| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| #include "HidDefs.h" |
| #include "HidGlobal.h" |
| #include "HidLog.h" |
| |
| namespace HidUtil { |
| using namespace HidDef::GlobalTag; |
| |
| bool HidGlobal::append(const HidItem &i) { |
| using namespace HidDef::TagType; |
| if (i.type != GLOBAL) { |
| LOG_E << "HidGlobal::append cannot process tag that is not global, " << i << LOG_ENDL; |
| return false; |
| } |
| |
| if (i.tag == PUSH || i.tag == POP) { |
| LOG_E << "PUSH and POP should be handled in HidGlobalStack, " << i << LOG_ENDL; |
| return false; |
| } |
| |
| int signedInteger; |
| unsigned unsignedInteger; |
| bool signedError = !i.dataAsSigned(&signedInteger); |
| bool unsignedError = !i.dataAsUnsigned(&unsignedInteger); |
| |
| bool valueError = false; |
| bool ret = true; |
| switch (i.tag) { |
| case USAGE_PAGE: |
| usagePage = unsignedInteger; |
| valueError = unsignedError; |
| break; |
| case LOGICAL_MINIMUM: |
| logicalMin = signedInteger; |
| valueError = signedError; |
| break; |
| case LOGICAL_MAXIMUM: |
| logicalMax = signedInteger; |
| valueError = signedError; |
| break; |
| case PHYSICAL_MINIMUM: |
| physicalMin = signedInteger; |
| valueError = signedError; |
| break; |
| case PHYSICAL_MAXIMUM: |
| physicalMax = signedInteger; |
| valueError = signedError; |
| break; |
| case UNIT_EXPONENT: |
| exponent = unsignedInteger; |
| valueError = unsignedError; |
| break; |
| case UNIT: |
| unit = unsignedInteger; |
| valueError = unsignedError; |
| break; |
| case REPORT_SIZE: |
| reportSize = unsignedInteger; |
| valueError = unsignedError; |
| break; |
| case REPORT_ID: |
| reportId = unsignedInteger; |
| valueError = unsignedError; |
| break; |
| case REPORT_COUNT: |
| reportCount = unsignedInteger; |
| valueError = unsignedError; |
| break; |
| default: |
| LOG_E << "unknown global tag, " << i << LOG_ENDL; |
| ret = false; |
| } |
| |
| if (valueError) { |
| LOG_E << "Cannot get signed / unsigned data at " << i << LOG_ENDL; |
| ret = false; |
| } |
| return ret; |
| } |
| |
| bool HidGlobalStack::append(const HidItem &i) { |
| using namespace HidDef::TagType; |
| if (i.type != GLOBAL) { |
| return false; |
| } |
| |
| bool ret = true; |
| if (i.tag == PUSH) { |
| mStack.push_back(top()); |
| } else if (i.tag == POP) { |
| mStack.pop_back(); |
| if (mStack.size() == 0) { |
| mStack.push_back(HidGlobal()); // fail-safe |
| ret = false; |
| } |
| } else { |
| ret = mStack.back().append(i); |
| } |
| return ret; |
| } |
| |
| HidGlobalStack::HidGlobalStack() { |
| // default element |
| mStack.push_back(HidGlobal()); |
| } |
| |
| const HidGlobal& HidGlobalStack::top() const { |
| return mStack.back(); |
| } |
| |
| } // namespace HidUtil |