On Mon, 16 Sep 2013 10:10:31 -0400 "D. Michael McIntyre" <rosegarden.trumpe...@gmail.com> wrote:
> On 09/15/2013 09:51 PM, Jim Cochrane wrote: > > ... > > > - If it is not possible, how hard would it be to add this > > feature to the code? (Since it does start playing when it receives > > a START message, it seems to me it should not be hard to modify it > > to allow recording instead of playing when it receives START. > > What you'd want is the ability to arm the record button separately > from the play button, like an old tape recorder. Not sure why it > doesn't do that already. > > In principle, doing what you want should be something like punch > in/punch out recording. In practice, that still isn't reliable after > 13 years, and it's a dubious feature. This code is what Julie Swango > would call brittle. > > I hate messing with it. It's like playing that old Milton Bradley > game where you use the tweezers to take out the little plastic bones, > and if you touch the sides, you get shocked. (It's not supposed to > work like that? Mine sure did! I got many a jolt from that stupid > thing.) That's a pretty vivid metaphor :-) > > The better idea would seem to be making it possible to arm the record > button ahead of play. Then you send your START and presto. Somehow > I just think that's going to turn out to be massively complicated, > fiddly, and prone to malfunction. Call me optimistic. That sounds like what Julie suggested, except the START would be MMC code 2. > > That being the case, I'd be in favor of figuring out some other way. > Is there some likely MIDI message, an obscure controller, absolutely > anything we could poll for and react to without having to fiddle with > any of this other delicate stuff? If so, I'd go that route. Whatever solution is the easiest/most-practical to implement combined with fulfilling my requirements (being able to start rosegarden recording by sending it a MIDI message or a combination of MIDI messages) would be fine with me. However, I should mention that I have since found a work-around. It's rather ugly, but it appears to work. I send a UNIX STOP signal to rosegarden, then click the GUI "record" button, then sit down at my MIDI keyboard and hit a pedal/key combination that tells my filter program to send rosegarden a CONT (continue) signal (which brings rosegarden out of stopped state so that it starts recording), and I immediately start playing. When I'm finished I hit a pedal/key combination that results in rosegarden receiving a real-time STOP message - and it stops recording. > > > However, this > > is coming from a naive view - I'm a programmer, but I know very > > little about the source code.) > > - If it's not possible, is there some workaround? (For example, > > what if I hit 'record' to start rosegarden recording, then send it a > > song-position pointer message for position 0 to force > > rosegarden to reset to position 0 and continue recording from > > there?) > > That sounds like a fine workaround to me. Have you tried it? It > might actually work! I did try it, but I don't think I plugged in the right parameters for the required MIDI::ALSA::output call. rosegarden did not respond. I used Kmidimon to view what was being sent and although it showed a song position pointer message, the data value for the message was bizarre - a large negative number. In the code I plugged in all 0s, expecting to send a song pos value of 0. But either I'm sending the wrong parameters (documentation for sending this type of event seems to be nonexistent) or there's a bug in the library I'm using. I'll get back to you if I succeed in actually sending a 0 value. Jim ------------------------------------------------------------------------------ LIMITED TIME SALE - Full Year of Microsoft Training For Just $49.99! 1,500+ hours of tutorials including VisualStudio 2012, Windows 8, SharePoint 2013, SQL 2012, MVC 4, more. BEST VALUE: New Multi-Library Power Pack includes Mobile, Cloud, Java, and UX Design. Lowest price ever! Ends 9/20/13. http://pubads.g.doubleclick.net/gampad/clk?id=58041151&iu=/4140/ostg.clktrk _______________________________________________ Rosegarden-user mailing list Rosegarden-user@lists.sourceforge.net - use the link below to unsubscribe https://lists.sourceforge.net/lists/listinfo/rosegarden-user
