| /* GStreamer |
| * Copyright (C) 2015 Sebastian Dröge <sebastian@centricular.com> |
| * |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public |
| * License along with this library; if not, write to the |
| * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| /* Create a PTP client clock and print times and statistics. |
| * |
| * When running this from a GStreamer build tree, you will have to set |
| * GST_PTP_HELPER to libs/gst/helpers/.libs/gst-ptp-helper and also |
| * make sure that it has the right permissions (setuid root or appropriate |
| * capabilities |
| * |
| * You can test this with any PTP compatible clock, e.g. ptpd from here: http://ptpd.sourceforge.net/ |
| * |
| * For testing the accuracy, you can use the PTP reflector available from |
| * http://code.centricular.com/ptp-clock-reflector/ or here |
| * https://github.com/sdroege/ptp-clock-reflector |
| */ |
| |
| #include <gst/gst.h> |
| #include <gst/net/net.h> |
| |
| static gint domain = 0; |
| static gboolean stats = FALSE; |
| |
| static GOptionEntry opt_entries[] = { |
| {"domain", 'd', 0, G_OPTION_ARG_INT, &domain, |
| "PTP domain", NULL}, |
| {"stats", 's', 0, G_OPTION_ARG_NONE, &stats, |
| "Print PTP statistics", NULL}, |
| {NULL} |
| }; |
| |
| static gboolean |
| stats_cb (guint8 d, const GstStructure * stats, gpointer user_data) |
| { |
| if (d == domain) { |
| gchar *stats_str = gst_structure_to_string (stats); |
| g_print ("Got stats: %s\n", stats_str); |
| g_free (stats_str); |
| } |
| |
| return TRUE; |
| } |
| |
| gint |
| main (gint argc, gchar ** argv) |
| { |
| GOptionContext *opt_ctx; |
| GstClock *clock; |
| GError *err = NULL; |
| |
| opt_ctx = g_option_context_new ("- GStreamer PTP clock test app"); |
| g_option_context_add_main_entries (opt_ctx, opt_entries, NULL); |
| g_option_context_add_group (opt_ctx, gst_init_get_option_group ()); |
| if (!g_option_context_parse (opt_ctx, &argc, &argv, &err)) |
| g_error ("Error parsing options: %s", err->message); |
| g_option_context_free (opt_ctx); |
| |
| if (!gst_ptp_init (GST_PTP_CLOCK_ID_NONE, NULL)) |
| g_error ("failed to init ptp"); |
| |
| if (stats) |
| gst_ptp_statistics_callback_add (stats_cb, NULL, NULL); |
| |
| clock = gst_ptp_clock_new ("test-clock", domain); |
| |
| gst_clock_wait_for_sync (GST_CLOCK (clock), GST_CLOCK_TIME_NONE); |
| |
| while (TRUE) { |
| GstClockTime local, remote; |
| GstClockTimeDiff diff; |
| |
| local = g_get_real_time () * 1000; |
| remote = gst_clock_get_time (clock); |
| diff = GST_CLOCK_DIFF (local, remote); |
| |
| g_print ("local: %" GST_TIME_FORMAT " ptp: %" GST_TIME_FORMAT " diff: %s%" |
| GST_TIME_FORMAT "\n", GST_TIME_ARGS (local), GST_TIME_ARGS (remote), |
| (diff < 0 ? "-" : " "), GST_TIME_ARGS (ABS (diff))); |
| g_usleep (100000); |
| } |
| |
| return 0; |
| } |