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New volk_gnss_sdr kernel: Fast conversion between 16 bit int complex to

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32 bits floating point complex
This commit is contained in:
Javier Arribas
2016-01-20 17:45:47 +01:00
parent e92f409897
commit 07feeeee3a
2 changed files with 114 additions and 0 deletions
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113
src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/kernels/volk_gnsssdr/volk_gnsssdr_16ic_convert_32fc.h Normal file
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@@ -0,0 +1,113 @@
/*!
* \file volk_gnsssdr_32fc_convert_16ic.h
* \brief Volk protokernel: converts 16 bit integer complex complex values to 32 bits float complex values
* \authors <ul>
* <li> Javier Arribas, 2015. jarribas(at)cttc.es
* </ul>
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
*
* This file is part of GNSS-SDR.
*
* GNSS-SDR 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.
*
* GNSS-SDR 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 GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/
#include <inttypes.h>
#include <volk_gnsssdr/volk_gnsssdr_common.h>
#include <volk_gnsssdr/volk_gnsssdr_complex.h>
#ifndef INCLUDED_volk_gnsssdr_16ic_convert_32fc_H
#define INCLUDED_volk_gnsssdr_16ic_convert_32fc_H
#ifdef LV_HAVE_GENERIC
static inline void volk_gnsssdr_16ic_convert_32fc_generic(lv_32fc_t* outputVector, const lv_16sc_t* inputVector, unsigned int num_points)
{
for(unsigned int i = 0; i < num_points; i++)
{
outputVector[i]=lv_cmake((float)lv_creal(inputVector[i]),(float)lv_cimag(inputVector[i]));
}
}
#endif /* LV_HAVE_GENERIC */
#ifdef LV_HAVE_SSE2
#include <emmintrin.h>
static inline void volk_gnsssdr_16ic_convert_32fc_a_sse2(lv_32fc_t* outputVector, const lv_16sc_t* inputVector, unsigned int num_points)
{
const unsigned int sse_iters = num_points / 2;
const lv_16sc_t* _in = inputVector;
lv_32fc_t* _out = outputVector;
__m128 a;
for(unsigned int number = 0; number < sse_iters; number++)
{
a = _mm_set_ps((float)(lv_cimag(_in[1])), (float)(lv_creal(_in[1])), (float)(lv_cimag(_in[0])), (float)(lv_creal(_in[0]))); // //load (2 byte imag, 2 byte real) x 2 into 128 bits reg
_mm_store_ps((float*)_out, a);
_in+=2;
_out+=2;
//*_out++ = lv_cmake((float)lv_creal(*_in),(float)lv_cimag(*_in));
//_in++;
//*_out++ = lv_cmake((float)lv_creal(*_in),(float)lv_cimag(*_in));
//_in++;
}
for (unsigned int i = 0; i < (num_points % 2); ++i)
{
*_out++ = lv_cmake((float)lv_creal(*_in),(float)lv_cimag(*_in));
_in++;
}
}
#endif /* LV_HAVE_SSE2 */
#ifdef LV_HAVE_SSE2
#include <emmintrin.h>
static inline void volk_gnsssdr_16ic_convert_32fc_u_sse2(lv_32fc_t* outputVector, const lv_16sc_t* inputVector, unsigned int num_points)
{
const unsigned int sse_iters = num_points / 2;
const lv_16sc_t* _in = inputVector;
lv_32fc_t* _out = outputVector;
__m128 a;
for(unsigned int number = 0; number < sse_iters; number++)
{
a = _mm_set_ps((float)(lv_cimag(_in[1])), (float)(lv_creal(_in[1])), (float)(lv_cimag(_in[0])), (float)(lv_creal(_in[0]))); // //load (2 byte imag, 2 byte real) x 2 into 128 bits reg
_mm_storeu_ps((float*)_out, a);
_in+=2;
_out+=2;
}
for (unsigned int i = 0; i < (num_points % 2); ++i)
{
*_out++ = lv_cmake((float)lv_creal(*_in),(float)lv_cimag(*_in));
_in++;
}
}
#endif /* LV_HAVE_SSE2 */
// SSE4.1
// a = _mm_load_si128((__m128i*)_in); //load (2 byte imag, 2 byte real) x 4 into 128 bits reg
//use _mm_cvtepi16_epi32 !!!!
#endif /* INCLUDED_volk_gnsssdr_32fc_convert_16ic_u_H */

1
src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/lib/kernel_tests.h
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@@ -76,6 +76,7 @@ std::vector<volk_gnsssdr_test_case_t> init_test_list(volk_gnsssdr_test_params_t
(VOLK_INIT_PUPP(volk_gnsssdr_16ic_resamplerpuppet_16ic, volk_gnsssdr_16ic_resampler_16ic, test_params))
(VOLK_INIT_PUPP(volk_gnsssdr_16ic_resamplerxnpuppet_16ic, volk_gnsssdr_16ic_xn_resampler_16ic_xn, test_params))
(VOLK_INIT_PUPP(volk_gnsssdr_16ic_x2_dotprodxnpuppet_16ic, volk_gnsssdr_16ic_x2_dot_prod_16ic_xn, test_params))
(VOLK_INIT_TEST(volk_gnsssdr_16ic_convert_32fc, test_params))
;
return test_cases;