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video: add alignment API to VideoMeta

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This commit is contained in:
Guillaume Desmottes 2020-12-03 11:37:41 +01:00
parent c529d4d4ae
commit 8b9ef8b109
1 changed files with 79 additions and 0 deletions
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79
gstreamer-video/src/video_meta.rs
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@ -154,6 +154,18 @@ impl VideoMeta {
&self.0.stride[0..(self.0.n_planes as usize)]
}
#[cfg(any(feature = "v1_18", feature = "dox"))]
#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
pub fn get_alignment(&self) -> crate::VideoAlignment {
crate::VideoAlignment::new(
self.0.alignment.padding_top,
self.0.alignment.padding_bottom,
self.0.alignment.padding_left,
self.0.alignment.padding_right,
&self.0.alignment.stride_align,
)
}
#[cfg(any(feature = "v1_18", feature = "dox"))]
#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
pub fn get_plane_size(&self) -> Result<[usize; crate::VIDEO_MAX_PLANES], glib::BoolError> {
@ -189,6 +201,20 @@ impl VideoMeta {
Ok(plane_height)
}
#[cfg(any(feature = "v1_18", feature = "dox"))]
#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
pub fn set_alignment(
&mut self,
alignment: &crate::VideoAlignment,
) -> Result<(), glib::BoolError> {
unsafe {
glib::glib_result_from_gboolean!(
ffi::gst_video_meta_set_alignment(&mut self.0, alignment.0),
"Failed to set alignment on VideoMeta"
)
}
}
}
unsafe impl MetaAPI for VideoMeta {
@ -830,7 +856,60 @@ mod tests {
)
.unwrap();
let alig = meta.get_alignment();
assert_eq!(alig, crate::VideoAlignment::new(0, 0, 0, 0, &[0, 0, 0, 0]));
assert_eq!(meta.get_plane_size().unwrap(), [76800, 38400, 0, 0]);
assert_eq!(meta.get_plane_height().unwrap(), [240, 120, 0, 0]);
/* horizontal padding */
let mut info = crate::VideoInfo::builder(crate::VideoFormat::Nv12, 320, 240)
.build()
.expect("Failed to create VideoInfo");
let mut alig = crate::VideoAlignment::new(0, 0, 2, 6, &[0, 0, 0, 0]);
info.align(&mut alig).unwrap();
let mut meta = VideoMeta::add_full(
buffer.get_mut().unwrap(),
crate::VideoFrameFlags::empty(),
crate::VideoFormat::Nv12,
info.width(),
info.height(),
info.offset(),
info.stride(),
)
.unwrap();
meta.set_alignment(&alig).unwrap();
let alig = meta.get_alignment();
assert_eq!(alig, crate::VideoAlignment::new(0, 0, 2, 6, &[0, 0, 0, 0]));
assert_eq!(meta.get_plane_size().unwrap(), [78720, 39360, 0, 0]);
assert_eq!(meta.get_plane_height().unwrap(), [240, 120, 0, 0]);
/* vertical alignment */
let mut info = crate::VideoInfo::builder(crate::VideoFormat::Nv12, 320, 240)
.build()
.expect("Failed to create VideoInfo");
let mut alig = crate::VideoAlignment::new(2, 6, 0, 0, &[0, 0, 0, 0]);
info.align(&mut alig).unwrap();
let mut meta = VideoMeta::add_full(
buffer.get_mut().unwrap(),
crate::VideoFrameFlags::empty(),
crate::VideoFormat::Nv12,
info.width(),
info.height(),
info.offset(),
info.stride(),
)
.unwrap();
meta.set_alignment(&alig).unwrap();
let alig = meta.get_alignment();
assert_eq!(alig, crate::VideoAlignment::new(2, 6, 0, 0, &[0, 0, 0, 0]));
assert_eq!(meta.get_plane_size().unwrap(), [79360, 39680, 0, 0]);
assert_eq!(meta.get_plane_height().unwrap(), [248, 124, 0, 0]);
}
}