/*
 * Copyright (C) 2023 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

syntax = "proto3";

package com.example.android.vdmdemo.common;

option java_outer_classname = "RemoteEventProto";
option java_package = "com.example.android.vdmdemo.common";

// Next ID: 19
message RemoteEvent {
  int32 display_id = 1;

  oneof event {
    DeviceCapabilities device_capabilities = 2;
    StartStreaming start_streaming = 3;
    StopStreaming stop_streaming = 4;
    DisplayCapabilities display_capabilities = 5;
    DisplayRotation display_rotation = 6;
    EncodedFrame display_frame = 7;
    SensorConfiguration sensor_configuration = 8;
    RemoteInputEvent input_event = 9;
    RemoteSensorEvent sensor_event = 10;
    StartAudio start_audio = 11;
    AudioFrame audio_frame = 12;
    StopAudio stop_audio = 13;
    RemoteHomeEvent home_event = 14;
    DisplayChangeEvent display_change_event = 15;
    KeyboardVisibilityEvent keyboard_visibility_event = 16;
    StartAudioInput start_audio_input = 17;
    StopAudioInput stop_audio_input = 18;
    StartCameraStream start_camera_stream = 19;
    StopCameraStream stop_camera_stream = 20;
    CameraFrame camera_frame = 21;
  }
}

message DeviceCapabilities {
  string device_name = 1;
  repeated SensorCapabilities sensor_capabilities = 2;
  repeated CameraCapabilities camera_capabilities = 5;
  bool supports_audio_input = 3;
  bool supports_audio_output = 4;
}

message DisplayRotation {
  int32 rotation_degrees = 1;
}

message SensorCapabilities {
  int32 type = 1;
  string name = 2;
  string vendor = 3;
  float max_range = 4;
  float resolution = 5;
  float power = 6;
  int32 min_delay_us = 7;
  int32 max_delay_us = 8;
}

message CameraCapabilities {
  string camera_id = 1;
  int32 width = 2;
  int32 height = 3;
  int32 fps = 4;
  int32 lens_facing = 5;
  int32 sensor_orientation = 6;
}

message StartCameraStream {
  string camera_id = 1;
}

message StopCameraStream {
  string camera_id = 2;
}

message CameraFrame {
  string camera_id = 1;
  EncodedFrame camera_frame = 2;
}

message StartStreaming {
  bool home_enabled = 1;
}

message StopStreaming {
  bool pause = 1;
}

message DisplayCapabilities {
  int32 viewport_width = 1;
  int32 viewport_height = 2;
  int32 density_dpi = 3;
}

message EncodedFrame {
  bytes frame_data = 1;
  int32 frame_index = 2;
  int32 flags = 3;
  int64 presentation_time_us = 4;
}

enum InputDeviceType {
  DEVICE_TYPE_NONE = 0;
  DEVICE_TYPE_MOUSE = 1;
  DEVICE_TYPE_DPAD = 2;
  DEVICE_TYPE_NAVIGATION_TOUCHPAD = 3;
  DEVICE_TYPE_TOUCHSCREEN = 4;
  DEVICE_TYPE_KEYBOARD = 5;
}

message RemoteInputEvent {
  int64 timestamp_ms = 1;

  InputDeviceType device_type = 2;

  oneof event {
    RemoteMotionEvent mouse_relative_event = 3;
    RemoteKeyEvent mouse_button_event = 4;
    RemoteMotionEvent mouse_scroll_event = 5;

    RemoteKeyEvent key_event = 6;

    RemoteMotionEvent touch_event = 7;
  }
}

message RemoteMotionEvent {
  int32 pointer_id = 1;
  int32 action = 2;
  float x = 3;
  float y = 4;
  float pressure = 5;
}

message RemoteKeyEvent {
  int32 action = 1;
  int32 key_code = 2;
}

message SensorConfiguration {
  int32 sensor_type = 1;
  bool enabled = 2;
  int32 sampling_period_us = 3;
  int32 batch_reporting_latency_us = 4;
}

message RemoteSensorEvent {
  int32 sensor_type = 1;
  repeated float values = 2;
}

message StartAudio {}

message StopAudio {}

message StartAudioInput {
  int32 sample_rate = 1;
  int32 channel_mask = 2;
  int32 encoding = 3;
}

message StopAudioInput {}

message AudioFrame {
  bytes data = 1;
}

message RemoteHomeEvent {}

message DisplayChangeEvent {
  string title = 1;
  bool focused = 2;
}

message KeyboardVisibilityEvent {
  bool visible = 1;
}