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