MIDI In DAT

Summary

The MIDI In DAT logs all MIDI messages coming into TouchDesigner from a specified MIDI device. It outputs columns in a table format - message, type, channel, index, value.

However general setup is simpler. Once you have MIDI set up via the Dialogs -> MIDI Device Mapper, TouchDesigner is ready to receive MIDI via Select CHOPs that point to /local/maps/map1 for device 1, etc.

Also note that the controller indices reported by the MIDI In DAT are always converted to the 1 based range 1-128.

See also the MIDI Event DAT, MIDI In Map CHOP, MIDI In CHOP, MIDI Out CHOP, Tscript midi() Command, MIDI Device Mapper Dialog.

midiinDAT_Class

Parameters - Connect Page

Active active - Logs MIDI events when turned on.

Device Table device - Path to the MIDI device Table DAT

Device ID id - Path to the MIDI device Table DAT

14 Bit Values value14 - Turn on 14 Bit MIDI Event logging. The two 7-bit messages are consolidated and treated as a single 14-bit value to be outputted, unlike the MIDI Event DAT where both messages are outputted separately.

The incoming 7-bit messages must follow this specification to be properly interpreted as 14-bit:

Of the two messages, one is the MSB (Most Significant Byte) and the other is the LSB (Least Significant Byte), the values of which are combined to interpret the 14-bit value.
MSB message must be in the controller range 0-31.
LSB message must be in the controller range 32-63. And it's index should be MSB index + 32. i.e. if the MSB message has index 12, then the LSB message must have index 44.
In addition, the index pairs 98, 99 and 100, 101 can also be used as MSB, LSB pairs.
If only MSB message is received, nothing will be outputted. If multiple LSB messages are received sequentially without an MSB message, the value of the last received MSB message will be used to calculate the 14 bit value.
In this mode, messages in the index range 64-95 will be interpreted as 7 bit and be outputted as such since the range 64-95 is reserved for 7 bit messages.

Parameters - Filter Page

Skip Sense skipsense - Does not log sense messages when this is turned on.

Skip Timing skiptiming - Does not report timing messages when this is turned on.

Filter Messages filter - Turning this on enables the message filtering parameters below.

Message message - Filter by the MIDI message content. Example "Control Change"

Channel channel - Filter by the MIDI message channel. Channels range from 1 to 16.

Index index - Filter by the MIDI message index. Indices range from 1 to 128.

Value value - Filter by the MIDI message value. Values range from 0 to 127.

Parameters - Received Messages Page

Callbacks DAT callbacks - Runs this script once for each row added to the table (ie. each MIDI event received). See midiinDAT_Class for usage.

Execute from executeloc - ⊞ - Determines the location the script is run from.

Current Node current - The script is executed from the current node location (for example, where 'cc' points to).

Callbacks DAT callbacks - The script is executed from the location of the DAT specified in the Callbacks DAT parameter.

Specified Operator op - The script is executed from the operator specified in the From Operator parameter below.

From Operator fromop - The operator whose state change will trigger the DAT to execute its script when Execute from is set to Specified Operator. This operator is also the path that the script will be executed from if the Execute From parameter is set to Specified Operator.

Clamp Output clamp - The DAT is limited to 100 messages by default but with Clamp Output, this can be set to anything including unlimited.

Maximum Lines maxlines - Limits the number of messages, older messages are removed from the list first.

Clear Output clear - Deletes all lines except the heading. To clear with a python script op("opname").par.clear.pulse()

Bytes Column bytes - Outputs the raw bytes of the message in a separate column.

Parameters - Common Page

Language language - ⊞ - Select how the DAT decides which script language to operate on.

Input input - The DAT uses the inputs script language.

Node node - The DAT uses it's own script language.

Edit/View Extension extension - ⊞ - Select the file extension this DAT should expose to external editors.

dat dat - various common file extensions.

From Language language - pick extension from DATs script language.

Custom Extension custom - Specify a custom extension.

Custom Extension customext - Specifiy the custom extension.

Word Wrap wordwrap - ⊞ - Enable Word Wrap for Node Display.

Input input - The DAT uses the inputs setting.

On on - Turn on Word Wrap.

Off off - Turn off Word Wrap.

Info CHOP Channels

Extra Information for the MIDI In DAT can be accessed via an Info CHOP.

Common DAT Info Channels

num_rows - Number of rows in this DAT.

num_cols - Number of columns in this DAT.

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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