/[svn]/linuxsampler/trunk/src/engines/common/InstrumentScriptVMFunctions.cpp
ViewVC logotype

Contents of /linuxsampler/trunk/src/engines/common/InstrumentScriptVMFunctions.cpp

Parent Directory Parent Directory | Revision Log Revision Log


Revision 2596 - (show annotations) (download)
Thu Jun 5 19:39:12 2014 UTC (9 years, 9 months ago) by schoenebeck
File size: 2427 byte(s)
* ScriptVM (WIP): Implemented execution of script event
  handlers "note" and "release".
* ScriptVM (WIP): Implemented built-in script function
  "play_note()" (only two of the max. four function
  arguments are currently implemented yet though).
* ScriptVM (WIP): Fixed incorrect handling of
  suspended scripts.
* Bumped version (1.0.0.svn43).

1 /*
2 * Copyright (c) 2014 Christian Schoenebeck
3 *
4 * http://www.linuxsampler.org
5 *
6 * This file is part of LinuxSampler and released under the same terms.
7 * See README file for details.
8 */
9
10 #include "InstrumentScriptVMFunctions.h"
11 #include "InstrumentScriptVM.h"
12 #include "../AbstractEngineChannel.h"
13
14 namespace LinuxSampler {
15
16 InstrumentScriptVMFunction_play_note::InstrumentScriptVMFunction_play_note(InstrumentScriptVM* parent)
17 : m_vm(parent)
18 {
19 }
20
21 VMFnResult* InstrumentScriptVMFunction_play_note::exec(VMFnArgs* args) {
22 int note = args->arg(0)->asInt()->evalInt();
23 int velocity = (args->argsCount() >= 2) ? args->arg(1)->asInt()->evalInt() : 127;
24 int sampleoffset = (args->argsCount() >= 3) ? args->arg(2)->asInt()->evalInt() : 0;
25 int duration = (args->argsCount() >= 4) ? args->arg(3)->asInt()->evalInt() : 0; //TODO: once -1 is implemented, it might be a better default value instead of 0
26
27 if (note < 0 || note > 127) {
28 errMsg("play_note(): argument 1 is an invalid note number");
29 return errorResult();
30 }
31
32 if (velocity < 0 || velocity > 127) {
33 errMsg("play_note(): argument 2 is an invalid velocity value");
34 return errorResult();
35 }
36
37 if (sampleoffset < 0) {
38 errMsg("play_note(): argument 3 may not be a negative sample offset");
39 return errorResult();
40 } else if (sampleoffset != 0) {
41 wrnMsg("play_note(): argument 3 does not support a sample offset other than 0 yet");
42 }
43
44 if (duration < -1) {
45 errMsg("play_note(): argument 4 must be a duration value of at least -1 or higher");
46 return errorResult();
47 } else if (duration == -1) {
48 wrnMsg("play_note(): argument 4 does not support special value -1 as duration yet");
49 } else if (duration != 0) {
50 wrnMsg("play_note(): argument 4 does not support any other value as 0 as duration yet");
51 }
52
53 AbstractEngineChannel* pEngineChannel =
54 static_cast<AbstractEngineChannel*>(m_vm->m_event->cause.pEngineChannel);
55
56 Event e = m_vm->m_event->cause;
57 e.Type = Event::type_note_on;
58 e.Param.Note.Key = note;
59 e.Param.Note.Velocity = velocity;
60
61 pEngineChannel->ScheduleEvent(&e, duration);
62
63 return successResult();
64 }
65
66 } // namespace LinuxSampler

  ViewVC Help
Powered by ViewVC