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audio: Make sure to fill 4096 bytes

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This commit is contained in:
Hajime Hoshi 2016-03-06 03:48:47 +09:00
parent e69b44e327
commit c090805021
1 changed files with 25 additions and 18 deletions
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43
exp/audio/audio_js.go
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@ -89,26 +89,33 @@ func (p *player) proceed() error {
p.position = c p.position = c
} }
b := make([]byte, bufferSize) b := make([]byte, bufferSize)
n, err := p.src.Read(b) for 0 < len(b) {
if 0 < n { print(len(b))
const channelNum = 2 n, err := p.src.Read(b)
const bytesPerSample = channelNum * 16 / 8 if 0 < n {
buf := p.context.Call("createBuffer", channelNum, n/bytesPerSample, p.sampleRate) const channelNum = 2
l := buf.Call("getChannelData", 0) const bytesPerSample = channelNum * 16 / 8
r := buf.Call("getChannelData", 1) buf := p.context.Call("createBuffer", channelNum, n/bytesPerSample, p.sampleRate)
il, ir := toLR(b[:n]) l := buf.Call("getChannelData", 0)
const max = 1 << 15 r := buf.Call("getChannelData", 1)
for i := 0; i < len(il); i++ { il, ir := toLR(b[:n])
l.SetIndex(i, float64(il[i])/max) const max = 1 << 15
r.SetIndex(i, float64(ir[i])/max) for i := 0; i < len(il); i++ {
l.SetIndex(i, float64(il[i])/max)
r.SetIndex(i, float64(ir[i])/max)
}
p.bufferSource = p.context.Call("createBufferSource")
p.bufferSource.Set("buffer", buf)
p.bufferSource.Call("connect", p.context.Get("destination"))
p.bufferSource.Call("start", maxF(p.position, c))
p.position += buf.Get("duration").Float()
b = b[n:]
}
if err != nil {
return err
} }
p.bufferSource = p.context.Call("createBufferSource")
p.bufferSource.Set("buffer", buf)
p.bufferSource.Call("connect", p.context.Get("destination"))
p.bufferSource.Call("start", maxF(p.position, c))
p.position += buf.Get("duration").Float()
} }
return err return nil
} }
func (p *player) start() error { func (p *player) start() error {