syntax = "proto3";

package ascend.presenter.proto;

enum OpenChannelErrorCode {
    kOpenChannelErrorNone = 0;
    kOpenChannelErrorNoSuchChannel = 1;
    kOpenChannelErrorChannelAlreadyOpened = 2;
    kOpenChannelErrorOther = -1;
}

enum ChannelContentType {
    kChannelContentTypeImage = 0;
    kChannelContentTypeVideo = 1;
}

// By Protocol Buffer Style Guide, need to use underscore_separated_names
// for field names
message OpenChannelRequest {
    string channel_name = 1;
    ChannelContentType content_type = 2;
}

message OpenChannelResponse {
    OpenChannelErrorCode error_code = 1;
    string error_message = 2;
}

message HeartbeatMessage {

}

enum ImageFormat {
    kImageFormatJpeg = 0;
}

message Coordinate {
    uint32 x = 1;
    uint32 y = 2;
}

message Rectangle_Attr {
    Coordinate left_top = 1;
    Coordinate right_bottom = 2;
    string label_text = 3;
}

message PresentImageRequest {
     ImageFormat format = 1;
     uint32 width = 2;
     uint32 height = 3;
     bytes data = 4;
     repeated Rectangle_Attr rectangle_list = 5;
}

enum PresentDataErrorCode {
    kPresentDataErrorNone = 0;
    kPresentDataErrorUnsupportedType = 1;
    kPresentDataErrorUnsupportedFormat = 2;
    kPresentDataErrorOther = -1;
}

message PresentImageResponse {
    PresentDataErrorCode error_code = 1;
    string error_message = 2;
}