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@mikebrady mikebrady released this 05 Dec 13:26
· 543 commits to master since this release
4.1.1
a732f5d

General

This release consists of enhancements and bug fixes to Version 4.1. For information on the new features of 4.1, including AirPlay 2 support, please refer to the 4.1 Release Note.

Enhancements

  • Use the TCP keepalive facility to close a play session if the client connection drops for a minute.

Metadata Enhancements

  • Add FramePosition (phbt), FirstFramePosition (phb0), OutputRate (ofps), OutputFormat (ofmt), StreamType (styp), ServiceName (svna), ClientName (snam) properties to the D-Bus interface and to the metadata stream (codes in brackets).
  • FramePosition/FirstFramePosition metadata is generated only if the progress_interval in the metadata section of the configuration file is non-zero. The progress interval can also be set by a new SetFramePositionUpdateInterval method in the D-Bus interface.
  • FramePosition/FirstFramePosition metadata is of the form <RTP Frame number>/<Local Time> where the local time, in nanoseconds (a 64-bit number), is the precise time that frame should be played. The metadata is generated when the frame is placed in the output buffer, and is thus generated audio_backend_buffer_desired_length_in_seconds (usually 0.2 seconds) before the time in question.
  • Add xesam:albumArtist and xesam:composer metadata (if available) to the metadata bundle presented in the D-Bus interface.
  • Add a new metadata item: sps:songdatakind, derived from the asdk metadata token, to the metadata bundle presented in the D-Bus interface. If 0 it seems to indicate an item of a specific duration such as an audio track; if 1 it seems to mean the stream is of unknown duration, for example an internet radio stream.

Docker Enhancements:

  • Launch the shairport-sync app as root user within the Docker container rather than as the user shairport-sync.
  • Add the configuration file and the sample configuration files back into the Docker image.

Bug Fixes

  • Fix a bug that prevented multiple classic AirPlay instances being recognised. The bug was that the 12-digit classic AirPlay service name prefixes for each instance were all identically derived from a MAC hardware address. The fix was to modify the generation of prefixes to depend on the service name as well as the hardware address.
  • Fix a bug that prevented play to the the PulseAudio backend from resuming after a pause. The bug was due to changes in the way pauses were handled and the fix was to reopen the stream if it is closed whenever a play or latency request was made.
  • Fix a long-standing bug which didn't close the socket used for the RTSP connection, potentially exhausting the sockets available.
  • Fix a bug in audio_alsa.c when there is no hardware device name.
  • Add a configuration check for the xxd program when building for AirPlay 2.
  • Fix a compilation bug on certain platforms by trying to use AC_CHECK_LIB to find libavcodec if the PKG_CHECK_MODULES check fails.

Documentation

  • Include and reference the HTML version of the man page.
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