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+// Copyright 2018 The Chromium Authors
+// 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>;
+
+ 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_