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-rw-r--r--arts/modules/synth/synth_envelope_adsr_impl.cc121
1 files changed, 0 insertions, 121 deletions
diff --git a/arts/modules/synth/synth_envelope_adsr_impl.cc b/arts/modules/synth/synth_envelope_adsr_impl.cc
deleted file mode 100644
index e6f47220..00000000
--- a/arts/modules/synth/synth_envelope_adsr_impl.cc
+++ /dev/null
@@ -1,121 +0,0 @@
- /*
-
- Copyright (C) 2000 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., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA.
-
- */
-
-#include "artsmodulessynth.h"
-#include "debug.h"
-#include "stdsynthmodule.h"
-
-using namespace Arts;
-
-class Synth_ENVELOPE_ADSR_impl : virtual public Synth_ENVELOPE_ADSR_skel,
- virtual public StdSynthModule
-{
-protected:
- enum { NOOUT, ATTACK, SUSTAIN, DECAY, RELEASE } currentphase;
- float level,increment,decrement;
-public:
- void streamInit()
- {
- currentphase = NOOUT;
- level = 0;
- }
- void calculateBlock(unsigned long samples);
-};
-
-void Synth_ENVELOPE_ADSR_impl::calculateBlock(unsigned long samples)
-{
- /* FIXME:
- * should be rewritten as generic envelope, would certainly
- * be faster & more flexible
- */
- unsigned long i;
-
- for(i=0;i<samples;i++)
- {
- done[i] = 0;
- if(active[i] < 0.5)
- {
- if(currentphase == NOOUT)
- {
- level = 0;
- done[i] = 1;
- }
- else
- {
- if(currentphase != RELEASE) {
- artsdebug("ADSR: entering release phase\n");
- currentphase = RELEASE;
- decrement = level / (release[i] * samplingRateFloat);
- }
- level -= decrement;
- if(level <= 0)
- {
- level = 0;
- currentphase = NOOUT;
- }
- }
- }
- else
- {
- switch(currentphase)
- {
- //quickly kill the note that is still there (channel busy ;)
- case RELEASE:
- level -= 1/200;
- if(level <= 0) {
- currentphase = NOOUT;
- level = 0;
- }
- break;
- case NOOUT:
- artsdebug("ADSR: entering attack\n");
- increment = 1 / (attack[i] * samplingRateFloat);
- currentphase = ATTACK;
- break;
- case ATTACK:
- level += increment;
- if (level >= 1)
- {
- level = 1;
- currentphase = DECAY;
- decrement = (1-sustain[i]) /
- (decay[i] * samplingRateFloat);
- }
- break;
- case DECAY:
- level -= decrement;
- if (level <= sustain[i])
- {
- level = sustain[i];
- currentphase = SUSTAIN;
- }
- break;
- case SUSTAIN:
- level = sustain[i];
- break;
- }
- }
- outvalue[i] = invalue[i] * level;
- }
-}
-
-REGISTER_IMPLEMENTATION(Synth_ENVELOPE_ADSR_impl);