[FFmpeg-devel] [PATCH] lavu: Add DRM hwcontext

[Jorge Ramirez]

On 09/01/2017 05:44 PM, LongChair . wrote:
> +
> +static void drm_unmap_frame(AVHWFramesContext *hwfc,
> +                            HWMapDescriptor *hwmap)
> +{
> +    DRMMapping *map = hwmap->priv;
> +    int i;
> +
> +    for (i = 0; i < map->nb_regions; i++) {
> +        if (map->address[i])
> +            munmap(map->address[i], map->length[i]);

do we need to check the return value of the call?
also if map->address[i] == NULL,  is that not a warning of something 
that went wrong?

> +    }
> +
> +    av_free(map);
> +}