public ImageInfo Info(Uri uri, int pageNumber = 1)
{
if (uri == null)
{
throw new ArgumentNullException("uri");
}
if (pageNumber < 0)
{
throw new ArgumentOutOfRangeException("pageNumber", "must be a value greater than or equal to 0");
}
var page = pageNumber;
// Default is page 1
if (page == 0)
{
page = 1;
}
// Use a temp file, much faster than calling Load/Info from a URI directly
// In a production service, you might want to create a caching mechanism
string tempFile = Path.GetTempFileName();
try
{
// Force the uri to be fully qualified, reject everything else for security reasons
if (uri.IsFile || uri.IsUnc)
{
throw new ArgumentException("URL cannot be local file or UNC path.");
}
// Download the file
if (File.Exists(HttpContext.Current.Server.MapPath("~/" + uri.LocalPath.ToString())))
{
using (WebClient client = new WebClient())
client.DownloadFile(uri, tempFile);
}
else
{
ImageInfo imginfo = new ImageInfo();
return(imginfo);
//throw new FileNotFoundException("Master set detail does not exists.");
}
using (RasterCodecs codecs = new RasterCodecs())
{
// Initialize the options for RasterCodecs
ServiceHelper.InitCodecs(codecs, 0);
using (CodecsImageInfo info = codecs.GetInformation(tempFile, true, page))
{
ImageInfo imageInfo = new ImageInfo();
imageInfo.Uri = uri.ToString();
imageInfo.FormatId = (int)info.Format;
imageInfo.FormatName = info.Format.ToString();
imageInfo.MimeType = RasterCodecs.GetMimeType(info.Format);
imageInfo.Width = info.Width;
imageInfo.Height = info.Height;
imageInfo.BitsPerPixel = info.BitsPerPixel;
imageInfo.BytesPerLine = info.BytesPerLine;
imageInfo.SizeDisk = info.SizeDisk;
imageInfo.SizeMemory = info.SizeMemory;
imageInfo.Compression = info.Compression;
imageInfo.ViewPerspective = GetViewPerspectiveName(info.ViewPerspective);
imageInfo.Order = info.Order.ToString();
imageInfo.ColorSpace = info.ColorSpace.ToString();
imageInfo.PageNumber = info.PageNumber;
imageInfo.TotalPages = info.TotalPages;
imageInfo.HasResolution = info.HasResolution;
imageInfo.XResolution = info.XResolution;
imageInfo.YResolution = info.YResolution;
imageInfo.IsRotated = info.IsRotated;
imageInfo.IsSigned = info.IsSigned;
imageInfo.HasAlpha = info.HasAlpha;
imageInfo.BrowserCompatible = false;
switch (info.Format)
{
case RasterImageFormat.Png:
case RasterImageFormat.Gif:
case RasterImageFormat.Jpeg:
case RasterImageFormat.Jpeg411:
case RasterImageFormat.Jpeg422:
case RasterImageFormat.JpegLab:
case RasterImageFormat.JpegLab411:
case RasterImageFormat.JpegLab422:
case RasterImageFormat.JpegRgb:
imageInfo.BrowserCompatible = true;
break;
default:
break;
}
return(imageInfo);
}
}
}
catch (Exception ex)
{
Log(string.Format("Info - Error:{1}{0}TempFile:{2}{0}Uri:{3}, PageNumber:{4}", Environment.NewLine, ex.Message, tempFile, uri, page));
throw;
}
finally
{
if (File.Exists(tempFile))
{
try
{
File.Delete(tempFile);
}
catch { }
}
}
}
