curve.h

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// SPDX-FileCopyrightText: © 2020, 2023 Alexandros Theodotou <alex@zrythm.org>
// SPDX-License-Identifier: LicenseRef-ZrythmLicense
 
#ifndef __AUDIO_CURVE_H__
#define __AUDIO_CURVE_H__
 
#include "utils/yaml.h"
 
#include <glib/gi18n.h>
 
#include "gtk_wrapper.h"
 
#define CURVE_OPTIONS_SCHEMA_VERSION 1
 
#define CURVE_SUPERELLIPSE_CURVINESS_BOUND 0.82
#define CURVE_EXPONENT_CURVINESS_BOUND 0.95
#define CURVE_VITAL_CURVINESS_BOUND 1.00
 
enum class CurveAlgorithm
{
  EXPONENT,
 
  SUPERELLIPSE,
 
  VITAL,
 
  PULSE,
 
  LOGARITHMIC,
};
 
const char **
curve_algorithm_get_strings (void);
 
const char *
curve_algorithm_to_str (CurveAlgorithm algo);
 
typedef struct CurveOptions
{
  int schema_version;
 
  CurveAlgorithm algo;
 
  double curviness;
} CurveOptions;
 
typedef struct CurveFadePreset
{
  char *       id;
  char *       label;
  CurveOptions opts;
} CurveFadePreset;
 
NONNULL void
curve_opts_init (CurveOptions * opts);
 
RETURNS_NONNULL
GPtrArray *
curve_get_fade_presets (void);
 
void
curve_algorithm_get_localized_name (CurveAlgorithm algo, char * buf);
 
gboolean
curve_algorithm_get_g_settings_mapping (
  GValue *   value,
  GVariant * variant,
  gpointer   user_data);
 
GVariant *
curve_algorithm_set_g_settings_mapping (
  const GValue *       value,
  const GVariantType * expected_type,
  gpointer             user_data);
 
HOT NONNULL double
curve_get_normalized_y (double x, CurveOptions * opts, int start_higher);
 
bool
curve_options_are_equal (const CurveOptions * a, const CurveOptions * b);
 
#endif