[v4,1/3] Add wl_dmabuf protocol

Message ID 1389116504-3923-2-git-send-email-benjamin.gaignard@linaro.org
State New
Headers show

Commit Message

Benjamin Gaignard Jan. 7, 2014, 5:41 p.m.
From: Benjamin Gaignard <benjamin.gaignard@linaro.org>

It allow to use a dmabuf file descriptor in a wayland protocol.
To make as generic as possible it is up to the server to call
wl_dmabuf_send_format() and/or wl_dmabuf_send_device() to signal
it capabilities.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
---
 protocol/Makefile.am        |    6 +-
 protocol/wayland-dmabuf.xml |  128 ++++++++++++++++++++++++
 src/Makefile.am             |   12 ++-
 src/wayland-dmabuf.c        |  231 +++++++++++++++++++++++++++++++++++++++++++
 src/wayland-dmabuf.h        |  123 +++++++++++++++++++++++
 5 files changed, 496 insertions(+), 4 deletions(-)
 create mode 100644 protocol/wayland-dmabuf.xml
 create mode 100644 src/wayland-dmabuf.c
 create mode 100644 src/wayland-dmabuf.h

Patch

diff --git a/protocol/Makefile.am b/protocol/Makefile.am
index e8b6290..8c9499f 100644
--- a/protocol/Makefile.am
+++ b/protocol/Makefile.am
@@ -1,4 +1,4 @@ 
-dist_pkgdata_DATA = wayland.xml wayland.dtd
+dist_pkgdata_DATA = wayland.xml wayland-dmabuf.xml wayland.dtd
 
 if HAVE_XMLLINT
 .PHONY: validate
@@ -6,9 +6,9 @@  if HAVE_XMLLINT
 .%.xml.valid: %.xml
 	$(AM_V_GEN)$(XMLLINT) --noout --dtdvalid $(srcdir)/wayland.dtd $^ > $@
 
-validate: .wayland.xml.valid
+validate: .wayland.xml.valid .wayland-dmabuf.xml.valid
 
 all-local: validate
 
-CLEANFILES = .wayland.xml.valid
+CLEANFILES = .wayland.xml.valid .wayland-dmabuf.xml.valid
 endif
diff --git a/protocol/wayland-dmabuf.xml b/protocol/wayland-dmabuf.xml
new file mode 100644
index 0000000..f84edb5
--- /dev/null
+++ b/protocol/wayland-dmabuf.xml
@@ -0,0 +1,128 @@ 
+<?xml version="1.0" encoding="UTF-8"?>
+<protocol name="dmabuf">
+
+  <copyright>
+    Copyright © 2008-2011 Kristian Høgsberg
+    Copyright © 2010-2011 Intel Corporation
+
+    Permission to use, copy, modify, distribute, and sell this
+    software and its documentation for any purpose is hereby granted
+    without fee, provided that\n the above copyright notice appear in
+    all copies and that both that copyright notice and this permission
+    notice appear in supporting documentation, and that the name of
+    the copyright holders not be used in advertising or publicity
+    pertaining to distribution of the software without specific,
+    written prior permission.  The copyright holders make no
+    representations about the suitability of this software for any
+    purpose.  It is provided "as is" without express or implied
+    warranty.
+
+    THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+    SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+    FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+    SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+    AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+    ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+    THIS SOFTWARE.
+  </copyright>
+
+  <!-- dmabuf support. This object is created by the server and published
+       using the display's global event. -->
+  <interface name="wl_dmabuf" version="1">
+    <enum name="error">
+		<entry name="invalid_format" value="1"/>
+		<entry name="invalid_file_descriptor" value="2"/>
+    </enum>
+
+    <enum name="format">
+      <!-- The dmabuf format codes match the #defines in drm_fourcc.h.
+           The formats actually supported by the compositor will be
+           reported by the format event. -->
+      <entry name="c8" value="0x20203843"/>
+      <entry name="rgb332" value="0x38424752"/>
+      <entry name="bgr233" value="0x38524742"/>
+      <entry name="xrgb4444" value="0x32315258"/>
+      <entry name="xbgr4444" value="0x32314258"/>
+      <entry name="rgbx4444" value="0x32315852"/>
+      <entry name="bgrx4444" value="0x32315842"/>
+      <entry name="argb4444" value="0x32315241"/>
+      <entry name="abgr4444" value="0x32314241"/>
+      <entry name="rgba4444" value="0x32314152"/>
+      <entry name="bgra4444" value="0x32314142"/>
+      <entry name="xrgb1555" value="0x35315258"/>
+      <entry name="xbgr1555" value="0x35314258"/>
+      <entry name="rgbx5551" value="0x35315852"/>
+      <entry name="bgrx5551" value="0x35315842"/>
+      <entry name="argb1555" value="0x35315241"/>
+      <entry name="abgr1555" value="0x35314241"/>
+      <entry name="rgba5551" value="0x35314152"/>
+      <entry name="bgra5551" value="0x35314142"/>
+      <entry name="rgb565" value="0x36314752"/>
+      <entry name="bgr565" value="0x36314742"/>
+      <entry name="rgb888" value="0x34324752"/>
+      <entry name="bgr888" value="0x34324742"/>
+      <entry name="xrgb8888" value="0x34325258"/>
+      <entry name="xbgr8888" value="0x34324258"/>
+      <entry name="rgbx8888" value="0x34325852"/>
+      <entry name="bgrx8888" value="0x34325842"/>
+      <entry name="argb8888" value="0x34325241"/>
+      <entry name="abgr8888" value="0x34324241"/>
+      <entry name="rgba8888" value="0x34324152"/>
+      <entry name="bgra8888" value="0x34324142"/>
+      <entry name="xrgb2101010" value="0x30335258"/>
+      <entry name="xbgr2101010" value="0x30334258"/>
+      <entry name="rgbx1010102" value="0x30335852"/>
+      <entry name="bgrx1010102" value="0x30335842"/>
+      <entry name="argb2101010" value="0x30335241"/>
+      <entry name="abgr2101010" value="0x30334241"/>
+      <entry name="rgba1010102" value="0x30334152"/>
+      <entry name="bgra1010102" value="0x30334142"/>
+      <entry name="yuyv" value="0x56595559"/>
+      <entry name="yvyu" value="0x55595659"/>
+      <entry name="uyvy" value="0x59565955"/>
+      <entry name="vyuy" value="0x59555956"/>
+      <entry name="ayuv" value="0x56555941"/>
+      <entry name="nv12" value="0x3231564e"/>
+      <entry name="nv21" value="0x3132564e"/>
+      <entry name="nv16" value="0x3631564e"/>
+      <entry name="nv61" value="0x3136564e"/>
+      <entry name="yuv410" value="0x39565559"/>
+      <entry name="yvu410" value="0x39555659"/>
+      <entry name="yuv411" value="0x31315559"/>
+      <entry name="yvu411" value="0x31315659"/>
+      <entry name="yuv420" value="0x32315559"/>
+      <entry name="yvu420" value="0x32315659"/>
+      <entry name="yuv422" value="0x36315559"/>
+      <entry name="yvu422" value="0x36315659"/>
+      <entry name="yuv444" value="0x34325559"/>
+      <entry name="yvu444" value="0x34325659"/>
+    </enum>
+
+    <!-- Create a wayland buffer for the prime fd.  Use for regular and planar
+         buffers.  Pass 0 for offset and stride for unused planes. -->
+    <request name="create_prime_buffer">
+      <arg name="id" type="new_id" interface="wl_buffer"/>
+      <arg name="name" type="fd"/>
+      <arg name="width" type="int"/>
+      <arg name="height" type="int"/>
+      <arg name="format" type="uint"/>
+      <arg name="stride" type="int"/>
+    </request>
+
+	<event name="format">
+      <arg name="format" type="uint"/>
+    </event>
+
+	<!-- Notification of the path of the drm device which is used by
+         the server.  The client should use this device for creating
+         local buffers.  Only buffers created from this device should
+         be be passed to the server using this drm object's
+         create_buffer request. -->
+	<event name="device">
+      <arg name="name" type="string"/>
+    </event>
+
+  </interface>
+
+</protocol>
diff --git a/src/Makefile.am b/src/Makefile.am
index 15f44a5..b3c414c 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -4,8 +4,11 @@  noinst_LTLIBRARIES = libwayland-util.la
 include_HEADERS =				\
 	wayland-util.h				\
 	wayland-server-protocol.h		\
+	wayland-dmabuf-server-protocol.h 	\
 	wayland-server.h			\
+	wayland-dmabuf.h 			\
 	wayland-client-protocol.h		\
+	wayland-dmabuf-client-protocol.h 	\
 	wayland-client.h			\
 	wayland-egl.h				\
 	wayland-version.h
@@ -22,14 +25,17 @@  libwayland_server_la_LIBADD = $(FFI_LIBS) libwayland-util.la -lrt -lm
 libwayland_server_la_LDFLAGS = -version-info 1:0:1
 libwayland_server_la_SOURCES =			\
 	wayland-protocol.c			\
+	wayland-dmabuf-protocol.c 	\
 	wayland-server.c			\
 	wayland-shm.c				\
+	wayland-dmabuf.c 			\
 	event-loop.c
 
 libwayland_client_la_LIBADD = $(FFI_LIBS) libwayland-util.la -lrt -lm
 libwayland_client_la_LDFLAGS = -version-info 2:0:2
 libwayland_client_la_SOURCES =			\
 	wayland-protocol.c			\
+	wayland-dmabuf-protocol.c 	\
 	wayland-client.c
 
 pkgconfigdir = $(libdir)/pkgconfig
@@ -65,7 +71,11 @@  endif
 BUILT_SOURCES =					\
 	wayland-server-protocol.h		\
 	wayland-client-protocol.h		\
-	wayland-protocol.c
+	wayland-protocol.c 				\
+	wayland-dmabuf-server-protocol.h		\
+	wayland-dmabuf-client-protocol.h		\
+	wayland-dmabuf-protocol.c
+
 
 CLEANFILES = $(BUILT_SOURCES)
 DISTCLEANFILES = wayland-version.h
diff --git a/src/wayland-dmabuf.c b/src/wayland-dmabuf.c
new file mode 100644
index 0000000..ce6dc4c
--- /dev/null
+++ b/src/wayland-dmabuf.c
@@ -0,0 +1,231 @@ 
+/*
+ * Copyright © 2011 Kristian Høgsberg
+ * Copyright © 2011 Benjamin Franzke
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Kristian Høgsberg <krh@bitplanet.net>
+ *    Benjamin Franzke <benjaminfranzke@googlemail.com>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <sys/mman.h>
+
+#include "wayland-server.h"
+#include "wayland-dmabuf.h"
+#include "wayland-dmabuf-server-protocol.h"
+
+struct wl_dmabuf {
+	struct wl_global *wl_dmabuf_global;
+	void *user_data;
+	struct wl_dmabuf_callbacks *callbacks;
+};
+
+static void
+destroy_buffer(struct wl_resource *resource)
+{
+	struct wl_dmabuf_buffer *buffer = wl_resource_get_user_data(resource);
+
+	buffer->refcount--;
+
+	if (buffer->refcount)
+		return;
+
+	close(buffer->fd);
+	free(buffer);
+}
+
+static void
+buffer_destroy(struct wl_client *client, struct wl_resource *resource)
+{
+	wl_resource_destroy(resource);
+}
+
+static const struct wl_buffer_interface dmabuf_buffer_interface = {
+	buffer_destroy
+};
+
+static void
+dmabuf_create_prime_buffer(struct wl_client *client, struct wl_resource *resource,
+              uint32_t id,  int fd,
+              int32_t width, int32_t height,
+              uint32_t format, int32_t stride)
+{
+	struct wl_dmabuf *dmabuf = wl_resource_get_user_data(resource);
+	struct wl_dmabuf_buffer *buffer;
+
+	buffer = calloc(1, sizeof *buffer);
+	if (buffer == NULL) {
+		wl_resource_post_no_memory(resource);
+		return;
+	}
+
+	buffer->resource =
+		wl_resource_create(client, &wl_buffer_interface, 1, id);
+	if (!buffer->resource) {
+		wl_resource_post_no_memory(resource);
+		free(buffer);
+		return;
+	}
+
+	buffer->dmabuf = dmabuf;
+	buffer->width = width;
+	buffer->height = height;
+	buffer->format = format;
+	buffer->data = NULL;
+	buffer->mmapcount = 0;
+	buffer->refcount = 1;
+	/* make sure we have your own file descriptor */
+	buffer->fd = dup(fd);
+	close(fd);
+	buffer->stride = stride;
+
+	wl_resource_set_implementation(buffer->resource,
+				       &dmabuf_buffer_interface,
+				       buffer, destroy_buffer);
+}
+
+static const struct wl_dmabuf_interface dmabuf_interface = {
+    dmabuf_create_prime_buffer
+};
+
+static void
+bind_dmabuf(struct wl_client *client, void *data, uint32_t version, uint32_t id)
+{
+	struct wl_dmabuf *dmabuf = data;
+	struct wl_resource *resource;
+
+	resource = wl_resource_create(client, &wl_dmabuf_interface, 1, id);
+	if (!resource) {
+		wl_client_post_no_memory(client);
+		return;
+	}
+
+	wl_resource_set_implementation(resource, &dmabuf_interface, data, NULL);
+
+	if (dmabuf->callbacks->send_server_info)
+		dmabuf->callbacks->send_server_info(dmabuf->user_data, resource);
+}
+
+WL_EXPORT struct wl_dmabuf *
+wl_dmabuf_init(struct wl_display *display, struct wl_dmabuf_callbacks *callbacks,
+		void *user_data, uint32_t flags)
+{
+	struct wl_dmabuf *dmabuf;
+
+	dmabuf = malloc(sizeof *dmabuf);
+
+	dmabuf->callbacks = callbacks;
+	dmabuf->user_data = user_data;
+
+	dmabuf->wl_dmabuf_global =
+		wl_global_create(display, &wl_dmabuf_interface, 1, dmabuf, bind_dmabuf);
+
+	return dmabuf;
+}
+
+WL_EXPORT void
+wl_dmabuf_uninit(struct wl_dmabuf *dmabuf)
+{
+	wl_global_destroy(dmabuf->wl_dmabuf_global);
+
+	free(dmabuf);
+}
+
+WL_EXPORT struct wl_dmabuf_buffer *
+wl_dmabuf_buffer_get(struct wl_resource *resource)
+{
+	if (resource == NULL)
+		return NULL;
+
+	if (wl_resource_instance_of(resource, &wl_buffer_interface,
+				&dmabuf_buffer_interface))
+		return wl_resource_get_user_data(resource);
+
+	return NULL;
+}
+
+WL_EXPORT uint32_t
+wl_dmabuf_buffer_get_format(struct wl_dmabuf_buffer *buffer)
+{
+	return buffer->format;
+}
+
+WL_EXPORT int32_t
+wl_dmabuf_buffer_get_stride(struct wl_dmabuf_buffer *buffer)
+{
+	return buffer->stride;
+}
+
+WL_EXPORT void *
+wl_dmabuf_buffer_get_data(struct wl_dmabuf_buffer *buffer)
+{
+	uint32_t size;
+
+	buffer->refcount++;
+
+	if (buffer->mmapcount++)
+		return buffer->data;
+
+	size = buffer->width * buffer->height * 4;
+	buffer->data = mmap (0, size, PROT_READ | PROT_WRITE, MAP_SHARED, buffer->fd, 0);
+
+	return buffer->data;
+}
+
+WL_EXPORT void
+wl_dmabuf_buffer_put_data(struct wl_dmabuf_buffer *buffer)
+{
+	uint32_t size;
+
+	buffer->mmapcount--;
+	buffer->refcount--;
+
+	if (buffer->mmapcount)
+		return;
+
+	size = buffer->width * buffer->height * 4;
+	munmap (buffer->data, size);
+	buffer->data = NULL;
+
+	if (buffer->refcount)
+		return;
+
+	close(buffer->fd);
+	free(buffer);
+}
+
+WL_EXPORT int32_t
+wl_dmabuf_buffer_get_width(struct wl_dmabuf_buffer *buffer)
+{
+	return buffer->width;
+}
+
+WL_EXPORT int32_t
+wl_dmabuf_buffer_get_height(struct wl_dmabuf_buffer *buffer)
+{
+	return buffer->height;
+}
diff --git a/src/wayland-dmabuf.h b/src/wayland-dmabuf.h
new file mode 100644
index 0000000..f9eb230
--- /dev/null
+++ b/src/wayland-dmabuf.h
@@ -0,0 +1,123 @@ 
+#ifndef WAYLAND_DMABUF_H
+#define WAYLAND_DMABUF_H
+
+#include <wayland-server.h>
+
+#ifndef WL_DMABUF_FORMAT_ENUM
+#define WL_DMABUF_FORMAT_ENUM
+
+enum wl_dmabuf_format {
+	WL_DMABUF_FORMAT_C8 = 0x20203843,
+	WL_DMABUF_FORMAT_RGB332 = 0x38424752,
+	WL_DMABUF_FORMAT_BGR233 = 0x38524742,
+	WL_DMABUF_FORMAT_XRGB4444 = 0x32315258,
+	WL_DMABUF_FORMAT_XBGR4444 = 0x32314258,
+	WL_DMABUF_FORMAT_RGBX4444 = 0x32315852,
+	WL_DMABUF_FORMAT_BGRX4444 = 0x32315842,
+	WL_DMABUF_FORMAT_ARGB4444 = 0x32315241,
+	WL_DMABUF_FORMAT_ABGR4444 = 0x32314241,
+	WL_DMABUF_FORMAT_RGBA4444 = 0x32314152,
+	WL_DMABUF_FORMAT_BGRA4444 = 0x32314142,
+	WL_DMABUF_FORMAT_XRGB1555 = 0x35315258,
+	WL_DMABUF_FORMAT_XBGR1555 = 0x35314258,
+	WL_DMABUF_FORMAT_RGBX5551 = 0x35315852,
+	WL_DMABUF_FORMAT_BGRX5551 = 0x35315842,
+	WL_DMABUF_FORMAT_ARGB1555 = 0x35315241,
+	WL_DMABUF_FORMAT_ABGR1555 = 0x35314241,
+	WL_DMABUF_FORMAT_RGBA5551 = 0x35314152,
+	WL_DMABUF_FORMAT_BGRA5551 = 0x35314142,
+	WL_DMABUF_FORMAT_RGB565 = 0x36314752,
+	WL_DMABUF_FORMAT_BGR565 = 0x36314742,
+	WL_DMABUF_FORMAT_RGB888 = 0x34324752,
+	WL_DMABUF_FORMAT_BGR888 = 0x34324742,
+	WL_DMABUF_FORMAT_XRGB8888 = 0x34325258,
+	WL_DMABUF_FORMAT_XBGR8888 = 0x34324258,
+	WL_DMABUF_FORMAT_RGBX8888 = 0x34325852,
+	WL_DMABUF_FORMAT_BGRX8888 = 0x34325842,
+	WL_DMABUF_FORMAT_ARGB8888 = 0x34325241,
+	WL_DMABUF_FORMAT_ABGR8888 = 0x34324241,
+	WL_DMABUF_FORMAT_RGBA8888 = 0x34324152,
+	WL_DMABUF_FORMAT_BGRA8888 = 0x34324142,
+	WL_DMABUF_FORMAT_XRGB2101010 = 0x30335258,
+	WL_DMABUF_FORMAT_XBGR2101010 = 0x30334258,
+	WL_DMABUF_FORMAT_RGBX1010102 = 0x30335852,
+	WL_DMABUF_FORMAT_BGRX1010102 = 0x30335842,
+	WL_DMABUF_FORMAT_ARGB2101010 = 0x30335241,
+	WL_DMABUF_FORMAT_ABGR2101010 = 0x30334241,
+	WL_DMABUF_FORMAT_RGBA1010102 = 0x30334152,
+	WL_DMABUF_FORMAT_BGRA1010102 = 0x30334142,
+	WL_DMABUF_FORMAT_YUYV = 0x56595559,
+	WL_DMABUF_FORMAT_YVYU = 0x55595659,
+	WL_DMABUF_FORMAT_UYVY = 0x59565955,
+	WL_DMABUF_FORMAT_VYUY = 0x59555956,
+	WL_DMABUF_FORMAT_AYUV = 0x56555941,
+	WL_DMABUF_FORMAT_NV12 = 0x3231564e,
+	WL_DMABUF_FORMAT_NV21 = 0x3132564e,
+	WL_DMABUF_FORMAT_NV16 = 0x3631564e,
+	WL_DMABUF_FORMAT_NV61 = 0x3136564e,
+	WL_DMABUF_FORMAT_YUV410 = 0x39565559,
+	WL_DMABUF_FORMAT_YVU410 = 0x39555659,
+	WL_DMABUF_FORMAT_YUV411 = 0x31315559,
+	WL_DMABUF_FORMAT_YVU411 = 0x31315659,
+	WL_DMABUF_FORMAT_YUV420 = 0x32315559,
+	WL_DMABUF_FORMAT_YVU420 = 0x32315659,
+	WL_DMABUF_FORMAT_YUV422 = 0x36315559,
+	WL_DMABUF_FORMAT_YVU422 = 0x36315659,
+	WL_DMABUF_FORMAT_YUV444 = 0x34325559,
+	WL_DMABUF_FORMAT_YVU444 = 0x34325659,
+};
+#endif /* WL_DMABUF_FORMAT_ENUM */
+
+struct wl_dmabuf;
+
+struct wl_dmabuf_buffer {
+	struct wl_resource *resource;
+	struct wl_dmabuf *dmabuf;
+	int32_t width, height;
+	int32_t stride;
+	uint32_t format;
+	uint8_t *data;
+	int mmapcount;
+	int refcount;
+	int fd;
+};
+
+/* struct wl_dmabuf_callbacks
+ *
+ * @send_server_info: ask to the server to send all
+ * supported pixel formats and device name
+ */
+struct wl_dmabuf_callbacks {
+	void (*send_server_info)(void *user_data, struct wl_resource *resource);
+};
+
+struct wl_dmabuf *
+wl_dmabuf_init(struct wl_display *display,
+		struct wl_dmabuf_callbacks *callbacks,
+		void *user_data, uint32_t flags);
+
+void
+wl_dmabuf_uninit(struct wl_dmabuf *dmabuf);
+
+struct wl_dmabuf_buffer *
+wl_dmabuf_buffer_get(struct wl_resource *resource);
+
+uint32_t
+wl_dmabuf_buffer_get_format(struct wl_dmabuf_buffer *buffer);
+
+int32_t
+wl_dmabuf_buffer_get_stride(struct wl_dmabuf_buffer *buffer);
+
+void *
+wl_dmabuf_buffer_get_data(struct wl_dmabuf_buffer *buffer);
+
+void
+wl_dmabuf_buffer_put_data(struct wl_dmabuf_buffer *buffer);
+
+int32_t
+wl_dmabuf_buffer_get_width(struct wl_dmabuf_buffer *buffer);
+
+int32_t
+wl_dmabuf_buffer_get_height(struct wl_dmabuf_buffer *buffer);
+
+#endif