/*
-Copyright (c) 2003-2004, Mark Borgerding
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
- * Neither the author nor the names of any contributors may be used to endorse or promote products derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
+ * Copyright (c) 2003-2010, Mark Borgerding. All rights reserved.
+ * This file is part of KISS FFT - https://github.com/mborgerding/kissfft
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * See COPYING file for more information.
+ */
-/* kiss_fft.h
+/* kiss_fft_f32.h
defines kiss_fft_f32_scalar as either short or a float type
and defines
typedef struct { kiss_fft_f32_scalar r; kiss_fft_f32_scalar i; }kiss_fft_f32_cpx; */
C_SUBFROM( res , a) : res -= a
C_ADDTO( res , a) : res += a
* */
+#ifdef FIXED_POINT
+#include <stdint.h>
+#if (FIXED_POINT==32)
+# define FRACBITS 31
+# define SAMPPROD int64_t
+#define SAMP_MAX INT32_MAX
+#define SAMP_MIN INT32_MIN
+#else
+# define FRACBITS 15
+# define SAMPPROD int32_t
+#define SAMP_MAX INT16_MAX
+#define SAMP_MIN INT16_MIN
+#endif
+
+#if defined(CHECK_OVERFLOW)
+# define CHECK_OVERFLOW_OP(a,op,b) \
+ if ( (SAMPPROD)(a) op (SAMPPROD)(b) > SAMP_MAX || (SAMPPROD)(a) op (SAMPPROD)(b) < SAMP_MIN ) { \
+ g_critical("overflow @ " __FILE__ "(%d): (%d " #op" %d) = %ld",__LINE__,(a),(b),(SAMPPROD)(a) op (SAMPPROD)(b) ); }
+#endif
+
+
+# define smul(a,b) ( (SAMPPROD)(a)*(b) )
+# define sround( x ) (kiss_fft_f32_scalar)( ( (x) + (1<<(FRACBITS-1)) ) >> FRACBITS )
-#define S_MUL(a,b) ( (a)*(b) )
+# define S_MUL(a,b) sround( smul(a,b) )
+
+# define C_MUL(m,a,b) \
+ do{ (m).r = sround( smul((a).r,(b).r) - smul((a).i,(b).i) ); \
+ (m).i = sround( smul((a).r,(b).i) + smul((a).i,(b).r) ); }while(0)
+
+# define DIVSCALAR(x,k) \
+ (x) = sround( smul( x, SAMP_MAX/k ) )
+
+# define C_FIXDIV(c,div) \
+ do { DIVSCALAR( (c).r , div); \
+ DIVSCALAR( (c).i , div); }while (0)
+
+# define C_MULBYSCALAR( c, s ) \
+ do{ (c).r = sround( smul( (c).r , s ) ) ;\
+ (c).i = sround( smul( (c).i , s ) ) ; }while(0)
+
+#else /* not FIXED_POINT*/
+
+# define S_MUL(a,b) ( (a)*(b) )
#define C_MUL(m,a,b) \
do{ (m).r = (a).r*(b).r - (a).i*(b).i;\
(m).i = (a).r*(b).i + (a).i*(b).r; }while(0)
-#define C_FIXDIV(c,div) /* NOOP */
-#define C_MULBYSCALAR( c, s ) \
+# define C_FIXDIV(c,div) /* NOOP */
+# define C_MULBYSCALAR( c, s ) \
do{ (c).r *= (s);\
(c).i *= (s); }while(0)
+#endif
#ifndef CHECK_OVERFLOW_OP
# define CHECK_OVERFLOW_OP(a,op,b) /* noop */
}while(0)
-#define KISS_FFT_F32_COS(phase) (kiss_fft_f32_scalar) cos(phase)
-#define KISS_FFT_F32_SIN(phase) (kiss_fft_f32_scalar) sin(phase)
-#define HALF_OF(x) ((x)*.5)
+#ifdef FIXED_POINT
+# define KISS_FFT_F32_COS(phase) floor(.5+SAMP_MAX * cos (phase))
+# define KISS_FFT_F32_SIN(phase) floor(.5+SAMP_MAX * sin (phase))
+# define HALF_OF(x) ((x)>>1)
+#elif defined(USE_SIMD)
+# define KISS_FFT_F32_COS(phase) _mm_set1_ps( cos(phase) )
+# define KISS_FFT_F32_SIN(phase) _mm_set1_ps( sin(phase) )
+# define HALF_OF(x) ((x)*_mm_set1_ps(.5))
+#else
+# define KISS_FFT_F32_COS(phase) (kiss_fft_f32_scalar) cos(phase)
+# define KISS_FFT_F32_SIN(phase) (kiss_fft_f32_scalar) sin(phase)
+# define HALF_OF(x) ((x)*.5)
+#endif
#define kf_cexp(x,phase) \
do{ \
/* a debugging function */
#define pcpx(c)\
fprintf(stderr,"%g + %gi\n",(double)((c)->r),(double)((c)->i) )
+
+
+#ifdef KISS_FFT_F32_USE_ALLOCA
+// define this to allow use of alloca instead of malloc for temporary buffers
+// Temporary buffers are used in two case:
+// 1. FFT sizes that have "bad" factors. i.e. not 2,3 and 5
+// 2. "in-place" FFTs. Notice the quotes, since kissfft does not really do an in-place transform.
+#include <alloca.h>
+#define KISS_FFT_F32_TMP_ALLOC(nbytes) alloca(nbytes)
+#define KISS_FFT_F32_TMP_FREE(ptr)
+#else
+#define KISS_FFT_F32_TMP_ALLOC(nbytes) KISS_FFT_F32_MALLOC(nbytes)
+#define KISS_FFT_F32_TMP_FREE(ptr) KISS_FFT_F32_FREE(ptr)
+#endif
/*
-Copyright (c) 2003-2004, Mark Borgerding
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
- * Neither the author nor the names of any contributors may be used to endorse or promote products derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
+ * Copyright (c) 2003-2010, Mark Borgerding. All rights reserved.
+ * This file is part of KISS FFT - https://github.com/mborgerding/kissfft
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * See COPYING file for more information.
+ */
-/* kiss_fft.h
+/* kiss_fft_f64.h
defines kiss_fft_f64_scalar as either short or a float type
and defines
typedef struct { kiss_fft_f64_scalar r; kiss_fft_f64_scalar i; }kiss_fft_f64_cpx; */
C_SUBFROM( res , a) : res -= a
C_ADDTO( res , a) : res += a
* */
+#ifdef FIXED_POINT
+#include <stdint.h>
+#if (FIXED_POINT==32)
+# define FRACBITS 31
+# define SAMPPROD int64_t
+#define SAMP_MAX INT32_MAX
+#define SAMP_MIN INT32_MIN
+#else
+# define FRACBITS 15
+# define SAMPPROD int32_t
+#define SAMP_MAX INT16_MAX
+#define SAMP_MIN INT16_MIN
+#endif
+
+#if defined(CHECK_OVERFLOW)
+# define CHECK_OVERFLOW_OP(a,op,b) \
+ if ( (SAMPPROD)(a) op (SAMPPROD)(b) > SAMP_MAX || (SAMPPROD)(a) op (SAMPPROD)(b) < SAMP_MIN ) { \
+ g_critical("overflow @ " __FILE__ "(%d): (%d " #op" %d) = %ld",__LINE__,(a),(b),(SAMPPROD)(a) op (SAMPPROD)(b) ); }
+#endif
+
+
+# define smul(a,b) ( (SAMPPROD)(a)*(b) )
+# define sround( x ) (kiss_fft_f64_scalar)( ( (x) + (1<<(FRACBITS-1)) ) >> FRACBITS )
-#define S_MUL(a,b) ( (a)*(b) )
+# define S_MUL(a,b) sround( smul(a,b) )
+
+# define C_MUL(m,a,b) \
+ do{ (m).r = sround( smul((a).r,(b).r) - smul((a).i,(b).i) ); \
+ (m).i = sround( smul((a).r,(b).i) + smul((a).i,(b).r) ); }while(0)
+
+# define DIVSCALAR(x,k) \
+ (x) = sround( smul( x, SAMP_MAX/k ) )
+
+# define C_FIXDIV(c,div) \
+ do { DIVSCALAR( (c).r , div); \
+ DIVSCALAR( (c).i , div); }while (0)
+
+# define C_MULBYSCALAR( c, s ) \
+ do{ (c).r = sround( smul( (c).r , s ) ) ;\
+ (c).i = sround( smul( (c).i , s ) ) ; }while(0)
+
+#else /* not FIXED_POINT*/
+
+# define S_MUL(a,b) ( (a)*(b) )
#define C_MUL(m,a,b) \
do{ (m).r = (a).r*(b).r - (a).i*(b).i;\
(m).i = (a).r*(b).i + (a).i*(b).r; }while(0)
-#define C_FIXDIV(c,div) /* NOOP */
-#define C_MULBYSCALAR( c, s ) \
+# define C_FIXDIV(c,div) /* NOOP */
+# define C_MULBYSCALAR( c, s ) \
do{ (c).r *= (s);\
(c).i *= (s); }while(0)
+#endif
#ifndef CHECK_OVERFLOW_OP
# define CHECK_OVERFLOW_OP(a,op,b) /* noop */
}while(0)
-#define KISS_FFT_F64_COS(phase) (kiss_fft_f64_scalar) cos(phase)
-#define KISS_FFT_F64_SIN(phase) (kiss_fft_f64_scalar) sin(phase)
-#define HALF_OF(x) ((x)*.5)
+#ifdef FIXED_POINT
+# define KISS_FFT_F64_COS(phase) floor(.5+SAMP_MAX * cos (phase))
+# define KISS_FFT_F64_SIN(phase) floor(.5+SAMP_MAX * sin (phase))
+# define HALF_OF(x) ((x)>>1)
+#elif defined(USE_SIMD)
+# define KISS_FFT_F64_COS(phase) _mm_set1_ps( cos(phase) )
+# define KISS_FFT_F64_SIN(phase) _mm_set1_ps( sin(phase) )
+# define HALF_OF(x) ((x)*_mm_set1_ps(.5))
+#else
+# define KISS_FFT_F64_COS(phase) (kiss_fft_f64_scalar) cos(phase)
+# define KISS_FFT_F64_SIN(phase) (kiss_fft_f64_scalar) sin(phase)
+# define HALF_OF(x) ((x)*.5)
+#endif
#define kf_cexp(x,phase) \
do{ \
/* a debugging function */
#define pcpx(c)\
fprintf(stderr,"%g + %gi\n",(double)((c)->r),(double)((c)->i) )
+
+
+#ifdef KISS_FFT_F64_USE_ALLOCA
+// define this to allow use of alloca instead of malloc for temporary buffers
+// Temporary buffers are used in two case:
+// 1. FFT sizes that have "bad" factors. i.e. not 2,3 and 5
+// 2. "in-place" FFTs. Notice the quotes, since kissfft does not really do an in-place transform.
+#include <alloca.h>
+#define KISS_FFT_F64_TMP_ALLOC(nbytes) alloca(nbytes)
+#define KISS_FFT_F64_TMP_FREE(ptr)
+#else
+#define KISS_FFT_F64_TMP_ALLOC(nbytes) KISS_FFT_F64_MALLOC(nbytes)
+#define KISS_FFT_F64_TMP_FREE(ptr) KISS_FFT_F64_FREE(ptr)
+#endif
/*
-Copyright (c) 2003-2004, Mark Borgerding
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
- * Neither the author nor the names of any contributors may be used to endorse or promote products derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
+ * Copyright (c) 2003-2010, Mark Borgerding. All rights reserved.
+ * This file is part of KISS FFT - https://github.com/mborgerding/kissfft
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * See COPYING file for more information.
+ */
-/* kiss_fft.h
+/* kiss_fft_s16.h
defines kiss_fft_s16_scalar as either short or a float type
and defines
typedef struct { kiss_fft_s16_scalar r; kiss_fft_s16_scalar i; }kiss_fft_s16_cpx; */
C_SUBFROM( res , a) : res -= a
C_ADDTO( res , a) : res += a
* */
-#define FRACBITS 15
-#define SAMPPROD int32_t
-#define SAMP_MAX 32767
-
-#define SAMP_MIN -SAMP_MAX
+#ifdef FIXED_POINT
+#include <stdint.h>
+#if (FIXED_POINT==32)
+# define FRACBITS 31
+# define SAMPPROD int64_t
+#define SAMP_MAX INT32_MAX
+#define SAMP_MIN INT32_MIN
+#else
+# define FRACBITS 15
+# define SAMPPROD int32_t
+#define SAMP_MAX INT16_MAX
+#define SAMP_MIN INT16_MIN
+#endif
#if defined(CHECK_OVERFLOW)
# define CHECK_OVERFLOW_OP(a,op,b) \
if ( (SAMPPROD)(a) op (SAMPPROD)(b) > SAMP_MAX || (SAMPPROD)(a) op (SAMPPROD)(b) < SAMP_MIN ) { \
- fprintf(stderr,"WARNING:overflow @ " __FILE__ "(%d): (%d " #op" %d) = %ld\n",__LINE__,(a),(b),(SAMPPROD)(a) op (SAMPPROD)(b) ); }
+ g_critical("overflow @ " __FILE__ "(%d): (%d " #op" %d) = %ld",__LINE__,(a),(b),(SAMPPROD)(a) op (SAMPPROD)(b) ); }
#endif
do{ (c).r = sround( smul( (c).r , s ) ) ;\
(c).i = sround( smul( (c).i , s ) ) ; }while(0)
+#else /* not FIXED_POINT*/
+
+# define S_MUL(a,b) ( (a)*(b) )
+#define C_MUL(m,a,b) \
+ do{ (m).r = (a).r*(b).r - (a).i*(b).i;\
+ (m).i = (a).r*(b).i + (a).i*(b).r; }while(0)
+# define C_FIXDIV(c,div) /* NOOP */
+# define C_MULBYSCALAR( c, s ) \
+ do{ (c).r *= (s);\
+ (c).i *= (s); }while(0)
+#endif
+
#ifndef CHECK_OVERFLOW_OP
# define CHECK_OVERFLOW_OP(a,op,b) /* noop */
#endif
}while(0)
+#ifdef FIXED_POINT
# define KISS_FFT_S16_COS(phase) floor(.5+SAMP_MAX * cos (phase))
# define KISS_FFT_S16_SIN(phase) floor(.5+SAMP_MAX * sin (phase))
# define HALF_OF(x) ((x)>>1)
+#elif defined(USE_SIMD)
+# define KISS_FFT_S16_COS(phase) _mm_set1_ps( cos(phase) )
+# define KISS_FFT_S16_SIN(phase) _mm_set1_ps( sin(phase) )
+# define HALF_OF(x) ((x)*_mm_set1_ps(.5))
+#else
+# define KISS_FFT_S16_COS(phase) (kiss_fft_s16_scalar) cos(phase)
+# define KISS_FFT_S16_SIN(phase) (kiss_fft_s16_scalar) sin(phase)
+# define HALF_OF(x) ((x)*.5)
+#endif
#define kf_cexp(x,phase) \
do{ \
/* a debugging function */
#define pcpx(c)\
fprintf(stderr,"%g + %gi\n",(double)((c)->r),(double)((c)->i) )
+
+
+#ifdef KISS_FFT_S16_USE_ALLOCA
+// define this to allow use of alloca instead of malloc for temporary buffers
+// Temporary buffers are used in two case:
+// 1. FFT sizes that have "bad" factors. i.e. not 2,3 and 5
+// 2. "in-place" FFTs. Notice the quotes, since kissfft does not really do an in-place transform.
+#include <alloca.h>
+#define KISS_FFT_S16_TMP_ALLOC(nbytes) alloca(nbytes)
+#define KISS_FFT_S16_TMP_FREE(ptr)
+#else
+#define KISS_FFT_S16_TMP_ALLOC(nbytes) KISS_FFT_S16_MALLOC(nbytes)
+#define KISS_FFT_S16_TMP_FREE(ptr) KISS_FFT_S16_FREE(ptr)
+#endif
/*
-Copyright (c) 2003-2004, Mark Borgerding
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
- * Neither the author nor the names of any contributors may be used to endorse or promote products derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
+ * Copyright (c) 2003-2010, Mark Borgerding. All rights reserved.
+ * This file is part of KISS FFT - https://github.com/mborgerding/kissfft
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * See COPYING file for more information.
+ */
-/* kiss_fft.h
+/* kiss_fft_s32.h
defines kiss_fft_s32_scalar as either short or a float type
and defines
typedef struct { kiss_fft_s32_scalar r; kiss_fft_s32_scalar i; }kiss_fft_s32_cpx; */
C_SUBFROM( res , a) : res -= a
C_ADDTO( res , a) : res += a
* */
-
-#define FRACBITS 31
-#define SAMPPROD int64_t
-#define SAMP_MAX 2147483647
-
-#define SAMP_MIN -SAMP_MAX
+#ifdef FIXED_POINT
+#include <stdint.h>
+#if (FIXED_POINT==32)
+# define FRACBITS 31
+# define SAMPPROD int64_t
+#define SAMP_MAX INT32_MAX
+#define SAMP_MIN INT32_MIN
+#else
+# define FRACBITS 15
+# define SAMPPROD int32_t
+#define SAMP_MAX INT16_MAX
+#define SAMP_MIN INT16_MIN
+#endif
#if defined(CHECK_OVERFLOW)
# define CHECK_OVERFLOW_OP(a,op,b) \
if ( (SAMPPROD)(a) op (SAMPPROD)(b) > SAMP_MAX || (SAMPPROD)(a) op (SAMPPROD)(b) < SAMP_MIN ) { \
- fprintf(stderr,"WARNING:overflow @ " __FILE__ "(%d): (%d " #op" %d) = %ld\n",__LINE__,(a),(b),(SAMPPROD)(a) op (SAMPPROD)(b) ); }
+ g_critical("overflow @ " __FILE__ "(%d): (%d " #op" %d) = %ld",__LINE__,(a),(b),(SAMPPROD)(a) op (SAMPPROD)(b) ); }
#endif
do{ (c).r = sround( smul( (c).r , s ) ) ;\
(c).i = sround( smul( (c).i , s ) ) ; }while(0)
+#else /* not FIXED_POINT*/
+
+# define S_MUL(a,b) ( (a)*(b) )
+#define C_MUL(m,a,b) \
+ do{ (m).r = (a).r*(b).r - (a).i*(b).i;\
+ (m).i = (a).r*(b).i + (a).i*(b).r; }while(0)
+# define C_FIXDIV(c,div) /* NOOP */
+# define C_MULBYSCALAR( c, s ) \
+ do{ (c).r *= (s);\
+ (c).i *= (s); }while(0)
+#endif
+
#ifndef CHECK_OVERFLOW_OP
# define CHECK_OVERFLOW_OP(a,op,b) /* noop */
#endif
}while(0)
+#ifdef FIXED_POINT
# define KISS_FFT_S32_COS(phase) floor(.5+SAMP_MAX * cos (phase))
# define KISS_FFT_S32_SIN(phase) floor(.5+SAMP_MAX * sin (phase))
# define HALF_OF(x) ((x)>>1)
+#elif defined(USE_SIMD)
+# define KISS_FFT_S32_COS(phase) _mm_set1_ps( cos(phase) )
+# define KISS_FFT_S32_SIN(phase) _mm_set1_ps( sin(phase) )
+# define HALF_OF(x) ((x)*_mm_set1_ps(.5))
+#else
+# define KISS_FFT_S32_COS(phase) (kiss_fft_s32_scalar) cos(phase)
+# define KISS_FFT_S32_SIN(phase) (kiss_fft_s32_scalar) sin(phase)
+# define HALF_OF(x) ((x)*.5)
+#endif
#define kf_cexp(x,phase) \
do{ \
/* a debugging function */
#define pcpx(c)\
fprintf(stderr,"%g + %gi\n",(double)((c)->r),(double)((c)->i) )
+
+
+#ifdef KISS_FFT_S32_USE_ALLOCA
+// define this to allow use of alloca instead of malloc for temporary buffers
+// Temporary buffers are used in two case:
+// 1. FFT sizes that have "bad" factors. i.e. not 2,3 and 5
+// 2. "in-place" FFTs. Notice the quotes, since kissfft does not really do an in-place transform.
+#include <alloca.h>
+#define KISS_FFT_S32_TMP_ALLOC(nbytes) alloca(nbytes)
+#define KISS_FFT_S32_TMP_FREE(ptr)
+#else
+#define KISS_FFT_S32_TMP_ALLOC(nbytes) KISS_FFT_S32_MALLOC(nbytes)
+#define KISS_FFT_S32_TMP_FREE(ptr) KISS_FFT_S32_FREE(ptr)
+#endif
/*
-Copyright (c) 2003-2004, Mark Borgerding
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
- * Neither the author nor the names of any contributors may be used to endorse or promote products derived from this software without specific prior written permission.
+ * Copyright (c) 2003-2010, Mark Borgerding. All rights reserved.
+ * This file is part of KISS FFT - https://github.com/mborgerding/kissfft
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * See COPYING file for more information.
+ */
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
#include "_kiss_fft_guts_f32.h"
/* The guts header contains all the multiplication and addition macros that are defined for
- fixed or floating point complex numbers. It also declares the kf_ internal functions.
+ fixed or floating point complex numbers. It also delares the kf_ internal functions.
*/
-static kiss_fft_f32_cpx *scratchbuf = NULL;
-static size_t nscratchbuf = 0;
-static kiss_fft_f32_cpx *tmpbuf = NULL;
-static size_t ntmpbuf = 0;
-
-#define CHECKBUF(buf,nbuf,n) \
- do { \
- if ( nbuf < (size_t)(n) ) {\
- free(buf); \
- buf = (kiss_fft_f32_cpx*)KISS_FFT_F32_MALLOC(sizeof(kiss_fft_f32_cpx)*(n)); \
- nbuf = (size_t)(n); \
- } \
- }while(0)
-
-
static void
kf_bfly2 (kiss_fft_f32_cpx * Fout,
const size_t fstride, const kiss_fft_f32_cfg st, int m)
kiss_fft_f32_cpx *Fout2;
kiss_fft_f32_cpx *tw1 = st->twiddles;
kiss_fft_f32_cpx t;
-
Fout2 = Fout + m;
do {
C_FIXDIV (*Fout, 2);
const size_t m2 = 2 * m;
const size_t m3 = 3 * m;
+
tw3 = tw2 = tw1 = st->twiddles;
do {
kiss_fft_f32_cpx *tw1, *tw2;
kiss_fft_f32_cpx scratch[5];
kiss_fft_f32_cpx epi3;
-
epi3 = st->twiddles[fstride * m];
tw1 = tw2 = st->twiddles;
kiss_fft_f32_cpx *twiddles = st->twiddles;
kiss_fft_f32_cpx *tw;
kiss_fft_f32_cpx ya, yb;
-
ya = twiddles[fstride * m];
yb = twiddles[fstride * 2 * m];
kiss_fft_f32_cpx t;
int Norig = st->nfft;
- CHECKBUF (scratchbuf, nscratchbuf, p);
+ kiss_fft_f32_cpx *scratch =
+ (kiss_fft_f32_cpx *) KISS_FFT_F32_TMP_ALLOC (sizeof (kiss_fft_f32_cpx) *
+ p);
for (u = 0; u < m; ++u) {
k = u;
for (q1 = 0; q1 < p; ++q1) {
- scratchbuf[q1] = Fout[k];
- C_FIXDIV (scratchbuf[q1], p);
+ scratch[q1] = Fout[k];
+ C_FIXDIV (scratch[q1], p);
k += m;
}
k = u;
for (q1 = 0; q1 < p; ++q1) {
int twidx = 0;
-
- Fout[k] = scratchbuf[0];
+ Fout[k] = scratch[0];
for (q = 1; q < p; ++q) {
twidx += fstride * k;
if (twidx >= Norig)
twidx -= Norig;
- C_MUL (t, scratchbuf[q], twiddles[twidx]);
+ C_MUL (t, scratch[q], twiddles[twidx]);
C_ADDTO (Fout[k], t);
}
k += m;
}
}
+ KISS_FFT_F32_TMP_FREE (scratch);
}
static void
kf_work (kiss_fft_f32_cpx * Fout,
const kiss_fft_f32_cpx * f,
- const size_t fstride,
- int in_stride, int *factors, const kiss_fft_f32_cfg st)
+ const size_t fstride, int in_stride, int *factors,
+ const kiss_fft_f32_cfg st)
{
kiss_fft_f32_cpx *Fout_beg = Fout;
const int p = *factors++; /* the radix */
#ifdef _OPENMP
// use openmp extensions at the
// top-level (not recursive)
- if (fstride == 1) {
+ if (fstride == 1 && p <= 5 && m != 1) {
int k;
// execute the p different work units in different threads
{
int p = 4;
double floor_sqrt;
-
floor_sqrt = floor (sqrt ((double) n));
/*factor out powers of 4, powers of 2, then any remaining primes */
* User-callable function to allocate all necessary storage space for the fft.
*
* The return value is a contiguous block of memory, allocated with malloc. As such,
- * It can be freed with free(), rather than a kiss_fft-specific function.
+ * It can be freed with free(), rather than a kiss_fft_f32-specific function.
* */
kiss_fft_f32_cfg
kiss_fft_f32_alloc (int nfft, int inverse_fft, void *mem, size_t * lenmem)
}
if (st) {
int i;
-
st->nfft = nfft;
st->inverse = inverse_fft;
const double pi =
3.141592653589793238462643383279502884197169399375105820974944;
double phase = -2 * pi * i / nfft;
-
if (st->inverse)
phase *= -1;
kf_cexp (st->twiddles + i, phase);
}
-
-
void
kiss_fft_f32_stride (kiss_fft_f32_cfg st, const kiss_fft_f32_cpx * fin,
kiss_fft_f32_cpx * fout, int in_stride)
{
if (fin == fout) {
- CHECKBUF (tmpbuf, ntmpbuf, st->nfft);
+ //NOTE: this is not really an in-place FFT algorithm.
+ //It just performs an out-of-place FFT into a temp buffer
+ kiss_fft_f32_cpx *tmpbuf =
+ (kiss_fft_f32_cpx *) KISS_FFT_F32_TMP_ALLOC (sizeof (kiss_fft_f32_cpx) *
+ st->nfft);
kf_work (tmpbuf, fin, 1, in_stride, st->factors, st);
memcpy (fout, tmpbuf, sizeof (kiss_fft_f32_cpx) * st->nfft);
+ KISS_FFT_F32_TMP_FREE (tmpbuf);
} else {
kf_work (fout, fin, 1, in_stride, st->factors, st);
}
}
-/* not really necessary to call, but if someone is doing in-place ffts, they may want to free the
- buffers from CHECKBUF
- */
void
kiss_fft_f32_cleanup (void)
{
- free (scratchbuf);
- scratchbuf = NULL;
- nscratchbuf = 0;
- free (tmpbuf);
- tmpbuf = NULL;
- ntmpbuf = 0;
+ // nothing needed any more
}
int
{
while (1) {
int m = n;
-
while ((m % 2) == 0)
m /= 2;
while ((m % 3) == 0)
+/*
+ * Copyright (c) 2003-2010, Mark Borgerding. All rights reserved.
+ * This file is part of KISS FFT - https://github.com/mborgerding/kissfft
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * See COPYING file for more information.
+ */
+
#ifndef KISS_FFT_F32_H
#define KISS_FFT_F32_H
#include <stdio.h>
#include <math.h>
#include <string.h>
+#include <stdint.h>
#include <glib.h>
#ifdef __cplusplus
-- a command-line utility to perform ffts
-- a command-line utility to perform fast-convolution filtering
- Then see kfc.h kiss_fftr.h kiss_fftnd.h fftutil.c kiss_fastfir.c
+ Then see kfc.h kiss_fftr_f32.h kiss_fft_f32nd.h fftutil.c kiss_fastfir.c
in the tools/ directory.
*/
#define KISS_FFT_F32_MALLOC g_malloc
+#define KISS_FFT_F32_FREE g_free
#define kiss_fft_f32_scalar float
typedef struct {
kiss_fft_f32_cfg kiss_fft_f32_alloc(int nfft,int inverse_fft,void * mem,size_t * lenmem);
/*
- * kiss_fft(cfg,in_out_buf)
+ * kiss_fft_f32(cfg,in_out_buf)
*
* Perform an FFT on a complex input buffer.
* for a forward FFT,
/* If kiss_fft_f32_alloc allocated a buffer, it is one contiguous
buffer and can be simply free()d when no longer needed*/
-#define kiss_fft_f32_free g_free
+#define kiss_fft_f32_free KISS_FFT_F32_FREE
/*
Cleans up some memory that gets managed internally. Not necessary to call, but it might clean up
int kiss_fft_f32_next_fast_size(int n);
/* for real ffts, we need an even size */
-#define kiss_fftr_next_fast_size_real(n) \
- (kiss_fft_next_fast_size( ((n)+1)>>1)<<1)
+#define kiss_fftr_f32_next_fast_size_real(n) \
+ (kiss_fft_f32_next_fast_size( ((n)+1)>>1)<<1)
#ifdef __cplusplus
}
/*
-Copyright (c) 2003-2004, Mark Borgerding
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
- * Neither the author nor the names of any contributors may be used to endorse or promote products derived from this software without specific prior written permission.
+ * Copyright (c) 2003-2010, Mark Borgerding. All rights reserved.
+ * This file is part of KISS FFT - https://github.com/mborgerding/kissfft
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * See COPYING file for more information.
+ */
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
#include "_kiss_fft_guts_f64.h"
/* The guts header contains all the multiplication and addition macros that are defined for
- fixed or floating point complex numbers. It also declares the kf_ internal functions.
+ fixed or floating point complex numbers. It also delares the kf_ internal functions.
*/
-static kiss_fft_f64_cpx *scratchbuf = NULL;
-static size_t nscratchbuf = 0;
-static kiss_fft_f64_cpx *tmpbuf = NULL;
-static size_t ntmpbuf = 0;
-
-#define CHECKBUF(buf,nbuf,n) \
- do { \
- if ( nbuf < (size_t)(n) ) {\
- free(buf); \
- buf = (kiss_fft_f64_cpx*)KISS_FFT_F64_MALLOC(sizeof(kiss_fft_f64_cpx)*(n)); \
- nbuf = (size_t)(n); \
- } \
- }while(0)
-
-
static void
kf_bfly2 (kiss_fft_f64_cpx * Fout,
const size_t fstride, const kiss_fft_f64_cfg st, int m)
kiss_fft_f64_cpx *Fout2;
kiss_fft_f64_cpx *tw1 = st->twiddles;
kiss_fft_f64_cpx t;
-
Fout2 = Fout + m;
do {
C_FIXDIV (*Fout, 2);
const size_t m2 = 2 * m;
const size_t m3 = 3 * m;
+
tw3 = tw2 = tw1 = st->twiddles;
do {
kiss_fft_f64_cpx *tw1, *tw2;
kiss_fft_f64_cpx scratch[5];
kiss_fft_f64_cpx epi3;
-
epi3 = st->twiddles[fstride * m];
tw1 = tw2 = st->twiddles;
kiss_fft_f64_cpx *twiddles = st->twiddles;
kiss_fft_f64_cpx *tw;
kiss_fft_f64_cpx ya, yb;
-
ya = twiddles[fstride * m];
yb = twiddles[fstride * 2 * m];
kiss_fft_f64_cpx t;
int Norig = st->nfft;
- CHECKBUF (scratchbuf, nscratchbuf, p);
+ kiss_fft_f64_cpx *scratch =
+ (kiss_fft_f64_cpx *) KISS_FFT_F64_TMP_ALLOC (sizeof (kiss_fft_f64_cpx) *
+ p);
for (u = 0; u < m; ++u) {
k = u;
for (q1 = 0; q1 < p; ++q1) {
- scratchbuf[q1] = Fout[k];
- C_FIXDIV (scratchbuf[q1], p);
+ scratch[q1] = Fout[k];
+ C_FIXDIV (scratch[q1], p);
k += m;
}
k = u;
for (q1 = 0; q1 < p; ++q1) {
int twidx = 0;
-
- Fout[k] = scratchbuf[0];
+ Fout[k] = scratch[0];
for (q = 1; q < p; ++q) {
twidx += fstride * k;
if (twidx >= Norig)
twidx -= Norig;
- C_MUL (t, scratchbuf[q], twiddles[twidx]);
+ C_MUL (t, scratch[q], twiddles[twidx]);
C_ADDTO (Fout[k], t);
}
k += m;
}
}
+ KISS_FFT_F64_TMP_FREE (scratch);
}
static void
kf_work (kiss_fft_f64_cpx * Fout,
const kiss_fft_f64_cpx * f,
- const size_t fstride,
- int in_stride, int *factors, const kiss_fft_f64_cfg st)
+ const size_t fstride, int in_stride, int *factors,
+ const kiss_fft_f64_cfg st)
{
kiss_fft_f64_cpx *Fout_beg = Fout;
const int p = *factors++; /* the radix */
#ifdef _OPENMP
// use openmp extensions at the
// top-level (not recursive)
- if (fstride == 1) {
+ if (fstride == 1 && p <= 5 && m != 1) {
int k;
// execute the p different work units in different threads
{
int p = 4;
double floor_sqrt;
-
floor_sqrt = floor (sqrt ((double) n));
/*factor out powers of 4, powers of 2, then any remaining primes */
* User-callable function to allocate all necessary storage space for the fft.
*
* The return value is a contiguous block of memory, allocated with malloc. As such,
- * It can be freed with free(), rather than a kiss_fft-specific function.
+ * It can be freed with free(), rather than a kiss_fft_f64-specific function.
* */
kiss_fft_f64_cfg
kiss_fft_f64_alloc (int nfft, int inverse_fft, void *mem, size_t * lenmem)
{
kiss_fft_f64_cfg st = NULL;
- const double pi =
- 3.141592653589793238462643383279502884197169399375105820974944;
size_t memneeded = sizeof (struct kiss_fft_f64_state)
+ sizeof (kiss_fft_f64_cpx) * (nfft - 1); /* twiddle factors */
}
if (st) {
int i;
-
st->nfft = nfft;
st->inverse = inverse_fft;
for (i = 0; i < nfft; ++i) {
+ const double pi =
+ 3.141592653589793238462643383279502884197169399375105820974944;
double phase = -2 * pi * i / nfft;
-
if (st->inverse)
phase *= -1;
kf_cexp (st->twiddles + i, phase);
}
-
-
void
kiss_fft_f64_stride (kiss_fft_f64_cfg st, const kiss_fft_f64_cpx * fin,
kiss_fft_f64_cpx * fout, int in_stride)
{
if (fin == fout) {
- CHECKBUF (tmpbuf, ntmpbuf, st->nfft);
+ //NOTE: this is not really an in-place FFT algorithm.
+ //It just performs an out-of-place FFT into a temp buffer
+ kiss_fft_f64_cpx *tmpbuf =
+ (kiss_fft_f64_cpx *) KISS_FFT_F64_TMP_ALLOC (sizeof (kiss_fft_f64_cpx) *
+ st->nfft);
kf_work (tmpbuf, fin, 1, in_stride, st->factors, st);
memcpy (fout, tmpbuf, sizeof (kiss_fft_f64_cpx) * st->nfft);
+ KISS_FFT_F64_TMP_FREE (tmpbuf);
} else {
kf_work (fout, fin, 1, in_stride, st->factors, st);
}
}
-/* not really necessary to call, but if someone is doing in-place ffts, they may want to free the
- buffers from CHECKBUF
- */
void
kiss_fft_f64_cleanup (void)
{
- free (scratchbuf);
- scratchbuf = NULL;
- nscratchbuf = 0;
- free (tmpbuf);
- tmpbuf = NULL;
- ntmpbuf = 0;
+ // nothing needed any more
}
int
{
while (1) {
int m = n;
-
while ((m % 2) == 0)
m /= 2;
while ((m % 3) == 0)
+/*
+ * Copyright (c) 2003-2010, Mark Borgerding. All rights reserved.
+ * This file is part of KISS FFT - https://github.com/mborgerding/kissfft
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * See COPYING file for more information.
+ */
+
#ifndef KISS_FFT_F64_H
#define KISS_FFT_F64_H
#include <stdio.h>
#include <math.h>
#include <string.h>
+#include <stdint.h>
#include <glib.h>
#ifdef __cplusplus
-- a command-line utility to perform ffts
-- a command-line utility to perform fast-convolution filtering
- Then see kfc.h kiss_fftr.h kiss_fftnd.h fftutil.c kiss_fastfir.c
+ Then see kfc.h kiss_fftr_f64.h kiss_fft_f64nd.h fftutil.c kiss_fastfir.c
in the tools/ directory.
*/
#define KISS_FFT_F64_MALLOC g_malloc
+#define KISS_FFT_F64_FREE g_free
#define kiss_fft_f64_scalar double
typedef struct {
kiss_fft_f64_cfg kiss_fft_f64_alloc(int nfft,int inverse_fft,void * mem,size_t * lenmem);
/*
- * kiss_fft(cfg,in_out_buf)
+ * kiss_fft_f64(cfg,in_out_buf)
*
* Perform an FFT on a complex input buffer.
* for a forward FFT,
/* If kiss_fft_f64_alloc allocated a buffer, it is one contiguous
buffer and can be simply free()d when no longer needed*/
-#define kiss_fft_f64_free g_free
+#define kiss_fft_f64_free KISS_FFT_F64_FREE
/*
Cleans up some memory that gets managed internally. Not necessary to call, but it might clean up
int kiss_fft_f64_next_fast_size(int n);
/* for real ffts, we need an even size */
-#define kiss_fftr_next_fast_size_real(n) \
- (kiss_fft_next_fast_size( ((n)+1)>>1)<<1)
+#define kiss_fftr_f64_next_fast_size_real(n) \
+ (kiss_fft_f64_next_fast_size( ((n)+1)>>1)<<1)
#ifdef __cplusplus
}
/*
-Copyright (c) 2003-2004, Mark Borgerding
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
- * Neither the author nor the names of any contributors may be used to endorse or promote products derived from this software without specific prior written permission.
+ * Copyright (c) 2003-2010, Mark Borgerding. All rights reserved.
+ * This file is part of KISS FFT - https://github.com/mborgerding/kissfft
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * See COPYING file for more information.
+ */
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
#include "_kiss_fft_guts_s16.h"
/* The guts header contains all the multiplication and addition macros that are defined for
- fixed or floating point complex numbers. It also declares the kf_ internal functions.
+ fixed or floating point complex numbers. It also delares the kf_ internal functions.
*/
-static kiss_fft_s16_cpx *scratchbuf = NULL;
-static size_t nscratchbuf = 0;
-static kiss_fft_s16_cpx *tmpbuf = NULL;
-static size_t ntmpbuf = 0;
-
-#define CHECKBUF(buf,nbuf,n) \
- do { \
- if ( nbuf < (size_t)(n) ) {\
- free(buf); \
- buf = (kiss_fft_s16_cpx*)KISS_FFT_S16_MALLOC(sizeof(kiss_fft_s16_cpx)*(n)); \
- nbuf = (size_t)(n); \
- } \
- }while(0)
-
-
static void
kf_bfly2 (kiss_fft_s16_cpx * Fout,
const size_t fstride, const kiss_fft_s16_cfg st, int m)
kiss_fft_s16_cpx *Fout2;
kiss_fft_s16_cpx *tw1 = st->twiddles;
kiss_fft_s16_cpx t;
-
Fout2 = Fout + m;
do {
C_FIXDIV (*Fout, 2);
const size_t m2 = 2 * m;
const size_t m3 = 3 * m;
+
tw3 = tw2 = tw1 = st->twiddles;
do {
kiss_fft_s16_cpx *tw1, *tw2;
kiss_fft_s16_cpx scratch[5];
kiss_fft_s16_cpx epi3;
-
epi3 = st->twiddles[fstride * m];
tw1 = tw2 = st->twiddles;
kiss_fft_s16_cpx *twiddles = st->twiddles;
kiss_fft_s16_cpx *tw;
kiss_fft_s16_cpx ya, yb;
-
ya = twiddles[fstride * m];
yb = twiddles[fstride * 2 * m];
kiss_fft_s16_cpx t;
int Norig = st->nfft;
- CHECKBUF (scratchbuf, nscratchbuf, p);
+ kiss_fft_s16_cpx *scratch =
+ (kiss_fft_s16_cpx *) KISS_FFT_S16_TMP_ALLOC (sizeof (kiss_fft_s16_cpx) *
+ p);
for (u = 0; u < m; ++u) {
k = u;
for (q1 = 0; q1 < p; ++q1) {
- scratchbuf[q1] = Fout[k];
- C_FIXDIV (scratchbuf[q1], p);
+ scratch[q1] = Fout[k];
+ C_FIXDIV (scratch[q1], p);
k += m;
}
k = u;
for (q1 = 0; q1 < p; ++q1) {
int twidx = 0;
-
- Fout[k] = scratchbuf[0];
+ Fout[k] = scratch[0];
for (q = 1; q < p; ++q) {
twidx += fstride * k;
if (twidx >= Norig)
twidx -= Norig;
- C_MUL (t, scratchbuf[q], twiddles[twidx]);
+ C_MUL (t, scratch[q], twiddles[twidx]);
C_ADDTO (Fout[k], t);
}
k += m;
}
}
+ KISS_FFT_S16_TMP_FREE (scratch);
}
static void
kf_work (kiss_fft_s16_cpx * Fout,
const kiss_fft_s16_cpx * f,
- const size_t fstride,
- int in_stride, int *factors, const kiss_fft_s16_cfg st)
+ const size_t fstride, int in_stride, int *factors,
+ const kiss_fft_s16_cfg st)
{
kiss_fft_s16_cpx *Fout_beg = Fout;
const int p = *factors++; /* the radix */
#ifdef _OPENMP
// use openmp extensions at the
// top-level (not recursive)
- if (fstride == 1) {
+ if (fstride == 1 && p <= 5 && m != 1) {
int k;
// execute the p different work units in different threads
{
int p = 4;
double floor_sqrt;
-
floor_sqrt = floor (sqrt ((double) n));
/*factor out powers of 4, powers of 2, then any remaining primes */
* User-callable function to allocate all necessary storage space for the fft.
*
* The return value is a contiguous block of memory, allocated with malloc. As such,
- * It can be freed with free(), rather than a kiss_fft-specific function.
+ * It can be freed with free(), rather than a kiss_fft_s16-specific function.
* */
kiss_fft_s16_cfg
kiss_fft_s16_alloc (int nfft, int inverse_fft, void *mem, size_t * lenmem)
}
if (st) {
int i;
-
st->nfft = nfft;
st->inverse = inverse_fft;
const double pi =
3.141592653589793238462643383279502884197169399375105820974944;
double phase = -2 * pi * i / nfft;
-
if (st->inverse)
phase *= -1;
kf_cexp (st->twiddles + i, phase);
}
-
-
void
kiss_fft_s16_stride (kiss_fft_s16_cfg st, const kiss_fft_s16_cpx * fin,
kiss_fft_s16_cpx * fout, int in_stride)
{
if (fin == fout) {
- CHECKBUF (tmpbuf, ntmpbuf, st->nfft);
+ //NOTE: this is not really an in-place FFT algorithm.
+ //It just performs an out-of-place FFT into a temp buffer
+ kiss_fft_s16_cpx *tmpbuf =
+ (kiss_fft_s16_cpx *) KISS_FFT_S16_TMP_ALLOC (sizeof (kiss_fft_s16_cpx) *
+ st->nfft);
kf_work (tmpbuf, fin, 1, in_stride, st->factors, st);
memcpy (fout, tmpbuf, sizeof (kiss_fft_s16_cpx) * st->nfft);
+ KISS_FFT_S16_TMP_FREE (tmpbuf);
} else {
kf_work (fout, fin, 1, in_stride, st->factors, st);
}
}
-/* not really necessary to call, but if someone is doing in-place ffts, they may want to free the
- buffers from CHECKBUF
- */
void
kiss_fft_s16_cleanup (void)
{
- free (scratchbuf);
- scratchbuf = NULL;
- nscratchbuf = 0;
- free (tmpbuf);
- tmpbuf = NULL;
- ntmpbuf = 0;
+ // nothing needed any more
}
int
{
while (1) {
int m = n;
-
while ((m % 2) == 0)
m /= 2;
while ((m % 3) == 0)
+/*
+ * Copyright (c) 2003-2010, Mark Borgerding. All rights reserved.
+ * This file is part of KISS FFT - https://github.com/mborgerding/kissfft
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * See COPYING file for more information.
+ */
+
#ifndef KISS_FFT_S16_H
#define KISS_FFT_S16_H
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#ifdef HAVE_STDINT_H
-#include <stdint.h>
-#endif
-
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <string.h>
+#include <stdint.h>
#include <glib.h>
#ifdef __cplusplus
-- a command-line utility to perform ffts
-- a command-line utility to perform fast-convolution filtering
- Then see kfc.h kiss_fftr.h kiss_fftnd.h fftutil.c kiss_fastfir.c
+ Then see kfc.h kiss_fftr_s16.h kiss_fft_s16nd.h fftutil.c kiss_fastfir.c
in the tools/ directory.
*/
#define KISS_FFT_S16_MALLOC g_malloc
-
+#define KISS_FFT_S16_FREE g_free
#define kiss_fft_s16_scalar int16_t
+#define FIXED_POINT 16
typedef struct {
kiss_fft_s16_scalar r;
kiss_fft_s16_cfg kiss_fft_s16_alloc(int nfft,int inverse_fft,void * mem,size_t * lenmem);
/*
- * kiss_fft(cfg,in_out_buf)
+ * kiss_fft_s16(cfg,in_out_buf)
*
* Perform an FFT on a complex input buffer.
* for a forward FFT,
/* If kiss_fft_s16_alloc allocated a buffer, it is one contiguous
buffer and can be simply free()d when no longer needed*/
-#define kiss_fft_s16_free g_free
+#define kiss_fft_s16_free KISS_FFT_S16_FREE
/*
Cleans up some memory that gets managed internally. Not necessary to call, but it might clean up
int kiss_fft_s16_next_fast_size(int n);
/* for real ffts, we need an even size */
-#define kiss_fftr_next_fast_size_real(n) \
- (kiss_fft_next_fast_size( ((n)+1)>>1)<<1)
+#define kiss_fftr_s16_next_fast_size_real(n) \
+ (kiss_fft_s16_next_fast_size( ((n)+1)>>1)<<1)
#ifdef __cplusplus
}
/*
-Copyright (c) 2003-2004, Mark Borgerding
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
- * Neither the author nor the names of any contributors may be used to endorse or promote products derived from this software without specific prior written permission.
+ * Copyright (c) 2003-2010, Mark Borgerding. All rights reserved.
+ * This file is part of KISS FFT - https://github.com/mborgerding/kissfft
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * See COPYING file for more information.
+ */
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
#include "_kiss_fft_guts_s32.h"
/* The guts header contains all the multiplication and addition macros that are defined for
- fixed or floating point complex numbers. It also declares the kf_ internal functions.
+ fixed or floating point complex numbers. It also delares the kf_ internal functions.
*/
-static kiss_fft_s32_cpx *scratchbuf = NULL;
-static size_t nscratchbuf = 0;
-static kiss_fft_s32_cpx *tmpbuf = NULL;
-static size_t ntmpbuf = 0;
-
-#define CHECKBUF(buf,nbuf,n) \
- do { \
- if ( nbuf < (size_t)(n) ) {\
- free(buf); \
- buf = (kiss_fft_s32_cpx*)KISS_FFT_S32_MALLOC(sizeof(kiss_fft_s32_cpx)*(n)); \
- nbuf = (size_t)(n); \
- } \
- }while(0)
-
-
static void
kf_bfly2 (kiss_fft_s32_cpx * Fout,
const size_t fstride, const kiss_fft_s32_cfg st, int m)
kiss_fft_s32_cpx *Fout2;
kiss_fft_s32_cpx *tw1 = st->twiddles;
kiss_fft_s32_cpx t;
-
Fout2 = Fout + m;
do {
C_FIXDIV (*Fout, 2);
const size_t m2 = 2 * m;
const size_t m3 = 3 * m;
+
tw3 = tw2 = tw1 = st->twiddles;
do {
kiss_fft_s32_cpx *tw1, *tw2;
kiss_fft_s32_cpx scratch[5];
kiss_fft_s32_cpx epi3;
-
epi3 = st->twiddles[fstride * m];
tw1 = tw2 = st->twiddles;
kiss_fft_s32_cpx *twiddles = st->twiddles;
kiss_fft_s32_cpx *tw;
kiss_fft_s32_cpx ya, yb;
-
ya = twiddles[fstride * m];
yb = twiddles[fstride * 2 * m];
kiss_fft_s32_cpx t;
int Norig = st->nfft;
- CHECKBUF (scratchbuf, nscratchbuf, p);
+ kiss_fft_s32_cpx *scratch =
+ (kiss_fft_s32_cpx *) KISS_FFT_S32_TMP_ALLOC (sizeof (kiss_fft_s32_cpx) *
+ p);
for (u = 0; u < m; ++u) {
k = u;
for (q1 = 0; q1 < p; ++q1) {
- scratchbuf[q1] = Fout[k];
- C_FIXDIV (scratchbuf[q1], p);
+ scratch[q1] = Fout[k];
+ C_FIXDIV (scratch[q1], p);
k += m;
}
k = u;
for (q1 = 0; q1 < p; ++q1) {
int twidx = 0;
-
- Fout[k] = scratchbuf[0];
+ Fout[k] = scratch[0];
for (q = 1; q < p; ++q) {
twidx += fstride * k;
if (twidx >= Norig)
twidx -= Norig;
- C_MUL (t, scratchbuf[q], twiddles[twidx]);
+ C_MUL (t, scratch[q], twiddles[twidx]);
C_ADDTO (Fout[k], t);
}
k += m;
}
}
+ KISS_FFT_S32_TMP_FREE (scratch);
}
static void
kf_work (kiss_fft_s32_cpx * Fout,
const kiss_fft_s32_cpx * f,
- const size_t fstride,
- int in_stride, int *factors, const kiss_fft_s32_cfg st)
+ const size_t fstride, int in_stride, int *factors,
+ const kiss_fft_s32_cfg st)
{
kiss_fft_s32_cpx *Fout_beg = Fout;
const int p = *factors++; /* the radix */
#ifdef _OPENMP
// use openmp extensions at the
// top-level (not recursive)
- if (fstride == 1) {
+ if (fstride == 1 && p <= 5 && m != 1) {
int k;
// execute the p different work units in different threads
{
int p = 4;
double floor_sqrt;
-
floor_sqrt = floor (sqrt ((double) n));
/*factor out powers of 4, powers of 2, then any remaining primes */
* User-callable function to allocate all necessary storage space for the fft.
*
* The return value is a contiguous block of memory, allocated with malloc. As such,
- * It can be freed with free(), rather than a kiss_fft-specific function.
+ * It can be freed with free(), rather than a kiss_fft_s32-specific function.
* */
kiss_fft_s32_cfg
kiss_fft_s32_alloc (int nfft, int inverse_fft, void *mem, size_t * lenmem)
}
if (st) {
int i;
-
st->nfft = nfft;
st->inverse = inverse_fft;
const double pi =
3.141592653589793238462643383279502884197169399375105820974944;
double phase = -2 * pi * i / nfft;
-
if (st->inverse)
phase *= -1;
kf_cexp (st->twiddles + i, phase);
}
-
-
void
kiss_fft_s32_stride (kiss_fft_s32_cfg st, const kiss_fft_s32_cpx * fin,
kiss_fft_s32_cpx * fout, int in_stride)
{
if (fin == fout) {
- CHECKBUF (tmpbuf, ntmpbuf, st->nfft);
+ //NOTE: this is not really an in-place FFT algorithm.
+ //It just performs an out-of-place FFT into a temp buffer
+ kiss_fft_s32_cpx *tmpbuf =
+ (kiss_fft_s32_cpx *) KISS_FFT_S32_TMP_ALLOC (sizeof (kiss_fft_s32_cpx) *
+ st->nfft);
kf_work (tmpbuf, fin, 1, in_stride, st->factors, st);
memcpy (fout, tmpbuf, sizeof (kiss_fft_s32_cpx) * st->nfft);
+ KISS_FFT_S32_TMP_FREE (tmpbuf);
} else {
kf_work (fout, fin, 1, in_stride, st->factors, st);
}
}
-/* not really necessary to call, but if someone is doing in-place ffts, they may want to free the
- buffers from CHECKBUF
- */
void
kiss_fft_s32_cleanup (void)
{
- free (scratchbuf);
- scratchbuf = NULL;
- nscratchbuf = 0;
- free (tmpbuf);
- tmpbuf = NULL;
- ntmpbuf = 0;
+ // nothing needed any more
}
int
{
while (1) {
int m = n;
-
while ((m % 2) == 0)
m /= 2;
while ((m % 3) == 0)
+/*
+ * Copyright (c) 2003-2010, Mark Borgerding. All rights reserved.
+ * This file is part of KISS FFT - https://github.com/mborgerding/kissfft
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * See COPYING file for more information.
+ */
+
#ifndef KISS_FFT_S32_H
#define KISS_FFT_S32_H
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#ifdef HAVE_STDINT_H
-#include <stdint.h>
-#endif
-
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <string.h>
+#include <stdint.h>
#include <glib.h>
#ifdef __cplusplus
-- a command-line utility to perform ffts
-- a command-line utility to perform fast-convolution filtering
- Then see kfc.h kiss_fftr.h kiss_fftnd.h fftutil.c kiss_fastfir.c
+ Then see kfc.h kiss_fftr_s32.h kiss_fft_s32nd.h fftutil.c kiss_fastfir.c
in the tools/ directory.
*/
#define KISS_FFT_S32_MALLOC g_malloc
-
+#define KISS_FFT_S32_FREE g_free
#define kiss_fft_s32_scalar int32_t
+#define FIXED_POINT 32
typedef struct {
kiss_fft_s32_scalar r;
kiss_fft_s32_cfg kiss_fft_s32_alloc(int nfft,int inverse_fft,void * mem,size_t * lenmem);
/*
- * kiss_fft(cfg,in_out_buf)
+ * kiss_fft_s32(cfg,in_out_buf)
*
* Perform an FFT on a complex input buffer.
* for a forward FFT,
/* If kiss_fft_s32_alloc allocated a buffer, it is one contiguous
buffer and can be simply free()d when no longer needed*/
-#define kiss_fft_s32_free g_free
+#define kiss_fft_s32_free KISS_FFT_S32_FREE
/*
Cleans up some memory that gets managed internally. Not necessary to call, but it might clean up
int kiss_fft_s32_next_fast_size(int n);
/* for real ffts, we need an even size */
-#define kiss_fftr_next_fast_size_real(n) \
- (kiss_fft_next_fast_size( ((n)+1)>>1)<<1)
+#define kiss_fftr_s32_next_fast_size_real(n) \
+ (kiss_fft_s32_next_fast_size( ((n)+1)>>1)<<1)
#ifdef __cplusplus
}
/*
-Copyright (c) 2003-2004, Mark Borgerding
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
- * Neither the author nor the names of any contributors may be used to endorse or promote products derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+ * Copyright (c) 2003-2004, Mark Borgerding. All rights reserved.
+ * This file is part of KISS FFT - https://github.com/mborgerding/kissfft
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * See COPYING file for more information.
+ */
#include "kiss_fftr_f32.h"
#include "_kiss_fft_guts_f32.h"
kiss_fft_f32_cpx *tmpbuf;
kiss_fft_f32_cpx *super_twiddles;
#ifdef USE_SIMD
- long pad;
+ void *pad;
#endif
};
{
int i;
kiss_fftr_f32_cfg st = NULL;
- size_t subsize, memneeded;
+ size_t subsize = 0, memneeded;
- if (nfft & 1) {
- fprintf (stderr, "Real FFT optimization must be even.\n");
- return NULL;
- }
+ g_return_val_if_fail ((nfft & 1) == 0, NULL);
nfft >>= 1;
kiss_fft_f32_alloc (nfft, inverse_fft, NULL, &subsize);
- memneeded = ALIGN_STRUCT (sizeof (struct kiss_fftr_f32_state))
- + ALIGN_STRUCT (subsize) + sizeof (kiss_fft_f32_cpx) * (nfft * 3 / 2);
+ memneeded =
+ ALIGN_STRUCT (sizeof (struct kiss_fftr_f32_state)) +
+ ALIGN_STRUCT (subsize) + sizeof (kiss_fft_f32_cpx) * (nfft * 3 / 2);
if (lenmem == NULL) {
st = (kiss_fftr_f32_cfg) KISS_FFT_F32_MALLOC (memneeded);
for (i = 0; i < nfft / 2; ++i) {
double phase =
-3.14159265358979323846264338327 * ((double) (i + 1) / nfft + .5);
-
if (inverse_fft)
phase *= -1;
kf_cexp (st->super_twiddles + i, phase);
int k, ncfft;
kiss_fft_f32_cpx fpnk, fpk, f1k, f2k, tw, tdc;
- /* kiss fft usage error: improper alloc */
- g_return_if_fail (st->substate->inverse == 0);
+ g_return_if_fail (!st->substate->inverse);
ncfft = st->substate->nfft;
/* input buffer timedata is stored row-wise */
int k, ncfft;
- /* kiss fft usage error: improper alloc */
- g_return_if_fail (st->substate->inverse != 0);
+ g_return_if_fail (st->substate->inverse);
ncfft = st->substate->nfft;
for (k = 1; k <= ncfft / 2; ++k) {
kiss_fft_f32_cpx fk, fnkc, fek, fok, tmp;
-
fk = freqdata[k];
fnkc.r = freqdata[ncfft - k].r;
fnkc.i = -freqdata[ncfft - k].i;
-#ifndef KISS_FTR_F32_H
-#define KISS_FTR_F32_H
+/*
+ * Copyright (c) 2003-2004, Mark Borgerding. All rights reserved.
+ * This file is part of KISS FFT - https://github.com/mborgerding/kissfft
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * See COPYING file for more information.
+ */
+
+#ifndef KISS_FTR_H
+#define KISS_FTR_H
#include "kiss_fft_f32.h"
#ifdef __cplusplus
output timedata has nfft scalar points
*/
-#define kiss_fftr_f32_free free
+#define kiss_fftr_f32_free KISS_FFT_F32_FREE
#ifdef __cplusplus
}
/*
-Copyright (c) 2003-2004, Mark Borgerding
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
- * Neither the author nor the names of any contributors may be used to endorse or promote products derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+ * Copyright (c) 2003-2004, Mark Borgerding. All rights reserved.
+ * This file is part of KISS FFT - https://github.com/mborgerding/kissfft
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * See COPYING file for more information.
+ */
#include "kiss_fftr_f64.h"
#include "_kiss_fft_guts_f64.h"
kiss_fft_f64_cpx *tmpbuf;
kiss_fft_f64_cpx *super_twiddles;
#ifdef USE_SIMD
- long pad;
+ void *pad;
#endif
};
{
int i;
kiss_fftr_f64_cfg st = NULL;
- size_t subsize, memneeded;
+ size_t subsize = 0, memneeded;
- if (nfft & 1) {
- fprintf (stderr, "Real FFT optimization must be even.\n");
- return NULL;
- }
+ g_return_val_if_fail ((nfft & 1) == 0, NULL);
nfft >>= 1;
kiss_fft_f64_alloc (nfft, inverse_fft, NULL, &subsize);
- memneeded = ALIGN_STRUCT (sizeof (struct kiss_fftr_f64_state))
- + ALIGN_STRUCT (subsize)
- + sizeof (kiss_fft_f64_cpx) * (nfft * 3 / 2);
+ memneeded =
+ ALIGN_STRUCT (sizeof (struct kiss_fftr_f64_state)) +
+ ALIGN_STRUCT (subsize) + sizeof (kiss_fft_f64_cpx) * (nfft * 3 / 2);
if (lenmem == NULL) {
st = (kiss_fftr_f64_cfg) KISS_FFT_F64_MALLOC (memneeded);
for (i = 0; i < nfft / 2; ++i) {
double phase =
-3.14159265358979323846264338327 * ((double) (i + 1) / nfft + .5);
-
if (inverse_fft)
phase *= -1;
kf_cexp (st->super_twiddles + i, phase);
int k, ncfft;
kiss_fft_f64_cpx fpnk, fpk, f1k, f2k, tw, tdc;
- /* kiss fft usage error: improper alloc */
- g_return_if_fail (st->substate->inverse == 0);
+ g_return_if_fail (!st->substate->inverse);
ncfft = st->substate->nfft;
/* input buffer timedata is stored row-wise */
int k, ncfft;
- /* kiss fft usage error: improper alloc */
- g_return_if_fail (st->substate->inverse != 0);
+ g_return_if_fail (st->substate->inverse);
ncfft = st->substate->nfft;
for (k = 1; k <= ncfft / 2; ++k) {
kiss_fft_f64_cpx fk, fnkc, fek, fok, tmp;
-
fk = freqdata[k];
fnkc.r = freqdata[ncfft - k].r;
fnkc.i = -freqdata[ncfft - k].i;
-#ifndef KISS_FTR_F64_H
-#define KISS_FTR_F64_H
+/*
+ * Copyright (c) 2003-2004, Mark Borgerding. All rights reserved.
+ * This file is part of KISS FFT - https://github.com/mborgerding/kissfft
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * See COPYING file for more information.
+ */
+
+#ifndef KISS_FTR_H
+#define KISS_FTR_H
#include "kiss_fft_f64.h"
#ifdef __cplusplus
output timedata has nfft scalar points
*/
-#define kiss_fftr_f64_free free
+#define kiss_fftr_f64_free KISS_FFT_F64_FREE
#ifdef __cplusplus
}
/*
-Copyright (c) 2003-2004, Mark Borgerding
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
- * Neither the author nor the names of any contributors may be used to endorse or promote products derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+ * Copyright (c) 2003-2004, Mark Borgerding. All rights reserved.
+ * This file is part of KISS FFT - https://github.com/mborgerding/kissfft
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * See COPYING file for more information.
+ */
#include "kiss_fftr_s16.h"
#include "_kiss_fft_guts_s16.h"
kiss_fft_s16_cpx *tmpbuf;
kiss_fft_s16_cpx *super_twiddles;
#ifdef USE_SIMD
- long pad;
+ void *pad;
#endif
};
{
int i;
kiss_fftr_s16_cfg st = NULL;
- size_t subsize, memneeded;
+ size_t subsize = 0, memneeded;
- if (nfft & 1) {
- fprintf (stderr, "Real FFT optimization must be even.\n");
- return NULL;
- }
+ g_return_val_if_fail ((nfft & 1) == 0, NULL);
nfft >>= 1;
kiss_fft_s16_alloc (nfft, inverse_fft, NULL, &subsize);
- memneeded = ALIGN_STRUCT (sizeof (struct kiss_fftr_s16_state))
- + ALIGN_STRUCT (subsize)
- + sizeof (kiss_fft_s16_cpx) * (nfft * 3 / 2);
+ memneeded =
+ ALIGN_STRUCT (sizeof (struct kiss_fftr_s16_state)) +
+ ALIGN_STRUCT (subsize) + sizeof (kiss_fft_s16_cpx) * (nfft * 3 / 2);
if (lenmem == NULL) {
st = (kiss_fftr_s16_cfg) KISS_FFT_S16_MALLOC (memneeded);
for (i = 0; i < nfft / 2; ++i) {
double phase =
-3.14159265358979323846264338327 * ((double) (i + 1) / nfft + .5);
-
if (inverse_fft)
phase *= -1;
kf_cexp (st->super_twiddles + i, phase);
int k, ncfft;
kiss_fft_s16_cpx fpnk, fpk, f1k, f2k, tw, tdc;
- /* kiss fft usage error: improper alloc */
- g_return_if_fail (st->substate->inverse == 0);
+ g_return_if_fail (!st->substate->inverse);
ncfft = st->substate->nfft;
/* input buffer timedata is stored row-wise */
int k, ncfft;
- /* kiss fft usage error: improper alloc */
- g_return_if_fail (st->substate->inverse != 0);
+ g_return_if_fail (st->substate->inverse);
ncfft = st->substate->nfft;
for (k = 1; k <= ncfft / 2; ++k) {
kiss_fft_s16_cpx fk, fnkc, fek, fok, tmp;
-
fk = freqdata[k];
fnkc.r = freqdata[ncfft - k].r;
fnkc.i = -freqdata[ncfft - k].i;
-#ifndef KISS_FTR_S16_H
-#define KISS_FTR_S16_H
+/*
+ * Copyright (c) 2003-2004, Mark Borgerding. All rights reserved.
+ * This file is part of KISS FFT - https://github.com/mborgerding/kissfft
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * See COPYING file for more information.
+ */
+
+#ifndef KISS_FTR_H
+#define KISS_FTR_H
#include "kiss_fft_s16.h"
#ifdef __cplusplus
output timedata has nfft scalar points
*/
-#define kiss_fftr_s16_free free
+#define kiss_fftr_s16_free KISS_FFT_S16_FREE
#ifdef __cplusplus
}
/*
-Copyright (c) 2003-2004, Mark Borgerding
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
- * Neither the author nor the names of any contributors may be used to endorse or promote products derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+ * Copyright (c) 2003-2004, Mark Borgerding. All rights reserved.
+ * This file is part of KISS FFT - https://github.com/mborgerding/kissfft
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * See COPYING file for more information.
+ */
#include "kiss_fftr_s32.h"
#include "_kiss_fft_guts_s32.h"
kiss_fft_s32_cpx *tmpbuf;
kiss_fft_s32_cpx *super_twiddles;
#ifdef USE_SIMD
- long pad;
+ void *pad;
#endif
};
{
int i;
kiss_fftr_s32_cfg st = NULL;
- size_t subsize, memneeded;
+ size_t subsize = 0, memneeded;
- if (nfft & 1) {
- fprintf (stderr, "Real FFT optimization must be even.\n");
- return NULL;
- }
+ g_return_val_if_fail ((nfft & 1) == 0, NULL);
nfft >>= 1;
kiss_fft_s32_alloc (nfft, inverse_fft, NULL, &subsize);
- memneeded = ALIGN_STRUCT (sizeof (struct kiss_fftr_s32_state))
- + ALIGN_STRUCT (subsize)
- + sizeof (kiss_fft_s32_cpx) * (nfft * 3 / 2);
+ memneeded =
+ ALIGN_STRUCT (sizeof (struct kiss_fftr_s32_state)) +
+ ALIGN_STRUCT (subsize) + sizeof (kiss_fft_s32_cpx) * (nfft * 3 / 2);
if (lenmem == NULL) {
st = (kiss_fftr_s32_cfg) KISS_FFT_S32_MALLOC (memneeded);
for (i = 0; i < nfft / 2; ++i) {
double phase =
-3.14159265358979323846264338327 * ((double) (i + 1) / nfft + .5);
-
if (inverse_fft)
phase *= -1;
kf_cexp (st->super_twiddles + i, phase);
int k, ncfft;
kiss_fft_s32_cpx fpnk, fpk, f1k, f2k, tw, tdc;
- /* kiss fft usage error: improper alloc */
- g_return_if_fail (st->substate->inverse == 0);
+ g_return_if_fail (!st->substate->inverse);
ncfft = st->substate->nfft;
/* input buffer timedata is stored row-wise */
int k, ncfft;
- /* kiss fft usage error: improper alloc */
- g_return_if_fail (st->substate->inverse != 0);
+ g_return_if_fail (st->substate->inverse);
ncfft = st->substate->nfft;
for (k = 1; k <= ncfft / 2; ++k) {
kiss_fft_s32_cpx fk, fnkc, fek, fok, tmp;
-
fk = freqdata[k];
fnkc.r = freqdata[ncfft - k].r;
fnkc.i = -freqdata[ncfft - k].i;
-#ifndef KISS_FTR_S32_H
-#define KISS_FTR_S32_H
+/*
+ * Copyright (c) 2003-2004, Mark Borgerding. All rights reserved.
+ * This file is part of KISS FFT - https://github.com/mborgerding/kissfft
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * See COPYING file for more information.
+ */
+
+#ifndef KISS_FTR_H
+#define KISS_FTR_H
#include "kiss_fft_s32.h"
#ifdef __cplusplus
output timedata has nfft scalar points
*/
-#define kiss_fftr_s32_free free
+#define kiss_fftr_s32_free KISS_FFT_S32_FREE
#ifdef __cplusplus
}
-Based on Kiss FFT version 1.2.6. http://kissfft.sourceforge.net
+Based on Kiss FFT version 1efe72041e00868c3c71eaf569343ee132a4fbb9
+https://github.com/mborgerding/kissfft
Only changes are limitation to one data type for each version in
kiss_fft.h and _kiss_fft_guts.h.
projects / platform / upstream / gst-plugins-base.git / commitdiff