MP3 streaming tests

Some basic MP3 streaming tests using libCURL, the mpg123 library and the OpenAL API. The primary target is the Raspberry Pi - but these tests should compile and run on most / all Linux systems.

Building

Dependencies

The main dependencies are:

• libCURL
• mpg123
• OpenAL

To install these on a Debian-like system, try the following as root:

apt-get install libcurl4-gnutls-dev libmpg123-dev libopenal-dev

Installing OpenAL library

If using the apt repositories for Raspbian GNU/Linux, you may have problems with version 1:1.17.2-4 of libopenal-dev. Attempting playback with this version yielded an "Illegal instruction" error. If this is the case, you may need to compile OpenAL from scratch.

First of all install CMake.

sudo apt-get install cmake

or

su
apt-get install cmake

Remove the default OpenAL library and header files that are installed.

apt-get remove libopenal*

Then download a recent version of OpenAL soft from either the website or Github repository. If using the tarball from the website, for example, the following should work.

tar xf openal-soft-1.18.2.tar.bz2
cd openal-soft-1.18.2
cd build
cmake ..
make
sudo make install

Using GNU make

Simple type

make openal-test

to build the program, and

make clean

to remove it. (There is no make install option currently.)

Using xmake

If you prefer to use xmake ( https://xmake.io/ ), use

xmake -r

to build or re-build the project.

Running

The binary should be invoked as follows.

./openal-test <url>

Example:

./openal-test https://designtrail.net/~david/audio/test1.mp3

Controls

Type p to pause / resume. Type q to exit.