1 /* Copyright (C) 2011 Circuits At Home, LTD. All rights reserved.
3 This software may be distributed and modified under the terms of the GNU
4 General Public License version 2 (GPL2) as published by the Free Software
5 Foundation and appearing in the file GPL2.TXT included in the packaging of
6 this file. Please note that GPL2 Section 2[b] requires that all works based
7 on this software must also be made publicly available under the terms of
14 Web : http://www.circuitsathome.com
15 e-mail : support@circuitsathome.com
18 #if !defined(_usb_h_) || defined(__PARSETOOLS_H__)
19 #error "Never include parsetools.h directly; include Usb.h instead"
21 #define __PARSETOOLS_H__
23 struct MultiValueBuffer {
26 } __attribute__((packed));
28 class MultiByteValueParser {
35 MultiByteValueParser() : pBuf(NULL), countDown(0), valueSize(0) {
38 const uint8_t* GetBuffer() {
42 void Initialize(MultiValueBuffer * const pbuf) {
43 pBuf = (uint8_t*)pbuf->pValue;
44 countDown = valueSize = pbuf->valueSize;
47 bool Parse(uint8_t **pp, uint16_t *pcntdn);
57 ByteSkipper() : pBuf(NULL), nStage(0), countDown(0) {
60 void Initialize(MultiValueBuffer *pbuf) {
61 pBuf = (uint8_t*)pbuf->pValue;
65 bool Skip(uint8_t **pp, uint16_t *pcntdn, uint16_t bytes_to_skip) {
68 countDown = bytes_to_skip;
71 for(; countDown && (*pcntdn); countDown--, (*pp)++, (*pcntdn)--);
80 // Pointer to a callback function triggered for each element of PTP array when used with PTPArrayParser
81 typedef void (*PTP_ARRAY_EL_FUNC)(const MultiValueBuffer * const p, uint32_t count, const void *me);
87 modeArray, modeRange/*, modeEnum*/
97 uint8_t lenSize; // size of the array length field in bytes
98 uint8_t valSize; // size of the array element in bytes
100 MultiValueBuffer *pBuf;
102 // The only parser for both size and array element parsing
103 MultiByteValueParser theParser;
105 uint8_t /*ParseMode*/ prsMode;
120 void Initialize(const uint8_t len_size, const uint8_t val_size, MultiValueBuffer * const p, const uint8_t mode = modeArray) {
126 if(prsMode == modeRange) {
127 arLenCntdn = arLen = 3;
130 arLenCntdn = arLen = 0;
134 theParser.Initialize(p);
137 bool Parse(uint8_t **pp, uint16_t *pcntdn, PTP_ARRAY_EL_FUNC pf, const void *me = NULL);
140 #endif // __PARSETOOLS_H__