// Copyright 2018 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef BASE_ANDROID_ANDROID_IMAGE_READER_COMPAT_H_ #define BASE_ANDROID_ANDROID_IMAGE_READER_COMPAT_H_ #include "base/android/android_image_reader_abi.h" #include "base/base_export.h" #include "base/no_destructor.h" namespace base { namespace android { // This class provides runtime support for working with AImage, AImageReader and // ANativeWindow objects on Android O systems without requiring building for the // Android O NDK level. Don't call GetInstance() unless IsSupported() returns // true. class BASE_EXPORT AndroidImageReader { public: // Thread safe GetInstance. static AndroidImageReader& GetInstance(); AndroidImageReader(const AndroidImageReader&) = delete; AndroidImageReader& operator=(const AndroidImageReader&) = delete; // Check if the image reader usage is supported. This function returns TRUE // if android version is >=OREO, image reader support is not disabled and all // the required functions are loaded. bool IsSupported(); // Naming convention of all the below functions are chosen to exactly match // the function names in the NDK. void AImage_delete(AImage* image); void AImage_deleteAsync(AImage* image, int releaseFenceFd); media_status_t AImage_getHardwareBuffer(const AImage* image, AHardwareBuffer** buffer); media_status_t AImage_getWidth(const AImage* image, int32_t* width); media_status_t AImage_getHeight(const AImage* image, int32_t* height); media_status_t AImage_getCropRect(const AImage* image, AImageCropRect* rect); media_status_t AImageReader_newWithUsage(int32_t width, int32_t height, int32_t format, uint64_t usage, int32_t maxImages, AImageReader** reader); media_status_t AImageReader_setImageListener( AImageReader* reader, AImageReader_ImageListener* listener); void AImageReader_delete(AImageReader* reader); media_status_t AImageReader_getFormat(const AImageReader* reader, int32_t* format); media_status_t AImageReader_getWindow(AImageReader* reader, ANativeWindow** window); media_status_t AImageReader_acquireLatestImageAsync(AImageReader* reader, AImage** image, int* acquireFenceFd); media_status_t AImageReader_acquireNextImageAsync(AImageReader* reader, AImage** image, int* acquireFenceFd); jobject ANativeWindow_toSurface(JNIEnv* env, ANativeWindow* window); private: friend class base::NoDestructor; AndroidImageReader(); bool LoadFunctions(); const bool is_supported_; pAImage_delete AImage_delete_; pAImage_deleteAsync AImage_deleteAsync_; pAImage_getHardwareBuffer AImage_getHardwareBuffer_; pAImage_getWidth AImage_getWidth_; pAImage_getHeight AImage_getHeight_; pAImage_getCropRect AImage_getCropRect_; pAImageReader_newWithUsage AImageReader_newWithUsage_; pAImageReader_setImageListener AImageReader_setImageListener_; pAImageReader_delete AImageReader_delete_; pAImageReader_getFormat AImageReader_getFormat_; pAImageReader_getWindow AImageReader_getWindow_; pAImageReader_acquireLatestImageAsync AImageReader_acquireLatestImageAsync_; pAImageReader_acquireNextImageAsync AImageReader_acquireNextImageAsync_; pANativeWindow_toSurface ANativeWindow_toSurface_; }; } // namespace android } // namespace base #endif // BASE_ANDROID_ANDROID_IMAGE_READER_COMPAT_H_