1 files changed, 143 insertions, 0 deletions
diff --git a/src/control/framebuffer.rs b/src/control/framebuffer.rs
new file mode 100644
index 0000000..1e80ceb
--- /dev/null
+++ b/src/control/framebuffer.rs
@@ -0,0 +1,143 @@
+//! # Framebuffer
+//!
+//! Process specific GPU buffers that can be attached to a plane.
+
+use crate::buffer;
+use crate::control;
+use drm_ffi as ffi;
+use drm_fourcc::{DrmFourcc, DrmModifier};
+
+/// A handle to a framebuffer
+#[repr(transparent)]
+#[derive(Copy, Clone, Hash, PartialEq, Eq)]
+pub struct Handle(control::RawResourceHandle);
+
+// Safety: Handle is repr(transparent) over NonZeroU32
+unsafe impl bytemuck::ZeroableInOption for Handle {}
+unsafe impl bytemuck::PodInOption for Handle {}
+
+impl From<Handle> for control::RawResourceHandle {
+    fn from(handle: Handle) -> Self {
+        handle.0
+    }
+}
+
+impl From<Handle> for u32 {
+    fn from(handle: Handle) -> Self {
+        handle.0.into()
+    }
+}
+
+impl From<control::RawResourceHandle> for Handle {
+    fn from(handle: control::RawResourceHandle) -> Self {
+        Handle(handle)
+    }
+}
+
+impl control::ResourceHandle for Handle {
+    const FFI_TYPE: u32 = ffi::DRM_MODE_OBJECT_FB;
+}
+
+impl std::fmt::Debug for Handle {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+        f.debug_tuple("framebuffer::Handle").field(&self.0).finish()
+    }
+}
+
+/// Information about a framebuffer
+#[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)]
+pub struct Info {
+    pub(crate) handle: Handle,
+    pub(crate) size: (u32, u32),
+    pub(crate) pitch: u32,
+    pub(crate) bpp: u32,
+    pub(crate) depth: u32,
+    pub(crate) buffer: Option<buffer::Handle>,
+}
+
+impl Info {
+    /// Returns the handle to this framebuffer.
+    pub fn handle(&self) -> Handle {
+        self.handle
+    }
+
+    /// Returns the size of this framebuffer.
+    pub fn size(&self) -> (u32, u32) {
+        self.size
+    }
+
+    /// Returns the pitch of this framebuffer.
+    pub fn pitch(&self) -> u32 {
+        self.pitch
+    }
+
+    /// Returns the bits-per-pixel of this framebuffer.
+    pub fn bpp(&self) -> u32 {
+        self.bpp
+    }
+
+    /// Returns the depth of this framebuffer.
+    pub fn depth(&self) -> u32 {
+        self.depth
+    }
+
+    /// Returns the buffer handle of this framebuffer.
+    pub fn buffer(&self) -> Option<buffer::Handle> {
+        self.buffer
+    }
+}
+
+/// Information about a framebuffer (with modifiers)
+#[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)]
+pub struct PlanarInfo {
+    pub(crate) handle: Handle,
+    pub(crate) size: (u32, u32),
+    pub(crate) pixel_format: DrmFourcc,
+    pub(crate) flags: control::FbCmd2Flags,
+    pub(crate) buffers: [Option<buffer::Handle>; 4],
+    pub(crate) pitches: [u32; 4],
+    pub(crate) offsets: [u32; 4],
+    pub(crate) modifier: Option<DrmModifier>,
+}
+
+impl PlanarInfo {
+    /// Returns the handle to this framebuffer.
+    pub fn handle(&self) -> Handle {
+        self.handle
+    }
+
+    /// Returns the size of this framebuffer.
+    pub fn size(&self) -> (u32, u32) {
+        self.size
+    }
+
+    /// Returns the pixel format of this framebuffer.
+    pub fn pixel_format(&self) -> DrmFourcc {
+        self.pixel_format
+    }
+
+    /// Returns the flags of this framebuffer.
+    pub fn flags(&self) -> control::FbCmd2Flags {
+        self.flags
+    }
+
+    /// Returns the buffer handles of this framebuffer.
+    pub fn buffers(&self) -> [Option<buffer::Handle>; 4] {
+        self.buffers
+    }
+
+    /// Returns the pitches of this framebuffer.
+    pub fn pitches(&self) -> [u32; 4] {
+        self.pitches
+    }
+
+    /// Returns the offsets of this framebuffer.
+    pub fn offsets(&self) -> [u32; 4] {
+        self.offsets
+    }
+
+    /// Returns the modifier of this framebuffer.
+    pub fn modifier(&self) -> Option<DrmModifier> {
+        self.modifier
+    }
+}