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);
200 GstBufferPool *pool = NULL;
201 GstStructure *config;
205 GError *error = NULL;
207 gst_query_parse_allocation (query, &caps, &need_pool);
212 /* FIXME this is not thread safe, this method can be called in parallel */
213 if (!gst_gl_ensure_element_data (mix, &mix->display, &mix->other_context))
216 gst_gl_display_filter_gl_api (mix->display, mix_class->supported_gl_api);
219 mix->context = gst_gl_context_new (mix->display);
220 if (!gst_gl_context_create (mix->context, mix->other_context, &error))
227 if (!gst_video_info_from_caps (&info, caps))
230 GST_DEBUG_OBJECT (mix, "create new pool");
231 pool = gst_gl_buffer_pool_new (mix->context);
233 /* the normal size of a frame */
236 config = gst_buffer_pool_get_config (pool);
237 gst_buffer_pool_config_set_params (config, caps, size, 0, 0);
238 if (!gst_buffer_pool_set_config (pool, config))
243 gst_query_add_allocation_pool (query, pool, size, 1, 0);
244 gst_object_unref (pool);
247 /* we also support various metadata */
248 if (mix->context->gl_vtable->FenceSync)
249 gst_query_add_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, 0);
251 _init_upload (mix, pad);
253 gst_gl_upload_propose_allocation (pad->upload, decide_query, query);
260 GST_DEBUG_OBJECT (mix, "no caps specified");
265 GST_DEBUG_OBJECT (mix, "invalid caps specified");
270 GST_DEBUG_OBJECT (mix, "failed setting config");
275 GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s", error->message),
282 gst_gl_mixer_pad_sink_acceptcaps (GstPad * pad, GstGLMixer * mix,
286 GstCaps *template_caps;
288 GST_DEBUG_OBJECT (pad, "try accept caps of %" GST_PTR_FORMAT, caps);
290 template_caps = gst_pad_get_pad_template_caps (pad);
291 template_caps = gst_caps_make_writable (template_caps);
293 ret = gst_caps_can_intersect (caps, template_caps);
294 GST_DEBUG_OBJECT (pad, "%saccepted caps %" GST_PTR_FORMAT,
295 (ret ? "" : "not "), caps);
296 gst_caps_unref (template_caps);
302 gst_gl_mixer_set_caps_features (const GstCaps * caps,
303 const gchar * feature_name)
305 GstCaps *ret = gst_gl_caps_replace_all_caps_features (caps, feature_name);
306 gst_caps_set_simple (ret, "format", G_TYPE_STRING, "RGBA", NULL);
311 gst_gl_mixer_update_caps (GstGLMixer * mix, GstCaps * caps)
313 GstCaps *result, *tmp;
316 gst_gl_color_convert_transform_caps (mix->context, GST_PAD_SRC, caps,
319 GST_DEBUG_OBJECT (mix, "convert returned caps %" GST_PTR_FORMAT, tmp);
321 result = gst_gl_upload_transform_caps (mix->context, GST_PAD_SRC, tmp, NULL);
322 gst_caps_unref (tmp);
324 GST_DEBUG_OBJECT (mix, "transfer returned caps %" GST_PTR_FORMAT, tmp);
330 gst_gl_mixer_pad_sink_getcaps (GstPad * pad, GstGLMixer * mix, GstCaps * filter)
333 GstCaps *template_caps;
334 GstCaps *filtered_caps;
335 GstCaps *returned_caps;
336 gboolean had_current_caps = TRUE;
338 template_caps = gst_pad_get_pad_template_caps (pad);
340 sinkcaps = gst_pad_get_current_caps (pad);
341 if (sinkcaps == NULL) {
342 had_current_caps = FALSE;
343 sinkcaps = template_caps;
346 gst_caps_merge (sinkcaps, gst_gl_mixer_update_caps (mix, sinkcaps));
349 filtered_caps = sinkcaps;
351 filtered_caps = gst_caps_intersect (sinkcaps, filter);
352 returned_caps = gst_caps_intersect (filtered_caps, template_caps);
355 gst_caps_unref (filtered_caps);
356 if (had_current_caps)
357 gst_caps_unref (template_caps);
359 GST_DEBUG_OBJECT (pad, "returning %" GST_PTR_FORMAT, returned_caps);
361 return returned_caps;
365 gst_gl_mixer_sink_query (GstAggregator * agg, GstAggregatorPad * bpad,
368 gboolean ret = FALSE;
369 GstGLMixer *mix = GST_GL_MIXER (agg);
370 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
371 GstGLMixerPad *pad = GST_GL_MIXER_PAD (bpad);
373 GST_TRACE ("QUERY %" GST_PTR_FORMAT, query);
375 switch (GST_QUERY_TYPE (query)) {
378 GstCaps *filter, *caps;
380 gst_query_parse_caps (query, &filter);
381 caps = gst_gl_mixer_pad_sink_getcaps (GST_PAD (bpad), mix, filter);
382 gst_query_set_caps_result (query, caps);
383 gst_caps_unref (caps);
387 case GST_QUERY_ACCEPT_CAPS:
391 gst_query_parse_accept_caps (query, &caps);
392 ret = gst_gl_mixer_pad_sink_acceptcaps (GST_PAD (bpad), mix, caps);
393 gst_query_set_accept_caps_result (query, ret);
397 case GST_QUERY_ALLOCATION:
399 GstQuery *decide_query = NULL;
401 GST_OBJECT_LOCK (mix);
402 if (G_UNLIKELY (!mix->priv->negotiated)) {
403 GST_DEBUG_OBJECT (mix,
404 "not negotiated yet, can't answer ALLOCATION query");
405 GST_OBJECT_UNLOCK (mix);
408 if ((decide_query = mix->priv->query))
409 gst_query_ref (decide_query);
410 GST_OBJECT_UNLOCK (mix);
412 GST_DEBUG_OBJECT (mix,
413 "calling propose allocation with query %" GST_PTR_FORMAT,
416 /* pass the query to the propose_allocation vmethod if any */
417 ret = gst_gl_mixer_propose_allocation (mix, pad, decide_query, query);
420 gst_query_unref (decide_query);
422 GST_DEBUG_OBJECT (mix, "ALLOCATION ret %d, %" GST_PTR_FORMAT, ret, query);
425 case GST_QUERY_CONTEXT:
427 ret = gst_gl_handle_context_query ((GstElement *) mix, query,
428 &mix->display, &mix->other_context);
430 gst_gl_display_filter_gl_api (mix->display,
431 mix_class->supported_gl_api);
435 ret = GST_AGGREGATOR_CLASS (parent_class)->sink_query (agg, bpad, query);
443 gst_gl_mixer_pad_init (GstGLMixerPad * mixerpad)
447 /* GLMixer signals and args */
460 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
463 GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
464 (GST_CAPS_FEATURE_MEMORY_GL_MEMORY,
466 GST_VIDEO_CAPS_MAKE_WITH_FEATURES
467 (GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META,
469 "; " GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS))
472 static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink_%u",
475 GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
476 (GST_CAPS_FEATURE_MEMORY_GL_MEMORY,
478 #if GST_GL_HAVE_PLATFORM_EGL
479 GST_VIDEO_CAPS_MAKE_WITH_FEATURES (GST_CAPS_FEATURE_MEMORY_EGL_IMAGE,
482 GST_VIDEO_CAPS_MAKE_WITH_FEATURES
483 (GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META,
485 "; " GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS))
488 static gboolean gst_gl_mixer_src_query (GstAggregator * agg, GstQuery * query);
490 gst_gl_mixer_get_output_buffer (GstVideoAggregator * videoaggregator,
491 GstBuffer ** outbuf);
493 gst_gl_mixer_src_activate_mode (GstAggregator * aggregator, GstPadMode mode,
495 static gboolean gst_gl_mixer_stop (GstAggregator * agg);
496 static gboolean gst_gl_mixer_start (GstAggregator * agg);
499 gst_gl_mixer_aggregate_frames (GstVideoAggregator * vagg,
500 GstBuffer * outbuffer);
502 static void gst_gl_mixer_set_property (GObject * object, guint prop_id,
503 const GValue * value, GParamSpec * pspec);
504 static void gst_gl_mixer_get_property (GObject * object, guint prop_id,
505 GValue * value, GParamSpec * pspec);
507 static gboolean gst_gl_mixer_decide_allocation (GstGLMixer * mix,
509 static gboolean gst_gl_mixer_set_allocation (GstGLMixer * mix,
510 GstBufferPool * pool, GstAllocator * allocator,
511 GstAllocationParams * params, GstQuery * query);
513 static void gst_gl_mixer_finalize (GObject * object);
516 gst_gl_mixer_class_init (GstGLMixerClass * klass)
518 GObjectClass *gobject_class;
519 GstElementClass *element_class;
521 GstVideoAggregatorClass *videoaggregator_class =
522 (GstVideoAggregatorClass *) klass;
523 GstAggregatorClass *agg_class = (GstAggregatorClass *) klass;
525 GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "glmixer", 0, "opengl mixer");
527 gobject_class = (GObjectClass *) klass;
528 element_class = GST_ELEMENT_CLASS (klass);
530 g_type_class_add_private (klass, sizeof (GstGLMixerPrivate));
532 gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_gl_mixer_finalize);
534 gobject_class->get_property = gst_gl_mixer_get_property;
535 gobject_class->set_property = gst_gl_mixer_set_property;
537 gst_element_class_add_pad_template (element_class,
538 gst_static_pad_template_get (&src_factory));
539 gst_element_class_add_pad_template (element_class,
540 gst_static_pad_template_get (&sink_factory));
542 element_class->set_context = GST_DEBUG_FUNCPTR (gst_gl_mixer_set_context);
544 agg_class->sinkpads_type = GST_TYPE_GL_MIXER_PAD;
545 agg_class->sink_query = gst_gl_mixer_sink_query;
546 agg_class->src_query = gst_gl_mixer_src_query;
547 agg_class->src_activate = gst_gl_mixer_src_activate_mode;
548 agg_class->stop = gst_gl_mixer_stop;
549 agg_class->start = gst_gl_mixer_start;
551 videoaggregator_class->aggregate_frames = gst_gl_mixer_aggregate_frames;
552 videoaggregator_class->get_output_buffer = gst_gl_mixer_get_output_buffer;
553 videoaggregator_class->negotiated_caps = _negotiated_caps;
554 videoaggregator_class->find_best_format = NULL;
556 g_object_class_install_property (gobject_class, PROP_CONTEXT,
557 g_param_spec_object ("context",
559 "Get OpenGL context",
560 GST_GL_TYPE_CONTEXT, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
562 /* Register the pad class */
563 g_type_class_ref (GST_TYPE_GL_MIXER_PAD);
565 klass->set_caps = NULL;
566 klass->supported_gl_api = GST_GL_API_ANY;
570 gst_gl_mixer_reset (GstGLMixer * mix)
572 /* clean up collect data */
573 mix->priv->negotiated = FALSE;
577 gst_gl_mixer_init (GstGLMixer * mix)
579 mix->priv = GST_GL_MIXER_GET_PRIVATE (mix);
580 mix->array_buffers = 0;
583 mix->depthbuffer = 0;
585 mix->priv->gl_resource_ready = FALSE;
586 g_mutex_init (&mix->priv->gl_resource_lock);
587 g_cond_init (&mix->priv->gl_resource_cond);
588 /* initialize variables */
589 gst_gl_mixer_reset (mix);
593 gst_gl_mixer_finalize (GObject * object)
595 GstGLMixer *mix = GST_GL_MIXER (object);
596 GstGLMixerPrivate *priv = mix->priv;
598 if (mix->other_context) {
599 gst_object_unref (mix->other_context);
600 mix->other_context = NULL;
603 g_mutex_clear (&priv->gl_resource_lock);
604 g_cond_clear (&priv->gl_resource_cond);
605 G_OBJECT_CLASS (parent_class)->finalize (object);
609 gst_gl_mixer_set_context (GstElement * element, GstContext * context)
611 GstGLMixer *mix = GST_GL_MIXER (element);
612 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
614 gst_gl_handle_set_context (element, context, &mix->display,
615 &mix->other_context);
618 gst_gl_display_filter_gl_api (mix->display, mix_class->supported_gl_api);
622 gst_gl_mixer_activate (GstGLMixer * mix, gboolean active)
624 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
625 gboolean result = TRUE;
628 if (!gst_gl_ensure_element_data (mix, &mix->display, &mix->other_context))
631 gst_gl_display_filter_gl_api (mix->display, mix_class->supported_gl_api);
638 gst_gl_mixer_src_activate_mode (GstAggregator * aggregator, GstPadMode mode,
642 gboolean result = FALSE;
644 mix = GST_GL_MIXER (aggregator);
647 case GST_PAD_MODE_PUSH:
648 case GST_PAD_MODE_PULL:
649 result = gst_gl_mixer_activate (mix, active);
659 gst_gl_mixer_query_caps (GstPad * pad, GstAggregator * agg, GstQuery * query)
661 GstGLMixer *mix = GST_GL_MIXER (agg);
662 GstCaps *filter, *current_caps, *retcaps, *gl_caps;
664 gst_query_parse_caps (query, &filter);
666 current_caps = gst_pad_get_current_caps (pad);
667 if (current_caps == NULL)
668 current_caps = gst_pad_get_pad_template_caps (agg->srcpad);
670 /* convert from current caps to GLMemory caps */
672 gst_caps_merge (gst_gl_mixer_set_caps_features
673 (current_caps, GST_CAPS_FEATURE_MEMORY_GL_MEMORY),
674 gst_gl_mixer_set_caps_features (current_caps,
675 GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META));
677 gst_gl_download_transform_caps (mix->context, GST_PAD_SINK, current_caps,
679 retcaps = gst_caps_merge (gl_caps, retcaps);
680 gst_caps_unref (current_caps);
684 gst_caps_intersect_full (filter, retcaps, GST_CAPS_INTERSECT_FIRST);
685 gst_caps_unref (retcaps);
686 retcaps = current_caps;
689 gst_query_set_caps_result (query, retcaps);
690 gst_caps_unref (retcaps);
696 gst_gl_mixer_src_query (GstAggregator * agg, GstQuery * query)
698 gboolean res = FALSE;
699 GstGLMixer *mix = GST_GL_MIXER (agg);
700 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
702 switch (GST_QUERY_TYPE (query)) {
703 case GST_QUERY_CONTEXT:
705 res = gst_gl_handle_context_query ((GstElement *) mix, query,
706 &mix->display, &mix->other_context);
708 gst_gl_display_filter_gl_api (mix->display,
709 mix_class->supported_gl_api);
713 res = gst_gl_mixer_query_caps (agg->srcpad, agg, query);
716 res = GST_AGGREGATOR_CLASS (parent_class)->src_query (agg, query);
724 gst_gl_mixer_get_output_buffer (GstVideoAggregator * videoaggregator,
727 GstGLMixer *mix = GST_GL_MIXER (videoaggregator);
729 if (!mix->priv->pool_active) {
730 if (!gst_buffer_pool_set_active (mix->priv->pool, TRUE)) {
731 GST_ELEMENT_ERROR (mix, RESOURCE, SETTINGS,
732 ("failed to activate bufferpool"), ("failed to activate bufferpool"));
733 return GST_FLOW_ERROR;
735 mix->priv->pool_active = TRUE;
738 return gst_buffer_pool_acquire_buffer (mix->priv->pool, outbuf, NULL);
742 gst_gl_mixer_decide_allocation (GstGLMixer * mix, GstQuery * query)
744 GstGLMixerClass *mixer_class = GST_GL_MIXER_GET_CLASS (mix);
745 GstBufferPool *pool = NULL;
746 GstStructure *config;
748 guint min, max, size;
749 gboolean update_pool;
750 GError *error = NULL;
752 guint out_width, out_height;
753 GstGLContext *other_context = NULL;
754 GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mix);
755 gboolean same_downstream_gl_context = FALSE;
757 if (!gst_gl_ensure_element_data (mix, &mix->display, &mix->other_context))
760 gst_gl_display_filter_gl_api (mix->display, mixer_class->supported_gl_api);
762 if (gst_query_find_allocation_meta (query,
763 GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, &idx)) {
764 GstGLContext *context;
765 const GstStructure *upload_meta_params;
770 gst_query_parse_nth_allocation_meta (query, idx, &upload_meta_params);
771 if (upload_meta_params) {
772 if (gst_structure_get (upload_meta_params, "gst.gl.GstGLContext",
773 GST_GL_TYPE_CONTEXT, &context, NULL) && context) {
774 GstGLContext *old = mix->context;
776 mix->context = context;
778 gst_object_unref (old);
779 same_downstream_gl_context = TRUE;
780 } else if (gst_structure_get (upload_meta_params, "gst.gl.context.handle",
781 G_TYPE_POINTER, &handle, "gst.gl.context.type", G_TYPE_STRING,
782 &type, "gst.gl.context.apis", G_TYPE_STRING, &apis, NULL)
784 GstGLPlatform platform;
787 GST_DEBUG ("got GL context handle 0x%p with type %s and apis %s",
790 platform = gst_gl_platform_from_string (type);
791 gl_apis = gst_gl_api_from_string (apis);
793 if (gl_apis && platform)
795 gst_gl_context_new_wrapped (mix->display, (guintptr) handle,
801 if (mix->other_context) {
802 if (!other_context) {
803 other_context = mix->other_context;
805 GST_ELEMENT_WARNING (mix, LIBRARY, SETTINGS,
806 ("%s", "Cannot share with more than one GL context"),
807 ("%s", "Cannot share with more than one GL context"));
812 mix->context = gst_gl_context_new (mix->display);
813 if (!gst_gl_context_create (mix->context, other_context, &error))
817 out_width = GST_VIDEO_INFO_WIDTH (&vagg->info);
818 out_height = GST_VIDEO_INFO_HEIGHT (&vagg->info);
820 g_mutex_lock (&mix->priv->gl_resource_lock);
821 mix->priv->gl_resource_ready = FALSE;
823 gst_gl_context_del_fbo (mix->context, mix->fbo, mix->depthbuffer);
825 mix->depthbuffer = 0;
828 if (!gst_gl_context_gen_fbo (mix->context, out_width, out_height,
829 &mix->fbo, &mix->depthbuffer)) {
830 g_cond_signal (&mix->priv->gl_resource_cond);
831 g_mutex_unlock (&mix->priv->gl_resource_lock);
836 gst_gl_context_del_texture (mix->context, &mix->out_tex_id);
837 gst_gl_context_gen_texture (mix->context, &mix->out_tex_id,
838 GST_VIDEO_FORMAT_RGBA, out_width, out_height);
840 gst_query_parse_allocation (query, &caps, NULL);
842 if (mixer_class->set_caps)
843 mixer_class->set_caps (mix, caps);
845 mix->priv->gl_resource_ready = TRUE;
846 g_cond_signal (&mix->priv->gl_resource_cond);
847 g_mutex_unlock (&mix->priv->gl_resource_lock);
849 if (gst_query_get_n_allocation_pools (query) > 0) {
850 gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
856 gst_video_info_init (&vinfo);
857 gst_video_info_from_caps (&vinfo, caps);
863 if (!pool || (!same_downstream_gl_context
864 && gst_query_find_allocation_meta (query, GST_GL_SYNC_META_API_TYPE,
866 && !gst_buffer_pool_has_option (pool,
867 GST_BUFFER_POOL_OPTION_GL_SYNC_META))) {
868 /* can't use this pool */
870 gst_object_unref (pool);
871 pool = gst_gl_buffer_pool_new (mix->context);
873 config = gst_buffer_pool_get_config (pool);
875 gst_buffer_pool_config_set_params (config, caps, size, min, max);
876 gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
877 if (gst_query_find_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, NULL))
878 gst_buffer_pool_config_add_option (config,
879 GST_BUFFER_POOL_OPTION_GL_SYNC_META);
880 gst_buffer_pool_config_add_option (config,
881 GST_BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META);
883 gst_buffer_pool_set_config (pool, config);
886 gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
888 gst_query_add_allocation_pool (query, pool, size, min, max);
890 gst_object_unref (pool);
896 GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s", error->message),
902 /* takes ownership of the pool, allocator and query */
904 gst_gl_mixer_set_allocation (GstGLMixer * mix,
905 GstBufferPool * pool, GstAllocator * allocator,
906 GstAllocationParams * params, GstQuery * query)
908 GstAllocator *oldalloc;
909 GstBufferPool *oldpool;
911 GstGLMixerPrivate *priv = mix->priv;
913 GST_DEBUG ("storing allocation query");
915 GST_OBJECT_LOCK (mix);
916 oldpool = priv->pool;
918 priv->pool_active = FALSE;
920 oldalloc = priv->allocator;
921 priv->allocator = allocator;
923 oldquery = priv->query;
927 priv->params = *params;
929 gst_allocation_params_init (&priv->params);
930 GST_OBJECT_UNLOCK (mix);
933 GST_DEBUG_OBJECT (mix, "deactivating old pool %p", oldpool);
934 gst_buffer_pool_set_active (oldpool, FALSE);
935 gst_object_unref (oldpool);
938 gst_object_unref (oldalloc);
941 gst_query_unref (oldquery);
947 gst_gl_mixer_do_bufferpool (GstGLMixer * mix, GstCaps * outcaps)
950 gboolean result = TRUE;
951 GstBufferPool *pool = NULL;
952 GstAllocator *allocator;
953 GstAllocationParams params;
954 GstAggregator *agg = GST_AGGREGATOR (mix);
956 /* find a pool for the negotiated caps now */
957 GST_DEBUG_OBJECT (mix, "doing allocation query");
958 query = gst_query_new_allocation (outcaps, TRUE);
959 if (!gst_pad_peer_query (agg->srcpad, query)) {
960 /* not a problem, just debug a little */
961 GST_DEBUG_OBJECT (mix, "peer ALLOCATION query failed");
964 GST_DEBUG_OBJECT (mix, "calling decide_allocation");
965 result = gst_gl_mixer_decide_allocation (mix, query);
967 GST_DEBUG_OBJECT (mix, "ALLOCATION (%d) params: %" GST_PTR_FORMAT, result,
971 goto no_decide_allocation;
973 /* we got configuration from our peer or the decide_allocation method,
975 if (gst_query_get_n_allocation_params (query) > 0) {
976 gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
979 gst_allocation_params_init (¶ms);
982 if (gst_query_get_n_allocation_pools (query) > 0)
983 gst_query_parse_nth_allocation_pool (query, 0, &pool, NULL, NULL, NULL);
986 result = gst_gl_mixer_set_allocation (mix, pool, allocator, ¶ms, query);
991 no_decide_allocation:
993 GST_WARNING_OBJECT (mix, "Failed to decide allocation");
994 gst_query_unref (query);
1001 _default_pad_upload_buffer (GstGLMixer * mix, GstGLMixerFrameData * frame,
1004 GstVideoAggregatorPad *vaggpad = GST_VIDEO_AGGREGATOR_PAD (frame->pad);
1005 GstGLMixerPad *pad = frame->pad;
1006 GstBuffer *uploaded_buf, *gl_buffer;
1007 GstVideoInfo gl_info;
1008 GstVideoFrame gl_frame;
1009 GstGLSyncMeta *sync_meta;
1011 gst_video_info_set_format (&gl_info,
1012 GST_VIDEO_FORMAT_RGBA,
1013 GST_VIDEO_INFO_WIDTH (&vaggpad->info),
1014 GST_VIDEO_INFO_HEIGHT (&vaggpad->info));
1016 _init_upload (mix, pad);
1018 sync_meta = gst_buffer_get_gl_sync_meta (vaggpad->buffer);
1020 gst_gl_sync_meta_wait (sync_meta);
1022 if (gst_gl_upload_perform_with_buffer (pad->upload,
1023 vaggpad->buffer, &uploaded_buf) != GST_GL_UPLOAD_DONE) {
1027 if (!(gl_buffer = gst_gl_color_convert_perform (pad->convert, uploaded_buf))) {
1028 gst_buffer_unref (uploaded_buf);
1032 if (!gst_video_frame_map (&gl_frame, &gl_info, gl_buffer,
1033 GST_MAP_READ | GST_MAP_GL)) {
1034 gst_buffer_unref (uploaded_buf);
1035 gst_buffer_unref (gl_buffer);
1039 frame->texture = *(guint *) gl_frame.data[0];
1041 gst_buffer_unref (uploaded_buf);
1042 gst_video_frame_unmap (&gl_frame);
1048 gst_gl_mixer_process_textures (GstGLMixer * mix, GstBuffer * outbuf)
1052 guint out_tex, out_tex_target;
1053 gboolean res = TRUE;
1054 guint array_index = 0;
1055 GstVideoFrame out_frame;
1056 GstElement *element = GST_ELEMENT (mix);
1057 GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mix);
1058 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
1059 GstGLMixerPrivate *priv = mix->priv;
1060 gboolean to_download =
1061 gst_caps_features_is_equal (GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY,
1062 gst_caps_get_features (mix->out_caps, 0));
1063 GstMapFlags out_map_flags = GST_MAP_WRITE;
1065 GST_TRACE ("Processing buffers");
1067 to_download |= !gst_is_gl_memory (gst_buffer_peek_memory (outbuf, 0));
1070 out_map_flags |= GST_MAP_GL;
1072 if (!gst_video_frame_map (&out_frame, &vagg->info, outbuf, out_map_flags)) {
1077 out_tex = *(guint *) out_frame.data[0];
1079 ((GstGLMemory *) gst_buffer_peek_memory (outbuf, 0))->tex_target;
1081 GST_INFO ("Output Buffer does not contain correct memory, "
1082 "attempting to wrap for download");
1085 mix->download = gst_gl_download_new (mix->context);
1087 gst_gl_download_set_format (mix->download, &out_frame.info);
1088 out_tex = mix->out_tex_id;
1089 out_tex_target = GL_TEXTURE_2D;
1092 GST_OBJECT_LOCK (mix);
1093 walk = element->sinkpads;
1095 i = mix->frames->len;
1096 g_ptr_array_set_size (mix->frames, element->numsinkpads);
1097 for (; i < element->numsinkpads; i++)
1098 mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData);
1100 GstGLMixerPad *pad = GST_GL_MIXER_PAD (walk->data);
1101 GstGLMixerPadClass *pad_class = GST_GL_MIXER_PAD_GET_CLASS (pad);
1102 GstVideoAggregatorPad *vaggpad = walk->data;
1103 GstGLMixerFrameData *frame;
1105 frame = g_ptr_array_index (mix->frames, array_index);
1109 walk = g_list_next (walk);
1111 if (vaggpad->buffer != NULL) {
1112 g_assert (pad_class->upload_buffer);
1115 gst_buffer_unref (pad->gl_buffer);
1116 pad->gl_buffer = pad_class->upload_buffer (mix, frame, vaggpad->buffer);
1118 GST_DEBUG_OBJECT (pad,
1119 "uploaded buffer %" GST_PTR_FORMAT " from buffer %" GST_PTR_FORMAT,
1120 pad->gl_buffer, vaggpad->buffer);
1126 g_mutex_lock (&priv->gl_resource_lock);
1127 if (!priv->gl_resource_ready)
1128 g_cond_wait (&priv->gl_resource_cond, &priv->gl_resource_lock);
1130 if (!priv->gl_resource_ready) {
1131 g_mutex_unlock (&priv->gl_resource_lock);
1132 GST_ERROR_OBJECT (mix,
1133 "fbo used to render can't be created, do not run process_textures");
1138 mix_class->process_textures (mix, mix->frames, out_tex);
1140 g_mutex_unlock (&priv->gl_resource_lock);
1143 if (!gst_gl_download_perform_with_data (mix->download,
1144 out_tex, out_tex_target, out_frame.data)) {
1145 GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s",
1146 "Failed to download video frame"), (NULL));
1154 walk = GST_ELEMENT (mix)->sinkpads;
1156 GstGLMixerPad *pad = GST_GL_MIXER_PAD (walk->data);
1159 gst_gl_upload_release_buffer (pad->upload);
1161 walk = g_list_next (walk);
1164 GST_OBJECT_UNLOCK (mix);
1166 gst_video_frame_unmap (&out_frame);
1172 gst_gl_mixer_process_buffers (GstGLMixer * mix, GstBuffer * outbuf)
1175 guint i, array_index = 0;
1176 GstElement *element = GST_ELEMENT (mix);
1177 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
1179 GST_OBJECT_LOCK (mix);
1180 walk = GST_ELEMENT (mix)->sinkpads;
1181 i = mix->frames->len;
1182 g_ptr_array_set_size (mix->frames, element->numsinkpads);
1183 for (; i < element->numsinkpads; i++)
1184 mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData);
1185 while (walk) { /* We walk with this list because it's ordered */
1186 GstVideoAggregatorPad *vaggpad = walk->data;
1188 walk = g_list_next (walk);
1190 if (vaggpad->buffer != NULL) {
1191 /* put buffer into array */
1192 mix->array_buffers->pdata[array_index] = vaggpad->buffer;
1196 GST_OBJECT_UNLOCK (mix);
1198 return mix_class->process_buffers (mix, mix->array_buffers, outbuf);
1203 static GstFlowReturn
1204 gst_gl_mixer_aggregate_frames (GstVideoAggregator * vagg, GstBuffer * outbuf)
1206 gboolean res = FALSE;
1207 GstGLMixer *mix = GST_GL_MIXER (vagg);
1208 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (vagg);
1209 GstGLSyncMeta *sync_meta;
1211 if (mix_class->process_buffers)
1212 res = gst_gl_mixer_process_buffers (mix, outbuf);
1213 else if (mix_class->process_textures)
1214 res = gst_gl_mixer_process_textures (mix, outbuf);
1216 sync_meta = gst_buffer_get_gl_sync_meta (outbuf);
1218 gst_gl_sync_meta_set_sync_point (sync_meta, mix->context);
1220 return res ? GST_FLOW_OK : GST_FLOW_ERROR;
1224 gst_gl_mixer_get_property (GObject * object,
1225 guint prop_id, GValue * value, GParamSpec * pspec)
1227 GstGLMixer *mixer = GST_GL_MIXER (object);
1231 g_value_set_object (value, mixer->context);
1234 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1240 gst_gl_mixer_set_property (GObject * object,
1241 guint prop_id, const GValue * value, GParamSpec * pspec)
1245 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1251 _clean_upload (GstAggregator * agg, GstAggregatorPad * aggpad, gpointer udata)
1253 GstGLMixerPad *pad = GST_GL_MIXER_PAD (aggpad);
1255 if (pad->gl_buffer) {
1256 gst_buffer_unref (pad->gl_buffer);
1257 pad->gl_buffer = NULL;
1261 gst_object_unref (pad->upload);
1266 gst_object_unref (pad->convert);
1267 pad->convert = NULL;
1274 _free_glmixer_frame_data (GstGLMixerFrameData * frame)
1276 g_slice_free1 (sizeof (GstGLMixerFrameData), frame);
1280 gst_gl_mixer_start (GstAggregator * agg)
1283 GstGLMixer *mix = GST_GL_MIXER (agg);
1284 GstElement *element = GST_ELEMENT (agg);
1286 GST_OBJECT_LOCK (mix);
1287 mix->array_buffers = g_ptr_array_new_full (element->numsinkpads,
1288 (GDestroyNotify) _free_glmixer_frame_data);
1289 mix->frames = g_ptr_array_new_full (element->numsinkpads, NULL);
1291 g_ptr_array_set_size (mix->array_buffers, element->numsinkpads);
1292 g_ptr_array_set_size (mix->frames, element->numsinkpads);
1294 for (i = 0; i < element->numsinkpads; i++)
1295 mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData);
1297 GST_OBJECT_UNLOCK (mix);
1303 gst_gl_mixer_stop (GstAggregator * agg)
1305 GstGLMixer *mix = GST_GL_MIXER (agg);
1306 GstGLMixerClass *mixer_class = GST_GL_MIXER_GET_CLASS (mix);
1308 GST_OBJECT_LOCK (agg);
1309 g_ptr_array_free (mix->frames, TRUE);
1311 g_ptr_array_free (mix->array_buffers, TRUE);
1312 mix->array_buffers = NULL;
1313 GST_OBJECT_UNLOCK (agg);
1315 if (mixer_class->reset)
1316 mixer_class->reset (mix);
1318 gst_gl_context_del_fbo (mix->context, mix->fbo, mix->depthbuffer);
1320 mix->depthbuffer = 0;
1322 if (mix->download) {
1323 gst_object_unref (mix->download);
1324 mix->download = NULL;
1327 gst_aggregator_iterate_sinkpads (GST_AGGREGATOR (mix), _clean_upload, NULL);
1329 if (mix->priv->query) {
1330 gst_query_unref (mix->priv->query);
1331 mix->priv->query = NULL;
1334 if (mix->priv->pool) {
1335 gst_object_unref (mix->priv->pool);
1336 mix->priv->pool = NULL;
1340 gst_object_unref (mix->display);
1341 mix->display = NULL;
1345 gst_object_unref (mix->context);
1346 mix->context = NULL;
1349 gst_gl_mixer_reset (mix);