public static IEnumerable <string> ConvertPDFToImage(PdfReader reader, string diretorioSaida, int quantidadePaginas)
{
PdfReaderContentParser parser = new PdfReaderContentParser(reader);
ImageRenderListener listener = new ImageRenderListener();
List <string> listaDeCaminhos = new List <string>();
try
{
for (int i = 1; i <= quantidadePaginas; i++)
{
parser.ProcessContent(i, listener);
}
for (int i = 0; i < listener.Images.Count; ++i)
{
listaDeCaminhos.Add(ConvertJpgToPng(i, listener, diretorioSaida));
}
return(listaDeCaminhos);
}
finally
{
GC.SuppressFinalize(listener);
GC.SuppressFinalize(parser);
GC.SuppressFinalize(reader);
GC.SuppressFinalize(listaDeCaminhos);
reader.Dispose();
}
}
private static string ConvertJpgToPng(int i, ImageRenderListener listener, string diretorio)
{
System.Drawing.Imaging.EncoderParameters parms = new System.Drawing.Imaging.EncoderParameters(1);
parms.Param[0] = new System.Drawing.Imaging.EncoderParameter(System.Drawing.Imaging.Encoder.Compression, 0);
System.Drawing.Imaging.ImageCodecInfo jpegEncoder = ImageCodecInfo.GetImageEncoders().Single(p => p.CodecName.Contains("PNG"));
System.Drawing.Image img = System.Drawing.Image.FromStream(new MemoryStream(listener.Images[i]));
string path = diretorio + "\\" + i + listener.ImageNames[i].ToLower().Replace(".jpg", ".png");
img.Save(path, jpegEncoder, parms);
return(path);
}
public static string ConvertPDFToImage(PdfReader reader, string diretorioSaida)
{
PdfReaderContentParser parser = new PdfReaderContentParser(reader);
ImageRenderListener listener = new ImageRenderListener();
try
{
parser.ProcessContent(1, listener);
return(ConvertJpgToPng(0, listener, diretorioSaida));
}
finally
{
GC.SuppressFinalize(listener);
GC.SuppressFinalize(parser);
GC.SuppressFinalize(reader);
reader.Dispose();
}
}