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Diffstat (limited to 'src/mdaRoundPan.cpp')
| -rw-r--r-- | src/mdaRoundPan.cpp | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/src/mdaRoundPan.cpp b/src/mdaRoundPan.cpp new file mode 100644 index 0000000..d7af4f4 --- /dev/null +++ b/src/mdaRoundPan.cpp @@ -0,0 +1,226 @@ +/* + Copyright 2008-2011 David Robillard <http://drobilla.net> + Copyright 1999-2000 Paul Kellett (Maxim Digital Audio) + + This 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. + + This software 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 this software. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include "mdaRoundPan.h" + +#include <math.h> +#include <float.h> + +AudioEffect *createEffectInstance(audioMasterCallback audioMaster) +{ + return new mdaRoundPan(audioMaster); +} + +mdaRoundPan::mdaRoundPan(audioMasterCallback audioMaster) : AudioEffectX(audioMaster, 1, 2) // programs, parameters + , fParam3(0.0f) + , fParam4(0.0f) +{ + //inits here! + fParam1 = (float)0.5; //pan + fParam2 = (float)0.8; //auto + + //size = 1500; + //bufpos = 0; + //buffer = new float[size]; + //buffer2 = new float[size]; + + setNumInputs(2); + setNumOutputs(2); + setUniqueID("mdaRoundPan"); // identify here + DECLARE_LVZ_DEPRECATED(canMono) (); + canProcessReplacing(); + strcpy(programName, "Round Panner"); + suspend(); // flush buffer + + //calcs here! + phi = 0.0; + dphi = (float)(5.0 / getSampleRate()); +} + +bool mdaRoundPan::getProductString(char* text) { strcpy(text, "MDA RoundPan"); return true; } +bool mdaRoundPan::getVendorString(char* text) { strcpy(text, "mda"); return true; } +bool mdaRoundPan::getEffectName(char* name) { strcpy(name, "RoundPan"); return true; } + +void mdaRoundPan::setParameter(int32_t index, float value) +{ + switch(index) + { + case 0: fParam1 = value; phi = (float)(6.2831853 * (fParam1 - 0.5)); break; + case 1: fParam2 = value; break; + } + //calcs here + if (fParam2>0.55) + { + dphi = (float)(20.0 * (fParam2 - 0.55) / getSampleRate()); + } + else + { + if (fParam2<0.45) + { + dphi = (float)(-20.0 * (0.45 - fParam2) / getSampleRate()); + } + else + { + dphi = 0.0; + } + } +} + +mdaRoundPan::~mdaRoundPan() +{ + //if(buffer) delete buffer; + //if(buffer2) delete buffer2; +} + +void mdaRoundPan::suspend() +{ + //memset(buffer, 0, size * sizeof(float)); + //memset(buffer2, 0, size * sizeof(float)); +} + +void mdaRoundPan::setProgramName(char *name) +{ + strcpy(programName, name); +} + +void mdaRoundPan::getProgramName(char *name) +{ + strcpy(name, programName); +} + +bool mdaRoundPan::getProgramNameIndexed (int32_t category, int32_t index, char* name) +{ + if (index == 0) + { + strcpy(name, programName); + return true; + } + return false; +} + +float mdaRoundPan::getParameter(int32_t index) +{ + float v=0; + + switch(index) + { + case 0: v = fParam1; break; + case 1: v = fParam2; break; + } + return v; +} + +void mdaRoundPan::getParameterName(int32_t index, char *label) +{ + switch(index) + { + case 0: strcpy(label, "Pan"); break; + case 1: strcpy(label, "Auto"); break; + } +} + +#include <stdio.h> +static void int2strng(int32_t value, char *string) { sprintf(string, "%d", value); } + +void mdaRoundPan::getParameterDisplay(int32_t index, char *text) +{ + switch(index) + { + case 0: int2strng((int32_t)(360.0 * (fParam1 - 0.5)), text); break; + case 1: int2strng((int32_t)(57.296 * dphi * getSampleRate()), text); break; + } +} + +void mdaRoundPan::getParameterLabel(int32_t index, char *label) +{ + switch(index) + { + case 0: strcpy(label, "deg"); break; + case 1: strcpy(label, "deg/sec"); break; + } +} + +//-------------------------------------------------------------------------------- +// process + +void mdaRoundPan::process(float **inputs, float **outputs, int32_t sampleFrames) +{ + float *in1 = inputs[0]; + float *in2 = inputs[1]; + float *out1 = outputs[0]; + float *out2 = outputs[1]; + float a, c, d, x=0.5, y=(float)0.7854; + float ph, dph, fourpi=(float)12.566371; + + ph = phi; + dph = dphi; + + --in1; + --in2; + --out1; + --out2; + while(--sampleFrames >= 0) + { + a = x * (*++in1 + *++in2); + + c = out1[1]; + d = out2[1]; //process from here... + + c += (float)(a * -sin((x * ph) - y)); // output + d += (float)(a * sin((x * ph) + y)); + + ph = ph + dph; + + *++out1 = c; + *++out2 = d; + } + if(ph<0.0) ph = ph + fourpi; else if(ph>fourpi) ph = ph - fourpi; + phi = ph; +} + +void mdaRoundPan::processReplacing(float **inputs, float **outputs, int32_t sampleFrames) +{ + float *in1 = inputs[0]; + float *in2 = inputs[1]; + float *out1 = outputs[0]; + float *out2 = outputs[1]; + float a, c, d, x=0.5, y=(float)0.7854; + float ph, dph, fourpi=(float)12.566371; + + ph = phi; + dph = dphi; + + --in1; + --in2; + --out1; + --out2; + while(--sampleFrames >= 0) + { + a = x * (*++in1 + *++in2); //process from here... + + c = (float)(a * -sin((x * ph) - y)); // output + d = (float)(a * sin((x * ph) + y)); + + ph = ph + dph; + + *++out1 = c; + *++out2 = d; + } + if(ph<0.0) ph = ph + fourpi; else if(ph>fourpi) ph = ph - fourpi; + phi = ph; +} |