Struct SubLayerHrdParameters

pub struct SubLayerHrdParameters {
    pub bit_rate_value_minus1: u32,
    pub cpb_size_value_minus1: u32,
    pub cpb_size_du_value_minus1: Option<u64>,
    pub bit_rate_du_value_minus1: Option<u64>,
    pub cbr_flag: bool,
    /* private fields */
}

Sub-layer HRD parameters.

sub_layer_hrd_parameters(subLayerId)

• ISO/IEC 23008-2 - E.2.3
• ISO/IEC 23008-2 - E.3.3

Fields

bit_rate_value_minus1: u32

Specifies (together with bit_rate_scale) the maximum input bit rate for the i-th CPB when the CPB operates at the access unit level.

For any i > 0, bit_rate_value_minus1[i] is greater than bit_rate_value_minus1[i − 1].

The value is in range [0, 2^32 - 2].

Defines BitRate[i].

cpb_size_value_minus1: u32

Used together with cpb_size_scale to specify the i-th CPB size when the CPB operates at the access unit level.

For any i > 0, cpb_size_value_minus1[i] is less than or equal to cpb_size_value_minus1[i − 1].

The value is in range [0, 2^32 - 2].

Defines CpbSize[i].

cpb_size_du_value_minus1: Option<u64>

Used together with cpb_size_du_scale to specify the i-th CPB size when the CPB operates at sub-picture level.

For any i > 0, cpb_size_du_value_minus1[i] is less than or equal to cpb_size_du_value_minus1[i − 1].

The value is in range [0, 2^32 - 2].

Defines CpbSize[i].

bit_rate_du_value_minus1: Option<u64>

Specifies (together with bit_rate_scale) the maximum input bit rate for the i-th CPB when the CPB operates at the sub-picture level.

For any i > 0, bit_rate_du_value_minus1[i] shall be greater than bit_rate_du_value_minus1[i − 1].

The value is in range [0, 2^32 - 2].

Defines BitRate[i].

cbr_flag: bool

Equal to false specifies that to decode this CVS by the HRD using the i-th CPB specification, the hypothetical stream scheduler (HSS) operates in an intermittent bit rate mode.

Equal to true specifies that the HSS operates in a constant bit rate (CBR) mode.

Implementations

impl SubLayerHrdParameters

pub fn bit_rate( &self, sub_pic_hrd_flag: bool, bit_rate_scale: u8, br_vcl_factor: u64, br_nal_factor: u64, max_br: u64, ) -> u64

When SubPicHrdFlag is equal to false, the bit rate in bits per second is given by: BitRate[i] = (bit_rate_value_minus1[ i ] + 1) * 2^(6 + bit_rate_scale) (E-77)

When SubPicHrdFlag is equal to true, the bit rate in bits per second is given by: BitRate[i] = (bit_rate_du_value_minus1[ i ] + 1) * 2^(6 + bit_rate_scale) (E-80)

When SubPicHrdFlag is equal to true and the bit_rate_du_value_minus1[i] syntax element is not present, the value of BitRate[i] is inferred to be equal to BrVclFactor * MaxBR for VCL HRD parameters and to be equal to BrNalFactor * MaxBR for NAL HRD parameters, where MaxBR, BrVclFactor and BrNalFactor are specified in ISO/IEC 23008-2 - A.4.

pub fn cpb_size( &self, sub_pic_hrd_flag: bool, cpb_size_scale: u8, cpb_vcl_factor: u64, cpb_nal_factor: u64, max_cpb: u64, ) -> u64

When SubPicHrdFlag is equal to false, the CPB size in bits is given by: CpbSize[i] = (cpb_size_value_minus1[ i ] + 1) * 2^(4 + cpb_size_scale) (E-78)

When SubPicHrdFlag is equal to true, the CPB size in bits is given by: CpbSize[i] = (cpb_size_du_value_minus1[ i ] + 1) * 2^(4 + cpb_size_du_scale) (E-79)

When SubPicHrdFlag is equal to true and the cpb_size_du_value_minus1[i] syntax element is not present, the value of CpbSize[i] is inferred to be equal to CpbVclFactor * MaxCPB for VCL HRD parameters and to be equal to CpbNalFactor * MaxCPB for NAL HRD parameters, where MaxCPB, CpbVclFactor and CpbNalFactor are specified in ISO/IEC 23008-2 - A.4.

Trait Implementations

impl Clone for SubLayerHrdParameters

fn clone(&self) -> SubLayerHrdParameters

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SubLayerHrdParameters

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

Formats the value using the given formatter.

impl PartialEq for SubLayerHrdParameters

fn eq(&self, other: &SubLayerHrdParameters) -> 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 SubLayerHrdParameters