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/*
* Copyright (C) 2017 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 _HEIF_DECODER_IMPL_
#define _HEIF_DECODER_IMPL_
#include "include/HeifDecoderAPI.h"
#include <system/graphics.h>
#include <utils/Condition.h>
#include <utils/Mutex.h>
#include <utils/RefBase.h>
namespace android {
class IDataSource;
class IMemory;
class MediaMetadataRetriever;
/*
* An implementation of HeifDecoder based on Android's MediaMetadataRetriever.
*/
class HeifDecoderImpl : public HeifDecoder {
public:
HeifDecoderImpl();
~HeifDecoderImpl() override;
bool init(HeifStream* stream, HeifFrameInfo* frameInfo) override;
bool getEncodedColor(HeifEncodedColor* outColor) const override;
bool setOutputColor(HeifColorFormat heifColor) override;
bool decode(HeifFrameInfo* frameInfo) override;
bool getScanline(uint8_t* dst) override;
size_t skipScanlines(size_t count) override;
private:
struct DecodeThread;
sp<IDataSource> mDataSource;
sp<MediaMetadataRetriever> mRetriever;
sp<IMemory> mFrameMemory;
android_pixel_format_t mOutputColor;
size_t mCurScanline;
uint32_t mWidth;
uint32_t mHeight;
bool mFrameDecoded;
bool mHasImage;
bool mHasVideo;
// Slice decoding only
Mutex mLock;
Condition mScanlineReady;
sp<DecodeThread> mThread;
size_t mAvailableLines;
size_t mNumSlices;
uint32_t mSliceHeight;
bool mAsyncDecodeDone;
bool decodeAsync();
bool getScanlineInner(uint8_t* dst);
};
} // namespace android
#endif // _HEIF_DECODER_IMPL_
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