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ref_iface_IVDXFilterPreview_UndoSystem
VirtualDub Plugin SDK 1.2
IVDXFilterPreview interface
Deinitializes the filter system in preparation for a complex update.
void UndoSystem();
This method is not thread-safe.
Errors may not be returned from this function (see SetError()).
UndoSystem() is used to temporarily take down the filter system when changes must be made that can't be done while the filter is initialized. The pattern for making such a change is as follows:
- Call UndoSystem() to stop the filter system.
- Change filter parameters.
- Call RedoSystem() to restart the filter system.
In cases where the filter system doesn't need to be stopped before making the changes, it is OK to simply make the changes and call RedoSystem().
If the filter system is not currently running or preview is not enabled, calls to UndoSystem() are ignored.
Copyright (C) 2007-2012 Avery Lee.
Setting up your development environment
Conventions
Plugin initialization
Dynamic loading
Reference counting
Using CPU extensions
Introduction
What's new
Breaking changes
Gotchas
Deprecated features
Migrating from the old Filter SDK
Programming model
Handling bitmaps
Creating a video filter
Setting filter parameters
Processing video frames
Managing filter data
Creating time-varying filters
Handling aspect ratio
Prefetching multiple source frames
Handling multiple sources
Making a filter configurable
Scripting support
CPU dependent optimization
VDXA index omitted
Getting started
Writing the module entry point
Creating a video filter
Adding configurability
Adding script support
Introduction
What's new
Autodetect
Direct mode
Video frames vs. samples
Video decodint model
Video decoder