Creating Topologies
This section describes some of the general procedures for creating a topology.
The general steps for creating a topology are as follows:
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Create a new topology object by calling MFCreateTopology. This function returns a pointer to the topology's IMFTopology interface.
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Initially, the topology does not contain any nodes. To create nodes for the topology, call MFCreateTopologyNode. This function returns a pointer to the node's IMFTopologyNode interface. You must specify the node type when you create the node:
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Source node.
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Transform node.
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Output node.
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Tee node.
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Initialize each node. The initialization process depends on the node type, as described in the topics that follow.
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Add each node to the topology by calling IMFTopology::AddNode.
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Connect the nodes. To connect a node, call IMFTopologyNode::ConnectOutput on the upstream node, and pass in a pointer to the downstream node.
The following topics give the specific steps for each node type.
| Topic | Description |
|---|---|
| Creating Source Nodes | How to create a source node. |
| Creating Transform Nodes | How to create a transform node. |
| Creating Output Nodes | How to create an output node. |
Related topics