[linux-audio-dev] reminder about Ecasound Control Interface

Hello, for those new to the API, Ecasound Control Interface (ECI) is a _simple_ API for controlling the Ecasound engine. It certainly is not, and is not meant to be, a general purpose API, but it suits nicely to many small-to-medium-size tasks. General info about ECI can be found at: http://www.eca.cx/eci I'm writing this because the recently released Ecasound-2.3.2 added support for Ruby (contributed by Jan Weil). Prior versions already provided support for C, C++, elisp, Perl, PHP and Python. So quite a few in other words. :) Another thing to remember is that ECI apps can interact with JACK (including full transport support!), use LADSPA plugins for effect processing, and perform native ALSA audio i/o. Second reason I'm writing this now is that I just wrote a small app to monitor JACK transport position (very much like jack_showtime that comes with JACK), and it turned out to be an easy thing to do: --cut-- #!/usr/bin/env python from pyeca import * from time import sleep e = ECA_CONTROL_INTERFACE() e.command("cs-add jackmon") e.command("c-add jacmon") e.command("ai-add jack") e.command("ao-add null") e.command("cs-connect") e.command("start") while e.last_type() != 'e': e.command("get-position") curpos = e.last_float() if e.last_type() == 'e': break sys.stderr.write('JACK system pos %6.2f secs\r' % e.last_float()) sleep(0.2) --cut-- Converting the above to your favorite language is left as an exercise. :) PS If you replace 's/null/jack/' and add the line 'e.command("cop-add -el:djFlanger,0,5,0.5,50")' ... you've turned the script into a small JACK-Rack style app that uses Steve's DjFlanger LADSPA plugin. -- http://www.eca.cx Audio software for Linux!