Clementine-audio-player-Mac.../gst/moodbar/gstfftwspectrum.h

69 lines
1.9 KiB
C

/* GStreamer FFTW-based signal-to-spectrum converter
* Copyright (C) 2006 Joseph Rabinoff <bobqwatson@yahoo.com>
*/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#ifndef __GST_FFTWSPECTRUM_H__
#define __GST_FFTWSPECTRUM_H__
#include <gst/gst.h>
#include <fftw3.h>
G_BEGIN_DECLS
/* #defines don't like whitespacey bits */
#define GST_TYPE_FFTWSPECTRUM \
(gst_fftwspectrum_get_type())
#define GST_FFTWSPECTRUM(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_FFTWSPECTRUM,GstFFTWSpectrum))
#define GST_FFTWSPECTRUM_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_FFTWSPECTRUM,GstFFTWSpectrumClass))
typedef struct _GstFFTWSpectrum GstFFTWSpectrum;
typedef struct _GstFFTWSpectrumClass GstFFTWSpectrumClass;
struct _GstFFTWSpectrum
{
GstElement element;
GstPad *sinkpad, *srcpad;
/* Stream data */
gint rate, size, step;
/* Actual queued (incoming) stream */
gdouble *samples;
gint numsamples;
GstClockTime timestamp; /* Timestamp of the first sample */
guint64 offset; /* Offset of the first sample */
/* State data for fftw */
double *fftw_in;
double *fftw_out;
fftw_plan fftw_plan;
/* Properties */
gint32 def_size, def_step;
gboolean hi_q;
};
struct _GstFFTWSpectrumClass
{
GstElementClass parent_class;
};
GType gst_fftwspectrum_get_type (void);
G_END_DECLS
#endif /* __GST_FFTWSPECTRUM_H__ */