diff options
Diffstat (limited to 'src/plugins/opensles')
| -rw-r--r-- | src/plugins/opensles/qopenslesaudiooutput.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/plugins/opensles/qopenslesaudiooutput.cpp b/src/plugins/opensles/qopenslesaudiooutput.cpp index 65c0f5a61..df91e6ff1 100644 --- a/src/plugins/opensles/qopenslesaudiooutput.cpp +++ b/src/plugins/opensles/qopenslesaudiooutput.cpp @@ -52,6 +52,8 @@ #define BUFFER_COUNT 2 #define DEFAULT_PERIOD_TIME_MS 50 #define MINIMUM_PERIOD_TIME_MS 5 +#define EBASE 2.302585093 +#define LOG10(x) qLn(x)/qreal(EBASE) QT_BEGIN_NAMESPACE @@ -622,7 +624,7 @@ inline SLmillibel QOpenSLESAudioOutput::adjustVolume(qreal vol) if (qFuzzyCompare(vol, qreal(1.0))) return 0; - return SL_MILLIBEL_MIN + ((1 - (qLn(10 - (vol * 10)) / qLn(10))) * SL_MILLIBEL_MAX); + return 20 * LOG10(vol) * 100; // I.e., 20 * LOG10(SL_MILLIBEL_MAX * vol / SL_MILLIBEL_MAX) } QT_END_NAMESPACE |