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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | mjames | 1 | #include "ref.h" |
| 2 | |||
| 3 | void ref_scale_f32( |
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| 4 | float32_t * pSrc, |
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| 5 | float32_t scale, |
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| 6 | float32_t * pDst, |
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| 7 | uint32_t blockSize) |
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| 8 | { |
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| 9 | uint32_t i; |
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| 10 | |||
| 11 | for(i=0;i<blockSize;i++) |
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| 12 | { |
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| 13 | pDst[i] = pSrc[i] * scale; |
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| 14 | } |
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| 15 | } |
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| 16 | |||
| 17 | void ref_scale_q31( |
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| 18 | q31_t * pSrc, |
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| 19 | q31_t scaleFract, |
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| 20 | int8_t shift, |
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| 21 | q31_t * pDst, |
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| 22 | uint32_t blockSize) |
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| 23 | { |
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| 24 | uint32_t i; |
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| 25 | int8_t kShift = shift + 1; /* Shift to apply after scaling */ |
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| 26 | int8_t sign = (kShift & 0x80); |
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| 27 | q63_t temp; |
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| 28 | |||
| 29 | for(i=0;i<blockSize;i++) |
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| 30 | { |
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| 31 | temp = ((q63_t) pSrc[i] * scaleFract) >> 32; |
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| 32 | if (sign) |
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| 33 | pDst[i] = temp >> -kShift; |
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| 34 | else |
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| 35 | pDst[i] = ref_sat_q31( (q63_t)temp << kShift ); |
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| 36 | } |
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| 37 | } |
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| 38 | |||
| 39 | void ref_scale_q15( |
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| 40 | q15_t * pSrc, |
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| 41 | q15_t scaleFract, |
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| 42 | int8_t shift, |
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| 43 | q15_t * pDst, |
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| 44 | uint32_t blockSize) |
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| 45 | { |
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| 46 | uint32_t i; |
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| 47 | int8_t kShift = 15 - shift; /* Shift to apply after scaling */ |
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| 48 | |||
| 49 | for(i=0;i<blockSize;i++) |
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| 50 | { |
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| 51 | pDst[i] = ref_sat_q15(((q31_t) pSrc[i] * scaleFract) >> kShift); |
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| 52 | } |
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| 53 | } |
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| 54 | |||
| 55 | void ref_scale_q7( |
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| 56 | q7_t * pSrc, |
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| 57 | q7_t scaleFract, |
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| 58 | int8_t shift, |
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| 59 | q7_t * pDst, |
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| 60 | uint32_t blockSize) |
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| 61 | { |
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| 62 | uint32_t i; |
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| 63 | int8_t kShift = 7 - shift; /* Shift to apply after scaling */ |
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| 64 | |||
| 65 | for(i=0;i<blockSize;i++) |
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| 66 | { |
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| 67 | pDst[i] = ref_sat_q7(((q15_t) pSrc[i] * scaleFract) >> kShift); |
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| 68 | } |
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| 69 | } |