Struct NalSampleWriter 

pub struct NalSampleWriter {
    pub vps: Vec<Vec<u8>>,
    pub sps: Vec<Vec<u8>>,
    pub pps: Vec<Vec<u8>>,
    /* private fields */
}

Repackages Annex-B encoder frames into length-prefixed mdat samples while collecting the parameter sets for the avcC/hvcC config box.

Two modes:

• out-of-band (default): SPS/PPS/VPS are stripped from samples and stored in the config box. Correct for a single encoder (avc1/hvc1).
• inline ([new_inline]): SPS/PPS/VPS are ALSO kept inline in each access unit (each IDR self-describes). Used by the multi-GPU stitch, where chunks come from independent encoders (possibly different vendors): the inline parameter sets let each chunk decode with its own SPS/PPS even if they differ cosmetically. Pairs with the avc3/hev1 sample entry. The config box still gets the FIRST set as a default hint.

Fields

vps: Vec<Vec<u8>>

HEVC VPS NAL units (empty for H.264), first-seen order, de-duplicated.

sps: Vec<Vec<u8>>

pps: Vec<Vec<u8>>

Implementations

impl NalSampleWriter

pub fn new(codec: NalMuxCodec) -> Self

pub fn new_inline(codec: NalMuxCodec) -> Self

Inline-parameter-set mode (for the multi-GPU stitch). Keeps SPS/PPS/VPS inline in each access unit AND records the first set for the config box.

pub fn push_packet(&mut self, annexb: &[u8]) -> Vec<AuSample>

Convert one encoder packet — which may carry multiple access units (HW encoders return several frames per buffer) — into one length-prefixed mdat sample per access unit. Access units are delimited by the AUD NAL (a packet with no AUD is treated as one unit). SPS/PPS/VPS are captured (for the config box) and stripped from samples.

pub fn has_param_sets(&self) -> bool

Whether the parameter sets needed for the config box have been seen.

Trait Implementations

impl Debug for NalSampleWriter

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

Formats the value using the given formatter.