Function gst_vulkan_image_buffer_pool_config_get_allocation_params 

pub unsafe extern "C" fn gst_vulkan_image_buffer_pool_config_get_allocation_params(
    config: *mut GstStructure,
    usage: *mut VkImageUsageFlags,
    mem_props: *mut VkMemoryPropertyFlags,
    initial_layout: *mut VkImageLayout,
    initial_access: *mut u64,
)

Available on crate feature v1_26 only.