OpenAL Extensions

Multi-Platform Extensions

• ALC_ENUMERATION_EXT -- enumeration of available devices (sample code in altest)
• ALC_EXT_CAPTURE -- capture functionality; documentation is in the OpenAL 1.1 Specification
• AL_EXT_MP3 -- MP3 audio format support

Linux/Standard Implementation Extensions

• ALC_LOKI_audio_channel -- get/set the volume settings for the current context
• LOKI_buffer_data_callback -- a buffer callback mechanism
• LOKI_IMA_ADPCM_format -- ADPCM format
• LOKI_WAVE_format -- WAVE format
• LOKI_play_position -- playback position query
• LOKI_quadriphonic -- 4 speaker rendering
• EXT_vorbis -- Ogg Vorbis buffer format

MacOS Extensions:

• ALC_EXT_MAC_OSX : A Mac OSX-specific extension set.
• ALC_EXT_STATIC_BUFFER : Support for buffers at a static memory location ("no copy buffers").
• ALC_EXT_ASA : Apple Spatial Audio extension.
• ALC_EXT_ASA_ROGER_BEEP : Extends the Apple Spatial Audio Extension (ALC_EXT_ASA) with a Roger Beep Effect when the RogerBeep AudioUnit is present on the system
• ALC_EXT_ASA_DISTORTION : Extends the Apple Spatial Audio Extension (ALC_EXT_ASA) with a Distortion Effect when the Distortion AudioUnit is present on the system

Windows Extensions:

• EAX2.0 -- EAX 2.0 calls
• EAX3.0 -- EAX 3.0 calls
• EAX4.0 -- EAX 4.0 calls
• EAX5.0 -- EAX 5.0 calls
• ALC_EXT_EFX -- Effects Extension (documentation in the OpenAL SDK at developer.creative.com)
• EAX_RAM -- XRAM support (documentation in the OpenAL SDK at developer.creative.com)
• AL_EXT_ALAW -- ALAW audio format support
• AL_EXT_DOUBLE -- double audio format support
• AL_EXT_FLOAT32 -- float32 audio format support
• AL_EXT_IMA4 -- IMA4 audio format support
• AL_EXT_MULAW -- MULAW audio format support
• AL_EXT_MCFORMATS -- multi-channel audio format support