wayland: add a generic wayland client

src/wl_usr/usr_ifs/usr_linux_buffer_params.rs

@@ -0,0 +1,90 @@
+use {
+    crate::{
+        utils::{
+            buffd::{MsgParser, MsgParserError},
+            clonecell::CloneCell,
+        },
+        video::dmabuf::DmaBuf,
+        wire::{zwp_linux_buffer_params_v1::*, ZwpLinuxBufferParamsV1Id},
+        wl_usr::{usr_ifs::usr_wl_buffer::UsrWlBuffer, usr_object::UsrObject, UsrCon},
+    },
+    std::{ops::Deref, rc::Rc},
+};
+
+pub struct UsrLinuxBufferParams {
+    pub id: ZwpLinuxBufferParamsV1Id,
+    pub con: Rc<UsrCon>,
+    pub owner: CloneCell<Option<Rc<dyn UsrLinuxBufferParamsOwner>>>,
+}
+
+pub trait UsrLinuxBufferParamsOwner {
+    fn created(&self, buffer: Rc<UsrWlBuffer>) {
+        buffer.con.remove_obj(buffer.deref());
+    }
+
+    fn failed(&self) {}
+}
+
+impl UsrLinuxBufferParams {
+    pub fn create(&self, buf: &DmaBuf) {
+        for (idx, plane) in buf.planes.iter().enumerate() {
+            self.con.request(Add {
+                self_id: self.id,
+                fd: plane.fd.clone(),
+                plane_idx: idx as _,
+                offset: plane.offset,
+                stride: plane.stride,
+                modifier_hi: (buf.modifier >> 32) as _,
+                modifier_lo: buf.modifier as _,
+            });
+        }
+        self.con.request(Create {
+            self_id: self.id,
+            width: buf.width,
+            height: buf.height,
+            format: buf.format.drm,
+            flags: 0,
+        });
+    }
+
+    fn created(&self, parser: MsgParser<'_, '_>) -> Result<(), MsgParserError> {
+        let ev: Created = self.con.parse(self, parser)?;
+        let buffer = Rc::new(UsrWlBuffer {
+            id: ev.buffer,
+            con: self.con.clone(),
+            owner: Default::default(),
+        });
+        self.con.add_object(buffer.clone());
+        if let Some(owner) = self.owner.get() {
+            owner.created(buffer);
+        } else {
+            self.con.remove_obj(buffer.deref());
+        }
+        Ok(())
+    }
+
+    fn failed(&self, parser: MsgParser<'_, '_>) -> Result<(), MsgParserError> {
+        let _ev: Failed = self.con.parse(self, parser)?;
+        if let Some(owner) = self.owner.get() {
+            owner.failed();
+        }
+        Ok(())
+    }
+}
+
+usr_object_base! {
+    UsrLinuxBufferParams, ZwpLinuxBufferParamsV1;
+
+    CREATED => created,
+    FAILED => failed,
+}
+
+impl UsrObject for UsrLinuxBufferParams {
+    fn destroy(&self) {
+        self.con.request(Destroy { self_id: self.id });
+    }
+
+    fn break_loops(&self) {
+        self.owner.take();
+    }
+}