Struct DecoderLimits 

pub struct DecoderLimits { /* private fields */ }

What opening and running one decoder may spend.

Composes FrameLimits — what the frames it produces may cost — with the two things a decoder spends before it has produced anything: copying the caller’s codec parameters into an AVCodecContext, and copying the caller’s compressed bytes into an AVPacket.

Taken at open by every decoder session in this crate, for the reason FrameLimits gives: half of it is written into an AVCodecContext whose ceilings cannot move after avcodec_open2.

Implementations

impl DecoderLimits

pub const fn new() -> Self

The defaults: FrameLimits::new, DEFAULT_MAX_CODEC_PARAMETER_BYTES, DEFAULT_MAX_PACKET_BYTES and DEFAULT_MAX_IMAGE_INPUT_BYTES.

pub const fn frame(&self) -> FrameLimits

What one decoded frame may cost.

pub const fn max_codec_parameter_bytes(&self) -> usize

Most heap bytes the codec parameters this decoder is opened from may hold.

Enforced at the choke point every road into libavcodec passes through, so a decoder cannot be opened over parameters nobody measured.

pub const fn max_packet_bytes(&self) -> usize

Most compressed bytes one packet handed to a stream decoder may carry.

pub const fn packet_limits(&self) -> PacketLimits

Self::max_packet_bytes as the PacketLimits the boundary conversions take, so the send leg and the receive leg are handed the same seat rather than two numbers that could drift.

pub const fn max_image_input_bytes(&self) -> usize

Most compressed bytes one image decode may be handed. See DEFAULT_MAX_IMAGE_INPUT_BYTES for why this is its own seat.

pub const fn with_frame(self, value: FrameLimits) -> Self

Sets the frame ceilings (consuming builder).

pub const fn with_max_codec_parameter_bytes(self, value: usize) -> Self

Sets the codec-parameter ceiling (consuming builder).

pub const fn with_max_packet_bytes(self, value: usize) -> Self

Sets the per-packet ceiling (consuming builder).

pub const fn with_max_image_input_bytes(self, value: usize) -> Self

Sets the image-input ceiling (consuming builder).

pub const fn set_frame(&mut self, value: FrameLimits) -> &mut Self

Sets the frame ceilings in place.

pub const fn set_max_codec_parameter_bytes(&mut self, value: usize) -> &mut Self

Sets the codec-parameter ceiling in place.

pub const fn set_max_packet_bytes(&mut self, value: usize) -> &mut Self

Sets the per-packet ceiling in place.

pub const fn set_max_image_input_bytes(&mut self, value: usize) -> &mut Self

Sets the image-input ceiling in place.

Trait Implementations

impl Clone for DecoderLimits

fn clone(&self) -> DecoderLimits

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DecoderLimits

impl Debug for DecoderLimits

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

Formats the value using the given formatter.

impl Default for DecoderLimits

fn default() -> Self

Returns the “default value” for a type.

impl Eq for DecoderLimits

impl Hash for DecoderLimits

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for DecoderLimits

fn eq(&self, other: &DecoderLimits) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for DecoderLimits