Struct ProbeBudgetExhausted 

pub struct ProbeBudgetExhausted { /* private fields */ }

Payload for DemuxError::ProbeBudgetExhausted.

libavformat wanted more of the file than the probe budget allows.

What this bounds

This is the only seat in the crate that reaches behind libavformat: avformat_open_input and avformat_find_stream_info build the attached picture, the extradata and the coded side data out of the file themselves, so every budget measuring this crate’s own copies necessarily arrives after those allocations happened.

A parser cannot allocate from bytes it was never handed, so the input is bounded instead. What is not bounded is amplification inside a parser — a container can describe, in a few bytes, a structure whose in-memory form is far larger, and nothing outside libavformat can observe that. Bounding the output of that is the substrate’s own hardening territory; FFmpeg keeps max_streams, max_index_size and max_picture_buffer for it, and this crate sets the first.

Implementations

impl ProbeBudgetExhausted

pub const fn new(read: u64, budget: u64) -> Self

Constructs a ProbeBudgetExhausted payload.

pub const fn read(&self) -> u64

Bytes libavformat was handed before the budget was reached.

pub const fn budget(&self) -> u64

The budget in force.

Trait Implementations

impl Clone for ProbeBudgetExhausted

fn clone(&self) -> ProbeBudgetExhausted

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ProbeBudgetExhausted

impl Debug for ProbeBudgetExhausted

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

Formats the value using the given formatter.

impl Display for ProbeBudgetExhausted

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

Formats the value using the given formatter.

impl Eq for ProbeBudgetExhausted

impl Error for ProbeBudgetExhausted

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<ProbeBudgetExhausted> for DemuxError

fn from(source: ProbeBudgetExhausted) -> Self

Converts to this type from the input type.

impl PartialEq for ProbeBudgetExhausted

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ProbeBudgetExhausted