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90 lines
2.3 KiB
90 lines
2.3 KiB
/*
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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 _HEIF_DECODER_IMPL_
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#define _HEIF_DECODER_IMPL_
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#include "include/HeifDecoderAPI.h"
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#include <system/graphics.h>
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#include <utils/Condition.h>
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#include <utils/Mutex.h>
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#include <utils/RefBase.h>
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namespace android {
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class IDataSource;
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class IMemory;
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class MediaMetadataRetriever;
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/*
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* An implementation of HeifDecoder based on Android's MediaMetadataRetriever.
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*/
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class HeifDecoderImpl : public HeifDecoder {
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public:
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HeifDecoderImpl();
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~HeifDecoderImpl() override;
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bool init(HeifStream* stream, HeifFrameInfo* frameInfo) override;
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bool getSequenceInfo(HeifFrameInfo* frameInfo, size_t *frameCount) override;
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bool getEncodedColor(HeifEncodedColor* outColor) const override;
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bool setOutputColor(HeifColorFormat heifColor) override;
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bool decode(HeifFrameInfo* frameInfo) override;
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bool decodeSequence(int frameIndex, HeifFrameInfo* frameInfo) override;
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bool getScanline(uint8_t* dst) override;
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size_t skipScanlines(size_t count) override;
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private:
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struct DecodeThread;
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sp<IDataSource> mDataSource;
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sp<MediaMetadataRetriever> mRetriever;
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sp<IMemory> mFrameMemory;
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HeifFrameInfo mImageInfo;
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HeifFrameInfo mSequenceInfo;
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android_pixel_format_t mOutputColor;
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size_t mCurScanline;
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size_t mTotalScanline;
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bool mFrameDecoded;
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bool mHasImage;
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bool mHasVideo;
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size_t mSequenceLength;
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// Slice decoding only
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Mutex mLock;
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Condition mScanlineReady;
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sp<DecodeThread> mThread;
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size_t mAvailableLines;
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size_t mNumSlices;
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uint32_t mSliceHeight;
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bool mAsyncDecodeDone;
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bool decodeAsync();
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bool getScanlineInner(uint8_t* dst);
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bool reinit(HeifFrameInfo* frameInfo);
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};
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} // namespace android
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#endif // _HEIF_DECODER_IMPL_
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