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video: add VideoMeta::get_plane_{height,size}

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Fix #299
This commit is contained in:
Guillaume Desmottes 2020-12-03 10:46:48 +01:00
parent dd23ac7093
commit 6fbe7a1739
1 changed files with 55 additions and 0 deletions
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55
gstreamer-video/src/video_meta.rs
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@ -153,6 +153,42 @@ impl VideoMeta {
pub fn get_stride(&self) -> &[i32] {
&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_plane_size(&self) -> Result<[usize; crate::VIDEO_MAX_PLANES], glib::BoolError> {
let mut plane_size = [0; crate::VIDEO_MAX_PLANES];
unsafe {
glib::glib_result_from_gboolean!(
ffi::gst_video_meta_get_plane_size(
&self.0 as *const _ as usize as *mut _,
plane_size.as_mut_ptr(),
),
"Failed to get plane size"
)?;
}
Ok(plane_size)
}
#[cfg(any(feature = "v1_18", feature = "dox"))]
#[cfg_attr(feature = "dox", doc(cfg(feature = "v1_18")))]
pub fn get_plane_height(&self) -> Result<[u32; crate::VIDEO_MAX_PLANES], glib::BoolError> {
let mut plane_height = [0; crate::VIDEO_MAX_PLANES];
unsafe {
glib::glib_result_from_gboolean!(
ffi::gst_video_meta_get_plane_height(
&self.0 as *const _ as usize as *mut _,
plane_height.as_mut_ptr(),
),
"Failed to get plane height"
)?;
}
Ok(plane_height)
}
}
unsafe impl MetaAPI for VideoMeta {
@ -778,4 +814,23 @@ mod tests {
assert_eq!(meta.get_stride(), &[320 * 4]);
}
}
#[test]
#[cfg(feature = "v1_18")]
fn test_vide_meta_alignment() {
gst::init().unwrap();
let mut buffer = gst::Buffer::with_size(115200).unwrap();
let meta = VideoMeta::add(
buffer.get_mut().unwrap(),
crate::VideoFrameFlags::empty(),
crate::VideoFormat::Nv12,
320,
240,
)
.unwrap();
assert_eq!(meta.get_plane_size().unwrap(), [76800, 38400, 0, 0]);
assert_eq!(meta.get_plane_height().unwrap(), [240, 120, 0, 0]);
}
}