/**
* \brief creates SAP message: header + payload returned in a buffer
* \param channelTable_entry * entry the entry in the channelTable associated to the socket
* \param sap_msg_length a location to save the lenght of the SAP message
* \param gboolean deletion specify if we should build the SAP deletion message
* \return char* buffer that contains the SAP message (the UDP payload)
*/
static char* build_SAP_msg(struct channelTable_entry * entry, int *sap_msg_length, gboolean deletion){
GstSDPMessage *msg;
/* create a new SDP message */
if (gst_sdp_message_new(&msg)){
g_critical("Failed to create SDP message\n");
return FALSE;
}
/*
* build the SDP message
*/
create_SDP(msg, entry);
/* extract the randomly generated session_version integer */
const GstSDPOrigin *origin = gst_sdp_message_get_origin (msg);
int session_version = htonl(atoi(origin->sess_version));
/* Build the header */
char header[SAP_header_size];
build_SAP_header(header, session_version, deletion);
/* Build the *payload */
char *payload = g_strdup (gst_sdp_message_as_text(msg));
/* concat header and payload */
int sap_msg_size = SAP_header_size+strlen(payload);
char *sap_msg = (char*) malloc(sap_msg_size*sizeof(char));
memcpy(sap_msg, header, SAP_header_size);
memcpy(sap_msg+SAP_header_size, payload, strlen(payload));
*sap_msg_length = sap_msg_size; // save the length if the message into sap_msg_length
free(payload);
return sap_msg;
}
static gboolean
copy_session_attributes (SdpMessageContext * ctx, const GstSDPMessage * msg,
GError ** error)
{
const GstSDPOrigin *o1;
const gchar *s;
o1 = gst_sdp_message_get_origin (msg);
if (gst_sdp_message_set_origin (ctx->msg, o1->username, o1->sess_id,
o1->sess_version, o1->nettype, o1->addrtype,
o1->addr) != GST_SDP_OK) {
g_set_error_literal (error, KMS_SDP_AGENT_ERROR,
SDP_AGENT_INVALID_PARAMETER, "Can not set origin");
return FALSE;
}
s = gst_sdp_message_get_session_name (msg);
if (gst_sdp_message_set_session_name (ctx->msg, s) != GST_SDP_OK) {
g_set_error_literal (error, KMS_SDP_AGENT_ERROR,
SDP_AGENT_INVALID_PARAMETER, "Can not set session name");
return FALSE;
}
if (!sdp_utils_intersect_session_attributes (msg, intersect_session_attr,
ctx)) {
g_set_error_literal (error, KMS_SDP_AGENT_ERROR,
SDP_AGENT_INVALID_PARAMETER, "Can not interset session attributes");
return FALSE;
}
return TRUE;
}
static gboolean
test_response_sdp (GstRTSPClient * client, GstRTSPMessage * response,
gboolean close, gpointer user_data)
{
guint8 *data;
guint size;
GstSDPMessage *sdp_msg;
const GstSDPMedia *sdp_media;
const GstSDPBandwidth *bw;
gint bandwidth_val = GPOINTER_TO_INT (user_data);
fail_unless (gst_rtsp_message_get_body (response, &data, &size)
== GST_RTSP_OK);
gst_sdp_message_new (&sdp_msg);
fail_unless (gst_sdp_message_parse_buffer (data, size, sdp_msg)
== GST_SDP_OK);
/* session description */
/* v= */
fail_unless (gst_sdp_message_get_version (sdp_msg) != NULL);
/* o= */
fail_unless (gst_sdp_message_get_origin (sdp_msg) != NULL);
/* s= */
fail_unless (gst_sdp_message_get_session_name (sdp_msg) != NULL);
/* t=0 0 */
fail_unless (gst_sdp_message_times_len (sdp_msg) == 0);
/* verify number of medias */
fail_unless (gst_sdp_message_medias_len (sdp_msg) == 1);
/* media description */
sdp_media = gst_sdp_message_get_media (sdp_msg, 0);
fail_unless (sdp_media != NULL);
/* m= */
fail_unless (gst_sdp_media_get_media (sdp_media) != NULL);
/* media bandwidth */
if (bandwidth_val) {
fail_unless (gst_sdp_media_bandwidths_len (sdp_media) == 1);
bw = gst_sdp_media_get_bandwidth (sdp_media, 0);
fail_unless (bw != NULL);
fail_unless (g_strcmp0 (bw->bwtype, "AS") == 0);
fail_unless (bw->bandwidth == bandwidth_val);
} else {
fail_unless (gst_sdp_media_bandwidths_len (sdp_media) == 0);
}
gst_sdp_message_free (sdp_msg);
return TRUE;
}
SdpMessageContext *
kms_sdp_message_context_new_from_sdp (GstSDPMessage * sdp, GError ** error)
{
struct SdpMediaContextData data;
SdpMessageContext *ctx;
const GstSDPOrigin *o;
SdpIPv ipv;
o = gst_sdp_message_get_origin (sdp);
if (g_strcmp0 (o->addrtype, ORIGIN_ATTR_ADDR_TYPE_IP4) == 0) {
ipv = IPV4;
} else if (g_strcmp0 (o->addrtype, ORIGIN_ATTR_ADDR_TYPE_IP4) == 0) {
ipv = IPV6;
} else {
g_set_error (error, KMS_SDP_AGENT_ERROR, SDP_AGENT_INVALID_PARAMETER,
"Invalid IP version '%s'", o->addrtype);
return NULL;
}
ctx = kms_sdp_message_context_new (ipv, o->addr, error);
if (ctx == NULL) {
return NULL;
}
if (!kms_sdp_message_context_parse_groups_from_offer (ctx, sdp, error)) {
goto error;
}
if (!copy_session_attributes (ctx, sdp, error)) {
goto error;
}
data.ctx = ctx;
data.err = error;
if (!sdp_utils_for_each_media (sdp, (GstSDPMediaFunc) add_media_context,
&data)) {
g_set_error_literal (error, KMS_SDP_AGENT_ERROR, SDP_AGENT_UNEXPECTED_ERROR,
"can not create SDP context");
goto error;
}
return ctx;
error:
kms_sdp_message_context_destroy (ctx);
return NULL;
}
