From: Benjamin Gaignard <benjamin.gaign...@linaro.org>
It is a simple example of how use wl_dmabuf protocol with weston
Signed-off-by: Benjamin Gaignard <benjamin.gaign...@linaro.org>
---
clients/Makefile.am | 11 ++
clients/simple-dmabuf.c | 469 +++++++++++++++++++++++++++++++++++++++++++++++
configure.ac | 5 +
3 files changed, 485 insertions(+)
create mode 100644 clients/simple-dmabuf.c
diff --git a/clients/Makefile.am b/clients/Makefile.am
index 032d900..3840079 100644
--- a/clients/Makefile.am
+++ b/clients/Makefile.am
@@ -52,6 +52,17 @@ weston_multi_resource_SOURCES = multi-resource.c \
../shared/os-compatibility.h
weston_multi_resource_CPPFLAGS = $(SIMPLE_CLIENT_CFLAGS)
weston_multi_resource_LDADD = $(SIMPLE_CLIENT_LIBS) -lm
+
+if BUILD_SIMPLE_CLIENT_DMABUF
+simple_clients_programs += \
+ weston-simple-dmabuf
+
+weston_simple_dmabuf_SOURCES = simple-dmabuf.c \
+ ../shared/os-compatibility.c \
+ ../shared/os-compatibility.h
+weston_simple_dmabuf_CPPFLAGS = $(SIMPLE_CLIENT_CFLAGS)
$(SIMPLE_CLIENT_DMABUF_CFLAGS)
+weston_simple_dmabuf_LDADD = $(SIMPLE_CLIENT_LIBS) $(SIMPLE_CLIENT_DMABUF_LIBS)
+endif
endif
if BUILD_SIMPLE_EGL_CLIENTS
diff --git a/clients/simple-dmabuf.c b/clients/simple-dmabuf.c
new file mode 100644
index 0000000..7f381ae
--- /dev/null
+++ b/clients/simple-dmabuf.c
@@ -0,0 +1,469 @@
+/*
+ * Copyright 2014 Benjamin Gaignard for Linaro
+ * Copyright © 2011 Benjamin Franzke
+ * Copyright © 2010 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
+ * 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.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdbool.h>
+#include <assert.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <signal.h>
+
+#include <wayland-client.h>
+#include <wayland-dmabuf-client-protocol.h>
+#include <xf86drm.h>
+
+#include "../shared/os-compatibility.h"
+
+struct display {
+ struct wl_display *display;
+ struct wl_registry *registry;
+ struct wl_compositor *compositor;
+ struct wl_shell *shell;
+ struct wl_dmabuf *dmabuf;
+ uint32_t format;
+ int drm_fd;
+};
+
+struct buffer {
+ struct wl_buffer *buffer;
+ int fd;
+ int busy;
+ uint32_t size;
+ struct display *display;
+ void *dmabuf_data;
+};
+
+struct window {
+ struct display *display;
+ int width, height;
+ struct wl_surface *surface;
+ struct wl_shell_surface *shell_surface;
+ struct buffer buffers[2];
+ struct buffer *prev_buffer;
+ struct wl_callback *callback;
+};
+
+static void
+buffer_release(void *data, struct wl_buffer *buffer)
+{
+ struct buffer *mybuf = data;
+
+ mybuf->busy = 0;
+}
+
+static const struct wl_buffer_listener buffer_listener = {
+ buffer_release
+};
+
+static int
+create_dmabuf_buffer(struct display *display, struct buffer *buffer,
+ int width, int height, uint32_t format)
+{
+ struct drm_mode_create_dumb create_arg;
+ int ret;
+ int prime_fd;
+ uint32_t stride;
+
+ memset (&create_arg, 0, sizeof (create_arg));
+ create_arg.bpp = 32;
+ create_arg.width = width;
+ create_arg.height = height;
+
+ ret = drmIoctl (display->drm_fd, DRM_IOCTL_MODE_CREATE_DUMB,
&create_arg);
+ if (ret)
+ return ret;
+
+ stride = create_arg.pitch;
+
+ ret = drmPrimeHandleToFD (display->drm_fd, create_arg.handle,
DRM_CLOEXEC, &prime_fd);
+ if (ret)
+ return ret;
+
+ buffer->buffer = wl_dmabuf_create_prime_buffer (display->dmabuf,
prime_fd,
+ width, height, format, stride);
+
+ wl_buffer_add_listener(buffer->buffer, &buffer_listener, buffer);
+
+ buffer->fd = prime_fd;
+ buffer->display = display;
+
+ buffer->size = width * height * 4;
+
+ buffer->dmabuf_data = mmap (0, buffer->size, PROT_READ | PROT_WRITE,
MAP_SHARED, buffer->fd, 0);
+
+ return 0;
+}
+
+static void
+destroy_dmabuf_buffer(struct buffer *buffer)
+{
+ struct display *display = buffer->display;
+ struct drm_mode_destroy_dumb destroy_arg;
+
+ munmap (buffer->dmabuf_data, buffer->size);
+
+ memset (&destroy_arg, 0, sizeof destroy_arg);
+ drmPrimeFDToHandle (display->drm_fd, buffer->fd, &destroy_arg.handle);
+ drmIoctl (display->drm_fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_arg);
+ close (buffer->fd);
+}
+
+static void
+handle_ping(void *data, struct wl_shell_surface *shell_surface,
+ uint32_t serial)
+{
+ wl_shell_surface_pong(shell_surface, serial);
+}
+
+static void
+handle_configure(void *data, struct wl_shell_surface *shell_surface,
+ uint32_t edges, int32_t width, int32_t height)
+{
+}
+
+static void
+handle_popup_done(void *data, struct wl_shell_surface *shell_surface)
+{
+}
+
+static const struct wl_shell_surface_listener shell_surface_listener = {
+ handle_ping,
+ handle_configure,
+ handle_popup_done
+};
+
+static struct window *
+create_window(struct display *display, int width, int height)
+{
+ struct window *window;
+
+ window = calloc(1, sizeof *window);
+ if (!window)
+ return NULL;
+
+ window->callback = NULL;
+ window->display = display;
+ window->width = width;
+ window->height = height;
+ window->surface = wl_compositor_create_surface(display->compositor);
+ window->shell_surface = wl_shell_get_shell_surface(display->shell,
+ window->surface);
+
+ if (window->shell_surface)
+ wl_shell_surface_add_listener(window->shell_surface,
+ &shell_surface_listener, window);
+
+ wl_shell_surface_set_title(window->shell_surface, "simple-dmabuf");
+
+ wl_shell_surface_set_toplevel(window->shell_surface);
+
+ return window;
+}
+
+static void
+destroy_window(struct window *window)
+{
+ if (window->callback)
+ wl_callback_destroy(window->callback);
+
+ if (window->buffers[0].buffer)
+ wl_buffer_destroy(window->buffers[0].buffer);
+ if (window->buffers[1].buffer)
+ wl_buffer_destroy(window->buffers[1].buffer);
+
+ destroy_dmabuf_buffer(&window->buffers[0]);
+ destroy_dmabuf_buffer(&window->buffers[1]);
+
+ wl_shell_surface_destroy(window->shell_surface);
+ wl_surface_destroy(window->surface);
+ free(window);
+}
+
+static struct buffer *
+window_next_buffer(struct window *window)
+{
+ struct buffer *buffer;
+ int ret = 0;
+
+ if (!window->buffers[0].busy)
+ buffer = &window->buffers[0];
+ else if (!window->buffers[1].busy)
+ buffer = &window->buffers[1];
+ else
+ return NULL;
+
+ if (!buffer->buffer) {
+ ret = create_dmabuf_buffer(window->display, buffer,
+ window->width, window->height,
+ WL_DMABUF_FORMAT_XRGB8888);
+
+ if (ret)
+ return NULL;
+
+ /* paint the padding */
+ memset(buffer->dmabuf_data, 0xff, window->width *
window->height * 4);
+ }
+
+ return buffer;
+}
+
+static void
+paint_pixels(void *image, int padding, int width, int height, uint32_t time)
+{
+ const int halfh = padding + (height - padding * 2) / 2;
+ const int halfw = padding + (width - padding * 2) / 2;
+ int ir, or;
+ uint32_t *pixel = image;
+ int y;
+
+ /* squared radii thresholds */
+ or = (halfw < halfh ? halfw : halfh) - 8;
+ ir = or - 32;
+ or *= or;
+ ir *= ir;
+
+ pixel += padding * width;
+ for (y = padding; y < height - padding; y++) {
+ int x;
+ int y2 = (y - halfh) * (y - halfh);
+
+ pixel += padding;
+ for (x = padding; x < width - padding; x++) {
+ uint32_t v;
+
+ /* squared distance from center */
+ int r2 = (x - halfw) * (x - halfw) + y2;
+
+ if (r2 < ir)
+ v = (r2 / 32 + time / 64) * 0x0080401;
+ else if (r2 < or)
+ v = (y + time / 32) * 0x0080401;
+ else
+ v = (x + time / 16) * 0x0080401;
+ v &= 0x00ffffff;
+
+ /* cross if compositor uses X from XRGB as alpha */
+ if (abs(x - y) > 6 && abs(x + y - height) > 6)
+ v |= 0xff000000;
+
+ *pixel++ = v;
+ }
+
+ pixel += padding;
+ }
+}
+
+static const struct wl_callback_listener frame_listener;
+
+static void
+redraw(void *data, struct wl_callback *callback, uint32_t time)
+{
+ struct window *window = data;
+ struct buffer *buffer;
+
+ buffer = window_next_buffer(window);
+ if (!buffer) {
+ fprintf(stderr,
+ !callback ? "Failed to create the first buffer.\n" :
+ "Both buffers busy at redraw(). Server bug?\n");
+ abort();
+ }
+
+ paint_pixels(buffer->dmabuf_data, 20, window->width, window->height,
time);
+
+ wl_surface_attach(window->surface, buffer->buffer, 0, 0);
+ wl_surface_damage(window->surface,
+ 20, 20, window->width - 40, window->height - 40);
+
+ if (callback)
+ wl_callback_destroy(callback);
+
+ window->callback = wl_surface_frame(window->surface);
+ wl_callback_add_listener(window->callback, &frame_listener, window);
+ wl_surface_commit(window->surface);
+ buffer->busy = 1;
+}
+
+static const struct wl_callback_listener frame_listener = {
+ redraw
+};
+
+static void
+dmabuf_handle_format(void *data, struct wl_dmabuf *wl_dmabuf, uint32_t format)
+{
+ struct display *d = data;
+
+ fprintf(stderr, "server supported format %.4s\n", (char *) &format);
+
+ if (format == WL_DMABUF_FORMAT_XRGB8888)
+ d->format = format;
+}
+
+static void
+dmabuf_handle_device (void *data, struct wl_dmabuf *wl_dmabuf, char *name)
+{
+ struct display *d = data;
+
+ fprintf(stderr, "server %s\n", name);
+ d->drm_fd = open (name, O_RDWR, 0);
+}
+
+struct wl_dmabuf_listener dmabuf_listener = {
+ dmabuf_handle_format,
+ dmabuf_handle_device
+};
+
+static void
+registry_handle_global(void *data, struct wl_registry *registry,
+ uint32_t id, const char *interface, uint32_t version)
+{
+ struct display *d = data;
+
+ if (strcmp(interface, "wl_compositor") == 0) {
+ d->compositor =
+ wl_registry_bind(registry,
+ id, &wl_compositor_interface, 1);
+ } else if (strcmp(interface, "wl_shell") == 0) {
+ d->shell = wl_registry_bind(registry,
+ id, &wl_shell_interface, 1);
+ } else if (strcmp(interface, "wl_dmabuf") == 0) {
+ d->dmabuf = wl_registry_bind(registry,
+ id, &wl_dmabuf_interface, 1);
+ wl_dmabuf_add_listener(d->dmabuf, &dmabuf_listener, d);
+ }
+}
+
+static void
+registry_handle_global_remove(void *data, struct wl_registry *registry,
+ uint32_t name)
+{
+}
+
+static const struct wl_registry_listener registry_listener = {
+ registry_handle_global,
+ registry_handle_global_remove
+};
+
+static struct display *
+create_display(void)
+{
+ struct display *display;
+
+ display = malloc(sizeof *display);
+ if (display == NULL) {
+ fprintf(stderr, "out of memory\n");
+ exit(1);
+ }
+ display->display = wl_display_connect(NULL);
+ assert(display->display);
+
+ display->format = 0;
+ display->drm_fd = -1;
+ display->registry = wl_display_get_registry(display->display);
+ wl_registry_add_listener(display->registry,
+ ®istry_listener, display);
+ wl_display_roundtrip(display->display);
+ if (display->dmabuf == NULL) {
+ fprintf(stderr, "No wl_dmabuf global\n");
+ exit(1);
+ }
+
+ wl_display_roundtrip(display->display);
+
+ if (display->format != WL_DMABUF_FORMAT_XRGB8888) {
+ fprintf(stderr, "WL_DMABUF_FORMAT_XRGB8888 not available\n");
+ exit(1);
+ }
+
+ wl_display_get_fd(display->display);
+
+ return display;
+}
+
+static void
+destroy_display(struct display *display)
+{
+ if (display->dmabuf)
+ wl_dmabuf_destroy(display->dmabuf);
+
+ if (display->shell)
+ wl_shell_destroy(display->shell);
+
+ if (display->compositor)
+ wl_compositor_destroy(display->compositor);
+
+ wl_registry_destroy(display->registry);
+ wl_display_flush(display->display);
+ wl_display_disconnect(display->display);
+ close(display->drm_fd);
+ free(display);
+}
+
+static int running = 1;
+
+static void
+signal_int(int signum)
+{
+ running = 0;
+}
+
+int
+main(int argc, char **argv)
+{
+ struct sigaction sigint;
+ struct display *display;
+ struct window *window;
+ int ret = 0;
+
+ display = create_display();
+ window = create_window(display, 250, 250);
+ if (!window)
+ return 1;
+
+ sigint.sa_handler = signal_int;
+ sigemptyset(&sigint.sa_mask);
+ sigint.sa_flags = SA_RESETHAND;
+ sigaction(SIGINT, &sigint, NULL);
+
+ /* Initialise damage to full surface, so the padding gets painted */
+ wl_surface_damage(window->surface, 0, 0,
+ window->width, window->height);
+
+ redraw(window, NULL, 0);
+
+ while (running && ret != -1)
+ ret = wl_display_dispatch(display->display);
+
+ fprintf(stderr, "simple-dmabuf exiting\n");
+ destroy_window(window);
+ destroy_display(display);
+
+ return 0;
+}
diff --git a/configure.ac b/configure.ac
index 50bce23..da445f3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -271,6 +271,11 @@ AC_ARG_ENABLE(simple-clients,
AM_CONDITIONAL(BUILD_SIMPLE_CLIENTS, test "x$enable_simple_clients" = "xyes")
if test x$enable_simple_clients = xyes; then
PKG_CHECK_MODULES(SIMPLE_CLIENT, [wayland-client])
+ AC_CHECK_HEADER([wayland-dmabuf.h],
+ [ PKG_CHECK_MODULES(SIMPLE_CLIENT_DMABUF, [libdrm libkms] ,
+ [have_dmabuf=yes],
[have_dmabuf=no])],
+ [have_dmabuf=no])
+ AM_CONDITIONAL(BUILD_SIMPLE_CLIENT_DMABUF, test "x$have_dmabuf" = "xyes")
fi
AC_ARG_ENABLE(simple-egl-clients,
--
1.7.9.5
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