fix: joypad battery values

Author: ABeltramo

src/moonlight-protocol/moonlight/control.hpp

@@ -68,8 +68,6 @@ enum CONTROLLER_CAPABILITIES : uint8_t {
   RGB_LED = 0x80
 };
 
-constexpr uint8_t BATTERY_PERCENTAGE_UNKNOWN = 0xFF;
-
 enum CONTROLLER_BTN : unsigned int {
   DPAD_UP = 0x0001,
   DPAD_DOWN = 0x0002,
@@ -250,13 +248,15 @@ enum MOTION_TYPE : uint8_t {
   GYROSCOPE = 0x02
 };
 
+constexpr uint8_t BATTERY_PERCENTAGE_UNKNOWN = 0xFF;
+
 enum BATTERY_STATE : unsigned short {
-  BATTERY_DISCHARGING = 0x0,
-  BATTERY_CHARGHING = 0x1,
-  BATTERY_FULL = 0x2,
-  VOLTAGE_OR_TEMPERATURE_OUT_OF_RANGE = 0xA,
-  TEMPERATURE_ERROR = 0xB,
-  CHARGHING_ERROR = 0xF
+  BATTERY_STATE_UNKNOWN = 0x0,
+  BATTERY_NOT_PRESENT = 0x1,
+  BATTERY_DISCHARGHING = 0x2,
+  BATTERY_CHARGING = 0x3,
+  BATTERY_NOT_CHARGING = 0x4,
+  BATTERY_FULL = 0x05
 };
 
 struct CONTROLLER_MOTION_PACKET : INPUT_PKT {

src/moonlight-server/control/input_handler.cpp

@@ -516,10 +516,27 @@ void controller_battery(const CONTROLLER_BATTERY_PACKET &pkt, state::StreamSessi
   if (auto joypad = joypads->find(pkt.controller_number)) {
     selected_pad = std::move(*joypad);
     if (std::holds_alternative<PS5Joypad>(*selected_pad)) {
-      // Battery values in Moonlight are in the range [0, 0xFF (255)]
-      // Inputtino expects them as a percentage [0, 100]
-      std::get<PS5Joypad>(*selected_pad)
-          .set_battery(inputtino::PS5Joypad::BATTERY_STATE(pkt.battery_state), pkt.battery_percentage / 2.55);
+      inputtino::PS5Joypad::BATTERY_STATE state;
+      switch (pkt.battery_state) {
+      case BATTERY_STATE_UNKNOWN:
+      case BATTERY_NOT_PRESENT:
+        return; // We can't set it, let's return
+      case BATTERY_DISCHARGHING:
+        state = inputtino::PS5Joypad::BATTERY_DISCHARGING;
+        break;
+      case BATTERY_CHARGING:
+        state = inputtino::PS5Joypad::BATTERY_CHARGHING;
+        break;
+      case BATTERY_NOT_CHARGING:
+        state = inputtino::PS5Joypad::CHARGHING_ERROR;
+        break;
+      case BATTERY_FULL:
+        state = inputtino::PS5Joypad::BATTERY_FULL;
+        break;
+      }
+      if (pkt.battery_percentage != BATTERY_PERCENTAGE_UNKNOWN) {
+        std::get<PS5Joypad>(*selected_pad).set_battery(state, pkt.battery_percentage);
+      }
     }
   }
 }