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gstreamer/gst-libs/gst/sdp/gstsdpmessage.c
Damien Lespiau d76e33616c gst-libs/gst/sdp/gstsdpmessage.c: Use GST_STR_NULL to avoid crashes with libcs that don't like NULL strings in printf... 
Original commit message from CVS:
Patch by: Damien Lespiau  <damien.lespiau gmail com>
* gst-libs/gst/sdp/gstsdpmessage.c: (print_media):
Use GST_STR_NULL to avoid crashes with libcs that don't
like NULL strings in printf args (such as the win32 one).
Fixes #544306.
2008-07-23 13:17:31 +00:00

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/* GStreamer
* Copyright (C) <2005,2006> Wim Taymans <wim@fluendo.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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Unless otherwise indicated, Source Code is licensed under MIT license.
* See further explanation attached in License Statement (distributed in the file
* LICENSE).
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/**
* SECTION:gstsdpmessage
* @short_description: Helper methods for dealing with SDP messages
*
* <refsect2>
* <para>
* The GstSDPMessage helper functions makes it easy to parse and create SDP
* messages.
* </para>
* </refsect2>
*
* Last reviewed on 2007-07-24 (0.10.14)
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#include <glib.h> /* for G_OS_WIN32 */
#include <gst/gstinfo.h> /* For GST_STR_NULL */
#ifdef G_OS_WIN32
#ifdef _MSC_VER
#include <Winsock2.h>
#endif
/* ws2_32.dll has getaddrinfo and freeaddrinfo on Windows XP and later.
* minwg32 headers check WINVER before allowing the use of these */
#ifndef WINVER
#define WINVER 0x0501
#endif
#include <ws2tcpip.h>
#else
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>
#endif
#include "gstsdpmessage.h"
/* FIXME, is currently allocated on the stack */
#define MAX_LINE_LEN 1024 * 16
#define FREE_STRING(field) g_free (field); (field) = NULL
#define REPLACE_STRING(field, val) FREE_STRING(field); (field) = g_strdup (val)
#define INIT_ARRAY(field, type, init_func) \
G_STMT_START { \
if (field) { \
guint i; \
for(i = 0; i < (field)->len; i++) \
init_func (&g_array_index ((field), type, i)); \
g_array_set_size ((field), 0); \
} \
else \
(field) = g_array_new (FALSE, TRUE, sizeof (type)); \
} G_STMT_END
#define FREE_ARRAY(field) \
G_STMT_START { \
if (field) \
g_array_free ((field), TRUE); \
(field) = NULL; \
} G_STMT_END
#define INIT_PTR_ARRAY(field, type, init_func) \
G_STMT_START { \
if (field) { \
guint i; \
for(i = 0; i < (field)->len; i++) \
init_func (g_array_index ((field), type, i)); \
g_array_set_size ((field), 0); \
} \
else \
(field) = g_array_new (FALSE, TRUE, sizeof (type)); \
} G_STMT_END
#define FREE_PTR_ARRAY(field) FREE_ARRAY(field)
#define DEFINE_STRING_SETTER(field) \
GstSDPResult gst_sdp_message_set_##field (GstSDPMessage *msg, const gchar *val) { \
g_free (msg->field); \
msg->field = g_strdup (val); \
return GST_SDP_OK; \
}
#define DEFINE_STRING_GETTER(field) \
const gchar* gst_sdp_message_get_##field (const GstSDPMessage *msg) { \
return msg->field; \
}
#define DEFINE_ARRAY_LEN(field) \
guint gst_sdp_message_##field##_len (const GstSDPMessage *msg) { \
return msg->field->len; \
}
#define DEFINE_ARRAY_GETTER(method, field, type) \
type * gst_sdp_message_get_##method (const GstSDPMessage *msg, guint idx) { \
return &g_array_index (msg->field, type, idx); \
}
#define DEFINE_PTR_ARRAY_LEN(field) DEFINE_ARRAY_LEN(field)
#define DEFINE_PTR_ARRAY_GETTER(method, field, type) \
type gst_sdp_message_get_##method (const GstSDPMessage *msg, guint idx) { \
return g_array_index (msg->field, type, idx); \
}
#define DEFINE_PTR_ARRAY_ADDER(method, field, type, dup_method) \
GstSDPResult gst_sdp_message_add_##method (GstSDPMessage *msg, type val) { \
type v = dup_method (val); \
g_array_append_val (msg->field, v); \
return GST_SDP_OK; \
}
static void
gst_sdp_origin_init (GstSDPOrigin * origin)
{
FREE_STRING (origin->username);
FREE_STRING (origin->sess_id);
FREE_STRING (origin->sess_version);
FREE_STRING (origin->nettype);
FREE_STRING (origin->addrtype);
FREE_STRING (origin->addr);
}
static void
gst_sdp_connection_init (GstSDPConnection * connection)
{
FREE_STRING (connection->nettype);
FREE_STRING (connection->addrtype);
FREE_STRING (connection->address);
connection->ttl = 0;
connection->addr_number = 0;
}
static void
gst_sdp_bandwidth_init (GstSDPBandwidth * bandwidth)
{
FREE_STRING (bandwidth->bwtype);
bandwidth->bandwidth = 0;
}
static void
gst_sdp_time_init (GstSDPTime * t)
{
FREE_STRING (t->start);
FREE_STRING (t->stop);
INIT_PTR_ARRAY (t->repeat, gchar *, g_free);
FREE_PTR_ARRAY (t->repeat);
}
static void
gst_sdp_zone_init (GstSDPZone * zone)
{
FREE_STRING (zone->time);
FREE_STRING (zone->typed_time);
}
static void
gst_sdp_key_init (GstSDPKey * key)
{
FREE_STRING (key->type);
FREE_STRING (key->data);
}
static void
gst_sdp_attribute_init (GstSDPAttribute * attr)
{
FREE_STRING (attr->key);
FREE_STRING (attr->value);
}
/**
* gst_sdp_message_new:
* @msg: pointer to new #GstSDPMessage
*
* Allocate a new GstSDPMessage and store the result in @msg.
*
* Returns: a #GstSDPResult.
*/
GstSDPResult
gst_sdp_message_new (GstSDPMessage ** msg)
{
GstSDPMessage *newmsg;
g_return_val_if_fail (msg != NULL, GST_SDP_EINVAL);
newmsg = g_new0 (GstSDPMessage, 1);
*msg = newmsg;
return gst_sdp_message_init (newmsg);
}
/**
* gst_sdp_message_init:
* @msg: a #GstSDPMessage
*
* Initialize @msg so that its contents are as if it was freshly allocated
* with gst_sdp_message_new(). This function is mostly used to initialize a message
* allocated on the stack. gst_sdp_message_uninit() undoes this operation.
*
* When this function is invoked on newly allocated data (with malloc or on the
* stack), its contents should be set to 0 before calling this function.
*
* Returns: a #GstSDPResult.
*/
GstSDPResult
gst_sdp_message_init (GstSDPMessage * msg)
{
g_return_val_if_fail (msg != NULL, GST_SDP_EINVAL);
FREE_STRING (msg->version);
gst_sdp_origin_init (&msg->origin);
FREE_STRING (msg->session_name);
FREE_STRING (msg->information);
FREE_STRING (msg->uri);
INIT_PTR_ARRAY (msg->emails, gchar *, g_free);
INIT_PTR_ARRAY (msg->phones, gchar *, g_free);
gst_sdp_connection_init (&msg->connection);
INIT_ARRAY (msg->bandwidths, GstSDPBandwidth, gst_sdp_bandwidth_init);
INIT_ARRAY (msg->times, GstSDPTime, gst_sdp_time_init);
INIT_ARRAY (msg->zones, GstSDPZone, gst_sdp_zone_init);
gst_sdp_key_init (&msg->key);
INIT_ARRAY (msg->attributes, GstSDPAttribute, gst_sdp_attribute_init);
INIT_ARRAY (msg->medias, GstSDPMedia, gst_sdp_media_uninit);
return GST_SDP_OK;
}
/**
* gst_sdp_message_uninit:
* @msg: a #GstSDPMessage
*
* Free all resources allocated in @msg. @msg should not be used anymore after
* this function. This function should be used when @msg was allocated on the
* stack and initialized with gst_sdp_message_init().
*
* Returns: a #GstSDPResult.
*/
GstSDPResult
gst_sdp_message_uninit (GstSDPMessage * msg)
{
g_return_val_if_fail (msg != NULL, GST_SDP_EINVAL);
gst_sdp_message_init (msg);
FREE_PTR_ARRAY (msg->emails);
FREE_PTR_ARRAY (msg->phones);
FREE_ARRAY (msg->bandwidths);
FREE_ARRAY (msg->times);
FREE_ARRAY (msg->zones);
FREE_ARRAY (msg->attributes);
FREE_ARRAY (msg->medias);
return GST_SDP_OK;
}
/**
* gst_sdp_message_free:
* @msg: a #GstSDPMessage
*
* Free all resources allocated by @msg. @msg should not be used anymore after
* this function. This function should be used when @msg was dynamically
* allocated with gst_sdp_message_new().
*
* Returns: a #GstSDPResult.
*/
GstSDPResult
gst_sdp_message_free (GstSDPMessage * msg)
{
g_return_val_if_fail (msg != NULL, GST_SDP_EINVAL);
gst_sdp_message_uninit (msg);
g_free (msg);
return GST_SDP_OK;
}
static gboolean
is_multicast_address (const gchar * host_name, guint * family)
{
struct addrinfo hints;
struct addrinfo *ai;
struct addrinfo *res;
gboolean ret = FALSE;
int err;
memset (&hints, 0, sizeof (hints));
hints.ai_socktype = SOCK_DGRAM;
g_return_val_if_fail (host_name, FALSE);
if ((err = getaddrinfo (host_name, NULL, &hints, &res)) < 0)
return FALSE;
for (ai = res; !ret && ai; ai = ai->ai_next) {
if (ai->ai_family == AF_INET)
ret =
IN_MULTICAST (ntohl (((struct sockaddr_in *) ai->ai_addr)->sin_addr.
s_addr));
else
ret =
IN6_IS_ADDR_MULTICAST (&((struct sockaddr_in6 *) ai->ai_addr)->
sin6_addr);
if (ret && family)
*family = ai->ai_family;
}
freeaddrinfo (res);
return ret;
}
/**
* gst_sdp_message_as_text:
* @msg: a #GstSDPMessage
*
* Convert the contents of @msg to a text string.
*
* Returns: A dynamically allocated string representing the SDP description.
*/
gchar *
gst_sdp_message_as_text (const GstSDPMessage * msg)
{
/* change all vars so they match rfc? */
GString *lines;
guint i;
g_return_val_if_fail (msg != NULL, NULL);
lines = g_string_new ("");
if (msg->version)
g_string_append_printf (lines, "v=%s\r\n", msg->version);
if (msg->origin.sess_id && msg->origin.sess_version && msg->origin.nettype &&
msg->origin.addrtype && msg->origin.addr)
g_string_append_printf (lines, "o=%s %s %s %s %s %s\r\n",
msg->origin.username ? msg->origin.username : "-", msg->origin.sess_id,
msg->origin.sess_version, msg->origin.nettype, msg->origin.addrtype,
msg->origin.addr);
if (msg->session_name)
g_string_append_printf (lines, "s=%s\r\n", msg->session_name);
if (msg->information)
g_string_append_printf (lines, "i=%s\r\n", msg->information);
if (msg->uri)
g_string_append_printf (lines, "u=%s\r\n", msg->uri);
for (i = 0; i < gst_sdp_message_emails_len (msg); i++)
g_string_append_printf (lines, "e=%s\r\n",
gst_sdp_message_get_email (msg, i));
for (i = 0; i < gst_sdp_message_phones_len (msg); i++)
g_string_append_printf (lines, "p=%s\r\n",
gst_sdp_message_get_phone (msg, i));
if (gst_sdp_message_emails_len (msg) == 0 &&
gst_sdp_message_phones_len (msg) == 0)
g_string_append_printf (lines, "e=NONE\r\n");
if (msg->connection.nettype && msg->connection.addrtype &&
msg->connection.address) {
guint family;
g_string_append_printf (lines, "c=%s %s %s", msg->connection.nettype,
msg->connection.addrtype, msg->connection.address);
if (is_multicast_address (msg->connection.address, &family)) {
if (family == AF_INET)
g_string_append_printf (lines, "/%u", msg->connection.ttl);
if (msg->connection.addr_number > 1)
g_string_append_printf (lines, "/%u", msg->connection.addr_number);
}
g_string_append_printf (lines, "\r\n");
}
for (i = 0; i < gst_sdp_message_bandwidths_len (msg); i++) {
const GstSDPBandwidth *bandwidth = gst_sdp_message_get_bandwidth (msg, i);
g_string_append_printf (lines, "b=%s:%u\r\n", bandwidth->bwtype,
bandwidth->bandwidth);
}
for (i = 0; i < gst_sdp_message_times_len (msg); i++) {
const GstSDPTime *times = gst_sdp_message_get_time (msg, i);
g_string_append_printf (lines, "t=%s %s\r\n", times->start, times->stop);
if (times->repeat != NULL) {
guint j;
g_string_append_printf (lines, "r=%s",
g_array_index (times->repeat, gchar *, 0));
for (j = 1; j < times->repeat->len; j++)
g_string_append_printf (lines, " %s",
g_array_index (times->repeat, gchar *, j));
g_string_append_printf (lines, "\r\n");
}
}
if (gst_sdp_message_zones_len (msg) > 0) {
const GstSDPZone *zone = gst_sdp_message_get_zone (msg, 0);
g_string_append_printf (lines, "z=%s %s", zone->time, zone->typed_time);
for (i = 1; i < gst_sdp_message_zones_len (msg); i++) {
zone = gst_sdp_message_get_zone (msg, i);
g_string_append_printf (lines, " %s %s", zone->time, zone->typed_time);
}
g_string_append_printf (lines, "\r\n");
}
if (msg->key.type) {
g_string_append_printf (lines, "k=%s", msg->key.type);
if (msg->key.data)
g_string_append_printf (lines, ":%s", msg->key.data);
g_string_append_printf (lines, "\r\n");
}
for (i = 0; i < gst_sdp_message_attributes_len (msg); i++) {
const GstSDPAttribute *attr = gst_sdp_message_get_attribute (msg, i);
if (attr->key) {
g_string_append_printf (lines, "a=%s", attr->key);
if (attr->value)
g_string_append_printf (lines, ":%s", attr->value);
g_string_append_printf (lines, "\r\n");
}
}
for (i = 0; i < gst_sdp_message_medias_len (msg); i++) {
const GstSDPMedia *media = gst_sdp_message_get_media (msg, i);
gchar *sdp_media_str;
sdp_media_str = gst_sdp_media_as_text (media);
g_string_append_printf (lines, "%s", sdp_media_str);
g_free (sdp_media_str);
}
return g_string_free (lines, FALSE);
}
/**
* gst_sdp_message_set_version:
* @msg: a #GstSDPMessage
* @version: the version
*
* Set the version in @msg.
*
* Returns: a #GstSDPResult.
*/
DEFINE_STRING_SETTER (version);
/**
* gst_sdp_message_get_version:
* @msg: a #GstSDPMessage
*
* Get the version in @msg.
*
* Returns: a #GstSDPResult.
*/
DEFINE_STRING_GETTER (version);
/**
* gst_sdp_message_set_origin:
* @msg: a #GstSDPMessage
* @username: the user name
* @sess_id: a session id
* @sess_version: a session version
* @nettype: a network type
* @addrtype: an address type
* @addr: an address
*
* Configure the SDP origin in @msg with the given parameters.
*
* Returns: #GST_SDP_OK.
*/
GstSDPResult
gst_sdp_message_set_origin (GstSDPMessage * msg, const gchar * username,
const gchar * sess_id, const gchar * sess_version, const gchar * nettype,
const gchar * addrtype, const gchar * addr)
{
REPLACE_STRING (msg->origin.username, username);
REPLACE_STRING (msg->origin.sess_id, sess_id);
REPLACE_STRING (msg->origin.sess_version, sess_version);
REPLACE_STRING (msg->origin.nettype, nettype);
REPLACE_STRING (msg->origin.addrtype, addrtype);
REPLACE_STRING (msg->origin.addr, addr);
return GST_SDP_OK;
}
/**
* gst_sdp_message_get_origin:
* @msg: a #GstSDPMessage
*
* Get the origin of @msg.
*
* Returns: a #GstSDPOrigin. The result remains valid as long as @msg is valid.
*/
const GstSDPOrigin *
gst_sdp_message_get_origin (const GstSDPMessage * msg)
{
return &msg->origin;
}
/**
* gst_sdp_message_set_session_name:
* @msg: a #GstSDPMessage
* @session_name: the session name
*
* Set the session name in @msg.
*
* Returns: a #GstSDPResult.
*/
DEFINE_STRING_SETTER (session_name);
/**
* gst_sdp_message_get_session_name:
* @msg: a #GstSDPMessage
*
* Get the session name in @msg.
*
* Returns: a #GstSDPResult.
*/
DEFINE_STRING_GETTER (session_name);
/**
* gst_sdp_message_set_information:
* @msg: a #GstSDPMessage
* @information: the information
*
* Set the information in @msg.
*
* Returns: a #GstSDPResult.
*/
DEFINE_STRING_SETTER (information);
/**
* gst_sdp_message_get_information:
* @msg: a #GstSDPMessage
*
* Get the information in @msg.
*
* Returns: a #GstSDPResult.
*/
DEFINE_STRING_GETTER (information);
/**
* gst_sdp_message_set_uri:
* @msg: a #GstSDPMessage
* @uri: the URI
*
* Set the URI in @msg.
*
* Returns: a #GstSDPResult.
*/
DEFINE_STRING_SETTER (uri);
/**
* gst_sdp_message_get_uri:
* @msg: a #GstSDPMessage
*
* Get the URI in @msg.
*
* Returns: a #GstSDPResult.
*/
DEFINE_STRING_GETTER (uri);
/**
* gst_sdp_message_emails_len:
* @msg: a #GstSDPMessage
*
* Get the number of emails in @msg.
*
* Returns: the number of emails in @msg.
*/
DEFINE_ARRAY_LEN (emails);
/**
* gst_sdp_message_get_email:
* @msg: a #GstSDPMessage
* @idx: an email index
*
* Get the email with number @idx from @msg.
*
* Returns: the email at position @idx.
*/
DEFINE_PTR_ARRAY_GETTER (email, emails, const gchar *);
/**
* gst_sdp_message_add_email:
* @msg: a #GstSDPMessage
* @email: an email
*
* Add @email to the list of emails in @msg.
*
* Returns: a #GstSDPResult.
*/
DEFINE_PTR_ARRAY_ADDER (email, emails, const gchar *, g_strdup);
/**
* gst_sdp_message_phones_len:
* @msg: a #GstSDPMessage
*
* Get the number of phones in @msg.
*
* Returns: the number of phones in @msg.
*/
DEFINE_ARRAY_LEN (phones);
/**
* gst_sdp_message_get_phone:
* @msg: a #GstSDPMessage
* @idx: a phone index
*
* Get the phone with number @idx from @msg.
*
* Returns: the phone at position @idx.
*/
DEFINE_PTR_ARRAY_GETTER (phone, phones, const gchar *);
/**
* gst_sdp_message_add_phone:
* @msg: a #GstSDPMessage
* @phone: a phone
*
* Add @phone to the list of phones in @msg.
*
* Returns: a #GstSDPResult.
*/
DEFINE_PTR_ARRAY_ADDER (phone, phones, const gchar *, g_strdup);
/**
* gst_sdp_message_set_connection:
* @msg: a #GstSDPMessage
* @nettype: the type of network. "IN" is defined to have the meaning
* "Internet".
* @addrtype: the type of address.
* @address: the address
* @ttl: the time to live of the address
* @addr_number: the number of layers
*
* Configure the SDP connection in @msg with the given parameters.
*
* Returns: a #GstSDPResult.
*/
GstSDPResult
gst_sdp_message_set_connection (GstSDPMessage * msg, const gchar * nettype,
const gchar * addrtype, const gchar * address, guint ttl, guint addr_number)
{
REPLACE_STRING (msg->connection.nettype, nettype);
REPLACE_STRING (msg->connection.addrtype, addrtype);
REPLACE_STRING (msg->connection.address, address);
msg->connection.ttl = ttl;
msg->connection.addr_number = addr_number;
return GST_SDP_OK;
}
/**
* gst_sdp_message_get_connection:
* @msg: a #GstSDPMessage
*
* Get the connection of @msg.
*
* Returns: a #GstSDPConnection. The result remains valid as long as @msg is valid.
*/
const GstSDPConnection *
gst_sdp_message_get_connection (const GstSDPMessage * msg)
{
return &msg->connection;
}
/**
* gst_sdp_message_bandwidths_len:
* @msg: a #GstSDPMessage
*
* Get the number of bandwidth information in @msg.
*
* Returns: the number of bandwidth information in @msg.
*/
DEFINE_ARRAY_LEN (bandwidths);
/**
* gst_sdp_message_get_bandwidth:
* @msg: a #GstSDPMessage
* @idx: the bandwidth index
*
* Get the bandwidth at index @idx from @msg.
*
* Returns: a #GstSDPBandwidth.
*/
DEFINE_ARRAY_GETTER (bandwidth, bandwidths, const GstSDPBandwidth);
/**
* gst_sdp_message_add_bandwidth:
* @msg: a #GstSDPMessage
* @bwtype: the bandwidth modifier type
* @bandwidth: the bandwidth in kilobits per second
*
* Add the specified bandwidth information to @msg.
*
* Returns: a #GstSDPResult.
*/
GstSDPResult
gst_sdp_message_add_bandwidth (GstSDPMessage * msg, const gchar * bwtype,
guint bandwidth)
{
GstSDPBandwidth bw;
bw.bwtype = g_strdup (bwtype);
bw.bandwidth = bandwidth;
g_array_append_val (msg->bandwidths, bw);
return GST_SDP_OK;
}
/**
* gst_sdp_message_times_len:
* @msg: a #GstSDPMessage
*
* Get the number of time information entries in @msg.
*
* Returns: the number of time information entries in @msg.
*/
DEFINE_ARRAY_LEN (times);
/**
* gst_sdp_message_get_time:
* @msg: a #GstSDPMessage
* @idx: the time index
*
* Get time information with index @idx from @msg.
*
* Returns: a #GstSDPTime.
*/
DEFINE_ARRAY_GETTER (time, times, const GstSDPTime);
/**
* gst_sdp_message_add_time:
* @msg: a #GstSDPMessage
* @start: the start time
* @stop: the stop time
* @repeat: the repeat times
*
* Add time information @start and @stop to @msg.
*
* Returns: a #GstSDPResult.
*/
GstSDPResult
gst_sdp_message_add_time (GstSDPMessage * msg, const gchar * start,
const gchar * stop, const gchar ** repeat)
{
GstSDPTime times;
times.start = g_strdup (start);
times.stop = g_strdup (stop);
if (repeat) {
times.repeat = g_array_new (FALSE, TRUE, sizeof (gchar *));
for (; *repeat; repeat++) {
gchar *r = g_strdup (*repeat);
g_array_append_val (times.repeat, r);
}
} else
times.repeat = NULL;
g_array_append_val (msg->times, times);
return GST_SDP_OK;
}
/**
* gst_sdp_message_zones_len:
* @msg: a #GstSDPMessage
*
* Get the number of time zone information entries in @msg.
*
* Returns: the number of time zone information entries in @msg.
*/
DEFINE_ARRAY_LEN (zones);
/**
* gst_sdp_message_get_zone:
* @msg: a #GstSDPMessage
* @idx: the zone index
*
* Get time zone information with index @idx from @msg.
*
* Returns: a #GstSDPZone.
*/
DEFINE_ARRAY_GETTER (zone, zones, const GstSDPZone);
/**
* gst_sdp_message_add_zone:
* @msg: a #GstSDPMessage
* @adj_time: the NTP time that a time zone adjustment happens
* @typed_time: the offset from the time when the session was first scheduled
*
* Add time zone information to @msg.
*
* Returns: a #GstSDPResult.
*/
GstSDPResult
gst_sdp_message_add_zone (GstSDPMessage * msg, const gchar * adj_time,
const gchar * typed_time)
{
GstSDPZone zone;
zone.time = g_strdup (adj_time);
zone.typed_time = g_strdup (typed_time);
g_array_append_val (msg->zones, zone);
return GST_SDP_OK;
}
/**
* gst_sdp_message_set_key:
* @msg: a #GstSDPMessage
* @type: the encryption type
* @data: the encryption data
*
* Adds the encryption information to @msg.
*
* Returns: a #GstSDPResult.
*/
GstSDPResult
gst_sdp_message_set_key (GstSDPMessage * msg, const gchar * type,
const gchar * data)
{
REPLACE_STRING (msg->key.type, type);
REPLACE_STRING (msg->key.data, data);
return GST_SDP_OK;
}
/**
* gst_sdp_message_get_key:
* @msg: a #GstSDPMessage
*
* Get the encryption information from @msg.
*
* Returns: a #GstSDPKey.
*/
const GstSDPKey *
gst_sdp_message_get_key (const GstSDPMessage * msg)
{
return &msg->key;
}
/**
* gst_sdp_message_attributes_len:
* @msg: a #GstSDPMessage
*
* Get the number of attributes in @msg.
*
* Returns: the number of attributes in @msg.
*/
DEFINE_ARRAY_LEN (attributes);
/**
* gst_sdp_message_get_attribute:
* @msg: a #GstSDPMessage
* @idx: the index
*
* Get the attribute at position @idx in @msg.
*
* Returns: the #GstSDPAttribute at position @idx.
*/
DEFINE_ARRAY_GETTER (attribute, attributes, const GstSDPAttribute);
/**
* gst_sdp_message_get_attribute_val_n:
* @msg: a #GstSDPMessage
* @key: the key
* @nth: the index
*
* Get the @nth attribute with key @key in @msg.
*
* Returns: the attribute value of the @nth attribute with @key.
*/
const gchar *
gst_sdp_message_get_attribute_val_n (const GstSDPMessage * msg,
const gchar * key, guint nth)
{
guint i;
for (i = 0; i < msg->attributes->len; i++) {
GstSDPAttribute *attr;
attr = &g_array_index (msg->attributes, GstSDPAttribute, i);
if (!strcmp (attr->key, key)) {
if (nth == 0)
return attr->value;
else
nth--;
}
}
return NULL;
}
/**
* gst_sdp_message_get_attribute_val:
* @msg: a #GstSDPMessage
* @key: the key
*
* Get the first attribute with key @key in @msg.
*
* Returns: the attribute value of the first attribute with @key.
*/
const gchar *
gst_sdp_message_get_attribute_val (const GstSDPMessage * msg, const gchar * key)
{
return gst_sdp_message_get_attribute_val_n (msg, key, 0);
}
/**
* gst_sdp_message_add_attribute:
* @msg: a #GstSDPMessage
* @key: the key
* @value: the value
*
* Add the attribute with @key and @value to @msg.
*
* Returns: @GST_SDP_OK.
*/
GstSDPResult
gst_sdp_message_add_attribute (GstSDPMessage * msg, const gchar * key,
const gchar * value)
{
GstSDPAttribute attr;
attr.key = g_strdup (key);
attr.value = g_strdup (value);
g_array_append_val (msg->attributes, attr);
return GST_SDP_OK;
}
/**
* gst_sdp_message_medias_len:
* @msg: a #GstSDPMessage
*
* Get the number of media descriptions in @msg.
*
* Returns: the number of media descriptions in @msg.
*/
DEFINE_ARRAY_LEN (medias);
/**
* gst_sdp_message_get_media:
* @msg: a #GstSDPMessage
* @idx: the index
*
* Get the media description at index @idx in @msg.
*
* Returns: a #GstSDPMedia.
*/
DEFINE_ARRAY_GETTER (media, medias, const GstSDPMedia);
/**
* gst_sdp_message_add_media:
* @msg: a #GstSDPMessage
* @media: a #GstSDPMedia to add
*
* Adds @media to the array of medias in @msg. This function takes ownership of
* the contents of @media so that @media will have to be reinitialized with
* gst_media_init() before it can be used again.
*
* Returns: a #GstSDPResult.
*/
GstSDPResult
gst_sdp_message_add_media (GstSDPMessage * msg, GstSDPMedia * media)
{
guint len;
GstSDPMedia *nmedia;
len = msg->medias->len;
g_array_set_size (msg->medias, len + 1);
nmedia = &g_array_index (msg->medias, GstSDPMedia, len);
memcpy (nmedia, media, sizeof (GstSDPMedia));
memset (media, 0, sizeof (GstSDPMedia));
return GST_SDP_OK;
}
/* media access */
/**
* gst_sdp_media_new:
* @media: pointer to new #GstSDPMedia
*
* Allocate a new GstSDPMedia and store the result in @media.
*
* Returns: a #GstSDPResult.
*/
GstSDPResult
gst_sdp_media_new (GstSDPMedia ** media)
{
GstSDPMedia *newmedia;
g_return_val_if_fail (media != NULL, GST_SDP_EINVAL);
newmedia = g_new0 (GstSDPMedia, 1);
*media = newmedia;
return gst_sdp_media_init (newmedia);
}
/**
* gst_sdp_media_init:
* @media: a #GstSDPMedia
*
* Initialize @media so that its contents are as if it was freshly allocated
* with gst_sdp_media_new(). This function is mostly used to initialize a media
* allocated on the stack. gst_sdp_media_uninit() undoes this operation.
*
* When this function is invoked on newly allocated data (with malloc or on the
* stack), its contents should be set to 0 before calling this function.
*
* Returns: a #GstSDPResult.
*/
GstSDPResult
gst_sdp_media_init (GstSDPMedia * media)
{
g_return_val_if_fail (media != NULL, GST_SDP_EINVAL);
FREE_STRING (media->media);
media->port = 0;
media->num_ports = 0;
FREE_STRING (media->proto);
INIT_PTR_ARRAY (media->fmts, gchar *, g_free);
FREE_STRING (media->information);
INIT_ARRAY (media->connections, GstSDPConnection, gst_sdp_connection_init);
INIT_ARRAY (media->bandwidths, GstSDPBandwidth, gst_sdp_bandwidth_init);
gst_sdp_key_init (&media->key);
INIT_ARRAY (media->attributes, GstSDPAttribute, gst_sdp_attribute_init);
return GST_SDP_OK;
}
/**
* gst_sdp_media_uninit:
* @media: a #GstSDPMedia
*
* Free all resources allocated in @media. @media should not be used anymore after
* this function. This function should be used when @media was allocated on the
* stack and initialized with gst_sdp_media_init().
*
* Returns: a #GstSDPResult.
*/
GstSDPResult
gst_sdp_media_uninit (GstSDPMedia * media)
{
g_return_val_if_fail (media != NULL, GST_SDP_EINVAL);
gst_sdp_media_init (media);
FREE_PTR_ARRAY (media->fmts);
FREE_ARRAY (media->connections);
FREE_ARRAY (media->bandwidths);
FREE_ARRAY (media->attributes);
return GST_SDP_OK;
}
/**
* gst_sdp_media_free:
* @media: a #GstSDPMedia
*
* Free all resources allocated by @media. @media should not be used anymore after
* this function. This function should be used when @media was dynamically
* allocated with gst_sdp_media_new().
*
* Returns: a #GstSDPResult.
*/
GstSDPResult
gst_sdp_media_free (GstSDPMedia * media)
{
g_return_val_if_fail (media != NULL, GST_SDP_EINVAL);
gst_sdp_media_uninit (media);
g_free (media);
return GST_SDP_OK;
}
/**
* gst_sdp_media_as_text:
* @media: a #GstSDPMedia
*
* Convert the contents of @media to a text string.
*
* Returns: A dynamically allocated string representing the media.
*/
gchar *
gst_sdp_media_as_text (const GstSDPMedia * media)
{
GString *lines;
guint i;
g_return_val_if_fail (media != NULL, NULL);
lines = g_string_new ("");
if (media->media)
g_string_append_printf (lines, "m=%s", media->media);
g_string_append_printf (lines, " %u", media->port);
if (media->num_ports > 1)
g_string_append_printf (lines, "/%u", media->num_ports);
g_string_append_printf (lines, " %s", media->proto);
for (i = 0; i < gst_sdp_media_formats_len (media); i++)
g_string_append_printf (lines, " %s", gst_sdp_media_get_format (media, i));
g_string_append_printf (lines, "\r\n");
if (media->information)
g_string_append_printf (lines, "i=%s", media->information);
for (i = 0; i < gst_sdp_media_connections_len (media); i++) {
const GstSDPConnection *conn = gst_sdp_media_get_connection (media, i);
if (conn->nettype && conn->addrtype && conn->address) {
guint family;
g_string_append_printf (lines, "c=%s %s %s", conn->nettype,
conn->addrtype, conn->address);
if (is_multicast_address (conn->address, &family)) {
if (family == AF_INET)
g_string_append_printf (lines, "/%u", conn->ttl);
if (conn->addr_number > 1)
g_string_append_printf (lines, "/%u", conn->addr_number);
}
g_string_append_printf (lines, "\r\n");
}
}
for (i = 0; i < gst_sdp_media_bandwidths_len (media); i++) {
const GstSDPBandwidth *bandwidth = gst_sdp_media_get_bandwidth (media, i);
g_string_append_printf (lines, "b=%s:%u\r\n", bandwidth->bwtype,
bandwidth->bandwidth);
}
if (media->key.type) {
g_string_append_printf (lines, "k=%s", media->key.type);
if (media->key.data)
g_string_append_printf (lines, ":%s", media->key.data);
g_string_append_printf (lines, "\r\n");
}
for (i = 0; i < gst_sdp_media_attributes_len (media); i++) {
const GstSDPAttribute *attr = gst_sdp_media_get_attribute (media, i);
if (attr->key) {
g_string_append_printf (lines, "a=%s", attr->key);
if (attr->value)
g_string_append_printf (lines, ":%s", attr->value);
g_string_append_printf (lines, "\r\n");
}
}
return g_string_free (lines, FALSE);
}
/**
* gst_sdp_media_get_media:
* @media: a #GstSDPMedia
*
* Get the media description of @media.
*
* Returns: the media description.
*/
const gchar *
gst_sdp_media_get_media (const GstSDPMedia * media)
{
return media->media;
}
/**
* gst_sdp_media_set_media:
* @media: a #GstSDPMedia
* @med: the media description
*
* Set the media description of @media to @med.
*
* Returns: #GST_SDP_OK.
*/
GstSDPResult
gst_sdp_media_set_media (GstSDPMedia * media, const gchar * med)
{
g_free (media->media);
media->media = g_strdup (med);
return GST_SDP_OK;
}
/**
* gst_sdp_media_get_port:
* @media: a #GstSDPMedia
*
* Get the port number for @media.
*
* Returns: the port number of @media.
*/
guint
gst_sdp_media_get_port (const GstSDPMedia * media)
{
return media->port;
}
/**
* gst_sdp_media_get_num_ports:
* @media: a #GstSDPMedia
*
* Get the number of ports for @media.
*
* Returns: the number of ports for @media.
*/
guint
gst_sdp_media_get_num_ports (const GstSDPMedia * media)
{
return media->num_ports;
}
/**
* gst_sdp_media_set_port_info:
* @media: a #GstSDPMedia
* @port: the port number
* @num_ports: the number of ports
*
* Set the port information in @media.
*
* Returns: #GST_SDP_OK.
*/
GstSDPResult
gst_sdp_media_set_port_info (GstSDPMedia * media, guint port, guint num_ports)
{
media->port = port;
media->num_ports = num_ports;
return GST_SDP_OK;
}
/**
* gst_sdp_media_get_proto:
* @media: a #GstSDPMedia
*
* Get the transport protocol of @media
*
* Returns: the transport protocol of @media.
*/
const gchar *
gst_sdp_media_get_proto (const GstSDPMedia * media)
{
return media->proto;
}
/**
* gst_sdp_media_set_proto:
* @media: a #GstSDPMedia
* @proto: the media transport protocol
*
* Set the media transport protocol of @media to @proto.
*
* Returns: #GST_SDP_OK.
*/
GstSDPResult
gst_sdp_media_set_proto (GstSDPMedia * media, const gchar * proto)
{
g_free (media->proto);
media->proto = g_strdup (proto);
return GST_SDP_OK;
}
/**
* gst_sdp_media_formats_len:
* @media: a #GstSDPMedia
*
* Get the number of formats in @media.
*
* Returns: the number of formats in @media.
*/
guint
gst_sdp_media_formats_len (const GstSDPMedia * media)
{
return media->fmts->len;
}
/**
* gst_sdp_media_get_format:
* @media: a #GstSDPMedia
* @idx: an index
*
* Get the format information at position @idx in @media.
*
* Returns: the format at position @idx.
*/
const gchar *
gst_sdp_media_get_format (const GstSDPMedia * media, guint idx)
{
if (idx >= media->fmts->len)
return NULL;
return g_array_index (media->fmts, gchar *, idx);
}
/**
* gst_sdp_media_add_format:
* @media: a #GstSDPMedia
* @format: the format
*
* Add the format information to @media.
*
* Returns: #GST_SDP_OK.
*/
GstSDPResult
gst_sdp_media_add_format (GstSDPMedia * media, const gchar * format)
{
gchar *fmt;
fmt = g_strdup (format);
g_array_append_val (media->fmts, fmt);
return GST_SDP_OK;
}
/**
* gst_sdp_media_get_information:
* @media: a #GstSDPMedia
*
* Get the information of @media
*
* Returns: the information of @media.
*/
const gchar *
gst_sdp_media_get_information (const GstSDPMedia * media)
{
return media->information;
}
/**
* gst_sdp_media_set_information:
* @media: a #GstSDPMedia
* @information: the media information
*
* Set the media information of @media to @information.
*
* Returns: #GST_SDP_OK.
*/
GstSDPResult
gst_sdp_media_set_information (GstSDPMedia * media, const gchar * information)
{
g_free (media->information);
media->information = g_strdup (information);
return GST_SDP_OK;
}
/**
* gst_sdp_media_connections_len:
* @media: a #GstSDPMedia
*
* Get the number of connection fields in @media.
*
* Returns: the number of connections in @media.
*/
guint
gst_sdp_media_connections_len (const GstSDPMedia * media)
{
return media->connections->len;
}
/**
* gst_sdp_media_get_connection:
* @media: a #GstSDPMedia
* @idx: an index
*
* Get the connection at position @idx in @media.
*
* Returns: the #GstSDPConnection at position @idx.
*/
const GstSDPConnection *
gst_sdp_media_get_connection (const GstSDPMedia * media, guint idx)
{
return &g_array_index (media->connections, GstSDPConnection, idx);
}
/**
* gst_sdp_media_add_connection:
* @media: a #GstSDPMedia
* @nettype: the type of network. "IN" is defined to have the meaning
* "Internet".
* @addrtype: the type of address.
* @address: the address
* @ttl: the time to live of the address
* @addr_number: the number of layers
*
* Add the given connection parameters to @media.
*
* Returns: a #GstSDPResult.
*/
GstSDPResult
gst_sdp_media_add_connection (GstSDPMedia * media, const gchar * nettype,
const gchar * addrtype, const gchar * address, guint ttl, guint addr_number)
{
GstSDPConnection conn;
conn.nettype = g_strdup (nettype);
conn.addrtype = g_strdup (addrtype);
conn.address = g_strdup (address);
conn.ttl = ttl;
conn.addr_number = addr_number;
g_array_append_val (media->connections, conn);
return GST_SDP_OK;
}
/**
* gst_sdp_media_bandwidths_len:
* @media: a #GstSDPMedia
*
* Get the number of bandwidth fields in @media.
*
* Returns: the number of bandwidths in @media.
*/
guint
gst_sdp_media_bandwidths_len (const GstSDPMedia * media)
{
return media->bandwidths->len;
}
/**
* gst_sdp_media_get_bandwidth:
* @media: a #GstSDPMedia
* @idx: an index
*
* Get the bandwidth at position @idx in @media.
*
* Returns: the #GstSDPBandwidth at position @idx.
*/
const GstSDPBandwidth *
gst_sdp_media_get_bandwidth (const GstSDPMedia * media, guint idx)
{
return &g_array_index (media->bandwidths, GstSDPBandwidth, idx);
}
/**
* gst_sdp_media_add_bandwidth:
* @media: a #GstSDPMedia
* @bwtype: the bandwidth modifier type
* @bandwidth: the bandwidth in kilobits per second
*
* Add the bandwidth information with @bwtype and @bandwidth to @media.
*
* Returns: #GST_SDP_OK.
*/
GstSDPResult
gst_sdp_media_add_bandwidth (GstSDPMedia * media, const gchar * bwtype,
guint bandwidth)
{
GstSDPBandwidth bw;
bw.bwtype = g_strdup (bwtype);
bw.bandwidth = bandwidth;
g_array_append_val (media->bandwidths, bw);
return GST_SDP_OK;
}
/**
* gst_sdp_media_set_key:
* @media: a #GstSDPMedia
* @type: the encryption type
* @data: the encryption data
*
* Adds the encryption information to @media.
*
* Returns: a #GstSDPResult.
*/
GstSDPResult
gst_sdp_media_set_key (GstSDPMedia * media, const gchar * type,
const gchar * data)
{
g_free (media->key.type);
media->key.type = g_strdup (type);
g_free (media->key.data);
media->key.data = g_strdup (data);
return GST_SDP_OK;
}
/**
* gst_sdp_media_get_key:
* @media: a #GstSDPMedia
*
* Get the encryption information from @media.
*
* Returns: a #GstSDPKey.
*/
const GstSDPKey *
gst_sdp_media_get_key (const GstSDPMedia * media)
{
return &media->key;
}
/**
* gst_sdp_media_attributes_len:
* @media: a #GstSDPMedia
*
* Get the number of attribute fields in @media.
*
* Returns: the number of attributes in @media.
*/
guint
gst_sdp_media_attributes_len (const GstSDPMedia * media)
{
return media->attributes->len;
}
/**
* gst_sdp_media_add_attribute:
* @media: a #GstSDPMedia
* @key: a key
* @value: a value
*
* Add the attribute with @key and @value to @media.
*
* Returns: #GST_SDP_OK.
*/
GstSDPResult
gst_sdp_media_add_attribute (GstSDPMedia * media, const gchar * key,
const gchar * value)
{
GstSDPAttribute attr;
attr.key = g_strdup (key);
attr.value = g_strdup (value);
g_array_append_val (media->attributes, attr);
return GST_SDP_OK;
}
/**
* gst_sdp_media_get_attribute:
* @media: a #GstSDPMedia
* @idx: an index
*
* Get the attribute at position @idx in @media.
*
* Returns: the #GstSDPAttribute at position @idx.
*/
const GstSDPAttribute *
gst_sdp_media_get_attribute (const GstSDPMedia * media, guint idx)
{
return &g_array_index (media->attributes, GstSDPAttribute, idx);
}
/**
* gst_sdp_media_get_attribute_val_n:
* @media: a #GstSDPMedia
* @key: a key
* @nth: an index
*
* Get the @nth attribute value for @key in @media.
*
* Returns: the @nth attribute value.
*/
const gchar *
gst_sdp_media_get_attribute_val_n (const GstSDPMedia * media, const gchar * key,
guint nth)
{
guint i;
for (i = 0; i < media->attributes->len; i++) {
GstSDPAttribute *attr;
attr = &g_array_index (media->attributes, GstSDPAttribute, i);
if (!strcmp (attr->key, key)) {
if (nth == 0)
return attr->value;
else
nth--;
}
}
return NULL;
}
/**
* gst_sdp_media_get_attribute_val:
* @media: a #GstSDPMedia
* @key: a key
*
* Get the first attribute value for @key in @media.
*
* Returns: the first attribute value for @key.
*/
const gchar *
gst_sdp_media_get_attribute_val (const GstSDPMedia * media, const gchar * key)
{
return gst_sdp_media_get_attribute_val_n (media, key, 0);
}
static void
read_string (gchar * dest, guint size, gchar ** src)
{
guint idx;
idx = 0;
/* skip spaces */
while (g_ascii_isspace (**src))
(*src)++;
while (!g_ascii_isspace (**src) && **src != '\0') {
if (idx < size - 1)
dest[idx++] = **src;
(*src)++;
}
if (size > 0)
dest[idx] = '\0';
}
static void
read_string_del (gchar * dest, guint size, gchar del, gchar ** src)
{
guint idx;
idx = 0;
/* skip spaces */
while (g_ascii_isspace (**src))
(*src)++;
while (**src != del && **src != '\0') {
if (idx < size - 1)
dest[idx++] = **src;
(*src)++;
}
if (size > 0)
dest[idx] = '\0';
}
enum
{
SDP_SESSION,
SDP_MEDIA,
};
typedef struct
{
guint state;
GstSDPMessage *msg;
GstSDPMedia *media;
} SDPContext;
static gboolean
gst_sdp_parse_line (SDPContext * c, gchar type, gchar * buffer)
{
gchar str[8192];
gchar *p = buffer;
#define READ_STRING(field) read_string (str, sizeof (str), &p); REPLACE_STRING (field, str)
#define READ_UINT(field) read_string (str, sizeof (str), &p); field = strtoul (str, NULL, 10)
switch (type) {
case 'v':
if (buffer[0] != '0')
g_warning ("wrong SDP version");
gst_sdp_message_set_version (c->msg, buffer);
break;
case 'o':
READ_STRING (c->msg->origin.username);
READ_STRING (c->msg->origin.sess_id);
READ_STRING (c->msg->origin.sess_version);
READ_STRING (c->msg->origin.nettype);
READ_STRING (c->msg->origin.addrtype);
READ_STRING (c->msg->origin.addr);
break;
case 's':
REPLACE_STRING (c->msg->session_name, buffer);
break;
case 'i':
if (c->state == SDP_SESSION) {
REPLACE_STRING (c->msg->information, buffer);
} else {
REPLACE_STRING (c->media->information, buffer);
}
break;
case 'u':
REPLACE_STRING (c->msg->uri, buffer);
break;
case 'e':
gst_sdp_message_add_email (c->msg, buffer);
break;
case 'p':
gst_sdp_message_add_phone (c->msg, buffer);
break;
case 'c':
READ_STRING (c->msg->connection.nettype);
READ_STRING (c->msg->connection.addrtype);
READ_STRING (c->msg->connection.address);
READ_UINT (c->msg->connection.ttl);
READ_UINT (c->msg->connection.addr_number);
break;
case 'b':
{
gchar str2[MAX_LINE_LEN];
read_string_del (str, sizeof (str), ':', &p);
read_string (str2, sizeof (str2), &p);
if (c->state == SDP_SESSION)
gst_sdp_message_add_bandwidth (c->msg, str, atoi (str2));
else
gst_sdp_media_add_bandwidth (c->media, str, atoi (str2));
break;
}
case 't':
break;
case 'k':
break;
case 'a':
read_string_del (str, sizeof (str), ':', &p);
if (*p != '\0')
p++;
if (c->state == SDP_SESSION)
gst_sdp_message_add_attribute (c->msg, str, p);
else
gst_sdp_media_add_attribute (c->media, str, p);
break;
case 'm':
{
gchar *slash;
GstSDPMedia nmedia;
c->state = SDP_MEDIA;
memset (&nmedia, 0, sizeof (nmedia));
gst_sdp_media_init (&nmedia);
/* m=<media> <port>/<number of ports> <proto> <fmt> ... */
READ_STRING (nmedia.media);
read_string (str, sizeof (str), &p);
slash = g_strrstr (str, "/");
if (slash) {
*slash = '\0';
nmedia.port = atoi (str);
nmedia.num_ports = atoi (slash + 1);
} else {
nmedia.port = atoi (str);
nmedia.num_ports = -1;
}
READ_STRING (nmedia.proto);
do {
read_string (str, sizeof (str), &p);
gst_sdp_media_add_format (&nmedia, str);
} while (*p != '\0');
gst_sdp_message_add_media (c->msg, &nmedia);
c->media =
&g_array_index (c->msg->medias, GstSDPMedia, c->msg->medias->len - 1);
break;
}
default:
break;
}
return TRUE;
}
/**
* gst_sdp_message_parse_buffer:
* @data: the start of the buffer
* @size: the size of the buffer
* @msg: the result #GstSDPMessage
*
* Parse the contents of @size bytes pointed to by @data and store the result in
* @msg.
*
* Returns: #GST_SDP_OK on success.
*/
GstSDPResult
gst_sdp_message_parse_buffer (const guint8 * data, guint size,
GstSDPMessage * msg)
{
gchar *p;
SDPContext c;
gchar type;
gchar buffer[MAX_LINE_LEN];
guint idx = 0;
g_return_val_if_fail (msg != NULL, GST_SDP_EINVAL);
g_return_val_if_fail (data != NULL, GST_SDP_EINVAL);
g_return_val_if_fail (size != 0, GST_SDP_EINVAL);
c.state = SDP_SESSION;
c.msg = msg;
c.media = NULL;
p = (gchar *) data;
while (TRUE) {
while (g_ascii_isspace (*p))
p++;
type = *p++;
if (type == '\0')
break;
if (*p != '=')
goto line_done;
p++;
idx = 0;
while (*p != '\n' && *p != '\r' && *p != '\0') {
if (idx < sizeof (buffer) - 1)
buffer[idx++] = *p;
p++;
}
buffer[idx] = '\0';
gst_sdp_parse_line (&c, type, buffer);
line_done:
while (*p != '\n' && *p != '\0')
p++;
if (*p == '\n')
p++;
}
return GST_SDP_OK;
}
static void
print_media (GstSDPMedia * media)
{
g_print (" media: '%s'\n", GST_STR_NULL (media->media));
g_print (" port: '%u'\n", media->port);
g_print (" num_ports: '%u'\n", media->num_ports);
g_print (" proto: '%s'\n", GST_STR_NULL (media->proto));
if (media->fmts->len > 0) {
guint i;
g_print (" formats:\n");
for (i = 0; i < media->fmts->len; i++) {
g_print (" format '%s'\n", g_array_index (media->fmts, gchar *, i));
}
}
g_print (" information: '%s'\n", GST_STR_NULL (media->information));
g_print (" key:\n");
g_print (" type: '%s'\n", GST_STR_NULL (media->key.type));
g_print (" data: '%s'\n", GST_STR_NULL (media->key.data));
if (media->attributes->len > 0) {
guint i;
g_print (" attributes:\n");
for (i = 0; i < media->attributes->len; i++) {
GstSDPAttribute *attr =
&g_array_index (media->attributes, GstSDPAttribute, i);
g_print (" attribute '%s' : '%s'\n", attr->key, attr->value);
}
}
}
/**
* gst_sdp_message_dump:
* @msg: a #GstSDPMessage
*
* Dump the parsed contents of @msg to stdout.
*
* Returns: a #GstSDPResult.
*/
GstSDPResult
gst_sdp_message_dump (const GstSDPMessage * msg)
{
g_return_val_if_fail (msg != NULL, GST_SDP_EINVAL);
g_print ("sdp packet %p:\n", msg);
g_print (" version: '%s'\n", GST_STR_NULL (msg->version));
g_print (" origin:\n");
g_print (" username: '%s'\n", GST_STR_NULL (msg->origin.username));
g_print (" sess_id: '%s'\n", GST_STR_NULL (msg->origin.sess_id));
g_print (" sess_version: '%s'\n", GST_STR_NULL (msg->origin.sess_version));
g_print (" nettype: '%s'\n", GST_STR_NULL (msg->origin.nettype));
g_print (" addrtype: '%s'\n", GST_STR_NULL (msg->origin.addrtype));
g_print (" addr: '%s'\n", GST_STR_NULL (msg->origin.addr));
g_print (" session_name: '%s'\n", GST_STR_NULL (msg->session_name));
g_print (" information: '%s'\n", GST_STR_NULL (msg->information));
g_print (" uri: '%s'\n", GST_STR_NULL (msg->uri));
if (msg->emails->len > 0) {
guint i;
g_print (" emails:\n");
for (i = 0; i < msg->emails->len; i++) {
g_print (" email '%s'\n", g_array_index (msg->emails, gchar *, i));
}
}
if (msg->phones->len > 0) {
guint i;
g_print (" phones:\n");
for (i = 0; i < msg->phones->len; i++) {
g_print (" phone '%s'\n", g_array_index (msg->phones, gchar *, i));
}
}
g_print (" connection:\n");
g_print (" nettype: '%s'\n", GST_STR_NULL (msg->connection.nettype));
g_print (" addrtype: '%s'\n", GST_STR_NULL (msg->connection.addrtype));
g_print (" address: '%s'\n", GST_STR_NULL (msg->connection.address));
g_print (" ttl: '%u'\n", msg->connection.ttl);
g_print (" addr_number: '%u'\n", msg->connection.addr_number);
g_print (" key:\n");
g_print (" type: '%s'\n", GST_STR_NULL (msg->key.type));
g_print (" data: '%s'\n", GST_STR_NULL (msg->key.data));
if (msg->attributes->len > 0) {
guint i;
g_print (" attributes:\n");
for (i = 0; i < msg->attributes->len; i++) {
GstSDPAttribute *attr =
&g_array_index (msg->attributes, GstSDPAttribute, i);
g_print (" attribute '%s' : '%s'\n", attr->key, attr->value);
}
}
if (msg->medias->len > 0) {
guint i;
g_print (" medias:\n");
for (i = 0; i < msg->medias->len; i++) {
g_print (" media %u:\n", i);
print_media (&g_array_index (msg->medias, GstSDPMedia, i));
}
}
return GST_SDP_OK;
}
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