// OutputContinueTo to mix and output as []byte via stdout, up to a specified duration-since-start
func OutputContinueTo(t time.Duration) {
deltaDur := t - outputToDur
deltaTz := spec.Tz(masterFreq * float64((deltaDur)/time.Second))
debug.Printf("mix.OutputContinueTo(%+v) deltaDur:%+v nowTz:%+v deltaTz:%+v begin...", t, deltaDur, nowTz, deltaTz)
bind.OutputNext(deltaTz)
outputToDur = t
debug.Printf("mix.OutputContinueTo(%+v) ...done! nowTz:%+v outputToDur:%+v", t, nowTz, outputToDur)
}
// TODO:
// Make a new empty map[string]*Source, e.g. keepSource
// While iterating over the ready & active fires (see issues #11 and #18; implemented as of pull #29) copy any used *Source to the new keepSource
// Replace the mixSource with keepSource
func mixCycle() {
var f *fire.Fire
// for garbage collection of unused sources:
keepSource := make(map[string]bool)
// if a fire is near-to-playback, move it to the live fire queue
keepReadyFires := make([]*fire.Fire, 0)
for _, f = range mixReadyFires {
keepSource[f.Source] = true
if f.BeginTz < nowTz+masterCycleDurTz*2 { // for now, double a mix cycle is consider near-playback
mixLiveFires = append(mixLiveFires, f)
} else {
keepReadyFires = append(keepReadyFires, f)
}
}
mixReadyFires = keepReadyFires
// keep only active fires
keepLiveFires := make([]*fire.Fire, 0)
for _, f = range mixLiveFires {
if f.IsAlive() {
keepSource[f.Source] = true
keepLiveFires = append(keepLiveFires, f)
} else {
f.Teardown()
}
}
mixLiveFires = keepLiveFires
source.Prune(keepSource)
nextCycleTz = nowTz + masterCycleDurTz
if debug.Active() && source.Count() > 0 {
debug.Printf("mix [%dz] fire-ready:%d fire-active:%d sources:%d\n", nowTz, len(mixReadyFires), len(mixLiveFires), source.Count())
}
}
func (s *Source) load() {
s.state = LOADING
s.sample, s.audioSpec = bind.LoadWAV(s.URL)
if s.audioSpec == nil {
// TODO: handle errors loading file
debug.Printf("could not load WAV %s\n", s.URL)
}
s.maxTz = spec.Tz(len(s.sample))
s.state = READY
}