syntax = "proto2";

import "pyatv/protocols/mrp/protobuf/ProtocolMessage.proto";
import "pyatv/protocols/mrp/protobuf/VolumeControlAvailabilityMessage.proto";

extend ProtocolMessage {
  optional VolumeControlCapabilitiesDidChangeMessage volumeControlCapabilitiesDidChangeMessage = 68;
}

message VolumeControlCapabilitiesDidChangeMessage {
  optional VolumeControlAvailabilityMessage capabilities = 1;
  optional string endpointUID = 3;
  optional string outputDeviceUID = 4;
}
