Merge pull request #3831 from FearlessTobi/add-volume-slider

citra_qt: Add a volume slider

src/core/hle/service/hid/hid.cpp

@@ -345,13 +345,11 @@ void Module::Interface::GetGyroscopeLowCalibrateParam(Kernel::HLERequestContext&
 void Module::Interface::GetSoundVolume(Kernel::HLERequestContext& ctx) {
     IPC::RequestParser rp{ctx, 0x17, 0, 0};
 
-    const u8 volume = 0x3F; // TODO(purpasmart): Find out if this is the max value for the volume
+    const u8 volume = static_cast<u8>(0x3F * Settings::values.volume);
 
     IPC::RequestBuilder rb = rp.MakeBuilder(2, 0);
     rb.Push(RESULT_SUCCESS);
     rb.Push(volume);
-
-    LOG_WARNING(Service_HID, "(STUBBED) called");
 }
 
 Module::Interface::Interface(std::shared_ptr<Module> hid, const char* name, u32 max_session)

src/core/settings.h

@@ -139,6 +139,7 @@ struct Values {
     std::string sink_id;
     bool enable_audio_stretching;
     std::string audio_device_id;
+    float volume;
 
     // Camera
     std::array<std::string, Service::CAM::NumCameras> camera_name;