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| ID | Category | Severity | Reproducibility | Date Submitted | Last Update | |||||||
| 0006564 | [JEDI VCL] 00 JVCL Components | major | always | 2017-04-09 11:42 | 2018-07-26 11:07 | |||||||
| Reporter | sender | View Status | public | |||||||||
| Assigned To | ||||||||||||
| Priority | normal | Resolution | open | |||||||||
| Status | acknowledged | Product Version | Daily / GIT | |||||||||
| Summary | 0006564: JvDBImage shows "Bitmap image is not valid" to some kind of jpeg image. | |||||||||||
| Description | Some kind of jpeg image does not has the "JFIF" or "Exif" signature at stream offset 6 as procedure GraphicSignaturesNeeded expected. | |||||||||||
| Additional Information |
Simple workaround is to add: RegisterGraphicSignature([$FF, $D8], 0 , TJPEGImage); to procedure GraphicSignaturesNeeded; But I think we should add file ending signature examination since a valid jpeg file is always ended with 0xFF, 0xD9. (According to https://en.wikipedia.org/wiki/JPEG) [^] |
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| Tags | No tags attached. | |||||||||||
| Attached Files |
 file header.png [^] (42,399 bytes) 2017-04-09 11:42 header.jpg [^] (28,773 bytes) 2017-07-10 02:57 JvDBImageInvalidImage.7z [^] (129,355 bytes) 2018-07-25 05:58 |
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Notes |
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(0021429) mh (reporter) 2017-07-02 08:44 |
1. can this particular JPEG file provided for further analysis? 2. what do other image processing applications say when you try to load this image in them? |
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(0021432) sender (reporter) 2017-07-10 03:02 |
I have uploaded the jpeg file, please check the attached file "header.jpg". I have tried lots of graphic processing applications, including IrfanView, Paint.net, GIMP, Corel PaintShop pro, Adobe Photoshop. They all can open this file without problem. |
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(0021526) obones (administrator) 2018-07-18 15:55 |
Could you check if the issue is still present in the latest GIT content? If yes, please provide the zipped sources of an application showing this. |
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(0021567) sender (reporter) 2018-07-25 06:07 |
The problem is still there. I have uploaded demo source package which contains 2 demo programs. The one which includes my patched JvJVCLUtils.pas can show the jpeg file in mdb. The unpatched one will show "Unsupported stream format". To use the demo program, just compile and run, then pressed the "open db" button. |
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Issue History |
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| Date Modified | Username | Field | Change |
| 2017-04-09 11:42 | sender | New Issue | |
| 2017-04-09 11:42 | sender | File Added: file header.png | |
| 2017-07-02 08:44 | mh | Note Added: 0021429 | |
| 2017-07-10 02:57 | sender | File Added: header.jpg | |
| 2017-07-10 03:02 | sender | Note Added: 0021432 | |
| 2018-07-18 15:55 | obones | Note Added: 0021526 | |
| 2018-07-18 15:55 | obones | Status | new => feedback |
| 2018-07-25 05:58 | sender | File Added: JvDBImageInvalidImage.7z | |
| 2018-07-25 06:07 | sender | Note Added: 0021567 | |
| 2018-07-26 11:07 | obones | Status | feedback => acknowledged |
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