refactor: more examples streamlining

Signed-off-by: Christopher Arndt <chris@chrisarndt.de>

examples/test_jacket.nim

@@ -1,30 +1,30 @@
+import std/logging
 import jacket
 
 var jclient: ClientTPtr
-var time: TimeT
 var status: cint
+var log = newConsoleLogger(lvlInfo)
 
-jclient = clientOpen("test_jacket", NullOption.ord, addr status)
+proc errorCb(msg: cstring) {.cdecl.} =
+    # Suppress verbose JACK error messges when server is not available by 
+    # default. Pass ``lvlAll`` when creating the logger to enable them.
+    debug "JACK error: " & $msg
 
-echo "Server status: " & $status
+addHandler(log)
+setErrorFunction(errorCb)
+jclient = clientOpen("test_jacket", NullOption.ord, status.addr)
+debug "Server status: " & $status
 
 if jclient == nil:
-    echo getJackStatusErrorString(status)
+    error getJackStatusErrorString(status)
     quit 1
 
-time = getTime()
-let ver = getVersionString()
-echo "JACK version: " & $ver
-let rate = getSampleRate(jclient)
-echo "Sample rate: " & $rate
-let bufsize = getBufferSize(jclient)
-echo "Buffer size: " & $bufsize
-let load = cpuLoad(jclient)
-echo "DSP load: " & $load & "%"
-echo "Server time: " & $time
-let name = getClientName(jclient)
-echo "Client name: " & $name
-let rt = if isRealtime(jclient) > 0: "yes" else: "no"
-echo "RT enabled: " & rt
+echo("JACK version: ", getVersionString())
+echo("Sample rate: ", jclient.getSampleRate)
+echo("Buffer size: ", jclient.getBufferSize)
+echo("DSP load: ", jclient.cpuLoad, "%")
+echo("Server time: ", getTime())
+echo("Client name: ", jclient.getClientName)
+echo("RT enabled: ", if jclient.isRealtime > 0: "yes" else: "no")
 
-discard clientClose(jclient)
+discard jclient.clientClose

examples/test_port_connect_cb.nim

@@ -1,55 +1,61 @@
-import std/os
+import std/[logging, os]
 import jacket
 
 var jclient: ClientTPtr
 var status: cint
+var log = newConsoleLogger(lvlInfo)
+
+proc errorCb(msg: cstring) {.cdecl.} =
+    # Suppress verbose JACK error messages when server is not available by
+    # default. Pass ``lvlAll`` when creating the logger to enable them.
+    debug "JACK error: " & $msg
 
 proc cleanup() {.noconv.} =
-    echo "Cleaning up..."
+    debug "Cleaning up..."
 
     if jclient != nil:
-        discard deactivate(jclient)
-        discard clientClose(jclient)
+        discard jclient.deactivate()
+        discard jclient.clientClose()
         jclient = nil
 
-    quit 0
+    quit QuitSuccess
 
 proc portConnected(portA: PortIdT; portB: PortIdT; connect: cint; arg: pointer) {.cdecl.} =
-    let portAPtr = portById(jclient, portA)
-    let portBPtr = portById(jclient, portB)
+    let portAPtr = jclient.portById(portA)
+    let portBPtr = jclient.portById(portB)
     
     if portAPtr != nil:
-        echo "Port A: " & $portName(portAPtr)
+        echo("Port A: ", portName(portAPtr))
     else:
         echo "Port A: <unknown>"
 
     if portAPtr != nil:
-        echo "Port B: " & $portName(portBPtr)
+        echo("Port B: ", portName(portBPtr))
     else:
         echo "Port B: <unknown>"
         
-    echo "Action: " & (if connect > 0: "connect" else: "disconnect")
+    echo("Action: ", if connect > 0: "connect" else: "disconnect")
     
 
-jclient = clientOpen("jacket_port_register", NoStartServer.ord, addr status)
-
-echo "Server status: " & $status
+addHandler(log)
+setErrorFunction(errorCb)
+jclient = clientOpen("jacket_port_register", NoStartServer.ord, status.addr)
+debug "Server status: " & $status
 
 if jclient == nil:
-    echo getJackStatusErrorString(status)
+    error getJackStatusErrorString(status)
     quit 1
 
 setControlCHook(cleanup)
 
-discard portRegister(jclient, "in_1", JACK_DEFAULT_AUDIO_TYPE, PortIsInput.ord, 0)
-discard portRegister(jclient, "out_1", JACK_DEFAULT_AUDIO_TYPE, PortIsOutput.ord, 0)
+discard jclient.portRegister("in_1", JACK_DEFAULT_AUDIO_TYPE, PortIsInput.ord, 0)
+discard jclient.portRegister("out_1", JACK_DEFAULT_AUDIO_TYPE, PortIsOutput.ord, 0)
 
-if setPortConnectCallback(jclient, portConnected, nil) != 0:
-    echo "Error: could not set port connection callback."
+if jclient.setPortConnectCallback(portConnected, nil) != 0:
+    error "Error: could not set port connection callback."
 
-discard activate(jclient)
-
-while true:
+if jclient.activate() == 0:
+    while true:
         sleep(50)
 
 cleanup()

examples/test_port_register.nim

@@ -1,31 +1,37 @@
-import std/os
+import std/[logging, os]
 import jacket
 
 var jclient: ClientTPtr
 var status: cint
+var log = newConsoleLogger(lvlInfo)
+
+proc errorCb(msg: cstring) {.cdecl.} =
+    # Suppress verbose JACK error messages when server is not available by
+    # default. Pass ``lvlAll`` when creating the logger to enable them.
+    debug "JACK error: " & $msg
 
 proc cleanup() {.noconv.} =
-    echo "Cleaning up..."
+    debug "Cleaning up..."
     
     if jclient != nil:
-        discard clientClose(jclient)
+        discard jclient.clientClose
         jclient = nil
     
-    quit 0
+    quit QuitSuccess
 
-
-jclient = clientOpen("jacket_port_register", NoStartServer.ord or UseExactName.ord, addr status)
-
-echo "Server status: " & $status
+addHandler(log)
+setErrorFunction(errorCb)
+jclient = clientOpen("jacket_port_register", NoStartServer.ord or UseExactName.ord, status.addr)
+debug "Server status: " & $status
 
 if jclient == nil:
-    echo getJackStatusErrorString(status)
+    error getJackStatusErrorString(status)
     quit 1
 
 setControlCHook(cleanup)
 
-discard portRegister(jclient, "in_1", JACK_DEFAULT_AUDIO_TYPE, PortIsInput.ord, 0)
-discard portRegister(jclient, "out_1", JACK_DEFAULT_AUDIO_TYPE, PortIsOutput.ord, 0)
+discard jclient.portRegister("in_1", JACK_DEFAULT_AUDIO_TYPE, PortIsInput.ord, 0)
+discard jclient.portRegister("out_1", JACK_DEFAULT_AUDIO_TYPE, PortIsOutput.ord, 0)
 
 while true:
     sleep(50)

jacket.nim

@@ -1,27 +1,22 @@
 # jacket.nim
 
 
-# Possible names/install locations of libjack, according to
+# Possible names/install locations of libjack, according to:
 # https://github.com/x42/weakjack/blob/master/weak_libjack.c#L108
-# 
-# MacOS:
-# * /usr/local/lib/libjack.dylib
-# * /opt/homebrew/lib/libjack.dylib
-# * /opt/local/lib/libjack.dylib
-# Win:
-# * libjack64.dll
-# * libjack.dll
-# Unix:
-# * libjack.so.0
 proc getJackLibName: string =
     when system.hostOS == "windows":
+        when sizeof(int) == 4:
             result = "libjack.dll"
+        else:
+            result = "libjack64.dll"
     elif system.hostOS == "macosx":
-        result = "libjack.dylib"
+        result = "(|/usr/local/lib/|/opt/homebrew/lib/|/opt/local/lib/)libjack.dylib"
     else:
         result = "libjack.so.0"
   
 {.push dynlib: getJackLibName().}
+# ------------------------------ Constants --------------------------------
+
 const
     JACK_MAX_FRAMES* = (4294967295'i64)
     JACK_LOAD_INIT_LIMIT* = 1024
@@ -43,7 +38,6 @@ type
     PortT = distinct object
     PortTPtr* = ptr PortT
 
-
 type
     JackOptions* {.size: sizeof(cint) pure.} = enum
         NullOption = 0x00,
@@ -56,7 +50,7 @@ type
 
 type
     JackStatus* {.size: sizeof(cint).} = enum
-        Success = 0x00
+        Success = 0x00,
         Failure = 0x01,
         InvalidOption = 0x02,
         NameNotUnique = 0x04,
@@ -455,6 +449,8 @@ proc setInfoFunction*(infoCallback: JackInfoCallback) {.importc: "jack_set_info_
 
 {.pop.}
 
+# --------------------------- Helper functions ----------------------------
+
 proc getJackStatusErrorString*(status: cint): string =
     # Get JACK error status as string.
     if status == Success.ord: