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LibDSP: Allow ProcessorRangeParameter to specify if it's a log value
This doesn't affect the parameter's own behavior but is part of the parameter meta-data, just as the name. If a parameter is logarithmic, UI elements should represent it with an interface that scales logarithmically.
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3 changed files with 18 additions and 9 deletions
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@ -26,6 +26,11 @@ enum class ParameterType : u8 {
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Boolean,
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};
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enum class Logarithmic : bool {
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No,
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Yes
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};
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// Processors have modifiable parameters that should be presented to the UI in a uniform way without requiring the processor itself to implement custom interfaces.
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class ProcessorParameter {
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public:
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@ -101,22 +106,25 @@ public:
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class ProcessorRangeParameter final : public Detail::ProcessorParameterSingleValue<ParameterFixedPoint> {
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public:
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ProcessorRangeParameter(String name, ParameterFixedPoint min_value, ParameterFixedPoint max_value, ParameterFixedPoint initial_value)
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ProcessorRangeParameter(String name, ParameterFixedPoint min_value, ParameterFixedPoint max_value, ParameterFixedPoint initial_value, Logarithmic logarithmic)
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: Detail::ProcessorParameterSingleValue<ParameterFixedPoint>(move(name), ParameterType::Range, move(initial_value))
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, m_min_value(move(min_value))
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, m_max_value(move(max_value))
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, m_default_value(move(initial_value))
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, m_logarithmic(logarithmic)
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{
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VERIFY(initial_value <= max_value && initial_value >= min_value);
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}
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ProcessorRangeParameter(ProcessorRangeParameter const& to_copy)
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: ProcessorRangeParameter(to_copy.name(), to_copy.min_value(), to_copy.max_value(), to_copy.value())
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: ProcessorRangeParameter(to_copy.name(), to_copy.min_value(), to_copy.max_value(), to_copy.value(), to_copy.is_logarithmic())
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{
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}
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ParameterFixedPoint min_value() const { return m_min_value; }
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ParameterFixedPoint max_value() const { return m_max_value; }
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ParameterFixedPoint range() const { return m_max_value - m_min_value; }
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constexpr Logarithmic is_logarithmic() const { return m_logarithmic; }
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ParameterFixedPoint default_value() const { return m_default_value; }
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void set_value(ParameterFixedPoint value)
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{
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@ -128,6 +136,7 @@ private:
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double const m_min_value;
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double const m_max_value;
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double const m_default_value;
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Logarithmic const m_logarithmic;
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};
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template<typename EnumT>
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