On Mon, 19 Dec 2016 10:52:57 +0000 holger@xxxxxxxxxxxxx wrote: > 19. Dezember 2016 11:35 Uhr, hollundertee@xxxxxxx schrieb: > > On Wed, 16 Nov 2016 07:04:04 +0000 > > holger@xxxxxxxxxxxxx wrote: > > > >> Hi lista :) > >> > >> Using an i3 (https://i3wm.org/docs/userguide.html#exec) > >> shortcut, I can control my jack transport from everywhere, even > >> when no jack application has focus : > >> > >> bindsym $mod+p exec echo play | jack_transport > >> bindsym $mod+Shift+p exec echo stop | jack_transport > >> > >> Thanks to FalkTX for the pipe trick BTW, I saw that on > >> linuxmusicians ; This is very cool if you have some sort of > >> wireless keyboard, but as you can see it's two different > >> keystrokes, how do I make it so toggles play/pause? Alternatively, > >> how do I know when jack transport is rolling, so I can hack my way > >> into making my own toggle script? I did my homework and read the > >> inline --help of all the available jack commands on my machine : > >> With this patch, jack_transport should be able to toggle. I will > >> suggest it to the jack-develop list but would be happy if some > >> else can test it. Holger > >> > >> ----------------- > >> > >> diff --git a/example-clients/transport.c > >> b/example-clients/transport.c index c543b41..0b1130f 100644 > >> --- a/example-clients/transport.c > >> +++ b/example-clients/transport.c > >> @@ -211,6 +211,29 @@ static void com_timeout(char *arg) > >> jack_set_sync_timeout(client, (jack_time_t) (timeout*1000000)); > >> } > >> +/* Set sync timeout in seconds. */ > >> +static void com_toggle(char *arg) > >> +{ > >> + jack_position_t current; > >> + jack_transport_state_t transport_state; > >> + > >> + transport_state = jack_transport_query (client, ¤t); > >> + > >> + switch (transport_state) { > >> + case JackTransportStopped: > >> + com_play( arg ); > >> + break; > >> + case JackTransportRolling: > >> + com_stop( arg ); > >> + break; > >> + case JackTransportStarting: > >> + printf ("state: Starting - no transport toggling"); > >> + break; > >> + default: > >> + printf ("state: Unknown - no transport toggling"); > >> + } > >> +} > >> + > >> /* Command parsing based on GNU readline info examples. */ > >> @@ -238,6 +261,7 @@ command_t commands[] = { > >> {"stop", com_stop, "Stop transport"}, > >> {"tempo", com_tempo, "Set beat tempo "}, > >> {"timeout", com_timeout, "Set sync timeout in "}, > >> + {"toggle", com_toggle, "Toggle transport rolling"}, > >> {"?", com_help, "Synonym for `help'" }, > >> {(char *)NULL, (cmd_function_t *)NULL, (char *)NULL } > >> }; > > > > Thanks guys, > > > > I was just browsing the list for nice Linux Audio music when I found > > this thread, which is just what I needed as well :) > > In my case the purpose is for screencasts. > > I plan to record the screen using SimpleScreenRecorder and audio > > through jack into Ardour or somesuch. The problem I had was that if > > I start SSR and Ardour separately I need to manually align A/V > > later. It is simpler if A/V starts at the same time. > > > > I was thinking of starting jack transport through qjackctl or > > somesuch, using the CLI did not occur to me. > > > > SSR lacks jack transport control, but I think assigning the same > > hotkey to SSR and jack transport should work just fine. I guess I > > still need to take the alsa/jacks latency into account, but at > > least that should be small and constant. > > > > Does anyone have a better idea? > > > > @Holger: Thanks, but patching a jack example client requires > > maintenance since this change would be lost with each new jack > > package coming through the repo. > > > > Regards, > > Philipp > > > > _______________________________________________ > > Linux-audio-user mailing list > > Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > > http://lists.linuxaudio.org/listinfo/linux-audio-user > > I know, I know... > that's why I wanted to send it to the Jack list to get it applied... > I still did not do it sorry. Will try to send it this evening... > > Holger > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > http://lists.linuxaudio.org/listinfo/linux-audio-user Hey, no need to say sorry. Thanks for writing the patch. If it gets applied it will make such scripts simpler in the future. Regards, Philipp _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
