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garich



Joined: 14 Aug 2005
Posts: 2
PostPosted: Sun Aug 14, 2005 2:08 am    Post subject: Image Viewer Reply with quote
Hi!

I will like to write a simple program: a image viewer.

The problem i have right now is that i do not know how i have to treat the images under C (i will like it to work, first, over JPG images) . I will like the program to read the images from a directory in the MS and show them, but i donīt know how to show a image ... can anyone help me? do you know of any existing code to do this?

Thanks!
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Shine



Joined: 03 Dec 2004
Posts: 728
Location: Germany
PostPosted: Sun Aug 14, 2005 2:36 am    Post subject: Reply with quote
You can use the loadImage function from graphics.c, but currently it supports png, only. With the other functions from graphics.c it would look like this (not tested, but should work) :

Code:

initGraphics();
Image* image = loadImage("yourimage.png");
blitImageToScreen(0, 0, image->imageWidth, image->imageHeight, image, 0, 0);
flipScreen();


If you have changed the loadImage-function to load JPGs, let me know, then I can add it to my function, too.

Another idea is to use SDL. I'm sure there are some demo applications written in SDL, which are doing what you want, including perhaps image scaling and all kinds of graphics formats. Compiling SDL programs for PSP should be possible without much changes.
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garich



Joined: 14 Aug 2005
Posts: 2
PostPosted: Sun Aug 14, 2005 2:38 am    Post subject: Reply with quote
Sorry but .... what is SDL??

Thanks!
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Shine



Joined: 03 Dec 2004
Posts: 728
Location: Germany
PostPosted: Sun Aug 14, 2005 2:41 am    Post subject: Reply with quote
garich wrote:
Sorry but .... what is SDL??


Google, first result: http://www.libsdl.org/

It is in the PSP svn repository and is already used for some programs from the pspware PSP svn repository.
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