ref: bec88f14df1e254456db2eaaefa414c0859e40aa
dir: /LEAF/Inc/leaf-midi.h/
/*==============================================================================
leaf-midi.h
Created: 30 Nov 2018 11:29:26am
Author: airship
==============================================================================*/
#ifndef LEAF_MIDI_H_INCLUDED
#define LEAF_MIDI_H_INCLUDED
#ifdef __cplusplus
extern "C" {
#endif
//==============================================================================
#include "leaf-global.h"
#include "leaf-mempool.h"
#include "leaf-math.h"
#include "leaf-envelopes.h"
/*!
* @internal
* Header.
* @include basic-oscillators.h
* @example basic-oscillators.c
* An example.
*/
//==============================================================================
// ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
/*!
* @defgroup tstack tStack
* @ingroup midi
* @brief A basic stack of integers with a fixed max size of 128, used by tPoly to keep track of MIDI notes.
* @{
*/
// STACK implementation (fixed size)
#define STACK_SIZE 128
typedef struct _tStack
{
int data[STACK_SIZE];
uint16_t pos;
uint16_t size;
uint16_t capacity;
oBool ordered;
} _tStack;
typedef _tStack* tStack;
//! Initialize a tStack to the default LEAF mempool.
/*!
@param stack A pointer to the tStack to be initialized.
*/
void tStack_init (tStack* const stack);
//! Free a tStack from the default LEAF mempool.
/*!
@param stack A pointer to the tStack to be freed.
*/
void tStack_free (tStack* const stack);
//! Initialize a tStack to a specified mempool.
/*!
@param stack A pointer to the tStack to be initialized.
@param pool A pointer to the tMempool to which the tStack should be initialized.
*/
void tStack_initToPool (tStack* const stack, tMempool* const pool);
//! Free a tStack from a specified mempool.
/*!
@param stack A pointer to the tStack to be freed.
@param pool A pointer to the tMempool from which the tStack should be freed.
*/
void tStack_freeFromPool (tStack* const stack, tMempool* const pool);
//! Set the capacity of the stack.
/*!
@param stack A pointer to the relevant tStack.
@param cap The new capacity.
*/
void tStack_setCapacity (tStack* const stack, uint16_t cap);
//! Add a value to the stack only if that value is not already in the stack.
/*!
@param stack A pointer to the relevant tStack.
@param item The value to be added.
*/
int tStack_addIfNotAlreadyThere (tStack* const stack, uint16_t item);
//! Add a value to the stack.
/*!
@param stack A pointer to the relevant tStack.
@param item The value to be added.
*/
void tStack_add (tStack* const stack, uint16_t item);
//! Remove a single instance of a value from the stack.
/*!
@param stack A pointer to the relevant tStack.
@param item The value to be removed.
*/
int tStack_remove (tStack* const stack, uint16_t item);
//! Clear the stack.
/*!
@param stack A pointer to the relevant tStack.
*/
void tStack_clear (tStack* const stack);
//! Get the first value in the stack.
/*!
@param stack A pointer to the relevant tStack.
@return The first value in the stack.
*/
int tStack_first (tStack* const stack);
//! Get the current size of the stack.
/*!
@param stack A pointer to the relevant tStack.
@return The current size of the stack.
*/
int tStack_getSize (tStack* const stack);
//! Check if the stack contains a value, and if it does, get the index of that value.
/*!
@param stack A pointer to the relevant tStack.
@param item The value to check against the stack.
@return The index of the value or -1 if the stack does not contain the value.
*/
int tStack_contains (tStack* const stack, uint16_t item);
//! Get the next value in the stack, starting from the earliest added values.
/*!
@param stack A pointer to the relevant tStack.
@return The next value in the stack or -1 if there are no values in the stack.
*/
int tStack_next (tStack* const stack);
//! Get the value at a given index of the stack.
/*!
@param stack A pointer to the relevant tStack.
@param index The index of the stack from which to get a value.
@return The value at the given index.
*/
int tStack_get (tStack* const stack, int index);
/*! @} */
/*!
* @defgroup tpoly tPoly
* @ingroup midi
* @brief An object for polyphonic handling.
* @{
*/
/* tPoly */
typedef struct _tPoly
{
tStack stack;
tStack orderStack;
tRamp* ramps;
float* rampVals;
oBool* firstReceived;
float glideTime;
oBool pitchGlideIsActive;
int numVoices;
int maxNumVoices;
//int voices[POLY_NUM_MAX_VOICES][2];
int** voices;
int notes[128][2];
int CCs[128];
uint8_t CCsRaw[128];
int lastVoiceToChange;
float pitchBend;
tRamp pitchBendRamp;
int currentNote;
int currentVoice;
int currentVelocity;
int maxLength;
} _tPoly;
typedef _tPoly* tPoly;
/* MPoly*/
//! Initialize a tPoly to the default LEAF mempool.
/*!
@param poly A pointer to the tPoly to be initialized.
@param maxNumVoices The maximum number of voices this tPoly can handle at once.
*/
void tPoly_init (tPoly* const poly, int maxNumVoices);
//! Free a tPoly from the default LEAF mempool.
/*!
@param poly A pointer to the tPoly to be freed.
*/
void tPoly_free (tPoly* const poly);
//! Initialize a tPoly to a specified mempool.
/*!
@param poly A pointer to the tPoly to be initialized.
@param pool A pointer to the tMempool to which the tPoly should be initialized.
*/
void tPoly_initToPool (tPoly* const poly, int maxNumVoices, tMempool* const pool);
//! Free a tPoly from a specified mempool.
/*!
@param poly A pointer to the tPoly to be freed.
@param pool A pointer to the tMempool from which the tPoly should be freed.
*/
void tPoly_freeFromPool (tPoly* const poly, tMempool* const pool);
//! Add a note with a given velocity to the poly handler.
/*!
@param poly A pointer to the relevant tPoly.
@param note The MIDI note number to add.
@param vel The MIDI velocity of the note to add.
@return The voice that will play the note.
*/
int tPoly_noteOn (tPoly* const poly, int note, uint8_t vel);
//! Remove a note from the poly handler.
/*!
@param poly A pointer to the relevant tPoly.
@param note The MIDI note number to remove.
@return The voice that was playing the removed note.
*/
int tPoly_noteOff (tPoly* const poly, uint8_t note);
void tPoly_orderedAddToStack (tPoly* const poly, uint8_t note);
//! Set the number of voices available to play notes.
/*!
@param poly A pointer to the relevant tPoly.
@param numVoices The new number of available voices. Cannot be greater than the max number voices given in tPoly_init().
*/
void tPoly_setNumVoices (tPoly* const poly, uint8_t numVoices);
//! Set whether pitch glide over note changes in voices is active.
/*!
@param poly A pointer to the relevant tPoly.
@param isActive Whether pitch glide should be active or not.
*/
void tPoly_setPitchGlideActive (tPoly* const poly, oBool isActive);
//! Set how long pitch glide over note changes in voices takes.
/*!
@param poly A pointer to the relevant tPoly.
@param t The time to glide in milliseconds.
*/
void tPoly_setPitchGlideTime (tPoly* const poly, float t);
//! Set the amount of pitch bend
/*!
@param poly A pointer to the relevant tPoly.
@param pitchBend The new amount of pitch bend.
*/
void tPoly_setPitchBend (tPoly* const poly, float pitchBend);
void tPoly_setBendGlideTime (tPoly* const poly, float t);
void tPoly_setBendSamplesPerTick (tPoly* const poly, float t);
//! Execute all tick-rate changes in the poly handler's pitch, including glide and bend.
/*!
@param poly A pointer to the relevant tPoly.
*/
void tPoly_tickPitch (tPoly* const poly);
//! Execute the tick-rate change of the poly handler's pitch glide.
/*!
@param poly A pointer to the relevant tPoly.
*/
void tPoly_tickPitchGlide (tPoly* const poly);
//! Execute the tick-rate change of the poly handler's pitch bend.
/*!
@param poly A pointer to the relevant tPoly.
*/
void tPoly_tickPitchBend (tPoly* const poly);
//! Get the current number of voices available to play notes.
/*!
@param poly A pointer to the relevant tPoly.
@return The current number of voices available to play notes.
*/
int tPoly_getNumVoices (tPoly* const poly);
//! Get the number of voices currently playing notes.
/*!
@param poly A pointer to the relevant tPoly.
@return The number of voices currently playing notes.
*/
int tPoly_getNumActiveVoices (tPoly* const poly);
//! Get the current pitch of a given voice.
/*!
@param poly A pointer to the relevant tPoly.
@param voice The voice to get the pitch of.
@return The current pitch of the given voice as a fractional MIDI note number.
*/
float tPoly_getPitch (tPoly* const poly, uint8_t voice);
//! Get the current MIDI note number of a given voice.
/*!
@param poly A pointer to the relevant tPoly.
@param voice The voice to get the MIDI note number of.
@return The MIDI note number of the given voice.
*/
int tPoly_getKey (tPoly* const poly, uint8_t voice);
//! Get the current MIDI velocity of a given voice.
/*!
@param poly A pointer to the relevant tPoly.
@param voice The voice to get the MIDI velocity of.
@return The current MIDI velocity of the given voice.
*/
int tPoly_getVelocity (tPoly* const poly, uint8_t voice);
//! Get the current play state of a given voice.
/*!
@param poly A pointer to the relevant tPoly.
@param voice The voice to get the state of.
@return The current play state of the given voice.
*/
int tPoly_isOn (tPoly* const poly, uint8_t voice);
/*! @} */
//==============================================================================
#ifdef __cplusplus
}
#endif
#endif // LEAF_MIDI_H_INCLUDED
//==============================================================================