## Internal Commands¶

Internal commands correspond to the MAX or PD messages accepted by the antescofo~ object in a patch. The “internalization” of these messages as primitive actions makes the control of the MAX or the PD antescofo~ object possible from within the score itself. For example, it is posisble to switch the follower on or off when a specific musical event is reached.

Internal commands are named

       antescofo::xxx


where the suffix xxx is the head of the corresponding MAX/PD message recognized by antescofo~. The exaustive list of internal commands is given below together with their arguments. But first we focus on a set of very important commands used to navigate the score. These commands are critical in reharseal or during the design phase, as they evades the linearity of the score.

### Controlling the Execution Flow¶

These commands are also messages (from the Max or PD patch) to the Antescofo object (in this case, without the prefix antescofo::). They control the execution flow of an Antescofo program :

• antescofo::start (no argument)
Sends initialization actions (before first event) and wait for follower.

• antescofo::play (no argument)
Simulates the score (instrumental+electronics) from the beginning until the end or until stop.

• antescofo::startfromlabel string
antescofo::startfrombeat float
Executes the score from current position to position specified by the argument (a label given by a string or a position in beats) in accelerated more WITHOUT sending messages. Then waits for follower (or user input) right before this position.

• antescofo::scrubtolabel string
antescofo::scrubtobeat float
Executes in accelerated more the score from current position to position specified by the argument WITH sending messages up to (and not including) the specified position. Then waits for follower (or user input). The position is given by a lable (a string) or a position in beats.

• antescofo::playfromlabel string
antescofo::playfrombeat float
Executes the score from current position to position specified by the argument in accelerated more WITHOUT sending messages, then PLAYs (simulates) the score from thereon.

• antescofo::playtolabel string
antescofo::playtobeat float
Play (simulate) score from current position up to position specified by the argument.

• antescofo::gotolabel string
antescofo::gotobeat float
Position the system on the position specified by the argument without doing anything else.

### List of internal commands¶

• antescofo::actions string
inhibits (string = "off") or enables (string = "on") the launch of actions on events recognition. This is different from muting a track: muting a track inhibit the sending of some Max/PD messages while this command inhibit the performance of all actions.

• antescofo::analysis int int
specifies a new FFT windows length and a new hop size for the audio analysis.

• antescofo::ascographxy_set int int
defines the x and y position of the window. Look also some parameters of the interface in the inspector of the_Antescofo_ MAX object.

• antescofo::asco_trace int
turn on (int=1) or off (int = 0) the Ascograph tracking of the score position when is Antescofo is running in following mode.

• antescofo::bachscore string
send to the receivers recv a sequence of message tha descrive the current Anetscofo score. The format of the messages is understood by the bach.roll object in Max which will build a piano roll representation of the score.

• antescofo::before_nextlabel (no argument)
force the progression of the score following up-to the next label, launching the actions between the current point and the next label, but still waiting its occurence.

• antescofo::calibrate int
turn calibration mode on (1) or off (1).

• antescofo::decodewindow int
changes the length of the decoding window used in the inference of the position.

• antescofo::filewatchset string
(Max only) watch the file whose path is given by the argument, to reload it when changed on disk (the file is suppose dto be the source of the current score).

• antescofo::gamma float
change an internal parameter of the score following engine.

• antescofo::getlabels (no argument)
send to the first outlet the list of events label. Correspond to the get_cues message accepted by the object.

• antescofo::gotobeat float
position the follower at a position specified in beat without doing anything else. See below for moving in score commands.

• antescofo::gotolabel string
position the follower on an event specified by its label without doing anything else.

• antescofo::harmlist float … (a list of floats corresponding to a vector)
specify the list of harmonics used in the audio observation.

• antescofo::info (no argument)
print on the console output various informations on the version, and the current status of the object. Usefull when reporting a problem.

• antescofo::mute string
mute (inhibits the sending) of the messages matched by a track.

• antescofo::nextaction (no argument)
forces the follower to wait for the next event that has some associated actions. The actions triggered between the current position and the new one, are launched.

• antescofo::nextevent (no argument)
forces the follower to wait for the first event that appears after the current position. The actions between the current position and the next event are launched.

• antescofo::nextlabel (no argument)
forces the follower to wait for the next event that has a label. The actions between the current position and the next event are launched. The infered tempo is kept unchanged.

• antescofo::nofharm int
number of harmonics to compute for the audio analysis.

• antescofo::normin float
set some internal parameter of the score following.

• antescofo::obsexp float
set some internal parameter of the score following.

• antescofo::pedal int
enables () or disables () the use of a resonnance model in the audio observation.

• antescofo::piano int
turn the follower in the piano mode (corresponding to a set of parameters adjusted to optimize piano observation).

• antescofo::play (no argument)
simulates the score (instrumental$+$electronics) from the beginning until the end or until STOP.

• antescofo::playfrombeat float
executes the score from current position upto the position given by the argument in accelerated more WITHOUT sending messages, then PLAYs (simulates) the score from thereon.

• antescofo::playfromlabel string
executes the score from current position upto then event specified by the argument in accelerated more WITHOUT sending messages, then PLAYs (simulates) the score from thereon.

• antescofo::playstring string
interpret the string argument as an sequence of actions and perform it. This command is used by to evaluate a text region highlighted in the editor. It can be used to evaluate on-the-fly actions that have been dynamically generated in an improvisation scenario. Due to OSC limitation, the string size cannot be greather than 1000 characters. But see next command.

• antescofo::playstring_append string
this command is used to evaluate on-the-fly a string of size greather than 1000 characters. The sequence of actions must be broken in a sequence of strings each of size less than 1000. Each of these pieces are processed in turn by this command, except for the last one which uses

• antescofo::playtobeat float
PLAY (simulate) score from current position up to position specified by the argument.

• antescofo::playtolabel string
PLAY (simulate) score from current position up to the event specified by the argument.

• antescofo::preload string string
preloads a score and store it under a name (the second argument) for latter use.

• antescofo::preventzigzag string
allow or disallow zig-zag in the follower. In non-zig-zag mode, the default, the follower infer only increasing positions (except in the case of a jump). In zig-zag mode, the follower may revise a past inference. This ability does not impact the reactive engine : in any case, actions are performed without revision.

• antescofo::printfwd (no argument)
output the formatted print of the current program in a new window.

• antescofo::read string
loads the corresponding score from the file specified by the argument.

• antescofo::scrubtolabel string
Executes the score from current position to the event specified by the argument, in accelerated more WITH sending messages. Waits for follower (or user input) right before this position.

• antescofo::scrubtobeat string
Executes the score from current position to the position given by the argument, in accelerated more WITH sending messages. Waits for follower (or user input) right before this position.

• antescofo::setvar string numeric
antescofo::setvar string string
antescofo::setvar string $a_1$ $a_2$ $\dots$
assign the value given by the second argument to the variable named by the first argument. If they are more than two arguments, the $a_i$ are packed into a tab. Using this command, the environment may notify Antescofo some information. For instance, Antescofo may react because the variable is in the logical condition of a whenever. See external assignment.

• antescofo::score string
loads the corresponding score (an alias of ).

• antescofo::start string
Sends initialization actions (before first event) and wait for follower.

• antescofo::startfromlabel string
Executes the score from current position to position corresponding to in accelerated more WITHOUT sending messages. Waits for follower (or user input) right before this position.

• antescofo::startfrombeat int
Executes the score from current position to the given position in accelerated more WITHOUT sending messages. Waits for follower (or user input) right before this position.

• antescofo::stop (no argument)
stop the follower and abort the runing actions.

• antescofo::suivi int
enables or disables the follower. Even if the follower is off, actions may run and can be spanned and interaction with the environment may happens through and .

• antescofo::tune float
set the tuning base (default $440.0$Hz).

• antescofo::unmute string
unmute (allows the sending) of the messages matched by a track.

• antescofo::variance float
set the variance parameter of the inference algorithm.

• antescofo::verbosity int
specify the level of system messages emitted during execution.

• antescofo::version (no argument)
print the version of the object and various build information on the console.