%%% @doc utility functions
%%% @end
%%%
%%%
%%% Copyright (c) 2013, Takeru Ohta <phjgt308@gmail.com>
%%%
%%% The MIT License
%%%
%%% Permission is hereby granted, free of charge, to any person obtaining a copy
%%% of this software and associated documentation files (the "Software"), to deal
%%% in the Software without restriction, including without limitation the rights
%%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
%%% copies of the Software, and to permit persons to whom the Software is
%%% furnished to do so, subject to the following conditions:
%%%
%%% The above copyright notice and this permission notice shall be included in
%%% all copies or substantial portions of the Software.
%%%
%%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
%%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
%%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
%%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
%%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
%%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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%%%
%%%---------------------------------------------------------------------------------------
-module(rtmpmsg_lib).
-include("../include/rtmpmsg.hrl").

%% API
-export([
         is_protocol_control_message/1
        ]).

%%================================================================================
%% Functions
%%================================================================================
-spec is_protocol_control_message(rtmpmsg:message()) -> boolean().
is_protocol_control_message(Message) ->
    case Message#rtmpmsg.body of
        #rtmpmsg_set_peer_bandwidth{} -> true;
        #rtmpmsg_win_ack_size{}       -> true;
        #rtmpmsg_ack{}                -> true;
        #rtmpmsg_user_control{}       -> true;
        #rtmpmsg_set_chunk_size{}     -> true;
        #rtmpmsg_abort{}              -> true;
        _                             -> false
    end.