jacket/examples/jacket_transport_query.nim
Christopher Arndt 3915638e73
feat: stream-line API and fix minor wrapping errors (#1)
* Rename types:
   * `ptr` types have no suffix (e.g. `ClientP` -> `Client`)
   * normal object types hyve a `T` suffix, if needed (e.g. `Port` -> `PortT`)
   * Constants also use CamelCase (UPPER_CASE can still be used).
* Make functions returning an error discardable
* Add missing return types for some functions.

Signed-off-by: Christopher Arndt <chris@chrisarndt.de>
2025-01-20 02:16:38 +01:00

55 lines
1.5 KiB
Nim

import std/[logging, strformat]
import jacket
var
jclient: Client
status: cint
pos: PositionT
transportState: TransportState
var log = newConsoleLogger(when defined(release): lvlInfo else: lvlDebug)
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
addHandler(log)
setErrorFunction(errorCb)
jclient = clientOpen("jacket_info", NullOption, status.addr)
debug "JACK server status: " & $status
if jclient == nil:
error getJackStatusErrorString(status)
quit 1
transportState = transportQuery(jclient, pos.addr)
echo fmt"usecs: {pos.usecs}"
echo fmt"frameRate: {pos.frameRate}"
echo fmt"frame: {pos.frame}"
echo fmt"valid: {pos.valid.ord}"
if bool(pos.valid.ord and PositionBBT.ord):
echo fmt"bar: {pos.bar}"
echo fmt"beat: {pos.beat}"
echo fmt"tick: {pos.tick}"
echo fmt"barStartTick: {pos.barStartTick}"
echo fmt"beatsPerBar: {pos.beatsPerBar}"
echo fmt"beatType: {pos.beatType}"
echo fmt"beatsPerMinute: {pos.beatsPerMinute}"
case transportState
of TransportStopped:
echo "JACK transport stopped, starting it now."
transportStart(jclient)
of TransportRolling:
echo "JACK transport rolling, stopping it now."
transportStop(jclient)
of TransportStarting:
echo "JACK transport starting, nothing to do."
else:
echo "Unknown JACK transport state."
jclient.clientClose()