On 05/25/16 at 01:22am, Anon wrote: > Hi All, > > I want to implement the following use case on Intel Haswell CPU with HD > graphics: > > offscreen OpenGL rendering to OpenGL 2D texture -> use > EGL_MESA_image_dma_buf_export > to export the texture as prime fd -> vaCreateSurfaces from the prime fd -> > use vaapi to hw acclerate h264 encoding > > Is this supported by the latest va-api and libva-intel-driver release > (i.e., 1.7.0)? If so, is there any example I can start with? > > I did read the sample application h264encode.c and thought it might be a > good starting point. However, the first major issue I encountered is when > creating context through vaCreateContext, a number of pre-allocated va > surfaces are required and thus statically associated with the new va > context. However, with prime fd, the fd will change so a new va surface is > created with every new prime fd. I don't see any API can be used to > dynamically add/remove va surfaces after the context is created. Can you > please give me some suggestions?
You can look at the gstreamer-vaapi[1] code, which supports it, though right now is under discussion and rewriting. 1. https://cgit.freedesktop.org/gstreamer/gstreamer-vaapi vmjl _______________________________________________ Libva mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/libva
