tracktion_RackReturnNode.h

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 /*
    ,--.                     ,--.     ,--.  ,--.
  ,-'  '-.,--.--.,--,--.,---.|  |,-.,-'  '-.`--' ,---. ,--,--,      Copyright 2024
  '-.  .-'|  .--' ,-.  | .--'|     /'-.  .-',--.| .-. ||      \   Tracktion Software
    |  |  |  |  \ '-'  \ `--.|  \  \  |  |  |  |' '-' '|  ||  |       Corporation
    `---' `--'   `--`--'`---'`--'`--' `---' `--' `---' `--''--'    www.tracktion.com
 
    Tracktion Engine uses a GPL/commercial licence - see LICENCE.md for details.
*/
 
namespace tracktion { inline namespace engine
{
 
class RackReturnNode final  : public tracktion::graph::Node
{
public:
    RackReturnNode (std::unique_ptr<Node> wetNode,
                    std::function<float()> wetGainFunc,
                    Node* dryNode,
                    std::function<float()> dryGainFunc);
 
    std::vector<Node*> getDirectInputNodes() override;
    tracktion::graph::NodeProperties getNodeProperties() override;
    TransformResult transform (Node&, const std::vector<Node*>&, TransformCache&) override;
    void prepareToPlay (const tracktion::graph::PlaybackInitialisationInfo&) override;
    bool isReadyToProcess() override;
    void preProcess (choc::buffer::FrameCount, juce::Range<int64_t>) override;
    void process (ProcessContext&) override;
 
private:
    //==============================================================================
    std::unique_ptr<Node> wetInput, dryLatencyNode;
    Node* dryInput = nullptr;
    std::function<float()> wetGainFunction, dryGainFunction;
    float lastWetGain = 0.0f, lastDryGain = 0.0f;
    bool hasTransformed = false, canUseWetSourceBuffers = false;
};
 
}} // namespace tracktion { inline namespace engine