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use scene::RetimeConfig;
use time::MediaTime;
pub const DEFAULT_RETIME_RATE: f64 = 1.0;
pub const MIN_RETIME_RATE: f64 = 0.01;
pub const MAX_RETIME_RATE: f64 = 5.0;
pub fn clamp_retime_rate(rate: f64) -> f64 {
if !rate.is_finite() || rate <= 0.0 {
return DEFAULT_RETIME_RATE;
}
rate.clamp(MIN_RETIME_RATE, MAX_RETIME_RATE)
}
pub fn can_maintain_pitch(rate: f64) -> bool {
rate.is_finite() && rate > 0.0
}
pub fn should_maintain_pitch(rate: f64, maintain_pitch: Option<bool>) -> bool {
maintain_pitch == Some(true) && can_maintain_pitch(rate)
}
fn safe_rate(retime: Option<&RetimeConfig>) -> f64 {
clamp_retime_rate(retime.map(|retime| retime.rate).unwrap_or(1.0))
}
pub fn get_source_time_at_clip_time(clip_time: f64, retime: Option<&RetimeConfig>) -> f64 {
clip_time * safe_rate(retime)
}
pub fn get_clip_time_at_source_time(source_time: f64, retime: Option<&RetimeConfig>) -> f64 {
source_time / safe_rate(retime)
}
pub fn get_effective_rate_at(retime: Option<&RetimeConfig>) -> f64 {
safe_rate(retime)
}
pub fn get_timeline_duration_for_source_span(
source_span: f64,
retime: Option<&RetimeConfig>,
) -> f64 {
if source_span <= 0.0 {
return 0.0;
}
source_span / safe_rate(retime)
}
pub fn get_source_span_at_clip_time(clip_time: f64, retime: Option<&RetimeConfig>) -> f64 {
get_source_time_at_clip_time(clip_time, retime).max(0.0)
}
pub fn split_retime_at_clip_time(
retime: Option<&RetimeConfig>,
) -> (Option<RetimeConfig>, Option<RetimeConfig>) {
(retime.copied(), retime.copied())
}
pub fn adjust_retime_for_trim_change(retime: Option<&RetimeConfig>) -> Option<RetimeConfig> {
retime.copied()
}
pub fn round_media_time(time: f64) -> MediaTime {
let rounded_magnitude = time.abs().round();
if rounded_magnitude == 0.0 {
return MediaTime::ZERO;
}
let magnitude = rounded_magnitude as i64;
MediaTime::from_ticks(if time < 0.0 { -magnitude } else { magnitude })
}
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