spinal cord / PokittoLib

PokittoLib is the library needed for programming the Pokitto DIY game console (www.pokitto.com)

Dependents:   Sensitive

Fork of PokittoLib by Jonne Valola

POKITTO_LIBS/Synth/Synth_envfuncs.cpp@15:0bbe8f6fae32, 2017-10-18 (annotated)

Committer:
spinal
Date:
Wed Oct 18 14:47:54 2017 +0000
Revision:
15:0bbe8f6fae32
Parent:
0:e8b8f36b4505 
direct lcd stuff used by sensitive

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Pokitto 0:e8b8f36b4505 1 /**************************************************************************/
Pokitto 0:e8b8f36b4505 2 /*!
Pokitto 0:e8b8f36b4505 3 @file Synth_envfuncs.cpp
Pokitto 0:e8b8f36b4505 4 @author Jonne Valola
Pokitto 0:e8b8f36b4505 5
Pokitto 0:e8b8f36b4505 6 @section LICENSE
Pokitto 0:e8b8f36b4505 7
Pokitto 0:e8b8f36b4505 8 Software License Agreement (BSD License)
Pokitto 0:e8b8f36b4505 9
Pokitto 0:e8b8f36b4505 10 Copyright (c) 2016, Jonne Valola
Pokitto 0:e8b8f36b4505 11 All rights reserved.
Pokitto 0:e8b8f36b4505 12
Pokitto 0:e8b8f36b4505 13 Redistribution and use in source and binary forms, with or without
Pokitto 0:e8b8f36b4505 14 modification, are permitted provided that the following conditions are met:
Pokitto 0:e8b8f36b4505 15 1. Redistributions of source code must retain the above copyright
Pokitto 0:e8b8f36b4505 16 notice, this list of conditions and the following disclaimer.
Pokitto 0:e8b8f36b4505 17 2. Redistributions in binary form must reproduce the above copyright
Pokitto 0:e8b8f36b4505 18 notice, this list of conditions and the following disclaimer in the
Pokitto 0:e8b8f36b4505 19 documentation and/or other materials provided with the distribution.
Pokitto 0:e8b8f36b4505 20 3. Neither the name of the copyright holders nor the
Pokitto 0:e8b8f36b4505 21 names of its contributors may be used to endorse or promote products
Pokitto 0:e8b8f36b4505 22 derived from this software without specific prior written permission.
Pokitto 0:e8b8f36b4505 23
Pokitto 0:e8b8f36b4505 24 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
Pokitto 0:e8b8f36b4505 25 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
Pokitto 0:e8b8f36b4505 26 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
Pokitto 0:e8b8f36b4505 27 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
Pokitto 0:e8b8f36b4505 28 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
Pokitto 0:e8b8f36b4505 29 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
Pokitto 0:e8b8f36b4505 30 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
Pokitto 0:e8b8f36b4505 31 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
Pokitto 0:e8b8f36b4505 32 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
Pokitto 0:e8b8f36b4505 33 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Pokitto 0:e8b8f36b4505 34 */
Pokitto 0:e8b8f36b4505 35 /**************************************************************************/
Pokitto 0:e8b8f36b4505 36
Pokitto 0:e8b8f36b4505 37 #include "Synth.h"
Pokitto 0:e8b8f36b4505 38
Pokitto 0:e8b8f36b4505 39 /** ENVELOPE FUNCTIONS **/
Pokitto 0:e8b8f36b4505 40
Pokitto 0:e8b8f36b4505 41 void noADSR(OSC* o){
Pokitto 0:e8b8f36b4505 42 }
Pokitto 0:e8b8f36b4505 43
Pokitto 0:e8b8f36b4505 44 void attackFunc(OSC* o){
Pokitto 0:e8b8f36b4505 45 if (o->adsrvol >= o->vol) {
Pokitto 0:e8b8f36b4505 46 if (o->decay) {
Pokitto 0:e8b8f36b4505 47 o->adsrvol = o->vol;
Pokitto 0:e8b8f36b4505 48 o->adsrphase = 2;
Pokitto 0:e8b8f36b4505 49 } else {
Pokitto 0:e8b8f36b4505 50 o->adsrvol = o->sustain;
Pokitto 0:e8b8f36b4505 51 o->adsrphase = 3;
Pokitto 0:e8b8f36b4505 52 }
Pokitto 0:e8b8f36b4505 53 return;
Pokitto 0:e8b8f36b4505 54 }
Pokitto 0:e8b8f36b4505 55 o->adsrvol += o->attack;
Pokitto 0:e8b8f36b4505 56 }
Pokitto 0:e8b8f36b4505 57
Pokitto 0:e8b8f36b4505 58 void decayFunc(OSC* o){
Pokitto 0:e8b8f36b4505 59 if (o->adsrvol >= o->sustain + o->decay) {
Pokitto 0:e8b8f36b4505 60 o->adsrvol -= o->decay;
Pokitto 0:e8b8f36b4505 61 return;
Pokitto 0:e8b8f36b4505 62 } else {
Pokitto 0:e8b8f36b4505 63 o->adsrvol = o->sustain;
Pokitto 0:e8b8f36b4505 64 o->adsrphase = 3;
Pokitto 0:e8b8f36b4505 65 }
Pokitto 0:e8b8f36b4505 66 }
Pokitto 0:e8b8f36b4505 67
Pokitto 0:e8b8f36b4505 68 void releaseFunc(OSC* o){
Pokitto 0:e8b8f36b4505 69 if (o->adsrvol > o->release) o->adsrvol -= o->release;
Pokitto 0:e8b8f36b4505 70 else o->adsrvol = 0;
Pokitto 0:e8b8f36b4505 71 if (!o->adsrvol) { // we have hit zero volume level
Pokitto 0:e8b8f36b4505 72 if (o->loop) {
Pokitto 0:e8b8f36b4505 73 if (o->attack) {
Pokitto 0:e8b8f36b4505 74 o->adsrvol = 0;
Pokitto 0:e8b8f36b4505 75 } else {
Pokitto 0:e8b8f36b4505 76 o->adsrvol = o->vol;
Pokitto 0:e8b8f36b4505 77 }
Pokitto 0:e8b8f36b4505 78 if (o->echo) o->echodiv++;
Pokitto 0:e8b8f36b4505 79 o->adsrphase = 1;
Pokitto 0:e8b8f36b4505 80 return;
Pokitto 0:e8b8f36b4505 81 }
Pokitto 0:e8b8f36b4505 82 else {
Pokitto 0:e8b8f36b4505 83 o->adsrphase = 0;
Pokitto 0:e8b8f36b4505 84 o->adsrvol = 0;
Pokitto 0:e8b8f36b4505 85 return;
Pokitto 0:e8b8f36b4505 86 }
Pokitto 0:e8b8f36b4505 87 }
Pokitto 0:e8b8f36b4505 88 }
Pokitto 0:e8b8f36b4505 89
Pokitto 0:e8b8f36b4505 90
Pokitto 0:e8b8f36b4505 91
Pokitto 0:e8b8f36b4505 92