Struct heif_security_limits 

#[repr(C)]
pub struct heif_security_limits {

    pub version: u8,
    pub max_image_size_pixels: u64,
    pub max_number_of_tiles: u64,
    pub max_bayer_pattern_pixels: u32,
    pub max_items: u32,
    pub max_color_profile_size: u32,
    pub max_memory_block_size: u64,
    pub max_components: u32,
    pub max_iloc_extents_per_item: u32,
    pub max_size_entity_group: u32,
    pub max_children_per_box: u32,
    pub max_total_memory: u64,
    pub max_sample_description_box_entries: u32,
    pub max_sample_group_description_box_entries: u32,
    pub max_sequence_frames: u32,
    pub max_number_of_file_brands: u32,
    pub max_bad_pixels: u32,
    pub max_iso23001_17_pixel_size_bytes: u32,
    pub parent: *const heif_security_limits,
}

If you set a limit to 0, the limit is disabled.

Fields

version: u8

max_image_size_pixels: u64

Limit on the maximum image size to avoid allocating too much memory. For example, setting this to 32768^2 pixels = 1 Gigapixels results in 1.5 GB memory need for YUV-4:2:0 or 4 GB for RGB32.

max_number_of_tiles: u64

max_bayer_pattern_pixels: u32

Also used for polarization pattern (splz) size limit.

max_items: u32

max_color_profile_size: u32

max_memory_block_size: u64

max_components: u32

max_iloc_extents_per_item: u32

max_size_entity_group: u32

max_children_per_box: u32

for all boxes that are not covered by other limits

max_total_memory: u64

— version 2 (v1.20.0)

max_sample_description_box_entries: u32

max_sample_group_description_box_entries: u32

max_sequence_frames: u32

— version 3 (v1.21.0)

max_number_of_file_brands: u32

max_bad_pixels: u32

— version 4 (v1.22.0)

max_iso23001_17_pixel_size_bytes: u32

Upper bound (in bytes) on the pixel_size field of an uncompressed (ISO 23001-17) uncC box. Caps the byte stride between adjacent pixels and prevents pathological padding values from blowing up tile-size arithmetic.

parent: *const heif_security_limits

Internal: when libheif derives a limits struct from another one (e.g. to tighten the maximum image size for a specific decode), this points back to the registered context whose total-memory budget the allocation should be accounted against. nullptr means “this is a root context” (the registered one). User code should leave this as nullptr; the field is set internally.

Trait Implementations

impl Clone for heif_security_limits

fn clone(&self) -> heif_security_limits

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for heif_security_limits

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Copy for heif_security_limits