About Custom File and Stream Handlers
Your application can use a custom file handler to read from a file or write to
a file that is in a nonstandard format. To do this, your application simply
uses the name of your file handler when opening the file or allocating the file
interface. The AVIFile library then uses the functions from your file handler
instead of those from another file handler. The nonstandard format appears as
standard AVI data to your application or to any other application using your
custom file handler.
Similarly, your application can use a custom stream handler to read a stream
that is in a nonstandard format. A stream
whether it constitutes audio, video, MIDI, text, or custom data
is a component of an AVI file. For example, an AVI file that contains a video
sequence, an English soundtrack, and a French soundtrack consists of three
streams. Your application can specify the streams in an AVI file to process and
direct each of those streams to a handler that can optimally process the
appropriate type of multimedia data.
You must place custom stream and file handlers in one or more DLLs,
separated from main application files.
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