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Commit 316a25de authored by Max Kellermann's avatar Max Kellermann
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pcm/Volume: add constant PCM_VOLUME_BITS

parent bfe020e0
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Showing with 6 additions and 1 deletion
src/pcm/PcmVolume.cxx
View file @ 316a25de
...@@ -37,7 +37,7 @@ pcm_volume_change(typename Traits::pointer_type buffer, ...@@ -37,7 +37,7 @@ pcm_volume_change(typename Traits::pointer_type buffer,
sample = (sample * volume + pcm_volume_dither() + sample = (sample * volume + pcm_volume_dither() +
PCM_VOLUME_1S / 2) PCM_VOLUME_1S / 2)
/ PCM_VOLUME_1S; >> PCM_VOLUME_BITS;
*buffer++ = PcmClamp<F, Traits>(sample); *buffer++ = PcmClamp<F, Traits>(sample);
} }
......
src/pcm/PcmVolume.hxx
View file @ 316a25de
...@@ -27,6 +27,11 @@ ...@@ -27,6 +27,11 @@
#include <stddef.h> #include <stddef.h>
/** /**
* Number of fractional bits for a fixed-point volume value.
*/
static constexpr unsigned PCM_VOLUME_BITS = 10;
/**
* This value means "100% volume". * This value means "100% volume".
*/ */
static constexpr unsigned PCM_VOLUME_1 = 1024; static constexpr unsigned PCM_VOLUME_1 = 1024;
......
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