# Predefined Constants

The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.

`ALC_FREQUENCY` (int)
  Context Attribute
`ALC_REFRESH` (int)
  Context Attribute
`ALC_SYNC` (int)
  Context Attribute
`AL_FREQUENCY` (int)
  Buffer Setting
`AL_BITS` (int)
  Buffer Setting
`AL_CHANNELS` (int)
  Buffer Setting
`AL_SIZE` (int)
  Buffer Setting
`AL_BUFFER` (int)
  Source/Listener Setting (Integer)
`AL_SOURCE_RELATIVE` (int)
  Source/Listener Setting (Integer)
`AL_SOURCE_STATE` (int)
  Source/Listener Setting (Integer)
`AL_PITCH` (int)
  Source/Listener Setting (Float)
`AL_GAIN` (int)
  Source/Listener Setting (Float)
`AL_MIN_GAIN` (int)
  Source/Listener Setting (Float)
`AL_MAX_GAIN` (int)
  Source/Listener Setting (Float)
`AL_MAX_DISTANCE` (int)
  Source/Listener Setting (Float)
`AL_ROLLOFF_FACTOR` (int)
  Source/Listener Setting (Float)
`AL_CONE_OUTER_GAIN` (int)
  Source/Listener Setting (Float)
`AL_CONE_INNER_ANGLE` (int)
  Source/Listener Setting (Float)
`AL_CONE_OUTER_ANGLE` (int)
  Source/Listener Setting (Float)
`AL_REFERENCE_DISTANCE` (int)
  Source/Listener Setting (Float)
`AL_POSITION` (int)
  Source/Listener Setting (Float Vector)
`AL_VELOCITY` (int)
  Source/Listener Setting (Float Vector)
`AL_DIRECTION` (int)
  Source/Listener Setting (Float Vector)
`AL_ORIENTATION` (int)
  Source/Listener Setting (Float Vector)
`AL_FORMAT_MONO8` (int)
  PCM Format
`AL_FORMAT_MONO16` (int)
  PCM Format
`AL_FORMAT_STEREO8` (int)
  PCM Format
`AL_FORMAT_STEREO16` (int)
  PCM Format
`AL_INITIAL` (int)
  Source State
`AL_PLAYING` (int)
  Source State
`AL_PAUSED` (int)
  Source State
`AL_STOPPED` (int)
  Source State
`AL_LOOPING` (int)
  Source State
`AL_TRUE` (int)
  Boolean value recognized by OpenAL
`AL_FALSE` (int)
  Boolean value recognized by OpenAL