public function testInitFromData()
{
$data = file_get_contents('tests/images/animation.gif');
$decoder = new Decoder();
$decoder->initFromData($data);
$this->assertInstanceOf('Intervention\\Gif\\Decoder', $decoder);
}
public function testDecodeEncoded()
{
// create two resource
$res1 = imagecreatetruecolor(20, 15);
imagefill($res1, 0, 0, 850736919);
$res2 = imagecreatetruecolor(20, 15);
imagefill($res1, 0, 0, 11876119);
// create encoded
$encoder = new Encoder();
$encoder->setCanvas(20, 15);
$encoder->setLoops(2);
$encoder->createFrameFromGdResource($res1, 100);
$encoder->createFrameFromGdResource($res2, 100);
$encoded = $encoder->encode();
// decode encoded
$decoder = new Decoder();
$decoder->initFromData($encoded);
$decoded = $decoder->decode();
// check after decoding
$this->assertEquals(20, $decoded->getCanvasWidth());
$this->assertEquals(15, $decoded->getCanvasHeight());
$this->assertEquals(2, $decoded->countFrames());
$this->assertEquals(2, $decoded->getLoops());
$this->assertEquals(32, $decoded->countGlobalColors());
$this->assertFalse($decoded->hasGlobalColorTable());
foreach ($decoded->getFrames() as $frame) {
$this->assertEquals(100, $frame->getDelay());
}
}
/**
* Processes and returns encoded image as GIF string
*
* @return string
*/
protected function processGif()
{
$image = $this->image;
$encoder = new GifEncoder();
$encoder->setCanvas($image->getWidth(), $image->getHeight());
$encoder->setLoops($image->getContainer()->getLoops());
// set frames
foreach ($image as $frame) {
// extract each frame
ob_start();
imagegif($frame->getCore());
$frame_data = ob_get_contents();
ob_end_clean();
// decode frame
$decoder = new GifDecoder();
$decoder->initFromData($frame_data);
$decoded = $decoder->decode();
// add each frame
$encoder->addFrame($decoded->getFrame()->setLocalColorTable($decoded->getGlobalColorTable())->setDelay($frame->delay));
}
return $encoder->encode();
}
/**
* Initiates new image from binary data
*
* @param string $data
* @return \Intervention\Image\Image
*/
public function initFromBinary($binary)
{
try {
// try to custom decode gif
$gifDecoder = new GifDecoder();
$decoded = $gifDecoder->initFromData($binary)->decode();
// create image
$container = Container::initFromDecoded($decoded);
$image = $this->initFromContainer($container);
$image->mime = 'image/gif';
} catch (\Exception $e) {
$resource = @imagecreatefromstring($binary);
if ($resource === false) {
throw new \Intervention\Image\Exception\NotReadableException("Unable to init from given binary data.");
}
// create image
$image = $this->initFromGdResource($resource);
$image->mime = finfo_buffer(finfo_open(FILEINFO_MIME_TYPE), $binary);
}
return $image;
}
