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ctlin

Output received MIDI control values

Description

ctlin can be assigned to a specific controller number and MIDI channel from which it can receive MIDI control values to send out its outlet.

Arguments

Name Type Opt Description
a-z symbol opt Specifies a single port from which to receive incoming control messages. If there is no letter present as an argument, ctlin can receive from all ports.
(MIDI name) symbol opt The name of a MIDI input device may be used as the first argument to specify the port.
controller-number and channel-number int opt Following the (optional) port argument, the next argument is a single controller number to be recognized by ctlin. If there is no controller number, or if the argument is a negative number, ctlin recognizes all controller numbers. If a single controller number is specified in the argument, the outlet which normally sends the controller number is unnecessary, and is not created.

Following the controller number argument is a single channel number on which to receive control messages. If the channel argument is not present, ctlin receives control messages on all channels. In order for this argument to be used, a controller number argument must precede it. To specify a channel number without specifying a controller number, use -1 for the controller number.

If a single channel number is specified as an argument, the outlet which normally sends the channel number is unnecessary, and is not created. If a port has been specified with a letter argument, channel numbers greater than 16 will be wrapped around to stay within the 1-16 range. If no port argument is present, a channel number can be used in place of a letter and number combination. The exact meaning of the channel number argument depends on the channel offset specified for each port in the MIDI Setup dialog.

Messages

anything MIDI-port [list]
 Performs the same function as port.
(mouse) Double-clicking on a ctlin object shows a pop-up menu for choosing a MIDI port or device.
(MIDI) ctlin receives its input from a MIDI control change message received from a MIDI input device.
port port-letter/name [symbol]
 The word port, followed by a letter a- z or the name of a MIDI input port or device, sets the port from which the object receives incoming control messages. The word port is optional and may be omitted.
set controller-number [int]
 The word set, followed by a number from 0 to 127, specifies a single controller number to be paid attention to by ctlin. This message is appropriate only if a specific controller number was originally typed in as an argument; it is ignored by ctlin if no controller number argument was originally typed in.

Information for box attributes common to all objects

Output

int: Out left outlet: The number is the control value of an incoming MIDI control change message.

If a specific controller number is not specified as an argument, the controller number is sent out the 2nd outlet.

If a specific channel number is not included in the argument, the channel number is sent out an additional, right, outlet.

Examples

Control messages can be filtered in a variety of ways

See Also

Name Description
bendin Output received MIDI pitch bend values
ctlout Transmit MIDI control messages
midiin Output received raw MIDI data
notein Output received MIDI note messages
rtin Output received MIDI real time messages
xbendin Interpret extra precision MIDI pitch bend values
Max MIDI Tutorial 1: Basic MIDI Max MIDI Tutorial 1: Basic MIDI