_SHADER_0 + (0 * 3):
            case MENU_SETTINGS_SHADER_0 + (1 * 3):
            case MENU_SETTINGS_SHADER_0 + (2 * 3):
            case MENU_SETTINGS_SHADER_0 + (3 * 3):
            case MENU_SETTINGS_SHADER_0 + (4 * 3):
            case MENU_SETTINGS_SHADER_0 + (5 * 3):
            case MENU_SETTINGS_SHADER_0 + (6 * 3):
            case MENU_SETTINGS_SHADER_0 + (7 * 3):
            case MENU_SETTINGS_SHADER_0 + (8 * 3):
            case MENU_SETTINGS_SHADER_0 + (9 * 3):
            case MENU_SETTINGS_SHADER_0 + (10 * 3):
            case MENU_SETTINGS_SHADER_0 + (11 * 3):
            case MENU_SETTINGS_SHADER_0 + (12 * 3):
            case MENU_SETTINGS_SHADER_0 + (13 * 3):
            case MENU_SETTINGS_SHADER_0 + (14 * 3):
            case MENU_SETTINGS_SHADER_0 + (15 * 3):
               snprintf(msg, sizeof(msg),
                     " -- Path to shader. \n"
                     " \n"
                     "All shaders must be of the same \n"
                     "type (i.e. CG, GLSL or HLSL). \n"
                     " \n"
                     "Set Shader Directory to set where \n"
                     "the browser starts to look for \n"
                     "shaders."
                     );
               break;
            case MENU_SETTINGS_SHADER_0_SCALE + (0 * 3):
            case MENU_SETTINGS_SHADER_0_SCALE + (1 * 3):
            case MENU_SETTINGS_SHADER_0_SCALE + (2 * 3):
            case MENU_SETTINGS_SHADER_0_SCALE + (3 * 3):
            case MENU_SETTINGS_SHADER_0_SCALE + (4 * 3):
            case MENU_SETTINGS_SHADER_0_SCALE + (5 * 3):
            case MENU_SETTINGS_SHADER_0_SCALE + (6 * 3):
            case MENU_SETTINGS_SHADER_0_SCALE + (7 * 3):
            case MENU_SETTINGS_SHADER_0_SCALE + (8 * 3):
            case MENU_SETTINGS_SHADER_0_SCALE + (9 * 3):
            case MENU_SETTINGS_SHADER_0_SCALE + (10 * 3):
            case MENU_SETTINGS_SHADER_0_SCALE + (11 * 3):
            case MENU_SETTINGS_SHADER_0_SCALE + (12 * 3):
            case MENU_SETTINGS_SHADER_0_SCALE + (13 * 3):
            case MENU_SETTINGS_SHADER_0_SCALE + (14 * 3):
            case MENU_SETTINGS_SHADER_0_SCALE + (15 * 3):
               snprintf(msg, sizeof(msg),
                     " -- Scale for this pass. \n"
                     " \n"
                     "The scale factor accumulates, i.e. 2x \n"
                     "for first pass and 2x for second pass \n"
                     "will give you a 4x total scale. \n"
                     " \n"
                     "If there is a scale factor for last \n"
                     "pass, the result is stretched to \n"
                     "screen with the filter specified in \n"
                     "'Default Filter'. \n"
                     " \n"
                     "If 'Don't Care' is set, either 1x \n"
                     "scale or stretch to fullscreen will \n"
                     "be used depending if it's not the last \n"
                     "pass or not."
                     );
               break;
            default:
               snprintf(msg, sizeof(msg),
                     "-- No info on this item available. --\n");
         }
      }
   }

   if (driver.video_data && driver.menu_ctx &&
         driver.menu_ctx->render_messagebox)
   {
      if (*msg && msg[0] != '\0')
         driver.menu_ctx->render_messagebox(msg);
   }

   if (action == MENU_ACTION_OK)
      menu_entries_pop();

   return 0;
}

static int menu_start_screen_iterate(unsigned action)
{
   unsigned i;
   char msg[1024];

   if (!driver.menu)
      return 0;

   if (driver.video_data && driver.menu_ctx && driver.menu_ctx->render)
      driver.menu_ctx->render();

   static const unsigned binds[] = {
      RETRO_DEVICE_ID_JOYPAD_UP,
      RETRO_DEVICE_ID_JOYPAD_DOWN,
      RETRO_DEVICE_ID_JOYPAD_A,
      RETRO_DEVICE_ID_JOYPAD_B,
      RETRO_DEVICE_ID_JOYPAD_SELECT,
      RARCH_MENU_TOGGLE,
      RARCH_QUIT_KEY,
   };
   char desc[ARRAY_SIZE(binds)][64];

   for (i = 0; i < ARRAY_SIZE(binds); i++)
   {
      const struct retro_keybind *bind = (const struct retro_keybind*)
         &g_settings.input.binds[0][binds[i]];
      const struct retro_keybind *auto_bind = (const struct retro_keybind*)
         input_get_auto_bind(0, binds[i]);

      input_get_bind_string(desc[i], bind, auto_bind, sizeof(desc[i]));
   }

   snprintf(msg, sizeof(msg),
         "-- Welcome to RetroArch --\n"
         " \n" // strtok_r doesn't split empty strings.

         "Basic Menu controls:\n"
         "    Scroll (Up): %-20s\n"
         "  Scroll (Down): %-20s\n"
         "      Accept/OK: %-20s\n"
         "           Back: %-20s\n"
         "           Info: %-20s\n"
         "Enter/Exit Menu: %-20s\n"
         " Exit RetroArch: %-20s\n"
         " \n"

         "To run content:\n"
         "Load a libretro core (Core).\n"
         "Load a content file (Load Content).     \n"
         " \n"

         "See Path Options to set directories\n"
         "for faster access to files.\n"
         " \n"

         "Press Accept/OK to continue.",
         desc[0], desc[1], desc[2], desc[3], desc[4], desc[5], desc[6]);

   if (driver.video_data && driver.menu_ctx && driver.menu_ctx->render_messagebox)
      driver.menu_ctx->render_messagebox(msg);

   if (action == MENU_ACTION_OK)
      menu_entries_pop();

   return 0;
}

static int menu_common_core_setting_toggle(unsigned setting, unsigned action)
{
   unsigned index = setting - MENU_SETTINGS_CORE_OPTION_START;

   switch (action)
   {
      case MENU_ACTION_LEFT:
         core_option_prev(g_extern.system.core_options, index);
         break;

      case MENU_ACTION_RIGHT:
      case MENU_ACTION_OK:
         core_option_next(g_extern.system.core_options, index);
         break;

      case MENU_ACTION_START:
         core_option_set_default(g_extern.system.core_options, index);
         break;

      default:
         break;
   }

   return 0;
}

static void defer_decision_automatic(void)
{
   if (driver.menu)
   {
      menu_flush_stack_type(MENU_SETTINGS);
      driver.menu->msg_force = true;
   }
}

static void defer_decision_manual(void)
{
   if (driver.menu)
      menu_entries_push(driver.menu->menu_stack,
            g_settings.libretro_directory, "deferred_core_list",
            MENU_SETTINGS_DEFERRED_CORE, driver.menu->selection_ptr);
}

static int menu_common_setting_set_perf(unsigned setting, unsigned action,
      struct retro_perf_counter **counters, unsigned offset)
{
   if (counters[offset] && action == MENU_ACTION_START)
   {
      counters[offset]->total = 0;
      counters[offset]->call_cnt = 0;
   }
   return 0;
}

static void menu_common_setting_set_current_boolean(
      rarch_setting_t *setting, unsigned action)
{
   if (
         !strcmp(setting->name, "savestate") ||
         !strcmp(setting->name, "loadstate"))
   {
      if (action == MENU_ACTION_START)
         g_settings.state_slot = 0;
      else if (action == MENU_ACTION_LEFT)
      {
         // Slot -1 is (auto) slot.
         if (g_settings.state_slot >= 0)
            g_settings.state_slot--;
      }
      else if (action == MENU_ACTION_RIGHT)
         g_settings.state_slot++;
      else if (action == MENU_ACTION_OK)
         *setting->value.boolean = !(*setting->value.boolean);
   }
   else
   {
      switch (action)
      {
         case MENU_ACTION_OK:
         case MENU_ACTION_LEFT:
         case MENU_ACTION_RIGHT:
            *setting->value.boolean = !(*setting->value.boolean);
            break;
         case MENU_ACTION_START:
            *setting->value.boolean = setting->default_value.boolean;
            break;
      }
   }

   if (setting->change_handler)
      setting->change_handler(setting);
}

static void menu_common_setting_set_current_path_selection(
      rarch_setting_t *setting, const char *start_path, unsigned type,
      unsigned action)
{
   switch (action)
   {
      case MENU_ACTION_OK:
         menu_entries_push(driver.menu->menu_stack,
               start_path, "path_list", type,
               driver.menu->selection_ptr);
         break;
      case MENU_ACTION_START:
         *setting->value.string = '\0';
         break;
   }

   if (setting->change_handler)
      setting->change_handler(setting);
}

static void menu_common_setting_set_current_fraction(
      rarch_setting_t *setting, unsigned action)
{
   if (!strcmp(setting->name, "video_refresh_rate_auto"))
   {
      if (action == MENU_ACTION_START)
         g_extern.measure_data.frame_time_samples_count = 0;
      else if (action == MENU_ACTION_OK)
      {
         double refresh_rate, deviation = 0.0;
         unsigned sample_points = 0;

         if (driver_monitor_fps_statistics(&refresh_rate,
                  &deviation, &sample_points))
         {
            driver_set_monitor_refresh_rate(refresh_rate);
            /* Incase refresh rate update forced non-block video. */
            rarch_main_command(RARCH_CMD_VIDEO_SET_BLOCKING_STATE);
         }
      }
   }
   else if (!strcmp(setting->name, "fastforward_ratio"))
   {
      bool clamp_value = false;
      if (action == MENU_ACTION_START)
        *setting->value.fraction  = setting->default_value.fraction;
      else if (action == MENU_ACTION_LEFT)
      {
         *setting->value.fraction -= setting->step;

         /* Avoid potential rounding errors when going from 1.1 to 1.0. */
         if (*setting->value.fraction < 0.95f) 
            *setting->value.fraction = setting->default_value.fraction;
         else
            clamp_value = true;
      }
      else if (action == MENU_ACTION_RIGHT)
      {
         *setting->value.fraction += setting->step;
         clamp_value = true;
      }
      if (clamp_value)
         g_settings.fastforward_ratio =
            max(min(*setting->value.fraction, setting->max), 1.0f);
   }
   else
   {
      switch (action)
      {
         case MENU_ACTION_LEFT:
            *setting->value.fraction =
               *setting->value.fraction - setting->step;

            if (setting->enforce_minrange)
            {
               if (*setting->value.fraction < setting->min)
                  *setting->value.fraction = setting->min;
            }
            break;

         case MENU_ACTION_RIGHT:
         case MENU_ACTION_OK:
            *setting->value.fraction = 
               *setting->value.fraction + setting->step;

            if (setting->enforce_maxrange)
            {
               if (*setting->value.fraction > setting->max)
                  *setting->value.fraction = setting->max;
            }
            break;

         case MENU_ACTION_START:
            *setting->value.fraction = setting->default_value.fraction;
            break;
      }
   }

   if (setting->change_handler)
      setting->change_handler(setting);
}

static void menu_common_setting_set_current_unsigned_integer(
      rarch_setting_t *setting, unsigned action)
{
   if (!strcmp(setting->name, "netplay_tcp_udp_port"))
   {
      if (action == MENU_ACTION_OK)
         menu_key_start_line(driver.menu, "TCP/UDP Port: ",
               setting->name, st_uint_callback);
      else if (action == MENU_ACTION_START)
         *setting->value.unsigned_integer =
            setting->default_value.unsigned_integer;
   }
   else
   {
      switch (action)
      {
         case MENU_ACTION_LEFT:
            if (*setting->value.unsigned_integer != setting->min)
               *setting->value.unsigned_integer =
                  *setting->value.unsigned_integer - setting->step;

            if (setting->enforce_minrange)
            {
               if (*setting->value.unsigned_integer < setting->min)
                  *setting->value.unsigned_integer = setting->min;
            }
            break;

         case MENU_ACTION_RIGHT:
         case MENU_ACTION_OK:
            *setting->value.unsigned_integer =
               *setting->value.unsigned_integer + setting->step;

            if (setting->enforce_maxrange)
            {
               if (*setting->value.unsigned_integer > setting->max)
                  *setting->value.unsigned_integer = setting->max;
            }
            break;

         case MENU_ACTION_START:
            *setting->value.unsigned_integer =
               setting->default_value.unsigned_integer;
            break;
      }
   } 

   if (setting->change_handler)
      setting->change_handler(setting);
}


static void menu_common_setting_set_current_string_path(
      rarch_setting_t *setting, const char *dir, const char *path)
{
   fill_pathname_join(setting->value.string, dir, path, setting->size);

   if (setting->change_handler)
      setting->change_handler(setting);
}

void menu_common_setting_set_current_string(
      rarch_setting_t *setting, const char *str)
{
   strlcpy(setting->value.string, str, setting->size);

   if (setting->change_handler)
      setting->change_handler(setting);
}

static void handle_driver(const char *label, char *driver,
      size_t sizeof_driver, unsigned action)
{
   switch (action)
   {
      case MENU_ACTION_LEFT:
         find_prev_driver(label, driver, sizeof_driver);
         break;
      case MENU_ACTION_RIGHT:
         find_next_driver(label, driver, sizeof_driver);
         break;
   }
}

static void handle_setting(rarch_setting_t *setting,
      unsigned id, unsigned action)
{
   if (setting->type == ST_BOOL)
      menu_common_setting_set_current_boolean(setting, action);
   else if (setting->type == ST_UINT)
      menu_common_setting_set_current_unsigned_integer(setting, action);
   else if (setting->type == ST_FLOAT)
      menu_common_setting_set_current_fraction(setting, action);
   else if (setting->type == ST_DIR)
   {
      if (action == MENU_ACTION_START)
      {
         *setting->value.string = '\0';

         if (setting->change_handler)
            setting->change_handler(setting);
      }
   }
   else if (setting->type == ST_PATH)
      menu_common_setting_set_current_path_selection(setting,
            setting->default_value.string, id, action);
   else if (setting->type == ST_STRING)
   {
      if (!strcmp(setting->name, "audio_device"))
      {
         if (action == MENU_ACTION_OK)
            menu_key_start_line(driver.menu, "Audio Device Name / IP: ",
                  "audio_device", st_string_callback);
         else if (action == MENU_ACTION_START)
            *setting->value.string = '\0';
      }
      else if (!strcmp(setting->name, "netplay_nickname"))
      {
         if (action == MENU_ACTION_OK)
            menu_key_start_line(driver.menu, "Username: ",
                  "netplay_nickname", st_string_callback);
         else if (action == MENU_ACTION_START)
            *setting->value.string = '\0';
      }
#ifdef HAVE_NETPLAY
      else if (!strcmp(setting->name, "netplay_ip_address"))
      {
         if (action == MENU_ACTION_OK)
            menu_key_start_line(driver.menu, "IP Address: ",
                  "netplay_ip_address", st_string_callback);
         else if (action == MENU_ACTION_START)
            *setting->value.string = '\0';
      }
#endif
      if (!strcmp(setting->name, "video_driver"))
         handle_driver(setting->name, g_settings.video.driver,
               sizeof(g_settings.video.driver), action);
      else if (!strcmp(setting->name, "audio_driver"))
         handle_driver(setting->name, g_settings.audio.driver,
               sizeof(g_settings.audio.driver), action);
      else if (!strcmp(setting->name, "audio_resampler_driver"))
      {
         if (action == MENU_ACTION_LEFT)
            find_prev_resampler_driver();
         else if (action == MENU_ACTION_RIGHT)
            find_next_resampler_driver();
      }
      else if (!strcmp(setting->name, "input_driver"))
         handle_driver(setting->name, g_settings.input.driver,
               sizeof(g_settings.input.driver), action);
      else if (!strcmp(setting->name, "camera_driver"))
         handle_driver(setting->name, g_settings.camera.driver,
               sizeof(g_settings.camera.driver), action);
      else if (!strcmp(setting->name, "location_driver"))
         handle_driver(setting->name, g_settings.location.driver,
               sizeof(g_settings.location.driver), action);
      else if (!strcmp(setting->name, "menu_driver"))
         handle_driver(setting->name, g_settings.menu.driver,
               sizeof(g_settings.menu.driver), action);
   }
}

static int menu_setting_set(unsigned id, unsigned action)
{
   unsigned port = driver.menu->current_pad;
   rarch_setting_t *setting = (rarch_setting_t*)get_last_setting(
         driver.menu->selection_buf, driver.menu->selection_ptr,
         setting_data_get_list()
         );

   if (setting)
      handle_setting(setting, id, action);
   else
   {
      setting = (rarch_setting_t*)get_last_setting(
            driver.menu->selection_buf, driver.menu->selection_ptr,
            setting_data_get_mainmenu(true)
            );

      if (setting)
         handle_setting(setting, id, action);
      else
      {
         switch (id)
         {
            case MENU_SETTINGS_DISK_INDEX:
               {
                  int step = 0;

                  if (action == MENU_ACTION_RIGHT || action == MENU_ACTION_OK)
                     step = 1;
                  else if (action == MENU_ACTION_LEFT)
                     step = -1;

                  if (step)
                  {
                     const struct retro_disk_control_callback *control =
                        (const struct retro_disk_control_callback*)
                        &g_extern.system.disk_control;
                     unsigned num_disks = control->get_num_images();
                     unsigned current   = control->get_image_index();
                     unsigned next_index = (current + num_disks + 1 + step)
                        % (num_disks + 1);
                     rarch_disk_control_set_eject(true, false);
                     rarch_disk_control_set_index(next_index);
                     rarch_disk_control_set_eject(false, false);
                  }

                  break;
               }
               // controllers
            case MENU_SETTINGS_BIND_PLAYER:
               if (action == MENU_ACTION_START)
                  driver.menu->current_pad = 0;
               else if (action == MENU_ACTION_LEFT)
               {
                  if (driver.menu->current_pad != 0)
                     driver.menu->current_pad--;
               }
               else if (action == MENU_ACTION_RIGHT)
               {
                  if (driver.menu->current_pad < MAX_PLAYERS - 1)
                     driver.menu->current_pad++;
               }
               if (port != driver.menu->current_pad)
                  driver.menu->need_refresh = true;
               port = driver.menu->current_pad;
               break;
            case MENU_SETTINGS_BIND_DEVICE:
               {
                  int *p = &g_settings.input.joypad_map[port];
                  if (action == MENU_ACTION_START)
                     *p = port;
                  else if (action == MENU_ACTION_LEFT)
                     (*p)--;
                  else if (action == MENU_ACTION_RIGHT)
                     (*p)++;

                  if (*p < -1)
                     *p = -1;
                  else if (*p >= MAX_PLAYERS)
                     *p = MAX_PLAYERS - 1;
               }
               break;
            case MENU_SETTINGS_BIND_ANALOG_MODE:
               switch (action)
               {
                  case MENU_ACTION_START:
                     g_settings.input.analog_dpad_mode[port] = 0;
                     break;

                  case MENU_ACTION_OK:
                  case MENU_ACTION_RIGHT:
                     g_settings.input.analog_dpad_mode[port] =
                        (g_settings.input.analog_dpad_mode[port] + 1)
                        % ANALOG_DPAD_LAST;
                     break;

                  case MENU_ACTION_LEFT:
                     g_settings.input.analog_dpad_mode[port] =
                        (g_settings.input.analog_dpad_mode
                         [port] + ANALOG_DPAD_LAST - 1) % ANALOG_DPAD_LAST;
                     break;

                  default:
                     break;
               }
               break;
            case MENU_SETTINGS_BIND_DEVICE_TYPE:
               {
                  unsigned current_device, current_index, i, devices[128];
                  const struct retro_controller_info *desc;
                  unsigned types = 0;

                  devices[types++] = RETRO_DEVICE_NONE;
                  devices[types++] = RETRO_DEVICE_JOYPAD;

                  /* Only push RETRO_DEVICE_ANALOG as default if we use an 
                   * older core which doesn't use SET_CONTROLLER_INFO. */
                  if (!g_extern.system.num_ports)
                     devices[types++] = RETRO_DEVICE_ANALOG;

                  desc = port < g_extern.system.num_ports ?
                     &g_extern.system.ports[port] : NULL;
                  if (desc)
                  {
                     for (i = 0; i < desc->num_types; i++)
                     {
                        unsigned id = desc->types[i].id;
                        if (types < ARRAY_SIZE(devices) &&
                              id != RETRO_DEVICE_NONE &&
                              id != RETRO_DEVICE_JOYPAD)
                           devices[types++] = id;
                     }
                  }

                  current_device = g_settings.input.libretro_device[port];
                  current_index = 0;
                  for (i = 0; i < types; i++)
                  {
                     if (current_device == devices[i])
                     {
                        current_index = i;
                        break;
                     }
                  }

                  bool updated = true;
                  switch (action)
                  {
                     case MENU_ACTION_START:
                        current_device = RETRO_DEVICE_JOYPAD;
                        break;

                     case MENU_ACTION_LEFT:
                        current_device = devices
                           [(current_index + types - 1) % types];
                        break;

                     case MENU_ACTION_RIGHT:
                     case MENU_ACTION_OK:
                        current_device = devices
                           [(current_index + 1) % types];
                        break;

                     default:
                        updated = false;
                  }

                  if (updated)
                  {
                     g_settings.input.libretro_device[port] = current_device;
                     pretro_set_controller_port_device(port, current_device);
                  }

                  break;
               }
            case MENU_SETTINGS_CUSTOM_BIND_MODE:
               if (action == MENU_ACTION_OK || action == MENU_ACTION_LEFT ||
                     action == MENU_ACTION_RIGHT)
                  driver.menu->bind_mode_keyboard =
                     !driver.menu->bind_mode_keyboard;
               break;
            case MENU_SETTINGS_CUSTOM_BIND_ALL:
               if (action == MENU_ACTION_OK)
               {
                  driver.menu->binds.target = &g_settings.input.binds[port][0];
                  driver.menu->binds.begin = MENU_SETTINGS_BIND_BEGIN;
                  driver.menu->binds.last = MENU_SETTINGS_BIND_LAST;

                  file_list_push(driver.menu->menu_stack, "", "",
                        driver.menu->bind_mode_keyboard ?
                        MENU_SETTINGS_CUSTOM_BIND_KEYBOARD :
                        MENU_SETTINGS_CUSTOM_BIND,
                        driver.menu->selection_ptr);
                  if (driver.menu->bind_mode_keyboard)
                  {
                     driver.menu->binds.timeout_end =
                        rarch_get_time_usec() + 
                        MENU_KEYBOARD_BIND_TIMEOUT_SECONDS * 1000000;
                     input_keyboard_wait_keys(driver.menu,
                           menu_custom_bind_keyboard_cb);
                  }
                  else
                  {
                     menu_poll_bind_get_rested_axes(&driver.menu->binds);
                     menu_poll_bind_state(&driver.menu->binds);
                  }
               }
               break;
            case MENU_SETTINGS_CUSTOM_BIND_DEFAULT_ALL:
               if (action == MENU_ACTION_OK)
               {
                  unsigned i;
                  struct retro_keybind *target = (struct retro_keybind*)
                     &g_settings.input.binds[port][0];
                  const struct retro_keybind *def_binds = 
                     port ? retro_keybinds_rest : retro_keybinds_1;

                  driver.menu->binds.begin = MENU_SETTINGS_BIND_BEGIN;
                  driver.menu->binds.last = MENU_SETTINGS_BIND_LAST;

                  for (i = MENU_SETTINGS_BIND_BEGIN;
                        i <= MENU_SETTINGS_BIND_LAST; i++, target++)
                  {
                     if (driver.menu->bind_mode_keyboard)
                        target->key = def_binds[i - MENU_SETTINGS_BIND_BEGIN].key;
                     else
                     {
                        target->joykey = NO_BTN;
                        target->joyaxis = AXIS_NONE;
                     }
                  }
               }
               break;
#if defined(GEKKO)
            case MENU_SETTINGS_VIDEO_RESOLUTION:
               if (action == MENU_ACTION_LEFT)
               {
                  if (menu_current_gx_resolution > 0)
                     menu_current_gx_resolution--;
               }
               else if (action == MENU_ACTION_RIGHT)
               {
                  if (menu_current_gx_resolution < GX_RESOLUTIONS_LAST - 1)
                  {
#ifdef HW_RVL
                     if ((menu_current_gx_resolution + 1) > GX_RESOLUTIONS_640_480)
                        if (CONF_GetVideo() != CONF_VIDEO_PAL)
                           return 0;
#endif

                     menu_current_gx_resolution++;
                  }
               }
               else if (action == MENU_ACTION_OK)
               {
                  if (driver.video_data)
                     gx_set_video_mode(driver.video_data, menu_gx_resolutions
                           [menu_current_gx_resolution][0],
                           menu_gx_resolutions[menu_current_gx_resolution][1]);
               }
               break;
#elif defined(__CELLOS_LV2__)
            case MENU_SETTINGS_VIDEO_RESOLUTION:
               if (action == MENU_ACTION_LEFT)
               {
                  if (g_extern.console.screen.resolutions.current.idx)
                  {
                     g_extern.console.screen.resolutions.current.idx--;
                     g_extern.console.screen.resolutions.current.id =
                        g_extern.console.screen.resolutions.list
                        [g_extern.console.screen.resolutions.current.idx];
                  }
               }
               else if (action == MENU_ACTION_RIGHT)
               {
                  if (g_extern.console.screen.resolutions.current.idx + 1 <
                        g_extern.console.screen.resolutions.count)
                  {
                     g_extern.console.screen.resolutions.current.idx++;
                     g_extern.console.screen.resolutions.current.id =
                        g_extern.console.screen.resolutions.list
                        [g_extern.console.screen.resolutions.current.idx];
                  }
               }
               else if (action == MENU_ACTION_OK)
               {
                  if (g_extern.console.screen.resolutions.list[
                        g_extern.console.screen.resolutions.current.idx] == 
                        CELL_VIDEO_OUT_RESOLUTION_576)
                  {
                     if (g_extern.console.screen.pal_enable)
                        g_extern.console.screen.pal60_enable = true;
                  }
                  else
                  {
                     g_extern.console.screen.pal_enable = false;
                     g_extern.console.screen.pal60_enable = false;
                  }

                  rarch_main_command(RARCH_CMD_REINIT);
               }
#endif
               break;
#ifdef HAVE_SHADER_MANAGER
            case MENU_SETTINGS_SHADER_PASSES:
               {
                  struct gfx_shader *shader = (struct gfx_shader*)
                     driver.menu->shader;

                  switch (action)
                  {
                     case MENU_ACTION_START:
                        if (shader && shader->passes)
                           shader->passes = 0;
                        driver.menu->need_refresh = true;
                        break;

                     case MENU_ACTION_LEFT:
                        if (shader && shader->passes)
                           shader->passes--;
                        driver.menu->need_refresh = true;
                        break;

                     case MENU_ACTION_RIGHT:
                     case MENU_ACTION_OK:
                        if (shader && (shader->passes < GFX_MAX_SHADERS))
                           shader->passes++;
                        driver.menu->need_refresh = true;
                        break;

                     default:
                        break;
                  }

                  if (driver.menu->need_refresh)
                     gfx_shader_resolve_parameters(NULL, driver.menu->shader);
               }
               break;
            case MENU_SETTINGS_SHADER_APPLY:
               {
                  struct gfx_shader *shader = (struct gfx_shader*)driver.menu->shader;
                  unsigned type = RARCH_SHADER_NONE;

                  if (!driver.video || !driver.video->set_shader ||
                        action != MENU_ACTION_OK)
                     return 0;

                  RARCH_LOG("Applying shader ...\n");

                  if (driver.menu_ctx && driver.menu_ctx->backend &&
                        driver.menu_ctx->backend->shader_manager_get_type)
                     type = driver.menu_ctx->backend->shader_manager_get_type(
                           driver.menu->shader);

                  if (shader->passes && type != RARCH_SHADER_NONE
                        && driver.menu_ctx && driver.menu_ctx->backend &&
                        driver.menu_ctx->backend->shader_manager_save_preset)
                     driver.menu_ctx->backend->shader_manager_save_preset(NULL, true);
                  else
                  {
                     type = gfx_shader_parse_type("", DEFAULT_SHADER_TYPE);
                     if (type == RARCH_SHADER_NONE)
                     {
#if defined(HAVE_GLSL)
                        type = RARCH_SHADER_GLSL;
#elif defined(HAVE_CG) || defined(HAVE_HLSL)
                        type = RARCH_SHADER_CG;
#endif
                     }
                     if (driver.menu_ctx && driver.menu_ctx->backend &&
                           driver.menu_ctx->backend->shader_manager_set_preset)
                        driver.menu_ctx->backend->shader_manager_set_preset(
                              NULL, type, NULL);
                  }
               }
               break;
            case MENU_SETTINGS_SHADER_PRESET_SAVE:
               if (action == MENU_ACTION_OK)
                  menu_key_start_line(driver.menu, "Preset Filename: ",
                        "shader_preset_save", preset_filename_callback);
               break;
#endif
            default:
               break;
         }
      }
   }

   return 0;
}

#ifdef HAVE_SHADER_MANAGER
#include "menu_common_shader_backend.c"
#endif

static int menu_setting_ok_toggle(unsigned type,
      const char *dir, const char *label,
      unsigned action)
{
   if (type >= MENU_SETTINGS_BIND_BEGIN &&
         type <= MENU_SETTINGS_BIND_ALL_LAST)
   {
      struct retro_keybind *bind = (struct retro_keybind*)
         &g_settings.input.binds[driver.menu->current_pad]
         [type - MENU_SETTINGS_BIND_BEGIN];

      driver.menu->binds.begin  = type;
      driver.menu->binds.last   = type;
      driver.menu->binds.target = bind;
      driver.menu->binds.player = driver.menu->current_pad;
      file_list_push(driver.menu->menu_stack, "", "",
            driver.menu->bind_mode_keyboard ?
            MENU_SETTINGS_CUSTOM_BIND_KEYBOARD : MENU_SETTINGS_CUSTOM_BIND,
            driver.menu->selection_ptr);

      if (driver.menu->bind_mode_keyboard)
      {
         driver.menu->binds.timeout_end = rarch_get_time_usec() +
            MENU_KEYBOARD_BIND_TIMEOUT_SECONDS * 1000000;
         input_keyboard_wait_keys(driver.menu,
               menu_custom_bind_keyboard_cb);
      }
      else
      {
         menu_poll_bind_get_rested_axes(&driver.menu->binds);
         menu_poll_bind_state(&driver.menu->binds);
      }

      return 0;
   }
   else if (
         !strcmp(label, "load_content") ||
         !strcmp(label, "detect_core_list")
      )
   {
      driver.menu->defer_core = (!strcmp(label, "detect_core_list"));
      menu_entries_push(driver.menu->menu_stack,
            g_settings.menu_content_directory, "", MENU_FILE_DIRECTORY,
            driver.menu->selection_ptr);
      return 0;
   }
   else if (
         !strcmp(label, "history_list") ||
         menu_common_type_is(type) == MENU_FILE_DIRECTORY)
   {
      menu_entries_push(driver.menu->menu_stack,
            "", "", type, driver.menu->selection_ptr);
      return 0;
   }
   else if (
         menu_common_type_is(type) == MENU_SETTINGS ||
         type == MENU_SETTINGS_CORE ||
         type == MENU_SETTINGS_CONFIG ||
         type == MENU_SETTINGS_DISK_APPEND
         )
   {
      menu_entries_push(driver.menu->menu_stack,
            dir ? dir : label, "", type,
            driver.menu->selection_ptr);
      return 0;
   }
   else if (type == MENU_SETTINGS_CUSTOM_VIEWPORT)
   {
      file_list_push(driver.menu->menu_stack, "", "",
            type, driver.menu->selection_ptr);

      /* Start with something sane. */
      rarch_viewport_t *custom = (rarch_viewport_t*)
         &g_extern.console.screen.viewports.custom_vp;

      if (driver.video_data && driver.video &&
            driver.video->viewport_info)
         driver.video->viewport_info(driver.video_data, custom);
      aspectratio_lut[ASPECT_RATIO_CUSTOM].value =
         (float)custom->width / custom->height;

      g_settings.video.aspect_ratio_idx = ASPECT_RATIO_CUSTOM;

      rarch_main_command(RARCH_CMD_VIDEO_SET_ASPECT_RATIO);
      return 0;
   }
   return -1;
}

static int menu_setting_start_toggle(unsigned type,
      const char *dir, const char *label,
      unsigned action)
{
   if (type >= MENU_SETTINGS_BIND_BEGIN &&
         type <= MENU_SETTINGS_BIND_ALL_LAST)
   {
      struct retro_keybind *bind = (struct retro_keybind*)
         &g_settings.input.binds[driver.menu->current_pad]
         [type - MENU_SETTINGS_BIND_BEGIN];

      if (driver.menu->bind_mode_keyboard)
      {
         const struct retro_keybind *def_binds = driver.menu->current_pad ?
            retro_keybinds_rest : retro_keybinds_1;
         bind->key = def_binds[type - MENU_SETTINGS_BIND_BEGIN].key;
      }
      else
      {
         bind->joykey = NO_BTN;
         bind->joyaxis = AXIS_NONE;
      }

      return 0;
   }
   return -1;
}

static int menu_setting_toggle(unsigned type,
      const char *dir, const char *label,
      unsigned action)
{
   struct retro_perf_counter **counters = NULL;

   if (action == MENU_ACTION_OK &&
        menu_setting_ok_toggle(type, dir, label, action) == 0)
      return 0;
   else if (action == MENU_ACTION_START &&
        menu_setting_start_toggle(type, dir, label, action) == 0)
      return 0;
   else if ((type >= MENU_SETTINGS_SHADER_FILTER) &&
         (type <= MENU_SETTINGS_SHADER_LAST))
   {
      if (driver.menu_ctx && driver.menu_ctx->backend
            && driver.menu_ctx->backend->shader_manager_setting_toggle)
         return driver.menu_ctx->backend->shader_manager_setting_toggle(
               type, action);
   }
   else if ((type >= MENU_SETTINGS_CORE_OPTION_START))
      return menu_common_core_setting_toggle(type, action);
   else if (type >= MENU_SETTINGS_PERF_COUNTERS_BEGIN &&
         type <= MENU_SETTINGS_PERF_COUNTERS_END)
   {
      counters = (struct retro_perf_counter**)perf_counters_rarch;
      return menu_common_setting_set_perf(type, action, counters,
            type - MENU_SETTINGS_PERF_COUNTERS_BEGIN);
   }
   else if (type >= MENU_SETTINGS_LIBRETRO_PERF_COUNTERS_BEGIN &&
         type <= MENU_SETTINGS_LIBRETRO_PERF_COUNTERS_END)
   {
      counters = (struct retro_perf_counter**)perf_counters_libretro;
      return menu_common_setting_set_perf(type, action, counters,
            type - MENU_SETTINGS_LIBRETRO_PERF_COUNTERS_BEGIN);
   }
   else if (driver.menu_ctx && driver.menu_ctx->backend)
      return menu_setting_set(type, action);

   return 0;
}

static int menu_settings_iterate(unsigned action)
{
   const char *path = NULL;
   const char *dir  = NULL;
   const char *label = NULL;
   unsigned type = 0;
   unsigned menu_type = 0;

   if (!driver.menu)
      return 0;

   driver.menu->frame_buf_pitch = driver.menu->width * 2;

   if (action != MENU_ACTION_REFRESH)
      file_list_get_at_offset(driver.menu->selection_buf,
            driver.menu->selection_ptr, NULL, &label, &type);

   if (!strcmp(label, "core_list"))
      dir = g_settings.libretro_directory;
   else if (!strcmp(label, "configurations"))
      dir = g_settings.menu_config_directory;
   else if (type == MENU_SETTINGS_DISK_APPEND)
      dir = g_settings.menu_content_directory;

   if (driver.menu->need_refresh && action != MENU_ACTION_MESSAGE)
      action = MENU_ACTION_NOOP;

   switch (action)
   {
      case MENU_ACTION_UP:
         if (driver.menu->selection_ptr > 0)
            menu_decrement_navigation(driver.menu);
         else
            menu_set_navigation(driver.menu,
                  file_list_get_size(driver.menu->selection_buf) - 1);
         break;

      case MENU_ACTION_DOWN:
         if ((driver.menu->selection_ptr + 1) <
               file_list_get_size(driver.menu->selection_buf))
            menu_increment_navigation(driver.menu);
         else
            menu_clear_navigation(driver.menu);
         break;

      case MENU_ACTION_CANCEL:
         menu_entries_pop();
         break;
      case MENU_ACTION_SELECT:
         file_list_get_at_offset(driver.menu->selection_buf,
               driver.menu->selection_ptr, NULL, NULL,
               &driver.menu->info_selection);
         file_list_push(driver.menu->menu_stack, "", "info_screen",
               0, driver.menu->selection_ptr);
         break;
      case MENU_ACTION_LEFT:
      case MENU_ACTION_RIGHT:
      case MENU_ACTION_OK:
      case MENU_ACTION_START:
         {
            int ret = menu_setting_toggle(type, dir,
                  label, action);

            if (ret)
               return ret;
         }
         break;

      case MENU_ACTION_REFRESH:
         menu_clear_navigation(driver.menu);
         driver.menu->need_refresh = true;
         break;

      case MENU_ACTION_MESSAGE:
         driver.menu->msg_force = true;
         break;

      default:
         break;
   }

   file_list_get_last(driver.menu->menu_stack, &path, &label, &menu_type);

   if (driver.menu->need_refresh && (menu_parse_check(label, menu_type) == -1))
   {
      driver.menu->need_refresh = false;
      menu_entries_push_list(driver.menu, path, label, menu_type);
   }

   if (driver.menu_ctx && driver.menu_ctx->render)
      driver.menu_ctx->render();

   /* Have to defer it so we let settings refresh. */
   if (driver.menu->push_start_screen)
   {
      driver.menu->push_start_screen = false;
      file_list_push(driver.menu->menu_stack, "", "help", 0, 0);
   }

   return 0;
}

static int menu_viewport_iterate(unsigned action)
{
   int stride_x = 1, stride_y = 1;
   char msg[64];
   struct retro_game_geometry *geom = NULL;
   const char *base_msg = NULL;
   const char *label = NULL;
   unsigned menu_type = 0;
   rarch_viewport_t *custom = (rarch_viewport_t*)
      &g_extern.console.screen.viewports.custom_vp;

   if (!driver.menu)
      return 0;

   file_list_get_last(driver.menu->menu_stack, NULL, &label, &menu_type);

   geom = (struct retro_game_geometry*)&g_extern.system.av_info.geometry;

   if (g_settings.video.scale_integer)
   {
      stride_x = geom->base_width;
      stride_y = geom->base_height;
   }

   switch (action)
   {
      case MENU_ACTION_UP:
         if (menu_type == MENU_SETTINGS_CUSTOM_VIEWPORT)
         {
            custom->y -= stride_y;
            custom->height += stride_y;
         }
         else if (custom->height >= (unsigned)stride_y)
            custom->height -= stride_y;

         rarch_main_command(RARCH_CMD_VIDEO_APPLY_STATE_CHANGES);
         break;

      case MENU_ACTION_DOWN:
         if (menu_type == MENU_SETTINGS_CUSTOM_VIEWPORT)
         {
            custom->y += stride_y;
            if (custom->height >= (unsigned)stride_y)
               custom->height -= stride_y;
         }
         else
            custom->height += stride_y;

         rarch_main_command(RARCH_CMD_VIDEO_APPLY_STATE_CHANGES);
         break;

      case MENU_ACTION_LEFT:
         if (menu_type == MENU_SETTINGS_CUSTOM_VIEWPORT)
         {
            custom->x -= stride_x;
            custom->width += stride_x;
         }
         else if (custom->width >= (unsigned)stride_x)
            custom->width -= stride_x;

         rarch_main_command(RARCH_CMD_VIDEO_APPLY_STATE_CHANGES);
         break;

      case MENU_ACTION_RIGHT:
         if (menu_type == MENU_SETTINGS_CUSTOM_VIEWPORT)
         {
            custom->x += stride_x;
            if (custom->width >= (unsigned)stride_x)
               custom->width -= stride_x;
         }
         else
            custom->width += stride_x;

         rarch_main_command(RARCH_CMD_VIDEO_APPLY_STATE_CHANGES);
         break;

      case MENU_ACTION_CANCEL:
         menu_entries_pop();
         if (!strcmp(label, "custom_viewport_2"))
         {
            file_list_push(driver.menu->menu_stack, "", "",
                  MENU_SETTINGS_CUSTOM_VIEWPORT,
                  driver.menu->selection_ptr);
         }
         break;

      case MENU_ACTION_OK:
         menu_entries_pop();
         if (menu_type == MENU_SETTINGS_CUSTOM_VIEWPORT
               && !g_settings.video.scale_integer)
         {
            file_list_push(driver.menu->menu_stack, "",
                  "custom_viewport_2", 0, driver.menu->selection_ptr);
         }
         break;

      case MENU_ACTION_START:
         if (!g_settings.video.scale_integer)
         {
            rarch_viewport_t vp;

            if (driver.video_data && driver.video &&
                  driver.video->viewport_info)
               driver.video->viewport_info(driver.video_data, &vp);

            if (menu_type == MENU_SETTINGS_CUSTOM_VIEWPORT)
            {
               custom->width += custom->x;
               custom->height += custom->y;
               custom->x = 0;
               custom->y = 0;
            }
            else
            {
               custom->width = vp.full_width - custom->x;
               custom->height = vp.full_height - custom->y;
            }

            rarch_main_command(RARCH_CMD_VIDEO_APPLY_STATE_CHANGES);
         }
         break;

      case MENU_ACTION_MESSAGE:
         driver.menu->msg_force = true;
         break;

      default:
         break;
   }

   file_list_get_last(driver.menu->menu_stack, NULL, &label, &menu_type);

   if (driver.video_data && driver.menu_ctx && driver.menu_ctx->render)
      driver.menu_ctx->render();

   if (g_settings.video.scale_integer)
   {
      custom->x = 0;
      custom->y = 0;
      custom->width = ((custom->width + geom->base_width - 1) /
            geom->base_width) * geom->base_width;
      custom->height = ((custom->height + geom->base_height - 1) /
            geom->base_height) * geom->base_height;

      base_msg = "Set scale";
      snprintf(msg, sizeof(msg), "%s (%4ux%4u, %u x %u scale)",
            base_msg,
            custom->width, custom->height,
            custom->width / geom->base_width,
            custom->height / geom->base_height);
   }
   else
   {
      if (menu_type == MENU_SETTINGS_CUSTOM_VIEWPORT)
         base_msg = "Set Upper-Left Corner";
      else if (!strcmp(label, "custom_viewport_2"))
         base_msg = "Set Bottom-Right Corner";

      snprintf(msg, sizeof(msg), "%s (%d, %d : %4ux%4u)",
            base_msg, custom->x, custom->y, custom->width, custom->height);
   }

   if (driver.video_data && driver.menu_ctx &&
         driver.menu_ctx->render_messagebox)
      driver.menu_ctx->render_messagebox(msg);

   if (!custom->width)
      custom->width = stride_x;
   if (!custom->height)
      custom->height = stride_y;

   aspectratio_lut[ASPECT_RATIO_CUSTOM].value =
      (float)custom->width / custom->height;

   rarch_main_command(RARCH_CMD_VIDEO_APPLY_STATE_CHANGES);

   return 0;
}

// This only makes sense for PC so far.
// Consoles use set_keybind callbacks instead.
static int menu_custom_bind_iterate(void *data, unsigned action)
{
   char msg[256];
   menu_handle_t *menu = (menu_handle_t*)data;

   /* Have to ignore action here. Only bind that should work here
    * is Quit RetroArch or something like that. */
   (void)action; 

   if (driver.video_data && driver.menu_ctx && driver.menu_ctx->render)
      driver.menu_ctx->render();

   snprintf(msg, sizeof(msg), "[%s]\npress joypad\n(RETURN to skip)",
         input_config_bind_map[
         menu->binds.begin - MENU_SETTINGS_BIND_BEGIN].desc);

   if (driver.video_data && driver.menu_ctx && driver.menu_ctx->render_messagebox)
      driver.menu_ctx->render_messagebox(msg);

   struct menu_bind_state binds = menu->binds;
   menu_poll_bind_state(&binds);

   if ((binds.skip && !menu->binds.skip) ||
         menu_poll_find_trigger(&menu->binds, &binds))
   {
      binds.begin++;
      if (binds.begin <= binds.last)
         binds.target++;
      else
         menu_entries_pop();

      /* Avoid new binds triggering things right away. */
      menu->trigger_state = 0;
      menu->old_input_state = -1ULL;
   }
   menu->binds = binds;

   return 0;
}

static int menu_custom_bind_iterate_keyboard(void *data, unsigned action)
{
   char msg[256];
   bool timed_out = false;
   menu_handle_t *menu = (menu_handle_t*)data;

   /* Have to ignore action here. */
   (void)action; 

   if (driver.video_data && driver.menu_ctx &&
         driver.menu_ctx->render)
      driver.menu_ctx->render();

   int64_t current = rarch_get_time_usec();
   int timeout = (menu->binds.timeout_end - current) / 1000000;

   snprintf(msg, sizeof(msg), "[%s]\npress keyboard\n(timeout %d seconds)",
         input_config_bind_map[
         menu->binds.begin - MENU_SETTINGS_BIND_BEGIN].desc, timeout);

   if (driver.video_data && driver.menu_ctx && driver.menu_ctx->render_messagebox)
      driver.menu_ctx->render_messagebox(msg);

   if (timeout <= 0)
   {
      menu->binds.begin++;
      menu->binds.target->key = RETROK_UNKNOWN; /* Could be unsafe, but whatever. */
      menu->binds.target++;
      menu->binds.timeout_end = rarch_get_time_usec() +
         MENU_KEYBOARD_BIND_TIMEOUT_SECONDS * 1000000;
      timed_out = true;
   }

   /* binds.begin is updated in keyboard_press callback. */
   if (menu->binds.begin > menu->binds.last)
   {
      menu_entries_pop();

      /* Avoid new binds triggering things right away. */
      menu->trigger_state = 0;
      menu->old_input_state = -1ULL;

      /* We won't be getting any key events, so just cancel early. */
      if (timed_out)
         input_keyboard_wait_keys_cancel();
   }

   return 0;
}



static int menu_action_ok(const char *dir, unsigned menu_type)
{
   const char *label = NULL;
   const char *path = NULL;
   unsigned type = 0;
   rarch_setting_t *setting = NULL;
   rarch_setting_t *setting_data = (rarch_setting_t *)
      setting_data_get_list();

   if (file_list_get_size(driver.menu->selection_buf) == 0)
      return 0;

   file_list_get_at_offset(driver.menu->selection_buf,
         driver.menu->selection_ptr, &path, &label, &type);

   if (menu_parse_check(label, type) == 0)
   {
      char cat_path[PATH_MAX];
      fill_pathname_join(cat_path, dir, path, sizeof(cat_path));

      menu_entries_push(driver.menu->menu_stack,
            cat_path, "browser_list", type, driver.menu->selection_ptr);
   }
   else
   {
#ifdef HAVE_SHADER_MANAGER
      if (menu_common_type_is(menu_type) == MENU_SETTINGS_SHADER_OPTIONS)
      {
         if (menu_type == MENU_SETTINGS_SHADER_PRESET)
         {
            char shader_path[PATH_MAX];
            fill_pathname_join(shader_path, dir, path, sizeof(shader_path));
            if (driver.menu_ctx && driver.menu_ctx->backend &&
                  driver.menu_ctx->backend->shader_manager_set_preset)
               driver.menu_ctx->backend->shader_manager_set_preset(
                     driver.menu->shader,
                     gfx_shader_parse_type(shader_path, RARCH_SHADER_NONE),
                     shader_path);
         }
         else
         {
            struct gfx_shader *shader = (struct gfx_shader*)
               driver.menu->shader;
            unsigned pass = (menu_type - MENU_SETTINGS_SHADER_0) / 3;

            fill_pathname_join(shader->pass[pass].source.path,
                  dir, path, sizeof(shader->pass[pass].source.path));

            /* This will reset any changed parameters. */
            gfx_shader_resolve_parameters(NULL, driver.menu->shader);
         }

         /* Pop stack until we hit shader manager again. */
         menu_flush_stack_type(MENU_SETTINGS_SHADER_OPTIONS);
      }
      else
#endif
         if (menu_type == MENU_SETTINGS_DEFERRED_CORE)
      {
         strlcpy(g_settings.libretro, path, sizeof(g_settings.libretro));
         strlcpy(g_extern.fullpath, driver.menu->deferred_path,
               sizeof(g_extern.fullpath));
         rarch_main_command(RARCH_CMD_LOAD_CONTENT);
         driver.menu->msg_force = true;
         menu_flush_stack_type(MENU_SETTINGS);
         return -1;
      }
      else if (menu_type == MENU_SETTINGS_CORE)
      {
         fill_pathname_join(g_settings.libretro, dir, path,
               sizeof(g_settings.libretro));
         rarch_main_command(RARCH_CMD_LOAD_CORE);
         menu_flush_stack_type(MENU_SETTINGS);
#if defined(HAVE_DYNAMIC)
         /* No content needed for this core, load core immediately. */
         if (driver.menu->load_no_content)
         {
            g_extern.lifecycle_state |= (1ULL << MODE_LOAD_GAME);
            *g_extern.fullpath = '\0';
            driver.menu->msg_force = true;
            return -1;
         }

         /* Core selection on non-console just updates directory listing.
          * Will take effect on new content load. */
#elif defined(RARCH_CONSOLE)
         rarch_main_command(RARCH_CMD_RESTART_RETROARCH);
         return -1;
#endif
      }
      else if (menu_type == MENU_SETTINGS_CONFIG)
      {
         char config[PATH_MAX];
         fill_pathname_join(config, dir, path, sizeof(config));
         menu_flush_stack_type(MENU_SETTINGS);
         driver.menu->msg_force = true;
         if (menu_replace_config(config))
         {
            menu_clear_navigation(driver.menu);
            return -1;
         }
      }
      else if (menu_type == MENU_SETTINGS_OVERLAY_PRESET)
      {
         if ((setting = (rarch_setting_t*)setting_data_find_setting(
                     setting_data, "input_overlay")))
            menu_common_setting_set_current_string_path(setting, dir, path);

         menu_flush_stack_type(MENU_SETTINGS_OPTIONS);
      }
      else if (menu_type == MENU_SETTINGS_DISK_APPEND)
      {
         char image[PATH_MAX];
         fill_pathname_join(image, dir, path, sizeof(image));
         rarch_disk_control_append_image(image);

         g_extern.lifecycle_state |= 1ULL << MODE_GAME;

         menu_flush_stack_type(MENU_SETTINGS);
         return -1;
      }
      else if (menu_type == MENU_SETTINGS_OPEN_HISTORY)
      {
         load_menu_content_history(driver.menu->selection_ptr);
         menu_flush_stack_type(MENU_SETTINGS);
         return -1;
      }
      else if (menu_type == MENU_CONTENT_HISTORY_PATH)
      {
         if ((setting = (rarch_setting_t*)setting_data_find_setting(
                     setting_data, "game_history_path")))
            menu_common_setting_set_current_string_path(setting, dir, path);

         menu_flush_stack_type(MENU_SETTINGS_PATH_OPTIONS);
      }
      else if (menu_type == MENU_BROWSER_DIR_PATH)
      {
         if ((setting = (rarch_setting_t*)setting_data_find_setting(
                     setting_data, "rgui_browser_directory")))
            menu_common_setting_set_current_string(setting, dir);

         menu_flush_stack_type(MENU_SETTINGS_PATH_OPTIONS);
      }
      else if (menu_type == MENU_CONTENT_DIR_PATH)
      {
         if ((setting = (rarch_setting_t*)setting_data_find_setting(
                     setting_data, "content_directory")))
            menu_common_setting_set_current_string(setting, dir);

         menu_flush_stack_type(MENU_SETTINGS_PATH_OPTIONS);
      }
      else if (menu_type == MENU_ASSETS_DIR_PATH)
      {
         if ((setting = (rarch_setting_t*)setting_data_find_setting(
                     setting_data, "assets_directory")))
            menu_common_setting_set_current_string(setting, dir);

         menu_flush_stack_type(MENU_SETTINGS_PATH_OPTIONS);
      }
      else if (menu_type == MENU_SCREENSHOT_DIR_PATH)
      {
         if ((setting = (rarch_setting_t*)setting_data_find_setting(
                     setting_data, "screenshot_directory")))
            menu_common_setting_set_current_string(setting, dir);

         menu_flush_stack_type(MENU_SETTINGS_PATH_OPTIONS);
      }
      else if (menu_type == MENU_SAVEFILE_DIR_PATH)
      {
         if ((setting = (rarch_setting_t*)setting_data_find_setting(
                     setting_data, "savefile_directory")))
            menu_common_setting_set_current_string(setting, dir);
         menu_flush_stack_type(MENU_SETTINGS_PATH_OPTIONS);
      }
      else if (menu_type == MENU_OVERLAY_DIR_PATH)
      {
         if ((setting = (rarch_setting_t*)setting_data_find_setting(
                     setting_data, "overlay_directory")))
            menu_common_setting_set_current_string(setting, dir);
         menu_flush_stack_type(MENU_SETTINGS_PATH_OPTIONS);
      }
      else if (menu_type == MENU_SETTINGS_VIDEO_SOFTFILTER)
      {
         if ((setting = (rarch_setting_t*)setting_data_find_setting(
                     setting_data, "video_filter")))
            menu_common_setting_set_current_string_path(setting, dir, path);

         menu_flush_stack_type(MENU_SETTINGS_VIDEO_OPTIONS);
      }
      else if (menu_type == MENU_SETTINGS_AUDIO_DSP_FILTER)
      {
         if ((setting = (rarch_setting_t*)setting_data_find_setting(
                     setting_data, "audio_dsp_plugin")))
            menu_common_setting_set_current_string_path(setting, dir, path);
         menu_flush_stack_type(MENU_SETTINGS_AUDIO_OPTIONS);
      }
      else if (menu_type == MENU_SAVESTATE_DIR_PATH)
      {
         if ((setting = (rarch_setting_t*)setting_data_find_setting(
                     setting_data, "savestate_directory")))
            menu_common_setting_set_current_string(setting, dir);

         menu_flush_stack_type(MENU_SETTINGS_PATH_OPTIONS);
      }
      else if (menu_type == MENU_LIBRETRO_DIR_PATH)
      {
         if ((setting = (rarch_setting_t*)setting_data_find_setting(
                     setting_data, "libretro_dir_path")))
            menu_common_setting_set_current_string(setting, dir);

         menu_flush_stack_type(MENU_SETTINGS_PATH_OPTIONS);
      }
      else if (menu_type == MENU_CONFIG_DIR_PATH)
      {
         if ((setting = (rarch_setting_t*)setting_data_find_setting(
                     setting_data, "rgui_config_directory")))
            menu_common_setting_set_current_string(setting, dir);

         menu_flush_stack_type(MENU_SETTINGS_PATH_OPTIONS);
      }
      else if (menu_type == MENU_LIBRETRO_INFO_DIR_PATH)
      {
         if ((setting = (rarch_setting_t*)setting_data_find_setting(
                     setting_data, "libretro_info_path")))
            menu_common_setting_set_current_string(setting, dir);

         menu_flush_stack_type(MENU_SETTINGS_PATH_OPTIONS);
      }
      else if (menu_type == MENU_SHADER_DIR_PATH)
      {
         if ((setting = (rarch_setting_t*)setting_data_find_setting(
                     setting_data, "video_shader_dir")))
            menu_common_setting_set_current_string(setting, dir);

         menu_flush_stack_type(MENU_SETTINGS_PATH_OPTIONS);
      }
      else if (menu_type == MENU_FILTER_DIR_PATH)
      {
         if ((setting = (rarch_setting_t*)setting_data_find_setting(
                     setting_data, "video_filter_dir")))
            menu_common_setting_set_current_string(setting, dir);

         menu_flush_stack_type(MENU_SETTINGS_PATH_OPTIONS);
      }
      else if (menu_type == MENU_DSP_FILTER_DIR_PATH)
      {
         if ((setting = (rarch_setting_t*)setting_data_find_setting(
                     setting_data, "audio_filter_dir")))
            menu_common_setting_set_current_string(setting, dir);

         menu_flush_stack_type(MENU_SETTINGS_PATH_OPTIONS);
      }
      else if (menu_type == MENU_SYSTEM_DIR_PATH)
      {
         if ((setting = (rarch_setting_t*)setting_data_find_setting(
                     setting_data, "system_directory")))
            menu_common_setting_set_current_string(setting, dir);

         menu_flush_stack_type(MENU_SETTINGS_PATH_OPTIONS);
      }
      else if (menu_type == MENU_AUTOCONFIG_DIR_PATH)
      {
         if ((setting = (rarch_setting_t*)setting_data_find_setting(
                     setting_data, "joypad_autoconfig_dir")))
            menu_common_setting_set_current_string(setting, dir);

         menu_flush_stack_type(MENU_SETTINGS_PATH_OPTIONS);
      }
      else if (menu_type == MENU_EXTRACTION_DIR_PATH)
      {
         if ((setting = (rarch_setting_t*)setting_data_find_setting(
                     setting_data, "extraction_directory")))
            menu_common_setting_set_current_string(setting, dir);

         menu_flush_stack_type(MENU_SETTINGS_PATH_OPTIONS);
      }
      else
      {
         if (driver.menu->defer_core)
         {
            int ret = menu_defer_core(driver.menu->core_info, dir, path,
                  driver.menu->deferred_path,
                  sizeof(driver.menu->deferred_path));

            if (ret == -1)
            {
               rarch_main_command(RARCH_CMD_LOAD_CORE);
               defer_decision_automatic();
               return -1;
            }
            else if (ret == 0)
               defer_decision_manual();
         }
         else
         {
            fill_pathname_join(g_extern.fullpath, dir, path,
                  sizeof(g_extern.fullpath));
            g_extern.lifecycle_state |= (1ULL << MODE_LOAD_GAME);

            menu_flush_stack_type(MENU_SETTINGS);
            driver.menu->msg_force = true;
            return -1;
         }
      }
   }

   return 0;
}

static int menu_common_iterate(unsigned action)
{
   int ret = 0;
   unsigned menu_type = 0;
   const char *path = NULL;
   const char *menu_label = NULL;

   if (!driver.menu)
   {
      RARCH_ERR("Cannot iterate menu, menu handle is not initialized.\n");
      return 0;
   }

   file_list_get_last(driver.menu->menu_stack, &path, &menu_label, &menu_type);

   if (driver.video_data && driver.menu_ctx && driver.menu_ctx->set_texture)
      driver.menu_ctx->set_texture(driver.menu);

   //RARCH_LOG("Menu label: %s\n", menu_label);

   if (!strcmp(menu_label, "help"))
      return menu_start_screen_iterate(action);
   else if (!strcmp(menu_label, "info_screen"))
      return menu_info_screen_iterate(action);
   else if (menu_common_type_is(menu_type) == MENU_SETTINGS)
      return menu_settings_iterate(action);
   else if (
         menu_type == MENU_SETTINGS_CUSTOM_VIEWPORT ||
         !strcmp(menu_label, "custom_viewport_2")
         )
      return menu_viewport_iterate(action);
   else if (menu_type == MENU_SETTINGS_CUSTOM_BIND)
      return menu_custom_bind_iterate(driver.menu, action);
   else if (menu_type == MENU_SETTINGS_CUSTOM_BIND_KEYBOARD)
      return menu_custom_bind_iterate_keyboard(driver.menu, action);

   if (driver.menu->need_refresh && action != MENU_ACTION_MESSAGE)
      action = MENU_ACTION_NOOP;

   unsigned scroll_speed = (max(driver.menu->scroll_accel, 2) - 2) / 4 + 1;
   unsigned fast_scroll_speed = 4 + 4 * scroll_speed;

   switch (action)
   {
      case MENU_ACTION_UP:
         if (driver.menu->selection_ptr >= scroll_speed)
            menu_set_navigation(driver.menu,
                  driver.menu->selection_ptr - scroll_speed);
         else
            menu_set_navigation(driver.menu,
                  file_list_get_size(driver.menu->selection_buf) - 1);
         break;

      case MENU_ACTION_DOWN:
         if (driver.menu->selection_ptr + scroll_speed <
               file_list_get_size(driver.menu->selection_buf))
            menu_set_navigation(driver.menu,
                  driver.menu->selection_ptr + scroll_speed);
         else
            menu_clear_navigation(driver.menu);
         break;

      case MENU_ACTION_LEFT:
         if (driver.menu->selection_ptr > fast_scroll_speed)
            menu_set_navigation(driver.menu,
                  driver.menu->selection_ptr - fast_scroll_speed);
         else
            menu_clear_navigation(driver.menu);
         break;

      case MENU_ACTION_RIGHT:
         if (driver.menu->selection_ptr + fast_scroll_speed <
               file_list_get_size(driver.menu->selection_buf))
            menu_set_navigation(driver.menu,
                  driver.menu->selection_ptr + fast_scroll_speed);
         else
            menu_set_navigation_last(driver.menu);
         break;

      case MENU_ACTION_SCROLL_UP:
         menu_descend_alphabet(driver.menu, &driver.menu->selection_ptr);
         break;
      case MENU_ACTION_SCROLL_DOWN:
         menu_ascend_alphabet(driver.menu, &driver.menu->selection_ptr);
         break;

      case MENU_ACTION_CANCEL:
         menu_entries_pop();
         break;

      case MENU_ACTION_OK:
         ret = menu_action_ok(path, menu_type);
         break;

      case MENU_ACTION_REFRESH:
         menu_clear_navigation(driver.menu);
         driver.menu->need_refresh = true;
         break;

      case MENU_ACTION_MESSAGE:
         driver.menu->msg_force = true;
         break;

      default:
         break;
   }

   if (driver.menu->need_refresh)
   {
      if (menu_parse_and_resolve() == 0)
         driver.menu->need_refresh = false;
   }

   if (driver.menu_ctx && driver.menu_ctx->iterate)
      driver.menu_ctx->iterate(driver.menu, action);

   if (driver.video_data && driver.menu_ctx && driver.menu_ctx->render)
      driver.menu_ctx->render();

   return ret;
}

#ifdef GEKKO
static unsigned menu_gx_resolutions[GX_RESOLUTIONS_LAST][2] = {
   { 512, 192 },
   { 598, 200 },
   { 640, 200 },
   { 384, 224 },
   { 448, 224 },
   { 480, 224 },
   { 512, 224 },
   { 576, 224 },
   { 608, 224 },
   { 640, 224 },
   { 340, 232 },
   { 512, 232 },
   { 512, 236 },
   { 336, 240 },
   { 352, 240 },
   { 384, 240 },
   { 512, 240 },
   { 530, 240 },
   { 640, 240 },
   { 512, 384 },
   { 598, 400 },
   { 640, 400 },
   { 384, 448 },
   { 448, 448 },
   { 480, 448 },
   { 512, 448 },
   { 576, 448 },
   { 608, 448 },
   { 640, 448 },
   { 340, 464 },
   { 512, 464 },
   { 512, 472 },
   { 352, 480 },
   { 384, 480 },
   { 512, 480 },
   { 530, 480 },
   { 608, 480 },
   { 640, 480 },
};

static unsigned menu_current_gx_resolution = GX_RESOLUTIONS_640_480;
#endif

static void menu_common_setting_set_label_perf(char *type_str,
      size_t type_str_size, unsigned *w, unsigned type,
      const struct retro_perf_counter **counters, unsigned offset)
{
   if (counters[offset] && counters[offset]->call_cnt)
   {
      snprintf(type_str, type_str_size,
#ifdef _WIN32
            "%I64u ticks, %I64u runs.",
#else
            "%llu ticks, %llu runs.",
#endif
            ((unsigned long long)counters[offset]->total /
             (unsigned long long)counters[offset]->call_cnt),
            (unsigned long long)counters[offset]->call_cnt);
   }
   else
   {
      *type_str = '\0';
      *w = 0;
   }
}

static void menu_common_setting_set_label_st_bool(rarch_setting_t *setting,
      char *type_str, size_t type_str_size)
{
   if (!strcmp(setting->name, "savestate") ||
         !strcmp(setting->name, "loadstate"))
   {
      if (g_settings.state_slot < 0)
         strlcpy(type_str, "-1 (auto)", type_str_size);
      else
         snprintf(type_str, type_str_size, "%d", g_settings.state_slot);
   }
   else
      strlcpy(type_str, *setting->value.boolean ? setting->boolean.on_label :
            setting->boolean.off_label, type_str_size);
}

static void menu_common_setting_set_label_st_float(rarch_setting_t *setting,
      char *type_str, size_t type_str_size)
{
   if (setting && !strcmp(setting->name, "video_refresh_rate_auto"))
   {
      double refresh_rate = 0.0;
      double deviation = 0.0;
      unsigned sample_points = 0;

      if (driver_monitor_fps_statistics(&refresh_rate, &deviation, &sample_points))
         snprintf(type_str, type_str_size, "%.3f Hz (%.1f%% dev, %u samples)",
               refresh_rate, 100.0 * deviation, sample_points);
      else
         strlcpy(type_str, "N/A", type_str_size);
   }
   else
      snprintf(type_str, type_str_size, setting->rounding_fraction,
            *setting->value.fraction);
}

static void menu_common_setting_set_label_st_uint(rarch_setting_t *setting,
      char *type_str, size_t type_str_size)
{
   if (setting && !strcmp(setting->name, "video_monitor_index"))
   {
      if (*setting->value.unsigned_integer)
         snprintf(type_str, type_str_size, "%d",
               *setting->value.unsigned_integer);
      else
         strlcpy(type_str, "0 (Auto)", type_str_size);
   }
   else if (setting && !strcmp(setting->name, "video_rotation"))
      strlcpy(type_str, rotation_lut[*setting->value.unsigned_integer],
            type_str_size);
   else if (setting && !strcmp(setting->name, "aspect_ratio_index"))
      strlcpy(type_str,
            aspectratio_lut[*setting->value.unsigned_integer].name,
            type_str_size);
   else if (setting && !strcmp(setting->name, "autosave_interval"))
   {
      if (*setting->value.unsigned_integer)
         snprintf(type_str, type_str_size, "%u seconds",
               *setting->value.unsigned_integer);
      else
         strlcpy(type_str, "OFF", type_str_size);
   }
   else if (setting && !strcmp(setting->name, "user_language"))
   {
      static const char *modes[] = {
         "English",
         "Japanese",
         "French",
         "Spanish",
         "German",
         "Italian",
         "Dutch",
         "Portuguese",
         "Russian",
         "Korean",
         "Chinese (Traditional)",
         "Chinese (Simplified)"
      };

      strlcpy(type_str, modes[g_settings.user_language], type_str_size);
   }
   else if (setting && !strcmp(setting->name, "libretro_log_level"))
   {
      static const char *modes[] = {
         "0 (Debug)",
         "1 (Info)",
         "2 (Warning)",
         "3 (Error)"
      };

      strlcpy(type_str, modes[*setting->value.unsigned_integer],
            type_str_size);
   }
   else
      snprintf(type_str, type_str_size, "%d",
            *setting->value.unsigned_integer);
}

static void handle_setting_label(char *type_str,
      size_t type_str_size, rarch_setting_t *setting)
{
   if (setting->type == ST_BOOL)
      menu_common_setting_set_label_st_bool(setting, type_str, type_str_size);
   else if (setting->type == ST_UINT)
      menu_common_setting_set_label_st_uint(setting, type_str, type_str_size);
   else if (setting->type == ST_FLOAT)
      menu_common_setting_set_label_st_float(setting, type_str, type_str_size);
   else if (setting->type == ST_DIR)
      strlcpy(type_str,
            *setting->value.string ?
            setting->value.string : setting->dir.empty_path,
            type_str_size);
   else if (setting->type == ST_PATH)
      strlcpy(type_str, path_basename(setting->value.string), type_str_size);
   else if (setting->type == ST_STRING)
      strlcpy(type_str, setting->value.string, type_str_size);
   else if (setting->type == ST_GROUP)
      strlcpy(type_str, "...", type_str_size);
}

static void menu_common_setting_set_label(char *type_str,
      size_t type_str_size, unsigned *w, unsigned type, unsigned index)
{
   rarch_setting_t *setting_data = (rarch_setting_t*)setting_data_get_list();
   rarch_setting_t *setting = (rarch_setting_t*)setting_data_find_setting(setting_data,
         driver.menu->selection_buf->list[index].label);

   if (type >= MENU_SETTINGS_PERF_COUNTERS_BEGIN
         && type <= MENU_SETTINGS_PERF_COUNTERS_END)
      menu_common_setting_set_label_perf(type_str, type_str_size, w, type,
            perf_counters_rarch,
            type - MENU_SETTINGS_PERF_COUNTERS_BEGIN);
   else if (type >= MENU_SETTINGS_LIBRETRO_PERF_COUNTERS_BEGIN
         && type <= MENU_SETTINGS_LIBRETRO_PERF_COUNTERS_END)
      menu_common_setting_set_label_perf(type_str, type_str_size, w, type,
            perf_counters_libretro,
            type - MENU_SETTINGS_LIBRETRO_PERF_COUNTERS_BEGIN);
   else if (type >= MENU_SETTINGS_BIND_BEGIN &&
         type <= MENU_SETTINGS_BIND_ALL_LAST)
   {
      const struct retro_keybind *auto_bind = 
         (const struct retro_keybind*)input_get_auto_bind(
               driver.menu->current_pad,
               type - MENU_SETTINGS_BIND_BEGIN);

      input_get_bind_string(type_str,
            &g_settings.input.binds[driver.menu->current_pad]
            [type - MENU_SETTINGS_BIND_BEGIN], auto_bind, type_str_size);
   }
   else if (setting)
      handle_setting_label(type_str, type_str_size, setting);
   else
   {
      setting_data = (rarch_setting_t*)setting_data_get_mainmenu(true);

      setting = (rarch_setting_t*)setting_data_find_setting(setting_data,
            driver.menu->selection_buf->list[index].label);

      if (setting)
      {
         if (type == MENU_SETTINGS_CONFIG)
         {
            if (*g_extern.config_path)
               fill_pathname_base(type_str, g_extern.config_path,
                     type_str_size);
            else
               strlcpy(type_str, "<default>", type_str_size);
         }
         else
            handle_setting_label(type_str, type_str_size, setting);
      }
      else
      {
         switch (type)
         {
#if defined(GEKKO)
            case MENU_SETTINGS_VIDEO_RESOLUTION:
               strlcpy(type_str, gx_get_video_mode(), type_str_size);
               break;
#elif defined(__CELLOS_LV2__)
            case MENU_SETTINGS_VIDEO_RESOLUTION:
               {
                  unsigned width = gfx_ctx_get_resolution_width(
                        g_extern.console.screen.resolutions.list
                        [g_extern.console.screen.resolutions.current.idx]);
                  unsigned height = gfx_ctx_get_resolution_height(
                        g_extern.console.screen.resolutions.list
                        [g_extern.console.screen.resolutions.current.idx]);
                  snprintf(type_str, type_str_size, "%dx%d", width, height);
               }
               break;
#endif
            case MENU_FILE_PLAIN:
               strlcpy(type_str, "(FILE)", type_str_size);
               *w = 6;
               break;
            case MENU_FILE_DIRECTORY:
               strlcpy(type_str, "(DIR)", type_str_size);
               *w = 5;
               break;
            case MENU_SETTINGS_DISK_INDEX:
               {
                  const struct retro_disk_control_callback *control =
                     (const struct retro_disk_control_callback*)
                     &g_extern.system.disk_control;
                  unsigned images = control->get_num_images();
                  unsigned current = control->get_image_index();
                  if (current >= images)
                     strlcpy(type_str, "No Disk", type_str_size);
                  else
                     snprintf(type_str, type_str_size, "%u", current + 1);
                  break;
               }
            case MENU_SETTINGS_CUSTOM_VIEWPORT:
            case MENU_SETTINGS_DISK_OPTIONS:
            case MENU_SETTINGS_SHADER_PRESET:
            case MENU_SETTINGS_SHADER_PRESET_SAVE:
            case MENU_SETTINGS_DISK_APPEND:
            case MENU_SETTINGS_PERFORMANCE_COUNTERS_FRONTEND:
            case MENU_SETTINGS_PERFORMANCE_COUNTERS_LIBRETRO:
            case MENU_SETTINGS_CUSTOM_BIND_ALL:
            case MENU_SETTINGS_CUSTOM_BIND_DEFAULT_ALL:
               strlcpy(type_str, "...", type_str_size);
               break;
            case MENU_SETTINGS_BIND_PLAYER:
               snprintf(type_str, type_str_size, "#%d",
                     driver.menu->current_pad + 1);
               break;
            case MENU_SETTINGS_BIND_DEVICE:
               {
                  int map = g_settings.input.joypad_map
                     [driver.menu->current_pad];
                  if (map >= 0 && map < MAX_PLAYERS)
                  {
                     const char *device_name = 
                        g_settings.input.device_names[map];

                     if (*device_name)
                        strlcpy(type_str, device_name, type_str_size);
                     else
                        snprintf(type_str, type_str_size,
                              "N/A (port #%u)", map);
                  }
                  else
                     strlcpy(type_str, "Disabled", type_str_size);
               }
               break;
            case MENU_SETTINGS_BIND_ANALOG_MODE:
               {
                  static const char *modes[] = {
                     "None",
                     "Left Analog",
                     "Right Analog",
                     "Dual Analog",
                  };

                  strlcpy(type_str, modes[g_settings.input.analog_dpad_mode
                        [driver.menu->current_pad] % ANALOG_DPAD_LAST],
                        type_str_size);
               }
               break;
            case MENU_SETTINGS_BIND_DEVICE_TYPE:
               {
                  const struct retro_controller_description *desc = NULL;
                  if (driver.menu->current_pad < g_extern.system.num_ports)
                     desc = libretro_find_controller_description(
                           &g_extern.system.ports[driver.menu->current_pad],
                           g_settings.input.libretro_device
                           [driver.menu->current_pad]);

                  const char *name = desc ? desc->desc : NULL;
                  if (!name)
                  {
                     /* Find generic name. */

                     switch (g_settings.input.libretro_device
                           [driver.menu->current_pad])
                     {
                        case RETRO_DEVICE_NONE:
                           name = "None";
                           break;
                        case RETRO_DEVICE_JOYPAD:
                           name = "RetroPad";
                           break;
                        case RETRO_DEVICE_ANALOG:
                           name = "RetroPad w/ Analog";
                           break;
                        default:
                           name = "Unknown";
                           break;
                     }
                  }

                  strlcpy(type_str, name, type_str_size);
               }
               break;
            case MENU_SETTINGS_CUSTOM_BIND_MODE:
               strlcpy(type_str, driver.menu->bind_mode_keyboard ?
                     "RetroKeyboard" : "RetroPad", type_str_size);
               break;
            default:
               *type_str = '\0';
               *w = 0;
               break;
         }
      }
   }
}

const menu_ctx_driver_backend_t menu_ctx_backend_common = {
   menu_common_iterate,
#ifdef HAVE_SHADER_MANAGER
   menu_common_shader_manager_init,
   menu_common_shader_manager_get_str,
   menu_common_shader_manager_set_preset,
   menu_common_shader_manager_save_preset,
   menu_common_shader_manager_get_type,
   menu_common_shader_manager_setting_toggle,
#else
   NULL,
   NULL,
   NULL,
   NULL,
   NULL,
   NULL,
#endif
   menu_common_type_is,
   menu_common_setting_set_label,
   "menu_common",
};