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diff --git a/audio/jack2/README b/audio/jack2/README new file mode 100644 index 0000000000..3f78bb9b4a --- /dev/null +++ b/audio/jack2/README @@ -0,0 +1,36 @@ +jackdmp (aka JACK2) is a C++ version of the JACK low-latency audio +server for multi-processor machines. It is a new implementation +of the JACK server core features that aims in removing some +limitations of the JACK1 design. The activation system has been +changed for a data flow model and lock-free programming techniques +for graph access have been used to have a more dynamic and +robust system. + +- jackdmp use a new client activation model that allows simultaneous +client execution (on a smp machine) when parallel clients exist +in the graph (client that have the same inputs). This activation model +allows to better use available CPU on a smp machine, but also works +on a mono-processor machine. + +- jackdmp use a lock-free way to access (read/write) the client graph, +thus allowing connections/disconnection to be done without +interrupting the audio stream. The result is that +connections/disconnections are glitch-free. + +- jackdmp can work in 2 different modes at the server level : + - synchronous activation : in a given cycle, the server waits for + all clients to be finished (similar to normal jackd) + - asynchronous activation : in a given cycle, the server does not + wait for all clients to be finished and use output buffer + computed the previous cycle. + +The audible result of this mode is that if a client is not activated +during one cycle, other clients may still run and the resulting audio +stream will still be produced (even if its partial in some way). +This mode usually result in fewer (less audible) audio glitches in a +loaded system. + +NOTE: this package conflicts with jack-audio-connection-kit: install +only one of the two. + +Optional dependencies are celt, libffado and opus. |