allocator: move buffer allocation traits into workspace crate

Cargo.lock

@@ -630,6 +630,16 @@ dependencies = [
  "smallvec",
 ]
 
+[[package]]
+name = "jay-allocator"
+version = "0.1.0"
+dependencies = [
+ "jay-formats",
+ "jay-video-types",
+ "thiserror",
+ "uapi",
+]
+
 [[package]]
 name = "jay-ash"
 version = "0.3.0+1.4.344"
@@ -710,6 +720,7 @@ dependencies = [
  "indexmap",
  "isnt 0.2.0",
  "jay-algorithms",
+ "jay-allocator",
  "jay-ash",
  "jay-async-engine",
  "jay-bufio",

Cargo.toml

@@ -46,6 +46,7 @@ members = [
     "gfx-types",
     "theme",
     "clientmem",
+    "allocator",
     "pango",
     "libinput",
     "toml-config",
@@ -95,6 +96,7 @@ jay-video-types = { version = "0.1.0", path = "video-types" }
 jay-gfx-types = { version = "0.1.0", path = "gfx-types" }
 jay-theme = { version = "0.1.0", path = "theme" }
 jay-clientmem = { version = "0.1.0", path = "clientmem" }
+jay-allocator = { version = "0.1.0", path = "allocator" }
 jay-pango = { version = "0.1.0", path = "pango" }
 jay-libinput = { version = "0.1.0", path = "libinput" }
 

allocator/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "jay-allocator"
+version = "0.1.0"
+edition = "2024"
+license = "GPL-3.0-only"
+
+[dependencies]
+jay-formats = { version = "0.1.0", path = "../formats" }
+jay-video-types = { version = "0.1.0", path = "../video-types" }
+
+thiserror = "2.0.11"
+uapi = "0.2.13"

allocator/src/lib.rs

@@ -0,0 +1,95 @@
+use {
+    jay_formats::Format,
+    jay_video_types::{
+        Modifier,
+        dmabuf::{DmaBuf, DmaBufIds},
+    },
+    std::{
+        error::Error,
+        ops::{BitOr, BitOrAssign, Not},
+        rc::Rc,
+    },
+    thiserror::Error,
+    uapi::{OwnedFd, c},
+};
+
+#[derive(Debug, Error)]
+#[error(transparent)]
+pub struct AllocatorError(#[from] pub Box<dyn Error + Send>);
+
+#[derive(Copy, Clone, Debug, Eq, PartialEq)]
+pub struct BufferUsage(u32);
+
+impl BufferUsage {
+    pub fn none() -> Self {
+        Self(0)
+    }
+
+    pub fn contains(self, other: Self) -> bool {
+        self.0 & other.0 == other.0
+    }
+}
+
+impl BitOr for BufferUsage {
+    type Output = Self;
+
+    fn bitor(self, rhs: Self) -> Self::Output {
+        Self(self.0 | rhs.0)
+    }
+}
+
+impl BitOrAssign for BufferUsage {
+    fn bitor_assign(&mut self, rhs: Self) {
+        self.0 |= rhs.0;
+    }
+}
+
+impl Not for BufferUsage {
+    type Output = Self;
+
+    fn not(self) -> Self::Output {
+        Self(!self.0)
+    }
+}
+
+pub const BO_USE_SCANOUT: BufferUsage = BufferUsage(1 << 0);
+pub const BO_USE_CURSOR: BufferUsage = BufferUsage(1 << 1);
+pub const BO_USE_RENDERING: BufferUsage = BufferUsage(1 << 2);
+pub const BO_USE_WRITE: BufferUsage = BufferUsage(1 << 3);
+pub const BO_USE_LINEAR: BufferUsage = BufferUsage(1 << 4);
+pub const BO_USE_PROTECTED: BufferUsage = BufferUsage(1 << 5);
+
+pub trait Allocator {
+    fn drm(&self) -> Option<&dyn AllocatorDrm>;
+    fn create_bo(
+        &self,
+        dma_buf_ids: &DmaBufIds,
+        width: i32,
+        height: i32,
+        format: &'static Format,
+        modifiers: &[Modifier],
+        usage: BufferUsage,
+    ) -> Result<Rc<dyn BufferObject>, AllocatorError>;
+    fn import_dmabuf(
+        &self,
+        dmabuf: &DmaBuf,
+        usage: BufferUsage,
+    ) -> Result<Rc<dyn BufferObject>, AllocatorError>;
+}
+
+pub trait AllocatorDrm {
+    fn dev(&self) -> c::dev_t;
+    fn dup_render_fd(&self) -> Result<Rc<OwnedFd>, AllocatorError>;
+}
+
+pub trait BufferObject {
+    fn dmabuf(&self) -> &DmaBuf;
+    fn map_read(self: Rc<Self>) -> Result<Box<dyn MappedBuffer>, AllocatorError>;
+    fn map_write(self: Rc<Self>) -> Result<Box<dyn MappedBuffer>, AllocatorError>;
+}
+
+pub trait MappedBuffer {
+    unsafe fn data(&self) -> &[u8];
+    fn data_ptr(&self) -> *mut u8;
+    fn stride(&self) -> i32;
+}

src/allocator.rs

@@ -1,57 +1,15 @@
-use {
-    crate::{
-        format::Format,
-        video::{
-            Modifier,
-            dmabuf::{DmaBuf, DmaBufIds},
-            drm::Drm,
-        },
-    },
-    std::{error::Error, rc::Rc},
-    thiserror::Error,
-};
+pub use jay_allocator::*;
 
-#[derive(Debug, Error)]
-#[error(transparent)]
-pub struct AllocatorError(#[from] pub Box<dyn Error + Send>);
+use crate::video::drm::Drm;
 
-bitflags! {
-    BufferUsage: u32;
-        BO_USE_SCANOUT,
-        BO_USE_CURSOR,
-        BO_USE_RENDERING,
-        BO_USE_WRITE,
-        BO_USE_LINEAR,
-        BO_USE_PROTECTED,
-}
-
-pub trait Allocator {
-    fn drm(&self) -> Option<&Drm>;
-    fn create_bo(
-        &self,
-        dma_buf_ids: &DmaBufIds,
-        width: i32,
-        height: i32,
-        format: &'static Format,
-        modifiers: &[Modifier],
-        usage: BufferUsage,
-    ) -> Result<Rc<dyn BufferObject>, AllocatorError>;
-    fn import_dmabuf(
-        &self,
-        dmabuf: &DmaBuf,
-        usage: BufferUsage,
-    ) -> Result<Rc<dyn BufferObject>, AllocatorError>;
-}
-
-pub trait BufferObject {
-    fn dmabuf(&self) -> &DmaBuf;
-    fn map_read(self: Rc<Self>) -> Result<Box<dyn MappedBuffer>, AllocatorError>;
-    fn map_write(self: Rc<Self>) -> Result<Box<dyn MappedBuffer>, AllocatorError>;
-}
-
-pub trait MappedBuffer {
-    unsafe fn data(&self) -> &[u8];
-    #[cfg_attr(not(feature = "it"), expect(dead_code))]
-    fn data_ptr(&self) -> *mut u8;
-    fn stride(&self) -> i32;
+impl AllocatorDrm for Drm {
+    fn dev(&self) -> uapi::c::dev_t {
+        self.dev()
+    }
+
+    fn dup_render_fd(&self) -> Result<std::rc::Rc<uapi::OwnedFd>, AllocatorError> {
+        self.dup_render()
+            .map(|drm| drm.fd().clone())
+            .map_err(|e| AllocatorError(Box::new(e)))
+    }
 }

src/gfx_apis/vulkan/bo_allocator.rs

@@ -1,8 +1,8 @@
 use {
     crate::{
         allocator::{
-            Allocator, AllocatorError, BO_USE_RENDERING, BO_USE_WRITE, BufferObject, BufferUsage,
-            MappedBuffer,
+            Allocator, AllocatorDrm, AllocatorError, BO_USE_RENDERING, BO_USE_WRITE, BufferObject,
+            BufferUsage, MappedBuffer,
         },
         format::Format,
         gfx_apis::vulkan::{
@@ -429,7 +429,7 @@ impl VulkanBoAllocator {
 }
 
 impl Allocator for VulkanBoAllocator {
-    fn drm(&self) -> Option<&Drm> {
+    fn drm(&self) -> Option<&dyn AllocatorDrm> {
         Some(&self.data.drm)
     }
 

src/ifs/jay_render_ctx.rs

@@ -58,8 +58,8 @@ impl JayRenderCtx {
             }
             let allocator = ctx.allocator();
             match allocator.drm() {
-                Some(drm) => match drm.dup_render() {
-                    Ok(d) => fd = Some(d.fd().clone()),
+                Some(drm) => match drm.dup_render_fd() {
+                    Ok(d) => fd = Some(d),
                     Err(e) => {
                         log::error!("Could not dup drm fd: {}", ErrorFmt(e));
                     }

src/screenshoter.rs

@@ -6,7 +6,6 @@ use {
         scale::Scale,
         state::State,
         tree::Transform,
-        video::drm::DrmError,
     },
     indexmap::IndexMap,
     std::{ops::Deref, rc::Rc},
@@ -24,8 +23,6 @@ pub enum ScreenshooterError {
     AllocatorError(#[from] AllocatorError),
     #[error(transparent)]
     RenderError(#[from] GfxError),
-    #[error(transparent)]
-    DrmError(#[from] DrmError),
     #[error("Render context does not support XRGB8888")]
     XRGB8888,
     #[error("Render context supports no modifiers for XRGB8888 rendering")]
@@ -93,7 +90,7 @@ pub fn take_screenshot(
         state.color_manager.srgb_linear(),
     )?;
     let drm = match allocator.drm() {
-        Some(drm) => Some(drm.dup_render()?.fd().clone()),
+        Some(drm) => Some(drm.dup_render_fd()?),
         _ => None,
     };
     Ok(Screenshot { drm, bo })

src/udmabuf.rs

@@ -13,7 +13,6 @@ use {
         video::{
             LINEAR_MODIFIER, LINEAR_STRIDE_ALIGN, Modifier,
             dmabuf::{DmaBuf, DmaBufIds, DmaBufPlane, PlaneVec},
-            drm::Drm,
         },
     },
     std::{ptr, rc::Rc},
@@ -169,7 +168,7 @@ impl Udmabuf {
 }
 
 impl Allocator for Udmabuf {
-    fn drm(&self) -> Option<&Drm> {
+    fn drm(&self) -> Option<&dyn crate::allocator::AllocatorDrm> {
         None
     }
 

src/video/gbm.rs

@@ -3,7 +3,7 @@
 use {
     crate::{
         allocator::{
-            Allocator, AllocatorError, BO_USE_CURSOR, BO_USE_LINEAR, BO_USE_PROTECTED,
+            Allocator, AllocatorDrm, AllocatorError, BO_USE_CURSOR, BO_USE_LINEAR, BO_USE_PROTECTED,
             BO_USE_RENDERING, BO_USE_SCANOUT, BO_USE_WRITE, BufferObject, BufferUsage,
             MappedBuffer,
         },
@@ -323,7 +323,7 @@ impl GbmDevice {
 }
 
 impl Allocator for GbmDevice {
-    fn drm(&self) -> Option<&Drm> {
+    fn drm(&self) -> Option<&dyn AllocatorDrm> {
         Some(&self.drm)
     }