/[svn]/linuxsampler/trunk/src/engines/gig/EGDecay.h
ViewVC logotype

Annotation of /linuxsampler/trunk/src/engines/gig/EGDecay.h

Parent Directory Parent Directory | Revision Log Revision Log


Revision 53 - (hide annotations) (download) (as text)
Mon Apr 26 17:15:51 2004 UTC (19 years, 11 months ago) by schoenebeck
File MIME type: text/x-c++hdr
File size: 3012 byte(s)
* completely restructured source tree
* implemented multi channel support
* implemented instrument manager, which controls sharing of instruments
  between multiple sampler engines / sampler channels
* created abstract classes 'AudioOutputDevice' and 'MidiInputDevice' for
  convenient implementation of further audio output driver and MIDI input
  driver for LinuxSampler
* implemented following LSCP commands: 'SET CHANNEL MIDI INPUT TYPE',
  'LOAD ENGINE', 'GET CHANNELS', 'ADD CHANNEL', 'REMOVE CHANNEL',
  'SET CHANNEL AUDIO OUTPUT TYPE'
* temporarily removed all command line options
* LSCP server is now launched by default

1 schoenebeck 53 /***************************************************************************
2     * *
3     * LinuxSampler - modular, streaming capable sampler *
4     * *
5     * Copyright (C) 2003 by Benno Senoner and Christian Schoenebeck *
6     * *
7     * This program is free software; you can redistribute it and/or modify *
8     * it under the terms of the GNU General Public License as published by *
9     * the Free Software Foundation; either version 2 of the License, or *
10     * (at your option) any later version. *
11     * *
12     * This program is distributed in the hope that it will be useful, *
13     * but WITHOUT ANY WARRANTY; without even the implied warranty of *
14     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
15     * GNU General Public License for more details. *
16     * *
17     * You should have received a copy of the GNU General Public License *
18     * along with this program; if not, write to the Free Software *
19     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
20     * MA 02111-1307 USA *
21     ***************************************************************************/
22    
23     #ifndef __LS_GIG_EGDECAY_H__
24     #define __LS_GIG_EGDECAY_H__
25    
26     #include "../../common/global.h"
27    
28     #if DEBUG_HEADERS
29     # warning EGDecay.h included
30     #endif // DEBUG_HEADERS
31    
32     #include "../../common/RTMath.h"
33     #include "../common/Event.h"
34     #include "Engine.h"
35    
36     namespace LinuxSampler { namespace gig {
37    
38     /**
39     * Decay Envelope Generator
40     *
41     * Simple Envelope Generator with only one stage: 'Decay'. We currently use
42     * this specific EG only for pitch and thus it's not generalized yet, means
43     * the initial envelope level (given by 'Depth') will raise / drop in
44     * 'DecayTime' seconds to a level of exactly 1.0. If the initial level
45     * ('Depth') is already 1.0, nothing happens. Beside that, the EG just
46     * multiplies it's levels to the synthesis parameter sequence.
47     */
48     class EGDecay {
49     public:
50     EGDecay(gig::Engine* pEngine, Event::destination_t ModulationDestination);
51     void Process(uint Samples);
52     void Trigger(float Depth, double DecayTime, uint Delay);
53     protected:
54     gig::Engine* pEngine;
55     Event::destination_t ModulationDestination;
56     uint TriggerDelay; ///< number of sample points triggering should be delayed
57     float Level;
58     float DecayCoeff;
59     long DecayStepsLeft;
60     };
61    
62     }} // namespace LinuxSampler::gig
63    
64     #endif // __LS_GIG_EGDECAY_H__

  ViewVC Help
Powered by ViewVC