Diff: pitch.h

Revision:

0:5a419ba2726d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pitch.h	Tue Oct 28 12:19:22 2014 +0000
@@ -0,0 +1,58 @@
+/*
+Copyright 2013 Paul Soulsby www.soulsbysynths.com
+    This file is part of Atmegatron.
+
+    Atmegatron is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Atmegatron 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with Atmegatron.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __PITCH_H__
+#define __PITCH_H__
+
+
+//These constants are used to define the MAXIMUM amount the env can effect the pitch.
+//The default max for env is: 
+//********multiplier = 4***********
+#define PITCH_ENVMAX 1.386294361119891f  //ln(multiplier)
+#define PITCH_ENVMULT 64                 //multipler used for calculating lookup table  (256 / multiplier)  
+#define PITCH_ENVBS 6UL                  //bitshift amount when multiplying pitch by pitch env amt.  log2(PITCH_MULT)
+
+//These constants are used to define the MAXIMUM amount the lfo can effect the pitch.
+//The default max for lfo is: 
+//********multiplier = 2 (1 octave)***********
+#define PITCH_LFOMAX 0.693147180559945f  //ln(multiplier)
+#define PITCH_LFOMULT 128                //multipler used for calculating lookup table  (256 / multiplier)  
+#define PITCH_LFOBS 7UL                  //bitshift amount when multiplying pitch by pitch lfo amt.  log2(PITCH_MULT)
+
+
+void Pitch_Let_NextFreq(unsigned int newfreq);
+unsigned int Pitch_Get_NextFreq(void);
+void Pitch_Let_Porta(int newporta);
+int Pitch_Get_Porta(void);
+void Pitch_ResetPorta(void);
+void Pitch_RefreshPortaTicks(void);
+unsigned long Pitch_Get_FreqCalc(void);
+boolean Pitch_Get_PitchChanged(void);
+void Pitch_Let_PropPorta(boolean newprop);
+boolean Pitch_Get_PropPorta(void);
+void Pitch_Process(void);
+void Pitch_Let_LFOAmt(byte newamt);
+byte Pitch_Get_LFOAmt(void);
+byte Pitch_Get_LFOGain(void);
+void Pitch_Let_FenvAmt(byte newamt);
+byte Pitch_Get_FenvAmt(void);
+byte Pitch_Get_FenvGain(void);
+byte Pitch_Get_MIDIPbendGain(void);
+
+
+#endif // __PITCH_H__