--- /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-tcpserversrc
+ * @see_also: #tcpserversink
+ *
+ * <refsect2>
+ * <title>Example launch line</title>
+ * |[
+ * # server:
+ * gst-launch tcpserversrc protocol=none port=3000 ! fdsink fd=2
+ * # client:
+ * gst-launch fdsrc fd=1 ! tcpclientsink protocol=none port=3000
+ * ]|
+ * </refsect2>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst-i18n-plugin.h>
+#include "gsttcp.h"
+#include "gsttcpserversrc.h"
+#include <string.h> /* memset */
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+
+
+GST_DEBUG_CATEGORY_STATIC (tcpserversrc_debug);
+#define GST_CAT_DEFAULT tcpserversrc_debug
+
+#define TCP_DEFAULT_LISTEN_HOST NULL /* listen on all interfaces */
+#define TCP_BACKLOG 1 /* client connection queue */
+
+
+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 (GstTCPServerSrc, gst_tcp_server_src, GstPushSrc,
+ GST_TYPE_PUSH_SRC);
+
+
+static void gst_tcp_server_src_finalize (GObject * gobject);
+
+static gboolean gst_tcp_server_src_start (GstBaseSrc * bsrc);
+static gboolean gst_tcp_server_src_stop (GstBaseSrc * bsrc);
+static gboolean gst_tcp_server_src_unlock (GstBaseSrc * bsrc);
+static GstFlowReturn gst_tcp_server_src_create (GstPushSrc * psrc,
+ GstBuffer ** buf);
+
+static void gst_tcp_server_src_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_tcp_server_src_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+
+static void
+gst_tcp_server_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 server source", "Source/Network",
+ "Receive data as a server over the network via TCP",
+ "Thomas Vander Stichele <thomas at apestaart dot org>");
+}
+
+static void
+gst_tcp_server_src_class_init (GstTCPServerSrcClass * 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_server_src_set_property;
+ gobject_class->get_property = gst_tcp_server_src_get_property;
+ gobject_class->finalize = gst_tcp_server_src_finalize;
+
+ g_object_class_install_property (gobject_class, PROP_HOST,
+ g_param_spec_string ("host", "Host", "The hostname to listen as",
+ TCP_DEFAULT_LISTEN_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 listen to",
+ 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->start = gst_tcp_server_src_start;
+ gstbasesrc_class->stop = gst_tcp_server_src_stop;
+ gstbasesrc_class->unlock = gst_tcp_server_src_unlock;
+
+ gstpush_src_class->create = gst_tcp_server_src_create;
+
+ GST_DEBUG_CATEGORY_INIT (tcpserversrc_debug, "tcpserversrc", 0,
+ "TCP Server Source");
+}
+
+static void
+gst_tcp_server_src_init (GstTCPServerSrc * src, GstTCPServerSrcClass * g_class)
+{
+ src->server_port = TCP_DEFAULT_PORT;
+ src->host = g_strdup (TCP_DEFAULT_HOST);
+ src->server_sock_fd.fd = -1;
+ src->client_sock_fd.fd = -1;
+ src->protocol = GST_TCP_PROTOCOL_NONE;
+
+ GST_OBJECT_FLAG_UNSET (src, GST_TCP_SERVER_SRC_OPEN);
+}
+
+static void
+gst_tcp_server_src_finalize (GObject * gobject)
+{
+ GstTCPServerSrc *src = GST_TCP_SERVER_SRC (gobject);
+
+ g_free (src->host);
+
+ G_OBJECT_CLASS (parent_class)->finalize (gobject);
+}
+
+static GstFlowReturn
+gst_tcp_server_src_create (GstPushSrc * psrc, GstBuffer ** outbuf)
+{
+ GstTCPServerSrc *src;
+ GstFlowReturn ret = GST_FLOW_OK;
+
+ src = GST_TCP_SERVER_SRC (psrc);
+
+ if (!GST_OBJECT_FLAG_IS_SET (src, GST_TCP_SERVER_SRC_OPEN))
+ goto wrong_state;
+
+restart:
+ if (src->client_sock_fd.fd >= 0) {
+ /* if we have a client, wait for read */
+ gst_poll_fd_ctl_read (src->fdset, &src->server_sock_fd, FALSE);
+ gst_poll_fd_ctl_read (src->fdset, &src->client_sock_fd, TRUE);
+ } else {
+ /* else wait on server socket for connections */
+ gst_poll_fd_ctl_read (src->fdset, &src->server_sock_fd, TRUE);
+ }
+
+ /* no action (0) is an error too in our case */
+ if ((ret = gst_poll_wait (src->fdset, GST_CLOCK_TIME_NONE)) <= 0) {
+ if (ret == -1 && errno == EBUSY)
+ goto select_cancelled;
+ else
+ goto select_error;
+ }
+
+ /* if we have no client socket we can accept one now */
+ if (src->client_sock_fd.fd < 0) {
+ if (gst_poll_fd_can_read (src->fdset, &src->server_sock_fd)) {
+ if ((src->client_sock_fd.fd =
+ accept (src->server_sock_fd.fd,
+ (struct sockaddr *) &src->client_sin,
+ &src->client_sin_len)) == -1)
+ goto accept_error;
+
+ gst_poll_add_fd (src->fdset, &src->client_sock_fd);
+ }
+ /* and restart now to poll the socket. */
+ goto restart;
+ }
+
+ GST_LOG_OBJECT (src, "asked for a buffer");
+
+ switch (src->protocol) {
+ case GST_TCP_PROTOCOL_NONE:
+ ret = gst_tcp_read_buffer (GST_ELEMENT (src), src->client_sock_fd.fd,
+ src->fdset, outbuf);
+ break;
+
+ case GST_TCP_PROTOCOL_GDP:
+ if (!src->caps_received) {
+ GstCaps *caps;
+ gchar *string;
+
+ ret = gst_tcp_gdp_read_caps (GST_ELEMENT (src), src->client_sock_fd.fd,
+ src->fdset, &caps);
+
+ if (ret == GST_FLOW_WRONG_STATE)
+ goto gdp_cancelled;
+
+ if (ret != GST_FLOW_OK)
+ goto gdp_caps_read_error;
+
+ src->caps_received = TRUE;
+ string = gst_caps_to_string (caps);
+ GST_DEBUG_OBJECT (src, "Received caps through GDP: %s", string);
+ g_free (string);
+
+ gst_pad_set_caps (GST_BASE_SRC_PAD (psrc), caps);
+ }
+
+ ret = gst_tcp_gdp_read_buffer (GST_ELEMENT (src), src->client_sock_fd.fd,
+ src->fdset, outbuf);
+
+ if (ret == GST_FLOW_OK)
+ gst_buffer_set_caps (*outbuf, GST_PAD_CAPS (GST_BASE_SRC_PAD (src)));
+
+ 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));
+ }
+
+ return ret;
+
+wrong_state:
+ {
+ GST_DEBUG_OBJECT (src, "connection to closed, cannot read data");
+ return GST_FLOW_WRONG_STATE;
+ }
+select_error:
+ {
+ GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
+ ("Select error: %s", g_strerror (errno)));
+ return GST_FLOW_ERROR;
+ }
+select_cancelled:
+ {
+ GST_DEBUG_OBJECT (src, "select canceled");
+ return GST_FLOW_WRONG_STATE;
+ }
+accept_error:
+ {
+ GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
+ ("Could not accept client on server socket: %s", g_strerror (errno)));
+ return GST_FLOW_ERROR;
+ }
+gdp_cancelled:
+ {
+ GST_DEBUG_OBJECT (src, "reading gdp canceled");
+ return GST_FLOW_WRONG_STATE;
+ }
+gdp_caps_read_error:
+ {
+ /* if we did not get canceled, report an error */
+ if (ret != GST_FLOW_WRONG_STATE) {
+ GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
+ ("Could not read caps through GDP"));
+ }
+ return ret;
+ }
+}
+
+static void
+gst_tcp_server_src_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstTCPServerSrc *tcpserversrc = GST_TCP_SERVER_SRC (object);
+
+ switch (prop_id) {
+ case PROP_HOST:
+ if (!g_value_get_string (value)) {
+ g_warning ("host property cannot be NULL");
+ break;
+ }
+ g_free (tcpserversrc->host);
+ tcpserversrc->host = g_strdup (g_value_get_string (value));
+ break;
+ case PROP_PORT:
+ tcpserversrc->server_port = g_value_get_int (value);
+ break;
+ case PROP_PROTOCOL:
+ tcpserversrc->protocol = g_value_get_enum (value);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_tcp_server_src_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstTCPServerSrc *tcpserversrc = GST_TCP_SERVER_SRC (object);
+
+ switch (prop_id) {
+ case PROP_HOST:
+ g_value_set_string (value, tcpserversrc->host);
+ break;
+ case PROP_PORT:
+ g_value_set_int (value, tcpserversrc->server_port);
+ break;
+ case PROP_PROTOCOL:
+ g_value_set_enum (value, tcpserversrc->protocol);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+/* set up server */
+static gboolean
+gst_tcp_server_src_start (GstBaseSrc * bsrc)
+{
+ int ret;
+ GstTCPServerSrc *src = GST_TCP_SERVER_SRC (bsrc);
+
+ /* reset caps_received flag */
+ src->caps_received = FALSE;
+
+ /* create the server listener socket */
+ if ((src->server_sock_fd.fd = socket (AF_INET, SOCK_STREAM, 0)) == -1)
+ goto socket_error;
+
+ GST_DEBUG_OBJECT (src, "opened receiving server socket with fd %d",
+ src->server_sock_fd.fd);
+
+ /* make address reusable */
+ ret = 1;
+ if (setsockopt (src->server_sock_fd.fd, SOL_SOCKET, SO_REUSEADDR, &ret,
+ sizeof (int)) < 0)
+ goto sock_opt;
+
+ /* name the socket */
+ 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->server_port); /* on port */
+ if (src->host) {
+ gchar *host;
+
+ if (!(host = gst_tcp_host_to_ip (GST_ELEMENT (src), src->host)))
+ goto host_error;
+ src->server_sin.sin_addr.s_addr = inet_addr (host);
+ g_free (host);
+ } else
+ src->server_sin.sin_addr.s_addr = htonl (INADDR_ANY);
+
+ /* bind it */
+ GST_DEBUG_OBJECT (src, "binding server socket to address");
+ if ((ret = bind (src->server_sock_fd.fd, (struct sockaddr *) &src->server_sin,
+ sizeof (src->server_sin))) < 0)
+ goto bind_error;
+
+ GST_DEBUG_OBJECT (src, "listening on server socket %d with queue of %d",
+ src->server_sock_fd.fd, TCP_BACKLOG);
+
+ if (listen (src->server_sock_fd.fd, TCP_BACKLOG) == -1)
+ goto listen_error;
+
+ /* create an fdset to keep track of our file descriptors */
+ if ((src->fdset = gst_poll_new (TRUE)) == NULL)
+ goto socket_pair;
+
+ gst_poll_add_fd (src->fdset, &src->server_sock_fd);
+
+ GST_DEBUG_OBJECT (src, "received client");
+
+ GST_OBJECT_FLAG_SET (src, GST_TCP_SERVER_SRC_OPEN);
+
+ return TRUE;
+
+ /* ERRORS */
+socket_error:
+ {
+ GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), GST_ERROR_SYSTEM);
+ return FALSE;
+ }
+sock_opt:
+ {
+ GST_ELEMENT_ERROR (src, RESOURCE, SETTINGS, (NULL),
+ ("Could not setsockopt: %s", g_strerror (errno)));
+ gst_tcp_socket_close (&src->server_sock_fd);
+ return FALSE;
+ }
+host_error:
+ {
+ gst_tcp_socket_close (&src->server_sock_fd);
+ return FALSE;
+ }
+bind_error:
+ {
+ gst_tcp_socket_close (&src->server_sock_fd);
+ switch (errno) {
+ default:
+ GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
+ ("bind failed: %s", g_strerror (errno)));
+ break;
+ }
+ return FALSE;
+ }
+listen_error:
+ {
+ gst_tcp_socket_close (&src->server_sock_fd);
+ GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
+ ("Could not listen on server socket: %s", g_strerror (errno)));
+ return FALSE;
+ }
+socket_pair:
+ {
+ GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ_WRITE, (NULL),
+ GST_ERROR_SYSTEM);
+ gst_tcp_socket_close (&src->server_sock_fd);
+ return FALSE;
+ }
+}
+
+static gboolean
+gst_tcp_server_src_stop (GstBaseSrc * bsrc)
+{
+ GstTCPServerSrc *src = GST_TCP_SERVER_SRC (bsrc);
+
+ gst_poll_free (src->fdset);
+ src->fdset = NULL;
+
+ gst_tcp_socket_close (&src->server_sock_fd);
+ gst_tcp_socket_close (&src->client_sock_fd);
+
+ GST_OBJECT_FLAG_UNSET (src, GST_TCP_SERVER_SRC_OPEN);
+
+ return TRUE;
+}
+
+/* will be called only between calls to start() and stop() */
+static gboolean
+gst_tcp_server_src_unlock (GstBaseSrc * bsrc)
+{
+ GstTCPServerSrc *src = GST_TCP_SERVER_SRC (bsrc);
+
+ gst_poll_set_flushing (src->fdset, TRUE);
+
+ return TRUE;
+}
projects / mafwsubrenderer / blobdiff