SkDeflate.cpp File Reference

#include "src/pdf/SkDeflate.h"
#include "include/core/SkData.h"
#include "include/private/base/SkMalloc.h"
#include "include/private/base/SkTo.h"
#include "src/core/SkTraceEvent.h"
#include "zlib.h"
#include <algorithm>

Go to the source code of this file.

Classes
struct	SkDeflateWStream::Impl

Macros
#define	SKDEFLATEWSTREAM_INPUT_BUFFER_SIZE   4096
#define	SKDEFLATEWSTREAM_OUTPUT_BUFFER_SIZE   4224

Functions
static void	do_deflate (int flush, z_stream *zStream, SkWStream *out, unsigned char *inBuffer, size_t inBufferSize)

Macro Definition Documentation

SKDEFLATEWSTREAM_INPUT_BUFFER_SIZE

#define SKDEFLATEWSTREAM_INPUT_BUFFER_SIZE   4096

Definition at line 31 of file SkDeflate.cpp.

SKDEFLATEWSTREAM_OUTPUT_BUFFER_SIZE

#define SKDEFLATEWSTREAM_OUTPUT_BUFFER_SIZE   4224

Definition at line 32 of file SkDeflate.cpp.

Function Documentation

do_deflate()

static void do_deflate ( int  flush, z_stream *  zStream, SkWStream *  out, unsigned char *  inBuffer, size_t  inBufferSize  )

static

Definition at line 37 of file SkDeflate.cpp.

                                            {
    zStream->next_in = inBuffer;
    zStream->avail_in = SkToInt(inBufferSize);
    unsigned char outBuffer[SKDEFLATEWSTREAM_OUTPUT_BUFFER_SIZE];
    SkDEBUGCODE(int returnValue;)
    do {
        zStream->next_out = outBuffer;
        zStream->avail_out = sizeof(outBuffer);
        SkDEBUGCODE(returnValue =) deflate(zStream, flush);
        SkASSERT(!zStream->msg);
 
        out->write(outBuffer, sizeof(outBuffer) - zStream->avail_out);
    } while (zStream->avail_in || !zStream->avail_out);
    SkASSERT(flush == Z_FINISH
                 ? returnValue == Z_STREAM_END
                 : returnValue == Z_OK);
}