| /* GStreamer |
| * Copyright (C) <2007> Leandro Melo de Sales <leandroal@gmail.com> |
| * |
| * 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., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| /** |
| * SECTION:element-dccpclientsrc |
| * @see_also: dccpclientsink, dccpserversink, dccpserversrc |
| * |
| * This element connect to a DCCP server and send data to it. |
| * <ulink url="http://www.linuxfoundation.org/en/Net:DCCP">DCCP</ulink> (Datagram |
| * Congestion Control Protocol) is a Transport Layer protocol like |
| * TCP and UDP. |
| * |
| * <refsect2> |
| * <title>Example pipeline</title> |
| * <para> |
| * |[ |
| * gst-launch -v dccpclientsrc host=localhost port=9011 ccid=2 ! decodebin ! alsasink |
| * ]| Client |
| * |[ |
| * gst-launch -v filesrc location=music.mp3 ! mp3parse ! dccpserversink port=9011 ccid=2 |
| * ]| Server |
| * |
| * This example pipeline will send a MP3 stream to the client using DCCP. |
| * The client will decode the MP3 and play it. Run the server pipeline |
| * first than the client pipeline. If you want, you can run more than one dccpclientsrc |
| * to connect to the same server (see wait-connections property at dccpserversink). |
| * </para> |
| * </refsect2> |
| */ |
| |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include "gstdccpclientsrc.h" |
| #include "gstdccp.h" |
| #include <fcntl.h> |
| #ifdef HAVE_FIONREAD_IN_SYS_FILIO |
| #include <sys/filio.h> |
| #endif |
| |
| #define DCCP_DEFAULT_CAPS NULL |
| |
| /* signals */ |
| enum |
| { |
| SIGNAL_CONNECTED, |
| LAST_SIGNAL |
| }; |
| |
| /* properties */ |
| enum |
| { |
| PROP_0, |
| PROP_PORT, |
| PROP_HOST, |
| PROP_SOCK_FD, |
| PROP_CLOSED, |
| PROP_CCID, |
| PROP_CAPS |
| }; |
| |
| static gboolean gst_dccp_client_src_stop (GstBaseSrc * bsrc); |
| |
| GST_DEBUG_CATEGORY_STATIC (dccpclientsrc_debug); |
| |
| static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src", |
| GST_PAD_SRC, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS_ANY); |
| |
| GST_BOILERPLATE (GstDCCPClientSrc, gst_dccp_client_src, GstPushSrc, |
| GST_TYPE_PUSH_SRC); |
| |
| static guint gst_dccp_client_src_signals[LAST_SIGNAL] = { 0 }; |
| |
| /* |
| * Read a buffer from the client socket |
| * |
| * @return GST_FLOW_OK if the send operation was successful, GST_FLOW_ERROR otherwise. |
| */ |
| static GstFlowReturn |
| gst_dccp_client_src_create (GstPushSrc * psrc, GstBuffer ** outbuf) |
| { |
| GstDCCPClientSrc *src; |
| GstFlowReturn ret = GST_FLOW_OK; |
| |
| src = GST_DCCP_CLIENT_SRC (psrc); |
| |
| GST_LOG_OBJECT (src, "reading a buffer"); |
| ret = gst_dccp_read_buffer (GST_ELEMENT (src), src->sock_fd, outbuf); |
| |
| 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)); |
| |
| if (!gst_caps_is_equal (src->caps, GST_CAPS_ANY)) { |
| gst_buffer_set_caps (*outbuf, src->caps); |
| } |
| } |
| |
| return ret; |
| } |
| |
| /* |
| * Set the value of a property for the client src. |
| */ |
| static void |
| gst_dccp_client_src_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec) |
| { |
| GstDCCPClientSrc *src = GST_DCCP_CLIENT_SRC (object); |
| |
| switch (prop_id) { |
| case PROP_PORT: |
| src->port = g_value_get_int (value); |
| break; |
| case PROP_HOST: |
| if (!g_value_get_string (value)) { |
| g_warning ("host property cannot be NULL"); |
| break; |
| } |
| g_free (src->host); |
| src->host = g_strdup (g_value_get_string (value)); |
| break; |
| case PROP_SOCK_FD: |
| src->sock_fd = g_value_get_int (value); |
| break; |
| case PROP_CLOSED: |
| src->closed = g_value_get_boolean (value); |
| break; |
| case PROP_CCID: |
| src->ccid = g_value_get_int (value); |
| break; |
| case PROP_CAPS: |
| { |
| const GstCaps *new_caps_val = gst_value_get_caps (value); |
| GstCaps *new_caps; |
| GstCaps *old_caps; |
| |
| if (new_caps_val == NULL) { |
| new_caps = gst_caps_new_any (); |
| } else { |
| new_caps = gst_caps_copy (new_caps_val); |
| } |
| |
| old_caps = src->caps; |
| src->caps = new_caps; |
| if (old_caps) |
| gst_caps_unref (old_caps); |
| gst_pad_set_caps (GST_BASE_SRC (src)->srcpad, new_caps); |
| break; |
| } |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| /* |
| * Get a given property value for the client src. |
| */ |
| static void |
| gst_dccp_client_src_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec) |
| { |
| GstDCCPClientSrc *src = GST_DCCP_CLIENT_SRC (object); |
| |
| switch (prop_id) { |
| case PROP_PORT: |
| g_value_set_int (value, src->port); |
| break; |
| case PROP_HOST: |
| g_value_set_string (value, src->host); |
| break; |
| case PROP_SOCK_FD: |
| g_value_set_int (value, src->sock_fd); |
| break; |
| case PROP_CLOSED: |
| g_value_set_boolean (value, src->closed); |
| break; |
| case PROP_CCID: |
| g_value_set_int (value, src->ccid); |
| break; |
| case PROP_CAPS: |
| gst_value_set_caps (value, src->caps); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| /* |
| * Starts the element. If the sockfd property was not the default, this method |
| * will create a new socket and connect to the server. |
| * |
| * @param bsrc - the element |
| * @return TRUE if the send operation was successful, FALSE otherwise. |
| */ |
| static gboolean |
| gst_dccp_client_src_start (GstBaseSrc * bsrc) |
| { |
| GstDCCPClientSrc *src = GST_DCCP_CLIENT_SRC (bsrc); |
| |
| if (src->sock_fd == DCCP_DEFAULT_SOCK_FD) { |
| gchar *ip = NULL; |
| |
| /* look up name if we need to */ |
| if (!(ip = gst_dccp_host_to_ip (GST_ELEMENT (src), src->host))) { |
| GST_ERROR_OBJECT (src, "cannot resolve hostname"); |
| gst_dccp_client_src_stop (GST_BASE_SRC (src)); |
| return FALSE; |
| } |
| |
| /* name the server 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->port); /* on port */ |
| src->server_sin.sin_addr.s_addr = inet_addr (ip); /* on host ip */ |
| g_free (ip); |
| |
| /* create socket */ |
| if ((src->sock_fd = gst_dccp_create_new_socket (GST_ELEMENT (src))) < 0) { |
| return FALSE; |
| } |
| |
| if (!gst_dccp_set_ccid (GST_ELEMENT (src), src->sock_fd, src->ccid)) { |
| gst_dccp_client_src_stop (GST_BASE_SRC (src)); |
| return FALSE; |
| } |
| |
| if (!gst_dccp_connect_to_server (GST_ELEMENT (src), src->server_sin, |
| src->sock_fd)) { |
| gst_dccp_client_src_stop (GST_BASE_SRC (src)); |
| return FALSE; |
| } |
| |
| /* the socket is connected */ |
| g_signal_emit (src, gst_dccp_client_src_signals[SIGNAL_CONNECTED], 0, |
| src->sock_fd); |
| } |
| |
| return TRUE; |
| } |
| |
| static void |
| gst_dccp_client_src_base_init (gpointer g_class) |
| { |
| GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); |
| |
| gst_element_class_add_static_pad_template (element_class, &srctemplate); |
| |
| gst_element_class_set_static_metadata (element_class, "DCCP client source", |
| "Source/Network", |
| "Receive data as a client over the network via DCCP", |
| "E-Phone Team at Federal University of Campina Grande <leandroal@gmail.com>"); |
| } |
| |
| static void |
| gst_dccp_client_src_init (GstDCCPClientSrc * this, |
| GstDCCPClientSrcClass * g_class) |
| { |
| this->port = DCCP_DEFAULT_PORT; |
| this->host = g_strdup (DCCP_DEFAULT_HOST); |
| this->sock_fd = DCCP_DEFAULT_SOCK_FD; |
| this->closed = DCCP_DEFAULT_CLOSED; |
| this->ccid = DCCP_DEFAULT_CCID; |
| this->caps = NULL; |
| |
| gst_base_src_set_format (GST_BASE_SRC (this), GST_FORMAT_TIME); |
| |
| /* Checking if the version of the gstreamer is bigger that 0.10.15 */ |
| #if ((GST_VERSION_MAJOR > 0) || \ |
| (GST_VERSION_MAJOR == 0 && GST_VERSION_MINOR > 10) || \ |
| (GST_VERSION_MAJOR == 0 && GST_VERSION_MINOR == 10 && GST_VERSION_MICRO >= 15)) |
| gst_base_src_set_do_timestamp (GST_BASE_SRC (this), TRUE); |
| #endif |
| |
| /* FIXME is this correct? */ |
| gst_base_src_set_live (GST_BASE_SRC (this), TRUE); |
| } |
| |
| static void |
| gst_dccp_client_src_finalize (GObject * gobject) |
| { |
| GstDCCPClientSrc *this = GST_DCCP_CLIENT_SRC (gobject); |
| |
| if (this->caps) { |
| gst_caps_unref (this->caps); |
| this->caps = NULL; |
| } |
| |
| g_free (this->host); |
| |
| G_OBJECT_CLASS (parent_class)->finalize (gobject); |
| } |
| |
| static gboolean |
| gst_dccp_client_src_stop (GstBaseSrc * bsrc) |
| { |
| GstDCCPClientSrc *src; |
| |
| src = GST_DCCP_CLIENT_SRC (bsrc); |
| |
| if (src->sock_fd != DCCP_DEFAULT_SOCK_FD && src->closed) { |
| gst_dccp_socket_close (GST_ELEMENT (src), &(src->sock_fd)); |
| } |
| |
| return TRUE; |
| } |
| |
| /* |
| * Define the gst class, callbacks, etc. |
| */ |
| static void |
| gst_dccp_client_src_class_init (GstDCCPClientSrcClass * 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_dccp_client_src_set_property; |
| gobject_class->get_property = gst_dccp_client_src_get_property; |
| |
| gobject_class->finalize = gst_dccp_client_src_finalize; |
| |
| g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PORT, |
| g_param_spec_int ("port", "Port", |
| "The port to receive packets from", 0, G_MAXUINT16, |
| DCCP_DEFAULT_PORT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| g_object_class_install_property (gobject_class, PROP_HOST, |
| g_param_spec_string ("host", "Host", |
| "The host IP address to receive packets from", DCCP_DEFAULT_HOST, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| g_object_class_install_property (gobject_class, PROP_SOCK_FD, |
| g_param_spec_int ("sockfd", "Socket fd", |
| "The socket file descriptor", -1, G_MAXINT, DCCP_DEFAULT_SOCK_FD, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| g_object_class_install_property (gobject_class, PROP_CLOSED, |
| g_param_spec_boolean ("close-socket", "Close socket", |
| "Close socket at the end of stream", DCCP_DEFAULT_CLOSED, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| g_object_class_install_property (gobject_class, PROP_CAPS, |
| g_param_spec_boxed ("caps", "Caps", |
| "The caps of the source pad", GST_TYPE_CAPS, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| g_object_class_install_property (gobject_class, PROP_CCID, |
| g_param_spec_int ("ccid", "CCID", |
| "The Congestion Control IDentified to be used", 2, G_MAXINT, |
| DCCP_DEFAULT_CCID, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| /* signals */ |
| /** |
| * GstDccpClientSrc::connected: |
| * @src: the gstdccpclientsrc element that emitted this signal |
| * @fd: the connected socket file descriptor |
| * |
| * Reports that the element has connected, giving the fd of the socket |
| */ |
| gst_dccp_client_src_signals[SIGNAL_CONNECTED] = |
| g_signal_new ("connected", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST, |
| G_STRUCT_OFFSET (GstDCCPClientSrcClass, connected), NULL, NULL, |
| gst_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT); |
| |
| gstbasesrc_class->start = gst_dccp_client_src_start; |
| gstbasesrc_class->stop = gst_dccp_client_src_stop; |
| |
| gstpush_src_class->create = gst_dccp_client_src_create; |
| |
| GST_DEBUG_CATEGORY_INIT (dccpclientsrc_debug, "dccpclientsrc", 0, |
| "DCCP Client Source"); |
| } |