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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_pan_time()</code></td>
135            <td>Changes the duration of panning (stereo balance) changes.</td>
136          </tr>
137          <tr>
138            <td><code>change_pan_curve()</code></td>
139            <td>Changes the curve type of panning (stereo balance) changes.</td>
140          </tr>
141          <tr>
142            <td><code>change_play_pos()</code></td>
143            <td>Change the sample playback position.</td>
144          </tr>
145          <tr>
146            <td><code>change_tune()</code></td>
147            <td>Changes the tuning of voices.</td>
148          </tr>
149          <tr>
150            <td><code>change_tune_time()</code></td>
151            <td>Changes the duration of tuning changes.</td>
152          </tr>
153          <tr>
154            <td><code>change_tune_curve()</code></td>
155            <td>Changes the curve type of tuning changes.</td>
156          </tr>
157          <tr>
158            <td><code>change_vol()</code></td>
159            <td>Changes the volume of voices.</td>
160          </tr>
161          <tr>
162            <td><code>change_vol_time()</code></td>
163            <td>Changes the duration of volume changes.</td>
164          </tr>
165          <tr>
166            <td><code>change_vol_curve()</code></td>
167            <td>Changes the curve type of volume changes.</td>
168          </tr>
169          <tr>
170            <td><code>change_cutoff()</code></td>
171            <td>Changes filter cutoff frequency of voices.</td>
172          </tr>
173          <tr>
174            <td><code>change_reso()</code></td>
175            <td>Changes filter resonance of voices.</td>
176          </tr>
177          <tr>
178            <td><code>change_attack()</code></td>
179            <td>Modifies the attack time of voices.</td>
180          </tr>
181          <tr>
182            <td><code>change_decay()</code></td>
183            <td>Modifies the decay time of voices.</td>
184          </tr>
185          <tr>
186            <td><code>change_sustain()</code></td>
187            <td>Modifies the sustain level of voices.</td>
188          </tr>
189          <tr>
190            <td><code>change_release()</code></td>
191            <td>Modifies the release time of voices.</td>
192          </tr>
193          <tr>
194            <td><code>change_amp_lfo_depth()</code></td>
195            <td>Modifies the amplitude LFO depth.</td>
196          </tr>
197          <tr>
198            <td><code>change_amp_lfo_freq()</code></td>
199            <td>Modifies the amplitude LFO frequency.</td>
200          </tr>
201          <tr>
202            <td><code>change_pitch_lfo_depth()</code></td>
203            <td>Modifies the pitch LFO depth.</td>
204          </tr>
205          <tr>
206            <td><code>change_pitch_lfo_freq()</code></td>
207            <td>Modifies the pitch LFO frequency.</td>
208          </tr>
209          <tr>
210            <td><code>change_velo()</code></td>
211            <td>Change MIDI velocity of note.</td>
212          </tr>
213          <tr>
214            <td><code>event_status()</code></td>
215            <td>Checks and returns whether a particular note is still alive.</td>
216          </tr>
217          <tr>
218            <td><code>fade_in()</code></td>
219            <td>Fade the requested note in.</td>
220          </tr>
221          <tr>
222            <td><code>fade_out()</code></td>
223            <td>Fade the requested note out.</td>
224          </tr>
225          <tr>
226            <td><code>get_event_par()</code></td>
227            <td>Get the current value of a specific note parameter.</td>
228          </tr>
229          <tr>
230            <td><code>set_event_par()</code></td>
231            <td>Change the value of a specific note parameter.</td>
232          </tr>
233          <tr>
234          <td><code>set_controller()</code></td>          <td><code>set_controller()</code></td>
235          <td>Creates a MIDI control change event.</td>          <td>Creates a MIDI control change event.</td>
236        </tr>        </tr>
# Line 109  Line 273 
273          <td><code>gig_set_dim_zone()</code></td>          <td><code>gig_set_dim_zone()</code></td>
274          <td>Changes the currently active dimension zone.</td>          <td>Changes the currently active dimension zone.</td>
275        </tr>        </tr>
276          <tr>
277            <td><code>same_region()</code></td>
278            <td>Check whether two keys are mapped to the same region.</td>
279          </tr>
280      </table>      </table>
281    
282      <h2>Built-In Variables</h2>      <h2>Built-In Variables</h2>
# Line 116  Line 284 
284        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
285        NKSP realt-time instrument script language.        NKSP realt-time instrument script language.
286      </p>      </p>
287        
288        <h3>Core Language Variables</h3>
289        <p>
290          Most fundamental NKSP built-in variables, independent from any purpose of
291          being used in a sampler.
292        </p>
293        <table>
294          <tr>
295            <th>Variable</th> <th>Description</th>
296          </tr>
297          <tr>
298            <td><code>$CALLBACK_STATUS_QUEUE</code></td>
299            <td>Built-in constant reflecting the status of a callback to be
300                alive but suspended. See <code>callback_status()</code> for details.</td>
301          </tr>
302          <tr>
303            <td><code>$CALLBACK_STATUS_RUNNING</code></td>
304            <td>Built-in constant reflecting the status of a callback to be
305                alive and currently executing. See <code>callback_status()</code>
306                for details.</td>
307          </tr>
308          <tr>
309            <td><code>$CALLBACK_STATUS_TERMINATED</code></td>
310            <td>Built-in constant reflecting the status of a callback to be
311                not alive. See <code>callback_status()</code> for details.</td>
312          </tr>
313          <tr>
314            <td><code>$KSP_TIMER</code></td>
315            <td>Preserved for compatiblity reasons with KSP, returns the same value
316               as <code>$NKSP_REAL_TIMER</code> (refer to the latter for details).
317               Note that KSP's <code>reset_ksp_timer()</code> function is not available with
318               NKSP. However when calculating time differences between two time
319               stamps taken with <code>$NKSP_REAL_TIMER</code>, calling such a reset
320               function is not required, because the underlying clock does not stop
321               when it reached its value limit (which happens every 71 minutes), instead the clock
322               will automatically restart from zero and the calculated time difference
323               even between such transitions will reflect correct durations.</td>
324          </tr>
325          <tr>
326            <td><code>$NKSP_PERF_TIMER</code></td>
327            <td>Returns the current performance time stamp (in microseconds) of the
328                script running. You may read this variable from time to time to take
329                time stamps which can be used to calculate the time difference
330                (in microseconds) which elapsed between them. A performance time
331                stamp is based on the script's actual CPU execution time. So the
332                internal clock which is used for generating such time stamps is only
333                running forward if the respective script is actually executed by the
334                CPU. Whenever your script is not really executed by the CPU (i.e. because
335                your script got suspended by a wait() call or got forcely suspended due to
336                real-time constraints, or when the entire sampler application got suspended
337                by the OS for other applications or OS tasks) then the underlying internal
338                clock is paused as well.
339                <note class="important">
340                  You should only use this built-in variable for script development
341                  purposes (i.e. for bench marking the performance of your script).
342                  You should <b>not</b> use it with your final production sounds!
343                  It is not appropriate for being used in a musical context, because
344                  when an offline bounce is performed for instance, the musical timing
345                  will be completely unrelated to the CPU execution time. Plus using
346                  this variable may cause audio drop outs on some systems. In a musical
347                  context you should use <code>$ENGINE_UPTIME</code> instead, which is
348                  also safe for offline bounces.
349                </note>
350                <note>
351                  On some systems <code>$NKSP_REAL_TIMER</code> and
352                  <code>$NKSP_PERF_TIMER</code> will actually return the same value. So the
353                  difference between them is not implemented for all systems at the moment.
354                </note>
355            </td>
356          </tr>
357          <tr>
358            <td><code>%NKSP_CALLBACK_CHILD_ID[]</code></td>
359            <td>
360              Reflects the callback IDs of all child threads which the current
361              script callback instance spawned by having called <code>fork()</code> before.
362              See the latter function for details about this array variable.
363            </td>
364          </tr>
365          <tr>
366            <td><code>$NKSP_CALLBACK_PARENT_ID</code></td>
367            <td>
368              If the current execution thread is a child thread spawned by a <code>fork()</code>
369              call before, then this variable reflects the callback ID of the parent
370              thread which created this child thread. Otherwise this variable is <code>0</code>.
371              See <code>fork()</code> for more details about this variable.
372            </td>
373          </tr>
374          <tr>
375            <td><code>$NKSP_REAL_TIMER</code></td>
376            <td>Returns the current time stamp in reality (in microseconds). You may
377                read this variable from time to time to take
378                time stamps which can be used to calculate the time difference
379                (in microseconds) which elapsed between them. A "real" time
380                stamp is based on an internal clock which constantly proceeds, so this
381                internal clock also continues counting while your script is either suspended
382                (i.e. because your script got suspended by a wait() call or got forcely
383                suspended due to real-time constraints) and it also continues counting
384                even if the entire sampler application got suspended by the OS (i.e. to
385                execute other applications for multi-tasking or to perform OS tasks).
386                <note class="important">
387                  You should only use this built-in variable for script development
388                  purposes (i.e. for bench marking the performance of your script).
389                  You should <b>not</b> use it with your final production sounds!
390                  It is not appropriate for being used in a musical context, because
391                  when an offline bounce is performed for instance, the musical timing
392                  will be completely unrelated to the CPU execution time. Plus using
393                  this variable may cause audio drop outs on some systems. In a musical
394                  context you should use <code>$ENGINE_UPTIME</code> instead, which is
395                  also safe for offline bounces.
396                </note>
397                <note>
398                  On some systems <code>$NKSP_REAL_TIMER</code> and
399                  <code>$NKSP_PERF_TIMER</code> will actually return the same value. So the
400                  difference between them is not implemented for all systems at the moment.
401                </note>
402            </td>
403          </tr>
404          <tr>
405            <td><code>$NI_CALLBACK_ID</code></td>
406            <td>Reflects the current event handler instance's unique callback ID.
407                For the same event type there may be more than
408                one event handler instances running. Each one of them has
409                its own callback ID. You can get the current event handler
410                instance's callback ID by reading this built-in variable.</td>
411          </tr>
412          <tr>
413            <td><code>$NI_CALLBACK_TYPE</code></td>
414            <td>Reflects the event type of the current event handler. This variable
415                may reflect one of the following built-in constants:
416                <code>$NI_CB_TYPE_INIT</code>, <code>$NI_CB_TYPE_NOTE</code>,
417                <code>$NI_CB_TYPE_RELEASE</code>, <code>$NI_CB_TYPE_CONTROLLER</code>.</td>
418          </tr>
419          <tr>
420            <td><code>$NI_CB_TYPE_INIT</code></td>
421            <td>Built-in constant reflecting an <code>init</code> event handler type.</td>
422          </tr>
423          <tr>
424            <td><code>$NI_CB_TYPE_NOTE</code></td>
425            <td>Built-in constant reflecting a <code>note</code> event handler type.</td>
426          </tr>
427          <tr>
428            <td><code>$NI_CB_TYPE_RELEASE</code></td>
429            <td>Built-in constant reflecting a <code>release</code> event handler type.</td>
430          </tr>
431          <tr>
432            <td><code>$NI_CB_TYPE_CONTROLLER</code></td>
433            <td>Built-in constant reflecting a <code>controller</code> event handler type.</td>
434          </tr>
435          <tr>
436            <td><code>$NKSP_IGNORE_WAIT</code></td>
437            <td>If this boolean built-in variable is <code>1</code> then all calls of your
438                event handler instance to function <code>wait()</code> will be ignored.
439                This may for example be the case if another event handler instance
440                resumed your paused script by calling <code>stop_wait()</code> and
441                passing <code>1</code> to the 2nd argument of that function.</td>
442          </tr>
443        </table>
444    
445      <h3>Common Sampler Variables</h3>      <h3>Common Sampler Variables</h3>
446      <p>      <p>
447        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 452 
452          <th>Variable</th> <th>Description</th>          <th>Variable</th> <th>Description</th>
453        </tr>        </tr>
454        <tr>        <tr>
455            <td><code>%ALL_EVENTS</code></td>
456            <td>
457              Note IDs of all currently active notes of the current sampler part (a.k.a. sampler channel).
458              This may be passed to many built-in functions like <code>note_off()</code>.
459              This array variable only contains IDs of notes which were launched due
460              to MIDI note-on events. This variable does not contain IDs of child notes
461              (i.e. notes which were launched programmatically by calling <code>play_note()</code>).
462              <note>
463                In contrast to KSP this variable is an integer array type, whereas KSP's
464                pendent of this built-in variable is an integer constant (scalar) called
465                <code>$ALL_EVENTS</code>. Using the latter with NKSP will cause a
466                parser warning, the behavior will be the same though.
467              </note>
468            </td>
469          </tr>
470          <tr>
471          <td><code>$CC_NUM</code></td>          <td><code>$CC_NUM</code></td>
472          <td>MIDI controller number that caused the <code>controller</code>          <td>MIDI controller number that caused the <code>controller</code>
473              handler to be executed (only useful in the context of a              handler to be executed (only useful in the context of a
# Line 160  Line 501 
501              <code>note</code> or <code>release</code> handler).</td>              <code>note</code> or <code>release</code> handler).</td>
502        </tr>        </tr>
503        <tr>        <tr>
504            <td><code>$EVENT_STATUS_INACTIVE</code></td>
505            <td>Constant bit flag used as possible return value by
506                <code>event_status()</code> in case the requested
507                note is not "alive".</td>
508          </tr>
509          <tr>
510            <td><code>$EVENT_STATUS_NOTE_QUEUE</code></td>
511            <td>Constant bit flag used as possible return value by
512                <code>event_status()</code> in case the requested
513                note is still "alive".</td>
514          </tr>
515          <tr>
516            <td><code>$EVENT_PAR_NOTE</code></td>
517            <td>Constant value symbolizing the "note number" 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>$EVENT_PAR_TUNE</code></td>
523            <td>Constant value symbolizing the "tune" parameter. See
524                <code>get_event_par()</code> and <code>set_event_par()</code>
525                for details.</td>
526          </tr>
527          <tr>
528            <td><code>$EVENT_PAR_VELOCITY</code></td>
529            <td>Constant value symbolizing the "note velocity" parameter. See
530                <code>get_event_par()</code> and <code>set_event_par()</code>
531                for details.</td>
532          </tr>
533          <tr>
534            <td><code>$EVENT_PAR_VOLUME</code></td>
535            <td>Constant value symbolizing the "volume" parameter. See
536                <code>get_event_par()</code> and <code>set_event_par()</code>
537                for details.</td>
538          </tr>
539          <tr>
540            <td><code>$EVENT_PAR_0</code> to <code>$EVENT_PAR_3</code></td>
541            <td>Four constant values symbolizing the 4 possible user specific
542                parameters, which i.e. might be used to pass data from one script
543                (slot) to another script (slot). See  <code>get_event_par()</code>
544                and <code>set_event_par()</code> for details.</td>
545          </tr>
546          <tr>
547          <td><code>%KEY_DOWN[]</code></td>          <td><code>%KEY_DOWN[]</code></td>
548          <td>This can be used in any context to check whether a certain MIDI          <td>This can be used in any context to check whether a certain MIDI
549              key is currently pressed down. Use the respective MIDI note number              key is currently pressed down. Use the respective MIDI note number
550              as index to this array variable.</td>              as index to this array variable (see also <code>event_status()</code>).</td>
551          </tr>
552          <tr>
553            <td><code>$NKSP_EASE_IN_EASE_OUT</code></td>
554            <td>Used to select a fade curve with "ease in and ease out" shape.</td>
555          </tr>
556          <tr>
557            <td><code>$NKSP_LINEAR</code></td>
558            <td>Used to select a fade curve with linear shape.</td>
559        </tr>        </tr>
560        <tr>        <tr>
561          <td><code>$VCC_MONO_AT</code></td>          <td><code>$VCC_MONO_AT</code></td>
# Line 183  Line 575 
575              This is somewhat different than in the MIDI standard. With              This is somewhat different than in the MIDI standard. With
576              NKSP pitch bend is handled like an additional "regular" MIDI CC controller.              NKSP pitch bend is handled like an additional "regular" MIDI CC controller.
577              Therefore use              Therefore use
578              <code>%CC[$VCC_PITCH_BEND]</code> to obtain the current aftertouch value              <code>%CC[$VCC_PITCH_BEND]</code> to obtain the current pitch bend wheel value
579              in the context of a <code>controller</code> event handler.</td>              in the context of a <code>controller</code> event handler.</td>
580        </tr>        </tr>
581        <tr>        <tr>
# Line 191  Line 583 
583          <td>Used to select one of the available 28 event groups.          <td>Used to select one of the available 28 event groups.
584          See <code>set_event_mark()</code> for details.</td>          See <code>set_event_mark()</code> for details.</td>
585        </tr>        </tr>
586          <tr>
587            <td><code>$ENGINE_UPTIME</code></td>
588            <td>Returns the current time stamp (in milliseconds) for being
589                used in a musical context. You may read this variable from time to time
590                to take time stamps which can be used to calculate the time difference
591                (in milliseconds) which elapsed between them. These timing values are
592                based on the internal sample rate and thus it can safely be used to
593                perform musical timing related tasks in your scripts. Especially
594                your script will also continue to behave correctly when an offline bounce
595                of a song is performed.
596            </td>
597          </tr>
598      </table>      </table>
599    
600      <h3>GigaStudio Format Variables</h3>      <h3>GigaStudio Format Variables</h3>
# Line 227  Line 631 
631          <td>Constant that identifies the <i>keyboard position dimension</i>.</td>          <td>Constant that identifies the <i>keyboard position dimension</i>.</td>
632        </tr>        </tr>
633        <tr>        <tr>
634          <td><code>$GIG_DIM_ROUNDROBIN"</code></td>          <td><code>$GIG_DIM_ROUNDROBIN</code></td>
635          <td>Constant that identifies the <i>round robin dimension</i>.</td>          <td>Constant that identifies the <i>round robin dimension</i>.</td>
636        </tr>        </tr>
637        <tr>        <tr>
# Line 335  Line 739 
739          <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>
740        </tr>        </tr>
741      </table>      </table>
742    
743            <h2>Built-In Preprocessor Conditions</h2>
744        <p>
745          These are the built-in preprocessor conditions available with the NKSP realt-time
746          instrument script language.
747        </p>
748            
749        <h3>Core Language Preprocessor Conditions</h3>
750        <p>
751          Most fundamental NKSP built-in preprocessor conditions, independent from
752          any purpose of being used in a sampler.
753        </p>
754        <table>
755          <tr>
756            <th>Condition</th> <th>Description</th>
757          </tr>
758          <tr>
759            <td><code>NKSP_NO_MESSAGE</code></td>
760            <td>
761              By default this condition is not set. By explicitly enabling this
762              condition with <code>SET_CONDITION(NKSP_NO_MESSAGE)</code> it
763              causes all subsequent <code>message()</code> calls to be ignored
764              and filtered out on preprocessor level. See function <code>message()</code>
765              for details.
766            </td>
767          </tr>
768        </table>
769    
770    </body>    </body>
771  </html>  </html>

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