/**
* \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;
}
/*****************************************************************************
* Open:
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
sout_stream_t *p_stream = (sout_stream_t*)p_this;
sout_instance_t *p_sout = p_stream->p_sout;
sout_stream_sys_t *p_sys;
char *psz_mux, *psz_access, *psz_url;
sout_access_out_t *p_access;
int ret = VLC_EGENERIC;
config_ChainParse( p_stream, SOUT_CFG_PREFIX, ppsz_sout_options,
p_stream->p_cfg );
psz_mux = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "mux" );
psz_access = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "access" );
if( !psz_access )
{
if( !strcmp( p_stream->psz_name, "http" ) )
psz_access = strdup("http");
else if (!strcmp (p_stream->psz_name, "udp"))
psz_access = strdup("udp");
else if (!strcmp (p_stream->psz_name, "file"))
psz_access = strdup("file");
}
psz_url = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "dst" );
if (!psz_url)
{
char *psz_bind = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "bind" );
if( psz_bind )
{
char *psz_path = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "path" );
if( psz_path )
{
if( asprintf( &psz_url, "%s/%s", psz_bind, psz_path ) == -1 )
psz_url = NULL;
free(psz_bind);
free( psz_path );
}
else
psz_url = psz_bind;
}
}
p_sys = p_stream->p_sys = malloc( sizeof( sout_stream_sys_t) );
if( !p_sys )
{
ret = VLC_ENOMEM;
goto end;
}
p_sys->p_session = NULL;
if( fixAccessMux( p_stream, &psz_mux, &psz_access, psz_url ) )
goto end;
checkAccessMux( p_stream, psz_access, psz_mux );
p_access = sout_AccessOutNew( p_sout, psz_access, psz_url );
if( p_access == NULL )
{
msg_Err( p_stream, "no suitable sout access module for `%s/%s://%s'",
psz_access, psz_mux, psz_url );
goto end;
}
p_sys->p_mux = sout_MuxNew( p_sout, psz_mux, p_access );
if( !p_sys->p_mux )
{
const char *psz_mux_guess = getMuxFromAlias( psz_mux );
if( psz_mux_guess && strcmp( psz_mux_guess, psz_mux ) )
{
msg_Dbg( p_stream, "Couldn't open mux `%s', trying `%s' instead",
psz_mux, psz_mux_guess );
p_sys->p_mux = sout_MuxNew( p_sout, psz_mux_guess, p_access );
}
if( !p_sys->p_mux )
{
msg_Err( p_stream, "no suitable sout mux module for `%s/%s://%s'",
psz_access, psz_mux, psz_url );
sout_AccessOutDelete( p_access );
goto end;
}
}
if( var_GetBool( p_stream, SOUT_CFG_PREFIX"sap" ) )
create_SDP( p_stream, p_access );
if( !sout_AccessOutCanControlPace( p_access ) )
p_sout->i_out_pace_nocontrol++;
p_stream->pf_add = Add;
p_stream->pf_del = Del;
p_stream->pf_send = Send;
ret = VLC_SUCCESS;
msg_Dbg( p_this, "using `%s/%s://%s'", psz_access, psz_mux, psz_url );
end:
if( ret != VLC_SUCCESS )
free( p_sys );
free( psz_access );
free( psz_mux );
free( psz_url );
return ret;
}
