Class: JackAudio (private in SoundStream

• Inheritance
• Description
• Class protocol
  • queries
• Instance protocol
  • open & close
  • queries

Inheritance:

   Object
   |
   +--Stream
      |
      +--PeekableStream
         |
         +--PositionableStream
            |
            +--WriteStream
               |
               +--ReadWriteStream
                  |
                  +--ExternalStream
                     |
                     +--FileStream
                        |
                        +--SoundStream
                           |
                           +--SoundStream::JackAudio

Package:

stx:libbasic2

Category:

Streams-External

Owner:

SoundStream

Description:

interface to the jack audio system

Class protocol:

 defaultAudioFormat

 isSupported

SoundStream::JackAudio isSupported
SoundStream::PortAudio isSupported
SoundStream::CoreAudio isSupported

Instance protocol:

 closeFile

a stream has been collected - close the file

 openWithMode: aMode attributes: attributeSpec

normally not reached

 reopenStream

 supportedAudioFormats

return a collection of supported audio formats.
possibly returned symbols are:
U8 unsigned 8bit samples
S8 signed 8bit samples
U16 unsigned 16bit samples in native format
U16_LE unsigned 16bit big endian samples
U16_BE unsigned 16bit big endian samples
S16 signed 16bit little endian samples in native format
S16_LE signed 16bit little endian samples
S16_BE signed 16bit big endian samples
S24 signed 24bit little endian samples in native format
S24_LE signed 24bit little endian samples
S24_BE signed 24bit big endian samples
S32 signed 32bit little endian samples in native format
S32_LE signed 32bit little endian samples
S32_BE signed 32bit big endian samples
F16 float samples
F32 float samples
MPEG audio mpeg encoded
MU_LAW u-law encoded 8bit samples
A_LAW a-law encoded 8bit samples
IMA_ADPCM adpcm encoded
the set of returned symbols depends on the underlying sound hardware.

Usage example(s):

|s formats| s := self writing. formats := s supportedAudioFormats. s close. formats