GNU Radio 3.6.3 C++ API
volk_8i_convert_16i_u.h
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1 #ifndef INCLUDED_volk_8i_convert_16i_u_H
2 #define INCLUDED_volk_8i_convert_16i_u_H
3 
4 #include <inttypes.h>
5 #include <stdio.h>
6 
7 #ifdef LV_HAVE_SSE4_1
8 #include <smmintrin.h>
9 
10  /*!
11  \brief Converts the input 8 bit integer data into 16 bit integer data
12  \param inputVector The 8 bit input data buffer
13  \param outputVector The 16 bit output data buffer
14  \param num_points The number of data values to be converted
15  \note Input and output buffers do NOT need to be properly aligned
16  */
17 static inline void volk_8i_convert_16i_u_sse4_1(int16_t* outputVector, const int8_t* inputVector, unsigned int num_points){
18  unsigned int number = 0;
19  const unsigned int sixteenthPoints = num_points / 16;
20 
21  const __m128i* inputVectorPtr = (const __m128i*)inputVector;
22  __m128i* outputVectorPtr = (__m128i*)outputVector;
23  __m128i inputVal;
24  __m128i ret;
25 
26  for(;number < sixteenthPoints; number++){
27  inputVal = _mm_loadu_si128(inputVectorPtr);
28  ret = _mm_cvtepi8_epi16(inputVal);
29  ret = _mm_slli_epi16(ret, 8); // Multiply by 256
30  _mm_storeu_si128(outputVectorPtr, ret);
31 
32  outputVectorPtr++;
33 
34  inputVal = _mm_srli_si128(inputVal, 8);
35  ret = _mm_cvtepi8_epi16(inputVal);
36  ret = _mm_slli_epi16(ret, 8); // Multiply by 256
37  _mm_storeu_si128(outputVectorPtr, ret);
38 
39  outputVectorPtr++;
40 
41  inputVectorPtr++;
42  }
43 
44  number = sixteenthPoints * 16;
45  for(; number < num_points; number++){
46  outputVector[number] = (int16_t)(inputVector[number])*256;
47  }
48 }
49 #endif /* LV_HAVE_SSE4_1 */
50 
51 #ifdef LV_HAVE_GENERIC
52  /*!
53  \brief Converts the input 8 bit integer data into 16 bit integer data
54  \param inputVector The 8 bit input data buffer
55  \param outputVector The 16 bit output data buffer
56  \param num_points The number of data values to be converted
57  \note Input and output buffers do NOT need to be properly aligned
58  */
59 static inline void volk_8i_convert_16i_u_generic(int16_t* outputVector, const int8_t* inputVector, unsigned int num_points){
60  int16_t* outputVectorPtr = outputVector;
61  const int8_t* inputVectorPtr = inputVector;
62  unsigned int number = 0;
63 
64  for(number = 0; number < num_points; number++){
65  *outputVectorPtr++ = ((int16_t)(*inputVectorPtr++)) * 256;
66  }
67 }
68 #endif /* LV_HAVE_GENERIC */
69 
70 
71 
72 
73 #endif /* INCLUDED_VOLK_8s_CONVERT_16s_UNALIGNED8_H */