6 files changed, 149 insertions, 0 deletions
diff --git a/include/meson.build b/include/meson.build
new file mode 100644
index 0000000..4c388f0
--- /dev/null
+++ b/include/meson.build
@@ -0,0 +1 @@
+exclude_files = ['meson.build', 'config.h.in', 'version.h.in']
diff --git a/include/types/wlr_buffer.h b/include/types/wlr_buffer.h
new file mode 100644
index 0000000..59d78e9
--- /dev/null
+++ b/include/types/wlr_buffer.h
@@ -0,0 +1,84 @@
+#ifndef TYPES_WLR_BUFFER
+#define TYPES_WLR_BUFFER
+
+#include <wlr/types/wlr_buffer.h>
+
+struct wlr_shm_client_buffer {
+	struct wlr_buffer base;
+
+	uint32_t format;
+	size_t stride;
+
+	// The following fields are NULL if the client has destroyed the wl_buffer
+	struct wl_resource *resource;
+	struct wl_shm_buffer *shm_buffer;
+
+	// This is used to keep the backing storage alive after the client has
+	// destroyed the wl_buffer
+	struct wl_shm_pool *saved_shm_pool;
+	void *saved_data;
+
+	struct wl_listener resource_destroy;
+	struct wl_listener release;
+};
+
+struct wlr_shm_client_buffer *shm_client_buffer_get_or_create(
+	struct wl_resource *resource);
+
+/**
+ * A read-only buffer that holds a data pointer.
+ *
+ * This is suitable for passing raw pixel data to a function that accepts a
+ * wlr_buffer.
+ */
+struct wlr_readonly_data_buffer {
+	struct wlr_buffer base;
+
+	const void *data;
+	uint32_t format;
+	size_t stride;
+
+	void *saved_data;
+};
+
+/**
+ * Wraps a read-only data pointer into a wlr_buffer. The data pointer may be
+ * accessed until readonly_data_buffer_drop() is called.
+ */
+struct wlr_readonly_data_buffer *readonly_data_buffer_create(uint32_t format,
+		size_t stride, uint32_t width, uint32_t height, const void *data);
+/**
+ * Drops ownership of the buffer (see wlr_buffer_drop() for more details) and
+ * perform a copy of the data pointer if a consumer still has the buffer locked.
+ */
+bool readonly_data_buffer_drop(struct wlr_readonly_data_buffer *buffer);
+
+struct wlr_dmabuf_buffer {
+	struct wlr_buffer base;
+	struct wlr_dmabuf_attributes dmabuf;
+	bool saved;
+};
+
+/**
+ * Wraps a DMA-BUF into a wlr_buffer. The DMA-BUF may be accessed until
+ * dmabuf_buffer_drop() is called.
+ */
+struct wlr_dmabuf_buffer *dmabuf_buffer_create(
+	struct wlr_dmabuf_attributes *dmabuf);
+/**
+ * Drops ownership of the buffer (see wlr_buffer_drop() for more details) and
+ * takes a reference to the DMA-BUF (by dup'ing its file descriptors) if a
+ * consumer still has the buffer locked.
+ */
+bool dmabuf_buffer_drop(struct wlr_dmabuf_buffer *buffer);
+
+/**
+ * Check whether a buffer is fully opaque.
+ *
+ * When true is returned, the buffer is guaranteed to be fully opaque, but the
+ * reverse is not true: false may be returned in cases where the buffer is fully
+ * opaque.
+ */
+bool buffer_is_opaque(struct wlr_buffer *buffer);
+
+#endif
diff --git a/include/types/wlr_scene.h b/include/types/wlr_scene.h
new file mode 100644
index 0000000..64c11bc
--- /dev/null
+++ b/include/types/wlr_scene.h
@@ -0,0 +1,8 @@
+#ifndef TYPES_WLR_SCENE_H
+#define TYPES_WLR_SCENE_H
+
+#include <wlr/types/wlr_scene.h>
+
+struct wlr_scene *scene_node_get_root(struct wlr_scene_node *node);
+
+#endif
diff --git a/include/util/array.h b/include/util/array.h
new file mode 100644
index 0000000..a51bdb6
--- /dev/null
+++ b/include/util/array.h
@@ -0,0 +1,18 @@
+#ifndef UTIL_ARRAY_H
+#define UTIL_ARRAY_H
+
+#include <stdlib.h>
+#include <stdbool.h>
+#include <wayland-util.h>
+
+/**
+ * Remove a chunk of memory of the specified size at the specified offset.
+ */
+void array_remove_at(struct wl_array *arr, size_t offset, size_t size);
+
+/**
+ * Grow or shrink the array to fit the specifized size.
+ */
+bool array_realloc(struct wl_array *arr, size_t size);
+
+#endif
diff --git a/include/util/env.h b/include/util/env.h
new file mode 100644
index 0000000..6720fa8
--- /dev/null
+++ b/include/util/env.h
@@ -0,0 +1,11 @@
+#ifndef UTIL_ENV_H
+#define UTIL_ENV_H
+
+#include <stdbool.h>
+#include <unistd.h>
+
+bool env_parse_bool(const char *option);
+
+ssize_t env_parse_switch(const char *option, const char **switches);
+
+#endif
diff --git a/include/util/time.h b/include/util/time.h
new file mode 100644
index 0000000..287698d
--- /dev/null
+++ b/include/util/time.h
@@ -0,0 +1,27 @@
+#ifndef UTIL_TIME_H
+#define UTIL_TIME_H
+
+#include <time.h>
+
+/**
+ * Get the current time, in milliseconds.
+ */
+uint32_t get_current_time_msec(void);
+
+/**
+ * Convert a timespec to milliseconds.
+ */
+int64_t timespec_to_msec(const struct timespec *a);
+
+/**
+ * Convert nanoseconds to a timespec.
+ */
+void timespec_from_nsec(struct timespec *r, int64_t nsec);
+
+/**
+ * Subtracts timespec `b` from timespec `a`, and stores the difference in `r`.
+ */
+void timespec_sub(struct timespec *r, const struct timespec *a,
+		const struct timespec *b);
+
+#endif