3 * Copyright (C) 2003 Julien Moutte <julien@moutte.net>
4 * Copyright (C) 2005,2006,2007 David A. Schleef <ds@schleef.org>
5 * Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
6 * Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
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
20 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
21 * Boston, MA 02110-1301, USA.
25 * SECTION:element-glimagesink
28 * glimagesink renders video frames to a drawable on a local or remote
29 * display using OpenGL. This element can receive a Window ID from the
30 * application through the VideoOverlay interface and will then render video
31 * frames in this drawable.
32 * If no Window ID was provided by the application, the element will
33 * create its own internal window and render into it.
35 * See the #GstGLDisplay documentation for a list of environment variables that
36 * can override window/platform detection.
40 * Depends on the driver, OpenGL handles hardware accelerated
41 * scaling of video frames. This means that the element will just accept
42 * incoming video frames no matter their geometry and will then put them to the
43 * drawable scaling them on the fly. Using the #GstGLImageSink:force-aspect-ratio
44 * property it is possible to enforce scaling with a constant aspect ratio,
45 * which means drawing black borders around the video frame.
49 * Through the gl thread, glimagesink handle some events coming from the drawable
50 * to manage its appearance even when the data is not flowing (GST_STATE_PAUSED).
51 * That means that even when the element is paused, it will receive expose events
52 * from the drawable and draw the latest frame with correct borders/aspect-ratio.
56 * gst-launch-1.0 -v videotestsrc ! video/x-raw ! glimagesink
57 * ]| A pipeline to test hardware scaling.
58 * No special opengl extension is used in this pipeline, that's why it should work
59 * with OpenGL >= 1.1. That's the case if you are using the MESA3D driver v1.3.
61 * gst-launch-1.0 -v videotestsrc ! video/x-raw,format=I420 ! glimagesink
62 * ]| A pipeline to test hardware scaling and hardware colorspace conversion.
63 * When your driver supports GLSL (OpenGL Shading Language needs OpenGL >= 2.1),
64 * the 4 following format YUY2, UYVY, I420, YV12 and AYUV are converted to RGB32
65 * through some fragment shaders and using one framebuffer (FBO extension OpenGL >= 1.4).
66 * If your driver does not support GLSL but supports MESA_YCbCr extension then
67 * the you can use YUY2 and UYVY. In this case the colorspace conversion is automatically
68 * made when loading the texture and therefore no framebuffer is used.
70 * gst-launch-1.0 -v gltestsrc ! glimagesink
71 * ]| A pipeline 100% OpenGL.
72 * No special opengl extension is used in this pipeline, that's why it should work
73 * with OpenGL >= 1.1. That's the case if you are using the MESA3D driver v1.3.
75 * gst-plugins-bas/tests/examples/gl/generic/cube
76 * ]| The graphic FPS scene can be greater than the input video FPS.
77 * The graphic scene can be written from a client code through the
78 * two glfilterapp properties.
86 #include <gst/video/videooverlay.h>
87 #include <gst/video/navigation.h>
88 #include <gst/video/gstvideoaffinetransformationmeta.h>
90 #include "gstglimagesink.h"
91 #include "gstglsinkbin.h"
92 #include "gstglutils.h"
94 #include <gst/gl/gstglviewconvert.h>
96 GST_DEBUG_CATEGORY (gst_debug_glimage_sink);
97 #define GST_CAT_DEFAULT gst_debug_glimage_sink
99 #define DEFAULT_SHOW_PREROLL_FRAME TRUE
100 #define DEFAULT_HANDLE_EVENTS TRUE
101 #define DEFAULT_FORCE_ASPECT_RATIO TRUE
102 #define DEFAULT_IGNORE_ALPHA TRUE
104 #define DEFAULT_MULTIVIEW_MODE GST_VIDEO_MULTIVIEW_MODE_MONO
105 #define DEFAULT_MULTIVIEW_FLAGS GST_VIDEO_MULTIVIEW_FLAGS_NONE
106 #define DEFAULT_MULTIVIEW_DOWNMIX GST_GL_STEREO_DOWNMIX_ANAGLYPH_GREEN_MAGENTA_DUBOIS
108 typedef GstGLSinkBin GstGLImageSinkBin;
109 typedef GstGLSinkBinClass GstGLImageSinkBinClass;
111 G_DEFINE_TYPE (GstGLImageSinkBin, gst_gl_image_sink_bin, GST_TYPE_GL_SINK_BIN);
116 PROP_BIN_ROTATE_METHOD,
117 PROP_BIN_FORCE_ASPECT_RATIO,
118 PROP_BIN_PIXEL_ASPECT_RATIO,
119 PROP_BIN_HANDLE_EVENTS,
121 PROP_BIN_IGNORE_ALPHA,
122 PROP_BIN_SHOW_PREROLL_FRAME,
123 PROP_BIN_OUTPUT_MULTIVIEW_LAYOUT,
124 PROP_BIN_OUTPUT_MULTIVIEW_FLAGS,
125 PROP_BIN_OUTPUT_MULTIVIEW_DOWNMIX_MODE
131 SIGNAL_BIN_CLIENT_DRAW,
132 SIGNAL_BIN_CLIENT_RESHAPE,
136 static guint gst_gl_image_sink_bin_signals[SIGNAL_BIN_LAST] = { 0 };
139 gst_gl_image_sink_bin_set_property (GObject * object, guint prop_id,
140 const GValue * value, GParamSpec * param_spec)
142 g_object_set_property (G_OBJECT (GST_GL_SINK_BIN (object)->sink),
143 param_spec->name, value);
147 gst_gl_image_sink_bin_get_property (GObject * object, guint prop_id,
148 GValue * value, GParamSpec * param_spec)
150 g_object_get_property (G_OBJECT (GST_GL_SINK_BIN (object)->sink),
151 param_spec->name, value);
155 _on_client_reshape (GstGLImageSink * sink, GstGLContext * context,
156 guint width, guint height, gpointer data)
160 g_signal_emit (data, gst_gl_image_sink_bin_signals[SIGNAL_BIN_CLIENT_RESHAPE],
161 0, context, width, height, &ret);
167 _on_client_draw (GstGLImageSink * sink, GstGLContext * context,
168 GstSample * sample, gpointer data)
172 g_signal_emit (data, gst_gl_image_sink_bin_signals[SIGNAL_BIN_CLIENT_DRAW], 0,
173 context, sample, &ret);
178 #define DEFAULT_ROTATE_METHOD GST_GL_ROTATE_METHOD_IDENTITY
180 #define GST_TYPE_GL_ROTATE_METHOD (gst_gl_rotate_method_get_type())
182 static const GEnumValue rotate_methods[] = {
183 {GST_GL_ROTATE_METHOD_IDENTITY, "Identity (no rotation)", "none"},
184 {GST_GL_ROTATE_METHOD_90R, "Rotate clockwise 90 degrees", "clockwise"},
185 {GST_GL_ROTATE_METHOD_180, "Rotate 180 degrees", "rotate-180"},
186 {GST_GL_ROTATE_METHOD_90L, "Rotate counter-clockwise 90 degrees",
188 {GST_GL_ROTATE_METHOD_FLIP_HORIZ, "Flip horizontally", "horizontal-flip"},
189 {GST_GL_ROTATE_METHOD_FLIP_VERT, "Flip vertically", "vertical-flip"},
190 {GST_GL_ROTATE_METHOD_FLIP_UL_LR,
191 "Flip across upper left/lower right diagonal", "upper-left-diagonal"},
192 {GST_GL_ROTATE_METHOD_FLIP_UR_LL,
193 "Flip across upper right/lower left diagonal", "upper-right-diagonal"},
194 {GST_GL_ROTATE_METHOD_AUTO,
195 "Select rotate method based on image-orientation tag", "automatic"},
200 gst_gl_rotate_method_get_type (void)
202 static GType rotate_method_type = 0;
204 if (!rotate_method_type) {
205 rotate_method_type = g_enum_register_static ("GstGLRotateMethod",
208 return rotate_method_type;
212 gst_gl_image_sink_bin_init (GstGLImageSinkBin * self)
214 GstGLImageSink *sink = g_object_new (GST_TYPE_GLIMAGE_SINK, NULL);
216 g_signal_connect (sink, "client-reshape", (GCallback) _on_client_reshape,
218 g_signal_connect (sink, "client-draw", (GCallback) _on_client_draw, self);
220 gst_gl_sink_bin_finish_init_with_element (GST_GL_SINK_BIN (self),
225 gst_gl_image_sink_bin_class_init (GstGLImageSinkBinClass * klass)
227 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
229 gobject_class->get_property = gst_gl_image_sink_bin_get_property;
230 gobject_class->set_property = gst_gl_image_sink_bin_set_property;
233 g_object_class_install_property (gobject_class, PROP_BIN_ROTATE_METHOD,
234 g_param_spec_enum ("rotate-method",
237 GST_TYPE_GL_ROTATE_METHOD, DEFAULT_ROTATE_METHOD,
238 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
239 g_object_class_install_property (gobject_class, PROP_BIN_FORCE_ASPECT_RATIO,
240 g_param_spec_boolean ("force-aspect-ratio",
241 "Force aspect ratio",
242 "When enabled, scaling will respect original aspect ratio",
243 DEFAULT_FORCE_ASPECT_RATIO,
244 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
245 g_object_class_install_property (gobject_class, PROP_BIN_HANDLE_EVENTS,
246 g_param_spec_boolean ("handle-events", "Handle XEvents",
247 "When enabled, XEvents will be selected and handled",
248 DEFAULT_HANDLE_EVENTS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
249 g_object_class_install_property (gobject_class, PROP_BIN_IGNORE_ALPHA,
250 g_param_spec_boolean ("ignore-alpha", "Ignore Alpha",
251 "When enabled, alpha will be ignored and converted to black",
252 DEFAULT_IGNORE_ALPHA, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
253 g_object_class_install_property (gobject_class, PROP_BIN_CONTEXT,
254 g_param_spec_object ("context", "OpenGL context", "Get OpenGL context",
255 GST_TYPE_GL_CONTEXT, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
256 g_object_class_install_property (gobject_class, PROP_BIN_PIXEL_ASPECT_RATIO,
257 gst_param_spec_fraction ("pixel-aspect-ratio", "Pixel Aspect Ratio",
258 "The pixel aspect ratio of the device", 0, 1, G_MAXINT, 1, 1, 1,
259 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
262 g_object_class_install_property (gobject_class, PROP_BIN_SHOW_PREROLL_FRAME,
263 g_param_spec_boolean ("show-preroll-frame", "Show preroll frame",
264 "Whether to render video frames during preroll",
265 DEFAULT_SHOW_PREROLL_FRAME,
266 G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
268 g_object_class_install_property (gobject_class,
269 PROP_BIN_OUTPUT_MULTIVIEW_LAYOUT,
270 g_param_spec_enum ("output-multiview-mode", "Output Multiview Mode",
271 "Choose output mode for multiview/3D video",
272 GST_TYPE_VIDEO_MULTIVIEW_MODE, DEFAULT_MULTIVIEW_MODE,
273 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
274 g_object_class_install_property (gobject_class,
275 PROP_BIN_OUTPUT_MULTIVIEW_FLAGS,
276 g_param_spec_flags ("output-multiview-flags", "Output Multiview Flags",
277 "Output multiview layout modifier flags",
278 GST_TYPE_VIDEO_MULTIVIEW_FLAGS, DEFAULT_MULTIVIEW_FLAGS,
279 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
280 g_object_class_install_property (gobject_class,
281 PROP_BIN_OUTPUT_MULTIVIEW_DOWNMIX_MODE,
282 g_param_spec_enum ("output-multiview-downmix-mode",
283 "Mode for mono downmixed output",
284 "Output anaglyph type to generate when downmixing to mono",
285 GST_TYPE_GL_STEREO_DOWNMIX_MODE_TYPE, DEFAULT_MULTIVIEW_DOWNMIX,
286 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
287 gst_gl_image_sink_bin_signals[SIGNAL_BIN_CLIENT_DRAW] =
288 g_signal_new ("client-draw", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
289 0, NULL, NULL, g_cclosure_marshal_generic, G_TYPE_BOOLEAN, 2,
290 GST_TYPE_GL_CONTEXT, GST_TYPE_SAMPLE);
292 gst_gl_image_sink_bin_signals[SIGNAL_BIN_CLIENT_RESHAPE] =
293 g_signal_new ("client-reshape", G_TYPE_FROM_CLASS (klass),
294 G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_generic,
295 G_TYPE_BOOLEAN, 3, GST_TYPE_GL_CONTEXT, G_TYPE_UINT, G_TYPE_UINT);
298 #define GST_GLIMAGE_SINK_GET_LOCK(glsink) \
299 (GST_GLIMAGE_SINK(glsink)->drawing_lock)
300 #define GST_GLIMAGE_SINK_LOCK(glsink) \
301 (g_mutex_lock(&GST_GLIMAGE_SINK_GET_LOCK (glsink)))
302 #define GST_GLIMAGE_SINK_UNLOCK(glsink) \
303 (g_mutex_unlock(&GST_GLIMAGE_SINK_GET_LOCK (glsink)))
305 #define USING_OPENGL(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL, 1, 0))
306 #define USING_OPENGL3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL3, 3, 1))
307 #define USING_GLES(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES, 1, 0))
308 #define USING_GLES2(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 2, 0))
309 #define USING_GLES3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 3, 0))
311 #define SUPPORTED_GL_APIS GST_GL_API_OPENGL | GST_GL_API_GLES2 | GST_GL_API_OPENGL3
313 static void gst_glimage_sink_thread_init_redisplay (GstGLImageSink * gl_sink);
314 static void gst_glimage_sink_cleanup_glthread (GstGLImageSink * gl_sink);
315 static void gst_glimage_sink_on_close (GstGLImageSink * gl_sink);
316 static void gst_glimage_sink_on_resize (GstGLImageSink * gl_sink,
317 gint width, gint height);
318 static void gst_glimage_sink_on_draw (GstGLImageSink * gl_sink);
319 static gboolean gst_glimage_sink_redisplay (GstGLImageSink * gl_sink);
321 static void gst_glimage_sink_finalize (GObject * object);
322 static void gst_glimage_sink_set_property (GObject * object, guint prop_id,
323 const GValue * value, GParamSpec * param_spec);
324 static void gst_glimage_sink_get_property (GObject * object, guint prop_id,
325 GValue * value, GParamSpec * param_spec);
327 static gboolean gst_glimage_sink_event (GstBaseSink * sink, GstEvent * event);
328 static gboolean gst_glimage_sink_query (GstBaseSink * bsink, GstQuery * query);
329 static void gst_glimage_sink_set_context (GstElement * element,
330 GstContext * context);
332 static GstStateChangeReturn
333 gst_glimage_sink_change_state (GstElement * element, GstStateChange transition);
335 static void gst_glimage_sink_get_times (GstBaseSink * bsink, GstBuffer * buf,
336 GstClockTime * start, GstClockTime * end);
337 static gboolean gst_glimage_sink_set_caps (GstBaseSink * bsink, GstCaps * caps);
338 static GstCaps *gst_glimage_sink_get_caps (GstBaseSink * bsink,
340 static GstFlowReturn gst_glimage_sink_prepare (GstBaseSink * bsink,
342 static GstFlowReturn gst_glimage_sink_show_frame (GstVideoSink * bsink,
344 static gboolean gst_glimage_sink_propose_allocation (GstBaseSink * bsink,
347 static void gst_glimage_sink_video_overlay_init (GstVideoOverlayInterface *
349 static void gst_glimage_sink_set_window_handle (GstVideoOverlay * overlay,
351 static void gst_glimage_sink_expose (GstVideoOverlay * overlay);
352 static void gst_glimage_sink_set_render_rectangle (GstVideoOverlay * overlay,
353 gint x, gint y, gint width, gint height);
354 static void gst_glimage_sink_handle_events (GstVideoOverlay * overlay,
355 gboolean handle_events);
356 static gboolean update_output_format (GstGLImageSink * glimage_sink);
358 #define GST_GL_SINK_CAPS \
359 "video/x-raw(" GST_CAPS_FEATURE_MEMORY_GL_MEMORY "), " \
360 "format = (string) RGBA, " \
361 "width = " GST_VIDEO_SIZE_RANGE ", " \
362 "height = " GST_VIDEO_SIZE_RANGE ", " \
363 "framerate = " GST_VIDEO_FPS_RANGE ", " \
364 "texture-target = (string) { 2D, external-oes } " \
366 "video/x-raw(" GST_CAPS_FEATURE_MEMORY_GL_MEMORY "," \
367 GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION "), " \
368 "format = (string) RGBA, " \
369 "width = " GST_VIDEO_SIZE_RANGE ", " \
370 "height = " GST_VIDEO_SIZE_RANGE ", " \
371 "framerate = " GST_VIDEO_FPS_RANGE ", " \
372 "texture-target = (string) { 2D, external-oes } "
374 static GstStaticPadTemplate gst_glimage_sink_template =
375 GST_STATIC_PAD_TEMPLATE ("sink",
378 GST_STATIC_CAPS (GST_GL_SINK_CAPS));
385 PROP_FORCE_ASPECT_RATIO,
386 PROP_PIXEL_ASPECT_RATIO,
390 PROP_OUTPUT_MULTIVIEW_LAYOUT,
391 PROP_OUTPUT_MULTIVIEW_FLAGS,
392 PROP_OUTPUT_MULTIVIEW_DOWNMIX_MODE
399 CLIENT_RESHAPE_SIGNAL,
403 static guint gst_glimage_sink_signals[LAST_SIGNAL] = { 0 };
406 _display_size_to_stream_size (GstGLImageSink * gl_sink, gdouble x,
407 gdouble y, gdouble * stream_x, gdouble * stream_y)
409 gdouble stream_width, stream_height;
411 stream_width = (gdouble) GST_VIDEO_INFO_WIDTH (&gl_sink->out_info);
412 stream_height = (gdouble) GST_VIDEO_INFO_HEIGHT (&gl_sink->out_info);
414 /* from display coordinates to stream coordinates */
415 if (gl_sink->display_rect.w > 0)
417 (x - gl_sink->display_rect.x) / gl_sink->display_rect.w * stream_width;
421 /* clip to stream size */
424 if (*stream_x > GST_VIDEO_INFO_WIDTH (&gl_sink->out_info))
425 *stream_x = GST_VIDEO_INFO_WIDTH (&gl_sink->out_info);
427 /* same for y-axis */
428 if (gl_sink->display_rect.h > 0)
430 (y - gl_sink->display_rect.y) / gl_sink->display_rect.h * stream_height;
436 if (*stream_y > GST_VIDEO_INFO_HEIGHT (&gl_sink->out_info))
437 *stream_y = GST_VIDEO_INFO_HEIGHT (&gl_sink->out_info);
439 GST_TRACE ("transform %fx%f into %fx%f", x, y, *stream_x, *stream_y);
443 static const gfloat clockwise_matrix[] = {
444 0.0f, -1.0f, 0.0f, 0.0f,
445 1.0f, 0.0f, 0.0f, 0.0f,
446 0.0f, 0.0f, 1.0f, 0.0f,
447 0.0f, 0.0f, 0.0f, 1.0f,
451 static const gfloat clockwise_180_matrix[] = {
452 -1.0f, 0.0f, 0.0f, 0.0f,
453 0.0f, -1.0f, 0.0f, 0.0f,
454 0.0f, 0.0f, 1.0f, 0.0f,
455 0.0f, 0.0f, 0.0f, 1.0f,
459 static const gfloat counterclockwise_matrix[] = {
460 0.0f, 1.0f, 0.0f, 0.0f,
461 -1.0f, 0.0f, 0.0f, 0.0f,
462 0.0f, 0.0f, 1.0f, 0.0f,
463 0.0f, 0.0f, 0.0f, 1.0f,
466 /* horizontal-flip */
467 static const gfloat horizontal_flip_matrix[] = {
468 -1.0f, 0.0f, 0.0f, 0.0f,
469 0.0f, 1.0f, 0.0f, 0.0f,
470 0.0f, 0.0f, 1.0f, 0.0f,
471 0.0f, 0.0f, 0.0f, 1.0f,
475 static const gfloat vertical_flip_matrix[] = {
476 1.0f, 0.0f, 0.0f, 0.0f,
477 0.0f, -1.0f, 0.0f, 0.0f,
478 0.0f, 0.0f, 1.0f, 0.0f,
479 0.0f, 0.0f, 0.0f, 1.0f,
482 /* upper-left-diagonal */
483 static const gfloat upper_left_matrix[] = {
484 0.0f, 1.0f, 0.0f, 0.0f,
485 1.0f, 0.0f, 0.0f, 0.0f,
486 0.0f, 0.0f, 1.0f, 0.0f,
487 0.0f, 0.0f, 0.0f, 1.0f,
490 /* upper-right-diagonal */
491 static const gfloat upper_right_matrix[] = {
492 0.0f, -1.0f, 0.0f, 0.0f,
493 -1.0f, 0.0f, 0.0f, 0.0f,
494 0.0f, 0.0f, 1.0f, 0.0f,
495 0.0f, 0.0f, 0.0f, 1.0f,
499 gst_glimage_sink_set_rotate_method (GstGLImageSink * gl_sink,
500 GstGLRotateMethod method, gboolean from_tag)
502 GstGLRotateMethod tag_method = DEFAULT_ROTATE_METHOD;
503 GST_GLIMAGE_SINK_LOCK (gl_sink);
507 gl_sink->rotate_method = method;
509 if (gl_sink->rotate_method == GST_GL_ROTATE_METHOD_AUTO)
512 method = gl_sink->rotate_method;
514 if (method != gl_sink->current_rotate_method) {
515 GST_DEBUG_OBJECT (gl_sink, "Changing method from %s to %s",
516 rotate_methods[gl_sink->current_rotate_method].value_nick,
517 rotate_methods[method].value_nick);
520 case GST_GL_ROTATE_METHOD_IDENTITY:
521 gl_sink->transform_matrix = NULL;
522 gl_sink->output_mode_changed = TRUE;
524 case GST_GL_ROTATE_METHOD_90R:
525 gl_sink->transform_matrix = clockwise_matrix;
526 gl_sink->output_mode_changed = TRUE;
528 case GST_GL_ROTATE_METHOD_180:
529 gl_sink->transform_matrix = clockwise_180_matrix;
530 gl_sink->output_mode_changed = TRUE;
532 case GST_GL_ROTATE_METHOD_90L:
533 gl_sink->transform_matrix = counterclockwise_matrix;
534 gl_sink->output_mode_changed = TRUE;
536 case GST_GL_ROTATE_METHOD_FLIP_HORIZ:
537 gl_sink->transform_matrix = horizontal_flip_matrix;
538 gl_sink->output_mode_changed = TRUE;
540 case GST_GL_ROTATE_METHOD_FLIP_VERT:
541 gl_sink->transform_matrix = vertical_flip_matrix;
542 gl_sink->output_mode_changed = TRUE;
544 case GST_GL_ROTATE_METHOD_FLIP_UL_LR:
545 gl_sink->transform_matrix = upper_left_matrix;
546 gl_sink->output_mode_changed = TRUE;
548 case GST_GL_ROTATE_METHOD_FLIP_UR_LL:
549 gl_sink->transform_matrix = upper_right_matrix;
550 gl_sink->output_mode_changed = TRUE;
553 g_assert_not_reached ();
557 gl_sink->current_rotate_method = method;
559 GST_GLIMAGE_SINK_UNLOCK (gl_sink);
563 gst_glimage_sink_navigation_send_event (GstNavigation * navigation, GstStructure
566 GstGLImageSink *sink = GST_GLIMAGE_SINK (navigation);
567 gboolean handled = FALSE;
568 GstEvent *event = NULL;
573 if (!sink->context) {
574 gst_structure_free (structure);
578 window = gst_gl_context_get_window (sink->context);
579 g_return_if_fail (GST_IS_GL_WINDOW (window));
581 width = GST_VIDEO_SINK_WIDTH (sink);
582 height = GST_VIDEO_SINK_HEIGHT (sink);
583 gst_gl_window_get_surface_dimensions (window, &width, &height);
585 /* Converting pointer coordinates to the non scaled geometry */
586 if (width != 0 && gst_structure_get_double (structure, "pointer_x", &x)
587 && height != 0 && gst_structure_get_double (structure, "pointer_y", &y)) {
588 gdouble stream_x, stream_y;
590 _display_size_to_stream_size (sink, x, y, &stream_x, &stream_y);
592 gst_structure_set (structure, "pointer_x", G_TYPE_DOUBLE,
593 stream_x, "pointer_y", G_TYPE_DOUBLE, stream_y, NULL);
596 event = gst_event_new_navigation (structure);
598 gst_event_ref (event);
599 handled = gst_pad_push_event (GST_VIDEO_SINK_PAD (sink), event);
602 gst_element_post_message ((GstElement *) sink,
603 gst_navigation_message_new_event ((GstObject *) sink, event));
605 gst_event_unref (event);
607 gst_object_unref (window);
611 gst_glimage_sink_navigation_interface_init (GstNavigationInterface * iface)
613 iface->send_event = gst_glimage_sink_navigation_send_event;
616 #define gst_glimage_sink_parent_class parent_class
617 G_DEFINE_TYPE_WITH_CODE (GstGLImageSink, gst_glimage_sink,
618 GST_TYPE_VIDEO_SINK, G_IMPLEMENT_INTERFACE (GST_TYPE_VIDEO_OVERLAY,
619 gst_glimage_sink_video_overlay_init);
620 G_IMPLEMENT_INTERFACE (GST_TYPE_NAVIGATION,
621 gst_glimage_sink_navigation_interface_init);
622 GST_DEBUG_CATEGORY_INIT (gst_debug_glimage_sink, "glimagesink", 0,
623 "OpenGL Video Sink"));
626 gst_glimage_sink_class_init (GstGLImageSinkClass * klass)
628 GObjectClass *gobject_class;
629 GstElementClass *gstelement_class;
630 GstBaseSinkClass *gstbasesink_class;
631 GstVideoSinkClass *gstvideosink_class;
632 GstElementClass *element_class;
634 gobject_class = (GObjectClass *) klass;
635 gstelement_class = (GstElementClass *) klass;
636 gstbasesink_class = (GstBaseSinkClass *) klass;
637 gstvideosink_class = (GstVideoSinkClass *) klass;
638 element_class = GST_ELEMENT_CLASS (klass);
640 gobject_class->set_property = gst_glimage_sink_set_property;
641 gobject_class->get_property = gst_glimage_sink_get_property;
643 g_object_class_install_property (gobject_class, PROP_ROTATE_METHOD,
644 g_param_spec_enum ("rotate-method",
647 GST_TYPE_GL_ROTATE_METHOD, DEFAULT_ROTATE_METHOD,
648 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
650 g_object_class_install_property (gobject_class, PROP_FORCE_ASPECT_RATIO,
651 g_param_spec_boolean ("force-aspect-ratio", "Force aspect ratio",
652 "When enabled, scaling will respect original aspect ratio",
653 DEFAULT_FORCE_ASPECT_RATIO,
654 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
656 g_object_class_install_property (gobject_class, PROP_PIXEL_ASPECT_RATIO,
657 gst_param_spec_fraction ("pixel-aspect-ratio", "Pixel Aspect Ratio",
658 "The pixel aspect ratio of the device", 0, 1, G_MAXINT, 1, 1, 1,
659 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
661 g_object_class_install_property (gobject_class, PROP_CONTEXT,
662 g_param_spec_object ("context", "OpenGL context", "Get OpenGL context",
663 GST_TYPE_GL_CONTEXT, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
665 g_object_class_install_property (gobject_class, PROP_HANDLE_EVENTS,
666 g_param_spec_boolean ("handle-events", "Handle XEvents",
667 "When enabled, XEvents will be selected and handled",
668 DEFAULT_HANDLE_EVENTS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
670 g_object_class_install_property (gobject_class, PROP_IGNORE_ALPHA,
671 g_param_spec_boolean ("ignore-alpha", "Ignore Alpha",
672 "When enabled, alpha will be ignored and converted to black",
673 DEFAULT_IGNORE_ALPHA, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
675 g_object_class_install_property (gobject_class, PROP_OUTPUT_MULTIVIEW_LAYOUT,
676 g_param_spec_enum ("output-multiview-mode",
677 "Output Multiview Mode",
678 "Choose output mode for multiview/3D video",
679 GST_TYPE_VIDEO_MULTIVIEW_MODE, DEFAULT_MULTIVIEW_MODE,
680 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
681 g_object_class_install_property (gobject_class, PROP_OUTPUT_MULTIVIEW_FLAGS,
682 g_param_spec_flags ("output-multiview-flags",
683 "Output Multiview Flags",
684 "Output multiview layout modifier flags",
685 GST_TYPE_VIDEO_MULTIVIEW_FLAGS, DEFAULT_MULTIVIEW_FLAGS,
686 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
687 g_object_class_install_property (gobject_class,
688 PROP_OUTPUT_MULTIVIEW_DOWNMIX_MODE,
689 g_param_spec_enum ("output-multiview-downmix-mode",
690 "Mode for mono downmixed output",
691 "Output anaglyph type to generate when downmixing to mono",
692 GST_TYPE_GL_STEREO_DOWNMIX_MODE_TYPE, DEFAULT_MULTIVIEW_DOWNMIX,
693 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
695 gst_element_class_set_metadata (element_class, "OpenGL video sink",
696 "Sink/Video", "A videosink based on OpenGL",
697 "Julien Isorce <julien.isorce@gmail.com>");
700 * GstGLImageSink::client-draw:
701 * @object: the #GstGLImageSink
702 * @texture: the #guint id of the texture.
703 * @width: the #guint width of the texture.
704 * @height: the #guint height of the texture.
706 * Will be emitted before actually drawing the texture. The client should
707 * redraw the surface/contents with the @texture, @width and @height and
710 * Returns: whether the texture was redrawn by the signal. If not, a
711 * default redraw will occur.
713 gst_glimage_sink_signals[CLIENT_DRAW_SIGNAL] =
714 g_signal_new ("client-draw", G_TYPE_FROM_CLASS (klass),
715 G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_generic,
716 G_TYPE_BOOLEAN, 2, GST_TYPE_GL_CONTEXT, GST_TYPE_SAMPLE);
719 * GstGLImageSink::client-reshape:
720 * @object: the #GstGLImageSink
721 * @width: the #guint width of the texture.
722 * @height: the #guint height of the texture.
724 * The client should resize the surface/window/viewport with the @width and
725 * @height and return %TRUE.
727 * Returns: whether the content area was resized by the signal. If not, a
728 * default viewport resize will occur.
730 gst_glimage_sink_signals[CLIENT_RESHAPE_SIGNAL] =
731 g_signal_new ("client-reshape", G_TYPE_FROM_CLASS (klass),
732 G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_generic,
733 G_TYPE_BOOLEAN, 3, GST_TYPE_GL_CONTEXT, G_TYPE_UINT, G_TYPE_UINT);
735 gst_element_class_add_static_pad_template (element_class,
736 &gst_glimage_sink_template);
738 gobject_class->finalize = gst_glimage_sink_finalize;
740 gstelement_class->change_state = gst_glimage_sink_change_state;
741 gstelement_class->set_context = gst_glimage_sink_set_context;
742 gstbasesink_class->event = gst_glimage_sink_event;
743 gstbasesink_class->query = GST_DEBUG_FUNCPTR (gst_glimage_sink_query);
744 gstbasesink_class->set_caps = gst_glimage_sink_set_caps;
745 gstbasesink_class->get_caps = gst_glimage_sink_get_caps;
746 gstbasesink_class->get_times = gst_glimage_sink_get_times;
747 gstbasesink_class->prepare = gst_glimage_sink_prepare;
748 gstbasesink_class->propose_allocation = gst_glimage_sink_propose_allocation;
750 gstvideosink_class->show_frame =
751 GST_DEBUG_FUNCPTR (gst_glimage_sink_show_frame);
755 gst_glimage_sink_init (GstGLImageSink * glimage_sink)
757 glimage_sink->window_id = 0;
758 glimage_sink->new_window_id = 0;
759 glimage_sink->display = NULL;
760 glimage_sink->keep_aspect_ratio = TRUE;
761 glimage_sink->par_n = 0;
762 glimage_sink->par_d = 1;
763 glimage_sink->redisplay_texture = 0;
764 glimage_sink->handle_events = TRUE;
765 glimage_sink->ignore_alpha = TRUE;
766 glimage_sink->overlay_compositor = NULL;
768 glimage_sink->mview_output_mode = DEFAULT_MULTIVIEW_MODE;
769 glimage_sink->mview_output_flags = DEFAULT_MULTIVIEW_FLAGS;
770 glimage_sink->mview_downmix_mode = DEFAULT_MULTIVIEW_DOWNMIX;
772 glimage_sink->current_rotate_method = DEFAULT_ROTATE_METHOD;
773 glimage_sink->transform_matrix = NULL;
775 g_mutex_init (&glimage_sink->drawing_lock);
779 gst_glimage_sink_set_property (GObject * object, guint prop_id,
780 const GValue * value, GParamSpec * pspec)
782 GstGLImageSink *glimage_sink;
784 g_return_if_fail (GST_IS_GLIMAGE_SINK (object));
786 glimage_sink = GST_GLIMAGE_SINK (object);
789 case PROP_ROTATE_METHOD:
790 gst_glimage_sink_set_rotate_method (glimage_sink,
791 g_value_get_enum (value), FALSE);
793 case PROP_FORCE_ASPECT_RATIO:
795 glimage_sink->keep_aspect_ratio = g_value_get_boolean (value);
798 case PROP_PIXEL_ASPECT_RATIO:
800 glimage_sink->par_n = gst_value_get_fraction_numerator (value);
801 glimage_sink->par_d = gst_value_get_fraction_denominator (value);
804 case PROP_HANDLE_EVENTS:
805 gst_glimage_sink_handle_events (GST_VIDEO_OVERLAY (glimage_sink),
806 g_value_get_boolean (value));
808 case PROP_IGNORE_ALPHA:
809 glimage_sink->ignore_alpha = g_value_get_boolean (value);
811 case PROP_OUTPUT_MULTIVIEW_LAYOUT:
812 GST_GLIMAGE_SINK_LOCK (glimage_sink);
813 glimage_sink->mview_output_mode = g_value_get_enum (value);
814 glimage_sink->output_mode_changed = TRUE;
815 GST_GLIMAGE_SINK_UNLOCK (glimage_sink);
817 case PROP_OUTPUT_MULTIVIEW_FLAGS:
818 GST_GLIMAGE_SINK_LOCK (glimage_sink);
819 glimage_sink->mview_output_flags = g_value_get_flags (value);
820 glimage_sink->output_mode_changed = TRUE;
821 GST_GLIMAGE_SINK_UNLOCK (glimage_sink);
823 case PROP_OUTPUT_MULTIVIEW_DOWNMIX_MODE:
824 GST_GLIMAGE_SINK_LOCK (glimage_sink);
825 glimage_sink->mview_downmix_mode = g_value_get_enum (value);
826 glimage_sink->output_mode_changed = TRUE;
827 GST_GLIMAGE_SINK_UNLOCK (glimage_sink);
830 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
836 gst_glimage_sink_finalize (GObject * object)
838 GstGLImageSink *glimage_sink;
840 g_return_if_fail (GST_IS_GLIMAGE_SINK (object));
842 glimage_sink = GST_GLIMAGE_SINK (object);
843 g_mutex_clear (&glimage_sink->drawing_lock);
845 GST_DEBUG ("finalized");
846 G_OBJECT_CLASS (parent_class)->finalize (object);
850 gst_glimage_sink_get_property (GObject * object, guint prop_id,
851 GValue * value, GParamSpec * pspec)
853 GstGLImageSink *glimage_sink;
855 g_return_if_fail (GST_IS_GLIMAGE_SINK (object));
857 glimage_sink = GST_GLIMAGE_SINK (object);
860 case PROP_ROTATE_METHOD:
861 g_value_set_enum (value, glimage_sink->current_rotate_method);
863 case PROP_FORCE_ASPECT_RATIO:
864 g_value_set_boolean (value, glimage_sink->keep_aspect_ratio);
866 case PROP_PIXEL_ASPECT_RATIO:
867 gst_value_set_fraction (value, glimage_sink->par_n, glimage_sink->par_d);
870 g_value_set_object (value, glimage_sink->context);
872 case PROP_HANDLE_EVENTS:
873 g_value_set_boolean (value, glimage_sink->handle_events);
875 case PROP_IGNORE_ALPHA:
876 g_value_set_boolean (value, glimage_sink->ignore_alpha);
878 case PROP_OUTPUT_MULTIVIEW_LAYOUT:
879 g_value_set_enum (value, glimage_sink->mview_output_mode);
881 case PROP_OUTPUT_MULTIVIEW_FLAGS:
882 g_value_set_flags (value, glimage_sink->mview_output_flags);
884 case PROP_OUTPUT_MULTIVIEW_DOWNMIX_MODE:
885 g_value_set_enum (value, glimage_sink->mview_downmix_mode);
888 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
894 gst_glimage_sink_key_event_cb (GstGLWindow * window, char *event_name, char
895 *key_string, GstGLImageSink * gl_sink)
897 GST_DEBUG_OBJECT (gl_sink, "event %s key %s pressed", event_name, key_string);
898 gst_navigation_send_key_event (GST_NAVIGATION (gl_sink),
899 event_name, key_string);
903 gst_glimage_sink_mouse_event_cb (GstGLWindow * window, char *event_name,
904 int button, double posx, double posy, GstGLImageSink * gl_sink)
906 GST_DEBUG_OBJECT (gl_sink, "event %s at %g, %g", event_name, posx, posy);
907 gst_navigation_send_mouse_event (GST_NAVIGATION (gl_sink),
908 event_name, button, posx, posy);
912 _ensure_gl_setup (GstGLImageSink * gl_sink)
914 GError *error = NULL;
916 GST_TRACE_OBJECT (gl_sink, "Ensuring setup");
918 if (!gl_sink->context) {
919 GST_OBJECT_LOCK (gl_sink->display);
921 GstGLContext *other_context = NULL;
922 GstGLWindow *window = NULL;
924 if (gl_sink->context) {
925 gst_object_unref (gl_sink->context);
926 gl_sink->context = NULL;
929 GST_DEBUG_OBJECT (gl_sink,
930 "No current context, creating one for %" GST_PTR_FORMAT,
933 if (gl_sink->other_context) {
934 other_context = gst_object_ref (gl_sink->other_context);
937 gst_gl_display_get_gl_context_for_thread (gl_sink->display, NULL);
940 if (!gst_gl_display_create_context (gl_sink->display,
941 other_context, &gl_sink->context, &error)) {
943 gst_object_unref (other_context);
944 GST_OBJECT_UNLOCK (gl_sink->display);
948 GST_DEBUG_OBJECT (gl_sink,
949 "created context %" GST_PTR_FORMAT " from other context %"
950 GST_PTR_FORMAT, gl_sink->context, gl_sink->other_context);
952 window = gst_gl_context_get_window (gl_sink->context);
954 GST_DEBUG_OBJECT (gl_sink, "got window %" GST_PTR_FORMAT, window);
956 if (!gl_sink->window_id && !gl_sink->new_window_id)
957 gst_video_overlay_prepare_window_handle (GST_VIDEO_OVERLAY (gl_sink));
959 GST_DEBUG_OBJECT (gl_sink,
960 "window_id : %" G_GUINTPTR_FORMAT " , new_window_id : %"
961 G_GUINTPTR_FORMAT, gl_sink->window_id, gl_sink->new_window_id);
963 if (gl_sink->window_id != gl_sink->new_window_id) {
964 gl_sink->window_id = gl_sink->new_window_id;
965 GST_DEBUG_OBJECT (gl_sink, "Setting window handle on gl window");
966 gst_gl_window_set_window_handle (window, gl_sink->window_id);
969 gst_gl_window_handle_events (window, gl_sink->handle_events);
971 /* setup callbacks */
972 gst_gl_window_set_resize_callback (window,
973 GST_GL_WINDOW_RESIZE_CB (gst_glimage_sink_on_resize),
974 gst_object_ref (gl_sink), (GDestroyNotify) gst_object_unref);
975 gst_gl_window_set_draw_callback (window,
976 GST_GL_WINDOW_CB (gst_glimage_sink_on_draw),
977 gst_object_ref (gl_sink), (GDestroyNotify) gst_object_unref);
978 gst_gl_window_set_close_callback (window,
979 GST_GL_WINDOW_CB (gst_glimage_sink_on_close),
980 gst_object_ref (gl_sink), (GDestroyNotify) gst_object_unref);
981 gl_sink->key_sig_id = g_signal_connect (window, "key-event", G_CALLBACK
982 (gst_glimage_sink_key_event_cb), gl_sink);
983 gl_sink->mouse_sig_id =
984 g_signal_connect (window, "mouse-event",
985 G_CALLBACK (gst_glimage_sink_mouse_event_cb), gl_sink);
987 if (gl_sink->x >= 0 && gl_sink->y >= 0 && gl_sink->width > 0 &&
988 gl_sink->height > 0) {
989 gst_gl_window_set_render_rectangle (window, gl_sink->x, gl_sink->y,
990 gl_sink->width, gl_sink->height);
994 gst_object_unref (other_context);
995 gst_object_unref (window);
996 } while (!gst_gl_display_add_context (gl_sink->display, gl_sink->context));
997 GST_OBJECT_UNLOCK (gl_sink->display);
999 GST_TRACE_OBJECT (gl_sink, "Already have a context");
1005 GST_ELEMENT_ERROR (gl_sink, RESOURCE, NOT_FOUND, ("%s", error->message),
1008 if (gl_sink->context) {
1009 gst_object_unref (gl_sink->context);
1010 gl_sink->context = NULL;
1013 g_clear_error (&error);
1020 gst_glimage_sink_event (GstBaseSink * sink, GstEvent * event)
1022 GstGLImageSink *gl_sink = GST_GLIMAGE_SINK (sink);
1023 GstTagList *taglist;
1027 GST_DEBUG_OBJECT (gl_sink, "handling %s event", GST_EVENT_TYPE_NAME (event));
1029 switch (GST_EVENT_TYPE (event)) {
1031 gst_event_parse_tag (event, &taglist);
1033 if (gst_tag_list_get_string (taglist, "image-orientation", &orientation)) {
1034 if (!g_strcmp0 ("rotate-0", orientation))
1035 gst_glimage_sink_set_rotate_method (gl_sink,
1036 GST_GL_ROTATE_METHOD_IDENTITY, TRUE);
1037 else if (!g_strcmp0 ("rotate-90", orientation))
1038 gst_glimage_sink_set_rotate_method (gl_sink, GST_GL_ROTATE_METHOD_90R,
1040 else if (!g_strcmp0 ("rotate-180", orientation))
1041 gst_glimage_sink_set_rotate_method (gl_sink, GST_GL_ROTATE_METHOD_180,
1043 else if (!g_strcmp0 ("rotate-270", orientation))
1044 gst_glimage_sink_set_rotate_method (gl_sink, GST_GL_ROTATE_METHOD_90L,
1046 else if (!g_strcmp0 ("flip-rotate-0", orientation))
1047 gst_glimage_sink_set_rotate_method (gl_sink,
1048 GST_GL_ROTATE_METHOD_FLIP_HORIZ, TRUE);
1049 else if (!g_strcmp0 ("flip-rotate-90", orientation))
1050 gst_glimage_sink_set_rotate_method (gl_sink,
1051 GST_GL_ROTATE_METHOD_FLIP_UR_LL, TRUE);
1052 else if (!g_strcmp0 ("flip-rotate-180", orientation))
1053 gst_glimage_sink_set_rotate_method (gl_sink,
1054 GST_GL_ROTATE_METHOD_FLIP_VERT, TRUE);
1055 else if (!g_strcmp0 ("flip-rotate-270", orientation))
1056 gst_glimage_sink_set_rotate_method (gl_sink,
1057 GST_GL_ROTATE_METHOD_FLIP_UL_LR, TRUE);
1059 g_free (orientation);
1066 ret = GST_BASE_SINK_CLASS (parent_class)->event (sink, event);
1072 gst_glimage_sink_query (GstBaseSink * bsink, GstQuery * query)
1074 GstGLImageSink *glimage_sink = GST_GLIMAGE_SINK (bsink);
1075 gboolean res = FALSE;
1077 switch (GST_QUERY_TYPE (query)) {
1078 case GST_QUERY_CONTEXT:
1080 if (gst_gl_handle_context_query ((GstElement *) glimage_sink, query,
1081 glimage_sink->display, glimage_sink->context,
1082 glimage_sink->other_context))
1086 case GST_QUERY_DRAIN:
1090 GST_GLIMAGE_SINK_LOCK (glimage_sink);
1091 glimage_sink->redisplay_texture = 0;
1092 buf[0] = glimage_sink->stored_buffer[0];
1093 buf[1] = glimage_sink->stored_buffer[1];
1094 glimage_sink->stored_buffer[0] = glimage_sink->stored_buffer[1] = NULL;
1095 glimage_sink->stored_sync_meta = glimage_sink->next_sync_meta = NULL;
1096 GST_GLIMAGE_SINK_UNLOCK (glimage_sink);
1098 gst_buffer_replace (buf, NULL);
1099 gst_buffer_replace (buf + 1, NULL);
1101 gst_buffer_replace (&glimage_sink->input_buffer, NULL);
1102 gst_buffer_replace (&glimage_sink->input_buffer2, NULL);
1103 gst_buffer_replace (&glimage_sink->next_buffer, NULL);
1104 gst_buffer_replace (&glimage_sink->next_buffer2, NULL);
1105 gst_buffer_replace (&glimage_sink->next_sync, NULL);
1107 res = GST_BASE_SINK_CLASS (parent_class)->query (bsink, query);
1111 res = GST_BASE_SINK_CLASS (parent_class)->query (bsink, query);
1119 gst_glimage_sink_set_context (GstElement * element, GstContext * context)
1121 GstGLImageSink *gl_sink = GST_GLIMAGE_SINK (element);
1123 gst_gl_handle_set_context (element, context, &gl_sink->display,
1124 &gl_sink->other_context);
1126 if (gl_sink->display)
1127 gst_gl_display_filter_gl_api (gl_sink->display, SUPPORTED_GL_APIS);
1129 GST_ELEMENT_CLASS (parent_class)->set_context (element, context);
1132 static GstStateChangeReturn
1133 gst_glimage_sink_change_state (GstElement * element, GstStateChange transition)
1135 GstGLImageSink *glimage_sink;
1136 GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
1138 GST_DEBUG ("changing state: %s => %s",
1139 gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)),
1140 gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition)));
1142 glimage_sink = GST_GLIMAGE_SINK (element);
1144 switch (transition) {
1145 case GST_STATE_CHANGE_NULL_TO_READY:
1146 if (!gst_gl_ensure_element_data (glimage_sink, &glimage_sink->display,
1147 &glimage_sink->other_context))
1148 return GST_STATE_CHANGE_FAILURE;
1150 gst_gl_display_filter_gl_api (glimage_sink->display, SUPPORTED_GL_APIS);
1152 if (!_ensure_gl_setup (glimage_sink))
1153 return GST_STATE_CHANGE_FAILURE;
1155 case GST_STATE_CHANGE_READY_TO_PAUSED:
1156 g_atomic_int_set (&glimage_sink->to_quit, 0);
1158 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
1164 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1165 if (ret == GST_STATE_CHANGE_FAILURE)
1168 switch (transition) {
1169 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
1171 case GST_STATE_CHANGE_PAUSED_TO_READY:
1175 GST_GLIMAGE_SINK_LOCK (glimage_sink);
1176 /* mark the redisplay_texture as unavailable (=0)
1179 glimage_sink->redisplay_texture = 0;
1180 buf[0] = glimage_sink->stored_buffer[0];
1181 buf[1] = glimage_sink->stored_buffer[1];
1182 glimage_sink->stored_buffer[0] = glimage_sink->stored_buffer[1] = NULL;
1183 glimage_sink->stored_sync_meta = glimage_sink->next_sync_meta = NULL;
1185 if (glimage_sink->stored_sync)
1186 gst_buffer_unref (glimage_sink->stored_sync);
1187 glimage_sink->stored_sync = NULL;
1189 GST_GLIMAGE_SINK_UNLOCK (glimage_sink);
1191 gst_buffer_replace (buf, NULL);
1192 gst_buffer_replace (buf + 1, NULL);
1194 gst_object_replace ((GstObject **) & glimage_sink->convert_views, NULL);
1195 gst_buffer_replace (&glimage_sink->input_buffer, NULL);
1196 gst_buffer_replace (&glimage_sink->input_buffer2, NULL);
1197 gst_buffer_replace (&glimage_sink->next_buffer, NULL);
1198 gst_buffer_replace (&glimage_sink->next_buffer2, NULL);
1199 gst_buffer_replace (&glimage_sink->next_sync, NULL);
1201 glimage_sink->window_id = 0;
1202 /* but do not reset glimage_sink->new_window_id */
1204 GST_VIDEO_SINK_WIDTH (glimage_sink) = 1;
1205 GST_VIDEO_SINK_HEIGHT (glimage_sink) = 1;
1206 /* Clear cached caps */
1207 if (glimage_sink->out_caps) {
1208 gst_caps_unref (glimage_sink->out_caps);
1209 glimage_sink->out_caps = NULL;
1211 if (glimage_sink->in_caps) {
1212 gst_caps_unref (glimage_sink->in_caps);
1213 glimage_sink->in_caps = NULL;
1217 case GST_STATE_CHANGE_READY_TO_NULL:
1218 if (glimage_sink->overlay_compositor) {
1219 gst_object_unref (glimage_sink->overlay_compositor);
1220 glimage_sink->overlay_compositor = NULL;
1223 if (glimage_sink->context) {
1224 GstGLWindow *window = gst_gl_context_get_window (glimage_sink->context);
1226 gst_gl_window_send_message (window,
1227 GST_GL_WINDOW_CB (gst_glimage_sink_cleanup_glthread), glimage_sink);
1229 gst_gl_window_set_resize_callback (window, NULL, NULL, NULL);
1230 gst_gl_window_set_draw_callback (window, NULL, NULL, NULL);
1231 gst_gl_window_set_close_callback (window, NULL, NULL, NULL);
1233 if (glimage_sink->key_sig_id)
1234 g_signal_handler_disconnect (window, glimage_sink->key_sig_id);
1235 glimage_sink->key_sig_id = 0;
1236 if (glimage_sink->mouse_sig_id)
1237 g_signal_handler_disconnect (window, glimage_sink->mouse_sig_id);
1238 glimage_sink->mouse_sig_id = 0;
1240 gst_object_unref (window);
1241 gst_object_unref (glimage_sink->context);
1242 glimage_sink->context = NULL;
1245 glimage_sink->window_id = 0;
1247 if (glimage_sink->other_context) {
1248 gst_object_unref (glimage_sink->other_context);
1249 glimage_sink->other_context = NULL;
1252 if (glimage_sink->display) {
1253 gst_object_unref (glimage_sink->display);
1254 glimage_sink->display = NULL;
1265 gst_glimage_sink_get_times (GstBaseSink * bsink, GstBuffer * buf,
1266 GstClockTime * start, GstClockTime * end)
1268 GstGLImageSink *glimagesink;
1270 glimagesink = GST_GLIMAGE_SINK (bsink);
1272 if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
1273 *start = GST_BUFFER_TIMESTAMP (buf);
1274 if (GST_BUFFER_DURATION_IS_VALID (buf))
1275 *end = *start + GST_BUFFER_DURATION (buf);
1277 if (GST_VIDEO_INFO_FPS_N (&glimagesink->out_info) > 0) {
1279 gst_util_uint64_scale_int (GST_SECOND,
1280 GST_VIDEO_INFO_FPS_D (&glimagesink->out_info),
1281 GST_VIDEO_INFO_FPS_N (&glimagesink->out_info));
1288 gst_glimage_sink_get_caps (GstBaseSink * bsink, GstCaps * filter)
1290 GstCaps *tmp = NULL;
1291 GstCaps *result = NULL;
1293 tmp = gst_pad_get_pad_template_caps (GST_BASE_SINK_PAD (bsink));
1296 GST_DEBUG_OBJECT (bsink, "intersecting with filter caps %" GST_PTR_FORMAT,
1299 result = gst_caps_intersect_full (filter, tmp, GST_CAPS_INTERSECT_FIRST);
1300 gst_caps_unref (tmp);
1305 result = gst_gl_overlay_compositor_add_caps (result);
1307 GST_DEBUG_OBJECT (bsink, "returning caps: %" GST_PTR_FORMAT, result);
1313 configure_display_from_info (GstGLImageSink * glimage_sink,
1314 GstVideoInfo * vinfo)
1320 gint display_par_n, display_par_d;
1321 guint display_ratio_num, display_ratio_den;
1323 width = GST_VIDEO_INFO_WIDTH (vinfo);
1324 height = GST_VIDEO_INFO_HEIGHT (vinfo);
1326 par_n = GST_VIDEO_INFO_PAR_N (vinfo);
1327 par_d = GST_VIDEO_INFO_PAR_D (vinfo);
1332 /* get display's PAR */
1333 if (glimage_sink->par_n != 0 && glimage_sink->par_d != 0) {
1334 display_par_n = glimage_sink->par_n;
1335 display_par_d = glimage_sink->par_d;
1341 ok = gst_video_calculate_display_ratio (&display_ratio_num,
1342 &display_ratio_den, width, height, par_n, par_d, display_par_n,
1348 GST_TRACE ("PAR: %u/%u DAR:%u/%u", par_n, par_d, display_par_n,
1351 if (height % display_ratio_den == 0) {
1352 GST_DEBUG ("keeping video height");
1353 GST_VIDEO_SINK_WIDTH (glimage_sink) = (guint)
1354 gst_util_uint64_scale_int (height, display_ratio_num,
1356 GST_VIDEO_SINK_HEIGHT (glimage_sink) = height;
1357 } else if (width % display_ratio_num == 0) {
1358 GST_DEBUG ("keeping video width");
1359 GST_VIDEO_SINK_WIDTH (glimage_sink) = width;
1360 GST_VIDEO_SINK_HEIGHT (glimage_sink) = (guint)
1361 gst_util_uint64_scale_int (width, display_ratio_den, display_ratio_num);
1363 GST_DEBUG ("approximating while keeping video height");
1364 GST_VIDEO_SINK_WIDTH (glimage_sink) = (guint)
1365 gst_util_uint64_scale_int (height, display_ratio_num,
1367 GST_VIDEO_SINK_HEIGHT (glimage_sink) = height;
1369 GST_DEBUG ("scaling to %dx%d", GST_VIDEO_SINK_WIDTH (glimage_sink),
1370 GST_VIDEO_SINK_HEIGHT (glimage_sink));
1375 /* Called with GST_GLIMAGE_SINK lock held, to
1376 * copy in_info to out_info and update out_caps */
1378 update_output_format (GstGLImageSink * glimage_sink)
1380 GstVideoInfo *out_info = &glimage_sink->out_info;
1381 gboolean input_is_mono = FALSE;
1382 GstVideoMultiviewMode mv_mode;
1383 GstGLWindow *window = NULL;
1384 GstGLTextureTarget previous_target;
1386 const gchar *target_str;
1390 *out_info = glimage_sink->in_info;
1391 previous_target = glimage_sink->texture_target;
1393 mv_mode = GST_VIDEO_INFO_MULTIVIEW_MODE (&glimage_sink->in_info);
1395 if (mv_mode == GST_VIDEO_MULTIVIEW_MODE_NONE ||
1396 mv_mode == GST_VIDEO_MULTIVIEW_MODE_MONO ||
1397 mv_mode == GST_VIDEO_MULTIVIEW_MODE_LEFT ||
1398 mv_mode == GST_VIDEO_MULTIVIEW_MODE_RIGHT)
1399 input_is_mono = TRUE;
1401 if (input_is_mono == FALSE &&
1402 glimage_sink->mview_output_mode != GST_VIDEO_MULTIVIEW_MODE_NONE) {
1403 /* Input is multiview, and output wants a conversion - configure 3d converter now,
1404 * otherwise defer it until either the caps or the 3D output mode changes */
1405 gst_video_multiview_video_info_change_mode (out_info,
1406 glimage_sink->mview_output_mode, glimage_sink->mview_output_flags);
1408 if (glimage_sink->convert_views == NULL) {
1409 glimage_sink->convert_views = gst_gl_view_convert_new ();
1410 gst_gl_view_convert_set_context (glimage_sink->convert_views,
1411 glimage_sink->context);
1414 if (glimage_sink->convert_views) {
1415 gst_object_unref (glimage_sink->convert_views);
1416 glimage_sink->convert_views = NULL;
1420 ret = configure_display_from_info (glimage_sink, out_info);
1422 if (glimage_sink->convert_views) {
1423 /* Match actual output window size for pixel-aligned output,
1424 * even though we can't necessarily match the starting left/right
1425 * view parity properly */
1426 glimage_sink->out_info.width = MAX (1, glimage_sink->display_rect.w);
1427 glimage_sink->out_info.height = MAX (1, glimage_sink->display_rect.h);
1428 GST_LOG_OBJECT (glimage_sink, "Set 3D output scale to %d,%d",
1429 glimage_sink->display_rect.w, glimage_sink->display_rect.h);
1432 s = gst_caps_get_structure (glimage_sink->in_caps, 0);
1433 target_str = gst_structure_get_string (s, "texture-target");
1436 target_str = GST_GL_TEXTURE_TARGET_2D_STR;
1438 glimage_sink->texture_target = gst_gl_texture_target_from_string (target_str);
1439 if (!glimage_sink->texture_target)
1442 out_caps = gst_video_info_to_caps (out_info);
1443 gst_caps_set_features (out_caps, 0,
1444 gst_caps_features_from_string (GST_CAPS_FEATURE_MEMORY_GL_MEMORY));
1445 gst_caps_set_simple (out_caps, "texture-target", G_TYPE_STRING,
1448 if (glimage_sink->convert_views) {
1449 gst_caps_set_simple (out_caps, "texture-target", G_TYPE_STRING,
1450 GST_GL_TEXTURE_TARGET_2D_STR, NULL);
1452 glimage_sink->texture_target = GST_GL_TEXTURE_TARGET_2D;
1454 GST_GLIMAGE_SINK_UNLOCK (glimage_sink);
1455 gst_gl_view_convert_set_caps (glimage_sink->convert_views,
1456 glimage_sink->in_caps, out_caps);
1457 g_object_set (glimage_sink->convert_views, "downmix-mode",
1458 glimage_sink->mview_downmix_mode, NULL);
1459 GST_GLIMAGE_SINK_LOCK (glimage_sink);
1462 if (glimage_sink->out_caps)
1463 gst_caps_unref (glimage_sink->out_caps);
1464 glimage_sink->out_caps = out_caps;
1466 if (previous_target != GST_GL_TEXTURE_TARGET_NONE &&
1467 glimage_sink->texture_target != previous_target) {
1468 /* regenerate the shader for the changed target */
1469 GstGLWindow *window = gst_gl_context_get_window (glimage_sink->context);
1470 gst_gl_window_send_message (window,
1471 GST_GL_WINDOW_CB (gst_glimage_sink_cleanup_glthread), glimage_sink);
1472 gst_object_unref (window);
1475 glimage_sink->output_mode_changed = FALSE;
1477 if (glimage_sink->context)
1478 window = gst_gl_context_get_window (glimage_sink->context);
1480 gst_gl_window_queue_resize (window);
1481 gst_object_unref (window);
1488 gst_glimage_sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
1490 GstGLImageSink *glimage_sink;
1494 GST_DEBUG_OBJECT (bsink, "set caps with %" GST_PTR_FORMAT, caps);
1496 glimage_sink = GST_GLIMAGE_SINK (bsink);
1498 ok = gst_video_info_from_caps (&vinfo, caps);
1502 if (!_ensure_gl_setup (glimage_sink))
1505 GST_GLIMAGE_SINK_LOCK (glimage_sink);
1506 if (glimage_sink->in_caps)
1507 gst_caps_unref (glimage_sink->in_caps);
1508 glimage_sink->in_caps = gst_caps_ref (caps);
1509 glimage_sink->in_info = vinfo;
1510 ok = update_output_format (glimage_sink);
1512 GST_GLIMAGE_SINK_UNLOCK (glimage_sink);
1517 /* Take the input_buffer and run it through 3D conversion if needed.
1518 * Called with glimagesink lock, but might drop it temporarily */
1520 prepare_next_buffer (GstGLImageSink * glimage_sink)
1522 GstBuffer *in_buffer, *next_buffer, *old_buffer;
1523 GstBuffer *in_buffer2 = NULL, *next_buffer2 = NULL, *old_buffer2;
1524 GstBuffer *next_sync = NULL, *old_sync;
1525 GstGLSyncMeta *sync_meta;
1526 GstVideoFrame gl_frame;
1527 GstGLViewConvert *convert_views = NULL;
1530 if (glimage_sink->input_buffer == NULL)
1531 return TRUE; /* No input buffer to process */
1533 if (GST_VIDEO_INFO_MULTIVIEW_MODE (&glimage_sink->in_info) ==
1534 GST_VIDEO_MULTIVIEW_MODE_FRAME_BY_FRAME) {
1535 if (glimage_sink->input_buffer2 == NULL)
1536 return TRUE; /* Need 2nd input buffer to process */
1537 in_buffer2 = gst_buffer_ref (glimage_sink->input_buffer2);
1540 in_buffer = gst_buffer_ref (glimage_sink->input_buffer);
1541 if (glimage_sink->convert_views &&
1542 (GST_VIDEO_INFO_MULTIVIEW_MODE (&glimage_sink->in_info) !=
1543 GST_VIDEO_INFO_MULTIVIEW_MODE (&glimage_sink->out_info) ||
1544 GST_VIDEO_INFO_MULTIVIEW_FLAGS (&glimage_sink->in_info) !=
1545 GST_VIDEO_INFO_MULTIVIEW_FLAGS (&glimage_sink->out_info)))
1546 convert_views = gst_object_ref (glimage_sink->convert_views);
1548 GST_GLIMAGE_SINK_UNLOCK (glimage_sink);
1550 if (convert_views) {
1551 info = &glimage_sink->out_info;
1553 if (gst_gl_view_convert_submit_input_buffer (glimage_sink->convert_views,
1554 GST_BUFFER_IS_DISCONT (in_buffer), in_buffer) != GST_FLOW_OK) {
1555 gst_buffer_replace (&in_buffer2, NULL);
1559 if (gst_gl_view_convert_submit_input_buffer (glimage_sink->convert_views,
1560 GST_BUFFER_IS_DISCONT (in_buffer2), in_buffer2) != GST_FLOW_OK) {
1565 if (gst_gl_view_convert_get_output (glimage_sink->convert_views,
1566 &next_buffer) != GST_FLOW_OK)
1568 if (GST_VIDEO_INFO_MULTIVIEW_MODE (info) ==
1569 GST_VIDEO_MULTIVIEW_MODE_FRAME_BY_FRAME) {
1570 if (gst_gl_view_convert_get_output (glimage_sink->convert_views,
1571 &next_buffer2) != GST_FLOW_OK)
1574 gst_object_unref (convert_views);
1575 convert_views = NULL;
1577 if (next_buffer == NULL) {
1578 /* Not ready to paint a buffer yet */
1579 GST_GLIMAGE_SINK_LOCK (glimage_sink);
1583 next_buffer = in_buffer;
1584 info = &glimage_sink->in_info;
1587 if (!glimage_sink->overlay_compositor) {
1588 if (!(glimage_sink->overlay_compositor =
1589 gst_gl_overlay_compositor_new (glimage_sink->context))) {
1590 gst_buffer_unref (next_buffer);
1595 gst_gl_overlay_compositor_upload_overlays (glimage_sink->overlay_compositor,
1598 sync_meta = gst_buffer_get_gl_sync_meta (next_buffer);
1601 next_sync = gst_buffer_new ();
1602 sync_meta = gst_buffer_add_gl_sync_meta (glimage_sink->context, next_sync);
1603 gst_gl_sync_meta_set_sync_point (sync_meta, glimage_sink->context);
1606 /* in_buffer invalid now */
1607 if (!gst_video_frame_map (&gl_frame, info, next_buffer,
1608 GST_MAP_READ | GST_MAP_GL)) {
1609 gst_buffer_unref (next_buffer);
1610 GST_ERROR ("Failed to map video frame.");
1614 GST_GLIMAGE_SINK_LOCK (glimage_sink);
1615 glimage_sink->next_tex = *(guint *) gl_frame.data[0];
1617 old_buffer = glimage_sink->next_buffer;
1618 glimage_sink->next_buffer = next_buffer;
1619 old_buffer2 = glimage_sink->next_buffer2;
1620 glimage_sink->next_buffer2 = next_buffer2;
1622 old_sync = glimage_sink->next_sync;
1623 glimage_sink->next_sync = next_sync;
1624 glimage_sink->next_sync_meta = sync_meta;
1626 /* Need to drop the lock again, to avoid a deadlock if we're
1627 * dropping the last ref on this buffer and it goes back to our
1629 GST_GLIMAGE_SINK_UNLOCK (glimage_sink);
1632 gst_buffer_unref (old_buffer);
1634 gst_buffer_unref (old_buffer2);
1636 gst_buffer_unref (old_sync);
1637 gst_video_frame_unmap (&gl_frame);
1639 GST_GLIMAGE_SINK_LOCK (glimage_sink);
1645 gst_object_unref (convert_views);
1646 GST_GLIMAGE_SINK_LOCK (glimage_sink);
1650 static GstFlowReturn
1651 gst_glimage_sink_prepare (GstBaseSink * bsink, GstBuffer * buf)
1653 GstGLImageSink *glimage_sink;
1654 GstGLSyncMeta *sync_meta;
1656 GstBuffer *old_input;
1658 glimage_sink = GST_GLIMAGE_SINK (bsink);
1660 GST_TRACE ("preparing buffer:%p", buf);
1662 if (GST_VIDEO_SINK_WIDTH (glimage_sink) < 1 ||
1663 GST_VIDEO_SINK_HEIGHT (glimage_sink) < 1) {
1664 return GST_FLOW_NOT_NEGOTIATED;
1667 if (!_ensure_gl_setup (glimage_sink))
1668 return GST_FLOW_NOT_NEGOTIATED;
1670 sync_meta = gst_buffer_get_gl_sync_meta (buf);
1672 gst_gl_sync_meta_wait (sync_meta, glimage_sink->context);
1674 GST_GLIMAGE_SINK_LOCK (glimage_sink);
1675 if (glimage_sink->window_resized) {
1676 glimage_sink->window_resized = FALSE;
1677 GST_GLIMAGE_SINK_UNLOCK (glimage_sink);
1678 GST_DEBUG_OBJECT (glimage_sink, "Sending reconfigure event on sinkpad.");
1679 gst_pad_push_event (GST_BASE_SINK (glimage_sink)->sinkpad,
1680 gst_event_new_reconfigure ());
1681 GST_GLIMAGE_SINK_LOCK (glimage_sink);
1684 target = &glimage_sink->input_buffer;
1685 if (GST_VIDEO_INFO_MULTIVIEW_MODE (&glimage_sink->in_info) ==
1686 GST_VIDEO_MULTIVIEW_MODE_FRAME_BY_FRAME &&
1687 !GST_BUFFER_FLAG_IS_SET (buf, GST_VIDEO_BUFFER_FLAG_FIRST_IN_BUNDLE)) {
1688 target = &glimage_sink->input_buffer2;
1690 old_input = *target;
1691 *target = gst_buffer_ref (buf);
1693 if (glimage_sink->output_mode_changed)
1694 update_output_format (glimage_sink);
1696 if (!prepare_next_buffer (glimage_sink)) {
1697 GST_GLIMAGE_SINK_UNLOCK (glimage_sink);
1699 gst_buffer_unref (old_input);
1700 goto convert_views_failed;
1702 GST_GLIMAGE_SINK_UNLOCK (glimage_sink);
1705 gst_buffer_unref (old_input);
1707 if (glimage_sink->window_id != glimage_sink->new_window_id) {
1708 GstGLWindow *window = gst_gl_context_get_window (glimage_sink->context);
1710 glimage_sink->window_id = glimage_sink->new_window_id;
1711 gst_gl_window_set_window_handle (window, glimage_sink->window_id);
1713 gst_object_unref (window);
1717 convert_views_failed:
1719 GST_ELEMENT_ERROR (glimage_sink, RESOURCE, NOT_FOUND,
1720 ("%s", "Failed to convert multiview video buffer"), (NULL));
1721 return GST_FLOW_ERROR;
1725 static GstFlowReturn
1726 gst_glimage_sink_show_frame (GstVideoSink * vsink, GstBuffer * buf)
1728 GstGLImageSink *glimage_sink;
1730 GST_TRACE ("rendering buffer:%p", buf);
1732 glimage_sink = GST_GLIMAGE_SINK (vsink);
1734 GST_TRACE ("redisplay texture:%u of size:%ux%u, window size:%ux%u",
1735 glimage_sink->next_tex, GST_VIDEO_INFO_WIDTH (&glimage_sink->out_info),
1736 GST_VIDEO_INFO_HEIGHT (&glimage_sink->out_info),
1737 GST_VIDEO_SINK_WIDTH (glimage_sink),
1738 GST_VIDEO_SINK_HEIGHT (glimage_sink));
1740 /* Ask the underlying window to redraw its content */
1741 if (!gst_glimage_sink_redisplay (glimage_sink))
1742 goto redisplay_failed;
1744 GST_TRACE ("post redisplay");
1746 if (g_atomic_int_get (&glimage_sink->to_quit) != 0) {
1747 GST_ELEMENT_ERROR (glimage_sink, RESOURCE, NOT_FOUND,
1748 ("%s", "Quit requested"), (NULL));
1749 return GST_FLOW_ERROR;
1757 GST_ELEMENT_ERROR (glimage_sink, RESOURCE, NOT_FOUND,
1758 ("%s", "Window redisplay failed"), (NULL));
1759 return GST_FLOW_ERROR;
1764 gst_glimage_sink_video_overlay_init (GstVideoOverlayInterface * iface)
1766 iface->set_window_handle = gst_glimage_sink_set_window_handle;
1767 iface->set_render_rectangle = gst_glimage_sink_set_render_rectangle;
1768 iface->handle_events = gst_glimage_sink_handle_events;
1769 iface->expose = gst_glimage_sink_expose;
1773 gst_glimage_sink_set_window_handle (GstVideoOverlay * overlay, guintptr id)
1775 GstGLImageSink *glimage_sink = GST_GLIMAGE_SINK (overlay);
1776 guintptr window_id = (guintptr) id;
1778 g_return_if_fail (GST_IS_GLIMAGE_SINK (overlay));
1780 GST_DEBUG ("set_xwindow_id %" G_GUINT64_FORMAT, (guint64) window_id);
1782 glimage_sink->new_window_id = window_id;
1787 gst_glimage_sink_expose (GstVideoOverlay * overlay)
1789 GstGLImageSink *glimage_sink = GST_GLIMAGE_SINK (overlay);
1791 /* redisplay opengl scene */
1792 if (glimage_sink->display && glimage_sink->window_id) {
1794 if (glimage_sink->window_id != glimage_sink->new_window_id) {
1795 GstGLWindow *window = gst_gl_context_get_window (glimage_sink->context);
1797 glimage_sink->window_id = glimage_sink->new_window_id;
1798 gst_gl_window_set_window_handle (window, glimage_sink->window_id);
1800 gst_object_unref (window);
1803 gst_glimage_sink_redisplay (glimage_sink);
1808 gst_glimage_sink_handle_events (GstVideoOverlay * overlay,
1809 gboolean handle_events)
1811 GstGLImageSink *glimage_sink = GST_GLIMAGE_SINK (overlay);
1813 glimage_sink->handle_events = handle_events;
1814 if (G_LIKELY (glimage_sink->context)) {
1815 GstGLWindow *window;
1816 window = gst_gl_context_get_window (glimage_sink->context);
1817 gst_gl_window_handle_events (window, handle_events);
1818 gst_object_unref (window);
1823 gst_glimage_sink_set_render_rectangle (GstVideoOverlay * overlay,
1824 gint x, gint y, gint width, gint height)
1826 GstGLImageSink *glimage_sink = GST_GLIMAGE_SINK (overlay);
1828 if (G_LIKELY (glimage_sink->context)) {
1829 GstGLWindow *window;
1830 window = gst_gl_context_get_window (glimage_sink->context);
1831 gst_gl_window_set_render_rectangle (window, x, y, width, height);
1832 gst_object_unref (window);
1835 glimage_sink->x = x;
1836 glimage_sink->y = y;
1837 glimage_sink->width = width;
1838 glimage_sink->height = height;
1842 gst_glimage_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query)
1844 GstGLImageSink *glimage_sink = GST_GLIMAGE_SINK (bsink);
1845 GstStructure *config;
1849 GstStructure *allocation_meta = NULL;
1851 if (!_ensure_gl_setup (glimage_sink))
1854 gst_query_parse_allocation (query, &caps, &need_pool);
1860 GstBufferPool *pool;
1863 if (!gst_video_info_from_caps (&info, caps))
1866 /* the normal size of a frame */
1869 GST_DEBUG_OBJECT (glimage_sink, "create new pool");
1871 pool = gst_gl_buffer_pool_new (glimage_sink->context);
1872 config = gst_buffer_pool_get_config (pool);
1873 gst_buffer_pool_config_set_params (config, caps, size, 0, 0);
1874 gst_buffer_pool_config_add_option (config,
1875 GST_BUFFER_POOL_OPTION_GL_SYNC_META);
1877 if (!gst_buffer_pool_set_config (pool, config)) {
1878 g_object_unref (pool);
1882 /* we need at least 2 buffer because we hold on to the last one */
1883 gst_query_add_allocation_pool (query, pool, size, 2, 0);
1884 g_object_unref (pool);
1887 if (glimage_sink->context->gl_vtable->FenceSync)
1888 gst_query_add_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, 0);
1890 if (glimage_sink->window_width != 0 && glimage_sink->window_height != 0) {
1892 gst_structure_new ("GstVideoOverlayCompositionMeta",
1893 "width", G_TYPE_UINT, glimage_sink->window_width,
1894 "height", G_TYPE_UINT, glimage_sink->window_height, NULL);
1895 GST_DEBUG ("sending alloc query with size %dx%d",
1896 glimage_sink->window_width, glimage_sink->window_height);
1899 gst_query_add_allocation_meta (query,
1900 GST_VIDEO_OVERLAY_COMPOSITION_META_API_TYPE, allocation_meta);
1901 gst_query_add_allocation_meta (query,
1902 GST_VIDEO_AFFINE_TRANSFORMATION_META_API_TYPE, 0);
1904 if (allocation_meta)
1905 gst_structure_free (allocation_meta);
1912 GST_WARNING_OBJECT (bsink, "no caps specified");
1917 GST_WARNING_OBJECT (bsink, "invalid caps specified");
1922 GST_WARNING_OBJECT (bsink, "failed setting config");
1928 static const GLfloat vertices[] = {
1929 1.0f, 1.0f, 0.0f, 1.0f, 0.0f,
1930 -1.0f, 1.0f, 0.0f, 0.0f, 0.0f,
1931 -1.0f, -1.0f, 0.0f, 0.0f, 1.0f,
1932 1.0f, -1.0f, 0.0f, 1.0f, 1.0f
1935 static const GLushort indices[] = { 0, 1, 2, 0, 2, 3 };
1939 _bind_buffer (GstGLImageSink * gl_sink)
1941 const GstGLFuncs *gl = gl_sink->context->gl_vtable;
1943 gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, gl_sink->vbo_indices);
1944 gl->BindBuffer (GL_ARRAY_BUFFER, gl_sink->vertex_buffer);
1946 /* Load the vertex position */
1947 gl->VertexAttribPointer (gl_sink->attr_position, 3, GL_FLOAT, GL_FALSE,
1948 5 * sizeof (GLfloat), (void *) 0);
1950 /* Load the texture coordinate */
1951 gl->VertexAttribPointer (gl_sink->attr_texture, 2, GL_FLOAT, GL_FALSE,
1952 5 * sizeof (GLfloat), (void *) (3 * sizeof (GLfloat)));
1954 gl->EnableVertexAttribArray (gl_sink->attr_position);
1955 gl->EnableVertexAttribArray (gl_sink->attr_texture);
1959 _unbind_buffer (GstGLImageSink * gl_sink)
1961 const GstGLFuncs *gl = gl_sink->context->gl_vtable;
1963 gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, 0);
1964 gl->BindBuffer (GL_ARRAY_BUFFER, 0);
1966 gl->DisableVertexAttribArray (gl_sink->attr_position);
1967 gl->DisableVertexAttribArray (gl_sink->attr_texture);
1970 /* Called in the gl thread */
1972 gst_glimage_sink_thread_init_redisplay (GstGLImageSink * gl_sink)
1974 const GstGLFuncs *gl = gl_sink->context->gl_vtable;
1975 GError *error = NULL;
1976 GstGLSLStage *frag_stage, *vert_stage;
1978 vert_stage = gst_glsl_stage_new_with_string (gl_sink->context,
1979 GL_VERTEX_SHADER, GST_GLSL_VERSION_NONE,
1980 GST_GLSL_PROFILE_ES | GST_GLSL_PROFILE_COMPATIBILITY,
1981 gst_gl_shader_string_vertex_mat4_vertex_transform);
1982 if (gl_sink->texture_target == GST_GL_TEXTURE_TARGET_EXTERNAL_OES) {
1983 frag_stage = gst_glsl_stage_new_with_string (gl_sink->context,
1984 GL_FRAGMENT_SHADER, GST_GLSL_VERSION_NONE,
1985 GST_GLSL_PROFILE_ES | GST_GLSL_PROFILE_COMPATIBILITY,
1986 gst_gl_shader_string_fragment_external_oes_default);
1988 frag_stage = gst_glsl_stage_new_default_fragment (gl_sink->context);
1990 if (!vert_stage || !frag_stage) {
1991 GST_ERROR_OBJECT (gl_sink, "Failed to retreive fragment shader for "
1994 gst_object_unref (vert_stage);
1996 gst_object_unref (frag_stage);
1997 gst_glimage_sink_cleanup_glthread (gl_sink);
2001 if (!(gl_sink->redisplay_shader =
2002 gst_gl_shader_new_link_with_stages (gl_sink->context, &error,
2003 vert_stage, frag_stage, NULL))) {
2004 GST_ERROR_OBJECT (gl_sink, "Failed to link shader: %s", error->message);
2005 gst_glimage_sink_cleanup_glthread (gl_sink);
2009 gl_sink->attr_position =
2010 gst_gl_shader_get_attribute_location (gl_sink->redisplay_shader,
2012 gl_sink->attr_texture =
2013 gst_gl_shader_get_attribute_location (gl_sink->redisplay_shader,
2016 if (gl->GenVertexArrays) {
2017 gl->GenVertexArrays (1, &gl_sink->vao);
2018 gl->BindVertexArray (gl_sink->vao);
2021 if (!gl_sink->vertex_buffer) {
2022 gl->GenBuffers (1, &gl_sink->vertex_buffer);
2023 gl->BindBuffer (GL_ARRAY_BUFFER, gl_sink->vertex_buffer);
2024 gl->BufferData (GL_ARRAY_BUFFER, 4 * 5 * sizeof (GLfloat), vertices,
2028 if (!gl_sink->vbo_indices) {
2029 gl->GenBuffers (1, &gl_sink->vbo_indices);
2030 gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, gl_sink->vbo_indices);
2031 gl->BufferData (GL_ELEMENT_ARRAY_BUFFER, sizeof (indices), indices,
2035 if (gl->GenVertexArrays) {
2036 _bind_buffer (gl_sink);
2037 gl->BindVertexArray (0);
2040 gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, 0);
2041 gl->BindBuffer (GL_ARRAY_BUFFER, 0);
2045 gst_glimage_sink_cleanup_glthread (GstGLImageSink * gl_sink)
2047 const GstGLFuncs *gl = gl_sink->context->gl_vtable;
2049 if (gl_sink->redisplay_shader) {
2050 gst_object_unref (gl_sink->redisplay_shader);
2051 gl_sink->redisplay_shader = NULL;
2055 gl->DeleteVertexArrays (1, &gl_sink->vao);
2059 if (gl_sink->vertex_buffer) {
2060 gl->DeleteBuffers (1, &gl_sink->vertex_buffer);
2061 gl_sink->vertex_buffer = 0;
2064 if (gl_sink->vbo_indices) {
2065 gl->DeleteBuffers (1, &gl_sink->vbo_indices);
2066 gl_sink->vbo_indices = 0;
2069 if (gl_sink->overlay_compositor)
2070 gst_gl_overlay_compositor_free_overlays (gl_sink->overlay_compositor);
2073 /* Called with object lock held */
2075 gst_glimage_sink_on_resize (GstGLImageSink * gl_sink, gint width, gint height)
2077 /* Here gl_sink members (ex:gl_sink->out_info) have a life time of set_caps.
2078 * It means that they cannot change between two set_caps
2080 const GstGLFuncs *gl;
2081 gboolean do_reshape;
2083 GST_DEBUG_OBJECT (gl_sink, "GL Window resized to %ux%u", width, height);
2085 /* check if a client reshape callback is registered */
2086 g_signal_emit (gl_sink, gst_glimage_sink_signals[CLIENT_RESHAPE_SIGNAL], 0,
2087 gl_sink->context, width, height, &do_reshape);
2088 GST_GLIMAGE_SINK_LOCK (gl_sink);
2090 gl = gl_sink->context->gl_vtable;
2091 width = MAX (1, width);
2092 height = MAX (1, height);
2094 /* Check if we would suggest a different width/height now */
2095 gl_sink->window_resized = ((gl_sink->window_width != width)
2096 || (gl_sink->window_height != height))
2097 && (gl_sink->window_width != 0)
2098 && (gl_sink->window_height != 0);
2100 gl_sink->window_width = width;
2101 gl_sink->window_height = height;
2103 gst_gl_insert_debug_marker (gl_sink->context, "%s window resize to %ix%i",
2104 GST_OBJECT_NAME (gl_sink), width, height);
2106 /* default reshape */
2108 if (gl_sink->keep_aspect_ratio) {
2109 GstVideoRectangle src, dst, result;
2113 if (gl_sink->current_rotate_method == GST_GL_ROTATE_METHOD_90R
2114 || gl_sink->current_rotate_method == GST_GL_ROTATE_METHOD_90L
2115 || gl_sink->current_rotate_method == GST_GL_ROTATE_METHOD_FLIP_UL_LR
2116 || gl_sink->current_rotate_method ==
2117 GST_GL_ROTATE_METHOD_FLIP_UR_LL) {
2118 src.h = GST_VIDEO_SINK_WIDTH (gl_sink);
2119 src.w = GST_VIDEO_SINK_HEIGHT (gl_sink);
2121 src.w = GST_VIDEO_SINK_WIDTH (gl_sink);
2122 src.h = GST_VIDEO_SINK_HEIGHT (gl_sink);
2130 gst_video_sink_center_rect (src, dst, &result, TRUE);
2131 gl_sink->output_mode_changed |= (result.w != gl_sink->display_rect.w);
2132 gl_sink->output_mode_changed |= (result.h != gl_sink->display_rect.h);
2133 gl_sink->display_rect = result;
2135 gl_sink->output_mode_changed |= (width != gl_sink->display_rect.w);
2136 gl_sink->output_mode_changed |= (height != gl_sink->display_rect.h);
2138 gl_sink->display_rect.x = 0;
2139 gl_sink->display_rect.y = 0;
2140 gl_sink->display_rect.w = width;
2141 gl_sink->display_rect.h = height;
2144 gl->Viewport (gl_sink->display_rect.x, gl_sink->display_rect.y,
2145 gl_sink->display_rect.w, gl_sink->display_rect.h);
2146 GST_DEBUG_OBJECT (gl_sink, "GL output area now %u,%u %ux%u",
2147 gl_sink->display_rect.x, gl_sink->display_rect.y,
2148 gl_sink->display_rect.w, gl_sink->display_rect.h);
2150 GST_GLIMAGE_SINK_UNLOCK (gl_sink);
2154 gst_glimage_sink_on_draw (GstGLImageSink * gl_sink)
2156 /* Here gl_sink members (ex:gl_sink->out_info) have a life time of set_caps.
2157 * It means that they cannot not change between two set_caps as well as
2158 * for the redisplay_texture size.
2159 * Whereas redisplay_texture id changes every sink_render
2162 const GstGLFuncs *gl = NULL;
2163 GstGLWindow *window = NULL;
2164 gboolean do_redisplay = FALSE;
2165 GstSample *sample = NULL;
2166 guint gl_target = gst_gl_texture_target_to_gl (gl_sink->texture_target);
2168 g_return_if_fail (GST_IS_GLIMAGE_SINK (gl_sink));
2170 gl = gl_sink->context->gl_vtable;
2172 GST_GLIMAGE_SINK_LOCK (gl_sink);
2174 /* check if texture is ready for being drawn */
2175 if (!gl_sink->redisplay_texture) {
2176 GST_GLIMAGE_SINK_UNLOCK (gl_sink);
2180 window = gst_gl_context_get_window (gl_sink->context);
2181 window->is_drawing = TRUE;
2184 gst_gl_insert_debug_marker (gl_sink->context, "%s element drawing texture %u",
2185 GST_OBJECT_NAME (gl_sink), gl_sink->redisplay_texture);
2186 GST_TRACE ("redrawing texture:%u", gl_sink->redisplay_texture);
2188 if (gl_sink->stored_sync_meta)
2189 gst_gl_sync_meta_wait (gl_sink->stored_sync_meta,
2190 gst_gl_context_get_current ());
2192 /* make sure that the environnement is clean */
2193 gst_gl_context_clear_shader (gl_sink->context);
2194 gl->BindTexture (gl_target, 0);
2196 sample = gst_sample_new (gl_sink->stored_buffer[0],
2197 gl_sink->out_caps, &GST_BASE_SINK (gl_sink)->segment, NULL);
2198 g_signal_emit (gl_sink, gst_glimage_sink_signals[CLIENT_DRAW_SIGNAL], 0,
2199 gl_sink->context, sample, &do_redisplay);
2200 gst_sample_unref (sample);
2202 if (gl_sink->stored_buffer[1]) {
2203 sample = gst_sample_new (gl_sink->stored_buffer[1],
2204 gl_sink->out_caps, &GST_BASE_SINK (gl_sink)->segment, NULL);
2205 g_signal_emit (gl_sink, gst_glimage_sink_signals[CLIENT_DRAW_SIGNAL], 0,
2206 gl_sink->context, sample, &do_redisplay);
2207 gst_sample_unref (sample);
2210 if (!do_redisplay) {
2211 gfloat alpha = gl_sink->ignore_alpha ? 1.0f : 0.0f;
2213 gl->ClearColor (0.0, 0.0, 0.0, alpha);
2214 gl->Clear (GL_COLOR_BUFFER_BIT);
2216 if (gl_sink->ignore_alpha) {
2217 gl->BlendColor (0.0, 0.0, 0.0, alpha);
2218 gl->BlendFunc (GL_SRC_ALPHA, GL_CONSTANT_COLOR);
2219 gl->BlendEquation (GL_FUNC_ADD);
2220 gl->Enable (GL_BLEND);
2223 gst_gl_shader_use (gl_sink->redisplay_shader);
2225 if (gl->GenVertexArrays)
2226 gl->BindVertexArray (gl_sink->vao);
2227 _bind_buffer (gl_sink);
2229 gl->ActiveTexture (GL_TEXTURE0);
2230 gl->BindTexture (gl_target, gl_sink->redisplay_texture);
2231 gst_gl_shader_set_uniform_1i (gl_sink->redisplay_shader, "tex", 0);
2233 GstVideoAffineTransformationMeta *af_meta;
2237 gst_buffer_get_video_affine_transformation_meta
2238 (gl_sink->stored_buffer[0]);
2240 if (gl_sink->transform_matrix) {
2243 gst_gl_get_affine_transformation_meta_as_ndc_ext (af_meta, tmp);
2244 gst_gl_multiply_matrix4 (tmp, gl_sink->transform_matrix, matrix);
2246 gst_gl_get_affine_transformation_meta_as_ndc_ext (af_meta, matrix);
2249 gst_gl_shader_set_uniform_matrix_4fv (gl_sink->redisplay_shader,
2250 "u_transformation", 1, FALSE, matrix);
2253 gl->DrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, 0);
2255 gl->BindTexture (gl_target, 0);
2256 gst_gl_context_clear_shader (gl_sink->context);
2258 if (gl->GenVertexArrays)
2259 gl->BindVertexArray (0);
2260 _unbind_buffer (gl_sink);
2262 if (gl_sink->ignore_alpha)
2263 gl->Disable (GL_BLEND);
2265 gst_gl_overlay_compositor_draw_overlays (gl_sink->overlay_compositor);
2267 /* end default opengl scene */
2268 window->is_drawing = FALSE;
2269 gst_object_unref (window);
2271 GST_GLIMAGE_SINK_UNLOCK (gl_sink);
2275 gst_glimage_sink_on_close (GstGLImageSink * gl_sink)
2277 GstGLWindow *window;
2279 GST_WARNING_OBJECT (gl_sink, "Output window was closed");
2281 window = gst_gl_context_get_window (gl_sink->context);
2283 if (gl_sink->key_sig_id)
2284 g_signal_handler_disconnect (window, gl_sink->key_sig_id);
2285 gl_sink->key_sig_id = 0;
2286 if (gl_sink->mouse_sig_id)
2287 g_signal_handler_disconnect (window, gl_sink->mouse_sig_id);
2288 gl_sink->mouse_sig_id = 0;
2290 g_atomic_int_set (&gl_sink->to_quit, 1);
2292 gst_object_unref (window);
2296 gst_glimage_sink_redisplay (GstGLImageSink * gl_sink)
2298 GstGLWindow *window;
2299 GstBuffer *old_stored_buffer[2], *old_sync;
2302 window = gst_gl_context_get_window (gl_sink->context);
2307 g_signal_handler_find (GST_ELEMENT_PARENT (gl_sink), G_SIGNAL_MATCH_ID,
2308 gst_gl_image_sink_bin_signals[SIGNAL_BIN_CLIENT_DRAW], 0,
2311 if (G_UNLIKELY (!gl_sink->redisplay_shader) && (!handler_id
2312 || !gl_sink->other_context)) {
2313 gst_gl_window_send_message (window,
2314 GST_GL_WINDOW_CB (gst_glimage_sink_thread_init_redisplay), gl_sink);
2316 /* if the shader is still null it means it failed to be useable */
2317 if (G_UNLIKELY (!gl_sink->redisplay_shader)) {
2318 gst_object_unref (window);
2322 gst_gl_window_set_preferred_size (window, GST_VIDEO_SINK_WIDTH (gl_sink),
2323 GST_VIDEO_SINK_HEIGHT (gl_sink));
2324 gst_gl_window_show (window);
2327 /* Recreate the output texture if needed */
2328 GST_GLIMAGE_SINK_LOCK (gl_sink);
2329 if (gl_sink->window_resized) {
2330 gl_sink->window_resized = FALSE;
2331 GST_GLIMAGE_SINK_UNLOCK (gl_sink);
2332 GST_DEBUG_OBJECT (gl_sink, "Sending reconfigure event on sinkpad.");
2333 gst_pad_push_event (GST_BASE_SINK (gl_sink)->sinkpad,
2334 gst_event_new_reconfigure ());
2335 GST_GLIMAGE_SINK_LOCK (gl_sink);
2338 if (gl_sink->output_mode_changed && gl_sink->input_buffer != NULL) {
2339 GST_DEBUG ("Recreating output after mode/size change");
2340 update_output_format (gl_sink);
2341 prepare_next_buffer (gl_sink);
2344 if (gl_sink->next_buffer == NULL) {
2345 /* Nothing to display yet */
2346 GST_GLIMAGE_SINK_UNLOCK (gl_sink);
2347 gst_object_unref (window);
2351 /* Avoid to release the texture while drawing */
2352 gl_sink->redisplay_texture = gl_sink->next_tex;
2353 old_stored_buffer[0] = gl_sink->stored_buffer[0];
2354 old_stored_buffer[1] = gl_sink->stored_buffer[1];
2355 gl_sink->stored_buffer[0] = gst_buffer_ref (gl_sink->next_buffer);
2356 if (gl_sink->next_buffer2)
2357 gl_sink->stored_buffer[1] = gst_buffer_ref (gl_sink->next_buffer2);
2359 gl_sink->stored_buffer[1] = NULL;
2361 old_sync = gl_sink->stored_sync;
2362 if (gl_sink->next_sync)
2363 gl_sink->stored_sync = gst_buffer_ref (gl_sink->next_sync);
2365 gl_sink->stored_sync = NULL;
2366 gl_sink->stored_sync_meta = gl_sink->next_sync_meta;
2367 GST_GLIMAGE_SINK_UNLOCK (gl_sink);
2369 gst_buffer_replace (old_stored_buffer, NULL);
2370 gst_buffer_replace (old_stored_buffer + 1, NULL);
2372 gst_buffer_unref (old_sync);
2374 /* Drawing is asynchronous: gst_gl_window_draw is not blocking
2375 * It means that it does not wait for stuff to be executed in other threads
2377 gst_gl_window_draw (window);
2378 gst_object_unref (window);