gstreamer/gst-libs/gst/fft/gstfftf32.h

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Add libgstfft, a FFT library based on Kiss FFT which is Original commit message from CVS: Reviewed by: Stefan Kost <ensonic@users.sf.net> * configure.ac: * gst-libs/gst/Makefile.am: * gst-libs/gst/fft/Makefile.am: * gst-libs/gst/fft/_kiss_fft_guts_f32.h: * gst-libs/gst/fft/_kiss_fft_guts_f64.h: * gst-libs/gst/fft/_kiss_fft_guts_s16.h: * gst-libs/gst/fft/_kiss_fft_guts_s32.h: * gst-libs/gst/fft/gstfft.c: (gst_fft_next_fast_length): * gst-libs/gst/fft/gstfft.h: * gst-libs/gst/fft/gstfftf32.c: (gst_fft_f32_new), (gst_fft_f32_fft), (gst_fft_f32_inverse_fft), (gst_fft_f32_free), (gst_fft_f32_window), (gst_fft_f32_magnitude), (gst_fft_f32_phase): * gst-libs/gst/fft/gstfftf32.h: * gst-libs/gst/fft/gstfftf64.c: (gst_fft_f64_new), (gst_fft_f64_fft), (gst_fft_f64_inverse_fft), (gst_fft_f64_free), (gst_fft_f64_window), (gst_fft_f64_magnitude), (gst_fft_f64_phase): * gst-libs/gst/fft/gstfftf64.h: * gst-libs/gst/fft/gstffts16.c: (gst_fft_s16_new), (gst_fft_s16_fft), (gst_fft_s16_inverse_fft), (gst_fft_s16_free), (gst_fft_s16_window), (gst_fft_s16_magnitude), (gst_fft_s16_phase): * gst-libs/gst/fft/gstffts16.h: * gst-libs/gst/fft/gstffts32.c: (gst_fft_s32_new), (gst_fft_s32_fft), (gst_fft_s32_inverse_fft), (gst_fft_s32_free), (gst_fft_s32_window), (gst_fft_s32_magnitude), (gst_fft_s32_phase): * gst-libs/gst/fft/gstffts32.h: * gst-libs/gst/fft/kiss_fft_f32.c: (kf_bfly2), (kf_bfly4), (kf_bfly3), (kf_bfly5), (kf_bfly_generic), (kf_work), (kf_factor), (kiss_fft_f32_alloc), (kiss_fft_f32_stride), (kiss_fft_f32), (kiss_fft_f32_cleanup), (kiss_fft_f32_next_fast_size): * gst-libs/gst/fft/kiss_fft_f32.h: * gst-libs/gst/fft/kiss_fft_f64.c: (kf_bfly2), (kf_bfly4), (kf_bfly3), (kf_bfly5), (kf_bfly_generic), (kf_work), (kf_factor), (kiss_fft_f64_alloc), (kiss_fft_f64_stride), (kiss_fft_f64), (kiss_fft_f64_cleanup), (kiss_fft_f64_next_fast_size): * gst-libs/gst/fft/kiss_fft_f64.h: * gst-libs/gst/fft/kiss_fft_s16.c: (kf_bfly2), (kf_bfly4), (kf_bfly3), (kf_bfly5), (kf_bfly_generic), (kf_work), (kf_factor), (kiss_fft_s16_alloc), (kiss_fft_s16_stride), (kiss_fft_s16), (kiss_fft_s16_cleanup), (kiss_fft_s16_next_fast_size): * gst-libs/gst/fft/kiss_fft_s16.h: * gst-libs/gst/fft/kiss_fft_s32.c: (kf_bfly2), (kf_bfly4), (kf_bfly3), (kf_bfly5), (kf_bfly_generic), (kf_work), (kf_factor), (kiss_fft_s32_alloc), (kiss_fft_s32_stride), (kiss_fft_s32), (kiss_fft_s32_cleanup), (kiss_fft_s32_next_fast_size): * gst-libs/gst/fft/kiss_fft_s32.h: * gst-libs/gst/fft/kiss_fftr_f32.c: (kiss_fftr_f32_alloc), (kiss_fftr_f32), (kiss_fftri_f32): * gst-libs/gst/fft/kiss_fftr_f32.h: * gst-libs/gst/fft/kiss_fftr_f64.c: (kiss_fftr_f64_alloc), (kiss_fftr_f64), (kiss_fftri_f64): * gst-libs/gst/fft/kiss_fftr_f64.h: * gst-libs/gst/fft/kiss_fftr_s16.c: (kiss_fftr_s16_alloc), (kiss_fftr_s16), (kiss_fftri_s16): * gst-libs/gst/fft/kiss_fftr_s16.h: * gst-libs/gst/fft/kiss_fftr_s32.c: (kiss_fftr_s32_alloc), (kiss_fftr_s32), (kiss_fftri_s32): * gst-libs/gst/fft/kiss_fftr_s32.h: * gst-libs/gst/fft/kiss_version: * pkgconfig/gstreamer-plugins-base-uninstalled.pc.in: * pkgconfig/gstreamer-plugins-base.pc.in: Add libgstfft, a FFT library based on Kiss FFT which is BSD licensed. Supported sample formats are int16, int32, float and double. For those formats a real FFT and IFFT can be done, different windowing functions can be applied and functions for extracting the magnitude and phase exist. Fixes #468619. * docs/libs/Makefile.am: * docs/libs/gst-plugins-base-libs-docs.sgml: * docs/libs/gst-plugins-base-libs-sections.txt: Integrate libgstfft into the docs. * tests/check/Makefile.am: * tests/check/libs/fft.c: (GST_START_TEST), (fft_suite), (main): Add unit tests for libgstfft, currently only testing the FFT. Unit tests for IFFT will follow soon.
2007-09-06 07:00:36 +00:00
/* GStreamer
* Copyright (C) <2007> Sebastian Dröge <slomo@circular-chaos.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_FFT_F32_H__
#define __GST_FFT_F32_H__
#include <glib.h>
#include <gst/gst.h>
#include "gstfft.h"
typedef struct _GstFFTF32 GstFFTF32;
typedef struct _GstFFTF32Complex GstFFTF32Complex;
/**
* GstFFTF32:
*
* Instance structure for #GstFFTF32.
*
*/
struct _GstFFTF32 {
/* <private> */
void * cfg;
gboolean inverse;
gint len;
gpointer _padding[GST_PADDING];
};
/* Copy of kiss_fft_f32_cpx for documentation reasons,
* do NOT change! */
/**
* GstFFTF32Complex:
* @r: Real part
* @i: Imaginary part
*
* Data type for complex numbers composed of
* 32 bit float.
*
*/
struct _GstFFTF32Complex
{
gfloat r;
gfloat i;
};
/* Functions */
GstFFTF32 * gst_fft_f32_new (gint len, gboolean inverse);
void gst_fft_f32_fft (GstFFTF32 *self, const gfloat *timedata, GstFFTF32Complex *freqdata);
void gst_fft_f32_inverse_fft (GstFFTF32 *self, const GstFFTF32Complex *freqdata, gfloat *timedata);
void gst_fft_f32_free (GstFFTF32 *self);
void gst_fft_f32_window (GstFFTF32 *self, gfloat *timedata, GstFFTWindow window);
#endif /* __GST_FFT_F32_H__ */