SkPngEncoderImpl Class Reference

#include <SkPngEncoderImpl.h>

Inheritance diagram for SkPngEncoderImpl:

Public Member Functions
	SkPngEncoderImpl (std::unique_ptr< SkPngEncoderMgr >, const SkPixmap &src)
	~SkPngEncoderImpl () override
Public Member Functions inherited from SkEncoder
bool	encodeRows (int numRows)
virtual	~SkEncoder ()

Protected Member Functions
bool	onEncodeRows (int numRows) override
Protected Member Functions inherited from SkEncoder
	SkEncoder (const SkPixmap &src, size_t storageBytes)

Protected Attributes
std::unique_ptr< SkPngEncoderMgr >	fEncoderMgr
Protected Attributes inherited from SkEncoder
const SkPixmap &	fSrc
int	fCurrRow
skia_private::AutoTMalloc< uint8_t >	fStorage

Detailed Description

Definition at line 18 of file SkPngEncoderImpl.h.

Constructor & Destructor Documentation

SkPngEncoderImpl()

SkPngEncoderImpl::SkPngEncoderImpl	(	std::unique_ptr< SkPngEncoderMgr >	encoderMgr,
		const SkPixmap &	src
	)

Definition at line 437 of file SkPngEncoderImpl.cpp.

        : SkEncoder(src, encoderMgr->pngBytesPerPixel() * src.width())
        , fEncoderMgr(std::move(encoderMgr)) {}

~SkPngEncoderImpl()

SkPngEncoderImpl::~SkPngEncoderImpl ( )

override

Definition at line 441 of file SkPngEncoderImpl.cpp.

{}

Member Function Documentation

onEncodeRows()

bool SkPngEncoderImpl::onEncodeRows ( int  numRows )

overrideprotectedvirtual

Implements SkEncoder.

Definition at line 443 of file SkPngEncoderImpl.cpp.

                                               {
    if (setjmp(png_jmpbuf(fEncoderMgr->pngPtr()))) {
        return false;
    }
 
    const void* srcRow = fSrc.addr(0, fCurrRow);
    for (int y = 0; y < numRows; y++) {
        sk_msan_assert_initialized(srcRow,
                                   (const uint8_t*)srcRow + (fSrc.width() << fSrc.shiftPerPixel()));
        fEncoderMgr->proc()((char*)fStorage.get(),
                            (const char*)srcRow,
                            fSrc.width(),
                            SkColorTypeBytesPerPixel(fSrc.colorType()));
 
        png_bytep rowPtr = (png_bytep)fStorage.get();
        png_write_rows(fEncoderMgr->pngPtr(), &rowPtr, 1);
        srcRow = SkTAddOffset<const void>(srcRow, fSrc.rowBytes());
    }
 
    fCurrRow += numRows;
    if (fCurrRow == fSrc.height()) {
        png_write_end(fEncoderMgr->pngPtr(), fEncoderMgr->infoPtr());
    }
 
    return true;
}

Member Data Documentation

fEncoderMgr

std::unique_ptr<SkPngEncoderMgr> SkPngEncoderImpl::fEncoderMgr

protected

Definition at line 27 of file SkPngEncoderImpl.h.

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

• third_party/skia/src/encode/SkPngEncoderImpl.h
• third_party/skia/src/encode/SkPngEncoderImpl.cpp