video: move drm object ids into type crate

video-types/src/drm.rs

@@ -0,0 +1,48 @@
+pub const DRM_MODE_OBJECT_CRTC: u32 = 0xcccccccc;
+pub const DRM_MODE_OBJECT_CONNECTOR: u32 = 0xc0c0c0c0;
+pub const DRM_MODE_OBJECT_ENCODER: u32 = 0xe0e0e0e0;
+pub const DRM_MODE_OBJECT_PROPERTY: u32 = 0xb0b0b0b0;
+pub const DRM_MODE_OBJECT_FB: u32 = 0xfbfbfbfb;
+pub const DRM_MODE_OBJECT_BLOB: u32 = 0xbbbbbbbb;
+pub const DRM_MODE_OBJECT_PLANE: u32 = 0xeeeeeeee;
+
+pub trait DrmObject {
+    const TYPE: u32;
+    const NONE: Self;
+    fn id(&self) -> u32;
+    fn is_some(&self) -> bool;
+    fn is_none(&self) -> bool;
+}
+
+macro_rules! drm_obj {
+    ($name:ident, $ty:expr) => {
+        #[repr(transparent)]
+        #[derive(Copy, Clone, Debug, Eq, PartialEq, Hash, Default, Ord, PartialOrd)]
+        pub struct $name(pub u32);
+
+        impl DrmObject for $name {
+            const TYPE: u32 = $ty;
+            const NONE: Self = Self(0);
+
+            fn id(&self) -> u32 {
+                self.0
+            }
+
+            fn is_some(&self) -> bool {
+                self.0 != 0
+            }
+
+            fn is_none(&self) -> bool {
+                self.0 == 0
+            }
+        }
+    };
+}
+
+drm_obj!(DrmCrtc, DRM_MODE_OBJECT_CRTC);
+drm_obj!(DrmConnector, DRM_MODE_OBJECT_CONNECTOR);
+drm_obj!(DrmEncoder, DRM_MODE_OBJECT_ENCODER);
+drm_obj!(DrmProperty, DRM_MODE_OBJECT_PROPERTY);
+drm_obj!(DrmFb, DRM_MODE_OBJECT_FB);
+drm_obj!(DrmBlob, DRM_MODE_OBJECT_BLOB);
+drm_obj!(DrmPlane, DRM_MODE_OBJECT_PLANE);

video-types/src/lib.rs

@@ -1,3 +1,4 @@
+pub mod drm;
 pub mod dmabuf;
 
 pub type Modifier = u64;