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