head-management: add format-info-v1 extension

src/ifs/head_management/head_management_macros.rs

@@ -401,4 +401,5 @@ declare_extensions! {
     non_desktop_info_v1: NonDesktopInfoV1,
     vrr_state_v1: VrrStateV1,
     tearing_state_v1: TearingStateV1,
+    format_info_v1: FormatInfoV1,
 }

src/ifs/head_management/jay_head_ext.rs

@@ -5,6 +5,7 @@ pub(super) mod jay_head_ext_compositor_space_scaler_v1;
 pub(super) mod jay_head_ext_compositor_space_transformer_v1;
 pub(super) mod jay_head_ext_connector_info_v1;
 pub(super) mod jay_head_ext_core_info_v1;
+pub(super) mod jay_head_ext_format_info_v1;
 pub(super) mod jay_head_ext_mode_info_v1;
 pub(super) mod jay_head_ext_mode_setter_v1;
 pub(super) mod jay_head_ext_non_desktop_info_v1;

src/ifs/head_management/jay_head_ext/jay_head_ext_format_info_v1.rs

@@ -0,0 +1,49 @@
+use {
+    crate::{
+        ifs::head_management::HeadState,
+        wire::{
+            jay_head_ext_format_info_v1::{Format, JayHeadExtFormatInfoV1RequestHandler},
+            jay_head_manager_ext_format_info_v1::JayHeadManagerExtFormatInfoV1RequestHandler,
+        },
+    },
+    std::rc::Rc,
+};
+
+impl_format_info_v1! {
+    version = 1,
+    after_announce = after_announce,
+    after_transaction = after_transaction,
+}
+
+impl HeadName {
+    fn after_announce(&self, shared: &HeadState) {
+        self.send_format(shared);
+    }
+
+    fn after_transaction(&self, shared: &HeadState, tran: &HeadState) {
+        if shared.format != tran.format {
+            self.send_format(shared);
+        }
+    }
+
+    pub(in super::super) fn send_format(&self, state: &HeadState) {
+        self.client.event(Format {
+            self_id: self.id,
+            format: state.format.drm,
+        });
+    }
+}
+
+impl JayHeadManagerExtFormatInfoV1RequestHandler for MgrName {
+    type Error = ErrorName;
+
+    mgr_common_req!();
+}
+
+impl JayHeadExtFormatInfoV1RequestHandler for HeadName {
+    type Error = ErrorName;
+
+    head_common_req!();
+}
+
+error!();