Inheritance diagram for SkWuffsCodec:

Public Member Functions
	SkWuffsCodec (SkEncodedInfo &&encodedInfo, std::unique_ptr< SkStream > stream, bool canSeek, std::unique_ptr< wuffs_gif__decoder, decltype(&sk_free)> dec, std::unique_ptr< uint8_t, decltype(&sk_free)> workbuf_ptr, size_t workbuf_len, wuffs_base__image_config imgcfg, wuffs_base__io_buffer iobuf)

const SkWuffsFrame *	frame (int i) const

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

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 ()

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 }

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

Protected Member Functions inherited from SkScalingCodec
	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 SkISize	onGetScaledDimensions (float) const

virtual bool	onDimensionsSupported (const SkISize &)

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 ()

Detailed Description

Definition at line 237 of file SkWuffsCodec.cpp.

Constructor & Destructor Documentation

◆ SkWuffsCodec()

SkWuffsCodec::SkWuffsCodec	(	SkEncodedInfo &&	encodedInfo,
		std::unique_ptr< SkStream >	stream,
		bool	canSeek,
		std::unique_ptr< wuffs_gif__decoder, decltype(&sk_free)>	dec,
		std::unique_ptr< uint8_t, decltype(&sk_free)>	workbuf_ptr,
		size_t	workbuf_len,
		wuffs_base__image_config	imgcfg,
		wuffs_base__io_buffer	iobuf
	)

Definition at line 380 of file SkWuffsCodec.cpp.

    : INHERITED(std::move(encodedInfo),
                skcms_PixelFormat_RGBA_8888,
                // Pass a nullptr SkStream to the SkCodec constructor. We
                // manage the stream ourselves, as the default SkCodec behavior
                // is too trigger-happy on rewinding the stream.
                nullptr),
      fFrameHolder(),
      fPrivStream(std::move(stream)),
      fWorkbufPtr(std::move(workbuf_ptr)),
      fWorkbufLen(workbuf_len),
      fDecoder(std::move(dec)),
      fFirstFrameIOPosition(imgcfg.first_frame_io_position()),
      fFrameConfig(wuffs_base__null_frame_config()),
      fPixelConfig(imgcfg.pixcfg),
      fPixelBuffer(wuffs_base__null_pixel_buffer()),
      fIOBuffer(wuffs_base__empty_io_buffer()),
      fIncrDecDst(nullptr),
      fIncrDecRowBytes(0),
      fIncrDecPixelBlend(WUFFS_BASE__PIXEL_BLEND__SRC),
      fIncrDecOnePass(false),
      fFirstCallToIncrementalDecode(false),
      fTwoPassPixbufPtr(nullptr, &sk_free),
      fTwoPassPixbufLen(0),
      fNumFullyReceivedFrames(0),
      fFramesComplete(false),
      fDecoderIsSuspended(false),
      fCanSeek(canSeek) {
    fFrameHolder.init(this, imgcfg.pixcfg.width(), imgcfg.pixcfg.height());
 
    // Initialize fIOBuffer's fields, copying any outstanding data from iobuf to
    // fIOBuffer, as iobuf's backing array may not be valid for the lifetime of
    // this SkWuffsCodec object, but fIOBuffer's backing array (fBuffer) is.
    SkASSERT(iobuf.data.len == SK_WUFFS_CODEC_BUFFER_SIZE);
    memmove(fBuffer, iobuf.data.ptr, iobuf.meta.wi);
    fIOBuffer.data = wuffs_base__make_slice_u8(fBuffer, SK_WUFFS_CODEC_BUFFER_SIZE);
    fIOBuffer.meta = iobuf.meta;
}

Member Function Documentation

◆ frame()

const SkWuffsFrame * SkWuffsCodec::frame ( int i ) const

Definition at line 426 of file SkWuffsCodec.cpp.

                                                   {
    if ((0 <= i) && (static_cast<size_t>(i) < fFrames.size())) {
        return &fFrames[i];
    }
    return nullptr;
}

◆ getEncodedData()

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

overridevirtual

Return the underlying encoded data stream. This may be nullptr if the original stream could not be duplicated.

Reimplemented from SkCodec.

Definition at line 970 of file SkWuffsCodec.cpp.

                                                           {
    SkASSERT(fPrivStream);
    return fPrivStream->duplicate();
}

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

third_party/skia/src/codec/SkWuffsCodec.cpp