images files in c

This is a discussion on images files in c within the C Programming forums, part of the General Programming Boards category; hey all! Can somebody provide a link so i can educate myself on how to manipulate image files in c, ...

  1. #1
    Registered User the bassinvader's Avatar
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    Smile images files in c

    hey all!

    Can somebody provide a link so i can educate myself on how to manipulate
    image files in c, Jpeg for example as my searches dont seem to provide any
    usefull results

  2. #2
    {Jaxom,Imriel,Liam}'s Dad Kennedy's Avatar
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    Try www.google.com
    Then put into the search field something like, oh I don't know, jpeg file structure???

  3. #3
    Registered User the bassinvader's Avatar
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    sorry!!
    That was a bad question.

    What i mean is i already know the way a jpeg file works....roughly, but i dont know how to open the file in c.
    I'm sure this question makes me look an idiot but nevertheless i dont know the answear so if you could shower me with your wisdom i'd be gratefull

  4. #4
    The superhaterodyne twomers's Avatar
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    >> but i dont know how to open the file in c.

    Can't you just use a FILE pointer to open it, and access the file through that? Afterall, it's a file I don't know if there are any standard functions around for playing with images specifically.

  5. #5
    and the hat of wrongness Salem's Avatar
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    FILE *fp = fopen("image.jpg","rb");

    Read a byte at a time, and use your knowledge of the file format to deal with it.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.
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  6. #6
    {Jaxom,Imriel,Liam}'s Dad Kennedy's Avatar
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    Quote Originally Posted by the bassinvader
    if you could shower me with your wisdom i'd be gratefull
    Sorry kid, I don't have enough to go around.

  7. #7
    Registered User the bassinvader's Avatar
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    Oh right!!!
    So i have to open it using binary!?!

    not done anything using that before. What fun lies ahead

    thanx one and all!!

    you can stop showering now

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