Bind CHOP

Summary

Allows for binding of CHOP channels and parameters.

When a parameter is bound to a channel in the Bind CHOP (via the parameter modes Export or Bind), any change in the channel will update the parameter value, and vice versa any change to the parameter will update the channel value.

Additionally, the Bind CHOP is a multi-input CHOP and will match input channels by Channel Number or Channel Name. It monitors the matched channels and updates the Bind CHOP's output channel to match whichever input changed most recently. When bound to a parameter (via Export mode or Bind mode) changes to any matched input or the bound parameter will update the channel's value.

A 'Callbacks DAT' is available for querying where the change was initiated and then taking further actions via python script.

This workflow is useful for binding multiple inputs to a parameter. For example, one input channel might be coming from a MIDI input device, and another channel coming from an OSC input device, and you want them both to control a given parameter. The Bind CHOP's output channel which is bound to the parameter will update to stay in sync with the most recent change from either of the inputs or the parameter. See video demonstration below.

Tutorial

Basic Bind CHOP setup: https://youtu.be/bLi-xrCUt-c

bindCHOP_Class

Parameters - Bind Page

Match by match - ⊞ - Match channels between inputs by name or index.

Channel Pickup pickup - When on a channel's value will not update until the changing input value crosses the current value.

Callbacks DAT callbacks - When channel values change the callbacks DAT can be used to query where the change was initiated and then take further actions via python script.

Parameters - Common Page

Time Slice timeslice - Turning this on forces the channels to be "Time Sliced". A Time Slice is the time between the last cook frame and the current cook frame.

Scope scope - To determine which channels get affected, some CHOPs use a Scope string on the Common page. See Pattern Matching.

Sample Rate Match srselect - ⊞ - Handle cases where multiple input CHOPs' sample rates are different. When Resampling occurs, the curves are interpolated according to the Interpolation Method Option, or "Linear" if the Interpolate Options are not available.

Export Method exportmethod - ⊞ - This will determine how to connect the CHOP channel to the parameter. Refer to the Export article for more information.

Export Root autoexportroot - This path points to the root node where all of the paths that exporting by Channel Name is Path:Parameter are relative to.

Export Table exporttable - The DAT used to hold the export information when using the DAT Table Export Methods (See above).

Operator Inputs

• Input 0: -

Info CHOP Channels

Extra Information for the Bind CHOP can be accessed via an Info CHOP.

Common CHOP Info Channels

• start - Start of the CHOP interval in samples.

• length - Number of samples in the CHOP.

• sample_rate - The samplerate of the channels in frames per second.

• num_channels - Number of channels in the CHOP.

• time_slice - 1 if CHOP is Time Slice enabled, 0 otherwise.

• export_sernum - A count of how often the export connections have been updated.

Common Operator Info Channels

• total_cooks - Number of times the operator has cooked since the process started.

• cook_time - Duration of the last cook in milliseconds.

• cook_frame - Frame number when this operator was last cooked relative to the component timeline.

• cook_abs_frame - Frame number when this operator was last cooked relative to the absolute time.

• cook_start_time - Time in milliseconds at which the operator started cooking in the frame it was cooked.

• cook_end_time - Time in milliseconds at which the operator finished cooking in the frame it was cooked.

• cooked_this_frame - 1 if operator was cooked this frame.

• warnings - Number of warnings in this operator if any.

• errors - Number of errors in this operator if any.

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