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36 lines
1.7 KiB
Text
36 lines
1.7 KiB
Text
jackdmp (aka JACK2) is a C++ version of the JACK low-latency audio
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server for multi-processor machines. It is a new implementation
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of the JACK server core features that aims in removing some
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limitations of the JACK1 design. The activation system has been
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changed for a data flow model and lock-free programming techniques
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for graph access have been used to have a more dynamic and
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robust system.
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- jackdmp use a new client activation model that allows simultaneous
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client execution (on a smp machine) when parallel clients exist
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in the graph (client that have the same inputs). This activation model
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allows to better use available CPU on a smp machine, but also works
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on a mono-processor machine.
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- jackdmp use a lock-free way to access (read/write) the client graph,
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thus allowing connections/disconnection to be done without
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interrupting the audio stream. The result is that
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connections/disconnections are glitch-free.
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- jackdmp can work in 2 different modes at the server level :
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- synchronous activation : in a given cycle, the server waits for
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all clients to be finished (similar to normal jackd)
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- asynchronous activation : in a given cycle, the server does not
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wait for all clients to be finished and use output buffer
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computed the previous cycle.
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The audible result of this mode is that if a client is not activated
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during one cycle, other clients may still run and the resulting audio
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stream will still be produced (even if its partial in some way).
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This mode usually result in fewer (less audible) audio glitches in a
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loaded system.
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NOTE: this package conflicts with jack-audio-connection-kit: install
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only one of the two.
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Optional dependencies are celt, libffado and opus.
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