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8ef30a9ce5
As waiting for the load to be finished is specific to the WebView, it should be done from our WPEView, not from the WPEContextThread. This fixes issues where multiple wpesrc elements are created in sequence. Without this patch the first view might receive erroneous buffer notifications. Fixes #1386 Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1568>
619 lines
18 KiB
C++
619 lines
18 KiB
C++
/* Copyright (C) <2018, 2019, 2020> Philippe Normand <philn@igalia.com>
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* Copyright (C) <2018> Žan Doberšek <zdobersek@igalia.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "WPEThreadedView.h"
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#include <gst/gl/gl.h>
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#include <gst/gl/egl/gsteglimage.h>
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#include <gst/gl/egl/gstgldisplay_egl.h>
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#include <wayland-server.h>
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#include <cstdio>
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#include <mutex>
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#if ENABLE_SHM_BUFFER_SUPPORT
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#include <wpe/unstable/fdo-shm.h>
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#endif
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GST_DEBUG_CATEGORY_EXTERN (wpe_src_debug);
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#define GST_CAT_DEFAULT wpe_src_debug
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#if defined(WPE_FDO_CHECK_VERSION) && WPE_FDO_CHECK_VERSION(1, 3, 0)
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#define USE_DEPRECATED_FDO_EGL_IMAGE 0
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#define WPE_GLIB_SOURCE_PRIORITY G_PRIORITY_DEFAULT
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#else
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#define USE_DEPRECATED_FDO_EGL_IMAGE 1
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#define WPE_GLIB_SOURCE_PRIORITY -70
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#endif
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class GMutexHolder {
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public:
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GMutexHolder(GMutex& mutex)
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: m(mutex)
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{
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g_mutex_lock(&m);
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}
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~GMutexHolder()
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{
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g_mutex_unlock(&m);
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}
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private:
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GMutex& m;
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};
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static WPEContextThread *s_view = NULL;
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WPEContextThread& WPEContextThread::singleton()
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{
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if (!s_view)
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s_view = new WPEContextThread;
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return *s_view;
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}
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WPEContextThread::WPEContextThread()
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{
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g_mutex_init(&threading.mutex);
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g_cond_init(&threading.cond);
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{
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GMutexHolder lock(threading.mutex);
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threading.thread = g_thread_new("WPEContextThread", s_viewThread, this);
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g_cond_wait(&threading.cond, &threading.mutex);
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GST_DEBUG("thread spawned");
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}
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}
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WPEContextThread::~WPEContextThread()
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{
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if (threading.thread) {
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g_thread_unref(threading.thread);
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threading.thread = nullptr;
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}
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g_mutex_clear(&threading.mutex);
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g_cond_clear(&threading.cond);
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}
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template<typename Function>
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void WPEContextThread::dispatch(Function func)
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{
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struct Payload {
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Function& func;
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};
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struct Payload payload { func };
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GSource* source = g_idle_source_new();
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g_source_set_callback(source, [](gpointer data) -> gboolean {
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auto& view = WPEContextThread::singleton();
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GMutexHolder lock(view.threading.mutex);
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auto* payload = static_cast<struct Payload*>(data);
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payload->func();
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g_cond_signal(&view.threading.cond);
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return G_SOURCE_REMOVE;
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}, &payload, nullptr);
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g_source_set_priority(source, WPE_GLIB_SOURCE_PRIORITY);
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{
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GMutexHolder lock(threading.mutex);
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g_source_attach(source, glib.context);
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g_cond_wait(&threading.cond, &threading.mutex);
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}
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g_source_unref(source);
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}
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gpointer WPEContextThread::s_viewThread(gpointer data)
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{
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auto& view = *static_cast<WPEContextThread*>(data);
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view.glib.context = g_main_context_new();
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view.glib.loop = g_main_loop_new(view.glib.context, FALSE);
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g_main_context_push_thread_default(view.glib.context);
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{
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GSource* source = g_idle_source_new();
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g_source_set_callback(source,
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[](gpointer data) -> gboolean {
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auto& view = *static_cast<WPEContextThread*>(data);
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GMutexHolder lock(view.threading.mutex);
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g_cond_signal(&view.threading.cond);
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return G_SOURCE_REMOVE;
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},
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&view, nullptr);
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g_source_attach(source, view.glib.context);
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g_source_unref(source);
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}
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g_main_loop_run(view.glib.loop);
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g_main_loop_unref(view.glib.loop);
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view.glib.loop = nullptr;
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g_main_context_pop_thread_default(view.glib.context);
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g_main_context_unref(view.glib.context);
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view.glib.context = nullptr;
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return nullptr;
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}
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WPEView* WPEContextThread::createWPEView(GstWpeSrc* src, GstGLContext* context, GstGLDisplay* display, int width, int height)
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{
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GST_DEBUG("context %p display %p, size (%d,%d)", context, display, width, height);
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static std::once_flag s_loaderFlag;
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std::call_once(s_loaderFlag,
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[] {
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#if defined(WPE_BACKEND_CHECK_VERSION) && WPE_BACKEND_CHECK_VERSION(1, 2, 0)
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wpe_loader_init("libWPEBackend-fdo-1.0.so");
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#endif
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});
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WPEView* view = nullptr;
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dispatch([&]() mutable {
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if (!glib.web_context) {
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auto* manager = webkit_website_data_manager_new_ephemeral();
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glib.web_context = webkit_web_context_new_with_website_data_manager(manager);
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g_object_unref(manager);
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}
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view = new WPEView(glib.web_context, src, context, display, width, height);
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});
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if (view && view->hasUri()) {
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GST_DEBUG("waiting load to finish");
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view->waitLoadCompletion();
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GST_DEBUG("done");
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}
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return view;
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}
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static gboolean s_loadFailed(WebKitWebView*, WebKitLoadEvent, gchar* failing_uri, GError* error, gpointer data)
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{
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GstWpeSrc* src = GST_WPE_SRC(data);
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GST_ELEMENT_ERROR (GST_ELEMENT_CAST(src), RESOURCE, FAILED, (NULL), ("Failed to load %s (%s)", failing_uri, error->message));
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return FALSE;
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}
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static gboolean s_loadFailedWithTLSErrors(WebKitWebView*, gchar* failing_uri, GTlsCertificate*, GTlsCertificateFlags, gpointer data)
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{
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// Defer to load-failed.
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return FALSE;
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}
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WPEView::WPEView(WebKitWebContext* web_context, GstWpeSrc* src, GstGLContext* context, GstGLDisplay* display, int width, int height)
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{
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g_mutex_init(&threading.ready_mutex);
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g_cond_init(&threading.ready_cond);
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threading.ready = FALSE;
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g_mutex_init(&images_mutex);
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if (context)
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gst.context = GST_GL_CONTEXT(gst_object_ref(context));
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if (display)
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gst.display = GST_GL_DISPLAY(gst_object_ref(display));
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wpe.width = width;
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wpe.height = height;
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EGLDisplay eglDisplay = EGL_NO_DISPLAY;
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if (context && display)
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eglDisplay = gst_gl_display_egl_get_from_native(GST_GL_DISPLAY_TYPE_WAYLAND, gst_gl_display_get_handle(display));
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GST_DEBUG("eglDisplay %p", eglDisplay);
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if (eglDisplay) {
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m_isValid = wpe_fdo_initialize_for_egl_display(eglDisplay);
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GST_DEBUG("FDO EGL display initialisation result: %d", m_isValid);
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} else {
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#if ENABLE_SHM_BUFFER_SUPPORT
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m_isValid = wpe_fdo_initialize_shm();
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GST_DEBUG("FDO SHM initialisation result: %d", m_isValid);
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#else
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GST_WARNING("FDO SHM support is available only in WPEBackend-FDO 1.7.0");
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#endif
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}
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if (!m_isValid)
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return;
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if (eglDisplay) {
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wpe.exportable = wpe_view_backend_exportable_fdo_egl_create(&s_exportableEGLClient, this, wpe.width, wpe.height);
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} else {
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#if ENABLE_SHM_BUFFER_SUPPORT
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wpe.exportable = wpe_view_backend_exportable_fdo_create(&s_exportableClient, this, wpe.width, wpe.height);
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#endif
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}
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auto* wpeViewBackend = wpe_view_backend_exportable_fdo_get_view_backend(wpe.exportable);
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auto* viewBackend = webkit_web_view_backend_new(wpeViewBackend, (GDestroyNotify) wpe_view_backend_exportable_fdo_destroy, wpe.exportable);
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#if defined(WPE_BACKEND_CHECK_VERSION) && WPE_BACKEND_CHECK_VERSION(1, 1, 0)
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wpe_view_backend_add_activity_state(wpeViewBackend, wpe_view_activity_state_visible | wpe_view_activity_state_focused | wpe_view_activity_state_in_window);
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#endif
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webkit.view = WEBKIT_WEB_VIEW(g_object_new(WEBKIT_TYPE_WEB_VIEW, "web-context", web_context, "backend", viewBackend, nullptr));
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g_signal_connect(webkit.view, "load-failed", G_CALLBACK(s_loadFailed), src);
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g_signal_connect(webkit.view, "load-failed-with-tls-errors", G_CALLBACK(s_loadFailedWithTLSErrors), src);
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gst_wpe_src_configure_web_view(src, webkit.view);
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const gchar* location;
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gboolean drawBackground = TRUE;
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g_object_get(src, "location", &location, "draw-background", &drawBackground, nullptr);
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setDrawBackground(drawBackground);
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if (location)
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loadUriUnlocked(location);
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}
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WPEView::~WPEView()
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{
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g_mutex_clear(&threading.ready_mutex);
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g_cond_clear(&threading.ready_cond);
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{
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GMutexHolder lock(images_mutex);
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if (egl.pending) {
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gst_egl_image_unref(egl.pending);
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egl.pending = nullptr;
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}
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if (egl.committed) {
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gst_egl_image_unref(egl.committed);
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egl.committed = nullptr;
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}
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}
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WPEContextThread::singleton().dispatch([&]() {
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if (webkit.view) {
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g_object_unref(webkit.view);
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webkit.view = nullptr;
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}
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});
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if (gst.display) {
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gst_object_unref(gst.display);
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gst.display = nullptr;
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}
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if (gst.context) {
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gst_object_unref(gst.context);
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gst.context = nullptr;
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}
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if (webkit.uri) {
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g_free(webkit.uri);
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webkit.uri = nullptr;
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}
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g_mutex_clear(&images_mutex);
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}
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void WPEView::notifyLoadFinished()
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{
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GMutexHolder lock(threading.ready_mutex);
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if (!threading.ready) {
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threading.ready = TRUE;
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g_cond_signal(&threading.ready_cond);
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}
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}
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void WPEView::waitLoadCompletion()
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{
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GMutexHolder lock(threading.ready_mutex);
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while (!threading.ready)
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g_cond_wait(&threading.ready_cond, &threading.ready_mutex);
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}
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GstEGLImage* WPEView::image()
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{
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GstEGLImage* ret = nullptr;
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bool dispatchFrameComplete = false;
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{
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GMutexHolder lock(images_mutex);
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GST_TRACE("pending %" GST_PTR_FORMAT " (%d) committed %" GST_PTR_FORMAT " (%d)", egl.pending,
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GST_IS_EGL_IMAGE(egl.pending) ? GST_MINI_OBJECT_REFCOUNT_VALUE(GST_MINI_OBJECT_CAST(egl.pending)) : 0,
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egl.committed,
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GST_IS_EGL_IMAGE(egl.committed) ? GST_MINI_OBJECT_REFCOUNT_VALUE(GST_MINI_OBJECT_CAST(egl.committed)) : 0);
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if (egl.pending) {
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auto* previousImage = egl.committed;
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egl.committed = egl.pending;
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egl.pending = nullptr;
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if (previousImage)
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gst_egl_image_unref(previousImage);
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dispatchFrameComplete = true;
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}
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if (egl.committed)
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ret = egl.committed;
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}
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if (dispatchFrameComplete)
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frameComplete();
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return ret;
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}
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GstBuffer* WPEView::buffer()
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{
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GstBuffer* ret = nullptr;
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bool dispatchFrameComplete = false;
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{
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GMutexHolder lock(images_mutex);
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GST_TRACE("pending %" GST_PTR_FORMAT " (%d) committed %" GST_PTR_FORMAT " (%d)", shm.pending,
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GST_IS_BUFFER(shm.pending) ? GST_MINI_OBJECT_REFCOUNT_VALUE(GST_MINI_OBJECT_CAST(shm.pending)) : 0,
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shm.committed,
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GST_IS_BUFFER(shm.committed) ? GST_MINI_OBJECT_REFCOUNT_VALUE(GST_MINI_OBJECT_CAST(shm.committed)) : 0);
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if (shm.pending) {
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auto* previousImage = shm.committed;
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shm.committed = shm.pending;
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shm.pending = nullptr;
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if (previousImage)
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gst_buffer_unref(previousImage);
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dispatchFrameComplete = true;
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}
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if (shm.committed)
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ret = shm.committed;
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}
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if (dispatchFrameComplete)
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frameComplete();
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return ret;
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}
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void WPEView::resize(int width, int height)
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{
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GST_DEBUG("resize to %dx%d", width, height);
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wpe.width = width;
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wpe.height = height;
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s_view->dispatch([&]() {
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if (wpe.exportable && wpe_view_backend_exportable_fdo_get_view_backend(wpe.exportable))
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wpe_view_backend_dispatch_set_size(wpe_view_backend_exportable_fdo_get_view_backend(wpe.exportable), wpe.width, wpe.height);
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});
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}
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void WPEView::frameComplete()
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{
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GST_TRACE("frame complete");
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s_view->dispatch([&]() {
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GST_TRACE("dispatching");
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wpe_view_backend_exportable_fdo_dispatch_frame_complete(wpe.exportable);
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});
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}
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void WPEView::loadUriUnlocked(const gchar* uri)
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{
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if (webkit.uri)
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g_free(webkit.uri);
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GST_DEBUG("loading %s", uri);
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webkit.uri = g_strdup(uri);
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webkit_web_view_load_uri(webkit.view, webkit.uri);
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}
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void WPEView::loadUri(const gchar* uri)
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{
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s_view->dispatch([&]() {
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loadUriUnlocked(uri);
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});
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}
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void WPEView::loadData(GBytes* bytes)
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{
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s_view->dispatch([this, bytes = g_bytes_ref(bytes)]() {
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webkit_web_view_load_bytes(webkit.view, bytes, nullptr, nullptr, nullptr);
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g_bytes_unref(bytes);
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});
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}
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void WPEView::setDrawBackground(gboolean drawsBackground)
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{
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#if WEBKIT_CHECK_VERSION(2, 24, 0)
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GST_DEBUG("%s background rendering", drawsBackground ? "Enabling" : "Disabling");
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WebKitColor color;
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webkit_color_parse(&color, drawsBackground ? "white" : "transparent");
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webkit_web_view_set_background_color(webkit.view, &color);
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#else
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GST_FIXME("webkit_web_view_set_background_color is not implemented in WPE %u.%u. Please upgrade to 2.24", webkit_get_major_version(), webkit_get_minor_version());
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#endif
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}
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void WPEView::releaseImage(gpointer imagePointer)
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{
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s_view->dispatch([&]() {
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GST_TRACE("Dispatch release exported image %p", imagePointer);
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#if USE_DEPRECATED_FDO_EGL_IMAGE
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wpe_view_backend_exportable_fdo_egl_dispatch_release_image(wpe.exportable,
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static_cast<EGLImageKHR>(imagePointer));
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#else
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wpe_view_backend_exportable_fdo_egl_dispatch_release_exported_image(wpe.exportable,
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static_cast<struct wpe_fdo_egl_exported_image*>(imagePointer));
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#endif
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});
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}
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struct ImageContext {
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WPEView* view;
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gpointer image;
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};
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void WPEView::handleExportedImage(gpointer image)
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{
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ImageContext* imageContext = g_slice_new(ImageContext);
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imageContext->view = this;
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imageContext->image = static_cast<gpointer>(image);
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EGLImageKHR eglImage;
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#if USE_DEPRECATED_FDO_EGL_IMAGE
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eglImage = static_cast<EGLImageKHR>(image);
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#else
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eglImage = wpe_fdo_egl_exported_image_get_egl_image(static_cast<struct wpe_fdo_egl_exported_image*>(image));
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#endif
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auto* gstImage = gst_egl_image_new_wrapped(gst.context, eglImage, GST_GL_RGBA, imageContext, s_releaseImage);
|
|
{
|
|
GMutexHolder lock(images_mutex);
|
|
|
|
GST_TRACE("EGLImage %p wrapped in GstEGLImage %" GST_PTR_FORMAT, eglImage, gstImage);
|
|
egl.pending = gstImage;
|
|
|
|
notifyLoadFinished();
|
|
}
|
|
}
|
|
|
|
#if ENABLE_SHM_BUFFER_SUPPORT
|
|
struct SHMBufferContext {
|
|
WPEView* view;
|
|
struct wpe_fdo_shm_exported_buffer* buffer;
|
|
};
|
|
|
|
void WPEView::releaseSHMBuffer(gpointer data)
|
|
{
|
|
SHMBufferContext* context = static_cast<SHMBufferContext*>(data);
|
|
s_view->dispatch([&]() {
|
|
auto* buffer = static_cast<struct wpe_fdo_shm_exported_buffer*>(context->buffer);
|
|
GST_TRACE("Dispatch release exported buffer %p", buffer);
|
|
wpe_view_backend_exportable_fdo_dispatch_release_shm_exported_buffer(wpe.exportable, buffer);
|
|
});
|
|
}
|
|
|
|
void WPEView::s_releaseSHMBuffer(gpointer data)
|
|
{
|
|
SHMBufferContext* context = static_cast<SHMBufferContext*>(data);
|
|
context->view->releaseSHMBuffer(data);
|
|
g_slice_free(SHMBufferContext, context);
|
|
}
|
|
|
|
void WPEView::handleExportedBuffer(struct wpe_fdo_shm_exported_buffer* buffer)
|
|
{
|
|
struct wl_shm_buffer* shmBuffer = wpe_fdo_shm_exported_buffer_get_shm_buffer(buffer);
|
|
auto format = wl_shm_buffer_get_format(shmBuffer);
|
|
if (format != WL_SHM_FORMAT_ARGB8888 && format != WL_SHM_FORMAT_XRGB8888) {
|
|
GST_ERROR("Unsupported pixel format: %d", format);
|
|
return;
|
|
}
|
|
|
|
int32_t width = wl_shm_buffer_get_width(shmBuffer);
|
|
int32_t height = wl_shm_buffer_get_height(shmBuffer);
|
|
gint stride = wl_shm_buffer_get_stride(shmBuffer);
|
|
gsize size = width * height * 4;
|
|
auto* data = static_cast<uint8_t*>(wl_shm_buffer_get_data(shmBuffer));
|
|
|
|
SHMBufferContext* bufferContext = g_slice_new(SHMBufferContext);
|
|
bufferContext->view = this;
|
|
bufferContext->buffer = buffer;
|
|
|
|
auto* gstBuffer = gst_buffer_new_wrapped_full(GST_MEMORY_FLAG_READONLY, data, size, 0, size, bufferContext, s_releaseSHMBuffer);
|
|
gsize offsets[1];
|
|
gint strides[1];
|
|
offsets[0] = 0;
|
|
strides[0] = stride;
|
|
gst_buffer_add_video_meta_full(gstBuffer, GST_VIDEO_FRAME_FLAG_NONE, GST_VIDEO_FORMAT_BGRA, width, height, 1, offsets, strides);
|
|
|
|
{
|
|
GMutexHolder lock(images_mutex);
|
|
GST_TRACE("SHM buffer %p wrapped in buffer %" GST_PTR_FORMAT, buffer, gstBuffer);
|
|
shm.pending = gstBuffer;
|
|
notifyLoadFinished();
|
|
}
|
|
}
|
|
#endif
|
|
|
|
struct wpe_view_backend_exportable_fdo_egl_client WPEView::s_exportableEGLClient = {
|
|
#if USE_DEPRECATED_FDO_EGL_IMAGE
|
|
// export_egl_image
|
|
[](void* data, EGLImageKHR image) {
|
|
auto& view = *static_cast<WPEView*>(data);
|
|
view.handleExportedImage(static_cast<gpointer>(image));
|
|
},
|
|
nullptr, nullptr,
|
|
#else
|
|
// export_egl_image
|
|
nullptr,
|
|
[](void* data, struct wpe_fdo_egl_exported_image* image) {
|
|
auto& view = *static_cast<WPEView*>(data);
|
|
view.handleExportedImage(static_cast<gpointer>(image));
|
|
},
|
|
nullptr,
|
|
#endif // USE_DEPRECATED_FDO_EGL_IMAGE
|
|
// padding
|
|
nullptr, nullptr
|
|
};
|
|
|
|
#if ENABLE_SHM_BUFFER_SUPPORT
|
|
struct wpe_view_backend_exportable_fdo_client WPEView::s_exportableClient = {
|
|
nullptr,
|
|
nullptr,
|
|
// export_shm_buffer
|
|
[](void* data, struct wpe_fdo_shm_exported_buffer* buffer) {
|
|
auto& view = *static_cast<WPEView*>(data);
|
|
view.handleExportedBuffer(buffer);
|
|
},
|
|
nullptr,
|
|
nullptr,
|
|
};
|
|
#endif
|
|
|
|
void WPEView::s_releaseImage(GstEGLImage* image, gpointer data)
|
|
{
|
|
ImageContext* context = static_cast<ImageContext*>(data);
|
|
context->view->releaseImage(context->image);
|
|
g_slice_free(ImageContext, context);
|
|
}
|
|
|
|
struct wpe_view_backend* WPEView::backend() const
|
|
{
|
|
return wpe.exportable ? wpe_view_backend_exportable_fdo_get_view_backend(wpe.exportable) : nullptr;
|
|
}
|
|
|
|
void WPEView::dispatchKeyboardEvent(struct wpe_input_keyboard_event& wpe_event)
|
|
{
|
|
s_view->dispatch([&]() {
|
|
wpe_view_backend_dispatch_keyboard_event(backend(), &wpe_event);
|
|
});
|
|
}
|
|
|
|
void WPEView::dispatchPointerEvent(struct wpe_input_pointer_event& wpe_event)
|
|
{
|
|
s_view->dispatch([&]() {
|
|
wpe_view_backend_dispatch_pointer_event(backend(), &wpe_event);
|
|
});
|
|
}
|
|
|
|
void WPEView::dispatchAxisEvent(struct wpe_input_axis_event& wpe_event)
|
|
{
|
|
s_view->dispatch([&]() {
|
|
wpe_view_backend_dispatch_axis_event(backend(), &wpe_event);
|
|
});
|
|
}
|