====== gjvideotimeline and ardour  ======

I've succeeded to "overlay" a video-timeline always-on-top over the [[http://ardour.org/|ardour]] editor window synchronizing ardour's canvas zoom level via OSC. 


run [[http://gjvidtimeline.sf.net|gjvidtimeline]] version >= 0.1.1 (svn 10) with ''-o 5280'' command line argument (OSC server). connect gjvidtimeline to JACK and select ''Follow: osc'' in gjvt's task-bar. - choose "always-on-top" from the windowmanager and adjust the window over the ardour-edit-canvas.




===== Screenshots =====
{{  oss:gjvt:box_s.png}}

Note: ardours playhead is in sync with the (red+green=yellow) start/end location markers in gjvidtimeline. So are the start/end positions of the canvas.


  * [[screenshots|still pictures]]
  * [[animated|animated gifs]]




===== ardour OSC patch =====
  * {{oss:gjvt:ardour-svn1686-osccanvas_6.diff|ardour-svn1686 OSC Canvas (v6)}} | same as below, but with a few Hunks offset.
  * {{oss:gjvt:ardour-svn1640-osccanvas_6.diff|ardour-svn1640 OSC Canvas (v6)}} | [[http://gjvidtimeline.sourceforge.net/src/ardour-svn1640-OSCcanvas_6.diff|sourceforge mirror (v6)]] - added Config & En/Disable via Options-menu **"SendOSC"**
  * {{oss:gjvt:ardour-svn1640-osccanvas_4.diff|ardour-svn1640 OSC Canvas (v4)}} | [[http://gjvidtimeline.sourceforge.net/src/ardour-svn1640-OSCcanvas_4.diff|sourceforge mirror (v4)]] - hardcoded, always on 

simple patch to outline the idea (v1):

  . --- gtk2_ardour/editor_canvas.cc        (revision 1633)
  . +++ gtk2_ardour/editor_canvas.cc        (working copy)
  @@ -703,6 +703,7 @@
          return FALSE;
   }
  
  +#include <lo/lo.h>
  
   void
   Editor::canvas_horizontally_scrolled ()
  @@ -724,5 +725,9 @@
          update_fixed_rulers ();
  
          tempo_map_changed (Change (0), !_dragging_hscrollbar);
  +       //printf("DEBUG: hscroll! %lu %lu\n",(long unsigned) leftmost_frame,(long unsigned) rightmost_frame);
  +       lo_address a= lo_address_new ("localhost", "5280");
  +       lo_send(a,"/ardour2/info/canvas","ii",(unsigned long) leftmost_frame, (unsigned long) rightmost_frame);
  +       lo_address_free(a);
   }


===== Building Ardour with the patch =====

  * read http://ardour.org/building

  svn co -r 1640 http://subversion.ardour.org/svn/ardour2/trunk ardour2
  cd ardour2
  patch -p0 < .../ardour-svn1640-osccanvas_6.diff
  scons