mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-27 02:30:35 +00:00
dd3b41efe1
Original commit message from CVS: * libs/gst/net/gstnetclientclock.c: (gst_net_client_clock_thread): * libs/gst/net/gstnettimeprovider.c: (gst_net_time_provider_thread): Stop reading commands when EOF as well. * plugins/elements/gstfakesink.c: (gst_fake_sink_class_init): * plugins/elements/gstfakesrc.c: (gst_fake_src_class_init): * plugins/elements/gstidentity.c: (gst_identity_class_init): Unify description of the dump property.
556 lines
14 KiB
C
556 lines
14 KiB
C
/* GStreamer
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* Copyright (C) 2005 Andy Wingo <wingo@pobox.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:gstnettimeprovider
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* @short_description: Special object that exposed the time of a clock
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* on the network.
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* @see_also: #GstClock, #GstNetClientClock, #GstPipeline
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*
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* This object exposes the time of a #GstClock on the network.
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*
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* A #GstNetTimeProvider is created with gst_net_time_provider_new() which
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* takes a #GstClock, an address and a port number as arguments.
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*
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* After creating the object, a client clock such as #GstNetClientClock can
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* query the exposed clock over the network for its values.
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*
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* The #GstNetTimeProvider typically wraps the clock used by a #GstPipeline.
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*
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* Last reviewed on 2005-11-23 (0.9.5)
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstnettimeprovider.h"
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#include "gstnettimepacket.h"
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#include <glib.h>
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#include <unistd.h>
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#ifndef G_OS_WIN32
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#include <sys/ioctl.h>
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#endif
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#ifdef HAVE_FIONREAD_IN_SYS_FILIO
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#include <sys/filio.h>
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#endif
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GST_DEBUG_CATEGORY_STATIC (ntp_debug);
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#define GST_CAT_DEFAULT (ntp_debug)
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/* the select call is also performed on the control sockets, that way
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* we can send special commands to unblock or restart the select call */
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#define CONTROL_RESTART 'R' /* restart the select call */
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#define CONTROL_STOP 'S' /* stop the select call */
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#define CONTROL_SOCKETS(self) self->control_sock
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#define WRITE_SOCKET(self) self->control_sock[1]
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#define READ_SOCKET(self) self->control_sock[0]
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#ifdef G_OS_WIN32
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#define close(sock) closesocket(sock)
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#endif
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#define SEND_COMMAND(self, command) \
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G_STMT_START { \
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unsigned char c; c = command; \
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write (WRITE_SOCKET(self), &c, 1); \
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} G_STMT_END
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#define READ_COMMAND(self, command, res) \
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G_STMT_START { \
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res = read(READ_SOCKET(self), &command, 1); \
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} G_STMT_END
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#define DEFAULT_ADDRESS "0.0.0.0"
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#define DEFAULT_PORT 5637
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#define IS_ACTIVE(self) (g_atomic_int_get (&((self)->active.active)))
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#ifdef G_OS_WIN32
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#define setsockopt(sock, sol_flags, reuse_flags, ru, sizeofru) setsockopt (sock, sol_flags, reuse_flags, (char *)ru, sizeofru)
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#endif
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enum
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{
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PROP_0,
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PROP_PORT,
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PROP_ADDRESS,
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PROP_CLOCK,
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PROP_ACTIVE
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/* FILL ME */
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};
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static gboolean gst_net_time_provider_start (GstNetTimeProvider * bself);
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static void gst_net_time_provider_stop (GstNetTimeProvider * bself);
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static gpointer gst_net_time_provider_thread (gpointer data);
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static void gst_net_time_provider_finalize (GObject * object);
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static void gst_net_time_provider_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_net_time_provider_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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#define _do_init(type) \
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GST_DEBUG_CATEGORY_INIT (ntp_debug, "nettime", 0, "Network time provider");
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GST_BOILERPLATE_FULL (GstNetTimeProvider, gst_net_time_provider, GstObject,
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GST_TYPE_OBJECT, _do_init);
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#ifdef G_OS_WIN32
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static int
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inet_aton (const char *c, struct in_addr *paddr)
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{
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paddr->s_addr = inet_addr (c);
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if (paddr->s_addr == INADDR_NONE)
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return 0;
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return 1;
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}
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#endif
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static void
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gst_net_time_provider_base_init (gpointer g_class)
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{
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g_assert (sizeof (GstClockTime) == 8);
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}
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static void
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gst_net_time_provider_class_init (GstNetTimeProviderClass * klass)
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{
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GObjectClass *gobject_class;
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gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->finalize = gst_net_time_provider_finalize;
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gobject_class->set_property = gst_net_time_provider_set_property;
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gobject_class->get_property = gst_net_time_provider_get_property;
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g_object_class_install_property (gobject_class, PROP_PORT,
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g_param_spec_int ("port", "port",
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"The port to receive the packets from, 0=allocate", 0, G_MAXUINT16,
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DEFAULT_PORT, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_ADDRESS,
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g_param_spec_string ("address", "address",
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"The address to bind on, as a dotted quad (x.x.x.x)",
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DEFAULT_ADDRESS, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_CLOCK,
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g_param_spec_object ("clock", "Clock",
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"The clock to export over the network", GST_TYPE_CLOCK,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_ACTIVE,
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g_param_spec_boolean ("active", "Active",
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"TRUE if the clock will respond to queries over the network", TRUE,
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G_PARAM_READWRITE));
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}
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static void
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gst_net_time_provider_init (GstNetTimeProvider * self,
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GstNetTimeProviderClass * g_class)
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{
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#ifdef G_OS_WIN32
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WSADATA w;
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int error = WSAStartup (0x0202, &w);
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if (error) {
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GST_DEBUG_OBJECT (self, "Error on WSAStartup");
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}
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if (w.wVersion != 0x0202) {
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WSACleanup ();
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}
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#endif
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self->port = DEFAULT_PORT;
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self->sock = -1;
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self->address = g_strdup (DEFAULT_ADDRESS);
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self->thread = NULL;
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self->active.active = TRUE;
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READ_SOCKET (self) = -1;
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WRITE_SOCKET (self) = -1;
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}
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static void
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gst_net_time_provider_finalize (GObject * object)
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{
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GstNetTimeProvider *self = GST_NET_TIME_PROVIDER (object);
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if (self->thread) {
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gst_net_time_provider_stop (self);
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g_assert (self->thread == NULL);
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}
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if (READ_SOCKET (self) != -1) {
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close (READ_SOCKET (self));
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close (WRITE_SOCKET (self));
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READ_SOCKET (self) = -1;
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WRITE_SOCKET (self) = -1;
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}
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g_free (self->address);
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self->address = NULL;
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if (self->clock)
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gst_object_unref (self->clock);
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self->clock = NULL;
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#ifdef G_OS_WIN32
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WSACleanup ();
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#endif
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static gpointer
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gst_net_time_provider_thread (gpointer data)
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{
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GstNetTimeProvider *self = data;
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struct sockaddr_in tmpaddr;
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socklen_t len;
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fd_set read_fds;
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guint max_sock;
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GstNetTimePacket *packet;
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gint ret;
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while (TRUE) {
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FD_ZERO (&read_fds);
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FD_SET (self->sock, &read_fds);
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FD_SET (READ_SOCKET (self), &read_fds);
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max_sock = MAX (self->sock, READ_SOCKET (self));
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GST_LOG_OBJECT (self, "doing select");
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#ifdef G_OS_WIN32
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if (((max_sock + 1) != READ_SOCKET (self)) ||
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((max_sock + 1) != WRITE_SOCKET (self))) {
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ret = select (max_sock + 1, &read_fds, NULL, NULL, NULL);
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} else {
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ret = 1;
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}
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#else
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ret = select (max_sock + 1, &read_fds, NULL, NULL, NULL);
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#endif
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GST_LOG_OBJECT (self, "select returned %d", ret);
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if (ret <= 0) {
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if (errno != EAGAIN && errno != EINTR)
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goto select_error;
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else
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continue;
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} else if (FD_ISSET (READ_SOCKET (self), &read_fds)) {
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/* got control message */
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while (TRUE) {
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gchar command;
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int res;
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READ_COMMAND (self, command, res);
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if (res <= 0) {
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GST_LOG_OBJECT (self, "no more commands");
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break;
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}
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switch (command) {
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case CONTROL_STOP:
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/* break out of the select loop */
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GST_LOG_OBJECT (self, "stop");
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goto stopped;
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default:
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GST_WARNING_OBJECT (self, "unkown");
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g_warning ("nettimeprovider: unknown control message received");
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continue;
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}
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g_assert_not_reached ();
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}
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continue;
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} else {
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/* got data in */
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len = sizeof (struct sockaddr);
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packet = gst_net_time_packet_receive (self->sock,
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(struct sockaddr *) &tmpaddr, &len);
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if (!packet)
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goto receive_error;
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if (IS_ACTIVE (self)) {
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/* do what we were asked to and send the packet back */
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packet->remote_time = gst_clock_get_time (self->clock);
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/* ignore errors */
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gst_net_time_packet_send (packet, self->sock,
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(struct sockaddr *) &tmpaddr, len);
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}
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g_free (packet);
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continue;
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}
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g_assert_not_reached ();
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/* log errors and keep going */
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select_error:
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{
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GST_DEBUG_OBJECT (self, "select error %d: %s (%d)", ret,
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g_strerror (errno), errno);
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continue;
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}
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stopped:
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{
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GST_DEBUG_OBJECT (self, "shutting down");
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/* close socket */
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return NULL;
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}
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receive_error:
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{
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GST_DEBUG_OBJECT (self, "receive error");
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continue;
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}
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g_assert_not_reached ();
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}
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g_assert_not_reached ();
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return NULL;
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}
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static void
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gst_net_time_provider_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstNetTimeProvider *self = GST_NET_TIME_PROVIDER (object);
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GstClock **clock_p = &self->clock;
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switch (prop_id) {
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case PROP_PORT:
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self->port = g_value_get_int (value);
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break;
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case PROP_ADDRESS:
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g_free (self->address);
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if (g_value_get_string (value) == NULL)
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self->address = g_strdup (DEFAULT_ADDRESS);
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else
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self->address = g_strdup (g_value_get_string (value));
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break;
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case PROP_CLOCK:
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gst_object_replace ((GstObject **) clock_p,
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(GstObject *) g_value_get_object (value));
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break;
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case PROP_ACTIVE:
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gst_atomic_int_set (&self->active.active, g_value_get_boolean (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_net_time_provider_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstNetTimeProvider *self = GST_NET_TIME_PROVIDER (object);
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switch (prop_id) {
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case PROP_PORT:
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g_value_set_int (value, self->port);
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break;
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case PROP_ADDRESS:
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g_value_set_string (value, self->address);
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break;
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case PROP_CLOCK:
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g_value_set_object (value, self->clock);
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break;
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case PROP_ACTIVE:
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g_value_set_boolean (value, IS_ACTIVE (self));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static gboolean
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gst_net_time_provider_start (GstNetTimeProvider * self)
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{
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gint ru;
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struct sockaddr_in my_addr;
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guint len;
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int port;
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gint ret;
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GError *error;
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if ((ret = socket (AF_INET, SOCK_DGRAM, 0)) < 0)
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goto no_socket;
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self->sock = ret;
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ru = 1;
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ret = setsockopt (self->sock, SOL_SOCKET, SO_REUSEADDR, &ru, sizeof (ru));
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if (ret < 0)
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goto setsockopt_error;
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memset (&my_addr, 0, sizeof (my_addr));
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my_addr.sin_family = AF_INET; /* host byte order */
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my_addr.sin_port = htons ((gint16) self->port); /* short, network byte order */
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my_addr.sin_addr.s_addr = INADDR_ANY;
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if (self->address)
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inet_aton (self->address, &my_addr.sin_addr);
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GST_DEBUG_OBJECT (self, "binding on port %d", self->port);
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ret = bind (self->sock, (struct sockaddr *) &my_addr, sizeof (my_addr));
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if (ret < 0)
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goto bind_error;
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len = sizeof (my_addr);
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ret = getsockname (self->sock, (struct sockaddr *) &my_addr, &len);
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if (ret < 0)
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goto getsockname_error;
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port = ntohs (my_addr.sin_port);
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GST_DEBUG_OBJECT (self, "bound, on port %d", port);
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if (port != self->port) {
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self->port = port;
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GST_DEBUG_OBJECT (self, "notifying %d", port);
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g_object_notify (G_OBJECT (self), "port");
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}
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self->thread = g_thread_create (gst_net_time_provider_thread, self, TRUE,
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&error);
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if (!self->thread)
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goto no_thread;
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return TRUE;
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/* ERRORS */
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no_socket:
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{
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GST_ERROR_OBJECT (self, "socket failed %d: %s (%d)", ret,
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g_strerror (errno), errno);
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return FALSE;
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}
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setsockopt_error:
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{
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close (self->sock);
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self->sock = -1;
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GST_ERROR_OBJECT (self, "setsockopt failed %d: %s (%d)", ret,
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g_strerror (errno), errno);
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return FALSE;
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}
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bind_error:
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{
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close (self->sock);
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self->sock = -1;
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GST_ERROR_OBJECT (self, "bind failed %d: %s (%d)", ret,
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g_strerror (errno), errno);
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return FALSE;
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}
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getsockname_error:
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{
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close (self->sock);
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self->sock = -1;
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GST_ERROR_OBJECT (self, "getsockname failed %d: %s (%d)", ret,
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g_strerror (errno), errno);
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return FALSE;
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}
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no_thread:
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{
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close (self->sock);
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self->sock = -1;
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GST_ERROR_OBJECT (self, "could not create thread: %s", error->message);
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g_error_free (error);
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return FALSE;
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}
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}
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static void
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gst_net_time_provider_stop (GstNetTimeProvider * self)
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{
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SEND_COMMAND (self, CONTROL_STOP);
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g_thread_join (self->thread);
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self->thread = NULL;
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if (self->sock != -1) {
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close (self->sock);
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self->sock = -1;
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}
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}
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/**
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* gst_net_time_provider_new:
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* @clock: a #GstClock to export over the network
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* @address: an address to bind on as a dotted quad (xxx.xxx.xxx.xxx), or NULL
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* to bind to all addresses
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* @port: a port to bind on, or 0 to let the kernel choose
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*
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* Allows network clients to get the current time of @clock.
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*
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* Returns: the new #GstNetTimeProvider, or NULL on error
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*/
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GstNetTimeProvider *
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gst_net_time_provider_new (GstClock * clock, const gchar * address, gint port)
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{
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|
GstNetTimeProvider *ret;
|
|
gint iret;
|
|
|
|
g_return_val_if_fail (clock && GST_IS_CLOCK (clock), NULL);
|
|
g_return_val_if_fail (port >= 0 && port <= G_MAXUINT16, NULL);
|
|
|
|
ret = g_object_new (GST_TYPE_NET_TIME_PROVIDER, "clock", clock, "address",
|
|
address, "port", port, NULL);
|
|
|
|
#ifdef G_OS_WIN32
|
|
GST_DEBUG_OBJECT (ret, "creating pipe");
|
|
if ((iret = pipe (CONTROL_SOCKETS (ret))) < 0)
|
|
goto no_socket_pair;
|
|
#else
|
|
GST_DEBUG_OBJECT (ret, "creating socket pair");
|
|
if ((iret = socketpair (PF_UNIX, SOCK_STREAM, 0, CONTROL_SOCKETS (ret))) < 0)
|
|
goto no_socket_pair;
|
|
|
|
fcntl (READ_SOCKET (ret), F_SETFL, O_NONBLOCK);
|
|
fcntl (WRITE_SOCKET (ret), F_SETFL, O_NONBLOCK);
|
|
#endif
|
|
|
|
if (!gst_net_time_provider_start (ret))
|
|
goto failed_start;
|
|
|
|
/* all systems go, cap'n */
|
|
return ret;
|
|
|
|
no_socket_pair:
|
|
{
|
|
GST_ERROR_OBJECT (ret, "no socket pair %d: %s (%d)", iret,
|
|
g_strerror (errno), errno);
|
|
gst_object_unref (ret);
|
|
return NULL;
|
|
}
|
|
failed_start:
|
|
{
|
|
/* already printed a nice error */
|
|
gst_object_unref (ret);
|
|
return NULL;
|
|
}
|
|
|
|
}
|