midi_function.h

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// SPDX-FileCopyrightText: © 2020, 2023 Alexandros Theodotou <alex@zrythm.org>
// SPDX-License-Identifier: LicenseRef-ZrythmLicense
 
#ifndef __AUDIO_MIDI_FUNCTION_H__
#define __AUDIO_MIDI_FUNCTION_H__
 
#include "dsp/curve.h"
#include "utils/types.h"
#include "utils/yaml.h"
 
#include <glib/gi18n.h>
 
typedef struct ArrangerSelections ArrangerSelections;
 
typedef enum MidiFunctionType
{
  MIDI_FUNCTION_CRESCENDO,
  MIDI_FUNCTION_FLAM,
  MIDI_FUNCTION_FLIP_HORIZONTAL,
  MIDI_FUNCTION_FLIP_VERTICAL,
  MIDI_FUNCTION_LEGATO,
  MIDI_FUNCTION_PORTATO,
  MIDI_FUNCTION_STACCATO,
  MIDI_FUNCTION_STRUM,
} MidiFunctionType;
 
static const cyaml_strval_t midi_function_type_strings[] = {
  {N_ ("Crescendo"), MIDI_FUNCTION_CRESCENDO      },
  { N_ ("Flam"),     MIDI_FUNCTION_FLAM           },
  { N_ ("Flip H"),   MIDI_FUNCTION_FLIP_HORIZONTAL},
  { N_ ("Flip V"),   MIDI_FUNCTION_FLIP_VERTICAL  },
  { N_ ("Legato"),   MIDI_FUNCTION_LEGATO         },
  { N_ ("Portato"),  MIDI_FUNCTION_PORTATO        },
  { N_ ("Staccato"), MIDI_FUNCTION_STACCATO       },
  { N_ ("Strum"),    MIDI_FUNCTION_STRUM          },
};
 
typedef struct MidiFunctionOpts
{
  midi_byte_t start_vel;
  midi_byte_t end_vel;
  midi_byte_t vel;
 
  bool   ascending;
  double time;
  double amount;
 
  CurveAlgorithm curve_algo;
  double         curviness;
 
} MidiFunctionOpts;
 
static inline const char *
midi_function_type_to_string (MidiFunctionType type)
{
  return midi_function_type_strings[type].str;
}
 
char *
midi_function_type_to_string_id (MidiFunctionType type);
 
MidiFunctionType
midi_function_string_id_to_type (const char * id);
 
int
midi_function_apply (
  ArrangerSelections * sel,
  MidiFunctionType     type,
  MidiFunctionOpts     opts,
  GError **            error);
 
#endif