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video: Use nested [[f32; 4]; 4] slices for the affine transformation meta instead of [f32; 16]

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This commit is contained in:
Sebastian Dröge 2021-09-25 15:16:53 +03:00
parent 4e235b0492
commit e5977c2d20
1 changed files with 15 additions and 8 deletions
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23
gstreamer-video/src/video_meta.rs
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@ -461,7 +461,7 @@ impl VideoAffineTransformationMeta {
#[doc(alias = "gst_buffer_add_meta")]
pub fn add<'a>(
buffer: &'a mut gst::BufferRef,
matrix: Option<&[f32; 16]>,
matrix: Option<&[[f32; 4]; 4]>,
) -> gst::MetaRefMut<'a, Self, gst::meta::Standalone> {
skip_assert_initialized!();
unsafe {
@ -473,7 +473,9 @@ impl VideoAffineTransformationMeta {
if let Some(matrix) = matrix {
let meta = &mut *meta;
meta.matrix.copy_from_slice(matrix);
for (i, o) in Iterator::zip(matrix.iter().flatten(), meta.matrix.iter_mut()) {
*o = *i;
}
}
Self::from_mut_ptr(buffer, meta)
@ -481,18 +483,23 @@ impl VideoAffineTransformationMeta {
}
#[doc(alias = "get_matrix")]
pub fn matrix(&self) -> &[f32; 16] {
&self.0.matrix
pub fn matrix(&self) -> &[[f32; 4]; 4] {
unsafe { &*(&self.0.matrix as *const [f32; 16] as *const [[f32; 4]; 4]) }
}
pub fn set_matrix(&mut self, matrix: &[f32; 16]) {
self.0.matrix.copy_from_slice(matrix);
pub fn set_matrix(&mut self, matrix: &[[f32; 4]; 4]) {
for (i, o) in Iterator::zip(matrix.iter().flatten(), self.0.matrix.iter_mut()) {
*o = *i;
}
}
#[doc(alias = "gst_video_affine_transformation_meta_apply_matrix")]
pub fn apply_matrix(&mut self, matrix: &[f32; 16]) {
pub fn apply_matrix(&mut self, matrix: &[[f32; 4]; 4]) {
unsafe {
ffi::gst_video_affine_transformation_meta_apply_matrix(&mut self.0, matrix);
ffi::gst_video_affine_transformation_meta_apply_matrix(
&mut self.0,
matrix as *const [[f32; 4]; 4] as *const [f32; 16],
);
}
}
}