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Channels and channel classes

This page applies to Harlequin v13.1r0 and later; and to Harlequin MultiRIP but not Harlequin Core

The connection between an input source and output destination is called a channel .

Each channel belongs to a channel class . Channels belonging to the same channel class have most characteristics in common, and are implemented with a common piece of code. For example, all parallel ports would be implemented by the same code, with a parameter associated with each channel in the class identifying the parallel port being referred to.

Input plugins describe the channel classes they support in a ChannelClassDescription structure. When the plugin is booted up, the RIP calls it repeatedly with the D_GET_CHANNEL_CLASS_DESCRIPTIONS selector to acquire the descriptions.

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