class TimelineFunction

class TimelineFunction

Defined at line 21 of file ../../src/media/audio/lib/timeline/timeline_function.h

A linear function from int64_t to int64_t with non-negative slope that translates reference

timeline values into subject timeline values (the 'subject' being the timeline that's represented

by the function). The representation is in point-slope form. The point is represented as two

int64_t time values (subject_time, reference_time), and the slope (rate) is represented as a

TimelineRate, the ratio of two uint64_t values (subject_delta / reference_delta).

Public Methods

int64_t Apply (int64_t subject_time, int64_t reference_time, TimelineRate rate, int64_t reference_input)

Applies a timeline function.

Defined at line 18 of file ../../src/media/audio/lib/timeline/timeline_function.cc

int64_t ApplyInverse (int64_t subject_time, int64_t reference_time, TimelineRate rate, int64_t subject_input)

Applies the inverse of a timeline function.

Defined at line 29 of file ../../src/media/audio/lib/timeline/timeline_function.h

void TimelineFunction ()

Defined at line 41 of file ../../src/media/audio/lib/timeline/timeline_function.h

void TimelineFunction (int64_t subject_time, int64_t reference_time, uint64_t subject_delta, uint64_t reference_delta)

Defined at line 43 of file ../../src/media/audio/lib/timeline/timeline_function.h

void TimelineFunction (int64_t subject_time, int64_t reference_time, uint32_t subject_delta, uint32_t reference_delta)

Defined at line 44 of file ../../sdk/lib/media/cpp/timeline_function.h

void TimelineFunction (int64_t subject_time, int64_t reference_time, TimelineRate rate)

Defined at line 49 of file ../../src/media/audio/lib/timeline/timeline_function.h

TimelineFunction Compose (const TimelineFunction & bc, const TimelineFunction & ab, bool exact)

Composes timeline functions B->C and A->B, producing A->C. If exact, ASSERTs on precision loss.

TODO(mpuryear): Consider always allowing inexact results.

Defined at line 49 of file ../../src/media/audio/lib/timeline/timeline_function.cc

void TimelineFunction (TimelineRate rate)

Defined at line 52 of file ../../src/media/audio/lib/timeline/timeline_function.h

bool invertible ()

Determines whether this |TimelineFunction| is invertible.

Defined at line 56 of file ../../src/media/audio/lib/timeline/timeline_function.h

int64_t Apply (int64_t reference_input)

Applies the function. Returns TimelineRate::kOverflow on overflow.

Defined at line 59 of file ../../src/media/audio/lib/timeline/timeline_function.h

int64_t ApplyInverse (int64_t subject_input)

Applies the inverse of the function. Returns TimelineRate::kOverflow on overflow.

Defined at line 64 of file ../../src/media/audio/lib/timeline/timeline_function.h

int64_t operator() (int64_t reference_input)

Applies the function. Returns TimelineRate::kOverflow on overflow.

Defined at line 70 of file ../../src/media/audio/lib/timeline/timeline_function.h

TimelineFunction Inverse ()

Returns a timeline function that is the inverse of this timeline function.

Defined at line 73 of file ../../src/media/audio/lib/timeline/timeline_function.h

int64_t subject_time ()

Defined at line 78 of file ../../src/media/audio/lib/timeline/timeline_function.h

int64_t reference_time ()

Defined at line 79 of file ../../src/media/audio/lib/timeline/timeline_function.h

const TimelineRate & rate ()

Defined at line 81 of file ../../src/media/audio/lib/timeline/timeline_function.h

uint64_t subject_delta ()

Defined at line 83 of file ../../src/media/audio/lib/timeline/timeline_function.h

uint64_t reference_delta ()

Defined at line 84 of file ../../src/media/audio/lib/timeline/timeline_function.h