Image Converter DLL

 Image Converter DLL v.1.2

Image Converter DLL


Image Converter DLL

Image Converter DLL v.1.2

This DLL file contain a function that allows you to convert, resize and rotate images. Needs no installation and no registration in the system registry.
 
INPUT IMAGE FORMATS
OUTPUT IMAGE FORMATS
Bitmaps: BMP, DIB, RLE
CompuServe GIF: GIF
JPEGs: JPG, JPEG, JPE, JFIF, JIF
JPEG2000: JP2, J2C, J2K, JPC
Photodhop: PSD
Portable Bitmaps: PBM, PGM, PPM, PXM
Portable Network Graphics: PNG
Targa: TGA, VDA, ICB, VST
TIFFs: TIF, TIFF, FAX, G3N, G3F
Windows Cursor: CUR
Windows Enhanced Metafile: EMF
Windows Icon: ICO
Windows Metafile: WMF
Wireless Bitmap: WBMP
ZSoft Paintbrush: PCX, DCX
Adobe Acrobat: PDF
Bitmaps: BMP
CompuServe GIF: GIF
JPEGs: JPG
JPEG2000: JP2, J2K
Portable Bitmaps: PXM
Portable Network Graphics: PNG
Targa: TGA
TIFFs: TIF
Windows Icon: ICO
Wireless Bitmap: WBMP
ZSoft Paintbrush: PCX, DCX
SYNTAX:
DLL file contains a single function:

 

ConvertImage(FN1: PCHAR; FN2:PCHAR; NewWidth:integer; NewHeight:integer; Rotation:integer; Photometry:integer; Compression:integer; Page:integer);

FN1 - source filename with full path;
FN2 - destination filename with full path;
NewWidth, NewHeight - new image dimensions for resizing. To skip resizing set both parameters to 0. To resize maintaining aspect ratio: parameter NewWidth must be set to the longest side of the new image (width or height), and the parameter NewHeight should be set to 0.
Rotation: 0-skip rotation; 1-rotate left; 2-rotate right; 3-rotate 180 degrees; 4-automatic rotation according to EXIF_orientation tag (for JPEG or TIFF only). After rotation is finished, the value of EXIF_orientation tag (if it exists) will be reset to 0.
Photometry, Compression - these options are effective, if destination format is JPEG, JPEG2000 or TIFF.
Page - this option is effective, if multipage TIFF file is specified as source file. It can be used to specify the page to be converted. If Page=0 then all pages of multipage TIFF will be converted to set of files. For multipage TIFF files a string "-page-X" will be added to output filenames automatically. Say, when converting a multipage TIFF file "test.tiff" to "test.jpg" a set of files "test-page-1.jpg", "test-page-2.jpg" etc... will be created.


EXAMPLES:

Invoke from VB

Public Class Form1

    Private Declare Function Conv Lib "ImageConverter.dll" Alias "ConvertImage" (ByVal FN1 As String, ByVal FN2 As String, ByVal NewW As Integer, ByVal NewH As Integer, ByVal Rotate As Integer, ByVal ph As Integer, ByVal comp As Integer, ByVal pg As Integer) As Integer

    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

        Conv("e:\1.jpg", "e:\1.bmp", 0, 0, 0, 1, 50, 0)

    End Sub
End Class

Invoke from C++

typedef void _stdcall (*_Convert)(char *Src, char *Dst, int NWidth, int NHeight, int Rotate, int Ph, int Compr, int Pg);

void __fastcall TForm1::Button1Click(TObject *Sender)
{
       _Convert        pConvert = NULL;

       HINSTANCE hLib = LoadLibrary("ImageConverter.dll");
   
       pConvert = (_Convert)GetProcAddress(hLib, "ConvertImage");
       pConvert((PCHAR)L"e:\\1.jpg", (PCHAR)L"e:\\1.bmp", 0, 0, 0, 1, 50, 0);

}

Invoke from Delphi

procedure TForm1.Button2Click(Sender: TObject);
var
  DLLInstance : THandle;
  ImgCnv      :TImgCnv;
begin
     DLLInstance := LoadLibrary('ImageConverter.dll');
     @ImgCnv := GetProcAddress(DLLInstance, 'ConvertImage');
     if Assigned(ImgCnv) then begin
        ImgCnv(PChar('d:\1.bmp'),PChar('d:\1.jpg'), 0, 0, 0, 1, 50, 0);
     end;
     FreeLibrary(DLLInstance);
end;

end.

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