savonet/liquidsoap 1.4.0

Liquidsoap 1.4.0

on GitHub

This is with great pleasure (and a bit of relief!) that we can now announce that liquidsoap 1.4.0 is out! 🎉

This has been quite a long release cycle but it also comes with some awesome changes. Let's have a look at some of the most important ones:

• Utf8 script parsing is now supported, allowing to define variables in utf8 (hello 🎵 = playlist("..")!) but, more importantly, to write and deal with utf8 strings in your script, such as metadata and etc.

• You can now use any tuple size in the language, i.e. x = (1,"abc",true,..) and fetch members of a tuple via the new keyword: let (a,b,c) = x

• We support encoding and decoding using the ffmpeg library. This allows a wide range of codec support both as input and output. Support is limited to audio for this release but is expected to extend to video for the next major release.

• External executions can now optionally be sandboxed using bubblewrap. This feature can enhance the security of your setup if, for instance, your radio receives URLs from external sources.

• HLS output is now supported via output.file.hls and output.harbor.hls[.ssl].

• cross/crossfade and smart_cross/smart_crossfade are now merged. New cross/crossfade behave like the old crossfade operators by default and like their smart counter-part by passing smart=true. 'override_durationmetadata now uses the label"liq_cross_duration"`.

• SRT input and output are now supported, via input.srt and output.srt

Full changelog:

New:

• UTF8 parsing!
• Added support for tuples: x = (1,"aa",false) (#838)
• Added support for deconstructing tuples: let (z,t,_) = x (#838)
• Added input.{file,harbor}.hls to read HLS stream (#59, #295, #296).
• Added output.hls to natively stream in HLS (#758).
• Added %ffmpeg native encoder, only for audio encoding for now (#952)
• Added ffmpeg-based stream decoder, limited to mime type application/ffmpeg for now.
• Added (to_){string,float,int,bool}_getter operators to handle getters in
  script side.
• Made p parameter in smooth_add a float getter (#601)
• Added source.time to get a source's clock time.
• Added max_duration to limit a source's duration.
• Added file.temp_dir to create temporary directories.
• Added file.{unlink,rmdir} to remove, resp., file and directories.
• Added file.write to write content to a file.
• Added file.read to read contents of a file without loading all of it in memory.
• Added youtube-pl:<ID> protocol to resolve and parse youtube playlists (or
  any playlist supported by youtube-dl) (#761)
• Added protocol.aws.endpoint setting for the s3:// protocol, thanks to
  @RecursiveGreen. (#778)
• Added support for sandboxing run_process calls. (#785)
• Added harbor.{http,https}.static to serve static path.
• Added log.{critical,severe,important,info,warning,debug}. Use aliases in code as well (#800, #801, #802)
• Added sleep function.
• Added mkavailable function.
• Added fade.skip function. (#804)
• Added video.external.testsrc function.
• Added video.frame.* and audio.samplerate.
• Added input.external.ffmpeg and output.external.ffmpeg.
• Added output.youtube.live.ffmpeg.
• Added output.file.hls.ffmpeg.
• Added reopen telnet command in output.external.
• Enabled external decoders in windows (#742)
• Added support for bash completion.
• Added video.add_text.native.
• Added configure.bindir
• Added for and while loop functions.
• Added list.case.
• Added metadata.string_getter and metadata.float_getter.
• Added string.contains.
• Added request.uri.
• Added {input,output}.srt (#898)
• Added path.remove_extension.
• Added SSL read/write timeout options, use it for incoming socket connections (#932)
• Added ffmpeg resampler (#947).
• Added lsl and lsr.

Changed:

• Depends on OCaml >= 4.08.0
• Changed return type of http.* and run_process to use tuples (#838)
• Better error reporting with coloring and uniform format. (#790)
• Improved reporting of file, line and character during parsing errors.
• Remove dynamic plugin build option.
• Made on_end delay a float getter.
• Reimplemented fade.{in,initial,out,final} as scripted operators. (#664)
• Removed cross/crossfade operators, superseeded by
  smart_cross/smart_crossfade
• Rename smart_cross/smart_crossfade operators as cross/crossfade
• Default behavior of crossfade is old (simple) crossfade. Use smart=true
  to enable old smart_crossfade behavior.
• Rename file.duration as request.duration
• Removed duplicate is_directory
• Rename {basename,dirname} as path.{is_directory,basename,dirname}
• Empty playlists return by scripted resolvers is now considered a failure to
  resolve.
• Rewrite smooth_add to use new mkcross functions.
• Reimplemented open_process_full to get a hand on pid and finer-grained
  closing workflow (#703)
• Added transition_length to switch-based operators to limit transition
  lengths and allow garbage collection of transition sources.
• SDL renders text in UTF-8. (#712)
• Made x and y parameters in video.add_text float getters. (#730)
• Reimplemented extract-replaygain using ffmpeg, added an optional replay
  gain option to the ffmpeg2wav protocol. Thanks to @Yamakaky for contributing
  on this. (#749)
• The ratio parameter of compress and limit is a float getter. (#745)
• Removed rewrite_metadata which had been deprecated for a while now.
• Allow string getter for harbor HTTP responses.
• Renamed get_clock_status to clock.status and log_clocks to clock.log.
• Renamed rms_window parameter of compress to window. (#796)
• Added chop operator.
• Keep master tracks' boundaries in mux_* functions. (#795)
• Added new_track optional argument to callback in insert_metadata.
• Use getters for weights of rotate. (#808)
• Added conservative, length and default_duration params to
  playlist.{reloadable,once,merge} (#818)
• Renamed input.external into input.external.rawaudio, added
  input.external.wav.
• Renamed gstreamer.hls to output.file.hls.gstreamer.
• Raise an error when using a format (e.g. %vorbis, %mp3, ..) that is not
  enabled. (#857)
• Set default encoders and ladspa plugins samplerate and channels to configured
  internal "frame.audio.samplerate" and "frame.audio.channels". (#870)
• Handle unary minus in the preprocessor instead of the parser in order to avoid
  duplicating the parser. (#860)
• Add filter option to playlist.once.
• Added a replay_delay option to the pipe operator to replay metadata and
  breaks after a delay instead of restart the piping process. (#885)
• Add buffer_length telnet command to input.harbor.
• Bumped default length parameter for request-based sources (playlist,
  request.dynamic, ..) to 40. to assure that there always is at least
  one request ready to play when the current one ends.
• Added support for cue in/out and fade in/out/type metadata support in ffmpeg2wav
  protocol. Rename protocol to ffmpeg. (#909)
• list.assoc and list.remove_assoc require an ordered type as first
  component.
• Renamed quote to string.quote.
• Added phase_inversion={true/false} to %opus encoder (#937)
• Fixed encoders forcing frame rate and audio channels too early (#933)
• Change filename to a string getter in file-based outputs. (#198)
• Changed audio.converter.samplerate.preferred option to
  audio.converter.samplerate.converters to give a list of possible converters.

Fixed:

• Lack of documentation for cross/crossfade (#743)
• Fixed before metadata being lost during crossfade not in conservative mode.
• Correct types and default values for random.int (#767).
• Allow changing pipeline in gstreamer functions. (#762)
• Script deadlock after a long time, most likely related to old crossfade
  transitions (#755)
• AVI export fixed. (#789)
• %external does not stop processes anymore on each metadata. (#789)
• Fixed exit getting stuck when using input.jack (#769)
• Stop lo server on shutdown. (#820)
• Fixed external process stop not detected on second and further calls (#833)
• Add seek in operators where implementation is clear (#853)
• Do not enter buffering mode between tracks in buffer (#836)
• Fixed file descriptor leak in external processes (#865)
• Fixed encoded output creating empty files from failing sources (#876)
• Fixed cue_cut not working when used before cross/crossfade (#874)
• Fixed audio glitches when seeking within a MP3 file.
• Fixed insert_metadata logic when insert new track and metadata (#903)
• Fixed replay-gain script default location.
• Fixed audio glitches at the end of crossfade transitions.
• Specify that list.remove removes only the first occurrence and avoid
  reversing the list (#922).
• File descriptor leak when using openssl-based operators.
• Fixed SSL read taking too long to timeout (#932)
• Fixed output starting when underlying source is not available (#393)