1 /* Generic video mixer plugin
4 * Copyright (C) 2009 Julien Isorce <julien.isorce@gmail.com>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
27 #include <gst/base/gstcollectpads.h>
28 #include <gst/video/video.h>
37 #include "gstglmixer.h"
39 #if GST_GL_HAVE_PLATFORM_EGL
40 #include <gst/gl/egl/gsteglimagememory.h>
43 #define gst_gl_mixer_parent_class parent_class
44 G_DEFINE_ABSTRACT_TYPE (GstGLMixer, gst_gl_mixer, GST_TYPE_VIDEO_AGGREGATOR);
45 static gboolean gst_gl_mixer_do_bufferpool (GstGLMixer * mix,
49 #define GST_CAT_DEFAULT gst_gl_mixer_debug
50 GST_DEBUG_CATEGORY (gst_gl_mixer_debug);
52 static void gst_gl_mixer_pad_get_property (GObject * object, guint prop_id,
53 GValue * value, GParamSpec * pspec);
54 static void gst_gl_mixer_pad_set_property (GObject * object, guint prop_id,
55 const GValue * value, GParamSpec * pspec);
56 static void gst_gl_mixer_pad_finalize (GObject * object);
58 static void gst_gl_mixer_set_context (GstElement * element,
59 GstContext * context);
66 #define GST_GL_MIXER_GET_PRIVATE(obj) \
67 (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GST_TYPE_GL_MIXER, GstGLMixerPrivate))
69 struct _GstGLMixerPrivate
75 GstAllocator *allocator;
76 GstAllocationParams params;
79 gboolean gl_resource_ready;
80 GMutex gl_resource_lock;
81 GCond gl_resource_cond;
84 G_DEFINE_TYPE (GstGLMixerPad, gst_gl_mixer_pad, GST_TYPE_VIDEO_AGGREGATOR_PAD);
87 gst_gl_mixer_pad_class_init (GstGLMixerPadClass * klass)
89 GObjectClass *gobject_class = (GObjectClass *) klass;
90 GstVideoAggregatorPadClass *vaggpad_class =
91 (GstVideoAggregatorPadClass *) klass;
93 gobject_class->set_property = gst_gl_mixer_pad_set_property;
94 gobject_class->get_property = gst_gl_mixer_pad_get_property;
96 gobject_class->finalize = gst_gl_mixer_pad_finalize;
98 vaggpad_class->set_info = NULL;
99 vaggpad_class->prepare_frame = NULL;
100 vaggpad_class->clean_frame = NULL;
104 gst_gl_mixer_pad_finalize (GObject * object)
106 GstGLMixerPad *pad = GST_GL_MIXER_PAD (object);
109 gst_object_unref (pad->upload);
113 G_OBJECT_CLASS (gst_gl_mixer_pad_parent_class)->finalize (object);
117 gst_gl_mixer_pad_get_property (GObject * object, guint prop_id,
118 GValue * value, GParamSpec * pspec)
122 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
128 gst_gl_mixer_pad_set_property (GObject * object, guint prop_id,
129 const GValue * value, GParamSpec * pspec)
133 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
139 _negotiated_caps (GstVideoAggregator * vagg, GstCaps * caps)
141 GstGLMixer *mix = GST_GL_MIXER (vagg);
142 gboolean ret = gst_gl_mixer_do_bufferpool (mix, caps);
144 mix->priv->negotiated = ret;
146 gst_caps_replace (&mix->out_caps, caps);
152 gst_gl_mixer_propose_allocation (GstGLMixer * mix,
153 GstQuery * decide_query, GstQuery * query)
156 GstStructure *config;
160 GError *error = NULL;
161 GstStructure *gl_context;
162 gchar *platform, *gl_apis;
164 GstAllocator *allocator = NULL;
165 GstAllocationParams params;
167 gst_query_parse_allocation (query, &caps, &need_pool);
172 if ((pool = mix->priv->pool))
173 gst_object_ref (pool);
178 /* we had a pool, check caps */
179 GST_DEBUG_OBJECT (mix, "check existing pool caps");
180 config = gst_buffer_pool_get_config (pool);
181 gst_buffer_pool_config_get_params (config, &pcaps, &size, NULL, NULL);
183 if (!gst_caps_is_equal (caps, pcaps)) {
184 GST_DEBUG_OBJECT (mix, "pool has different caps");
185 /* different caps, we can't use this pool */
186 gst_object_unref (pool);
189 gst_structure_free (config);
192 if (!gst_gl_ensure_element_data (mix, &mix->display, &mix->other_context))
196 mix->context = gst_gl_context_new (mix->display);
197 if (!gst_gl_context_create (mix->context, mix->other_context, &error))
201 if (pool == NULL && need_pool) {
204 if (!gst_video_info_from_caps (&info, caps))
207 GST_DEBUG_OBJECT (mix, "create new pool");
208 pool = gst_gl_buffer_pool_new (mix->context);
210 /* the normal size of a frame */
213 config = gst_buffer_pool_get_config (pool);
214 gst_buffer_pool_config_set_params (config, caps, size, 0, 0);
215 if (!gst_buffer_pool_set_config (pool, config))
220 gst_query_add_allocation_pool (query, pool, size, 1, 0);
221 gst_object_unref (pool);
224 /* we also support various metadata */
225 gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, 0);
226 if (mix->context->gl_vtable->FenceSync)
227 gst_query_add_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, 0);
229 gl_apis = gst_gl_api_to_string (gst_gl_context_get_gl_api (mix->context));
231 gst_gl_platform_to_string (gst_gl_context_get_gl_platform (mix->context));
232 handle = (gpointer) gst_gl_context_get_gl_context (mix->context);
235 gst_structure_new ("GstVideoGLTextureUploadMeta", "gst.gl.GstGLContext",
236 GST_GL_TYPE_CONTEXT, mix->context, "gst.gl.context.handle",
237 G_TYPE_POINTER, handle, "gst.gl.context.type", G_TYPE_STRING, platform,
238 "gst.gl.context.apis", G_TYPE_STRING, gl_apis, NULL);
239 gst_query_add_allocation_meta (query,
240 GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, gl_context);
244 gst_structure_free (gl_context);
246 gst_allocation_params_init (¶ms);
248 allocator = gst_allocator_find (GST_GL_MEMORY_ALLOCATOR);
249 gst_query_add_allocation_param (query, allocator, ¶ms);
250 gst_object_unref (allocator);
257 GST_DEBUG_OBJECT (mix, "no caps specified");
262 GST_DEBUG_OBJECT (mix, "invalid caps specified");
267 GST_DEBUG_OBJECT (mix, "failed setting config");
272 GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s", error->message),
279 gst_gl_mixer_pad_sink_acceptcaps (GstPad * pad, GstGLMixer * mix,
283 GstCaps *template_caps;
285 GST_DEBUG_OBJECT (pad, "try accept caps of %" GST_PTR_FORMAT, caps);
287 template_caps = gst_pad_get_pad_template_caps (pad);
288 template_caps = gst_caps_make_writable (template_caps);
290 ret = gst_caps_can_intersect (caps, template_caps);
291 GST_DEBUG_OBJECT (pad, "%saccepted caps %" GST_PTR_FORMAT,
292 (ret ? "" : "not "), caps);
293 gst_caps_unref (template_caps);
299 gst_gl_mixer_set_caps_features (const GstCaps * caps,
300 const gchar * feature_name)
302 GstCaps *tmp = gst_caps_copy (caps);
303 guint n = gst_caps_get_size (tmp);
306 for (i = 0; i < n; i++) {
307 GstCapsFeatures *features = gst_caps_get_features (tmp, i);
309 guint n_f = gst_caps_features_get_size (features);
311 for (j = 0; j < n_f; j++) {
312 gst_caps_features_remove_id (features,
313 gst_caps_features_get_nth_id (features, j));
317 gst_caps_features_add (features, feature_name);
318 gst_caps_set_simple (tmp, "format", G_TYPE_STRING, "RGBA", NULL);
324 /* copies the given caps */
326 gst_gl_mixer_caps_remove_format_info (GstCaps * caps)
333 res = gst_caps_new_empty ();
335 n = gst_caps_get_size (caps);
336 for (i = 0; i < n; i++) {
337 st = gst_caps_get_structure (caps, i);
338 f = gst_caps_get_features (caps, i);
340 /* If this is already expressed by the existing caps
341 * skip this structure */
342 if (i > 0 && gst_caps_is_subset_structure_full (res, st, f))
345 st = gst_structure_copy (st);
346 /* Only remove format info for the cases when we can actually convert */
347 if (!gst_caps_features_is_any (f)
348 && gst_caps_features_is_equal (f,
349 GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY))
350 gst_structure_remove_fields (st, "format", "colorimetry", "chroma-site",
352 gst_structure_remove_fields (st, "width", "height", NULL);
354 gst_caps_append_structure_full (res, st, gst_caps_features_copy (f));
361 gst_gl_mixer_update_caps (GstGLMixer * mix, GstCaps * caps)
363 GstCaps *result = NULL;
364 GstCaps *glcaps = gst_gl_mixer_set_caps_features (caps,
365 GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
366 #if GST_GL_HAVE_PLATFORM_EGL
367 GstCaps *eglcaps = gst_gl_mixer_set_caps_features (caps,
368 GST_CAPS_FEATURE_MEMORY_EGL_IMAGE);
370 GstCaps *uploadcaps = gst_gl_mixer_set_caps_features (caps,
371 GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META);
373 gst_caps_from_string (GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS));
375 result = gst_caps_new_empty ();
377 result = gst_caps_merge (result, glcaps);
378 #if GST_GL_HAVE_PLATFORM_EGL
379 result = gst_caps_merge (result, eglcaps);
381 result = gst_caps_merge (result, uploadcaps);
382 result = gst_caps_merge (result, raw_caps);
384 result = gst_caps_merge (result, gst_gl_mixer_caps_remove_format_info (caps));
386 GST_DEBUG_OBJECT (mix, "returning %" GST_PTR_FORMAT, result);
392 gst_gl_mixer_pad_sink_getcaps (GstPad * pad, GstGLMixer * mix, GstCaps * filter)
395 GstCaps *template_caps;
396 GstCaps *filtered_caps;
397 GstCaps *returned_caps;
398 gboolean had_current_caps = TRUE;
400 template_caps = gst_pad_get_pad_template_caps (pad);
402 srccaps = gst_pad_get_current_caps (pad);
403 if (srccaps == NULL) {
404 had_current_caps = FALSE;
405 srccaps = template_caps;
407 srccaps = gst_caps_merge (srccaps, gst_gl_mixer_update_caps (mix, srccaps));
410 filtered_caps = srccaps;
412 filtered_caps = gst_caps_intersect (srccaps, filter);
413 returned_caps = gst_caps_intersect (filtered_caps, template_caps);
416 gst_caps_unref (filtered_caps);
417 if (had_current_caps)
418 gst_caps_unref (template_caps);
420 GST_DEBUG_OBJECT (pad, "returning %" GST_PTR_FORMAT, returned_caps);
422 return returned_caps;
426 gst_gl_mixer_sink_query (GstAggregator * agg, GstAggregatorPad * bpad,
429 gboolean ret = FALSE;
430 GstGLMixer *mix = GST_GL_MIXER (agg);
432 GST_TRACE ("QUERY %" GST_PTR_FORMAT, query);
434 switch (GST_QUERY_TYPE (query)) {
437 GstCaps *filter, *caps;
439 gst_query_parse_caps (query, &filter);
440 caps = gst_gl_mixer_pad_sink_getcaps (GST_PAD (bpad), mix, filter);
441 gst_query_set_caps_result (query, caps);
442 gst_caps_unref (caps);
446 case GST_QUERY_ACCEPT_CAPS:
450 gst_query_parse_accept_caps (query, &caps);
451 ret = gst_gl_mixer_pad_sink_acceptcaps (GST_PAD (bpad), mix, caps);
452 gst_query_set_accept_caps_result (query, ret);
456 case GST_QUERY_ALLOCATION:
458 GstQuery *decide_query = NULL;
460 GST_OBJECT_LOCK (mix);
461 if (G_UNLIKELY (!mix->priv->negotiated)) {
462 GST_DEBUG_OBJECT (mix,
463 "not negotiated yet, can't answer ALLOCATION query");
464 GST_OBJECT_UNLOCK (mix);
467 if ((decide_query = mix->priv->query))
468 gst_query_ref (decide_query);
469 GST_OBJECT_UNLOCK (mix);
471 GST_DEBUG_OBJECT (mix,
472 "calling propose allocation with query %" GST_PTR_FORMAT,
475 /* pass the query to the propose_allocation vmethod if any */
476 ret = gst_gl_mixer_propose_allocation (mix, decide_query, query);
479 gst_query_unref (decide_query);
481 GST_DEBUG_OBJECT (mix, "ALLOCATION ret %d, %" GST_PTR_FORMAT, ret, query);
484 case GST_QUERY_CONTEXT:
486 ret = gst_gl_handle_context_query ((GstElement *) mix, query,
487 &mix->display, &mix->other_context);
491 ret = GST_AGGREGATOR_CLASS (parent_class)->sink_query (agg, bpad, query);
499 gst_gl_mixer_pad_init (GstGLMixerPad * mixerpad)
503 /* GLMixer signals and args */
516 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
519 GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
520 (GST_CAPS_FEATURE_MEMORY_GL_MEMORY,
522 GST_VIDEO_CAPS_MAKE_WITH_FEATURES
523 (GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META,
525 "; " GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS))
528 static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink_%u",
531 GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
532 (GST_CAPS_FEATURE_MEMORY_GL_MEMORY,
534 GST_VIDEO_CAPS_MAKE_WITH_FEATURES
535 (GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META,
537 "; " GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS))
540 static gboolean gst_gl_mixer_src_query (GstAggregator * agg, GstQuery * query);
542 gst_gl_mixer_get_output_buffer (GstVideoAggregator * videoaggregator,
543 GstBuffer ** outbuf);
545 gst_gl_mixer_src_activate_mode (GstAggregator * aggregator, GstPadMode mode,
547 static gboolean gst_gl_mixer_stop (GstAggregator * agg);
548 static gboolean gst_gl_mixer_start (GstAggregator * agg);
551 gst_gl_mixer_aggregate_frames (GstVideoAggregator * vagg,
552 GstBuffer * outbuffer);
554 static void gst_gl_mixer_set_property (GObject * object, guint prop_id,
555 const GValue * value, GParamSpec * pspec);
556 static void gst_gl_mixer_get_property (GObject * object, guint prop_id,
557 GValue * value, GParamSpec * pspec);
559 static gboolean gst_gl_mixer_decide_allocation (GstGLMixer * mix,
561 static gboolean gst_gl_mixer_set_allocation (GstGLMixer * mix,
562 GstBufferPool * pool, GstAllocator * allocator,
563 GstAllocationParams * params, GstQuery * query);
565 static void gst_gl_mixer_finalize (GObject * object);
568 gst_gl_mixer_class_init (GstGLMixerClass * klass)
570 GObjectClass *gobject_class;
571 GstElementClass *element_class;
573 GstVideoAggregatorClass *videoaggregator_class =
574 (GstVideoAggregatorClass *) klass;
575 GstAggregatorClass *agg_class = (GstAggregatorClass *) klass;
577 GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "glmixer", 0, "opengl mixer");
579 gobject_class = (GObjectClass *) klass;
580 element_class = GST_ELEMENT_CLASS (klass);
582 g_type_class_add_private (klass, sizeof (GstGLMixerPrivate));
584 gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_gl_mixer_finalize);
586 gobject_class->get_property = gst_gl_mixer_get_property;
587 gobject_class->set_property = gst_gl_mixer_set_property;
589 gst_element_class_add_pad_template (element_class,
590 gst_static_pad_template_get (&src_factory));
591 gst_element_class_add_pad_template (element_class,
592 gst_static_pad_template_get (&sink_factory));
594 element_class->set_context = GST_DEBUG_FUNCPTR (gst_gl_mixer_set_context);
596 agg_class->sinkpads_type = GST_TYPE_GL_MIXER_PAD;
597 agg_class->sink_query = gst_gl_mixer_sink_query;
598 agg_class->src_query = gst_gl_mixer_src_query;
599 agg_class->src_activate = gst_gl_mixer_src_activate_mode;
600 agg_class->stop = gst_gl_mixer_stop;
601 agg_class->start = gst_gl_mixer_start;
603 videoaggregator_class->aggregate_frames = gst_gl_mixer_aggregate_frames;
604 videoaggregator_class->get_output_buffer = gst_gl_mixer_get_output_buffer;
605 videoaggregator_class->negotiated_caps = _negotiated_caps;
606 videoaggregator_class->find_best_format = NULL;
608 g_object_class_install_property (gobject_class, PROP_CONTEXT,
609 g_param_spec_object ("context",
611 "Get OpenGL context",
612 GST_GL_TYPE_CONTEXT, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
614 /* Register the pad class */
615 g_type_class_ref (GST_TYPE_GL_MIXER_PAD);
617 klass->set_caps = NULL;
622 gst_gl_mixer_reset (GstGLMixer * mix)
624 /* clean up collect data */
625 mix->priv->negotiated = FALSE;
629 gst_gl_mixer_init (GstGLMixer * mix)
631 mix->priv = GST_GL_MIXER_GET_PRIVATE (mix);
632 mix->array_buffers = 0;
635 mix->depthbuffer = 0;
637 mix->priv->gl_resource_ready = FALSE;
638 g_mutex_init (&mix->priv->gl_resource_lock);
639 g_cond_init (&mix->priv->gl_resource_cond);
640 /* initialize variables */
641 gst_gl_mixer_reset (mix);
645 gst_gl_mixer_finalize (GObject * object)
647 GstGLMixer *mix = GST_GL_MIXER (object);
648 GstGLMixerPrivate *priv = mix->priv;
650 if (mix->other_context) {
651 gst_object_unref (mix->other_context);
652 mix->other_context = NULL;
655 g_mutex_clear (&priv->gl_resource_lock);
656 g_cond_clear (&priv->gl_resource_cond);
657 G_OBJECT_CLASS (parent_class)->finalize (object);
661 gst_gl_mixer_set_context (GstElement * element, GstContext * context)
663 GstGLMixer *mix = GST_GL_MIXER (element);
665 gst_gl_handle_set_context (element, context, &mix->display,
666 &mix->other_context);
670 gst_gl_mixer_activate (GstGLMixer * mix, gboolean active)
672 gboolean result = TRUE;
675 if (!gst_gl_ensure_element_data (mix, &mix->display, &mix->other_context))
683 gst_gl_mixer_src_activate_mode (GstAggregator * aggregator, GstPadMode mode,
687 gboolean result = FALSE;
689 mix = GST_GL_MIXER (aggregator);
692 case GST_PAD_MODE_PUSH:
693 case GST_PAD_MODE_PULL:
694 result = gst_gl_mixer_activate (mix, active);
704 gst_gl_mixer_query_caps (GstPad * pad, GstAggregator * agg, GstQuery * query)
706 GstCaps *filter, *current_caps, *retcaps;
708 gst_query_parse_caps (query, &filter);
710 current_caps = gst_pad_get_current_caps (pad);
711 if (current_caps == NULL)
712 current_caps = gst_pad_get_pad_template_caps (agg->srcpad);
714 retcaps = gst_gl_mixer_caps_remove_format_info (current_caps);
715 gst_caps_unref (current_caps);
719 gst_caps_intersect_full (filter, retcaps, GST_CAPS_INTERSECT_FIRST);
721 gst_query_set_caps_result (query, retcaps);
722 gst_caps_unref (retcaps);
728 gst_gl_mixer_src_query (GstAggregator * agg, GstQuery * query)
730 gboolean res = FALSE;
731 GstGLMixer *mix = GST_GL_MIXER (agg);
733 switch (GST_QUERY_TYPE (query)) {
734 case GST_QUERY_CONTEXT:
736 res = gst_gl_handle_context_query ((GstElement *) mix, query,
737 &mix->display, &mix->other_context);
741 res = gst_gl_mixer_query_caps (agg->srcpad, agg, query);
744 res = GST_AGGREGATOR_CLASS (parent_class)->src_query (agg, query);
752 gst_gl_mixer_get_output_buffer (GstVideoAggregator * videoaggregator,
755 GstGLMixer *mix = GST_GL_MIXER (videoaggregator);
757 if (!mix->priv->pool_active) {
758 if (!gst_buffer_pool_set_active (mix->priv->pool, TRUE)) {
759 GST_ELEMENT_ERROR (mix, RESOURCE, SETTINGS,
760 ("failed to activate bufferpool"), ("failed to activate bufferpool"));
761 return GST_FLOW_ERROR;
763 mix->priv->pool_active = TRUE;
766 return gst_buffer_pool_acquire_buffer (mix->priv->pool, outbuf, NULL);
770 gst_gl_mixer_decide_allocation (GstGLMixer * mix, GstQuery * query)
772 GstGLMixerClass *mixer_class = GST_GL_MIXER_GET_CLASS (mix);
773 GstBufferPool *pool = NULL;
774 GstStructure *config;
776 guint min, max, size;
777 gboolean update_pool;
778 GError *error = NULL;
780 guint out_width, out_height;
781 GstGLContext *other_context = NULL;
782 GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mix);
783 gboolean same_downstream_gl_context = FALSE;
785 if (!gst_gl_ensure_element_data (mix, &mix->display, &mix->other_context))
788 if (gst_query_find_allocation_meta (query,
789 GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, &idx)) {
790 GstGLContext *context;
791 const GstStructure *upload_meta_params;
796 gst_query_parse_nth_allocation_meta (query, idx, &upload_meta_params);
797 if (upload_meta_params) {
798 if (gst_structure_get (upload_meta_params, "gst.gl.GstGLContext",
799 GST_GL_TYPE_CONTEXT, &context, NULL) && context) {
800 GstGLContext *old = mix->context;
802 mix->context = context;
804 gst_object_unref (old);
805 same_downstream_gl_context = TRUE;
806 } else if (gst_structure_get (upload_meta_params, "gst.gl.context.handle",
807 G_TYPE_POINTER, &handle, "gst.gl.context.type", G_TYPE_STRING,
808 &type, "gst.gl.context.apis", G_TYPE_STRING, &apis, NULL)
810 GstGLPlatform platform;
813 GST_DEBUG ("got GL context handle 0x%p with type %s and apis %s",
816 platform = gst_gl_platform_from_string (type);
817 gl_apis = gst_gl_api_from_string (apis);
819 if (gl_apis && platform)
821 gst_gl_context_new_wrapped (mix->display, (guintptr) handle,
827 if (mix->other_context) {
828 if (!other_context) {
829 other_context = mix->other_context;
831 GST_ELEMENT_WARNING (mix, LIBRARY, SETTINGS,
832 ("%s", "Cannot share with more than one GL context"),
833 ("%s", "Cannot share with more than one GL context"));
838 mix->context = gst_gl_context_new (mix->display);
839 if (!gst_gl_context_create (mix->context, other_context, &error))
843 out_width = GST_VIDEO_INFO_WIDTH (&vagg->info);
844 out_height = GST_VIDEO_INFO_HEIGHT (&vagg->info);
846 g_mutex_lock (&mix->priv->gl_resource_lock);
847 mix->priv->gl_resource_ready = FALSE;
849 gst_gl_context_del_fbo (mix->context, mix->fbo, mix->depthbuffer);
851 mix->depthbuffer = 0;
854 if (!gst_gl_context_gen_fbo (mix->context, out_width, out_height,
855 &mix->fbo, &mix->depthbuffer)) {
856 g_cond_signal (&mix->priv->gl_resource_cond);
857 g_mutex_unlock (&mix->priv->gl_resource_lock);
862 gst_gl_context_del_texture (mix->context, &mix->out_tex_id);
863 gst_gl_context_gen_texture (mix->context, &mix->out_tex_id,
864 GST_VIDEO_FORMAT_RGBA, out_width, out_height);
866 gst_query_parse_allocation (query, &caps, NULL);
868 if (mixer_class->set_caps)
869 mixer_class->set_caps (mix, caps);
871 mix->priv->gl_resource_ready = TRUE;
872 g_cond_signal (&mix->priv->gl_resource_cond);
873 g_mutex_unlock (&mix->priv->gl_resource_lock);
875 if (gst_query_get_n_allocation_pools (query) > 0) {
876 gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
882 gst_video_info_init (&vinfo);
883 gst_video_info_from_caps (&vinfo, caps);
889 if (!pool || (!same_downstream_gl_context
890 && gst_query_find_allocation_meta (query, GST_GL_SYNC_META_API_TYPE,
892 && !gst_buffer_pool_has_option (pool,
893 GST_BUFFER_POOL_OPTION_GL_SYNC_META))) {
894 /* can't use this pool */
896 gst_object_unref (pool);
897 pool = gst_gl_buffer_pool_new (mix->context);
899 config = gst_buffer_pool_get_config (pool);
901 gst_buffer_pool_config_set_params (config, caps, size, min, max);
902 gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
903 if (gst_query_find_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, NULL))
904 gst_buffer_pool_config_add_option (config,
905 GST_BUFFER_POOL_OPTION_GL_SYNC_META);
906 gst_buffer_pool_config_add_option (config,
907 GST_BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META);
909 gst_buffer_pool_set_config (pool, config);
912 gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
914 gst_query_add_allocation_pool (query, pool, size, min, max);
916 gst_object_unref (pool);
922 GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s", error->message),
928 /* takes ownership of the pool, allocator and query */
930 gst_gl_mixer_set_allocation (GstGLMixer * mix,
931 GstBufferPool * pool, GstAllocator * allocator,
932 GstAllocationParams * params, GstQuery * query)
934 GstAllocator *oldalloc;
935 GstBufferPool *oldpool;
937 GstGLMixerPrivate *priv = mix->priv;
939 GST_DEBUG ("storing allocation query");
941 GST_OBJECT_LOCK (mix);
942 oldpool = priv->pool;
944 priv->pool_active = FALSE;
946 oldalloc = priv->allocator;
947 priv->allocator = allocator;
949 oldquery = priv->query;
953 priv->params = *params;
955 gst_allocation_params_init (&priv->params);
956 GST_OBJECT_UNLOCK (mix);
959 GST_DEBUG_OBJECT (mix, "deactivating old pool %p", oldpool);
960 gst_buffer_pool_set_active (oldpool, FALSE);
961 gst_object_unref (oldpool);
964 gst_object_unref (oldalloc);
967 gst_query_unref (oldquery);
973 gst_gl_mixer_do_bufferpool (GstGLMixer * mix, GstCaps * outcaps)
976 gboolean result = TRUE;
977 GstBufferPool *pool = NULL;
978 GstAllocator *allocator;
979 GstAllocationParams params;
980 GstAggregator *agg = GST_AGGREGATOR (mix);
982 /* find a pool for the negotiated caps now */
983 GST_DEBUG_OBJECT (mix, "doing allocation query");
984 query = gst_query_new_allocation (outcaps, TRUE);
985 if (!gst_pad_peer_query (agg->srcpad, query)) {
986 /* not a problem, just debug a little */
987 GST_DEBUG_OBJECT (mix, "peer ALLOCATION query failed");
990 GST_DEBUG_OBJECT (mix, "calling decide_allocation");
991 result = gst_gl_mixer_decide_allocation (mix, query);
993 GST_DEBUG_OBJECT (mix, "ALLOCATION (%d) params: %" GST_PTR_FORMAT, result,
997 goto no_decide_allocation;
999 /* we got configuration from our peer or the decide_allocation method,
1001 if (gst_query_get_n_allocation_params (query) > 0) {
1002 gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
1005 gst_allocation_params_init (¶ms);
1008 if (gst_query_get_n_allocation_pools (query) > 0)
1009 gst_query_parse_nth_allocation_pool (query, 0, &pool, NULL, NULL, NULL);
1012 result = gst_gl_mixer_set_allocation (mix, pool, allocator, ¶ms, query);
1017 no_decide_allocation:
1019 GST_WARNING_OBJECT (mix, "Failed to decide allocation");
1020 gst_query_unref (query);
1027 gst_gl_mixer_process_textures (GstGLMixer * mix, GstBuffer * outbuf)
1032 gboolean res = TRUE;
1033 guint array_index = 0;
1034 GstVideoFrame out_frame;
1035 GstElement *element = GST_ELEMENT (mix);
1036 GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mix);
1037 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
1038 GstGLMixerPrivate *priv = mix->priv;
1039 gboolean to_download =
1040 gst_caps_features_is_equal (GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY,
1041 gst_caps_get_features (mix->out_caps, 0));
1042 GstMapFlags out_map_flags = GST_MAP_WRITE;
1044 GST_TRACE ("Processing buffers");
1046 to_download |= !gst_is_gl_memory (gst_buffer_peek_memory (outbuf, 0));
1049 out_map_flags |= GST_MAP_GL;
1051 if (!gst_video_frame_map (&out_frame, &vagg->info, outbuf, out_map_flags)) {
1056 out_tex = *(guint *) out_frame.data[0];
1058 GST_INFO ("Output Buffer does not contain correct memory, "
1059 "attempting to wrap for download");
1062 mix->download = gst_gl_download_new (mix->context);
1064 gst_gl_download_set_format (mix->download, &out_frame.info);
1065 out_tex = mix->out_tex_id;
1068 GST_OBJECT_LOCK (mix);
1069 walk = element->sinkpads;
1071 i = mix->frames->len;
1072 g_ptr_array_set_size (mix->frames, element->numsinkpads);
1073 for (; i < element->numsinkpads; i++)
1074 mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData);
1076 GstGLMixerPad *pad = GST_GL_MIXER_PAD (walk->data);
1077 GstVideoAggregatorPad *vaggpad = walk->data;
1078 GstGLMixerFrameData *frame;
1080 frame = g_ptr_array_index (mix->frames, array_index);
1084 walk = g_list_next (walk);
1086 if (vaggpad->buffer != NULL) {
1089 GstCapsFeatures *gl_features;
1090 GstVideoInfo gl_info;
1091 GstVideoFrame gl_frame;
1092 GstGLSyncMeta *sync_meta;
1094 gst_video_info_set_format (&gl_info,
1095 GST_VIDEO_FORMAT_RGBA,
1096 GST_VIDEO_INFO_WIDTH (&vaggpad->info),
1097 GST_VIDEO_INFO_HEIGHT (&vaggpad->info));
1099 gst_caps_features_from_string (GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
1101 gl_caps = gst_video_info_to_caps (&gl_info);
1102 gst_caps_set_features (gl_caps, 0, gl_features);
1105 GstCaps *in_caps = gst_pad_get_current_caps (GST_PAD (pad));
1107 pad->upload = gst_gl_upload_new (mix->context);
1109 gst_gl_upload_set_caps (pad->upload, in_caps, gl_caps);
1111 gst_caps_unref (in_caps);
1114 sync_meta = gst_buffer_get_gl_sync_meta (vaggpad->buffer);
1116 gst_gl_sync_meta_wait (sync_meta);
1118 if (!gst_gl_upload_perform_with_buffer (pad->upload,
1119 vaggpad->buffer, &gl_buf)) {
1121 pad->mapped = FALSE;
1122 gst_caps_unref (gl_caps);
1126 if (!gst_video_frame_map (&gl_frame, &gl_info, gl_buf,
1127 GST_MAP_READ | GST_MAP_GL)) {
1129 pad->mapped = FALSE;
1130 gst_buffer_unref (gl_buf);
1131 gst_caps_unref (gl_caps);
1136 frame->texture = *(guint *) gl_frame.data[0];
1138 gst_caps_unref (gl_caps);
1139 gst_video_frame_unmap (&gl_frame);
1140 gst_buffer_unref (gl_buf);
1145 g_mutex_lock (&priv->gl_resource_lock);
1146 if (!priv->gl_resource_ready)
1147 g_cond_wait (&priv->gl_resource_cond, &priv->gl_resource_lock);
1149 if (!priv->gl_resource_ready) {
1150 g_mutex_unlock (&priv->gl_resource_lock);
1151 GST_ERROR_OBJECT (mix,
1152 "fbo used to render can't be created, do not run process_textures");
1157 mix_class->process_textures (mix, mix->frames, out_tex);
1159 g_mutex_unlock (&priv->gl_resource_lock);
1162 if (!gst_gl_download_perform_with_data (mix->download, out_tex,
1164 GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s",
1165 "Failed to download video frame"), (NULL));
1173 walk = GST_ELEMENT (mix)->sinkpads;
1175 GstGLMixerPad *pad = GST_GL_MIXER_PAD (walk->data);
1178 gst_gl_upload_release_buffer (pad->upload);
1180 pad->mapped = FALSE;
1181 walk = g_list_next (walk);
1184 GST_OBJECT_UNLOCK (mix);
1186 gst_video_frame_unmap (&out_frame);
1192 gst_gl_mixer_process_buffers (GstGLMixer * mix, GstBuffer * outbuf)
1195 guint i, array_index = 0;
1196 GstElement *element = GST_ELEMENT (mix);
1197 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
1199 GST_OBJECT_LOCK (mix);
1200 walk = GST_ELEMENT (mix)->sinkpads;
1201 i = mix->frames->len;
1202 g_ptr_array_set_size (mix->frames, element->numsinkpads);
1203 for (; i < element->numsinkpads; i++)
1204 mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData);
1205 while (walk) { /* We walk with this list because it's ordered */
1206 GstVideoAggregatorPad *vaggpad = walk->data;
1208 walk = g_list_next (walk);
1210 if (vaggpad->buffer != NULL) {
1211 /* put buffer into array */
1212 mix->array_buffers->pdata[array_index] = vaggpad->buffer;
1216 GST_OBJECT_UNLOCK (mix);
1218 return mix_class->process_buffers (mix, mix->array_buffers, outbuf);
1223 static GstFlowReturn
1224 gst_gl_mixer_aggregate_frames (GstVideoAggregator * vagg, GstBuffer * outbuf)
1226 gboolean res = FALSE;
1227 GstGLMixer *mix = GST_GL_MIXER (vagg);
1228 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (vagg);
1229 GstGLSyncMeta *sync_meta;
1231 if (mix_class->process_buffers)
1232 res = gst_gl_mixer_process_buffers (mix, outbuf);
1233 else if (mix_class->process_textures)
1234 res = gst_gl_mixer_process_textures (mix, outbuf);
1236 sync_meta = gst_buffer_get_gl_sync_meta (outbuf);
1238 gst_gl_sync_meta_set_sync_point (sync_meta, mix->context);
1240 return res ? GST_FLOW_OK : GST_FLOW_ERROR;
1244 gst_gl_mixer_get_property (GObject * object,
1245 guint prop_id, GValue * value, GParamSpec * pspec)
1247 GstGLMixer *mixer = GST_GL_MIXER (object);
1251 g_value_set_object (value, mixer->context);
1254 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1260 gst_gl_mixer_set_property (GObject * object,
1261 guint prop_id, const GValue * value, GParamSpec * pspec)
1265 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1271 _clean_upload (GstAggregator * agg, GstPad * aggpad, gpointer udata)
1273 GstGLMixerPad *pad = GST_GL_MIXER_PAD (aggpad);
1276 gst_object_unref (pad->upload);
1284 _free_glmixer_frame_data (GstGLMixerFrameData * frame)
1286 g_slice_free1 (sizeof (GstGLMixerFrameData), frame);
1290 gst_gl_mixer_start (GstAggregator * agg)
1293 GstGLMixer *mix = GST_GL_MIXER (agg);
1294 GstElement *element = GST_ELEMENT (agg);
1296 if (!GST_AGGREGATOR_CLASS (parent_class)->start (agg))
1299 GST_OBJECT_LOCK (mix);
1300 mix->array_buffers = g_ptr_array_new_full (element->numsinkpads,
1301 (GDestroyNotify) _free_glmixer_frame_data);
1302 mix->frames = g_ptr_array_new_full (element->numsinkpads, NULL);
1304 g_ptr_array_set_size (mix->array_buffers, element->numsinkpads);
1305 g_ptr_array_set_size (mix->frames, element->numsinkpads);
1307 for (i = 0; i < element->numsinkpads; i++)
1308 mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData);
1310 GST_OBJECT_UNLOCK (mix);
1316 gst_gl_mixer_stop (GstAggregator * agg)
1318 GstGLMixer *mix = GST_GL_MIXER (agg);
1319 GstGLMixerClass *mixer_class = GST_GL_MIXER_GET_CLASS (mix);
1321 if (!GST_AGGREGATOR_CLASS (parent_class)->stop (agg))
1324 GST_OBJECT_LOCK (agg);
1325 g_ptr_array_free (mix->frames, TRUE);
1327 g_ptr_array_free (mix->array_buffers, TRUE);
1328 mix->array_buffers = NULL;
1329 GST_OBJECT_UNLOCK (agg);
1331 if (mixer_class->reset)
1332 mixer_class->reset (mix);
1334 gst_gl_context_del_fbo (mix->context, mix->fbo, mix->depthbuffer);
1336 mix->depthbuffer = 0;
1338 if (mix->download) {
1339 gst_object_unref (mix->download);
1340 mix->download = NULL;
1343 gst_aggregator_iterate_sinkpads (GST_AGGREGATOR (mix), _clean_upload, NULL);
1345 if (mix->priv->query) {
1346 gst_query_unref (mix->priv->query);
1347 mix->priv->query = NULL;
1350 if (mix->priv->pool) {
1351 gst_object_unref (mix->priv->pool);
1352 mix->priv->pool = NULL;
1356 gst_object_unref (mix->display);
1357 mix->display = NULL;
1361 gst_object_unref (mix->context);
1362 mix->context = NULL;
1365 gst_gl_mixer_reset (mix);