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/*
* 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 __DRM_INFO_H__
#define __DRM_INFO_H__
#include "drm_framework_common.h"
namespace android {
/**
* This is an utility class in which necessary information required to transact
* between device and online DRM server is described. DRM Framework achieves
* server registration, license acquisition and any other server related transaction
* by passing an instance of this class to DrmManagerClient::processDrmInfo(const DrmInfo*).
*
* The Caller can retrieve the DrmInfo instance by using
* DrmManagerClient::acquireDrmInfo(const DrmInfoRequest*) by passing DrmInfoRequest instance.
*
*/
class DrmInfo {
public:
/**
* Constructor for DrmInfo
*
* @param[in] infoType Type of information
* @param[in] drmBuffer Trigger data
* @param[in] mimeType MIME type
*/
DrmInfo(int infoType, const DrmBuffer& drmBuffer, const String8& mimeType);
/**
* Destructor for DrmInfo
*/
virtual ~DrmInfo() {}
public:
/**
* Iterator for key
*/
class KeyIterator {
friend class DrmInfo;
private:
KeyIterator(const DrmInfo* drmInfo)
: mDrmInfo(const_cast <DrmInfo*> (drmInfo)), mIndex(0) {}
public:
KeyIterator(const KeyIterator& keyIterator);
KeyIterator& operator=(const KeyIterator& keyIterator);
virtual ~KeyIterator() {}
public:
bool hasNext();
const String8& next();
private:
DrmInfo* mDrmInfo;
unsigned int mIndex;
};
/**
* Iterator
*/
class Iterator {
friend class DrmInfo;
private:
Iterator(const DrmInfo* drmInfo)
: mDrmInfo(const_cast <DrmInfo*> (drmInfo)), mIndex(0) {}
public:
Iterator(const Iterator& iterator);
Iterator& operator=(const Iterator& iterator);
virtual ~Iterator() {}
public:
bool hasNext();
String8& next();
private:
DrmInfo* mDrmInfo;
unsigned int mIndex;
};
public:
/**
* Returns information type associated with this instance
*
* @return Information type
*/
int getInfoType(void) const;
/**
* Returns MIME type associated with this instance
*
* @return MIME type
*/
String8 getMimeType(void) const;
/**
* Returns the trigger data associated with this instance
*
* @return Trigger data
*/
const DrmBuffer& getData(void) const;
/**
* Returns the number of attributes contained in this instance
*
* @return Number of attributes
*/
int getCount(void) const;
/**
* Adds optional information as <key, value> pair to this instance
*
* @param[in] key Key to add
* @param[in] value Value to add
* @return Returns the error code
*/
status_t put(const String8& key, const String8& value);
/**
* Retrieves the value of given key
*
* @param key Key whose value to be retrieved
* @return The value
*/
String8 get(const String8& key) const;
/**
* Returns KeyIterator object to walk through the keys associated with this instance
*
* @return KeyIterator object
*/
KeyIterator keyIterator() const;
/**
* Returns Iterator object to walk through the values associated with this instance
*
* @return Iterator object
*/
Iterator iterator() const;
/**
* Returns index of the given key
*
* @return index
*/
int indexOfKey(const String8& key) const;
protected:
int mInfoType;
DrmBuffer mData;
String8 mMimeType;
KeyedVector<String8, String8> mAttributes;
};
};
#endif /* __DRM_INFO_H__ */
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