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>
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the Free
19 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301 USA.
24 * SECTION:element-waylandsink
26 * The waylandsink is creating its own window and render the decoded video frames to that.
27 * Setup the Wayland environment as described in
28 * <ulink url="http://wayland.freedesktop.org/building.html">Wayland</ulink> home page.
29 * The current implementaion is based on weston compositor.
32 * <title>Example pipelines</title>
34 * gst-launch -v videotestsrc ! waylandsink
35 * ]| test the video rendering in wayland
43 #include "gstwaylandsink.h"
44 #include "wlvideoformat.h"
60 GST_DEBUG_CATEGORY (gstwayland_debug);
61 #define GST_CAT_DEFAULT gstwayland_debug
63 #if G_BYTE_ORDER == G_BIG_ENDIAN
64 #define CAPS "{xRGB, ARGB}"
66 #define CAPS "{BGRx, BGRA}"
69 static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
72 GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE (CAPS))
75 /*Fixme: Add more interfaces */
76 #define gst_wayland_sink_parent_class parent_class
77 G_DEFINE_TYPE (GstWaylandSink, gst_wayland_sink, GST_TYPE_VIDEO_SINK);
79 static void gst_wayland_sink_get_property (GObject * object,
80 guint prop_id, GValue * value, GParamSpec * pspec);
81 static void gst_wayland_sink_set_property (GObject * object,
82 guint prop_id, const GValue * value, GParamSpec * pspec);
83 static void gst_wayland_sink_finalize (GObject * object);
84 static GstCaps *gst_wayland_sink_get_caps (GstBaseSink * bsink,
86 static gboolean gst_wayland_sink_set_caps (GstBaseSink * bsink, GstCaps * caps);
87 static gboolean gst_wayland_sink_start (GstBaseSink * bsink);
88 static gboolean gst_wayland_sink_preroll (GstBaseSink * bsink,
91 gst_wayland_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query);
92 static gboolean gst_wayland_sink_render (GstBaseSink * bsink,
95 static void frame_redraw_callback (void *data,
96 struct wl_callback *callback, uint32_t time);
99 gst_wayland_sink_class_init (GstWaylandSinkClass * klass)
101 GObjectClass *gobject_class;
102 GstElementClass *gstelement_class;
103 GstBaseSinkClass *gstbasesink_class;
105 gobject_class = (GObjectClass *) klass;
106 gstelement_class = (GstElementClass *) klass;
107 gstbasesink_class = (GstBaseSinkClass *) klass;
109 gobject_class->set_property = gst_wayland_sink_set_property;
110 gobject_class->get_property = gst_wayland_sink_get_property;
111 gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_wayland_sink_finalize);
113 gst_element_class_add_pad_template (gstelement_class,
114 gst_static_pad_template_get (&sink_template));
116 gst_element_class_set_static_metadata (gstelement_class,
117 "wayland video sink", "Sink/Video",
118 "Output to wayland surface",
119 "Sreerenj Balachandran <sreerenj.balachandran@intel.com>");
121 gstbasesink_class->get_caps = GST_DEBUG_FUNCPTR (gst_wayland_sink_get_caps);
122 gstbasesink_class->set_caps = GST_DEBUG_FUNCPTR (gst_wayland_sink_set_caps);
123 gstbasesink_class->start = GST_DEBUG_FUNCPTR (gst_wayland_sink_start);
124 gstbasesink_class->preroll = GST_DEBUG_FUNCPTR (gst_wayland_sink_preroll);
125 gstbasesink_class->propose_allocation =
126 GST_DEBUG_FUNCPTR (gst_wayland_sink_propose_allocation);
127 gstbasesink_class->render = GST_DEBUG_FUNCPTR (gst_wayland_sink_render);
129 g_object_class_install_property (gobject_class, PROP_WAYLAND_DISPLAY,
130 g_param_spec_pointer ("wayland-display", "Wayland Display",
131 "Wayland Display handle created by the application ",
132 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
136 gst_wayland_sink_init (GstWaylandSink * sink)
138 sink->display = NULL;
142 g_mutex_init (&sink->wayland_lock);
146 gst_wayland_sink_get_property (GObject * object,
147 guint prop_id, GValue * value, GParamSpec * pspec)
149 GstWaylandSink *sink = GST_WAYLAND_SINK (object);
152 case PROP_WAYLAND_DISPLAY:
153 g_value_set_pointer (value, sink->display);
156 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
162 gst_wayland_sink_set_property (GObject * object,
163 guint prop_id, const GValue * value, GParamSpec * pspec)
165 GstWaylandSink *sink = GST_WAYLAND_SINK (object);
168 case PROP_WAYLAND_DISPLAY:
169 sink->display = g_value_get_pointer (value);
172 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
178 gst_wayland_sink_finalize (GObject * object)
180 GstWaylandSink *sink = GST_WAYLAND_SINK (object);
182 GST_DEBUG_OBJECT (sink, "Finalizing the sink..");
185 g_object_unref (sink->window);
187 g_object_unref (sink->display);
189 g_mutex_clear (&sink->wayland_lock);
191 G_OBJECT_CLASS (parent_class)->finalize (object);
195 gst_wayland_sink_get_caps (GstBaseSink * bsink, GstCaps * filter)
197 GstWaylandSink *sink;
200 sink = GST_WAYLAND_SINK (bsink);
202 caps = gst_pad_get_pad_template_caps (GST_VIDEO_SINK_PAD (sink));
204 GstCaps *intersection;
207 gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
208 gst_caps_unref (caps);
215 gst_wayland_sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
217 GstWaylandSink *sink;
218 GstBufferPool *newpool, *oldpool;
220 GstStructure *structure;
221 static GstAllocationParams params = { 0, 0, 0, 15, };
224 sink = GST_WAYLAND_SINK (bsink);
226 GST_LOG_OBJECT (sink, "set caps %" GST_PTR_FORMAT, caps);
228 if (!gst_video_info_from_caps (&info, caps))
231 if (!gst_wayland_sink_format_from_caps (&sink->format, caps))
234 if (!(sink->display->formats & (1 << sink->format))) {
235 GST_DEBUG_OBJECT (sink, "%s not available",
236 gst_wayland_format_to_string (sink->format));
240 sink->video_width = info.width;
241 sink->video_height = info.height;
244 /* create a new pool for the new configuration */
245 newpool = gst_wayland_buffer_pool_new (sink);
248 GST_DEBUG_OBJECT (sink, "Failed to create new pool");
252 structure = gst_buffer_pool_get_config (newpool);
253 gst_buffer_pool_config_set_params (structure, caps, size, 2, 0);
254 gst_buffer_pool_config_set_allocator (structure, NULL, ¶ms);
255 if (!gst_buffer_pool_set_config (newpool, structure))
258 oldpool = sink->pool;
259 sink->pool = newpool;
261 gst_object_unref (oldpool);
267 GST_DEBUG_OBJECT (sink,
268 "Could not locate image format from caps %" GST_PTR_FORMAT, caps);
273 GST_DEBUG_OBJECT (bsink, "failed setting config");
279 gst_wayland_sink_start (GstBaseSink * bsink)
281 GstWaylandSink *sink = (GstWaylandSink *) bsink;
282 gboolean result = TRUE;
283 GError *error = NULL;
285 GST_DEBUG_OBJECT (sink, "start");
288 sink->display = gst_wl_display_new (NULL, &error);
290 if (sink->display == NULL) {
291 GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_READ_WRITE,
292 ("Could not initialise Wayland output"),
293 ("Failed to create GstWlDisplay: '%s'", error->message));
301 gst_wayland_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query)
303 GstWaylandSink *sink = GST_WAYLAND_SINK (bsink);
305 GstStructure *config;
310 gst_query_parse_allocation (query, &caps, &need_pool);
315 g_mutex_lock (&sink->wayland_lock);
316 if ((pool = sink->pool))
317 gst_object_ref (pool);
318 g_mutex_unlock (&sink->wayland_lock);
323 /* we had a pool, check caps */
324 config = gst_buffer_pool_get_config (pool);
325 gst_buffer_pool_config_get_params (config, &pcaps, &size, NULL, NULL);
327 if (!gst_caps_is_equal (caps, pcaps)) {
328 /* different caps, we can't use this pool */
329 gst_object_unref (pool);
332 gst_structure_free (config);
335 if (pool == NULL && need_pool) {
338 if (!gst_video_info_from_caps (&info, caps))
341 GST_DEBUG_OBJECT (sink, "create new pool");
342 pool = gst_wayland_buffer_pool_new (sink);
344 /* the normal size of a frame */
347 config = gst_buffer_pool_get_config (pool);
348 gst_buffer_pool_config_set_params (config, caps, size, 2, 0);
349 if (!gst_buffer_pool_set_config (pool, config))
353 gst_query_add_allocation_pool (query, pool, size, 2, 0);
354 gst_object_unref (pool);
362 GST_DEBUG_OBJECT (bsink, "no caps specified");
367 GST_DEBUG_OBJECT (bsink, "invalid caps specified");
372 GST_DEBUG_OBJECT (bsink, "failed setting config");
373 gst_object_unref (pool);
379 gst_wayland_sink_preroll (GstBaseSink * bsink, GstBuffer * buffer)
381 GST_DEBUG_OBJECT (bsink, "preroll buffer %p", buffer);
382 return gst_wayland_sink_render (bsink, buffer);
386 frame_redraw_callback (void *data, struct wl_callback *callback, uint32_t time)
388 GST_LOG ("frame_redraw_cb");
389 wl_callback_destroy (callback);
392 static const struct wl_callback_listener frame_callback_listener = {
393 frame_redraw_callback
397 gst_wayland_sink_render (GstBaseSink * bsink, GstBuffer * buffer)
399 GstWaylandSink *sink = GST_WAYLAND_SINK (bsink);
400 GstVideoRectangle src, dst, res;
401 GstBuffer *to_render;
404 struct wl_surface *surface;
405 struct wl_callback *callback;
407 GST_LOG_OBJECT (sink, "render buffer %p", buffer);
409 sink->window = gst_wl_window_new_toplevel (sink->display, sink->video_width,
412 meta = gst_buffer_get_wl_meta (buffer);
414 if (meta && meta->sink == sink) {
415 GST_LOG_OBJECT (sink, "buffer %p from our pool, writing directly", buffer);
419 GST_LOG_OBJECT (sink, "buffer %p not from our pool, copying", buffer);
424 if (!gst_buffer_pool_set_active (sink->pool, TRUE))
425 goto activate_failed;
427 ret = gst_buffer_pool_acquire_buffer (sink->pool, &to_render, NULL);
428 if (ret != GST_FLOW_OK)
431 gst_buffer_map (buffer, &src, GST_MAP_READ);
432 gst_buffer_fill (to_render, 0, src.data, src.size);
433 gst_buffer_unmap (buffer, &src);
435 meta = gst_buffer_get_wl_meta (to_render);
438 src.w = sink->video_width;
439 src.h = sink->video_height;
440 dst.w = sink->window->width;
441 dst.h = sink->window->height;
443 gst_video_sink_center_rect (src, dst, &res, FALSE);
445 surface = gst_wl_window_get_wl_surface (sink->window);
447 wl_surface_attach (surface, meta->wbuffer, 0, 0);
448 wl_surface_damage (surface, 0, 0, res.w, res.h);
449 callback = wl_surface_frame (surface);
450 wl_callback_add_listener (callback, &frame_callback_listener, NULL);
451 wl_surface_commit (surface);
452 wl_display_flush (sink->display->display);
454 if (buffer != to_render)
455 gst_buffer_unref (to_render);
460 GST_WARNING_OBJECT (sink, "could not create image");
465 GST_ELEMENT_ERROR (sink, RESOURCE, WRITE,
466 ("Internal error: can't allocate images"),
467 ("We don't have a bufferpool negotiated"));
468 return GST_FLOW_ERROR;
472 GST_ERROR_OBJECT (sink, "failed to activate bufferpool.");
473 ret = GST_FLOW_ERROR;
479 plugin_init (GstPlugin * plugin)
481 GST_DEBUG_CATEGORY_INIT (gstwayland_debug, "waylandsink", 0,
482 " wayland video sink");
484 return gst_element_register (plugin, "waylandsink", GST_RANK_MARGINAL,
485 GST_TYPE_WAYLAND_SINK);
488 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
491 "Wayland Video Sink", plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME,