1 //*****************************************************************
2 /*
3   JackTrip: A System for High-Quality Audio Network Performance
4   over the Internet
5 
6   Copyright (c) 2008 Juan-Pablo Caceres, Chris Chafe.
7   SoundWIRE group at CCRMA, Stanford University.
8 
9   Permission is hereby granted, free of charge, to any person
10   obtaining a copy of this software and associated documentation
11   files (the "Software"), to deal in the Software without
12   restriction, including without limitation the rights to use,
13   copy, modify, merge, publish, distribute, sublicense, and/or sell
14   copies of the Software, and to permit persons to whom the
15   Software is furnished to do so, subject to the following
16   conditions:
17 
18   The above copyright notice and this permission notice shall be
19   included in all copies or substantial portions of the Software.
20 
21   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
23   OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24   NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
25   HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
26   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
27   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
28   OTHER DEALINGS IN THE SOFTWARE.
29 */
30 //*****************************************************************
31 
32 /**
33  * \file JackTrip.h
34  * \author Juan-Pablo Caceres
35  * \date October 2008
36  */
37 
38 #ifndef __NETKS_H__
39 #define __NETKS_H__
40 
41 #include <iostream>
42 //#include <unistd.h>
43 
44 #include <QTimer>
45 
46 #include "ProcessPlugin.h"
47 
48 /** \brief A simple (basic) network Karplus Strong.
49  *
50  * This plugin creates a one channel network karplus strong.
51  */
52 class NetKS : public ProcessPlugin
53 {
54     Q_OBJECT;
55 
56 
57 public:
58     /*
59   void play()
60   {
61     std::cout << "********** PALYING ***********************************" << std::endl;
62     QTimer *timer = new QTimer(this);
63     QObject::connect(timer, SIGNAL(timeout()),  this, SLOT(exciteString()));
64     timer->start(300);
65   }
66   */
67 
68 private slots:
69 
70     /// \brief Stlot to excite (play) the string
exciteString()71     void exciteString()
72     {
73         std::cout << "========= EXTICING STRING ===========" << std::endl;
74         fbutton0 = 1.0;
75         //std::cout << fbutton0 << std::endl;
76         QThread::usleep(280000); /// \todo Define this number based on the sampling rate and buffer size
77         fbutton0 = 0.0;
78         //std::cout << fbutton0 << std::endl;
79     }
80 
81     //=========== FROM FAUST ===================================================
82 private:
83     float fbutton0;
84     float fVec0[2];
85     float fRec0[2];
86     int   iRec1[2];
87     float fVec1[2];
88 public:
getNumInputs()89     virtual int getNumInputs() { return 1; }
getNumOutputs()90     virtual int getNumOutputs() { return 1; }
classInit(int)91     static void classInit(int /*samplingFreq*/) {}
instanceInit(int samplingFreq)92     virtual void instanceInit(int samplingFreq) {
93         fSamplingFreq = samplingFreq;
94         fbutton0 = 0.0;
95         for (int i=0; i<2; i++) fVec0[i] = 0;
96         for (int i=0; i<2; i++) fRec0[i] = 0;
97         for (int i=0; i<2; i++) iRec1[i] = 0;
98         for (int i=0; i<2; i++) fVec1[i] = 0;
99     }
init(int samplingFreq)100     virtual void init(int samplingFreq) {
101         classInit(samplingFreq);
102         instanceInit(samplingFreq);
103     }
104     /*
105         virtual void buildUserInterface(UI* interface) {
106                 interface->openVerticalBox("excitator");
107                 interface->addButton("play", &fbutton0);
108                 interface->closeBox();
109         }
110   */
compute(int count,float ** input,float ** output)111     virtual void compute (int count, float** input, float** output) {
112         float* input0 = input[0];
113         float* output0 = output[0];
114         float fSlow0 = fbutton0;
115         for (int i=0; i<count; i++) {
116             fVec0[0] = fSlow0;
117             fRec0[0] = ((((fSlow0 - fVec0[1]) > 0.000000f) + fRec0[1]) - (3.333333e-03f * (fRec0[1] > 0.000000f)));
118             iRec1[0] = (12345 + (1103515245 * iRec1[1]));
119             float fTemp0 = ((4.190951e-10f * iRec1[0]) * (fRec0[0] > 0.000000f));
120             float fTemp1 = input0[i];
121             fVec1[0] = (fTemp1 + fTemp0);
122             output0[i] = (0.500000f * ((fTemp0 + fTemp1) + fVec1[1]));
123             // post processing
124             fVec1[1] = fVec1[0];
125             iRec1[1] = iRec1[0];
126             fRec0[1] = fRec0[0];
127             fVec0[1] = fVec0[0];
128         }
129     }
130 
131     //============================================================================
132 
133 };
134 
135 
136 #endif // __NETKS_H__
137