May 9 2021, John Murphy has written: ... Ecasound has good support for most of that. You can query the time inside the file, to go positions, play and pause. but Ecasound is no longer actively developed. There were a few fixes. Still, it's very stable and well written. Ecasound also has a C/C++ API and libraries in Perl and - I think - Python. VLC amd mpv (mplayer fork) offer ways to be controlled externally. Not sure how far this goes. mpv outputs the current position in text, I suppose this could be used to read from a pipe. Not sure about any kind of network control. The advantage of these players is certainly their ffmpeg support of so many formats and their continued development. HTH. Best wishes, Jeanette -- * Website: http://juliencoder.de - for summer is a state of sound * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g * Audiobombs: https://www.audiobombs.com/users/jeanette_c * GitHub: https://github.com/jeanette-c You should never try to change me I can be nobody else And I like the way I am <3 (Britney Spears)

On 09/05/21 14:55, John Murphy wrote: If you have JACK running and carla installed (or any host that supports lv2) you can use its audiofile plugin. Simply run: $ /usr/lib/carla/carla-bridge-native internal "~/Music/nyan.wav" audiofile Edit the filename of the music file as needed. You can also use the midifile plugin to load MIDI files. Play on/off and seek is controlled with jack transport, so you can use jack_transport CLI tool.

On Sun, May 09, 2021 at 02:55:51PM +0100, John Murphy wrote: Zita-jacktools has a Python class which is an audio file player (via Jack of course). You can control it directly from a Python prompt, or add some code to provide a simple user interface, or have it controlled by anything that Python can interface with. This is the class definition: class JackPlayer(JackClient): """" Multichannel audio file player, with high quality resampling. Supports up to 100 channels. """ STOPPED = 10 STOPLOC = 11 PLAYING = 12 PLAYLOC = 13 ENDFILE = 14 def __init__(self, nchan, client_name, server_name = None) : """ Create a new JackPlayer instance with 'nchan' outputs. The result should be checked using get_state(). The optional 'server_name' allows to select between running servers. """ self._jplayer, base = jackplayer_ext.makecaps (self, client_name, server_name, nchan) super().__init__(base) def get_position (self) : """ Return state, file position. Additional states are: STOPPED = 10 Player is active but stopped. STOPLOC = 11 Waiting for locate() to finish. PLAYING = 12 Player is playing the audiofile. PLAYLOC = 13 Waiting for locate(), play when ready. ENDFILE = 14 Player stopped at end of file. The file position is in frames at the audio file sample rate. """ return jackplayer_ext.get_posit (self._jplayer) def silence(self) : """ Goto the SILENCE state. In this state the player outputs silence and does not respond to any transport commands. Use this state to connect or disconnect ports, and to open or close audio files. """ return jackplayer_ext.set_state (self._jplayer, JackClient.SILENCE) def stop(self) : """ Stop playback with transport commands enabled. """ return jackplayer_ext.set_state (self._jplayer, JackPlayer.STOPPED) def play(self) : """ Start playback. """ return jackplayer_ext.set_state (self._jplayer, JackPlayer.PLAYING) def set_gain(self, gain, time = 0) : """ Set playback gain in dB. Gain will change smoothly to the given value in 'time' seconds. Values less than -150 dB will result in a complete mute. The initial gain is 0 dB. """ return jackplayer_ext.set_gain (self._jplayer, gain, time) def locate(self, posit) : """ Locate to position in frames at the audio file sample rate. This can be used while stopped or while playing. If used in PLAYING state, playback resumes when at least one second or all remaining audio has been buffered. """ return jackplayer_ext.set_posit (self._jplayer, posit) def open_file(self, name) : """ Open an audio file. Player must be in SILENCE state. Returns zero on success, non-zero otherwise. """ return jackplayer_ext.open_file (self._jplayer, name) def close_file(self) : """ Close the current audio file. Player must be in SILENCE state. Returns zero on success, non-zero otherwise. """ return jackplayer_ext.close_file (self._jplayer) def get_file_info(self) : """ Returns channels, sample rate, lenght in frames. """ return jackplayer_ext.get_file_info (self._jplayer) -- FA