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Refactoring: only one nextInsertion is needed

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This commit is contained in:
Hajime Hoshi 2015-01-23 21:51:21 +09:00
parent 8d250c6b25
commit 88ac129dd6
1 changed files with 10 additions and 15 deletions
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25
internal/audio/audio_js.go
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@ -27,10 +27,11 @@ var context js.Object
const bufferSize = 1024
const SampleRate = 44100
var nextInsertion = 0
type channel struct {
l []float32
r []float32
nextInsertion int
l []float32
r []float32
}
var channels = make([]*channel, 16)
@ -84,8 +85,8 @@ func Init() {
usedLen := min(bufferSize, len(ch.l))
ch.l = ch.l[usedLen:]
ch.r = ch.r[usedLen:]
ch.nextInsertion -= min(bufferSize, ch.nextInsertion)
}
nextInsertion -= min(bufferSize, nextInsertion)
for i := 0; i < bufferSize; i++ {
// TODO: Use copyFromChannel?
if len(inputL) <= i {
@ -100,12 +101,7 @@ func Init() {
}
func Update() {
for _, ch := range channels {
if len(ch.l) == 0 {
continue
}
ch.nextInsertion += SampleRate / 60
}
nextInsertion += SampleRate / 60
}
func Start() {
@ -116,14 +112,14 @@ func Start() {
func channelAt(i int) *channel {
if i == -1 {
for _, ch := range channels {
if len(ch.l) <= ch.nextInsertion {
if len(ch.l) <= nextInsertion {
return ch
}
}
return nil
}
ch := channels[i]
if len(ch.l) <= ch.nextInsertion {
if len(ch.l) <= nextInsertion {
return ch
}
return nil
@ -138,9 +134,8 @@ func Append(i int, l []float32, r []float32) bool {
if ch == nil {
return false
}
print(ch.nextInsertion)
ch.l = append(ch.l, make([]float32, ch.nextInsertion-len(ch.l))...)
ch.r = append(ch.r, make([]float32, ch.nextInsertion-len(ch.r))...)
ch.l = append(ch.l, make([]float32, nextInsertion-len(ch.l))...)
ch.r = append(ch.r, make([]float32, nextInsertion-len(ch.r))...)
ch.l = append(ch.l, l...)
ch.r = append(ch.r, r...)
return true