About /usr/src/jetson_multimedia_api/samples/unittest_samples/camera_unit_sample

Robotics & Edge Computing Jetson & Embedded Systems Jetson Orin Nano
1

我在使用这个例子的时候，最后退出的时候，经常会出现kworker/2:2-4647 [002] … 11056.569150: rtcpu_vinotify_error: tstamp:345997164578 cch:0 vi:1 tag:CHANSEL_NOMATCH channel:0xc4 frame:189 vi_tstamp:11071909220128 data:0x0000000000000589
kworker/2:2-4647 [002] … 11056.569151: rtcpu_vinotify_error: tstamp:345997165243 cch:-1 vi:1 tag:CHANSEL_NOMATCH channel:0x84 frame:87 vi_tstamp:11071909225408 data:0x0000000000000589
kworker/2:2-4647 [002] … 11056.624911: rtcpu_vinotify_error: tstamp:345997844281 cch:0 vi:1 tag:CHANSEL_NOMATCH channel:0xc4 frame:190 vi_tstamp:11071930970880 data:0x0000000000000589
kworker/2:2-4647 [002] … 11056.624912: rtcpu_vinotify_error: tstamp:345997844941 cch:-1 vi:1 tag:CHANSEL_NOMATCH channel:0x84 frame:88 vi_tstamp:11071930976160 data:0x0000000000000589
kworker/2:2-4647 [002] … 11056.624917: rtcpu_vinotify_error: tstamp:345998524670 cch:0 vi:1 tag:CHANSEL_NOMATCH channel:0xc4 frame:191 vi_tstamp:11071952743296 data:0x0000000000000589
类似这种打印，，我查看代码发现退出 pthread_mutex_lock(&ctx.queue_lock);
ctx.dqthread_running = true;
pthread_create(&ctx.cam_dq_thread, NULL, dq_thread, &ctx);
pthread_mutex_unlock(&ctx.queue_lock);

这个dq_thread线程的时候会花很长时间，然后有几率退不出，
/* Close the opened V4L2 device. */

    ret = v4l2_close(ctx.fd);
    if (ret)
    {
        cerr << "Unable to close the device" << endl;
        ctx.in_error = 1;
    }

}v4l2_close 就会无法成功关闭。我能怎么解决这个问题，你们对此有什么优化吗。

3

Hi,
We suggest run the Argus samples and check if the issue is present:

/usr/src/jetson_multimedia_api/samples/09_argus_camera_jpeg/
/usr/src/jetson_multimedia_api/samples/10_argus_camera_recording/

From the print it looks like the camera does not generate valid frame data. May be an issue in stability of the camera source. Suggest try other samples and see if the issue is still present.

5

This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.