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-rw-r--r--app/main.cpp874
1 files changed, 747 insertions, 127 deletions
diff --git a/app/main.cpp b/app/main.cpp
index b68aeac..fe2fce2 100644
--- a/app/main.cpp
+++ b/app/main.cpp
@@ -1,83 +1,534 @@
/*
- * Copyright (C) 2018 Konsulko Group
+ * Copyright © 2020 Collabora, Ltd.
*
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
+ * 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:
*
- * http://www.apache.org/licenses/LICENSE-2.0
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial
+ * portions of the Software.
*
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * 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.
*/
-#include <QGuiApplication>
-#include <QApplication>
-#include <QtCore/QDebug>
-#include <QtCore/QCommandLineParser>
-#include <QtCore/QUrlQuery>
-#include <QtGui/QGuiApplication>
-#include <QtQml/QQmlApplicationEngine>
-#include <QtQml/QQmlContext>
-#include <QtQml/qqml.h>
-#include <QQuickWindow>
-#include <QtQuickControls2/QQuickStyle>
-#include <QtGui/QGuiApplication>
-#include <qpa/qplatformnativeinterface.h>
-#include <QTimer>
#define GST_USE_UNSTABLE_API
-
-#include <QWidget>
+#define HAVE_MEMFD_CREATE
#include <string>
#include <iostream>
#include <cstring>
+#include <cstdio>
+#include <cstdlib>
+
+#include <signal.h>
+#include <wayland-client.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <assert.h>
+
+#include "xdg-shell-client-protocol.h"
+#include "agl-shell-desktop-client-protocol.h"
+#include "zalloc.h"
#include <gst/gst.h>
#include <gst/video/videooverlay.h>
#include <gst/wayland/wayland.h>
-#include "surface.hpp"
-
#define WINDOW_WIDTH_SIZE 640
#define WINDOW_HEIGHT_SIZE 720
#define WINDOW_WIDTH_POS_X 640
#define WINDOW_WIDTH_POS_Y 180
-struct cluster_window_data {
- int x; int y;
- int width; int height;
+
+// C++ requires a cast and we in wayland we do the cast implictly
+#define WL_ARRAY_FOR_EACH(pos, array, type) \
+ for (pos = (type)(array)->data; \
+ (const char *) pos < ((const char *) (array)->data + (array)->size); \
+ (pos)++)
+
+struct display {
+ struct wl_display *wl_display;
+ struct wl_registry *wl_registry;
+ struct wl_compositor *wl_compositor;
+ struct wl_output *wl_output;
+ struct wl_shm *shm;
+
+ struct {
+ int width;
+ int height;
+ } output_data;
+
+ struct xdg_wm_base *wm_base;
+ struct agl_shell_desktop *agl_shell_desktop;
+
+ int has_xrgb;
+};
+
+struct buffer {
+ struct wl_buffer *buffer;
+ void *shm_data;
+ int busy;
+};
+
+struct window {
+ struct display *display;
+
+ int x, y;
+ int width, height;
+
+ struct wl_surface *surface;
+
+ struct xdg_surface *xdg_surface;
+ struct xdg_toplevel *xdg_toplevel;
+ bool wait_for_configure;
+
+ int fullscreen, maximized;
+
+ struct buffer buffers[2];
+ struct wl_callback *callback;
};
+
struct cluster_receiver_data {
- QWidget *widget;
- QPlatformNativeInterface *native;
+ struct window *window;
GstElement *pipeline;
GstWaylandVideo *wl_video;
GstVideoOverlay *overlay;
+};
+
+static int running = 1;
+
+static void
+redraw(void *data, struct wl_callback *callback, uint32_t time);
+
+static void
+paint_pixels(void *image, int padding, int width, int height, uint32_t time)
+{
+ memset(image, 0x00, width * height * 4);
+}
+
+static void
+buffer_release(void *data, struct wl_buffer *buffer)
+{
+ struct buffer *mybuf = static_cast<struct buffer *>(data);
+ mybuf->busy = 0;
+}
+
+static const struct wl_buffer_listener buffer_listener = {
+ buffer_release
+};
+
+static int
+os_fd_set_cloexec(int fd)
+{
+ long flags;
+
+ if (fd == -1)
+ return -1;
+
+ flags = fcntl(fd, F_GETFD);
+ if (flags == -1)
+ return -1;
+
+ if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1)
+ return -1;
+
+ return 0;
+}
+
+static int
+set_cloexec_or_close(int fd)
+{
+ if (os_fd_set_cloexec(fd) != 0) {
+ close(fd);
+ return -1;
+ }
+ return fd;
+}
+
+static int
+create_tmpfile_cloexec(char *tmpname)
+{
+ int fd;
+
+#ifdef HAVE_MKOSTEMP
+ fd = mkostemp(tmpname, O_CLOEXEC);
+ if (fd >= 0)
+ unlink(tmpname);
+#else
+ fd = mkstemp(tmpname);
+ if (fd >= 0) {
+ fd = set_cloexec_or_close(fd);
+ unlink(tmpname);
+ }
+#endif
+
+ return fd;
+}
+
+/*
+ * Create a new, unique, anonymous file of the given size, and
+ * return the file descriptor for it. The file descriptor is set
+ * CLOEXEC. The file is immediately suitable for mmap()'ing
+ * the given size at offset zero.
+ *
+ * The file should not have a permanent backing store like a disk,
+ * but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
+ *
+ * The file name is deleted from the file system.
+ *
+ * The file is suitable for buffer sharing between processes by
+ * transmitting the file descriptor over Unix sockets using the
+ * SCM_RIGHTS methods.
+ *
+ * If the C library implements posix_fallocate(), it is used to
+ * guarantee that disk space is available for the file at the
+ * given size. If disk space is insufficient, errno is set to ENOSPC.
+ * If posix_fallocate() is not supported, program may receive
+ * SIGBUS on accessing mmap()'ed file contents instead.
+ *
+ * If the C library implements memfd_create(), it is used to create the
+ * file purely in memory, without any backing file name on the file
+ * system, and then sealing off the possibility of shrinking it. This
+ * can then be checked before accessing mmap()'ed file contents, to
+ * make sure SIGBUS can't happen. It also avoids requiring
+ * XDG_RUNTIME_DIR.
+ */
+static int
+os_create_anonymous_file(off_t size)
+{
+ static const char weston_template[] = "/weston-shared-XXXXXX";
+ const char *path;
+ char *name;
+ int fd;
+ int ret;
+
+#ifdef HAVE_MEMFD_CREATE
+ fd = memfd_create("weston-shared", MFD_CLOEXEC | MFD_ALLOW_SEALING);
+ if (fd >= 0) {
+ /* We can add this seal before calling posix_fallocate(), as
+ * the file is currently zero-sized anyway.
+ *
+ * There is also no need to check for the return value, we
+ * couldn't do anything with it anyway.
+ */
+ fcntl(fd, F_ADD_SEALS, F_SEAL_SHRINK);
+ } else
+#endif
+ {
+ path = getenv("XDG_RUNTIME_DIR");
+ if (!path) {
+ errno = ENOENT;
+ return -1;
+ }
+
+ name = static_cast<char *>(malloc(strlen(path) + sizeof(weston_template)));
+ if (!name)
+ return -1;
+
+ strcpy(name, path);
+ strcat(name, weston_template);
+
+ fd = create_tmpfile_cloexec(name);
+
+ free(name);
+
+ if (fd < 0)
+ return -1;
+ }
+
+#ifdef HAVE_POSIX_FALLOCATE
+ do {
+ ret = posix_fallocate(fd, 0, size);
+ } while (ret == EINTR);
+ if (ret != 0) {
+ close(fd);
+ errno = ret;
+ return -1;
+ }
+#else
+ do {
+ ret = ftruncate(fd, size);
+ } while (ret < 0 && errno == EINTR);
+ if (ret < 0) {
+ close(fd);
+ return -1;
+ }
+#endif
+
+ return fd;
+}
+
+static int
+create_shm_buffer(struct display *display, struct buffer *buffer,
+ int width, int height, uint32_t format)
+{
+ struct wl_shm_pool *pool;
+ int fd, size, stride;
+ void *data;
+
+ stride = width * 4;
+ size = stride * height;
+
+ fd = os_create_anonymous_file(size);
+ if (fd < 0) {
+ fprintf(stderr, "creating a buffer file for %d B failed: %s\n",
+ size, strerror(errno));
+ return -1;
+ }
+
+ data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+ if (data == MAP_FAILED) {
+ fprintf(stderr, "mmap failed: %s\n", strerror(errno));
+ close(fd);
+ return -1;
+ }
+
+ pool = wl_shm_create_pool(display->shm, fd, size);
+ buffer->buffer = wl_shm_pool_create_buffer(pool, 0, width,
+ height, stride, format);
+ wl_buffer_add_listener(buffer->buffer, &buffer_listener, buffer);
+ wl_shm_pool_destroy(pool);
+ close(fd);
+
+ buffer->shm_data = data;
+ return 0;
+}
+
+static struct buffer *
+get_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) {
+ fprintf(stdout, "get_next_buffer() buffer is not set, setting with "
+ "width %d, height %d\n", window->width, window->height);
+ ret = create_shm_buffer(window->display, buffer, window->width,
+ window->height, WL_SHM_FORMAT_XRGB8888);
+
+ if (ret < 0)
+ return NULL;
+
+ /* paint the padding */
+ memset(buffer->shm_data, 0x00, window->width * window->height * 4);
+ }
+
+ return buffer;
+}
+
+
+static const struct wl_callback_listener frame_listener = {
+ redraw
+};
+
+static void
+redraw(void *data, struct wl_callback *callback, uint32_t time)
+{
+ struct window *window = static_cast<struct window *>(data);
+ struct buffer *buffer;
+
+ buffer = get_next_buffer(window);
+ if (!buffer) {
+ fprintf(stderr,
+ !callback ? "Failed to create the first buffer.\n" :
+ "Both buffers busy at redraw(). Server bug?\n");
+ abort();
+ }
+
+ // do the actual painting
+ paint_pixels(buffer->shm_data, 0x0, window->width, window->height, time);
+
+ wl_surface_attach(window->surface, buffer->buffer, 0, 0);
+ wl_surface_damage(window->surface, 0, 0, window->width, window->height);
+
+ 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 void
+shm_format(void *data, struct wl_shm *wl_shm, uint32_t format)
+{
+ struct display *d = static_cast<struct display *>(data);
+
+ if (format == WL_SHM_FORMAT_XRGB8888)
+ d->has_xrgb = true;
+}
+
+static const struct wl_shm_listener shm_listener = {
+ shm_format
+};
+
+static void
+xdg_wm_base_ping(void *data, struct xdg_wm_base *shell, uint32_t serial)
+{
+ xdg_wm_base_pong(shell, serial);
+}
+
+static const struct xdg_wm_base_listener xdg_wm_base_listener = {
+ xdg_wm_base_ping,
+};
+
+static void
+display_handle_geometry(void *data, struct wl_output *wl_output,
+ int x, int y, int physical_width, int physical_height,
+ int subpixel, const char *make, const char *model, int transform)
+{
+ (void) data;
+ (void) wl_output;
+ (void) x;
+ (void) y;
+ (void) physical_width;
+ (void) physical_height;
+ (void) subpixel;
+ (void) make;
+ (void) model;
+ (void) transform;
+}
+
+static void
+display_handle_mode(void *data, struct wl_output *wl_output, uint32_t flags,
+ int width, int height, int refresh)
+{
+ struct display *d = static_cast<struct display *>(data);
+
+ if (wl_output == d->wl_output && (flags & WL_OUTPUT_MODE_CURRENT)) {
+ d->output_data.width = width;
+ d->output_data.height = height;
+
+ fprintf(stdout, "Found output with width %d and height %d\n",
+ d->output_data.width, d->output_data.height);
+ }
+}
- bool widget_has_buffer_mapped;
- struct cluster_window_data window_data;
+static void
+display_handle_scale(void *data, struct wl_output *wl_output, int scale)
+{
+ (void) data;
+ (void) wl_output;
+ (void) scale;
+}
+
+static void
+display_handle_done(void *data, struct wl_output *wl_output)
+{
+ (void) data;
+ (void) wl_output;
+}
+
+static const struct wl_output_listener output_listener = {
+ display_handle_geometry,
+ display_handle_mode,
+ display_handle_done,
+ display_handle_scale
+};
+
+static void
+application_id(void *data, struct agl_shell_desktop *agl_shell_desktop,
+ const char *app_id)
+{
+ (void) data;
+ (void) agl_shell_desktop;
+ (void) app_id;
+}
+
+static void
+application_id_state(void *data, struct agl_shell_desktop *agl_shell_desktop,
+ const char *app_id, const char *app_data,
+ uint32_t app_state, uint32_t app_role)
+{
+ (void) data;
+ (void) app_data;
+ (void) agl_shell_desktop;
+ (void) app_id;
+ (void) app_state;
+ (void) app_role;
+}
+
+static const struct agl_shell_desktop_listener agl_shell_desktop_listener = {
+ application_id,
+ application_id_state,
};
-static struct wl_surface *
-getWlSurface(QPlatformNativeInterface *native, QWindow *window)
+static void
+registry_handle_global(void *data, struct wl_registry *registry, uint32_t id,
+ const char *interface, uint32_t version)
{
- void *surf = native->nativeResourceForWindow("surface", window);
- return static_cast<struct ::wl_surface *>(surf);
+ struct display *d = static_cast<struct display *>(data);
+
+ if (strcmp(interface, "wl_compositor") == 0) {
+ d->wl_compositor =
+ static_cast<struct wl_compositor *>(wl_registry_bind(registry, id,
+ &wl_compositor_interface, 1));
+ } else if (strcmp(interface, "xdg_wm_base") == 0) {
+ d->wm_base = static_cast<struct xdg_wm_base *>(wl_registry_bind(registry,
+ id, &xdg_wm_base_interface, 1));
+ xdg_wm_base_add_listener(d->wm_base, &xdg_wm_base_listener, d);
+ } else if (strcmp(interface, "wl_shm") == 0) {
+ d->shm = static_cast<struct wl_shm *>(wl_registry_bind(registry,
+ id, &wl_shm_interface, 1));
+ wl_shm_add_listener(d->shm, &shm_listener, d);
+ } else if (strcmp(interface, "agl_shell_desktop") == 0) {
+ d->agl_shell_desktop = static_cast<struct agl_shell_desktop *>(wl_registry_bind(registry, id,
+ &agl_shell_desktop_interface, 1));
+ /* as an example, show how to register for events from the compositor */
+ agl_shell_desktop_add_listener(d->agl_shell_desktop,
+ &agl_shell_desktop_listener, d);
+ } else if (strcmp(interface, "wl_output") == 0) {
+ d->wl_output = static_cast<struct wl_output *>(wl_registry_bind(registry, id,
+ &wl_output_interface, 1));
+ wl_output_add_listener(d->wl_output, &output_listener, d);
+ }
}
+static void
+registry_handle_global_remove(void *data, struct wl_registry *reg, uint32_t id)
+{
+ (void) data;
+ (void) reg;
+ (void) id;
+}
+
+static const struct wl_registry_listener registry_listener = {
+ registry_handle_global,
+ registry_handle_global_remove,
+};
+
static void
error_cb(GstBus *bus, GstMessage *msg, gpointer user_data)
{
- struct cluster_receiver_data *d = static_cast<struct cluster_receiver_data *>(user_data);
+ struct cluster_receiver_data *d =
+ static_cast<struct cluster_receiver_data *>(user_data);
gchar *debug = NULL;
GError *err = NULL;
@@ -98,31 +549,20 @@ error_cb(GstBus *bus, GstMessage *msg, gpointer user_data)
static GstBusSyncReply
bus_sync_handler(GstBus *bus, GstMessage *message, gpointer user_data)
{
- struct cluster_receiver_data *d = static_cast<struct cluster_receiver_data *>(user_data);
+ struct cluster_receiver_data *d =
+ static_cast<struct cluster_receiver_data *>(user_data);
if (gst_is_wayland_display_handle_need_context_message(message)) {
GstContext *context;
- struct wl_display *display_handle;
-
- display_handle =
- static_cast<struct wl_display *>(
- d->native->nativeResourceForIntegration("display")
- );
+ struct wl_display *display_handle = d->window->display->wl_display;
context = gst_wayland_display_handle_context_new(display_handle);
-
d->wl_video = GST_WAYLAND_VIDEO(GST_MESSAGE_SRC(message));
gst_element_set_context(GST_ELEMENT(GST_MESSAGE_SRC(message)), context);
goto drop;
} else if (gst_is_video_overlay_prepare_window_handle_message(message)) {
- struct wl_surface *window_handle;
- QWindow *win = d->widget->windowHandle();
-
- if (!d->widget_has_buffer_mapped) {
- d->widget->setVisible(true);
- d->widget_has_buffer_mapped = true;
- }
+ struct wl_surface *window_handle = d->window->surface;
/* GST_MESSAGE_SRC(message) will be the overlay object that we
* have to use. This may be waylandsink, but it may also be
@@ -131,16 +571,15 @@ bus_sync_handler(GstBus *bus, GstMessage *message, gpointer user_data)
* window handle and render_rectangle after restarting playback
* and the actual window size is lost */
d->overlay = GST_VIDEO_OVERLAY(GST_MESSAGE_SRC(message));
- window_handle = getWlSurface(d->native, win);
g_print("setting window handle and size (%d x %d) w %d, h %d\n",
- d->window_data.x, d->window_data.y,
- d->window_data.width, d->window_data.height);
+ d->window->x, d->window->y,
+ d->window->width, d->window->height);
gst_video_overlay_set_window_handle(d->overlay, (guintptr) window_handle);
gst_video_overlay_set_render_rectangle(d->overlay,
- d->window_data.x, d->window_data.y,
- d->window_data.width, d->window_data.height);
+ d->window->x, d->window->y,
+ d->window->width, d->window->height);
goto drop;
}
@@ -152,40 +591,227 @@ drop:
return GST_BUS_DROP;
}
-int main(int argc, char *argv[])
+static void
+handle_xdg_surface_configure(void *data, struct xdg_surface *surface, uint32_t serial)
{
- int port = 0;
- std::string token;
- std::string role = "receiver";
- QString my_role = "receiver";
+ struct window *window = static_cast<struct window *>(data);
- struct cluster_receiver_data receiver_data = {};
- struct cluster_window_data window_data = {};
+ xdg_surface_ack_configure(surface, serial);
+
+ if (window->wait_for_configure) {
+ redraw(window, NULL, 0);
+ window->wait_for_configure = false;
+ }
+}
+
+static const struct xdg_surface_listener xdg_surface_listener = {
+ handle_xdg_surface_configure,
+};
+
+static void
+handle_xdg_toplevel_configure(void *data, struct xdg_toplevel *xdg_toplevel,
+ int32_t width, int32_t height,
+ struct wl_array *states)
+{
+ struct window *window = static_cast<struct window *>(data);
+ uint32_t *p;
+
+ window->fullscreen = 0;
+ window->maximized = 0;
+
+ // use our own macro as C++ can't typecast from (void *) directly
+ WL_ARRAY_FOR_EACH(p, states, uint32_t *) {
+ uint32_t state = *p;
+ switch (state) {
+ case XDG_TOPLEVEL_STATE_FULLSCREEN:
+ window->fullscreen = 1;
+ break;
+ case XDG_TOPLEVEL_STATE_MAXIMIZED:
+ window->maximized = 1;
+ break;
+ }
+ }
+
+ fprintf(stdout, "Got handle_xdg_toplevel_configure() "
+ "width %d, height %d, full %d, max %d\n", width, height,
+ window->fullscreen, window->maximized);
+
+ if (width > 0 && height > 0) {
+ if (!window->fullscreen && !window->maximized) {
+ window->width = width;
+ window->height = height;
+ }
+ window->width = width;
+ window->height = height;
+ } else if (!window->fullscreen && !window->maximized) {
+ if (width == 0)
+ window->width = WINDOW_WIDTH_SIZE;
+ else
+ window->width = width;
+
+ if (height == 0)
+ window->height = WINDOW_HEIGHT_SIZE;
+ else
+ window->height = height;
+ }
+
+ fprintf(stdout, "settting width %d, height %d\n",
+ window->width, window->height);
+}
+
+static void
+handle_xdg_toplevel_close(void *data, struct xdg_toplevel *xdg_toplevel)
+{
+ running = 0;
+}
+
+static const struct xdg_toplevel_listener xdg_toplevel_listener = {
+ handle_xdg_toplevel_configure,
+ handle_xdg_toplevel_close,
+};
+
+static struct window *
+create_window(struct display *display, int width, int height, const char *app_id)
+{
+ struct window *window;
+
+ assert(display->wm_base != NULL);
+
+ window = static_cast<struct window *>(zalloc(sizeof(*window)));
+ if (!window)
+ return NULL;
- window_data.x = 0;
- window_data.y = 0;
+ window->callback = NULL;
+ window->display = display;
+ window->width = width;
+ window->height = height;
+ window->surface = wl_compositor_create_surface(display->wl_compositor);
- window_data.width = WINDOW_WIDTH_SIZE;
- window_data.height = WINDOW_HEIGHT_SIZE;
+ if (display->wm_base) {
+ window->xdg_surface =
+ xdg_wm_base_get_xdg_surface(display->wm_base, window->surface);
+ assert(window->xdg_surface);
- receiver_data.window_data = window_data;
+ xdg_surface_add_listener(window->xdg_surface,
+ &xdg_surface_listener, window);
+ window->xdg_toplevel = xdg_surface_get_toplevel(window->xdg_surface);
+ assert(window->xdg_toplevel);
+
+ xdg_toplevel_add_listener(window->xdg_toplevel,
+ &xdg_toplevel_listener, window);
+
+ xdg_toplevel_set_app_id(window->xdg_toplevel, app_id);
+
+ wl_surface_commit(window->surface);
+ window->wait_for_configure = true;
+ }
+
+ return window;
+}
+
+
+static void
+destroy_window(struct window *window)
+{
+ if (window->callback)
+ wl_callback_destroy(window->callback);
+
+ if (window->xdg_toplevel)
+ xdg_toplevel_destroy(window->xdg_toplevel);
+
+ if (window->xdg_surface)
+ xdg_surface_destroy(window->xdg_surface);
+
+ wl_surface_destroy(window->surface);
+ free(window);
+}
+
+static void
+signal_int(int sig, siginfo_t *si, void *_unused)
+{
+ running = 0;
+}
+
+static struct display *
+create_display(int argc, char *argv[])
+{
+ struct display *display;
+
+ display = static_cast<struct display *>(zalloc(sizeof(*display)));
+ if (display == NULL) {
+ fprintf(stderr, "out of memory\n");
+ exit(1);
+ }
+ display->wl_display = wl_display_connect(NULL);
+ assert(display->wl_display);
+
+ display->has_xrgb = false;
+ display->wl_registry = wl_display_get_registry(display->wl_display);
+
+ wl_registry_add_listener(display->wl_registry, &registry_listener, display);
+ wl_display_roundtrip(display->wl_display);
+
+ if (display->shm == NULL) {
+ fprintf(stderr, "No wl_shm global\n");
+ return NULL;
+ }
+
+ if (display->agl_shell_desktop == NULL) {
+ fprintf(stderr, "No agl_shell extension present\n");
+ return NULL;
+ }
+
+ wl_display_roundtrip(display->wl_display);
+
+ if (!display->has_xrgb) {
+ fprintf(stderr, "WL_SHM_FORMAT_XRGB32 not available\n");
+ return NULL;
+ }
+
+ return display;
+}
+
+static void
+destroy_display(struct display *display)
+{
+ if (display->shm)
+ wl_shm_destroy(display->shm);
+
+ if (display->wm_base)
+ xdg_wm_base_destroy(display->wm_base);
+
+ if (display->agl_shell_desktop)
+ agl_shell_desktop_destroy(display->agl_shell_desktop);
+
+ if (display->wl_compositor)
+ wl_compositor_destroy(display->wl_compositor);
+
+ wl_registry_destroy(display->wl_registry);
+ wl_display_flush(display->wl_display);
+ wl_display_disconnect(display->wl_display);
+ free(display);
+}
+
+int main(int argc, char *argv[])
+{
+ int ret = 0;
+ struct sigaction sa;
+ struct cluster_receiver_data receiver_data = {};
+ struct display *display;
+ struct window *window;
+
+ std::string role = "receiver";
+
+ sa.sa_sigaction = signal_int;
+ sigemptyset(&sa.sa_mask);
+ sa.sa_flags = SA_RESETHAND | SA_SIGINFO;
+ sigaction(SIGINT, &sa, NULL);
int gargc = 2;
char **gargv = (char**) malloc(2 * sizeof(char*));
gargv[0] = strdup(argv[0]);
gargv[1] = strdup("--gst-debug-level=2");
- try {
- port = std::stol(argv[1]);
- token = argv[2];
- } catch (const std::invalid_argument& e) {
- std::cerr << "Invalid argument" << std::endl;
- exit(1);
- } catch (const std::out_of_range& e) {
- std::cerr << "Port out of range" << std::endl;
- exit(1);
- }
-
std::string pipeline_str = \
"rtpbin name=rtpbin udpsrc "
"caps=\"application/x-rtp,media=(string)video,clock-rate=(int)90000,encoding-name=JPEG,payload=26\" "
@@ -196,37 +822,37 @@ int main(int argc, char *argv[])
std::cout << "Using pipeline: " << pipeline_str << std::endl;
- QApplication app(argc, argv);
- QPlatformNativeInterface *native = qApp->platformNativeInterface();
- receiver_data.native = native;
-
- // mark the application id -> my_role
- app.setDesktopFileName(my_role);
-
- SurfaceHandler handler(port, token, role);
-
- // we already have the app_id -> role this will set-up the x and y
- // position and a bounding box that will be used to clip out the
- // surface. Note, that in this example, the surface area is the same as
- // the bounding box
- handler.set_bounding_box(WINDOW_WIDTH_POS_X, WINDOW_WIDTH_POS_Y,
- 0, 0, WINDOW_WIDTH_SIZE, WINDOW_HEIGHT_SIZE);
-
- QWidget *widget = new QWidget;
- widget->resize(WINDOW_WIDTH_SIZE,
- WINDOW_HEIGHT_SIZE);
- widget->setVisible(false);
- // this is necessary to trigger a buffer attach on the xdg surface;
- // waylandsink will use that surface to create a sub-surface and will
- // perform a commit on the parent one; without doing a show() here
- // QtWayland will not attach the buffer to the surface, and the parent
- // surface will not be 'committed'; most likely this require more
- // fiddling as to keep the buffer attached but not displayed or use
- // some kind of local alpha to display that cluster is showing
- widget->show();
-
- receiver_data.widget = widget;
- receiver_data.widget_has_buffer_mapped = true;
+ display = create_display(argc, argv);
+ if (!display)
+ return -1;
+
+ // this will set-up the x and y position and a bounding box that will
+ // be used to clip out the surface. Note, that in this example, the
+ // surface area is the same as the bounding box.
+ agl_shell_desktop_set_app_property(display->agl_shell_desktop, role.c_str(),
+ AGL_SHELL_DESKTOP_APP_ROLE_POPUP,
+ WINDOW_WIDTH_POS_X, WINDOW_WIDTH_POS_Y,
+ 0, 0, WINDOW_WIDTH_SIZE, WINDOW_HEIGHT_SIZE,
+ display->wl_output);
+
+ // we use the role to set a correspondence between the top level
+ // surface and our application, with the previous call letting the
+ // compositor know that we're one and the same
+ window = create_window(display, WINDOW_WIDTH_SIZE,
+ WINDOW_HEIGHT_SIZE, role.c_str());
+
+ if (!window)
+ return -1;
+
+ window->display = display;
+ receiver_data.window = window;
+
+ /* Initialise damage to full surface, so the padding gets painted */
+ wl_surface_damage(window->surface, 0, 0,
+ window->width, window->height);
+
+ if (!window->wait_for_configure)
+ redraw(window, NULL, 0);
GstElement *pipeline = gst_parse_launch(pipeline_str.c_str(), NULL);
if (!pipeline) {
@@ -242,21 +868,15 @@ int main(int argc, char *argv[])
gst_bus_set_sync_handler(bus, bus_sync_handler, &receiver_data, NULL);
gst_object_unref(bus);
- // Start the pipeline, giving Qt the time to create everything; not
- // waiting here will cause both Qt and Gstreamer to race, running as
- // different threads. So this gives Qt sufficient time to create the
- // Widget, the surface the buffer and attach it to the surface. The
- // drawback is that it will displayed until the remote side start
- // sending frames to decode.
- std::cout << "wainting for Qt to be ready..." << std::endl;
- QTimer::singleShot(500, [pipeline](){
- gst_element_set_state(pipeline, GST_STATE_PLAYING);
- std::cout << "gstreamer pipeline running" << std::endl;
- });
+ gst_element_set_state(pipeline, GST_STATE_PLAYING);
+ std::cout << "gstreamer pipeline running" << std::endl;
// run the application
- int ret = app.exec();
- widget->hide();
+ while (running && ret != -1)
+ ret = wl_display_dispatch(display->wl_display);
+
+ destroy_window(window);
+ destroy_display(display);
gst_element_set_state(pipeline, GST_STATE_NULL);
gst_object_unref(pipeline);