C++ (Cpp) print_current_values Examples

Example #1

File: playback-tutorial-5.c Project: 0x8BADFOOD/GstreamerCodeSnippets

/* Process keyboard input */
static gboolean handle_keyboard (GIOChannel *source, GIOCondition cond, CustomData *data) {
  gchar *str = NULL;
  
  if (g_io_channel_read_line (source, &str, NULL, NULL, NULL) != G_IO_STATUS_NORMAL) {
    return TRUE;
  }
  
  switch (g_ascii_tolower (str[0])) {
  case 'c':
    update_color_channel ("CONTRAST", g_ascii_isupper (str[0]), GST_COLOR_BALANCE (data->pipeline));
    break;
  case 'b':
    update_color_channel ("BRIGHTNESS", g_ascii_isupper (str[0]), GST_COLOR_BALANCE (data->pipeline));
    break;
  case 'h':
    update_color_channel ("HUE", g_ascii_isupper (str[0]), GST_COLOR_BALANCE (data->pipeline));
    break;
  case 's':
    update_color_channel ("SATURATION", g_ascii_isupper (str[0]), GST_COLOR_BALANCE (data->pipeline));
    break;
  case 'q':
    g_main_loop_quit (data->loop);
    break;
  default:
    break;
  }
  
  g_free (str);
  
  print_current_values (data->pipeline);
  
  return TRUE;
}

Example #2

File: mouse-dpi-tool.c Project: chengyake/karch

static int
handle_event(struct measurements *m, const struct input_event *ev)
{
	if (ev->type == EV_SYN) {
		const int idle_reset = 3000000; /* us */
		uint64_t last_us = m->us;

		m->us = tv2us(&ev->time);

		/* reset after pause */
		if (last_us + idle_reset < m->us) {
			m->max_frequency = 0.0;
			m->distance = 0;
		} else {
			double freq = get_frequency(last_us, m->us);
			push_frequency(m, freq);
			m->max_frequency = max(freq, m->max_frequency);
			return print_current_values(m);
		}

		return 0;
	} else if (ev->type != EV_REL)
		return 0;

	switch(ev->code) {
		case REL_X:
			m->distance += ev->value;
			break;
	}

	return 0;
}

Example #3

File: playback-tutorial-5.c Project: 0x8BADFOOD/GstreamerCodeSnippets

int main(int argc, char *argv[]) {
  CustomData data;
  GstStateChangeReturn ret;
  GIOChannel *io_stdin;
   
  /* Initialize GStreamer */
  gst_init (&argc, &argv);
  
  /* Initialize our data structure */
  memset (&data, 0, sizeof (data));
  
  /* Print usage map */
  g_print (
    "USAGE: Choose one of the following options, then press enter:\n"
    " 'C' to increase contrast, 'c' to decrease contrast\n"
    " 'B' to increase brightness, 'b' to decrease brightness\n"
    " 'H' to increase hue, 'h' to decrease hue\n"
    " 'S' to increase saturation, 's' to decrease saturation\n"
    " 'Q' to quit\n");
  
  /* Build the pipeline */
  data.pipeline = gst_parse_launch ("playbin2 uri=http://docs.gstreamer.com/media/sintel_trailer-480p.webm", NULL);
  
  /* Add a keyboard watch so we get notified of keystrokes */
#ifdef _WIN32
  io_stdin = g_io_channel_win32_new_fd (fileno (stdin));
#else
  io_stdin = g_io_channel_unix_new (fileno (stdin));
#endif
  g_io_add_watch (io_stdin, G_IO_IN, (GIOFunc)handle_keyboard, &data);
  
  /* Start playing */
  ret = gst_element_set_state (data.pipeline, GST_STATE_PLAYING);
  if (ret == GST_STATE_CHANGE_FAILURE) {
    g_printerr ("Unable to set the pipeline to the playing state.\n");
    gst_object_unref (data.pipeline);
    return -1;
  }
  print_current_values (data.pipeline);
   
  /* Create a GLib Main Loop and set it to run */
  data.loop = g_main_loop_new (NULL, FALSE);
  g_main_loop_run (data.loop);
  
  /* Free resources */
  g_main_loop_unref (data.loop);
  g_io_channel_unref (io_stdin);
  gst_element_set_state (data.pipeline, GST_STATE_NULL);
  gst_object_unref (data.pipeline);
  return 0;
}