Struct TimingInfo

pub struct TimingInfo {
    pub num_units_in_tick: NonZeroU32,
    pub time_scale: NonZeroU32,
}

TimingInfo contains the fields that are set when timing_info_present_flag == 1.

This contains the following fields: num_units_in_tick and time_scale.

ISO/IEC-14496-10-2022 - E.2.1

Refer to the direct fields for more information.

Fields

num_units_in_tick: NonZeroU32

The num_units_in_tick is the smallest unit used to measure time.

It is used alongside time_scale to compute the frame_rate as follows:

frame_rate = time_scale / (2 * num_units_in_tick)

It must be greater than 0, therefore, it is a NonZeroU32. If it is 0, it will fail to parse.

ISO/IEC-14496-10-2022 - E.2.1

time_scale: NonZeroU32

The time_scale is the number of time units that pass in 1 second (hz).

It is used alongside num_units_in_tick to compute the frame_rate as follows:

frame_rate = time_scale / (2 * num_units_in_tick)

It must be greater than 0, therefore, it is a NonZeroU32. If it is 0, it will fail to parse.

ISO/IEC-14496-10-2022 - E.2.1

Implementations

impl TimingInfo

pub fn parse<T: Read>(reader: &mut BitReader<T>) -> Result<Self>

Parses the fields defined when the timing_info_present_flag == 1 from a bitstream. Returns a TimingInfo struct.

pub fn build<T: Write>(&self, writer: &mut BitWriter<T>) -> Result<()>

Builds the TimingInfo struct into a byte stream. Returns a built byte stream.

pub fn bitsize(&self) -> u64

Returns the total bits of the TimingInfo struct. It is always 64 bits (8 bytes).

pub fn bytesize(&self) -> u64

Returns the total bytes of the TimingInfo struct. It is always 8 bytes (64 bits).

pub fn frame_rate(&self) -> f64

Returns the frame rate of the TimingInfo struct.

Trait Implementations

impl Clone for TimingInfo

fn clone(&self) -> TimingInfo

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TimingInfo

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

Formats the value using the given formatter.

impl PartialEq for TimingInfo

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