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;
91 gobject_class->set_property = gst_gl_mixer_pad_set_property;
92 gobject_class->get_property = gst_gl_mixer_pad_get_property;
94 gobject_class->finalize = gst_gl_mixer_pad_finalize;
98 gst_gl_mixer_pad_finalize (GObject * object)
100 GstGLMixerPad *pad = GST_GL_MIXER_PAD (object);
103 gst_object_unref (pad->upload);
107 G_OBJECT_CLASS (gst_gl_mixer_pad_parent_class)->finalize (object);
111 gst_gl_mixer_pad_get_property (GObject * object, guint prop_id,
112 GValue * value, GParamSpec * pspec)
116 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
122 gst_gl_mixer_pad_set_property (GObject * object, guint prop_id,
123 const GValue * value, GParamSpec * pspec)
127 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
133 _negotiated_caps (GstVideoAggregator * vagg, GstCaps * caps)
135 GstGLMixer *mix = GST_GL_MIXER (vagg);
136 gboolean ret = gst_gl_mixer_do_bufferpool (mix, caps);
138 mix->priv->negotiated = ret;
140 gst_caps_replace (&mix->out_caps, caps);
146 gst_gl_mixer_propose_allocation (GstGLMixer * mix,
147 GstQuery * decide_query, GstQuery * query)
150 GstStructure *config;
154 GError *error = NULL;
155 GstStructure *gl_context;
156 gchar *platform, *gl_apis;
158 GstAllocator *allocator = NULL;
159 GstAllocationParams params;
161 gst_query_parse_allocation (query, &caps, &need_pool);
166 if ((pool = mix->priv->pool))
167 gst_object_ref (pool);
172 /* we had a pool, check caps */
173 GST_DEBUG_OBJECT (mix, "check existing pool caps");
174 config = gst_buffer_pool_get_config (pool);
175 gst_buffer_pool_config_get_params (config, &pcaps, &size, NULL, NULL);
177 if (!gst_caps_is_equal (caps, pcaps)) {
178 GST_DEBUG_OBJECT (mix, "pool has different caps");
179 /* different caps, we can't use this pool */
180 gst_object_unref (pool);
183 gst_structure_free (config);
186 if (!gst_gl_ensure_element_data (mix, &mix->display, &mix->other_context))
190 mix->context = gst_gl_context_new (mix->display);
191 if (!gst_gl_context_create (mix->context, mix->other_context, &error))
195 if (pool == NULL && need_pool) {
198 if (!gst_video_info_from_caps (&info, caps))
201 GST_DEBUG_OBJECT (mix, "create new pool");
202 pool = gst_gl_buffer_pool_new (mix->context);
204 /* the normal size of a frame */
207 config = gst_buffer_pool_get_config (pool);
208 gst_buffer_pool_config_set_params (config, caps, size, 0, 0);
209 if (!gst_buffer_pool_set_config (pool, config))
214 gst_query_add_allocation_pool (query, pool, size, 1, 0);
215 gst_object_unref (pool);
218 /* we also support various metadata */
219 gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, 0);
221 gl_apis = gst_gl_api_to_string (gst_gl_context_get_gl_api (mix->context));
223 gst_gl_platform_to_string (gst_gl_context_get_gl_platform (mix->context));
224 handle = (gpointer) gst_gl_context_get_gl_context (mix->context);
227 gst_structure_new ("GstVideoGLTextureUploadMeta", "gst.gl.GstGLContext",
228 GST_GL_TYPE_CONTEXT, mix->context, "gst.gl.context.handle",
229 G_TYPE_POINTER, handle, "gst.gl.context.type", G_TYPE_STRING, platform,
230 "gst.gl.context.apis", G_TYPE_STRING, gl_apis, NULL);
231 gst_query_add_allocation_meta (query,
232 GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, gl_context);
236 gst_structure_free (gl_context);
238 gst_allocation_params_init (¶ms);
240 allocator = gst_allocator_find (GST_GL_MEMORY_ALLOCATOR);
241 gst_query_add_allocation_param (query, allocator, ¶ms);
242 gst_object_unref (allocator);
249 GST_DEBUG_OBJECT (mix, "no caps specified");
254 GST_DEBUG_OBJECT (mix, "invalid caps specified");
259 GST_DEBUG_OBJECT (mix, "failed setting config");
264 GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s", error->message),
271 gst_gl_mixer_pad_sink_acceptcaps (GstPad * pad, GstGLMixer * mix,
275 GstCaps *template_caps;
277 GST_DEBUG_OBJECT (pad, "try accept caps of %" GST_PTR_FORMAT, caps);
279 template_caps = gst_pad_get_pad_template_caps (pad);
280 template_caps = gst_caps_make_writable (template_caps);
282 ret = gst_caps_can_intersect (caps, template_caps);
283 GST_DEBUG_OBJECT (pad, "%saccepted caps %" GST_PTR_FORMAT,
284 (ret ? "" : "not "), caps);
285 gst_caps_unref (template_caps);
291 gst_gl_mixer_set_caps_features (const GstCaps * caps,
292 const gchar * feature_name)
294 GstCaps *tmp = gst_caps_copy (caps);
295 guint n = gst_caps_get_size (tmp);
298 for (i = 0; i < n; i++) {
299 GstCapsFeatures *features = gst_caps_get_features (tmp, i);
301 guint n_f = gst_caps_features_get_size (features);
303 for (j = 0; j < n_f; j++) {
304 gst_caps_features_remove_id (features,
305 gst_caps_features_get_nth_id (features, j));
309 gst_caps_features_add (features, feature_name);
310 gst_caps_set_simple (tmp, "format", G_TYPE_STRING, "RGBA", NULL);
316 /* copies the given caps */
318 gst_gl_mixer_caps_remove_format_info (GstCaps * caps)
325 res = gst_caps_new_empty ();
327 n = gst_caps_get_size (caps);
328 for (i = 0; i < n; i++) {
329 st = gst_caps_get_structure (caps, i);
330 f = gst_caps_get_features (caps, i);
332 /* If this is already expressed by the existing caps
333 * skip this structure */
334 if (i > 0 && gst_caps_is_subset_structure_full (res, st, f))
337 st = gst_structure_copy (st);
338 /* Only remove format info for the cases when we can actually convert */
339 if (!gst_caps_features_is_any (f)
340 && gst_caps_features_is_equal (f,
341 GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY))
342 gst_structure_remove_fields (st, "format", "colorimetry", "chroma-site",
344 gst_structure_remove_fields (st, "width", "height", NULL);
346 gst_caps_append_structure_full (res, st, gst_caps_features_copy (f));
353 gst_gl_mixer_update_caps (GstGLMixer * mix, GstCaps * caps)
355 GstCaps *result = NULL;
356 GstCaps *glcaps = gst_gl_mixer_set_caps_features (caps,
357 GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
358 #if GST_GL_HAVE_PLATFORM_EGL
359 GstCaps *eglcaps = gst_gl_mixer_set_caps_features (caps,
360 GST_CAPS_FEATURE_MEMORY_EGL_IMAGE);
362 GstCaps *uploadcaps = gst_gl_mixer_set_caps_features (caps,
363 GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META);
365 gst_caps_from_string (GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS));
367 result = gst_caps_new_empty ();
369 result = gst_caps_merge (result, glcaps);
370 #if GST_GL_HAVE_PLATFORM_EGL
371 result = gst_caps_merge (result, eglcaps);
373 result = gst_caps_merge (result, uploadcaps);
374 result = gst_caps_merge (result, raw_caps);
376 result = gst_caps_merge (result, gst_gl_mixer_caps_remove_format_info (caps));
378 GST_DEBUG_OBJECT (mix, "returning %" GST_PTR_FORMAT, result);
384 gst_gl_mixer_pad_sink_getcaps (GstPad * pad, GstGLMixer * mix, GstCaps * filter)
387 GstCaps *template_caps;
388 GstCaps *filtered_caps;
389 GstCaps *returned_caps;
390 gboolean had_current_caps = TRUE;
392 template_caps = gst_pad_get_pad_template_caps (pad);
394 srccaps = gst_pad_get_current_caps (pad);
395 if (srccaps == NULL) {
396 had_current_caps = FALSE;
397 srccaps = template_caps;
399 srccaps = gst_caps_merge (srccaps, gst_gl_mixer_update_caps (mix, srccaps));
402 filtered_caps = srccaps;
404 filtered_caps = gst_caps_intersect (srccaps, filter);
405 returned_caps = gst_caps_intersect (filtered_caps, template_caps);
408 gst_caps_unref (filtered_caps);
409 if (had_current_caps)
410 gst_caps_unref (template_caps);
412 GST_DEBUG_OBJECT (pad, "returning %" GST_PTR_FORMAT, returned_caps);
414 return returned_caps;
418 gst_gl_mixer_sink_query (GstAggregator * agg, GstAggregatorPad * bpad,
421 gboolean ret = FALSE;
422 GstGLMixer *mix = GST_GL_MIXER (agg);
424 GST_TRACE ("QUERY %" GST_PTR_FORMAT, query);
426 switch (GST_QUERY_TYPE (query)) {
429 GstCaps *filter, *caps;
431 gst_query_parse_caps (query, &filter);
432 caps = gst_gl_mixer_pad_sink_getcaps (GST_PAD (bpad), mix, filter);
433 gst_query_set_caps_result (query, caps);
434 gst_caps_unref (caps);
438 case GST_QUERY_ACCEPT_CAPS:
442 gst_query_parse_accept_caps (query, &caps);
443 ret = gst_gl_mixer_pad_sink_acceptcaps (GST_PAD (bpad), mix, caps);
444 gst_query_set_accept_caps_result (query, ret);
448 case GST_QUERY_ALLOCATION:
450 GstQuery *decide_query = NULL;
452 GST_OBJECT_LOCK (mix);
453 if (G_UNLIKELY (!mix->priv->negotiated)) {
454 GST_DEBUG_OBJECT (mix,
455 "not negotiated yet, can't answer ALLOCATION query");
456 GST_OBJECT_UNLOCK (mix);
459 if ((decide_query = mix->priv->query))
460 gst_query_ref (decide_query);
461 GST_OBJECT_UNLOCK (mix);
463 GST_DEBUG_OBJECT (mix,
464 "calling propose allocation with query %" GST_PTR_FORMAT,
467 /* pass the query to the propose_allocation vmethod if any */
468 ret = gst_gl_mixer_propose_allocation (mix, decide_query, query);
471 gst_query_unref (decide_query);
473 GST_DEBUG_OBJECT (mix, "ALLOCATION ret %d, %" GST_PTR_FORMAT, ret, query);
476 case GST_QUERY_CONTEXT:
478 ret = gst_gl_handle_context_query ((GstElement *) mix, query,
479 &mix->display, &mix->other_context);
483 ret = GST_AGGREGATOR_CLASS (parent_class)->sink_query (agg, bpad, query);
491 gst_gl_mixer_pad_init (GstGLMixerPad * mixerpad)
495 /* GLMixer signals and args */
508 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
511 GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
512 (GST_CAPS_FEATURE_MEMORY_GL_MEMORY,
514 GST_VIDEO_CAPS_MAKE_WITH_FEATURES
515 (GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META,
517 "; " GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS))
520 static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink_%u",
523 GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
524 (GST_CAPS_FEATURE_MEMORY_GL_MEMORY,
526 GST_VIDEO_CAPS_MAKE_WITH_FEATURES
527 (GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META,
529 "; " GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS))
532 static gboolean gst_gl_mixer_src_query (GstAggregator * agg, GstQuery * query);
534 gst_gl_mixer_get_output_buffer (GstVideoAggregator * videoaggregator,
535 GstBuffer ** outbuf);
537 gst_gl_mixer_src_activate_mode (GstAggregator * aggregator, GstPadMode mode,
539 static gboolean gst_gl_mixer_stop (GstAggregator * agg);
540 static gboolean gst_gl_mixer_start (GstAggregator * agg);
543 gst_gl_mixer_aggregate_frames (GstVideoAggregator * vagg,
544 GstBuffer * outbuffer);
546 static void gst_gl_mixer_set_property (GObject * object, guint prop_id,
547 const GValue * value, GParamSpec * pspec);
548 static void gst_gl_mixer_get_property (GObject * object, guint prop_id,
549 GValue * value, GParamSpec * pspec);
551 static gboolean gst_gl_mixer_decide_allocation (GstGLMixer * mix,
553 static gboolean gst_gl_mixer_set_allocation (GstGLMixer * mix,
554 GstBufferPool * pool, GstAllocator * allocator,
555 GstAllocationParams * params, GstQuery * query);
557 static void gst_gl_mixer_finalize (GObject * object);
560 gst_gl_mixer_class_init (GstGLMixerClass * klass)
562 GObjectClass *gobject_class;
563 GstElementClass *element_class;
565 GstVideoAggregatorClass *videoaggregator_class =
566 (GstVideoAggregatorClass *) klass;
567 GstAggregatorClass *agg_class = (GstAggregatorClass *) klass;
569 GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "glmixer", 0, "opengl mixer");
571 gobject_class = (GObjectClass *) klass;
572 element_class = GST_ELEMENT_CLASS (klass);
574 g_type_class_add_private (klass, sizeof (GstGLMixerPrivate));
576 gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_gl_mixer_finalize);
578 gobject_class->get_property = gst_gl_mixer_get_property;
579 gobject_class->set_property = gst_gl_mixer_set_property;
581 gst_element_class_add_pad_template (element_class,
582 gst_static_pad_template_get (&src_factory));
583 gst_element_class_add_pad_template (element_class,
584 gst_static_pad_template_get (&sink_factory));
586 element_class->set_context = GST_DEBUG_FUNCPTR (gst_gl_mixer_set_context);
588 agg_class->sinkpads_type = GST_TYPE_GL_MIXER_PAD;
589 agg_class->sink_query = gst_gl_mixer_sink_query;
590 agg_class->src_query = gst_gl_mixer_src_query;
591 agg_class->src_activate = gst_gl_mixer_src_activate_mode;
592 agg_class->stop = gst_gl_mixer_stop;
593 agg_class->start = gst_gl_mixer_start;
595 videoaggregator_class->disable_frame_conversion = TRUE;
596 videoaggregator_class->aggregate_frames = gst_gl_mixer_aggregate_frames;
597 videoaggregator_class->get_output_buffer = gst_gl_mixer_get_output_buffer;
598 videoaggregator_class->negotiated_caps = _negotiated_caps;
600 g_object_class_install_property (gobject_class, PROP_CONTEXT,
601 g_param_spec_object ("context",
603 "Get OpenGL context",
604 GST_GL_TYPE_CONTEXT, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
606 /* Register the pad class */
607 g_type_class_ref (GST_TYPE_GL_MIXER_PAD);
609 klass->set_caps = NULL;
614 gst_gl_mixer_reset (GstGLMixer * mix)
616 /* clean up collect data */
617 mix->priv->negotiated = FALSE;
621 gst_gl_mixer_init (GstGLMixer * mix)
623 mix->priv = GST_GL_MIXER_GET_PRIVATE (mix);
624 mix->array_buffers = 0;
627 mix->depthbuffer = 0;
629 mix->priv->gl_resource_ready = FALSE;
630 g_mutex_init (&mix->priv->gl_resource_lock);
631 g_cond_init (&mix->priv->gl_resource_cond);
632 /* initialize variables */
633 gst_gl_mixer_reset (mix);
637 gst_gl_mixer_finalize (GObject * object)
639 GstGLMixer *mix = GST_GL_MIXER (object);
640 GstGLMixerPrivate *priv = mix->priv;
642 if (mix->other_context) {
643 gst_object_unref (mix->other_context);
644 mix->other_context = NULL;
647 g_mutex_clear (&priv->gl_resource_lock);
648 g_cond_clear (&priv->gl_resource_cond);
649 G_OBJECT_CLASS (parent_class)->finalize (object);
653 gst_gl_mixer_set_context (GstElement * element, GstContext * context)
655 GstGLMixer *mix = GST_GL_MIXER (element);
657 gst_gl_handle_set_context (element, context, &mix->display,
658 &mix->other_context);
662 gst_gl_mixer_activate (GstGLMixer * mix, gboolean active)
664 gboolean result = TRUE;
667 if (!gst_gl_ensure_element_data (mix, &mix->display, &mix->other_context))
675 gst_gl_mixer_src_activate_mode (GstAggregator * aggregator, GstPadMode mode,
679 gboolean result = FALSE;
681 mix = GST_GL_MIXER (aggregator);
684 case GST_PAD_MODE_PUSH:
685 case GST_PAD_MODE_PULL:
686 result = gst_gl_mixer_activate (mix, active);
696 gst_gl_mixer_query_caps (GstPad * pad, GstAggregator * agg, GstQuery * query)
698 GstCaps *filter, *current_caps, *retcaps;
700 gst_query_parse_caps (query, &filter);
702 current_caps = gst_pad_get_current_caps (pad);
703 if (current_caps == NULL)
704 current_caps = gst_pad_get_pad_template_caps (agg->srcpad);
706 retcaps = gst_gl_mixer_caps_remove_format_info (current_caps);
707 gst_caps_unref (current_caps);
711 gst_caps_intersect_full (filter, retcaps, GST_CAPS_INTERSECT_FIRST);
713 gst_query_set_caps_result (query, retcaps);
714 gst_caps_unref (retcaps);
720 gst_gl_mixer_src_query (GstAggregator * agg, GstQuery * query)
722 gboolean res = FALSE;
723 GstGLMixer *mix = GST_GL_MIXER (agg);
725 switch (GST_QUERY_TYPE (query)) {
726 case GST_QUERY_CONTEXT:
728 res = gst_gl_handle_context_query ((GstElement *) mix, query,
729 &mix->display, &mix->other_context);
733 res = gst_gl_mixer_query_caps (agg->srcpad, agg, query);
736 res = GST_AGGREGATOR_CLASS (parent_class)->src_query (agg, query);
744 gst_gl_mixer_get_output_buffer (GstVideoAggregator * videoaggregator,
747 GstGLMixer *mix = GST_GL_MIXER (videoaggregator);
749 if (!mix->priv->pool_active) {
750 if (!gst_buffer_pool_set_active (mix->priv->pool, TRUE)) {
751 GST_ELEMENT_ERROR (mix, RESOURCE, SETTINGS,
752 ("failed to activate bufferpool"), ("failed to activate bufferpool"));
753 return GST_FLOW_ERROR;
755 mix->priv->pool_active = TRUE;
758 return gst_buffer_pool_acquire_buffer (mix->priv->pool, outbuf, NULL);
762 gst_gl_mixer_decide_allocation (GstGLMixer * mix, GstQuery * query)
764 GstGLMixerClass *mixer_class = GST_GL_MIXER_GET_CLASS (mix);
765 GstBufferPool *pool = NULL;
766 GstStructure *config;
768 guint min, max, size;
769 gboolean update_pool;
770 GError *error = NULL;
772 guint out_width, out_height;
773 GstGLContext *other_context = NULL;
774 GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mix);
776 if (!gst_gl_ensure_element_data (mix, &mix->display, &mix->other_context))
779 if (gst_query_find_allocation_meta (query,
780 GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, &idx)) {
781 GstGLContext *context;
782 const GstStructure *upload_meta_params;
787 gst_query_parse_nth_allocation_meta (query, idx, &upload_meta_params);
788 if (upload_meta_params) {
789 if (gst_structure_get (upload_meta_params, "gst.gl.GstGLContext",
790 GST_GL_TYPE_CONTEXT, &context, NULL) && context) {
791 GstGLContext *old = mix->context;
793 mix->context = context;
795 gst_object_unref (old);
796 } else if (gst_structure_get (upload_meta_params, "gst.gl.context.handle",
797 G_TYPE_POINTER, &handle, "gst.gl.context.type", G_TYPE_STRING,
798 &type, "gst.gl.context.apis", G_TYPE_STRING, &apis, NULL)
800 GstGLPlatform platform;
803 GST_DEBUG ("got GL context handle 0x%p with type %s and apis %s",
806 platform = gst_gl_platform_from_string (type);
807 gl_apis = gst_gl_api_from_string (apis);
809 if (gl_apis && platform)
811 gst_gl_context_new_wrapped (mix->display, (guintptr) handle,
817 if (mix->other_context) {
818 if (!other_context) {
819 other_context = mix->other_context;
821 GST_ELEMENT_WARNING (mix, LIBRARY, SETTINGS,
822 ("%s", "Cannot share with more than one GL context"),
823 ("%s", "Cannot share with more than one GL context"));
828 mix->context = gst_gl_context_new (mix->display);
829 if (!gst_gl_context_create (mix->context, other_context, &error))
833 out_width = GST_VIDEO_INFO_WIDTH (&vagg->info);
834 out_height = GST_VIDEO_INFO_HEIGHT (&vagg->info);
836 g_mutex_lock (&mix->priv->gl_resource_lock);
837 mix->priv->gl_resource_ready = FALSE;
839 gst_gl_context_del_fbo (mix->context, mix->fbo, mix->depthbuffer);
841 mix->depthbuffer = 0;
844 if (!gst_gl_context_gen_fbo (mix->context, out_width, out_height,
845 &mix->fbo, &mix->depthbuffer)) {
846 g_cond_signal (&mix->priv->gl_resource_cond);
847 g_mutex_unlock (&mix->priv->gl_resource_lock);
852 gst_gl_context_del_texture (mix->context, &mix->out_tex_id);
853 gst_gl_context_gen_texture (mix->context, &mix->out_tex_id,
854 GST_VIDEO_FORMAT_RGBA, out_width, out_height);
856 gst_query_parse_allocation (query, &caps, NULL);
858 if (mixer_class->set_caps)
859 mixer_class->set_caps (mix, caps);
861 mix->priv->gl_resource_ready = TRUE;
862 g_cond_signal (&mix->priv->gl_resource_cond);
863 g_mutex_unlock (&mix->priv->gl_resource_lock);
865 if (gst_query_get_n_allocation_pools (query) > 0) {
866 gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
872 gst_video_info_init (&vinfo);
873 gst_video_info_from_caps (&vinfo, caps);
880 pool = gst_gl_buffer_pool_new (mix->context);
882 config = gst_buffer_pool_get_config (pool);
883 gst_buffer_pool_config_set_params (config, caps, size, min, max);
885 gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
886 gst_buffer_pool_config_add_option (config,
887 GST_BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META);
889 gst_buffer_pool_set_config (pool, config);
892 gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
894 gst_query_add_allocation_pool (query, pool, size, min, max);
896 gst_object_unref (pool);
902 GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s", error->message),
908 /* takes ownership of the pool, allocator and query */
910 gst_gl_mixer_set_allocation (GstGLMixer * mix,
911 GstBufferPool * pool, GstAllocator * allocator,
912 GstAllocationParams * params, GstQuery * query)
914 GstAllocator *oldalloc;
915 GstBufferPool *oldpool;
917 GstGLMixerPrivate *priv = mix->priv;
919 GST_DEBUG ("storing allocation query");
921 GST_OBJECT_LOCK (mix);
922 oldpool = priv->pool;
924 priv->pool_active = FALSE;
926 oldalloc = priv->allocator;
927 priv->allocator = allocator;
929 oldquery = priv->query;
933 priv->params = *params;
935 gst_allocation_params_init (&priv->params);
936 GST_OBJECT_UNLOCK (mix);
939 GST_DEBUG_OBJECT (mix, "deactivating old pool %p", oldpool);
940 gst_buffer_pool_set_active (oldpool, FALSE);
941 gst_object_unref (oldpool);
944 gst_object_unref (oldalloc);
947 gst_query_unref (oldquery);
953 gst_gl_mixer_do_bufferpool (GstGLMixer * mix, GstCaps * outcaps)
956 gboolean result = TRUE;
957 GstBufferPool *pool = NULL;
958 GstAllocator *allocator;
959 GstAllocationParams params;
960 GstAggregator *agg = GST_AGGREGATOR (mix);
962 /* find a pool for the negotiated caps now */
963 GST_DEBUG_OBJECT (mix, "doing allocation query");
964 query = gst_query_new_allocation (outcaps, TRUE);
965 if (!gst_pad_peer_query (agg->srcpad, query)) {
966 /* not a problem, just debug a little */
967 GST_DEBUG_OBJECT (mix, "peer ALLOCATION query failed");
970 GST_DEBUG_OBJECT (mix, "calling decide_allocation");
971 result = gst_gl_mixer_decide_allocation (mix, query);
973 GST_DEBUG_OBJECT (mix, "ALLOCATION (%d) params: %" GST_PTR_FORMAT, result,
977 goto no_decide_allocation;
979 /* we got configuration from our peer or the decide_allocation method,
981 if (gst_query_get_n_allocation_params (query) > 0) {
982 gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
985 gst_allocation_params_init (¶ms);
988 if (gst_query_get_n_allocation_pools (query) > 0)
989 gst_query_parse_nth_allocation_pool (query, 0, &pool, NULL, NULL, NULL);
992 result = gst_gl_mixer_set_allocation (mix, pool, allocator, ¶ms, query);
997 no_decide_allocation:
999 GST_WARNING_OBJECT (mix, "Failed to decide allocation");
1000 gst_query_unref (query);
1007 gst_gl_mixer_process_textures (GstGLMixer * mix, GstBuffer * outbuf)
1012 gboolean res = TRUE;
1013 guint array_index = 0;
1014 GstVideoFrame out_frame;
1015 GstElement *element = GST_ELEMENT (mix);
1016 GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mix);
1017 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
1018 GstGLMixerPrivate *priv = mix->priv;
1019 gboolean to_download =
1020 gst_caps_features_is_equal (GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY,
1021 gst_caps_get_features (mix->out_caps, 0));
1022 GstMapFlags out_map_flags = GST_MAP_WRITE;
1024 GST_TRACE ("Processing buffers");
1026 to_download |= !gst_is_gl_memory (gst_buffer_peek_memory (outbuf, 0));
1029 out_map_flags |= GST_MAP_GL;
1031 if (!gst_video_frame_map (&out_frame, &vagg->info, outbuf, out_map_flags)) {
1036 out_tex = *(guint *) out_frame.data[0];
1038 GST_INFO ("Output Buffer does not contain correct memory, "
1039 "attempting to wrap for download");
1042 mix->download = gst_gl_download_new (mix->context);
1044 gst_gl_download_set_format (mix->download, &out_frame.info);
1045 out_tex = mix->out_tex_id;
1048 GST_OBJECT_LOCK (mix);
1049 walk = element->sinkpads;
1051 i = mix->frames->len;
1052 g_ptr_array_set_size (mix->frames, element->numsinkpads);
1053 for (; i < element->numsinkpads; i++)
1054 mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData);
1056 GstGLMixerPad *pad = GST_GL_MIXER_PAD (walk->data);
1057 GstVideoAggregatorPad *vaggpad = walk->data;
1058 GstGLMixerFrameData *frame;
1060 frame = g_ptr_array_index (mix->frames, array_index);
1064 walk = g_list_next (walk);
1066 if (vaggpad->buffer != NULL) {
1069 GstCapsFeatures *gl_features;
1070 GstVideoInfo gl_info;
1071 GstVideoFrame gl_frame;
1073 gst_video_info_set_format (&gl_info,
1074 GST_VIDEO_FORMAT_RGBA,
1075 GST_VIDEO_INFO_WIDTH (&vaggpad->info),
1076 GST_VIDEO_INFO_HEIGHT (&vaggpad->info));
1078 gst_caps_features_from_string (GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
1080 gl_caps = gst_video_info_to_caps (&gl_info);
1081 gst_caps_set_features (gl_caps, 0, gl_features);
1084 GstCaps *in_caps = gst_pad_get_current_caps (GST_PAD (pad));
1086 pad->upload = gst_gl_upload_new (mix->context);
1088 gst_gl_upload_set_caps (pad->upload, in_caps, gl_caps);
1090 gst_caps_unref (in_caps);
1093 if (!gst_gl_upload_perform_with_buffer (pad->upload,
1094 vaggpad->buffer, &gl_buf)) {
1096 pad->mapped = FALSE;
1097 gst_caps_unref (gl_caps);
1101 if (!gst_video_frame_map (&gl_frame, &gl_info, gl_buf,
1102 GST_MAP_READ | GST_MAP_GL)) {
1104 pad->mapped = FALSE;
1105 gst_buffer_unref (gl_buf);
1106 gst_caps_unref (gl_caps);
1111 frame->texture = *(guint *) gl_frame.data[0];
1113 gst_caps_unref (gl_caps);
1114 gst_video_frame_unmap (&gl_frame);
1115 gst_buffer_unref (gl_buf);
1120 g_mutex_lock (&priv->gl_resource_lock);
1121 if (!priv->gl_resource_ready)
1122 g_cond_wait (&priv->gl_resource_cond, &priv->gl_resource_lock);
1124 if (!priv->gl_resource_ready) {
1125 g_mutex_unlock (&priv->gl_resource_lock);
1126 GST_ERROR_OBJECT (mix,
1127 "fbo used to render can't be created, do not run process_textures");
1132 mix_class->process_textures (mix, mix->frames, out_tex);
1134 g_mutex_unlock (&priv->gl_resource_lock);
1137 if (!gst_gl_download_perform_with_data (mix->download, out_tex,
1139 GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s",
1140 "Failed to download video frame"), (NULL));
1148 walk = GST_ELEMENT (mix)->sinkpads;
1150 GstGLMixerPad *pad = GST_GL_MIXER_PAD (walk->data);
1153 gst_gl_upload_release_buffer (pad->upload);
1155 pad->mapped = FALSE;
1156 walk = g_list_next (walk);
1159 GST_OBJECT_UNLOCK (mix);
1161 gst_video_frame_unmap (&out_frame);
1167 gst_gl_mixer_process_buffers (GstGLMixer * mix, GstBuffer * outbuf)
1170 guint i, array_index = 0;
1171 GstElement *element = GST_ELEMENT (mix);
1172 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
1174 GST_OBJECT_LOCK (mix);
1175 walk = GST_ELEMENT (mix)->sinkpads;
1176 i = mix->frames->len;
1177 g_ptr_array_set_size (mix->frames, element->numsinkpads);
1178 for (; i < element->numsinkpads; i++)
1179 mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData);
1180 while (walk) { /* We walk with this list because it's ordered */
1181 GstVideoAggregatorPad *vaggpad = walk->data;
1183 walk = g_list_next (walk);
1185 if (vaggpad->buffer != NULL) {
1186 /* put buffer into array */
1187 mix->array_buffers->pdata[array_index] = vaggpad->buffer;
1191 GST_OBJECT_UNLOCK (mix);
1193 return mix_class->process_buffers (mix, mix->array_buffers, outbuf);
1198 static GstFlowReturn
1199 gst_gl_mixer_aggregate_frames (GstVideoAggregator * vagg, GstBuffer * outbuf)
1201 gboolean res = FALSE;
1202 GstGLMixer *mix = GST_GL_MIXER (vagg);
1203 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (vagg);
1205 if (mix_class->process_buffers)
1206 res = gst_gl_mixer_process_buffers (mix, outbuf);
1207 else if (mix_class->process_textures)
1208 res = gst_gl_mixer_process_textures (mix, outbuf);
1210 return res ? GST_FLOW_OK : GST_FLOW_ERROR;
1214 gst_gl_mixer_get_property (GObject * object,
1215 guint prop_id, GValue * value, GParamSpec * pspec)
1217 GstGLMixer *mixer = GST_GL_MIXER (object);
1221 g_value_set_object (value, mixer->context);
1224 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1230 gst_gl_mixer_set_property (GObject * object,
1231 guint prop_id, const GValue * value, GParamSpec * pspec)
1235 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1241 _clean_upload (GstAggregator * agg, GstPad * aggpad, gpointer udata)
1243 GstGLMixerPad *pad = GST_GL_MIXER_PAD (aggpad);
1246 gst_object_unref (pad->upload);
1254 _free_glmixer_frame_data (GstGLMixerFrameData * frame)
1256 g_slice_free1 (sizeof (GstGLMixerFrameData), frame);
1260 gst_gl_mixer_start (GstAggregator * agg)
1263 GstGLMixer *mix = GST_GL_MIXER (agg);
1264 GstElement *element = GST_ELEMENT (agg);
1266 if (!GST_AGGREGATOR_CLASS (parent_class)->start (agg))
1269 GST_OBJECT_LOCK (mix);
1270 mix->array_buffers = g_ptr_array_new_full (element->numsinkpads,
1271 (GDestroyNotify) _free_glmixer_frame_data);
1272 mix->frames = g_ptr_array_new_full (element->numsinkpads, NULL);
1274 g_ptr_array_set_size (mix->array_buffers, element->numsinkpads);
1275 g_ptr_array_set_size (mix->frames, element->numsinkpads);
1277 for (i = 0; i < element->numsinkpads; i++)
1278 mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData);
1280 GST_OBJECT_UNLOCK (mix);
1286 gst_gl_mixer_stop (GstAggregator * agg)
1288 GstGLMixer *mix = GST_GL_MIXER (agg);
1289 GstGLMixerClass *mixer_class = GST_GL_MIXER_GET_CLASS (mix);
1291 if (!GST_AGGREGATOR_CLASS (parent_class)->stop (agg))
1294 GST_OBJECT_LOCK (agg);
1295 g_ptr_array_free (mix->frames, TRUE);
1297 g_ptr_array_free (mix->array_buffers, TRUE);
1298 mix->array_buffers = NULL;
1299 GST_OBJECT_UNLOCK (agg);
1301 if (mixer_class->reset)
1302 mixer_class->reset (mix);
1304 gst_gl_context_del_fbo (mix->context, mix->fbo, mix->depthbuffer);
1306 mix->depthbuffer = 0;
1308 if (mix->download) {
1309 gst_object_unref (mix->download);
1310 mix->download = NULL;
1313 gst_aggregator_iterate_sinkpads (GST_AGGREGATOR (mix), _clean_upload, NULL);
1315 if (mix->priv->query) {
1316 gst_query_unref (mix->priv->query);
1317 mix->priv->query = NULL;
1320 if (mix->priv->pool) {
1321 gst_object_unref (mix->priv->pool);
1322 mix->priv->pool = NULL;
1326 gst_object_unref (mix->display);
1327 mix->display = NULL;
1331 gst_object_unref (mix->context);
1332 mix->context = NULL;
1335 gst_gl_mixer_reset (mix);