playlist GUI

cmd/mxl-player/playlist_runtime.go

@@ -3,6 +3,7 @@ package main
 import (
 	"context"
 	"errors"
+	"fmt"
 	"time"
 
 	"mxl-player/internal/playback"
@@ -135,3 +136,41 @@ func shouldAutoStartPlaylist(
 		args.AudioFlowId == "" &&
 		len(playlist.Entries) > 0
 }
+
+func playlistEntryDisplayName(entry playback.PlaylistEntry, index int) string {
+	if entry.Name != "" {
+		return entry.Name
+	}
+	return fmt.Sprintf("Entry %d", index+1)
+}
+
+func playlistTimingProgress(
+	timing playback.PlaylistTimingState,
+	now time.Time,
+) (float32, time.Duration) {
+	if timing.Duration <= 0 {
+		return 0, 0
+	}
+	if timing.Expired {
+		return 1, 0
+	}
+	if !timing.Started {
+		return 0, timing.Duration
+	}
+
+	remaining := timing.Deadline.Sub(now)
+	if remaining < 0 {
+		remaining = 0
+	}
+	if remaining > timing.Duration {
+		remaining = timing.Duration
+	}
+	fraction := 1 - float32(remaining)/float32(timing.Duration)
+	if fraction < 0 {
+		fraction = 0
+	}
+	if fraction > 1 {
+		fraction = 1
+	}
+	return fraction, remaining
+}