LibreOffice Module vcl (master) 1
Public Member Functions | Public Attributes | Private Member Functions | Private Attributes | List of all members
vcl::GraphicFormatDetector Class Reference

#include <GraphicFormatDetector.hxx>

Collaboration diagram for vcl::GraphicFormatDetector:
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Public Member Functions

 GraphicFormatDetector (SvStream &rStream, OUString aFormatExtension, bool bExtendedInfo=false)
 
bool detect ()
 
bool checkMET ()
 
bool checkBMP ()
 
bool checkWMF ()
 
bool checkEMF ()
 
bool checkPCX ()
 
bool checkTIF ()
 
bool checkGIF ()
 
bool checkPNG ()
 
bool checkAPNG ()
 
bool checkJPG ()
 
bool checkSVM ()
 
bool checkPCD ()
 
bool checkPSD ()
 
bool checkEPS ()
 
bool checkDXF ()
 
bool checkPCT ()
 
bool checkPBM ()
 
bool checkPGM ()
 
bool checkPPM ()
 
bool checkRAS ()
 
bool checkXPM ()
 
bool checkXBM ()
 
bool checkSVG ()
 
bool checkTGA ()
 
bool checkMOV ()
 
bool checkPDF ()
 
bool checkWEBP ()
 
const GraphicMetadata & getMetadata ()
 

Public Attributes

SvStream & mrStream
 
OUString maExtension
 
std::vector< sal_uInt8 > maFirstBytes
 
sal_uInt32 mnFirstLong
 
sal_uInt32 mnSecondLong
 
sal_uInt64 mnStreamPosition
 
sal_uInt64 mnStreamLength
 

Private Member Functions

sal_uInt8 * checkAndUncompressBuffer (sal_uInt8 *aUncompressedBuffer, sal_uInt32 nSize, sal_uInt64 &nDecompressedSize)
 Checks whether mrStream needs to be uncompressed and returns a pointer to the to aUncompressedBuffer or a pointer to maFirstBytes if it doesn't need to be uncompressed. More...
 

Private Attributes

bool mbExtendedInfo
 
bool mbWasCompressed
 
GraphicMetadata maMetadata
 

Detailed Description

Definition at line 144 of file GraphicFormatDetector.hxx.

Constructor & Destructor Documentation

◆ GraphicFormatDetector()

vcl::GraphicFormatDetector::GraphicFormatDetector ( SvStream &  rStream,
OUString  aFormatExtension,
bool  bExtendedInfo = false 
)

Definition at line 375 of file GraphicFormatDetector.cxx.

Member Function Documentation

◆ checkAndUncompressBuffer()

sal_uInt8 * vcl::GraphicFormatDetector::checkAndUncompressBuffer ( sal_uInt8 *  aUncompressedBuffer,
sal_uInt32  nSize,
sal_uInt64 &  nDecompressedSize 
)
private

Checks whether mrStream needs to be uncompressed and returns a pointer to the to aUncompressedBuffer or a pointer to maFirstBytes if it doesn't need to be uncompressed.

Parameters
aUncompressedBufferthe buffer to hold the uncompressed data
nSizethe amount of bytes to uncompress
nRetSizethe amount of bytes actually uncompressed
Returns
sal_uInt8* a pointer to maFirstBytes or aUncompressed buffer

Definition at line 1404 of file GraphicFormatDetector.cxx.

References ZCodec::BeginCompression(), ZCodec::EndCompression(), i, ZCodec::IsZCompressed(), maFirstBytes, mbWasCompressed, mnFirstLong, mnSecondLong, mnStreamPosition, mrStream, ZCodec::Read(), SvStream::Seek(), and ZCODEC_DEFAULT_COMPRESSION.

Referenced by checkEMF(), checkSVG(), and checkWMF().

◆ checkAPNG()

bool vcl::GraphicFormatDetector::checkAPNG ( )

Definition at line 957 of file GraphicFormatDetector.cxx.

References APNG, vcl::PngImageReader::isAPng(), maMetadata, GraphicMetadata::mnFormat, mnStreamPosition, mrStream, and SvStream::Seek().

Referenced by vcl::peekGraphicFormat().

◆ checkBMP()

bool vcl::GraphicFormatDetector::checkBMP ( )

Definition at line 467 of file GraphicFormatDetector.cxx.

References BMP, Size::getHeight(), Size::getWidth(), Size::Height(), maFirstBytes, GraphicMetadata::maLogSize, maMetadata, GraphicMetadata::maPixSize, GraphicMetadata::maPreferredLogSize, GraphicMetadata::maPreferredMapMode, mbExtendedInfo, GraphicMetadata::mnBitsPerPixel, GraphicMetadata::mnFormat, GraphicMetadata::mnPlanes, mnStreamPosition, mrStream, NOT, SvStream::ReadUInt16(), SvStream::ReadUInt32(), SvStream::Seek(), SvStream::SeekRel(), SvStream::SetEndian(), Size::setHeight(), Size::setWidth(), and Size::Width().

Referenced by GraphicDescriptor::ImpDetectBMP(), and vcl::peekGraphicFormat().

◆ checkDXF()

bool vcl::GraphicFormatDetector::checkDXF ( )

Definition at line 1137 of file GraphicFormatDetector.cxx.

References DXF, i, maFirstBytes, maMetadata, and GraphicMetadata::mnFormat.

Referenced by GraphicDescriptor::ImpDetectDXF(), and vcl::peekGraphicFormat().

◆ checkEMF()

bool vcl::GraphicFormatDetector::checkEMF ( )

Definition at line 587 of file GraphicFormatDetector.cxx.

References checkAndUncompressBuffer(), EMF, EMZ, GraphicMetadata::maLogSize, maMetadata, GraphicMetadata::maPixSize, mbExtendedInfo, mbWasCompressed, mnFirstLong, GraphicMetadata::mnFormat, mnStreamLength, Size::setHeight(), Size::setWidth(), and WMF_EMF_CHECK_SIZE.

Referenced by GraphicDescriptor::ImpDetectEMF(), and vcl::peekGraphicFormat().

◆ checkEPS()

bool vcl::GraphicFormatDetector::checkEPS ( )

Definition at line 1119 of file GraphicFormatDetector.cxx.

References vcl::checkArrayForMatchingStrings(), EPS, maFirstBytes, maMetadata, mnFirstLong, and GraphicMetadata::mnFormat.

Referenced by GraphicDescriptor::ImpDetectEPS(), and vcl::peekGraphicFormat().

◆ checkGIF()

bool vcl::GraphicFormatDetector::checkGIF ( )

Definition at line 831 of file GraphicFormatDetector.cxx.

References GIF, maFirstBytes, maMetadata, GraphicMetadata::maPixSize, mbExtendedInfo, GraphicMetadata::mnBitsPerPixel, mnFirstLong, and GraphicMetadata::mnFormat.

Referenced by GraphicDescriptor::ImpDetectGIF(), and vcl::peekGraphicFormat().

◆ checkJPG()

bool vcl::GraphicFormatDetector::checkJPG ( )

Definition at line 968 of file GraphicFormatDetector.cxx.

References JPG, maFirstBytes, maMetadata, mnFirstLong, and GraphicMetadata::mnFormat.

Referenced by vcl::peekGraphicFormat().

◆ checkMET()

bool vcl::GraphicFormatDetector::checkMET ( )

Definition at line 436 of file GraphicFormatDetector.cxx.

References SvStream::GetError(), i, maFirstBytes, maMetadata, MET, GraphicMetadata::mnFormat, mnStreamLength, mnStreamPosition, mrStream, nMagic, SvStream::ReadUChar(), SvStream::ReadUInt16(), SvStream::Seek(), SvStream::SeekRel(), SvStream::SetEndian(), and SvStream::Tell().

Referenced by GraphicDescriptor::ImpDetectMET(), and vcl::peekGraphicFormat().

◆ checkMOV()

bool vcl::GraphicFormatDetector::checkMOV ( )

Definition at line 1359 of file GraphicFormatDetector.cxx.

References maFirstBytes, maMetadata, GraphicMetadata::mnFormat, and MOV.

Referenced by vcl::peekGraphicFormat().

◆ checkPBM()

bool vcl::GraphicFormatDetector::checkPBM ( )

Definition at line 1185 of file GraphicFormatDetector.cxx.

References maMetadata, GraphicMetadata::mnFormat, mrStream, PBM, SvStream::ReadUChar(), and SvStream::Tell().

Referenced by GraphicDescriptor::ImpDetectPBM(), and vcl::peekGraphicFormat().

◆ checkPCD()

bool vcl::GraphicFormatDetector::checkPCD ( )

Definition at line 1055 of file GraphicFormatDetector.cxx.

References maMetadata, GraphicMetadata::mnFormat, mnStreamLength, mnStreamPosition, mrStream, PCD, SvStream::ReadBytes(), and SvStream::Seek().

Referenced by GraphicDescriptor::ImpDetectPCD(), and vcl::peekGraphicFormat().

◆ checkPCT()

bool vcl::GraphicFormatDetector::checkPCT ( )

Definition at line 1174 of file GraphicFormatDetector.cxx.

References maMetadata, GraphicMetadata::mnFormat, mnStreamLength, mnStreamPosition, mrStream, and PCT.

Referenced by GraphicDescriptor::ImpDetectPCT(), and vcl::peekGraphicFormat().

◆ checkPCX()

bool vcl::GraphicFormatDetector::checkPCX ( )

Definition at line 634 of file GraphicFormatDetector.cxx.

References aMap, OutputDevice::LogicToLogic(), GraphicMetadata::maLogSize, maMetadata, GraphicMetadata::maPixSize, GraphicMetadata::mnBitsPerPixel, GraphicMetadata::mnFormat, GraphicMetadata::mnPlanes, mrStream, PCX, SvStream::ReadUChar(), SvStream::ReadUInt16(), SvStream::SeekRel(), SvStream::SetEndian(), Size::setHeight(), Size::setWidth(), and SvStream::Tell().

Referenced by GraphicDescriptor::ImpDetectPCX(), and vcl::peekGraphicFormat().

◆ checkPDF()

bool vcl::GraphicFormatDetector::checkPDF ( )

Definition at line 1372 of file GraphicFormatDetector.cxx.

References maFirstBytes, maMetadata, GraphicMetadata::mnFormat, and PDF.

Referenced by vcl::peekGraphicFormat().

◆ checkPGM()

bool vcl::GraphicFormatDetector::checkPGM ( )

Definition at line 1198 of file GraphicFormatDetector.cxx.

References maMetadata, GraphicMetadata::mnFormat, mrStream, PGM, SvStream::ReadUChar(), and SvStream::Tell().

Referenced by GraphicDescriptor::ImpDetectPGM(), and vcl::peekGraphicFormat().

◆ checkPNG()

bool vcl::GraphicFormatDetector::checkPNG ( )

Definition at line 849 of file GraphicFormatDetector.cxx.

References SvStream::good(), Size::Height(), GraphicMetadata::maLogSize, maMetadata, GraphicMetadata::maPixSize, mbExtendedInfo, GraphicMetadata::mbIsAlpha, GraphicMetadata::mbIsTransparent, GraphicMetadata::mnBitsPerPixel, mnFirstLong, GraphicMetadata::mnFormat, GraphicMetadata::mnPlanes, mnSecondLong, mnStreamPosition, mrStream, PNG, PNG_IDAT_SIGNATURE, PNG_PHYS_SIGNATURE, PNG_SIGNATURE, PNG_SIGNATURE_SIZE, PNG_TRNS_SIGNATURE, SvStream::ReadUChar(), SvStream::ReadUInt32(), SvStream::Seek(), SvStream::SeekRel(), Size::setHeight(), Size::setWidth(), and Size::Width().

Referenced by GraphicDescriptor::ImpDetectPNG(), and vcl::peekGraphicFormat().

◆ checkPPM()

bool vcl::GraphicFormatDetector::checkPPM ( )

Definition at line 1211 of file GraphicFormatDetector.cxx.

References maMetadata, GraphicMetadata::mnFormat, mrStream, PPM, SvStream::ReadUChar(), and SvStream::Tell().

Referenced by GraphicDescriptor::ImpDetectPPM(), and vcl::peekGraphicFormat().

◆ checkPSD()

bool vcl::GraphicFormatDetector::checkPSD ( )

Definition at line 1072 of file GraphicFormatDetector.cxx.

References maMetadata, GraphicMetadata::maPixSize, mbExtendedInfo, GraphicMetadata::mnBitsPerPixel, mnFirstLong, GraphicMetadata::mnFormat, mnSecondLong, mnStreamPosition, mrStream, PSD, SvStream::ReadUInt16(), SvStream::ReadUInt32(), SvStream::Seek(), SvStream::SeekRel(), Size::setHeight(), and Size::setWidth().

Referenced by GraphicDescriptor::ImpDetectPSD(), and vcl::peekGraphicFormat().

◆ checkRAS()

bool vcl::GraphicFormatDetector::checkRAS ( )

Definition at line 1224 of file GraphicFormatDetector.cxx.

References maMetadata, mnFirstLong, GraphicMetadata::mnFormat, and RAS.

Referenced by GraphicDescriptor::ImpDetectRAS(), and vcl::peekGraphicFormat().

◆ checkSVG()

bool vcl::GraphicFormatDetector::checkSVG ( )

Definition at line 1264 of file GraphicFormatDetector.cxx.

References checkAndUncompressBuffer(), vcl::checkArrayForMatchingStrings(), maMetadata, mbWasCompressed, GraphicMetadata::mnFormat, mnStreamLength, mnStreamPosition, mrStream, SvStream::ReadBytes(), SvStream::Seek(), SVG, SVG_CHECK_SIZE, and SVGZ.

Referenced by GraphicDescriptor::ImpDetectSVG(), and vcl::peekGraphicFormat().

◆ checkSVM()

bool vcl::GraphicFormatDetector::checkSVM ( )

Definition at line 980 of file GraphicFormatDetector.cxx.

References OutputDevice::LogicToLogic(), GraphicMetadata::maLogSize, maMetadata, mbExtendedInfo, GraphicMetadata::mnFormat, mrStream, TypeSerializer::readMapMode(), tools::GenericTypeSerializer::readSize(), SvStream::ReadUChar(), SvStream::ReadUInt16(), SvStream::ReadUInt32(), SvStream::SeekRel(), SvStream::SetEndian(), Size::setHeight(), Size::setWidth(), SVM, and SvStream::Tell().

Referenced by GraphicDescriptor::ImpDetectSVM(), and vcl::peekGraphicFormat().

◆ checkTGA()

bool vcl::GraphicFormatDetector::checkTGA ( )

Definition at line 1332 of file GraphicFormatDetector.cxx.

References maExtension, maMetadata, GraphicMetadata::mnFormat, mnStreamLength, mnStreamPosition, mrStream, SvStream::ReadBytes(), SAL_N_ELEMENTS, SvStream::Seek(), SvStream::SeekRel(), STREAM_SEEK_TO_END, and TGA.

Referenced by GraphicDescriptor::ImpDetectTGA(), and vcl::peekGraphicFormat().

◆ checkTIF()

bool vcl::GraphicFormatDetector::checkTIF ( )

Definition at line 702 of file GraphicFormatDetector.cxx.

References DATA_SIZE, maMetadata, GraphicMetadata::maPixSize, mbExtendedInfo, GraphicMetadata::mnBitsPerPixel, GraphicMetadata::mnFormat, mnStreamPosition, mrStream, nCount, SvStream::ReadUChar(), SvStream::ReadUInt16(), SvStream::ReadUInt32(), SvStream::Seek(), SvStream::SeekRel(), SvStream::SetEndian(), Size::setHeight(), Size::setWidth(), SvStream::Tell(), and TIF.

Referenced by GraphicDescriptor::ImpDetectTIF(), and vcl::peekGraphicFormat().

◆ checkWEBP()

bool vcl::GraphicFormatDetector::checkWEBP ( )

Definition at line 1383 of file GraphicFormatDetector.cxx.

References maFirstBytes, maMetadata, GraphicMetadata::maPixSize, mbExtendedInfo, GraphicMetadata::mbIsAlpha, GraphicMetadata::mbIsTransparent, GraphicMetadata::mnBitsPerPixel, GraphicMetadata::mnFormat, mnStreamPosition, mrStream, ReadWebpInfo(), SvStream::Seek(), and WEBP.

Referenced by GraphicDescriptor::ImpDetectWEBP(), and vcl::peekGraphicFormat().

◆ checkWMF()

bool vcl::GraphicFormatDetector::checkWMF ( )

Definition at line 568 of file GraphicFormatDetector.cxx.

References checkAndUncompressBuffer(), maMetadata, mbWasCompressed, mnFirstLong, GraphicMetadata::mnFormat, mnStreamLength, WMF, WMF_EMF_CHECK_SIZE, and WMZ.

Referenced by GraphicDescriptor::ImpDetectWMF(), and vcl::peekGraphicFormat().

◆ checkXBM()

bool vcl::GraphicFormatDetector::checkXBM ( )

Definition at line 1245 of file GraphicFormatDetector.cxx.

References vcl::checkArrayForMatchingStrings(), maMetadata, GraphicMetadata::mnFormat, mnStreamLength, mnStreamPosition, mrStream, SvStream::ReadBytes(), SvStream::Seek(), and XBM.

Referenced by GraphicDescriptor::ImpDetectXBM(), and vcl::peekGraphicFormat().

◆ checkXPM()

bool vcl::GraphicFormatDetector::checkXPM ( )

Definition at line 1234 of file GraphicFormatDetector.cxx.

References maFirstBytes, maMetadata, vcl::matchArrayWithString(), GraphicMetadata::mnFormat, and XPM.

Referenced by GraphicDescriptor::ImpDetectXPM(), and vcl::peekGraphicFormat().

◆ detect()

bool vcl::GraphicFormatDetector::detect ( )

Definition at line 389 of file GraphicFormatDetector.cxx.

References SvStream::GetError(), SvStream::GetLockBytes(), i, maFirstBytes, mnFirstLong, mnSecondLong, mnStreamLength, mnStreamPosition, mrStream, SvStream::ReadBytes(), SvStream::remainingSize(), SvLockBytes::SetSynchronMode(), and SvStream::Tell().

Referenced by GraphicDescriptor::ImpDetectBMP(), GraphicDescriptor::ImpDetectDXF(), GraphicDescriptor::ImpDetectEMF(), GraphicDescriptor::ImpDetectEPS(), GraphicDescriptor::ImpDetectGIF(), GraphicDescriptor::ImpDetectMET(), GraphicDescriptor::ImpDetectPBM(), GraphicDescriptor::ImpDetectPCD(), GraphicDescriptor::ImpDetectPCT(), GraphicDescriptor::ImpDetectPCX(), GraphicDescriptor::ImpDetectPGM(), GraphicDescriptor::ImpDetectPNG(), GraphicDescriptor::ImpDetectPPM(), GraphicDescriptor::ImpDetectPSD(), GraphicDescriptor::ImpDetectRAS(), GraphicDescriptor::ImpDetectSVG(), GraphicDescriptor::ImpDetectSVM(), GraphicDescriptor::ImpDetectTGA(), GraphicDescriptor::ImpDetectTIF(), GraphicDescriptor::ImpDetectWEBP(), GraphicDescriptor::ImpDetectWMF(), GraphicDescriptor::ImpDetectXBM(), GraphicDescriptor::ImpDetectXPM(), and vcl::peekGraphicFormat().

◆ getMetadata()

const GraphicMetadata & vcl::GraphicFormatDetector::getMetadata ( )

Definition at line 1402 of file GraphicFormatDetector.cxx.

References maMetadata.

Referenced by GraphicDescriptor::ImpDetectBMP(), GraphicDescriptor::ImpDetectDXF(), GraphicDescriptor::ImpDetectEMF(), GraphicDescriptor::ImpDetectEPS(), GraphicDescriptor::ImpDetectGIF(), GraphicDescriptor::ImpDetectMET(), GraphicDescriptor::ImpDetectPBM(), GraphicDescriptor::ImpDetectPCD(), GraphicDescriptor::ImpDetectPCT(), GraphicDescriptor::ImpDetectPCX(), GraphicDescriptor::ImpDetectPGM(), GraphicDescriptor::ImpDetectPNG(), GraphicDescriptor::ImpDetectPPM(), GraphicDescriptor::ImpDetectPSD(), GraphicDescriptor::ImpDetectRAS(), GraphicDescriptor::ImpDetectSVG(), GraphicDescriptor::ImpDetectSVM(), GraphicDescriptor::ImpDetectTGA(), GraphicDescriptor::ImpDetectTIF(), GraphicDescriptor::ImpDetectWEBP(), GraphicDescriptor::ImpDetectWMF(), GraphicDescriptor::ImpDetectXBM(), GraphicDescriptor::ImpDetectXPM(), and vcl::peekGraphicFormat().

Member Data Documentation

◆ maExtension

OUString vcl::GraphicFormatDetector::maExtension

Definition at line 148 of file GraphicFormatDetector.hxx.

Referenced by checkTGA().

◆ maFirstBytes

std::vector<sal_uInt8> vcl::GraphicFormatDetector::maFirstBytes

Definition at line 150 of file GraphicFormatDetector.hxx.

Referenced by checkAndUncompressBuffer(), checkBMP(), checkDXF(), checkEPS(), checkGIF(), checkJPG(), checkMET(), checkMOV(), checkPDF(), checkWEBP(), checkXPM(), and detect().

◆ maMetadata

GraphicMetadata vcl::GraphicFormatDetector::maMetadata
private

Definition at line 204 of file GraphicFormatDetector.hxx.

Referenced by checkAPNG(), checkBMP(), checkDXF(), checkEMF(), checkEPS(), checkGIF(), checkJPG(), checkMET(), checkMOV(), checkPBM(), checkPCD(), checkPCT(), checkPCX(), checkPDF(), checkPGM(), checkPNG(), checkPPM(), checkPSD(), checkRAS(), checkSVG(), checkSVM(), checkTGA(), checkTIF(), checkWEBP(), checkWMF(), checkXBM(), checkXPM(), and getMetadata().

◆ mbExtendedInfo

bool vcl::GraphicFormatDetector::mbExtendedInfo
private

Definition at line 202 of file GraphicFormatDetector.hxx.

Referenced by checkBMP(), checkEMF(), checkGIF(), checkPNG(), checkPSD(), checkSVM(), checkTIF(), and checkWEBP().

◆ mbWasCompressed

bool vcl::GraphicFormatDetector::mbWasCompressed
private

Definition at line 203 of file GraphicFormatDetector.hxx.

Referenced by checkAndUncompressBuffer(), checkEMF(), checkSVG(), and checkWMF().

◆ mnFirstLong

sal_uInt32 vcl::GraphicFormatDetector::mnFirstLong

Definition at line 151 of file GraphicFormatDetector.hxx.

Referenced by checkAndUncompressBuffer(), checkEMF(), checkEPS(), checkGIF(), checkJPG(), checkPNG(), checkPSD(), checkRAS(), checkWMF(), and detect().

◆ mnSecondLong

sal_uInt32 vcl::GraphicFormatDetector::mnSecondLong

Definition at line 152 of file GraphicFormatDetector.hxx.

Referenced by checkAndUncompressBuffer(), checkPNG(), checkPSD(), and detect().

◆ mnStreamLength

sal_uInt64 vcl::GraphicFormatDetector::mnStreamLength

Definition at line 155 of file GraphicFormatDetector.hxx.

Referenced by checkEMF(), checkMET(), checkPCD(), checkPCT(), checkSVG(), checkTGA(), checkWMF(), checkXBM(), and detect().

◆ mnStreamPosition

sal_uInt64 vcl::GraphicFormatDetector::mnStreamPosition

Definition at line 154 of file GraphicFormatDetector.hxx.

Referenced by checkAndUncompressBuffer(), checkAPNG(), checkBMP(), checkMET(), checkPCD(), checkPCT(), checkPNG(), checkPSD(), checkSVG(), checkTGA(), checkTIF(), checkWEBP(), checkXBM(), and detect().

◆ mrStream

SvStream& vcl::GraphicFormatDetector::mrStream

Definition at line 147 of file GraphicFormatDetector.hxx.

Referenced by checkAndUncompressBuffer(), checkAPNG(), checkBMP(), checkMET(), checkPBM(), checkPCD(), checkPCT(), checkPCX(), checkPGM(), checkPNG(), checkPPM(), checkPSD(), checkSVG(), checkSVM(), checkTGA(), checkTIF(), checkWEBP(), checkXBM(), and detect().

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