dsp_interface: fix sound being played while volume is 0
According to documentation, if the argument of std::exp is zero, one is returned. However we want the return value to be also zero in this case so no audio is played.
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@ -68,7 +68,7 @@ static void VolumeAdjustSamples(std::vector<s16>& samples) {
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}
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// Implementation of a volume slider with a dynamic range of 60 dB
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const float volume_scale_factor{std::exp(6.90775f * volume) * 0.001f};
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const float volume_scale_factor = volume == 0 ? 0 : std::exp(6.90775f * volume) * 0.001f;
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for (auto& sample : samples) {
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sample = static_cast<s16>(sample * volume_scale_factor);
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}
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