1 /* Copyright (C) <2018> Philippe Normand <philn@igalia.com>
2 * Copyright (C) <2018> Žan Doberšek <zdobersek@igalia.com>
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.
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.
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.
21 * SECTION:element-wpevideosrc
24 * The wpevideosrc element is used to produce a video texture representing a web page
25 * rendered off-screen by WPE.
27 * Starting from WPEBackend-FDO 1.6.x, software rendering support is available. This
28 * features allows wpevideosrc to be used on machines without GPU, and/or for testing
29 * purpose. To enable it, set the `LIBGL_ALWAYS_SOFTWARE=true` environment
30 * variable and make sure `video/x-raw, format=BGRA` caps are negotiated by the
31 * wpevideosrc element.
33 * As the webview loading is usually not instantaneous, the wpevideosrc element emits
34 * messages indicating the load progress, in percent. The value is an estimate
35 * based on the total number of bytes expected to be received for a document,
36 * including all its possible subresources and child documents. The application
37 * can handle these `element` messages synchronously for instance, in order to
38 * display a progress bar or other visual load indicator. The load percent value
39 * is stored in the message structure as a double value named
40 * `estimated-load-progress` and the structure name is `wpe-stats`.
42 * ## Example launch lines
45 * gst-launch-1.0 -v wpevideosrc location="https://gstreamer.freedesktop.org" ! queue ! glimagesink
47 * Shows the GStreamer website homepage
50 * LIBGL_ALWAYS_SOFTWARE=true gst-launch-1.0 -v wpevideosrc num-buffers=50 location="https://gstreamer.freedesktop.org" \
51 * videoconvert ! pngenc ! multifilesink location=/tmp/snapshot-%05d.png
53 * Saves the first 50 video frames generated for the GStreamer website as PNG files in /tmp.
56 * gst-play-1.0 --videosink gtkglsink wpe://https://gstreamer.freedesktop.org
58 * Shows the GStreamer website homepage as played with GstPlayer in a GTK+ window.
61 * gst-launch-1.0 glvideomixer name=m sink_1::zorder=0 ! glimagesink wpevideosrc location="file:///tmp/asset.html" draw-background=0 \
62 * ! m. videotestsrc ! queue ! glupload ! glcolorconvert ! m.
64 * Composite WPE with a video stream in a single OpenGL scene.
67 * gst-launch-1.0 glvideomixer name=m sink_1::zorder=0 sink_0::height=818 sink_0::width=1920 ! gtkglsink \
68 * wpevideosrc location="file:///tmp/asset.html" draw-background=0 ! m.
69 * uridecodebin uri="http://example.com/Sintel.2010.1080p.mkv" name=d d. ! queue ! glupload ! glcolorconvert ! m.
71 * Composite WPE with a video stream, sink_0 pad properties have to match the video dimensions.
78 * - DMABuf support (requires changes in WPEBackend-fdo to expose DMABuf planes and fds)
79 * - Custom EGLMemory allocator
80 * - Better navigation events handling (would require a new GstNavigation API)
87 #include "gstwpevideosrc.h"
88 #include <gst/gl/gl.h>
89 #include <gst/gl/egl/gstglmemoryegl.h>
90 #include <gst/gl/wayland/gstgldisplay_wayland.h>
91 #include <gst/video/video.h>
92 #include <xkbcommon/xkbcommon.h>
94 #include "WPEThreadedView.h"
96 #define DEFAULT_WIDTH 1920
97 #define DEFAULT_HEIGHT 1080
98 #define DEFAULT_FPS_N 30
99 #define DEFAULT_FPS_D 1
100 #define DEFAULT_DRAW_BACKGROUND TRUE
111 SIGNAL_CONFIGURE_WEB_VIEW,
115 static guint gst_wpe_video_src_signals[LAST_SIGNAL] = { 0 };
117 struct _GstWpeVideoSrc
123 gboolean draw_background;
128 gint64 n_frames; /* total frames sent */
135 #define WPE_LOCK(o) g_mutex_lock(&(o)->lock)
136 #define WPE_UNLOCK(o) g_mutex_unlock(&(o)->lock)
138 GST_DEBUG_CATEGORY_EXTERN (wpe_video_src_debug);
139 #define GST_CAT_DEFAULT wpe_video_src_debug
141 #define gst_wpe_video_src_parent_class parent_class
142 G_DEFINE_TYPE (GstWpeVideoSrc, gst_wpe_video_src, GST_TYPE_GL_BASE_SRC);
144 #define WPE_RAW_CAPS "video/x-raw, " \
145 "format = (string) BGRA, " \
146 "width = " GST_VIDEO_SIZE_RANGE ", " \
147 "height = " GST_VIDEO_SIZE_RANGE ", " \
148 "framerate = " GST_VIDEO_FPS_RANGE ", " \
149 "pixel-aspect-ratio = (fraction)1/1"
151 #define WPE_GL_CAPS "video/x-raw(memory:GLMemory), " \
152 "format = (string) RGBA, " \
153 "width = " GST_VIDEO_SIZE_RANGE ", " \
154 "height = " GST_VIDEO_SIZE_RANGE ", " \
155 "framerate = " GST_VIDEO_FPS_RANGE ", " \
156 "pixel-aspect-ratio = (fraction)1/1, texture-target = (string)2D"
158 #define WPE_VIDEO_SRC_CAPS WPE_GL_CAPS "; " WPE_RAW_CAPS
159 #define WPE_VIDEO_SRC_DOC_CAPS WPE_GL_CAPS "; video/x-raw, format = (string) BGRA"
161 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
164 GST_STATIC_CAPS (WPE_VIDEO_SRC_CAPS));
167 gst_wpe_video_src_create (GstBaseSrc * bsrc, guint64 offset, guint length,
170 GstGLBaseSrc *gl_src = GST_GL_BASE_SRC (bsrc);
171 GstWpeVideoSrc *src = GST_WPE_VIDEO_SRC (bsrc);
172 GstFlowReturn ret = GST_FLOW_ERROR;
173 GstBuffer *locked_buffer;
174 GstClockTime next_time;
175 gint64 ts_offset = 0;
178 if (src->gl_enabled) {
180 return GST_CALL_PARENT_WITH_DEFAULT (GST_BASE_SRC_CLASS, create, (bsrc,
181 offset, length, buf), ret);
184 locked_buffer = src->view->buffer ();
185 if (locked_buffer == NULL) {
187 GST_ELEMENT_ERROR (src, RESOURCE, FAILED,
188 ("WPE View did not render a buffer"), (NULL));
191 *buf = gst_buffer_copy_deep (locked_buffer);
193 g_object_get (gl_src, "timestamp-offset", &ts_offset, NULL);
195 /* The following code mimics the behaviour of GLBaseSrc::fill */
196 GST_BUFFER_TIMESTAMP (*buf) = ts_offset + gl_src->running_time;
197 GST_BUFFER_OFFSET (*buf) = src->n_frames;
199 GST_BUFFER_OFFSET_END (*buf) = src->n_frames;
200 if (gl_src->out_info.fps_n) {
201 next_time = gst_util_uint64_scale_int (src->n_frames * GST_SECOND,
202 gl_src->out_info.fps_d, gl_src->out_info.fps_n);
203 GST_BUFFER_DURATION (*buf) = next_time - gl_src->running_time;
205 next_time = ts_offset;
206 GST_BUFFER_DURATION (*buf) = GST_CLOCK_TIME_NONE;
209 GST_LOG_OBJECT (src, "Created buffer from SHM %" GST_PTR_FORMAT, *buf);
211 gl_src->running_time = next_time;
219 _egl_image_quark (void)
221 static GQuark quark = 0;
224 quark = g_quark_from_static_string ("GstWPEEGLImage");
229 gst_wpe_video_src_fill_memory (GstGLBaseSrc * bsrc, GstGLMemory * memory)
231 GstWpeVideoSrc *src = GST_WPE_VIDEO_SRC (bsrc);
232 const GstGLFuncs *gl;
234 GstEGLImage *locked_image;
236 if (!gst_gl_context_check_feature (GST_GL_CONTEXT (bsrc->context),
237 "EGL_KHR_image_base")) {
238 GST_ERROR_OBJECT (src, "EGL_KHR_image_base is not supported");
244 gl = bsrc->context->gl_vtable;
245 tex_id = gst_gl_memory_get_texture_id (memory);
246 locked_image = src->view->image ();
253 // The EGLImage is implicitely associated with the memory we're filling, so we
254 // need to ensure their life cycles are tied.
255 gst_mini_object_set_qdata (GST_MINI_OBJECT_CAST (memory), _egl_image_quark (),
256 gst_egl_image_ref (locked_image), (GDestroyNotify) gst_egl_image_unref);
258 gl->ActiveTexture (GL_TEXTURE0 + memory->plane);
259 gl->BindTexture (GL_TEXTURE_2D, tex_id);
260 gl->EGLImageTargetTexture2D (GL_TEXTURE_2D,
261 gst_egl_image_get_image (locked_image));
268 gst_wpe_video_src_start (GstWpeVideoSrc * src)
270 GstGLContext *context = NULL;
271 GstGLDisplay *display = NULL;
272 GstGLBaseSrc *base_src = GST_GL_BASE_SRC (src);
273 gboolean created_view = FALSE;
276 GST_INFO_OBJECT (src, "Starting up");
279 if (src->gl_enabled) {
280 context = base_src->context;
281 display = base_src->display;
284 GST_DEBUG_OBJECT (src, "Will %sfill GLMemories",
285 src->gl_enabled ? "" : "NOT ");
287 auto & thread = WPEContextThread::singleton ();
290 src->view = thread.createWPEView (src, context, display,
291 GST_VIDEO_INFO_WIDTH (&base_src->out_info),
292 GST_VIDEO_INFO_HEIGHT (&base_src->out_info));
294 GST_DEBUG_OBJECT (src, "created view %p", src->view);
299 GST_ELEMENT_ERROR (src, RESOURCE, FAILED,
300 ("WPEBackend-FDO EGL display initialisation failed"), (NULL));
304 GST_OBJECT_LOCK (src);
307 GST_OBJECT_UNLOCK (src);
310 src->view->loadData (bytes);
311 g_bytes_unref (bytes);
322 gst_wpe_video_src_decide_allocation (GstBaseSrc * base_src, GstQuery * query)
324 GstGLBaseSrc *gl_src = GST_GL_BASE_SRC (base_src);
325 GstWpeVideoSrc *src = GST_WPE_VIDEO_SRC (base_src);
326 GstCapsFeatures *caps_features;
329 caps_features = gst_caps_get_features (gl_src->out_caps, 0);
330 if (caps_features != NULL
331 && gst_caps_features_contains (caps_features,
332 GST_CAPS_FEATURE_MEMORY_GL_MEMORY)) {
333 src->gl_enabled = TRUE;
335 src->gl_enabled = FALSE;
338 if (src->gl_enabled) {
340 return GST_CALL_PARENT_WITH_DEFAULT (GST_BASE_SRC_CLASS, decide_allocation,
341 (base_src, query), FALSE);
344 return gst_wpe_video_src_start (src);
348 gst_wpe_video_src_gl_start (GstGLBaseSrc * base_src)
350 GstWpeVideoSrc *src = GST_WPE_VIDEO_SRC (base_src);
351 return gst_wpe_video_src_start (src);
355 gst_wpe_video_src_stop_unlocked (GstWpeVideoSrc * src)
358 GST_DEBUG_OBJECT (src, "deleting view %p", src->view);
365 gst_wpe_video_src_gl_stop (GstGLBaseSrc * base_src)
367 GstWpeVideoSrc *src = GST_WPE_VIDEO_SRC (base_src);
370 gst_wpe_video_src_stop_unlocked (src);
375 gst_wpe_video_src_stop (GstBaseSrc * base_src)
377 GstWpeVideoSrc *src = GST_WPE_VIDEO_SRC (base_src);
379 /* we can call this always, GstGLBaseSrc is smart enough to not crash if
380 * gst_gl_base_src_gl_start() has not been called from chaining up
381 * gst_wpe_video_src_decide_allocation() */
382 if (!GST_CALL_PARENT_WITH_DEFAULT (GST_BASE_SRC_CLASS, stop, (base_src),
388 /* if gl-enabled, gst_wpe_video_src_stop_unlocked() would have already been called
389 * inside gst_wpe_video_src_gl_stop() from the base class stopping the OpenGL
391 if (!src->gl_enabled)
392 gst_wpe_video_src_stop_unlocked (src);
399 gst_wpe_video_src_fixate (GstBaseSrc * base_src, GstCaps * combined_caps)
401 GstWpeVideoSrc *src = GST_WPE_VIDEO_SRC (base_src);
402 GstStructure *structure;
406 /* In situation where software GL support is explicitly requested, select raw
407 * caps, otherwise perform default caps negotiation. Unfortunately at this
408 * point we don't know yet if a GL context will be usable or not, so we can't
409 * check the element GstContext.
411 if (!g_strcmp0 (g_getenv ("LIBGL_ALWAYS_SOFTWARE"), "true")) {
412 caps = gst_caps_from_string (WPE_RAW_CAPS);
414 caps = gst_caps_make_writable (combined_caps);
417 structure = gst_caps_get_structure (caps, 0);
419 gst_structure_fixate_field_nearest_int (structure, "width", DEFAULT_WIDTH);
420 gst_structure_fixate_field_nearest_int (structure, "height", DEFAULT_HEIGHT);
422 if (gst_structure_has_field (structure, "framerate"))
423 gst_structure_fixate_field_nearest_fraction (structure, "framerate",
424 DEFAULT_FPS_N, DEFAULT_FPS_D);
426 gst_structure_set (structure, "framerate", GST_TYPE_FRACTION, DEFAULT_FPS_N,
427 DEFAULT_FPS_D, NULL);
429 caps = GST_BASE_SRC_CLASS (parent_class)->fixate (base_src, caps);
430 GST_INFO_OBJECT (base_src, "Fixated caps to %" GST_PTR_FORMAT, caps);
433 gst_structure_get (structure, "width", G_TYPE_INT, &width, "height",
434 G_TYPE_INT, &height, NULL);
435 src->view->resize (width, height);
441 gst_wpe_video_src_configure_web_view (GstWpeVideoSrc * src,
442 WebKitWebView * webview)
444 GValue args[2] = { {0}, {0} };
446 g_value_init (&args[0], GST_TYPE_ELEMENT);
447 g_value_set_object (&args[0], src);
448 g_value_init (&args[1], G_TYPE_OBJECT);
449 g_value_set_object (&args[1], webview);
451 g_signal_emitv (args, gst_wpe_video_src_signals[SIGNAL_CONFIGURE_WEB_VIEW], 0,
454 g_value_unset (&args[0]);
455 g_value_unset (&args[1]);
459 gst_wpe_video_src_load_bytes (GstWpeVideoSrc * src, GBytes * bytes)
461 if (src->view && GST_STATE (GST_ELEMENT_CAST (src)) > GST_STATE_NULL) {
462 src->view->loadData (bytes);
464 GST_OBJECT_LOCK (src);
466 g_bytes_unref (src->bytes);
467 src->bytes = g_bytes_ref (bytes);
468 GST_OBJECT_UNLOCK (src);
473 gst_wpe_video_src_set_location (GstWpeVideoSrc * src, const gchar * location,
476 GST_OBJECT_LOCK (src);
477 g_free (src->location);
478 src->location = g_strdup (location);
479 GST_OBJECT_UNLOCK (src);
482 src->view->loadUri (location);
488 gst_wpe_video_src_set_draw_background (GstWpeVideoSrc * src,
489 gboolean draw_background)
491 GST_OBJECT_LOCK (src);
492 src->draw_background = draw_background;
493 GST_OBJECT_UNLOCK (src);
496 src->view->setDrawBackground (draw_background);
500 gst_wpe_video_src_set_property (GObject * object, guint prop_id,
501 const GValue * value, GParamSpec * pspec)
503 GstWpeVideoSrc *src = GST_WPE_VIDEO_SRC (object);
508 const gchar *location;
510 location = g_value_get_string (value);
511 if (location == NULL) {
512 GST_WARNING_OBJECT (src, "location property cannot be NULL");
516 if (!gst_wpe_video_src_set_location (src, location, NULL)) {
517 GST_WARNING_OBJECT (src, "badly formatted location");
522 case PROP_DRAW_BACKGROUND:
523 gst_wpe_video_src_set_draw_background (src, g_value_get_boolean (value));
531 gst_wpe_video_src_get_property (GObject * object, guint prop_id, GValue * value,
534 GstWpeVideoSrc *src = GST_WPE_VIDEO_SRC (object);
538 GST_OBJECT_LOCK (src);
539 g_value_set_string (value, src->location);
540 GST_OBJECT_UNLOCK (src);
542 case PROP_DRAW_BACKGROUND:
543 GST_OBJECT_LOCK (src);
544 g_value_set_boolean (value, src->draw_background);
545 GST_OBJECT_UNLOCK (src);
548 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
554 gst_wpe_video_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
556 gboolean ret = FALSE;
557 GstWpeVideoSrc *src = GST_WPE_VIDEO_SRC (parent);
559 if (GST_EVENT_TYPE (event) == GST_EVENT_NAVIGATION) {
562 gdouble x, y, delta_x, delta_y;
564 GST_DEBUG_OBJECT (src, "Processing event %" GST_PTR_FORMAT, event);
568 switch (gst_navigation_event_get_type (event)) {
569 case GST_NAVIGATION_EVENT_KEY_PRESS:
570 case GST_NAVIGATION_EVENT_KEY_RELEASE:
571 if (gst_navigation_event_parse_key_event (event, &key)) {
572 /* FIXME: This is wrong... The GstNavigation API should pass
573 hardware-level information, not high-level keysym strings */
575 (uint32_t) xkb_keysym_from_name (key, XKB_KEYSYM_NO_FLAGS);
576 struct wpe_input_keyboard_event wpe_event;
577 wpe_event.key_code = keysym;
579 gst_navigation_event_get_type (event) ==
580 GST_NAVIGATION_EVENT_KEY_PRESS;
581 src->view->dispatchKeyboardEvent (wpe_event);
585 case GST_NAVIGATION_EVENT_MOUSE_BUTTON_PRESS:
586 case GST_NAVIGATION_EVENT_MOUSE_BUTTON_RELEASE:
587 if (gst_navigation_event_parse_mouse_button_event (event, &button, &x,
589 struct wpe_input_pointer_event wpe_event;
590 wpe_event.time = GST_TIME_AS_MSECONDS (GST_EVENT_TIMESTAMP (event));
591 wpe_event.type = wpe_input_pointer_event_type_button;
592 wpe_event.x = (int) x;
593 wpe_event.y = (int) y;
595 wpe_event.modifiers = wpe_input_pointer_modifier_button1;
596 } else if (button == 2) {
597 wpe_event.modifiers = wpe_input_pointer_modifier_button2;
598 } else if (button == 3) {
599 wpe_event.modifiers = wpe_input_pointer_modifier_button3;
600 } else if (button == 4) {
601 wpe_event.modifiers = wpe_input_pointer_modifier_button4;
602 } else if (button == 5) {
603 wpe_event.modifiers = wpe_input_pointer_modifier_button5;
605 wpe_event.button = button;
607 gst_navigation_event_get_type (event) ==
608 GST_NAVIGATION_EVENT_MOUSE_BUTTON_PRESS;
609 src->view->dispatchPointerEvent (wpe_event);
613 case GST_NAVIGATION_EVENT_MOUSE_MOVE:
614 if (gst_navigation_event_parse_mouse_move_event (event, &x, &y)) {
615 struct wpe_input_pointer_event wpe_event;
616 wpe_event.time = GST_TIME_AS_MSECONDS (GST_EVENT_TIMESTAMP (event));
617 wpe_event.type = wpe_input_pointer_event_type_motion;
618 wpe_event.x = (int) x;
619 wpe_event.y = (int) y;
620 src->view->dispatchPointerEvent (wpe_event);
624 case GST_NAVIGATION_EVENT_MOUSE_SCROLL:
625 if (gst_navigation_event_parse_mouse_scroll_event (event, &x, &y,
626 &delta_x, &delta_y)) {
627 struct wpe_input_axis_event wpe_event;
630 wpe_event.value = delta_x;
633 wpe_event.value = delta_y;
635 wpe_event.time = GST_TIME_AS_MSECONDS (GST_EVENT_TIMESTAMP (event));
636 wpe_event.type = wpe_input_axis_event_type_motion;
637 wpe_event.x = (int) x;
638 wpe_event.y = (int) y;
639 src->view->dispatchAxisEvent (wpe_event);
646 /* FIXME: No touch events handling support in GstNavigation */
650 ret = gst_pad_event_default (pad, parent, event);
652 gst_event_unref (event);
658 gst_wpe_video_src_init (GstWpeVideoSrc * src)
660 GstPad *pad = gst_element_get_static_pad (GST_ELEMENT_CAST (src), "src");
662 gst_pad_set_event_function (pad, gst_wpe_video_src_event);
663 gst_object_unref (pad);
665 src->draw_background = DEFAULT_DRAW_BACKGROUND;
667 gst_base_src_set_live (GST_BASE_SRC_CAST (src), TRUE);
669 g_mutex_init (&src->lock);
673 gst_wpe_video_src_finalize (GObject * object)
675 GstWpeVideoSrc *src = GST_WPE_VIDEO_SRC (object);
677 g_free (src->location);
678 g_clear_pointer (&src->bytes, g_bytes_unref);
679 g_mutex_clear (&src->lock);
681 G_OBJECT_CLASS (parent_class)->finalize (object);
685 gst_wpe_video_src_class_init (GstWpeVideoSrcClass * klass)
687 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
688 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
689 GstGLBaseSrcClass *gl_base_src_class = GST_GL_BASE_SRC_CLASS (klass);
690 GstBaseSrcClass *base_src_class = GST_BASE_SRC_CLASS (klass);
691 GstPadTemplate *tmpl;
694 gobject_class->set_property = gst_wpe_video_src_set_property;
695 gobject_class->get_property = gst_wpe_video_src_get_property;
696 gobject_class->finalize = gst_wpe_video_src_finalize;
698 g_object_class_install_property (gobject_class, PROP_LOCATION,
699 g_param_spec_string ("location", "location",
700 "The URL to display",
701 "", (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
702 g_object_class_install_property (gobject_class, PROP_DRAW_BACKGROUND,
703 g_param_spec_boolean ("draw-background", "Draws the background",
704 "Whether to draw the WebView background", DEFAULT_DRAW_BACKGROUND,
705 (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
707 gst_element_class_set_static_metadata (gstelement_class,
708 "WPE source", "Source/Video",
709 "Creates a video stream from a WPE browser",
710 "Philippe Normand <philn@igalia.com>, Žan Doberšek <zdobersek@igalia.com>");
712 tmpl = gst_static_pad_template_get (&src_factory);
713 gst_element_class_add_pad_template (gstelement_class, tmpl);
715 base_src_class->fixate = GST_DEBUG_FUNCPTR (gst_wpe_video_src_fixate);
716 base_src_class->create = GST_DEBUG_FUNCPTR (gst_wpe_video_src_create);
717 base_src_class->decide_allocation =
718 GST_DEBUG_FUNCPTR (gst_wpe_video_src_decide_allocation);
719 base_src_class->stop = GST_DEBUG_FUNCPTR (gst_wpe_video_src_stop);
721 gl_base_src_class->supported_gl_api =
722 static_cast < GstGLAPI >
723 (GST_GL_API_OPENGL | GST_GL_API_OPENGL3 | GST_GL_API_GLES2);
724 gl_base_src_class->gl_start = GST_DEBUG_FUNCPTR (gst_wpe_video_src_gl_start);
725 gl_base_src_class->gl_stop = GST_DEBUG_FUNCPTR (gst_wpe_video_src_gl_stop);
726 gl_base_src_class->fill_gl_memory =
727 GST_DEBUG_FUNCPTR (gst_wpe_video_src_fill_memory);
729 doc_caps = gst_caps_from_string (WPE_VIDEO_SRC_DOC_CAPS);
730 gst_pad_template_set_documentation_caps (tmpl, doc_caps);
731 gst_clear_caps (&doc_caps);
734 * GstWpeVideoSrc::configure-web-view:
735 * @src: the object which received the signal
736 * @webview: the webView
738 * Allow application to configure the webView settings.
740 gst_wpe_video_src_signals[SIGNAL_CONFIGURE_WEB_VIEW] =
741 g_signal_new ("configure-web-view", G_TYPE_FROM_CLASS (klass),
742 G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_NONE, 1, G_TYPE_OBJECT);
745 * GstWpeVideoSrc::load-bytes:
746 * @src: the object which received the signal
747 * @bytes: the GBytes data to load
749 * Load the specified bytes into the internal webView.
751 gst_wpe_video_src_signals[SIGNAL_LOAD_BYTES] =
752 g_signal_new_class_handler ("load-bytes", G_TYPE_FROM_CLASS (klass),
753 static_cast < GSignalFlags > (G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION),
754 G_CALLBACK (gst_wpe_video_src_load_bytes), NULL, NULL, NULL,
755 G_TYPE_NONE, 1, G_TYPE_BYTES);