3 * Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
22 * SECTION:element-gtkglsink
30 #include <gst/gl/gstglfuncs.h>
31 #include <gst/video/gstvideoaffinetransformationmeta.h>
33 #include "gstgtkglsink.h"
34 #include "gtkgstglwidget.h"
36 GST_DEBUG_CATEGORY (gst_debug_gtk_gl_sink);
37 #define GST_CAT_DEFAULT gst_debug_gtk_gl_sink
39 static void gst_gtk_gl_sink_set_property (GObject * object, guint prop_id,
40 const GValue * value, GParamSpec * pspec);
41 static void gst_gtk_gl_sink_get_property (GObject * object, guint prop_id,
42 GValue * value, GParamSpec * pspec);
44 static gboolean gst_gtk_gl_sink_start (GstBaseSink * bsink);
45 static gboolean gst_gtk_gl_sink_stop (GstBaseSink * bsink);
46 static gboolean gst_gtk_gl_sink_query (GstBaseSink * bsink, GstQuery * query);
47 static gboolean gst_gtk_gl_sink_propose_allocation (GstBaseSink * bsink,
49 static GstCaps *gst_gtk_gl_sink_get_caps (GstBaseSink * bsink,
51 static gboolean gst_gtk_gl_sink_event (GstBaseSink * sink, GstEvent * event);
53 static void gst_gtk_gl_sink_finalize (GObject * object);
55 static GstStaticPadTemplate gst_gtk_gl_sink_template =
56 GST_STATIC_PAD_TEMPLATE ("sink",
59 GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
60 (GST_CAPS_FEATURE_MEMORY_GL_MEMORY, "RGBA") "; "
61 GST_VIDEO_CAPS_MAKE_WITH_FEATURES
62 (GST_CAPS_FEATURE_MEMORY_GL_MEMORY ", "
63 GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION, "RGBA")));
65 #define gst_gtk_gl_sink_parent_class parent_class
66 G_DEFINE_TYPE_WITH_CODE (GstGtkGLSink, gst_gtk_gl_sink,
67 GST_TYPE_GTK_BASE_SINK, GST_DEBUG_CATEGORY_INIT (gst_debug_gtk_gl_sink,
68 "gtkglsink", 0, "Gtk GL Video Sink"));
69 GST_ELEMENT_REGISTER_DEFINE (gtkglsink, "gtkglsink", GST_RANK_NONE,
70 GST_TYPE_GTK_GL_SINK);
80 gst_gtk_gl_sink_class_init (GstGtkGLSinkClass * klass)
82 GObjectClass *gobject_class;
83 GstElementClass *gstelement_class;
84 GstBaseSinkClass *gstbasesink_class;
85 GstGtkBaseSinkClass *gstgtkbasesink_class;
87 gobject_class = (GObjectClass *) klass;
88 gstelement_class = (GstElementClass *) klass;
89 gstbasesink_class = (GstBaseSinkClass *) klass;
90 gstgtkbasesink_class = (GstGtkBaseSinkClass *) klass;
92 gobject_class->set_property = gst_gtk_gl_sink_set_property;
93 gobject_class->get_property = gst_gtk_gl_sink_get_property;
94 gobject_class->finalize = gst_gtk_gl_sink_finalize;
96 gstbasesink_class->query = gst_gtk_gl_sink_query;
97 gstbasesink_class->propose_allocation = gst_gtk_gl_sink_propose_allocation;
98 gstbasesink_class->start = gst_gtk_gl_sink_start;
99 gstbasesink_class->stop = gst_gtk_gl_sink_stop;
100 gstbasesink_class->get_caps = gst_gtk_gl_sink_get_caps;
101 gstbasesink_class->event = gst_gtk_gl_sink_event;
103 gstgtkbasesink_class->create_widget = gtk_gst_gl_widget_new;
104 gstgtkbasesink_class->window_title = "Gtk+ GL renderer";
107 * gtkglsink:rotate-method:
109 * Rotation method #GstVideoOrientationMethod used to render the media
113 g_object_class_install_property (gobject_class, PROP_ROTATE_METHOD,
114 g_param_spec_enum ("rotate-method",
117 GST_TYPE_VIDEO_ORIENTATION_METHOD, GST_VIDEO_ORIENTATION_IDENTITY,
118 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
120 gst_element_class_set_metadata (gstelement_class, "Gtk GL Video Sink",
121 "Sink/Video", "A video sink that renders to a GtkWidget using OpenGL",
122 "Matthew Waters <matthew@centricular.com>");
124 gst_element_class_add_static_pad_template (gstelement_class,
125 &gst_gtk_gl_sink_template);
129 gst_gtk_gl_sink_init (GstGtkGLSink * gtk_sink)
134 gst_gtk_gl_sink_set_property (GObject * object, guint prop_id,
135 const GValue * value, GParamSpec * pspec)
138 case PROP_ROTATE_METHOD:
139 gtk_gst_gl_widget_set_rotate_method (GTK_GST_GL_WIDGET
140 (gst_gtk_base_sink_acquire_widget (GST_GTK_BASE_SINK (object))),
141 g_value_get_enum (value), FALSE);
145 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
152 gst_gtk_gl_sink_get_property (GObject * object, guint prop_id,
153 GValue * value, GParamSpec * pspec)
156 case PROP_ROTATE_METHOD:
157 g_value_set_enum (value,
158 gtk_gst_gl_widget_get_rotate_method (GTK_GST_GL_WIDGET
159 (gst_gtk_base_sink_acquire_widget (GST_GTK_BASE_SINK (object)))));
163 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
169 gst_gtk_gl_sink_query (GstBaseSink * bsink, GstQuery * query)
171 GstGtkGLSink *gtk_sink = GST_GTK_GL_SINK (bsink);
172 gboolean res = FALSE;
174 switch (GST_QUERY_TYPE (query)) {
175 case GST_QUERY_CONTEXT:
177 if (gst_gl_handle_context_query ((GstElement *) gtk_sink, query,
178 gtk_sink->display, gtk_sink->context, gtk_sink->gtk_context))
183 res = GST_BASE_SINK_CLASS (parent_class)->query (bsink, query);
191 _size_changed_cb (GtkWidget * widget, GdkRectangle * rectangle,
192 GstGtkGLSink * gtk_sink)
194 gint scale_factor, width, height;
195 gboolean reconfigure;
197 scale_factor = gtk_widget_get_scale_factor (widget);
198 width = scale_factor * gtk_widget_get_allocated_width (widget);
199 height = scale_factor * gtk_widget_get_allocated_height (widget);
201 GST_OBJECT_LOCK (gtk_sink);
203 (width != gtk_sink->display_width || height != gtk_sink->display_height);
204 gtk_sink->display_width = width;
205 gtk_sink->display_height = height;
206 GST_OBJECT_UNLOCK (gtk_sink);
209 GST_DEBUG_OBJECT (gtk_sink, "Sending reconfigure event on sinkpad.");
210 gst_pad_push_event (GST_BASE_SINK (gtk_sink)->sinkpad,
211 gst_event_new_reconfigure ());
216 destroy_cb (GtkWidget * widget, GstGtkGLSink * gtk_sink)
218 if (gtk_sink->size_allocate_sig_handler) {
219 g_signal_handler_disconnect (widget, gtk_sink->size_allocate_sig_handler);
220 gtk_sink->size_allocate_sig_handler = 0;
223 if (gtk_sink->widget_destroy_sig_handler) {
224 g_signal_handler_disconnect (widget, gtk_sink->widget_destroy_sig_handler);
225 gtk_sink->widget_destroy_sig_handler = 0;
230 gst_gtk_gl_sink_start (GstBaseSink * bsink)
232 GstGtkBaseSink *base_sink = GST_GTK_BASE_SINK (bsink);
233 GstGtkGLSink *gtk_sink = GST_GTK_GL_SINK (bsink);
234 GtkGstGLWidget *gst_widget;
236 if (!GST_BASE_SINK_CLASS (parent_class)->start (bsink))
239 /* After this point, gtk_sink->widget will always be set */
240 gst_widget = GTK_GST_GL_WIDGET (base_sink->widget);
242 /* Track the allocation size */
243 gtk_sink->size_allocate_sig_handler =
244 g_signal_connect (gst_widget, "size-allocate",
245 G_CALLBACK (_size_changed_cb), gtk_sink);
247 gtk_sink->widget_destroy_sig_handler =
248 g_signal_connect (gst_widget, "destroy", G_CALLBACK (destroy_cb),
251 _size_changed_cb (GTK_WIDGET (gst_widget), NULL, gtk_sink);
253 if (!gtk_gst_gl_widget_init_winsys (gst_widget)) {
254 GST_ELEMENT_ERROR (bsink, RESOURCE, NOT_FOUND, ("%s",
255 "Failed to initialize OpenGL with Gtk"), (NULL));
259 gtk_sink->display = gtk_gst_gl_widget_get_display (gst_widget);
260 gtk_sink->context = gtk_gst_gl_widget_get_context (gst_widget);
261 gtk_sink->gtk_context = gtk_gst_gl_widget_get_gtk_context (gst_widget);
263 if (!gtk_sink->display || !gtk_sink->context || !gtk_sink->gtk_context) {
264 GST_ELEMENT_ERROR (bsink, RESOURCE, NOT_FOUND, ("%s",
265 "Failed to retrieve OpenGL context from Gtk"), (NULL));
269 gst_gl_element_propagate_display_context (GST_ELEMENT (bsink),
276 gst_gtk_gl_sink_stop (GstBaseSink * bsink)
278 GstGtkGLSink *gtk_sink = GST_GTK_GL_SINK (bsink);
280 if (gtk_sink->display) {
281 gst_object_unref (gtk_sink->display);
282 gtk_sink->display = NULL;
285 if (gtk_sink->context) {
286 gst_object_unref (gtk_sink->context);
287 gtk_sink->context = NULL;
290 if (gtk_sink->gtk_context) {
291 gst_object_unref (gtk_sink->gtk_context);
292 gtk_sink->gtk_context = NULL;
295 return GST_BASE_SINK_CLASS (parent_class)->stop (bsink);
299 gst_gtk_gl_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query)
301 GstGtkGLSink *gtk_sink = GST_GTK_GL_SINK (bsink);
302 GstBufferPool *pool = NULL;
303 GstStructure *config;
308 GstStructure *allocation_meta = NULL;
309 gint display_width, display_height;
311 if (!gtk_sink->display || !gtk_sink->context)
314 gst_query_parse_allocation (query, &caps, &need_pool);
319 if (!gst_video_info_from_caps (&info, caps))
322 /* the normal size of a frame */
326 GST_DEBUG_OBJECT (gtk_sink, "create new pool");
327 pool = gst_gl_buffer_pool_new (gtk_sink->context);
329 config = gst_buffer_pool_get_config (pool);
330 gst_buffer_pool_config_set_params (config, caps, size, 0, 0);
331 gst_buffer_pool_config_add_option (config,
332 GST_BUFFER_POOL_OPTION_GL_SYNC_META);
334 if (!gst_buffer_pool_set_config (pool, config))
338 /* we need at least 2 buffer because we hold on to the last one */
339 gst_query_add_allocation_pool (query, pool, size, 2, 0);
341 gst_object_unref (pool);
343 GST_OBJECT_LOCK (gtk_sink);
344 display_width = gtk_sink->display_width;
345 display_height = gtk_sink->display_height;
346 GST_OBJECT_UNLOCK (gtk_sink);
348 if (display_width != 0 && display_height != 0) {
349 GST_DEBUG_OBJECT (gtk_sink, "sending alloc query with size %dx%d",
350 display_width, display_height);
351 allocation_meta = gst_structure_new ("GstVideoOverlayCompositionMeta",
352 "width", G_TYPE_UINT, display_width,
353 "height", G_TYPE_UINT, display_height, NULL);
356 gst_query_add_allocation_meta (query,
357 GST_VIDEO_OVERLAY_COMPOSITION_META_API_TYPE, allocation_meta);
360 gst_structure_free (allocation_meta);
362 /* we also support various metadata */
363 gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, 0);
364 gst_query_add_allocation_meta (query,
365 GST_VIDEO_AFFINE_TRANSFORMATION_META_API_TYPE, 0);
367 if (gtk_sink->context->gl_vtable->FenceSync)
368 gst_query_add_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, 0);
375 GST_DEBUG_OBJECT (bsink, "no caps specified");
380 GST_DEBUG_OBJECT (bsink, "invalid caps specified");
385 GST_DEBUG_OBJECT (bsink, "failed setting config");
391 gst_gtk_gl_sink_get_caps (GstBaseSink * bsink, GstCaps * filter)
394 GstCaps *result = NULL;
396 tmp = gst_pad_get_pad_template_caps (GST_BASE_SINK_PAD (bsink));
399 GST_DEBUG_OBJECT (bsink, "intersecting with filter caps %" GST_PTR_FORMAT,
402 result = gst_caps_intersect_full (filter, tmp, GST_CAPS_INTERSECT_FIRST);
403 gst_caps_unref (tmp);
408 result = gst_gl_overlay_compositor_add_caps (result);
410 GST_DEBUG_OBJECT (bsink, "returning caps: %" GST_PTR_FORMAT, result);
416 gst_gtk_gl_sink_finalize (GObject * object)
418 GstGtkGLSink *gtk_sink = GST_GTK_GL_SINK (object);
419 GstGtkBaseSink *base_sink = GST_GTK_BASE_SINK (object);
421 if (gtk_sink->size_allocate_sig_handler) {
422 g_signal_handler_disconnect (base_sink->widget,
423 gtk_sink->size_allocate_sig_handler);
424 gtk_sink->size_allocate_sig_handler = 0;
427 if (gtk_sink->widget_destroy_sig_handler) {
428 g_signal_handler_disconnect (base_sink->widget,
429 gtk_sink->widget_destroy_sig_handler);
430 gtk_sink->widget_destroy_sig_handler = 0;
433 G_OBJECT_CLASS (parent_class)->finalize (object);
438 gst_gtk_gl_sink_event (GstBaseSink * sink, GstEvent * event)
441 GstVideoOrientationMethod orientation;
443 GtkGstGLWidget *widget;
445 GST_DEBUG_OBJECT (sink, "handling %s event", GST_EVENT_TYPE_NAME (event));
447 switch (GST_EVENT_TYPE (event)) {
449 gst_event_parse_tag (event, &taglist);
451 if (gst_video_orientation_from_tag (taglist, &orientation)) {
453 widget = GTK_GST_GL_WIDGET
454 (gst_gtk_base_sink_acquire_widget (GST_GTK_BASE_SINK (sink)));
456 gtk_gst_gl_widget_set_rotate_method (widget, orientation, TRUE);
463 ret = GST_BASE_SINK_CLASS (parent_class)->event (sink, event);