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115 lines
5 KiB
C++
115 lines
5 KiB
C++
//
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// Copyright 2012-2013 Ettus Research LLC
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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#include "convert_common.hpp"
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#include <uhd/utils/byteswap.hpp>
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#include <emmintrin.h>
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using namespace uhd::convert;
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template <const int shuf>
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UHD_INLINE __m128i pack_sc32_4x(
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const __m128 &in0, const __m128 &in1,
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const __m128 &in2, const __m128 &in3,
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const __m128 &scalar
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){
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__m128i tmpi0 = _mm_cvtps_epi32(_mm_mul_ps(in0, scalar));
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tmpi0 = _mm_shuffle_epi32(tmpi0, shuf);
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__m128i tmpi1 = _mm_cvtps_epi32(_mm_mul_ps(in1, scalar));
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tmpi1 = _mm_shuffle_epi32(tmpi1, shuf);
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const __m128i lo = _mm_packs_epi32(tmpi0, tmpi1);
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__m128i tmpi2 = _mm_cvtps_epi32(_mm_mul_ps(in2, scalar));
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tmpi2 = _mm_shuffle_epi32(tmpi2, shuf);
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__m128i tmpi3 = _mm_cvtps_epi32(_mm_mul_ps(in3, scalar));
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tmpi3 = _mm_shuffle_epi32(tmpi3, shuf);
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const __m128i hi = _mm_packs_epi32(tmpi2, tmpi3);
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return _mm_packs_epi16(lo, hi);
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}
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DECLARE_CONVERTER(fc32, 1, sc8_item32_be, 1, PRIORITY_SIMD){
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const fc32_t *input = reinterpret_cast<const fc32_t *>(inputs[0]);
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item32_t *output = reinterpret_cast<item32_t *>(outputs[0]);
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const __m128 scalar = _mm_set_ps1(float(scale_factor));
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const int shuf = _MM_SHUFFLE(3, 2, 1, 0);
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#define convert_fc32_1_to_sc8_item32_1_bswap_guts(_al_) \
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for (size_t j = 0; i+7 < nsamps; i+=8, j+=4){ \
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/* load from input */ \
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__m128 tmp0 = _mm_load ## _al_ ## ps(reinterpret_cast<const float *>(input+i+0)); \
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__m128 tmp1 = _mm_load ## _al_ ## ps(reinterpret_cast<const float *>(input+i+2)); \
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__m128 tmp2 = _mm_load ## _al_ ## ps(reinterpret_cast<const float *>(input+i+4)); \
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__m128 tmp3 = _mm_load ## _al_ ## ps(reinterpret_cast<const float *>(input+i+6)); \
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\
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/* convert */ \
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const __m128i tmpi = pack_sc32_4x<shuf>(tmp0, tmp1, tmp2, tmp3, scalar); \
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\
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/* store to output */ \
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_mm_storeu_si128(reinterpret_cast<__m128i *>(output+j), tmpi); \
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} \
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size_t i = 0;
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//dispatch according to alignment
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if ((size_t(input) & 0xf) == 0){
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convert_fc32_1_to_sc8_item32_1_bswap_guts(_)
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}
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else{
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convert_fc32_1_to_sc8_item32_1_bswap_guts(u_)
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}
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//convert remainder
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xx_to_item32_sc8<uhd::htonx>(input+i, output+(i/2), nsamps-i, scale_factor);
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}
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DECLARE_CONVERTER(fc32, 1, sc8_item32_le, 1, PRIORITY_SIMD){
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const fc32_t *input = reinterpret_cast<const fc32_t *>(inputs[0]);
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item32_t *output = reinterpret_cast<item32_t *>(outputs[0]);
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const __m128 scalar = _mm_set_ps1(float(scale_factor));
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const int shuf = _MM_SHUFFLE(0, 1, 2, 3);
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#define convert_fc32_1_to_sc8_item32_1_nswap_guts(_al_) \
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for (size_t j = 0; i+7 < nsamps; i+=8, j+=4){ \
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/* load from input */ \
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__m128 tmp0 = _mm_load ## _al_ ## ps(reinterpret_cast<const float *>(input+i+0)); \
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__m128 tmp1 = _mm_load ## _al_ ## ps(reinterpret_cast<const float *>(input+i+2)); \
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__m128 tmp2 = _mm_load ## _al_ ## ps(reinterpret_cast<const float *>(input+i+4)); \
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__m128 tmp3 = _mm_load ## _al_ ## ps(reinterpret_cast<const float *>(input+i+6)); \
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\
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/* convert */ \
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const __m128i tmpi = pack_sc32_4x<shuf>(tmp0, tmp1, tmp2, tmp3, scalar); \
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\
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/* store to output */ \
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_mm_storeu_si128(reinterpret_cast<__m128i *>(output+j), tmpi); \
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} \
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size_t i = 0;
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//dispatch according to alignment
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if ((size_t(input) & 0xf) == 0){
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convert_fc32_1_to_sc8_item32_1_nswap_guts(_)
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}
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else{
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convert_fc32_1_to_sc8_item32_1_nswap_guts(u_)
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}
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//convert remainder
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xx_to_item32_sc8<uhd::htowx>(input+i, output+(i/2), nsamps-i, scale_factor);
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}
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