/// <summary>
/// 获取MP3的Tag信息
/// </summary>
private void GetMP3Tag()
{
DateTime dt1 = DateTime.Now;
this.isGetMP3TagEnd = false;
string fullName = "";//文件全名
MP3FileData mp3File = new MP3FileData();
MP3TagData mp3Tag = new MP3TagData();
bool isQueueEmpty = false;
while (true)
{
//如果用户执行了停止索引，结束。
if (this.isStopIndexMP3 == true)
break;
lock (this.mp3FileQueue)
{
if (this.mp3FileQueue.Count > 0)
{
isQueueEmpty = false;
mp3File = this.mp3FileQueue.Dequeue();
}
else
{
isQueueEmpty = true;
}
}
if (isQueueEmpty == false)
{
//文件信息
mp3Tag.name = mp3File.name;
mp3Tag.length = mp3File.length;
mp3Tag.directory = mp3File.directory;
mp3Tag.lastWriteTime = mp3File.lastWriteTime;
fullName = mp3Tag.directory + mp3Tag.name;
//读取MP3文件的最后128个字节的内容
try
{
using (FileStream fs = new FileStream(fullName, FileMode.Open, FileAccess.Read))
{
fs.Seek(-128, SeekOrigin.End);
fs.Read(tagBody, 0, 128);
fs.Close();
}
}
catch
{
continue;
}
//取TAG段的前三个字节
tagFlag = Encoding.Default.GetString(tagBody, 0, 3);
//如果没有TAG信息，则置为null
if (!"TAG".Equals(tagFlag, StringComparison.InvariantCultureIgnoreCase))
{
mp3Tag.album = "";
mp3Tag.artist = "";
mp3Tag.genre = "";
mp3Tag.pubYear = "";
mp3Tag.songName = "";
}
else
{
//按照MP3 ID3 V1 的tag定义，依次读取相关的信息
mp3Tag.songName = Encoding.Default.GetString(tagBody, 3, 30);
mp3Tag.songName = (mp3Tag.songName.Trim()).Trim('\0');
mp3Tag.artist = Encoding.Default.GetString(tagBody, 33, 30);
mp3Tag.artist = (mp3Tag.artist.Trim()).Trim('\0');
mp3Tag.album = Encoding.Default.GetString(tagBody, 62, 30);
mp3Tag.album = (mp3Tag.album.Trim()).Trim('\0');
mp3Tag.pubYear = Encoding.Default.GetString(tagBody, 93, 4);
mp3Tag.pubYear = (mp3Tag.pubYear.Trim()).Trim('\0');
Int16 g = (Int16)tagBody[127];
mp3Tag.genre = g >= this.GENRE.Length ? "" : this.GENRE[g];
}
lock (this.mp3TagQueue)
{
this.mp3TagQueue.Enqueue(mp3Tag);
}
}
else if (this.isScanMP3End == false)
{
//Console.WriteLine("mp3FileQueue 空");
Thread.Sleep(0);//让出时间片给其他线程
continue;
}
else
{
break;
}
}
this.isGetMP3TagEnd = true;//获取MP3Tag结束
double d = (DateTime.Now - dt1).TotalSeconds;
//Console.Out.WriteLine("GetMP3TagEnd" + d);
}
/// <summary>
/// 获取MP3文件
/// </summary>
private void GetMP3File()
{
DateTime dt1 = DateTime.Now;
FileDirectoryFinder finder = new FileDirectoryFinder();
this.isScanMP3End = false;
MP3FileData mp3File = new MP3FileData();
bool isQueueEmpty = false;
while (true)
{
//如果用户执行了停止索引，结束。
if (this.isStopIndexMP3 == true)
break;
lock (this.mp3DirectoryStack)
{
if (this.mp3DirectoryStack.Count > 0)
{
isQueueEmpty = false;
finder.SearchPath = this.mp3DirectoryStack.Pop();
finder.Reset();
}
else
{
isQueueEmpty = true;
}
}
if (isQueueEmpty == false)
{
while (finder.MoveNext())
{
//当前对象为目录
if (finder.IsFile == true)
{
//不是mp3文件，继续。
if (finder.CurrentFileData.name.ToLower().EndsWith(".mp3") == false)
{
continue;
}
lock (this.mp3FileQueue)
{
mp3File.name = finder.CurrentFileData.name;
mp3File.directory = finder.CurrentFileData.directory;
mp3File.length = Deal.ToLong(finder.CurrentFileData.nFileSizeHigh,
finder.CurrentFileData.nFileSizeLow).ToString();
mp3File.lastWriteTime = Deal.ToDateTimeString(
finder.CurrentFileData.ftLastWriteTime_dwHighDateTime,
finder.CurrentFileData.ftLastWriteTime_dwLowDateTime);
lock (this.mp3FileQueue)
{
this.mp3FileQueue.Enqueue(mp3File);
}
this.mp3FileCounter++;
}
}
else
{
lock (this.mp3DirectoryStack)
{
this.mp3DirectoryStack.Push(finder.FullName);
}
this.mp3FolderCounter++;
}
}
}
else
{
break;
}
}
double d = (DateTime.Now - dt1).TotalSeconds;
//Console.Out.WriteLine("GetMP3File" + d);
this.isScanMP3End = true;
}
