internal static byte[] ConvertPageToGrayscaleImageIncludeAnnotations(IDocLib library, string path, int pageIndex)
{
using (var docReader = library.GetDocReader(path, new PageDimensions(1080, 1920)))
{
using (var pageReader = docReader.GetPageReader(pageIndex))
{
var bytes = GetModifiedImage(pageReader);
return(bytes);
}
}
}
internal static byte[] ConvertPageToSimpleImageWithLetterOutlinesUsingScaling(IDocLib library, string path, int pageIndex)
{
using (var docReader = library.GetDocReader(path, new PageDimensions(1.337)))
{
using (var pageReader = docReader.GetPageReader(pageIndex))
{
var bytes = GetModifiedImage(pageReader);
return(bytes);
}
}
}
internal static byte[] ConvertPageToSimpleImageWithoutTransparency(IDocLib library, string path, int pageIndex)
{
using (var docReader = library.GetDocReader(path, new PageDimensions(1080, 1920)))
{
using (var pageReader = docReader.GetPageReader(pageIndex))
{
var bytes = GetModifiedImage(pageReader);
return(bytes);
}
}
}
public MemoryStream PdfToImage(Stream filepdf)
{
var pdfBytes = ReadToEnd(filepdf);
MemoryStream memoryStream = new MemoryStream();
MagickImage imgBackdrop;
MagickColor backdropColor = MagickColors.White; // replace transparent pixels with this color
int pdfPageNum = 0; // first page is 0
using (IDocLib pdfLibrary = DocLib.Instance)
{
// Console.WriteLine("pdfBytes");
//Console.WriteLine(pdfBytes.Length);
using (var docReader = pdfLibrary.GetDocReader(pdfBytes, new PageDimensions(1.0d)))
{
using (var pageReader = docReader.GetPageReader(pdfPageNum))
{
var rawBytes = pageReader.GetImage();
rawBytes = RearrangeBytesToRGBA(rawBytes);
var width = pageReader.GetPageWidth();
var height = pageReader.GetPageHeight();
PixelReadSettings pixelReadSettings = new PixelReadSettings(width, height, StorageType.Char, PixelMapping.RGBA);
using (MagickImage imgPdfOverlay = new MagickImage(rawBytes, pixelReadSettings))
{
imgBackdrop = new MagickImage(backdropColor, width, height);
imgBackdrop.Composite(imgPdfOverlay, CompositeOperator.Over);
}
}
}
}
imgBackdrop.Write(memoryStream, MagickFormat.Png);
imgBackdrop.Dispose();
memoryStream.Position = 0;
return(memoryStream);
}
void StartReading()
{
var searchOptions = Options;
Results.Clear();
StatusName = _infoService.GetSearchStatus(SearchStatus.Initializing);
ItemsReady = false;
Stats.IsReady = false;
Stats.FilesAnalyzed = "0/0";
Stats.PagesAnalyzed = 0;
Stats.ExecutionTime = "...";
var fileCounter = 0;
var watch = System.Diagnostics.Stopwatch.StartNew();
if (!string.IsNullOrWhiteSpace(searchOptions.Keyword))
{
List <string> discoveredFiles = searchOptions.UseSubfolders ? Directory.GetFiles(searchOptions.Path, "*.pdf", SearchOption.AllDirectories).ToList()
: Directory.GetFiles(searchOptions.Path, "*.pdf").ToList();
if (discoveredFiles == null)
{
System.Diagnostics.Debug.WriteLine("No files found... ");
return;
}
StatusName = _infoService.GetSearchStatus(SearchStatus.Running);
ResultInfo = _infoService.GetSearchInfo(SearchInfo.Init);
Stats.FilesAnalyzed = "0/" + discoveredFiles.Count.ToString();
foreach (var pdf in discoveredFiles)
{
System.Diagnostics.Debug.WriteLine("Checking " + pdf);
using var docReader = _docLib.GetDocReader(pdf, _optionService.TranslatePrecision(searchOptions.SelectedPrecisionOCR).Item1);
for (var i = 0; i < docReader.GetPageCount(); i++)
{
using var pageReader = docReader.GetPageReader(i);
var parsedText = pageReader.GetText().ToString();
if (searchOptions.UseOCR && string.IsNullOrWhiteSpace(parsedText))
{
var rawBytes = pageReader.GetImage(_optionService.TranslatePrecision(searchOptions.SelectedPrecisionOCR).Item2);
var width = pageReader.GetPageWidth();
var height = pageReader.GetPageHeight();
using var bmp = new Bitmap(width, height, _optionService.TranslatePrecision(searchOptions.SelectedPrecisionOCR).Item3);
AddBytes(bmp, rawBytes);
using var stream = new MemoryStream();
bmp.Save(stream, _optionService.TranslatePrecision(searchOptions.SelectedPrecisionOCR).Item4);
parsedText = ImageToText(stream.ToArray(), searchOptions.SelectedLanguageOCR, searchOptions.SelectedPrecisionOCR);
}
SearchPage(parsedText, searchOptions.Keyword, pdf, i, searchOptions.CaseSensitive);
Stats.PagesAnalyzed += 1;
}
fileCounter += 1;
Stats.FilesAnalyzed = fileCounter.ToString() + "/" + discoveredFiles.Count.ToString();
}
}
watch.Stop();
var elapsedMs = watch.ElapsedMilliseconds;
System.Diagnostics.Debug.WriteLine("Total execution " + elapsedMs);
Stats.ExecutionTime = (elapsedMs / 1000.0).ToString() + " " + _infoService.GetSecondsString();
Stats.IsReady = true;
StatusName = _infoService.GetSearchStatus(SearchStatus.Ready);
if (!Results.Any())
{
ResultInfo = _infoService.GetSearchInfo(SearchInfo.NoResults);
ItemsReady = false;
}
}