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Android NDK Game Development Cookbook

Android NDK Game Development Cookbook

By : Sergey Kosarevsky, Viktor Latypov
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Android NDK Game Development Cookbook

Android NDK Game Development Cookbook

4 (5)
By: Sergey Kosarevsky, Viktor Latypov

Overview of this book

Android NDK is used for multimedia applications which require direct access to a system's resources. Android NDK is also the key for portability, which in turn provides a reasonably comfortable development and debugging process using familiar tools such as GCC and Clang toolchains. If your wish to build Android games using this amazing framework, then this book is a must-have.This book provides you with a number of clear step-by-step recipes which will help you to start developing mobile games with Android NDK and boost your productivity debugging them on your computer. This book will also provide you with new ways of working as well as some useful tips and tricks that will demonstrably increase your development speed and efficiency.This book will take you through a number of easy-to-follow recipes that will help you to take advantage of the Android NDK as well as some popular C++ libraries. It presents Android application development in C++ and shows you how to create a complete gaming application. You will learn how to write portable multithreaded C++ code, use HTTP networking, play audio files, use OpenGL ES, to render high-quality text, and how to recognize user gestures on multi-touch devices. If you want to leverage your C++ skills in mobile development and add performance to your Android applications, then this is the book for you.
Table of Contents (11 chapters)
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10
Index

Implementing portable memory-mapped files

Modern operating systems provide a powerful mechanism called the memory-mapped files. In short, it allows us to map the contents of the file into the application address space. In practice, this means we can treat files as usual arrays and access them using C pointers.

Getting ready

To understand the implementation of the interfaces from the previous recipe we recommend to read about memory mapping. The overview of this mechanism implementation in Windows can be found on the MSDN page at http://msdn.microsoft.com/en-us/library/ms810613.aspx.

To find out more about memory mapping, the reader may refer to the mmap() function documentation.

How to do it...

  1. In Windows, memory-mapped files are created using the CreateFileMapping() and MapViewOfFile() API calls. Android uses the mmap() function, which works pretty much the same way. Here we declare the RawFile class implementing the iRawFile interface.

    RawFile holds a pointer to a memory-mapped file and its...

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