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| author | Dana Conrad <dconrad@fastmail.com> | 2021-07-31 21:05:40 -0500 |
|---|---|---|
| committer | Solomon Peachy <pizza@shaftnet.org> | 2021-08-01 02:20:00 +0000 |
| commit | a2fd00cf38d991eed23efd8f780edf9c39c1d05f (patch) | |
| tree | 5b06ef8f84f69ddb9ec3f7aad8f716b99aec48be | |
| parent | ecf0d631e7e06db2ee1a0de98436ae1eb20c822c (diff) | |
| download | rockbox-a2fd00cf38d991eed23efd8f780edf9c39c1d05f.tar.gz rockbox-a2fd00cf38d991eed23efd8f780edf9c39c1d05f.zip | |
Software Volume: Remove sample rounding
Change-Id: I630139333d64b4c8cae86939ecfc52c44a34ffea
| -rw-r--r-- | firmware/pcm_sw_volume.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/firmware/pcm_sw_volume.c b/firmware/pcm_sw_volume.c index 29049059e6..7322269f44 100644 --- a/firmware/pcm_sw_volume.c +++ b/firmware/pcm_sw_volume.c | |||
| @@ -51,10 +51,10 @@ static typeof (memcpy) *pcm_scaling_fn = NULL; | |||
| 51 | #define PCM_F_T int64_t /* Requires large integer math */ | 51 | #define PCM_F_T int64_t /* Requires large integer math */ |
| 52 | #endif /* PCM_SW_VOLUME_FRACBITS */ | 52 | #endif /* PCM_SW_VOLUME_FRACBITS */ |
| 53 | 53 | ||
| 54 | /* Scale and round sample by PCM factor */ | 54 | /* Scale sample by PCM factor */ |
| 55 | static inline int32_t pcm_scale_sample(PCM_F_T f, int32_t s) | 55 | static inline int32_t pcm_scale_sample(PCM_F_T f, int32_t s) |
| 56 | { | 56 | { |
| 57 | return (f * s + (PCM_F_T)PCM_FACTOR_UNITY/2) >> PCM_SW_VOLUME_FRACBITS; | 57 | return (f * s) >> PCM_SW_VOLUME_FRACBITS; |
| 58 | } | 58 | } |
| 59 | 59 | ||
| 60 | /* Both UNITY, use direct copy */ | 60 | /* Both UNITY, use direct copy */ |