BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Valid JPEG image          BorlandTalk.com Forum Index -> Delphi Graphics View previous topic :: View next topic   Author Message Tim Guest Posted: Thu Jul 06, 2006 7:49 pm    Post subject: Valid JPEG image I have a program which includes adding images to certain records using the TOpenPictureDialog box. However, a client has has a problem and when I have tried to import his image with the program running from the IDE, I get an error message 'project raised exception class EJPEG with message 'JPEG error #53'. Process stopped.' simply by highlighting the file in theOpenPictureDialog box. I have then tried to open the image in Paint Shop Pro and got a 'This is not a valid JPEG-JFIF file' error. However, the file opens OK in IrfanView and in Internet Explorer. Apparently this image came straight out of his camera. The problem is that I don't know enough about image formats to know where the error lies. Can anyone suggest how I might tackle this? Thanks. Back to top David J Taylor Guest Posted: Thu Jul 06, 2006 8:22 pm    Post subject: Re: Valid JPEG image Tim wrote: [] Quote: However, a client has has a problem and when I have tried to import his image with the program running from the IDE, I get an error message 'project raised exception class EJPEG with message 'JPEG error #53'. Process stopped.' simply by highlighting the file in theOpenPictureDialog box. [] Thanks. See: http://homepages.borland.com/efg2lab/Library/Delphi/Graphics/JpegErrors.txt It may tell you what the error means, although quite how to find where it's happening may be another issue althogether. David Back to top Finn Tolderlund Guest Posted: Thu Jul 06, 2006 8:48 pm    Post subject: Re: Valid JPEG image "Tim" <tim (AT) evolvedatasystems (DOT) co.uk> skrev i en meddelelse news:44ad2289 (AT) newsgroups (DOT) borland.com... Quote: I have then tried to open the image in Paint Shop Pro and got a 'This is not a valid JPEG-JFIF file' error. However, the file opens OK in IrfanView and in Internet Explorer. That might indicate that the jpeg is corrupt in some way. Can you put it in b.p.attachments for us to see? -- Finn Tolderlund http://www.tolderlund.eu/delphi/ Back to top Warrick Wilson Guest Posted: Thu Jul 06, 2006 10:32 pm    Post subject: Re: Valid JPEG image "Tim" <tim (AT) evolvedatasystems (DOT) co.uk> wrote in message news:44ad2289 (AT) newsgroups (DOT) borland.com... Quote: I have a program which includes adding images to certain records using the TOpenPictureDialog box. However, a client has has a problem and when I have tried to import his image with the program running from the IDE, I get an error message 'project raised exception class EJPEG with message 'JPEG error #53'. Process stopped.' simply by highlighting the file in theOpenPictureDialog box. I have then tried to open the image in Paint Shop Pro and got a 'This is not a valid JPEG-JFIF file' error. However, the file opens OK in IrfanView and in Internet Explorer. Apparently this image came straight out of his camera. The problem is that I don't know enough about image formats to know where the error lies. Can anyone suggest how I might tackle this? Thanks. When you open the image in Irfanview, have you looked at the properties/image information about it? We had a problem once where we had a CMYK-encoded JPEG, and the native jpeg.pas unit doesn't handle that. There's a revised jpeg.pas unit on the CodeCentral site that _does_ work, and I needed that to work with the CMYK JPEG. Our source wasn't a camera, though. Does it only happen with images from his camera? Does it happen with all images from his camera? If not, sound like you have a bad JPEG that some programs can cope with better than others. If all images from his camera are problematic, then try and figure out what the image properties are and see whether your JPEG handling components/code are capable of that format. Back to top Tim Guest Posted: Fri Jul 07, 2006 9:26 pm    Post subject: Re: Valid JPEG image Thanks for the comments. Without going to the site to see for myself where the images come from, I am going to assume that the problem images did not come his camera since someone else has taken some photos and they load fine. I will, however, look at the revised jpeg.pas unit and see if that works. However, if I can be sure that it was an image from a one off source and was corrupt in some way, then I will leave it at that. Tim Back to top Mikael Stalvik Guest Posted: Sat Jul 08, 2006 1:50 pm    Post subject: Re: Valid JPEG image Quote: I will, however, look at the revised jpeg.pas unit and see if that works. However, if I can be sure that it was an image from a one off source and was corrupt in some way, then I will leave it at that. Can any one share the link to this updated version of jpeg.pas? I found one related (?) file at CodeCentral, "19723_enhanced_jpeg_implementation.ZIP", but it only contained .dcu files, no .pas files :| Is this the correct one to use? Thanks, Mikael Back to top Tim Guest Posted: Mon Jul 10, 2006 3:02 pm    Post subject: Re: Valid JPEG image Mikael, If you look in the zip file, there is a test.exe. I have just tried using it to load the image that was causing me a problem and it comes up with an error, so assuming that you were interested in it for the same reason as me, then don't bother! Tim "Mikael Stalvik" <mikael@helium-music-manager.com> wrote in message news:44af71c9$1 (AT) newsgroups (DOT) borland.com... Quote: I will, however, look at the revised jpeg.pas unit and see if that works. However, if I can be sure that it was an image from a one off source and was corrupt in some way, then I will leave it at that. Can any one share the link to this updated version of jpeg.pas? I found one related (?) file at CodeCentral, "19723_enhanced_jpeg_implementation.ZIP", but it only contained .dcu files, no .pas files :| Is this the correct one to use? Thanks, Mikael Back to top Mikael Stalvik Guest Posted: Mon Jul 10, 2006 6:41 pm    Post subject: Re: Valid JPEG image Thanks for the tip Tim. Strange though, the test application works fine for me :) Regards, Mikael Quote: If you look in the zip file, there is a test.exe. I have just tried using it to load the image that was causing me a problem and it comes up with an error, so assuming that you were interested in it for the same reason as me, then don't bother! 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