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PNGMetadataExtractor Class Reference

PNG frame counter. More...

Collaboration diagram for PNGMetadataExtractor:
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Static Public Member Functions

static getMetadata ($filename)
 

Public Attributes

const MAX_CHUNK_SIZE = 3145728
 
const VERSION = 1
 

Static Private Member Functions

static read ($fh, $size)
 Read a chunk, checking to make sure its not too big. More...
 

Static Private Attributes

static int $crcSize
 
static string $pngSig
 
static array $textChunks
 

Detailed Description

PNG frame counter.

Definition at line 33 of file PNGMetadataExtractor.php.

Member Function Documentation

static PNGMetadataExtractor::getMetadata (   $filename)
static

Definition at line 46 of file PNGMetadataExtractor.php.

References $content, $name, $t, $value, as, is(), list, TS_EXIF, wfDebug(), and wfTimestamp().

Referenced by BitmapMetadataHandler\PNG(), PNGMetadataExtractorTest\testApngAnimationMetadata(), PNGMetadataExtractorTest\testPngBitDepth1(), PNGMetadataExtractorTest\testPngBitDepth8(), PNGMetadataExtractorTest\testPngGreyscaleColour(), PNGMetadataExtractorTest\testPngGreyscaleNoAlphaColour(), PNGMetadataExtractorTest\testPngIndexColour(), PNGMetadataExtractorTest\testPngNativeText(), PNGMetadataExtractorTest\testPngNativeTextNonAscii(), PNGMetadataExtractorTest\testPngNativetZtxt(), PNGMetadataExtractorTest\testPngRgbColour(), PNGMetadataExtractorTest\testPngRgbNoAlphaColour(), and PNGMetadataExtractorTest\testStaticPngAnimationMetadata().

static PNGMetadataExtractor::read (   $fh,
  $size 
)
staticprivate

Read a chunk, checking to make sure its not too big.

Parameters
resource$fhThe file handle
int$sizeSize in bytes.
Exceptions
ExceptionIf too big
Returns
string The chunk.

Definition at line 418 of file PNGMetadataExtractor.php.

Member Data Documentation

int PNGMetadataExtractor::$crcSize
staticprivate

Definition at line 38 of file PNGMetadataExtractor.php.

string PNGMetadataExtractor::$pngSig
staticprivate

Definition at line 35 of file PNGMetadataExtractor.php.

array PNGMetadataExtractor::$textChunks
staticprivate

Definition at line 41 of file PNGMetadataExtractor.php.

const PNGMetadataExtractor::MAX_CHUNK_SIZE = 3145728

Definition at line 44 of file PNGMetadataExtractor.php.

const PNGMetadataExtractor::VERSION = 1

Definition at line 43 of file PNGMetadataExtractor.php.

Referenced by PNGHandler\isMetadataValid(), and BitmapMetadataHandler\PNG().

The documentation for this class was generated from the following file: