Book Image

Rust Programming By Example

By : Guillaume Gomez, Antoni Boucher
Book Image

Rust Programming By Example

By: Guillaume Gomez, Antoni Boucher

Overview of this book

Rust is an open source, safe, concurrent, practical language created by Mozilla. It runs blazingly fast, prevents segfaults, and guarantees safety. This book gets you started with essential software development by guiding you through the different aspects of Rust programming. With this approach, you can bridge the gap between learning and implementing immediately. Beginning with an introduction to Rust, you’ll learn the basic aspects such as its syntax, data types, functions, generics, control flows, and more. After this, you’ll jump straight into building your first project, a Tetris game. Next you’ll build a graphical music player and work with fast, reliable networking software using Tokio, the scalable and productive asynchronous IO Rust library. Over the course of this book, you’ll explore various features of Rust Programming including its SDL features, event loop, File I/O, and the famous GTK+ widget toolkit. Through these projects, you’ll see how well Rust performs in terms of concurrency—including parallelism, reliability, improved performance, generics, macros, and thread safety. We’ll also cover some asynchronous and reactive programming aspects of Rust. By the end of the book, you’ll be comfortable building various real-world applications in Rust.
Table of Contents (18 chapters)
Title Page
Copyright and Credits
Packt Upsell
Contributors
Preface
3
Events and Basic Game Mechanisms
Index

Using gstreamer for playback


Implementing an engine to play music was a good exercise to learn about threading. However, for a real program, you could simply use gstreamer for the music playback. So, let's see how to use this library in our music player.

Remove the following dependencies in your Cargo.toml:

crossbeam = "^0.3.0"
pulse-simple = "^1.0.0"
simplemad = "^0.8.1"

And remove their corresponding extern crate statements. We can also remove the mp3 and player modules as we'll use gstreamer instead. Now, we can add our dependencies for gstreamer:

gstreamer = "^0.9.1"
gstreamer-player = "^0.9.0"

And add their corresponding extern crate statements:

extern crate gstreamer as gst;
extern crate gstreamer_player as gst_player;

At the beginning of the main function, we need to initialize gstreamer:

gst::init().expect("gstreamer initialization failed");

We no longer need our State structure, so we remove it and the state field in the App structure. And now, we can update our playlist module. First, let...