cannam@154: /*Copyright (c) 2003-2004, Mark Borgerding cannam@154: cannam@154: All rights reserved. cannam@154: cannam@154: Redistribution and use in source and binary forms, with or without cannam@154: modification, are permitted provided that the following conditions are met: cannam@154: cannam@154: * Redistributions of source code must retain the above copyright notice, cannam@154: this list of conditions and the following disclaimer. cannam@154: * Redistributions in binary form must reproduce the above copyright notice, cannam@154: this list of conditions and the following disclaimer in the cannam@154: documentation and/or other materials provided with the distribution. cannam@154: cannam@154: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" cannam@154: AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE cannam@154: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE cannam@154: ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE cannam@154: LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR cannam@154: CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF cannam@154: SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS cannam@154: INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN cannam@154: CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) cannam@154: ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE cannam@154: POSSIBILITY OF SUCH DAMAGE.*/ cannam@154: cannam@154: #ifndef KISS_FFT_GUTS_H cannam@154: #define KISS_FFT_GUTS_H cannam@154: cannam@154: #define MIN(a,b) ((a)<(b) ? (a):(b)) cannam@154: #define MAX(a,b) ((a)>(b) ? (a):(b)) cannam@154: cannam@154: /* kiss_fft.h cannam@154: defines kiss_fft_scalar as either short or a float type cannam@154: and defines cannam@154: typedef struct { kiss_fft_scalar r; kiss_fft_scalar i; }kiss_fft_cpx; */ cannam@154: #include "kiss_fft.h" cannam@154: cannam@154: /* cannam@154: Explanation of macros dealing with complex math: cannam@154: cannam@154: C_MUL(m,a,b) : m = a*b cannam@154: C_FIXDIV( c , div ) : if a fixed point impl., c /= div. noop otherwise cannam@154: C_SUB( res, a,b) : res = a - b cannam@154: C_SUBFROM( res , a) : res -= a cannam@154: C_ADDTO( res , a) : res += a cannam@154: * */ cannam@154: #ifdef FIXED_POINT cannam@154: #include "arch.h" cannam@154: cannam@154: cannam@154: #define SAMP_MAX 2147483647 cannam@154: #define TWID_MAX 32767 cannam@154: #define TRIG_UPSCALE 1 cannam@154: cannam@154: #define SAMP_MIN -SAMP_MAX cannam@154: cannam@154: cannam@154: # define S_MUL(a,b) MULT16_32_Q15(b, a) cannam@154: cannam@154: # define C_MUL(m,a,b) \ cannam@154: do{ (m).r = SUB32_ovflw(S_MUL((a).r,(b).r) , S_MUL((a).i,(b).i)); \ cannam@154: (m).i = ADD32_ovflw(S_MUL((a).r,(b).i) , S_MUL((a).i,(b).r)); }while(0) cannam@154: cannam@154: # define C_MULC(m,a,b) \ cannam@154: do{ (m).r = ADD32_ovflw(S_MUL((a).r,(b).r) , S_MUL((a).i,(b).i)); \ cannam@154: (m).i = SUB32_ovflw(S_MUL((a).i,(b).r) , S_MUL((a).r,(b).i)); }while(0) cannam@154: cannam@154: # define C_MULBYSCALAR( c, s ) \ cannam@154: do{ (c).r = S_MUL( (c).r , s ) ;\ cannam@154: (c).i = S_MUL( (c).i , s ) ; }while(0) cannam@154: cannam@154: # define DIVSCALAR(x,k) \ cannam@154: (x) = S_MUL( x, (TWID_MAX-((k)>>1))/(k)+1 ) cannam@154: cannam@154: # define C_FIXDIV(c,div) \ cannam@154: do { DIVSCALAR( (c).r , div); \ cannam@154: DIVSCALAR( (c).i , div); }while (0) cannam@154: cannam@154: #define C_ADD( res, a,b)\ cannam@154: do {(res).r=ADD32_ovflw((a).r,(b).r); (res).i=ADD32_ovflw((a).i,(b).i); \ cannam@154: }while(0) cannam@154: #define C_SUB( res, a,b)\ cannam@154: do {(res).r=SUB32_ovflw((a).r,(b).r); (res).i=SUB32_ovflw((a).i,(b).i); \ cannam@154: }while(0) cannam@154: #define C_ADDTO( res , a)\ cannam@154: do {(res).r = ADD32_ovflw((res).r, (a).r); (res).i = ADD32_ovflw((res).i,(a).i);\ cannam@154: }while(0) cannam@154: cannam@154: #define C_SUBFROM( res , a)\ cannam@154: do {(res).r = ADD32_ovflw((res).r,(a).r); (res).i = SUB32_ovflw((res).i,(a).i); \ cannam@154: }while(0) cannam@154: cannam@154: #if defined(OPUS_ARM_INLINE_ASM) cannam@154: #include "arm/kiss_fft_armv4.h" cannam@154: #endif cannam@154: cannam@154: #if defined(OPUS_ARM_INLINE_EDSP) cannam@154: #include "arm/kiss_fft_armv5e.h" cannam@154: #endif cannam@154: #if defined(MIPSr1_ASM) cannam@154: #include "mips/kiss_fft_mipsr1.h" cannam@154: #endif cannam@154: cannam@154: #else /* not FIXED_POINT*/ cannam@154: cannam@154: # define S_MUL(a,b) ( (a)*(b) ) cannam@154: #define C_MUL(m,a,b) \ cannam@154: do{ (m).r = (a).r*(b).r - (a).i*(b).i;\ cannam@154: (m).i = (a).r*(b).i + (a).i*(b).r; }while(0) cannam@154: #define C_MULC(m,a,b) \ cannam@154: do{ (m).r = (a).r*(b).r + (a).i*(b).i;\ cannam@154: (m).i = (a).i*(b).r - (a).r*(b).i; }while(0) cannam@154: cannam@154: #define C_MUL4(m,a,b) C_MUL(m,a,b) cannam@154: cannam@154: # define C_FIXDIV(c,div) /* NOOP */ cannam@154: # define C_MULBYSCALAR( c, s ) \ cannam@154: do{ (c).r *= (s);\ cannam@154: (c).i *= (s); }while(0) cannam@154: #endif cannam@154: cannam@154: #ifndef CHECK_OVERFLOW_OP cannam@154: # define CHECK_OVERFLOW_OP(a,op,b) /* noop */ cannam@154: #endif cannam@154: cannam@154: #ifndef C_ADD cannam@154: #define C_ADD( res, a,b)\ cannam@154: do { \ cannam@154: CHECK_OVERFLOW_OP((a).r,+,(b).r)\ cannam@154: CHECK_OVERFLOW_OP((a).i,+,(b).i)\ cannam@154: (res).r=(a).r+(b).r; (res).i=(a).i+(b).i; \ cannam@154: }while(0) cannam@154: #define C_SUB( res, a,b)\ cannam@154: do { \ cannam@154: CHECK_OVERFLOW_OP((a).r,-,(b).r)\ cannam@154: CHECK_OVERFLOW_OP((a).i,-,(b).i)\ cannam@154: (res).r=(a).r-(b).r; (res).i=(a).i-(b).i; \ cannam@154: }while(0) cannam@154: #define C_ADDTO( res , a)\ cannam@154: do { \ cannam@154: CHECK_OVERFLOW_OP((res).r,+,(a).r)\ cannam@154: CHECK_OVERFLOW_OP((res).i,+,(a).i)\ cannam@154: (res).r += (a).r; (res).i += (a).i;\ cannam@154: }while(0) cannam@154: cannam@154: #define C_SUBFROM( res , a)\ cannam@154: do {\ cannam@154: CHECK_OVERFLOW_OP((res).r,-,(a).r)\ cannam@154: CHECK_OVERFLOW_OP((res).i,-,(a).i)\ cannam@154: (res).r -= (a).r; (res).i -= (a).i; \ cannam@154: }while(0) cannam@154: #endif /* C_ADD defined */ cannam@154: cannam@154: #ifdef FIXED_POINT cannam@154: /*# define KISS_FFT_COS(phase) TRIG_UPSCALE*floor(MIN(32767,MAX(-32767,.5+32768 * cos (phase)))) cannam@154: # define KISS_FFT_SIN(phase) TRIG_UPSCALE*floor(MIN(32767,MAX(-32767,.5+32768 * sin (phase))))*/ cannam@154: # define KISS_FFT_COS(phase) floor(.5+TWID_MAX*cos (phase)) cannam@154: # define KISS_FFT_SIN(phase) floor(.5+TWID_MAX*sin (phase)) cannam@154: # define HALF_OF(x) ((x)>>1) cannam@154: #elif defined(USE_SIMD) cannam@154: # define KISS_FFT_COS(phase) _mm_set1_ps( cos(phase) ) cannam@154: # define KISS_FFT_SIN(phase) _mm_set1_ps( sin(phase) ) cannam@154: # define HALF_OF(x) ((x)*_mm_set1_ps(.5f)) cannam@154: #else cannam@154: # define KISS_FFT_COS(phase) (kiss_fft_scalar) cos(phase) cannam@154: # define KISS_FFT_SIN(phase) (kiss_fft_scalar) sin(phase) cannam@154: # define HALF_OF(x) ((x)*.5f) cannam@154: #endif cannam@154: cannam@154: #define kf_cexp(x,phase) \ cannam@154: do{ \ cannam@154: (x)->r = KISS_FFT_COS(phase);\ cannam@154: (x)->i = KISS_FFT_SIN(phase);\ cannam@154: }while(0) cannam@154: cannam@154: #define kf_cexp2(x,phase) \ cannam@154: do{ \ cannam@154: (x)->r = TRIG_UPSCALE*celt_cos_norm((phase));\ cannam@154: (x)->i = TRIG_UPSCALE*celt_cos_norm((phase)-32768);\ cannam@154: }while(0) cannam@154: cannam@154: #endif /* KISS_FFT_GUTS_H */