Now that we can play short audio samples, it is time to organize our audio system into classes and take a closer look at the 2_Streaming example. Long audio samples, such as background music, require a lot of memory in a decompressed form. Streaming is a technique to decompress them in small chunks, piece by piece. The clAudioThread class manages the initialization and does everything from the previous sample except playing the sound:
class clAudioThread: public iThread
{
public:
clAudioThread()
: FDevice( nullptr )
, FContext( nullptr )
, FInitialized( false )
{}
virtual void Run()
{
if ( !LoadAL() ) { return; }
FDevice = alcOpenDevice( nullptr );
FContext = alcCreateContext( FDevice, nullptr );
alcMakeContextCurrent( FContext );
FInitialized = true;
while ( !IsPendingExit() ) { Env_Sleep( 100 ); }
alcDestroyContext( FContext );
alcCloseDevice( FDevice );
UnloadAL();
}