return reflection->GetInt32(msg, bank_descriptor) == bank;
}
-// Find what MIDI note the given light (as given by field_number) is mapped to, and enable it.
template <class Proto>
-void activate_mapped_light(const Proto &msg, int field_number, std::map<MIDIDevice::LightKey, uint8_t> *active_lights)
+inline MIDILightProto get_light_mapping_helper(const Proto &msg, int field_number)
{
using namespace google::protobuf;
const FieldDescriptor *descriptor = msg.GetDescriptor()->FindFieldByNumber(field_number);
const Reflection *reflection = msg.GetReflection();
if (!reflection->HasField(msg, descriptor)) {
+ return MIDILightProto();
+ }
+ return static_cast<const MIDILightProto &>(reflection->GetMessage(msg, descriptor));
+}
+
+// Find what MIDI note the given light (as given by field_number) is mapped to, and enable it.
+template <class Proto>
+void activate_mapped_light(const Proto &msg, int field_number, std::map<MIDIDevice::LightKey, uint8_t> *active_lights)
+{
+ MIDILightProto light_proto = get_light_mapping_helper(msg, field_number);
+ if (!light_proto.has_note_number()) {
return;
}
- const MIDILightProto &light_proto =
- static_cast<const MIDILightProto &>(reflection->GetMessage(msg, descriptor));
active_lights->emplace(MIDIDevice::LightKey{MIDIDevice::LightKey::NOTE, unsigned(light_proto.note_number())},
light_proto.velocity());
}