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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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991bcb22d5
The previous version of the SHM export support still required a valid EGLDisplay. The upcoming WPEBackend-FDO 1.8.x aims to remove this requirement, hence allowing wpesrc to be used without GPU.
124 lines
3.4 KiB
C++
124 lines
3.4 KiB
C++
/* Copyright (C) <2018> 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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#pragma once
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#include <EGL/egl.h>
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#include <glib.h>
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#include <gst/gl/gstglfuncs.h>
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#include <wpe/fdo.h>
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#include <wpe/fdo-egl.h>
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#include <wpe/webkit.h>
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#include "gstwpesrc.h"
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typedef struct _GstGLContext GstGLContext;
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typedef struct _GstGLDisplay GstGLDisplay;
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typedef struct _GstEGLImage GstEGLImage;
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#if defined(WPE_FDO_CHECK_VERSION) && WPE_FDO_CHECK_VERSION(1, 7, 0)
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#define ENABLE_SHM_BUFFER_SUPPORT 1
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#else
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#define ENABLE_SHM_BUFFER_SUPPORT 0
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#endif
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class WPEThreadedView {
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public:
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WPEThreadedView();
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~WPEThreadedView();
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bool initialize(GstWpeSrc*, GstGLContext*, GstGLDisplay*, int width, int height);
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void resize(int width, int height);
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void loadUri(const gchar*);
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void loadData(GBytes*);
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void setDrawBackground(gboolean);
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GstEGLImage* image();
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GstBuffer* buffer();
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struct wpe_view_backend* backend() const;
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protected:
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void handleExportedImage(gpointer);
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#if ENABLE_SHM_BUFFER_SUPPORT
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void handleExportedBuffer(struct wpe_fdo_shm_exported_buffer*);
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#endif
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private:
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void frameComplete();
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void loadUriUnlocked(const gchar*);
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void releaseImage(gpointer);
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#if ENABLE_SHM_BUFFER_SUPPORT
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void releaseSHMBuffer(gpointer);
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static void s_releaseSHMBuffer(gpointer);
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#endif
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static void s_loadEvent(WebKitWebView*, WebKitLoadEvent, gpointer);
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static gpointer s_viewThread(gpointer);
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struct {
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GMutex mutex;
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GCond cond;
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GMutex ready_mutex;
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GCond ready_cond;
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GThread* thread { nullptr };
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} threading;
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struct {
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GMainContext* context;
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GMainLoop* loop;
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} glib { nullptr, nullptr };
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struct {
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GstGLContext* context;
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GstGLDisplay* display;
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} gst { nullptr, nullptr };
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static struct wpe_view_backend_exportable_fdo_egl_client s_exportableEGLClient;
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#if ENABLE_SHM_BUFFER_SUPPORT
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static struct wpe_view_backend_exportable_fdo_client s_exportableClient;
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#endif
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static void s_releaseImage(GstEGLImage*, gpointer);
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struct {
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struct wpe_view_backend_exportable_fdo* exportable;
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int width;
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int height;
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} wpe { nullptr, 0, 0 };
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struct {
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gchar* uri;
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WebKitWebView* view;
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} webkit = { nullptr, nullptr };
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// This mutex guards access to either egl or shm resources declared below,
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// depending on the runtime behavior.
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GMutex images_mutex;
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struct {
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GstEGLImage* pending;
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GstEGLImage* committed;
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} egl { nullptr, nullptr };
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struct {
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GstBuffer* pending;
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GstBuffer* committed;
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} shm { nullptr, nullptr };
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};
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