Compression error found in PNG file

This topic has 4 replies, 2 voices, and was last updated 9 years, 9 months ago by Pavel Poles.

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Posts
July 10, 2015 at 4:27 pm #53613

Support
Keymaster

Hello! Thank you for images, I will research this issue soon.

July 12, 2015 at 3:14 pm #53648

Support
Keymaster

Hello again! Could you make a demo-app with the error, please? (I can't repeat the error in my test-app)

What version of Delphi do you uses?

July 14, 2015 at 2:15 pm #53659

Pavel Poles
Participant

'Support' wrote:

Hello again! Could you make a demo-app with the error, please? (I can't repeat the error in my test-app)

What version of Delphi do you uses?

Hi,

you are right, I am no able to reproduce the erro in simple application. More over, when I completely deleted all DCUs of my application, the error appears again with completely different picture.

Call stack always look like this

Code:

TLZ77Decoder.Decode($218279E,$218268C,132,65)
TPNGGraphic.ReadRow($218268C,1637464)
TPNGGraphic.LoadIDAT((no value))
TPNGGraphic.LoadFromStream($2138494)
LoadBmpFromPngStream($214C510,???)
TsAlphaImageList.GenerateStdList
TsAlphaImageList.Loaded

error appears on Row 8 of 16×16 PNG image, function Inflate in TLZ77Decoder.Decode returns -3.

I am using Delphi 7.1 on Windows 8.1 64bit.

Pavel

July 15, 2015 at 4:14 pm #53664

Pavel Poles
Participant

Hi,

finally seems to be Compiler issue, see my other post.

Pavel
Author

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