1/* 2 * Copyright (c) 2012 Apple, Inc. All Rights Reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 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. Please obtain a copy of the License at 10 * http://www.opensource.apple.com/apsl/ and read it before using this 11 * file. 12 * 13 * The Original Code and all software distributed under the License are 14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 18 * Please see the License for the specific language governing rights and 19 * limitations under the License. 20 * 21 * @APPLE_LICENSE_HEADER_END@ 22 */ 23 24#ifndef CommonNumerics_basexx_h 25#define CommonNumerics_basexx_h 26 27#include <stdint.h> 28#include <stddef.h> 29#include <dispatch/dispatch.h> 30#include "CommonNumerics.h" 31#include "CommonBaseXX.h" 32 33typedef struct encoderConstants_t { 34 uint32_t baseNum; 35 uint32_t log; 36 uint32_t inputBlocksize; 37 uint32_t outputBlocksize; 38 uint8_t basemask; 39} encoderConstants; 40 41typedef struct baseEncoder_t { 42 const char *name; 43 CNEncodings encoding; 44 const char *charMap; 45 const encoderConstants *values; 46 uint8_t baseNum; 47 uint8_t padding; 48} BaseEncoder; 49 50typedef BaseEncoder *BaseEncoderRefCustom; 51typedef const BaseEncoder *BaseEncoderRef; 52 53// This manages a global context for encoders. 54typedef struct coderFrame_t { 55 dispatch_once_t encoderInit; 56 uint8_t *reverseMap; 57 BaseEncoderRef encoderRef; 58} BaseEncoderFrame, *CoderFrame; 59 60 61#endif 62