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);
57 static GstBuffer *_default_pad_upload_buffer (GstGLMixer * mix,
58 GstGLMixerFrameData * frame, GstBuffer * buffer);
60 static void gst_gl_mixer_set_context (GstElement * element,
61 GstContext * context);
68 #define GST_GL_MIXER_GET_PRIVATE(obj) \
69 (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GST_TYPE_GL_MIXER, GstGLMixerPrivate))
71 struct _GstGLMixerPrivate
77 GstAllocator *allocator;
78 GstAllocationParams params;
81 gboolean gl_resource_ready;
82 GMutex gl_resource_lock;
83 GCond gl_resource_cond;
86 G_DEFINE_TYPE (GstGLMixerPad, gst_gl_mixer_pad, GST_TYPE_VIDEO_AGGREGATOR_PAD);
89 gst_gl_mixer_pad_class_init (GstGLMixerPadClass * klass)
91 GObjectClass *gobject_class = (GObjectClass *) klass;
92 GstVideoAggregatorPadClass *vaggpad_class =
93 (GstVideoAggregatorPadClass *) klass;
95 gobject_class->set_property = gst_gl_mixer_pad_set_property;
96 gobject_class->get_property = gst_gl_mixer_pad_get_property;
98 gobject_class->finalize = gst_gl_mixer_pad_finalize;
100 vaggpad_class->set_info = NULL;
101 vaggpad_class->prepare_frame = NULL;
102 vaggpad_class->clean_frame = NULL;
104 klass->upload_buffer = _default_pad_upload_buffer;
108 gst_gl_mixer_pad_finalize (GObject * object)
110 GstGLMixerPad *pad = GST_GL_MIXER_PAD (object);
113 gst_object_unref (pad->upload);
117 G_OBJECT_CLASS (gst_gl_mixer_pad_parent_class)->finalize (object);
121 _init_upload (GstGLMixer * mix, GstGLMixerPad * pad)
123 GstVideoAggregatorPad *vaggpad = GST_VIDEO_AGGREGATOR_PAD (pad);
126 GstCaps *in_caps = gst_pad_get_current_caps (GST_PAD (pad));
127 GstCaps *upload_caps = gst_caps_copy (in_caps);
128 GstCapsFeatures *gl_features =
129 gst_caps_features_from_string (GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
131 pad->upload = gst_gl_upload_new (mix->context);
133 gst_caps_set_features (upload_caps, 0,
134 gst_caps_features_copy (gl_features));
135 gst_gl_upload_set_caps (pad->upload, in_caps, upload_caps);
136 gst_caps_unref (in_caps);
139 GstVideoInfo gl_info;
142 gst_video_info_set_format (&gl_info,
143 GST_VIDEO_FORMAT_RGBA,
144 GST_VIDEO_INFO_WIDTH (&vaggpad->info),
145 GST_VIDEO_INFO_HEIGHT (&vaggpad->info));
146 gl_caps = gst_video_info_to_caps (&gl_info);
147 gst_caps_set_features (gl_caps, 0, gst_caps_features_copy (gl_features));
149 pad->convert = gst_gl_color_convert_new (mix->context);
151 gst_gl_color_convert_set_caps (pad->convert, upload_caps, gl_caps);
152 gst_caps_unref (gl_caps);
155 gst_caps_unref (upload_caps);
156 gst_caps_features_free (gl_features);
161 gst_gl_mixer_pad_get_property (GObject * object, guint prop_id,
162 GValue * value, GParamSpec * pspec)
166 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
172 gst_gl_mixer_pad_set_property (GObject * object, guint prop_id,
173 const GValue * value, GParamSpec * pspec)
177 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
183 _negotiated_caps (GstVideoAggregator * vagg, GstCaps * caps)
185 GstGLMixer *mix = GST_GL_MIXER (vagg);
186 gboolean ret = gst_gl_mixer_do_bufferpool (mix, caps);
188 mix->priv->negotiated = ret;
190 gst_caps_replace (&mix->out_caps, caps);
196 gst_gl_mixer_propose_allocation (GstGLMixer * mix, GstGLMixerPad * pad,
197 GstQuery * decide_query, GstQuery * query)
199 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
201 GstStructure *config;
205 GError *error = NULL;
207 gst_query_parse_allocation (query, &caps, &need_pool);
212 if ((pool = mix->priv->pool))
213 gst_object_ref (pool);
218 /* we had a pool, check caps */
219 GST_DEBUG_OBJECT (mix, "check existing pool caps");
220 config = gst_buffer_pool_get_config (pool);
221 gst_buffer_pool_config_get_params (config, &pcaps, &size, NULL, NULL);
223 if (!gst_caps_is_equal (caps, pcaps)) {
224 GST_DEBUG_OBJECT (mix, "pool has different caps");
225 /* different caps, we can't use this pool */
226 gst_object_unref (pool);
229 gst_structure_free (config);
232 if (!gst_gl_ensure_element_data (mix, &mix->display, &mix->other_context))
235 gst_gl_display_filter_gl_api (mix->display, mix_class->supported_gl_api);
238 mix->context = gst_gl_context_new (mix->display);
239 if (!gst_gl_context_create (mix->context, mix->other_context, &error))
243 if (pool == NULL && need_pool) {
246 if (!gst_video_info_from_caps (&info, caps))
249 GST_DEBUG_OBJECT (mix, "create new pool");
250 pool = gst_gl_buffer_pool_new (mix->context);
252 /* the normal size of a frame */
255 config = gst_buffer_pool_get_config (pool);
256 gst_buffer_pool_config_set_params (config, caps, size, 0, 0);
257 if (!gst_buffer_pool_set_config (pool, config))
262 gst_query_add_allocation_pool (query, pool, size, 1, 0);
263 gst_object_unref (pool);
266 /* we also support various metadata */
267 if (mix->context->gl_vtable->FenceSync)
268 gst_query_add_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, 0);
270 _init_upload (mix, pad);
272 gst_gl_upload_propose_allocation (pad->upload, decide_query, query);
279 GST_DEBUG_OBJECT (mix, "no caps specified");
284 GST_DEBUG_OBJECT (mix, "invalid caps specified");
289 GST_DEBUG_OBJECT (mix, "failed setting config");
294 GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s", error->message),
301 gst_gl_mixer_pad_sink_acceptcaps (GstPad * pad, GstGLMixer * mix,
305 GstCaps *template_caps;
307 GST_DEBUG_OBJECT (pad, "try accept caps of %" GST_PTR_FORMAT, caps);
309 template_caps = gst_pad_get_pad_template_caps (pad);
310 template_caps = gst_caps_make_writable (template_caps);
312 ret = gst_caps_can_intersect (caps, template_caps);
313 GST_DEBUG_OBJECT (pad, "%saccepted caps %" GST_PTR_FORMAT,
314 (ret ? "" : "not "), caps);
315 gst_caps_unref (template_caps);
321 gst_gl_mixer_set_caps_features (const GstCaps * caps,
322 const gchar * feature_name)
324 GstCaps *ret = gst_gl_caps_replace_all_caps_features (caps, feature_name);
325 gst_caps_set_simple (ret, "format", G_TYPE_STRING, "RGBA", NULL);
330 gst_gl_mixer_update_caps (GstGLMixer * mix, GstCaps * caps)
332 GstCaps *result, *tmp;
335 gst_gl_color_convert_transform_caps (mix->context, GST_PAD_SRC, caps,
338 GST_DEBUG_OBJECT (mix, "convert returned caps %" GST_PTR_FORMAT, tmp);
340 result = gst_gl_upload_transform_caps (mix->context, GST_PAD_SRC, tmp, NULL);
341 gst_caps_unref (tmp);
343 GST_DEBUG_OBJECT (mix, "transfer returned caps %" GST_PTR_FORMAT, tmp);
349 gst_gl_mixer_pad_sink_getcaps (GstPad * pad, GstGLMixer * mix, GstCaps * filter)
352 GstCaps *template_caps;
353 GstCaps *filtered_caps;
354 GstCaps *returned_caps;
355 gboolean had_current_caps = TRUE;
357 template_caps = gst_pad_get_pad_template_caps (pad);
359 sinkcaps = gst_pad_get_current_caps (pad);
360 if (sinkcaps == NULL) {
361 had_current_caps = FALSE;
362 sinkcaps = template_caps;
365 gst_caps_merge (sinkcaps, gst_gl_mixer_update_caps (mix, sinkcaps));
368 filtered_caps = sinkcaps;
370 filtered_caps = gst_caps_intersect (sinkcaps, filter);
371 returned_caps = gst_caps_intersect (filtered_caps, template_caps);
374 gst_caps_unref (filtered_caps);
375 if (had_current_caps)
376 gst_caps_unref (template_caps);
378 GST_DEBUG_OBJECT (pad, "returning %" GST_PTR_FORMAT, returned_caps);
380 return returned_caps;
384 gst_gl_mixer_sink_query (GstAggregator * agg, GstAggregatorPad * bpad,
387 gboolean ret = FALSE;
388 GstGLMixer *mix = GST_GL_MIXER (agg);
389 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
390 GstGLMixerPad *pad = GST_GL_MIXER_PAD (bpad);
392 GST_TRACE ("QUERY %" GST_PTR_FORMAT, query);
394 switch (GST_QUERY_TYPE (query)) {
397 GstCaps *filter, *caps;
399 gst_query_parse_caps (query, &filter);
400 caps = gst_gl_mixer_pad_sink_getcaps (GST_PAD (bpad), mix, filter);
401 gst_query_set_caps_result (query, caps);
402 gst_caps_unref (caps);
406 case GST_QUERY_ACCEPT_CAPS:
410 gst_query_parse_accept_caps (query, &caps);
411 ret = gst_gl_mixer_pad_sink_acceptcaps (GST_PAD (bpad), mix, caps);
412 gst_query_set_accept_caps_result (query, ret);
416 case GST_QUERY_ALLOCATION:
418 GstQuery *decide_query = NULL;
420 GST_OBJECT_LOCK (mix);
421 if (G_UNLIKELY (!mix->priv->negotiated)) {
422 GST_DEBUG_OBJECT (mix,
423 "not negotiated yet, can't answer ALLOCATION query");
424 GST_OBJECT_UNLOCK (mix);
427 if ((decide_query = mix->priv->query))
428 gst_query_ref (decide_query);
429 GST_OBJECT_UNLOCK (mix);
431 GST_DEBUG_OBJECT (mix,
432 "calling propose allocation with query %" GST_PTR_FORMAT,
435 /* pass the query to the propose_allocation vmethod if any */
436 ret = gst_gl_mixer_propose_allocation (mix, pad, decide_query, query);
439 gst_query_unref (decide_query);
441 GST_DEBUG_OBJECT (mix, "ALLOCATION ret %d, %" GST_PTR_FORMAT, ret, query);
444 case GST_QUERY_CONTEXT:
446 ret = gst_gl_handle_context_query ((GstElement *) mix, query,
447 &mix->display, &mix->other_context);
449 gst_gl_display_filter_gl_api (mix->display,
450 mix_class->supported_gl_api);
454 ret = GST_AGGREGATOR_CLASS (parent_class)->sink_query (agg, bpad, query);
462 gst_gl_mixer_pad_init (GstGLMixerPad * mixerpad)
466 /* GLMixer signals and args */
479 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
482 GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
483 (GST_CAPS_FEATURE_MEMORY_GL_MEMORY,
485 GST_VIDEO_CAPS_MAKE_WITH_FEATURES
486 (GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META,
488 "; " GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS))
491 static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink_%u",
494 GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
495 (GST_CAPS_FEATURE_MEMORY_GL_MEMORY,
497 #if GST_GL_HAVE_PLATFORM_EGL
498 GST_VIDEO_CAPS_MAKE_WITH_FEATURES (GST_CAPS_FEATURE_MEMORY_EGL_IMAGE,
501 GST_VIDEO_CAPS_MAKE_WITH_FEATURES
502 (GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META,
504 "; " GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS))
507 static gboolean gst_gl_mixer_src_query (GstAggregator * agg, GstQuery * query);
509 gst_gl_mixer_get_output_buffer (GstVideoAggregator * videoaggregator,
510 GstBuffer ** outbuf);
512 gst_gl_mixer_src_activate_mode (GstAggregator * aggregator, GstPadMode mode,
514 static gboolean gst_gl_mixer_stop (GstAggregator * agg);
515 static gboolean gst_gl_mixer_start (GstAggregator * agg);
518 gst_gl_mixer_aggregate_frames (GstVideoAggregator * vagg,
519 GstBuffer * outbuffer);
521 static void gst_gl_mixer_set_property (GObject * object, guint prop_id,
522 const GValue * value, GParamSpec * pspec);
523 static void gst_gl_mixer_get_property (GObject * object, guint prop_id,
524 GValue * value, GParamSpec * pspec);
526 static gboolean gst_gl_mixer_decide_allocation (GstGLMixer * mix,
528 static gboolean gst_gl_mixer_set_allocation (GstGLMixer * mix,
529 GstBufferPool * pool, GstAllocator * allocator,
530 GstAllocationParams * params, GstQuery * query);
532 static void gst_gl_mixer_finalize (GObject * object);
535 gst_gl_mixer_class_init (GstGLMixerClass * klass)
537 GObjectClass *gobject_class;
538 GstElementClass *element_class;
540 GstVideoAggregatorClass *videoaggregator_class =
541 (GstVideoAggregatorClass *) klass;
542 GstAggregatorClass *agg_class = (GstAggregatorClass *) klass;
544 GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "glmixer", 0, "opengl mixer");
546 gobject_class = (GObjectClass *) klass;
547 element_class = GST_ELEMENT_CLASS (klass);
549 g_type_class_add_private (klass, sizeof (GstGLMixerPrivate));
551 gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_gl_mixer_finalize);
553 gobject_class->get_property = gst_gl_mixer_get_property;
554 gobject_class->set_property = gst_gl_mixer_set_property;
556 gst_element_class_add_pad_template (element_class,
557 gst_static_pad_template_get (&src_factory));
558 gst_element_class_add_pad_template (element_class,
559 gst_static_pad_template_get (&sink_factory));
561 element_class->set_context = GST_DEBUG_FUNCPTR (gst_gl_mixer_set_context);
563 agg_class->sinkpads_type = GST_TYPE_GL_MIXER_PAD;
564 agg_class->sink_query = gst_gl_mixer_sink_query;
565 agg_class->src_query = gst_gl_mixer_src_query;
566 agg_class->src_activate = gst_gl_mixer_src_activate_mode;
567 agg_class->stop = gst_gl_mixer_stop;
568 agg_class->start = gst_gl_mixer_start;
570 videoaggregator_class->aggregate_frames = gst_gl_mixer_aggregate_frames;
571 videoaggregator_class->get_output_buffer = gst_gl_mixer_get_output_buffer;
572 videoaggregator_class->negotiated_caps = _negotiated_caps;
573 videoaggregator_class->find_best_format = NULL;
575 g_object_class_install_property (gobject_class, PROP_CONTEXT,
576 g_param_spec_object ("context",
578 "Get OpenGL context",
579 GST_GL_TYPE_CONTEXT, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
581 /* Register the pad class */
582 g_type_class_ref (GST_TYPE_GL_MIXER_PAD);
584 klass->set_caps = NULL;
585 klass->supported_gl_api = GST_GL_API_ANY;
589 gst_gl_mixer_reset (GstGLMixer * mix)
591 /* clean up collect data */
592 mix->priv->negotiated = FALSE;
596 gst_gl_mixer_init (GstGLMixer * mix)
598 mix->priv = GST_GL_MIXER_GET_PRIVATE (mix);
599 mix->array_buffers = 0;
602 mix->depthbuffer = 0;
604 mix->priv->gl_resource_ready = FALSE;
605 g_mutex_init (&mix->priv->gl_resource_lock);
606 g_cond_init (&mix->priv->gl_resource_cond);
607 /* initialize variables */
608 gst_gl_mixer_reset (mix);
612 gst_gl_mixer_finalize (GObject * object)
614 GstGLMixer *mix = GST_GL_MIXER (object);
615 GstGLMixerPrivate *priv = mix->priv;
617 if (mix->other_context) {
618 gst_object_unref (mix->other_context);
619 mix->other_context = NULL;
622 g_mutex_clear (&priv->gl_resource_lock);
623 g_cond_clear (&priv->gl_resource_cond);
624 G_OBJECT_CLASS (parent_class)->finalize (object);
628 gst_gl_mixer_set_context (GstElement * element, GstContext * context)
630 GstGLMixer *mix = GST_GL_MIXER (element);
631 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
633 gst_gl_handle_set_context (element, context, &mix->display,
634 &mix->other_context);
637 gst_gl_display_filter_gl_api (mix->display, mix_class->supported_gl_api);
641 gst_gl_mixer_activate (GstGLMixer * mix, gboolean active)
643 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
644 gboolean result = TRUE;
647 if (!gst_gl_ensure_element_data (mix, &mix->display, &mix->other_context))
650 gst_gl_display_filter_gl_api (mix->display, mix_class->supported_gl_api);
657 gst_gl_mixer_src_activate_mode (GstAggregator * aggregator, GstPadMode mode,
661 gboolean result = FALSE;
663 mix = GST_GL_MIXER (aggregator);
666 case GST_PAD_MODE_PUSH:
667 case GST_PAD_MODE_PULL:
668 result = gst_gl_mixer_activate (mix, active);
678 gst_gl_mixer_query_caps (GstPad * pad, GstAggregator * agg, GstQuery * query)
680 GstGLMixer *mix = GST_GL_MIXER (agg);
681 GstCaps *filter, *current_caps, *retcaps, *gl_caps;
683 gst_query_parse_caps (query, &filter);
685 current_caps = gst_pad_get_current_caps (pad);
686 if (current_caps == NULL)
687 current_caps = gst_pad_get_pad_template_caps (agg->srcpad);
689 /* convert from current caps to GLMemory caps */
691 gst_caps_merge (gst_gl_mixer_set_caps_features
692 (current_caps, GST_CAPS_FEATURE_MEMORY_GL_MEMORY),
693 gst_gl_mixer_set_caps_features (current_caps,
694 GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META));
696 gst_gl_download_transform_caps (mix->context, GST_PAD_SINK, current_caps,
698 retcaps = gst_caps_merge (gl_caps, retcaps);
699 gst_caps_unref (current_caps);
703 gst_caps_intersect_full (filter, retcaps, GST_CAPS_INTERSECT_FIRST);
704 gst_caps_unref (retcaps);
705 retcaps = current_caps;
708 gst_query_set_caps_result (query, retcaps);
709 gst_caps_unref (retcaps);
715 gst_gl_mixer_src_query (GstAggregator * agg, GstQuery * query)
717 gboolean res = FALSE;
718 GstGLMixer *mix = GST_GL_MIXER (agg);
719 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
721 switch (GST_QUERY_TYPE (query)) {
722 case GST_QUERY_CONTEXT:
724 res = gst_gl_handle_context_query ((GstElement *) mix, query,
725 &mix->display, &mix->other_context);
727 gst_gl_display_filter_gl_api (mix->display,
728 mix_class->supported_gl_api);
732 res = gst_gl_mixer_query_caps (agg->srcpad, agg, query);
735 res = GST_AGGREGATOR_CLASS (parent_class)->src_query (agg, query);
743 gst_gl_mixer_get_output_buffer (GstVideoAggregator * videoaggregator,
746 GstGLMixer *mix = GST_GL_MIXER (videoaggregator);
748 if (!mix->priv->pool_active) {
749 if (!gst_buffer_pool_set_active (mix->priv->pool, TRUE)) {
750 GST_ELEMENT_ERROR (mix, RESOURCE, SETTINGS,
751 ("failed to activate bufferpool"), ("failed to activate bufferpool"));
752 return GST_FLOW_ERROR;
754 mix->priv->pool_active = TRUE;
757 return gst_buffer_pool_acquire_buffer (mix->priv->pool, outbuf, NULL);
761 gst_gl_mixer_decide_allocation (GstGLMixer * mix, GstQuery * query)
763 GstGLMixerClass *mixer_class = GST_GL_MIXER_GET_CLASS (mix);
764 GstBufferPool *pool = NULL;
765 GstStructure *config;
767 guint min, max, size;
768 gboolean update_pool;
769 GError *error = NULL;
771 guint out_width, out_height;
772 GstGLContext *other_context = NULL;
773 GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mix);
774 gboolean same_downstream_gl_context = FALSE;
776 if (!gst_gl_ensure_element_data (mix, &mix->display, &mix->other_context))
779 gst_gl_display_filter_gl_api (mix->display, mixer_class->supported_gl_api);
781 if (gst_query_find_allocation_meta (query,
782 GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, &idx)) {
783 GstGLContext *context;
784 const GstStructure *upload_meta_params;
789 gst_query_parse_nth_allocation_meta (query, idx, &upload_meta_params);
790 if (upload_meta_params) {
791 if (gst_structure_get (upload_meta_params, "gst.gl.GstGLContext",
792 GST_GL_TYPE_CONTEXT, &context, NULL) && context) {
793 GstGLContext *old = mix->context;
795 mix->context = context;
797 gst_object_unref (old);
798 same_downstream_gl_context = TRUE;
799 } else if (gst_structure_get (upload_meta_params, "gst.gl.context.handle",
800 G_TYPE_POINTER, &handle, "gst.gl.context.type", G_TYPE_STRING,
801 &type, "gst.gl.context.apis", G_TYPE_STRING, &apis, NULL)
803 GstGLPlatform platform;
806 GST_DEBUG ("got GL context handle 0x%p with type %s and apis %s",
809 platform = gst_gl_platform_from_string (type);
810 gl_apis = gst_gl_api_from_string (apis);
812 if (gl_apis && platform)
814 gst_gl_context_new_wrapped (mix->display, (guintptr) handle,
820 if (mix->other_context) {
821 if (!other_context) {
822 other_context = mix->other_context;
824 GST_ELEMENT_WARNING (mix, LIBRARY, SETTINGS,
825 ("%s", "Cannot share with more than one GL context"),
826 ("%s", "Cannot share with more than one GL context"));
831 mix->context = gst_gl_context_new (mix->display);
832 if (!gst_gl_context_create (mix->context, other_context, &error))
836 out_width = GST_VIDEO_INFO_WIDTH (&vagg->info);
837 out_height = GST_VIDEO_INFO_HEIGHT (&vagg->info);
839 g_mutex_lock (&mix->priv->gl_resource_lock);
840 mix->priv->gl_resource_ready = FALSE;
842 gst_gl_context_del_fbo (mix->context, mix->fbo, mix->depthbuffer);
844 mix->depthbuffer = 0;
847 if (!gst_gl_context_gen_fbo (mix->context, out_width, out_height,
848 &mix->fbo, &mix->depthbuffer)) {
849 g_cond_signal (&mix->priv->gl_resource_cond);
850 g_mutex_unlock (&mix->priv->gl_resource_lock);
855 gst_gl_context_del_texture (mix->context, &mix->out_tex_id);
856 gst_gl_context_gen_texture (mix->context, &mix->out_tex_id,
857 GST_VIDEO_FORMAT_RGBA, out_width, out_height);
859 gst_query_parse_allocation (query, &caps, NULL);
861 if (mixer_class->set_caps)
862 mixer_class->set_caps (mix, caps);
864 mix->priv->gl_resource_ready = TRUE;
865 g_cond_signal (&mix->priv->gl_resource_cond);
866 g_mutex_unlock (&mix->priv->gl_resource_lock);
868 if (gst_query_get_n_allocation_pools (query) > 0) {
869 gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
875 gst_video_info_init (&vinfo);
876 gst_video_info_from_caps (&vinfo, caps);
882 if (!pool || (!same_downstream_gl_context
883 && gst_query_find_allocation_meta (query, GST_GL_SYNC_META_API_TYPE,
885 && !gst_buffer_pool_has_option (pool,
886 GST_BUFFER_POOL_OPTION_GL_SYNC_META))) {
887 /* can't use this pool */
889 gst_object_unref (pool);
890 pool = gst_gl_buffer_pool_new (mix->context);
892 config = gst_buffer_pool_get_config (pool);
894 gst_buffer_pool_config_set_params (config, caps, size, min, max);
895 gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
896 if (gst_query_find_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, NULL))
897 gst_buffer_pool_config_add_option (config,
898 GST_BUFFER_POOL_OPTION_GL_SYNC_META);
899 gst_buffer_pool_config_add_option (config,
900 GST_BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META);
902 gst_buffer_pool_set_config (pool, config);
905 gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
907 gst_query_add_allocation_pool (query, pool, size, min, max);
909 gst_object_unref (pool);
915 GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s", error->message),
921 /* takes ownership of the pool, allocator and query */
923 gst_gl_mixer_set_allocation (GstGLMixer * mix,
924 GstBufferPool * pool, GstAllocator * allocator,
925 GstAllocationParams * params, GstQuery * query)
927 GstAllocator *oldalloc;
928 GstBufferPool *oldpool;
930 GstGLMixerPrivate *priv = mix->priv;
932 GST_DEBUG ("storing allocation query");
934 GST_OBJECT_LOCK (mix);
935 oldpool = priv->pool;
937 priv->pool_active = FALSE;
939 oldalloc = priv->allocator;
940 priv->allocator = allocator;
942 oldquery = priv->query;
946 priv->params = *params;
948 gst_allocation_params_init (&priv->params);
949 GST_OBJECT_UNLOCK (mix);
952 GST_DEBUG_OBJECT (mix, "deactivating old pool %p", oldpool);
953 gst_buffer_pool_set_active (oldpool, FALSE);
954 gst_object_unref (oldpool);
957 gst_object_unref (oldalloc);
960 gst_query_unref (oldquery);
966 gst_gl_mixer_do_bufferpool (GstGLMixer * mix, GstCaps * outcaps)
969 gboolean result = TRUE;
970 GstBufferPool *pool = NULL;
971 GstAllocator *allocator;
972 GstAllocationParams params;
973 GstAggregator *agg = GST_AGGREGATOR (mix);
975 /* find a pool for the negotiated caps now */
976 GST_DEBUG_OBJECT (mix, "doing allocation query");
977 query = gst_query_new_allocation (outcaps, TRUE);
978 if (!gst_pad_peer_query (agg->srcpad, query)) {
979 /* not a problem, just debug a little */
980 GST_DEBUG_OBJECT (mix, "peer ALLOCATION query failed");
983 GST_DEBUG_OBJECT (mix, "calling decide_allocation");
984 result = gst_gl_mixer_decide_allocation (mix, query);
986 GST_DEBUG_OBJECT (mix, "ALLOCATION (%d) params: %" GST_PTR_FORMAT, result,
990 goto no_decide_allocation;
992 /* we got configuration from our peer or the decide_allocation method,
994 if (gst_query_get_n_allocation_params (query) > 0) {
995 gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
998 gst_allocation_params_init (¶ms);
1001 if (gst_query_get_n_allocation_pools (query) > 0)
1002 gst_query_parse_nth_allocation_pool (query, 0, &pool, NULL, NULL, NULL);
1005 result = gst_gl_mixer_set_allocation (mix, pool, allocator, ¶ms, query);
1010 no_decide_allocation:
1012 GST_WARNING_OBJECT (mix, "Failed to decide allocation");
1013 gst_query_unref (query);
1020 _default_pad_upload_buffer (GstGLMixer * mix, GstGLMixerFrameData * frame,
1023 GstVideoAggregatorPad *vaggpad = GST_VIDEO_AGGREGATOR_PAD (frame->pad);
1024 GstGLMixerPad *pad = frame->pad;
1025 GstBuffer *uploaded_buf, *gl_buffer;
1026 GstVideoInfo gl_info;
1027 GstVideoFrame gl_frame;
1028 GstGLSyncMeta *sync_meta;
1030 gst_video_info_set_format (&gl_info,
1031 GST_VIDEO_FORMAT_RGBA,
1032 GST_VIDEO_INFO_WIDTH (&vaggpad->info),
1033 GST_VIDEO_INFO_HEIGHT (&vaggpad->info));
1035 _init_upload (mix, pad);
1037 sync_meta = gst_buffer_get_gl_sync_meta (vaggpad->buffer);
1039 gst_gl_sync_meta_wait (sync_meta);
1041 if (gst_gl_upload_perform_with_buffer (pad->upload,
1042 vaggpad->buffer, &uploaded_buf) != GST_GL_UPLOAD_DONE) {
1046 if (!(gl_buffer = gst_gl_color_convert_perform (pad->convert, uploaded_buf))) {
1047 gst_buffer_unref (uploaded_buf);
1051 if (!gst_video_frame_map (&gl_frame, &gl_info, gl_buffer,
1052 GST_MAP_READ | GST_MAP_GL)) {
1053 gst_buffer_unref (uploaded_buf);
1054 gst_buffer_unref (gl_buffer);
1058 frame->texture = *(guint *) gl_frame.data[0];
1060 gst_buffer_unref (uploaded_buf);
1061 gst_video_frame_unmap (&gl_frame);
1067 gst_gl_mixer_process_textures (GstGLMixer * mix, GstBuffer * outbuf)
1071 guint out_tex, out_tex_target;
1072 gboolean res = TRUE;
1073 guint array_index = 0;
1074 GstVideoFrame out_frame;
1075 GstElement *element = GST_ELEMENT (mix);
1076 GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mix);
1077 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
1078 GstGLMixerPrivate *priv = mix->priv;
1079 gboolean to_download =
1080 gst_caps_features_is_equal (GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY,
1081 gst_caps_get_features (mix->out_caps, 0));
1082 GstMapFlags out_map_flags = GST_MAP_WRITE;
1084 GST_TRACE ("Processing buffers");
1086 to_download |= !gst_is_gl_memory (gst_buffer_peek_memory (outbuf, 0));
1089 out_map_flags |= GST_MAP_GL;
1091 if (!gst_video_frame_map (&out_frame, &vagg->info, outbuf, out_map_flags)) {
1096 out_tex = *(guint *) out_frame.data[0];
1098 ((GstGLMemory *) gst_buffer_peek_memory (outbuf, 0))->tex_target;
1100 GST_INFO ("Output Buffer does not contain correct memory, "
1101 "attempting to wrap for download");
1104 mix->download = gst_gl_download_new (mix->context);
1106 gst_gl_download_set_format (mix->download, &out_frame.info);
1107 out_tex = mix->out_tex_id;
1108 out_tex_target = GL_TEXTURE_2D;
1111 GST_OBJECT_LOCK (mix);
1112 walk = element->sinkpads;
1114 i = mix->frames->len;
1115 g_ptr_array_set_size (mix->frames, element->numsinkpads);
1116 for (; i < element->numsinkpads; i++)
1117 mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData);
1119 GstGLMixerPad *pad = GST_GL_MIXER_PAD (walk->data);
1120 GstGLMixerPadClass *pad_class = GST_GL_MIXER_PAD_GET_CLASS (pad);
1121 GstVideoAggregatorPad *vaggpad = walk->data;
1122 GstGLMixerFrameData *frame;
1124 frame = g_ptr_array_index (mix->frames, array_index);
1128 walk = g_list_next (walk);
1130 if (vaggpad->buffer != NULL) {
1131 g_assert (pad_class->upload_buffer);
1134 gst_buffer_unref (pad->gl_buffer);
1135 pad->gl_buffer = pad_class->upload_buffer (mix, frame, vaggpad->buffer);
1137 GST_DEBUG_OBJECT (pad,
1138 "uploaded buffer %" GST_PTR_FORMAT " from buffer %" GST_PTR_FORMAT,
1139 pad->gl_buffer, vaggpad->buffer);
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,
1163 out_tex, out_tex_target, out_frame.data)) {
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 walk = g_list_next (walk);
1183 GST_OBJECT_UNLOCK (mix);
1185 gst_video_frame_unmap (&out_frame);
1191 gst_gl_mixer_process_buffers (GstGLMixer * mix, GstBuffer * outbuf)
1194 guint i, array_index = 0;
1195 GstElement *element = GST_ELEMENT (mix);
1196 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
1198 GST_OBJECT_LOCK (mix);
1199 walk = GST_ELEMENT (mix)->sinkpads;
1200 i = mix->frames->len;
1201 g_ptr_array_set_size (mix->frames, element->numsinkpads);
1202 for (; i < element->numsinkpads; i++)
1203 mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData);
1204 while (walk) { /* We walk with this list because it's ordered */
1205 GstVideoAggregatorPad *vaggpad = walk->data;
1207 walk = g_list_next (walk);
1209 if (vaggpad->buffer != NULL) {
1210 /* put buffer into array */
1211 mix->array_buffers->pdata[array_index] = vaggpad->buffer;
1215 GST_OBJECT_UNLOCK (mix);
1217 return mix_class->process_buffers (mix, mix->array_buffers, outbuf);
1222 static GstFlowReturn
1223 gst_gl_mixer_aggregate_frames (GstVideoAggregator * vagg, GstBuffer * outbuf)
1225 gboolean res = FALSE;
1226 GstGLMixer *mix = GST_GL_MIXER (vagg);
1227 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (vagg);
1228 GstGLSyncMeta *sync_meta;
1230 if (mix_class->process_buffers)
1231 res = gst_gl_mixer_process_buffers (mix, outbuf);
1232 else if (mix_class->process_textures)
1233 res = gst_gl_mixer_process_textures (mix, outbuf);
1235 sync_meta = gst_buffer_get_gl_sync_meta (outbuf);
1237 gst_gl_sync_meta_set_sync_point (sync_meta, mix->context);
1239 return res ? GST_FLOW_OK : GST_FLOW_ERROR;
1243 gst_gl_mixer_get_property (GObject * object,
1244 guint prop_id, GValue * value, GParamSpec * pspec)
1246 GstGLMixer *mixer = GST_GL_MIXER (object);
1250 g_value_set_object (value, mixer->context);
1253 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1259 gst_gl_mixer_set_property (GObject * object,
1260 guint prop_id, const GValue * value, GParamSpec * pspec)
1264 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1270 _clean_upload (GstAggregator * agg, GstAggregatorPad * aggpad, gpointer udata)
1272 GstGLMixerPad *pad = GST_GL_MIXER_PAD (aggpad);
1274 if (pad->gl_buffer) {
1275 gst_buffer_unref (pad->gl_buffer);
1276 pad->gl_buffer = NULL;
1280 gst_object_unref (pad->upload);
1285 gst_object_unref (pad->convert);
1286 pad->convert = NULL;
1293 _free_glmixer_frame_data (GstGLMixerFrameData * frame)
1295 g_slice_free1 (sizeof (GstGLMixerFrameData), frame);
1299 gst_gl_mixer_start (GstAggregator * agg)
1302 GstGLMixer *mix = GST_GL_MIXER (agg);
1303 GstElement *element = GST_ELEMENT (agg);
1305 GST_OBJECT_LOCK (mix);
1306 mix->array_buffers = g_ptr_array_new_full (element->numsinkpads,
1307 (GDestroyNotify) _free_glmixer_frame_data);
1308 mix->frames = g_ptr_array_new_full (element->numsinkpads, NULL);
1310 g_ptr_array_set_size (mix->array_buffers, element->numsinkpads);
1311 g_ptr_array_set_size (mix->frames, element->numsinkpads);
1313 for (i = 0; i < element->numsinkpads; i++)
1314 mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData);
1316 GST_OBJECT_UNLOCK (mix);
1322 gst_gl_mixer_stop (GstAggregator * agg)
1324 GstGLMixer *mix = GST_GL_MIXER (agg);
1325 GstGLMixerClass *mixer_class = GST_GL_MIXER_GET_CLASS (mix);
1327 GST_OBJECT_LOCK (agg);
1328 g_ptr_array_free (mix->frames, TRUE);
1330 g_ptr_array_free (mix->array_buffers, TRUE);
1331 mix->array_buffers = NULL;
1332 GST_OBJECT_UNLOCK (agg);
1334 if (mixer_class->reset)
1335 mixer_class->reset (mix);
1337 gst_gl_context_del_fbo (mix->context, mix->fbo, mix->depthbuffer);
1339 mix->depthbuffer = 0;
1341 if (mix->download) {
1342 gst_object_unref (mix->download);
1343 mix->download = NULL;
1346 gst_aggregator_iterate_sinkpads (GST_AGGREGATOR (mix), _clean_upload, NULL);
1348 if (mix->priv->query) {
1349 gst_query_unref (mix->priv->query);
1350 mix->priv->query = NULL;
1353 if (mix->priv->pool) {
1354 gst_object_unref (mix->priv->pool);
1355 mix->priv->pool = NULL;
1359 gst_object_unref (mix->display);
1360 mix->display = NULL;
1364 gst_object_unref (mix->context);
1365 mix->context = NULL;
1368 gst_gl_mixer_reset (mix);