74 lines
2.1 KiB
Nim
74 lines
2.1 KiB
Nim
import std/[logging, os]
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import jacket
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import signal
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var jclient: ClientTPtr
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var status: cint
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var exitSignalled: bool = false
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var log = newConsoleLogger(when defined(release): lvlInfo else: lvlDebug)
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proc cleanup(sig: cint = 0) =
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debug "Cleaning up..."
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if jclient != nil:
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discard jclient.deactivate()
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discard jclient.clientClose()
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jclient = nil
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proc errorCb(msg: cstring) {.cdecl.} =
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# Suppress verbose JACK error messages when server is not available by
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# default. Pass ``lvlAll`` when creating the logger to enable them.
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debug "JACK error: " & $msg
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proc signalCb(sig: cint) {.noconv.} =
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info "Received signal: " & $sig
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exitSignalled = true
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proc shutdownCb(arg: pointer = nil) {.cdecl.} =
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info "JACK server has shut down."
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exitSignalled = true
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proc portConnected(portA: PortIdT; portB: PortIdT; connect: cint; arg: pointer) {.cdecl.} =
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let portAPtr = jclient.portById(portA)
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let portBPtr = jclient.portById(portB)
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if portAPtr != nil:
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echo("Port A: ", portName(portAPtr))
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else:
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echo "Port A: <unknown>"
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if portAPtr != nil:
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echo("Port B: ", portName(portBPtr))
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else:
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echo "Port B: <unknown>"
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echo("Action: ", if connect > 0: "connect" else: "disconnect")
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addHandler(log)
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setErrorFunction(errorCb)
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jclient = clientOpen("jacket_port_connect_cb", NoStartServer.ord, status.addr)
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debug "JACK server status: " & $status
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if jclient == nil:
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error getJackStatusErrorString(status)
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quit QuitFailure
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when defined(windows):
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setSignalProc(signalCb, SIGABRT, SIGINT, SIGTERM)
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else:
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setSignalProc(signalCb, SIGABRT, SIGHUP, SIGINT, SIGQUIT, SIGTERM)
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discard jclient.portRegister("in_1", JACK_DEFAULT_AUDIO_TYPE, PortIsInput.ord, 0)
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discard jclient.portRegister("out_1", JACK_DEFAULT_AUDIO_TYPE, PortIsOutput.ord, 0)
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if jclient.setPortConnectCallback(portConnected, nil) != 0:
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error "Error: could not set JACK port connection callback."
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jclient.onShutdown(shutdownCb, nil)
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if jclient.activate() == 0:
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while not exitSignalled:
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sleep(50)
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cleanup()
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