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 ImageEn Library for Delphi, C++ and .Net
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 exif properties
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eballinas

Mexico
34 Posts

Posted - Jun 24 2019 :  16:02:56  Show Profile  Reply
I read a database blob field. The exif properties are present.
When I try to save this image to a file, the exif properties are not present...


     fotoprueba:=TIEDBBitmap.Create();
     fotoprueba.ParamsEnabled:=true;
     fotoprueba.DataSource:=extraefotods;
     fotoprueba.ImageBlobField:='foto';
     mifoto:=TImageEnView.Create(self);
     with mifoto do
     begin
          setexternalbitmap(fotoprueba);
          datoscasa:=
          IO.Params.EXIF_GPSLatitude_Str+';'+
          IO.Params.EXIF_GPSLongitude_Str+chr(13)+chr(10)+
          IO.params.EXIF_GPSLatitude.ToString+';'+
          IO.Params.EXIF_GPSLongitude.ToString;
          datospersonales:=cuvsalida+','+nombrebeneficiario+chr(13)+chr(10)+
               etapapedida;
          mifoto.Proc.TextOut(align_text_left,align_text_bottom,
          datoscasa,'Arial', 12, clRed, [fsBold]);
          Proc.TextOut(align_text_right,align_text_bottom,
          datospersonales,'Arial', 12, clRed, [fsBold]);
//	     if not IO.Params.EXIF_HasEXIFData then
 //  	          IO.Params.EXIF_HasEXIFData:=true;
//          IO.Params.EXIF_GPSLatitude:=
//   	          StrToFloat(IO.params.EXIF_GPSLatitude.ToString);
//          IO.Params.EXIF_GPSLongitude:=
//   	          strtofloat(IO.params.EXIF_GPSLatitude.ToString);
     end;
     mifoto.IO.SaveToFileJpeg(cuvsalida+' '+nombrebeneficiario+'.jpg');
     mifoto.IO.InjectJpegEXIF(cuvsalida+' '+nombrebeneficiario+'.jpg');
     mifoto.Free;
     fotoprueba.Free;
    end;

xequte

38203 Posts

Posted - Jun 24 2019 :  22:44:37  Show Profile  Reply
Hi

Firstly, if you are using a TImageEnView do not set of ParamsEnabled = true (let TImageEnView.IO handle the Params, or don't use a TImageEnView at all).

Secondly, you do not need InjectJpegEXIF, as saving to JPEG will always include the EXIF data.


Nigel
Xequte Software
www.imageen.com
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