Marsyas
0.6.0-alpha
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00001 /* 00002 ** Copyright (C) 2010 Stefaan Lippens 00003 ** 00004 ** This program is free software; you can redistribute it and/or modify 00005 ** it under the terms of the GNU General Public License as published by 00006 ** the Free Software Foundation; either version 2 of the License, or 00007 ** (at your option) any later version. 00008 ** 00009 ** This program is distributed in the hope that it will be useful, 00010 ** but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00012 ** GNU General Public License for more details. 00013 ** 00014 ** You should have received a copy of the GNU General Public License 00015 ** along with this program; if not, write to the Free Software 00016 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 00017 */ 00018 00019 #include "SliceShuffle.h" 00020 #include "../common_source.h" 00021 00022 using namespace std; 00023 using namespace Marsyas; 00024 00025 SliceShuffle::SliceShuffle(mrs_string name) : MarSystem("SliceShuffle", name) 00026 { 00028 addControls(); 00029 } 00030 00031 SliceShuffle::SliceShuffle(const SliceShuffle& a) : MarSystem(a) 00032 { 00035 ctrl_bufferSize_ = getControl("mrs_natural/bufferSize"); 00036 } 00037 00038 00039 SliceShuffle::~SliceShuffle() 00040 { 00041 } 00042 00043 MarSystem* 00044 SliceShuffle::clone() const 00045 { 00046 return new SliceShuffle(*this); 00047 } 00048 00049 void 00050 SliceShuffle::addControls() 00051 { 00053 00054 addControl("mrs_natural/bufferSize", 10, ctrl_bufferSize_); 00055 setctrlState("mrs_natural/bufferSize", true); 00056 } 00057 00058 void 00059 SliceShuffle::myUpdate(MarControlPtr sender) 00060 { 00061 MRSDIAG("SliceShuffle.cpp - SliceShuffle:myUpdate"); 00062 00064 MarSystem::myUpdate(sender); 00065 00066 // Cache the buffer size 00067 bufferSize_ = getControl("mrs_natural/bufferSize")->to<mrs_natural>(); 00068 00069 // Allocate the slice buffer. 00070 sliceBuffer_.stretch(inObservations_, inSamples_ * bufferSize_); 00071 sliceBuffer_.setval(0.0); 00072 } 00073 00074 void 00075 SliceShuffle::myProcess(realvec& in, realvec& out) 00076 { 00077 mrs_natural t,o; 00079 mrs_natural slice_t = (rand() % bufferSize_) * inSamples_; 00080 00082 for (o = 0; o < inObservations_; o++) 00083 { 00084 for (t = 0; t < inSamples_; t++) 00085 { 00086 out(o, t) = sliceBuffer_(o, slice_t + t); 00087 sliceBuffer_(o, slice_t + t) = in(o, t); 00088 } 00089 } 00090 }