public ActionResult CreateImgByFolderPathAndDpi(string folderPath, string dpi)
{
int count = 0;
var path = Server.MapPath(Request.ApplicationPath + folderPath);
DirectoryInfo folder = new DirectoryInfo(path);
string fileFullName;
dpi = dpi.ToUpper();
int[] dpiWAndH = dpi.Split('X').Select(o => int.Parse(o)).Where(w => w > 0).ToArray();
foreach (FileInfo file in folder.GetFiles())
{
fileFullName = file.FullName;
if (fileFullName.IndexOf(dpi, StringComparison.Ordinal) == -1)
{
if (dpiWAndH != null && dpiWAndH.Length == 2)
{
if (dpi.StartsWith("-") == false)
{
dpi = string.Concat("-", dpi);
}
if (System.IO.File.Exists(fileFullName))
{
string descPath = fileFullName.Insert(fileFullName.LastIndexOf('.'), dpi);
if (System.IO.File.Exists(descPath) == false)
{
count++;
ThumbnailHelper.GenerateImage2(fileFullName, descPath, dpiWAndH[0], dpiWAndH[1]);
}
}
}
}
}
return Content("生成缩略图总计：" + count);
}
/// <summary>
/// 文件上传到服务器之后执行的操作
/// </summary>
/// <returns></returns>
private void UploadAfterAction(UploadifyResult uploadifyResult)
{
//图片dpi
if (_dpi.IsNotNullAndNotEmpty())
{
List <string> paths = uploadifyResult.uploadPath.Split(_splitChar).ToList();
foreach (var path in paths)
{
string ext = Path.GetExtension(path).ToUpper();
if (ext.EndsWith("JPG") || ext.EndsWith("JPEG") || ext.EndsWith("PNG"))
{
int[] whInt = GetDpi(_dpi);
//生成的缩略图的路径格式是：原图路径 + “-”+ dpi + 后缀
string desPath = path.Insert(path.LastIndexOf('.'), "-" + _dpi);
ThumbnailHelper.GenerateImage2(WebHelper.GetMapPath("~" + path), WebHelper.GetMapPath("~" + desPath), whInt[0], whInt[1]);
}
}
}
//视频dpi
if (_videoCoverDpi.IsNotNullAndNotWhiteSpace())
{
string path = uploadifyResult.uploadPath.Split(_splitChar).First();//正常情况下，视频一次只能传一个
string ext = Path.GetExtension(path).ToUpper();
if (ext.EndsWith("MP4") || ext.EndsWith("MOV"))
{
GenerateVideoCoverImg(path, uploadifyResult);
}
}
}
/// <summary>
///
/// </summary>
/// <param name="originalImagePath"></param>
/// <param name="imagesDpiDetail"></param>
/// <param name="fileType">image/video</param>
public Tuple <int, int> MakeThumbnail(string originalImagePath, ImagesDpiDetail imagesDpiDetail, string fileType = "image")
{
Tuple <int, int> wh = Tuple.Create(0, 0);
if (imagesDpiDetail != null)
{
imagesDpiDetail.SectionItems.ForEach(s =>
{
//生成的缩略图的路径格式是：原图路径 + “-”+ dpi + 后缀
string desPath = originalImagePath.Insert(originalImagePath.LastIndexOf('.'), "-" + (s.dpi ?? imagesDpiDetail.def));
//ThumbnailHelper.GenerateImage(originalImagePath, desPath, s.width, s.height);
if (!System.IO.File.Exists(desPath))
{
wh = ThumbnailHelper.GenerateImage2(originalImagePath, desPath, s.width, s.height, fileType);
}
});
}
return(wh);
}
/// <summary>
/// 生成视频封面
/// </summary>
/// <param name="path">视频的绝对路径：/Upload/File/zzzzz.mp4</param>
/// <param name="uploadifyResult"></param>
public void GenerateVideoCoverImg(string path, UploadifyResult uploadifyResult)
{
#region 生成图片
string videoFullPath = WebHelper.GetMapPath(path);
FFmpegHelper ff = new FFmpegHelper(videoFullPath);
VideoInfo videoInfo = ff.GetVideoInfo();
string saveImgPath = string.Empty;
if (videoInfo.Width < 1)
{
videoInfo.Width = 500;
videoInfo.Height = 330;
}
if (videoInfo.Width > 0)
{
uploadifyResult.videoInfo = JsonConvert.SerializeObject(videoInfo);
int[] whInt = GetDpi(_videoCoverDpi);
string dir = Path.GetDirectoryName(videoFullPath);
string videoFileName = Path.GetFileNameWithoutExtension(videoFullPath);
int index = videoFileName.LastIndexOf(']');
videoFileName = videoFileName.Substring(index + 1);//去掉括号
int duration = 3;
if (uploadifyResult.fileSize < 10485760)
{
duration = 2;
}
saveImgPath = string.Concat(dir, "\\", videoFileName, ".jpg");
ff.GetVideoFirstImage(saveImgPath, videoInfo.Width, videoInfo.Height, duration);
//生成的缩略图的路径格式是：原图路径 + “-”+ dpi + 后缀
if (System.IO.File.Exists(saveImgPath))
{
string desPath = string.Concat(dir, "\\", videoFileName, "-" + _videoCoverDpi, ".jpg");// videoFullPath.Insert(videoFullPath.LastIndexOf('.'), "-" + _videoCoverDpi);
ThumbnailHelper.GenerateImage2(saveImgPath, desPath, whInt[0], whInt[1]);
}
}
#endregion
}
