/// <summary>
/// 从指定路径提取视频文件缩略图
/// </summary>
/// <param name="sourcePath">视频路径</param>
/// <param name="dstPath">存放图片路径</param>
public void GetThumbnail(string sourcePath, string dstPath = @"./MediaLibraryTemp")
{
try
{
if (dstPath.Equals("./MediaLibraryTemp"))
{
dstPath = MediaThumbnailTempPath;
}
if (!System.IO.Directory.Exists(dstPath))
{
System.IO.Directory.CreateDirectory(dstPath);
}
string[] dsts = System.IO.Directory.GetFiles(dstPath);
for (int i = 0; i < dsts.Length; i++)
{
dsts[i] = dsts[i].Substring(dsts[i].LastIndexOf("\\") + 1);
}
Stack <string> dirs = new Stack <string>(200);
if (!System.IO.Directory.Exists(sourcePath))
{
throw new ArgumentException();
}
dirs.Push(sourcePath);
while (dirs.Count > 0)
{
string currDir = dirs.Pop();
string[] subDirs;
try
{
subDirs = System.IO.Directory.GetDirectories(currDir);
}
catch (System.UnauthorizedAccessException e)
{
Console.WriteLine(e.Message);
continue;
}
catch (System.IO.DirectoryNotFoundException e)
{
Console.WriteLine(e.Message);
continue;
}
string[] files = null;
try
{
files = System.IO.Directory.GetFiles(currDir);
}
catch (System.UnauthorizedAccessException e)
{
Console.WriteLine(e.Message);
continue;
}
catch (System.IO.DirectoryNotFoundException e)
{
Console.WriteLine(e.Message);
continue;
}
foreach (string file in files)
{
try
{
System.IO.FileInfo fi = new System.IO.FileInfo(file);
string videoRegex = "(\\.mp4|\\.mkv|\\.rmvb|\\.mov|\\.flv|\\.avi|\\.mpg|\\.wmv|\\.mpeg)$";
//string audioRegex = "(\\.mp3|\\.wma)$";
string pictureRegex = "(\\.jpg|\\.bmp|\\.png|\\.tiff|\\.tif|\\.gif)$";
Regex r = new Regex(videoRegex, RegexOptions.IgnoreCase);
Regex imageR = new Regex(pictureRegex, RegexOptions.IgnoreCase);
if (r.IsMatch(fi.Extension))
{
VideoItem vi = new VideoItem(file);
if (dsts.Contains(vi.name + vi.fileSize + ".jpg"))
{
// Console.WriteLine(vi);
continue;
}
vi.GetImageFromVedio(dstPath);
//Console.WriteLine(vi);
}
else if (imageR.IsMatch(fi.Extension))
{
ImageItem vi = new ImageItem(file);
if (dsts.Contains(vi.name + vi.fileSize.Trim() + ".jpg"))
{
// Console.WriteLine(vi);
continue;
}
vi.MakeThumbnail(dstPath + "\\" + vi.name + vi.fileSize.Trim() + ".jpg", 80, 80, "HW");
//Console.WriteLine(vi);
}
}
catch (System.IO.FileNotFoundException e)
{
Console.WriteLine(e.Message);
continue;
}
}
foreach (string str in subDirs)
{
dirs.Push(str);
}
}
}
catch (IOException e)
{
Console.WriteLine(e);
}
catch (ArgumentException e)
{
return;
}
}