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#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
#include "zlib.h"
int ReadFileMemory(const char* filename,long* plFileSize,void** pFilePtr)
{
FILE* stream;
void* ptr;
int retVal=1;
stream=fopen(filename, "rb");
if (stream==NULL)
return 0;
fseek(stream,0,SEEK_END);
*plFileSize=ftell(stream);
fseek(stream,0,SEEK_SET);
ptr=malloc((*plFileSize)+1);
if (ptr==NULL)
retVal=0;
else
{
if (fread(ptr, 1, *plFileSize,stream) != (*plFileSize))
retVal=0;
}
fclose(stream);
*pFilePtr=ptr;
return retVal;
}
int main(int argc, char *argv[])
{
int BlockSizeCompress=0x8000;
int BlockSizeUncompress=0x8000;
int cprLevel=Z_DEFAULT_COMPRESSION ;
long lFileSize;
unsigned char* FilePtr;
long lBufferSizeCpr;
long lBufferSizeUncpr;
long lCompressedSize=0;
unsigned char* CprPtr;
unsigned char* UncprPtr;
long lSizeCpr,lSizeUncpr;
DWORD dwGetTick;
if (argc<=1)
{
printf("run TestZlib <File> [BlockSizeCompress] [BlockSizeUncompress] [compres. level]\n");
return 0;
}
if (ReadFileMemory(argv[1],&lFileSize,&FilePtr)==0)
{
printf("error reading %s\n",argv[1]);
return 1;
}
else printf("file %s read, %u bytes\n",argv[1],lFileSize);
if (argc>=3)
BlockSizeCompress=atol(argv[2]);
if (argc>=4)
BlockSizeUncompress=atol(argv[3]);
if (argc>=5)
cprLevel=(int)atol(argv[4]);
lBufferSizeCpr = lFileSize + (lFileSize/0x10) + 0x200;
lBufferSizeUncpr = lBufferSizeCpr;
CprPtr=(unsigned char*)malloc(lBufferSizeCpr + BlockSizeCompress);
UncprPtr=(unsigned char*)malloc(lBufferSizeUncpr + BlockSizeUncompress);
dwGetTick=GetTickCount();
{
z_stream zcpr;
int ret=Z_OK;
long lOrigToDo = lFileSize;
long lOrigDone = 0;
int step=0;
memset(&zcpr,0,sizeof(z_stream));
deflateInit(&zcpr,cprLevel);
zcpr.next_in = FilePtr;
zcpr.next_out = CprPtr;
do
{
long all_read_before = zcpr.total_in;
zcpr.avail_in = min(lOrigToDo,BlockSizeCompress);
zcpr.avail_out = BlockSizeCompress;
ret=deflate(&zcpr,(zcpr.avail_in==lOrigToDo) ? Z_FINISH : Z_SYNC_FLUSH);
lOrigDone += (zcpr.total_in-all_read_before);
lOrigToDo -= (zcpr.total_in-all_read_before);
step++;
} while (ret==Z_OK);
lSizeCpr=zcpr.total_out;
deflateEnd(&zcpr);
dwGetTick=GetTickCount()-dwGetTick;
printf("total compress size = %u, in %u step\n",lSizeCpr,step);
printf("time = %u msec = %f sec\n\n",dwGetTick,dwGetTick/(double)1000.);
}
dwGetTick=GetTickCount();
{
z_stream zcpr;
int ret=Z_OK;
long lOrigToDo = lSizeCpr;
long lOrigDone = 0;
int step=0;
memset(&zcpr,0,sizeof(z_stream));
inflateInit(&zcpr);
zcpr.next_in = CprPtr;
zcpr.next_out = UncprPtr;
do
{
long all_read_before = zcpr.total_in;
zcpr.avail_in = min(lOrigToDo,BlockSizeUncompress);
zcpr.avail_out = BlockSizeUncompress;
ret=inflate(&zcpr,Z_SYNC_FLUSH);
lOrigDone += (zcpr.total_in-all_read_before);
lOrigToDo -= (zcpr.total_in-all_read_before);
step++;
} while (ret==Z_OK);
lSizeUncpr=zcpr.total_out;
inflateEnd(&zcpr);
dwGetTick=GetTickCount()-dwGetTick;
printf("total uncompress size = %u, in %u step\n",lSizeUncpr,step);
printf("time = %u msec = %f sec\n\n",dwGetTick,dwGetTick/(double)1000.);
}
if (lSizeUncpr==lFileSize)
{
if (memcmp(FilePtr,UncprPtr,lFileSize)==0)
printf("compare ok\n");
}
return 0;
}
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