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author | toma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da> | 2009-11-25 17:56:58 +0000 |
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committer | toma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da> | 2009-11-25 17:56:58 +0000 |
commit | e2de64d6f1beb9e492daf5b886e19933c1fa41dd (patch) | |
tree | 9047cf9e6b5c43878d5bf82660adae77ceee097a /arts/modules/synth/synth_fx_cflanger_impl.cc | |
download | tdemultimedia-e2de64d6f1beb9e492daf5b886e19933c1fa41dd.tar.gz tdemultimedia-e2de64d6f1beb9e492daf5b886e19933c1fa41dd.zip |
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923
git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdemultimedia@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
Diffstat (limited to 'arts/modules/synth/synth_fx_cflanger_impl.cc')
-rw-r--r-- | arts/modules/synth/synth_fx_cflanger_impl.cc | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/arts/modules/synth/synth_fx_cflanger_impl.cc b/arts/modules/synth/synth_fx_cflanger_impl.cc new file mode 100644 index 00000000..16910958 --- /dev/null +++ b/arts/modules/synth/synth_fx_cflanger_impl.cc @@ -0,0 +1,96 @@ +/* + + Copyright (C) 2000 Jeff Tranter + Stefan Westerfeld + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. + + */ + +#include <math.h> +#include "artsmodulessynth.h" +#include "stdsynthmodule.h" + +using namespace Arts; + +class Synth_FX_CFLANGER_impl : virtual public Synth_FX_CFLANGER_skel, + virtual public StdSynthModule +{ +protected: + float _mintime; + float _maxtime; + enum { SAMPLINGRATE = 44100, MAXDELAY = 44100 }; + float *dbuffer; + unsigned long dbpos; + float center; + float range; + +public: + Synth_FX_CFLANGER_impl() + { + dbuffer=new float[MAXDELAY]; + } + ~Synth_FX_CFLANGER_impl() + { + delete [] dbuffer; + } + + float mintime() { return _mintime; } + + void mintime(float newMintime) { _mintime = newMintime; } + + float maxtime() { return _maxtime; } + + void maxtime(float newMaxtime) { _maxtime = newMaxtime; } + + void streamInit() + { + center = (_maxtime + _mintime) / 2; + range = _maxtime - center; + for (int i=0; i<MAXDELAY; i++) + dbuffer[i] = 0; + dbpos = 0; + } + + void calculateBlock(unsigned long samples) + { + unsigned long i; + float delay, floor_delay; + long start_pos, end_pos; + float start_val, end_val; + + for(i=0; i<samples; i++) + { + dbuffer[dbpos] = invalue[i]; + // Delaytime i.e. = 35ms + (+/- LFO[-1 bis 1] * 15ms) / 1000 * 44100 + delay = ((center + (lfo[i] * range)) / 1000.0) * (float) SAMPLINGRATE; + floor_delay = floor(delay); + start_pos = dbpos - (long)(floor_delay); + end_pos = start_pos-1; + if (start_pos < 0) start_pos += MAXDELAY; // wrapping exception + if (end_pos < 0) end_pos += MAXDELAY; + start_val = dbuffer[start_pos]; + end_val = dbuffer[end_pos]; + outvalue[i] = start_val + ((delay - floor_delay) * (end_val - start_val)); + dbpos++; + if (dbpos == MAXDELAY) dbpos = 0; + } + } +}; + +REGISTER_IMPLEMENTATION(Synth_FX_CFLANGER_impl); |