1 /*  SpiralSynth
2  *  Copyleft (C) 2000 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 
19 #include <math.h>
20 #include "NoteTable.h"
21 #include "SpiralInfo.h"
22 
23 #ifndef ENV
24 #define ENV
25 
26 
27 class Envelope
28 {
29 public:
30 	Envelope();
31 	~Envelope();
32 
Trigger(int V)33 	void Trigger(int V) {m_t[V]=0.0f; m_Trigger[V]=true;}
UnTrigger(int V)34 	void UnTrigger(int V) {m_Trigger[V]=false;}
35 	void GetOutput(int V, short *data);
36 	void Zero(short *data);
SetAttack(float s)37 	void SetAttack(float s) {m_Attack=s;}
SetDecay(float s)38 	void SetDecay(float s) {m_Decay=s;}
SetSustain(float s)39 	void SetSustain(float s) {m_Sustain=s;}
SetRelease(float s)40 	void SetRelease(float s) {m_Release=s;}
SetVolume(float s)41 	void SetVolume(float s) {m_Volume=s;}
GetAttack()42 	float GetAttack() {return m_Attack;}
GetDecay()43 	float GetDecay() {return m_Decay;}
GetSustain()44 	float GetSustain() {return m_Sustain;}
GetRelease()45 	float GetRelease() {return m_Release;}
GetVolume()46 	float GetVolume() {return m_Volume;}
47 	void Randomise();
48 
49 private:
50 
51 	// Voice specific parameters
52 	bool  *m_Trigger;
53 	double *m_t;
54 
55 	// Common voice parameters
56 	float m_Attack;
57 	float m_Decay;
58 	float m_Sustain;
59 	float m_Release;
60 	float m_Volume;
61 	double m_SampleTime;
62 
63 	friend istream &operator>>(istream &s, Envelope &o);
64 	friend ostream &operator<<(ostream &s, Envelope &o);
65 };
66 
67 istream &operator>>(istream &s, Envelope &o);
68 ostream &operator<<(ostream &s, Envelope &o);
69 
70 #endif
71