mikebrady/shairport-sync 4.1.1

Enhancements and bug fixes

on GitHub

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.