engines/common/InstrumentScriptVM.cpp

/*
 * Copyright (c) 2014 Christian Schoenebeck
 *
 * http://www.linuxsampler.org
 *
 * This file is part of LinuxSampler and released under the same terms.
 * See README file for details.
 */

#include "InstrumentScriptVM.h"
#include "../AbstractEngineChannel.h"

namespace LinuxSampler {

    // circumvents a bug in GCC 4.4 which prevents the sizeof() expr to be used
    // directly within the scrope of a class (would throw a compiler error with:
    // "object missing in reference to 'LinuxSampler::AbstractEngineChannel::ControllerTable'")
    static const int _AbstractEngineChannel_ControllerTable_size = sizeof(AbstractEngineChannel::ControllerTable);

    InstrumentScriptVM::InstrumentScriptVM() : m_event(NULL) {
        m_CC.size = _AbstractEngineChannel_ControllerTable_size;
        m_CC_NUM = DECLARE_VMINT(m_cause, class Event, Param.CC.Controller);
        m_EVENT_NOTE = DECLARE_VMINT(m_cause, class Event, Param.Note.Key);
        m_EVENT_VELOCITY = DECLARE_VMINT(m_cause, class Event, Param.Note.Velocity);
    }

    VMExecStatus_t InstrumentScriptVM::exec(VMParserContext* parserCtx, ScriptEvent* event) {
        AbstractEngineChannel* pEngineChannel =
            static_cast<AbstractEngineChannel*>(event->cause.pEngineChannel);

        // prepare built-in script variables for script execution
        m_cause = &event->cause;
        m_CC.data = (int8_t*) &pEngineChannel->ControllerTable[0];

        // if script is in start condition, then do mandatory MIDI event
        // preprocessing tasks, which essentially means updating i.e. controller
        // table with new CC value in case of a controller event, because the
        // script might access the new CC value
        if (!event->executionSlices) {
            switch (m_cause->Type) {
                case Event::type_control_change:
                    pEngineChannel->ControllerTable[m_cause->Param.CC.Controller] =
                        m_cause->Param.CC.Value;
                    break;
                case Event::type_channel_pressure:
                    pEngineChannel->ControllerTable[CTRL_TABLE_IDX_AFTERTOUCH] =
                        m_cause->Param.ChannelPressure.Value;
                    break;
                case Event::type_pitchbend:
                    pEngineChannel->ControllerTable[CTRL_TABLE_IDX_PITCHBEND] =
                        m_cause->Param.Pitch.Pitch;
                    break;
            }
        }

        // run the script handler(s)
        VMExecStatus_t res = VM_EXEC_NOT_RUNNING;
        while (event->handlers[event->currentHandler]) {
            res = ScriptVM::exec(
                parserCtx, event->execCtx, event->handlers[event->currentHandler++]
            );
            event->executionSlices++;
            if (res & VM_EXEC_SUSPENDED || res & VM_EXEC_ERROR) return res;
        }

        return res;
    }

    std::map<String,VMIntRelPtr*> InstrumentScriptVM::builtInIntVariables() {
        // first get buil-in integer variables of derived VM class
        std::map<String,VMIntRelPtr*> m = ScriptVM::builtInIntVariables();

        // now add own built-in variables
        m["$CC_NUM"] = &m_CC_NUM;
        m["$EVENT_NOTE"] = &m_EVENT_NOTE;
        m["$EVENT_VELOCITY"] = &m_EVENT_VELOCITY;
//         m["$POLY_AT_NUM"] = &m_POLY_AT_NUM;

        return m;
    }

    std::map<String,VMInt8Array*> InstrumentScriptVM::builtInIntArrayVariables() {
        // first get buil-in integer array variables of derived VM class
        std::map<String,VMInt8Array*> m = ScriptVM::builtInIntArrayVariables();

        // now add own built-in variables
        m["%CC"] = &m_CC;
        //m["%KEY_DOWN"] = &m_KEY_DOWN;
        //m["%POLY_AT"] = &m_POLY_AT;

        return m;
    }

    std::map<String,int> InstrumentScriptVM::builtInConstIntVariables() {
        // first get buil-in integer variables of derived VM class
        std::map<String,int> m = ScriptVM::builtInConstIntVariables();

        m["$VCC_MONO_AT"] = CTRL_TABLE_IDX_AFTERTOUCH;
        m["$VCC_PITCH_BEND"] = CTRL_TABLE_IDX_PITCHBEND;

        return m;
    }

} // namespace LinuxSampler
1	schoenebeck	2594	/*
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 "InstrumentScriptVM.h"
11			#include "../AbstractEngineChannel.h"
12
13			namespace LinuxSampler {
14
15			// circumvents a bug in GCC 4.4 which prevents the sizeof() expr to be used
16			// directly within the scrope of a class (would throw a compiler error with:
17			// "object missing in reference to 'LinuxSampler::AbstractEngineChannel::ControllerTable'")
18			static const int _AbstractEngineChannel_ControllerTable_size = sizeof(AbstractEngineChannel::ControllerTable);
19
20			InstrumentScriptVM::InstrumentScriptVM() : m_event(NULL) {
21			m_CC.size = _AbstractEngineChannel_ControllerTable_size;
22			m_CC_NUM = DECLARE_VMINT(m_cause, class Event, Param.CC.Controller);
23			m_EVENT_NOTE = DECLARE_VMINT(m_cause, class Event, Param.Note.Key);
24			m_EVENT_VELOCITY = DECLARE_VMINT(m_cause, class Event, Param.Note.Velocity);
25			}
26
27			VMExecStatus_t InstrumentScriptVM::exec(VMParserContext* parserCtx, ScriptEvent* event) {
28			AbstractEngineChannel* pEngineChannel =
29			static_cast<AbstractEngineChannel*>(event->cause.pEngineChannel);
30
31			// prepare built-in script variables for script execution
32			m_cause = &event->cause;
33			m_CC.data = (int8_t*) &pEngineChannel->ControllerTable[0];
34
35			// if script is in start condition, then do mandatory MIDI event
36			// preprocessing tasks, which essentially means updating i.e. controller
37			// table with new CC value in case of a controller event, because the
38			// script might access the new CC value
39			if (!event->executionSlices) {
40			switch (m_cause->Type) {
41			case Event::type_control_change:
42			pEngineChannel->ControllerTable[m_cause->Param.CC.Controller] =
43			m_cause->Param.CC.Value;
44			break;
45			case Event::type_channel_pressure:
46			pEngineChannel->ControllerTable[CTRL_TABLE_IDX_AFTERTOUCH] =
47			m_cause->Param.ChannelPressure.Value;
48			break;
49			case Event::type_pitchbend:
50			pEngineChannel->ControllerTable[CTRL_TABLE_IDX_PITCHBEND] =
51			m_cause->Param.Pitch.Pitch;
52			break;
53			}
54			}
55
56			// run the script handler(s)
57			VMExecStatus_t res = VM_EXEC_NOT_RUNNING;
58			while (event->handlers[event->currentHandler]) {
59			res = ScriptVM::exec(
60			parserCtx, event->execCtx, event->handlers[event->currentHandler++]
61			);
62			event->executionSlices++;
63			if (res & VM_EXEC_SUSPENDED \|\| res & VM_EXEC_ERROR) return res;
64			}
65
66			return res;
67			}
68
69			std::map<String,VMIntRelPtr*> InstrumentScriptVM::builtInIntVariables() {
70			// first get buil-in integer variables of derived VM class
71			std::map<String,VMIntRelPtr*> m = ScriptVM::builtInIntVariables();
72
73			// now add own built-in variables
74			m["$CC_NUM"] = &m_CC_NUM;
75			m["$EVENT_NOTE"] = &m_EVENT_NOTE;
76			m["$EVENT_VELOCITY"] = &m_EVENT_VELOCITY;
77			// m["$POLY_AT_NUM"] = &m_POLY_AT_NUM;
78
79			return m;
80			}
81
82			std::map<String,VMInt8Array*> InstrumentScriptVM::builtInIntArrayVariables() {
83			// first get buil-in integer array variables of derived VM class
84			std::map<String,VMInt8Array*> m = ScriptVM::builtInIntArrayVariables();
85
86			// now add own built-in variables
87			m["%CC"] = &m_CC;
88			//m["%KEY_DOWN"] = &m_KEY_DOWN;
89			//m["%POLY_AT"] = &m_POLY_AT;
90
91			return m;
92			}
93
94			std::map<String,int> InstrumentScriptVM::builtInConstIntVariables() {
95			// first get buil-in integer variables of derived VM class
96			std::map<String,int> m = ScriptVM::builtInConstIntVariables();
97
98			m["$VCC_MONO_AT"] = CTRL_TABLE_IDX_AFTERTOUCH;
99			m["$VCC_PITCH_BEND"] = CTRL_TABLE_IDX_PITCHBEND;
100
101			return m;
102			}
103
104			} // namespace LinuxSampler