Table of Contents
Input and output pins
Filters send and receive data through pins. These pins come in two flavours:
- Input pins, where filters receive input data before the filter is rendered, and;
- Ouput pins, where filters push output data after the filter has been rendered.
Input pins are displayed on the left-hand side of a filter, and output pins are displayed on the right-hand side of a filter, as shown below:
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| A filter with four input pins (left) and one output pin (right). |
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Input and output pins behave differently in some ways, as described below:
Input pins
- You can manually edit the value of an input pin if it is not connected to another pin.
Output pins
- You cannot manually edit the value of an output pin. The value of an output pin is always and exclusively set by its parent filter.