[Libva] [Libva-Intel-Driver][PATCH V2 1/2] VPP: Check the VPP pipeline_parameter to avoid NULL pointer

[Xiang, Haihao]

Thanks for the patch set, applied.

> This is to fix the crash issue caused by the commit
> 51ad826fcc0d2512f7ef74e807e4b8526663fc28.
> 
> Reported-by: Xu,Guangxin <guangxin.xu at itnel.com>
> Signed-off-by: Zhao Yakui <yakui.zhao at intel.com>
> ---
>  src/gen75_vpp_vebox.c | 27 +++++++++++++++++++++++----
>  1 file changed, 23 insertions(+), 4 deletions(-)
> 
> diff --git a/src/gen75_vpp_vebox.c b/src/gen75_vpp_vebox.c
> index 566f337..2bc5cf9 100644
> --- a/src/gen75_vpp_vebox.c
> +++ b/src/gen75_vpp_vebox.c
> @@ -1379,10 +1379,29 @@ int
> hsw_veb_pre_format_convert(VADriverContextP ctx,
>  
>      proc_ctx->format_convert_flags = 0;
>  
> -    proc_ctx->width_input   = proc_ctx->pipeline_param-
> >surface_region->width;
> -    proc_ctx->height_input  = proc_ctx->pipeline_param-
> >surface_region->height;
> -    proc_ctx->width_output  = proc_ctx->pipeline_param-
> >output_region->width;
> -    proc_ctx->height_output = proc_ctx->pipeline_param-
> >output_region->height;
> +    if ((obj_surf_input == NULL) &&
> +        (proc_ctx->pipeline_param->surface_region == NULL))
> +        assert(0);
> +
> +    if ((obj_surf_output == NULL) &&
> +        (proc_ctx->pipeline_param->output_region == NULL))
> +        assert(0);
> +
> +    if (proc_ctx->pipeline_param->surface_region) {
> +        proc_ctx->width_input   = proc_ctx->pipeline_param-
> >surface_region->width;
> +        proc_ctx->height_input  = proc_ctx->pipeline_param-
> >surface_region->height;
> +    } else {
> +        proc_ctx->width_input   = obj_surf_input->orig_width;
> +        proc_ctx->height_input  = obj_surf_input->orig_height;
> +    }
> +
> +    if (proc_ctx->pipeline_param->output_region) {
> +        proc_ctx->width_output  = proc_ctx->pipeline_param-
> >output_region->width;
> +        proc_ctx->height_output = proc_ctx->pipeline_param-
> >output_region->height;
> +    } else {
> +        proc_ctx->width_output  = obj_surf_output->orig_width;
> +        proc_ctx->height_output = obj_surf_output->orig_height;
> +    }
>  
>      /* only partial frame is not supported to be processed */
>      /*