1 | /* |
2 | * Copyright © 2018 Benjamin Otte |
3 | * |
4 | * This library is free software; you can redistribute it and/or |
5 | * modify it under the terms of the GNU Lesser General Public |
6 | * License as published by the Free Software Foundation; either |
7 | * version 2.1 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 | * Lesser General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with this library. If not, see <http://www.gnu.org/licenses/>. |
16 | * |
17 | * Authors: Benjamin Otte <otte@gnome.org> |
18 | */ |
19 | |
20 | #include "config.h" |
21 | |
22 | #include "gtkgstpaintableprivate.h" |
23 | #include "gtkgstsinkprivate.h" |
24 | |
25 | #include <gtk/gtk.h> |
26 | #include <gst/player/gstplayer-video-renderer.h> |
27 | |
28 | #include <math.h> |
29 | |
30 | struct _GtkGstPaintable |
31 | { |
32 | GObject parent_instance; |
33 | |
34 | GdkPaintable *image; |
35 | double pixel_aspect_ratio; |
36 | |
37 | GdkGLContext *context; |
38 | }; |
39 | |
40 | struct _GtkGstPaintableClass |
41 | { |
42 | GObjectClass parent_class; |
43 | }; |
44 | |
45 | static void |
46 | gtk_gst_paintable_paintable_snapshot (GdkPaintable *paintable, |
47 | GdkSnapshot *snapshot, |
48 | double width, |
49 | double height) |
50 | { |
51 | GtkGstPaintable *self = GTK_GST_PAINTABLE (ptr: paintable); |
52 | |
53 | if (self->image) |
54 | gdk_paintable_snapshot (paintable: self->image, snapshot, width, height); |
55 | } |
56 | |
57 | static GdkPaintable * |
58 | gtk_gst_paintable_paintable_get_current_image (GdkPaintable *paintable) |
59 | { |
60 | GtkGstPaintable *self = GTK_GST_PAINTABLE (ptr: paintable); |
61 | |
62 | if (self->image) |
63 | return GDK_PAINTABLE (g_object_ref (self->image)); |
64 | |
65 | return gdk_paintable_new_empty (intrinsic_width: 0, intrinsic_height: 0); |
66 | } |
67 | |
68 | static int |
69 | gtk_gst_paintable_paintable_get_intrinsic_width (GdkPaintable *paintable) |
70 | { |
71 | GtkGstPaintable *self = GTK_GST_PAINTABLE (ptr: paintable); |
72 | |
73 | if (self->image) |
74 | return round (x: self->pixel_aspect_ratio * |
75 | gdk_paintable_get_intrinsic_width (paintable: self->image)); |
76 | |
77 | return 0; |
78 | } |
79 | |
80 | static int |
81 | gtk_gst_paintable_paintable_get_intrinsic_height (GdkPaintable *paintable) |
82 | { |
83 | GtkGstPaintable *self = GTK_GST_PAINTABLE (ptr: paintable); |
84 | |
85 | if (self->image) |
86 | return gdk_paintable_get_intrinsic_height (paintable: self->image); |
87 | |
88 | return 0; |
89 | } |
90 | |
91 | static double |
92 | gtk_gst_paintable_paintable_get_intrinsic_aspect_ratio (GdkPaintable *paintable) |
93 | { |
94 | GtkGstPaintable *self = GTK_GST_PAINTABLE (ptr: paintable); |
95 | |
96 | if (self->image) |
97 | return self->pixel_aspect_ratio * |
98 | gdk_paintable_get_intrinsic_aspect_ratio (paintable: self->image); |
99 | |
100 | return 0.0; |
101 | }; |
102 | |
103 | static void |
104 | gtk_gst_paintable_paintable_init (GdkPaintableInterface *iface) |
105 | { |
106 | iface->snapshot = gtk_gst_paintable_paintable_snapshot; |
107 | iface->get_current_image = gtk_gst_paintable_paintable_get_current_image; |
108 | iface->get_intrinsic_width = gtk_gst_paintable_paintable_get_intrinsic_width; |
109 | iface->get_intrinsic_height = gtk_gst_paintable_paintable_get_intrinsic_height; |
110 | iface->get_intrinsic_aspect_ratio = gtk_gst_paintable_paintable_get_intrinsic_aspect_ratio; |
111 | } |
112 | |
113 | static GstElement * |
114 | gtk_gst_paintable_video_renderer_create_video_sink (GstPlayerVideoRenderer *renderer, |
115 | GstPlayer *player) |
116 | { |
117 | GtkGstPaintable *self = GTK_GST_PAINTABLE (ptr: renderer); |
118 | GstElement *sink; |
119 | GdkGLContext *ctx; |
120 | |
121 | sink = g_object_new (GTK_TYPE_GST_SINK, |
122 | first_property_name: "paintable" , self, |
123 | "gl-context" , self->context, |
124 | NULL); |
125 | |
126 | if (self->context != NULL) |
127 | g_object_get (GTK_GST_SINK (sink), first_property_name: "gl-context" , &ctx, NULL); |
128 | |
129 | if (self->context != NULL && ctx != NULL) |
130 | { |
131 | GstElement *glsinkbin = gst_element_factory_make (factoryname: "glsinkbin" , NULL); |
132 | |
133 | if (!glsinkbin) |
134 | return NULL; |
135 | |
136 | g_object_set (object: glsinkbin, first_property_name: "sink" , sink, NULL); |
137 | g_object_unref (object: ctx); |
138 | |
139 | return glsinkbin; |
140 | } |
141 | else |
142 | { |
143 | if (self->context != NULL) |
144 | { |
145 | g_warning ("GstGL context creation failed, falling back to non-GL playback" ); |
146 | |
147 | g_object_unref (object: sink); |
148 | sink = g_object_new (GTK_TYPE_GST_SINK, |
149 | first_property_name: "paintable" , self, |
150 | NULL); |
151 | } |
152 | |
153 | return sink; |
154 | } |
155 | } |
156 | |
157 | static void |
158 | gtk_gst_paintable_video_renderer_init (GstPlayerVideoRendererInterface *iface) |
159 | { |
160 | iface->create_video_sink = gtk_gst_paintable_video_renderer_create_video_sink; |
161 | } |
162 | |
163 | G_DEFINE_TYPE_WITH_CODE (GtkGstPaintable, gtk_gst_paintable, G_TYPE_OBJECT, |
164 | G_IMPLEMENT_INTERFACE (GDK_TYPE_PAINTABLE, |
165 | gtk_gst_paintable_paintable_init) |
166 | G_IMPLEMENT_INTERFACE (GST_TYPE_PLAYER_VIDEO_RENDERER, |
167 | gtk_gst_paintable_video_renderer_init)); |
168 | |
169 | static void |
170 | gtk_gst_paintable_dispose (GObject *object) |
171 | { |
172 | GtkGstPaintable *self = GTK_GST_PAINTABLE (ptr: object); |
173 | |
174 | g_clear_object (&self->image); |
175 | |
176 | G_OBJECT_CLASS (gtk_gst_paintable_parent_class)->dispose (object); |
177 | } |
178 | |
179 | static void |
180 | gtk_gst_paintable_class_init (GtkGstPaintableClass *klass) |
181 | { |
182 | GObjectClass *object_class = G_OBJECT_CLASS (klass); |
183 | |
184 | object_class->dispose = gtk_gst_paintable_dispose; |
185 | } |
186 | |
187 | static void |
188 | gtk_gst_paintable_init (GtkGstPaintable *self) |
189 | { |
190 | } |
191 | |
192 | GdkPaintable * |
193 | gtk_gst_paintable_new (void) |
194 | { |
195 | return g_object_new (GTK_TYPE_GST_PAINTABLE, NULL); |
196 | } |
197 | |
198 | void |
199 | gtk_gst_paintable_realize (GtkGstPaintable *self, |
200 | GdkSurface *surface) |
201 | { |
202 | GError *error = NULL; |
203 | |
204 | if (self->context) |
205 | return; |
206 | |
207 | self->context = gdk_surface_create_gl_context (surface, error: &error); |
208 | if (self->context == NULL) |
209 | { |
210 | GST_INFO ("failed to create GDK GL context: %s" , error->message); |
211 | g_error_free (error); |
212 | return; |
213 | } |
214 | |
215 | if (!gdk_gl_context_realize (context: self->context, error: &error)) |
216 | { |
217 | GST_INFO ("failed to realize GDK GL context: %s" , error->message); |
218 | g_clear_object (&self->context); |
219 | g_error_free (error); |
220 | return; |
221 | } |
222 | } |
223 | |
224 | void |
225 | gtk_gst_paintable_unrealize (GtkGstPaintable *self, |
226 | GdkSurface *surface) |
227 | { |
228 | /* XXX: We could be smarter here and: |
229 | * - track how often we were realized with that surface |
230 | * - track alternate surfaces |
231 | */ |
232 | if (self->context == NULL) |
233 | return; |
234 | |
235 | if (gdk_gl_context_get_surface (context: self->context) == surface) |
236 | g_clear_object (&self->context); |
237 | } |
238 | |
239 | static void |
240 | gtk_gst_paintable_set_paintable (GtkGstPaintable *self, |
241 | GdkPaintable *paintable, |
242 | double pixel_aspect_ratio) |
243 | { |
244 | gboolean size_changed; |
245 | |
246 | if (self->image == paintable) |
247 | return; |
248 | |
249 | if (self->image == NULL || |
250 | self->pixel_aspect_ratio * gdk_paintable_get_intrinsic_width (paintable: self->image) != |
251 | pixel_aspect_ratio * gdk_paintable_get_intrinsic_width (paintable) || |
252 | gdk_paintable_get_intrinsic_height (paintable: self->image) != gdk_paintable_get_intrinsic_height (paintable) || |
253 | gdk_paintable_get_intrinsic_aspect_ratio (paintable: self->image) != gdk_paintable_get_intrinsic_aspect_ratio (paintable)) |
254 | size_changed = TRUE; |
255 | else |
256 | size_changed = FALSE; |
257 | |
258 | g_set_object (&self->image, paintable); |
259 | self->pixel_aspect_ratio = pixel_aspect_ratio; |
260 | |
261 | if (size_changed) |
262 | gdk_paintable_invalidate_size (paintable: GDK_PAINTABLE (ptr: self)); |
263 | |
264 | gdk_paintable_invalidate_contents (paintable: GDK_PAINTABLE (ptr: self)); |
265 | } |
266 | |
267 | typedef struct _SetTextureInvocation SetTextureInvocation; |
268 | |
269 | struct _SetTextureInvocation { |
270 | GtkGstPaintable *paintable; |
271 | GdkTexture *texture; |
272 | double pixel_aspect_ratio; |
273 | }; |
274 | |
275 | static void |
276 | set_texture_invocation_free (SetTextureInvocation *invoke) |
277 | { |
278 | g_object_unref (object: invoke->paintable); |
279 | g_object_unref (object: invoke->texture); |
280 | |
281 | g_slice_free (SetTextureInvocation, invoke); |
282 | } |
283 | |
284 | static gboolean |
285 | gtk_gst_paintable_set_texture_invoke (gpointer data) |
286 | { |
287 | SetTextureInvocation *invoke = data; |
288 | |
289 | gtk_gst_paintable_set_paintable (self: invoke->paintable, |
290 | paintable: GDK_PAINTABLE (ptr: invoke->texture), |
291 | pixel_aspect_ratio: invoke->pixel_aspect_ratio); |
292 | |
293 | return G_SOURCE_REMOVE; |
294 | } |
295 | |
296 | void |
297 | gtk_gst_paintable_queue_set_texture (GtkGstPaintable *self, |
298 | GdkTexture *texture, |
299 | double pixel_aspect_ratio) |
300 | { |
301 | SetTextureInvocation *invoke; |
302 | |
303 | invoke = g_slice_new0 (SetTextureInvocation); |
304 | invoke->paintable = g_object_ref (self); |
305 | invoke->texture = g_object_ref (texture); |
306 | invoke->pixel_aspect_ratio = pixel_aspect_ratio; |
307 | |
308 | g_main_context_invoke_full (NULL, |
309 | G_PRIORITY_DEFAULT, |
310 | function: gtk_gst_paintable_set_texture_invoke, |
311 | data: invoke, |
312 | notify: (GDestroyNotify) set_texture_invocation_free); |
313 | } |
314 | |
315 | |