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  • Committer: Bazaar Package Importer
  • Author(s): Luca Falavigna
  • Date: 2008-12-06 11:05:15 UTC
  • mfrom: (4.1.3 sid)
  • Revision ID: james.westby@ubuntu.com-20081206110515-xa9v9pajr9jqvfvg
Tags: 0.115.6-1ubuntu1
* Merge from Debian unstable, remaining Ubuntu changes:
  - Redirect stderr in bash completion (Debian #504488).

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example-clients/showtime.c
 
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#include <stdio.h>
 
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#include <errno.h>
 
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#include <unistd.h>
 
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#include <signal.h>
 
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#include <stdlib.h>
 
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#include <jack/jack.h>
 
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#include <jack/transport.h>
 
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jack_client_t *client;
 
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void
 
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showtime ()
 
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{
 
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        jack_position_t current;
 
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        jack_transport_state_t transport_state;
 
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        jack_nframes_t frame_time;
 
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        transport_state = jack_transport_query (client, &current);
 
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        frame_time = jack_frame_time (client);
 
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        printf ("frame: %7" PRIu32 " @ %" PRIu32 "\t", current.frame, frame_time);
 
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        switch (transport_state) {
 
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        case JackTransportStopped:
 
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                printf ("state: Stopped");
 
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                break;
 
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        case JackTransportRolling:
 
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                printf ("state: Rolling");
 
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                break;
 
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        case JackTransportStarting:
 
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                printf ("state: Starting");
 
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                break;
 
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        default:
 
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                printf ("state: [unknown]");
 
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        }
 
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        if (current.valid & JackPositionBBT)
 
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                printf ("\tBBT: %3" PRIi32 "|%" PRIi32 "|%04"
 
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                        PRIi32, current.bar, current.beat, current.tick);
 
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        if (current.valid & JackPositionTimecode)
 
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                printf ("\tTC: (%.6f, %.6f)",
 
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                        current.frame_time, current.next_time);
 
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        if (current.valid & JackBBTFrameOffset)
 
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                printf ("\tBBT offset: (%" PRIi32 ")",
 
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                        current.bbt_offset);
 
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        if (current.valid & JackAudioVideoRatio)
 
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                printf ("\taudio/video: (%f)",
 
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                        current.audio_frames_per_video_frame);
 
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        if (current.valid & JackVideoFrameOffset) {
 
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                if (current.video_offset) {
 
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                        printf ("\t video@: (%" PRIi32 ")", current.video_offset);
 
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                } else {
 
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                        printf ("\t no video");
 
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                }
 
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        }
 
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        printf ("\n");
 
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}
 
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void
 
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jack_shutdown (void *arg)
 
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{
 
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        exit (1);
 
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}
 
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void
 
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signal_handler (int sig)
 
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{
 
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        jack_client_close (client);
 
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        fprintf (stderr, "signal received, exiting ...\n");
 
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        exit (0);
 
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}
 
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int
 
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main (int argc, char *argv[])
 
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{
 
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        /* try to become a client of the JACK server */
 
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        if ((client = jack_client_new ("showtime")) == 0) {
 
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                fprintf (stderr, "jack server not running?\n");
 
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                return 1;
 
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        }
 
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        signal (SIGQUIT, signal_handler);
 
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        signal (SIGTERM, signal_handler);
 
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        signal (SIGHUP, signal_handler);
 
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        signal (SIGINT, signal_handler);
 
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        /* tell the JACK server to call `jack_shutdown()' if
 
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           it ever shuts down, either entirely, or if it
 
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           just decides to stop calling us.
 
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        */
 
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        jack_on_shutdown (client, jack_shutdown, 0);
 
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        /* tell the JACK server that we are ready to roll */
 
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        if (jack_activate (client)) {
 
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                fprintf (stderr, "cannot activate client");
 
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                return 1;
 
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        }
 
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        while (1) {
 
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                usleep (20);
 
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                showtime ();
 
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        }
 
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        jack_client_close (client);
 
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        exit (0);
 
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}