mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-10 03:19:40 +00:00
9022ca9d1b
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.
49 lines
1.5 KiB
C
49 lines
1.5 KiB
C
/* 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.
|
|
*/
|
|
|
|
#include <glib.h>
|
|
#include <math.h>
|
|
|
|
#ifndef __GST_FFT_H__
|
|
#define __GST_FFT_H__
|
|
|
|
/**
|
|
* GstFFTWindow:
|
|
* @GST_FFT_WINDOW_RECTANGULAR: Rectangular window
|
|
* @GST_FFT_WINDOW_HAMMING: Hamming window
|
|
* @GST_FFT_WINDOW_HANN: Hann (sometimes also called Hanning) window
|
|
* @GST_FFT_WINDOW_BARTLETT: Bartlett window
|
|
* @GST_FFT_WINDOW_BLACKMAN: Blackman window
|
|
*
|
|
* The various window functions available.
|
|
*/
|
|
typedef enum
|
|
{
|
|
GST_FFT_WINDOW_RECTANGULAR,
|
|
GST_FFT_WINDOW_HAMMING,
|
|
GST_FFT_WINDOW_HANN,
|
|
GST_FFT_WINDOW_BARTLETT,
|
|
GST_FFT_WINDOW_BLACKMAN
|
|
} GstFFTWindow;
|
|
|
|
/* Functions */
|
|
|
|
gint gst_fft_next_fast_length (gint n);
|
|
|
|
#endif /* __GST_FFT_H__ */
|