Inheritance diagram for SkMemoryStream:

Public Member Functions
	SkMemoryStream (size_t length)
	We allocate (and free) the memory. More...

	SkMemoryStream (const void *data, size_t length, bool copyData=false)
	If copyData is true, the stream makes a private copy of the data. More...

	SkMemoryStream (sk_sp< SkData >)
	Creates the stream to read from the specified data.

virtual void	setMemory (const void *data, size_t length, bool copyData=false)
	Resets the stream to the specified data and length, just like the constructor. More...

void	setMemoryOwned (const void *data, size_t length)
	Replace any memory buffer with the specified buffer. More...

sk_sp< SkData >	asData () const

void	setData (sk_sp< SkData >)

void	skipToAlign4 ()

const void *	getAtPos ()

size_t	read (void *buffer, size_t size) override
	Reads or skips size number of bytes. More...

bool	isAtEnd () const override
	Returns true when all the bytes in the stream have been read. More...

size_t	peek (void *buffer, size_t size) const override
	Attempt to peek at size bytes. More...

bool	rewind () override
	Rewinds to the beginning of the stream. More...

SkMemoryStream *	duplicate () const override
	Duplicates this stream. More...

size_t	getPosition () const override
	Returns the current position in the stream. More...

bool	seek (size_t position) override
	Seeks to an absolute position in the stream. More...

bool	move (long offset) override
	Seeks to an relative offset in the stream. More...

SkMemoryStream *	fork () const override
	Duplicates this stream. More...

size_t	getLength () const override
	Returns the total length of the stream. More...

const void *	getMemoryBase () override
	Returns the starting address for the data. More...

Public Member Functions inherited from SkStreamAsset
bool	hasLength () const override
	Returns true if this stream can report it's total length. More...

Public Member Functions inherited from SkStreamSeekable
bool	hasPosition () const override
	Returns true if this stream can report it's current position. More...

Public Member Functions inherited from SkStream
size_t	skip (size_t size)
	Skip size number of bytes. More...

int8_t	readS8 ()

int16_t	readS16 ()

int32_t	readS32 ()

uint8_t	readU8 ()

uint16_t	readU16 ()

uint32_t	readU32 ()

bool	readBool ()

SkScalar	readScalar ()

size_t	readPackedUInt ()

Private Types
typedef SkStreamMemory	INHERITED

Private Attributes
sk_sp< SkData >	fData

size_t	fOffset

Additional Inherited Members
Static Public Member Functions inherited from SkStream
static std::unique_ptr < SkStreamAsset >	MakeFromFile (const char path[])
	Attempts to open the specified file as a stream, returns nullptr on failure.

Constructor & Destructor Documentation

SkMemoryStream::SkMemoryStream ( size_t length )

We allocate (and free) the memory.

Write to it via getMemoryBase()

SkMemoryStream::SkMemoryStream	(	const void *	data,
		size_t	length,
		bool	copyData = `false`
	)

If copyData is true, the stream makes a private copy of the data.

Member Function Documentation

SkMemoryStream* SkMemoryStream::duplicate ( ) const

overridevirtual

Duplicates this stream.

If this cannot be done, returns NULL. The returned stream will be positioned at the beginning of its data.

Implements SkStreamMemory.

SkMemoryStream* SkMemoryStream::fork ( ) const

overridevirtual

Duplicates this stream.

If this cannot be done, returns NULL. The returned stream will be positioned the same as this stream.

Implements SkStreamMemory.

size_t SkMemoryStream::getLength ( ) const

overridevirtual

Returns the total length of the stream.

If this cannot be done, returns 0.

Implements SkStreamAsset.

const void* SkMemoryStream::getMemoryBase ( )

overridevirtual

Returns the starting address for the data.

If this cannot be done, returns NULL.

Implements SkStreamMemory.

size_t SkMemoryStream::getPosition ( ) const

overridevirtual

Returns the current position in the stream.

If this cannot be done, returns 0.

Implements SkStreamSeekable.

bool SkMemoryStream::isAtEnd ( ) const

overridevirtual

Returns true when all the bytes in the stream have been read.

This may return true early (when there are no more bytes to be read) or late (after the first unsuccessful read).

Implements SkStream.

bool SkMemoryStream::move ( long )

overridevirtual

Seeks to an relative offset in the stream.

If this cannot be done, returns false. If an attempt is made to move to a position outside the stream, the position will be set to the closest point within the stream (beginning or end).

Implements SkStreamSeekable.

size_t SkMemoryStream::peek	(	void *	,
		size_t
	)		const

overridevirtual

Attempt to peek at size bytes.

If this stream supports peeking, copy min(size, peekable bytes) into buffer, and return the number of bytes copied. If the stream does not support peeking, or cannot peek any bytes, return 0 and leave buffer unchanged. The stream is guaranteed to be in the same visible state after this call, regardless of success or failure.

Parameters

buffer	Must not be NULL, and must be at least size bytes. Destination to copy bytes.
size	Number of bytes to copy.

Returns: The number of bytes peeked/copied.

Reimplemented from SkStream.

size_t SkMemoryStream::read	(	void *	buffer,
		size_t	size
	)

overridevirtual

Reads or skips size number of bytes.

If buffer == NULL, skip size bytes, return how many were skipped. If buffer != NULL, copy size bytes into buffer, return how many were copied.

Parameters

buffer	when NULL skip size bytes, otherwise copy size bytes into buffer
size	the number of bytes to skip or copy

Returns: the number of bytes actually read.

Implements SkStream.

bool SkMemoryStream::rewind ( )

overridevirtual

Rewinds to the beginning of the stream.

Returns true if the stream is known to be at the beginning after this call returns.

Implements SkStreamRewindable.

bool SkMemoryStream::seek ( size_t )

overridevirtual

Seeks to an absolute position in the stream.

If this cannot be done, returns false. If an attempt is made to seek past the end of the stream, the position will be set to the end of the stream.

Implements SkStreamSeekable.

virtual void SkMemoryStream::setMemory	(	const void *	data,
		size_t	length,
		bool	copyData = `false`
	)

virtual

Resets the stream to the specified data and length, just like the constructor.

if copyData is true, the stream makes a private copy of the data

void SkMemoryStream::setMemoryOwned	(	const void *	data,
		size_t	length
	)

Replace any memory buffer with the specified buffer.

The caller must have allocated data with sk_malloc or sk_realloc, since it will be freed with sk_free.

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

include/core/SkStream.h

Public Member Functions

Private Types

Private Attributes

Additional Inherited Members

Constructor & Destructor Documentation

Member Function Documentation