/*****************************************************************************
* sgimb.c: a meta demux to parse sgimb referrer files
*****************************************************************************
* Copyright (C) 2004 VLC authors and VideoLAN
*
* Authors: Derk-Jan Hartman <hartman at videolan dot org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This program 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* This is a metademux for the Kasenna MediaBase metafile format.
* Kasenna MediaBase first returns this file when you are trying to access
* their MPEG streams (MIME: application/x-sgimb). Very few applications
* understand this format and the format is not really documented on the net.
* Following a typical MediaBase file. Notice the sgi prefix of all the elements.
* This stems from the fact that the MediaBase servers were first introduced by SGI?????.
*
* sgiNameServerHost=host.name.tld
* Obvious: the host hosting this stream
* Stream="xdma://host.name.tld/demo/a_very_cool.mpg"
* Not always present. xdma can be read as RTSP.
* sgiMovieName=/demo/a_very_cool.mpg
* The path to the asset
* sgiAuxState=1|2
* AuxState=2 is always Video On Demand (so not Scheduled)
* Not present with Live streams
* sgiLiveFeed=True|False
* Denounces if the stream is live or from assets (Canned?)
* Live appears as a little satellite dish in the web interface of Kasenna
* sgiFormatName=PARTNER_41_MPEG-4
* The type of stream. One of:
* PARTNER_41_MPEG-4 (RTSP MPEG-4 fully compliant)
* MPEG1-Audio (MP3 Audio streams in MPEG TS)
* MPEG-1 (MPEG 1 A/V in MPEG TS)
* MPEG-2 (MPEG 2 A/V in MPEG TS)
* sgiWidth=720
* The width of the to be received stream. Only present if stream is not Live.
* sgiHeight=576
* The height of the to be received stream. Only present if stream is not Live.
* sgiBitrate=1630208
* The bitrate of the to be received stream. Only present if stream is not Live.
* sgiDuration=378345000
* The duration of the to be received stream. Only present if stream is not Live.
* sgiQTFileBegin
* rtsptext
* rtsp://host.name.tld/demo/a_very_cool.mpg
* sgiQTFileEnd
* Sometimes present. QT will recognize this as a RTSP reference file, if present.
* sgiApplicationName=MediaBaseURL
* Beats me !! :)
* sgiElapsedTime=0
* Time passed since the asset was started (resets for repeating non live assets?)
* sgiMulticastAddress=233.81.233.15
* The multicast IP used for the Multicast feed.
* Also defines if a stream is multicast or not. (blue dot in kasenna web interface)
* sgiMulticastPort=1234
* The multicast port for the same Multicast feed.
* sgiPacketSize=16384
* The packetsize of the UDP frames that Kasenna sends. They should have used a default
* that is a multiple of 188 (TS frame size). Most networks don't support more than 1500 anyways.
* Also, when you lose a frame of this size, imagecorruption is more likely then with smaller
* frames.
* sgiServerVersion=6.1.2
* Version of the server
* sgiRtspPort=554
* TCP port used for RTSP communication
* AutoStart=True
* Start playing automatically
* DeliveryService=cds
* Simulcasted (scheduled unicast) content. (Green dot in Kasenna web interface)
* sgiShowingName=A nice name that everyone likes
* A human-readable descriptive title for this stream.
* sgiSid=2311
* Looks like this is the ID of the scheduled asset?
* sgiUserAccount=pid=1724&time=1078527309&displayText=You%20are%20logged%20as%20guest&
* User Authentication. Above is a default guest entry. Not required for RTSP communication.
* sgiUserPassword=
* Password :)
*
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_access.h>
#include "playlist.h"
/*****************************************************************************
* Local prototypes
*****************************************************************************/
#define MAX_LINE 1024
typedef struct
{
char *psz_uri; /* Stream= or sgiQTFileBegin rtsp link */
char *psz_server; /* sgiNameServerHost= */
char *psz_location; /* sgiMovieName= */
char *psz_name; /* sgiShowingName= */
char *psz_user; /* sgiUserAccount= */
char *psz_password; /* sgiUserPassword= */
char *psz_mcast_ip; /* sgiMulticastAddress= */
int i_mcast_port; /* sgiMulticastPort= */
int i_packet_size; /* sgiPacketSize= */
vlc_tick_t i_duration; /* sgiDuration= */
int i_port; /* sgiRtspPort= */
int i_sid; /* sgiSid= */
bool b_concert; /* DeliveryService=cds */
bool b_rtsp_kasenna; /* kasenna style RTSP */
} demux_sys_t;
static int ReadDir( stream_t *, input_item_node_t * );
/*****************************************************************************
* Activate: initializes m3u demux structures
*****************************************************************************/
int Import_SGIMB( vlc_object_t * p_this )
{
stream_t *p_demux = (stream_t *)p_this;
const uint8_t *p_peek;
int i_size;
/* Lets check the content to see if this is a sgi mediabase file */
i_size = vlc_stream_Peek( p_demux->s, &p_peek, MAX_LINE );
i_size -= sizeof("sgiNameServerHost=") - 1;
if ( i_size > 0 )
{
unsigned int i_len = sizeof("sgiNameServerHost=") - 1;
while ( i_size && strncasecmp( (char *)p_peek, "sgiNameServerHost=", i_len ) )
{
p_peek++;
i_size--;
}
if ( !strncasecmp( (char *)p_peek, "sgiNameServerHost=", i_len ) )
{
demux_sys_t *p_sys = malloc(sizeof (*p_sys));
if( unlikely(p_sys == NULL) )
return VLC_ENOMEM;
msg_Dbg( p_demux, "using SGIMB playlist reader" );
p_demux->pf_readdir = ReadDir;
p_demux->pf_control = PlaylistControl;
p_demux->p_sys = p_sys;
p_sys->psz_uri = NULL;
p_sys->psz_server = NULL;
p_sys->psz_location = NULL;
p_sys->psz_name = NULL;
p_sys->psz_user = NULL;
p_sys->psz_password = NULL;
p_sys->psz_mcast_ip = NULL;
p_sys->i_mcast_port = 0;
p_sys->i_packet_size = 0;
p_sys->i_duration = 0;
p_sys->i_port = 0;
p_sys->i_sid = 0;
p_sys->b_rtsp_kasenna = false;
p_sys->b_concert = false;
return VLC_SUCCESS;
}
}
return VLC_EGENERIC;
}
/*****************************************************************************
* Deactivate: frees unused data
*****************************************************************************/
void Close_SGIMB( vlc_object_t *p_this )
{
stream_t *p_demux = (stream_t*)p_this;
demux_sys_t *p_sys = p_demux->p_sys;
free( p_sys->psz_uri );
free( p_sys->psz_server );
free( p_sys->psz_location );
free( p_sys->psz_name );
free( p_sys->psz_user );
free( p_sys->psz_password );
free( p_sys->psz_mcast_ip );
free( p_demux->p_sys );
return;
}
static int ParseLine ( stream_t *p_demux, char *psz_line )
{
char *psz_bol;
demux_sys_t *p_sys = p_demux->p_sys;
psz_bol = psz_line;
/* Remove unnecessary tabs or spaces at the beginning of line */
while( *psz_bol == ' ' || *psz_bol == '\t' ||
*psz_bol == '\n' || *psz_bol == '\r' )
{
psz_bol++;
}
if( !strncasecmp( psz_bol, "rtsp://", sizeof("rtsp://") - 1 ) )
{
/* We found the link, it was inside a sgiQTFileBegin */
free( p_sys->psz_uri );
p_sys->psz_uri = strdup( psz_bol );
}
else if( !strncasecmp( psz_bol, "Stream=\"", sizeof("Stream=\"") - 1 ) )
{
psz_bol += sizeof("Stream=\"") - 1;
char* psz_tmp = strrchr( psz_bol, '"' );
if( !psz_tmp )
return 0;
psz_tmp[0] = '\0';
/* We cheat around xdma. for some reason xdma links work different then rtsp */
if( !strncasecmp( psz_bol, "xdma://", sizeof("xdma://") - 1 ) )
{
psz_bol[0] = 'r';
psz_bol[1] = 't';
psz_bol[2] = 's';
psz_bol[3] = 'p';
}
free( p_sys->psz_uri );
p_sys->psz_uri = strdup( psz_bol );
}
else if( !strncasecmp( psz_bol, "sgiNameServerHost=", sizeof("sgiNameServerHost=") - 1 ) )
{
psz_bol += sizeof("sgiNameServerHost=") - 1;
free( p_sys->psz_server );
p_sys->psz_server = strdup( psz_bol );
}
else if( !strncasecmp( psz_bol, "sgiMovieName=", sizeof("sgiMovieName=") - 1 ) )
{
psz_bol += sizeof("sgiMovieName=") - 1;
free( p_sys->psz_location );
p_sys->psz_location = strdup( psz_bol );
}
else if( !strncasecmp( psz_bol, "sgiUserAccount=", sizeof("sgiUserAccount=") - 1 ) )
{
psz_bol += sizeof("sgiUserAccount=") - 1;
free( p_sys->psz_user );
p_sys->psz_user = strdup( psz_bol );
}
else if( !strncasecmp( psz_bol, "sgiUserPassword=", sizeof("sgiUserPassword=") - 1 ) )
{
psz_bol += sizeof("sgiUserPassword=") - 1;
free( p_sys->psz_password );
p_sys->psz_password = strdup( psz_bol );
}
else if( !strncasecmp( psz_bol, "sgiShowingName=", sizeof("sgiShowingName=") - 1 ) )
{
psz_bol += sizeof("sgiShowingName=") - 1;
free( p_sys->psz_name );
p_sys->psz_name = strdup( psz_bol );
}
else if( !strncasecmp( psz_bol, "sgiFormatName=", sizeof("sgiFormatName=") - 1 ) )
{
psz_bol += sizeof("sgiFormatName=") - 1;
if( strcasestr( psz_bol, "MPEG-4") == NULL ) /*not mpeg4 found in string */
p_sys->b_rtsp_kasenna = true;
}
else if( !strncasecmp( psz_bol, "sgiMulticastAddress=", sizeof("sgiMulticastAddress=") - 1 ) )
{
psz_bol += sizeof("sgiMulticastAddress=") - 1;
free( p_sys->psz_mcast_ip );
p_sys->psz_mcast_ip = strdup( psz_bol );
}
else if( !strncasecmp( psz_bol, "sgiMulticastPort=", sizeof("sgiMulticastPort=") - 1 ) )
{
psz_bol += sizeof("sgiMulticastPort=") - 1;
p_sys->i_mcast_port = (int) strtol( psz_bol, NULL, 0 );
}
else if( !strncasecmp( psz_bol, "sgiPacketSize=", sizeof("sgiPacketSize=") - 1 ) )
{
psz_bol += sizeof("sgiPacketSize=") - 1;
p_sys->i_packet_size = (int) strtol( psz_bol, NULL, 0 );
}
else if( !strncasecmp( psz_bol, "sgiDuration=", sizeof("sgiDuration=") - 1 ) )
{
psz_bol += sizeof("sgiDuration=") - 1;
p_sys->i_duration = VLC_TICK_FROM_US( strtol( psz_bol, NULL, 0 ) );
}
else if( !strncasecmp( psz_bol, "sgiRtspPort=", sizeof("sgiRtspPort=") - 1 ) )
{
psz_bol += sizeof("sgiRtspPort=") - 1;
p_sys->i_port = (int) strtol( psz_bol, NULL, 0 );
}
else if( !strncasecmp( psz_bol, "sgiSid=", sizeof("sgiSid=") - 1 ) )
{
psz_bol += sizeof("sgiSid=") - 1;
p_sys->i_sid = (int) strtol( psz_bol, NULL, 0 );
}
else if( !strncasecmp( psz_bol, "DeliveryService=cds", sizeof("DeliveryService=cds") - 1 ) )
{
p_sys->b_concert = true;
}
else
{
/* This line isn't really important */
return 0;
}
return VLC_SUCCESS;
}
static int ReadDir( stream_t *p_demux, input_item_node_t *node )
{
demux_sys_t *p_sys = p_demux->p_sys;
input_item_t *p_child = NULL;
char *psz_line;
while( ( psz_line = vlc_stream_ReadLine( p_demux->s ) ) )
{
ParseLine( p_demux, psz_line );
free( psz_line );
}
if( p_sys->psz_mcast_ip )
{
/* Definitely schedules multicast session */
/* We don't care if it's live or not */
free( p_sys->psz_uri );
if( asprintf( &p_sys->psz_uri, "udp://@" "%s:%i", p_sys->psz_mcast_ip, p_sys->i_mcast_port ) == -1 )
{
p_sys->psz_uri = NULL;
return -1;
}
}
if( p_sys->psz_uri == NULL )
{
if( p_sys->psz_server && p_sys->psz_location )
{
if( asprintf( &p_sys->psz_uri, "rtsp://" "%s:%i%s",
p_sys->psz_server, p_sys->i_port > 0 ? p_sys->i_port : 554, p_sys->psz_location ) == -1 )
{
p_sys->psz_uri = NULL;
return -1;
}
}
}
if( p_sys->b_concert )
{
/* It's definitely a simulcasted scheduled stream */
/* We don't care if it's live or not */
if( p_sys->psz_uri == NULL )
{
msg_Err( p_demux, "no URI was found" );
return -1;
}
char *uri;
if( asprintf( &uri, "%s%%3FMeDiAbAsEshowingId=%d%%26MeDiAbAsEconcert"
"%%3FMeDiAbAsE", p_sys->psz_uri, p_sys->i_sid ) == -1 )
return -1;
free( p_sys->psz_uri );
p_sys->psz_uri = uri;
}
p_child = input_item_NewStream( p_sys->psz_uri,
p_sys->psz_name ? p_sys->psz_name : p_sys->psz_uri,
p_sys->i_duration );
if( !p_child )
{
msg_Err( p_demux, "A valid playlistitem could not be created" );
return -1;
}
if( p_sys->i_packet_size && p_sys->psz_mcast_ip )
{
char *psz_option;
p_sys->i_packet_size += 1000;
if( asprintf( &psz_option, "mtu=%i", p_sys->i_packet_size ) != -1 )
{
input_item_AddOption( p_child, psz_option, VLC_INPUT_OPTION_TRUSTED );
free( psz_option );
}
}
if( !p_sys->psz_mcast_ip )
input_item_AddOption( p_child, "rtsp-caching=5000", VLC_INPUT_OPTION_TRUSTED );
if( !p_sys->psz_mcast_ip && p_sys->b_rtsp_kasenna )
input_item_AddOption( p_child, "rtsp-kasenna", VLC_INPUT_OPTION_TRUSTED );
input_item_node_AppendItem( node, p_child );
input_item_Release( p_child );
return VLC_SUCCESS;
}
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