mediagraph.h

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#pragma once
 
#include <promeki/core/namespace.h>
#include <promeki/core/objectbase.h>
#include <promeki/core/error.h>
#include <promeki/core/list.h>
#include <promeki/core/string.h>
#include <promeki/proav/medianode.h>
#include <promeki/proav/medialink.h>
 
PROMEKI_NAMESPACE_BEGIN
 
class MediaGraph : public ObjectBase {
        PROMEKI_OBJECT(MediaGraph, ObjectBase)
        public:
                MediaGraph(ObjectBase *parent = nullptr);
 
                virtual ~MediaGraph();
 
                Error addNode(MediaNode *node);
 
                Error removeNode(MediaNode *node);
 
                const List<MediaNode *> &nodes() const { return _nodes; }
 
                MediaNode *node(const String &name) const;
 
                MediaLink::Ptr connect(MediaPort::Ptr output, MediaPort::Ptr input);
 
                MediaLink::Ptr connect(MediaNode *source, int outputIndex, MediaNode *sink, int inputIndex);
 
                MediaLink::Ptr connect(MediaNode *source, const String &outputName,
                                       MediaNode *sink, const String &inputName);
 
                Error disconnect(MediaLink::Ptr link);
 
                Error disconnect(MediaPort::Ptr output, MediaPort::Ptr input);
 
                const MediaLink::PtrList &links() const { return _links; }
 
                Error validate() const;
 
                List<MediaNode *> topologicalSort() const;
 
                List<MediaNode *> sourceNodes() const;
 
                List<MediaNode *> sinkNodes() const;
 
                void clear();
 
        private:
                List<MediaNode *>       _nodes;
                MediaLink::PtrList      _links;
 
                bool ownsNode(MediaNode *node) const;
                bool hasCycle() const;
};
 
PROMEKI_NAMESPACE_END