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bluetooth: backend-native: Round volume to closest instead of up

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Part-of: <https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/merge_requests/521>
This commit is contained in:
Marijn Suijten 2020-06-07 18:30:54 +02:00
parent a575006aa8
commit bfb3aeac1c
1 changed files with 7 additions and 4 deletions
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11
src/modules/bluetooth/backend-native.c
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@ -124,11 +124,14 @@ static uint32_t hfp_features =
"</node>"
static pa_volume_t hsp_gain_to_volume(uint16_t gain) {
pa_volume_t volume = (pa_volume_t) (gain * PA_VOLUME_NORM / HSP_MAX_GAIN);
pa_volume_t volume = (pa_volume_t) ((
gain * PA_VOLUME_NORM
/* Round to closest by adding half the denominator */
+ HSP_MAX_GAIN / 2
) / HSP_MAX_GAIN);
/* increment volume by one to correct rounding errors */
if (volume < PA_VOLUME_NORM)
volume++;
if (volume > PA_VOLUME_NORM)
volume = PA_VOLUME_NORM;
return volume;
}