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| author | Philip Balister <philip@opensdr.com> | 2010-09-25 11:51:04 -0400 |
|---|---|---|
| committer | Philip Balister <philip@opensdr.com> | 2010-09-25 11:51:04 -0400 |
| commit | c75286df4689369aa9a3f4148b964d66109e085e (patch) | |
| tree | c5d6ba904aba0abe6ed576f718ac3bbbbdfd44f7 | |
| parent | 082715d0c90b615874fe6bbe93069fa696b3d47a (diff) | |
| download | uhd-c75286df4689369aa9a3f4148b964d66109e085e.tar.gz uhd-c75286df4689369aa9a3f4148b964d66109e085e.tar.bz2 uhd-c75286df4689369aa9a3f4148b964d66109e085e.zip | |
Add more NEON for type conversion.
| -rw-r--r-- | host/lib/transport/convert_types_impl.hpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/host/lib/transport/convert_types_impl.hpp b/host/lib/transport/convert_types_impl.hpp index b9a47eb0e..48ff99725 100644 --- a/host/lib/transport/convert_types_impl.hpp +++ b/host/lib/transport/convert_types_impl.hpp @@ -266,6 +266,26 @@ static UHD_INLINE void item32_to_fc32_nswap( } } +#elif defined(USE_ARM_NEON_H) +static UHD_INLINE void item32_to_fc32_nswap( + const item32_t *input, fc32_t *output, size_t nsamps) +{ + size_t i; + + float32x4_t Q1 = vdupq_n_f32(floats_per_short); + for (i=0; i < (nsamps & ~0x03); i+=2) { + int16x4_t D0 = vld1_s16(reinterpret_cast<const int16_t *>(&input[i])); + int16x4_t D1 = vrev32_s16(D0); + int32x4_t Q2 = vmovl_s16(D1); + float32x4_t Q3 = vcvtq_f32_s32(Q2); + float32x4_t Q4 = vmulq_f32(Q3, Q1); + vst1q_f32((reinterpret_cast<float *>(&output[i])), Q4); + } + + for (; i < nsamps; i++) + output[i] = item32_to_fc32(input[i]); +} + #else static UHD_INLINE void item32_to_fc32_nswap( const item32_t *input, fc32_t *output, size_t nsamps |