AnalogTapeModel

Physical modelling signal processing for analog tape recording
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MixGroupsController.cpp (3406B)

      1 #include "MixGroupsController.h"
      2 
      3 using namespace MixGroupsConstants;
      4 
      5 MixGroupsController::MixGroupsController (AudioProcessorValueTreeState& vts,
      6                                           AudioProcessor* proc) : vts (vts)
      7 {
      8     // load parameters
      9     auto params = proc->getParameters();
     10     loadParameterList (params);
     11 
     12     // set up receiver
     13     sharedData->loadParameterList (paramList);
     14     sharedData->addListener (this);
     15 
     16     mixGroupParam = vts.getRawParameterValue (mixGroupParamID);
     17 }
     18 
     19 MixGroupsController::~MixGroupsController()
     20 {
     21     sharedData->removeListener (this);
     22 }
     23 
     24 void MixGroupsController::createParameterLayout (chowdsp::Parameters& params)
     25 {
     26     using namespace chowdsp::ParamUtils;
     27     emplace_param<chowdsp::ChoiceParameter> (params, mixGroupParamID, "Mix Group", StringArray ({ "N/A", "1", "2", "3", "4" }), 0);
     28 }
     29 
     30 void MixGroupsController::loadParameterList (Array<AudioProcessorParameter*>& params)
     31 {
     32     // iterate over parameters
     33     for (auto* param : params)
     34     {
     35         auto paramWithID = dynamic_cast<AudioProcessorParameterWithID*> (param);
     36 
     37         if (paramWithID == nullptr)
     38             continue;
     39 
     40         auto paramID = paramWithID->paramID;
     41         vts.addParameterListener (paramID, this);
     42 
     43         if (paramID != mixGroupParamID)
     44             paramList.addIfNotAlreadyThere (paramID);
     45     }
     46 }
     47 
     48 void MixGroupsController::parameterChanged (const String& parameterID, float newValue)
     49 {
     50     if (parameterID == lastParameterChanged) // I just changed this param, don't want to get stuck in an endless loop...
     51     {
     52         lastParameterChanged = String();
     53         return;
     54     }
     55 
     56     int mixGroup = (int) mixGroupParam->load();
     57 
     58     if (parameterID == mixGroupParamID) // mix group was changed
     59     {
     60         sharedData->pluginGroupChanged (uuid.toString(), mixGroup);
     61 
     62         if (mixGroup == 0)
     63             return;
     64 
     65         int numPluginsInGroup = sharedData->getNumPluginsInGroup (mixGroup);
     66         if (numPluginsInGroup == 1) // I'm the only plugin in this group
     67         {
     68             sharedData->copyPluginState (mixGroup, vts);
     69         }
     70         else if (numPluginsInGroup > 1) // there are already plugins in this group
     71         {
     72             // copy shared state to me
     73             for (const auto& paramID : paramList)
     74             {
     75                 auto param = vts.getParameter (paramID);
     76                 auto value = sharedData->getParameter (paramID, mixGroup);
     77 
     78                 lastParameterChanged = paramID;
     79                 param->setValueNotifyingHost (param->convertTo0to1 (value));
     80             }
     81         }
     82 
     83         return;
     84     }
     85 
     86     if (mixGroup == 0) // no mix group, don't bother sending
     87         return;
     88 
     89     if (! paramList.contains (parameterID)) // parameter is not in list
     90         return;
     91 
     92     sharedData->setParameter (parameterID, mixGroup, newValue, uuid.toString());
     93 }
     94 
     95 void MixGroupsController::mixGroupParamChanged (const String& paramID, int mixGroup, float value, String otherUuid)
     96 {
     97     if (uuid == otherUuid) // this message came from me!
     98         return;
     99 
    100     // load parameter
    101     auto param = vts.getParameter (paramID);
    102     if (param == nullptr) // invalid parameter
    103         return;
    104 
    105     if (mixGroup != (int) mixGroupParam->load()) // received message does not apply to this mix group
    106         return;
    107 
    108     // set parameter value
    109     lastParameterChanged = paramID;
    110     param->setValueNotifyingHost (param->convertTo0to1 (value));
    111 }