diff options
Diffstat (limited to 'host/lib/convert/sse2_sc16_to_fc64.cpp')
| -rw-r--r-- | host/lib/convert/sse2_sc16_to_fc64.cpp | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/host/lib/convert/sse2_sc16_to_fc64.cpp b/host/lib/convert/sse2_sc16_to_fc64.cpp index 45821ac9f..4be6bd084 100644 --- a/host/lib/convert/sse2_sc16_to_fc64.cpp +++ b/host/lib/convert/sse2_sc16_to_fc64.cpp @@ -103,3 +103,48 @@ DECLARE_CONVERTER(sc16_item32_be, 1, fc64, 1, PRIORITY_SIMD) // convert remainder item32_sc16_to_xx<uhd::htonx>(input + i, output + i, nsamps - i, scale_factor); } + +DECLARE_CONVERTER(sc16_chdr, 1, fc64, 1, PRIORITY_SIMD) +{ + const sc16_t* input = reinterpret_cast<const sc16_t*>(inputs[0]); + fc64_t* output = reinterpret_cast<fc64_t*>(outputs[0]); + + const __m128d scalar = _mm_set1_pd(scale_factor / (1 << 16)); + const __m128i zeroi = _mm_setzero_si128(); + +#define convert_chdr_1_to_fc64_1_guts(_al_) \ + for (; i + 3 < nsamps; i += 4) { \ + /* load from input */ \ + __m128i tmpi = _mm_loadu_si128(reinterpret_cast<const __m128i*>(input + i)); \ + \ + /* unpack 16-bit pairs */ \ + __m128i tmpilo = _mm_unpacklo_epi16(zeroi, tmpi); /* value in upper 16 bits */ \ + __m128i tmpihi = _mm_unpackhi_epi16(zeroi, tmpi); \ + \ + /* convert and scale */ \ + __m128d tmp0 = _mm_mul_pd(_mm_cvtepi32_pd(tmpilo), scalar); \ + tmpilo = _mm_unpackhi_epi64(tmpilo, zeroi); \ + __m128d tmp1 = _mm_mul_pd(_mm_cvtepi32_pd(tmpilo), scalar); \ + __m128d tmp2 = _mm_mul_pd(_mm_cvtepi32_pd(tmpihi), scalar); \ + tmpihi = _mm_unpackhi_epi64(tmpihi, zeroi); \ + __m128d tmp3 = _mm_mul_pd(_mm_cvtepi32_pd(tmpihi), scalar); \ + \ + /* store to output */ \ + _mm_store##_al_##pd(reinterpret_cast<double*>(output + i + 0), tmp0); \ + _mm_store##_al_##pd(reinterpret_cast<double*>(output + i + 1), tmp1); \ + _mm_store##_al_##pd(reinterpret_cast<double*>(output + i + 2), tmp2); \ + _mm_store##_al_##pd(reinterpret_cast<double*>(output + i + 3), tmp3); \ + } + + size_t i = 0; + + // dispatch according to alignment + if ((size_t(output) & 0xf) == 0) { + convert_chdr_1_to_fc64_1_guts(_) + } else { + convert_chdr_1_to_fc64_1_guts(u_) + } + + // convert remainder + chdr_sc16_to_xx(input + i, output + i, nsamps - i, scale_factor); +} |