syntax = "proto3";

enum Layer {
  NONE = 0;
  // Well-known layers
  LIGHT = 10;
  COLOR = 20;
  NOTIFICATIONS = 90;
  // Public layers
  GENERAL_0 = 40;
  GENERAL_1 = 41;
  GENERAL_2 = 42; 
  GENERAL_3 = 43; 
  GENERAL_4 = 44; 
  GENERAL_5 = 45; 
  GENERAL_6 = 46; 
  GENERAL_7 = 47; 
  GENERAL_8 = 48; 
  GENERAL_9 = 49; 
}

message FrameData {
  // ARGB
  repeated fixed32 dots = 1;
  fixed32 fill = 2;  
}

message FrameBuffer {
  FrameData frame = 1;
  fixed32 timestamp = 3;
  Layer layer = 4;
}

message FrameSequence {
  repeated FrameBuffer frames = 1;
}

message DrawResponse {
}

service Drawer {
  rpc DrawFrame (FrameBuffer) returns (DrawResponse) {}
  rpc DrawFrames (FrameSequence) returns (DrawResponse) {}
}