Bug 961566
Summary: | scanimage produces PNM with wrong height in header | ||||||
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Product: | [Fedora] Fedora | Reporter: | amturnip | ||||
Component: | hplip | Assignee: | Tim Waugh <twaugh> | ||||
Status: | CLOSED EOL | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
Severity: | unspecified | Docs Contact: | |||||
Priority: | unspecified | ||||||
Version: | 20 | CC: | jpopelka, nphilipp, twaugh | ||||
Target Milestone: | --- | Keywords: | Reopened | ||||
Target Release: | --- | ||||||
Hardware: | Unspecified | ||||||
OS: | Unspecified | ||||||
Whiteboard: | |||||||
Fixed In Version: | Doc Type: | Bug Fix | |||||
Doc Text: | Story Points: | --- | |||||
Clone Of: | Environment: | ||||||
Last Closed: | 2015-06-29 11:56:58 UTC | Type: | Bug | ||||
Regression: | --- | Mount Type: | --- | ||||
Documentation: | --- | CRM: | |||||
Verified Versions: | Category: | --- | |||||
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
Cloudforms Team: | --- | Target Upstream Version: | |||||
Embargoed: | |||||||
Attachments: |
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I suspect the backend driver (libsane-hpaio) either miscalculating the number of lines in the scan, or alternatively precalculating it and not being able to deliver the complete scan data. Changing component to hplip for examination. This message is a reminder that Fedora 18 is nearing its end of life. Approximately 4 (four) weeks from now Fedora will stop maintaining and issuing updates for Fedora 18. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as WONTFIX if it remains open with a Fedora 'version' of '18'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version prior to Fedora 18's end of life. Thank you for reporting this issue and we are sorry that we may not be able to fix it before Fedora 18 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior to Fedora 18's end of life. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. Fedora 18 changed to end-of-life (EOL) status on 2014-01-14. Fedora 18 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed. I have reproduced the problem with Fedora 20. I scanned a different picture, and again the PNM header promised 1125 rows but the file provided only 880 rows. As a result, ImageMagick's 'identify' program reported "unable to read image data". The incorrect PNM header value, 1125, might assume A4-size paper. The empirically-determined actual image height, 880, sounds like US Letter paper. This message is a reminder that Fedora 20 is nearing its end of life. Approximately 4 (four) weeks from now Fedora will stop maintaining and issuing updates for Fedora 20. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a Fedora 'version' of '20'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora 20 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior this bug is closed as described in the policy above. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. Fedora 20 changed to end-of-life (EOL) status on 2015-06-23. Fedora 20 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed. |
Created attachment 745853 [details] Scanned page with header that overstates image data height Description of problem: scanimage produces pnm files that ImageMagick and gimp cannot read, when scanning from a Hewlett-Packard M1212nf. I have examined the files and found that the header claims more rows than the image actually has. Apparently the image is not missing anything. If I correct the header, then ImageMagick and gimp can read the corrected file. Sample: I put a document about 11 inches high into the scanner and issue this command: $ SANE_DEFAULT_DEVICE="hpaio:/net/HP_LaserJet_Professional_M1212nf_MFP?ip=10.10.159.92" scanimage --source=Flatbed --resolution=75 --format=pnm --mode=Lineart >Putin_glitch.pnm It yields a 69552-byte file [attached] $ stat -c %s Putin_glitch.pnm 69552 with the following header $ head -3 Putin_glitch.pnm P4 # SANE data follows 632 1125 which occupies 32 bytes $ head -3 Putin_glitch.pnm | wc -c 32 leaving an image data size of 69520 bytes. The width, in bytes, of one row of image should be 632/8=79. By mathematics, the image height to match the given file would be 880 rows (11.73 inches @ 75dpi). I cannot explain the extra 0.73 inches but I do not complain about that. Judging by the header, the data size should be 632 wide x 1125 high @ 1 bit = 711000 bits @ 8 per byte = 88875 bytes. Examining the file with ImageMagick's `identify` fails: $ identify Putin_glitch.pnm identify: unable to read image data `Putin_glitch.pnm' @ error/pnm.c/ReadPNMImage/660. Nor can gimp read the file. Now hop into vi and change 1125 to 880; and retry with identify: $ identify Putin_glitch.pnm Putin_glitch.pnm PBM 632x880 632x880+0+0 1-bit Bilevel DirectClass 69.6KB 0.000u 0:00.009 Also, gimp can read the corrected file. Version-Release number of selected component (if applicable): $ rpm -q sane-backends hplip ImageMagick gimp sane-backends-1.0.23-7.fc18.x86_64 hplip-3.13.3-2.fc18.x86_64 ImageMagick-6.7.7.5-3.fc18.x86_64 gimp-2.8.4-1.fc18.x86_64 How reproducible: Consistently. Steps to Reproduce: As above Actual results: Header overstates the image height, and applications cannot read the scanned file Expected results: Scanned file can be read by other tools included in Fedora Additional info: With a previous HP Officejet 6500, scanimage did not exhibit this problem.