Thank you very much Dirson, I will try and give feed back later.
Andy. -----Original Message----- From: Yann Dirson [mailto:[email protected]] Sent: Tuesday, July 12, 2016 3:38 PM To: He Zhenwei Cc: [email protected] Subject: Re: [Libva] How to resize image using hardware accelerate You can do this with a video post-processing operation. Just don't specify any filter, setting the surface_region and output_region in VAProcPipelineParameterBuffer will get the job done. Here is an example (which does not rescale, only does colorspace conversion, but you should get the idea): va_status = vaCreateBuffer(va_dpy, vpp_context_id, VAProcPipelineParameterBufferType, sizeof(VAProcPipelineParameterBuffer), 1, NULL, &vpp_params_bufid); CHECK_VASTATUS(va_status, "vaCreateBuffer vpp_params_bufid"); VAProcPipelineParameterBuffer *pipeline_param; VARectangle region = { .x = 0, .y = 0, .width = (unsigned short)stream_width, .height = (unsigned short)stream_height }; va_status = vaMapBuffer(va_dpy, vpp_params_bufid, (void**)&pipeline_param); CHECK_VASTATUS(va_status, "vaMapBuffer vpp_params"); pipeline_param->surface = surface_ids[cur_surface_idx]; pipeline_param->surface_region = ®ion; pipeline_param->output_region = ®ion; pipeline_param->output_background_color = 0xff000000; // black - FIXME: do that only on first frame! pipeline_param->filter_flags = VA_FILTER_SCALING_FAST; pipeline_param->num_filters = 0; va_status = vaUnmapBuffer(va_dpy, vpp_params_bufid); CHECK_VASTATUS(va_status, "vaUnmapBuffer vpp_params_bufid"); 2016-07-12 9:21 GMT+02:00 He Zhenwei <[email protected]>: > Any one knows? > > -----Original Message----- > From: He Zhenwei [mailto:[email protected]] > Sent: Wednesday, July 06, 2016 12:05 PM > To: '[email protected]' > Subject: How to resize image > > Hi, > > I am new to Libva. I am recently asked to do image resizing using libva, but > I cannot find any instructions how. > Does anyone know the method? Thanks. > > > Andy > > > _______________________________________________ > Libva mailing list > [email protected] > https://lists.freedesktop.org/mailman/listinfo/libva -- Yann Dirson <[email protected]> Blade -- 90 avenue des Ternes, 75017 Paris _______________________________________________ Libva mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/libva
