/// <summary>
/// 从文件读取MP3FileInfo
/// 文件不存在则返回null
/// </summary>
/// <param name="filepath">文件路径</param>
/// <returns>MP3FileInfo对象</returns>
internal async Task <MP3FileInfo> LoadFromFile(string filepath)
{
if (!File.Exists(filepath) || !filepath.ToLower().EndsWith(".mp3"))
{
return(null);
}
Task <MP3FileInfo> task = new Task <MP3FileInfo>((object fpObj) =>
{
var fp = fpObj.ToString();
var bytes = File.ReadAllBytes(fp);
MP3FileInfo mp3Info = new MP3FileInfo();
mp3Info.FileName = Path.GetFileName(fp);
mp3Info.FilePath = Path.GetFullPath(fp);
mp3Info.HaveID3 = checkID3(bytes);
if (mp3Info.HaveID3)
{
var tags = readFrames(bytes);
foreach (var key in tags.Keys)
{
switch (key)
{
case "TIT2":
mp3Info.Title = readFrameContent(tags[key]);
break;
case "TPE1":
mp3Info.Performer = readFrameContent(tags[key]);
break;
case "TALB":
mp3Info.Album = readFrameContent(tags[key]);
break;
case "TYER":
mp3Info.Year = readFrameContent(tags[key]);
break;
case "APIC":
mp3Info.Picture = readImage(tags[key]);
break;
}
}
}
if (string.IsNullOrEmpty(mp3Info.Album))
{
mp3Info.Album = "未知";
}
if (string.IsNullOrEmpty(mp3Info.Performer))
{
mp3Info.Performer = "未知";
}
return(mp3Info);
}, filepath);
task.Start();
return(await task);
}
private void AddDataToView(MP3FileInfo item)
{
System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(MainForm));
if (item.Picture != null)
{
this.treeView1.ImageList.Images.Add(item.FilePath, item.Picture);
}
else
{
this.treeView1.ImageList.Images.Add(item.FilePath, ((System.Drawing.Icon)(resources.GetObject("$this.Icon"))));
}
this.treeView1.Nodes.Add(new TreeNode(item.FileName)
{
Tag = item,
ImageKey = item.FilePath,
SelectedImageKey = item.FilePath,
StateImageKey = item.FilePath
});
}