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revision 2732 by schoenebeck, Sun Apr 26 20:54:00 2015 UTC revision 3312 by schoenebeck, Sat Jul 15 17:04:05 2017 UTC
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15    
16      <h2>Built-In Functions</h2>      <h2>Built-In Functions</h2>
17      <p>      <p>
18        These are the built-in functions available with the NKSP realt-time        These are the built-in functions available with the NKSP real-time
19        instrument script language.        instrument script language.
20      </p>      </p>
21    
# Line 28  Line 28 
28          <th>Function</th> <th>Description</th>          <th>Function</th> <th>Description</th>
29        </tr>        </tr>
30        <tr>        <tr>
31          <td><code>message()</code></td>          <td><code lang="nksp">abort()</code></td>
32            <td>Stops execution of a script callback.</td>
33          </tr>
34          <tr>
35            <td><code lang="nksp">array_equal()</code></td>
36            <td>Check whether two arrays are equal.</td>
37          </tr>
38          <tr>
39            <td><code>fork()</code></td>
40            <td>Creates new execution instances (threads).</td>
41          </tr>
42          <tr>
43            <td><code>callback_status()</code></td>
44            <td>Returns the current status of a callback (thread).</td>
45          </tr>
46          <tr>
47            <td><code lang="nksp">dec()</code></td>
48            <td>Decrements the passed integer variable by one.</td>
49          </tr>
50          <tr>
51            <td><code>inc()</code></td>
52            <td>Increments the passed integer variable by one.</td>
53          </tr>
54          <tr>
55            <td><code>in_range()</code></td>
56            <td>Checks whether a value is between two other values.</td>
57          </tr>
58          <tr>
59            <td><code lang="nksp">message()</code></td>
60          <td>Prints text to the sampler's terminal.</td>          <td>Prints text to the sampler's terminal.</td>
61        </tr>        </tr>
62        <tr>        <tr>
63            <td><code>search()</code></td>
64            <td>Search for a certain value within an array.</td>
65          </tr>
66          <tr>
67            <td><code>sort()</code></td>
68            <td>Sort the given array.</td>
69          </tr>
70          <tr>
71          <td><code>exit()</code></td>          <td><code>exit()</code></td>
72          <td>Stops execution of the current event handler instance.</td>          <td>Stops execution of the current event handler instance.</td>
73        </tr>        </tr>
# Line 40  Line 76 
76          <td>Pauses execution for a certain amount of time.</td>          <td>Pauses execution for a certain amount of time.</td>
77        </tr>        </tr>
78        <tr>        <tr>
79            <td><code>stop_wait()</code></td>
80            <td>Resumes execution of a suspended script callback.</td>
81          </tr>
82          <tr>
83          <td><code>abs()</code></td>          <td><code>abs()</code></td>
84          <td>Calculates the absolute value of a given value.</td>          <td>Calculates the absolute value of a given value.</td>
85        </tr>        </tr>
# Line 48  Line 88 
88          <td>Random number generator.</td>          <td>Random number generator.</td>
89        </tr>        </tr>
90        <tr>        <tr>
91            <td><code>min()</code></td>
92            <td>Calculates the minimum value of two given values.</td>
93          </tr>
94          <tr>
95            <td><code>max()</code></td>
96            <td>Calculates the maximum value of two given values.</td>
97          </tr>
98          <tr>
99          <td><code>num_elements()</code></td>          <td><code>num_elements()</code></td>
100          <td>Returns the size of the requested array variable.</td>          <td>Returns the size of the requested array variable.</td>
101        </tr>        </tr>
102          <tr>
103            <td><code>sh_left()</code></td>
104            <td>Calculates a left bit shifted value.</td>
105          </tr>
106          <tr>
107            <td><code>sh_right()</code></td>
108            <td>Calculates a right bit shifted value.</td>
109          </tr>
110      </table>      </table>
111            
112      <h3>Common Sampler Functions</h3>      <h3>Common Sampler Functions</h3>
# Line 67  Line 123 
123          <td>Triggers a new note.</td>          <td>Triggers a new note.</td>
124        </tr>        </tr>
125        <tr>        <tr>
126            <td><code>change_note()</code></td>
127            <td>Change MIDI note number of note.</td>
128          </tr>
129          <tr>
130            <td><code>change_pan()</code></td>
131            <td>Changes panning of voices (stereo balance).</td>
132          </tr>
133          <tr>
134            <td><code>change_play_pos()</code></td>
135            <td>Change the sample playback position.</td>
136          </tr>
137          <tr>
138            <td><code>change_tune()</code></td>
139            <td>Changes the tuning of voices.</td>
140          </tr>
141          <tr>
142            <td><code>change_tune_time()</code></td>
143            <td>Changes the duration of tuning changes.</td>
144          </tr>
145          <tr>
146            <td><code>change_tune_curve()</code></td>
147            <td>Changes the curve type of tuning changes.</td>
148          </tr>
149          <tr>
150            <td><code>change_vol()</code></td>
151            <td>Changes the volume of voices.</td>
152          </tr>
153          <tr>
154            <td><code>change_vol_time()</code></td>
155            <td>Changes the duration of volume changes.</td>
156          </tr>
157          <tr>
158            <td><code>change_vol_curve()</code></td>
159            <td>Changes the curve type of volume changes.</td>
160          </tr>
161          <tr>
162            <td><code>change_cutoff()</code></td>
163            <td>Changes filter cutoff frequency of voices.</td>
164          </tr>
165          <tr>
166            <td><code>change_reso()</code></td>
167            <td>Changes filter resonance of voices.</td>
168          </tr>
169          <tr>
170            <td><code>change_attack()</code></td>
171            <td>Modifies the attack time of voices.</td>
172          </tr>
173          <tr>
174            <td><code>change_decay()</code></td>
175            <td>Modifies the decay time of voices.</td>
176          </tr>
177          <tr>
178            <td><code>change_release()</code></td>
179            <td>Modifies the release time of voices.</td>
180          </tr>
181          <tr>
182            <td><code>change_amp_lfo_depth()</code></td>
183            <td>Modifies the amplitude LFO depth.</td>
184          </tr>
185          <tr>
186            <td><code>change_amp_lfo_freq()</code></td>
187            <td>Modifies the amplitude LFO frequency.</td>
188          </tr>
189          <tr>
190            <td><code>change_pitch_lfo_depth()</code></td>
191            <td>Modifies the pitch LFO depth.</td>
192          </tr>
193          <tr>
194            <td><code>change_pitch_lfo_freq()</code></td>
195            <td>Modifies the pitch LFO frequency.</td>
196          </tr>
197          <tr>
198            <td><code>change_velo()</code></td>
199            <td>Change MIDI velocity of note.</td>
200          </tr>
201          <tr>
202            <td><code>event_status()</code></td>
203            <td>Checks and returns whether a particular note is still alive.</td>
204          </tr>
205          <tr>
206            <td><code>fade_in()</code></td>
207            <td>Fade the requested note in.</td>
208          </tr>
209          <tr>
210            <td><code>fade_out()</code></td>
211            <td>Fade the requested note out.</td>
212          </tr>
213          <tr>
214            <td><code>get_event_par()</code></td>
215            <td>Get the current value of a specific note parameter.</td>
216          </tr>
217          <tr>
218            <td><code>set_event_par()</code></td>
219            <td>Change the value of a specific note parameter.</td>
220          </tr>
221          <tr>
222          <td><code>set_controller()</code></td>          <td><code>set_controller()</code></td>
223          <td>Creates a MIDI control change event.</td>          <td>Creates a MIDI control change event.</td>
224        </tr>        </tr>
# Line 109  Line 261 
261          <td><code>gig_set_dim_zone()</code></td>          <td><code>gig_set_dim_zone()</code></td>
262          <td>Changes the currently active dimension zone.</td>          <td>Changes the currently active dimension zone.</td>
263        </tr>        </tr>
264          <tr>
265            <td><code>same_region()</code></td>
266            <td>Check whether two keys are mapped to the same region.</td>
267          </tr>
268      </table>      </table>
269    
270      <h2>Built-In Variables</h2>      <h2>Built-In Variables</h2>
# Line 116  Line 272 
272        These are the built-in variables and built-in constants available with the        These are the built-in variables and built-in constants available with the
273        NKSP realt-time instrument script language.        NKSP realt-time instrument script language.
274      </p>      </p>
275        
276        <h3>Core Language Variables</h3>
277        <p>
278          Most fundamental NKSP built-in variables, independent from any purpose of
279          being used in a sampler.
280        </p>
281        <table>
282          <tr>
283            <th>Variable</th> <th>Description</th>
284          </tr>
285          <tr>
286            <td><code>$CALLBACK_STATUS_QUEUE</code></td>
287            <td>Built-in constant reflecting the status of a callback to be
288                alive but suspended. See <code>callback_status()</code> for details.</td>
289          </tr>
290          <tr>
291            <td><code>$CALLBACK_STATUS_RUNNING</code></td>
292            <td>Built-in constant reflecting the status of a callback to be
293                alive and currently executing. See <code>callback_status()</code>
294                for details.</td>
295          </tr>
296          <tr>
297            <td><code>$CALLBACK_STATUS_TERMINATED</code></td>
298            <td>Built-in constant reflecting the status of a callback to be
299                not alive. See <code>callback_status()</code> for details.</td>
300          </tr>
301          <tr>
302            <td><code>$KSP_TIMER</code></td>
303            <td>Preserved for compatiblity reasons with KSP, returns the same value
304               as <code>$NKSP_REAL_TIMER</code> (refer to the latter for details).
305               Note that KSP's <code>reset_ksp_timer()</code> function is not available with
306               NKSP. However when calculating time differences between two time
307               stamps taken with <code>$NKSP_REAL_TIMER</code>, calling such a reset
308               function is not required, because the underlying clock does not stop
309               when it reached its value limit (which happens every 71 minutes), instead the clock
310               will automatically restart from zero and the calculated time difference
311               even between such transitions will reflect correct durations.</td>
312          </tr>
313          <tr>
314            <td><code>$NKSP_PERF_TIMER</code></td>
315            <td>Returns the current performance time stamp (in microseconds) of the
316                script running. You may read this variable from time to time to take
317                time stamps which can be used to calculate the time difference
318                (in microseconds) which elapsed between them. A performance time
319                stamp is based on the script's actual CPU execution time. So the
320                internal clock which is used for generating such time stamps is only
321                running forward if the respective script is actually executed by the
322                CPU. Whenever your script is not really executed by the CPU (i.e. because
323                your script got suspended by a wait() call or got forcely suspended due to
324                real-time constraints, or when the entire sampler application got suspended
325                by the OS for other applications or OS tasks) then the underlying internal
326                clock is paused as well.
327                <note class="important">
328                  You should only use this built-in variable for script development
329                  purposes (i.e. for bench marking the performance of your script).
330                  You should <b>not</b> use it with your final production sounds!
331                  It is not appropriate for being used in a musical context, because
332                  when an offline bounce is performed for instance, the musical timing
333                  will be completely unrelated to the CPU execution time. Plus using
334                  this variable may cause audio drop outs on some systems. In a musical
335                  context you should use <code>$ENGINE_UPTIME</code> instead, which is
336                  also safe for offline bounces.
337                </note>
338                <note>
339                  On some systems <code>$NKSP_REAL_TIMER</code> and
340                  <code>$NKSP_PERF_TIMER</code> will actually return the same value. So the
341                  difference between them is not implemented for all systems at the moment.
342                </note>
343            </td>
344          </tr>
345          <tr>
346            <td><code>%NKSP_CALLBACK_CHILD_ID[]</code></td>
347            <td>
348              Reflects the callback IDs of all child threads which the current
349              script callback instance spawned by having called <code>fork()</code> before.
350              See the latter function for details about this array variable.
351            </td>
352          </tr>
353          <tr>
354            <td><code>$NKSP_CALLBACK_PARENT_ID</code></td>
355            <td>
356              If the current execution thread is a child thread spawned by a <code>fork()</code>
357              call before, then this variable reflects the callback ID of the parent
358              thread which created this child thread. Otherwise this variable is <code>0</code>.
359              See <code>fork()</code> for more details about this variable.
360            </td>
361          </tr>
362          <tr>
363            <td><code>$NKSP_REAL_TIMER</code></td>
364            <td>Returns the current time stamp in reality (in microseconds). You may
365                read this variable from time to time to take
366                time stamps which can be used to calculate the time difference
367                (in microseconds) which elapsed between them. A "real" time
368                stamp is based on an internal clock which constantly proceeds, so this
369                internal clock also continues counting while your script is either suspended
370                (i.e. because your script got suspended by a wait() call or got forcely
371                suspended due to real-time constraints) and it also continues counting
372                even if the entire sampler application got suspended by the OS (i.e. to
373                execute other applications for multi-tasking or to perform OS tasks).
374                <note class="important">
375                  You should only use this built-in variable for script development
376                  purposes (i.e. for bench marking the performance of your script).
377                  You should <b>not</b> use it with your final production sounds!
378                  It is not appropriate for being used in a musical context, because
379                  when an offline bounce is performed for instance, the musical timing
380                  will be completely unrelated to the CPU execution time. Plus using
381                  this variable may cause audio drop outs on some systems. In a musical
382                  context you should use <code>$ENGINE_UPTIME</code> instead, which is
383                  also safe for offline bounces.
384                </note>
385                <note>
386                  On some systems <code>$NKSP_REAL_TIMER</code> and
387                  <code>$NKSP_PERF_TIMER</code> will actually return the same value. So the
388                  difference between them is not implemented for all systems at the moment.
389                </note>
390            </td>
391          </tr>
392          <tr>
393            <td><code>$NI_CALLBACK_ID</code></td>
394            <td>Reflects the current event handler instance's unique callback ID.
395                For the same event type there may be more than
396                one event handler instances running. Each one of them has
397                its own callback ID. You can get the current event handler
398                instance's callback ID by reading this built-in variable.</td>
399          </tr>
400          <tr>
401            <td><code>$NI_CALLBACK_TYPE</code></td>
402            <td>Reflects the event type of the current event handler. This variable
403                may reflect one of the following built-in constants:
404                <code>$NI_CB_TYPE_INIT</code>, <code>$NI_CB_TYPE_NOTE</code>,
405                <code>$NI_CB_TYPE_RELEASE</code>, <code>$NI_CB_TYPE_CONTROLLER</code>.</td>
406          </tr>
407          <tr>
408            <td><code>$NI_CB_TYPE_INIT</code></td>
409            <td>Built-in constant reflecting an <code>init</code> event handler type.</td>
410          </tr>
411          <tr>
412            <td><code>$NI_CB_TYPE_NOTE</code></td>
413            <td>Built-in constant reflecting a <code>note</code> event handler type.</td>
414          </tr>
415          <tr>
416            <td><code>$NI_CB_TYPE_RELEASE</code></td>
417            <td>Built-in constant reflecting a <code>release</code> event handler type.</td>
418          </tr>
419          <tr>
420            <td><code>$NI_CB_TYPE_CONTROLLER</code></td>
421            <td>Built-in constant reflecting a <code>controller</code> event handler type.</td>
422          </tr>
423          <tr>
424            <td><code>$NKSP_IGNORE_WAIT</code></td>
425            <td>If this boolean built-in variable is <code>1</code> then all calls of your
426                event handler instance to function <code>wait()</code> will be ignored.
427                This may for example be the case if another event handler instance
428                resumed your paused script by calling <code>stop_wait()</code> and
429                passing <code>1</code> to the 2nd argument of that function.</td>
430          </tr>
431        </table>
432    
433      <h3>Common Sampler Variables</h3>      <h3>Common Sampler Variables</h3>
434      <p>      <p>
435        Basic sampler related built-in variables and constants, independent from a        Basic sampler related built-in variables and constants, independent from a
# Line 127  Line 440 
440          <th>Variable</th> <th>Description</th>          <th>Variable</th> <th>Description</th>
441        </tr>        </tr>
442        <tr>        <tr>
443            <td><code>%ALL_EVENTS</code></td>
444            <td>
445              Note IDs of all currently active notes of the current sampler part (a.k.a. sampler channel).
446              This may be passed to many built-in functions like <code>note_off()</code>.
447              This array variable only contains IDs of notes which were launched due
448              to MIDI note-on events. This variable does not contain IDs of child notes
449              (i.e. notes which were launched programmatically by calling <code>play_note()</code>).
450              <note>
451                In contrast to KSP this variable is an integer array type, whereas KSP's
452                pendent of this built-in variable is an integer constant (scalar) called
453                <code>$ALL_EVENTS</code>. Using the latter with NKSP will cause a
454                parser warning, the behavior will be the same though.
455              </note>
456            </td>
457          </tr>
458          <tr>
459          <td><code>$CC_NUM</code></td>          <td><code>$CC_NUM</code></td>
460          <td>MIDI controller number that caused the <code>controller</code>          <td>MIDI controller number that caused the <code>controller</code>
461              handler to be executed (only useful in the context of a              handler to be executed (only useful in the context of a
# Line 160  Line 489 
489              <code>note</code> or <code>release</code> handler).</td>              <code>note</code> or <code>release</code> handler).</td>
490        </tr>        </tr>
491        <tr>        <tr>
492            <td><code>$EVENT_STATUS_INACTIVE</code></td>
493            <td>Constant bit flag used as possible return value by
494                <code>event_status()</code> in case the requested
495                note is not "alive".</td>
496          </tr>
497          <tr>
498            <td><code>$EVENT_STATUS_NOTE_QUEUE</code></td>
499            <td>Constant bit flag used as possible return value by
500                <code>event_status()</code> in case the requested
501                note is still "alive".</td>
502          </tr>
503          <tr>
504            <td><code>$EVENT_PAR_NOTE</code></td>
505            <td>Constant value symbolizing the "note number" parameter. See
506                <code>get_event_par()</code> and <code>set_event_par()</code>
507                for details.</td>
508          </tr>
509          <tr>
510            <td><code>$EVENT_PAR_TUNE</code></td>
511            <td>Constant value symbolizing the "tune" parameter. See
512                <code>get_event_par()</code> and <code>set_event_par()</code>
513                for details.</td>
514          </tr>
515          <tr>
516            <td><code>$EVENT_PAR_VELOCITY</code></td>
517            <td>Constant value symbolizing the "note velocity" parameter. See
518                <code>get_event_par()</code> and <code>set_event_par()</code>
519                for details.</td>
520          </tr>
521          <tr>
522            <td><code>$EVENT_PAR_VOLUME</code></td>
523            <td>Constant value symbolizing the "volume" parameter. See
524                <code>get_event_par()</code> and <code>set_event_par()</code>
525                for details.</td>
526          </tr>
527          <tr>
528            <td><code>$EVENT_PAR_0</code> to <code>$EVENT_PAR_3</code></td>
529            <td>Four constant values symbolizing the 4 possible user specific
530                parameters, which i.e. might be used to pass data from one script
531                (slot) to another script (slot). See  <code>get_event_par()</code>
532                and <code>set_event_par()</code> for details.</td>
533          </tr>
534          <tr>
535          <td><code>%KEY_DOWN[]</code></td>          <td><code>%KEY_DOWN[]</code></td>
536          <td>This can be used in any context to check whether a certain MIDI          <td>This can be used in any context to check whether a certain MIDI
537              key is currently pressed down. Use the respective MIDI note number              key is currently pressed down. Use the respective MIDI note number
538              as index to this array variable.</td>              as index to this array variable (see also <code>event_status()</code>).</td>
539          </tr>
540          <tr>
541            <td><code>$NKSP_EASE_IN_EASE_OUT</code></td>
542            <td>Used to select a fade curve with "ease in and ease out" shape.</td>
543          </tr>
544          <tr>
545            <td><code>$NKSP_LINEAR</code></td>
546            <td>Used to select a fade curve with linear shape.</td>
547        </tr>        </tr>
548        <tr>        <tr>
549          <td><code>$VCC_MONO_AT</code></td>          <td><code>$VCC_MONO_AT</code></td>
# Line 183  Line 563 
563              This is somewhat different than in the MIDI standard. With              This is somewhat different than in the MIDI standard. With
564              NKSP pitch bend is handled like an additional "regular" MIDI CC controller.              NKSP pitch bend is handled like an additional "regular" MIDI CC controller.
565              Therefore use              Therefore use
566              <code>%CC[$VCC_PITCH_BEND]</code> to obtain the current aftertouch value              <code>%CC[$VCC_PITCH_BEND]</code> to obtain the current pitch bend wheel value
567              in the context of a <code>controller</code> event handler.</td>              in the context of a <code>controller</code> event handler.</td>
568        </tr>        </tr>
569        <tr>        <tr>
# Line 191  Line 571 
571          <td>Used to select one of the available 28 event groups.          <td>Used to select one of the available 28 event groups.
572          See <code>set_event_mark()</code> for details.</td>          See <code>set_event_mark()</code> for details.</td>
573        </tr>        </tr>
574          <tr>
575            <td><code>$ENGINE_UPTIME</code></td>
576            <td>Returns the current time stamp (in milliseconds) for being
577                used in a musical context. You may read this variable from time to time
578                to take time stamps which can be used to calculate the time difference
579                (in milliseconds) which elapsed between them. These timing values are
580                based on the internal sample rate and thus it can safely be used to
581                perform musical timing related tasks in your scripts. Especially
582                your script will also continue to behave correctly when an offline bounce
583                of a song is performed.
584            </td>
585          </tr>
586      </table>      </table>
587    
588      <h3>GigaStudio Format Variables</h3>      <h3>GigaStudio Format Variables</h3>
# Line 227  Line 619 
619          <td>Constant that identifies the <i>keyboard position dimension</i>.</td>          <td>Constant that identifies the <i>keyboard position dimension</i>.</td>
620        </tr>        </tr>
621        <tr>        <tr>
622          <td><code>$GIG_DIM_ROUNDROBIN"</code></td>          <td><code>$GIG_DIM_ROUNDROBIN</code></td>
623          <td>Constant that identifies the <i>round robin dimension</i>.</td>          <td>Constant that identifies the <i>round robin dimension</i>.</td>
624        </tr>        </tr>
625        <tr>        <tr>
# Line 335  Line 727 
727          <td>Constant that identifies the <i>general purpose 8 MIDI controller dimension</i>.</td>          <td>Constant that identifies the <i>general purpose 8 MIDI controller dimension</i>.</td>
728        </tr>        </tr>
729      </table>      </table>
730    
731            <h2>Built-In Preprocessor Conditions</h2>
732        <p>
733          These are the built-in preprocessor conditions available with the NKSP realt-time
734          instrument script language.
735        </p>
736            
737        <h3>Core Language Preprocessor Conditions</h3>
738        <p>
739          Most fundamental NKSP built-in preprocessor conditions, independent from
740          any purpose of being used in a sampler.
741        </p>
742        <table>
743          <tr>
744            <th>Condition</th> <th>Description</th>
745          </tr>
746          <tr>
747            <td><code>NKSP_NO_MESSAGE</code></td>
748            <td>
749              By default this condition is not set. By explicitly enabling this
750              condition with <code>SET_CONDITION(NKSP_NO_MESSAGE)</code> it
751              causes all subsequent <code>message()</code> calls to be ignored
752              and filtered out on preprocessor level. See function <code>message()</code>
753              for details.
754            </td>
755          </tr>
756        </table>
757    
758    </body>    </body>
759  </html>  </html>

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