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rmsbuddy-vst.cpp
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rmsbuddy-vst.cpp
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/*---------------------- by Sophia Poirier ][ June 2001 ---------------------*/
#include "rmsbuddy-vst.h"
#include "rmsbuddyeditor-vst.h"
#include <stdio.h>
#include <math.h>
//-----------------------------------------------------------------------------
// initializations & such
RMSbuddy::RMSbuddy(audioMasterCallback audioMaster)
: AudioEffectX(audioMaster, 0, 0) // no programs, no parameters
{
setNumInputs(2); // stereo in
setNumOutputs(2); // stereo out
setUniqueID(RMS_BUDDY_PLUGIN_ID); // identify
canMono(); // it's okay to feed both inputs with the same signal
canProcessReplacing(); // supports both accumulating and replacing output
resume();
editor = new RMSbuddyEditor(this);
}
//-----------------------------------------------------------------------------------------
RMSbuddy::~RMSbuddy()
{
// nud
}
//-----------------------------------------------------------------------------------------
// this gets called when the plugin is activated
void RMSbuddy::resume()
{
// reset all of these things
totalSamples = 0;
totalSquaredCollection1 = totalSquaredCollection2 = 0.0f;
leftContinualRMS = rightContinualRMS = 0.0f;
leftAverageRMS = rightAverageRMS = 0.0f;
leftAbsolutePeak = rightAbsolutePeak = 0.0f;
leftContinualPeak = rightContinualPeak = 0.0f;
resetGUIcounters();
}
//-----------------------------------------------------------------------------
// Destroy FX infos
bool RMSbuddy::getEffectName(char *name) {
strcpy(name, "RMS Buddy"); // name max 32 char
return true; }
long RMSbuddy::getVendorVersion() {
return RMS_BUDDY_VERSION; }
bool RMSbuddy::getErrorText(char *text) {
strcpy(text, "I've stopped counting."); // max 256 char
return true; }
bool RMSbuddy::getVendorString(char *text) {
strcpy(text, "Destroy FX"); // a string identifying the vendor (max 64 char)
return true; }
bool RMSbuddy::getProductString(char *text) {
// a string identifying the product name (max 64 char)
strcpy(text, PLUGIN_COLLECTION_NAME);
return true; }
//------------------------------------------------------------------------
bool RMSbuddy::getInputProperties(long index, VstPinProperties* properties)
{
if ( (index >= 0) && (index < 2) )
{
sprintf(properties->label, "RMS Buddy input %ld", index+1);
sprintf(properties->shortLabel, "in %ld", index+1);
properties->flags = kVstPinIsStereo | kVstPinIsActive;
return true;
}
return false;
}
//------------------------------------------------------------------------
bool RMSbuddy::getOutputProperties(long index, VstPinProperties* properties)
{
if ( (index >= 0) && (index < 2) )
{
sprintf (properties->label, "RMS Buddy output %ld", index+1);
sprintf (properties->shortLabel, "out %ld", index+1);
properties->flags = kVstPinIsStereo | kVstPinIsActive;
return true;
}
return false;
}
//-----------------------------------------------------------------------------------------
void RMSbuddy::process(float **inputs, float **outputs, long sampleFrames)
{
processaudio(inputs, outputs, sampleFrames, false);
}
//-----------------------------------------------------------------------------------------
void RMSbuddy::processReplacing(float **inputs, float **outputs, long sampleFrames)
{
processaudio(inputs, outputs, sampleFrames, true);
}
//-----------------------------------------------------------------------------------------
void RMSbuddy::processaudio(float **inputs, float **outputs, long sampleFrames, bool replacing)
{
long samplecount;
leftContinualRMS = rightContinualRMS = 0.0f;
leftContinualPeak = rightContinualPeak = 0.0f;
for (samplecount = 0; samplecount < sampleFrames; samplecount++)
{
if (replacing)
outputs[0][samplecount] = inputs[0][samplecount];
else
outputs[0][samplecount] += inputs[0][samplecount];
float absInputValue = fabsf(inputs[0][samplecount]);
leftContinualRMS += absInputValue * absInputValue;
if (absInputValue > leftContinualPeak)
leftContinualPeak = absInputValue;
}
for (samplecount = 0; samplecount < sampleFrames; samplecount++)
{
if (replacing)
outputs[1][samplecount] = inputs[1][samplecount];
else
outputs[1][samplecount] += inputs[1][samplecount];
float absInputValue = fabsf(inputs[1][samplecount]);
rightContinualRMS += absInputValue * absInputValue;
if (absInputValue > rightContinualPeak)
rightContinualPeak = absInputValue;
}
totalSamples += sampleFrames;
totalSquaredCollection1 += leftContinualRMS;
totalSquaredCollection2 += rightContinualRMS;
leftAverageRMS = sqrtf(totalSquaredCollection1 / (float)totalSamples);
rightAverageRMS = sqrtf(totalSquaredCollection2 / (float)totalSamples);
// update absolute peak values
if (leftContinualPeak > leftAbsolutePeak)
leftAbsolutePeak = leftContinualPeak;
if (rightContinualPeak > rightAbsolutePeak)
rightAbsolutePeak = rightContinualPeak;
// increment the RMS informations for the GUI displays
GUIsamplesCounter += sampleFrames;
GUIleftContinualRMS += leftContinualRMS;
GUIrightContinualRMS += rightContinualRMS;
// update the GUI continual peak values
if (leftContinualPeak > GUIleftContinualPeak)
GUIleftContinualPeak = leftContinualPeak;
if (rightContinualPeak > GUIrightContinualPeak)
GUIrightContinualPeak = rightContinualPeak;
}
//-----------------------------------------------------------------------------------------
void RMSbuddy::resetGUIcounters()
{
GUIsamplesCounter = 0;
GUIleftContinualRMS = GUIrightContinualRMS = 0.0f;
GUIleftContinualPeak = GUIrightContinualPeak = 0.0f;
}
//-----------------------------------------------------------------------------------------
// this tells the host the plugin can do, which is nothing special in this case
long RMSbuddy::canDo(char* text)
{
if (strcmp(text, "plugAsChannelInsert") == 0)
return 1;
if (strcmp(text, "plugAsSend") == 0)
return 1;
if (strcmp(text, "mixDryWet") == 0)
return 1;
if (strcmp(text, "1in1out") == 0)
return 1;
if (strcmp(text, "1in2out") == 0)
return 1;
if (strcmp(text, "2in2out") == 0)
return 1;
return -1; // explicitly can't do; 0 => don't know
}
//-----------------------------------------------------------------------------
// main() |
//-----------------------------------------------------------------------------
// prototype of the export function main
#if BEOS
#define main main_plugin
extern "C" __declspec(dllexport) AEffect *main_plugin(audioMasterCallback audioMaster);
#elif MACX
#define main main_macho
extern "C" AEffect *main_macho(audioMasterCallback audioMaster);
#else
AEffect *main(audioMasterCallback audioMaster);
#endif
AEffect *main(audioMasterCallback audioMaster)
{
// get vst version
if ( !audioMaster(0, audioMasterVersion, 0, 0, 0, 0) )
return NULL; // old version
AudioEffect *effect = new RMSbuddy(audioMaster);
if (effect == NULL)
return NULL;
return effect->getAeffect();
}
#if WIN32
void *hInstance;
BOOL WINAPI DllMain(HINSTANCE hInst, DWORD dwReason, LPVOID lpvReserved)
{
hInstance = hInst;
return 1;
}
#endif