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| author | Max Kellermann <max@duempel.org> | 2009-11-19 21:00:50 +0100 |
|---|---|---|
| committer | Max Kellermann <max@duempel.org> | 2009-11-19 21:00:50 +0100 |
| commit | 135842803156ab3d983babb61d22905a43977be3 (patch) | |
| tree | 4087984407caa2361118950238fa8672dce94aa1 /src/pcm_utils.h | |
| parent | 5a480137d2c724c8a3359c66a9120e310ea19cd1 (diff) | |
| download | mpd-135842803156ab3d983babb61d22905a43977be3.tar.gz mpd-135842803156ab3d983babb61d22905a43977be3.tar.xz mpd-135842803156ab3d983babb61d22905a43977be3.zip | |
pcm_volume: implemented 32 bit support
Support 32 bit samples with software mixer.
Diffstat (limited to 'src/pcm_utils.h')
| -rw-r--r-- | src/pcm_utils.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/pcm_utils.h b/src/pcm_utils.h index 93f414231..8b2259655 100644 --- a/src/pcm_utils.h +++ b/src/pcm_utils.h @@ -38,4 +38,18 @@ pcm_range(int32_t sample, unsigned bits) return sample; } +/** + * Check if the value is within the range of the provided bit size, + * and caps it if necessary. + */ +static inline int64_t +pcm_range_64(int64_t sample, unsigned bits) +{ + if (G_UNLIKELY(sample < ((int64_t)-1 << (bits - 1)))) + return (int64_t)-1 << (bits - 1); + if (G_UNLIKELY(sample >= ((int64_t)1 << (bits - 1)))) + return ((int64_t)1 << (bits - 1)) - 1; + return sample; +} + #endif |