mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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b99ecc78ca
GLib guarantees libintl is always present, using proxy-libintl as last resort. There is no need to mock gettex API any more. This fix static build on Windows because G_INTL_STATIC_COMPILATION must be defined before including libintl.h, and glib does it for us as part as including glib.h. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2028>
572 lines
17 KiB
C
572 lines
17 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) <2004> Thomas Vander Stichele <thomas at apestaart dot org>
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* Copyright (C) <2011> Collabora Ltd.
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* Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* SECTION:element-tcpclientsrc
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* @title: tcpclientsrc
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* @see_also: #tcpclientsink
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*
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* ## Example launch line (server):
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* |[
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* nc -l -p 3000
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* ]|
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* ## Example launch line (client):
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* |[
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* gst-launch-1.0 tcpclientsrc port=3000 ! fdsink fd=2
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* ]|
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* everything you type in the server is shown on the client.
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* If you want to detect network failures and/or limit the time your tcp client
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* keeps waiting for data from server setting a timeout value can be useful.
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*
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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 <glib/gi18n-lib.h>
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#include "gsttcpelements.h"
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#include "gsttcpclientsrc.h"
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#include "gsttcpsrcstats.h"
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GST_DEBUG_CATEGORY_STATIC (tcpclientsrc_debug);
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#define GST_CAT_DEFAULT tcpclientsrc_debug
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#define MAX_READ_SIZE 4 * 1024
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#define TCP_DEFAULT_TIMEOUT 0
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static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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enum
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{
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PROP_0,
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PROP_HOST,
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PROP_PORT,
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PROP_TIMEOUT,
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PROP_STATS,
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};
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#define gst_tcp_client_src_parent_class parent_class
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G_DEFINE_TYPE (GstTCPClientSrc, gst_tcp_client_src, GST_TYPE_PUSH_SRC);
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GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (tcpclientsrc, "tcpclientsrc",
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GST_RANK_NONE, GST_TYPE_TCP_CLIENT_SRC, tcp_element_init (plugin));
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static void gst_tcp_client_src_finalize (GObject * gobject);
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static GstCaps *gst_tcp_client_src_getcaps (GstBaseSrc * psrc,
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GstCaps * filter);
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static GstFlowReturn gst_tcp_client_src_create (GstPushSrc * psrc,
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GstBuffer ** outbuf);
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static gboolean gst_tcp_client_src_stop (GstBaseSrc * bsrc);
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static gboolean gst_tcp_client_src_start (GstBaseSrc * bsrc);
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static gboolean gst_tcp_client_src_unlock (GstBaseSrc * bsrc);
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static gboolean gst_tcp_client_src_unlock_stop (GstBaseSrc * bsrc);
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static void gst_tcp_client_src_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_tcp_client_src_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static GstStructure *gst_tcp_client_src_get_stats (GstTCPClientSrc * src);
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static void
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gst_tcp_client_src_class_init (GstTCPClientSrcClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GstBaseSrcClass *gstbasesrc_class;
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GstPushSrcClass *gstpush_src_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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gstbasesrc_class = (GstBaseSrcClass *) klass;
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gstpush_src_class = (GstPushSrcClass *) klass;
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gobject_class->set_property = gst_tcp_client_src_set_property;
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gobject_class->get_property = gst_tcp_client_src_get_property;
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gobject_class->finalize = gst_tcp_client_src_finalize;
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g_object_class_install_property (gobject_class, PROP_HOST,
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g_param_spec_string ("host", "Host",
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"The host IP address to receive packets from", TCP_DEFAULT_HOST,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_PORT,
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g_param_spec_int ("port", "Port", "The port to receive packets from", 0,
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TCP_HIGHEST_PORT, TCP_DEFAULT_PORT,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstTCPClientSrc::timeout;
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*
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* Value in seconds to timeout a blocking I/O (0 = No timeout).
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*
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* Since: 1.12
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*/
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g_object_class_install_property (gobject_class, PROP_TIMEOUT,
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g_param_spec_uint ("timeout", "timeout",
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"Value in seconds to timeout a blocking I/O. 0 = No timeout. ", 0,
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G_MAXUINT, TCP_DEFAULT_TIMEOUT,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstTCPClientSrc::stats:
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*
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* Sends a GstStructure with statistics. We count bytes-received in a
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* platform-independent way and the rest via the tcp_info struct, if it's
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* available. The OS takes care of the TCP layer for us so we can't know it
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* from here.
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*
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* Struct members:
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*
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* bytes-received (uint64): Total bytes received (platform-independent)
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* reordering (uint): Amount of reordering (linux-specific)
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* unacked (uint): Un-acked packets (linux-specific)
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* sacked (uint): Selective acked packets (linux-specific)
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* lost (uint): Lost packets (linux-specific)
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* retrans (uint): Retransmits (linux-specific)
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* fackets (uint): Forward acknowledgement (linux-specific)
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*
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* Since: 1.18
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*/
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g_object_class_install_property (gobject_class, PROP_STATS,
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g_param_spec_boxed ("stats", "Stats", "Retrieve a statistics structure",
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GST_TYPE_STRUCTURE, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
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gst_element_class_add_static_pad_template (gstelement_class, &srctemplate);
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gst_element_class_set_static_metadata (gstelement_class,
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"TCP client source", "Source/Network",
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"Receive data as a client over the network via TCP",
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"Thomas Vander Stichele <thomas at apestaart dot org>");
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gstbasesrc_class->get_caps = gst_tcp_client_src_getcaps;
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gstbasesrc_class->start = gst_tcp_client_src_start;
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gstbasesrc_class->stop = gst_tcp_client_src_stop;
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gstbasesrc_class->unlock = gst_tcp_client_src_unlock;
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gstbasesrc_class->unlock_stop = gst_tcp_client_src_unlock_stop;
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gstpush_src_class->create = gst_tcp_client_src_create;
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GST_DEBUG_CATEGORY_INIT (tcpclientsrc_debug, "tcpclientsrc", 0,
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"TCP Client Source");
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}
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static void
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gst_tcp_client_src_init (GstTCPClientSrc * this)
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{
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this->port = TCP_DEFAULT_PORT;
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this->host = g_strdup (TCP_DEFAULT_HOST);
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this->timeout = TCP_DEFAULT_TIMEOUT;
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this->socket = NULL;
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this->cancellable = g_cancellable_new ();
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GST_OBJECT_FLAG_UNSET (this, GST_TCP_CLIENT_SRC_OPEN);
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}
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static void
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gst_tcp_client_src_finalize (GObject * gobject)
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{
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GstTCPClientSrc *this = GST_TCP_CLIENT_SRC (gobject);
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if (this->cancellable)
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g_object_unref (this->cancellable);
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this->cancellable = NULL;
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if (this->socket)
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g_object_unref (this->socket);
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this->socket = NULL;
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g_free (this->host);
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this->host = NULL;
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gst_clear_structure (&this->stats);
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G_OBJECT_CLASS (parent_class)->finalize (gobject);
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}
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static GstCaps *
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gst_tcp_client_src_getcaps (GstBaseSrc * bsrc, GstCaps * filter)
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{
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GstTCPClientSrc *src;
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GstCaps *caps = NULL;
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src = GST_TCP_CLIENT_SRC (bsrc);
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caps = (filter ? gst_caps_ref (filter) : gst_caps_new_any ());
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GST_DEBUG_OBJECT (src, "returning caps %" GST_PTR_FORMAT, caps);
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g_assert (GST_IS_CAPS (caps));
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return caps;
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}
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static GstFlowReturn
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gst_tcp_client_src_create (GstPushSrc * psrc, GstBuffer ** outbuf)
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{
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GstTCPClientSrc *src;
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GstFlowReturn ret = GST_FLOW_OK;
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gssize rret;
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GError *err = NULL;
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GstMapInfo map;
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gssize avail, read;
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src = GST_TCP_CLIENT_SRC (psrc);
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if (!GST_OBJECT_FLAG_IS_SET (src, GST_TCP_CLIENT_SRC_OPEN))
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goto wrong_state;
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GST_LOG_OBJECT (src, "asked for a buffer");
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/* read the buffer header */
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avail = g_socket_get_available_bytes (src->socket);
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if (avail < 0) {
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goto get_available_error;
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} else if (avail == 0) {
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GIOCondition condition;
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if (!g_socket_condition_wait (src->socket,
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G_IO_IN | G_IO_PRI | G_IO_ERR | G_IO_HUP, src->cancellable, &err))
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goto select_error;
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condition =
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g_socket_condition_check (src->socket,
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G_IO_IN | G_IO_PRI | G_IO_ERR | G_IO_HUP);
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if ((condition & G_IO_ERR)) {
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GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
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("Socket in error state"));
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*outbuf = NULL;
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ret = GST_FLOW_ERROR;
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goto done;
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} else if ((condition & G_IO_HUP)) {
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GST_DEBUG_OBJECT (src, "Connection closed");
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*outbuf = NULL;
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ret = GST_FLOW_EOS;
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goto done;
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}
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avail = g_socket_get_available_bytes (src->socket);
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if (avail < 0)
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goto get_available_error;
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}
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if (avail > 0) {
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read = MIN (avail, MAX_READ_SIZE);
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*outbuf = gst_buffer_new_and_alloc (read);
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gst_buffer_map (*outbuf, &map, GST_MAP_READWRITE);
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rret =
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g_socket_receive (src->socket, (gchar *) map.data, read,
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src->cancellable, &err);
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} else {
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/* Connection closed */
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*outbuf = NULL;
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read = 0;
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rret = 0;
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}
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if (rret == 0) {
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GST_DEBUG_OBJECT (src, "Connection closed");
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ret = GST_FLOW_EOS;
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if (*outbuf) {
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gst_buffer_unmap (*outbuf, &map);
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gst_buffer_unref (*outbuf);
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}
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*outbuf = NULL;
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} else if (rret < 0) {
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if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
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ret = GST_FLOW_FLUSHING;
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GST_DEBUG_OBJECT (src, "Cancelled reading from socket");
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} else {
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ret = GST_FLOW_ERROR;
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GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
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("Failed to read from socket: %s", err->message));
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}
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gst_buffer_unmap (*outbuf, &map);
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gst_buffer_unref (*outbuf);
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*outbuf = NULL;
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} else {
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ret = GST_FLOW_OK;
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gst_buffer_unmap (*outbuf, &map);
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gst_buffer_resize (*outbuf, 0, rret);
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src->bytes_received += read;
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GST_LOG_OBJECT (src,
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"Returning buffer from _get of size %" G_GSIZE_FORMAT ", ts %"
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GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT
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", offset %" G_GINT64_FORMAT ", offset_end %" G_GINT64_FORMAT,
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gst_buffer_get_size (*outbuf),
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GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (*outbuf)),
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GST_TIME_ARGS (GST_BUFFER_DURATION (*outbuf)),
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GST_BUFFER_OFFSET (*outbuf), GST_BUFFER_OFFSET_END (*outbuf));
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}
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g_clear_error (&err);
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done:
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return ret;
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select_error:
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{
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if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
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GST_DEBUG_OBJECT (src, "Cancelled");
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ret = GST_FLOW_FLUSHING;
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} else {
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GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
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("Select failed: %s", err->message));
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ret = GST_FLOW_ERROR;
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}
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g_clear_error (&err);
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return ret;
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}
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get_available_error:
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{
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GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
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("Failed to get available bytes from socket"));
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return GST_FLOW_ERROR;
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}
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wrong_state:
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{
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GST_DEBUG_OBJECT (src, "connection to closed, cannot read data");
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return GST_FLOW_FLUSHING;
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}
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}
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static void
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gst_tcp_client_src_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstTCPClientSrc *tcpclientsrc = GST_TCP_CLIENT_SRC (object);
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switch (prop_id) {
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case PROP_HOST:
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if (!g_value_get_string (value)) {
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g_warning ("host property cannot be NULL");
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break;
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}
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g_free (tcpclientsrc->host);
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tcpclientsrc->host = g_value_dup_string (value);
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break;
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case PROP_PORT:
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tcpclientsrc->port = g_value_get_int (value);
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break;
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case PROP_TIMEOUT:
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tcpclientsrc->timeout = g_value_get_uint (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_tcp_client_src_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstTCPClientSrc *tcpclientsrc = GST_TCP_CLIENT_SRC (object);
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switch (prop_id) {
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case PROP_HOST:
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g_value_set_string (value, tcpclientsrc->host);
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break;
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case PROP_PORT:
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g_value_set_int (value, tcpclientsrc->port);
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break;
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case PROP_TIMEOUT:
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g_value_set_uint (value, tcpclientsrc->timeout);
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break;
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case PROP_STATS:
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g_value_take_boxed (value, gst_tcp_client_src_get_stats (tcpclientsrc));
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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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/* create a socket for connecting to remote server */
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static gboolean
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gst_tcp_client_src_start (GstBaseSrc * bsrc)
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{
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GstTCPClientSrc *src = GST_TCP_CLIENT_SRC (bsrc);
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GError *err = NULL;
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GList *addrs;
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GList *cur_addr;
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GSocketAddress *saddr;
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src->bytes_received = 0;
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gst_clear_structure (&src->stats);
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addrs =
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tcp_get_addresses (GST_ELEMENT (src), src->host, src->cancellable, &err);
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if (!addrs)
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goto name_resolve;
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/* create receiving client socket */
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GST_DEBUG_OBJECT (src, "opening receiving client socket to %s:%d",
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src->host, src->port);
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cur_addr = addrs;
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while (cur_addr) {
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/* clean up from possible previous iterations */
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g_clear_error (&err);
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g_clear_object (&src->socket);
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/* iterate over addresses until one works */
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src->socket =
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tcp_create_socket (GST_ELEMENT (src), &cur_addr, src->port, &saddr,
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&err);
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if (!src->socket)
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goto no_socket;
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g_socket_set_timeout (src->socket, src->timeout);
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GST_DEBUG_OBJECT (src, "opened receiving client socket");
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/* connect to server */
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if (g_socket_connect (src->socket, saddr, src->cancellable, &err))
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break;
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/* failed to connect, release and try next address... */
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g_clear_object (&saddr);
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if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED))
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goto connect_failed;
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}
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/* final connect attempt failed */
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if (err)
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goto connect_failed;
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GST_DEBUG_OBJECT (src, "connected to %s:%d", src->host, src->port);
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g_list_free_full (g_steal_pointer (&addrs), g_object_unref);
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g_clear_object (&saddr);
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GST_OBJECT_FLAG_SET (src, GST_TCP_CLIENT_SRC_OPEN);
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return TRUE;
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name_resolve:
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{
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if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
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GST_DEBUG_OBJECT (src, "Cancelled name resolution");
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} else {
|
|
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
|
|
("Failed to resolve host '%s': %s", src->host, err->message));
|
|
}
|
|
g_clear_error (&err);
|
|
return FALSE;
|
|
}
|
|
no_socket:
|
|
{
|
|
g_list_free_full (g_steal_pointer (&addrs), g_object_unref);
|
|
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
|
|
("Failed to create socket: %s", err->message));
|
|
g_clear_error (&err);
|
|
return FALSE;
|
|
}
|
|
connect_failed:
|
|
{
|
|
g_list_free_full (g_steal_pointer (&addrs), g_object_unref);
|
|
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
|
|
GST_DEBUG_OBJECT (src, "Cancelled connecting");
|
|
} else {
|
|
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
|
|
("Failed to connect to host '%s:%d': %s", src->host, src->port,
|
|
err->message));
|
|
}
|
|
g_clear_error (&err);
|
|
/* pretend we opened ok for proper cleanup to happen */
|
|
GST_OBJECT_FLAG_SET (src, GST_TCP_CLIENT_SRC_OPEN);
|
|
gst_tcp_client_src_stop (GST_BASE_SRC (src));
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/* close the socket and associated resources
|
|
* unset OPEN flag
|
|
* used both to recover from errors and go to NULL state */
|
|
static gboolean
|
|
gst_tcp_client_src_stop (GstBaseSrc * bsrc)
|
|
{
|
|
GstTCPClientSrc *src;
|
|
GError *err = NULL;
|
|
|
|
src = GST_TCP_CLIENT_SRC (bsrc);
|
|
|
|
if (src->socket) {
|
|
GST_DEBUG_OBJECT (src, "closing socket");
|
|
|
|
src->stats = gst_tcp_client_src_get_stats (src);
|
|
|
|
if (!g_socket_close (src->socket, &err)) {
|
|
GST_ERROR_OBJECT (src, "Failed to close socket: %s", err->message);
|
|
g_clear_error (&err);
|
|
}
|
|
g_object_unref (src->socket);
|
|
src->socket = NULL;
|
|
}
|
|
|
|
GST_OBJECT_FLAG_UNSET (src, GST_TCP_CLIENT_SRC_OPEN);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* will be called only between calls to start() and stop() */
|
|
static gboolean
|
|
gst_tcp_client_src_unlock (GstBaseSrc * bsrc)
|
|
{
|
|
GstTCPClientSrc *src = GST_TCP_CLIENT_SRC (bsrc);
|
|
|
|
GST_DEBUG_OBJECT (src, "set to flushing");
|
|
g_cancellable_cancel (src->cancellable);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* will be called only between calls to start() and stop() */
|
|
static gboolean
|
|
gst_tcp_client_src_unlock_stop (GstBaseSrc * bsrc)
|
|
{
|
|
GstTCPClientSrc *src = GST_TCP_CLIENT_SRC (bsrc);
|
|
|
|
GST_DEBUG_OBJECT (src, "unset flushing");
|
|
g_object_unref (src->cancellable);
|
|
src->cancellable = g_cancellable_new ();
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static GstStructure *
|
|
gst_tcp_client_src_get_stats (GstTCPClientSrc * src)
|
|
{
|
|
GstStructure *s;
|
|
|
|
/* we can't get the values post stop so just return the saved ones */
|
|
if (src->stats)
|
|
return gst_structure_copy (src->stats);
|
|
|
|
s = gst_structure_new ("GstTCPClientSrcStats",
|
|
"bytes-received", G_TYPE_UINT64, src->bytes_received, NULL);
|
|
|
|
gst_tcp_stats_from_socket (s, src->socket);
|
|
|
|
return s;
|
|
}
|