/[svn]/linuxsampler/trunk/src/modulationsystem.cpp
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Contents of /linuxsampler/trunk/src/modulationsystem.cpp

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Revision 31 - (show annotations) (download)
Sun Jan 18 20:31:31 2004 UTC (16 years, 1 month ago) by schoenebeck
File size: 2862 byte(s)
* Added JACK support: Audio rendering process is now callback based and
  independant of used audio output system. Interfaces to other audio output
  systems can be added by creating a class derived from abstract base class
  'AudioIO' and embedding the new class into linuxsampler.cpp.
* src/audiothread.cpp: applied patch from Vladimir Senkov which fixes
  hanging notes in conjunction with the sustain pedal

1 /***************************************************************************
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 #include "modulationsystem.h"
24
25 float** ModulationSystem::pDestinationParameter = NULL;
26 uint ModulationSystem::uiSampleRate;
27 uint ModulationSystem::uiMaxSamplesPerCycle;
28
29 void ModulationSystem::Initialize(uint SampleRate, uint MaxSamplesPerCycle) {
30 ModulationSystem::uiMaxSamplesPerCycle = MaxSamplesPerCycle;
31 ModulationSystem::uiSampleRate = SampleRate;
32 if (!pDestinationParameter) {
33 pDestinationParameter = new float*[destination_count];
34 pDestinationParameter[0] = new float[destination_count * MaxSamplesPerCycle];
35 for (int i = 1; i < destination_count; i++) {
36 pDestinationParameter[i] = pDestinationParameter[i - 1] + MaxSamplesPerCycle;
37 }
38 }
39 }
40
41 void ModulationSystem::Close() {
42 if (pDestinationParameter) {
43 delete[] ModulationSystem::pDestinationParameter[0];
44 delete[] ModulationSystem::pDestinationParameter;
45 }
46 }
47
48 /**
49 * Initialize the parameter sequence for the modulation destination given by
50 * by 'dst' with the constant value given by val.
51 */
52 void ModulationSystem::ResetDestinationParameter(ModulationSystem::destination_t dst, float val) {
53 for (int i = 0; i < uiMaxSamplesPerCycle; i++) pDestinationParameter[dst][i] = val;
54 }

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