Struct Arm 

pub(super) struct Arm {
    profile: VAProfile,
    level_idc: u32,
    mb_width: u32,
    mb_height: u32,
    slices: (u32, u32),
    cabac: bool,
    transform_8x8: bool,
    dpb: u32,
    sequence: VAEncSequenceParameterBufferH264,
    sps: Vec<u8>,
    pps: Vec<u8>,
    idr_pic_id: u16,
}

Fields

profile: VAProfile

level_idc: u32

mb_width: u32

mb_height: u32

slices: (u32, u32)

Slices per picture and macroblock rows per slice.

cabac: bool

transform_8x8: bool

dpb: u32

sequence: VAEncSequenceParameterBufferH264

sps: Vec<u8>

pps: Vec<u8>

idr_pic_id: u16

Implementations

impl Arm

pub(super) fn new(profile: VAProfile) -> Self

pub(super) fn frame_num_range(&self) -> u32

How many values frame_num takes before it wraps.

pub(super) fn slices(&self) -> (u32, u32)

pub(super) fn level(&self) -> u32

The level_idc the sequence names.

pub(super) fn configure( &mut self, n: &Negotiated, surface_width: u32, surface_height: u32, slices: (u32, u32), )

The stream’s sequence: the level the ladder names at this geometry and rate, never below the one the decoded picture buffer was sized for, the picture size in macroblocks with the cropping that trims it, and the SPS and PPS the key frames carry.

pub(super) fn sequence(&mut self, n: &Negotiated, out: &mut Buffers)

pub(super) fn picture( &mut self, n: &Negotiated, frame: &Frame<'_>, out: &mut Buffers, ) -> Result<(), String>

The picture: its frame number and order count since the key frame, the decoded picture buffer as ReferenceFrames, and every slice with its packed header, whose reference list modification moves any reference but the newest short-term frame, which the default list puts first, to the front: a short-term one by its distance in frame numbers, an anchor by its long-term index. In a session keeping anchors the key frame is marked long-term under index 0 and each anchor after it under its index (memory management operation 6), the one it is marked over leaving the buffer.