Book Image

Mastering Android NDK

Book Image

Mastering Android NDK

Overview of this book

Android NDK is used for multimedia applications that require direct access to system resources. NDK is also the key for portability, which in turn allows a reasonably comfortable development and debugging process using familiar tools such as GCC and Clang toolchains. This is a hands-on guide to extending your game development skills with Android NDK. The book takes you through many clear, step-by-step example applications to help you further explore the features of Android NDK and some popular C++ libraries and boost your productivity by debugging the development process. Through the course of this book, you will learn how to write portable multi-threaded native code, use HTTP networking in C++, play audio files, use OpenGL ES 3, and render high-quality text. Each chapter aims to take you one step closer to building your application. By the end of this book, you will be able to create an engaging, complete gaming application.
Table of Contents (17 chapters)
Mastering Android NDK
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

FreeImage


FreeImage is a popular library for bitmap manipulation, Unity gaming engine is among the users of this library (http://freeimage.sourceforge.net/users.html). The library is an all-in-one wrapper on top of libpng, libjpeg, libtiff, and many others, providing fast image loading routines without falling back to Java code.

FreeImage includes a complete set of Makefiles for different platforms. The compilation of the library for Android is straightforward with the instructions from Dealing with precompiled static libraries section. The Application.mk file differs from the same file for Curl in one line:

APP_MODULES := FreeImage

In the Android.mk file, we will change the C compilation flags:

GLOBAL_CFLAGS   := -O3 -DHAVE_CONFIG_H=1 -DFREEIMAGE_LIB -DDISABLE_PERF_MEASUREMENT

In the following sample, we will implement two simple routines to load and save images in various file formats to and from memory blocks.

We start with the FreeImage_LoadFromMemory() routine, which takes the Data array...