Create a vector of IIR::Filter with custom IIR::Coefficients

Audio Plugins
1

Hello,
In a previous plugIn I managed to make an array of common filters like so :

PluginProcessor.h :

std::vector<juce::dsp::IIR::Filter<float>> leftChain;

in some function in the PluginProcessor.cpp :

IIR::Coefficients<float>::Ptr coefficients;
coefficients = IIR::Coefficients<float>::makeLowPass(sampleRate, frequency, qualityFactor);
leftChain.push_back( IIR::Filter<float>(coefficients) );

But now I want to fill leftChain with custom filters that have given arbitrary coefficients (lets say they are stored in std::vector<double> coeffs.

This is what I tried :
PluginProcessor.h : juce::Array<juce::dsp::IIR::Filter<float>> chain;
in some function in the PluginProcessor.cpp :

chain.resize(lines.size());
for (int i = 0; i < numFilters; ++i)
{
    chain[i].coefficients = dsp::IIR::Coefficients<float>::Coefficients(coeffs[0],coeffs[1],coeffs[2],coeffs[3],coeffs[4], coeffs[5]);
}

I simplified here because I actually change the coefficients in the loop but this is not relevent for my problem.

So it seems like the object coefficients are not copyable so it does not want to put it in the array. I keep have the error :

Blockquote
Severity Code Description Project File Line Deletion Status Error C2280 ‘juce::dsp::IIR::Filter::Filter(const juce::dsp::IIR::Filter &)’ : attempted to reference a deleted function MonoBiquad_SharedCode C:\Users\MyName\juce-7.0.5-windows\JUCE\modules\juce_core\containers\juce_ArrayBase.h 155
This error message is indicating that you are trying to use or reference a constructor for the juce::dsp::IIR::Filter<float> class that has been deleted, which means it’s not accessible or usable for copying.

I am not experienced enough to have found a solution to that by myself, I would relly appreciate some help.

2

Update :
I managed to not have the error so the plugin compiles. However any time I push a filter into the chain vector, that causes the plugin to crash. Here is what I do :

first I initialize the vector that will contain the filters :
PluginAudioProcessor.h : std::vector<juce::dsp::IIR::Filter<float>> chain;

then I fill it with actual filters that I set to have the coefficients I want in a loop :
PluginAudioProcessor.cpp :

auto& coefficients = dsp::IIR::Coefficients< float >::Coefficients(
	coeffs[0],
	coeffs[1],
	coeffs[2],
	1.0f,
	coeffs[3],
	coeffs[4]);
chain.push_back(dsp::IIR::Filter<float>(&coefficients));

Well, it manages to pass this step because after doing that, I tell the pluginAudioEditor to print coeffs on the screen and it does manage to do that but after 1sec it crashes.

I don’t know how to correct that and I would appreciate some help. It seems like an obvious task but it makes me struggle a lot. I must be missing something to understand here.

Many thanks for any responses.