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124 lines
3.9 KiB
124 lines
3.9 KiB
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _MTP_PROPERTY_H
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#define _MTP_PROPERTY_H
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#include "MtpTypes.h"
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#include <string>
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namespace android {
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class MtpDataPacket;
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struct MtpPropertyValue {
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// pointer str initialized to NULL so that free operation
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// is not called for pre-assigned value
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MtpPropertyValue() : str (NULL) {}
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union {
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int8_t i8;
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uint8_t u8;
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int16_t i16;
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uint16_t u16;
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int32_t i32;
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uint32_t u32;
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int64_t i64;
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uint64_t u64;
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int128_t i128;
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uint128_t u128;
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} u;
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// string in UTF8 format
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char* str;
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};
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class MtpProperty {
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public:
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MtpPropertyCode mCode;
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MtpDataType mType;
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bool mWriteable;
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MtpPropertyValue mDefaultValue;
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MtpPropertyValue mCurrentValue;
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// for array types
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uint32_t mDefaultArrayLength;
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MtpPropertyValue* mDefaultArrayValues;
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uint32_t mCurrentArrayLength;
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MtpPropertyValue* mCurrentArrayValues;
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enum {
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kFormNone = 0,
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kFormRange = 1,
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kFormEnum = 2,
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kFormDateTime = 3,
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};
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uint32_t mGroupCode;
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uint8_t mFormFlag;
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// for range form
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MtpPropertyValue mMinimumValue;
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MtpPropertyValue mMaximumValue;
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MtpPropertyValue mStepSize;
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// for enum form
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uint16_t mEnumLength;
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MtpPropertyValue* mEnumValues;
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public:
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MtpProperty();
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MtpProperty(MtpPropertyCode propCode,
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MtpDataType type,
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bool writeable = false,
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int defaultValue = 0);
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virtual ~MtpProperty();
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MtpPropertyCode getPropertyCode() const { return mCode; }
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MtpDataType getDataType() const { return mType; }
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bool read(MtpDataPacket& packet);
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void write(MtpDataPacket& packet);
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void setDefaultValue(const uint16_t* string);
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void setCurrentValue(const uint16_t* string);
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void setCurrentValue(const char* string);
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void setCurrentValue(MtpDataPacket& packet);
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const MtpPropertyValue& getCurrentValue() { return mCurrentValue; }
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void setFormRange(int min, int max, int step);
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void setFormEnum(const int* values, int count);
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void setFormDateTime();
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void print();
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inline bool isDeviceProperty() const {
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return ( ((mCode & 0xF000) == 0x5000)
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|| ((mCode & 0xF800) == 0xD000));
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}
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private:
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bool readValue(MtpDataPacket& packet, MtpPropertyValue& value);
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void writeValue(MtpDataPacket& packet, MtpPropertyValue& value);
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MtpPropertyValue* readArrayValues(MtpDataPacket& packet, uint32_t& length);
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void writeArrayValues(MtpDataPacket& packet,
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MtpPropertyValue* values, uint32_t length);
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void print(MtpPropertyValue& value, std::string& buffer);
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};
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}; // namespace android
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#endif // _MTP_PROPERTY_H
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