shithub: ft²

ref: 8178985f5bac086a163f6d114a22c4dfd06b7000
dir: /src/scopes/ft2_scopes.h/

#pragma once

#include <stdint.h>
#include <stdbool.h>
#include "../ft2_header.h"
#include "../ft2_audio.h"

#define SCOPE_INTRP_SCALE 32767
#define SCOPE_INTRP_SCALE_BITS 15 /* ceil(log2(SCOPE_INTRP_SCALE)) */
#define SCOPE_INTRP_PHASES 1024 /* good enough for the FT2 scopes */
#define SCOPE_INTRP_PHASES_BITS 10 /* log2(SCOPE_INTRP_PHASES) */

#define SCOPE_HEIGHT 36

#define SCOPE_FRAC_BITS 32
#define SCOPE_FRAC_SCALE ((int64_t)1 << SCOPE_FRAC_BITS)
#define SCOPE_FRAC_MASK (SCOPE_FRAC_SCALE-1)

int32_t getSamplePosition(uint8_t ch);
void stopAllScopes(void);
void refreshScopes(void);
bool testScopesMouseDown(void);
void drawScopes(void);
void drawScopeFramework(void);
bool initScopes(void);

// actual scope data
typedef struct scope_t
{
	volatile bool active;
	const int8_t *base8;
	const int16_t *base16;
	bool wasCleared, sample16Bit, samplingBackwards;
	uint8_t loopType;
	int32_t volume, loopStart, loopLength, sampleEnd, position;
	uint64_t delta, drawDelta, positionFrac;
} scope_t;

typedef struct lastChInstr_t
{
	uint8_t smpNum, instrNum;
} lastChInstr_t;

extern lastChInstr_t lastChInstr[MAX_CHANNELS];