1 /* SpiralSound
2 * Copyleft (C) 2001 David Griffiths <dave@pawfal.org>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 */
18 #include "BeatMatchPlugin.h"
19 #include "BeatMatchPluginGUI.h"
20 #include <FL/Fl_Button.H>
21 #include "SpiralIcon.xpm"
22 #include "../../NoteTable.h"
23
24 using namespace std;
25
26 extern "C" {
SpiralPlugin_CreateInstance()27 SpiralPlugin* SpiralPlugin_CreateInstance()
28 {
29 return new BeatMatchPlugin;
30 }
31
SpiralPlugin_GetIcon()32 char** SpiralPlugin_GetIcon()
33 {
34 return SpiralIcon_xpm;
35 }
36
SpiralPlugin_GetID()37 int SpiralPlugin_GetID()
38 {
39 return 48;
40 }
41
SpiralPlugin_GetGroupName()42 string SpiralPlugin_GetGroupName()
43 {
44 return "Maths/Logic";
45 }
46 }
47
48 ///////////////////////////////////////////////////////
49
BeatMatchPlugin()50 BeatMatchPlugin::BeatMatchPlugin() :
51 m_Triggered(false),
52 m_EstimatedDuration(100),
53 m_BeatTime(100),
54 m_NextBeat(100),
55 m_OutputLevel(1.0f),
56 m_Sensitivity(0.5f)
57 {
58 m_PluginInfo.Name="BeatMatch";
59 m_PluginInfo.Width=80;
60 m_PluginInfo.Height=80;
61 m_PluginInfo.NumInputs=1;
62 m_PluginInfo.NumOutputs=1;
63 m_PluginInfo.PortTips.push_back("Input");
64 m_PluginInfo.PortTips.push_back("Output");
65
66 m_AudioCH->Register("Sensitivity",&m_Sensitivity);
67 }
68
~BeatMatchPlugin()69 BeatMatchPlugin::~BeatMatchPlugin()
70 {
71 }
72
Initialise(const HostInfo * Host)73 PluginInfo &BeatMatchPlugin::Initialise(const HostInfo *Host)
74 {
75 return SpiralPlugin::Initialise(Host);
76 }
77
CreateGUI()78 SpiralGUIType *BeatMatchPlugin::CreateGUI()
79 {
80 return new BeatMatchPluginGUI(m_PluginInfo.Width,
81 m_PluginInfo.Height,
82 this,m_AudioCH,m_HostInfo);
83 }
84
Execute()85 void BeatMatchPlugin::Execute()
86 {
87 for (int n=0; n<m_HostInfo->BUFSIZE; n++)
88 {
89 bool Triggered=false;
90 if (GetInput(0,n)>0)
91 {
92 if(!m_Triggered)
93 {
94 m_Triggered=true;
95 Triggered=true;
96 }
97 }
98 else
99 {
100 if (m_Triggered)
101 {
102 m_Triggered=false;
103 Triggered=true;
104 }
105 }
106
107 if (Triggered)
108 {
109 // adjust estimated duration
110 // error = m_BeatTime
111 m_EstimatedDuration-=(int)(m_BeatTime*m_Sensitivity);
112 m_BeatTime=m_EstimatedDuration;
113
114 // push the sync closer
115 int HalfBeat = m_EstimatedDuration/2;
116 if (m_NextBeat<HalfBeat) m_NextBeat-=(int)(HalfBeat*m_Sensitivity);
117 else m_NextBeat+=(int)(HalfBeat*m_Sensitivity);
118 }
119
120 if (m_NextBeat<=0)
121 {
122 m_NextBeat=m_EstimatedDuration;
123 m_OutputLevel=-m_OutputLevel;
124 }
125
126 m_NextBeat--;
127 m_BeatTime--;
128
129 SetOutput(0,n,m_OutputLevel);
130 }
131 }
132
ExecuteCommands()133 void BeatMatchPlugin::ExecuteCommands()
134 {
135 }
136
StreamOut(ostream & s)137 void BeatMatchPlugin::StreamOut(ostream &s)
138 {
139 s<<m_Version<<endl;
140 s<<m_Sensitivity<<" ";
141 }
142
StreamIn(istream & s)143 void BeatMatchPlugin::StreamIn(istream &s)
144 {
145 int version;
146 s>>version;
147 s>>m_Sensitivity;
148 }
149