ext/wpe/WPEThreadedView.cpp

   1 /* Copyright (C) <2018, 2019, 2020> Philippe Normand <philn@igalia.com>
   2  * Copyright (C) <2018> Žan Doberšek <zdobersek@igalia.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
  17  * Boston, MA 02110-1301, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #include <config.h>
  22 #endif
  23
  24 #include "WPEThreadedView.h"
  25
  26 #include <gst/gl/gl.h>
  27 #include <gst/gl/egl/gsteglimage.h>
  28 #include <gst/gl/egl/gstgldisplay_egl.h>
  29 #include <wayland-server.h>
  30
  31 #include <cstdio>
  32 #include <mutex>
  33
  34 #if ENABLE_SHM_BUFFER_SUPPORT
  35 #include <wpe/unstable/fdo-shm.h>
  36 #endif
  37
  38 GST_DEBUG_CATEGORY_EXTERN (wpe_src_debug);
  39 #define GST_CAT_DEFAULT wpe_src_debug
  40
  41 #if defined(WPE_FDO_CHECK_VERSION) && WPE_FDO_CHECK_VERSION(1, 3, 0)
  42 #define USE_DEPRECATED_FDO_EGL_IMAGE 0
  43 #define WPE_GLIB_SOURCE_PRIORITY G_PRIORITY_DEFAULT
  44 #else
  45 #define USE_DEPRECATED_FDO_EGL_IMAGE 1
  46 #define WPE_GLIB_SOURCE_PRIORITY -70
  47 #endif
  48
  49 class GMutexHolder {
  50 public:
  51     GMutexHolder(GMutex& mutex)
  52         : m(mutex)
  53     {
  54         g_mutex_lock(&m);
  55     }
  56     ~GMutexHolder()
  57     {
  58         g_mutex_unlock(&m);
  59     }
  60
  61 private:
  62     GMutex& m;
  63 };
  64
  65 static WPEContextThread *s_view = NULL;
  66
  67 WPEContextThread& WPEContextThread::singleton()
  68 {
  69     static gsize initialized = 0;
  70
  71     if (g_once_init_enter (&initialized)) {
  72         s_view = new WPEContextThread;
  73
  74         g_once_init_leave (&initialized, 1);
  75     }
  76
  77     return *s_view;
  78 }
  79
  80 WPEContextThread::WPEContextThread()
  81 {
  82     g_mutex_init(&threading.mutex);
  83     g_cond_init(&threading.cond);
  84
  85     {
  86         GMutexHolder lock(threading.mutex);
  87         threading.thread = g_thread_new("WPEContextThread", s_viewThread, this);
  88         g_cond_wait(&threading.cond, &threading.mutex);
  89         GST_DEBUG("thread spawned");
  90     }
  91 }
  92
  93 WPEContextThread::~WPEContextThread()
  94 {
  95     if (threading.thread) {
  96         g_thread_unref(threading.thread);
  97         threading.thread = nullptr;
  98     }
  99
 100     g_mutex_clear(&threading.mutex);
 101     g_cond_clear(&threading.cond);
 102 }
 103
 104 template<typename Function>
 105 void WPEContextThread::dispatch(Function func)
 106 {
 107     struct Payload {
 108         Function& func;
 109     };
 110     struct Payload payload { func };
 111
 112     GSource* source = g_idle_source_new();
 113     g_source_set_callback(source, [](gpointer data) -> gboolean {
 114         auto& view = WPEContextThread::singleton();
 115         GMutexHolder lock(view.threading.mutex);
 116
 117         auto* payload = static_cast<struct Payload*>(data);
 118         payload->func();
 119
 120         g_cond_signal(&view.threading.cond);
 121         return G_SOURCE_REMOVE;
 122     }, &payload, nullptr);
 123     g_source_set_priority(source, WPE_GLIB_SOURCE_PRIORITY);
 124
 125     {
 126         GMutexHolder lock(threading.mutex);
 127         g_source_attach(source, glib.context);
 128         g_cond_wait(&threading.cond, &threading.mutex);
 129     }
 130
 131     g_source_unref(source);
 132 }
 133
 134 gpointer WPEContextThread::s_viewThread(gpointer data)
 135 {
 136     auto& view = *static_cast<WPEContextThread*>(data);
 137
 138     view.glib.context = g_main_context_new();
 139     view.glib.loop = g_main_loop_new(view.glib.context, FALSE);
 140
 141     g_main_context_push_thread_default(view.glib.context);
 142
 143     {
 144         GSource* source = g_idle_source_new();
 145         g_source_set_callback(source,
 146             [](gpointer data) -> gboolean {
 147                 auto& view = *static_cast<WPEContextThread*>(data);
 148                 GMutexHolder lock(view.threading.mutex);
 149                 g_cond_signal(&view.threading.cond);
 150                 return G_SOURCE_REMOVE;
 151             },
 152             &view, nullptr);
 153         g_source_attach(source, view.glib.context);
 154         g_source_unref(source);
 155     }
 156
 157     g_main_loop_run(view.glib.loop);
 158
 159     g_main_loop_unref(view.glib.loop);
 160     view.glib.loop = nullptr;
 161
 162     g_main_context_pop_thread_default(view.glib.context);
 163     g_main_context_unref(view.glib.context);
 164     view.glib.context = nullptr;
 165     return nullptr;
 166 }
 167
 168 WPEView* WPEContextThread::createWPEView(GstWpeSrc* src, GstGLContext* context, GstGLDisplay* display, int width, int height)
 169 {
 170     GST_DEBUG("context %p display %p, size (%d,%d)", context, display, width, height);
 171
 172     static std::once_flag s_loaderFlag;
 173     std::call_once(s_loaderFlag,
 174         [] {
 175 #if defined(WPE_BACKEND_CHECK_VERSION) && WPE_BACKEND_CHECK_VERSION(1, 2, 0)
 176             wpe_loader_init("libWPEBackend-fdo-1.0.so");
 177 #endif
 178         });
 179
 180     WPEView* view = nullptr;
 181     dispatch([&]() mutable {
 182         if (!glib.web_context) {
 183             auto* manager = webkit_website_data_manager_new_ephemeral();
 184             glib.web_context = webkit_web_context_new_with_website_data_manager(manager);
 185             g_object_unref(manager);
 186         }
 187
 188         view = new WPEView(glib.web_context, src, context, display, width, height);
 189     });
 190
 191     if (view && view->hasUri()) {
 192         GST_DEBUG("waiting load to finish");
 193         view->waitLoadCompletion();
 194         GST_DEBUG("done");
 195     }
 196
 197     return view;
 198 }
 199
 200 static gboolean s_loadFailed(WebKitWebView*, WebKitLoadEvent, gchar* failing_uri, GError* error, gpointer data)
 201 {
 202     GstWpeSrc* src = GST_WPE_SRC(data);
 203
 204     if (g_error_matches(error, WEBKIT_NETWORK_ERROR, WEBKIT_NETWORK_ERROR_CANCELLED)) {
 205         GST_INFO_OBJECT (src, "Loading cancelled.");
 206
 207         return FALSE;
 208     }
 209
 210     GST_ELEMENT_ERROR (GST_ELEMENT_CAST(src), RESOURCE, FAILED, (NULL), ("Failed to load %s (%s)", failing_uri, error->message));
 211     return FALSE;
 212 }
 213
 214 static gboolean s_loadFailedWithTLSErrors(WebKitWebView*,  gchar* failing_uri, GTlsCertificate*, GTlsCertificateFlags, gpointer data)
 215 {
 216     // Defer to load-failed.
 217     return FALSE;
 218 }
 219
 220 static void s_loadProgressChaned(GObject* object, GParamSpec*, gpointer data)
 221 {
 222     GstElement* src = GST_ELEMENT_CAST (data);
 223     // The src element is locked already so we can't call
 224     // gst_element_post_message(). Instead retrieve the bus manually and use it
 225     // directly.
 226     GstBus* bus = GST_ELEMENT_BUS (src);
 227     double estimatedProgress;
 228     g_object_get(object, "estimated-load-progress", &estimatedProgress, nullptr);
 229     gst_object_ref (bus);
 230     gst_bus_post (bus, gst_message_new_element(GST_OBJECT_CAST(src), gst_structure_new("wpe-stats", "estimated-load-progress", G_TYPE_DOUBLE, estimatedProgress * 100, nullptr)));
 231     gst_object_unref (bus);
 232 }
 233
 234 WPEView::WPEView(WebKitWebContext* web_context, GstWpeSrc* src, GstGLContext* context, GstGLDisplay* display, int width, int height)
 235 {
 236     g_mutex_init(&threading.ready_mutex);
 237     g_cond_init(&threading.ready_cond);
 238     threading.ready = FALSE;
 239
 240     g_mutex_init(&images_mutex);
 241     if (context)
 242         gst.context = GST_GL_CONTEXT(gst_object_ref(context));
 243     if (display) {
 244         gst.display = GST_GL_DISPLAY(gst_object_ref(display));
 245     }
 246
 247     wpe.width = width;
 248     wpe.height = height;
 249
 250     if (context && display) {
 251       if (gst_gl_context_get_gl_platform(context) == GST_GL_PLATFORM_EGL) {
 252         gst.display_egl = gst_gl_display_egl_from_gl_display (gst.display);
 253       } else {
 254         GST_DEBUG ("Available GStreamer GL Context is not EGL - not creating an EGL display from it");
 255       }
 256     }
 257
 258     if (gst.display_egl) {
 259         EGLDisplay eglDisplay = (EGLDisplay)gst_gl_display_get_handle (GST_GL_DISPLAY(gst.display_egl));
 260         GST_DEBUG("eglDisplay %p", eglDisplay);
 261
 262         m_isValid = wpe_fdo_initialize_for_egl_display(eglDisplay);
 263         GST_DEBUG("FDO EGL display initialisation result: %d", m_isValid);
 264     } else {
 265 #if ENABLE_SHM_BUFFER_SUPPORT
 266         m_isValid = wpe_fdo_initialize_shm();
 267         GST_DEBUG("FDO SHM initialisation result: %d", m_isValid);
 268 #else
 269         GST_WARNING("FDO SHM support is available only in WPEBackend-FDO 1.7.0");
 270 #endif
 271     }
 272     if (!m_isValid)
 273         return;
 274
 275     if (gst.display_egl) {
 276         wpe.exportable = wpe_view_backend_exportable_fdo_egl_create(&s_exportableEGLClient, this, wpe.width, wpe.height);
 277     } else {
 278 #if ENABLE_SHM_BUFFER_SUPPORT
 279         wpe.exportable = wpe_view_backend_exportable_fdo_create(&s_exportableClient, this, wpe.width, wpe.height);
 280 #endif
 281     }
 282
 283     auto* wpeViewBackend = wpe_view_backend_exportable_fdo_get_view_backend(wpe.exportable);
 284     auto* viewBackend = webkit_web_view_backend_new(wpeViewBackend, (GDestroyNotify) wpe_view_backend_exportable_fdo_destroy, wpe.exportable);
 285 #if defined(WPE_BACKEND_CHECK_VERSION) && WPE_BACKEND_CHECK_VERSION(1, 1, 0)
 286     wpe_view_backend_add_activity_state(wpeViewBackend, wpe_view_activity_state_visible | wpe_view_activity_state_focused | wpe_view_activity_state_in_window);
 287 #endif
 288
 289     webkit.view = WEBKIT_WEB_VIEW(g_object_new(WEBKIT_TYPE_WEB_VIEW, "web-context", web_context, "backend", viewBackend, nullptr));
 290
 291     g_signal_connect(webkit.view, "load-failed", G_CALLBACK(s_loadFailed), src);
 292     g_signal_connect(webkit.view, "load-failed-with-tls-errors", G_CALLBACK(s_loadFailedWithTLSErrors), src);
 293     g_signal_connect(webkit.view, "notify::estimated-load-progress", G_CALLBACK(s_loadProgressChaned), src);
 294
 295     gst_wpe_src_configure_web_view(src, webkit.view);
 296
 297     const gchar* location;
 298     gboolean drawBackground = TRUE;
 299     g_object_get(src, "location", &location, "draw-background", &drawBackground, nullptr);
 300     setDrawBackground(drawBackground);
 301     if (location)
 302         loadUriUnlocked(location);
 303 }
 304
 305 WPEView::~WPEView()
 306 {
 307     GstEGLImage *egl_pending = NULL;
 308     GstEGLImage *egl_committed = NULL;
 309     GstBuffer *shm_pending = NULL;
 310     GstBuffer *shm_committed = NULL;
 311     GST_TRACE ("%p destroying", this);
 312
 313     g_mutex_clear(&threading.ready_mutex);
 314     g_cond_clear(&threading.ready_cond);
 315
 316     {
 317         GMutexHolder lock(images_mutex);
 318
 319         if (egl.pending) {
 320             egl_pending = egl.pending;
 321             egl.pending = nullptr;
 322         }
 323         if (egl.committed) {
 324             egl_committed = egl.committed;
 325             egl.committed = nullptr;
 326         }
 327         if (shm.pending) {
 328             GST_TRACE ("%p freeing shm pending %" GST_PTR_FORMAT, this, shm.pending);
 329             shm_pending = shm.pending;
 330             shm.pending = nullptr;
 331         }
 332         if (shm.committed) {
 333             GST_TRACE ("%p freeing shm commited %" GST_PTR_FORMAT, this, shm.committed);
 334             shm_committed = shm.committed;
 335             shm.committed = nullptr;
 336         }
 337     }
 338
 339     if (egl_pending)
 340         gst_egl_image_unref (egl_pending);
 341     if (egl_committed)
 342         gst_egl_image_unref (egl_committed);
 343     if (shm_pending)
 344         gst_buffer_unref (shm_pending);
 345     if (shm_committed)
 346         gst_buffer_unref (shm_committed);
 347
 348     WPEContextThread::singleton().dispatch([&]() {
 349         if (webkit.view) {
 350             g_object_unref(webkit.view);
 351             webkit.view = nullptr;
 352         }
 353     });
 354
 355     if (gst.display_egl) {
 356         gst_object_unref(gst.display_egl);
 357         gst.display_egl = nullptr;
 358     }
 359
 360     if (gst.display) {
 361         gst_object_unref(gst.display);
 362         gst.display = nullptr;
 363     }
 364
 365     if (gst.context) {
 366         gst_object_unref(gst.context);
 367         gst.context = nullptr;
 368     }
 369     if (webkit.uri) {
 370         g_free(webkit.uri);
 371         webkit.uri = nullptr;
 372     }
 373
 374     g_mutex_clear(&images_mutex);
 375     GST_TRACE ("%p destroyed", this);
 376 }
 377
 378 void WPEView::notifyLoadFinished()
 379 {
 380     GMutexHolder lock(threading.ready_mutex);
 381     if (!threading.ready) {
 382         threading.ready = TRUE;
 383         g_cond_signal(&threading.ready_cond);
 384     }
 385 }
 386
 387 void WPEView::waitLoadCompletion()
 388 {
 389     GMutexHolder lock(threading.ready_mutex);
 390     while (!threading.ready)
 391         g_cond_wait(&threading.ready_cond, &threading.ready_mutex);
 392 }
 393
 394 GstEGLImage* WPEView::image()
 395 {
 396     GstEGLImage* ret = nullptr;
 397     bool dispatchFrameComplete = false;
 398     GstEGLImage *prev_image = NULL;
 399
 400     {
 401         GMutexHolder lock(images_mutex);
 402
 403         GST_TRACE("pending %" GST_PTR_FORMAT " (%d) committed %" GST_PTR_FORMAT " (%d)", egl.pending,
 404                   GST_IS_EGL_IMAGE(egl.pending) ? GST_MINI_OBJECT_REFCOUNT_VALUE(GST_MINI_OBJECT_CAST(egl.pending)) : 0,
 405                   egl.committed,
 406                   GST_IS_EGL_IMAGE(egl.committed) ? GST_MINI_OBJECT_REFCOUNT_VALUE(GST_MINI_OBJECT_CAST(egl.committed)) : 0);
 407
 408         if (egl.pending) {
 409             prev_image = egl.committed;
 410             egl.committed = egl.pending;
 411             egl.pending = nullptr;
 412
 413             dispatchFrameComplete = true;
 414         }
 415
 416         if (egl.committed)
 417             ret = egl.committed;
 418     }
 419
 420     if (prev_image)
 421         gst_egl_image_unref(prev_image);
 422
 423     if (dispatchFrameComplete)
 424         frameComplete();
 425
 426     return ret;
 427 }
 428
 429 GstBuffer* WPEView::buffer()
 430 {
 431     GstBuffer* ret = nullptr;
 432     bool dispatchFrameComplete = false;
 433     GstBuffer *prev_image = NULL;
 434
 435     {
 436         GMutexHolder lock(images_mutex);
 437
 438         GST_TRACE("pending %" GST_PTR_FORMAT " (%d) committed %" GST_PTR_FORMAT " (%d)", shm.pending,
 439                   GST_IS_BUFFER(shm.pending) ? GST_MINI_OBJECT_REFCOUNT_VALUE(GST_MINI_OBJECT_CAST(shm.pending)) : 0,
 440                   shm.committed,
 441                   GST_IS_BUFFER(shm.committed) ? GST_MINI_OBJECT_REFCOUNT_VALUE(GST_MINI_OBJECT_CAST(shm.committed)) : 0);
 442
 443         if (shm.pending) {
 444             prev_image = shm.committed;
 445             shm.committed = shm.pending;
 446             shm.pending = nullptr;
 447
 448             dispatchFrameComplete = true;
 449         }
 450
 451         if (shm.committed)
 452             ret = shm.committed;
 453     }
 454
 455     if (prev_image)
 456         gst_buffer_unref(prev_image);
 457
 458     if (dispatchFrameComplete)
 459         frameComplete();
 460
 461     return ret;
 462 }
 463
 464 void WPEView::resize(int width, int height)
 465 {
 466     GST_DEBUG("resize to %dx%d", width, height);
 467     wpe.width = width;
 468     wpe.height = height;
 469
 470     s_view->dispatch([&]() {
 471         if (wpe.exportable && wpe_view_backend_exportable_fdo_get_view_backend(wpe.exportable))
 472           wpe_view_backend_dispatch_set_size(wpe_view_backend_exportable_fdo_get_view_backend(wpe.exportable), wpe.width, wpe.height);
 473     });
 474 }
 475
 476 void WPEView::frameComplete()
 477 {
 478     GST_TRACE("frame complete");
 479     s_view->dispatch([&]() {
 480         GST_TRACE("dispatching");
 481         wpe_view_backend_exportable_fdo_dispatch_frame_complete(wpe.exportable);
 482     });
 483 }
 484
 485 void WPEView::loadUriUnlocked(const gchar* uri)
 486 {
 487     if (webkit.uri)
 488         g_free(webkit.uri);
 489
 490     GST_DEBUG("loading %s", uri);
 491     webkit.uri = g_strdup(uri);
 492     webkit_web_view_load_uri(webkit.view, webkit.uri);
 493 }
 494
 495 void WPEView::loadUri(const gchar* uri)
 496 {
 497     s_view->dispatch([&]() {
 498         loadUriUnlocked(uri);
 499     });
 500 }
 501
 502 void WPEView::loadData(GBytes* bytes)
 503 {
 504     s_view->dispatch([this, bytes = g_bytes_ref(bytes)]() {
 505         webkit_web_view_load_bytes(webkit.view, bytes, nullptr, nullptr, nullptr);
 506         g_bytes_unref(bytes);
 507     });
 508 }
 509
 510 void WPEView::setDrawBackground(gboolean drawsBackground)
 511 {
 512 #if WEBKIT_CHECK_VERSION(2, 24, 0)
 513     GST_DEBUG("%s background rendering", drawsBackground ? "Enabling" : "Disabling");
 514     WebKitColor color;
 515     webkit_color_parse(&color, drawsBackground ? "white" : "transparent");
 516     webkit_web_view_set_background_color(webkit.view, &color);
 517 #else
 518     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());
 519 #endif
 520 }
 521
 522 void WPEView::releaseImage(gpointer imagePointer)
 523 {
 524     s_view->dispatch([&]() {
 525         GST_TRACE("Dispatch release exported image %p", imagePointer);
 526 #if USE_DEPRECATED_FDO_EGL_IMAGE
 527         wpe_view_backend_exportable_fdo_egl_dispatch_release_image(wpe.exportable,
 528                                                                    static_cast<EGLImageKHR>(imagePointer));
 529 #else
 530         wpe_view_backend_exportable_fdo_egl_dispatch_release_exported_image(wpe.exportable,
 531                                                                             static_cast<struct wpe_fdo_egl_exported_image*>(imagePointer));
 532 #endif
 533     });
 534 }
 535
 536 struct ImageContext {
 537     WPEView* view;
 538     gpointer image;
 539 };
 540
 541 void WPEView::handleExportedImage(gpointer image)
 542 {
 543     ImageContext* imageContext = g_slice_new(ImageContext);
 544     imageContext->view = this;
 545     imageContext->image = static_cast<gpointer>(image);
 546     EGLImageKHR eglImage;
 547 #if USE_DEPRECATED_FDO_EGL_IMAGE
 548     eglImage = static_cast<EGLImageKHR>(image);
 549 #else
 550     eglImage = wpe_fdo_egl_exported_image_get_egl_image(static_cast<struct wpe_fdo_egl_exported_image*>(image));
 551 #endif
 552
 553     auto* gstImage = gst_egl_image_new_wrapped(gst.context, eglImage, GST_GL_RGBA, imageContext, s_releaseImage);
 554     {
 555       GMutexHolder lock(images_mutex);
 556
 557       GST_TRACE("EGLImage %p wrapped in GstEGLImage %" GST_PTR_FORMAT, eglImage, gstImage);
 558       gst_clear_mini_object ((GstMiniObject **) &egl.pending);
 559       egl.pending = gstImage;
 560
 561       notifyLoadFinished();
 562     }
 563 }
 564
 565 #if ENABLE_SHM_BUFFER_SUPPORT
 566 struct SHMBufferContext {
 567     WPEView* view;
 568     struct wpe_fdo_shm_exported_buffer* buffer;
 569 };
 570
 571 void WPEView::releaseSHMBuffer(gpointer data)
 572 {
 573     SHMBufferContext* context = static_cast<SHMBufferContext*>(data);
 574     s_view->dispatch([&]() {
 575         auto* buffer = static_cast<struct wpe_fdo_shm_exported_buffer*>(context->buffer);
 576         GST_TRACE("Dispatch release exported buffer %p", buffer);
 577         wpe_view_backend_exportable_fdo_dispatch_release_shm_exported_buffer(wpe.exportable, buffer);
 578     });
 579 }
 580
 581 void WPEView::s_releaseSHMBuffer(gpointer data)
 582 {
 583     SHMBufferContext* context = static_cast<SHMBufferContext*>(data);
 584     context->view->releaseSHMBuffer(data);
 585     g_slice_free(SHMBufferContext, context);
 586 }
 587
 588 void WPEView::handleExportedBuffer(struct wpe_fdo_shm_exported_buffer* buffer)
 589 {
 590     struct wl_shm_buffer* shmBuffer = wpe_fdo_shm_exported_buffer_get_shm_buffer(buffer);
 591     auto format = wl_shm_buffer_get_format(shmBuffer);
 592     if (format != WL_SHM_FORMAT_ARGB8888 && format != WL_SHM_FORMAT_XRGB8888) {
 593         GST_ERROR("Unsupported pixel format: %d", format);
 594         return;
 595     }
 596
 597     int32_t width = wl_shm_buffer_get_width(shmBuffer);
 598     int32_t height = wl_shm_buffer_get_height(shmBuffer);
 599     gint stride = wl_shm_buffer_get_stride(shmBuffer);
 600     gsize size = width * height * 4;
 601     auto* data = static_cast<uint8_t*>(wl_shm_buffer_get_data(shmBuffer));
 602
 603     SHMBufferContext* bufferContext = g_slice_new(SHMBufferContext);
 604     bufferContext->view = this;
 605     bufferContext->buffer = buffer;
 606
 607     auto* gstBuffer = gst_buffer_new_wrapped_full(GST_MEMORY_FLAG_READONLY, data, size, 0, size, bufferContext, s_releaseSHMBuffer);
 608     gsize offsets[1];
 609     gint strides[1];
 610     offsets[0] = 0;
 611     strides[0] = stride;
 612     gst_buffer_add_video_meta_full(gstBuffer, GST_VIDEO_FRAME_FLAG_NONE, GST_VIDEO_FORMAT_BGRA, width, height, 1, offsets, strides);
 613
 614     {
 615         GMutexHolder lock(images_mutex);
 616         GST_TRACE("SHM buffer %p wrapped in buffer %" GST_PTR_FORMAT, buffer, gstBuffer);
 617         gst_clear_buffer (&shm.pending);
 618         shm.pending = gstBuffer;
 619         notifyLoadFinished();
 620     }
 621 }
 622 #endif
 623
 624 struct wpe_view_backend_exportable_fdo_egl_client WPEView::s_exportableEGLClient = {
 625 #if USE_DEPRECATED_FDO_EGL_IMAGE
 626     // export_egl_image
 627     [](void* data, EGLImageKHR image) {
 628         auto& view = *static_cast<WPEView*>(data);
 629         view.handleExportedImage(static_cast<gpointer>(image));
 630     },
 631     nullptr, nullptr,
 632 #else
 633     // export_egl_image
 634     nullptr,
 635     [](void* data, struct wpe_fdo_egl_exported_image* image) {
 636         auto& view = *static_cast<WPEView*>(data);
 637         view.handleExportedImage(static_cast<gpointer>(image));
 638     },
 639     nullptr,
 640 #endif // USE_DEPRECATED_FDO_EGL_IMAGE
 641     // padding
 642     nullptr, nullptr
 643 };
 644
 645 #if ENABLE_SHM_BUFFER_SUPPORT
 646 struct wpe_view_backend_exportable_fdo_client WPEView::s_exportableClient = {
 647     nullptr,
 648     nullptr,
 649     // export_shm_buffer
 650     [](void* data, struct wpe_fdo_shm_exported_buffer* buffer) {
 651         auto& view = *static_cast<WPEView*>(data);
 652         view.handleExportedBuffer(buffer);
 653     },
 654     nullptr,
 655     nullptr,
 656 };
 657 #endif
 658
 659 void WPEView::s_releaseImage(GstEGLImage* image, gpointer data)
 660 {
 661     ImageContext* context = static_cast<ImageContext*>(data);
 662     context->view->releaseImage(context->image);
 663     g_slice_free(ImageContext, context);
 664 }
 665
 666 struct wpe_view_backend* WPEView::backend() const
 667 {
 668     return wpe.exportable ? wpe_view_backend_exportable_fdo_get_view_backend(wpe.exportable) : nullptr;
 669 }
 670
 671 void WPEView::dispatchKeyboardEvent(struct wpe_input_keyboard_event& wpe_event)
 672 {
 673     s_view->dispatch([&]() {
 674         wpe_view_backend_dispatch_keyboard_event(backend(), &wpe_event);
 675     });
 676 }
 677
 678 void WPEView::dispatchPointerEvent(struct wpe_input_pointer_event& wpe_event)
 679 {
 680     s_view->dispatch([&]() {
 681         wpe_view_backend_dispatch_pointer_event(backend(), &wpe_event);
 682     });
 683 }
 684
 685 void WPEView::dispatchAxisEvent(struct wpe_input_axis_event& wpe_event)
 686 {
 687     s_view->dispatch([&]() {
 688         wpe_view_backend_dispatch_axis_event(backend(), &wpe_event);
 689     });
 690 }