RELEASE: CutePop - a PHP GIF manipulation library - Computers & Technology

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RELEASE: CutePop - a PHP GIF manipulation library

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Kieran Menor
Administrator
Pop-Tart Cat

Posts: 2809/4211
Since: 2007-08-20 11:29:40 AM
From: Denmark

Last seen: 4 hours, 24 minutes and 29 seconds ago

Posted on 2011-05-03 07:13:21 PM

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This is the initial release of CutePop, my GIF manipulation library for PHP. It's still pretty crude and it's feature set is somewhat unimpressive at the moment, but I have plans to make it quite extensive.

Current version: 20110504a

Download it here.

Features:

Load and save GIF files
Replace palette colors
Supports animated GIFs
Import and export frames
Change framerate
And some other bullshit...

Planned:

Compress/recompress image data
Image data manipulation

Noteworthy methods:

CutePop
CutePop_GifDataStream CutePop::factory ( void )	Returns an empty GIF data stream object.
CutePop_GifDataStream CutePop::fromFile ( string $filename )	Creates a GIF data stream object from a GIF file.

CutePop_GifDataStream
int CutePop_GifDataStream::getWidth ( void )	Returns the logical screen width for the data stream.
void CutePop_GifDataStream::setWidth ( int $width )	Sets the logical screen width for the data stream.
int CutePop_GifDataStream::getHeight ( void )	Returns the logical screen height for the data stream.
void CutePop_GifDataStream::setHeight ( int $height )	Sets the logical screen height for the data stream.
CutePop_ColorTable CutePop_GifDataStream::getColorTable ( void )	Returns the global color table object for the GIF stream.
void CutePop_GifDataStream::importColorTable ( CutePop_ColorTable $colorTable )	Import a color table object for use as global color table.
mixed CutePop_GifDataStream::getLoopCount ( void )	Returns NULL if the GIF is not animated. Otherwise returns amount of loops (0-65535, 0 = infinite).
void CutePop_GifDataStream::setLoopCount ( mixed $count )	Sets amount of loops for animated GIFs. See above for argument values.
int CutePop_GifDataStream::getImageCount ( void )	Return the number of images in the data stream.
CutePop_GifImage CutePop_GifDataStream::getImage ( int $index )	Return an image from the data stream.
void CutePop_GifDataStream::appendImage ( CutePop_GifImage $image )	Add an image to the data stream.
string CutePop_GifDataStream::render ( void )	Renders the data stream and returns the result as a string.
void CutePop_GifDataStream::saveAs ( string $filename [, bool $overwrite ] )	Renders the data stream and writes the result to a file.

CutePop_GifImage
int CutePop_GifImage::getDelayTime ( void )	Returns the duration of the image in 1/100ths of a second (animated GIFs only).
void CutePop_GifImage::setDelayTime ( int $delayTime )	Sets the duration of the image (animated GIFs only).
mixed CutePop_GifImage::getTransparentColorIndex ( void )	Returns the palette index for the transparent color or NULL if none is set.
void CutePop_GifImage::setTransparentColorIndex ( int $index )	Sets the palette index for the transparent color.
CutePop_ColorTable CutePop_GifImage::getColorTable ( void )	Returns the global color table object for the GIF stream.
void CutePop_GifImage::importColorTable ( CutePop_ColorTable $colorTable )	Import a color table object for use as global color table.

CutePop_ColorTable
int CutePop_ColorTable::getSize ( void )	Returns the color table size.
array CutePop_ColorTable::getColor ( int $index )	Returns the color at the specified index. Array format is array( 0 => $r, 1 => $g, 2 => $b ).
void CutePop_ColorTable::replaceColor ( int $index, int $r, int $g, int $b )	Replaces the color at the specified index.
void CutePop_ColorTable::replaceColor ( int $index, array $color )	See above. $color like array in getColor.

Usage examples:

Replace a palette color

Code
try { $gif = CutePop::fromFile('original.gif'); $gif->getColorTable()->replaceColor(1, 255, 128, 0); $gif->saveAs('new.gif'); } catch(Exception $e) { echo $e->getMessage(); }
Split a file

Code
try { $gif = CutePop::fromFile('original.gif'); for($i = 0; $i < $gif->getImageCount(); $i++) { $image = CutePop::factory(); $image->setWidth($gif->getWidth()); $image->setHeight($gif->getHeight()); $colorTable = $gif->getColorTable(); if($colorTable !== NULL) { $image->importColorTable($colorTable); } $image->appendImage($gif->getImage($i)); $image->saveAs($i . '.gif'); } } catch(Exception $e) { echo $e->getMessage(); }
Merge files (assuming they are all the same size)

Code
try { $gif = CutePop::factory(); foreach(glob('*.gif') as $filename) { $tmp = CutePop::fromFile($filename); if(!$gif->getWidth()) { $gif->setWidth($tmp->getWidth()); $gif->setHeight($tmp->getHeight()); $colorTable = $tmp->getColorTable(); if($colorTable !== NULL) { $gif->importColorTable($colorTable); } } $tmpImage = $tmp->getImage(0); $tmpImage->setDelayTime(5); $gif->appendImage($tmpImage); } $gif->setLoopCount(0); $gif->saveAs('animated.gif'); } catch(Exception $e) { echo $e->getMessage(); }

DISCLAIMER: ALL EXAMPLES ARE UNTESTED. I CANNOT BE HELD RESPONSIBLE IF THIS SOFTWARE MAKES YOUR COMPUTER EXPLODE.

Noobish Noobsicle
Pop-Tart Cat

Posts: 1791/1951
Since: 2008-12-30 02:52:18 PM
From: Santa Barbara, CA.

Last seen: 4 months and 16 days ago

Posted on 2011-05-03 11:08:49 PM

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Oooh... shiny PHP. I was just wondering how you got all those different colored poptart cats!

Sadly, I don't have any real use for it. Nice to see you've made something new, though!

imjake9
Blurp

Posts: 460/530
Since: 2010-06-01 05:53:47 PM

Last seen: 1 day ago

Posted on 2011-05-07 01:46:54 AM

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That's actually pretty darn cool. I admittedly don't do much with PHP besides basic forms/dynamic pages, but this looks nice.
I don't know if this'd be possible, but it'd be cool if you could take a non-animated GIF and plug an array of colors into it to make palette animation. Now that I think about it, it should be entirely possible. If you make something that can do palette cycles/animations with pure PHP, I'll give you a cookie.

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