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108 lines
3.2 KiB
108 lines
3.2 KiB
4 months ago
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/*
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* Copyright (C) 2017 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 ITEM_TABLE_H_
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#define ITEM_TABLE_H_
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#include <set>
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#include <media/NdkMediaFormat.h>
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#include <media/stagefright/foundation/ADebug.h>
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#include <utils/KeyedVector.h>
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#include <utils/RefBase.h>
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namespace android {
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class DataSourceHelper;
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class MetaData;
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namespace heif {
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struct AssociationEntry;
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struct ImageItem;
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struct ExternalMetaItem;
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struct ItemLoc;
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struct ItemInfo;
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struct ItemProperty;
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struct ItemReference;
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/*
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* ItemTable keeps track of all image items (including coded images, grids and
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* tiles) inside a HEIF/AVIF still image (ISO/IEC FDIS 23008-12.2:2017(E)).
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*/
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class ItemTable : public RefBase {
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public:
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ItemTable(DataSourceHelper *source, bool isHeif);
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status_t parse(uint32_t type, off64_t offset, size_t size);
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bool isValid() { return mImageItemsValid; }
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uint32_t countImages() const;
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AMediaFormat *getImageMeta(const uint32_t imageIndex);
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status_t findImageItem(const uint32_t imageIndex, uint32_t *itemIndex);
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status_t findThumbnailItem(const uint32_t imageIndex, uint32_t *itemIndex);
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status_t getImageOffsetAndSize(
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uint32_t *itemIndex, off64_t *offset, size_t *size);
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status_t getExifOffsetAndSize(off64_t *offset, size_t *size);
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status_t getXmpOffsetAndSize(off64_t *offset, size_t *size);
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protected:
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~ItemTable();
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private:
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DataSourceHelper *mDataSource;
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// If this is true, then this item table is for a HEIF image. Otherwise it is for an AVIF image.
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bool mIsHeif;
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KeyedVector<uint32_t, ItemLoc> mItemLocs;
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Vector<ItemInfo> mItemInfos;
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Vector<AssociationEntry> mAssociations;
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Vector<sp<ItemProperty> > mItemProperties;
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Vector<sp<ItemReference> > mItemReferences;
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uint32_t mPrimaryItemId;
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off64_t mIdatOffset;
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size_t mIdatSize;
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std::set<uint32_t> mRequiredBoxes;
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std::set<uint32_t> mBoxesSeen;
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bool mImageItemsValid;
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uint32_t mCurrentItemIndex;
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KeyedVector<uint32_t, ImageItem> mItemIdToItemMap;
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KeyedVector<uint32_t, ExternalMetaItem> mItemIdToMetaMap;
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Vector<uint32_t> mDisplayables;
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status_t parseIlocBox(off64_t offset, size_t size);
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status_t parseIinfBox(off64_t offset, size_t size);
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status_t parsePitmBox(off64_t offset, size_t size);
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status_t parseIprpBox(off64_t offset, size_t size);
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status_t parseIdatBox(off64_t offset, size_t size);
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status_t parseIrefBox(off64_t offset, size_t size);
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void attachProperty(const AssociationEntry &association);
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status_t buildImageItemsIfPossible(uint32_t type);
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DISALLOW_EVIL_CONSTRUCTORS(ItemTable);
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};
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} // namespace heif
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} // namespace android
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#endif // ITEM_TABLE_H_
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