TickSignature

#include "transport.hh"

Classes
struct	Beat
struct	Time

Public Member Functions
int32	bar_from_tick (int64 tick) const
int32	bar_ticks () const
int64	bar_to_tick (int32 bar) const
Beat	beat_from_tick (int64 tick) const
int32	beat_ticks () const
int64	beat_to_tick (const Beat &beat) const
const uint8 &	beat_unit () const
const uint8 &	beats_per_bar () const
double	bpm () const
double	inv_samplerate () const
TickSignature &	operator= (const TickSignature &src)
int64	sample_from_tick (int64 tick) const
int64	sample_to_tick (int64 sample) const
double	samplerate () const
void	set_bpm (double bpm)
void	set_samplerate (uint samplerate)
bool	set_signature (uint8 beats_per_bar, uint8 beat_unit)
int64	start_offset () const
double	ticks_per_sample () const
	TickSignature ()
	TickSignature (const TickSignature &other)
	TickSignature (double bpm, uint8 beats_per_bar, uint8 beat_unit)
Time	time_from_tick (int64 tick) const
int64	time_to_tick (const Time &time) const

Protected Attributes
int32	bar_ticks_
int32	beat_ticks_
uint8	beat_unit_
uint8	beats_per_bar_
double	bpm_
double	inv_samplerate_
double	inv_ticks_per_second_
double	sample_per_ticks_
int32	samplerate_
int64	ticks_per_minute_
double	ticks_per_sample_
double	ticks_per_second_

Static Protected Attributes
static constexpr const int64	offset_

Detailed Description

Musical time signature and tick conversions.

Constructor & Destructor Documentation

TickSignature() [1/3]

TickSignature

(

)

TickSignature() [2/3]

TickSignature	(	double	bpm,
		uint8	beats_per_bar,
		uint8	beat_unit
	)

TickSignature() [3/3]

TickSignature

(

const TickSignature &

other

)

Member Function Documentation

samplerate()

double samplerate

(

)

const

inv_samplerate()

double inv_samplerate

(

)

const

ticks_per_sample()

double ticks_per_sample

(

)

const

sample_to_tick()

int64 sample_to_tick

(

int64

sample

)

const

sample_from_tick()

int64 sample_from_tick

(

int64

tick

)

const

bpm()

double bpm

(

)

const

bar_ticks()

int32 bar_ticks

(

)

const

beat_ticks()

int32 beat_ticks

(

)

const

start_offset()

int64 start_offset

(

)

const

set_samplerate()

void set_samplerate

(

uint

samplerate

)

Assign sample rate.

set_bpm()

void set_bpm

(

double

bpm

)

Assign tempo in beats per minute.

time_from_tick()

TickSignature::Time time_from_tick

(

int64

tick

)

const

Calculate time from tick, requires set_bpm().

time_to_tick()

int64 time_to_tick

(

const Time &

time

)

const

Calculate tick from time, requires set_bpm().

set_signature()

bool set_signature	(	uint8	beats_per_bar,
		uint8	beat_unit
	)

Assign time signature and offset for the signature to take effect.

beats_per_bar()

const uint8 & beats_per_bar

(

)

const

beat_unit()

const uint8 & beat_unit

(

)

const

bar_from_tick()

int32 bar_from_tick

(

int64

tick

)

const

Calculate bar from tick, requires set_signature().

bar_to_tick()

int64 bar_to_tick

(

int32

bar

)

const

Calculate tick from bar, requires set_signature().

beat_from_tick()

TickSignature::Beat beat_from_tick

(

int64

tick

)

const

Calculate beat from tick, requires set_signature().

beat_to_tick()

int64 beat_to_tick

(

const Beat &

beat

)

const

Calculate tick from beat, requires set_signature().

operator=()

TickSignature & operator=

(

const TickSignature &

src

)

Member Data Documentation

offset_

constexpr const int64 offset_

staticconstexprprotected

beats_per_bar_

uint8 beats_per_bar_

protected

Upper numeral (numerator), how many beats constitute a bar.

beat_unit_

uint8 beat_unit_

protected

Lower numeral (denominator in [1 2 4 8 16]), note value that represents one beat.

beat_ticks_

int32 beat_ticks_

protected

bar_ticks_

int32 bar_ticks_

protected

samplerate_

int32 samplerate_

protected

Sample rate (mixing frequency) in Hz.

bpm_

double bpm_

protected

Current tempo in beats per minute.

ticks_per_minute_

int64 ticks_per_minute_

protected

ticks_per_second_

double ticks_per_second_

protected

inv_ticks_per_second_

double inv_ticks_per_second_

protected

ticks_per_sample_

double ticks_per_sample_

protected

sample_per_ticks_

double sample_per_ticks_

protected

inv_samplerate_

double inv_samplerate_

protected

Precalculated `1.0 / samplerate`.