Struct PreSkip 

pub struct PreSkip { /* private fields */ }

Pre-skip accumulator (RFC 7845 §5.1 item 4 / §4.2 trimming).

The §5.1 pre-skip is the number of 48 kHz samples (per channel) to discard from the start of the decoded output, giving the decoder’s internal filters time to converge before audible playback begins. This helper threads the remaining pre-skip count across packets: feed it each decoded packet’s per-channel sample count and it reports how many leading per-channel samples of that packet to drop.

Trimming is applied to the per-channel sample stream; for interleaved PCM with C channels, multiply the returned count by C to get the number of interleaved samples to drop from the front of the buffer.

Implementations

impl PreSkip

pub fn new(pre_skip: u16) -> Self

Construct a pre-skip accumulator with pre_skip per-channel samples still to discard.

pub fn from_head(head: &OpusHead) -> Self

Build the pre-skip accumulator for a parsed OpusHead.

pub fn remaining(&self) -> u32

Per-channel samples still to discard.

pub fn is_done(&self) -> bool

true once the pre-skip region has been fully consumed.

pub fn consume(&mut self, samples_per_channel: usize) -> usize

Register samples_per_channel newly-decoded per-channel samples and return how many of them (from the front) fall inside the pre-skip region and must be discarded. The remaining count is advanced accordingly.

Trait Implementations

impl Clone for PreSkip

fn clone(&self) -> PreSkip

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PreSkip

impl Debug for PreSkip

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

Formats the value using the given formatter.

impl Eq for PreSkip

impl PartialEq for PreSkip

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for PreSkip