--- /dev/null
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ * Copyright (C) <2004> Thomas Vander Stichele <thomas at apestaart dot org>
+ *
+ * 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/**
+ * SECTION:element-tcpclientsrc
+ * @see_also: #tcpclientsink
+ *
+ * <refsect2>
+ * <title>Example launch line</title>
+ * |[
+ * # server:
+ * nc -l -p 3000
+ * # client:
+ * gst-launch tcpclientsrc protocol=none port=3000 ! fdsink fd=2
+ * ]| everything you type in the server is shown on the client
+ * </refsect2>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst-i18n-plugin.h>
+#include "gsttcp.h"
+#include "gsttcpclientsrc.h"
+#include <string.h> /* memset */
+#include <unistd.h>
+#include <arpa/inet.h>
+#include <fcntl.h>
+
+
+GST_DEBUG_CATEGORY_STATIC (tcpclientsrc_debug);
+#define GST_CAT_DEFAULT tcpclientsrc_debug
+
+#define MAX_READ_SIZE 4 * 1024
+
+
+static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS_ANY);
+
+
+enum
+{
+ PROP_0,
+ PROP_HOST,
+ PROP_PORT,
+ PROP_PROTOCOL
+};
+
+
+GST_BOILERPLATE (GstTCPClientSrc, gst_tcp_client_src, GstPushSrc,
+ GST_TYPE_PUSH_SRC);
+
+
+static void gst_tcp_client_src_finalize (GObject * gobject);
+
+static GstCaps *gst_tcp_client_src_getcaps (GstBaseSrc * psrc);
+
+static GstFlowReturn gst_tcp_client_src_create (GstPushSrc * psrc,
+ GstBuffer ** outbuf);
+static gboolean gst_tcp_client_src_stop (GstBaseSrc * bsrc);
+static gboolean gst_tcp_client_src_start (GstBaseSrc * bsrc);
+static gboolean gst_tcp_client_src_unlock (GstBaseSrc * bsrc);
+static gboolean gst_tcp_client_src_unlock_stop (GstBaseSrc * bsrc);
+
+static void gst_tcp_client_src_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_tcp_client_src_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+
+static void
+gst_tcp_client_src_base_init (gpointer g_class)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&srctemplate));
+
+ gst_element_class_set_details_simple (element_class,
+ "TCP client source", "Source/Network",
+ "Receive data as a client over the network via TCP",
+ "Thomas Vander Stichele <thomas at apestaart dot org>");
+}
+
+static void
+gst_tcp_client_src_class_init (GstTCPClientSrcClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstBaseSrcClass *gstbasesrc_class;
+ GstPushSrcClass *gstpush_src_class;
+
+ gobject_class = (GObjectClass *) klass;
+ gstbasesrc_class = (GstBaseSrcClass *) klass;
+ gstpush_src_class = (GstPushSrcClass *) klass;
+
+ gobject_class->set_property = gst_tcp_client_src_set_property;
+ gobject_class->get_property = gst_tcp_client_src_get_property;
+ gobject_class->finalize = gst_tcp_client_src_finalize;
+
+ g_object_class_install_property (gobject_class, PROP_HOST,
+ g_param_spec_string ("host", "Host",
+ "The host IP address to receive packets from", TCP_DEFAULT_HOST,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+ g_object_class_install_property (gobject_class, PROP_PORT,
+ g_param_spec_int ("port", "Port", "The port to receive packets from", 0,
+ TCP_HIGHEST_PORT, TCP_DEFAULT_PORT,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+ g_object_class_install_property (gobject_class, PROP_PROTOCOL,
+ g_param_spec_enum ("protocol", "Protocol", "The protocol to wrap data in",
+ GST_TYPE_TCP_PROTOCOL, GST_TCP_PROTOCOL_NONE,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ gstbasesrc_class->get_caps = gst_tcp_client_src_getcaps;
+ gstbasesrc_class->start = gst_tcp_client_src_start;
+ gstbasesrc_class->stop = gst_tcp_client_src_stop;
+ gstbasesrc_class->unlock = gst_tcp_client_src_unlock;
+ gstbasesrc_class->unlock_stop = gst_tcp_client_src_unlock_stop;
+
+ gstpush_src_class->create = gst_tcp_client_src_create;
+
+ GST_DEBUG_CATEGORY_INIT (tcpclientsrc_debug, "tcpclientsrc", 0,
+ "TCP Client Source");
+}
+
+static void
+gst_tcp_client_src_init (GstTCPClientSrc * this, GstTCPClientSrcClass * g_class)
+{
+ this->port = TCP_DEFAULT_PORT;
+ this->host = g_strdup (TCP_DEFAULT_HOST);
+ this->sock_fd.fd = -1;
+ this->protocol = GST_TCP_PROTOCOL_NONE;
+ this->caps = NULL;
+
+ GST_OBJECT_FLAG_UNSET (this, GST_TCP_CLIENT_SRC_OPEN);
+}
+
+static void
+gst_tcp_client_src_finalize (GObject * gobject)
+{
+ GstTCPClientSrc *this = GST_TCP_CLIENT_SRC (gobject);
+
+ g_free (this->host);
+
+ G_OBJECT_CLASS (parent_class)->finalize (gobject);
+}
+
+static GstCaps *
+gst_tcp_client_src_getcaps (GstBaseSrc * bsrc)
+{
+ GstTCPClientSrc *src;
+ GstCaps *caps = NULL;
+
+ src = GST_TCP_CLIENT_SRC (bsrc);
+
+ if (!GST_OBJECT_FLAG_IS_SET (src, GST_TCP_CLIENT_SRC_OPEN))
+ caps = gst_caps_new_any ();
+ else if (src->caps)
+ caps = gst_caps_copy (src->caps);
+ else
+ caps = gst_caps_new_any ();
+ GST_DEBUG_OBJECT (src, "returning caps %" GST_PTR_FORMAT, caps);
+ g_assert (GST_IS_CAPS (caps));
+ return caps;
+}
+
+static GstFlowReturn
+gst_tcp_client_src_create (GstPushSrc * psrc, GstBuffer ** outbuf)
+{
+ GstTCPClientSrc *src;
+ GstFlowReturn ret = GST_FLOW_OK;
+
+ src = GST_TCP_CLIENT_SRC (psrc);
+
+ if (!GST_OBJECT_FLAG_IS_SET (src, GST_TCP_CLIENT_SRC_OPEN))
+ goto wrong_state;
+
+ GST_LOG_OBJECT (src, "asked for a buffer");
+
+ /* read the buffer header if we're using a protocol */
+ switch (src->protocol) {
+ case GST_TCP_PROTOCOL_NONE:
+ ret = gst_tcp_read_buffer (GST_ELEMENT (src), src->sock_fd.fd,
+ src->fdset, outbuf);
+ break;
+
+ case GST_TCP_PROTOCOL_GDP:
+ /* get the caps if we're using GDP */
+ if (!src->caps_received) {
+ GstCaps *caps;
+
+ GST_DEBUG_OBJECT (src, "getting caps through GDP");
+ ret = gst_tcp_gdp_read_caps (GST_ELEMENT (src), src->sock_fd.fd,
+ src->fdset, &caps);
+
+ if (ret != GST_FLOW_OK)
+ goto no_caps;
+
+ src->caps_received = TRUE;
+ src->caps = caps;
+ }
+
+ ret = gst_tcp_gdp_read_buffer (GST_ELEMENT (src), src->sock_fd.fd,
+ src->fdset, outbuf);
+ break;
+ default:
+ /* need to assert as buf == NULL */
+ g_assert ("Unhandled protocol type");
+ break;
+ }
+
+ if (ret == GST_FLOW_OK) {
+ GST_LOG_OBJECT (src,
+ "Returning buffer from _get of size %d, ts %"
+ GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT
+ ", offset %" G_GINT64_FORMAT ", offset_end %" G_GINT64_FORMAT,
+ GST_BUFFER_SIZE (*outbuf),
+ GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (*outbuf)),
+ GST_TIME_ARGS (GST_BUFFER_DURATION (*outbuf)),
+ GST_BUFFER_OFFSET (*outbuf), GST_BUFFER_OFFSET_END (*outbuf));
+
+ gst_buffer_set_caps (*outbuf, src->caps);
+ }
+
+ return ret;
+
+wrong_state:
+ {
+ GST_DEBUG_OBJECT (src, "connection to closed, cannot read data");
+ return GST_FLOW_WRONG_STATE;
+ }
+no_caps:
+ {
+ GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
+ ("Could not read caps through GDP"));
+ return ret;
+ }
+}
+
+static void
+gst_tcp_client_src_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstTCPClientSrc *tcpclientsrc = GST_TCP_CLIENT_SRC (object);
+
+ switch (prop_id) {
+ case PROP_HOST:
+ if (!g_value_get_string (value)) {
+ g_warning ("host property cannot be NULL");
+ break;
+ }
+ g_free (tcpclientsrc->host);
+ tcpclientsrc->host = g_strdup (g_value_get_string (value));
+ break;
+ case PROP_PORT:
+ tcpclientsrc->port = g_value_get_int (value);
+ break;
+ case PROP_PROTOCOL:
+ tcpclientsrc->protocol = g_value_get_enum (value);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_tcp_client_src_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstTCPClientSrc *tcpclientsrc = GST_TCP_CLIENT_SRC (object);
+
+ switch (prop_id) {
+ case PROP_HOST:
+ g_value_set_string (value, tcpclientsrc->host);
+ break;
+ case PROP_PORT:
+ g_value_set_int (value, tcpclientsrc->port);
+ break;
+ case PROP_PROTOCOL:
+ g_value_set_enum (value, tcpclientsrc->protocol);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+/* create a socket for connecting to remote server */
+static gboolean
+gst_tcp_client_src_start (GstBaseSrc * bsrc)
+{
+ int ret;
+ gchar *ip;
+ GstTCPClientSrc *src = GST_TCP_CLIENT_SRC (bsrc);
+
+ if ((src->fdset = gst_poll_new (TRUE)) == NULL)
+ goto socket_pair;
+
+ /* create receiving client socket */
+ GST_DEBUG_OBJECT (src, "opening receiving client socket to %s:%d",
+ src->host, src->port);
+
+ if ((src->sock_fd.fd = socket (AF_INET, SOCK_STREAM, 0)) == -1)
+ goto no_socket;
+
+ GST_DEBUG_OBJECT (src, "opened receiving client socket with fd %d",
+ src->sock_fd.fd);
+ GST_OBJECT_FLAG_SET (src, GST_TCP_CLIENT_SRC_OPEN);
+
+ /* look up name if we need to */
+ if (!(ip = gst_tcp_host_to_ip (GST_ELEMENT (src), src->host)))
+ goto name_resolv;
+
+ GST_DEBUG_OBJECT (src, "IP address for host %s is %s", src->host, ip);
+
+ /* connect to server */
+ memset (&src->server_sin, 0, sizeof (src->server_sin));
+ src->server_sin.sin_family = AF_INET; /* network socket */
+ src->server_sin.sin_port = htons (src->port); /* on port */
+ src->server_sin.sin_addr.s_addr = inet_addr (ip); /* on host ip */
+ g_free (ip);
+
+ GST_DEBUG_OBJECT (src, "connecting to server");
+ ret = connect (src->sock_fd.fd, (struct sockaddr *) &src->server_sin,
+ sizeof (src->server_sin));
+ if (ret)
+ goto connect_failed;
+
+ /* add the socket to the poll */
+ gst_poll_add_fd (src->fdset, &src->sock_fd);
+ gst_poll_fd_ctl_read (src->fdset, &src->sock_fd, TRUE);
+
+ return TRUE;
+
+socket_pair:
+ {
+ GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ_WRITE, (NULL),
+ GST_ERROR_SYSTEM);
+ return FALSE;
+ }
+no_socket:
+ {
+ GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), GST_ERROR_SYSTEM);
+ return FALSE;
+ }
+name_resolv:
+ {
+ gst_tcp_client_src_stop (GST_BASE_SRC (src));
+ return FALSE;
+ }
+connect_failed:
+ {
+ gst_tcp_client_src_stop (GST_BASE_SRC (src));
+ switch (errno) {
+ case ECONNREFUSED:
+ GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
+ (_("Connection to %s:%d refused."), src->host, src->port), (NULL));
+ break;
+ default:
+ GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
+ ("connect to %s:%d failed: %s", src->host, src->port,
+ g_strerror (errno)));
+ break;
+ }
+ 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;
+
+ src = GST_TCP_CLIENT_SRC (bsrc);
+
+ GST_DEBUG_OBJECT (src, "closing socket");
+
+ if (src->fdset != NULL) {
+ gst_poll_free (src->fdset);
+ src->fdset = NULL;
+ }
+
+ gst_tcp_socket_close (&src->sock_fd);
+ src->caps_received = FALSE;
+ if (src->caps) {
+ gst_caps_unref (src->caps);
+ src->caps = 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");
+ gst_poll_set_flushing (src->fdset, TRUE);
+
+ 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");
+ gst_poll_set_flushing (src->fdset, FALSE);
+
+ return TRUE;
+}
projects / mafwsubrenderer / blobdiff