LimitedPeekingMemStream Class Reference

Inheritance diagram for LimitedPeekingMemStream:

Public Member Functions
	LimitedPeekingMemStream (sk_sp< SkData > data, size_t limit)
size_t	peek (void *buf, size_t bytes) const override
size_t	read (void *buf, size_t bytes) override
bool	rewind () override
bool	isAtEnd () const override
Public Member Functions inherited from SkStream
virtual	~SkStream ()
	SkStream ()
virtual size_t	read (void *buffer, size_t size)=0
size_t	skip (size_t size)
virtual size_t	peek (void *, size_t) const
virtual bool	isAtEnd () const =0
bool	readS8 (int8_t *)
bool	readS16 (int16_t *)
bool	readS32 (int32_t *)
bool	readU8 (uint8_t *i)
bool	readU16 (uint16_t *i)
bool	readU32 (uint32_t *i)
bool	readBool (bool *b)
bool	readScalar (SkScalar *)
bool	readPackedUInt (size_t *)
virtual bool	rewind ()
std::unique_ptr< SkStream >	duplicate () const
std::unique_ptr< SkStream >	fork () const
virtual bool	hasPosition () const
virtual size_t	getPosition () const
virtual bool	seek (size_t)
virtual bool	move (long)
virtual bool	hasLength () const
virtual size_t	getLength () const
virtual const void *	getMemoryBase ()
virtual sk_sp< SkData >	getData () const

Additional Inherited Members
Static Public Member Functions inherited from SkStream
static std::unique_ptr< SkStreamAsset >	MakeFromFile (const char path[])

Detailed Description

Definition at line 905 of file CodecTest.cpp.

Constructor & Destructor Documentation

LimitedPeekingMemStream()

LimitedPeekingMemStream::LimitedPeekingMemStream ( sk_sp< SkData >  data, size_t  limit  )

inline

Definition at line 907 of file CodecTest.cpp.

        : fStream(std::move(data))
        , fLimit(limit) {}

Member Function Documentation

isAtEnd()

bool LimitedPeekingMemStream::isAtEnd ( ) const

inlineoverridevirtual

Returns true when all the bytes in the stream have been read. As SkStream represents synchronous I/O, isAtEnd returns false when the final stream length isn't known yet, even when all the bytes available so far 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.

Definition at line 920 of file CodecTest.cpp.

                                  {
        return fStream.isAtEnd();
    }

peek()

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

inlineoverridevirtual

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.

Definition at line 911 of file CodecTest.cpp.

                                                        {
        return fStream.peek(buf, std::min(bytes, fLimit));
    }

read()

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

inlineoverridevirtual

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.

Definition at line 914 of file CodecTest.cpp.

                                                  {
        return fStream.read(buf, bytes);
    }

rewind()

bool LimitedPeekingMemStream::rewind ( )

inlineoverridevirtual

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

Reimplemented from SkStream.

Definition at line 917 of file CodecTest.cpp.

                           {
        return fStream.rewind();
    }

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

• third_party/skia/tests/CodecTest.cpp