Esempio n. 1
0
/**
 * Device removed callback
 *
 * We stop recording here so we don't block the device node
 */
static void device_removed(const char *dev, void *vptr)
{
	V4L2_DATA(vptr);

	obs_source_update_properties(data->source);

	if (strcmp(data->device_id, dev))
		return;

	blog(LOG_INFO, "Device %s disconnected", dev);

	v4l2_terminate(data);
}
Esempio n. 2
0
/**
 * Device removed callback
 *
 * We stop recording here so we don't block the device node
 */
static void device_removed(void *vptr, calldata_t *calldata)
{
	V4L2_DATA(vptr);

	obs_source_update_properties(data->source);

	const char *dev;
	calldata_get_string(calldata, "device", &dev);

	if (strcmp(data->device_id, dev))
		return;

	blog(LOG_INFO, "Device %s disconnected", dev);

	v4l2_terminate(data);
}
Esempio n. 3
0
static void v4l2_destroy(void *vptr)
{
	V4L2_DATA(vptr);

	if (!data)
		return;

	v4l2_terminate(data);

	if (data->device_id)
		bfree(data->device_id);

#if HAVE_UDEV
	v4l2_unref_udev(data->udev);
#endif

	bfree(data);
}
Esempio n. 4
0
/**
 * Update the settings for the v4l2 source
 *
 * Since there are very few settings that can be changed without restarting the
 * stream we don't bother to even try. Whenever this is called the currently
 * active stream (if exists) is stopped, the settings are updated and finally
 * the new stream is started.
 */
static void v4l2_update(void *vptr, obs_data_t *settings)
{
	V4L2_DATA(vptr);

	v4l2_terminate(data);

	if (data->device_id)
		bfree(data->device_id);

	data->device_id  = bstrdup(obs_data_get_string(settings, "device_id"));
	data->input      = obs_data_get_int(settings, "input");
	data->pixfmt     = obs_data_get_int(settings, "pixelformat");
	data->standard   = obs_data_get_int(settings, "standard");
	data->dv_timing  = obs_data_get_int(settings, "dv_timing");
	data->resolution = obs_data_get_int(settings, "resolution");
	data->framerate  = obs_data_get_int(settings, "framerate");
	data->sys_timing = obs_data_get_bool(settings, "system_timing");

	v4l2_init(data);
}
Esempio n. 5
0
static void v4l2_destroy(void *vptr)
{
	V4L2_DATA(vptr);

	if (!data)
		return;

	v4l2_terminate(data);

	if (data->device_id)
		bfree(data->device_id);

#if HAVE_UDEV
	signal_handler_t *sh = v4l2_get_udev_signalhandler();

	signal_handler_disconnect(sh, "device_added", device_added, data);
	signal_handler_disconnect(sh, "device_removed", device_removed, data);

	v4l2_unref_udev();
#endif

	bfree(data);
}
Esempio n. 6
0
/**
 * Initialize the v4l2 device
 *
 * This function:
 * - tries to open the device
 * - sets pixelformat and requested resolution
 * - sets the requested framerate
 * - maps the buffers
 * - starts the capture thread
 */
static void v4l2_init(struct v4l2_data *data)
{
	uint32_t input_caps;
	int fps_num, fps_denom;

	blog(LOG_INFO, "Start capture from %s", data->device_id);
	data->dev = v4l2_open(data->device_id, O_RDWR | O_NONBLOCK);
	if (data->dev == -1) {
		blog(LOG_ERROR, "Unable to open device");
		goto fail;
	}

	/* set input */
	if (v4l2_set_input(data->dev, &data->input) < 0) {
		blog(LOG_ERROR, "Unable to set input %d", data->input);
		goto fail;
	}
	blog(LOG_INFO, "Input: %d", data->input);
	if (v4l2_get_input_caps(data->dev, -1, &input_caps) < 0) {
		blog(LOG_ERROR, "Unable to get input capabilities");
		goto fail;
	}

	/* set video standard if supported */
	if (input_caps & V4L2_IN_CAP_STD) {
		if (v4l2_set_standard(data->dev, &data->standard) < 0) {
			blog(LOG_ERROR, "Unable to set video standard");
			goto fail;
		}
		data->resolution = -1;
		data->framerate  = -1;
	}
	/* set dv timing if supported */
	if (input_caps & V4L2_IN_CAP_DV_TIMINGS) {
		if (v4l2_set_dv_timing(data->dev, &data->dv_timing) < 0) {
			blog(LOG_ERROR, "Unable to set dv timing");
			goto fail;
		}
		data->resolution = -1;
		data->framerate  = -1;
	}

	/* set pixel format and resolution */
	if (v4l2_set_format(data->dev, &data->resolution, &data->pixfmt,
			&data->linesize) < 0) {
		blog(LOG_ERROR, "Unable to set format");
		goto fail;
	}
	if (v4l2_to_obs_video_format(data->pixfmt) == VIDEO_FORMAT_NONE) {
		blog(LOG_ERROR, "Selected video format not supported");
		goto fail;
	}
	v4l2_unpack_tuple(&data->width, &data->height, data->resolution);
	blog(LOG_INFO, "Resolution: %dx%d", data->width, data->height);
	blog(LOG_INFO, "Pixelformat: %s", V4L2_FOURCC_STR(data->pixfmt));
	blog(LOG_INFO, "Linesize: %d Bytes", data->linesize);

	/* set framerate */
	if (v4l2_set_framerate(data->dev, &data->framerate) < 0) {
		blog(LOG_ERROR, "Unable to set framerate");
		goto fail;
	}
	v4l2_unpack_tuple(&fps_num, &fps_denom, data->framerate);
	blog(LOG_INFO, "Framerate: %.2f fps", (float) fps_denom / fps_num);

	/* map buffers */
	if (v4l2_create_mmap(data->dev, &data->buffers) < 0) {
		blog(LOG_ERROR, "Failed to map buffers");
		goto fail;
	}

	/* start the capture thread */
	if (os_event_init(&data->event, OS_EVENT_TYPE_MANUAL) != 0)
		goto fail;
	if (pthread_create(&data->thread, NULL, v4l2_thread, data) != 0)
		goto fail;
	return;
fail:
	blog(LOG_ERROR, "Initialization failed");
	v4l2_terminate(data);
}