syntax = "proto3";

package livekit;
option go_package = "github.com/livekit/protocol/livekit";
option csharp_namespace = "LiveKit.Proto";
option ruby_package = "LiveKit::Proto";

import "google/protobuf/timestamp.proto";
import "livekit_egress.proto";

message Room {
  string sid = 1;
  string name = 2;
  uint32 empty_timeout = 3;
  uint32 max_participants = 4;
  int64 creation_time = 5;
  string turn_password = 6;
  repeated Codec enabled_codecs = 7;
  string metadata = 8;
  uint32 num_participants = 9;
  bool active_recording = 10;
}

// room info that should not be returned to clients
message RoomInternal {
  AutoTrackEgress track_egress = 1;
}

message AutoTrackEgress {
  string file_prefix = 1;
  oneof output {
    S3Upload s3 = 2;
    GCPUpload gcp = 3;
    AzureBlobUpload azure = 4;
  }
}

message Codec {
  string mime = 1;
  string fmtp_line = 2;
}

message ParticipantPermission {
  // allow participant to subscribe to other tracks in the room
  bool can_subscribe = 1;
  // allow participant to publish new tracks to room
  bool can_publish = 2;
  // allow participant to publish data
  bool can_publish_data = 3;
  // indicates that it's hidden to others
  bool hidden = 7;
  // indicates it's a recorder instance
  bool recorder = 8;
}

message ParticipantInfo {
  enum State {
    // websocket' connected, but not offered yet
    JOINING = 0;
    // server received client offer
    JOINED = 1;
    // ICE connectivity established
    ACTIVE = 2;
    // WS disconnected
    DISCONNECTED = 3;
  }
  string sid = 1;
  string identity = 2;
  State state = 3;
  repeated TrackInfo tracks = 4;
  string metadata = 5;
  // timestamp when participant joined room, in seconds
  int64 joined_at = 6;
  string name = 9;
  uint32 version = 10;
  ParticipantPermission permission = 11;
  string region = 12;
  // indicates the participant has an active publisher connection
  // and can publish to the server
  bool is_publisher = 13;
}

enum TrackType {
  AUDIO = 0;
  VIDEO = 1;
  DATA = 2;
}

enum TrackSource {
  UNKNOWN = 0;
  CAMERA = 1;
  MICROPHONE = 2;
  SCREEN_SHARE = 3;
  SCREEN_SHARE_AUDIO = 4;
}

message SimulcastCodecInfo {
  string mime_type = 1;
  string mid = 2;
  string cid = 3;
  repeated VideoLayer layers = 4;
}

message TrackInfo {
  string sid = 1;
  TrackType type = 2;
  string name = 3;
  bool muted = 4;
  // original width of video (unset for audio)
  // clients may receive a lower resolution version with simulcast
  uint32 width = 5;
  // original height of video (unset for audio)
  uint32 height = 6;
  // true if track is simulcasted
  bool simulcast = 7;
  // true if DTX (Discontinuous Transmission) is disabled for audio
  bool disable_dtx = 8;
  // source of media
  TrackSource source = 9;
  repeated VideoLayer layers = 10;
  // mime type of codec
  string mime_type = 11;
  string mid = 12;
  repeated SimulcastCodecInfo codecs = 13;
}

enum VideoQuality {
  LOW = 0;
  MEDIUM = 1;
  HIGH = 2;
  OFF = 3;
}

// provide information about available spatial layers
message VideoLayer {
  // for tracks with a single layer, this should be HIGH
  VideoQuality quality = 1;
  uint32 width = 2;
  uint32 height = 3;
  // target bitrate, server will measure actual
  uint32 bitrate = 4;
  uint32 ssrc = 5;
}

// new DataPacket API
message DataPacket {
  enum Kind {
    RELIABLE = 0;
    LOSSY = 1;
  }
  Kind kind = 1;
  oneof value {
    UserPacket user = 2;
    ActiveSpeakerUpdate speaker = 3;
  }
}

message ActiveSpeakerUpdate {
  repeated SpeakerInfo speakers = 1;
}

message SpeakerInfo {
  string sid = 1;
  // audio level, 0-1.0, 1 is loudest
  float level = 2;
  // true if speaker is currently active
  bool active = 3;
}

message UserPacket {
  // participant ID of user that sent the message
  string participant_sid = 1;
  // user defined payload
  bytes payload = 2;
  // the ID of the participants who will receive the message (the message will be sent to all the people in the room if this variable is empty)
  repeated string destination_sids = 3;
}

enum ConnectionQuality {
  POOR = 0;
  GOOD = 1;
  EXCELLENT = 2;
}

message ParticipantTracks {
  // participant ID of participant to whom the tracks belong
  string participant_sid = 1;
  repeated string track_sids = 2;
}

// details about the server
message ServerInfo {
  enum Edition {
    Standard = 0;
    Cloud = 1;
  }
  Edition edition = 1;
  string version = 2;
  int32 protocol = 3;
  string region = 4;
  string node_id = 5;
  // additional debugging information. sent only if server is in development mode
  string debug_info = 6;
}

// details about the client
message ClientInfo {
  enum SDK {
     UNKNOWN = 0;
     JS = 1;
     SWIFT = 2;
     ANDROID = 3;
     FLUTTER = 4;
     GO = 5;
     UNITY = 6;
  }

  SDK sdk = 1;
  string version = 2;
  int32 protocol = 3;
  string os = 4;
  string os_version = 5;
  string device_model = 6;
  string browser = 7;
  string browser_version = 8;
  string address = 9;
  // wifi, wired, cellular, vpn, empty if not known
  string network = 10;
}

// server provided client configuration
message ClientConfiguration {
  VideoConfiguration video = 1;
  VideoConfiguration screen = 2;

  ClientConfigSetting resume_connection = 3;
  DisabledCodecs disabled_codecs = 4;
  ClientConfigSetting force_relay = 5;
}

enum ClientConfigSetting {
  UNSET = 0;
  DISABLED = 1;
  ENABLED = 2;
}

message VideoConfiguration {
  ClientConfigSetting hardware_encoder = 1;
}

message DisabledCodecs {
  repeated Codec codecs = 1;
}

enum DisconnectReason {
  UNKNOWN_REASON = 0;
  CLIENT_INITIATED = 1;
  DUPLICATE_IDENTITY = 2;
  SERVER_SHUTDOWN = 3;
  PARTICIPANT_REMOVED = 4;
  ROOM_DELETED = 5;
  STATE_MISMATCH = 6;
  JOIN_FAILURE = 7;
}

message RTPStats {
  google.protobuf.Timestamp start_time = 1;
  google.protobuf.Timestamp end_time = 2;
  double duration = 3;

  uint32 packets = 4;
  double packet_rate = 5;

  uint64 bytes = 6;
  uint64 header_bytes = 39;
  double bitrate = 7;

  uint32 packets_lost = 8;
  double packet_loss_rate = 9;
  float packet_loss_percentage = 10;

  uint32 packets_duplicate = 11;
  double packet_duplicate_rate = 12;

  uint64 bytes_duplicate = 13;
  uint64 header_bytes_duplicate = 40;
  double bitrate_duplicate = 14;

  uint32 packets_padding = 15;
  double packet_padding_rate = 16;

  uint64 bytes_padding = 17;
  uint64 header_bytes_padding = 41;
  double bitrate_padding = 18;

  uint32 packets_out_of_order = 19;

  uint32 frames = 20;
  double frame_rate = 21;

  double jitter_current = 22;
  double jitter_max = 23;

  map<int32, uint32> gap_histogram = 24;

  uint32 nacks = 25;
  uint32 nack_acks = 37;
  uint32 nack_misses = 26;
  uint32 nack_repeated = 38;

  uint32 plis = 27;
  google.protobuf.Timestamp last_pli = 28;

  uint32 firs = 29;
  google.protobuf.Timestamp last_fir = 30;

  uint32 rtt_current = 31;
  uint32 rtt_max = 32;

  uint32 key_frames = 33;
  google.protobuf.Timestamp last_key_frame = 34;

  uint32 layer_lock_plis = 35;
  google.protobuf.Timestamp last_layer_lock_pli = 36;
}

message TimedVersion {
  int64 unix_micro = 1;
  int32 ticks = 2;
}