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annotate foosdk/sdk/foobar2000/helpers/VolumeMap.cpp @ 1:20d02a178406 default tip

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*: check in everything else yay
author Paper <paper@tflc.us>
date Mon, 05 Jan 2026 02:15:46 -0500
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1 #include "StdAfx.h"
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2 #include "VolumeMap.h"
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3
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4 static constexpr double powval = 2.0;
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5 static constexpr double silence = -100.0;
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6
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7 double VolumeMap::SliderToDB2(double slider) {
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8 double v = SliderToDB(slider);
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9 v = floor(v * 2.0 + 0.5) * 0.5;
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10 return v;
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11 }
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12
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13 double VolumeMap::SliderToDB(double slider) {
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14 if (slider > 0) {
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15 return pfc::max_t<double>(silence,10.0 * log(slider) / log(powval));
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16 } else {
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17 return silence;
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18 }
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19 }
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20 double VolumeMap::DBToSlider(double volumeDB) {
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21 return pfc::clip_t<double>(pow(powval,volumeDB / 10.0), 0, 1);
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22 }