Bug#497006: ask_before_save is ignored if auto_save_rotated

[Ying-Chun Liu (PaulLiu)]

Hi caleb,

The lossless rotation of jpeg can only be applied on certain image size,
not all image size.
The lossless rotation is basically based on rotate the blocks of jpeg
files, and block could be 8x8, 16x16, or 16x8.

Your image is 320x308, which 308 is not a multiple of 8
That's why the incomplete blocks cannot be rotate.

Please refer http://www.faqs.org/faqs/jpeg-faq/part1/index.html

To rotate these images, we have to re-jpeg the image and then it becomes
lossy.

Regards,
 Paul

-- 
                                                PaulLiu(劉穎駿)
E-mail address: [EMAIL PROTECTED]

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