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pcm/Dsd2Pcm: move code to TranslateSample()

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10% speedup.  Strange, huh?
This commit is contained in:
Max Kellermann 2020-01-14 22:47:30 +01:00
parent 9647b2cb01
commit 3565f0c8ce
2 changed files with 9 additions and 2 deletions
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10
src/pcm/Dsd2Pcm.cxx
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@ -183,6 +183,13 @@ Dsd2Pcm::CalcOutputSample(size_t ffp) const noexcept
return acc; return acc;
} }
inline float
Dsd2Pcm::TranslateSample(size_t ffp, uint8_t src) noexcept
{
ApplySample(ffp, src);
return CalcOutputSample(ffp);
}
void void
Dsd2Pcm::Translate(size_t samples, Dsd2Pcm::Translate(size_t samples,
const uint8_t *src, ptrdiff_t src_stride, const uint8_t *src, ptrdiff_t src_stride,
@ -194,8 +201,7 @@ Dsd2Pcm::Translate(size_t samples,
unsigned bite1 = *src & 0xFFu; unsigned bite1 = *src & 0xFFu;
src += src_stride; src += src_stride;
if (lsbf) bite1 = bit_reverse(bite1); if (lsbf) bite1 = bit_reverse(bite1);
ApplySample(ffp, bite1); *dst = TranslateSample(ffp, bite1);
*dst = CalcOutputSample(ffp);
dst += dst_stride; dst += dst_stride;
ffp = (ffp + 1) & FIFOMASK; ffp = (ffp + 1) & FIFOMASK;
} }

1
src/pcm/Dsd2Pcm.hxx
View File

@ -78,6 +78,7 @@ public:
private: private:
void ApplySample(size_t ffp, uint8_t src) noexcept; void ApplySample(size_t ffp, uint8_t src) noexcept;
float CalcOutputSample(size_t ffp) const noexcept; float CalcOutputSample(size_t ffp) const noexcept;
float TranslateSample(size_t ffp, uint8_t src) noexcept;
}; };
#endif /* include guard DSD2PCM_H_INCLUDED */ #endif /* include guard DSD2PCM_H_INCLUDED */