SkJpegMetadataDecoder Class Reference

#include <SkJpegMetadataDecoder.h>

Inheritance diagram for SkJpegMetadataDecoder:

Classes
struct	Segment

Public Member Functions
	SkJpegMetadataDecoder ()
virtual	~SkJpegMetadataDecoder ()
	SkJpegMetadataDecoder (const SkJpegMetadataDecoder &)=delete
SkJpegMetadataDecoder &	operator= (const SkJpegMetadataDecoder &)=delete
virtual sk_sp< SkData >	getExifMetadata (bool copyData) const =0
virtual sk_sp< SkData >	getICCProfileData (bool copyData) const =0
virtual bool	mightHaveGainmapImage () const =0
virtual bool	findGainmapImage (sk_sp< SkData > baseImageData, sk_sp< SkData > &outGainmapImagedata, SkGainmapInfo &outGainmapInfo)=0

Static Public Member Functions
static std::unique_ptr< SkJpegMetadataDecoder >	Make (std::vector< Segment > headerSegments)

Detailed Description

An interface that can be used to extract metadata from an encoded JPEG file.

Definition at line 23 of file SkJpegMetadataDecoder.h.

Constructor & Destructor Documentation

SkJpegMetadataDecoder() [1/2]

SkJpegMetadataDecoder::SkJpegMetadataDecoder ( )

inline

Definition at line 25 of file SkJpegMetadataDecoder.h.

{}

~SkJpegMetadataDecoder()

virtual SkJpegMetadataDecoder::~SkJpegMetadataDecoder ( )

inlinevirtual

Definition at line 26 of file SkJpegMetadataDecoder.h.

{}

SkJpegMetadataDecoder() [2/2]

SkJpegMetadataDecoder::SkJpegMetadataDecoder ( const SkJpegMetadataDecoder &  )

delete

Member Function Documentation

findGainmapImage()

virtual bool SkJpegMetadataDecoder::findGainmapImage ( sk_sp< SkData >  baseImageData, sk_sp< SkData > &  outGainmapImagedata, SkGainmapInfo &  outGainmapInfo  )

pure virtual

Given a JPEG encoded image |baseImageData|, return in |outGainmapImageData| the JPEG encoded gainmap image and return in |outGainmapInfo| its gainmap rendering parameters. Return true if both output variables were successfully populated, otherwise return false.

Implemented in SkJpegMetadataDecoderImpl.

getExifMetadata()

virtual sk_sp< SkData > SkJpegMetadataDecoder::getExifMetadata ( bool  copyData ) const

pure virtual

Return the Exif data attached to the image (if any) and nullptr otherwise. If |copyData| is false, then the returned SkData may directly reference the data provided when this object was created.

Implemented in SkJpegMetadataDecoderImpl.

getICCProfileData()

virtual sk_sp< SkData > SkJpegMetadataDecoder::getICCProfileData ( bool  copyData ) const

pure virtual

Return the ICC profile of the image if any, and nullptr otherwise. If |copyData| is false, then the returned SkData may directly reference the data provided when this object was created.

Implemented in SkJpegMetadataDecoderImpl.

Make()

std::unique_ptr< SkJpegMetadataDecoder > SkJpegMetadataDecoder::Make ( std::vector< Segment >  headerSegments )

static

Create metadata for the specified segments from a JPEG file's header (defined as all segments before the first StartOfScan). This may return nullptr.

Definition at line 1380 of file SkJpegCodec.cpp.

                                                                                            {
    SkJpegMarkerList markerList;
    for (const auto& segment : segments) {
        markerList.emplace_back(segment.fMarker, segment.fData);
    }
    return std::make_unique<SkJpegMetadataDecoderImpl>(std::move(markerList));
}

mightHaveGainmapImage()

virtual bool SkJpegMetadataDecoder::mightHaveGainmapImage ( ) const

pure virtual

Return true if there is a possibility that this image contains a gainmap image.

Implemented in SkJpegMetadataDecoderImpl.

operator=()

SkJpegMetadataDecoder & SkJpegMetadataDecoder::operator= ( const SkJpegMetadataDecoder &  )

delete

---

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

• third_party/skia/include/private/SkJpegMetadataDecoder.h
• third_party/skia/src/codec/SkJpegCodec.cpp