private static void GenerateImagePreview(int previewsFolderId, Stream docStream)
{
docStream.Seek(0, SeekOrigin.Begin);
var document = Aspose.Imaging.Image.Load(docStream);
if (StartIndex == 0)
{
SetPageCount(1);
}
using (var imgStream = new MemoryStream())
{
var options = new Aspose.Imaging.ImageOptions.PngOptions();
document.Save(imgStream, options);
SavePreviewAndThumbnail(imgStream, 1, previewsFolderId);
}
}
private static void GenerateTiffPreview(int previewsFolderId, Stream docStream)
{
docStream.Seek(0, SeekOrigin.Begin);
var document = (Aspose.Imaging.FileFormats.Tiff.TiffImage)Aspose.Imaging.Image.Load(docStream);
if (StartIndex == 0)
{
SetPageCount(document.Frames.Length);
}
var firstIndex = 0;
var lastIndex = 0;
SetIndexes(StartIndex, document.Frames.Length, out firstIndex, out lastIndex, MaxPreviewCount);
for (var i = firstIndex; i <= lastIndex; i++)
{
//if (!CheckActuality(file))
// break;
try
{
document.ActiveFrame = document.Frames[i];
using (var imgStream = new MemoryStream())
{
var options = new Aspose.Imaging.ImageOptions.PngOptions();
document.Save(imgStream, options);
SavePreviewAndThumbnail(imgStream, i + 1, previewsFolderId);
}
}
catch (Exception ex)
{
Logger.WriteError(ContentId, i + 1, ex: ex, startIndex: StartIndex, version: Version);
SaveEmptyPreview(i + 1, previewsFolderId);
}
}
}
