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video: Add bindings for calculate_display_ratio()
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1 changed files with 35 additions and 1 deletions
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@ -11,9 +11,10 @@ use gst_sys;
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use gst_video_sys;
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use glib;
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use glib::translate::{from_glib_full, ToGlib, ToGlibPtr};
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use glib::translate::{from_glib, from_glib_full, ToGlib, ToGlibPtr};
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use gst;
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use std::mem;
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use std::ptr;
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pub fn convert_sample(
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@ -140,6 +141,39 @@ pub fn convert_sample_future(
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Box::pin(future)
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}
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pub fn calculate_display_ratio(
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video_width: u32,
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video_height: u32,
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video_par: gst::Fraction,
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display_par: gst::Fraction,
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) -> Option<gst::Fraction> {
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skip_assert_initialized!();
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unsafe {
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let mut dar_n = mem::MaybeUninit::uninit();
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let mut dar_d = mem::MaybeUninit::uninit();
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let res: bool = from_glib(gst_video_sys::gst_video_calculate_display_ratio(
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dar_n.as_mut_ptr(),
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dar_d.as_mut_ptr(),
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video_width,
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video_height,
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*video_par.numer() as u32,
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*video_par.denom() as u32,
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*display_par.numer() as u32,
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*display_par.denom() as u32,
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));
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if res {
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Some(gst::Fraction::new(
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dar_n.assume_init() as i32,
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dar_d.assume_init() as i32,
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))
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} else {
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None
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}
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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