zymon/PortAudio.jl
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adds stop usage examples to README

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Spencer Russell 2014-01-05 23:00:50 -05:00
parent 38c1499e6f
commit c1212692a0
1 changed files with 11 additions and 5 deletions
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README.md
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@ -34,7 +34,11 @@ AudioNodes
In addition to the basic `play` function you can create more complex networks In addition to the basic `play` function you can create more complex networks
of AudioNodes in a render chain. In fact, when using the basic `play` to play of AudioNodes in a render chain. In fact, when using the basic `play` to play
an Array, behind the scenes an instance of the ArrayPlayer type is created an Array, behind the scenes an instance of the ArrayPlayer type is created
and added to the master AudioMixer inputs. and added to the master AudioMixer inputs. Audionodes also implement a `stop`
function, which will remove them from the render graph. When an implicit
AudioNode is created automatically, such as when using `play` on an Array, the
`play` function should return the audio node that is playing the Array, so it
can be stopped if desired.
To explictly do the same as above: To explictly do the same as above:
@ -48,16 +52,18 @@ To generate 2 sin tones:
julia> osc2 = SinOsc(660) julia> osc2 = SinOsc(660)
julia> play(osc1) julia> play(osc1)
julia> play(osc2) julia> play(osc2)
julia> stop(osc1)
julia> stop(osc2)
All AudioNodes should implement a `render` function that can be called to All AudioNodes must implement a `render` function that can be called to
retreive the next block of audio. retreive the next block of audio.
AudioStreams AudioStreams
------------ ------------
AudioStreams represent a destination for audio, such as the sound card. The AudioStreams represent an external source or destination for audio, such as the
`play` function attaches AudioNodes to the default stream unless a stream is sound card. The `play` function attaches AudioNodes to the default stream
given as the 2nd argument. unless a stream is given as the 2nd argument.
AudioStream is an abstract type, which currently has a PortAudioStream subtype AudioStream is an abstract type, which currently has a PortAudioStream subtype
that writes to the sound card, and a TestAudioStream that is used in the unit that writes to the sound card, and a TestAudioStream that is used in the unit