diff -r 000000000000 -r 0e761a78d257 gst_plugins_base/gst/tcp/gsttcpclientsrc.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gst_plugins_base/gst/tcp/gsttcpclientsrc.c Thu Dec 17 08:53:32 2009 +0200 @@ -0,0 +1,414 @@ +/* GStreamer + * Copyright (C) <1999> Erik Walthinsen + * Copyright (C) <2004> Thomas Vander Stichele + * + * 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. + */ + + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifdef __SYMBIAN32__ +#include "gst/gst-i18n-plugin.h" +#else +#include +#endif +#include "gsttcp.h" +#include "gsttcpclientsrc.h" +#include /* memset */ +#include +#include +#include + + +GST_DEBUG_CATEGORY_STATIC (tcpclientsrc_debug); +#define GST_CAT_DEFAULT tcpclientsrc_debug + +#define MAX_READ_SIZE 4 * 1024 + + +static const GstElementDetails gst_tcp_client_src_details = +GST_ELEMENT_DETAILS ("TCP client source", + "Source/Network", + "Receive data as a client over the network via TCP", + "Thomas Vander Stichele "); + +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 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 (element_class, &gst_tcp_client_src_details); +} + +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_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_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)); + + 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; + + 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_base_src_set_live (GST_BASE_SRC (this), TRUE); + + 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) { + 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)); + return FALSE; + break; + default: + GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), + ("connect to %s:%d failed: %s", src->host, src->port, + g_strerror (errno))); + return FALSE; + break; + } + } + + 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; + } +} + +/* 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_poll_set_flushing (src->fdset, TRUE); + + return TRUE; +}