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_pad_sink_getcaps (GstPad * pad, GstGLMixer * mix, GstCaps * filter)
294 GstCaps *template_caps;
295 GstCaps *filtered_caps;
296 GstCaps *returned_caps;
297 gboolean had_current_caps = TRUE;
299 template_caps = gst_pad_get_pad_template_caps (pad);
301 srccaps = gst_pad_get_current_caps (pad);
302 if (srccaps == NULL) {
303 had_current_caps = FALSE;
304 srccaps = template_caps;
307 filtered_caps = srccaps;
309 filtered_caps = gst_caps_intersect (srccaps, filter);
310 returned_caps = gst_caps_intersect (filtered_caps, template_caps);
312 gst_caps_unref (srccaps);
314 gst_caps_unref (filtered_caps);
315 if (had_current_caps)
316 gst_caps_unref (template_caps);
318 return returned_caps;
322 gst_gl_mixer_sink_query (GstAggregator * agg, GstAggregatorPad * bpad,
325 gboolean ret = FALSE;
326 GstGLMixer *mix = GST_GL_MIXER (agg);
328 GST_TRACE ("QUERY %" GST_PTR_FORMAT, query);
330 switch (GST_QUERY_TYPE (query)) {
333 GstCaps *filter, *caps;
335 gst_query_parse_caps (query, &filter);
336 caps = gst_gl_mixer_pad_sink_getcaps (GST_PAD (bpad), mix, filter);
337 gst_query_set_caps_result (query, caps);
338 gst_caps_unref (caps);
342 case GST_QUERY_ACCEPT_CAPS:
346 gst_query_parse_accept_caps (query, &caps);
347 ret = gst_gl_mixer_pad_sink_acceptcaps (GST_PAD (bpad), mix, caps);
348 gst_query_set_accept_caps_result (query, ret);
352 case GST_QUERY_ALLOCATION:
354 GstQuery *decide_query = NULL;
356 GST_OBJECT_LOCK (mix);
357 if (G_UNLIKELY (!mix->priv->negotiated)) {
358 GST_DEBUG_OBJECT (mix,
359 "not negotiated yet, can't answer ALLOCATION query");
360 GST_OBJECT_UNLOCK (mix);
363 if ((decide_query = mix->priv->query))
364 gst_query_ref (decide_query);
365 GST_OBJECT_UNLOCK (mix);
367 GST_DEBUG_OBJECT (mix,
368 "calling propose allocation with query %" GST_PTR_FORMAT,
371 /* pass the query to the propose_allocation vmethod if any */
372 ret = gst_gl_mixer_propose_allocation (mix, decide_query, query);
375 gst_query_unref (decide_query);
377 GST_DEBUG_OBJECT (mix, "ALLOCATION ret %d, %" GST_PTR_FORMAT, ret, query);
380 case GST_QUERY_CONTEXT:
382 ret = gst_gl_handle_context_query ((GstElement *) mix, query,
383 &mix->display, &mix->other_context);
387 ret = GST_AGGREGATOR_CLASS (parent_class)->sink_query (agg, bpad, query);
395 gst_gl_mixer_pad_init (GstGLMixerPad * mixerpad)
399 /* GLMixer signals and args */
411 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
414 GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
415 (GST_CAPS_FEATURE_MEMORY_GL_MEMORY,
417 GST_VIDEO_CAPS_MAKE_WITH_FEATURES
418 (GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META,
420 "; " GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS))
423 static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink_%u",
426 GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
427 (GST_CAPS_FEATURE_MEMORY_GL_MEMORY,
429 GST_VIDEO_CAPS_MAKE_WITH_FEATURES
430 (GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META,
432 "; " GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS))
435 static gboolean gst_gl_mixer_src_query (GstAggregator * agg, GstQuery * query);
437 gst_gl_mixer_get_output_buffer (GstVideoAggregator * videoaggregator,
438 GstBuffer ** outbuf);
440 gst_gl_mixer_src_activate_mode (GstAggregator * aggregator, GstPadMode mode,
442 static gboolean gst_gl_mixer_stop (GstAggregator * agg);
443 static gboolean gst_gl_mixer_start (GstAggregator * agg);
446 gst_gl_mixer_aggregate_frames (GstVideoAggregator * vagg,
447 GstBuffer * outbuffer);
449 static void gst_gl_mixer_set_property (GObject * object, guint prop_id,
450 const GValue * value, GParamSpec * pspec);
451 static void gst_gl_mixer_get_property (GObject * object, guint prop_id,
452 GValue * value, GParamSpec * pspec);
454 static gboolean gst_gl_mixer_decide_allocation (GstGLMixer * mix,
456 static gboolean gst_gl_mixer_set_allocation (GstGLMixer * mix,
457 GstBufferPool * pool, GstAllocator * allocator,
458 GstAllocationParams * params, GstQuery * query);
460 static void gst_gl_mixer_finalize (GObject * object);
463 gst_gl_mixer_class_init (GstGLMixerClass * klass)
465 GObjectClass *gobject_class;
466 GstElementClass *element_class;
468 GstVideoAggregatorClass *videoaggregator_class =
469 (GstVideoAggregatorClass *) klass;
470 GstAggregatorClass *agg_class = (GstAggregatorClass *) klass;
472 GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "glmixer", 0, "opengl mixer");
474 gobject_class = (GObjectClass *) klass;
475 element_class = GST_ELEMENT_CLASS (klass);
477 g_type_class_add_private (klass, sizeof (GstGLMixerPrivate));
479 gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_gl_mixer_finalize);
481 gobject_class->get_property = gst_gl_mixer_get_property;
482 gobject_class->set_property = gst_gl_mixer_set_property;
484 gst_element_class_add_pad_template (element_class,
485 gst_static_pad_template_get (&src_factory));
486 gst_element_class_add_pad_template (element_class,
487 gst_static_pad_template_get (&sink_factory));
489 element_class->set_context = GST_DEBUG_FUNCPTR (gst_gl_mixer_set_context);
491 agg_class->sinkpads_type = GST_TYPE_GL_MIXER_PAD;
492 agg_class->sink_query = gst_gl_mixer_sink_query;
493 agg_class->src_query = gst_gl_mixer_src_query;
494 agg_class->src_activate = gst_gl_mixer_src_activate_mode;
495 agg_class->stop = gst_gl_mixer_stop;
496 agg_class->start = gst_gl_mixer_start;
498 videoaggregator_class->disable_frame_conversion = TRUE;
499 videoaggregator_class->aggregate_frames = gst_gl_mixer_aggregate_frames;
500 videoaggregator_class->get_output_buffer = gst_gl_mixer_get_output_buffer;
501 videoaggregator_class->negotiated_caps = _negotiated_caps;
504 /* Register the pad class */
505 g_type_class_ref (GST_TYPE_GL_MIXER_PAD);
507 klass->set_caps = NULL;
512 gst_gl_mixer_reset (GstGLMixer * mix)
514 /* clean up collect data */
515 mix->priv->negotiated = FALSE;
519 gst_gl_mixer_init (GstGLMixer * mix)
521 mix->priv = GST_GL_MIXER_GET_PRIVATE (mix);
522 mix->array_buffers = 0;
525 mix->depthbuffer = 0;
527 mix->priv->gl_resource_ready = FALSE;
528 g_mutex_init (&mix->priv->gl_resource_lock);
529 g_cond_init (&mix->priv->gl_resource_cond);
530 /* initialize variables */
531 gst_gl_mixer_reset (mix);
535 gst_gl_mixer_finalize (GObject * object)
537 GstGLMixer *mix = GST_GL_MIXER (object);
538 GstGLMixerPrivate *priv = mix->priv;
540 if (mix->other_context) {
541 gst_object_unref (mix->other_context);
542 mix->other_context = NULL;
545 g_mutex_clear (&priv->gl_resource_lock);
546 g_cond_clear (&priv->gl_resource_cond);
547 G_OBJECT_CLASS (parent_class)->finalize (object);
551 gst_gl_mixer_set_context (GstElement * element, GstContext * context)
553 GstGLMixer *mix = GST_GL_MIXER (element);
555 gst_gl_handle_set_context (element, context, &mix->display, &mix->context);
559 gst_gl_mixer_activate (GstGLMixer * mix, gboolean active)
561 gboolean result = TRUE;
564 if (!gst_gl_ensure_element_data (mix, &mix->display, &mix->other_context))
572 gst_gl_mixer_src_activate_mode (GstAggregator * aggregator, GstPadMode mode,
576 gboolean result = FALSE;
578 mix = GST_GL_MIXER (aggregator);
581 case GST_PAD_MODE_PUSH:
582 case GST_PAD_MODE_PULL:
583 result = gst_gl_mixer_activate (mix, active);
593 gst_gl_mixer_query_caps (GstPad * pad, GstAggregator * agg, GstQuery * query)
595 GstCaps *filter, *caps;
599 GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg);
601 gst_query_parse_caps (query, &filter);
603 if (GST_VIDEO_INFO_FORMAT (&vagg->info) != GST_VIDEO_FORMAT_UNKNOWN) {
604 caps = gst_video_info_to_caps (&vagg->info);
606 caps = gst_pad_get_pad_template_caps (agg->srcpad);
609 caps = gst_caps_make_writable (caps);
611 n = gst_caps_get_size (caps) - 1;
612 for (; n >= 0; n--) {
613 s = gst_caps_get_structure (caps, n);
614 gst_structure_set (s, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
615 "height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
616 if (GST_VIDEO_INFO_FPS_D (&vagg->info) != 0) {
617 gst_structure_set (s,
618 "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
623 caps = gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
625 gst_query_set_caps_result (query, caps);
626 gst_caps_unref (caps);
632 gst_gl_mixer_set_caps_features (const GstCaps * caps,
633 const gchar * feature_name)
635 GstCaps *tmp = gst_caps_copy (caps);
636 guint n = gst_caps_get_size (tmp);
639 for (i = 0; i < n; i++) {
640 GstCapsFeatures *features = gst_caps_get_features (tmp, i);
642 guint n_f = gst_caps_features_get_size (features);
644 for (j = 0; j < n_f; j++) {
645 gst_caps_features_remove_id (features,
646 gst_caps_features_get_nth_id (features, j));
650 gst_caps_features_add (features, feature_name);
651 gst_caps_set_simple (tmp, "format", G_TYPE_STRING, "RGBA", NULL);
657 /* copies the given caps */
659 gst_gl_mixer_caps_remove_format_info (GstCaps * caps)
666 res = gst_caps_new_empty ();
668 n = gst_caps_get_size (caps);
669 for (i = 0; i < n; i++) {
670 st = gst_caps_get_structure (caps, i);
671 f = gst_caps_get_features (caps, i);
673 /* If this is already expressed by the existing caps
674 * skip this structure */
675 if (i > 0 && gst_caps_is_subset_structure_full (res, st, f))
678 st = gst_structure_copy (st);
679 /* Only remove format info for the cases when we can actually convert */
680 if (!gst_caps_features_is_any (f)
681 && gst_caps_features_is_equal (f,
682 GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY))
683 gst_structure_remove_fields (st, "format", "colorimetry", "chroma-site",
684 "width", "height", NULL);
686 gst_caps_append_structure_full (res, st, gst_caps_features_copy (f));
693 gst_gl_mixer_update_caps (GstGLMixer * mix, GstCaps * caps)
695 GstCaps *result = NULL;
696 GstCaps *glcaps = gst_gl_mixer_set_caps_features (caps,
697 GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
698 #if GST_GL_HAVE_PLATFORM_EGL
699 GstCaps *eglcaps = gst_gl_mixer_set_caps_features (caps,
700 GST_CAPS_FEATURE_MEMORY_EGL_IMAGE);
702 GstCaps *uploadcaps = gst_gl_mixer_set_caps_features (caps,
703 GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META);
705 gst_caps_from_string (GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS));
707 result = gst_caps_new_empty ();
709 result = gst_caps_merge (result, glcaps);
710 #if GST_GL_HAVE_PLATFORM_EGL
711 result = gst_caps_merge (result, eglcaps);
713 result = gst_caps_merge (result, uploadcaps);
714 result = gst_caps_merge (result, raw_caps);
716 result = gst_caps_merge (result, gst_gl_mixer_caps_remove_format_info (caps));
718 GST_DEBUG_OBJECT (mix, "returning %" GST_PTR_FORMAT, result);
724 gst_gl_mixer_src_query (GstAggregator * agg, GstQuery * query)
726 gboolean res = FALSE;
727 GstGLMixer *mix = GST_GL_MIXER (agg);
729 switch (GST_QUERY_TYPE (query)) {
730 case GST_QUERY_CONTEXT:
732 res = gst_gl_handle_context_query ((GstElement *) mix, query,
733 &mix->display, &mix->other_context);
737 res = gst_gl_mixer_query_caps (agg->srcpad, agg, query);
740 res = GST_AGGREGATOR_CLASS (parent_class)->src_query (agg, query);
748 gst_gl_mixer_get_output_buffer (GstVideoAggregator * videoaggregator,
751 GstGLMixer *mix = GST_GL_MIXER (videoaggregator);
753 if (!mix->priv->pool_active) {
754 if (!gst_buffer_pool_set_active (mix->priv->pool, TRUE)) {
755 GST_ELEMENT_ERROR (mix, RESOURCE, SETTINGS,
756 ("failed to activate bufferpool"), ("failed to activate bufferpool"));
757 return GST_FLOW_ERROR;
759 mix->priv->pool_active = TRUE;
762 return gst_buffer_pool_acquire_buffer (mix->priv->pool, outbuf, NULL);
766 gst_gl_mixer_decide_allocation (GstGLMixer * mix, GstQuery * query)
768 GstGLMixerClass *mixer_class = GST_GL_MIXER_GET_CLASS (mix);
769 GstBufferPool *pool = NULL;
770 GstStructure *config;
772 guint min, max, size;
773 gboolean update_pool;
774 GError *error = NULL;
776 guint out_width, out_height;
777 GstGLContext *other_context = NULL;
778 GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mix);
780 if (!gst_gl_ensure_element_data (mix, &mix->display, &mix->other_context))
783 if (gst_query_find_allocation_meta (query,
784 GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, &idx)) {
785 GstGLContext *context;
786 const GstStructure *upload_meta_params;
791 gst_query_parse_nth_allocation_meta (query, idx, &upload_meta_params);
792 if (upload_meta_params) {
793 if (gst_structure_get (upload_meta_params, "gst.gl.GstGLContext",
794 GST_GL_TYPE_CONTEXT, &context, NULL) && context) {
795 GstGLContext *old = mix->context;
797 mix->context = context;
799 gst_object_unref (old);
800 } else if (gst_structure_get (upload_meta_params, "gst.gl.context.handle",
801 G_TYPE_POINTER, &handle, "gst.gl.context.type", G_TYPE_STRING,
802 &type, "gst.gl.context.apis", G_TYPE_STRING, &apis, NULL)
804 GstGLPlatform platform;
807 GST_DEBUG ("got GL context handle 0x%p with type %s and apis %s",
810 platform = gst_gl_platform_from_string (type);
811 gl_apis = gst_gl_api_from_string (apis);
813 if (gl_apis && platform)
815 gst_gl_context_new_wrapped (mix->display, (guintptr) handle,
821 if (mix->other_context) {
822 if (!other_context) {
823 other_context = mix->other_context;
825 GST_ELEMENT_WARNING (mix, LIBRARY, SETTINGS,
826 ("%s", "Cannot share with more than one GL context"),
827 ("%s", "Cannot share with more than one GL context"));
832 mix->context = gst_gl_context_new (mix->display);
833 if (!gst_gl_context_create (mix->context, other_context, &error))
837 out_width = GST_VIDEO_INFO_WIDTH (&vagg->info);
838 out_height = GST_VIDEO_INFO_HEIGHT (&vagg->info);
840 g_mutex_lock (&mix->priv->gl_resource_lock);
841 mix->priv->gl_resource_ready = FALSE;
843 gst_gl_context_del_fbo (mix->context, mix->fbo, mix->depthbuffer);
845 mix->depthbuffer = 0;
848 if (!gst_gl_context_gen_fbo (mix->context, out_width, out_height,
849 &mix->fbo, &mix->depthbuffer)) {
850 g_cond_signal (&mix->priv->gl_resource_cond);
851 g_mutex_unlock (&mix->priv->gl_resource_lock);
856 gst_gl_context_del_texture (mix->context, &mix->out_tex_id);
857 gst_gl_context_gen_texture (mix->context, &mix->out_tex_id,
858 GST_VIDEO_FORMAT_RGBA, out_width, out_height);
860 gst_query_parse_allocation (query, &caps, NULL);
862 if (mixer_class->set_caps)
863 mixer_class->set_caps (mix, caps);
865 mix->priv->gl_resource_ready = TRUE;
866 g_cond_signal (&mix->priv->gl_resource_cond);
867 g_mutex_unlock (&mix->priv->gl_resource_lock);
869 if (gst_query_get_n_allocation_pools (query) > 0) {
870 gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
876 gst_video_info_init (&vinfo);
877 gst_video_info_from_caps (&vinfo, caps);
884 pool = gst_gl_buffer_pool_new (mix->context);
886 config = gst_buffer_pool_get_config (pool);
887 gst_buffer_pool_config_set_params (config, caps, size, min, max);
889 gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
890 gst_buffer_pool_config_add_option (config,
891 GST_BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META);
893 gst_buffer_pool_set_config (pool, config);
896 gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
898 gst_query_add_allocation_pool (query, pool, size, min, max);
900 gst_object_unref (pool);
906 GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s", error->message),
912 /* takes ownership of the pool, allocator and query */
914 gst_gl_mixer_set_allocation (GstGLMixer * mix,
915 GstBufferPool * pool, GstAllocator * allocator,
916 GstAllocationParams * params, GstQuery * query)
918 GstAllocator *oldalloc;
919 GstBufferPool *oldpool;
921 GstGLMixerPrivate *priv = mix->priv;
923 GST_DEBUG ("storing allocation query");
925 GST_OBJECT_LOCK (mix);
926 oldpool = priv->pool;
928 priv->pool_active = FALSE;
930 oldalloc = priv->allocator;
931 priv->allocator = allocator;
933 oldquery = priv->query;
937 priv->params = *params;
939 gst_allocation_params_init (&priv->params);
940 GST_OBJECT_UNLOCK (mix);
943 GST_DEBUG_OBJECT (mix, "deactivating old pool %p", oldpool);
944 gst_buffer_pool_set_active (oldpool, FALSE);
945 gst_object_unref (oldpool);
948 gst_object_unref (oldalloc);
951 gst_query_unref (oldquery);
957 gst_gl_mixer_do_bufferpool (GstGLMixer * mix, GstCaps * outcaps)
960 gboolean result = TRUE;
961 GstBufferPool *pool = NULL;
962 GstAllocator *allocator;
963 GstAllocationParams params;
964 GstAggregator *agg = GST_AGGREGATOR (mix);
966 /* find a pool for the negotiated caps now */
967 GST_DEBUG_OBJECT (mix, "doing allocation query");
968 query = gst_query_new_allocation (outcaps, TRUE);
969 if (!gst_pad_peer_query (agg->srcpad, query)) {
970 /* not a problem, just debug a little */
971 GST_DEBUG_OBJECT (mix, "peer ALLOCATION query failed");
974 GST_DEBUG_OBJECT (mix, "calling decide_allocation");
975 result = gst_gl_mixer_decide_allocation (mix, query);
977 GST_DEBUG_OBJECT (mix, "ALLOCATION (%d) params: %" GST_PTR_FORMAT, result,
981 goto no_decide_allocation;
983 /* we got configuration from our peer or the decide_allocation method,
985 if (gst_query_get_n_allocation_params (query) > 0) {
986 gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
989 gst_allocation_params_init (¶ms);
992 if (gst_query_get_n_allocation_pools (query) > 0)
993 gst_query_parse_nth_allocation_pool (query, 0, &pool, NULL, NULL, NULL);
996 result = gst_gl_mixer_set_allocation (mix, pool, allocator, ¶ms, query);
1001 no_decide_allocation:
1003 GST_WARNING_OBJECT (mix, "Failed to decide allocation");
1004 gst_query_unref (query);
1011 gst_gl_mixer_process_textures (GstGLMixer * mix, GstBuffer * outbuf)
1016 gboolean res = TRUE;
1017 guint array_index = 0;
1018 GstVideoFrame out_frame;
1019 GstElement *element = GST_ELEMENT (mix);
1020 GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mix);
1021 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
1022 GstGLMixerPrivate *priv = mix->priv;
1023 gboolean to_download =
1024 gst_caps_features_is_equal (GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY,
1025 gst_caps_get_features (mix->out_caps, 0));
1026 GstMapFlags out_map_flags = GST_MAP_WRITE;
1028 GST_TRACE ("Processing buffers");
1030 to_download |= !gst_is_gl_memory (gst_buffer_peek_memory (outbuf, 0));
1033 out_map_flags |= GST_MAP_GL;
1035 if (!gst_video_frame_map (&out_frame, &vagg->info, outbuf, out_map_flags)) {
1040 out_tex = *(guint *) out_frame.data[0];
1042 GST_INFO ("Output Buffer does not contain correct memory, "
1043 "attempting to wrap for download");
1046 mix->download = gst_gl_download_new (mix->context);
1048 gst_gl_download_set_format (mix->download, &out_frame.info);
1049 out_tex = mix->out_tex_id;
1052 GST_OBJECT_LOCK (mix);
1053 walk = element->sinkpads;
1055 i = mix->frames->len;
1056 g_ptr_array_set_size (mix->frames, element->numsinkpads);
1057 for (; i < element->numsinkpads; i++)
1058 mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData);
1060 GstGLMixerPad *pad = GST_GL_MIXER_PAD (walk->data);
1061 GstVideoAggregatorPad *vaggpad = walk->data;
1062 GstGLMixerFrameData *frame;
1064 frame = g_ptr_array_index (mix->frames, array_index);
1068 walk = g_list_next (walk);
1070 if (vaggpad->buffer != NULL) {
1074 pad->upload = gst_gl_upload_new (mix->context);
1076 gst_gl_upload_set_format (pad->upload, &vaggpad->info);
1079 if (!gst_gl_upload_perform_with_buffer (pad->upload,
1080 vaggpad->buffer, &in_tex, NULL)) {
1082 pad->mapped = FALSE;
1087 frame->texture = in_tex;
1092 g_mutex_lock (&priv->gl_resource_lock);
1093 if (!priv->gl_resource_ready)
1094 g_cond_wait (&priv->gl_resource_cond, &priv->gl_resource_lock);
1096 if (!priv->gl_resource_ready) {
1097 g_mutex_unlock (&priv->gl_resource_lock);
1098 GST_ERROR_OBJECT (mix,
1099 "fbo used to render can't be created, do not run process_textures");
1104 mix_class->process_textures (mix, mix->frames, out_tex);
1106 g_mutex_unlock (&priv->gl_resource_lock);
1109 if (!gst_gl_download_perform_with_data (mix->download, out_tex,
1111 GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s",
1112 "Failed to download video frame"), (NULL));
1120 walk = GST_ELEMENT (mix)->sinkpads;
1122 GstGLMixerPad *pad = GST_GL_MIXER_PAD (walk->data);
1125 gst_gl_upload_release_buffer (pad->upload);
1127 pad->mapped = FALSE;
1128 walk = g_list_next (walk);
1131 GST_OBJECT_UNLOCK (mix);
1133 gst_video_frame_unmap (&out_frame);
1139 gst_gl_mixer_process_buffers (GstGLMixer * mix, GstBuffer * outbuf)
1142 guint i, array_index = 0;
1143 GstElement *element = GST_ELEMENT (mix);
1144 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
1146 GST_OBJECT_LOCK (mix);
1147 walk = GST_ELEMENT (mix)->sinkpads;
1148 i = mix->frames->len;
1149 g_ptr_array_set_size (mix->frames, element->numsinkpads);
1150 for (; i < element->numsinkpads; i++)
1151 mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData);
1152 while (walk) { /* We walk with this list because it's ordered */
1153 GstVideoAggregatorPad *vaggpad = walk->data;
1155 walk = g_list_next (walk);
1157 if (vaggpad->buffer != NULL) {
1158 /* put buffer into array */
1159 mix->array_buffers->pdata[array_index] = vaggpad->buffer;
1163 GST_OBJECT_UNLOCK (mix);
1165 return mix_class->process_buffers (mix, mix->array_buffers, outbuf);
1170 static GstFlowReturn
1171 gst_gl_mixer_aggregate_frames (GstVideoAggregator * vagg, GstBuffer * outbuf)
1173 gboolean res = FALSE;
1174 GstGLMixer *mix = GST_GL_MIXER (vagg);
1175 GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (vagg);
1177 if (mix_class->process_buffers)
1178 res = gst_gl_mixer_process_buffers (mix, outbuf);
1179 else if (mix_class->process_textures)
1180 res = gst_gl_mixer_process_textures (mix, outbuf);
1182 return res ? GST_FLOW_OK : GST_FLOW_ERROR;
1186 gst_gl_mixer_get_property (GObject * object,
1187 guint prop_id, GValue * value, GParamSpec * pspec)
1191 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1197 gst_gl_mixer_set_property (GObject * object,
1198 guint prop_id, const GValue * value, GParamSpec * pspec)
1202 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1208 _clean_upload (GstAggregator * agg, GstPad * aggpad, gpointer udata)
1210 GstGLMixerPad *pad = GST_GL_MIXER_PAD (aggpad);
1213 gst_object_unref (pad->upload);
1221 _free_glmixer_frame_data (GstGLMixerFrameData * frame)
1223 g_slice_free1 (sizeof (GstGLMixerFrameData), frame);
1227 gst_gl_mixer_start (GstAggregator * agg)
1230 GstGLMixer *mix = GST_GL_MIXER (agg);
1231 GstElement *element = GST_ELEMENT (agg);
1233 if (!GST_AGGREGATOR_CLASS (parent_class)->start (agg))
1236 GST_OBJECT_LOCK (mix);
1237 mix->array_buffers = g_ptr_array_new_full (element->numsinkpads,
1238 (GDestroyNotify) _free_glmixer_frame_data);
1239 mix->frames = g_ptr_array_new_full (element->numsinkpads, NULL);
1241 g_ptr_array_set_size (mix->array_buffers, element->numsinkpads);
1242 g_ptr_array_set_size (mix->frames, element->numsinkpads);
1244 for (i = 0; i < element->numsinkpads; i++)
1245 mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData);
1247 GST_OBJECT_UNLOCK (mix);
1253 gst_gl_mixer_stop (GstAggregator * agg)
1255 GstGLMixer *mix = GST_GL_MIXER (agg);
1256 GstGLMixerClass *mixer_class = GST_GL_MIXER_GET_CLASS (mix);
1258 if (!GST_AGGREGATOR_CLASS (parent_class)->stop (agg))
1261 GST_OBJECT_LOCK (agg);
1262 g_ptr_array_free (mix->frames, TRUE);
1264 g_ptr_array_free (mix->array_buffers, TRUE);
1265 mix->array_buffers = NULL;
1266 GST_OBJECT_UNLOCK (agg);
1268 if (mixer_class->reset)
1269 mixer_class->reset (mix);
1271 gst_gl_context_del_fbo (mix->context, mix->fbo, mix->depthbuffer);
1273 mix->depthbuffer = 0;
1275 if (mix->download) {
1276 gst_object_unref (mix->download);
1277 mix->download = NULL;
1280 gst_aggregator_iterate_sinkpads (GST_AGGREGATOR (mix), _clean_upload, NULL);
1282 if (mix->priv->query) {
1283 gst_query_unref (mix->priv->query);
1284 mix->priv->query = NULL;
1287 if (mix->priv->pool) {
1288 gst_object_unref (mix->priv->pool);
1289 mix->priv->pool = NULL;
1293 gst_object_unref (mix->display);
1294 mix->display = NULL;
1298 gst_object_unref (mix->context);
1299 mix->context = NULL;
1302 gst_gl_mixer_reset (mix);