public static void Convert()
{
//Copy "x86" and "x64" folders from download package to your .NET project Bin folder.
PdfToImageConverter converter = new PdfToImageConverter();
converter.Load(File.ReadAllBytes("sample.pdf"));
//Default is 72, the higher DPI, the bigger size out image will be
converter.DPI = 96;
//The value need to be 1-100. If set to 100, the converted image will take the
//original quality with less time and memory. If set to 1, the converted image
//will be compressed to minimum size with more time and memory.
//converter.CompressedRatio = 80;
for (int i = 0; i < converter.PageCount; i++)
{
//The converted image will keep the original size of PDF page
Image pageImage = converter.PageToImage(i);
//To specific the converted image size by width and height
//Image pageImage = converter.PageToImage(i, 100, 150);
//You can save this Image object to jpeg, tiff and png format to local file.
//Or you can make it in memory to other use.
pageImage.Save(i.ToString() + ".jpg", ImageFormat.Jpeg);
}
converter.Dispose();
}
public ActionResult UploadPdf()
{
if (Request.Files.Count > 0)
{
var file = Request.Files[0];
if (file != null && file.ContentLength > 0)
{
var fileName = Path.GetFileName(file.FileName);
var path = Path.Combine(Server.MapPath("~/Images/"), fileName);
file.SaveAs(path);
//var fileStream = new FileStream(path,
// FileMode.Open,
// FileAccess.Read
// );
//var fsResult = new FileStreamResult(fileStream, "application/pdf");
//return fsResult;
var converter = new PdfToImageConverter();
var images = converter.Convert(path, fileName, Server.MapPath("~/Images/"), ImageFormat.Bmp);
}
}
return(View());
}
public void TestGetImage()
{
MainController controller = new MainController("testdoc.pdf");
PdfToImageConverter converter = new PdfToImageConverter();
PdfDocument doc = controller.GetDocument();
Image img = converter.PdfToImageByPage(0, doc);
Assert.IsNull(img);
}
public void SaveImage(int pageNum)
{
_ = new HtmlGenericControl("div");
PdfToImageConverter converter = new PdfToImageConverter();
string imgPath = finder.GetImgFilePath(fileFromUI, pageNum);
PdfDocument document = GetDocument();
Image pageImg = converter.PdfToImageByPage(pageNum, document);
pageImg.Save(HostingEnvironment.MapPath(imgPath));
}
public ActionResult GetPdfPageImage(int page)
{
var pdfFilePath = HttpContext.Server.MapPath("~/App_Data/Sample3.PDF");
var pdfToImg = new PdfToImageConverter();
pdfToImg.ScaleTo = 800;
var memStream = new MemoryStream();
pdfToImg.GenerateImage(pdfFilePath, page, ImageFormat.Png, memStream);
return(File(memStream.ToArray(), "image/png"));
}
public static void Convert2()
{
//Copy "x86" and "x64" folders from download package to your .NET project Bin folder.
PdfToImageConverter converter = new PdfToImageConverter();
//Default is 72, the higher DPI, the bigger size out image will be
converter.DPI = 96;
using (Stream stream = File.OpenRead("sample.pdf"))
{
converter.Load(stream);
//Save pdf to multiple pages tiff to local file
converter.DocumentToMultiPageTiff("convert.tiff");
//Or save the multiple pages tiff in memory to other use
//Image multipageTif = converter.DocumentToMultiPageTiff();
}
}
public static Stream ConvertPageToJpg(this PdfPage pdfPage)
{
var converter = new PdfToImageConverter();
return(converter.ConvertToJpgStream(pdfPage));
}
public static IEnumerable <Stream> ConvertToJpgStreams(this PdfDocument pdfDocument)
{
var converter = new PdfToImageConverter();
return(converter.ConvertToJpgStreams(pdfDocument));
}
public static Bitmap ConvertPageToBitmap(this PdfPage pdfPage)
{
var converter = new PdfToImageConverter();
return(converter.ConvertToBitmap(pdfPage));
}
public static IEnumerable <Bitmap> ConvertToBitmaps(this PdfDocument pdfDocument)
{
var converter = new PdfToImageConverter();
return(converter.ConvertToBitmaps(pdfDocument));
}
public async Task <byte[]> getImagePreview(TFile file)
{
try
{
byte[] outPreview = null;
bool topImage = false;
if (file.TipoArchivo.Contains("video"))
{
try {
found:
string nameMD5 = DateTime.Now.Ticks.GetHashCode().ToString("x").ToUpper();
var VideoPath = AppDomain.CurrentDomain.BaseDirectory + @"PreviewFile\Video_" + nameMD5 + "." + file.Nombre.Split('.')[file.Nombre.Split('.').Length - 1];
if (File.Exists(VideoPath))
{
goto found;
}
File.WriteAllBytes(VideoPath, file.ArchivoData);
var imageFile = AppDomain.CurrentDomain.BaseDirectory + @"PreviewFile\VidImage_" + nameMD5 + ".JPG";
var urlFile = Path.GetDirectoryName(Assembly.GetEntryAssembly().Location);
FFmpeg.SetExecutablesPath(urlFile + @"\MediaToolkit", "ffmpeg");
var infoVideo = await FFmpeg.GetMediaInfo(VideoPath);
var conversion = await FFmpeg.Conversions.FromSnippet.Snapshot(VideoPath, imageFile, infoVideo.Duration / 2.0);
await conversion.Start();
outPreview = File.ReadAllBytes(imageFile);
File.Delete(VideoPath);
File.Delete(imageFile);
}
catch (Exception e) {
outPreview = new byte[0];
}
}
else if (file.TipoArchivo.Contains("pdf"))
{
try
{
again:
string nameMD5 = DateTime.Now.Ticks.GetHashCode().ToString("x").ToUpper();
var pdfFile = AppDomain.CurrentDomain.BaseDirectory + @"PreviewFile\DocPdf_" + nameMD5 + ".pdf";
if (File.Exists(pdfFile))
{
goto again;
}
File.WriteAllBytes(pdfFile, file.ArchivoData);
var imageFile = AppDomain.CurrentDomain.BaseDirectory + @"PreviewFile\DocImg_" + nameMD5 + ".JPG";
var pdfToImg = new PdfToImageConverter();
pdfToImg.ScaleTo = 3000; // fit 200x200 box
pdfToImg.GenerateImage(pdfFile, 1, ImageFormat.Jpeg, imageFile);
outPreview = File.ReadAllBytes(imageFile);
File.Delete(pdfFile);
File.Delete(imageFile);
topImage = true;
}
catch (Exception e)
{
outPreview = new byte[0];
}
}
else
{
outPreview = file.ArchivoData;
}
Stream stream = new MemoryStream(outPreview);
Image imageIn = Image.FromStream(stream);
Bitmap bmPhoto = new Bitmap(imageIn);
// recortar imagen
int sourceWidth = bmPhoto.Width;
int sourceHeight = bmPhoto.Height;
int cuadro = 0;
int x = 0, y = 0;
// double div = (minWidth * 1.0 / minHeight * 1.0);
if (sourceWidth > sourceHeight)
{
cuadro = sourceHeight;
x = sourceWidth / 2 - sourceHeight / 2;
}
else
{
cuadro = sourceWidth;
if (topImage)
{
y = 0;
}
else
{
y = sourceHeight / 2 - sourceWidth / 2;
}
}
Rectangle cropArea = new Rectangle(x, y, cuadro, cuadro);
Bitmap bmpCrop = bmPhoto.Clone(cropArea, bmPhoto.PixelFormat);
//cambiar tamaño
Bitmap bmpRsize = resizeImage(bmpCrop);
// cambiar resolucion
bmpRsize.SetResolution(50, 50);
MemoryStream ms = new MemoryStream();
bmpRsize.Save(ms, imageIn.RawFormat);
return(ms.ToArray());
}
catch (Exception ex)
{
return(new byte[0]);
}
}
