class TimestampExtrapolator

class TimestampExtrapolator

Defined at line 17 of file ../../src/media/codec/codecs/timestamp_extrapolator.h

`TimestampExtrapolator` extrapolates timestamp-like values for a given

timebase for forward offsets in a stream of data.

Public Methods

void TimestampExtrapolator (uint64_t timebase, uint64_t bytes_per_second)

Creates a `TimestampExtrapolator` where `timebase` is the number of

ticks per second of real time and `byte_duration` is the amount of real

time consumed by a single byte of the uncompressed input.

For example, with PCM audio at 48000Hz, the bytes per second is

`48000 * number_of_channels * bytes_per_sample`

Defined at line 9 of file ../../src/media/codec/codecs/timestamp_extrapolator.cc

void TimestampExtrapolator ()

Creates a TimestampExtrapolator that can only carry over timestamps it has

been informed of.

Defined at line 12 of file ../../src/media/codec/codecs/timestamp_extrapolator.cc

void Inform (size_t offset, uint64_t timestamp)

Informs the extrapolator with an input `timestamp`, where `offset` is the

index of the byte in the uncompressed stream to which the `timestamp`

corresponds. This replaces any previously informed timestamp.

Defined at line 14 of file ../../src/media/codec/codecs/timestamp_extrapolator.cc

std::optional<uint64_t> Extrapolate (size_t offset)

Given a novel `offset` >= the the offset of the last informed timestamp,

extrapolate a timestamp value. This consumes the most recently informed

timestamp, leaving the extrapolator without a timestamp until another is

provided by `Inform()`.

Returns std::nullopt if there is no informed timestamp or no timebase for

extrapolation. Asserts that `offset` >= the offset of the last informed

timestamp.

Defined at line 18 of file ../../src/media/codec/codecs/timestamp_extrapolator.cc

void TimestampExtrapolator (TimestampExtrapolator && )

Defined at line 28 of file ../../src/media/codec/codecs/timestamp_extrapolator.h

void TimestampExtrapolator (TimestampExtrapolator & )

Defined at line 29 of file ../../src/media/codec/codecs/timestamp_extrapolator.h

TimestampExtrapolator & operator= (TimestampExtrapolator && )

Defined at line 30 of file ../../src/media/codec/codecs/timestamp_extrapolator.h

bool has_information ()

Defined at line 51 of file ../../src/media/codec/codecs/timestamp_extrapolator.h