/* Copyright 2008-2011 David Robillard 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 . */ #include "mdaAmbience.h" #include #include #include AudioEffect *createEffectInstance(audioMasterCallback audioMaster) { return new mdaAmbience(audioMaster); } mdaAmbience::mdaAmbience(audioMasterCallback audioMaster) : AudioEffectX(audioMaster, 1, 4) // programs, parameters { //inits here! fParam0 = 0.7f; //size fParam1 = 0.7f; //hf fParam2 = 0.9f; //mix fParam3 = 0.5f; //output size = 0; buf1 = new float[1024]; buf2 = new float[1024]; buf3 = new float[1024]; buf4 = new float[1024]; fil = 0.0f; den = pos=0; setNumInputs(2); setNumOutputs(2); setUniqueID("mdaAmb"); // identify here DECLARE_LVZ_DEPRECATED(canMono) (); canProcessReplacing(); strcpy(programName, "Small Space Ambience"); suspend(); // flush buffer setParameter(0, 0.7f); //go and set initial values! } void mdaAmbience::setParameter(int32_t index, float value) { float tmp; switch(index) { case 0: fParam0 = value; break; case 1: fParam1 = value; break; case 2: fParam2 = value; break; case 3: fParam3 = value; break; } //calcs here fbak = 0.8f; damp = 0.05f + 0.9f * fParam1; tmp = (float)pow(10.0f, 2.0f * fParam3 - 1.0f); dry = tmp - fParam2 * fParam2 * tmp; wet = (0.4f + 0.4f) * fParam2 * tmp; tmp = 0.025f + 2.665f * fParam0; if(size!=tmp) rdy=0; //need to flush buffer size = tmp; } mdaAmbience::~mdaAmbience() { if(buf1) delete [] buf1; if(buf2) delete [] buf2; if(buf3) delete [] buf3; if(buf4) delete [] buf4; } bool mdaAmbience::getProductString(char* text) { strcpy(text, "MDA Ambience"); return true; } bool mdaAmbience::getVendorString(char* text) { strcpy(text, "mda"); return true; } bool mdaAmbience::getEffectName(char* name) { strcpy(name, "Ambience"); return true; } void mdaAmbience::suspend() { memset(buf1, 0, 1024 * sizeof(float)); memset(buf2, 0, 1024 * sizeof(float)); memset(buf3, 0, 1024 * sizeof(float)); memset(buf4, 0, 1024 * sizeof(float)); rdy = 1; } void mdaAmbience::setProgramName(char *name) { strcpy(programName, name); } void mdaAmbience::getProgramName(char *name) { strcpy(name, programName); } bool mdaAmbience::getProgramNameIndexed (int32_t category, int32_t index, char* name) { if (index == 0) { strcpy(name, programName); return true; } return false; } float mdaAmbience::getParameter(int32_t index) { float v=0; switch(index) { case 0: v = fParam0; break; case 1: v = fParam1; break; case 2: v = fParam2; break; case 3: v = fParam3; break; } return v; } void mdaAmbience::getParameterName(int32_t index, char *label) { switch(index) { case 0: strcpy(label, "Size"); break; case 1: strcpy(label, "HF Damp"); break; case 2: strcpy(label, "Mix"); break; case 3: strcpy(label, "Output"); break; } } void mdaAmbience::getParameterDisplay(int32_t index, char *text) { switch(index) { case 0: sprintf(text, "%.0f", 10.0f * fParam0); break; case 1: sprintf(text, "%.0f", 100.0f * fParam1); break; case 2: sprintf(text, "%.0f", 100.0f * fParam2); break; case 3: sprintf(text, "%.0f", 40.0f * fParam3 - 20.0f); break; } } void mdaAmbience::getParameterLabel(int32_t index, char *label) { switch(index) { case 0: strcpy(label, "m"); break; case 1: strcpy(label, "%"); break; case 2: strcpy(label, "%"); break; case 3: strcpy(label, "dB"); break; } } //-------------------------------------------------------------------------------- // process void mdaAmbience::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, b, c, d, r; float t, f=fil, fb=fbak, dmp=damp, y=dry, w=wet; int32_t p=pos, d1, d2, d3, d4; if(rdy==0) suspend(); d1 = (p + (int32_t)(107 * size)) & 1023; d2 = (p + (int32_t)(142 * size)) & 1023; d3 = (p + (int32_t)(277 * size)) & 1023; d4 = (p + (int32_t)(379 * size)) & 1023; --in1; --in2; --out1; --out2; while(--sampleFrames >= 0) { a = *++in1; b = *++in2; c = out1[1]; d = out2[1]; //process from here... f += dmp * (w * (a + b) - f); //HF damping r = f; t = *(buf1 + p); r -= fb * t; *(buf1 + d1) = r; //allpass r += t; t = *(buf2 + p); r -= fb * t; *(buf2 + d2) = r; //allpass r += t; t = *(buf3 + p); r -= fb * t; *(buf3 + d3) = r; //allpass r += t; c += y * a + r - f; //left output t = *(buf4 + p); r -= fb * t; *(buf4 + d4) = r; //allpass r += t; d += y * b + r - f; //right output ++p &= 1023; ++d1 &= 1023; ++d2 &= 1023; ++d3 &= 1023; ++d4 &= 1023; *++out1 = c; *++out2 = d; } pos=p; if(fabs(f)>1.0e-10) { fil=f; den=0; } //catch denormals else { fil=0.0f; if(den==0) { den=1; suspend(); } } } void mdaAmbience::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, b, r; float t, f=fil, fb=fbak, dmp=damp, y=dry, w=wet; int32_t p=pos, d1, d2, d3, d4; if(rdy==0) suspend(); d1 = (p + (int32_t)(107 * size)) & 1023; d2 = (p + (int32_t)(142 * size)) & 1023; d3 = (p + (int32_t)(277 * size)) & 1023; d4 = (p + (int32_t)(379 * size)) & 1023; --in1; --in2; --out1; --out2; while(--sampleFrames >= 0) { a = *++in1; b = *++in2; f += dmp * (w * (a + b) - f); //HF damping r = f; t = *(buf1 + p); r -= fb * t; *(buf1 + d1) = r; //allpass r += t; t = *(buf2 + p); r -= fb * t; *(buf2 + d2) = r; //allpass r += t; t = *(buf3 + p); r -= fb * t; *(buf3 + d3) = r; //allpass r += t; a = y * a + r - f; //left output t = *(buf4 + p); r -= fb * t; *(buf4 + d4) = r; //allpass r += t; b = y * b + r - f; //right output ++p &= 1023; ++d1 &= 1023; ++d2 &= 1023; ++d3 &= 1023; ++d4 &= 1023; *++out1 = a; *++out2 = b; } pos=p; if(fabs(f)>1.0e-10) { fil=f; den=0; } //catch denormals else { fil=0.0f; if(den==0) { den=1; suspend(); } } }