projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 0b4e3aa0 | 1 | /* |
| 5d5c5d0d A |
2 | * Copyright (c) 1999, 2000-2001 Apple Computer, Inc. All rights reserved. |
| 3 | * | |
| 2d21ac55 | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| 0b4e3aa0 | 5 | * |
| 2d21ac55 A |
6 | * This file contains Original Code and/or Modifications of Original Code |
| 7 | * as defined in and that are subject to the Apple Public Source License | |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 9 | * compliance with the License. The rights granted to you under the License | |
| 10 | * may not be used to create, or enable the creation or redistribution of, | |
| 11 | * unlawful or unlicensed copies of an Apple operating system, or to | |
| 12 | * circumvent, violate, or enable the circumvention or violation of, any | |
| 13 | * terms of an Apple operating system software license agreement. | |
| 8f6c56a5 | 14 | * |
| 2d21ac55 A |
15 | * Please obtain a copy of the License at |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
| 17 | * | |
| 18 | * The Original Code and all software distributed under the License are | |
| 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 8f6c56a5 A |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 2d21ac55 A |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| 23 | * Please see the License for the specific language governing rights and | |
| 24 | * limitations under the License. | |
| 8f6c56a5 | 25 | * |
| 2d21ac55 | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| 0b4e3aa0 A |
27 | */ |
| 28 | ||
| 29 | /* | |
| 30 | File: comp.h | |
| 31 | ||
| 32 | Contains: Glue between core prng code to the Zlib library. | |
| 33 | ||
| 34 | Written by: Counterpane, Inc. | |
| 35 | ||
| 36 | Copyright: (c) 2000 by Apple Computer, Inc., all rights reserved. | |
| 37 | ||
| 38 | Change History (most recent first): | |
| 39 | ||
| 40 | 02/10/99 dpm Created, based on Counterpane source. | |
| 41 | ||
| 42 | */ | |
| 43 | /* comp.h | |
| 44 | ||
| 45 | Header for the compression routines added to the Counterpane PRNG. | |
| 46 | */ | |
| 47 | ||
| 48 | #ifndef __YARROW_COMP_H__ | |
| 49 | #define __YARROW_COMP_H__ | |
| 50 | ||
| 51 | #include "smf.h" | |
| 52 | ||
| 53 | /* | |
| 54 | * Kernel version does NULL compression.... | |
| 55 | */ | |
| 56 | #define YARROW_KERNEL | |
| 57 | ||
| 58 | #ifdef YARROW_KERNEL | |
| 59 | /* | |
| 60 | * Shrink this down to almost nothing to simplify kernel port; | |
| 61 | * with additional hacking on prng.c, this could go away entirely | |
| 62 | */ | |
| 63 | typedef char COMP_CTX; | |
| 64 | ||
| 65 | /* and define some type3s normally picked up from zlib */ | |
| 66 | typedef unsigned char Bytef; | |
| 67 | typedef unsigned uInt; | |
| 68 | ||
| 69 | #else | |
| 70 | ||
| 71 | #include "zlib.h" | |
| 72 | ||
| 73 | /* Top level compression context */ | |
| 74 | typedef struct{ | |
| 75 | MMPTR buf; | |
| 76 | uInt spaceused; | |
| 77 | } COMP_CTX; | |
| 78 | #endif /* YARROW_KERNEL */ | |
| 79 | ||
| 80 | typedef enum comp_error_status { | |
| 81 | COMP_SUCCESS = 0, | |
| 82 | COMP_ERR_NULL_POINTER, | |
| 83 | COMP_ERR_LOW_MEMORY, | |
| 84 | COMP_ERR_LIB | |
| 85 | } comp_error_status; | |
| 86 | ||
| 87 | /* Exported functions from compress.c */ | |
| 88 | comp_error_status comp_init(COMP_CTX* ctx); | |
| 89 | comp_error_status comp_add_data(COMP_CTX* ctx,Bytef* inp,uInt inplen); | |
| 90 | comp_error_status comp_end(COMP_CTX* ctx); | |
| 91 | comp_error_status comp_get_ratio(COMP_CTX* ctx,float* out); | |
| 92 | ||
| 93 | #endif |