SpeedProviderUtil

public static long getDurationAfterSpeedProviderApplied(
    SpeedProvider speedProvider,
    long durationUs
)

Returns the duration of the output when the given SpeedProvider is applied given an input stream with the given durationUs.

public static long getNextSpeedChangeSamplePosition(
    SpeedProvider speedProvider,
    long samplePosition,
    int sampleRate
)

Returns the sample position of the next speed change or INDEX_UNSET if none is set.

If the next speed change falls between sample boundaries, this method will return the next closest sample position, which ensures that speed regions stay consistent with getSampleAlignedSpeed.

public static float getSampleAlignedSpeed(
    SpeedProvider speedProvider,
    long samplePosition,
    int sampleRate
)

Returns the speed at the specified sample position.

This method is consistent with the alignment done by getNextSpeedChangeSamplePosition.