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_sink_query (GstAggregator * agg, GstAggregatorPad * bpad,
274 gboolean ret = FALSE;
275 GstGLMixer *mix = GST_GL_MIXER (agg);
277 GST_TRACE ("QUERY %" GST_PTR_FORMAT, query);
279 switch (GST_QUERY_TYPE (query)) {
280 case GST_QUERY_ALLOCATION:
282 GstQuery *decide_query = NULL;
284 GST_OBJECT_LOCK (mix);
285 if (G_UNLIKELY (!mix->priv->negotiated)) {
286 GST_DEBUG_OBJECT (mix,
287 "not negotiated yet, can't answer ALLOCATION query");
288 GST_OBJECT_UNLOCK (mix);
291 if ((decide_query = mix->priv->query))
292 gst_query_ref (decide_query);
293 GST_OBJECT_UNLOCK (mix);
295 GST_DEBUG_OBJECT (mix,
296 "calling propose allocation with query %" GST_PTR_FORMAT,
299 /* pass the query to the propose_allocation vmethod if any */
300 ret = gst_gl_mixer_propose_allocation (mix, decide_query, query);
303 gst_query_unref (decide_query);
305 GST_DEBUG_OBJECT (mix, "ALLOCATION ret %d, %" GST_PTR_FORMAT, ret, query);
308 case GST_QUERY_CONTEXT:
310 ret = gst_gl_handle_context_query ((GstElement *) mix, query,
311 &mix->display, &mix->other_context);
315 ret = GST_AGGREGATOR_CLASS (parent_class)->sink_query (agg, bpad, query);
323 gst_gl_mixer_pad_init (GstGLMixerPad * mixerpad)
327 /* GLMixer signals and args */
339 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
342 GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
343 (GST_CAPS_FEATURE_MEMORY_GL_MEMORY,
345 GST_VIDEO_CAPS_MAKE_WITH_FEATURES
346 (GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META,
348 "; " GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS))
351 static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink_%u",
354 GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
355 (GST_CAPS_FEATURE_MEMORY_GL_MEMORY,
357 GST_VIDEO_CAPS_MAKE_WITH_FEATURES
358 (GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META,
360 "; " GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS))
363 static gboolean gst_gl_mixer_src_query (GstAggregator * agg, GstQuery * query);
365 gst_gl_mixer_get_output_buffer (GstVideoAggregator * videoaggregator,
366 GstBuffer ** outbuf);
368 gst_gl_mixer_src_activate_mode (GstAggregator * aggregator, GstPadMode mode,
370 static gboolean gst_gl_mixer_stop (GstAggregator * agg);
371 static gboolean gst_gl_mixer_start (GstAggregator * agg);
374 gst_gl_mixer_aggregate_frames (GstVideoAggregator * vagg,
375 GstBuffer * outbuffer);
377 static void gst_gl_mixer_set_property (GObject * object, guint prop_id,
378 const GValue * value, GParamSpec * pspec);
379 static void gst_gl_mixer_get_property (GObject * object, guint prop_id,
380 GValue * value, GParamSpec * pspec);
382 static gboolean gst_gl_mixer_decide_allocation (GstGLMixer * mix,
384 static gboolean gst_gl_mixer_set_allocation (GstGLMixer * mix,
385 GstBufferPool * pool, GstAllocator * allocator,
386 GstAllocationParams * params, GstQuery * query);
388 static void gst_gl_mixer_finalize (GObject * object);
391 gst_gl_mixer_class_init (GstGLMixerClass * klass)
393 GObjectClass *gobject_class;
394 GstElementClass *element_class;
396 GstVideoAggregatorClass *videoaggregator_class =
397 (GstVideoAggregatorClass *) klass;
398 GstAggregatorClass *agg_class = (GstAggregatorClass *) klass;
400 GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "glmixer", 0, "opengl mixer");
402 gobject_class = (GObjectClass *) klass;
403 element_class = GST_ELEMENT_CLASS (klass);
405 g_type_class_add_private (klass, sizeof (GstGLMixerPrivate));
407 gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_gl_mixer_finalize);
409 gobject_class->get_property = gst_gl_mixer_get_property;
410 gobject_class->set_property = gst_gl_mixer_set_property;
412 gst_element_class_add_pad_template (element_class,
413 gst_static_pad_template_get (&src_factory));
414 gst_element_class_add_pad_template (element_class,
415 gst_static_pad_template_get (&sink_factory));
417 element_class->set_context = GST_DEBUG_FUNCPTR (gst_gl_mixer_set_context);
419 agg_class->sinkpads_type = GST_TYPE_GL_MIXER_PAD;
420 agg_class->sink_query = gst_gl_mixer_sink_query;
421 agg_class->src_query = gst_gl_mixer_src_query;
422 agg_class->src_activate = gst_gl_mixer_src_activate_mode;
423 agg_class->stop = gst_gl_mixer_stop;
424 agg_class->start = gst_gl_mixer_start;
426 videoaggregator_class->disable_frame_conversion = TRUE;
427 videoaggregator_class->aggregate_frames = gst_gl_mixer_aggregate_frames;
428 videoaggregator_class->get_output_buffer = gst_gl_mixer_get_output_buffer;
429 videoaggregator_class->negotiated_caps = _negotiated_caps;
432 /* Register the pad class */
433 g_type_class_ref (GST_TYPE_GL_MIXER_PAD);
435 klass->set_caps = NULL;
440 gst_gl_mixer_reset (GstGLMixer * mix)
442 /* clean up collect data */
443 mix->priv->negotiated = FALSE;
447 gst_gl_mixer_init (GstGLMixer * mix)
449 mix->priv = GST_GL_MIXER_GET_PRIVATE (mix);
450 mix->array_buffers = 0;
453 mix->depthbuffer = 0;
455 mix->priv->gl_resource_ready = FALSE;
456 g_mutex_init (&mix->priv->gl_resource_lock);
457 g_cond_init (&mix->priv->gl_resource_cond);
458 /* initialize variables */
459 gst_gl_mixer_reset (mix);
463 gst_gl_mixer_finalize (GObject * object)
465 GstGLMixer *mix = GST_GL_MIXER (object);
466 GstGLMixerPrivate *priv = mix->priv;
468 if (mix->other_context) {
469 gst_object_unref (mix->other_context);
470 mix->other_context = NULL;
473 g_mutex_clear (&priv->gl_resource_lock);
474 g_cond_clear (&priv->gl_resource_cond);
475 G_OBJECT_CLASS (parent_class)->finalize (object);
479 gst_gl_mixer_set_context (GstElement * element, GstContext * context)
481 GstGLMixer *mix = GST_GL_MIXER (element);
483 gst_gl_handle_set_context (element, context, &mix->display, &mix->context);
487 gst_gl_mixer_activate (GstGLMixer * mix, gboolean active)
489 gboolean result = TRUE;
492 if (!gst_gl_ensure_element_data (mix, &mix->display, &mix->other_context))
500 gst_gl_mixer_src_activate_mode (GstAggregator * aggregator, GstPadMode mode,
504 gboolean result = FALSE;
506 mix = GST_GL_MIXER (aggregator);
509 case GST_PAD_MODE_PUSH:
510 case GST_PAD_MODE_PULL:
511 result = gst_gl_mixer_activate (mix, active);
521 gst_gl_mixer_query_caps (GstPad * pad, GstAggregator * agg, GstQuery * query)
523 GstCaps *filter, *caps;
527 GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg);
529 gst_query_parse_caps (query, &filter);
531 if (GST_VIDEO_INFO_FORMAT (&vagg->info) != GST_VIDEO_FORMAT_UNKNOWN) {
532 caps = gst_video_info_to_caps (&vagg->info);
534 caps = gst_pad_get_pad_template_caps (agg->srcpad);
537 caps = gst_caps_make_writable (caps);
539 n = gst_caps_get_size (caps) - 1;
540 for (; n >= 0; n--) {
541 s = gst_caps_get_structure (caps, n);
542 gst_structure_set (s, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
543 "height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
544 if (GST_VIDEO_INFO_FPS_D (&vagg->info) != 0) {
545 gst_structure_set (s,
546 "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
551 caps = gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
553 gst_query_set_caps_result (query, caps);
554 gst_caps_unref (caps);
560 gst_gl_mixer_set_caps_features (const GstCaps * caps,
561 const gchar * feature_name)
563 GstCaps *tmp = gst_caps_copy (caps);
564 guint n = gst_caps_get_size (tmp);
567 for (i = 0; i < n; i++) {
568 GstCapsFeatures *features = gst_caps_get_features (tmp, i);
570 guint n_f = gst_caps_features_get_size (features);
572 for (j = 0; j < n_f; j++) {
573 gst_caps_features_remove_id (features,
574 gst_caps_features_get_nth_id (features, j));
578 gst_caps_features_add (features, feature_name);
579 gst_caps_set_simple (tmp, "format", G_TYPE_STRING, "RGBA", NULL);
585 /* copies the given caps */
587 gst_gl_mixer_caps_remove_format_info (GstCaps * caps)
594 res = gst_caps_new_empty ();
596 n = gst_caps_get_size (caps);
597 for (i = 0; i < n; i++) {
598 st = gst_caps_get_structure (caps, i);
599 f = gst_caps_get_features (caps, i);
601 /* If this is already expressed by the existing caps
602 * skip this structure */
603 if (i > 0 && gst_caps_is_subset_structure_full (res, st, f))
606 st = gst_structure_copy (st);
607 /* Only remove format info for the cases when we can actually convert */
608 if (!gst_caps_features_is_any (f)
609 && gst_caps_features_is_equal (f,
610 GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY))
611 gst_structure_remove_fields (st, "format", "colorimetry", "chroma-site",
612 "width", "height", NULL);
614 gst_caps_append_structure_full (res, st, gst_caps_features_copy (f));
621 gst_gl_mixer_update_caps (GstGLMixer * mix, GstCaps * caps)
623 GstCaps *result = NULL;
624 GstCaps *glcaps = gst_gl_mixer_set_caps_features (caps,
625 GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
626 #if GST_GL_HAVE_PLATFORM_EGL
627 GstCaps *eglcaps = gst_gl_mixer_set_caps_features (caps,
628 GST_CAPS_FEATURE_MEMORY_EGL_IMAGE);
630 GstCaps *uploadcaps = gst_gl_mixer_set_caps_features (caps,
631 GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META);
633 gst_caps_from_string (GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS));
635 result = gst_caps_new_empty ();
637 result = gst_caps_merge (result, glcaps);
638 #if GST_GL_HAVE_PLATFORM_EGL
639 result = gst_caps_merge (result, eglcaps);
641 result = gst_caps_merge (result, uploadcaps);
642 result = gst_caps_merge (result, raw_caps);
644 result = gst_caps_merge (result, gst_gl_mixer_caps_remove_format_info (caps));
646 GST_DEBUG_OBJECT (mix, "returning %" GST_PTR_FORMAT, result);
652 gst_gl_mixer_src_query (GstAggregator * agg, GstQuery * query)
654 gboolean res = FALSE;
655 GstGLMixer *mix = GST_GL_MIXER (agg);
657 switch (GST_QUERY_TYPE (query)) {
658 case GST_QUERY_CONTEXT:
660 res = gst_gl_handle_context_query ((GstElement *) mix, query,
661 &mix->display, &mix->other_context);
665 res = gst_gl_mixer_query_caps (agg->srcpad, agg, query);
668 res = GST_AGGREGATOR_CLASS (parent_class)->src_query (agg, query);
676 gst_gl_mixer_get_output_buffer (GstVideoAggregator * videoaggregator,
679 GstGLMixer *mix = GST_GL_MIXER (videoaggregator);
681 if (!mix->priv->pool_active) {
682 if (!gst_buffer_pool_set_active (mix->priv->pool, TRUE)) {
683 GST_ELEMENT_ERROR (mix, RESOURCE, SETTINGS,
684 ("failed to activate bufferpool"), ("failed to activate bufferpool"));
685 return GST_FLOW_ERROR;
687 mix->priv->pool_active = TRUE;
690 return gst_buffer_pool_acquire_buffer (mix->priv->pool, outbuf, NULL);
694 gst_gl_mixer_decide_allocation (GstGLMixer * mix, GstQuery * query)
696 GstGLMixerClass *mixer_class = GST_GL_MIXER_GET_CLASS (mix);
697 GstBufferPool *pool = NULL;
698 GstStructure *config;
700 guint min, max, size;
701 gboolean update_pool;
702 GError *error = NULL;
704 guint out_width, out_height;
705 GstGLContext *other_context = NULL;
706 GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mix);
708 if (!gst_gl_ensure_element_data (mix, &mix->display, &mix->other_context))
711 if (gst_query_find_allocation_meta (query,
712 GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, &idx)) {
713 GstGLContext *context;
714 const GstStructure *upload_meta_params;
719 gst_query_parse_nth_allocation_meta (query, idx, &upload_meta_params);
720 if (upload_meta_params) {
721 if (gst_structure_get (upload_meta_params, "gst.gl.GstGLContext",
722 GST_GL_TYPE_CONTEXT, &context, NULL) && context) {
723 GstGLContext *old = mix->context;
725 mix->context = context;
727 gst_object_unref (old);
728 } else if (gst_structure_get (upload_meta_params, "gst.gl.context.handle",
729 G_TYPE_POINTER, &handle, "gst.gl.context.type", G_TYPE_STRING,
730 &type, "gst.gl.context.apis", G_TYPE_STRING, &apis, NULL)
732 GstGLPlatform platform;
735 GST_DEBUG ("got GL context handle 0x%p with type %s and apis %s",
738 platform = gst_gl_platform_from_string (type);
739 gl_apis = gst_gl_api_from_string (apis);
741 if (gl_apis && platform)
743 gst_gl_context_new_wrapped (mix->display, (guintptr) handle,
749 if (mix->other_context) {
750 if (!other_context) {
751 other_context = mix->other_context;
753 GST_ELEMENT_WARNING (mix, LIBRARY, SETTINGS,
754 ("%s", "Cannot share with more than one GL context"),
755 ("%s", "Cannot share with more than one GL context"));
760 mix->context = gst_gl_context_new (mix->display);
761 if (!gst_gl_context_create (mix->context, other_context, &error))
765 out_width = GST_VIDEO_INFO_WIDTH (&vagg->info);
766 out_height = GST_VIDEO_INFO_HEIGHT (&vagg->info);
768 g_mutex_lock (&mix->priv->gl_resource_lock);
769 mix->priv->gl_resource_ready = FALSE;
771 gst_gl_context_del_fbo (mix->context, mix->fbo, mix->depthbuffer);
773 mix->depthbuffer = 0;
776 if (!gst_gl_context_gen_fbo (mix->context, out_width, out_height,
777 &mix->fbo, &mix->depthbuffer)) {
778 g_cond_signal (&mix->priv->gl_resource_cond);
779 g_mutex_unlock (&mix->priv->gl_resource_lock);
784 gst_gl_context_del_texture (mix->context, &mix->out_tex_id);
785 gst_gl_context_gen_texture (mix->context, &mix->out_tex_id,
786 GST_VIDEO_FORMAT_RGBA, out_width, out_height);
788 gst_query_parse_allocation (query, &caps, NULL);
790 if (mixer_class->set_caps)
791 mixer_class->set_caps (mix, caps);
793 mix->priv->gl_resource_ready = TRUE;
794 g_cond_signal (&mix->priv->gl_resource_cond);
795 g_mutex_unlock (&mix->priv->gl_resource_lock);
797 if (gst_query_get_n_allocation_pools (query) > 0) {
798 gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
804 gst_video_info_init (&vinfo);
805 gst_video_info_from_caps (&vinfo, caps);
812 pool = gst_gl_buffer_pool_new (mix->context);
814 config = gst_buffer_pool_get_config (pool);
815 gst_buffer_pool_config_set_params (config, caps, size, min, max);
817 gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
818 gst_buffer_pool_config_add_option (config,
819 GST_BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META);
821 gst_buffer_pool_set_config (pool, config);
824 gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
826 gst_query_add_allocation_pool (query, pool, size, min, max);
828 gst_object_unref (pool);
834 GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s", error->message),
840 /* takes ownership of the pool, allocator and query */
842 gst_gl_mixer_set_allocation (GstGLMixer * mix,
843 GstBufferPool * pool, GstAllocator * allocator,
844 GstAllocationParams * params, GstQuery * query)
846 GstAllocator *oldalloc;
847 GstBufferPool *oldpool;
849 GstGLMixerPrivate *priv = mix->priv;
851 GST_DEBUG ("storing allocation query");
853 GST_OBJECT_LOCK (mix);
854 oldpool = priv->pool;
856 priv->pool_active = FALSE;
858 oldalloc = priv->allocator;
859 priv->allocator = allocator;
861 oldquery = priv->query;
865 priv->params = *params;
867 gst_allocation_params_init (&priv->params);
868 GST_OBJECT_UNLOCK (mix);
871 GST_DEBUG_OBJECT (mix, "deactivating old pool %p", oldpool);
872 gst_buffer_pool_set_active (oldpool, FALSE);
873 gst_object_unref (oldpool);
876 gst_object_unref (oldalloc);
879 gst_query_unref (oldquery);
885 gst_gl_mixer_do_bufferpool (GstGLMixer * mix, GstCaps * outcaps)
888 gboolean result = TRUE;
889 GstBufferPool *pool = NULL;
890 GstAllocator *allocator;
891 GstAllocationParams params;
892 GstAggregator *agg = GST_AGGREGATOR (mix);
894 /* find a pool for the negotiated caps now */
895 GST_DEBUG_OBJECT (mix, "doing allocation query");
896 query = gst_query_new_allocation (outcaps, TRUE);
897 if (!gst_pad_peer_query (agg->srcpad, query)) {
898 /* not a problem, just debug a little */
899 GST_DEBUG_OBJECT (mix, "peer ALLOCATION query failed");
902 GST_DEBUG_OBJECT (mix, "calling decide_allocation");
903 result = gst_gl_mixer_decide_allocation (mix, query);
905 GST_DEBUG_OBJECT (mix, "ALLOCATION (%d) params: %" GST_PTR_FORMAT, result,
909 goto no_decide_allocation;
911 /* we got configuration from our peer or the decide_allocation method,
913 if (gst_query_get_n_allocation_params (query) > 0) {
914 gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
917 gst_allocation_params_init (¶ms);
920 if (gst_query_get_n_allocation_pools (query) > 0)
921 gst_query_parse_nth_allocation_pool (query, 0, &pool, NULL, NULL, NULL);
924 result = gst_gl_mixer_set_allocation (mix, pool, allocator, ¶ms, query);
929 no_decide_allocation:
931 GST_WARNING_OBJECT (mix, "Failed to decide allocation");
932 gst_query_unref (query);
939 gst_gl_mixer_process_textures (GstGLMixer * mix, GstBuffer * outbuf)
945 guint array_index = 0;
946 GstVideoFrame out_frame;
947 GstElement *element = GST_ELEMENT (mix);
948 GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mix);
949 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
950 GstGLMixerPrivate *priv = mix->priv;
951 gboolean to_download =
952 gst_caps_features_is_equal (GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY,
953 gst_caps_get_features (mix->out_caps, 0));
954 GstMapFlags out_map_flags = GST_MAP_WRITE;
956 GST_TRACE ("Processing buffers");
958 to_download |= !gst_is_gl_memory (gst_buffer_peek_memory (outbuf, 0));
961 out_map_flags |= GST_MAP_GL;
963 if (!gst_video_frame_map (&out_frame, &vagg->info, outbuf, out_map_flags)) {
968 out_tex = *(guint *) out_frame.data[0];
970 GST_INFO ("Output Buffer does not contain correct memory, "
971 "attempting to wrap for download");
974 mix->download = gst_gl_download_new (mix->context);
976 gst_gl_download_set_format (mix->download, &out_frame.info);
977 out_tex = mix->out_tex_id;
980 GST_OBJECT_LOCK (mix);
981 walk = element->sinkpads;
983 i = mix->frames->len;
984 g_ptr_array_set_size (mix->frames, element->numsinkpads);
985 for (; i < element->numsinkpads; i++)
986 mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData);
988 GstGLMixerPad *pad = GST_GL_MIXER_PAD (walk->data);
989 GstVideoAggregatorPad *vaggpad = walk->data;
990 GstGLMixerFrameData *frame;
992 frame = g_ptr_array_index (mix->frames, array_index);
996 walk = g_list_next (walk);
998 if (vaggpad->buffer != NULL) {
1002 pad->upload = gst_gl_upload_new (mix->context);
1004 gst_gl_upload_set_format (pad->upload, &vaggpad->info);
1007 if (!gst_gl_upload_perform_with_buffer (pad->upload,
1008 vaggpad->buffer, &in_tex, NULL)) {
1010 pad->mapped = FALSE;
1015 frame->texture = in_tex;
1020 g_mutex_lock (&priv->gl_resource_lock);
1021 if (!priv->gl_resource_ready)
1022 g_cond_wait (&priv->gl_resource_cond, &priv->gl_resource_lock);
1024 if (!priv->gl_resource_ready) {
1025 g_mutex_unlock (&priv->gl_resource_lock);
1026 GST_ERROR_OBJECT (mix,
1027 "fbo used to render can't be created, do not run process_textures");
1032 mix_class->process_textures (mix, mix->frames, out_tex);
1034 g_mutex_unlock (&priv->gl_resource_lock);
1037 if (!gst_gl_download_perform_with_data (mix->download, out_tex,
1039 GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s",
1040 "Failed to download video frame"), (NULL));
1048 walk = GST_ELEMENT (mix)->sinkpads;
1050 GstGLMixerPad *pad = GST_GL_MIXER_PAD (walk->data);
1053 gst_gl_upload_release_buffer (pad->upload);
1055 pad->mapped = FALSE;
1056 walk = g_list_next (walk);
1059 GST_OBJECT_UNLOCK (mix);
1061 gst_video_frame_unmap (&out_frame);
1067 gst_gl_mixer_process_buffers (GstGLMixer * mix, GstBuffer * outbuf)
1070 guint i, array_index = 0;
1071 GstElement *element = GST_ELEMENT (mix);
1072 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
1074 GST_OBJECT_LOCK (mix);
1075 walk = GST_ELEMENT (mix)->sinkpads;
1076 i = mix->frames->len;
1077 g_ptr_array_set_size (mix->frames, element->numsinkpads);
1078 for (; i < element->numsinkpads; i++)
1079 mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData);
1080 while (walk) { /* We walk with this list because it's ordered */
1081 GstVideoAggregatorPad *vaggpad = walk->data;
1083 walk = g_list_next (walk);
1085 if (vaggpad->buffer != NULL) {
1086 /* put buffer into array */
1087 mix->array_buffers->pdata[array_index] = vaggpad->buffer;
1091 GST_OBJECT_UNLOCK (mix);
1093 return mix_class->process_buffers (mix, mix->array_buffers, outbuf);
1098 static GstFlowReturn
1099 gst_gl_mixer_aggregate_frames (GstVideoAggregator * vagg, GstBuffer * outbuf)
1101 gboolean res = FALSE;
1102 GstGLMixer *mix = GST_GL_MIXER (vagg);
1103 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (vagg);
1105 if (mix_class->process_buffers)
1106 res = gst_gl_mixer_process_buffers (mix, outbuf);
1107 else if (mix_class->process_textures)
1108 res = gst_gl_mixer_process_textures (mix, outbuf);
1110 return res ? GST_FLOW_OK : GST_FLOW_ERROR;
1114 gst_gl_mixer_get_property (GObject * object,
1115 guint prop_id, GValue * value, GParamSpec * pspec)
1119 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1125 gst_gl_mixer_set_property (GObject * object,
1126 guint prop_id, const GValue * value, GParamSpec * pspec)
1130 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1136 _clean_upload (GstAggregator * agg, GstPad * aggpad, gpointer udata)
1138 GstGLMixerPad *pad = GST_GL_MIXER_PAD (aggpad);
1141 gst_object_unref (pad->upload);
1149 _free_glmixer_frame_data (GstGLMixerFrameData * frame)
1151 g_slice_free1 (sizeof (GstGLMixerFrameData), frame);
1155 gst_gl_mixer_start (GstAggregator * agg)
1158 GstGLMixer *mix = GST_GL_MIXER (agg);
1159 GstElement *element = GST_ELEMENT (agg);
1161 if (!GST_AGGREGATOR_CLASS (parent_class)->start (agg))
1164 GST_OBJECT_LOCK (mix);
1165 mix->array_buffers = g_ptr_array_new_full (element->numsinkpads,
1166 (GDestroyNotify) _free_glmixer_frame_data);
1167 mix->frames = g_ptr_array_new_full (element->numsinkpads, NULL);
1169 g_ptr_array_set_size (mix->array_buffers, element->numsinkpads);
1170 g_ptr_array_set_size (mix->frames, element->numsinkpads);
1172 for (i = 0; i < element->numsinkpads; i++)
1173 mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData);
1175 GST_OBJECT_UNLOCK (mix);
1181 gst_gl_mixer_stop (GstAggregator * agg)
1183 GstGLMixer *mix = GST_GL_MIXER (agg);
1184 GstGLMixerClass *mixer_class = GST_GL_MIXER_GET_CLASS (mix);
1186 if (!GST_AGGREGATOR_CLASS (parent_class)->stop (agg))
1189 GST_OBJECT_LOCK (agg);
1190 g_ptr_array_free (mix->frames, TRUE);
1192 g_ptr_array_free (mix->array_buffers, TRUE);
1193 mix->array_buffers = NULL;
1194 GST_OBJECT_UNLOCK (agg);
1196 if (mixer_class->reset)
1197 mixer_class->reset (mix);
1199 gst_gl_context_del_fbo (mix->context, mix->fbo, mix->depthbuffer);
1201 mix->depthbuffer = 0;
1203 if (mix->download) {
1204 gst_object_unref (mix->download);
1205 mix->download = NULL;
1208 gst_aggregator_iterate_sinkpads (GST_AGGREGATOR (mix), _clean_upload, NULL);
1210 if (mix->priv->query) {
1211 gst_query_unref (mix->priv->query);
1212 mix->priv->query = NULL;
1215 if (mix->priv->pool) {
1216 gst_object_unref (mix->priv->pool);
1217 mix->priv->pool = NULL;
1221 gst_object_unref (mix->display);
1222 mix->display = NULL;
1226 gst_object_unref (mix->context);
1227 mix->context = NULL;
1230 gst_gl_mixer_reset (mix);