I don't own a DM2, but I must say you are doing a hell of a job, mate :) A Tuesday 25 March 2008 10:07:41, Jan Jockusch escreveu: > Hi list! > > More than a week ago I boldly stated that I would send you a patch for > MIDI input in cinelerra soon. I'm a little late, but here it is. And, as > everyone here knows, a small video shows more than words can tell. You > can see the patch in action here: > > http://www.youtube.com/watch?v=ruJVAiUYf7g > > Remember this is a first attempt, so don't expect anything too grand. > The patch allows scrolling through assets, using jogwheels to move > through the viewer and the compositor, and various MIDI key bindings for > cinelerra functions. > > All MIDI assignments are static at the time, and most of the functions > have only been superficially tested. > > Basic technical description: > > - I added a new class, MidiControl, in the same fashion as other > features are factored in Cinelerra. > > - I hooked that class into the automake configuration and into the main > window startup code. > > - The constructor opens an ALSA sequencer device, which has to be > connected by an outside app (jack patchbay, for instance). > > - The class inherits Thread and is able to run a MIDI polling loop in > the background. > > - Inside the MIDI event handling loop, there are switch-case-statements > which handle individual MIDI commands. > > - The code called there is taken from various key handlers in cinelerra, > with minor parameterization changes. > > > My next step: understand how preferences are saved and provide a > preferences pane or a new config window for the MIDI section. > > I'm having special difficulty in extracting the code for automation > control and for drag-editing, which would both be fantastic to have on > the MIDI control surface. Because the original code needs to handle > mouse press, drag, and release events separately, collecting the > corresponding code is a bit painful... So I'll defer that to a later stage. > > The patch is relative to revision 1055, so everyone should be able to > apply it without trouble. > > Any comments are welcome! > > - Ján
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