1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "TestHidDescriptor.h" 18 #include "HidLog.h" 19 #include "HidParser.h" 20 #include "StreamIoUtil.h" 21 22 using namespace HidUtil; 23 24 void printRawValue(const std::vector<unsigned char> &descriptor) { 25 LOG_D << "Descriptor [" << descriptor.size() << "]: " << std::hex; 26 hexdumpToStream(LOG_D, descriptor.begin(), descriptor.end()); 27 } 28 29 void printToken(const std::vector<HidItem> &hidItemVector) { 30 LOG_V << "Total " << hidItemVector.size() << " tokens" << LOG_ENDL; 31 for (auto &i : hidItemVector) { 32 LOG_V << i << LOG_ENDL; 33 } 34 } 35 36 int main() { 37 const TestHidDescriptor *t = findTestDescriptor("accel3"); 38 constexpr unsigned int ACCEL_3D_USAGE = 0x200073; 39 40 assert(t != nullptr); 41 std::vector<unsigned char> descriptor(t->data, t->data + t->len); 42 43 // parse can be done in one step with HidParser::parse(const unsigned char *begin, size_t size); 44 // here it is done in multiple steps for illustration purpose 45 HidParser hidParser; 46 // print out raw value 47 printRawValue(descriptor); 48 49 // tokenize it 50 std::vector<HidItem> hidItemVector = HidItem::tokenize(descriptor); 51 52 // print out tokens 53 printToken(hidItemVector); 54 55 // parse it 56 if (hidParser.parse(hidItemVector)) { 57 // making a deepcopy of tree (not necessary, but for illustration) 58 std::shared_ptr<HidTreeNode> tree = hidParser.getTree()->deepCopy(); 59 60 LOG_V << "Tree: " << LOG_ENDL; 61 LOG_V << *tree; 62 LOG_V << LOG_ENDL; 63 64 hidParser.filterTree(); 65 LOG_V << "FilteredTree: " << LOG_ENDL; 66 LOG_V << *(hidParser.getTree()); 67 68 LOG_V << "DigestVector: " << LOG_ENDL; 69 std::unordered_set<unsigned int> interested = {ACCEL_3D_USAGE}; 70 HidParser::DigestVector digestVector = hidParser.generateDigest(interested); 71 LOG_V << digestVector; 72 73 } else { 74 LOG_V << "Parsing Error" << LOG_ENDL; 75 } 76 77 return 0; 78 } 79 80
