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edb4a505d7
Original commit message from CVS: * docs/libs/gst-plugins-base-libs-sections.txt: * gst-libs/gst/fft/gstfftf32.c: * gst-libs/gst/fft/gstfftf32.h: * gst-libs/gst/fft/gstfftf64.c: * gst-libs/gst/fft/gstfftf64.h: * gst-libs/gst/fft/gstffts16.c: * gst-libs/gst/fft/gstffts16.h: * gst-libs/gst/fft/gstffts32.c: * gst-libs/gst/fft/gstffts32.h: * tests/check/libs/fft.c: (GST_START_TEST): Remove the magnitude and phase calculation functions as these have very special use cases and can't even be used for the spectrum element. Also adjust the docs to mention some properties of the used FFT implemention, i.e. how the values are scaled. Fixes #492098.
72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
/* GStreamer
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* Copyright (C) <2007> Sebastian Dröge <slomo@circular-chaos.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_FFT_S32_H__
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#define __GST_FFT_S32_H__
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#include <glib.h>
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#include <gst/gst.h>
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#include "gstfft.h"
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typedef struct _GstFFTS32 GstFFTS32;
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typedef struct _GstFFTS32Complex GstFFTS32Complex;
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/**
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* GstFFTS32:
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*
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* Instance structure for #GstFFTS32.
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*
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*/
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struct _GstFFTS32 {
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/* <private> */
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void * cfg;
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gboolean inverse;
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gint len;
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gpointer _padding[GST_PADDING];
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};
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/* Copy of kiss_fft_s32_cpx for documentation reasons,
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* do NOT change! */
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/**
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* GstFFTS32Complex:
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* @r: Real part
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* @i: Imaginary part
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*
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* Data type for complex numbers composed of
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* signed 32 bit integers.
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*
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*/
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struct _GstFFTS32Complex
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{
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gint32 r;
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gint32 i;
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};
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/* Functions */
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GstFFTS32 * gst_fft_s32_new (gint len, gboolean inverse);
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void gst_fft_s32_fft (GstFFTS32 *self, const gint32 *timedata, GstFFTS32Complex *freqdata);
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void gst_fft_s32_inverse_fft (GstFFTS32 *self, const GstFFTS32Complex *freqdata, gint32 *timedata);
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void gst_fft_s32_free (GstFFTS32 *self);
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void gst_fft_s32_window (GstFFTS32 *self, gint32 *timedata, GstFFTWindow window);
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#endif /* __GST_FFT_S32_H__ */
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