kiteffmpeg/io.github.yuroyami.kiteffmpeg/Rational

Rational

FFmpeg's AVRational: an exact fraction. Use it for time-bases, frame rates and aspect ratios. Float conversion is lossy; do all arithmetic on the rational form when possible.

Always stored normalized: reduced by gcd, denominator positive. Rational(2, 4) == Rational(1, 2).

Types

Companion

object Companion

Properties

val asDouble: Double

val asFloat: Float

val den: Int

val inverse: Rational

Reciprocal: Rational(1, 30).inverse == Rational(30, 1).

num

val num: Int

Functions

compareTo

open operator override fun compareTo(other: Rational): Int

Exact comparison: Rational(1, 30) < Rational(1, 25).

div

operator fun div(other: Rational): Rational

equals

open operator override fun equals(other: Any?): Boolean

hashCode

open override fun hashCode(): Int

minus

operator fun minus(other: Rational): Rational

plus

operator fun plus(other: Rational): Rational

times

operator fun times(other: Rational): Rational

operator fun times(scalar: Long): Long

scalar * num / den with a Long intermediate. Multiplies after reducing scalar against den first, so e.g. pts * Rational(1, 1_000_000) stays exact far beyond what naive scalar * num would overflow at. For timestamp conversion between two arbitrary time-bases prefer the native av_rescale_q path (128-bit).

toString

open override fun toString(): String

unaryMinus

operator fun unaryMinus(): Rational

Negation, widened before it negates.