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/*
* Sample based oscillator
*/
public class SampOsc extends Chubgraph {
static string @__sourceDir; /* pseudo-private */
inlet => blackhole;
inlet.last() => float __last_in; /* pseudo-private */
1 => float __freq; /* pseudo-private */
SndBuf __buf => outlet; /* pseudo-private */
fun float
freq(float f)
{
return f => __freq;
}
fun float
freq()
{
if (inlet.last() != __last_in)
inlet.last() => __last_in => __freq;
return __freq;
}
/*
* __buf shortcuts
*/
fun void
read(string file)
{
file => __buf.read;
}
fun float
rate(float v)
{
return v => __buf.rate;
}
fun float
rate()
{
return __buf.rate();
}
/*
* Wait till next loop point but no longer than `max_latency',
* so frequency changes get applied with a maximum of 100::ms latency.
* NOTE: Due to a ChucK bug (?), simply killing and restarting the shred
* does not work very well.
*/
100::ms => dur max_latency;
fun void
__loop() /* pseudo-private */
{
now => time last_trigger;
while (second/freq() => dur interval) {
if (last_trigger+interval - now > max_latency) {
max_latency => now;
} else {
interval +=> last_trigger;
if (last_trigger > now)
last_trigger => now;
0 => __buf.pos;
}
}
/* never reached */
}
spork ~ __loop();
__sourceDir+"/pulse.wav" => read;
1 => rate;
}
/* static initialization */
me.sourceDir() => SampOsc.__sourceDir;
/* BUG WORKAROUND: me.sourceDir() == "" if VM is started with --loop */
if (SampOsc.__sourceDir == "")
"lib" => SampOsc.__sourceDir;
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