ldrive 1shot
drives a phasor (saw-wave) for reading/writing data
Inlets
frac32.positive offset inside the table
frac32.positive length of the area to index,or loop end
frac32.positive position inside range on reset
frac32.bipolar speed modulation
bool32.rising trigger playback
Outlets
bool32 playback state
frac32buffer.positive relative position inside table
int32 playhead position inside range in samples
int32 length of range in samples
frac32.bipolar total speed
Parameters
frac32.s.map speed ,+ 64 normal speed forward, - 64 backward
Attributes
objref table
int32_t index;
uint8_t shift;
int ntrig;
int32_t t_speed;
int32_t re;
int32_t rs;
int32_t start;
int32_t loopstart;
int32_t lrange;
bool play;shift = (27 - attr_table.LENGTHPOW);// scale ranges up 8 times to achieve decent resolution for parameter speed
lrange = inlet_range << 3;
start = ___SMMUL(inlet_range, inlet_startpoint) << 8;
re = (t_speed > 0) ? lrange - (4 << shift) : lrange;
rs = (t_speed > 0) ? start : start - (4 << shift);
t_speed = (((inlet_speed + param_speed) << 3) >> attr_table.LENGTHPOW) +
((inlet_speed + param_speed) > 0);
if (inlet_play && (!ntrig)) {
ntrig = 1;
index = (t_speed < 0) ? lrange : start;
play = 1;
} else if (!(inlet_play > 0))
ntrig = 0;
if (!inlet_range)
play = 0;
outlet_spos = (((index >> 3) >> shift) > 0) ? ((index >> 3) >> shift) : 0;
outlet_stotal = inlet_range >> shift;
outlet_speed = inlet_speed + param_speed;
outlet_play = play;if ((index > re) || (index < rs))
play = 0;
if (play) {
outlet_pos = __USAT(((index >> 3) + inlet_offset), 27);
index += t_speed;
} else
outlet_pos = 1 << 27;