From 93964012e66116e66a2efb2ef4d395f1141b9f13 Mon Sep 17 00:00:00 2001
From: Simon Ser <contact@emersion.fr>
Date: Wed, 11 Aug 2021 10:00:07 +0200
Subject: [PATCH] buffer: add addon set

This allows wlr_buffer users to extend it with tjeir own state.
---
 include/wlr/types/wlr_buffer.h | 3 +++
 types/wlr_buffer.c             | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/include/wlr/types/wlr_buffer.h b/include/wlr/types/wlr_buffer.h
index 5dc8271d..b4be3226 100644
--- a/include/wlr/types/wlr_buffer.h
+++ b/include/wlr/types/wlr_buffer.h
@@ -12,6 +12,7 @@
 #include <pixman.h>
 #include <wayland-server-core.h>
 #include <wlr/render/dmabuf.h>
+#include <wlr/util/addon.h>
 
 struct wlr_buffer;
 struct wlr_renderer;
@@ -67,6 +68,8 @@ struct wlr_buffer {
 		struct wl_signal destroy;
 		struct wl_signal release;
 	} events;
+
+	struct wlr_addon_set addons;
 };
 
 struct wlr_buffer_resource_interface {
diff --git a/types/wlr_buffer.c b/types/wlr_buffer.c
index 94b42d4a..21c274c0 100644
--- a/types/wlr_buffer.c
+++ b/types/wlr_buffer.c
@@ -21,6 +21,7 @@ void wlr_buffer_init(struct wlr_buffer *buffer,
 	buffer->height = height;
 	wl_signal_init(&buffer->events.destroy);
 	wl_signal_init(&buffer->events.release);
+	wlr_addon_set_init(&buffer->addons);
 }
 
 static void buffer_consider_destroy(struct wlr_buffer *buffer) {
@@ -31,6 +32,7 @@ static void buffer_consider_destroy(struct wlr_buffer *buffer) {
 	assert(!buffer->accessing_data_ptr);
 
 	wlr_signal_emit_safe(&buffer->events.destroy, NULL);
+	wlr_addon_set_finish(&buffer->addons);
 
 	buffer->impl->destroy(buffer);
 }