LimitedRewindingStream Class Reference

Inheritance diagram for LimitedRewindingStream:

Public Member Functions
size_t	read (void *buffer, size_t size) override
bool	isAtEnd () const override
bool	rewind () 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

Static Public Member Functions
static std::unique_ptr< SkStream >	Make (const char path[], size_t limit)
Static Public Member Functions inherited from SkStream
static std::unique_ptr< SkStreamAsset >	MakeFromFile (const char path[])

Detailed Description

Definition at line 1297 of file CodecTest.cpp.

Member Function Documentation

isAtEnd()

bool LimitedRewindingStream::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 1313 of file CodecTest.cpp.

                                  {
        return fStream->isAtEnd();
    }

Make()

static std::unique_ptr< SkStream > LimitedRewindingStream::Make ( const char  path[], size_t  limit  )

inlinestatic

Definition at line 1299 of file CodecTest.cpp.

                                                                         {
        auto stream = GetResourceAsStream(path);
        if (!stream) {
            return nullptr;
        }
        return std::unique_ptr<SkStream>(new LimitedRewindingStream(std::move(stream), limit));
    }

read()

size_t LimitedRewindingStream::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 1307 of file CodecTest.cpp.

                                                    {
        const size_t bytes = fStream->read(buffer, size);
        fPosition += bytes;
        return bytes;
    }

rewind()

bool LimitedRewindingStream::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 1317 of file CodecTest.cpp.

                           {
        if (fPosition <= fLimit && fStream->rewind()) {
            fPosition = 0;
            return true;
        }
 
        return false;
    }

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

• third_party/skia/tests/CodecTest.cpp