96 lines
2.8 KiB
C#
96 lines
2.8 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows;
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using System.Windows.Media;
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namespace Wpf_AiSportsMicrospace.Common
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{
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public static class Utils
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{
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public static MediaPlayer _bgPlayer;
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public static void PlayBackgroundMusic(string musicFileName, bool loop)
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{
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string projectRoot = Path.Combine(AppContext.BaseDirectory, @"..\..\..");
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string musicPath = Path.Combine(projectRoot, "Resources", "Music", musicFileName);
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if (_bgPlayer == null)
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{
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_bgPlayer = new MediaPlayer();
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_bgPlayer.Volume = 0.5;
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_bgPlayer.MediaOpened += BgPlayer_MediaOpened;
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}
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else
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{
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_bgPlayer.Stop();
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}
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_bgPlayer.Open(new Uri(musicPath, UriKind.Absolute));
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_bgPlayer.Play();
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if (loop)
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{
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_bgPlayer.MediaEnded -= BgPlayer_MediaEnded;
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_bgPlayer.MediaEnded += BgPlayer_MediaEnded;
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}
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else
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{
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_bgPlayer.MediaEnded -= BgPlayer_MediaEnded;
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}
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}
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// 当音乐加载完毕时触发
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private static void BgPlayer_MediaOpened(object sender, EventArgs e)
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{
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var player = sender as MediaPlayer;
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if (player != null && player.NaturalDuration.HasTimeSpan)
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{
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TimeSpan duration = player.NaturalDuration.TimeSpan;
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Console.WriteLine($"音乐总时长: {duration.TotalSeconds:F2} 秒");
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}
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}
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private static void BgPlayer_MediaEnded(object sender, EventArgs e)
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{
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_bgPlayer.Position = TimeSpan.Zero;
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_bgPlayer.Play();
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}
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public static void StopBackgroundMusic()
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{
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if (_bgPlayer != null)
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{
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_bgPlayer.Stop();
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}
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}
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// 安全获取当前播放时间（秒）
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public static double GetMusicCurrentTime()
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{
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double currentTime = 0;
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Application.Current.Dispatcher.Invoke(() =>
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{
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if (_bgPlayer != null)
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currentTime = _bgPlayer.Position.TotalSeconds;
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});
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return currentTime;
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}
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// 安全获取总时长（秒）
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public static int GetMusicTotalDuration()
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{
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int total = 0;
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Application.Current.Dispatcher.Invoke(() =>
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{
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if (_bgPlayer != null && _bgPlayer.NaturalDuration.HasTimeSpan)
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total = (int)_bgPlayer.NaturalDuration.TimeSpan.TotalSeconds;
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});
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return total;
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}
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}
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}
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