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audio: Bug fix: always fill zero values (#147)

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This commit is contained in:
Hajime Hoshi 2016-02-08 04:27:21 +09:00
parent 4b4802419b
commit 45329ab32f
2 changed files with 9 additions and 6 deletions
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2
internal/audio/audio.go
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@ -119,12 +119,10 @@ func loadChannelBuffer(channel int, bufferSize int) []byte {
if !audioEnabled { if !audioEnabled {
return return
} }
ch := channels[channel] ch := channels[channel]
length := min(len(ch.buffer), bufferSize) length := min(len(ch.buffer), bufferSize)
input := ch.buffer[:length] input := ch.buffer[:length]
ch.buffer = ch.buffer[length:] ch.buffer = ch.buffer[length:]
r = input r = input
}) })
return r return r

13
internal/audio/audio_js.go
View File

@ -44,16 +44,21 @@ func toLR(data []byte) ([]int16, []int16) {
} }
func (a *audioProcessor) Process(e *js.Object) { func (a *audioProcessor) Process(e *js.Object) {
// Can't use 'go' here. Probably it may cause race conditions. // Can't use goroutines here. Probably it may cause race conditions.
b := e.Get("outputBuffer") b := e.Get("outputBuffer")
l := b.Call("getChannelData", 0) l := b.Call("getChannelData", 0)
r := b.Call("getChannelData", 1) r := b.Call("getChannelData", 1)
inputL, inputR := toLR(loadChannelBuffer(a.channel, bufferSize*4)) inputL, inputR := toLR(loadChannelBuffer(a.channel, bufferSize*4))
const max = 1 << 15 const max = 1 << 15
for i := 0; i < len(inputL); i++ { for i := 0; i < bufferSize; i++ {
// TODO: Use copyToChannel? // TODO: Use copyToChannel?
l.SetIndex(i, float64(inputL[i])/max) if i < len(inputL) {
r.SetIndex(i, float64(inputR[i])/max) l.SetIndex(i, float64(inputL[i])/max)
r.SetIndex(i, float64(inputR[i])/max)
} else {
l.SetIndex(i, 0)
r.SetIndex(i, 0)
}
} }
} }