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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_METADATA_H__
#define __DRM_METADATA_H__
#include "drm_framework_common.h"
namespace android {
/**
* This is an utility class which contains the constraints information.
*
* As a result of DrmManagerClient::getMetadata(const String8*)
* an instance of DrmMetadata would be returned.
*/
class DrmMetadata {
public:
/**
* Iterator for key
*/
class KeyIterator {
friend class DrmMetadata;
private:
KeyIterator(DrmMetadata* drmMetadata) : mDrmMetadata(drmMetadata), mIndex(0) {}
public:
KeyIterator(const KeyIterator& keyIterator);
KeyIterator& operator=(const KeyIterator& keyIterator);
virtual ~KeyIterator() {}
public:
bool hasNext();
const String8& next();
private:
DrmMetadata* mDrmMetadata;
unsigned int mIndex;
};
/**
* Iterator for constraints
*/
class Iterator {
friend class DrmMetadata;
private:
Iterator(DrmMetadata* drmMetadata) : mDrmMetadata(drmMetadata), mIndex(0) {}
public:
Iterator(const Iterator& iterator);
Iterator& operator=(const Iterator& iterator);
virtual ~Iterator() {}
public:
bool hasNext();
String8 next();
private:
DrmMetadata* mDrmMetadata;
unsigned int mIndex;
};
public:
DrmMetadata() {}
virtual ~DrmMetadata() {
DrmMetadata::KeyIterator keyIt = this->keyIterator();
while (keyIt.hasNext()) {
String8 key = keyIt.next();
const char* value = this->getAsByteArray(&key);
if (NULL != value) {
delete[] value;
value = NULL;
}
}
mMetadataMap.clear();
}
public:
int getCount(void) const;
status_t put(const String8* key, const char* value);
String8 get(const String8& key) const;
const char* getAsByteArray(const String8* key) const;
KeyIterator keyIterator();
Iterator iterator();
private:
const char* getValue(const String8* key) const;
private:
typedef KeyedVector<String8, const char*> DrmMetadataMap;
DrmMetadataMap mMetadataMap;
};
};
#endif /* __DRM_METADATA_H__ */
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