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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">array_equal()</code></td>
32            <td>Check whether two arrays are equal.</td>
33          </tr>
34          <tr>
35            <td><code lang="nksp">dec()</code></td>
36            <td>Decrements the passed integer variable by one.</td>
37          </tr>
38          <tr>
39            <td><code>inc()</code></td>
40            <td>Increments the passed integer variable by one.</td>
41          </tr>
42          <tr>
43            <td><code>in_range()</code></td>
44            <td>Checks whether a value is between two other values.</td>
45          </tr>
46          <tr>
47            <td><code lang="nksp">message()</code></td>
48          <td>Prints text to the sampler's terminal.</td>          <td>Prints text to the sampler's terminal.</td>
49        </tr>        </tr>
50        <tr>        <tr>
51            <td><code>search()</code></td>
52            <td>Search for a certain value within an array.</td>
53          </tr>
54          <tr>
55            <td><code>sort()</code></td>
56            <td>Sort the given array.</td>
57          </tr>
58          <tr>
59          <td><code>exit()</code></td>          <td><code>exit()</code></td>
60          <td>Stops execution of the current event handler instance.</td>          <td>Stops execution of the current event handler instance.</td>
61        </tr>        </tr>
# Line 40  Line 64 
64          <td>Pauses execution for a certain amount of time.</td>          <td>Pauses execution for a certain amount of time.</td>
65        </tr>        </tr>
66        <tr>        <tr>
67            <td><code>stop_wait()</code></td>
68            <td>Resumes execution of a suspended script callback.</td>
69          </tr>
70          <tr>
71          <td><code>abs()</code></td>          <td><code>abs()</code></td>
72          <td>Calculates the absolute value of a given value.</td>          <td>Calculates the absolute value of a given value.</td>
73        </tr>        </tr>
# Line 48  Line 76 
76          <td>Random number generator.</td>          <td>Random number generator.</td>
77        </tr>        </tr>
78        <tr>        <tr>
79            <td><code>min()</code></td>
80            <td>Calculates the minimum value of two given values.</td>
81          </tr>
82          <tr>
83            <td><code>max()</code></td>
84            <td>Calculates the maximum value of two given values.</td>
85          </tr>
86          <tr>
87          <td><code>num_elements()</code></td>          <td><code>num_elements()</code></td>
88          <td>Returns the size of the requested array variable.</td>          <td>Returns the size of the requested array variable.</td>
89        </tr>        </tr>
90          <tr>
91            <td><code>sh_left()</code></td>
92            <td>Calculates a left bit shifted value.</td>
93          </tr>
94          <tr>
95            <td><code>sh_right()</code></td>
96            <td>Calculates a right bit shifted value.</td>
97          </tr>
98      </table>      </table>
99            
100      <h3>Common Sampler Functions</h3>      <h3>Common Sampler Functions</h3>
# Line 67  Line 111 
111          <td>Triggers a new note.</td>          <td>Triggers a new note.</td>
112        </tr>        </tr>
113        <tr>        <tr>
114            <td><code>change_note()</code></td>
115            <td>Change MIDI note number of note.</td>
116          </tr>
117          <tr>
118            <td><code>change_pan()</code></td>
119            <td>Changes panning of voices (stereo balance).</td>
120          </tr>
121          <tr>
122            <td><code>change_tune()</code></td>
123            <td>Changes the tuning of voices.</td>
124          </tr>
125          <tr>
126            <td><code>change_tune_time()</code></td>
127            <td>Changes the duration of tuning changes.</td>
128          </tr>
129          <tr>
130            <td><code>change_vol()</code></td>
131            <td>Changes the volume of voices.</td>
132          </tr>
133          <tr>
134            <td><code>change_vol_time()</code></td>
135            <td>Changes the duration of volume changes.</td>
136          </tr>
137          <tr>
138            <td><code>change_cutoff()</code></td>
139            <td>Changes filter cutoff frequency of voices.</td>
140          </tr>
141          <tr>
142            <td><code>change_reso()</code></td>
143            <td>Changes filter resonance of voices.</td>
144          </tr>
145          <tr>
146            <td><code>change_attack()</code></td>
147            <td>Modifies the attack time of voices.</td>
148          </tr>
149          <tr>
150            <td><code>change_decay()</code></td>
151            <td>Modifies the decay time of voices.</td>
152          </tr>
153          <tr>
154            <td><code>change_release()</code></td>
155            <td>Modifies the release time of voices.</td>
156          </tr>
157          <tr>
158            <td><code>change_amp_lfo_depth()</code></td>
159            <td>Modifies the amplitude LFO depth.</td>
160          </tr>
161          <tr>
162            <td><code>change_amp_lfo_freq()</code></td>
163            <td>Modifies the amplitude LFO frequency.</td>
164          </tr>
165          <tr>
166            <td><code>change_pitch_lfo_depth()</code></td>
167            <td>Modifies the pitch LFO depth.</td>
168          </tr>
169          <tr>
170            <td><code>change_pitch_lfo_freq()</code></td>
171            <td>Modifies the pitch LFO frequency.</td>
172          </tr>
173          <tr>
174            <td><code>change_velo()</code></td>
175            <td>Change MIDI velocity of note.</td>
176          </tr>
177          <tr>
178            <td><code>event_status()</code></td>
179            <td>Checks and returns whether a particular note is still alive.</td>
180          </tr>
181          <tr>
182            <td><code>fade_in()</code></td>
183            <td>Fade the requested note in.</td>
184          </tr>
185          <tr>
186            <td><code>fade_out()</code></td>
187            <td>Fade the requested note out.</td>
188          </tr>
189          <tr>
190            <td><code>get_event_par()</code></td>
191            <td>Get the current value of a specific note parameter.</td>
192          </tr>
193          <tr>
194            <td><code>set_event_par()</code></td>
195            <td>Change the value of a specific note parameter.</td>
196          </tr>
197          <tr>
198          <td><code>set_controller()</code></td>          <td><code>set_controller()</code></td>
199          <td>Creates a MIDI control change event.</td>          <td>Creates a MIDI control change event.</td>
200        </tr>        </tr>
# Line 116  Line 244 
244        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
245        NKSP realt-time instrument script language.        NKSP realt-time instrument script language.
246      </p>      </p>
247        
248        <h3>Core Language Variables</h3>
249        <p>
250          Most fundamental NKSP built-in variables, independent from any purpose of
251          being used in a sampler.
252        </p>
253        <table>
254          <tr>
255            <th>Variable</th> <th>Description</th>
256          </tr>
257          <tr>
258            <td><code>$KSP_TIMER</code></td>
259            <td>Preserved for compatiblity reasons with KSP, returns the same value
260               as <code>$NKSP_REAL_TIMER</code> (refer to the latter for details).
261               Note that KSP's <code>reset_ksp_timer()</code> function is not available with
262               NKSP. However when calculating time differences between two time
263               stamps taken with <code>$NKSP_REAL_TIMER</code>, calling such a reset
264               function is not required, because the underlying clock does not stop
265               when it reached its value limit (which happens every 71 minutes), instead the clock
266               will automatically restart from zero and the calculated time difference
267               even between such transitions will reflect correct durations.</td>
268          </tr>
269          <tr>
270            <td><code>$NKSP_PERF_TIMER</code></td>
271            <td>Returns the current performance time stamp (in microseconds) of the
272                script running. You may read this variable from time to time to take
273                time stamps which can be used to calculate the time difference
274                (in microseconds) which elapsed between them. A performance time
275                stamp is based on the script's actual CPU execution time. So the
276                internal clock which is used for generating such time stamps is only
277                running forward if the respective script is actually executed by the
278                CPU. Whenever your script is not really executed by the CPU (i.e. because
279                your script got suspended by a wait() call or got forcely suspended due to
280                real-time constraints, or when the entire sampler application got suspended
281                by the OS for other applications or OS tasks) then the underlying internal
282                clock is paused as well.
283                <note class="important">
284                  You should only use this built-in variable for script development
285                  purposes (i.e. for bench marking the performance of your script).
286                  You should <b>not</b> use it with your final production sounds!
287                  It is not appropriate for being used in a musical context, because
288                  when an offline bounce is performed for instance, the musical timing
289                  will be completely unrelated to the CPU execution time. Plus using
290                  this variable may cause audio drop outs on some systems. In a musical
291                  context you should use <code>$ENGINE_UPTIME</code> instead, which is
292                  also safe for offline bounces.
293                </note>
294                <note>
295                  On some systems <code>$NKSP_REAL_TIMER</code> and
296                  <code>$NKSP_PERF_TIMER</code> will actually return the same value. So the
297                  difference between them is not implemented for all systems at the moment.
298                </note>
299            </td>
300          </tr>
301          <tr>
302            <td><code>$NKSP_REAL_TIMER</code></td>
303            <td>Returns the current time stamp in reality (in microseconds). You may
304                read this variable from time to time to take
305                time stamps which can be used to calculate the time difference
306                (in microseconds) which elapsed between them. A "real" time
307                stamp is based on an internal clock which constantly proceeds, so this
308                internal clock also continues counting while your script is either suspended
309                (i.e. because your script got suspended by a wait() call or got forcely
310                suspended due to real-time constraints) and it also continues counting
311                even if the entire sampler application got suspended by the OS (i.e. to
312                execute other applications for multi-tasking or to perform OS tasks).
313                <note class="important">
314                  You should only use this built-in variable for script development
315                  purposes (i.e. for bench marking the performance of your script).
316                  You should <b>not</b> use it with your final production sounds!
317                  It is not appropriate for being used in a musical context, because
318                  when an offline bounce is performed for instance, the musical timing
319                  will be completely unrelated to the CPU execution time. Plus using
320                  this variable may cause audio drop outs on some systems. In a musical
321                  context you should use <code>$ENGINE_UPTIME</code> instead, which is
322                  also safe for offline bounces.
323                </note>
324                <note>
325                  On some systems <code>$NKSP_REAL_TIMER</code> and
326                  <code>$NKSP_PERF_TIMER</code> will actually return the same value. So the
327                  difference between them is not implemented for all systems at the moment.
328                </note>
329            </td>
330          </tr>
331          <tr>
332            <td><code>$NI_CALLBACK_ID</code></td>
333            <td>Reflects the current event handler instance's unique callback ID.
334                For the same event type there may be more than
335                one event handler instances running. Each one of them has
336                its own callback ID. You can get the current event handler
337                instance's callback ID by reading this built-in variable.</td>
338          </tr>
339          <tr>
340            <td><code>$NI_CALLBACK_TYPE</code></td>
341            <td>Reflects the event type of the current event handler. This variable
342                may reflect one of the following built-in constants:
343                <code>$NI_CB_TYPE_INIT</code>, <code>$NI_CB_TYPE_NOTE</code>,
344                <code>$NI_CB_TYPE_RELEASE</code>, <code>$NI_CB_TYPE_CONTROLLER</code>.</td>
345          </tr>
346          <tr>
347            <td><code>$NI_CB_TYPE_INIT</code></td>
348            <td>Built-in constant reflecting an <code>init</code> event handler type.</td>
349          </tr>
350          <tr>
351            <td><code>$NI_CB_TYPE_NOTE</code></td>
352            <td>Built-in constant reflecting a <code>note</code> event handler type.</td>
353          </tr>
354          <tr>
355            <td><code>$NI_CB_TYPE_RELEASE</code></td>
356            <td>Built-in constant reflecting a <code>release</code> event handler type.</td>
357          </tr>
358          <tr>
359            <td><code>$NI_CB_TYPE_CONTROLLER</code></td>
360            <td>Built-in constant reflecting a <code>controller</code> event handler type.</td>
361          </tr>
362          <tr>
363            <td><code>$NKSP_IGNORE_WAIT</code></td>
364            <td>If this boolean built-in variable is <code>1</code> then all calls of your
365                event handler instance to function <code>wait()</code> will be ignored.
366                This may for example be the case if another event handler instance
367                resumed your paused script by calling <code>stop_wait()</code> and
368                passing <code>1</code> to the 2nd argument of that function.</td>
369          </tr>
370        </table>
371    
372      <h3>Common Sampler Variables</h3>      <h3>Common Sampler Variables</h3>
373      <p>      <p>
374        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 379 
379          <th>Variable</th> <th>Description</th>          <th>Variable</th> <th>Description</th>
380        </tr>        </tr>
381        <tr>        <tr>
382            <td><code>%ALL_EVENTS</code></td>
383            <td>
384              Note IDs of all currently active notes of the current sampler part (a.k.a. sampler channel).
385              This may be passed to many built-in functions like <code>note_off()</code>.
386              This array variable only contains IDs of notes which were launched due
387              to MIDI note-on events. This variable does not contain IDs of child notes
388              (i.e. notes which were launched programmatically by calling <code>play_note()</code>).
389              <note>
390                In contrast to KSP this variable is an integer array type, whereas KSP's
391                pendent of this built-in variable is an integer constant (scalar) called
392                <code>$ALL_EVENTS</code>. Using the latter with NKSP will cause a
393                parser warning, the behavior will be the same though.
394              </note>
395            </td>
396          </tr>
397          <tr>
398          <td><code>$CC_NUM</code></td>          <td><code>$CC_NUM</code></td>
399          <td>MIDI controller number that caused the <code>controller</code>          <td>MIDI controller number that caused the <code>controller</code>
400              handler to be executed (only useful in the context of a              handler to be executed (only useful in the context of a
# Line 160  Line 428 
428              <code>note</code> or <code>release</code> handler).</td>              <code>note</code> or <code>release</code> handler).</td>
429        </tr>        </tr>
430        <tr>        <tr>
431            <td><code>$EVENT_STATUS_INACTIVE</code></td>
432            <td>Constant bit flag used as possible return value by
433                <code>event_status()</code> in case the requested
434                note is not "alive".</td>
435          </tr>
436          <tr>
437            <td><code>$EVENT_STATUS_NOTE_QUEUE</code></td>
438            <td>Constant bit flag used as possible return value by
439                <code>event_status()</code> in case the requested
440                note is still "alive".</td>
441          </tr>
442          <tr>
443            <td><code>$EVENT_PAR_NOTE</code></td>
444            <td>Constant value symbolizing the "note number" parameter. See
445                <code>get_event_par()</code> and <code>set_event_par()</code>
446                for details.</td>
447          </tr>
448          <tr>
449            <td><code>$EVENT_PAR_TUNE</code></td>
450            <td>Constant value symbolizing the "tune" parameter. See
451                <code>get_event_par()</code> and <code>set_event_par()</code>
452                for details.</td>
453          </tr>
454          <tr>
455            <td><code>$EVENT_PAR_VELOCITY</code></td>
456            <td>Constant value symbolizing the "note velocity" parameter. See
457                <code>get_event_par()</code> and <code>set_event_par()</code>
458                for details.</td>
459          </tr>
460          <tr>
461            <td><code>$EVENT_PAR_VOLUME</code></td>
462            <td>Constant value symbolizing the "volume" parameter. See
463                <code>get_event_par()</code> and <code>set_event_par()</code>
464                for details.</td>
465          </tr>
466          <tr>
467            <td><code>$EVENT_PAR_0</code> to <code>$EVENT_PAR_3</code></td>
468            <td>Four constant values symbolizing the 4 possible user specific
469                parameters, which i.e. might be used to pass data from one script
470                (slot) to another script (slot). See  <code>get_event_par()</code>
471                and <code>set_event_par()</code> for details.</td>
472          </tr>
473          <tr>
474          <td><code>%KEY_DOWN[]</code></td>          <td><code>%KEY_DOWN[]</code></td>
475          <td>This can be used in any context to check whether a certain MIDI          <td>This can be used in any context to check whether a certain MIDI
476              key is currently pressed down. Use the respective MIDI note number              key is currently pressed down. Use the respective MIDI note number
477              as index to this array variable.</td>              as index to this array variable (see also <code>event_status()</code>).</td>
478        </tr>        </tr>
479        <tr>        <tr>
480          <td><code>$VCC_MONO_AT</code></td>          <td><code>$VCC_MONO_AT</code></td>
# Line 183  Line 494 
494              This is somewhat different than in the MIDI standard. With              This is somewhat different than in the MIDI standard. With
495              NKSP pitch bend is handled like an additional "regular" MIDI CC controller.              NKSP pitch bend is handled like an additional "regular" MIDI CC controller.
496              Therefore use              Therefore use
497              <code>%CC[$VCC_PITCH_BEND]</code> to obtain the current aftertouch value              <code>%CC[$VCC_PITCH_BEND]</code> to obtain the current pitch bend wheel value
498              in the context of a <code>controller</code> event handler.</td>              in the context of a <code>controller</code> event handler.</td>
499        </tr>        </tr>
500        <tr>        <tr>
# Line 191  Line 502 
502          <td>Used to select one of the available 28 event groups.          <td>Used to select one of the available 28 event groups.
503          See <code>set_event_mark()</code> for details.</td>          See <code>set_event_mark()</code> for details.</td>
504        </tr>        </tr>
505          <tr>
506            <td><code>$ENGINE_UPTIME</code></td>
507            <td>Returns the current time stamp (in milliseconds) for being
508                used in a musical context. You may read this variable from time to time
509                to take time stamps which can be used to calculate the time difference
510                (in milliseconds) which elapsed between them. These timing values are
511                based on the internal sample rate and thus it can safely be used to
512                perform musical timing related tasks in your scripts. Especially
513                your script will also continue to behave correctly when an offline bounce
514                of a song is performed.
515            </td>
516          </tr>
517      </table>      </table>
518    
519      <h3>GigaStudio Format Variables</h3>      <h3>GigaStudio Format Variables</h3>

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