Smart Remote 3 nRF52 v1.2
26 #ifndef KISS_FFT_GUTS_H
27 #define KISS_FFT_GUTS_H
48 #define SAMP_MAX 2147483647
49 #define TWID_MAX 32767
50 #define TRIG_UPSCALE 1
52 #define SAMP_MIN -SAMP_MAX
55 # define S_MUL(a,b) MULT16_32_Q15(b, a)
57 # define C_MUL(m,a,b) \
58 do{ (m).r = SUB32_ovflw(S_MUL((a).r,(b).r) , S_MUL((a).i,(b).i)); \
59 (m).i = ADD32_ovflw(S_MUL((a).r,(b).i) , S_MUL((a).i,(b).r)); }while(0)
61 # define C_MULC(m,a,b) \
62 do{ (m).r = ADD32_ovflw(S_MUL((a).r,(b).r) , S_MUL((a).i,(b).i)); \
63 (m).i = SUB32_ovflw(S_MUL((a).i,(b).r) , S_MUL((a).r,(b).i)); }while(0)
65 # define C_MULBYSCALAR( c, s ) \
66 do{ (c).r = S_MUL( (c).r , s ) ;\
67 (c).i = S_MUL( (c).i , s ) ; }while(0)
69 # define DIVSCALAR(x,k) \
70 (x) = S_MUL( x, (TWID_MAX-((k)>>1))/(k)+1 )
72 # define C_FIXDIV(c,div) \
73 do { DIVSCALAR( (c).r , div); \
74 DIVSCALAR( (c).i , div); }while (0)
76 #define C_ADD( res, a,b)\
77 do {(res).r=ADD32_ovflw((a).r,(b).r); (res).i=ADD32_ovflw((a).i,(b).i); \
79 #define C_SUB( res, a,b)\
80 do {(res).r=SUB32_ovflw((a).r,(b).r); (res).i=SUB32_ovflw((a).i,(b).i); \
82 #define C_ADDTO( res , a)\
83 do {(res).r = ADD32_ovflw((res).r, (a).r); (res).i = ADD32_ovflw((res).i,(a).i);\
86 #define C_SUBFROM( res , a)\
87 do {(res).r = ADD32_ovflw((res).r,(a).r); (res).i = SUB32_ovflw((res).i,(a).i); \
90 #if defined(OPUS_ARM_INLINE_ASM)
91 #include "arm/kiss_fft_armv4.h"
94 #if defined(OPUS_ARM_INLINE_EDSP)
95 #include "arm/kiss_fft_armv5e.h"
97 #if defined(MIPSr1_ASM)
98 #include "mips/kiss_fft_mipsr1.h"
103 # define S_MUL(a,b) ( (a)*(b) )
104 #define C_MUL(m,a,b) \
105 do{ (m).r = (a).r*(b).r - (a).i*(b).i;\
106 (m).i = (a).r*(b).i + (a).i*(b).r; }while(0)
107 #define C_MULC(m,a,b) \
108 do{ (m).r = (a).r*(b).r + (a).i*(b).i;\
109 (m).i = (a).i*(b).r - (a).r*(b).i; }while(0)
111 #define C_MUL4(m,a,b) C_MUL(m,a,b)
113 # define C_FIXDIV(c,div)
114 # define C_MULBYSCALAR( c, s ) \
116 (c).i *= (s); }while(0)
119 #ifndef CHECK_OVERFLOW_OP
120 # define CHECK_OVERFLOW_OP(a,op,b)
124 #define C_ADD( res, a,b)\
126 CHECK_OVERFLOW_OP((a).r,+,(b).r)\
127 CHECK_OVERFLOW_OP((a).i,+,(b).i)\
128 (res).r=(a).r+(b).r; (res).i=(a).i+(b).i; \
130 #define C_SUB( res, a,b)\
132 CHECK_OVERFLOW_OP((a).r,-,(b).r)\
133 CHECK_OVERFLOW_OP((a).i,-,(b).i)\
134 (res).r=(a).r-(b).r; (res).i=(a).i-(b).i; \
136 #define C_ADDTO( res , a)\
138 CHECK_OVERFLOW_OP((res).r,+,(a).r)\
139 CHECK_OVERFLOW_OP((res).i,+,(a).i)\
140 (res).r += (a).r; (res).i += (a).i;\
143 #define C_SUBFROM( res , a)\
145 CHECK_OVERFLOW_OP((res).r,-,(a).r)\
146 CHECK_OVERFLOW_OP((res).i,-,(a).i)\
147 (res).r -= (a).r; (res).i -= (a).i; \
154 # define KISS_FFT_COS(phase) floor(.5+TWID_MAX*cos (phase))
155 # define KISS_FFT_SIN(phase) floor(.5+TWID_MAX*sin (phase))
156 # define HALF_OF(x) ((x)>>1)
157 #elif defined(USE_SIMD)
158 # define KISS_FFT_COS(phase) _mm_set1_ps( cos(phase) )
159 # define KISS_FFT_SIN(phase) _mm_set1_ps( sin(phase) )
160 # define HALF_OF(x) ((x)*_mm_set1_ps(.5f))
162 # define KISS_FFT_COS(phase) (kiss_fft_scalar) cos(phase)
163 # define KISS_FFT_SIN(phase) (kiss_fft_scalar) sin(phase)
164 # define HALF_OF(x) ((x)*.5f)
167 #define kf_cexp(x,phase) \
169 (x)->r = KISS_FFT_COS(phase);\
170 (x)->i = KISS_FFT_SIN(phase);\
173 #define kf_cexp2(x,phase) \
175 (x)->r = TRIG_UPSCALE*celt_cos_norm((phase));\
176 (x)->i = TRIG_UPSCALE*celt_cos_norm((phase)-32768);\