brew install openal-soft Let’s create a minimal C program that loads a WAV file and plays it in 3D space. Step 1: Initialization #include <AL/al.h> #include <AL/alc.h> #include <AL/alext.h> #include <stdio.h> ALCdevice *device = alcOpenDevice(NULL); // NULL = default device if (!device) return 1; ALCcontext *context = alcCreateContext(device, NULL); alcMakeContextCurrent(context); Step 2: Load a Mono WAV into Buffer (Simplified – real code would parse WAV headers)
# Debian/Ubuntu sudo apt-get install libopenal-dev sudo dnf install openal-soft-devel Arch sudo pacman -S openal openal -open audio library- 2.0.7.0
ALuint buffer; alGenBuffers(1, &buffer); // Assume 'data' contains 16-bit PCM, sample rate 44100, mono alBufferData(buffer, AL_FORMAT_MONO16, data, data_size, 44100); ALuint source; alGenSources(1, &source); alSourcei(source, AL_BUFFER, buffer); alSource3f(source, AL_POSITION, 2.0f, 0.0f, 1.0f); // 2 meters right, 1 forward alSourcef(source, AL_GAIN, 0.8f); alSourcef(source, AL_REFERENCE_DISTANCE, 1.0f); alSourcef(source, AL_MAX_DISTANCE, 20.0f); Step 4: Set Listener Position alListener3f(AL_POSITION, 0.0f, 0.0f, 0.0f); alListener3f(AL_VELOCITY, 0.0f, 0.0f, 0.0f); // Orientation: 'at' and 'up' vectors ALfloat orientation[] = 0.0f,0.0f,-1.0f, 0.0f,1.0f,0.0f; alListenerfv(AL_ORIENTATION, orientation); Step 5: Play and Cleanup alSourcePlay(source); // Wait or loop until source stops ALint state; do alGetSourcei(source, AL_SOURCE_STATE, &state); while (state == AL_PLAYING); alDeleteSources(1, &source); alDeleteBuffers(1, &buffer); alcDestroyContext(context); alcCloseDevice(device); Advanced Configuration: alsoft.conf One of the greatest strengths of OpenAL 2.0.7.0 is the alsoft.conf configuration file. On Windows, it resides in %APPDATA%\alsoft.ini ; on Linux, ~/.alsoftrc . Sample Configuration for Gaming [general] drivers = alsa,pulseaudio,wasapi channels = stereo sample-type = float32 period_size = 512 [hrft] default = true hrtf = builtin brew install openal-soft Let’s create a minimal C
To verify version: apt-cache show libopenal1 | grep Version (should show 1:2.0.7.0-...). Homebrew provides it: Designed as a cross-platform
Introduction: What is OpenAL? In the world of multimedia programming, few libraries have stood the test of time as gracefully as OpenAL – the Open Audio Library . Designed as a cross-platform, vendor-neutral API for rendering 3D spatialized audio, OpenAL provides developers with the tools to create immersive soundscapes. The version 2.0.7.0 represents a significant, stable milestone in the library’s evolution.
[debug] level = warning To enable personalized 3D audio on headphones:
[effect] reverb = on max_sends = 4