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steve@instamation.com
USA
4 Posts |
 Posted - Dec 09 2020 : 06:43:54
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I have an database application that maintains a list of equipment, and I have used Delphi's TIMAGE component to attach images of the selected equipment.
I recently switched to your library to replace TImage with TImageEn where I retrieve a Jpg file and save it to the database as a Jpg blob field, just like I did with TImage, and everything works fine while I am using your components to view/edit my images. Everything works great.
HOWEVER, The problem is that when I attempt to view the saved Jpgs from my database field in anything other than your viewers, I receive 'INVALID IMAGE' errors. I cannot determine why. Does your components save the jpgs in a format that is incompatible with any other jpg viewer? I have been fighting this for two weeks now, and I am almost giving up with ImageEn components, so any help from you would be greatly appreciated.
Regards,
Steve Wagner
Instamation Systems Inc.
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xequte
38182 Posts |
Posted - Dec 09 2020 : 16:27:40
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Hi Steve
ImageEn saves standard JPEG images, so I expect there is another issue at play here. Perhaps the other viewer is expecting the blob to be formatted in a specific way?
Can you save extract the raw data stored in the blobs (old vs ImageEn) to a raw file and send them to me for comparison?
Do other formats work, such as BMP?
Also, please show us the code you are using to store the JPEG?
Nigel
Xequte Software
www.imageen.com
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steve@instamation.com
USA
4 Posts |
Posted - Dec 13 2020 : 08:47:50
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Thank you Nigel for your response.
I notice that the database Image field that works begin with "0xFFD8", and the ones that are created with ImageEn begin with "0x494D4". Why is this?
If the ImageEn Image field is the standard JPEG, shouldnt they begin with "0xFFD8" too?
Steve Wagner
Inatamation Systems Inc. |
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xequte
38182 Posts |
Posted - Dec 13 2020 : 13:51:41
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Hi Steve
Yes, all JPEG images start with 0xFFD8. 0x494D4 looks like it is 'IM...'.
It looks like you are not saving to JPEG. Please show me the code you are using to write to the database stream. Are you passing the format as ioJPEG?
Nigel
Xequte Software
www.imageen.com
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steve@instamation.com
USA
4 Posts |
Posted - Dec 13 2020 : 17:49:43
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Hello Nigel;
You were correct. I was saving the stream using
ImageViewer.IO.SaveToStreamIEN(MyStream). and when I changed it to
ImageViewer.IO.SaveToStreamJpeg(MyStream) everything began working.
Thank you very much for your quick response, and have a wonderful day.
Steve Wagner |
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xequte
38182 Posts |
Posted - Dec 13 2020 : 20:30:13
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Glad to hear we got to the bottom of it 
Nigel
Xequte Software
www.imageen.com
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