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audio: Remove unneeded locks

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This commit is contained in:
Hajime Hoshi 2016-11-29 03:01:52 +09:00
parent b86f1771e4
commit 38af8ce615
1 changed files with 3 additions and 19 deletions
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22
audio/audio.go
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@ -124,19 +124,6 @@ func (p *players) hasPlayer(player *Player) bool {
return ok return ok
} }
func (p *players) seekPlayer(player *Player, offset int64) error {
p.Lock()
defer p.Unlock()
return player.seek(offset)
}
func (p *players) playerCurrent(player *Player, sampleRate int) time.Duration {
p.RLock()
defer p.RUnlock()
sample := player.pos / bytesPerSample / channelNum
return time.Duration(sample) * time.Second / time.Duration(sampleRate)
}
func (p *players) hasSource(src ReadSeekCloser) bool { func (p *players) hasSource(src ReadSeekCloser) bool {
p.RLock() p.RLock()
defer p.RUnlock() defer p.RUnlock()
@ -395,12 +382,8 @@ func (p *Player) Rewind() error {
func (p *Player) Seek(offset time.Duration) error { func (p *Player) Seek(offset time.Duration) error {
o := int64(offset) * bytesPerSample * channelNum * int64(p.sampleRate) / int64(time.Second) o := int64(offset) * bytesPerSample * channelNum * int64(p.sampleRate) / int64(time.Second)
o &= mask o &= mask
return p.players.seekPlayer(p, o)
}
func (p *Player) seek(offset int64) error {
p.buf = []byte{} p.buf = []byte{}
pos, err := p.src.Seek(offset, 0) pos, err := p.src.Seek(o, io.SeekStart)
if err != nil { if err != nil {
return err return err
} }
@ -420,7 +403,8 @@ func (p *Player) Pause() error {
// //
// This function is concurrent-safe. // This function is concurrent-safe.
func (p *Player) Current() time.Duration { func (p *Player) Current() time.Duration {
return p.players.playerCurrent(p, p.sampleRate) sample := p.pos / bytesPerSample / channelNum
return time.Duration(sample) * time.Second / time.Duration(p.sampleRate)
} }
// Volume returns the current volume of this player [0-1]. // Volume returns the current volume of this player [0-1].