Re: [Linaro-mm-sig] [PATCH v4 1/3] Add wl_dmabuf protocol

On Tue, Jan 07, 2014 at 06:41:42PM +0100, benjamin.gaignard@linaro.org wrote:

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

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"/>
  

At least in upstream linux there's no generic "allocate me a dma-buf" interface. Even less so one that'll work across different subsystems.

Even with that peculiarity ignored (we could have a central dma-buf allocator akin to ION) there's the issue that you need to know up front which devices will all be interested in a given buffer, at least if you care about efficiency. ION uncoditionally requires this, dma-buf per se would allow post-allocation buffer movement (but it's not really implement atm anyway).

So I don't think this will work out as-is.

• </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;

Fyi latest dmabuf code in the kernel has a working lseek implementation to tell you the size of a buffer. Fairly useful given that you seem to hardcode a bunch of assumptions here. -Daniel

• 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

1.7.9.5

---

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