1 /*
2 * GStreamer
3 * Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
4 *
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.
9 *
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.
14 *
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.
19 */
20
21 #ifdef HAVE_CONFIG_H
22 #include "config.h"
23 #endif
24
25 #include <gst/video/videooverlay.h>
26 #include <gst/video/navigation.h>
27 #include <gst/controller/gstproxycontrolbinding.h>
28
29 #include "gstglsinkbin.h"
30
31 GST_DEBUG_CATEGORY (gst_debug_gl_sink_bin);
32 #define GST_CAT_DEFAULT gst_debug_gl_sink_bin
33
34 static void gst_gl_sink_bin_finalize (GObject * object);
35 static void gst_gl_sink_bin_set_property (GObject * object, guint prop_id,
36 const GValue * value, GParamSpec * param_spec);
37 static void gst_gl_sink_bin_get_property (GObject * object, guint prop_id,
38 GValue * value, GParamSpec * param_spec);
39
40 static GstStateChangeReturn gst_gl_sink_bin_change_state (GstElement * element,
41 GstStateChange transition);
42
43 static void gst_gl_sink_bin_video_overlay_init (gpointer g_iface,
44 gpointer g_iface_data);
45 static void gst_gl_sink_bin_navigation_interface_init (gpointer g_iface,
46 gpointer g_iface_data);
47 static void gst_gl_sink_bin_color_balance_init (gpointer g_iface,
48 gpointer g_iface_data);
49
50 #define DEFAULT_SYNC TRUE
51 #define DEFAULT_MAX_LATENESS -1
52 #define DEFAULT_QOS FALSE
53 #define DEFAULT_ASYNC TRUE
54 #define DEFAULT_TS_OFFSET 0
55 #define DEFAULT_BLOCKSIZE 4096
56 #define DEFAULT_RENDER_DELAY 0
57 #define DEFAULT_ENABLE_LAST_SAMPLE TRUE
58 #define DEFAULT_THROTTLE_TIME 0
59 #define DEFAULT_MAX_BITRATE 0
60
61 /* GstGLColorBalance properties */
62 #define DEFAULT_PROP_CONTRAST 1.0
63 #define DEFAULT_PROP_BRIGHTNESS 0.0
64 #define DEFAULT_PROP_HUE 0.0
65 #define DEFAULT_PROP_SATURATION 1.0
66
67 enum
68 {
69 PROP_0,
70 PROP_FORCE_ASPECT_RATIO,
71 PROP_SINK,
72 PROP_SYNC,
73 PROP_MAX_LATENESS,
74 PROP_QOS,
75 PROP_ASYNC,
76 PROP_TS_OFFSET,
77 PROP_ENABLE_LAST_SAMPLE,
78 PROP_LAST_SAMPLE,
79 PROP_BLOCKSIZE,
80 PROP_RENDER_DELAY,
81 PROP_THROTTLE_TIME,
82 PROP_MAX_BITRATE,
83 PROP_CONTRAST,
84 PROP_BRIGHTNESS,
85 PROP_HUE,
86 PROP_SATURATION,
87 };
88
89 enum
90 {
91 SIGNAL_0,
92 SIGNAL_CREATE_ELEMENT,
93 SIGNAL_LAST,
94 };
95
96 static guint gst_gl_sink_bin_signals[SIGNAL_LAST] = { 0, };
97
98 #define gst_gl_sink_bin_parent_class parent_class
99 G_DEFINE_TYPE_WITH_CODE (GstGLSinkBin, gst_gl_sink_bin,
100 GST_TYPE_BIN, G_IMPLEMENT_INTERFACE (GST_TYPE_VIDEO_OVERLAY,
101 gst_gl_sink_bin_video_overlay_init);
102 G_IMPLEMENT_INTERFACE (GST_TYPE_NAVIGATION,
103 gst_gl_sink_bin_navigation_interface_init);
104 G_IMPLEMENT_INTERFACE (GST_TYPE_COLOR_BALANCE,
105 gst_gl_sink_bin_color_balance_init)
106 GST_DEBUG_CATEGORY_INIT (gst_debug_gl_sink_bin, "glimagesink", 0,
107 "OpenGL Video Sink Bin"));
108
109 static void
gst_gl_sink_bin_class_init(GstGLSinkBinClass * klass)110 gst_gl_sink_bin_class_init (GstGLSinkBinClass * klass)
111 {
112 GObjectClass *gobject_class;
113 GstElementClass *element_class;
114 GstCaps *upload_caps;
115
116 gobject_class = (GObjectClass *) klass;
117 element_class = GST_ELEMENT_CLASS (klass);
118
119 element_class->change_state = gst_gl_sink_bin_change_state;
120
121 gobject_class->set_property = gst_gl_sink_bin_set_property;
122 gobject_class->get_property = gst_gl_sink_bin_get_property;
123 gobject_class->finalize = gst_gl_sink_bin_finalize;
124
125 g_object_class_install_property (gobject_class, PROP_FORCE_ASPECT_RATIO,
126 g_param_spec_boolean ("force-aspect-ratio",
127 "Force aspect ratio",
128 "When enabled, scaling will respect original aspect ratio", TRUE,
129 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
130 g_object_class_install_property (gobject_class, PROP_SINK,
131 g_param_spec_object ("sink",
132 "GL sink element",
133 "The GL sink chain to use",
134 GST_TYPE_ELEMENT,
135 GST_PARAM_MUTABLE_READY | G_PARAM_READWRITE |
136 G_PARAM_STATIC_STRINGS));
137
138 /* base sink */
139 g_object_class_install_property (gobject_class, PROP_SYNC,
140 g_param_spec_boolean ("sync", "Sync", "Sync on the clock", DEFAULT_SYNC,
141 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
142 g_object_class_install_property (gobject_class, PROP_MAX_LATENESS,
143 g_param_spec_int64 ("max-lateness", "Max Lateness",
144 "Maximum number of nanoseconds that a buffer can be late before it "
145 "is dropped (-1 unlimited)", -1, G_MAXINT64, DEFAULT_MAX_LATENESS,
146 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
147 g_object_class_install_property (gobject_class, PROP_QOS,
148 g_param_spec_boolean ("qos", "Qos",
149 "Generate Quality-of-Service events upstream", DEFAULT_QOS,
150 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
151 g_object_class_install_property (gobject_class, PROP_ASYNC,
152 g_param_spec_boolean ("async", "Async",
153 "Go asynchronously to PAUSED", DEFAULT_ASYNC,
154 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
155 g_object_class_install_property (gobject_class, PROP_TS_OFFSET,
156 g_param_spec_int64 ("ts-offset", "TS Offset",
157 "Timestamp offset in nanoseconds", G_MININT64, G_MAXINT64,
158 DEFAULT_TS_OFFSET, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
159 g_object_class_install_property (gobject_class, PROP_ENABLE_LAST_SAMPLE,
160 g_param_spec_boolean ("enable-last-sample", "Enable Last Buffer",
161 "Enable the last-sample property", DEFAULT_ENABLE_LAST_SAMPLE,
162 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
163 g_object_class_install_property (gobject_class, PROP_LAST_SAMPLE,
164 g_param_spec_boxed ("last-sample", "Last Sample",
165 "The last sample received in the sink", GST_TYPE_SAMPLE,
166 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
167 g_object_class_install_property (gobject_class, PROP_BLOCKSIZE,
168 g_param_spec_uint ("blocksize", "Block size",
169 "Size in bytes to pull per buffer (0 = default)", 0, G_MAXUINT,
170 DEFAULT_BLOCKSIZE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
171 g_object_class_install_property (gobject_class, PROP_RENDER_DELAY,
172 g_param_spec_uint64 ("render-delay", "Render Delay",
173 "Additional render delay of the sink in nanoseconds", 0, G_MAXUINT64,
174 DEFAULT_RENDER_DELAY, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
175 g_object_class_install_property (gobject_class, PROP_THROTTLE_TIME,
176 g_param_spec_uint64 ("throttle-time", "Throttle time",
177 "The time to keep between rendered buffers (0 = disabled)", 0,
178 G_MAXUINT64, DEFAULT_THROTTLE_TIME,
179 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
180 g_object_class_install_property (gobject_class, PROP_MAX_BITRATE,
181 g_param_spec_uint64 ("max-bitrate", "Max Bitrate",
182 "The maximum bits per second to render (0 = disabled)", 0,
183 G_MAXUINT64, DEFAULT_MAX_BITRATE,
184 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
185
186 /* colorbalance */
187 g_object_class_install_property (gobject_class, PROP_CONTRAST,
188 g_param_spec_double ("contrast", "Contrast", "contrast",
189 0.0, 2.0, DEFAULT_PROP_CONTRAST,
190 GST_PARAM_CONTROLLABLE | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
191 g_object_class_install_property (gobject_class, PROP_BRIGHTNESS,
192 g_param_spec_double ("brightness", "Brightness", "brightness", -1.0, 1.0,
193 DEFAULT_PROP_BRIGHTNESS,
194 GST_PARAM_CONTROLLABLE | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
195 g_object_class_install_property (gobject_class, PROP_HUE,
196 g_param_spec_double ("hue", "Hue", "hue", -1.0, 1.0, DEFAULT_PROP_HUE,
197 GST_PARAM_CONTROLLABLE | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
198 g_object_class_install_property (gobject_class, PROP_SATURATION,
199 g_param_spec_double ("saturation", "Saturation", "saturation", 0.0, 2.0,
200 DEFAULT_PROP_SATURATION,
201 GST_PARAM_CONTROLLABLE | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
202
203 /**
204 * GstGLSinkBin::create-element:
205 * @object: the #GstGLSinkBin
206 *
207 * Will be emitted when we need the processing element/s that this bin will use
208 *
209 * Returns: a new #GstElement
210 */
211 gst_gl_sink_bin_signals[SIGNAL_CREATE_ELEMENT] =
212 g_signal_new ("create-element", G_TYPE_FROM_CLASS (klass),
213 G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_generic,
214 GST_TYPE_ELEMENT, 0);
215
216 gst_element_class_set_metadata (element_class,
217 "GL Sink Bin", "Sink/Video",
218 "Infrastructure to process GL textures",
219 "Matthew Waters <matthew@centricular.com>");
220
221 upload_caps = gst_gl_upload_get_input_template_caps ();
222 gst_element_class_add_pad_template (element_class,
223 gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, upload_caps));
224 gst_caps_unref (upload_caps);
225 }
226
227 static void
gst_gl_sink_bin_init(GstGLSinkBin * self)228 gst_gl_sink_bin_init (GstGLSinkBin * self)
229 {
230 gboolean res = TRUE;
231 GstPad *pad;
232
233 self->upload = gst_element_factory_make ("glupload", NULL);
234 self->convert = gst_element_factory_make ("glcolorconvert", NULL);
235 self->balance = gst_element_factory_make ("glcolorbalance", NULL);
236
237 res &= gst_bin_add (GST_BIN (self), self->upload);
238 res &= gst_bin_add (GST_BIN (self), self->convert);
239 res &= gst_bin_add (GST_BIN (self), self->balance);
240
241 res &= gst_element_link_pads (self->upload, "src", self->convert, "sink");
242 res &= gst_element_link_pads (self->convert, "src", self->balance, "sink");
243
244 pad = gst_element_get_static_pad (self->upload, "sink");
245 if (!pad) {
246 res = FALSE;
247 } else {
248 GST_DEBUG_OBJECT (self, "setting target sink pad %" GST_PTR_FORMAT, pad);
249 self->sinkpad = gst_ghost_pad_new ("sink", pad);
250 gst_element_add_pad (GST_ELEMENT_CAST (self), self->sinkpad);
251 gst_object_unref (pad);
252 }
253
254 #define ADD_BINDING(obj,ref,prop) \
255 gst_object_add_control_binding (GST_OBJECT (obj), \
256 gst_proxy_control_binding_new (GST_OBJECT (obj), prop, \
257 GST_OBJECT (ref), prop));
258 ADD_BINDING (self->balance, self, "contrast");
259 ADD_BINDING (self->balance, self, "brightness");
260 ADD_BINDING (self->balance, self, "hue");
261 ADD_BINDING (self->balance, self, "saturation");
262 #undef ADD_BINDING
263
264 if (!res) {
265 GST_WARNING_OBJECT (self, "Failed to add/connect the necessary machinery");
266 }
267 }
268
269 static void
gst_gl_sink_bin_finalize(GObject * object)270 gst_gl_sink_bin_finalize (GObject * object)
271 {
272 GstGLSinkBin *self = GST_GL_SINK_BIN (object);
273
274 if (self->sink)
275 gst_object_unref (self->sink);
276
277 G_OBJECT_CLASS (parent_class)->finalize (object);
278 }
279
280 static gboolean
_connect_sink_element(GstGLSinkBin * self)281 _connect_sink_element (GstGLSinkBin * self)
282 {
283 gst_object_set_name (GST_OBJECT (self->sink), "sink");
284
285 if (gst_bin_add (GST_BIN (self), self->sink) &&
286 gst_element_link_pads (self->balance, "src", self->sink, "sink"))
287 return TRUE;
288
289 GST_ERROR_OBJECT (self, "Failed to link sink element into the pipeline");
290 return FALSE;
291 }
292
293 /*
294 * @sink: (transfer full):
295 */
296 static gboolean
gst_gl_sink_bin_set_sink(GstGLSinkBin * self,GstElement * sink)297 gst_gl_sink_bin_set_sink (GstGLSinkBin * self, GstElement * sink)
298 {
299 g_return_val_if_fail (GST_IS_ELEMENT (sink), FALSE);
300
301 if (self->sink) {
302 gst_element_set_locked_state (self->sink, TRUE);
303 gst_bin_remove (GST_BIN (self), self->sink);
304 gst_element_set_state (self->sink, GST_STATE_NULL);
305 gst_object_unref (self->sink);
306 self->sink = NULL;
307 }
308 self->sink = sink;
309
310 gst_object_ref_sink (sink);
311
312 if (sink && !_connect_sink_element (self)) {
313 gst_object_unref (self->sink);
314 self->sink = NULL;
315 return FALSE;
316 }
317
318 return TRUE;
319 }
320
321 void
gst_gl_sink_bin_finish_init_with_element(GstGLSinkBin * self,GstElement * element)322 gst_gl_sink_bin_finish_init_with_element (GstGLSinkBin * self,
323 GstElement * element)
324 {
325 gst_gl_sink_bin_set_sink (self, element);
326 }
327
328 void
gst_gl_sink_bin_finish_init(GstGLSinkBin * self)329 gst_gl_sink_bin_finish_init (GstGLSinkBin * self)
330 {
331 GstGLSinkBinClass *klass = GST_GL_SINK_BIN_GET_CLASS (self);
332 GstElement *element = NULL;
333
334 if (klass->create_element)
335 element = klass->create_element ();
336
337 if (element)
338 gst_gl_sink_bin_finish_init_with_element (self, element);
339 }
340
341 static void
gst_gl_sink_bin_set_property(GObject * object,guint prop_id,const GValue * value,GParamSpec * pspec)342 gst_gl_sink_bin_set_property (GObject * object, guint prop_id,
343 const GValue * value, GParamSpec * pspec)
344 {
345 GstGLSinkBin *self = GST_GL_SINK_BIN (object);
346 GParamSpec *sink_pspec;
347
348 switch (prop_id) {
349 case PROP_SINK:
350 gst_gl_sink_bin_set_sink (self, g_value_get_object (value));
351 break;
352 case PROP_CONTRAST:
353 case PROP_BRIGHTNESS:
354 case PROP_HUE:
355 case PROP_SATURATION:
356 if (self->balance)
357 g_object_set_property (G_OBJECT (self->balance), pspec->name, value);
358 break;
359 default:
360 if (self->sink) {
361 sink_pspec =
362 g_object_class_find_property (G_OBJECT_GET_CLASS (self->sink),
363 pspec->name);
364 if (sink_pspec
365 && G_PARAM_SPEC_TYPE (sink_pspec) == G_PARAM_SPEC_TYPE (pspec)) {
366 g_object_set_property (G_OBJECT (self->sink), pspec->name, value);
367 } else {
368 GST_INFO ("Failed to set unmatched property %s", pspec->name);
369 }
370 }
371 break;
372 }
373 }
374
375 static void
gst_gl_sink_bin_get_property(GObject * object,guint prop_id,GValue * value,GParamSpec * pspec)376 gst_gl_sink_bin_get_property (GObject * object, guint prop_id,
377 GValue * value, GParamSpec * pspec)
378 {
379 GstGLSinkBin *self = GST_GL_SINK_BIN (object);
380
381 switch (prop_id) {
382 case PROP_SINK:
383 g_value_set_object (value, self->sink);
384 break;
385 case PROP_CONTRAST:
386 case PROP_BRIGHTNESS:
387 case PROP_HUE:
388 case PROP_SATURATION:
389 if (self->balance)
390 g_object_get_property (G_OBJECT (self->balance), pspec->name, value);
391 break;
392 default:
393 if (self->sink)
394 g_object_get_property (G_OBJECT (self->sink), pspec->name, value);
395 break;
396 }
397 }
398
399 static GstStateChangeReturn
gst_gl_sink_bin_change_state(GstElement * element,GstStateChange transition)400 gst_gl_sink_bin_change_state (GstElement * element, GstStateChange transition)
401 {
402 GstGLSinkBin *self = GST_GL_SINK_BIN (element);
403 GstGLSinkBinClass *klass = GST_GL_SINK_BIN_GET_CLASS (self);
404 GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
405
406 GST_DEBUG ("changing state: %s => %s",
407 gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)),
408 gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition)));
409
410 switch (transition) {
411 case GST_STATE_CHANGE_NULL_TO_READY:
412 if (!self->sink) {
413 if (klass->create_element)
414 self->sink = klass->create_element ();
415
416 if (!self->sink) {
417 g_signal_emit (element,
418 gst_gl_sink_bin_signals[SIGNAL_CREATE_ELEMENT], 0, &self->sink);
419 if (self->sink && g_object_is_floating (self->sink))
420 gst_object_ref_sink (self->sink);
421 }
422
423 if (!self->sink) {
424 GST_ERROR_OBJECT (element, "Failed to retrieve element");
425 return GST_STATE_CHANGE_FAILURE;
426 }
427 if (!_connect_sink_element (self))
428 return GST_STATE_CHANGE_FAILURE;
429 }
430 break;
431 default:
432 break;
433 }
434
435 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
436 if (ret == GST_STATE_CHANGE_FAILURE)
437 return ret;
438
439 switch (transition) {
440 default:
441 break;
442 }
443
444 return ret;
445 }
446
447 static void
gst_gl_sink_bin_navigation_send_event(GstNavigation * navigation,GstStructure * structure)448 gst_gl_sink_bin_navigation_send_event (GstNavigation * navigation, GstStructure
449 * structure)
450 {
451 GstGLSinkBin *self = GST_GL_SINK_BIN (navigation);
452 GstElement *nav =
453 gst_bin_get_by_interface (GST_BIN (self), GST_TYPE_NAVIGATION);
454
455 if (nav) {
456 gst_navigation_send_event (GST_NAVIGATION (nav), structure);
457 structure = NULL;
458 gst_object_unref (nav);
459 } else {
460 GstEvent *event = gst_event_new_navigation (structure);
461 structure = NULL;
462 gst_element_send_event (GST_ELEMENT (self), event);
463 }
464 }
465
466 static void
gst_gl_sink_bin_navigation_interface_init(gpointer g_iface,gpointer g_iface_data)467 gst_gl_sink_bin_navigation_interface_init (gpointer g_iface,
468 gpointer g_iface_data)
469 {
470 GstNavigationInterface *iface = (GstNavigationInterface *) g_iface;
471 iface->send_event = gst_gl_sink_bin_navigation_send_event;
472 }
473
474 static void
gst_gl_sink_bin_overlay_expose(GstVideoOverlay * overlay)475 gst_gl_sink_bin_overlay_expose (GstVideoOverlay * overlay)
476 {
477 GstGLSinkBin *self = GST_GL_SINK_BIN (overlay);
478 GstVideoOverlay *overlay_element = NULL;
479
480 overlay_element =
481 GST_VIDEO_OVERLAY (gst_bin_get_by_interface (GST_BIN (self),
482 GST_TYPE_VIDEO_OVERLAY));
483
484 if (overlay_element) {
485 gst_video_overlay_expose (overlay_element);
486 gst_object_unref (overlay_element);
487 }
488 }
489
490 static void
gst_gl_sink_bin_overlay_handle_events(GstVideoOverlay * overlay,gboolean handle_events)491 gst_gl_sink_bin_overlay_handle_events (GstVideoOverlay * overlay,
492 gboolean handle_events)
493 {
494 GstGLSinkBin *self = GST_GL_SINK_BIN (overlay);
495 GstVideoOverlay *overlay_element = NULL;
496
497 overlay_element =
498 GST_VIDEO_OVERLAY (gst_bin_get_by_interface (GST_BIN (self),
499 GST_TYPE_VIDEO_OVERLAY));
500
501 if (overlay_element) {
502 gst_video_overlay_handle_events (overlay_element, handle_events);
503 gst_object_unref (overlay_element);
504 }
505 }
506
507 static void
gst_gl_sink_bin_overlay_set_render_rectangle(GstVideoOverlay * overlay,gint x,gint y,gint width,gint height)508 gst_gl_sink_bin_overlay_set_render_rectangle (GstVideoOverlay * overlay, gint x,
509 gint y, gint width, gint height)
510 {
511 GstGLSinkBin *self = GST_GL_SINK_BIN (overlay);
512 GstVideoOverlay *overlay_element = NULL;
513
514 overlay_element =
515 GST_VIDEO_OVERLAY (gst_bin_get_by_interface (GST_BIN (self),
516 GST_TYPE_VIDEO_OVERLAY));
517
518 if (overlay_element) {
519 gst_video_overlay_set_render_rectangle (overlay_element, x, y, width,
520 height);
521 gst_object_unref (overlay_element);
522 }
523 }
524
525 static void
gst_gl_sink_bin_overlay_set_window_handle(GstVideoOverlay * overlay,guintptr handle)526 gst_gl_sink_bin_overlay_set_window_handle (GstVideoOverlay * overlay,
527 guintptr handle)
528 {
529 GstGLSinkBin *self = GST_GL_SINK_BIN (overlay);
530 GstVideoOverlay *overlay_element = NULL;
531
532 overlay_element =
533 GST_VIDEO_OVERLAY (gst_bin_get_by_interface (GST_BIN (self),
534 GST_TYPE_VIDEO_OVERLAY));
535
536 if (overlay_element) {
537 gst_video_overlay_set_window_handle (overlay_element, handle);
538 gst_object_unref (overlay_element);
539 }
540 }
541
542 static void
gst_gl_sink_bin_video_overlay_init(gpointer g_iface,gpointer g_iface_data)543 gst_gl_sink_bin_video_overlay_init (gpointer g_iface, gpointer g_iface_data)
544 {
545 GstVideoOverlayInterface *iface = (GstVideoOverlayInterface *) g_iface;
546 iface->expose = gst_gl_sink_bin_overlay_expose;
547 iface->handle_events = gst_gl_sink_bin_overlay_handle_events;
548 iface->set_render_rectangle = gst_gl_sink_bin_overlay_set_render_rectangle;
549 iface->set_window_handle = gst_gl_sink_bin_overlay_set_window_handle;
550 }
551
552 static const GList *
gst_gl_sink_bin_color_balance_list_channels(GstColorBalance * balance)553 gst_gl_sink_bin_color_balance_list_channels (GstColorBalance * balance)
554 {
555 GstGLSinkBin *self = GST_GL_SINK_BIN (balance);
556 GstColorBalance *balance_element = NULL;
557 const GList *list = NULL;
558
559 balance_element =
560 GST_COLOR_BALANCE (gst_bin_get_by_interface (GST_BIN (self),
561 GST_TYPE_COLOR_BALANCE));
562
563 if (balance_element) {
564 list = gst_color_balance_list_channels (balance_element);
565 gst_object_unref (balance_element);
566 }
567
568 return list;
569 }
570
571 static void
gst_gl_sink_bin_color_balance_set_value(GstColorBalance * balance,GstColorBalanceChannel * channel,gint value)572 gst_gl_sink_bin_color_balance_set_value (GstColorBalance * balance,
573 GstColorBalanceChannel * channel, gint value)
574 {
575 GstGLSinkBin *self = GST_GL_SINK_BIN (balance);
576 GstColorBalance *balance_element = NULL;
577
578 balance_element =
579 GST_COLOR_BALANCE (gst_bin_get_by_interface (GST_BIN (self),
580 GST_TYPE_COLOR_BALANCE));
581
582 if (balance_element) {
583 gst_color_balance_set_value (balance_element, channel, value);
584 gst_object_unref (balance_element);
585 }
586 }
587
588 static gint
gst_gl_sink_bin_color_balance_get_value(GstColorBalance * balance,GstColorBalanceChannel * channel)589 gst_gl_sink_bin_color_balance_get_value (GstColorBalance * balance,
590 GstColorBalanceChannel * channel)
591 {
592 GstGLSinkBin *self = GST_GL_SINK_BIN (balance);
593 GstColorBalance *balance_element = NULL;
594 gint val = 0;
595
596 balance_element =
597 GST_COLOR_BALANCE (gst_bin_get_by_interface (GST_BIN (self),
598 GST_TYPE_COLOR_BALANCE));
599
600 if (balance_element) {
601 val = gst_color_balance_get_value (balance_element, channel);
602 gst_object_unref (balance_element);
603 }
604
605 return val;
606 }
607
608 static GstColorBalanceType
gst_gl_sink_bin_color_balance_get_balance_type(GstColorBalance * balance)609 gst_gl_sink_bin_color_balance_get_balance_type (GstColorBalance * balance)
610 {
611 GstGLSinkBin *self = GST_GL_SINK_BIN (balance);
612 GstColorBalance *balance_element = NULL;
613 GstColorBalanceType type = 0;
614
615 balance_element =
616 GST_COLOR_BALANCE (gst_bin_get_by_interface (GST_BIN (self),
617 GST_TYPE_COLOR_BALANCE));
618
619 if (balance_element) {
620 type = gst_color_balance_get_balance_type (balance_element);
621 gst_object_unref (balance_element);
622 }
623
624 return type;
625 }
626
627 static void
gst_gl_sink_bin_color_balance_init(gpointer g_iface,gpointer g_iface_data)628 gst_gl_sink_bin_color_balance_init (gpointer g_iface, gpointer g_iface_data)
629 {
630 GstColorBalanceInterface *iface = (GstColorBalanceInterface *) g_iface;
631
632 iface->list_channels = gst_gl_sink_bin_color_balance_list_channels;
633 iface->set_value = gst_gl_sink_bin_color_balance_set_value;
634 iface->get_value = gst_gl_sink_bin_color_balance_get_value;
635 iface->get_balance_type = gst_gl_sink_bin_color_balance_get_balance_type;
636 }
637