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Let SMask/Mask images fallback to the parent image dimensions (issue 19611)

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One of the images have a corrupt SMask, where the /Height-entry is bogus; see the excerpt below (via https://brendandahl.github.io/pdf.js.utils/browser/).
```
SMask (stream) [id: 17, gen: 0]

    ColorSpace = /DeviceGray
    Height = /Length
    Subtype = /Image
    Filter = /FlateDecode
    Type = /XObject
    Width = 157
    Matte (array)
    BitsPerComponent = 8
    Length = 3893
    <view contents> download
```

Hence we enable SMask/Mask images to fallback to the parent image dimensions, and also add more validation of the width/height to get a better error message when that data is wrong.
This commit is contained in:
Jonas Jenwald 2025-03-06 09:57:01 +01:00
parent 1bc98dfbd9
commit 10a99ea0a7
3 changed files with 37 additions and 5 deletions
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1
test/pdfs/issue19611.pdf.link Normal file
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@ -0,0 +1 @@
https://github.com/user-attachments/files/19102190/test.pdf

8
test/test_manifest.json
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@ -3913,6 +3913,14 @@
"rounds": 1,
"type": "eq"
},
{
"id": "issue19611",
"file": "pdfs/issue19611.pdf",
"md5": "169dc6df1c43dcb4659b2ddb6a4b39e4",
"rounds": 1,
"link": true,
"type": "eq"
},
{
"id": "issue1127-text",
"file": "pdfs/issue1127.pdf",