1 /* GStreamer Wayland video sink
3 * Copyright (C) 2011 Intel Corporation
4 * Copyright (C) 2011 Sreerenj Balachandran <sreerenj.balachandran@intel.com>
5 * Copyright (C) 2012 Wim Taymans <wim.taymans@gmail.com>
6 * Copyright (C) 2014 Collabora Ltd.
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
18 * You should have received a copy of the GNU Library General Public
19 * License along with this library; if not, write to the Free
20 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 * Boston, MA 02110-1301 USA.
25 * SECTION:element-waylandsink
27 * The waylandsink is creating its own window and render the decoded video frames to that.
28 * Setup the Wayland environment as described in
29 * <ulink url="http://wayland.freedesktop.org/building.html">Wayland</ulink> home page.
30 * The current implementaion is based on weston compositor.
33 * <title>Example pipelines</title>
35 * gst-launch -v videotestsrc ! waylandsink
36 * ]| test the video rendering in wayland
44 #include "gstwaylandsink.h"
45 #include "wlvideoformat.h"
46 #include "waylandpool.h"
48 #include <gst/wayland/wayland.h>
49 #include <gst/video/videooverlay.h>
65 GST_DEBUG_CATEGORY (gstwayland_debug);
66 #define GST_CAT_DEFAULT gstwayland_debug
68 static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
71 GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE
72 ("{ BGRx, BGRA, RGBx, xBGR, xRGB, RGBA, ABGR, ARGB, RGB, BGR, "
73 "RGB16, BGR16, YUY2, YVYU, UYVY, AYUV, NV12, NV21, NV16, "
74 "YUV9, YVU9, Y41B, I420, YV12, Y42B, v308 }"))
77 static void gst_wayland_sink_get_property (GObject * object,
78 guint prop_id, GValue * value, GParamSpec * pspec);
79 static void gst_wayland_sink_set_property (GObject * object,
80 guint prop_id, const GValue * value, GParamSpec * pspec);
81 static void gst_wayland_sink_finalize (GObject * object);
83 static GstStateChangeReturn gst_wayland_sink_change_state (GstElement * element,
84 GstStateChange transition);
85 static void gst_wayland_sink_set_context (GstElement * element,
86 GstContext * context);
88 static GstCaps *gst_wayland_sink_get_caps (GstBaseSink * bsink,
90 static gboolean gst_wayland_sink_set_caps (GstBaseSink * bsink, GstCaps * caps);
91 static gboolean gst_wayland_sink_preroll (GstBaseSink * bsink,
94 gst_wayland_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query);
95 static gboolean gst_wayland_sink_render (GstBaseSink * bsink,
98 /* VideoOverlay interface */
99 static void gst_wayland_sink_videooverlay_init (GstVideoOverlayInterface *
101 static void gst_wayland_sink_set_window_handle (GstVideoOverlay * overlay,
103 static void gst_wayland_sink_set_render_rectangle (GstVideoOverlay * overlay,
104 gint x, gint y, gint w, gint h);
105 static void gst_wayland_sink_expose (GstVideoOverlay * overlay);
107 /* WaylandVideo interface */
108 static void gst_wayland_sink_waylandvideo_init (GstWaylandVideoInterface *
110 static void gst_wayland_sink_pause_rendering (GstWaylandVideo * video);
111 static void gst_wayland_sink_resume_rendering (GstWaylandVideo * video);
113 #define gst_wayland_sink_parent_class parent_class
114 G_DEFINE_TYPE_WITH_CODE (GstWaylandSink, gst_wayland_sink, GST_TYPE_VIDEO_SINK,
115 G_IMPLEMENT_INTERFACE (GST_TYPE_VIDEO_OVERLAY,
116 gst_wayland_sink_videooverlay_init)
117 G_IMPLEMENT_INTERFACE (GST_TYPE_WAYLAND_VIDEO,
118 gst_wayland_sink_waylandvideo_init));
121 gst_wayland_sink_class_init (GstWaylandSinkClass * klass)
123 GObjectClass *gobject_class;
124 GstElementClass *gstelement_class;
125 GstBaseSinkClass *gstbasesink_class;
127 gobject_class = (GObjectClass *) klass;
128 gstelement_class = (GstElementClass *) klass;
129 gstbasesink_class = (GstBaseSinkClass *) klass;
131 gobject_class->set_property = gst_wayland_sink_set_property;
132 gobject_class->get_property = gst_wayland_sink_get_property;
133 gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_wayland_sink_finalize);
135 gst_element_class_add_pad_template (gstelement_class,
136 gst_static_pad_template_get (&sink_template));
138 gst_element_class_set_static_metadata (gstelement_class,
139 "wayland video sink", "Sink/Video",
140 "Output to wayland surface",
141 "Sreerenj Balachandran <sreerenj.balachandran@intel.com>, "
142 "George Kiagiadakis <george.kiagiadakis@collabora.com>");
144 gstelement_class->change_state =
145 GST_DEBUG_FUNCPTR (gst_wayland_sink_change_state);
146 gstelement_class->set_context =
147 GST_DEBUG_FUNCPTR (gst_wayland_sink_set_context);
149 gstbasesink_class->get_caps = GST_DEBUG_FUNCPTR (gst_wayland_sink_get_caps);
150 gstbasesink_class->set_caps = GST_DEBUG_FUNCPTR (gst_wayland_sink_set_caps);
151 gstbasesink_class->preroll = GST_DEBUG_FUNCPTR (gst_wayland_sink_preroll);
152 gstbasesink_class->propose_allocation =
153 GST_DEBUG_FUNCPTR (gst_wayland_sink_propose_allocation);
154 gstbasesink_class->render = GST_DEBUG_FUNCPTR (gst_wayland_sink_render);
156 g_object_class_install_property (gobject_class, PROP_DISPLAY,
157 g_param_spec_string ("display", "Wayland Display name", "Wayland "
158 "display name to connect to, if not supplied via the GstContext",
159 NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
163 gst_wayland_sink_init (GstWaylandSink * sink)
165 g_mutex_init (&sink->display_lock);
166 g_mutex_init (&sink->render_lock);
167 g_cond_init (&sink->render_cond);
171 gst_wayland_sink_get_property (GObject * object,
172 guint prop_id, GValue * value, GParamSpec * pspec)
174 GstWaylandSink *sink = GST_WAYLAND_SINK (object);
178 GST_OBJECT_LOCK (sink);
179 g_value_set_string (value, sink->display_name);
180 GST_OBJECT_UNLOCK (sink);
183 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
189 gst_wayland_sink_set_property (GObject * object,
190 guint prop_id, const GValue * value, GParamSpec * pspec)
192 GstWaylandSink *sink = GST_WAYLAND_SINK (object);
196 GST_OBJECT_LOCK (sink);
197 sink->display_name = g_value_dup_string (value);
198 GST_OBJECT_UNLOCK (sink);
201 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
207 gst_wayland_sink_finalize (GObject * object)
209 GstWaylandSink *sink = GST_WAYLAND_SINK (object);
211 GST_DEBUG_OBJECT (sink, "Finalizing the sink..");
213 if (sink->last_buffer)
214 gst_buffer_unref (sink->last_buffer);
216 /* see comment about this call in gst_wayland_sink_change_state() */
218 gst_wayland_compositor_release_all_buffers (GST_WAYLAND_BUFFER_POOL
221 g_object_unref (sink->display);
224 g_object_unref (sink->window);
226 gst_object_unref (sink->pool);
228 if (sink->display_name)
229 g_free (sink->display_name);
231 g_mutex_clear (&sink->display_lock);
232 g_mutex_clear (&sink->render_lock);
233 g_cond_clear (&sink->render_cond);
235 G_OBJECT_CLASS (parent_class)->finalize (object);
238 /* must be called with the display_lock */
240 gst_wayland_sink_set_display_from_context (GstWaylandSink * sink,
241 GstContext * context)
243 struct wl_display *display;
244 GError *error = NULL;
246 display = gst_wayland_display_handle_context_get_handle (context);
247 sink->display = gst_wl_display_new_existing (display, FALSE, &error);
250 GST_ELEMENT_WARNING (sink, RESOURCE, OPEN_READ_WRITE,
251 ("Could not set display handle"),
252 ("Failed to use the external wayland display: '%s'", error->message));
253 g_error_free (error);
258 gst_wayland_sink_find_display (GstWaylandSink * sink)
262 GstContext *context = NULL;
263 GError *error = NULL;
266 g_mutex_lock (&sink->display_lock);
268 if (!sink->display) {
269 /* first query upstream for the needed display handle */
270 query = gst_query_new_context (GST_WAYLAND_DISPLAY_HANDLE_CONTEXT_TYPE);
271 if (gst_pad_peer_query (GST_VIDEO_SINK_PAD (sink), query)) {
272 gst_query_parse_context (query, &context);
273 gst_wayland_sink_set_display_from_context (sink, context);
275 gst_query_unref (query);
277 if (G_LIKELY (!sink->display)) {
278 /* now ask the application to set the display handle */
279 msg = gst_message_new_need_context (GST_OBJECT_CAST (sink),
280 GST_WAYLAND_DISPLAY_HANDLE_CONTEXT_TYPE);
282 g_mutex_unlock (&sink->display_lock);
283 gst_element_post_message (GST_ELEMENT_CAST (sink), msg);
284 /* at this point we expect gst_wayland_sink_set_context
285 * to get called and fill sink->display */
286 g_mutex_lock (&sink->display_lock);
288 if (!sink->display) {
289 /* if the application didn't set a display, let's create it ourselves */
290 GST_OBJECT_LOCK (sink);
291 sink->display = gst_wl_display_new (sink->display_name, &error);
292 GST_OBJECT_UNLOCK (sink);
295 GST_ELEMENT_WARNING (sink, RESOURCE, OPEN_READ_WRITE,
296 ("Could not initialise Wayland output"),
297 ("Failed to create GstWlDisplay: '%s'", error->message));
298 g_error_free (error);
301 /* inform the world about the new display */
303 gst_wayland_display_handle_context_new (sink->display->display);
304 msg = gst_message_new_have_context (GST_OBJECT_CAST (sink), context);
305 gst_element_post_message (GST_ELEMENT_CAST (sink), msg);
311 g_mutex_unlock (&sink->display_lock);
316 static GstStateChangeReturn
317 gst_wayland_sink_change_state (GstElement * element, GstStateChange transition)
319 GstWaylandSink *sink = GST_WAYLAND_SINK (element);
320 GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
322 switch (transition) {
323 case GST_STATE_CHANGE_NULL_TO_READY:
324 if (!gst_wayland_sink_find_display (sink))
325 return GST_STATE_CHANGE_FAILURE;
331 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
332 if (ret == GST_STATE_CHANGE_FAILURE)
335 switch (transition) {
336 case GST_STATE_CHANGE_PAUSED_TO_READY:
337 if (sink->window && gst_wl_window_is_toplevel (sink->window)) {
338 gst_buffer_replace (&sink->last_buffer, NULL);
339 g_clear_object (&sink->window);
342 case GST_STATE_CHANGE_READY_TO_NULL:
343 g_mutex_lock (&sink->display_lock);
344 /* We don't need to keep the display around, unless we are embedded
345 * in another window as a subsurface, in which case we should continue
346 * to respond to expose() and therefore both the window and the display
348 if (sink->display && !sink->window) { /* -> the window was toplevel */
349 /* Force all buffers to return to the pool, regardless of
350 * whether the compositor has released them or not. We are
351 * going to kill the display, so we need to return all buffers
352 * to be destroyed before this happens.
353 * Note that this is done here instead of the pool destructor
354 * because the buffers hold a reference to the pool. Also,
355 * the buffers can only be unref'ed from the display's event loop
356 * and the pool holds a reference to the display. If we drop
357 * our references here, when the compositor releases the buffers,
358 * they will be unref'ed from the event loop thread, which will
359 * unref the pool and therefore the display, which will try to
360 * stop the thread from within itself and cause a deadlock.
363 gst_wayland_compositor_release_all_buffers (GST_WAYLAND_BUFFER_POOL
366 g_clear_object (&sink->display);
367 g_clear_object (&sink->pool);
369 g_mutex_unlock (&sink->display_lock);
379 gst_wayland_sink_set_context (GstElement * element, GstContext * context)
381 GstWaylandSink *sink = GST_WAYLAND_SINK (element);
383 if (gst_context_has_context_type (context,
384 GST_WAYLAND_DISPLAY_HANDLE_CONTEXT_TYPE)) {
385 g_mutex_lock (&sink->display_lock);
386 if (G_LIKELY (!sink->display))
387 gst_wayland_sink_set_display_from_context (sink, context);
389 GST_WARNING_OBJECT (element, "changing display handle is not supported");
390 g_mutex_unlock (&sink->display_lock);
393 if (GST_ELEMENT_CLASS (parent_class)->set_context)
394 GST_ELEMENT_CLASS (parent_class)->set_context (element, context);
398 gst_wayland_sink_get_caps (GstBaseSink * bsink, GstCaps * filter)
400 GstWaylandSink *sink;
403 sink = GST_WAYLAND_SINK (bsink);
405 caps = gst_pad_get_pad_template_caps (GST_VIDEO_SINK_PAD (sink));
407 g_mutex_lock (&sink->display_lock);
410 GValue list = G_VALUE_INIT;
411 GValue value = G_VALUE_INIT;
414 enum wl_shm_format fmt;
416 g_value_init (&list, GST_TYPE_LIST);
417 g_value_init (&value, G_TYPE_STRING);
419 formats = sink->display->formats;
420 for (i = 0; i < formats->len; i++) {
421 fmt = g_array_index (formats, uint32_t, i);
422 g_value_set_string (&value, gst_wayland_format_to_string (fmt));
423 gst_value_list_append_value (&list, &value);
426 caps = gst_caps_make_writable (caps);
427 gst_structure_set_value (gst_caps_get_structure (caps, 0), "format", &list);
429 GST_DEBUG_OBJECT (sink, "display caps: %" GST_PTR_FORMAT, caps);
432 g_mutex_unlock (&sink->display_lock);
435 GstCaps *intersection;
438 gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
439 gst_caps_unref (caps);
447 gst_wayland_sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
449 GstWaylandSink *sink;
450 GstBufferPool *newpool;
452 enum wl_shm_format format;
455 GstStructure *structure;
456 static GstAllocationParams params = { 0, 0, 0, 15, };
458 sink = GST_WAYLAND_SINK (bsink);
460 GST_DEBUG_OBJECT (sink, "set caps %" GST_PTR_FORMAT, caps);
462 /* extract info from caps */
463 if (!gst_video_info_from_caps (&info, caps))
466 format = gst_video_format_to_wayland_format (GST_VIDEO_INFO_FORMAT (&info));
470 /* store the video size */
471 sink->video_width = info.width;
472 sink->video_height = info.height;
474 /* verify we support the requested format */
475 formats = sink->display->formats;
476 for (i = 0; i < formats->len; i++) {
477 if (g_array_index (formats, uint32_t, i) == format)
481 if (i >= formats->len)
482 goto unsupported_format;
484 /* create a new pool for the new configuration */
485 newpool = gst_wayland_buffer_pool_new (sink->display);
489 structure = gst_buffer_pool_get_config (newpool);
490 gst_buffer_pool_config_set_params (structure, caps, info.size, 2, 0);
491 gst_buffer_pool_config_set_allocator (structure, NULL, ¶ms);
492 if (!gst_buffer_pool_set_config (newpool, structure))
495 gst_object_replace ((GstObject **) & sink->pool, (GstObject *) newpool);
496 gst_object_unref (newpool);
502 GST_DEBUG_OBJECT (sink,
503 "Could not locate image format from caps %" GST_PTR_FORMAT, caps);
508 GST_DEBUG_OBJECT (sink, "Format %s is not available on the display",
509 gst_wayland_format_to_string (format));
514 GST_DEBUG_OBJECT (sink, "Failed to create new pool");
519 GST_DEBUG_OBJECT (bsink, "failed setting config");
525 gst_wayland_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query)
527 GstWaylandSink *sink = GST_WAYLAND_SINK (bsink);
528 GstBufferPool *pool = NULL;
529 GstStructure *config;
534 gst_query_parse_allocation (query, &caps, &need_pool);
540 pool = gst_object_ref (sink->pool);
545 /* we had a pool, check caps */
546 config = gst_buffer_pool_get_config (pool);
547 gst_buffer_pool_config_get_params (config, &pcaps, &size, NULL, NULL);
549 if (!gst_caps_is_equal (caps, pcaps)) {
550 /* different caps, we can't use this pool */
551 gst_object_unref (pool);
554 gst_structure_free (config);
557 if (pool == NULL && need_pool) {
560 if (!gst_video_info_from_caps (&info, caps))
563 GST_DEBUG_OBJECT (sink, "create new pool");
564 pool = gst_wayland_buffer_pool_new (sink->display);
566 /* the normal size of a frame */
569 config = gst_buffer_pool_get_config (pool);
570 gst_buffer_pool_config_set_params (config, caps, size, 2, 0);
571 if (!gst_buffer_pool_set_config (pool, config))
575 gst_query_add_allocation_pool (query, pool, size, 2, 0);
576 gst_object_unref (pool);
584 GST_DEBUG_OBJECT (bsink, "no caps specified");
589 GST_DEBUG_OBJECT (bsink, "invalid caps specified");
594 GST_DEBUG_OBJECT (bsink, "failed setting config");
595 gst_object_unref (pool);
601 gst_wayland_sink_preroll (GstBaseSink * bsink, GstBuffer * buffer)
603 GST_DEBUG_OBJECT (bsink, "preroll buffer %p", buffer);
604 return gst_wayland_sink_render (bsink, buffer);
608 frame_redraw_callback (void *data, struct wl_callback *callback, uint32_t time)
610 GstWaylandSink *sink = data;
612 GST_LOG ("frame_redraw_cb");
614 g_atomic_int_set (&sink->redraw_pending, FALSE);
615 wl_callback_destroy (callback);
618 static const struct wl_callback_listener frame_callback_listener = {
619 frame_redraw_callback
622 /* must be called with the render lock */
624 render_last_buffer (GstWaylandSink * sink)
627 struct wl_surface *surface;
628 struct wl_callback *callback;
630 meta = gst_buffer_get_wl_meta (sink->last_buffer);
631 surface = gst_wl_window_get_wl_surface (sink->window);
633 g_atomic_int_set (&sink->redraw_pending, TRUE);
634 callback = wl_surface_frame (surface);
635 wl_callback_add_listener (callback, &frame_callback_listener, sink);
637 /* Here we essentially add a reference to the buffer. This represents
638 * the fact that the compositor is using the buffer and it should
639 * not return back to the pool and be reused until the compositor
640 * releases it. The release is handled internally in the pool */
641 gst_wayland_compositor_acquire_buffer (meta->pool, sink->last_buffer);
643 wl_surface_attach (surface, meta->wbuffer, 0, 0);
644 wl_surface_damage (surface, 0, 0, sink->window->surface_width,
645 sink->window->surface_height);
647 wl_surface_commit (surface);
648 wl_display_flush (sink->display->display);
652 gst_wayland_sink_render (GstBaseSink * bsink, GstBuffer * buffer)
654 GstWaylandSink *sink = GST_WAYLAND_SINK (bsink);
655 GstBuffer *to_render;
657 GstFlowReturn ret = GST_FLOW_OK;
659 /* ask for window handle. do that before locking the sink, because
660 * set_window_handle & friends will lock it in this context */
662 gst_video_overlay_prepare_window_handle (GST_VIDEO_OVERLAY (sink));
664 g_mutex_lock (&sink->render_lock);
666 GST_LOG_OBJECT (sink, "render buffer %p", buffer);
668 /* surface is resizing - drop buffers until finished */
669 if (sink->drawing_frozen)
672 /* drop buffers until we get a frame callback */
673 if (g_atomic_int_get (&sink->redraw_pending) == TRUE)
676 /* if we were not provided a window, create one ourselves */
678 sink->window = gst_wl_window_new_toplevel (sink->display, sink->video_width,
681 gst_wl_window_set_video_size (sink->window, sink->video_width,
683 if (sink->window->surface_width == 0 || sink->window->surface_height == 0)
687 meta = gst_buffer_get_wl_meta (buffer);
689 if (meta && meta->pool->display == sink->display) {
690 GST_LOG_OBJECT (sink, "buffer %p from our pool, writing directly", buffer);
694 GST_LOG_OBJECT (sink, "buffer %p not from our pool, copying", buffer);
699 if (!gst_buffer_pool_set_active (sink->pool, TRUE))
700 goto activate_failed;
702 ret = gst_buffer_pool_acquire_buffer (sink->pool, &to_render, NULL);
703 if (ret != GST_FLOW_OK)
706 gst_buffer_map (buffer, &src, GST_MAP_READ);
707 gst_buffer_fill (to_render, 0, src.data, src.size);
708 gst_buffer_unmap (buffer, &src);
711 gst_buffer_replace (&sink->last_buffer, to_render);
712 render_last_buffer (sink);
714 /* notify _resume_rendering() in case it's waiting */
715 sink->rendered = TRUE;
716 g_cond_broadcast (&sink->render_cond);
718 if (buffer != to_render)
719 gst_buffer_unref (to_render);
724 GST_ELEMENT_ERROR (sink, RESOURCE, WRITE,
725 ("Window has no size set"),
726 ("Make sure you set the size after calling set_window_handle"));
727 ret = GST_FLOW_ERROR;
732 GST_WARNING_OBJECT (sink, "could not create image");
737 GST_ELEMENT_ERROR (sink, RESOURCE, WRITE,
738 ("Internal error: can't allocate images"),
739 ("We don't have a bufferpool negotiated"));
740 ret = GST_FLOW_ERROR;
745 GST_ERROR_OBJECT (sink, "failed to activate bufferpool.");
746 ret = GST_FLOW_ERROR;
751 g_mutex_unlock (&sink->render_lock);
757 gst_wayland_sink_videooverlay_init (GstVideoOverlayInterface * iface)
759 iface->set_window_handle = gst_wayland_sink_set_window_handle;
760 iface->set_render_rectangle = gst_wayland_sink_set_render_rectangle;
761 iface->expose = gst_wayland_sink_expose;
765 gst_wayland_sink_set_window_handle (GstVideoOverlay * overlay, guintptr handle)
767 GstWaylandSink *sink = GST_WAYLAND_SINK (overlay);
768 struct wl_surface *surface = (struct wl_surface *) handle;
770 g_return_if_fail (sink != NULL);
772 g_mutex_lock (&sink->render_lock);
774 GST_DEBUG_OBJECT (sink, "Setting window handle %" GST_PTR_FORMAT,
777 g_clear_object (&sink->window);
780 if (G_LIKELY (gst_wayland_sink_find_display (sink))) {
781 /* we cannot use our own display with an external window handle */
782 if (G_UNLIKELY (sink->display->own_display)) {
783 GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_READ_WRITE,
784 ("Application did not provide a wayland display handle"),
785 ("waylandsink cannot use an externally-supplied surface without "
786 "an externally-supplied display handle. Consider providing a "
787 "display handle from your application with GstContext"));
789 sink->window = gst_wl_window_new_in_surface (sink->display, surface);
792 GST_ERROR_OBJECT (sink, "Failed to find display handle, "
793 "ignoring window handle");
797 g_mutex_unlock (&sink->render_lock);
801 gst_wayland_sink_set_render_rectangle (GstVideoOverlay * overlay,
802 gint x, gint y, gint w, gint h)
804 GstWaylandSink *sink = GST_WAYLAND_SINK (overlay);
806 g_return_if_fail (sink != NULL);
808 g_mutex_lock (&sink->render_lock);
810 g_mutex_unlock (&sink->render_lock);
811 GST_WARNING_OBJECT (sink,
812 "set_render_rectangle called without window, ignoring");
816 GST_DEBUG_OBJECT (sink, "window geometry changed to (%d, %d) %d x %d",
818 gst_wl_window_set_render_rectangle (sink->window, x, y, w, h);
820 g_mutex_unlock (&sink->render_lock);
824 gst_wayland_sink_expose (GstVideoOverlay * overlay)
826 GstWaylandSink *sink = GST_WAYLAND_SINK (overlay);
828 g_return_if_fail (sink != NULL);
830 GST_DEBUG_OBJECT (sink, "expose");
832 g_mutex_lock (&sink->render_lock);
833 if (sink->last_buffer && g_atomic_int_get (&sink->redraw_pending) == FALSE) {
834 GST_DEBUG_OBJECT (sink, "redrawing last buffer");
835 render_last_buffer (sink);
837 g_mutex_unlock (&sink->render_lock);
841 gst_wayland_sink_waylandvideo_init (GstWaylandVideoInterface * iface)
843 iface->pause_rendering = gst_wayland_sink_pause_rendering;
844 iface->resume_rendering = gst_wayland_sink_resume_rendering;
848 gst_wayland_sink_pause_rendering (GstWaylandVideo * video)
850 GstWaylandSink *sink = GST_WAYLAND_SINK (video);
851 g_return_if_fail (sink != NULL);
853 g_mutex_lock (&sink->render_lock);
854 sink->drawing_frozen = TRUE;
855 g_mutex_unlock (&sink->render_lock);
859 gst_wayland_sink_resume_rendering (GstWaylandVideo * video)
861 GstWaylandSink *sink = GST_WAYLAND_SINK (video);
862 g_return_if_fail (sink != NULL);
864 GST_DEBUG_OBJECT (sink, "resuming rendering");
866 g_mutex_lock (&sink->render_lock);
867 sink->drawing_frozen = FALSE;
869 if (GST_STATE (sink) == GST_STATE_PLAYING) {
870 sink->rendered = FALSE;
871 while (sink->rendered == FALSE)
872 g_cond_wait (&sink->render_cond, &sink->render_lock);
873 GST_DEBUG_OBJECT (sink, "synchronized with render()");
874 } else if (sink->window && sink->last_buffer &&
875 g_atomic_int_get (&sink->redraw_pending) == FALSE) {
876 render_last_buffer (sink);
877 GST_DEBUG_OBJECT (sink, "last buffer redrawn");
880 g_mutex_unlock (&sink->render_lock);
884 plugin_init (GstPlugin * plugin)
886 GST_DEBUG_CATEGORY_INIT (gstwayland_debug, "waylandsink", 0,
887 " wayland video sink");
889 return gst_element_register (plugin, "waylandsink", GST_RANK_MARGINAL,
890 GST_TYPE_WAYLAND_SINK);
893 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
896 "Wayland Video Sink", plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME,