mirror of
https://github.com/Rafostar/clapper.git
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04a028d689
Create a GL context handler subclass of recently added context handler base class and rework code to use it. This simplifies a lot of things, like: switching of importers at runtime, handling context queries, sharing data between importers, etc.
131 lines
4.2 KiB
C
131 lines
4.2 KiB
C
/*
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* Copyright (C) 2022 Rafał Dzięgiel <rafostar.github@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstclapperglimporter.h"
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#define GST_CAT_DEFAULT gst_clapper_gl_importer_debug
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
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#define parent_class gst_clapper_gl_importer_parent_class
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GST_CLAPPER_IMPORTER_DEFINE (GstClapperGLImporter, gst_clapper_gl_importer, GST_TYPE_CLAPPER_IMPORTER);
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static GstBufferPool *
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gst_clapper_gl_importer_create_pool (GstClapperImporter *importer, GstStructure **config)
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{
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GstClapperGLImporter *self = GST_CLAPPER_GL_IMPORTER_CAST (importer);
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GstBufferPool *pool;
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GST_DEBUG_OBJECT (self, "Creating new GL buffer pool");
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pool = gst_gl_buffer_pool_new (self->gl_handler->gst_context);
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*config = gst_buffer_pool_get_config (pool);
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gst_buffer_pool_config_add_option (*config, GST_BUFFER_POOL_OPTION_VIDEO_META);
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gst_buffer_pool_config_add_option (*config, GST_BUFFER_POOL_OPTION_GL_SYNC_META);
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return pool;
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}
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static void
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gst_clapper_gl_importer_add_allocation_metas (GstClapperImporter *importer, GstQuery *query)
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{
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GstClapperGLImporter *self = GST_CLAPPER_GL_IMPORTER_CAST (importer);
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/* We can support GL sync meta */
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if (self->gl_handler->gst_context->gl_vtable->FenceSync)
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gst_query_add_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, NULL);
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/* Also add base importer class supported meta */
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GST_CLAPPER_IMPORTER_CLASS (parent_class)->add_allocation_metas (importer, query);
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}
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static GdkTexture *
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gst_clapper_gl_importer_generate_texture (GstClapperImporter *importer,
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GstBuffer *buffer, GstVideoInfo *v_info)
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{
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GstClapperGLImporter *self = GST_CLAPPER_GL_IMPORTER_CAST (importer);
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return gst_clapper_gl_context_handler_make_gl_texture (self->gl_handler, buffer, v_info);
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}
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static void
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gst_clapper_gl_importer_init (GstClapperGLImporter *self)
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{
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}
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static void
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gst_clapper_gl_importer_finalize (GObject *object)
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{
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GstClapperGLImporter *self = GST_CLAPPER_GL_IMPORTER_CAST (object);
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gst_clear_object (&self->gl_handler);
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GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
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}
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static void
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gst_clapper_gl_importer_class_init (GstClapperGLImporterClass *klass)
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{
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GObjectClass *gobject_class = (GObjectClass *) klass;
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GstClapperImporterClass *importer_class = (GstClapperImporterClass *) klass;
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GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "clapperglimporter", 0,
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"Clapper GL Importer");
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gobject_class->finalize = gst_clapper_gl_importer_finalize;
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importer_class->create_pool = gst_clapper_gl_importer_create_pool;
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importer_class->add_allocation_metas = gst_clapper_gl_importer_add_allocation_metas;
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importer_class->generate_texture = gst_clapper_gl_importer_generate_texture;
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}
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GstClapperImporter *
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make_importer (GPtrArray *context_handlers)
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{
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GstClapperGLImporter *self;
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GstClapperContextHandler *handler;
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handler = gst_clapper_context_handler_obtain_with_type (context_handlers,
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GST_TYPE_CLAPPER_GL_CONTEXT_HANDLER);
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if (G_UNLIKELY (!handler))
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return NULL;
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self = g_object_new (GST_TYPE_CLAPPER_GL_IMPORTER, NULL);
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self->gl_handler = GST_CLAPPER_GL_CONTEXT_HANDLER_CAST (handler);
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return GST_CLAPPER_IMPORTER_CAST (self);
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}
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GstCaps *
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make_caps (gboolean is_template, GstRank *rank, GPtrArray *context_handlers)
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{
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*rank = GST_RANK_SECONDARY;
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if (!is_template && context_handlers)
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gst_clapper_gl_context_handler_add_handler (context_handlers);
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return gst_clapper_gl_context_handler_make_gdk_gl_caps (
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GST_CAPS_FEATURE_MEMORY_GL_MEMORY, TRUE);
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}
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