add option to toggle menu by holding down start button

input/input_driver.h

@@ -59,6 +59,7 @@ enum input_toggle_type
    INPUT_TOGGLE_START_SELECT,
    INPUT_TOGGLE_L3_R,
    INPUT_TOGGLE_L_R,
+   INPUT_TOGGLE_HOLD_START,
    INPUT_TOGGLE_LAST
 };
 

intl/msg_hash_us.h

@@ -7848,3 +7848,5 @@ MSG_HASH(
     )
 MSG_HASH(MENU_ENUM_LABEL_VALUE_VIDEO_WINDOW_SAVE_POSITION,
       "Remember Window Position and Size")
+MSG_HASH(MENU_ENUM_LABEL_VALUE_HOLD_START,
+      "Hold Start (2 seconds)")

menu/menu_setting.c

@@ -1819,6 +1819,9 @@ static void setting_get_string_representation_toggle_gamepad_combo(
       case INPUT_TOGGLE_L_R:
          strlcpy(s, "L + R", len);
          break;
+      case INPUT_TOGGLE_HOLD_START:
+         strlcpy(s, msg_hash_to_str(MENU_ENUM_LABEL_VALUE_HOLD_START), len);
+         break;
    }
 }
 

msg_hash.h

@@ -2186,6 +2186,8 @@ enum msg_hash_enums
    MENU_ENUM_SUBLABEL_SWITCH_CPU_PROFILE,
 #endif
 
+   MENU_ENUM_LABEL_VALUE_HOLD_START,
+
    MSG_LAST
 };
 

retroarch.c

@@ -140,6 +140,7 @@
 #endif
 
 #define SHADER_FILE_WATCH_DELAY_MSEC 500
+#define HOLD_START_DELAY_SEC 2
 
 /* Descriptive names for options without short variant.
  *
@@ -2507,6 +2508,39 @@ static bool input_driver_toggle_button_combo(
          if (!BIT256_GET_PTR(p_input, RETRO_DEVICE_ID_JOYPAD_R))
             return false;
          break;
+      case INPUT_TOGGLE_HOLD_START:
+      {
+         uint64_t frame_count = 0;
+         bool is_alive = false;
+         bool is_focused = false;
+         static rarch_timer_t timer = {0};
+
+         if (!BIT256_GET_PTR(p_input, RETRO_DEVICE_ID_JOYPAD_START))
+         {
+            /* timer only runs while start is held down */
+            rarch_timer_end(&timer);
+            return false;
+         }
+
+         video_driver_get_status(&frame_count, &is_alive, &is_focused);
+
+         if (!rarch_timer_is_running(&timer))
+         {
+            /* user started holding down the start button, start the timer */
+            rarch_timer_begin(&timer, HOLD_START_DELAY_SEC);
+         }
+
+         rarch_timer_tick(&timer);
+
+         if (!timer.timer_end && rarch_timer_has_expired(&timer))
+         {
+            /* start has been held down long enough, stop timer and enter menu */
+            rarch_timer_end(&timer);
+            return true;
+         }
+
+         return false;
+      }
       default:
       case INPUT_TOGGLE_NONE:
          return false;