PHP code example of stil / gif-endec

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

stil / gif-endec example snippets

GIFEndec\Events\FrameDecodedEvent;
use GIFEndec\IO\FileStream;
use GIFEndec\Decoder;

/**
 * Open GIF as FileStream
 */
$gifStream = new FileStream("path/to/animation.gif");

/**
 * Create Decoder instance from MemoryStream
 */
$gifDecoder = new Decoder($gifStream);

/**
 * Run decoder. Pass callback function to process decoded Frames when they're ready.
 */
$gifDecoder->decode(function (FrameDecodedEvent $event) {
    /**
     * Convert frame index to zero-padded strings (001, 002, 003)
     */
    $paddedIndex = str_pad($event->frameIndex, 3, '0', STR_PAD_LEFT);

    /**
     * Write frame images to directory
     */
    $event->decodedFrame->getStream()->copyContentsToFile(
        __DIR__ . "/frames/frame{$paddedIndex}.gif"
    );
    // Or get binary data as string:
    // $frame->getStream()->getContents()

    /**
     * You can access frame duration using Frame::getDuration() method, ex.:
     */
    echo $event->decodedFrame->getDuration() . "\n";
});

GIFEndec\Events\FrameRenderedEvent;
use GIFEndec\IO\FileStream;
use GIFEndec\Decoder;
use GIFEndec\Renderer;

/**
 * Open GIF as FileStream
 */
$gifStream = new FileStream("path/to/animation.gif");

/**
 * Create Decoder instance from MemoryStream
 */
$gifDecoder = new Decoder($gifStream);

/**
 * Create Renderer instance
 */
$gifRenderer = new Renderer($gifDecoder);

/**
 * Run decoder. Pass callback function to process decoded Frames when they're ready.
 */
$gifRenderer->start(function (FrameRenderedEvent $event) {
    /**
     * $gdResource is a GD image resource. See http://php.net/manual/en/book.image.php
     */

    /**
     * Write frame images to directory
     */
    imagepng($event->renderedFrame, __DIR__ . "/frames/frame{$event->frameIndex}.png");
});

use GIFEndec\Color;
use GIFEndec\Encoder;
use GIFEndec\Frame;
use GIFEndec\IO\FileStream;

$gif = new Encoder();

foreach (glob('skateboarder/frame*.gif') as $file) {
    $stream = new FileStream($file);
    $frame = new Frame();
    $frame->setDisposalMethod(1);
    $frame->setStream($stream);
    $frame->setDuration(30); // 0.30s
    $frame->setTransparentColor(new Color(255, 255, 255));
    $gif->addFrame($frame);
}

$gif->addFooter(); // Required after you're done with adding frames

// Copy result animation to file
$gif->getStream()->copyContentsToFile('skateboarder/animation.gif');