On Monday 22 March 2004 09:12 am, Rolf Dubitzky wrote: > On Sunday 21 March 2004 22:05, Edwin Schepers wrote: > > I have a digital camera. I'll have a look at pgrab. I don't have any > > knowledge (outside some kde programming), but that will only take time > > (well, only... :-) > > I never grabbed with Linux, but I'll get it working. > > Then I could start making a gui in kdenlive. > > That sound very good. I don't know how much you know about kdenlive/piave, but > you probably have already understood, that kdenlive is the GUI part which > depends _only_ on KDE/Qt and piave is the render engine which has all kinds > of nasty dependencies on the file, audio, and video formats, audio systems, > video systems and ieee1394 interface. The two components comunicate via a > pretty simple protocol over sockets. This protocol needs to be extended to > handle all that is necessary for capturing (which is trivial). I am _very_ > interested in cpturing capabilties, so if you are really interested, I can > implement all the necessary changes in piave and code all the communication > to the actual hardware (most of this is already done anyway). > So if you start creating a GUI component in kdenlive, all you need to do is > send commands via the (existing) communication channel to piave. You don't > need to bother with the underlying hardware. (In fact, you must not, since > kdenlive should be independent of hardware dependencies) > > So the first command to send would probably be something like > > <captureGetDevices> > > to see what is actually attched to the PC. piave would answer something like > the following (run "pgrab -v 2" to see if/how your cam is reported) > > <captureDevices> > <ohci1394> > <device devid="0" name="Sony DCR-TRV30E" type="AVC (subtype=VCR)" /> > </ohci1394> > </captureDevices> > > The device id is an integer for further reference of the device. The name is > actually read from the device itself and can be displayed to the user. In > case more than one device is attached, you can offer a selection box or > whatever. > Then kdenlive could then send commands like > > <capturePlay devid="0"> > > and > > <captureRecord devid="0"> > <captureStop devid="0"> > . > . > . > > > I havn't really thought it through, that's just what comes from thetop of my > head. Shouldn't be too dificult to come up with a reasonable syntax and set > of commands. Hi Rolf, Do you already have something useful on this item, so I can start making a gui and do some testing ?
Regards, Edwin
