Dmitry Sergeev
82 lines
1.3 KiB
Go
82 lines
1.3 KiB
Go
package playback
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import (
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"context"
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"fmt"
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"time"
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)
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type Unit uint8
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const (
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UnitVideo Unit = iota
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UnitAudio
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UnitSync
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)
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type State uint8
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const (
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StateIdle State = iota
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StateConnecting
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StatePlaying
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StateReconnecting
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StateFailed
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StateStopping
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)
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type Status struct {
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Unit Unit
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State State
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Generation uint64
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Attempt int
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FailedAttempts int
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RetryIn time.Duration
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Err error
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}
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type StatusObserver func(Status)
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type generationContextKey struct{}
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func withGeneration(ctx context.Context, generation uint64) context.Context {
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return context.WithValue(ctx, generationContextKey{}, generation)
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}
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func generationFromContext(ctx context.Context) uint64 {
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generation, _ := ctx.Value(generationContextKey{}).(uint64)
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return generation
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}
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func (u Unit) String() string {
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switch u {
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case UnitVideo:
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return "video"
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case UnitAudio:
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return "audio"
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case UnitSync:
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return "sync"
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default:
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return fmt.Sprintf("Unit(%d)", uint8(u))
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}
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}
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func (s State) String() string {
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switch s {
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case StateIdle:
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return "idle"
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case StateConnecting:
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return "connecting"
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case StatePlaying:
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return "playing"
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case StateReconnecting:
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return "reconnecting"
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case StateFailed:
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return "failed"
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case StateStopping:
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return "stopping"
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default:
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return fmt.Sprintf("State(%d)", uint8(s))
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}
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}
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