#include <SkScalingCodec.h>

Inheritance diagram for SkScalingCodec:

Protected Member Functions
	SkScalingCodec (SkEncodedInfo &&info, XformFormat srcFormat, std::unique_ptr< SkStream > stream, SkEncodedOrigin origin=kTopLeft_SkEncodedOrigin)

SkISize	onGetScaledDimensions (float desiredScale) const override

bool	onDimensionsSupported (const SkISize &requested) override

Protected Member Functions inherited from SkCodec
const SkEncodedInfo &	getEncodedInfo () const

	SkCodec (SkEncodedInfo &&, XformFormat srcFormat, std::unique_ptr< SkStream >, SkEncodedOrigin=kTopLeft_SkEncodedOrigin)

void	setSrcXformFormat (XformFormat pixelFormat)

XformFormat	getSrcXformFormat () const

virtual bool	onGetGainmapInfo (SkGainmapInfo , std::unique_ptr< SkStream > )

virtual SkEncodedImageFormat	onGetEncodedFormat () const =0

virtual Result	onGetPixels (const SkImageInfo &info, void pixels, size_t rowBytes, const Options &, int rowsDecoded)=0

virtual bool	onQueryYUVAInfo (const SkYUVAPixmapInfo::SupportedDataTypes &, SkYUVAPixmapInfo *) const

virtual Result	onGetYUVAPlanes (const SkYUVAPixmaps &)

virtual bool	onGetValidSubset (SkIRect *) const

bool	rewindIfNeeded ()

virtual bool	onRewind ()

SkStream *	stream ()

virtual SkScanlineOrder	onGetScanlineOrder () const

const SkImageInfo &	dstInfo () const

const Options &	options () const

int	currScanline () const

virtual int	onOutputScanline (int inputScanline) const

virtual bool	conversionSupported (const SkImageInfo &dst, bool srcIsOpaque, bool needsColorXform)

virtual bool	usesColorXform () const

void	applyColorXform (void dst, const void src, int count) const

bool	colorXform () const

bool	xformOnDecode () const

virtual int	onGetFrameCount ()

virtual bool	onGetFrameInfo (int, FrameInfo *) const

virtual int	onGetRepetitionCount ()

Additional Inherited Members
Public Types inherited from SkCodec
enum	Result { kSuccess , kIncompleteInput , kErrorInInput , kInvalidConversion , kInvalidScale , kInvalidParameters , kInvalidInput , kCouldNotRewind , kInternalError , kUnimplemented }

enum class	SelectionPolicy { kPreferStillImage , kPreferAnimation }

enum	ZeroInitialized { kYes_ZeroInitialized , kNo_ZeroInitialized }

enum	SkScanlineOrder { kTopDown_SkScanlineOrder , kBottomUp_SkScanlineOrder }

Public Member Functions inherited from SkCodec
virtual	~SkCodec ()

SkImageInfo	getInfo () const

SkISize	dimensions () const

SkIRect	bounds () const

const skcms_ICCProfile *	getICCProfile () const

SkEncodedOrigin	getOrigin () const

SkISize	getScaledDimensions (float desiredScale) const

bool	getValidSubset (SkIRect *desiredSubset) const

SkEncodedImageFormat	getEncodedFormat () const

virtual std::unique_ptr< SkStream >	getEncodedData () const

Result	getPixels (const SkImageInfo &info, void pixels, size_t rowBytes, const Options )

Result	getPixels (const SkImageInfo &info, void *pixels, size_t rowBytes)

Result	getPixels (const SkPixmap &pm, const Options *opts=nullptr)

std::tuple< sk_sp< SkImage >, SkCodec::Result >	getImage (const SkImageInfo &info, const Options *opts=nullptr)

std::tuple< sk_sp< SkImage >, SkCodec::Result >	getImage ()

bool	queryYUVAInfo (const SkYUVAPixmapInfo::SupportedDataTypes &supportedDataTypes, SkYUVAPixmapInfo *yuvaPixmapInfo) const

Result	getYUVAPlanes (const SkYUVAPixmaps &yuvaPixmaps)

Result	startIncrementalDecode (const SkImageInfo &dstInfo, void dst, size_t rowBytes, const Options )

Result	startIncrementalDecode (const SkImageInfo &dstInfo, void *dst, size_t rowBytes)

Result	incrementalDecode (int *rowsDecoded=nullptr)

Result	startScanlineDecode (const SkImageInfo &dstInfo, const Options *options)

Result	startScanlineDecode (const SkImageInfo &dstInfo)

int	getScanlines (void *dst, int countLines, size_t rowBytes)

bool	skipScanlines (int countLines)

SkScanlineOrder	getScanlineOrder () const

int	nextScanline () const

int	outputScanline (int inputScanline) const

int	getFrameCount ()

bool	getFrameInfo (int index, FrameInfo *info) const

std::vector< FrameInfo >	getFrameInfo ()

int	getRepetitionCount ()

Static Public Member Functions inherited from SkCodec
static constexpr size_t	MinBufferedBytesNeeded ()

static const char *	ResultToString (Result)

static std::unique_ptr< SkCodec >	MakeFromStream (std::unique_ptr< SkStream >, SkSpan< const SkCodecs::Decoder > decoders, Result =nullptr, SkPngChunkReader =nullptr, SelectionPolicy selectionPolicy=SelectionPolicy::kPreferStillImage)

static std::unique_ptr< SkCodec >	MakeFromStream (std::unique_ptr< SkStream >, Result =nullptr, SkPngChunkReader =nullptr, SelectionPolicy selectionPolicy=SelectionPolicy::kPreferStillImage)

static std::unique_ptr< SkCodec >	MakeFromData (sk_sp< SkData >, SkSpan< const SkCodecs::Decoder > decoders, SkPngChunkReader *=nullptr)

static std::unique_ptr< SkCodec >	MakeFromData (sk_sp< SkData >, SkPngChunkReader *=nullptr)

static void	Register (bool(peek)(const void , size_t), std::unique_ptr< SkCodec >(make)(std::unique_ptr< SkStream >, SkCodec::Result ))

Static Public Attributes inherited from SkCodec
static constexpr int	kNoFrame = -1

static constexpr int	kRepetitionCountInfinite = -1

Protected Types inherited from SkCodec
using	XformFormat = skcms_PixelFormat

Detailed Description

Definition at line 22 of file SkScalingCodec.h.

Constructor & Destructor Documentation

◆ SkScalingCodec()

SkScalingCodec::SkScalingCodec	(	SkEncodedInfo &&	info,
		XformFormat	srcFormat,
		std::unique_ptr< SkStream >	stream,
		SkEncodedOrigin	origin = `kTopLeft_SkEncodedOrigin`
	)

inlineprotected

Definition at line 24 of file SkScalingCodec.h.

26 : SkCodec(std::move(info), srcFormat, std::move(stream), origin) {}

info

static void info(const char *fmt,...) SK_PRINTF_LIKE(1

Definition DM.cpp:213

SkCodec

Definition SkCodec.h:58

SkCodec::stream

SkStream * stream()

Definition SkCodec.h:865

Member Function Documentation

◆ onDimensionsSupported()

bool SkScalingCodec::onDimensionsSupported ( const SkISize & )

inlineoverrideprotectedvirtual

Subclasses should override if they support dimensions other than the srcInfo's.

Reimplemented from SkCodec.

Definition at line 37 of file SkScalingCodec.h.

                                                                  {
        SkISize dim = this->dimensions();
        int w = requested.width();
        int h = requested.height();
        return 1 <= w && w <= dim.width() && 1 <= h && h <= dim.height();
    }

◆ onGetScaledDimensions()

SkISize SkScalingCodec::onGetScaledDimensions ( float desiredScale ) const

inlineoverrideprotectedvirtual

Reimplemented from SkCodec.

Definition at line 28 of file SkScalingCodec.h.

                                                                     {
        SkISize dim = this->dimensions();
        // SkCodec treats zero dimensional images as errors, so the minimum size
        // that we will recommend is 1x1.
        dim.fWidth = std::max(1, SkScalarRoundToInt(desiredScale * dim.fWidth));
        dim.fHeight = std::max(1, SkScalarRoundToInt(desiredScale * dim.fHeight));
        return dim;
    }

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

third_party/skia/src/codec/SkScalingCodec.h