2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
3 * Copyright (C) <2004> Thomas Vander Stichele <thomas at apestaart dot org>
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 * Boston, MA 02111-1307, USA.
26 #include <gst/gst-i18n-plugin.h>
28 #include "gsttcpserversrc.h"
30 #include <sys/ioctl.h>
32 #ifdef HAVE_FIONREAD_IN_SYS_FILIO
33 #include <sys/filio.h>
36 GST_DEBUG_CATEGORY (tcpserversrc_debug);
37 #define GST_CAT_DEFAULT tcpserversrc_debug
39 #define TCP_DEFAULT_PORT 4953
40 #define TCP_DEFAULT_HOST NULL /* listen on all interfaces */
41 #define TCP_BACKLOG 1 /* client connection queue */
43 /* elementfactory information */
44 static GstElementDetails gst_tcpserversrc_details =
45 GST_ELEMENT_DETAILS ("TCP Server source",
47 "Receive data as a server over the network via TCP",
48 "Thomas Vander Stichele <thomas at apestaart dot org>");
50 /* TCPServerSrc signals and args */
64 static void gst_tcpserversrc_base_init (gpointer g_class);
65 static void gst_tcpserversrc_class_init (GstTCPServerSrc * klass);
66 static void gst_tcpserversrc_init (GstTCPServerSrc * tcpserversrc);
68 static GstData *gst_tcpserversrc_get (GstPad * pad);
69 static GstElementStateReturn gst_tcpserversrc_change_state (GstElement *
72 static void gst_tcpserversrc_set_property (GObject * object, guint prop_id,
73 const GValue * value, GParamSpec * pspec);
74 static void gst_tcpserversrc_get_property (GObject * object, guint prop_id,
75 GValue * value, GParamSpec * pspec);
76 static void gst_tcpserversrc_set_clock (GstElement * element, GstClock * clock);
78 static GstElementClass *parent_class = NULL;
80 /*static guint gst_tcpserversrc_signals[LAST_SIGNAL] = { 0 }; */
83 gst_tcpserversrc_get_type (void)
85 static GType tcpserversrc_type = 0;
88 if (!tcpserversrc_type) {
89 static const GTypeInfo tcpserversrc_info = {
90 sizeof (GstTCPServerSrcClass),
91 gst_tcpserversrc_base_init,
93 (GClassInitFunc) gst_tcpserversrc_class_init,
96 sizeof (GstTCPServerSrc),
98 (GInstanceInitFunc) gst_tcpserversrc_init,
103 g_type_register_static (GST_TYPE_ELEMENT, "GstTCPServerSrc",
104 &tcpserversrc_info, 0);
106 return tcpserversrc_type;
110 gst_tcpserversrc_base_init (gpointer g_class)
112 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
114 gst_element_class_set_details (element_class, &gst_tcpserversrc_details);
118 gst_tcpserversrc_class_init (GstTCPServerSrc * klass)
120 GObjectClass *gobject_class;
121 GstElementClass *gstelement_class;
123 gobject_class = (GObjectClass *) klass;
124 gstelement_class = (GstElementClass *) klass;
126 parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
128 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PORT,
129 g_param_spec_int ("port", "Port", "The port to listen to",
130 0, 32768, TCP_DEFAULT_PORT, G_PARAM_READWRITE));
131 g_object_class_install_property (gobject_class, ARG_PROTOCOL,
132 g_param_spec_enum ("protocol", "Protocol", "The protocol to wrap data in",
133 GST_TYPE_TCP_PROTOCOL_TYPE, GST_TCP_PROTOCOL_TYPE_GDP,
135 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_HOST,
136 g_param_spec_string ("host", "Host", "The hostname to listen",
137 TCP_DEFAULT_HOST, G_PARAM_READWRITE));
139 gobject_class->set_property = gst_tcpserversrc_set_property;
140 gobject_class->get_property = gst_tcpserversrc_get_property;
142 gstelement_class->change_state = gst_tcpserversrc_change_state;
143 gstelement_class->set_clock = gst_tcpserversrc_set_clock;
145 GST_DEBUG_CATEGORY_INIT (tcpserversrc_debug, "tcpserversrc", 0,
146 "TCP Server Source");
150 gst_tcpserversrc_set_clock (GstElement * element, GstClock * clock)
152 GstTCPServerSrc *tcpserversrc;
154 tcpserversrc = GST_TCPSERVERSRC (element);
156 tcpserversrc->clock = clock;
160 gst_tcpserversrc_init (GstTCPServerSrc * this)
162 /* create the src pad */
163 this->srcpad = gst_pad_new ("src", GST_PAD_SRC);
164 gst_element_add_pad (GST_ELEMENT (this), this->srcpad);
165 gst_pad_set_get_function (this->srcpad, gst_tcpserversrc_get);
167 this->server_port = TCP_DEFAULT_PORT;
168 this->host = TCP_DEFAULT_HOST;
170 this->server_sock_fd = -1;
171 this->client_sock_fd = -1;
173 this->protocol = GST_TCP_PROTOCOL_TYPE_GDP;
175 GST_FLAG_UNSET (this, GST_TCPSERVERSRC_OPEN);
178 /* read the gdp caps packet from the socket */
180 gst_tcpserversrc_gdp_read_caps (GstTCPServerSrc * this)
182 size_t header_length = GST_DP_HEADER_LENGTH;
184 guint8 *header = NULL;
185 guint8 *payload = NULL;
190 header = g_malloc (header_length);
192 readsize = header_length;
193 GST_LOG_OBJECT (this, "Reading %d bytes for caps packet header", readsize);
194 ret = read (this->client_sock_fd, header, readsize);
196 GST_ELEMENT_ERROR (this, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);
199 g_assert (ret == readsize);
201 if (!gst_dp_validate_header (header_length, header)) {
202 GST_ELEMENT_ERROR (this, RESOURCE, READ, (NULL),
203 ("GDP caps packet header does not validate"));
208 readsize = gst_dp_header_payload_length (header);
209 payload = g_malloc (readsize);
210 GST_LOG_OBJECT (this, "Reading %d bytes for caps packet payload", readsize);
211 ret = read (this->client_sock_fd, payload, readsize);
213 GST_ELEMENT_ERROR (this, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);
217 g_assert (ret == readsize);
219 if (!gst_dp_validate_payload (readsize, header, payload)) {
220 GST_ELEMENT_ERROR (this, RESOURCE, READ, (NULL),
221 ("GDP caps packet payload does not validate"));
227 caps = gst_dp_caps_from_packet (header_length, header, payload);
228 string = gst_caps_to_string (caps);
229 GST_DEBUG_OBJECT (this, "retrieved GDP caps from packet payload: %s", string);
237 /* read the gdp buffer header from the socket
239 * representing the new GstBuffer to read data into, or an EOS event
242 gst_tcpserversrc_gdp_read_header (GstTCPServerSrc * this)
244 size_t header_length = GST_DP_HEADER_LENGTH;
246 guint8 *header = NULL;
250 header = g_malloc (header_length);
252 readsize = header_length;
253 GST_LOG_OBJECT (this, "Reading %d bytes for buffer packet header", readsize);
254 ret = read (this->client_sock_fd, header, readsize);
255 /* if we read 0 bytes, and we're blocking, we hit eos */
257 GST_DEBUG ("blocking read returns 0, EOS");
258 gst_element_set_eos (GST_ELEMENT (this));
259 return GST_DATA (gst_event_new (GST_EVENT_EOS));
262 GST_ELEMENT_ERROR (this, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);
265 if (ret != readsize) {
266 g_warning ("Wanted %d bytes, got %d bytes", (int) readsize, (int) ret);
268 g_assert (ret == readsize);
270 if (!gst_dp_validate_header (header_length, header)) {
271 GST_ELEMENT_ERROR (this, RESOURCE, READ, (NULL),
272 ("GDP buffer packet header does not validate"));
276 GST_LOG_OBJECT (this, "validated buffer packet header");
278 buffer = gst_dp_buffer_from_header (header_length, header);
280 GST_LOG_OBJECT (this, "created new buffer %p from packet header", buffer);
281 return GST_DATA (buffer);
285 gst_tcpserversrc_get (GstPad * pad)
287 GstTCPServerSrc *src;
291 GstData *data = NULL;
292 GstBuffer *buf = NULL;
295 g_return_val_if_fail (pad != NULL, NULL);
296 g_return_val_if_fail (GST_IS_PAD (pad), NULL);
297 src = GST_TCPSERVERSRC (GST_OBJECT_PARENT (pad));
298 g_return_val_if_fail (GST_FLAG_IS_SET (src, GST_TCPSERVERSRC_OPEN), NULL);
300 /* read the buffer header if we're using a protocol */
301 switch (src->protocol) {
304 case GST_TCP_PROTOCOL_TYPE_NONE:
305 /* do a blocking select on the socket */
307 FD_SET (src->client_sock_fd, &testfds);
309 select (src->client_sock_fd + 1, &testfds, (fd_set *) 0, (fd_set *) 0,
311 /* no action (0) is an error too in our case */
313 GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
314 ("select failed: %s", g_strerror (errno)));
317 /* ask how much is available for reading on the socket */
318 ret = ioctl (src->client_sock_fd, FIONREAD, &readsize);
320 GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
321 ("ioctl failed: %s", g_strerror (errno)));
325 buf = gst_buffer_new_and_alloc (readsize);
327 case GST_TCP_PROTOCOL_TYPE_GDP:
328 /* if we haven't received caps yet, we should get them first */
329 if (!src->caps_received) {
332 if (!(caps = gst_tcpserversrc_gdp_read_caps (src))) {
333 GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
334 ("Could not read caps through GDP"));
337 src->caps_received = TRUE;
338 string = gst_caps_to_string (caps);
339 GST_DEBUG_OBJECT (src, "Received caps through GDP: %s", string);
342 if (!gst_pad_try_set_caps (pad, caps)) {
343 g_warning ("Could not set caps");
348 /* now receive the buffer header */
349 if (!(data = gst_tcpserversrc_gdp_read_header (src))) {
350 GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
351 ("Could not read data header through GDP"));
354 if (GST_IS_EVENT (data))
356 buf = GST_BUFFER (data);
358 GST_LOG_OBJECT (src, "Going to read data from socket into buffer %p",
360 /* use this new buffer to read data into */
361 readsize = GST_BUFFER_SIZE (buf);
364 g_warning ("Unhandled protocol type");
368 GST_LOG_OBJECT (src, "Reading %d bytes", readsize);
370 gst_tcp_socket_read (src->client_sock_fd, GST_BUFFER_DATA (buf),
373 GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);
377 /* if we read 0 bytes, and we're blocking, we hit eos */
379 GST_DEBUG ("blocking read returns 0, EOS");
380 gst_buffer_unref (buf);
381 gst_element_set_eos (GST_ELEMENT (src));
382 return GST_DATA (gst_event_new (GST_EVENT_EOS));
386 GST_LOG_OBJECT (src, "Read %d bytes", readsize);
387 GST_BUFFER_SIZE (buf) = readsize;
388 GST_BUFFER_MAXSIZE (buf) = readsize;
389 GST_BUFFER_OFFSET (buf) = src->curoffset;
390 GST_BUFFER_OFFSET_END (buf) = src->curoffset + readsize;
391 src->curoffset += readsize;
392 return GST_DATA (buf);
397 gst_tcpserversrc_set_property (GObject * object, guint prop_id,
398 const GValue * value, GParamSpec * pspec)
400 GstTCPServerSrc *tcpserversrc;
402 g_return_if_fail (GST_IS_TCPSERVERSRC (object));
403 tcpserversrc = GST_TCPSERVERSRC (object);
407 tcpserversrc->server_port = g_value_get_int (value);
410 tcpserversrc->protocol = g_value_get_enum (value);
413 if (tcpserversrc->host)
414 g_free (tcpserversrc->host);
415 tcpserversrc->host = g_strdup (g_value_get_string (value));
418 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
424 gst_tcpserversrc_get_property (GObject * object, guint prop_id, GValue * value,
427 GstTCPServerSrc *tcpserversrc;
429 g_return_if_fail (GST_IS_TCPSERVERSRC (object));
430 tcpserversrc = GST_TCPSERVERSRC (object);
434 g_value_set_int (value, tcpserversrc->server_port);
437 g_value_set_enum (value, tcpserversrc->protocol);
440 g_value_set_string (value, tcpserversrc->host);
443 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
450 gst_tcpserversrc_init_receive (GstTCPServerSrc * this)
454 /* reset caps_received flag */
455 this->caps_received = FALSE;
457 /* create the server listener socket */
458 if ((this->server_sock_fd = socket (AF_INET, SOCK_STREAM, 0)) == -1) {
459 GST_ELEMENT_ERROR (this, RESOURCE, OPEN_READ, (NULL), GST_ERROR_SYSTEM);
462 GST_DEBUG_OBJECT (this, "opened receiving server socket with fd %d",
463 this->server_sock_fd);
465 /* make address reusable */
466 if (setsockopt (this->server_sock_fd, SOL_SOCKET, SO_REUSEADDR, &ret,
468 GST_ELEMENT_ERROR (this, RESOURCE, SETTINGS, (NULL),
469 ("Could not setsockopt: %s", g_strerror (errno)));
473 /* name the socket */
474 memset (&this->server_sin, 0, sizeof (this->server_sin));
475 this->server_sin.sin_family = AF_INET; /* network socket */
476 this->server_sin.sin_port = htons (this->server_port); /* on port */
478 gchar *host = gst_tcp_host_to_ip (GST_ELEMENT (this), this->host);
483 this->server_sin.sin_addr.s_addr = inet_addr (host);
486 this->server_sin.sin_addr.s_addr = htonl (INADDR_ANY);
489 GST_DEBUG_OBJECT (this, "binding server socket to address");
490 ret = bind (this->server_sock_fd, (struct sockaddr *) &this->server_sin,
491 sizeof (this->server_sin));
496 GST_ELEMENT_ERROR (this, RESOURCE, OPEN_READ, (NULL),
497 ("bind failed: %s", g_strerror (errno)));
503 GST_DEBUG_OBJECT (this, "listening on server socket %d with queue of %d",
504 this->server_sock_fd, TCP_BACKLOG);
505 if (listen (this->server_sock_fd, TCP_BACKLOG) == -1) {
506 GST_ELEMENT_ERROR (this, RESOURCE, OPEN_READ, (NULL),
507 ("Could not listen on server socket: %s", g_strerror (errno)));
511 /* FIXME: maybe we should think about moving actual client accepting
513 GST_DEBUG_OBJECT (this, "waiting for client");
514 this->client_sock_fd =
515 accept (this->server_sock_fd, (struct sockaddr *) &this->client_sin,
516 &this->client_sin_len);
517 if (this->client_sock_fd == -1) {
518 GST_ELEMENT_ERROR (this, RESOURCE, OPEN_READ, (NULL),
519 ("Could not accept client on server socket: %s", g_strerror (errno)));
522 GST_DEBUG_OBJECT (this, "received client");
524 GST_FLAG_SET (this, GST_TCPSERVERSRC_OPEN);
529 gst_tcpserversrc_close (GstTCPServerSrc * this)
531 if (this->server_sock_fd != -1) {
532 close (this->server_sock_fd);
533 this->server_sock_fd = -1;
535 if (this->client_sock_fd != -1) {
536 close (this->client_sock_fd);
537 this->client_sock_fd = -1;
539 GST_FLAG_UNSET (this, GST_TCPSERVERSRC_OPEN);
542 static GstElementStateReturn
543 gst_tcpserversrc_change_state (GstElement * element)
545 g_return_val_if_fail (GST_IS_TCPSERVERSRC (element), GST_STATE_FAILURE);
547 if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
548 if (GST_FLAG_IS_SET (element, GST_TCPSERVERSRC_OPEN))
549 gst_tcpserversrc_close (GST_TCPSERVERSRC (element));
551 if (!GST_FLAG_IS_SET (element, GST_TCPSERVERSRC_OPEN)) {
552 if (!gst_tcpserversrc_init_receive (GST_TCPSERVERSRC (element)))
553 return GST_STATE_FAILURE;
557 if (GST_ELEMENT_CLASS (parent_class)->change_state)
558 return GST_ELEMENT_CLASS (parent_class)->change_state (element);
560 return GST_STATE_SUCCESS;