LLPngWrapper Class Reference

#include <llpngwrapper.h>

Collaboration diagram for LLPngWrapper:

List of all members.

Public Member Functions

LLPngWrapper ()

virtual ~LLPngWrapper ()

BOOL isValidPng (U8 *src)

BOOL readPng (U8 *src, LLImageRaw *rawImage, ImageInfo *infop=NULL)

BOOL writePng (const LLImageRaw *rawImage, U8 *dst)

U32 getFinalSize ()

LLString getErrorMessage ()

Protected Member Functions

void normalizeImage ()

void updateMetaData ()

Private Member Functions

void releaseResources ()

Static Private Member Functions

static void writeFlush (png_structp png_ptr)

static void errorHandler (png_structp png_ptr, png_const_charp msg)

static void readDataCallback (png_structp png_ptr, png_bytep dest, png_size_t length)

static void writeDataCallback (png_structp png_ptr, png_bytep src, png_size_t length)

Private Attributes

png_structp mReadPngPtr

png_infop mReadInfoPtr

png_structp mWritePngPtr

png_infop mWriteInfoPtr

U8 ** mRowPointers

png_uint_32 mWidth

png_uint_32 mHeight

S32 mBitDepth

S32 mColorType

S32 mChannels

S32 mInterlaceType

S32 mCompressionType

S32 mFilterMethod

U32 mFinalSize

BOOL mHasBKGD

png_color_16p mBackgroundColor

F64 mGamma

LLString mErrorMessage

Classes

struct ImageInfo

struct PngDataInfo

Detailed Description

Definition at line 37 of file llpngwrapper.h.

Constructor & Destructor Documentation

LLPngWrapper::LLPngWrapper ( )

Definition at line 43 of file llpngwrapper.cpp.

LLPngWrapper::~LLPngWrapper ( ) [virtual]

Definition at line 59 of file llpngwrapper.cpp.

References releaseResources().

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Member Function Documentation

BOOL LLPngWrapper::isValidPng ( U8 * src )

Definition at line 65 of file llpngwrapper.cpp.

References FALSE, mErrorMessage, and TRUE.

BOOL LLPngWrapper::readPng	(	U8 *	src,
		LLImageRaw *	rawImage,
		ImageInfo *	infop = `NULL`
	)

Definition at line 119 of file llpngwrapper.cpp.

References errorHandler(), FALSE, LLImageBase::getData(), i, mBitDepth, mChannels, mColorType, LLPngWrapper::ImageInfo::mComponents, mCompressionType, LLPngWrapper::PngDataInfo::mData, mErrorMessage, mFilterMethod, mFinalSize, LLPngWrapper::ImageInfo::mHeight, mHeight, mInterlaceType, LLPngWrapper::PngDataInfo::mOffset, mReadInfoPtr, mReadPngPtr, mRowPointers, LLPngWrapper::ImageInfo::mWidth, mWidth, normalizeImage(), NULL, readDataCallback(), releaseResources(), LLImageRaw::resize(), TRUE, and updateMetaData().

Referenced by LLImagePNG::decode(), and LLImagePNG::updateData().

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BOOL LLPngWrapper::writePng	(	const LLImageRaw *	rawImage,
		U8 *	dst
	)

Definition at line 269 of file llpngwrapper.cpp.

References errorHandler(), FALSE, LLImageBase::getComponents(), LLImageBase::getData(), LLImageBase::getHeight(), LLImageBase::getWidth(), i, mBitDepth, mChannels, mColorType, mCompressionType, LLPngWrapper::PngDataInfo::mData, mErrorMessage, mFilterMethod, mFinalSize, mHeight, mInterlaceType, LLPngWrapper::PngDataInfo::mOffset, mWidth, mWriteInfoPtr, mWritePngPtr, NULL, releaseResources(), TRUE, writeDataCallback(), and writeFlush().

Referenced by LLImagePNG::encode().

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U32 LLPngWrapper::getFinalSize ( )

Definition at line 381 of file llpngwrapper.cpp.

References mFinalSize.

Referenced by LLImagePNG::encode().

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LLString LLPngWrapper::getErrorMessage ( )

Definition at line 387 of file llpngwrapper.cpp.

References mErrorMessage.

Referenced by LLImagePNG::decode(), LLImagePNG::encode(), and LLImagePNG::updateData().

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void LLPngWrapper::normalizeImage ( ) [protected]

Definition at line 198 of file llpngwrapper.cpp.

References mBackgroundColor, mBitDepth, mColorType, mGamma, mHasBKGD, mReadInfoPtr, and mReadPngPtr.

Referenced by readPng().

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void LLPngWrapper::updateMetaData ( ) [protected]

Definition at line 256 of file llpngwrapper.cpp.

References mBackgroundColor, mBitDepth, mChannels, mColorType, mHasBKGD, mHeight, mReadInfoPtr, mReadPngPtr, and mWidth.

Referenced by readPng().

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void LLPngWrapper::writeFlush ( png_structp png_ptr ) [static, private]

Definition at line 108 of file llpngwrapper.cpp.

Referenced by writePng().

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void LLPngWrapper::errorHandler	(	png_structp	png_ptr,
		png_const_charp	msg
	)			`[static, private]`

Definition at line 82 of file llpngwrapper.cpp.

Referenced by readPng(), and writePng().

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void LLPngWrapper::readDataCallback	(	png_structp	png_ptr,
		png_bytep	dest,
		png_size_t	length
	)			`[static, private]`

Definition at line 89 of file llpngwrapper.cpp.

References LLPngWrapper::PngDataInfo::mData, and LLPngWrapper::PngDataInfo::mOffset.

Referenced by readPng().

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void LLPngWrapper::writeDataCallback	(	png_structp	png_ptr,
		png_bytep	src,
		png_size_t	length
	)			`[static, private]`

Definition at line 99 of file llpngwrapper.cpp.

References LLPngWrapper::PngDataInfo::mData, and LLPngWrapper::PngDataInfo::mOffset.

Referenced by writePng().

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void LLPngWrapper::releaseResources ( ) [private]

Definition at line 357 of file llpngwrapper.cpp.

References mReadInfoPtr, mReadPngPtr, mRowPointers, mWriteInfoPtr, mWritePngPtr, and NULL.

Referenced by readPng(), writePng(), and ~LLPngWrapper().

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Member Data Documentation

png_structp LLPngWrapper::mReadPngPtr [private]

Definition at line 78 of file llpngwrapper.h.

Referenced by normalizeImage(), readPng(), releaseResources(), and updateMetaData().

png_infop LLPngWrapper::mReadInfoPtr [private]

Definition at line 79 of file llpngwrapper.h.

Referenced by normalizeImage(), readPng(), releaseResources(), and updateMetaData().

png_structp LLPngWrapper::mWritePngPtr [private]

Definition at line 80 of file llpngwrapper.h.

Referenced by releaseResources(), and writePng().

png_infop LLPngWrapper::mWriteInfoPtr [private]

Definition at line 81 of file llpngwrapper.h.

Referenced by releaseResources(), and writePng().

U8** LLPngWrapper::mRowPointers [private]

Definition at line 83 of file llpngwrapper.h.

Referenced by readPng(), and releaseResources().

png_uint_32 LLPngWrapper::mWidth [private]

Definition at line 85 of file llpngwrapper.h.

Referenced by readPng(), updateMetaData(), and writePng().

png_uint_32 LLPngWrapper::mHeight [private]

Definition at line 86 of file llpngwrapper.h.

Referenced by readPng(), updateMetaData(), and writePng().

S32 LLPngWrapper::mBitDepth [private]

Definition at line 87 of file llpngwrapper.h.

Referenced by normalizeImage(), readPng(), updateMetaData(), and writePng().

S32 LLPngWrapper::mColorType [private]

Definition at line 88 of file llpngwrapper.h.

Referenced by normalizeImage(), readPng(), updateMetaData(), and writePng().

S32 LLPngWrapper::mChannels [private]

Definition at line 89 of file llpngwrapper.h.

Referenced by readPng(), updateMetaData(), and writePng().

S32 LLPngWrapper::mInterlaceType [private]

Definition at line 90 of file llpngwrapper.h.

Referenced by readPng(), and writePng().

S32 LLPngWrapper::mCompressionType [private]

Definition at line 91 of file llpngwrapper.h.

Referenced by readPng(), and writePng().

S32 LLPngWrapper::mFilterMethod [private]

Definition at line 92 of file llpngwrapper.h.

Referenced by readPng(), and writePng().

U32 LLPngWrapper::mFinalSize [private]

Definition at line 94 of file llpngwrapper.h.

Referenced by getFinalSize(), readPng(), and writePng().

BOOL LLPngWrapper::mHasBKGD [private]

Definition at line 96 of file llpngwrapper.h.

Referenced by normalizeImage(), and updateMetaData().

png_color_16p LLPngWrapper::mBackgroundColor [private]

Definition at line 97 of file llpngwrapper.h.

Referenced by normalizeImage(), and updateMetaData().

F64 LLPngWrapper::mGamma [private]

Definition at line 99 of file llpngwrapper.h.

Referenced by normalizeImage().

LLString LLPngWrapper::mErrorMessage [private]

Definition at line 101 of file llpngwrapper.h.

Referenced by getErrorMessage(), isValidPng(), readPng(), and writePng().

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

llimage/llpngwrapper.h
llimage/llpngwrapper.cpp


Public Member Functions
	LLPngWrapper ()
virtual	~LLPngWrapper ()
BOOL	isValidPng (U8 *src)
BOOL	readPng (U8 src, LLImageRaw rawImage, ImageInfo *infop=NULL)
BOOL	writePng (const LLImageRaw rawImage, U8 dst)
U32	getFinalSize ()
LLString	getErrorMessage ()
Protected Member Functions
void	normalizeImage ()
void	updateMetaData ()
Private Member Functions
void	releaseResources ()
Static Private Member Functions
static void	writeFlush (png_structp png_ptr)
static void	errorHandler (png_structp png_ptr, png_const_charp msg)
static void	readDataCallback (png_structp png_ptr, png_bytep dest, png_size_t length)
static void	writeDataCallback (png_structp png_ptr, png_bytep src, png_size_t length)
Private Attributes
png_structp	mReadPngPtr
png_infop	mReadInfoPtr
png_structp	mWritePngPtr
png_infop	mWriteInfoPtr
U8 **	mRowPointers
png_uint_32	mWidth
png_uint_32	mHeight
S32	mBitDepth
S32	mColorType
S32	mChannels
S32	mInterlaceType
S32	mCompressionType
S32	mFilterMethod
U32	mFinalSize
BOOL	mHasBKGD
png_color_16p	mBackgroundColor
F64	mGamma
LLString	mErrorMessage
Classes
struct	ImageInfo
struct	PngDataInfo