feat: add backwards compatibility aliases for packet_trailer_features

Author: 1egoman

livekit-rtc/livekit/rtc/__init__.py

@@ -43,6 +43,10 @@
     TrackSource,
     ParticipantTrackPermission,
 )
+
+# Backwards-compatible alias for the enum renamed to FrameMetadataFeature in the
+# FFI protocol (note: member names changed from PTF_* to FMF_*).
+PacketTrailerFeature = FrameMetadataFeature
 from ._proto.video_frame_pb2 import FrameMetadata, VideoBufferType, VideoCodec, VideoRotation
 from ._proto.track_publication_pb2 import VideoQuality
 from .audio_frame import AudioFrame

livekit-rtc/livekit/rtc/track_publication.py

@@ -83,6 +83,11 @@ def audio_features(self) -> List[proto_track.AudioTrackFeature.ValueType]:
     def frame_metadata_features(self) -> List[proto_track.FrameMetadataFeature.ValueType]:
         return list(self._info.frame_metadata_features)
 
+    @property
+    def packet_trailer_features(self) -> List[proto_track.FrameMetadataFeature.ValueType]:
+        """Deprecated alias for :meth:`frame_metadata_features`."""
+        return self.frame_metadata_features
+
 
 class LocalTrackPublication(TrackPublication):
     def __init__(self, owned_info: proto_track.OwnedTrackPublication):