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audio: Try supporting Safari (WIP)

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This commit is contained in:
Hajime Hoshi 2016-04-21 23:57:15 +09:00
parent c8b9226b59
commit a14aa6779e
1 changed files with 10 additions and 1 deletions
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11
audio/vorbis/decode_js.go
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@ -17,6 +17,7 @@
package vorbis
import (
"errors"
"io"
"io/ioutil"
@ -87,8 +88,16 @@ func Decode(context *audio.Context, src audio.ReadSeekCloser) (*Stream, error) {
s := &Stream{}
ch := make(chan struct{})
klass := js.Global.Get("OfflineAudioContext")
if klass == js.Undefined {
klass = js.Global.Get("webkitOfflineAudioContext")
}
if klass == js.Undefined {
return nil, errors.New("vorbis: OfflineAudioContext is not available")
}
// TODO: 1 is a correct second argument?
oc := js.Global.Get("OfflineAudioContext").New(2, 1, context.SampleRate())
// At least, 1 works on Chrome and Firefox but not Safari.
oc := klass.New(2, 1, context.SampleRate())
oc.Call("decodeAudioData", js.NewArrayBuffer(b), func(buf *js.Object) {
s.leftData = buf.Call("getChannelData", 0).Interface().([]float32)
s.rightData = buf.Call("getChannelData", 1).Interface().([]float32)