1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef _HEIF_DECODER_IMPL_ 18 #define _HEIF_DECODER_IMPL_ 19 20 #include "include/HeifDecoderAPI.h" 21 #include <system/graphics.h> 22 #include <utils/Condition.h> 23 #include <utils/Mutex.h> 24 #include <utils/RefBase.h> 25 26 namespace android { 27 28 class IDataSource; 29 class IMemory; 30 class MediaMetadataRetriever; 31 32 /* 33 * An implementation of HeifDecoder based on Android's MediaMetadataRetriever. 34 */ 35 class HeifDecoderImpl : public HeifDecoder { 36 public: 37 38 HeifDecoderImpl(); 39 ~HeifDecoderImpl() override; 40 41 bool init(HeifStream* stream, HeifFrameInfo* frameInfo) override; 42 43 bool getEncodedColor(HeifEncodedColor* outColor) const override; 44 45 bool setOutputColor(HeifColorFormat heifColor) override; 46 47 bool decode(HeifFrameInfo* frameInfo) override; 48 49 bool getScanline(uint8_t* dst) override; 50 51 size_t skipScanlines(size_t count) override; 52 53 private: 54 struct DecodeThread; 55 56 sp<IDataSource> mDataSource; 57 sp<MediaMetadataRetriever> mRetriever; 58 sp<IMemory> mFrameMemory; 59 android_pixel_format_t mOutputColor; 60 size_t mCurScanline; 61 uint32_t mWidth; 62 uint32_t mHeight; 63 bool mFrameDecoded; 64 bool mHasImage; 65 bool mHasVideo; 66 67 // Slice decoding only 68 Mutex mLock; 69 Condition mScanlineReady; 70 sp<DecodeThread> mThread; 71 size_t mAvailableLines; 72 size_t mNumSlices; 73 uint32_t mSliceHeight; 74 bool mAsyncDecodeDone; 75 76 bool decodeAsync(); 77 bool getScanlineInner(uint8_t* dst); 78 }; 79 80 } // namespace android 81 82 #endif // _HEIF_DECODER_IMPL_ 83