spectrum_analyzer.h

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// SPDX-FileCopyrightText: © 2023 Alexandros Theodotou <alex@zrythm.org>
// SPDX-License-Identifier: LicenseRef-ZrythmLicense
 
#ifndef __GUI_WIDGETS_SPECTRUM_ANALYZER_H__
#define __GUI_WIDGETS_SPECTRUM_ANALYZER_H__
 
#include "utils/types.h"
 
#include <gtk/gtk.h>
 
#include <kiss_fft.h>
 
TYPEDEF_STRUCT (Port);
TYPEDEF_STRUCT (PeakFallSmooth);
 
#define SPECTRUM_ANALYZER_WIDGET_TYPE (spectrum_analyzer_widget_get_type ())
G_DECLARE_FINAL_TYPE (
  SpectrumAnalyzerWidget,
  spectrum_analyzer_widget,
  Z,
  SPECTRUM_ANALYZER_WIDGET,
  GtkWidget)
 
#define SPECTRUM_ANALYZER_MAX_BLOCK_SIZE 32768
#define SPECTRUM_ANALYZER_MIN_FREQ 20.f
 
typedef struct _SpectrumAnalyzerWidget
{
  GtkWidget parent_instance;
 
  Port * port;
 
  float * bufs[2];
 
  size_t buf_sz[2];
 
  kiss_fft_cpx * fft_in;
  kiss_fft_cpx * fft_out;
 
  kiss_fft_cfg fft_config;
  int          last_block_size;
 
  PeakFallSmooth ** bins;
 
} SpectrumAnalyzerWidget;
 
void
spectrum_analyzer_widget_setup_engine (SpectrumAnalyzerWidget * self);
 
SpectrumAnalyzerWidget *
spectrum_analyzer_widget_new_for_port (Port * port);
 
#endif