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GLAST/LAT > DAQ and FSW > FSW > Doxygen Index > ZLIB / V2-1-0

Constituent: zlib_file_inflate     Tag: rad750

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ZLIB_file_inflate.c File Reference

File de-compression utilities using the ZLIB decoder. More...

#include "stdlib.h"
#include "unistd.h"
#include "fcntl.h"
#include "errno.h"
#include "sys/types.h"
#include "sys/stat.h"
#include "ZLIB/zlib.h"
#include "ZLIB/ZLIB_file_inflate.h"
#include "PBS/BSWP.h"
#include "PBS/MBA.h"
#include "MSG/MSG_pubdefs.h"

Include dependency graph for ZLIB_file_inflate.c:

Functions
unsigned int	ZLIB_fileInflateError (int errCode, const char *func, const char *msg)
void *	ZLIB_fileInflateAlloc (void *opaque, unsigned int numItems, unsigned int size)
void	ZLIB_fileInflateFree (void *opaque, void *address)
unsigned int	ZLIB_fileInflateToFile (int in, int out, unsigned int bufSize)
	Inflate a file into an output file.
unsigned int	ZLIB_fileInflateToMem (int in, void *out, unsigned int outSize, unsigned int bufSize)
	Inflate a memory region into an output file.
unsigned int	ZLIB_fileInflateSizeof (int file, unsigned int *size)
	Determine amount of memory for file inflation.

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Detailed Description

File de-compression utilities using the ZLIB decoder.

Author:

D.L. Wood

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Function Documentation

void * ZLIB_fileInflateAlloc (  void *  opaque, unsigned int  numItems, unsigned int  size )  [static]

Memory allocation callback for ZLIB stream. Parameters: opaque  Ignored. numItems  The number of items to allocate. size  The size in bytes of each item. Returns: A pointer to the allocated memory, or NULL on failure.

unsigned int ZLIB_fileInflateError (  int  errCode, const char *  func, const char *  msg )  [static]

This function translates ZLIB native error codes into MSG codes. Parameters: errCode  The ZLIB error code. func  The name of the function in which the error occurred. msg  A message to print out in the MSG output. Returns: The MSG code value.

void ZLIB_fileInflateFree (  void *  opaque, void *  address )  [static]

Memory release callback for ZLIB stream. Parameters: opaque  Ignored. address  Pointer to memory to free. Returns: A pointer to the allocated memory, or NULL on failure.

unsigned int ZLIB_fileInflateSizeof (  int  file, unsigned int *  size )

Determine amount of memory for file inflation. This function returns the size in bytes required for the output buffer to inflate a ZLIB file. Parameters: file  The file descriptor. size  Holds memory size upon return. Returns: A ZLIB MSG code.

unsigned int ZLIB_fileInflateToFile (  int  in, int  out, unsigned int  bufSize )

Inflate a file into an output file. This function uses the ZLIB memory to memory inflation library to inflate an input file to an output file. Temporary buffer storage of the streams can be minimized by providing a small value for bufSize. The in and out file handles must already have been opened. This function will not close the file handles, and may leave the file pointers at an offset within the file. The in file offset should point to the place where the compression record starts within the input file. Parameters: in  The input file handle. out  The inflated output file handle. bufSize  The size in bytes to allocate for stream buffering. Returns: A ZLIB MSG code.

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unsigned int ZLIB_fileInflateToMem (  int  in, void *  out, unsigned int  outSize, unsigned int  bufSize )

Inflate a memory region into an output file. This function uses the ZLIB memory to memory inflation library to inflate an input file to an output memory buffer. Temporary buffer storage of the streams is minimized. The in file handle must already have been opened. This function will not close the file handle, and may leave the file pointer at an offset within the file. The in file offset should point to the place where the compression record starts within the input file. Parameters: in  The input file handle. out  The inflated output memory buffer. outSize  The size in bytes of the out buffer. bufSize  The size in bytes to allocate for stream buffering. Returns: A ZLIB MSG code.

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