Rockbox Development > Feature Ideas

Rotate feature should be added to JPEG viewer.

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MajiKool Dragonâ„¢:
i'd like to see the ability to rotate images very much.

so i can rotate images to more efficiently fit the screen.

MajiKool Dragonâ„¢:
i would like to bring this topic back to life because, i've talked to several of my rockbox user friends, and they all agree this feature is much needed.



i might actually try to code this one my self! yay ;D  (though i'd rather someone who actually knows how to do it to do it)
just tell me what exactly i need to do... and hopefully at some point i might actually figure out how to do it.

saratoga:

--- Quote from: MajiKool Blingâ„¢ on October 08, 2008, 10:55:44 PM ---just tell me what exactly i need to do... and hopefully at some point i might actually figure out how to do it.

--- End quote ---

Take the output of the JPEG decoder and flip the rows and columns as needed to rotate the image.  Not much else to it.

MajiKool Dragonâ„¢:
ahhh.... and how do i do that ???


also i'm not quite sure what you meant but i would like to be able to rotate the image within the viewer on the go

Chronon:
Basically, you want to transpose the data.  I don't know C very well, so I don't know the most efficient way of doing this, but that's the game here.  Take the first row and turn it into the first column, etc.

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