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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.
This commit is contained in:
fearlessTobi 2019-01-26 14:53:58 +01:00
parent 1f4ca1e841
commit 7185d90a53
1 changed files with 1 additions and 1 deletions
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2
src/audio_core/stream.cpp
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@ -68,7 +68,7 @@ static void VolumeAdjustSamples(std::vector<s16>& samples) {
} }
// Implementation of a volume slider with a dynamic range of 60 dB // Implementation of a volume slider with a dynamic range of 60 dB
const float volume_scale_factor{std::exp(6.90775f * volume) * 0.001f}; const float volume_scale_factor = volume == 0 ? 0 : std::exp(6.90775f * volume) * 0.001f;
for (auto& sample : samples) { for (auto& sample : samples) {
sample = static_cast<s16>(sample * volume_scale_factor); sample = static_cast<s16>(sample * volume_scale_factor);
} }