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audio/mp3: Flexible timeout

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This commit is contained in:
Hajime Hoshi 2017-12-27 19:18:02 +09:00
parent e2a026138a
commit a98b03f738
1 changed files with 8 additions and 3 deletions
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11
audio/mp3/decode_js.go
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@ -21,6 +21,7 @@ import (
"fmt"
"io"
"io/ioutil"
"math"
"time"
"github.com/gopherjs/gopherjs/js"
@ -129,8 +130,9 @@ func Decode(context *audio.Context, src audio.ReadSeekCloser) (*Stream, error) {
return nil, err
}
var s *Stream
try := 0
for {
s, err = decode(context, b)
s, err = decode(context, b, try)
switch err {
case errTryAgain:
buf, ok := seekNextFrame(b)
@ -140,6 +142,7 @@ func Decode(context *audio.Context, src audio.ReadSeekCloser) (*Stream, error) {
b = buf
continue
case errTimeout:
try++
continue
default:
if err != nil {
@ -164,7 +167,7 @@ func init() {
}
}
func decode(context *audio.Context, buf []byte) (*Stream, error) {
func decode(context *audio.Context, buf []byte, try int) (*Stream, error) {
if offlineAudioContextClass == nil {
return nil, errors.New("audio/mp3: OfflineAudioContext is not available")
}
@ -200,12 +203,14 @@ func decode(context *audio.Context, buf []byte) (*Stream, error) {
}
})
timeout := time.Duration(math.Pow(2, float64(try))) * time.Second
select {
case err := <-ch:
if err != nil {
return nil, err
}
case <-time.After(3 * time.Second):
case <-time.After(timeout):
// Sometimes decode fails without calling the callbacks (#464).
// Let's just try again in this case.
return nil, errTimeout