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-rw-r--r--host/lib/convert/sse2_sc16_to_fc64.cpp115
1 files changed, 115 insertions, 0 deletions
diff --git a/host/lib/convert/sse2_sc16_to_fc64.cpp b/host/lib/convert/sse2_sc16_to_fc64.cpp
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+++ b/host/lib/convert/sse2_sc16_to_fc64.cpp
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+//
+// Copyright 2011-2012 Ettus Research LLC
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+
+#include "convert_common.hpp"
+#include <uhd/utils/byteswap.hpp>
+#include <emmintrin.h>
+
+using namespace uhd::convert;
+
+DECLARE_CONVERTER(sc16_item32_le, 1, fc64, 1, PRIORITY_SIMD){
+ const item32_t *input = reinterpret_cast<const item32_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_item32_1_to_fc64_1_nswap_guts(_al_) \
+ for (; i+3 < nsamps; i+=4){ \
+ /* load from input */ \
+ __m128i tmpi = _mm_loadu_si128(reinterpret_cast<const __m128i *>(input+i)); \
+ \
+ /* unpack + swap 16-bit pairs */ \
+ tmpi = _mm_shufflelo_epi16(tmpi, _MM_SHUFFLE(2, 3, 0, 1)); \
+ tmpi = _mm_shufflehi_epi16(tmpi, _MM_SHUFFLE(2, 3, 0, 1)); \
+ __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_item32_1_to_fc64_1_nswap_guts(_)
+ }
+ else{
+ convert_item32_1_to_fc64_1_nswap_guts(u_)
+ }
+
+ //convert remainder
+ item32_sc16_to_xx<uhd::htowx>(input+i, output+i, nsamps-i, scale_factor);
+}
+
+DECLARE_CONVERTER(sc16_item32_be, 1, fc64, 1, PRIORITY_SIMD){
+ const item32_t *input = reinterpret_cast<const item32_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_item32_1_to_fc64_1_bswap_guts(_al_) \
+ for (; i+3 < nsamps; i+=4){ \
+ /* load from input */ \
+ __m128i tmpi = _mm_loadu_si128(reinterpret_cast<const __m128i *>(input+i)); \
+ \
+ /* byteswap + unpack -> byteswap 16 bit words */ \
+ tmpi = _mm_or_si128(_mm_srli_epi16(tmpi, 8), _mm_slli_epi16(tmpi, 8)); \
+ __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_item32_1_to_fc64_1_bswap_guts(_)
+ }
+ else{
+ convert_item32_1_to_fc64_1_bswap_guts(u_)
+ }
+
+ //convert remainder
+ item32_sc16_to_xx<uhd::htonx>(input+i, output+i, nsamps-i, scale_factor);
+}