Hi Mark, node-openvg-canvas/node-openvg is built on top of EGL that in turn can or should manage that kind of composition.
Currently, the OpenVG initialization is hardcoded to use just a full screen window, it uses the same parameters as required by the HTML5 Canvas (this is especially important for double buffering). One of my longer term goals is to de-hardcode that initialization, moving it from C to JS land, in order to have several windows with separate canvases on each. This is particularly useful for some animation techniques where you overlap several Canvas elements. I haven't tried anything on video rendering yet, but, if the OMX api's are properly exposed on the /opt/vc available APIs, I think that it's totally doable. So, long story short: You can do it with some work. Cheers, Luis Luis -- On Wed, May 1, 2013 at 8:19 PM, Mark Losey <markalo...@gmail.com> wrote: > > Works great on my PI. A newbie with nodejs but is it possible to write > video to this canvas while animating other stuff over the top of the video? > > -- > -- > Job Board: http://jobs.nodejs.org/ > Posting guidelines: > https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines > You received this message because you are subscribed to the Google > Groups "nodejs" group. > To post to this group, send email to nodejs@googlegroups.com > To unsubscribe from this group, send email to > nodejs+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/nodejs?hl=en?hl=en > > --- > You received this message because you are subscribed to the Google Groups > "nodejs" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to nodejs+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- -- Job Board: http://jobs.nodejs.org/ Posting guidelines: https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines You received this message because you are subscribed to the Google Groups "nodejs" group. To post to this group, send email to nodejs@googlegroups.com To unsubscribe from this group, send email to nodejs+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/nodejs?hl=en?hl=en --- You received this message because you are subscribed to the Google Groups "nodejs" group. To unsubscribe from this group and stop receiving emails from it, send an email to nodejs+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
