root / volk / include / volk / volk_16sc_deinterleave_real_8s_aligned16.h @ 15ad4b53
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| 1 | #ifndef INCLUDED_VOLK_16sc_DEINTERLEAVE_REAL_8s_ALIGNED16_H
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| 2 | #define INCLUDED_VOLK_16sc_DEINTERLEAVE_REAL_8s_ALIGNED16_H
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| 3 | |
| 4 | #include <inttypes.h> |
| 5 | #include <stdio.h> |
| 6 | |
| 7 | #if LV_HAVE_SSSE3
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| 8 | #include <tmmintrin.h> |
| 9 | /*!
|
| 10 | \brief Deinterleaves the complex 16 bit vector into 8 bit I vector data |
| 11 | \param complexVector The complex input vector |
| 12 | \param iBuffer The I buffer output data |
| 13 | \param num_points The number of complex data values to be deinterleaved |
| 14 | */ |
| 15 | static inline void volk_16sc_deinterleave_real_8s_aligned16_ssse3(int8_t* iBuffer, const lv_16sc_t* complexVector, unsigned int num_points){ |
| 16 | unsigned int number = 0; |
| 17 | const int8_t* complexVectorPtr = (int8_t*)complexVector;
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| 18 | int8_t* iBufferPtr = iBuffer; |
| 19 | __m128i iMoveMask1 = _mm_set_epi8(0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 13, 12, 9, 8, 5, 4, 1, 0); |
| 20 | __m128i iMoveMask2 = _mm_set_epi8(13, 12, 9, 8, 5, 4, 1, 0, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80); |
| 21 | __m128i complexVal1, complexVal2, complexVal3, complexVal4, iOutputVal; |
| 22 | |
| 23 | unsigned int sixteenthPoints = num_points / 16; |
| 24 | |
| 25 | for(number = 0; number < sixteenthPoints; number++){ |
| 26 | complexVal1 = _mm_load_si128((__m128i*)complexVectorPtr); complexVectorPtr += 16;
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| 27 | complexVal2 = _mm_load_si128((__m128i*)complexVectorPtr); complexVectorPtr += 16;
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| 28 | |
| 29 | complexVal3 = _mm_load_si128((__m128i*)complexVectorPtr); complexVectorPtr += 16;
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| 30 | complexVal4 = _mm_load_si128((__m128i*)complexVectorPtr); complexVectorPtr += 16;
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| 31 | |
| 32 | complexVal1 = _mm_shuffle_epi8(complexVal1, iMoveMask1); |
| 33 | complexVal2 = _mm_shuffle_epi8(complexVal2, iMoveMask2); |
| 34 | |
| 35 | complexVal1 = _mm_or_si128(complexVal1, complexVal2); |
| 36 | |
| 37 | complexVal3 = _mm_shuffle_epi8(complexVal3, iMoveMask1); |
| 38 | complexVal4 = _mm_shuffle_epi8(complexVal4, iMoveMask2); |
| 39 | |
| 40 | complexVal3 = _mm_or_si128(complexVal3, complexVal4); |
| 41 | |
| 42 | |
| 43 | complexVal1 = _mm_srai_epi16(complexVal1, 8);
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| 44 | complexVal3 = _mm_srai_epi16(complexVal3, 8);
|
| 45 | |
| 46 | iOutputVal = _mm_packs_epi16(complexVal1, complexVal3); |
| 47 | |
| 48 | _mm_store_si128((__m128i*)iBufferPtr, iOutputVal); |
| 49 | |
| 50 | iBufferPtr += 16;
|
| 51 | } |
| 52 | |
| 53 | number = sixteenthPoints * 16;
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| 54 | int16_t* int16ComplexVectorPtr = (int16_t*)complexVectorPtr; |
| 55 | for(; number < num_points; number++){
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| 56 | *iBufferPtr++ = ((int8_t)(*int16ComplexVectorPtr++ / 256));
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| 57 | int16ComplexVectorPtr++; |
| 58 | } |
| 59 | } |
| 60 | #endif /* LV_HAVE_SSSE3 */ |
| 61 | |
| 62 | #if LV_HAVE_GENERIC
|
| 63 | /*!
|
| 64 | \brief Deinterleaves the complex 16 bit vector into 8 bit I vector data |
| 65 | \param complexVector The complex input vector |
| 66 | \param iBuffer The I buffer output data |
| 67 | \param num_points The number of complex data values to be deinterleaved |
| 68 | */ |
| 69 | static inline void volk_16sc_deinterleave_real_8s_aligned16_generic(int8_t* iBuffer, const lv_16sc_t* complexVector, unsigned int num_points){ |
| 70 | unsigned int number = 0; |
| 71 | const int16_t* complexVectorPtr = (int16_t*)complexVector;
|
| 72 | int8_t* iBufferPtr = iBuffer; |
| 73 | for(number = 0; number < num_points; number++){ |
| 74 | *iBufferPtr++ = (int8_t)(*complexVectorPtr++ / 256);
|
| 75 | complexVectorPtr++; |
| 76 | } |
| 77 | } |
| 78 | #endif /* LV_HAVE_GENERIC */ |
| 79 | |
| 80 | |
| 81 | |
| 82 | |
| 83 | #endif /* INCLUDED_VOLK_16sc_DEINTERLEAVE_REAL_8s_ALIGNED16_H */ |