12/24/2023 0 Comments Android ndk camera![]() ![]() I hope you are also familiar with scoped storage concepts in Android.īasically for improved protection to app and user data on external storage Android has tightened how applications can access files on Android. If you are reading this article I expect you to be familiar with concepts like fundamentals of Android development, NDK, Java Native Interface (JNI) et cetera. Please let me know if that is indeed the case. I have been told not everyone is interested in the why part that usually I go on about. Why read the image in native layer to begin with? These terms interchangeably in the article.Īlso, while the article is primarily about reading image files in C++ - the concepts can easily be extrapolated to reading any file format in native layer in Android.īefore getting started with steps and code examples, there is yet another elephant in the room that needs to be addressed. If you have such circumstances - this article is for you!įYI, When I say "native layer" or "native code" it means in C++ code. However, under certain circumstances you may want to read the image directly in the native layer. Do read / write operations in the native layer.Marshall it to the native layer with JNI.Sometimes, there maybe need to process the image files in native layer (C++). I won't cover reading different file formats in Java layer in this article. For reading image files, the usual approach is to read files using Java APIs that are available in Android SDK or use higher level abstractions like MediaStore APIs. Many apps have requirements to read files from disk. NDK is often used for writing high performance code like image processing algorithms. Software development in Android can be done using the Java SDK or Native Development Kit aka NDK made available by Android Open Source Project (AOSP). ![]()
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