Alternative Video Renderers

This article describes some of the more complicated implementation requirements of a renderer; these apply to most renderers, although some aspects are video-specific (such as EC_REPAINT and other notifications). In particular, it discusses how to handle various notifications, state changes, and format changes. It also provides a summary of the notifications that a renderer is responsible for sending to the Filter Graph Manager.

This article contains the following sections:

• Writing an Alternative Renderer
• Handling End-of-stream and Flushing Notifications
• Handling State Changes and Pause Completion
• Handling Termination
• Handling Dynamic Format Changes
• Handling Persistent Properties
• Handling EC_REPAINT Notifications
• Handling Notifications in Full-Screen Mode
• Summary of Notifications