/* * Copyright (c) 1999, 2000-2001 Apple Computer, Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* File: comp.h Contains: Glue between core prng code to the Zlib library. Written by: Counterpane, Inc. Copyright: (c) 2000 by Apple Computer, Inc., all rights reserved. Change History (most recent first): 02/10/99 dpm Created, based on Counterpane source. */ /* comp.h Header for the compression routines added to the Counterpane PRNG. */ #ifndef __YARROW_COMP_H__ #define __YARROW_COMP_H__ #include "smf.h" /* * Kernel version does NULL compression.... */ #define YARROW_KERNEL #ifdef YARROW_KERNEL /* * Shrink this down to almost nothing to simplify kernel port; * with additional hacking on prng.c, this could go away entirely */ typedef char COMP_CTX; /* and define some type3s normally picked up from zlib */ typedef unsigned char Bytef; typedef unsigned uInt; #else #include "zlib.h" /* Top level compression context */ typedef struct{ MMPTR buf; uInt spaceused; } COMP_CTX; #endif /* YARROW_KERNEL */ typedef enum comp_error_status { COMP_SUCCESS = 0, COMP_ERR_NULL_POINTER, COMP_ERR_LOW_MEMORY, COMP_ERR_LIB } comp_error_status; /* Exported functions from compress.c */ comp_error_status comp_init(COMP_CTX* ctx); comp_error_status comp_add_data(COMP_CTX* ctx,Bytef* inp,uInt inplen); comp_error_status comp_end(COMP_CTX* ctx); comp_error_status comp_get_ratio(COMP_CTX* ctx,float* out); #endif