Image Discoloration using PDF as CGImageSource

Originator:travis.fischer
Number:rdar://10759612 Date Originated:Jan 26, 2012
Status:Open Resolved:
Product:iPad SDK Product Version:1.5.1
Classification:UI/Usability Reproducible:Always
 
26-Jan-2012 12:57 PM Travis Fischer:
Summary:

Thumbnails created using an CGImageSource using a PDF as the source have a blue tint to all images.

Steps to Reproduce:

1. Create a CGImageSource using a PDF that contains images.
2. Create a thumbnail image using CGImageSourceCreateThumbnailAtIndex.

Expected Results:

Thumbnail of a PDF page should look like the PDF page.

Actual Results:

Images in thumbnails have a blue tint.

Regression:

Notes:

This is similar behavior to problems I reported in rdar://8998927.  However, that was only happening to images without an embedded color profile.  How the PDF was created also affected the previous bug.    In this case it is happening in all images regardless of how the source PDF was created.

I've attached a sample project that displays the PDF in a web view so you can see the expected coloration.  The second tab in the sample project creates thumbnails from a CGImageSource and displays them in a table view.

26-Jan-2012 12:57 PM Travis Fischer:
'ImageSourceBug.zip' was successfully uploaded

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