alpha2_native_gpu/
import.rs

1//! Platform-neutral descriptions used while importing native image planes.
2
3/// Supported decoded plane organizations.
4#[derive(Copy, Clone, Debug, Eq, PartialEq)]
5pub enum NativePlaneLayout {
6    /// Three independent 8-bit R8 images.
7    I420,
8    /// 8-bit R8 luma plus one interleaved RG8 chroma image.
9    Nv12,
10    /// 10-bit R16 luma plus one interleaved RG16 chroma image, left-aligned in 16-bit
11    /// containers.
12    P010,
13}
14
15impl NativePlaneLayout {
16    /// Significant bits per component.
17    #[must_use]
18    pub const fn bit_depth(self) -> u8 {
19        match self {
20            Self::I420 | Self::Nv12 => 8,
21            Self::P010 => 10,
22        }
23    }
24
25    /// Bytes per coded pixel across all planes, as a numerator over 2.
26    #[must_use]
27    pub const fn bytes_per_pixel_numerator(self) -> u64 {
28        match self {
29            // 4:2:0 stores 1.5 samples per pixel; 10-bit doubles the container.
30            Self::I420 | Self::Nv12 => 3,
31            Self::P010 => 6,
32        }
33    }
34}
35
36/// One opaque native plane before it is wrapped by the active GPU backend.
37#[derive(Copy, Clone, Debug, Eq, PartialEq)]
38pub struct ImportedPlaneDescriptor {
39    /// Backend-native image handle.
40    pub image: u64,
41    /// Backend-native image format.
42    pub format: u32,
43    /// Plane width in samples.
44    pub width: u32,
45    /// Plane height in samples.
46    pub height: u32,
47}
alpha2_native_gpu/import.rs

alpha2_native_gpu/
import.rs
