/* Generic video mixer plugin * * GStreamer * Copyright (C) 2009 Julien Isorce * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #ifdef HAVE_STDLIB_H #include #endif #ifdef HAVE_STRING_H #include #endif #include "gstglmixer.h" #if GST_GL_HAVE_PLATFORM_EGL #include #endif #define gst_gl_mixer_parent_class parent_class G_DEFINE_ABSTRACT_TYPE (GstGLMixer, gst_gl_mixer, GST_TYPE_VIDEO_AGGREGATOR); static gboolean gst_gl_mixer_do_bufferpool (GstGLMixer * mix, GstCaps * outcaps); #define GST_CAT_DEFAULT gst_gl_mixer_debug GST_DEBUG_CATEGORY (gst_gl_mixer_debug); static void gst_gl_mixer_pad_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static void gst_gl_mixer_pad_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_gl_mixer_pad_finalize (GObject * object); static void gst_gl_mixer_set_context (GstElement * element, GstContext * context); enum { PROP_PAD_0 }; #define GST_GL_MIXER_GET_PRIVATE(obj) \ (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GST_TYPE_GL_MIXER, GstGLMixerPrivate)) struct _GstGLMixerPrivate { gboolean negotiated; GstBufferPool *pool; gboolean pool_active; GstAllocator *allocator; GstAllocationParams params; GstQuery *query; gboolean gl_resource_ready; GMutex gl_resource_lock; GCond gl_resource_cond; }; G_DEFINE_TYPE (GstGLMixerPad, gst_gl_mixer_pad, GST_TYPE_VIDEO_AGGREGATOR_PAD); static void gst_gl_mixer_pad_class_init (GstGLMixerPadClass * klass) { GObjectClass *gobject_class = (GObjectClass *) klass; gobject_class->set_property = gst_gl_mixer_pad_set_property; gobject_class->get_property = gst_gl_mixer_pad_get_property; gobject_class->finalize = gst_gl_mixer_pad_finalize; } static void gst_gl_mixer_pad_finalize (GObject * object) { GstGLMixerPad *pad = GST_GL_MIXER_PAD (object); if (pad->upload) { gst_object_unref (pad->upload); pad->upload = NULL; } G_OBJECT_CLASS (gst_gl_mixer_pad_parent_class)->finalize (object); } static void gst_gl_mixer_pad_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { switch (prop_id) { default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_gl_mixer_pad_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { switch (prop_id) { default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static gboolean _negotiated_caps (GstVideoAggregator * vagg, GstCaps * caps) { GstGLMixer *mix = GST_GL_MIXER (vagg); gboolean ret = gst_gl_mixer_do_bufferpool (mix, caps); mix->priv->negotiated = ret; gst_caps_replace (&mix->out_caps, caps); return ret; } static gboolean gst_gl_mixer_propose_allocation (GstGLMixer * mix, GstQuery * decide_query, GstQuery * query) { GstBufferPool *pool; GstStructure *config; GstCaps *caps; guint size = 0; gboolean need_pool; GError *error = NULL; GstStructure *gl_context; gchar *platform, *gl_apis; gpointer handle; GstAllocator *allocator = NULL; GstAllocationParams params; gst_query_parse_allocation (query, &caps, &need_pool); if (caps == NULL) goto no_caps; if ((pool = mix->priv->pool)) gst_object_ref (pool); if (pool != NULL) { GstCaps *pcaps; /* we had a pool, check caps */ GST_DEBUG_OBJECT (mix, "check existing pool caps"); config = gst_buffer_pool_get_config (pool); gst_buffer_pool_config_get_params (config, &pcaps, &size, NULL, NULL); if (!gst_caps_is_equal (caps, pcaps)) { GST_DEBUG_OBJECT (mix, "pool has different caps"); /* different caps, we can't use this pool */ gst_object_unref (pool); pool = NULL; } gst_structure_free (config); } if (!gst_gl_ensure_element_data (mix, &mix->display, &mix->other_context)) return FALSE; if (!mix->context) { mix->context = gst_gl_context_new (mix->display); if (!gst_gl_context_create (mix->context, mix->other_context, &error)) goto context_error; } if (pool == NULL && need_pool) { GstVideoInfo info; if (!gst_video_info_from_caps (&info, caps)) goto invalid_caps; GST_DEBUG_OBJECT (mix, "create new pool"); pool = gst_gl_buffer_pool_new (mix->context); /* the normal size of a frame */ size = info.size; config = gst_buffer_pool_get_config (pool); gst_buffer_pool_config_set_params (config, caps, size, 0, 0); if (!gst_buffer_pool_set_config (pool, config)) goto config_failed; } if (pool) { gst_query_add_allocation_pool (query, pool, size, 1, 0); gst_object_unref (pool); } /* we also support various metadata */ gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, 0); gl_apis = gst_gl_api_to_string (gst_gl_context_get_gl_api (mix->context)); platform = gst_gl_platform_to_string (gst_gl_context_get_gl_platform (mix->context)); handle = (gpointer) gst_gl_context_get_gl_context (mix->context); gl_context = gst_structure_new ("GstVideoGLTextureUploadMeta", "gst.gl.GstGLContext", GST_GL_TYPE_CONTEXT, mix->context, "gst.gl.context.handle", G_TYPE_POINTER, handle, "gst.gl.context.type", G_TYPE_STRING, platform, "gst.gl.context.apis", G_TYPE_STRING, gl_apis, NULL); gst_query_add_allocation_meta (query, GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, gl_context); g_free (gl_apis); g_free (platform); gst_structure_free (gl_context); gst_allocation_params_init (¶ms); allocator = gst_allocator_find (GST_GL_MEMORY_ALLOCATOR); gst_query_add_allocation_param (query, allocator, ¶ms); gst_object_unref (allocator); return TRUE; /* ERRORS */ no_caps: { GST_DEBUG_OBJECT (mix, "no caps specified"); return FALSE; } invalid_caps: { GST_DEBUG_OBJECT (mix, "invalid caps specified"); return FALSE; } config_failed: { GST_DEBUG_OBJECT (mix, "failed setting config"); return FALSE; } context_error: { GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s", error->message), (NULL)); return FALSE; } } static gboolean gst_gl_mixer_pad_sink_acceptcaps (GstPad * pad, GstGLMixer * mix, GstCaps * caps) { gboolean ret; GstCaps *template_caps; GST_DEBUG_OBJECT (pad, "try accept caps of %" GST_PTR_FORMAT, caps); template_caps = gst_pad_get_pad_template_caps (pad); template_caps = gst_caps_make_writable (template_caps); ret = gst_caps_can_intersect (caps, template_caps); GST_DEBUG_OBJECT (pad, "%saccepted caps %" GST_PTR_FORMAT, (ret ? "" : "not "), caps); gst_caps_unref (template_caps); return ret; } static GstCaps * gst_gl_mixer_pad_sink_getcaps (GstPad * pad, GstGLMixer * mix, GstCaps * filter) { GstCaps *srccaps; GstCaps *template_caps; GstCaps *filtered_caps; GstCaps *returned_caps; gboolean had_current_caps = TRUE; template_caps = gst_pad_get_pad_template_caps (pad); srccaps = gst_pad_get_current_caps (pad); if (srccaps == NULL) { had_current_caps = FALSE; srccaps = template_caps; } filtered_caps = srccaps; if (filter) filtered_caps = gst_caps_intersect (srccaps, filter); returned_caps = gst_caps_intersect (filtered_caps, template_caps); gst_caps_unref (srccaps); if (filter) gst_caps_unref (filtered_caps); if (had_current_caps) gst_caps_unref (template_caps); return returned_caps; } static gboolean gst_gl_mixer_sink_query (GstAggregator * agg, GstAggregatorPad * bpad, GstQuery * query) { gboolean ret = FALSE; GstGLMixer *mix = GST_GL_MIXER (agg); GST_TRACE ("QUERY %" GST_PTR_FORMAT, query); switch (GST_QUERY_TYPE (query)) { case GST_QUERY_CAPS: { GstCaps *filter, *caps; gst_query_parse_caps (query, &filter); caps = gst_gl_mixer_pad_sink_getcaps (GST_PAD (bpad), mix, filter); gst_query_set_caps_result (query, caps); gst_caps_unref (caps); ret = TRUE; break; } case GST_QUERY_ACCEPT_CAPS: { GstCaps *caps; gst_query_parse_accept_caps (query, &caps); ret = gst_gl_mixer_pad_sink_acceptcaps (GST_PAD (bpad), mix, caps); gst_query_set_accept_caps_result (query, ret); ret = TRUE; break; } case GST_QUERY_ALLOCATION: { GstQuery *decide_query = NULL; GST_OBJECT_LOCK (mix); if (G_UNLIKELY (!mix->priv->negotiated)) { GST_DEBUG_OBJECT (mix, "not negotiated yet, can't answer ALLOCATION query"); GST_OBJECT_UNLOCK (mix); return FALSE; } if ((decide_query = mix->priv->query)) gst_query_ref (decide_query); GST_OBJECT_UNLOCK (mix); GST_DEBUG_OBJECT (mix, "calling propose allocation with query %" GST_PTR_FORMAT, decide_query); /* pass the query to the propose_allocation vmethod if any */ ret = gst_gl_mixer_propose_allocation (mix, decide_query, query); if (decide_query) gst_query_unref (decide_query); GST_DEBUG_OBJECT (mix, "ALLOCATION ret %d, %" GST_PTR_FORMAT, ret, query); break; } case GST_QUERY_CONTEXT: { ret = gst_gl_handle_context_query ((GstElement *) mix, query, &mix->display, &mix->other_context); break; } default: ret = GST_AGGREGATOR_CLASS (parent_class)->sink_query (agg, bpad, query); break; } return ret; } static void gst_gl_mixer_pad_init (GstGLMixerPad * mixerpad) { } /* GLMixer signals and args */ enum { /* FILL ME */ LAST_SIGNAL }; enum { PROP_0 }; static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES (GST_CAPS_FEATURE_MEMORY_GL_MEMORY, "RGBA") "; " GST_VIDEO_CAPS_MAKE_WITH_FEATURES (GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META, "RGBA") "; " GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS)) ); static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink_%u", GST_PAD_SINK, GST_PAD_REQUEST, GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES (GST_CAPS_FEATURE_MEMORY_GL_MEMORY, "RGBA") "; " GST_VIDEO_CAPS_MAKE_WITH_FEATURES (GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META, "RGBA") "; " GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS)) ); static gboolean gst_gl_mixer_src_query (GstAggregator * agg, GstQuery * query); static GstFlowReturn gst_gl_mixer_get_output_buffer (GstVideoAggregator * videoaggregator, GstBuffer ** outbuf); static gboolean gst_gl_mixer_src_activate_mode (GstAggregator * aggregator, GstPadMode mode, gboolean active); static gboolean gst_gl_mixer_stop (GstAggregator * agg); static gboolean gst_gl_mixer_start (GstAggregator * agg); static GstFlowReturn gst_gl_mixer_aggregate_frames (GstVideoAggregator * vagg, GstBuffer * outbuffer); static void gst_gl_mixer_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_gl_mixer_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static gboolean gst_gl_mixer_decide_allocation (GstGLMixer * mix, GstQuery * query); static gboolean gst_gl_mixer_set_allocation (GstGLMixer * mix, GstBufferPool * pool, GstAllocator * allocator, GstAllocationParams * params, GstQuery * query); static void gst_gl_mixer_finalize (GObject * object); static void gst_gl_mixer_class_init (GstGLMixerClass * klass) { GObjectClass *gobject_class; GstElementClass *element_class; GstVideoAggregatorClass *videoaggregator_class = (GstVideoAggregatorClass *) klass; GstAggregatorClass *agg_class = (GstAggregatorClass *) klass; GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "glmixer", 0, "opengl mixer"); gobject_class = (GObjectClass *) klass; element_class = GST_ELEMENT_CLASS (klass); g_type_class_add_private (klass, sizeof (GstGLMixerPrivate)); gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_gl_mixer_finalize); gobject_class->get_property = gst_gl_mixer_get_property; gobject_class->set_property = gst_gl_mixer_set_property; gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&src_factory)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&sink_factory)); element_class->set_context = GST_DEBUG_FUNCPTR (gst_gl_mixer_set_context); agg_class->sinkpads_type = GST_TYPE_GL_MIXER_PAD; agg_class->sink_query = gst_gl_mixer_sink_query; agg_class->src_query = gst_gl_mixer_src_query; agg_class->src_activate = gst_gl_mixer_src_activate_mode; agg_class->stop = gst_gl_mixer_stop; agg_class->start = gst_gl_mixer_start; videoaggregator_class->disable_frame_conversion = TRUE; videoaggregator_class->aggregate_frames = gst_gl_mixer_aggregate_frames; videoaggregator_class->get_output_buffer = gst_gl_mixer_get_output_buffer; videoaggregator_class->negotiated_caps = _negotiated_caps; /* Register the pad class */ g_type_class_ref (GST_TYPE_GL_MIXER_PAD); klass->set_caps = NULL; } static void gst_gl_mixer_reset (GstGLMixer * mix) { /* clean up collect data */ mix->priv->negotiated = FALSE; } static void gst_gl_mixer_init (GstGLMixer * mix) { mix->priv = GST_GL_MIXER_GET_PRIVATE (mix); mix->array_buffers = 0; mix->display = NULL; mix->fbo = 0; mix->depthbuffer = 0; mix->priv->gl_resource_ready = FALSE; g_mutex_init (&mix->priv->gl_resource_lock); g_cond_init (&mix->priv->gl_resource_cond); /* initialize variables */ gst_gl_mixer_reset (mix); } static void gst_gl_mixer_finalize (GObject * object) { GstGLMixer *mix = GST_GL_MIXER (object); GstGLMixerPrivate *priv = mix->priv; if (mix->other_context) { gst_object_unref (mix->other_context); mix->other_context = NULL; } g_mutex_clear (&priv->gl_resource_lock); g_cond_clear (&priv->gl_resource_cond); G_OBJECT_CLASS (parent_class)->finalize (object); } static void gst_gl_mixer_set_context (GstElement * element, GstContext * context) { GstGLMixer *mix = GST_GL_MIXER (element); gst_gl_handle_set_context (element, context, &mix->display, &mix->context); } static gboolean gst_gl_mixer_activate (GstGLMixer * mix, gboolean active) { gboolean result = TRUE; if (active) { if (!gst_gl_ensure_element_data (mix, &mix->display, &mix->other_context)) result = FALSE; } return result; } static gboolean gst_gl_mixer_src_activate_mode (GstAggregator * aggregator, GstPadMode mode, gboolean active) { GstGLMixer *mix; gboolean result = FALSE; mix = GST_GL_MIXER (aggregator); switch (mode) { case GST_PAD_MODE_PUSH: case GST_PAD_MODE_PULL: result = gst_gl_mixer_activate (mix, active); break; default: result = TRUE; break; } return result; } static gboolean gst_gl_mixer_query_caps (GstPad * pad, GstAggregator * agg, GstQuery * query) { GstCaps *filter, *caps; GstStructure *s; gint n; GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg); gst_query_parse_caps (query, &filter); if (GST_VIDEO_INFO_FORMAT (&vagg->info) != GST_VIDEO_FORMAT_UNKNOWN) { caps = gst_video_info_to_caps (&vagg->info); } else { caps = gst_pad_get_pad_template_caps (agg->srcpad); } caps = gst_caps_make_writable (caps); n = gst_caps_get_size (caps) - 1; for (; n >= 0; n--) { s = gst_caps_get_structure (caps, n); gst_structure_set (s, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT, "height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL); if (GST_VIDEO_INFO_FPS_D (&vagg->info) != 0) { gst_structure_set (s, "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL); } } if (filter) caps = gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST); gst_query_set_caps_result (query, caps); gst_caps_unref (caps); return TRUE; } static GstCaps * gst_gl_mixer_set_caps_features (const GstCaps * caps, const gchar * feature_name) { GstCaps *tmp = gst_caps_copy (caps); guint n = gst_caps_get_size (tmp); guint i = 0; for (i = 0; i < n; i++) { GstCapsFeatures *features = gst_caps_get_features (tmp, i); if (features) { guint n_f = gst_caps_features_get_size (features); guint j = 0; for (j = 0; j < n_f; j++) { gst_caps_features_remove_id (features, gst_caps_features_get_nth_id (features, j)); } } gst_caps_features_add (features, feature_name); gst_caps_set_simple (tmp, "format", G_TYPE_STRING, "RGBA", NULL); } return tmp; } /* copies the given caps */ static GstCaps * gst_gl_mixer_caps_remove_format_info (GstCaps * caps) { GstStructure *st; GstCapsFeatures *f; gint i, n; GstCaps *res; res = gst_caps_new_empty (); n = gst_caps_get_size (caps); for (i = 0; i < n; i++) { st = gst_caps_get_structure (caps, i); f = gst_caps_get_features (caps, i); /* If this is already expressed by the existing caps * skip this structure */ if (i > 0 && gst_caps_is_subset_structure_full (res, st, f)) continue; st = gst_structure_copy (st); /* Only remove format info for the cases when we can actually convert */ if (!gst_caps_features_is_any (f) && gst_caps_features_is_equal (f, GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY)) gst_structure_remove_fields (st, "format", "colorimetry", "chroma-site", "width", "height", NULL); gst_caps_append_structure_full (res, st, gst_caps_features_copy (f)); } return res; } GstCaps * gst_gl_mixer_update_caps (GstGLMixer * mix, GstCaps * caps) { GstCaps *result = NULL; GstCaps *glcaps = gst_gl_mixer_set_caps_features (caps, GST_CAPS_FEATURE_MEMORY_GL_MEMORY); #if GST_GL_HAVE_PLATFORM_EGL GstCaps *eglcaps = gst_gl_mixer_set_caps_features (caps, GST_CAPS_FEATURE_MEMORY_EGL_IMAGE); #endif GstCaps *uploadcaps = gst_gl_mixer_set_caps_features (caps, GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META); GstCaps *raw_caps = gst_caps_from_string (GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS)); result = gst_caps_new_empty (); result = gst_caps_merge (result, glcaps); #if GST_GL_HAVE_PLATFORM_EGL result = gst_caps_merge (result, eglcaps); #endif result = gst_caps_merge (result, uploadcaps); result = gst_caps_merge (result, raw_caps); result = gst_caps_merge (result, gst_gl_mixer_caps_remove_format_info (caps)); GST_DEBUG_OBJECT (mix, "returning %" GST_PTR_FORMAT, result); return result; } static gboolean gst_gl_mixer_src_query (GstAggregator * agg, GstQuery * query) { gboolean res = FALSE; GstGLMixer *mix = GST_GL_MIXER (agg); switch (GST_QUERY_TYPE (query)) { case GST_QUERY_CONTEXT: { res = gst_gl_handle_context_query ((GstElement *) mix, query, &mix->display, &mix->other_context); break; } case GST_QUERY_CAPS: res = gst_gl_mixer_query_caps (agg->srcpad, agg, query); break; default: res = GST_AGGREGATOR_CLASS (parent_class)->src_query (agg, query); break; } return res; } static GstFlowReturn gst_gl_mixer_get_output_buffer (GstVideoAggregator * videoaggregator, GstBuffer ** outbuf) { GstGLMixer *mix = GST_GL_MIXER (videoaggregator); if (!mix->priv->pool_active) { if (!gst_buffer_pool_set_active (mix->priv->pool, TRUE)) { GST_ELEMENT_ERROR (mix, RESOURCE, SETTINGS, ("failed to activate bufferpool"), ("failed to activate bufferpool")); return GST_FLOW_ERROR; } mix->priv->pool_active = TRUE; } return gst_buffer_pool_acquire_buffer (mix->priv->pool, outbuf, NULL); } static gboolean gst_gl_mixer_decide_allocation (GstGLMixer * mix, GstQuery * query) { GstGLMixerClass *mixer_class = GST_GL_MIXER_GET_CLASS (mix); GstBufferPool *pool = NULL; GstStructure *config; GstCaps *caps; guint min, max, size; gboolean update_pool; GError *error = NULL; guint idx; guint out_width, out_height; GstGLContext *other_context = NULL; GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mix); if (!gst_gl_ensure_element_data (mix, &mix->display, &mix->other_context)) return FALSE; if (gst_query_find_allocation_meta (query, GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, &idx)) { GstGLContext *context; const GstStructure *upload_meta_params; gpointer handle; gchar *type; gchar *apis; gst_query_parse_nth_allocation_meta (query, idx, &upload_meta_params); if (upload_meta_params) { if (gst_structure_get (upload_meta_params, "gst.gl.GstGLContext", GST_GL_TYPE_CONTEXT, &context, NULL) && context) { GstGLContext *old = mix->context; mix->context = context; if (old) gst_object_unref (old); } else if (gst_structure_get (upload_meta_params, "gst.gl.context.handle", G_TYPE_POINTER, &handle, "gst.gl.context.type", G_TYPE_STRING, &type, "gst.gl.context.apis", G_TYPE_STRING, &apis, NULL) && handle) { GstGLPlatform platform; GstGLAPI gl_apis; GST_DEBUG ("got GL context handle 0x%p with type %s and apis %s", handle, type, apis); platform = gst_gl_platform_from_string (type); gl_apis = gst_gl_api_from_string (apis); if (gl_apis && platform) other_context = gst_gl_context_new_wrapped (mix->display, (guintptr) handle, platform, gl_apis); } } } if (mix->other_context) { if (!other_context) { other_context = mix->other_context; } else { GST_ELEMENT_WARNING (mix, LIBRARY, SETTINGS, ("%s", "Cannot share with more than one GL context"), ("%s", "Cannot share with more than one GL context")); } } if (!mix->context) { mix->context = gst_gl_context_new (mix->display); if (!gst_gl_context_create (mix->context, other_context, &error)) goto context_error; } out_width = GST_VIDEO_INFO_WIDTH (&vagg->info); out_height = GST_VIDEO_INFO_HEIGHT (&vagg->info); g_mutex_lock (&mix->priv->gl_resource_lock); mix->priv->gl_resource_ready = FALSE; if (mix->fbo) { gst_gl_context_del_fbo (mix->context, mix->fbo, mix->depthbuffer); mix->fbo = 0; mix->depthbuffer = 0; } if (!gst_gl_context_gen_fbo (mix->context, out_width, out_height, &mix->fbo, &mix->depthbuffer)) { g_cond_signal (&mix->priv->gl_resource_cond); g_mutex_unlock (&mix->priv->gl_resource_lock); goto context_error; } if (mix->out_tex_id) gst_gl_context_del_texture (mix->context, &mix->out_tex_id); gst_gl_context_gen_texture (mix->context, &mix->out_tex_id, GST_VIDEO_FORMAT_RGBA, out_width, out_height); gst_query_parse_allocation (query, &caps, NULL); if (mixer_class->set_caps) mixer_class->set_caps (mix, caps); mix->priv->gl_resource_ready = TRUE; g_cond_signal (&mix->priv->gl_resource_cond); g_mutex_unlock (&mix->priv->gl_resource_lock); if (gst_query_get_n_allocation_pools (query) > 0) { gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max); update_pool = TRUE; } else { GstVideoInfo vinfo; gst_video_info_init (&vinfo); gst_video_info_from_caps (&vinfo, caps); size = vinfo.size; min = max = 0; update_pool = FALSE; } if (!pool) pool = gst_gl_buffer_pool_new (mix->context); config = gst_buffer_pool_get_config (pool); gst_buffer_pool_config_set_params (config, caps, size, min, max); gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META); gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META); gst_buffer_pool_set_config (pool, config); if (update_pool) gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max); else gst_query_add_allocation_pool (query, pool, size, min, max); gst_object_unref (pool); return TRUE; context_error: { GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s", error->message), (NULL)); return FALSE; } } /* takes ownership of the pool, allocator and query */ static gboolean gst_gl_mixer_set_allocation (GstGLMixer * mix, GstBufferPool * pool, GstAllocator * allocator, GstAllocationParams * params, GstQuery * query) { GstAllocator *oldalloc; GstBufferPool *oldpool; GstQuery *oldquery; GstGLMixerPrivate *priv = mix->priv; GST_DEBUG ("storing allocation query"); GST_OBJECT_LOCK (mix); oldpool = priv->pool; priv->pool = pool; priv->pool_active = FALSE; oldalloc = priv->allocator; priv->allocator = allocator; oldquery = priv->query; priv->query = query; if (params) priv->params = *params; else gst_allocation_params_init (&priv->params); GST_OBJECT_UNLOCK (mix); if (oldpool) { GST_DEBUG_OBJECT (mix, "deactivating old pool %p", oldpool); gst_buffer_pool_set_active (oldpool, FALSE); gst_object_unref (oldpool); } if (oldalloc) { gst_object_unref (oldalloc); } if (oldquery) { gst_query_unref (oldquery); } return TRUE; } static gboolean gst_gl_mixer_do_bufferpool (GstGLMixer * mix, GstCaps * outcaps) { GstQuery *query; gboolean result = TRUE; GstBufferPool *pool = NULL; GstAllocator *allocator; GstAllocationParams params; GstAggregator *agg = GST_AGGREGATOR (mix); /* find a pool for the negotiated caps now */ GST_DEBUG_OBJECT (mix, "doing allocation query"); query = gst_query_new_allocation (outcaps, TRUE); if (!gst_pad_peer_query (agg->srcpad, query)) { /* not a problem, just debug a little */ GST_DEBUG_OBJECT (mix, "peer ALLOCATION query failed"); } GST_DEBUG_OBJECT (mix, "calling decide_allocation"); result = gst_gl_mixer_decide_allocation (mix, query); GST_DEBUG_OBJECT (mix, "ALLOCATION (%d) params: %" GST_PTR_FORMAT, result, query); if (!result) goto no_decide_allocation; /* we got configuration from our peer or the decide_allocation method, * parse them */ if (gst_query_get_n_allocation_params (query) > 0) { gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms); } else { allocator = NULL; gst_allocation_params_init (¶ms); } if (gst_query_get_n_allocation_pools (query) > 0) gst_query_parse_nth_allocation_pool (query, 0, &pool, NULL, NULL, NULL); /* now store */ result = gst_gl_mixer_set_allocation (mix, pool, allocator, ¶ms, query); return result; /* Errors */ no_decide_allocation: { GST_WARNING_OBJECT (mix, "Failed to decide allocation"); gst_query_unref (query); return result; } } gboolean gst_gl_mixer_process_textures (GstGLMixer * mix, GstBuffer * outbuf) { guint i; GList *walk; guint out_tex; gboolean res = TRUE; guint array_index = 0; GstVideoFrame out_frame; GstElement *element = GST_ELEMENT (mix); GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mix); GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix); GstGLMixerPrivate *priv = mix->priv; gboolean to_download = gst_caps_features_is_equal (GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY, gst_caps_get_features (mix->out_caps, 0)); GstMapFlags out_map_flags = GST_MAP_WRITE; GST_TRACE ("Processing buffers"); to_download |= !gst_is_gl_memory (gst_buffer_peek_memory (outbuf, 0)); if (!to_download) out_map_flags |= GST_MAP_GL; if (!gst_video_frame_map (&out_frame, &vagg->info, outbuf, out_map_flags)) { return FALSE; } if (!to_download) { out_tex = *(guint *) out_frame.data[0]; } else { GST_INFO ("Output Buffer does not contain correct memory, " "attempting to wrap for download"); if (!mix->download) mix->download = gst_gl_download_new (mix->context); gst_gl_download_set_format (mix->download, &out_frame.info); out_tex = mix->out_tex_id; } GST_OBJECT_LOCK (mix); walk = element->sinkpads; i = mix->frames->len; g_ptr_array_set_size (mix->frames, element->numsinkpads); for (; i < element->numsinkpads; i++) mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData); while (walk) { GstGLMixerPad *pad = GST_GL_MIXER_PAD (walk->data); GstVideoAggregatorPad *vaggpad = walk->data; GstGLMixerFrameData *frame; frame = g_ptr_array_index (mix->frames, array_index); frame->pad = pad; frame->texture = 0; walk = g_list_next (walk); if (vaggpad->buffer != NULL) { guint in_tex; if (!pad->upload) { pad->upload = gst_gl_upload_new (mix->context); gst_gl_upload_set_format (pad->upload, &vaggpad->info); } if (!gst_gl_upload_perform_with_buffer (pad->upload, vaggpad->buffer, &in_tex, NULL)) { ++array_index; pad->mapped = FALSE; continue; } pad->mapped = TRUE; frame->texture = in_tex; } ++array_index; } g_mutex_lock (&priv->gl_resource_lock); if (!priv->gl_resource_ready) g_cond_wait (&priv->gl_resource_cond, &priv->gl_resource_lock); if (!priv->gl_resource_ready) { g_mutex_unlock (&priv->gl_resource_lock); GST_ERROR_OBJECT (mix, "fbo used to render can't be created, do not run process_textures"); res = FALSE; goto out; } mix_class->process_textures (mix, mix->frames, out_tex); g_mutex_unlock (&priv->gl_resource_lock); if (to_download) { if (!gst_gl_download_perform_with_data (mix->download, out_tex, out_frame.data)) { GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s", "Failed to download video frame"), (NULL)); res = FALSE; goto out; } } out: i = 0; walk = GST_ELEMENT (mix)->sinkpads; while (walk) { GstGLMixerPad *pad = GST_GL_MIXER_PAD (walk->data); if (pad->mapped) gst_gl_upload_release_buffer (pad->upload); pad->mapped = FALSE; walk = g_list_next (walk); i++; } GST_OBJECT_UNLOCK (mix); gst_video_frame_unmap (&out_frame); return res; } static gboolean gst_gl_mixer_process_buffers (GstGLMixer * mix, GstBuffer * outbuf) { GList *walk; guint i, array_index = 0; GstElement *element = GST_ELEMENT (mix); GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix); GST_OBJECT_LOCK (mix); walk = GST_ELEMENT (mix)->sinkpads; i = mix->frames->len; g_ptr_array_set_size (mix->frames, element->numsinkpads); for (; i < element->numsinkpads; i++) mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData); while (walk) { /* We walk with this list because it's ordered */ GstVideoAggregatorPad *vaggpad = walk->data; walk = g_list_next (walk); if (vaggpad->buffer != NULL) { /* put buffer into array */ mix->array_buffers->pdata[array_index] = vaggpad->buffer; } ++array_index; } GST_OBJECT_UNLOCK (mix); return mix_class->process_buffers (mix, mix->array_buffers, outbuf); } static GstFlowReturn gst_gl_mixer_aggregate_frames (GstVideoAggregator * vagg, GstBuffer * outbuf) { gboolean res = FALSE; GstGLMixer *mix = GST_GL_MIXER (vagg); GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (vagg); if (mix_class->process_buffers) res = gst_gl_mixer_process_buffers (mix, outbuf); else if (mix_class->process_textures) res = gst_gl_mixer_process_textures (mix, outbuf); return res ? GST_FLOW_OK : GST_FLOW_ERROR; } static void gst_gl_mixer_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { switch (prop_id) { default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_gl_mixer_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { switch (prop_id) { default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static gboolean _clean_upload (GstAggregator * agg, GstPad * aggpad, gpointer udata) { GstGLMixerPad *pad = GST_GL_MIXER_PAD (aggpad); if (pad->upload) { gst_object_unref (pad->upload); pad->upload = NULL; } return TRUE; } static void _free_glmixer_frame_data (GstGLMixerFrameData * frame) { g_slice_free1 (sizeof (GstGLMixerFrameData), frame); } static gboolean gst_gl_mixer_start (GstAggregator * agg) { guint i; GstGLMixer *mix = GST_GL_MIXER (agg); GstElement *element = GST_ELEMENT (agg); if (!GST_AGGREGATOR_CLASS (parent_class)->start (agg)) return FALSE; GST_OBJECT_LOCK (mix); mix->array_buffers = g_ptr_array_new_full (element->numsinkpads, (GDestroyNotify) _free_glmixer_frame_data); mix->frames = g_ptr_array_new_full (element->numsinkpads, NULL); g_ptr_array_set_size (mix->array_buffers, element->numsinkpads); g_ptr_array_set_size (mix->frames, element->numsinkpads); for (i = 0; i < element->numsinkpads; i++) mix->frames->pdata[i] = g_slice_new0 (GstGLMixerFrameData); GST_OBJECT_UNLOCK (mix); return TRUE; } static gboolean gst_gl_mixer_stop (GstAggregator * agg) { GstGLMixer *mix = GST_GL_MIXER (agg); GstGLMixerClass *mixer_class = GST_GL_MIXER_GET_CLASS (mix); if (!GST_AGGREGATOR_CLASS (parent_class)->stop (agg)) return FALSE; GST_OBJECT_LOCK (agg); g_ptr_array_free (mix->frames, TRUE); mix->frames = NULL; g_ptr_array_free (mix->array_buffers, TRUE); mix->array_buffers = NULL; GST_OBJECT_UNLOCK (agg); if (mixer_class->reset) mixer_class->reset (mix); if (mix->fbo) { gst_gl_context_del_fbo (mix->context, mix->fbo, mix->depthbuffer); mix->fbo = 0; mix->depthbuffer = 0; } if (mix->download) { gst_object_unref (mix->download); mix->download = NULL; } gst_aggregator_iterate_sinkpads (GST_AGGREGATOR (mix), _clean_upload, NULL); if (mix->priv->query) { gst_query_unref (mix->priv->query); mix->priv->query = NULL; } if (mix->priv->pool) { gst_object_unref (mix->priv->pool); mix->priv->pool = NULL; } if (mix->display) { gst_object_unref (mix->display); mix->display = NULL; } if (mix->context) { gst_object_unref (mix->context); mix->context = NULL; } gst_gl_mixer_reset (mix); return TRUE; }