1 /*
2 * GStreamer
3 * Copyright (C) 2013 Sebastian Dröge <slomo@circular-chaos.org>
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 <gmodule.h>
26
27 /* FIXME: Sharing contexts requires the EGLDisplay to be the same
28 * may need to box it.
29 */
30
31 #include "gstglcontext_egl.h"
32
33 #include <gst/gl/gl.h>
34 #include <gst/gl/gstglcontext_private.h>
35
36 #include "gstegl.h"
37 #include "../utils/opengl_versions.h"
38 #include "../utils/gles_versions.h"
39
40 #if GST_GL_HAVE_WINDOW_X11
41 #include "../x11/gstglwindow_x11.h"
42 #include <gst/gl/x11/gstgldisplay_x11.h>
43 #endif
44 #if GST_GL_HAVE_WINDOW_WAYLAND
45 #include "../wayland/gstglwindow_wayland_egl.h"
46 #endif
47 #if GST_GL_HAVE_WINDOW_WIN32
48 #include "../win32/gstglwindow_win32.h"
49 #endif
50 #if GST_GL_HAVE_WINDOW_DISPMANX
51 #include "../dispmanx/gstglwindow_dispmanx_egl.h"
52 #endif
53 #if GST_GL_HAVE_WINDOW_GBM
54 #include "../gbm/gstglwindow_gbm_egl.h"
55 #endif
56 #if GST_GL_HAVE_WINDOW_VIV_FB
57 #include "../viv-fb/gstglwindow_viv_fb_egl.h"
58 #endif
59
60 #define GST_CAT_DEFAULT gst_gl_context_debug
61
62 static gboolean gst_gl_context_egl_create_context (GstGLContext * context,
63 GstGLAPI gl_api, GstGLContext * other_context, GError ** error);
64 static void gst_gl_context_egl_destroy_context (GstGLContext * context);
65 static gboolean gst_gl_context_egl_choose_format (GstGLContext * context,
66 GError ** error);
67
68 static gboolean gst_gl_context_egl_activate (GstGLContext * context,
69 gboolean activate);
70 static void gst_gl_context_egl_swap_buffers (GstGLContext * context);
71 static guintptr gst_gl_context_egl_get_gl_context (GstGLContext * context);
72 static GstGLAPI gst_gl_context_egl_get_gl_api (GstGLContext * context);
73 static GstGLPlatform gst_gl_context_egl_get_gl_platform (GstGLContext *
74 context);
75 static gboolean gst_gl_context_egl_check_feature (GstGLContext * context,
76 const gchar * feature);
77 static void gst_gl_context_egl_get_gl_platform_version (GstGLContext * context,
78 gint * major, gint * minor);
79 static GstStructure *gst_gl_context_egl_get_config (GstGLContext * context);
80 static gboolean gst_gl_context_egl_request_config (GstGLContext * context,
81 GstStructure * config);
82
83 G_DEFINE_TYPE (GstGLContextEGL, gst_gl_context_egl, GST_TYPE_GL_CONTEXT);
84
85 static void
gst_gl_context_egl_class_init(GstGLContextEGLClass * klass)86 gst_gl_context_egl_class_init (GstGLContextEGLClass * klass)
87 {
88 GstGLContextClass *context_class = (GstGLContextClass *) klass;
89
90 context_class->get_gl_context =
91 GST_DEBUG_FUNCPTR (gst_gl_context_egl_get_gl_context);
92 context_class->activate = GST_DEBUG_FUNCPTR (gst_gl_context_egl_activate);
93 context_class->create_context =
94 GST_DEBUG_FUNCPTR (gst_gl_context_egl_create_context);
95 context_class->destroy_context =
96 GST_DEBUG_FUNCPTR (gst_gl_context_egl_destroy_context);
97 context_class->choose_format =
98 GST_DEBUG_FUNCPTR (gst_gl_context_egl_choose_format);
99 context_class->swap_buffers =
100 GST_DEBUG_FUNCPTR (gst_gl_context_egl_swap_buffers);
101
102 context_class->get_gl_api = GST_DEBUG_FUNCPTR (gst_gl_context_egl_get_gl_api);
103 context_class->get_gl_platform =
104 GST_DEBUG_FUNCPTR (gst_gl_context_egl_get_gl_platform);
105 context_class->get_proc_address =
106 GST_DEBUG_FUNCPTR (gst_gl_context_egl_get_proc_address);
107 context_class->check_feature =
108 GST_DEBUG_FUNCPTR (gst_gl_context_egl_check_feature);
109 context_class->get_current_context =
110 GST_DEBUG_FUNCPTR (gst_gl_context_egl_get_current_context);
111 context_class->get_gl_platform_version =
112 GST_DEBUG_FUNCPTR (gst_gl_context_egl_get_gl_platform_version);
113 context_class->get_config = GST_DEBUG_FUNCPTR (gst_gl_context_egl_get_config);
114 context_class->request_config =
115 GST_DEBUG_FUNCPTR (gst_gl_context_egl_request_config);
116 }
117
118 static void
gst_gl_context_egl_init(GstGLContextEGL * context)119 gst_gl_context_egl_init (GstGLContextEGL * context)
120 {
121 }
122
123 /* Must be called in the gl thread */
124 GstGLContextEGL *
gst_gl_context_egl_new(GstGLDisplay * display)125 gst_gl_context_egl_new (GstGLDisplay * display)
126 {
127 GstGLContextEGL *context;
128
129 /* XXX: display type could theoretically be anything, as long as
130 * eglGetDisplay supports it. */
131 context = g_object_new (GST_TYPE_GL_CONTEXT_EGL, NULL);
132 gst_object_ref_sink (context);
133
134 return context;
135 }
136
137 static gboolean
gst_gl_context_egl_choose_format(GstGLContext * context,GError ** error)138 gst_gl_context_egl_choose_format (GstGLContext * context, GError ** error)
139 {
140 #if GST_GL_HAVE_WINDOW_X11
141 if (GST_IS_GL_WINDOW_X11 (context->window)) {
142 GstGLWindow *window = gst_gl_context_get_window (context);
143 GstGLWindowX11 *window_x11 = GST_GL_WINDOW_X11 (window);
144 gint ret;
145
146 window_x11->visual_info = g_new0 (XVisualInfo, 1);
147 ret = XMatchVisualInfo (window_x11->device, window_x11->screen_num,
148 window_x11->depth, TrueColor, window_x11->visual_info);
149
150 gst_object_unref (window);
151
152 if (ret == 0) {
153 g_set_error (error, GST_GL_CONTEXT_ERROR,
154 GST_GL_CONTEXT_ERROR_WRONG_CONFIG, "Failed to match XVisualInfo");
155 return FALSE;
156 }
157 }
158 #endif
159
160 return TRUE;
161 }
162
163 static GstGLAPI
egl_conformant_to_gst(int conformant)164 egl_conformant_to_gst (int conformant)
165 {
166 GstGLAPI ret = GST_GL_API_NONE;
167
168 if (conformant & EGL_OPENGL_BIT)
169 ret |= GST_GL_API_OPENGL | GST_GL_API_OPENGL3;
170 if (conformant & EGL_OPENGL_ES_BIT)
171 ret |= GST_GL_API_GLES1;
172 if (conformant & EGL_OPENGL_ES2_BIT)
173 ret |= GST_GL_API_GLES2;
174 #if defined(EGL_KHR_create_context)
175 if (conformant & EGL_OPENGL_ES3_BIT_KHR)
176 /* FIXME: need another gles3 value? */
177 ret |= GST_GL_API_GLES2;
178 #endif
179 #if 0
180 if (conformant & EGL_OPENVG_BIT)
181 conformant_values[i++] = "OpenVG";
182 #endif
183
184 return ret;
185 }
186
187 static GstGLConfigSurfaceType
egl_surface_type_to_gst(int surface)188 egl_surface_type_to_gst (int surface)
189 {
190 GstGLConfigSurfaceType ret = GST_GL_CONFIG_SURFACE_TYPE_NONE;
191
192 if (surface & EGL_WINDOW_BIT)
193 ret |= GST_GL_CONFIG_SURFACE_TYPE_WINDOW;
194 if (surface & EGL_PBUFFER_BIT)
195 ret |= GST_GL_CONFIG_SURFACE_TYPE_PBUFFER;
196 #if 0
197 if (surface & EGL_MULTISAMPLE_RESOLVE_BOX_BIT)
198 surface_values[i++] = "multisample-resolve-box";
199 if (surface & EGL_SWAP_BEHAVIOR_PRESERVED_BIT)
200 surface_values[i++] = "swap-behaviour-preserved";
201 if (surface & EGL_VG_ALPHA_FORMAT_PRE_BIT)
202 surface_values[i++] = "vg-alpha-format-pre";
203 if (surface & EGL_VG_COLORSPACE_LINEAR_BIT)
204 surface_values[i++] = "vg-colorspace-linear";
205 #endif
206 return ret;
207 }
208
209 static GstGLConfigCaveat
egl_caveat_to_gst(int caveat)210 egl_caveat_to_gst (int caveat)
211 {
212 switch (caveat) {
213 case EGL_NONE:
214 return GST_GL_CONFIG_CAVEAT_NONE;
215 case EGL_SLOW_CONFIG:
216 return GST_GL_CONFIG_CAVEAT_SLOW;
217 case EGL_NON_CONFORMANT_CONFIG:
218 return GST_GL_CONFIG_CAVEAT_NON_CONFORMANT;
219 default:
220 GST_WARNING ("unknown EGL caveat value %u (0x%x)", caveat, caveat);
221 return GST_GL_CONFIG_CAVEAT_NON_CONFORMANT;
222 }
223 }
224
225 static GstStructure *
egl_config_to_structure(EGLDisplay egl_display,EGLConfig config)226 egl_config_to_structure (EGLDisplay egl_display, EGLConfig config)
227 {
228 GstStructure *ret;
229 int val;
230 int buffer_type;
231
232 if (!egl_display)
233 return NULL;
234
235 ret = gst_structure_new (GST_GL_CONFIG_STRUCTURE_NAME,
236 GST_GL_CONFIG_STRUCTURE_SET_ARGS (PLATFORM, GstGLPlatform,
237 GST_GL_PLATFORM_EGL), NULL);
238
239 if (!eglGetConfigAttrib (egl_display, config, EGL_CONFIG_ID, &val))
240 goto failure;
241 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (CONFIG_ID, int,
242 val), NULL);
243
244 #if 0
245 {
246 /* Don't know how to translate this value, it's platform and implementation
247 * dependant
248 */
249 int native_visual_type;
250 if (!eglGetConfigAttrib (egl_display, config, EGL_NATIVE_VISUAL_TYPE,
251 &native_visual_type))
252 goto failure;
253 }
254 #endif
255
256 if (!eglGetConfigAttrib (egl_display, config, EGL_NATIVE_VISUAL_ID, &val))
257 goto failure;
258 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (NATIVE_VISUAL_ID,
259 guint, val), NULL);
260
261 if (!eglGetConfigAttrib (egl_display, config, EGL_NATIVE_RENDERABLE, &val))
262 goto failure;
263 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (NATIVE_RENDERABLE,
264 gboolean, val), NULL);
265
266 if (!eglGetConfigAttrib (egl_display, config, EGL_CONFORMANT, &val))
267 goto failure;
268 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (CONFORMANT_API,
269 GstGLAPI, egl_conformant_to_gst (val)), NULL);
270
271 if (!eglGetConfigAttrib (egl_display, config, EGL_RENDERABLE_TYPE, &val))
272 goto failure;
273 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (RENDERABLE_API,
274 GstGLAPI, egl_conformant_to_gst (val)), NULL);
275
276 if (!eglGetConfigAttrib (egl_display, config, EGL_SURFACE_TYPE, &val))
277 goto failure;
278 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (SURFACE_TYPE,
279 GstGLConfigSurfaceType, egl_surface_type_to_gst (val)), NULL);
280
281 if (!eglGetConfigAttrib (egl_display, config, EGL_CONFIG_CAVEAT, &val))
282 goto failure;
283 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (CAVEAT,
284 GstGLConfigCaveat, egl_caveat_to_gst (val)), NULL);
285
286 if (!eglGetConfigAttrib (egl_display, config, EGL_LEVEL, &val))
287 goto failure;
288 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (LEVEL, int, val),
289 NULL);
290
291
292 if (!eglGetConfigAttrib (egl_display, config, EGL_COLOR_BUFFER_TYPE,
293 &buffer_type))
294 goto failure;
295
296 if (buffer_type == EGL_RGB_BUFFER) {
297 if (!eglGetConfigAttrib (egl_display, config, EGL_RED_SIZE, &val))
298 goto failure;
299 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (RED_SIZE, int,
300 val), NULL);
301
302 if (!eglGetConfigAttrib (egl_display, config, EGL_GREEN_SIZE, &val))
303 goto failure;
304 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (GREEN_SIZE, int,
305 val), NULL);
306
307 if (!eglGetConfigAttrib (egl_display, config, EGL_BLUE_SIZE, &val))
308 goto failure;
309 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (BLUE_SIZE, int,
310 val), NULL);
311
312 if (!eglGetConfigAttrib (egl_display, config, EGL_ALPHA_SIZE, &val))
313 goto failure;
314 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (ALPHA_SIZE, int,
315 val), NULL);
316 } else if (buffer_type == EGL_LUMINANCE_BUFFER) {
317 if (!eglGetConfigAttrib (egl_display, config, EGL_LUMINANCE_SIZE, &val))
318 goto failure;
319 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (LUMINANCE_SIZE,
320 int, val), NULL);
321
322 if (!eglGetConfigAttrib (egl_display, config, EGL_ALPHA_SIZE, &val))
323 goto failure;
324 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (ALPHA_SIZE, int,
325 val), NULL);
326 } else {
327 GST_WARNING ("unknown EGL_COLOR_BUFFER_TYPE value %x", buffer_type);
328 goto failure;
329 }
330
331 if (!eglGetConfigAttrib (egl_display, config, EGL_DEPTH_SIZE, &val))
332 goto failure;
333 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (DEPTH_SIZE, int,
334 val), NULL);
335
336 if (!eglGetConfigAttrib (egl_display, config, EGL_STENCIL_SIZE, &val))
337 goto failure;
338 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (STENCIL_SIZE, int,
339 val), NULL);
340
341 if (!eglGetConfigAttrib (egl_display, config, EGL_MIN_SWAP_INTERVAL, &val))
342 goto failure;
343 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (MIN_SWAP_INTERVAL,
344 int, val), NULL);
345
346 if (!eglGetConfigAttrib (egl_display, config, EGL_MAX_SWAP_INTERVAL, &val))
347 goto failure;
348 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (MAX_SWAP_INTERVAL,
349 int, val), NULL);
350
351 if (!eglGetConfigAttrib (egl_display, config, EGL_MAX_PBUFFER_WIDTH, &val))
352 goto failure;
353 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (MAX_PBUFFER_WIDTH,
354 int, val), NULL);
355
356 if (!eglGetConfigAttrib (egl_display, config, EGL_MAX_PBUFFER_HEIGHT, &val))
357 goto failure;
358 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (MAX_PBUFFER_HEIGHT,
359 int, val), NULL);
360
361 if (!eglGetConfigAttrib (egl_display, config, EGL_MAX_PBUFFER_PIXELS, &val))
362 goto failure;
363 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (MAX_PBUFFER_PIXELS,
364 int, val), NULL);
365
366 if (!eglGetConfigAttrib (egl_display, config, EGL_SAMPLE_BUFFERS, &val))
367 goto failure;
368 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (SAMPLE_BUFFERS, int,
369 val), NULL);
370
371 if (!eglGetConfigAttrib (egl_display, config, EGL_SAMPLES, &val))
372 goto failure;
373 gst_structure_set (ret, GST_GL_CONFIG_STRUCTURE_SET_ARGS (SAMPLES, int, val),
374 NULL);
375
376 return ret;
377
378 failure:
379 gst_structure_free (ret);
380 return NULL;
381 }
382
383 static void
gst_gl_context_egl_dump_config(GstGLContextEGL * egl,EGLConfig config)384 gst_gl_context_egl_dump_config (GstGLContextEGL * egl, EGLConfig config)
385 {
386 int id;
387 int buffer_type;
388
389 if (!egl->egl_display)
390 return;
391
392 {
393 int native_visual_id, native_visual_type;
394 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_CONFIG_ID, &id))
395 return;
396 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_NATIVE_VISUAL_ID,
397 &native_visual_id))
398 return;
399 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_NATIVE_VISUAL_TYPE,
400 &native_visual_type))
401 return;
402 GST_DEBUG_OBJECT (egl, "dumping EGLConfig %p with id 0x%x and "
403 "native visual id 0x%x of type 0x%x", config, id, native_visual_id,
404 native_visual_type);
405 }
406
407 {
408 #define MAX_CONFORMANT 8
409 int conformant, i = 0;
410 const char *conformant_values[MAX_CONFORMANT] = { NULL, };
411 char *conformant_str = NULL;;
412
413 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_CONFORMANT,
414 &conformant))
415 return;
416
417 if (conformant & EGL_OPENGL_BIT)
418 conformant_values[i++] = "OpenGL";
419 if (conformant & EGL_OPENGL_ES_BIT)
420 conformant_values[i++] = "OpenGL ES";
421 if (conformant & EGL_OPENGL_ES2_BIT)
422 conformant_values[i++] = "OpenGL ES 2.x";
423 #if defined(EGL_KHR_create_context)
424 if (conformant & EGL_OPENGL_ES3_BIT_KHR)
425 conformant_values[i++] = "OpenGL ES 3.x";
426 #endif
427 if (conformant & EGL_OPENVG_BIT)
428 conformant_values[i++] = "OpenVG";
429
430 /* bad things have happened if this fails: we haven't allocated enough
431 * space to hold all the values */
432 g_assert (i < MAX_CONFORMANT);
433
434 conformant_str = g_strjoinv ("|", (char **) conformant_values);
435 GST_DEBUG_OBJECT (egl, "Conformant for %s", conformant_str);
436 g_free (conformant_str);
437 #undef MAX_CONFORMANT
438 }
439
440 {
441 #define MAX_RENDERABLE 8
442 int renderable, i = 0;
443 const char *renderable_values[MAX_RENDERABLE] = { NULL, };
444 char *renderable_str = NULL;
445
446 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_RENDERABLE_TYPE,
447 &renderable))
448 return;
449
450 if (renderable & EGL_OPENGL_BIT)
451 renderable_values[i++] = "OpenGL";
452 if (renderable & EGL_OPENGL_ES_BIT)
453 renderable_values[i++] = "OpenGL ES";
454 if (renderable & EGL_OPENGL_ES2_BIT)
455 renderable_values[i++] = "OpenGL ES 2.x";
456 #if defined(EGL_KHR_create_context)
457 if (renderable & EGL_OPENGL_ES3_BIT_KHR)
458 renderable_values[i++] = "OpenGL ES 3.x";
459 #endif
460 if (renderable & EGL_OPENVG_BIT)
461 renderable_values[i++] = "OpenVG";
462
463 /* bad things have happened if this fails: we haven't allocated enough
464 * space to hold all the values */
465 g_assert (i < MAX_RENDERABLE);
466
467 renderable_str = g_strjoinv ("|", (char **) renderable_values);
468 GST_DEBUG_OBJECT (egl, "Renderable for %s", renderable_str);
469 g_free (renderable_str);
470 #undef MAX_RENDERABLE
471 }
472
473 {
474 #define MAX_SURFACE 8
475 int surface, i = 0;
476 const char *surface_values[MAX_SURFACE] = { NULL, };
477 char *surface_str = NULL;
478
479 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_SURFACE_TYPE,
480 &surface))
481 return;
482
483 if (surface & EGL_WINDOW_BIT)
484 surface_values[i++] = "window";
485 if (surface & EGL_PBUFFER_BIT)
486 surface_values[i++] = "pbuffer";
487 if (surface & EGL_MULTISAMPLE_RESOLVE_BOX_BIT)
488 surface_values[i++] = "multisample-resolve-box";
489 if (surface & EGL_SWAP_BEHAVIOR_PRESERVED_BIT)
490 surface_values[i++] = "swap-behaviour-preserved";
491 if (surface & EGL_VG_ALPHA_FORMAT_PRE_BIT)
492 surface_values[i++] = "vg-alpha-format-pre";
493 if (surface & EGL_VG_COLORSPACE_LINEAR_BIT)
494 surface_values[i++] = "vg-colorspace-linear";
495
496 /* bad things have happened if this fails: we haven't allocated enough
497 * space to hold all the values */
498 g_assert (i < MAX_SURFACE);
499
500 surface_str = g_strjoinv ("|", (char **) surface_values);
501 GST_DEBUG_OBJECT (egl, "Surface for (0x%x) %s", surface, surface_str);
502 g_free (surface_str);
503 #undef MAX_RENDERABLE
504 }
505
506 {
507 #define MAX_CAVEAT 8
508 int caveat, i = 0;
509 const char *caveat_values[MAX_CAVEAT] = { NULL, };
510 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_CONFIG_CAVEAT,
511 &caveat))
512 return;
513 if (caveat == EGL_SLOW_CONFIG) {
514 caveat_values[i++] = "slow";
515 } else if (caveat == EGL_NON_CONFORMANT_CONFIG) {
516 caveat_values[i++] = "non-conformant";
517 }
518 if (i > 0) {
519 char *caveat_str = g_strjoinv ("|", (char **) caveat_values);
520 GST_DEBUG_OBJECT (egl, "Advertised as %s", caveat_str);
521 g_free (caveat_str);
522 }
523 #undef MAX_CAVEAT
524 }
525
526 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_COLOR_BUFFER_TYPE,
527 &buffer_type))
528 return;
529 if (buffer_type == EGL_RGB_BUFFER) {
530 int red, blue, green, alpha;
531
532 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_RED_SIZE, &red))
533 return;
534 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_GREEN_SIZE, &green))
535 return;
536 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_BLUE_SIZE, &blue))
537 return;
538 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_ALPHA_SIZE, &alpha))
539 return;
540
541 GST_DEBUG_OBJECT (egl, "[R, G, B, A] = [%i, %i, %i, %i]", red, green, blue,
542 alpha);
543 } else if (buffer_type == EGL_LUMINANCE_BUFFER) {
544 int luminance, alpha;
545 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_LUMINANCE_SIZE,
546 &luminance))
547 return;
548 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_ALPHA_SIZE, &alpha))
549 return;
550 GST_DEBUG_OBJECT (egl, "[L, A] = [%i, %i]", luminance, alpha);
551 } else {
552 GST_WARNING_OBJECT (egl, "unknown EGL_COLOR_BUFFER_TYPE value %x",
553 buffer_type);
554 return;
555 }
556 {
557 int depth, stencil;
558 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_DEPTH_SIZE, &depth))
559 return;
560 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_STENCIL_SIZE,
561 &stencil))
562 return;
563 GST_DEBUG_OBJECT (egl, "[D, S] = [%i, %i]", depth, stencil);
564 }
565 {
566 int min, max;
567
568 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_MIN_SWAP_INTERVAL,
569 &min))
570 return;
571 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_MAX_SWAP_INTERVAL,
572 &max))
573 return;
574 GST_DEBUG_OBJECT (egl, "Swap interval range is [%i, %i]", min, max);
575 }
576 {
577 int width, height, pixels;
578
579 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_MAX_PBUFFER_WIDTH,
580 &width))
581 return;
582 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_MAX_PBUFFER_HEIGHT,
583 &height))
584 return;
585 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_MAX_PBUFFER_PIXELS,
586 &pixels))
587 return;
588 GST_DEBUG_OBJECT (egl,
589 "PBuffer maximum dimensions are [%i, %i]. Max pixels are %i", width,
590 height, pixels);
591 }
592 {
593 int sample_buffers, samples_per_pixel;
594
595 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_SAMPLE_BUFFERS,
596 &sample_buffers))
597 return;
598 if (!eglGetConfigAttrib (egl->egl_display, config, EGL_SAMPLES,
599 &samples_per_pixel))
600 return;
601 GST_DEBUG_OBJECT (egl, "Multisample buffers: %i and Samples per pixel: %i",
602 sample_buffers, samples_per_pixel);
603 }
604 }
605
606 static void
gst_gl_context_egl_dump_all_configs(GstGLContextEGL * egl)607 gst_gl_context_egl_dump_all_configs (GstGLContextEGL * egl)
608 {
609 int i, n;
610 EGLConfig *configs;
611
612 if (!eglGetConfigs (egl->egl_display, NULL, 0, &n)) {
613 GST_WARNING_OBJECT (egl, "Failed to get number of EGLConfig's");
614 return;
615 }
616
617 configs = g_new0 (EGLConfig, n);
618 if (!eglGetConfigs (egl->egl_display, configs, n, &n)) {
619 GST_WARNING_OBJECT (egl, "Failed to get the list of EGLConfig's");
620 goto out;
621 }
622
623 for (i = 0; i < n; i++)
624 gst_gl_context_egl_dump_config (egl, configs[i]);
625
626 out:
627 g_free (configs);
628 }
629
630 static gboolean
gst_gl_context_egl_choose_config(GstGLContextEGL * egl,GstGLAPI gl_api,gint major,GError ** error)631 gst_gl_context_egl_choose_config (GstGLContextEGL * egl, GstGLAPI gl_api,
632 gint major, GError ** error)
633 {
634 gboolean create_context;
635 EGLint numConfigs;
636 gint i, n;
637 EGLint config_attrib[20];
638 EGLint egl_api = 0;
639 EGLBoolean ret = EGL_FALSE;
640 EGLint surface_type = EGL_WINDOW_BIT;
641 EGLint alpha_size = 1;
642 GstGLWindow *window;
643
644 window = gst_gl_context_get_window (GST_GL_CONTEXT (egl));
645
646 if (!window || !gst_gl_window_has_output_surface (window)) {
647 GST_INFO_OBJECT (egl,
648 "gl window has no output surface, use pixel buffer surfaces");
649 surface_type = EGL_PBUFFER_BIT;
650 }
651
652 if (window)
653 gst_object_unref (window);
654
655 create_context =
656 gst_gl_check_extension ("EGL_KHR_create_context", egl->egl_exts);
657 /* silence unused warnings */
658 (void) create_context;
659
660 if (gl_api & GST_GL_API_GLES2) {
661 if (major == 3) {
662 #if defined(EGL_KHR_create_context)
663 if (create_context) {
664 egl_api = EGL_OPENGL_ES3_BIT_KHR;
665 } else
666 #endif
667 {
668 return FALSE;
669 }
670 } else {
671 egl_api = EGL_OPENGL_ES2_BIT;
672 }
673 } else
674 egl_api = EGL_OPENGL_BIT;
675
676 try_again:
677 i = 0;
678 n = G_N_ELEMENTS (config_attrib);
679 config_attrib[i++] = EGL_SURFACE_TYPE;
680 config_attrib[i++] = surface_type;
681 config_attrib[i++] = EGL_RENDERABLE_TYPE;
682 config_attrib[i++] = egl_api;
683
684 if (egl->requested_config) {
685 #define TRANSFORM_VALUE(GL_CONF_NAME,EGL_ATTR_NAME) \
686 G_STMT_START { \
687 if (gst_structure_has_field_typed (egl->requested_config, \
688 GST_GL_CONFIG_ATTRIB_NAME(GL_CONF_NAME), \
689 GST_GL_CONFIG_ATTRIB_GTYPE(GL_CONF_NAME))) { \
690 int val; \
691 if (gst_structure_get (egl->requested_config, \
692 GST_GL_CONFIG_ATTRIB_NAME(GL_CONF_NAME), \
693 GST_GL_CONFIG_ATTRIB_GTYPE(GL_CONF_NAME), &val, NULL)) { \
694 config_attrib[i++] = EGL_ATTR_NAME; \
695 config_attrib[i++] = (int) val; \
696 g_assert (i <= n); \
697 } \
698 } \
699 } G_STMT_END
700
701 TRANSFORM_VALUE (CONFIG_ID, EGL_CONFIG_ID);
702 TRANSFORM_VALUE (RED_SIZE, EGL_RED_SIZE);
703 TRANSFORM_VALUE (GREEN_SIZE, EGL_GREEN_SIZE);
704 TRANSFORM_VALUE (BLUE_SIZE, EGL_BLUE_SIZE);
705 TRANSFORM_VALUE (ALPHA_SIZE, EGL_ALPHA_SIZE);
706 TRANSFORM_VALUE (DEPTH_SIZE, EGL_DEPTH_SIZE);
707 TRANSFORM_VALUE (STENCIL_SIZE, EGL_STENCIL_SIZE);
708 /* TODO: more values */
709 #undef TRANSFORM_VALUE
710 } else {
711 config_attrib[i++] = EGL_DEPTH_SIZE;
712 config_attrib[i++] = 16;
713 config_attrib[i++] = EGL_RED_SIZE;
714 config_attrib[i++] = 1;
715 config_attrib[i++] = EGL_GREEN_SIZE;
716 config_attrib[i++] = 1;
717 config_attrib[i++] = EGL_BLUE_SIZE;
718 config_attrib[i++] = 1;
719 config_attrib[i++] = EGL_ALPHA_SIZE;
720 config_attrib[i++] = alpha_size;
721 }
722
723 config_attrib[i++] = EGL_NONE;
724 g_assert (i <= n);
725
726 ret = eglChooseConfig (egl->egl_display, config_attrib,
727 &egl->egl_config, 1, &numConfigs);
728
729 if (ret && numConfigs == 0) {
730 if (surface_type == EGL_PBUFFER_BIT) {
731 surface_type = EGL_WINDOW_BIT;
732 GST_TRACE_OBJECT (egl, "Retrying config with window bit");
733 goto try_again;
734 }
735
736 if (alpha_size == 1) {
737 alpha_size = 0;
738 GST_TRACE_OBJECT (egl, "Retrying config not forcing an alpha channel");
739 goto try_again;
740 }
741 }
742
743 if (ret && numConfigs == 1) {
744 GST_INFO ("config set: %" G_GUINTPTR_FORMAT ", %u",
745 (guintptr) egl->egl_config, (unsigned int) numConfigs);
746 } else {
747 if (!ret) {
748 g_set_error (error, GST_GL_CONTEXT_ERROR,
749 GST_GL_CONTEXT_ERROR_WRONG_CONFIG, "Failed to choose EGLConfig: %s",
750 gst_egl_get_error_string (eglGetError ()));
751 } else if (numConfigs <= 1) {
752 g_set_error_literal (error, GST_GL_CONTEXT_ERROR,
753 GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
754 "Could not find a compatible EGLConfig:");
755 } else {
756 g_warn_if_reached ();
757 }
758 goto failure;
759 }
760
761 GST_DEBUG_OBJECT (egl, "chosen EGLConfig:");
762 gst_gl_context_egl_dump_config (egl, egl->egl_config);
763
764 return TRUE;
765
766 failure:
767 return FALSE;
768 }
769
770 static EGLContext
_create_context_with_flags(GstGLContextEGL * egl,EGLContext share_context,GstGLAPI gl_api,gint major,gint minor,gint contextFlags,gint profileMask)771 _create_context_with_flags (GstGLContextEGL * egl, EGLContext share_context,
772 GstGLAPI gl_api, gint major, gint minor, gint contextFlags,
773 gint profileMask)
774 {
775 gboolean create_context;
776 #define N_ATTRIBS 20
777 gint attribs[N_ATTRIBS];
778 gint n = 0;
779
780 /* fail creation of apis/versions/flags that require EGL_KHR_create_context
781 * if the extension doesn't exist, namely:0
782 *
783 * - profile mask
784 * - context flags
785 * - GL3 > 3.1
786 * - GLES2 && minor > 0
787 */
788 create_context =
789 gst_gl_check_extension ("EGL_KHR_create_context", egl->egl_exts);
790 (void) create_context;
791 if (!create_context && (profileMask || contextFlags
792 || ((gl_api & GST_GL_API_OPENGL3)
793 && GST_GL_CHECK_GL_VERSION (major, minor, 3, 2))
794 || ((gl_api & GST_GL_API_GLES2) && minor > 0))) {
795 return 0;
796 }
797
798 GST_DEBUG_OBJECT (egl, "attempting to create OpenGL%s context version %d.%d "
799 "flags %x profile %x", gl_api & GST_GL_API_GLES2 ? " ES" : "", major,
800 minor, contextFlags, profileMask);
801
802 #if defined(EGL_KHR_create_context)
803 if (create_context) {
804 if (major) {
805 attribs[n++] = EGL_CONTEXT_MAJOR_VERSION_KHR;
806 attribs[n++] = major;
807 }
808 if (minor) {
809 attribs[n++] = EGL_CONTEXT_MINOR_VERSION_KHR;
810 attribs[n++] = minor;
811 }
812 if (contextFlags) {
813 attribs[n++] = EGL_CONTEXT_FLAGS_KHR;
814 attribs[n++] = contextFlags;
815 }
816 if (profileMask) {
817 attribs[n++] = EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR;
818 attribs[n++] = profileMask;
819 }
820 } else
821 #endif
822 {
823 attribs[n++] = EGL_CONTEXT_CLIENT_VERSION;
824 attribs[n++] = major;
825 }
826 attribs[n++] = EGL_NONE;
827
828 g_assert (n < N_ATTRIBS);
829 #undef N_ATTRIBS
830
831 return eglCreateContext (egl->egl_display, egl->egl_config, share_context,
832 attribs);
833 }
834
835 static void
gst_gl_context_egl_window_handle_changed_cb(GstGLContextEGL * egl,GstGLWindow * window)836 gst_gl_context_egl_window_handle_changed_cb (GstGLContextEGL * egl,
837 GstGLWindow * window)
838 {
839 if (egl->egl_surface != EGL_NO_SURFACE) {
840 if (!eglDestroySurface (egl->egl_display, egl->egl_surface))
841 GST_WARNING_OBJECT (egl, "Failed to destroy old window surface: %s",
842 gst_egl_get_error_string (eglGetError ()));
843 egl->egl_surface = EGL_NO_SURFACE;
844 }
845 }
846
847 static gboolean
gst_gl_context_egl_create_context(GstGLContext * context,GstGLAPI gl_api,GstGLContext * other_context,GError ** error)848 gst_gl_context_egl_create_context (GstGLContext * context,
849 GstGLAPI gl_api, GstGLContext * other_context, GError ** error)
850 {
851 GstGLContextEGL *egl;
852 GstGLWindow *window = NULL;
853 guintptr window_handle = 0;
854 EGLint egl_major;
855 EGLint egl_minor;
856 gboolean need_surface = TRUE;
857 guintptr external_gl_context = 0;
858 guintptr egl_display;
859
860 egl = GST_GL_CONTEXT_EGL (context);
861 window = gst_gl_context_get_window (context);
862
863 GST_DEBUG_OBJECT (context, "Creating EGL context");
864
865 if (other_context) {
866 if (gst_gl_context_get_gl_platform (other_context) != GST_GL_PLATFORM_EGL) {
867 g_set_error (error, GST_GL_CONTEXT_ERROR,
868 GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
869 "Cannot share context with non-EGL context");
870 goto failure;
871 }
872 external_gl_context = gst_gl_context_get_gl_context (other_context);
873 }
874
875 if ((gl_api & (GST_GL_API_OPENGL | GST_GL_API_OPENGL3 | GST_GL_API_GLES2)) ==
876 GST_GL_API_NONE) {
877 g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_WRONG_API,
878 "EGL supports opengl or gles2");
879 goto failure;
880 }
881
882 if (!egl->display_egl) {
883 GstGLDisplay *display = gst_gl_context_get_display (context);
884
885 egl->display_egl = gst_gl_display_egl_from_gl_display (display);
886 if (!egl->display_egl) {
887 g_set_error (error, GST_GL_CONTEXT_ERROR,
888 GST_GL_CONTEXT_ERROR_RESOURCE_UNAVAILABLE,
889 "Failed to create EGLDisplay from native display");
890 gst_object_unref (display);
891 goto failure;
892 }
893
894 gst_object_unref (display);
895 }
896
897 egl_display = gst_gl_display_get_handle (GST_GL_DISPLAY (egl->display_egl));
898 egl->egl_display = (EGLDisplay) egl_display;
899
900 if (eglInitialize (egl->egl_display, &egl_major, &egl_minor)) {
901 GST_INFO ("egl initialized, version: %d.%d", egl_major, egl_minor);
902 } else {
903 g_set_error (error, GST_GL_CONTEXT_ERROR,
904 GST_GL_CONTEXT_ERROR_RESOURCE_UNAVAILABLE,
905 "Failed to initialize egl: %s",
906 gst_egl_get_error_string (eglGetError ()));
907 goto failure;
908 }
909
910 egl->egl_exts = eglQueryString (egl->egl_display, EGL_EXTENSIONS);
911 GST_DEBUG_OBJECT (egl, "Have EGL extensions: %s", egl->egl_exts);
912
913 gst_gl_context_egl_dump_all_configs (egl);
914
915 if (gl_api & (GST_GL_API_OPENGL | GST_GL_API_OPENGL3)) {
916 GstGLAPI chosen_gl_api = 0;
917 gint i;
918
919 /* egl + opengl only available with EGL 1.4+ */
920 if (egl_major == 1 && egl_minor <= 3) {
921 if ((gl_api & ~GST_GL_API_OPENGL) == GST_GL_API_NONE) {
922 g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_OLD_LIBS,
923 "EGL version (%i.%i) too old for OpenGL support, (needed at least 1.4)",
924 egl_major, egl_minor);
925 goto failure;
926 } else {
927 GST_WARNING
928 ("EGL version (%i.%i) too old for OpenGL support, (needed at least 1.4)",
929 egl_major, egl_minor);
930 if (gl_api & GST_GL_API_GLES2) {
931 goto try_gles2;
932 } else {
933 g_set_error (error, GST_GL_CONTEXT_ERROR,
934 GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
935 "Failed to choose a suitable OpenGL API");
936 goto failure;
937 }
938 }
939 }
940
941 if (!eglBindAPI (EGL_OPENGL_API)) {
942 g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
943 "Failed to bind OpenGL API: %s",
944 gst_egl_get_error_string (eglGetError ()));
945 goto failure;
946 }
947
948 GST_INFO ("Bound OpenGL");
949
950 /* api, version only matters for gles */
951 if (!gst_gl_context_egl_choose_config (egl, GST_GL_API_OPENGL, 0, error)) {
952 g_assert (error == NULL || *error != NULL);
953 goto failure;
954 }
955
956 for (i = 0; i < G_N_ELEMENTS (opengl_versions); i++) {
957 gint profileMask = 0;
958 gint contextFlags = 0;
959
960 if (GST_GL_CHECK_GL_VERSION (opengl_versions[i].major,
961 opengl_versions[i].minor, 3, 2)) {
962 /* skip gl3 contexts if requested */
963 if ((gl_api & GST_GL_API_OPENGL3) == 0)
964 continue;
965
966 chosen_gl_api = GST_GL_API_OPENGL3;
967 #if defined(EGL_KHR_create_context)
968 profileMask |= EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR;
969 contextFlags |= EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
970 #endif
971 } else if (opengl_versions[i].major == 3 && opengl_versions[i].minor == 1) {
972 /* skip 3.1, the implementation is free to give us either a core or a
973 * compatibility context (we have no say) */
974 continue;
975 } else {
976 /* skip legacy contexts if requested */
977 if ((gl_api & GST_GL_API_OPENGL) == 0)
978 continue;
979
980 chosen_gl_api = GST_GL_API_OPENGL;
981 }
982
983 egl->egl_context =
984 _create_context_with_flags (egl, (EGLContext) external_gl_context,
985 chosen_gl_api, opengl_versions[i].major,
986 opengl_versions[i].minor, contextFlags, profileMask);
987
988 if (egl->egl_context)
989 break;
990
991 #if defined(EGL_KHR_create_context)
992 profileMask &= ~EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
993
994 egl->egl_context =
995 _create_context_with_flags (egl, (EGLContext) external_gl_context,
996 chosen_gl_api, opengl_versions[i].major,
997 opengl_versions[i].minor, contextFlags, profileMask);
998
999 if (egl->egl_context)
1000 break;
1001 #endif
1002 }
1003
1004 egl->gl_api = chosen_gl_api;
1005 } else if (gl_api & GST_GL_API_GLES2) {
1006 gint i;
1007
1008 try_gles2:
1009 if (!eglBindAPI (EGL_OPENGL_ES_API)) {
1010 g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
1011 "Failed to bind OpenGL|ES API: %s",
1012 gst_egl_get_error_string (eglGetError ()));
1013 goto failure;
1014 }
1015
1016 GST_INFO ("Bound OpenGL|ES");
1017
1018 for (i = 0; i < G_N_ELEMENTS (gles2_versions); i++) {
1019 gint profileMask = 0;
1020 gint contextFlags = 0;
1021 guint maj = gles2_versions[i].major;
1022 guint min = gles2_versions[i].minor;
1023
1024 if (!gst_gl_context_egl_choose_config (egl, GST_GL_API_GLES2, maj, error)) {
1025 GST_DEBUG_OBJECT (context, "Failed to choose a GLES%d config: %s",
1026 maj, error && *error ? (*error)->message : "Unknown");
1027 g_clear_error (error);
1028 continue;
1029 }
1030 #if defined(EGL_KHR_create_context)
1031 /* try a debug context */
1032 contextFlags |= EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
1033
1034 egl->egl_context =
1035 _create_context_with_flags (egl, (EGLContext) external_gl_context,
1036 GST_GL_API_GLES2, maj, min, contextFlags, profileMask);
1037
1038 if (egl->egl_context)
1039 break;
1040
1041 /* try without a debug context */
1042 contextFlags &= ~EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
1043 #endif
1044
1045 egl->egl_context =
1046 _create_context_with_flags (egl, (EGLContext) external_gl_context,
1047 GST_GL_API_GLES2, maj, min, contextFlags, profileMask);
1048
1049 if (egl->egl_context)
1050 break;
1051 }
1052 egl->gl_api = GST_GL_API_GLES2;
1053 }
1054
1055 if (egl->egl_context != EGL_NO_CONTEXT) {
1056 GST_INFO ("gl context created: %" G_GUINTPTR_FORMAT,
1057 (guintptr) egl->egl_context);
1058 } else {
1059 g_set_error (error, GST_GL_CONTEXT_ERROR,
1060 GST_GL_CONTEXT_ERROR_CREATE_CONTEXT,
1061 "Failed to create a OpenGL context: %s",
1062 gst_egl_get_error_string (eglGetError ()));
1063 goto failure;
1064 }
1065 /* FIXME do we want a window vfunc ? */
1066 #if GST_GL_HAVE_WINDOW_X11
1067 if (GST_IS_GL_WINDOW_X11 (context->window)) {
1068 gst_gl_window_x11_create_window ((GstGLWindowX11 *) context->window);
1069 }
1070 #endif
1071
1072 if (other_context == NULL) {
1073 /* FIXME: fails to show two outputs at all. We need a property/option for
1074 * glimagesink to say its a visible context */
1075 #if GST_GL_HAVE_WINDOW_WAYLAND
1076 if (GST_IS_GL_WINDOW_WAYLAND_EGL (context->window)) {
1077 gst_gl_window_wayland_egl_create_window ((GstGLWindowWaylandEGL *)
1078 context->window);
1079 }
1080 #endif
1081 #if GST_GL_HAVE_WINDOW_WIN32
1082 if (GST_IS_GL_WINDOW_WIN32 (context->window)) {
1083 gst_gl_window_win32_create_window ((GstGLWindowWin32 *) context->window,
1084 NULL);
1085 }
1086 #endif
1087 #if GST_GL_HAVE_WINDOW_DISPMANX
1088 if (GST_IS_GL_WINDOW_DISPMANX_EGL (context->window)) {
1089 gst_gl_window_dispmanx_egl_create_window ((GstGLWindowDispmanxEGL *)
1090 context->window);
1091 }
1092 #endif
1093 #if GST_GL_HAVE_WINDOW_GBM
1094 if (GST_IS_GL_WINDOW_GBM_EGL (context->window)) {
1095 gst_gl_window_gbm_egl_create_window ((GstGLWindowGBMEGL *)
1096 context->window);
1097 }
1098 #endif
1099 #if GST_GL_HAVE_WINDOW_VIV_FB
1100 if (GST_IS_GL_WINDOW_VIV_FB_EGL (context->window)) {
1101 gst_gl_window_viv_fb_egl_create_window ((GstGLWindowVivFBEGL *)
1102 context->window);
1103 }
1104 #endif
1105 }
1106
1107 if (window)
1108 window_handle = gst_gl_window_get_window_handle (window);
1109
1110 if (window_handle) {
1111 #if GST_GL_HAVE_WINDOW_WINRT && defined (EGL_ANGLE_SURFACE_RENDER_TO_BACK_BUFFER)
1112 const EGLint attrs[] = {
1113 /* EGL_ANGLE_SURFACE_RENDER_TO_BACK_BUFFER is an optimization that can
1114 * have large performance benefits on mobile devices. */
1115 EGL_ANGLE_SURFACE_RENDER_TO_BACK_BUFFER, EGL_TRUE,
1116 EGL_NONE
1117 };
1118 #else
1119 const EGLint *attrs = NULL;
1120 #endif
1121
1122 GST_DEBUG ("Creating EGLSurface from window_handle %p",
1123 (void *) window_handle);
1124 egl->egl_surface =
1125 eglCreateWindowSurface (egl->egl_display, egl->egl_config,
1126 (EGLNativeWindowType) window_handle, attrs);
1127 } else if (!gst_gl_check_extension ("EGL_KHR_surfaceless_context",
1128 egl->egl_exts)) {
1129 EGLint surface_attrib[7];
1130 gint j = 0;
1131
1132 GST_DEBUG ("Surfaceless context, creating PBufferSurface");
1133 /* FIXME: Width/height doesn't seem to matter but we can't leave them
1134 * at 0, otherwise X11 complains about BadValue */
1135 surface_attrib[j++] = EGL_WIDTH;
1136 surface_attrib[j++] = 1;
1137 surface_attrib[j++] = EGL_HEIGHT;
1138 surface_attrib[j++] = 1;
1139 surface_attrib[j++] = EGL_LARGEST_PBUFFER;
1140 surface_attrib[j++] = EGL_TRUE;
1141 surface_attrib[j++] = EGL_NONE;
1142
1143 egl->egl_surface =
1144 eglCreatePbufferSurface (egl->egl_display, egl->egl_config,
1145 surface_attrib);
1146 } else {
1147 GST_DEBUG ("No surface/handle !");
1148 egl->egl_surface = EGL_NO_SURFACE;
1149 need_surface = FALSE;
1150 }
1151
1152 if (need_surface) {
1153 if (egl->egl_surface != EGL_NO_SURFACE) {
1154 GST_INFO ("surface created");
1155 } else {
1156 g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
1157 "Failed to create window surface: %s",
1158 gst_egl_get_error_string (eglGetError ()));
1159 goto failure;
1160 }
1161 }
1162 egl->egl_major = egl_major;
1163 egl->egl_minor = egl_minor;
1164
1165 if (window) {
1166 egl->window_handle_signal = g_signal_connect_swapped (window,
1167 "window-handle-changed",
1168 G_CALLBACK (gst_gl_context_egl_window_handle_changed_cb), egl);
1169 gst_object_unref (window);
1170 }
1171
1172 return TRUE;
1173
1174 failure:
1175 if (window)
1176 gst_object_unref (window);
1177
1178 return FALSE;
1179 }
1180
1181 static void
gst_gl_context_egl_destroy_context(GstGLContext * context)1182 gst_gl_context_egl_destroy_context (GstGLContext * context)
1183 {
1184 GstGLContextEGL *egl;
1185 GstGLWindow *window;
1186
1187 egl = GST_GL_CONTEXT_EGL (context);
1188 window = gst_gl_context_get_window (context);
1189
1190 if (window && egl->window_handle_signal) {
1191 g_signal_handler_disconnect (window, egl->window_handle_signal);
1192 egl->window_handle_signal = 0;
1193 }
1194 if (window) {
1195 gst_object_unref (window);
1196 }
1197
1198 gst_gl_context_egl_activate (context, FALSE);
1199
1200 if (egl->egl_surface) {
1201 eglDestroySurface (egl->egl_display, egl->egl_surface);
1202 egl->egl_surface = EGL_NO_SURFACE;
1203 }
1204
1205 if (egl->egl_context) {
1206 eglDestroyContext (egl->egl_display, egl->egl_context);
1207 egl->egl_context = NULL;
1208 }
1209
1210 eglReleaseThread ();
1211
1212 if (egl->display_egl) {
1213 gst_object_unref (egl->display_egl);
1214 egl->display_egl = NULL;
1215 }
1216
1217 if (egl->requested_config)
1218 gst_structure_free (egl->requested_config);
1219 egl->requested_config = NULL;
1220 }
1221
1222 static gboolean
gst_gl_context_egl_activate(GstGLContext * context,gboolean activate)1223 gst_gl_context_egl_activate (GstGLContext * context, gboolean activate)
1224 {
1225 GstGLContextEGL *egl;
1226 gboolean result;
1227
1228 egl = GST_GL_CONTEXT_EGL (context);
1229
1230 if (activate) {
1231 GstGLWindow *window = gst_gl_context_get_window (context);
1232 guintptr handle = 0;
1233 /* Check if the backing handle changed */
1234 if (window) {
1235 handle = gst_gl_window_get_window_handle (window);
1236 gst_object_unref (window);
1237 }
1238 if (handle && (egl->egl_surface == EGL_NO_SURFACE)) {
1239 #if GST_GL_HAVE_WINDOW_WINRT && defined (EGL_ANGLE_SURFACE_RENDER_TO_BACK_BUFFER)
1240 const EGLint attrs[] = {
1241 /* EGL_ANGLE_SURFACE_RENDER_TO_BACK_BUFFER is an optimization that can
1242 * have large performance benefits on mobile devices. */
1243 EGL_ANGLE_SURFACE_RENDER_TO_BACK_BUFFER, EGL_TRUE,
1244 EGL_NONE
1245 };
1246 #else
1247 const EGLint *attrs = NULL;
1248 #endif
1249 GST_DEBUG_OBJECT (context,
1250 "Handle changed (have:%p, now:%p), switching surface",
1251 (void *) egl->window_handle, (void *) handle);
1252 egl->egl_surface =
1253 eglCreateWindowSurface (egl->egl_display, egl->egl_config,
1254 (EGLNativeWindowType) handle, attrs);
1255 egl->window_handle = handle;
1256
1257 if (egl->egl_surface == EGL_NO_SURFACE) {
1258 GST_ERROR_OBJECT (context, "Failed to create window surface: %s",
1259 gst_egl_get_error_string (eglGetError ()));
1260 result = FALSE;
1261 goto done;
1262 }
1263 }
1264 result = eglMakeCurrent (egl->egl_display, egl->egl_surface,
1265 egl->egl_surface, egl->egl_context);
1266 } else {
1267 result = eglMakeCurrent (egl->egl_display, EGL_NO_SURFACE,
1268 EGL_NO_SURFACE, EGL_NO_CONTEXT);
1269 }
1270
1271 if (!result) {
1272 GST_ERROR_OBJECT (context,
1273 "Failed to bind context to the current rendering thread: %s",
1274 gst_egl_get_error_string (eglGetError ()));
1275 }
1276
1277 done:
1278 return result;
1279 }
1280
1281 static guintptr
gst_gl_context_egl_get_gl_context(GstGLContext * context)1282 gst_gl_context_egl_get_gl_context (GstGLContext * context)
1283 {
1284 return (guintptr) GST_GL_CONTEXT_EGL (context)->egl_context;
1285 }
1286
1287 static void
gst_gl_context_egl_swap_buffers(GstGLContext * context)1288 gst_gl_context_egl_swap_buffers (GstGLContext * context)
1289 {
1290 GstGLContextEGL *egl;
1291
1292 egl = GST_GL_CONTEXT_EGL (context);
1293
1294 eglSwapBuffers (egl->egl_display, egl->egl_surface);
1295 }
1296
1297 static GstGLAPI
gst_gl_context_egl_get_gl_api(GstGLContext * context)1298 gst_gl_context_egl_get_gl_api (GstGLContext * context)
1299 {
1300 return GST_GL_CONTEXT_EGL (context)->gl_api;
1301 }
1302
1303 static GstGLPlatform
gst_gl_context_egl_get_gl_platform(GstGLContext * context)1304 gst_gl_context_egl_get_gl_platform (GstGLContext * context)
1305 {
1306 return GST_GL_PLATFORM_EGL;
1307 }
1308
1309 static GModule *module_egl;
1310
1311 static gpointer
load_egl_module(gpointer user_data)1312 load_egl_module (gpointer user_data)
1313 {
1314 #ifdef GST_GL_LIBEGL_MODULE_NAME
1315 module_egl = g_module_open (GST_GL_LIBEGL_MODULE_NAME, G_MODULE_BIND_LAZY);
1316 #else
1317 /* On Linux the .so is only in -dev packages, try with a real soname
1318 * Proper compilers will optimize away the strcmp */
1319 if (g_strcmp0 (G_MODULE_SUFFIX, "so") == 0)
1320 module_egl = g_module_open ("libEGL.so.1", G_MODULE_BIND_LAZY);
1321
1322 /* This automatically handles the suffix and even .la files */
1323 if (!module_egl)
1324 module_egl = g_module_open ("libEGL", G_MODULE_BIND_LAZY);
1325 #endif
1326
1327 return NULL;
1328 }
1329
1330 gpointer
gst_gl_context_egl_get_proc_address(GstGLAPI gl_api,const gchar * name)1331 gst_gl_context_egl_get_proc_address (GstGLAPI gl_api, const gchar * name)
1332 {
1333 gpointer result = NULL;
1334 static GOnce g_once = G_ONCE_INIT;
1335
1336 #ifdef __APPLE__
1337 #if GST_GL_HAVE_OPENGL && !defined(GST_GL_LIBGL_MODULE_NAME)
1338 if (!result && (gl_api & (GST_GL_API_OPENGL | GST_GL_API_OPENGL3))) {
1339 static GModule *module_opengl = NULL;
1340 if (g_once_init_enter (&module_opengl)) {
1341 GModule *setup_module_opengl =
1342 g_module_open ("libGL.dylib", G_MODULE_BIND_LAZY);
1343 g_once_init_leave (&module_opengl, setup_module_opengl);
1344 }
1345 if (module_opengl)
1346 g_module_symbol (module_opengl, name, &result);
1347 }
1348 #endif
1349 #if GST_GL_HAVE_GLES2 && !defined(GST_GL_LIBGLESV2_MODULE_NAME)
1350 if (!result && (gl_api & (GST_GL_API_GLES2))) {
1351 static GModule *module_gles2 = NULL;
1352 if (g_once_init_enter (&module_gles2)) {
1353 GModule *setup_module_gles2 =
1354 g_module_open ("libGLESv2.dylib", G_MODULE_BIND_LAZY);
1355 g_once_init_leave (&module_gles2, setup_module_gles2);
1356 }
1357 if (module_gles2)
1358 g_module_symbol (module_gles2, name, &result);
1359 }
1360 #endif
1361 #endif // __APPLE__
1362
1363 if (!result)
1364 result = gst_gl_context_default_get_proc_address (gl_api, name);
1365
1366 g_once (&g_once, load_egl_module, NULL);
1367
1368 if (!result && module_egl) {
1369 g_module_symbol (module_egl, name, &result);
1370 }
1371
1372 /* FIXME: On Android this returns wrong addresses for non-EGL functions */
1373 #if GST_GL_HAVE_WINDOW_ANDROID
1374 if (!result && g_str_has_prefix (name, "egl")) {
1375 #else
1376 if (!result) {
1377 result = eglGetProcAddress (name);
1378 #endif
1379 }
1380
1381 return result;
1382 }
1383
1384 static gboolean
1385 gst_gl_context_egl_check_feature (GstGLContext * context, const gchar * feature)
1386 {
1387 GstGLContextEGL *context_egl = GST_GL_CONTEXT_EGL (context);
1388
1389 return gst_gl_check_extension (feature, context_egl->egl_exts);
1390 }
1391
1392 guintptr
1393 gst_gl_context_egl_get_current_context (void)
1394 {
1395 return (guintptr) eglGetCurrentContext ();
1396 }
1397
1398 static void
1399 gst_gl_context_egl_get_gl_platform_version (GstGLContext * context,
1400 gint * major, gint * minor)
1401 {
1402 GstGLContextEGL *context_egl = GST_GL_CONTEXT_EGL (context);
1403
1404 *major = context_egl->egl_major;
1405 *minor = context_egl->egl_minor;
1406 }
1407
1408 static GstStructure *
1409 gst_gl_context_egl_get_config (GstGLContext * context)
1410 {
1411 GstGLContextEGL *egl = GST_GL_CONTEXT_EGL (context);
1412
1413 g_return_val_if_fail (egl->egl_config, NULL);
1414
1415 return egl_config_to_structure (egl->egl_display, egl->egl_config);
1416 }
1417
1418 static gboolean
1419 gst_gl_context_egl_request_config (GstGLContext * context,
1420 GstStructure * config)
1421 {
1422 GstGLContextEGL *egl = GST_GL_CONTEXT_EGL (context);
1423
1424 if (egl->requested_config)
1425 gst_structure_free (egl->requested_config);
1426 egl->requested_config = config;
1427
1428 return TRUE;
1429 }
1430
1431 gboolean
1432 gst_gl_context_egl_fill_info (GstGLContext * context, GError ** error)
1433 {
1434 EGLContext egl_context = (EGLContext) gst_gl_context_get_gl_context (context);
1435 GstGLDisplay *display_egl;
1436 GstStructure *config;
1437 EGLDisplay *egl_display;
1438 EGLConfig egl_config;
1439 int config_id, n_configs;
1440 int attrs[3];
1441
1442 if (!egl_context) {
1443 g_set_error (error, GST_GL_CONTEXT_ERROR,
1444 GST_GL_CONTEXT_ERROR_RESOURCE_UNAVAILABLE, "no EGL context");
1445 return FALSE;
1446 }
1447
1448 display_egl =
1449 GST_GL_DISPLAY (gst_gl_display_egl_from_gl_display (context->display));
1450 egl_display = (EGLDisplay) gst_gl_display_get_handle (display_egl);
1451
1452 if (EGL_TRUE != eglQueryContext (egl_display, egl_context, EGL_CONFIG_ID,
1453 &config_id)) {
1454 GST_WARNING_OBJECT (context,
1455 "could not retrieve egl config id from egl context: %s",
1456 gst_egl_get_error_string (eglGetError ()));
1457 g_set_error (error, GST_GL_CONTEXT_ERROR,
1458 GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
1459 "could not retrieve egl config id from egl context: %s",
1460 gst_egl_get_error_string (eglGetError ()));
1461 goto failure;
1462 }
1463
1464 if (config_id == 0) {
1465 GST_INFO_OBJECT (context, "egl config not available. ID is 0");
1466 gst_object_unref (display_egl);
1467 return TRUE;
1468 }
1469
1470 attrs[0] = EGL_CONFIG_ID;
1471 attrs[1] = config_id;
1472 attrs[2] = EGL_NONE;
1473
1474 if (EGL_TRUE != eglChooseConfig (egl_display, attrs, &egl_config, 1,
1475 &n_configs) || n_configs <= 0) {
1476 GST_WARNING_OBJECT (context,
1477 "could not retrieve egl config from its ID 0x%x. "
1478 "Wrong EGLDisplay or context?", config_id);
1479 g_set_error (error, GST_GL_CONTEXT_ERROR,
1480 GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
1481 "could not retrieve egl config from its ID 0x%x. "
1482 "Wrong EGLDisplay or context?", config_id);
1483 goto failure;
1484 }
1485
1486 config = egl_config_to_structure (egl_display, egl_config);
1487 if (!config) {
1488 GST_WARNING_OBJECT (context, "could not transform config id 0x%x into "
1489 "GstStructure", config_id);
1490 g_set_error (error, GST_GL_CONTEXT_ERROR,
1491 GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
1492 "could not transform config id 0x%x into GstStructure", config_id);
1493 goto failure;
1494 }
1495
1496 GST_INFO_OBJECT (context, "found config %" GST_PTR_FORMAT, config);
1497
1498 g_object_set_data_full (G_OBJECT (context),
1499 GST_GL_CONTEXT_WRAPPED_GL_CONFIG_NAME, config,
1500 (GDestroyNotify) gst_structure_free);
1501
1502 gst_object_unref (display_egl);
1503 return TRUE;
1504
1505 failure:
1506 gst_object_unref (display_egl);
1507 return FALSE;
1508 }
1509