/*
* Copyright (C) 2010 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.
*/
#ifndef _MTP_PROPERTY_H
#define _MTP_PROPERTY_H
#include "MtpTypes.h"
#include <string>
class MtpDataPacket;
struct MtpPropertyValue {
union {
int8_t i8;
uint8_t u8;
int16_t i16;
uint16_t u16;
int32_t i32;
uint32_t u32;
int64_t i64;
uint64_t u64;
int128_t i128;
uint128_t u128;
} u;
// string in UTF8 format
char* str;
};
class MtpProperty {
public:
MtpPropertyCode mCode;
MtpDataType mType;
bool mWriteable;
MtpPropertyValue mDefaultValue;
MtpPropertyValue mCurrentValue;
// for array types
uint32_t mDefaultArrayLength;
MtpPropertyValue* mDefaultArrayValues;
uint32_t mCurrentArrayLength;
MtpPropertyValue* mCurrentArrayValues;
enum {
kFormNone = 0,
kFormRange = 1,
kFormEnum = 2,
kFormDateTime = 3,
};
uint32_t mGroupCode;
uint8_t mFormFlag;
// for range form
MtpPropertyValue mMinimumValue;
MtpPropertyValue mMaximumValue;
MtpPropertyValue mStepSize;
// for enum form
uint16_t mEnumLength;
MtpPropertyValue* mEnumValues;
public:
MtpProperty();
MtpProperty(MtpPropertyCode propCode,
MtpDataType type,
bool writeable = false,
int defaultValue = 0);
virtual ~MtpProperty();
MtpPropertyCode getPropertyCode() const { return mCode; }
MtpDataType getDataType() const { return mType; }
bool read(MtpDataPacket& packet);
void write(MtpDataPacket& packet);
void setDefaultValue(const uint16_t* string);
void setCurrentValue(const uint16_t* string);
void setCurrentValue(MtpDataPacket& packet);
const MtpPropertyValue& getCurrentValue() { return mCurrentValue; }
void setFormRange(int min, int max, int step);
void setFormEnum(const int* values, int count);
void setFormDateTime();
void print();
inline bool isDeviceProperty() const {
return ( ((mCode & 0xF000) == 0x5000)
|| ((mCode & 0xF800) == 0xD000));
}
private:
bool readValue(MtpDataPacket& packet, MtpPropertyValue& value);
void writeValue(MtpDataPacket& packet, MtpPropertyValue& value);
MtpPropertyValue* readArrayValues(MtpDataPacket& packet, uint32_t& length);
void writeArrayValues(MtpDataPacket& packet,
MtpPropertyValue* values, uint32_t length);
void print(MtpPropertyValue& value, std::string& buffer);
};
#endif // _MTP_PROPERTY_H
