PokittoLib

Diff: POKITTO_LIBS/Synth/Synth_wavefuncs.cpp

Revision:

30:796f9611d2ac

Parent:

29:9467921dec10

Child:

31:f4b9b85c7b62

--- a/POKITTO_LIBS/Synth/Synth_wavefuncs.cpp	Mon Jan 29 12:29:45 2018 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,108 +0,0 @@
-/**************************************************************************/
-/*!
-    @file     Synth_wavefuncs.cpp
-    @author   Jonne Valola
-
-    @section LICENSE
-
-    Software License Agreement (BSD License)
-
-    Copyright (c) 2016, Jonne Valola
-    All rights reserved.
-
-    Redistribution and use in source and binary forms, with or without
-    modification, are permitted provided that the following conditions are met:
-    1. Redistributions of source code must retain the above copyright
-    notice, this list of conditions and the following disclaimer.
-    2. Redistributions in binary form must reproduce the above copyright
-    notice, this list of conditions and the following disclaimer in the
-    documentation and/or other materials provided with the distribution.
-    3. Neither the name of the copyright holders nor the
-    names of its contributors may be used to endorse or promote products
-    derived from this software without specific prior written permission.
-
-    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
-    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
-    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-/**************************************************************************/
-
-#include "Synth.h"
-
-uint16_t noiseval, noiseval2;
-
-void waveoff(OSC* o); void sqwave(OSC* o); void sawwave(OSC* o); void triwave(OSC* o); void noise(OSC* o); void tonenoise(OSC* o); void sample(OSC* o);
-void noADSR(OSC* o); void attackFunc(OSC* o); void decayFunc(OSC* o); void releaseFunc(OSC* o);
-void mix1(); void mix2(); void mix3(); void updateEnvelopes();
-
-waveFunction Farr []  = {waveoff, sqwave, sawwave, triwave, noise, tonenoise};
-envFunction Earr [] = {noADSR, attackFunc, decayFunc, releaseFunc};
-mixFunction Marr [] = {updateEnvelopes,mix3,mix2,mix1}; // counts down
-mixFunction HWMarr [] = {updateEnvelopes,mix3,mix2,mix1}; // counts down
-
-/** SOUND FUNCTIONS **/
-
-void waveoff(OSC* o){
-  o->output = 0;
-}
-
-void sqwave(OSC* o){
-// square. If bit 16 set, its 2nd half of cycle and then output. if not, silence.
- if (o->count & 0x8000) o->output = 0;
- else  o->output = 0xFFFF;
-}
-
-void sawwave(OSC* o){
- // saw is just twice the count, so it happens 2 times in a cycle.
- o->output = o->count << 1; // simple, eh ?
-}
-
-void triwave(OSC* o){
-    // exploit the fact that above 0x7FFF bit 16 will be set (ie. when on second side of cycle)
-    if (o->count & 0x8000) o->output = (~o->count) << 1; // counts down because complement goes other way
-    else o->output = o->count << 1; // count up on first side of cycle
-}
-
-void noise(OSC* o){
-  // Standard libc random gives 10-12 fps
-  // Xorshift16 gives 32-39 fps
-  // Xorshift8 gives
-
-  if (o->count > 0x8000) {
-    o->output = noiseval2;
-    //noiseval = random(0,0xFFFF);
-    noiseval = xorshift16();
-    //noiseval = xorshift8()*256;
-  }
-  else  {
-    o->output = noiseval;
-    //noiseval2 = random(0,0xFFFF);
-    noiseval2 = xorshift16();
-    //noiseval2 = xorshift8()*256;
-  }
-}
-
-void tonenoise(OSC* o){
-  // square. If bit 16 set, its 2nd half of cycle and then output. if not, silence.
- if (o->count & 0x8000) o->output = (xorshift16()>>6); //was 0
- else  o->output = (xorshift16()>>1) + 0x4000;//random(0,0xFFFF);
-}
-
-void sample(OSC* o) {
-
-    /*if (o->samplepos > o->samplelength ) o->samplepos = 0;
-
-    if (o->count > o->wcycle) {
-        o->count=0;
-        if (o->output) o->output = 0;
-        //else o->output = o->output=pgm_read_byte((uint32_t)(sfxBike) + o->inccount);
-    }*/
-}
-