JUCE/modules/juce_audio_processors/utilities/juce_RangedAudioParameter.cpp

/*
  ==============================================================================

   This file is part of the JUCE library.
   Copyright (c) 2017 - ROLI Ltd.

   JUCE is an open source library subject to commercial or open-source
   licensing.

   By using JUCE, you agree to the terms of both the JUCE 5 End-User License
   Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
   27th April 2017).

   End User License Agreement: www.juce.com/juce-5-licence
   Privacy Policy: www.juce.com/juce-5-privacy-policy

   Or: You may also use this code under the terms of the GPL v3 (see
   www.gnu.org/licenses).

   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
   DISCLAIMED.

  ==============================================================================
*/

namespace juce
{

RangedAudioParameter::RangedAudioParameter (const String& parameterID,
                                            const String& name,
                                            const String& label,
                                            Category category)
    : AudioProcessorParameterWithID (parameterID, name, label, category)
{
}

int RangedAudioParameter::getNumSteps() const
{
    const auto& range = getNormalisableRange();

    if (range.interval > 0)
        return (static_cast<int> ((range.end - range.start) / range.interval) + 1);

    return AudioProcessor::getDefaultNumParameterSteps();
}

float RangedAudioParameter::convertTo0to1 (float v) const noexcept
{
    const auto& range = getNormalisableRange();
    return range.convertTo0to1 (range.snapToLegalValue (v));
}

float RangedAudioParameter::convertFrom0to1 (float v) const noexcept
{
    const auto& range = getNormalisableRange();
    return range.snapToLegalValue (range.convertFrom0to1 (jlimit (0.0f, 1.0f, v)));
}

} // namespace juce