GIF frame counter. More...

Static Public Member Functions
static	decodeBPP ($data)
static	getMetadata ($filename)
static	readBlock ($fh, $includeLengths=false)
	Read a block.
static	readGCT ($fh, $bpp)
static	skipBlock ($fh)
Public Attributes
const	MAX_SUBBLOCKS = 262144
const	VERSION = 1
Static Public Attributes
static	$gif_extension_sep
static	$gif_frame_sep
static	$gif_term

Detailed Description

GIF frame counter.

Definition at line 19 of file GIFMetadataExtractor.php.

Member Function Documentation

static GIFMetadataExtractor::decodeBPP ( $ data ) [static]

Parameters:

$data

Returns:: int

Definition at line 250 of file GIFMetadataExtractor.php.

Referenced by getMetadata().

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static GIFMetadataExtractor::getMetadata ( $ filename ) [static]

Exceptions:

Exception

Parameters:

$filename string

Returns:: array

Definition at line 36 of file GIFMetadataExtractor.php.

References $comment, decodeBPP(), UtfNormal\quickIsNFCVerify(), readBlock(), readGCT(), skipBlock(), wfDebug(), wfRestoreWarnings(), and wfSuppressWarnings().

Referenced by BitmapMetadataHandler\GIF(), and GIFMetadataExtractorTest\testGetMetadata().

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static GIFMetadataExtractor::readBlock	(	$	fh,
		$	includeLengths = `false`
	)		`[static]`

Read a block.

In the GIF format, a block is made up of several sub-blocks. Each sub block starts with one byte saying how long the sub-block is, followed by the sub-block. The entire block is terminated by a sub-block of length 0.

Parameters:

$fh	FileHandle
$includeLengths	Boolean Include the length bytes of the sub-blocks in the returned value. Normally this is false, except XMP is weird and does a hack where you need to keep these length bytes.