live555: Mark --rtsp-{http,mcast} as safe.
[vlc.git] / modules / demux / live555.cpp
1 /*****************************************************************************
2  * live555.cpp : LIVE555 Streaming Media support.
3  *****************************************************************************
4  * Copyright (C) 2003-2007 the VideoLAN team
5  * $Id$
6  *
7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8  *          Derk-Jan Hartman <hartman at videolan. org>
9  *          Derk-Jan Hartman <djhartman at m2x .dot. nl> for M2X
10  *
11  * This program is free software; you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License as published by
13  * the Free Software Foundation; either version 2 of the License, or
14  * (at your option) any later version.
15  *
16  * This program is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19  * GNU General Public License for more details.
20  *
21  * You should have received a copy of the GNU General Public License
22  * along with this program; if not, write to the Free Software
23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
24  *****************************************************************************/
25
26 /*****************************************************************************
27  * Preamble
28  *****************************************************************************/
29
30 /* For inttypes.h
31  * Note: config.h may include inttypes.h, so make sure we define this option
32  * early enough. */
33 #define __STDC_CONSTANT_MACROS 1
34
35 #ifdef HAVE_CONFIG_H
36 # include "config.h"
37 #endif
38
39 #include <inttypes.h>
40
41 #include <vlc_common.h>
42 #include <vlc_plugin.h>
43 #include <vlc_input.h>
44 #include <vlc_demux.h>
45 #include <vlc_dialog.h>
46 #include <vlc_network.h>
47 #include <vlc_url.h>
48
49 #include <iostream>
50 #include <limits.h>
51 #include <assert.h>
52
53
54 #if defined( WIN32 )
55 #   include <winsock2.h>
56 #endif
57
58 #include "UsageEnvironment.hh"
59 #include "BasicUsageEnvironment.hh"
60 #include "GroupsockHelper.hh"
61 #include "liveMedia.hh"
62
63 extern "C" {
64 #include "../access/mms/asf.h"  /* Who said ugly ? */
65 }
66
67 using namespace std;
68
69 /*****************************************************************************
70  * Module descriptor
71  *****************************************************************************/
72 static int  Open ( vlc_object_t * );
73 static void Close( vlc_object_t * );
74
75 #define CACHING_TEXT N_("Caching value (ms)")
76 #define CACHING_LONGTEXT N_( \
77     "Allows you to modify the default caching value for RTSP streams. This " \
78     "value should be set in millisecond units." )
79
80 #define KASENNA_TEXT N_( "Kasenna RTSP dialect")
81 #define KASENNA_LONGTEXT N_( "Kasenna servers use an old and unstandard " \
82     "dialect of RTSP. When you set this parameter, VLC will try this dialect "\
83     "for communication. In this mode you cannot connect to normal RTSP servers." )
84
85 #define USER_TEXT N_("RTSP user name")
86 #define USER_LONGTEXT N_("Allows you to modify the user name that will " \
87     "be used for authenticating the connection.")
88 #define PASS_TEXT N_("RTSP password")
89 #define PASS_LONGTEXT N_("Allows you to modify the password that will be " \
90     "used for the connection.")
91
92 vlc_module_begin ()
93     set_description( N_("RTP/RTSP/SDP demuxer (using Live555)" ) )
94     set_capability( "demux", 50 )
95     set_shortname( "RTP/RTSP")
96     set_callbacks( Open, Close )
97     add_shortcut( "live" )
98     add_shortcut( "livedotcom" )
99     set_category( CAT_INPUT )
100     set_subcategory( SUBCAT_INPUT_DEMUX )
101
102     add_submodule ()
103         set_description( N_("RTSP/RTP access and demux") )
104         add_shortcut( "rtsp" )
105         add_shortcut( "sdp" )
106         add_shortcut( "live" )
107         add_shortcut( "livedotcom" )
108         set_capability( "access_demux", 0 )
109         set_callbacks( Open, Close )
110         add_bool( "rtsp-tcp", 0, NULL,
111                   N_("Use RTP over RTSP (TCP)"),
112                   N_("Use RTP over RTSP (TCP)"), true )
113             change_safe()
114         add_integer( "rtp-client-port", -1, NULL,
115                   N_("Client port"),
116                   N_("Port to use for the RTP source of the session"), true )
117         add_bool( "rtsp-mcast", false, NULL,
118                   N_("Force multicast RTP via RTSP"),
119                   N_("Force multicast RTP via RTSP"), true )
120             change_safe()
121         add_bool( "rtsp-http", 0, NULL,
122                   N_("Tunnel RTSP and RTP over HTTP"),
123                   N_("Tunnel RTSP and RTP over HTTP"), true )
124             change_safe()
125         add_integer( "rtsp-http-port", 80, NULL,
126                   N_("HTTP tunnel port"),
127                   N_("Port to use for tunneling the RTSP/RTP over HTTP."),
128                   true )
129         add_integer("rtsp-caching", 4 * DEFAULT_PTS_DELAY / 1000, NULL,
130                     CACHING_TEXT, CACHING_LONGTEXT, true )
131             change_safe()
132         add_bool(   "rtsp-kasenna", false, NULL, KASENNA_TEXT,
133                     KASENNA_LONGTEXT, true )
134         add_string( "rtsp-user", NULL, NULL, USER_TEXT,
135                     USER_LONGTEXT, true )
136         add_string( "rtsp-pwd", NULL, NULL, PASS_TEXT,
137                     PASS_LONGTEXT, true )
138 vlc_module_end ()
139
140
141 /*****************************************************************************
142  * Local prototypes
143  *****************************************************************************/
144
145 typedef struct
146 {
147     demux_t         *p_demux;
148     MediaSubsession *sub;
149
150     es_format_t     fmt;
151     es_out_id_t     *p_es;
152
153     bool            b_muxed;
154     bool            b_quicktime;
155     bool            b_asf;
156     stream_t        *p_out_muxed;    /* for muxed stream */
157
158     uint8_t         *p_buffer;
159     unsigned int    i_buffer;
160
161     bool            b_rtcp_sync;
162     char            waiting;
163     int64_t         i_pts;
164     float           i_npt;
165
166 } live_track_t;
167
168 struct timeout_thread_t
169 {
170     demux_sys_t  *p_sys;
171     vlc_thread_t handle;
172     bool         b_handle_keep_alive;
173 };
174
175 struct demux_sys_t
176 {
177     char            *p_sdp;    /* XXX mallocated */
178     char            *psz_path; /* URL-encoded path */
179     vlc_url_t       url;
180
181     MediaSession     *ms;
182     TaskScheduler    *scheduler;
183     UsageEnvironment *env ;
184     RTSPClient       *rtsp;
185
186     /* */
187     int              i_track;
188     live_track_t     **track;   /* XXX mallocated */
189
190     /* Weird formats */
191     asf_header_t     asfh;
192     stream_t         *p_out_asf;
193     bool             b_real;
194
195     /* */
196     int64_t          i_pcr; /* The clock */
197     float            i_npt;
198     float            i_npt_length;
199     float            i_npt_start;
200
201     /* timeout thread information */
202     int              i_timeout;     /* session timeout value in seconds */
203     bool             b_timeout_call;/* mark to send an RTSP call to prevent server timeout */
204     timeout_thread_t *p_timeout;    /* the actual thread that makes sure we don't timeout */
205
206     /* */
207     bool             b_force_mcast;
208     bool             b_multicast;   /* if one of the tracks is multicasted */
209     bool             b_no_data;     /* if we never received any data */
210     int              i_no_data_ti;  /* consecutive number of TaskInterrupt */
211
212     char             event;
213
214     bool             b_get_param;   /* Does the server support GET_PARAMETER */
215 };
216
217 static int Demux  ( demux_t * );
218 static int Control( demux_t *, int, va_list );
219
220 static int Connect      ( demux_t * );
221 static int SessionsSetup( demux_t * );
222 static int Play         ( demux_t *);
223 static int ParseASF     ( demux_t * );
224 static int RollOverTcp  ( demux_t * );
225
226 static void StreamRead  ( void *, unsigned int, unsigned int,
227                           struct timeval, unsigned int );
228 static void StreamClose ( void * );
229 static void TaskInterrupt( void * );
230
231 static void* TimeoutPrevention( void * );
232
233 static unsigned char* parseH264ConfigStr( char const* configStr,
234                                           unsigned int& configSize );
235
236 /*****************************************************************************
237  * DemuxOpen:
238  *****************************************************************************/
239 static int  Open ( vlc_object_t *p_this )
240 {
241     demux_t     *p_demux = (demux_t*)p_this;
242     demux_sys_t *p_sys = NULL;
243
244     int i, i_return;
245     int i_error = VLC_EGENERIC;
246
247     if( p_demux->s )
248     {
249         /* See if it looks like a SDP
250            v, o, s fields are mandatory and in this order */
251         const uint8_t *p_peek;
252         if( stream_Peek( p_demux->s, &p_peek, 7 ) < 7 ) return VLC_EGENERIC;
253
254         if( memcmp( p_peek, "v=0\r\n", 5 ) &&
255             memcmp( p_peek, "v=0\n", 4 ) &&
256             ( p_peek[0] < 'a' || p_peek[0] > 'z' || p_peek[1] != '=' ) )
257         {
258             return VLC_EGENERIC;
259         }
260     }
261     else
262     {
263         var_Create( p_demux, "rtsp-caching", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
264     }
265
266     p_demux->pf_demux  = Demux;
267     p_demux->pf_control= Control;
268     p_demux->p_sys     = p_sys = (demux_sys_t*)malloc( sizeof( demux_sys_t ) );
269     if( !p_sys ) return VLC_ENOMEM;
270
271     p_sys->p_sdp = NULL;
272     p_sys->scheduler = NULL;
273     p_sys->env = NULL;
274     p_sys->ms = NULL;
275     p_sys->rtsp = NULL;
276     p_sys->i_track = 0;
277     p_sys->track   = NULL;
278     p_sys->i_pcr = 0;
279     p_sys->i_npt = 0.;
280     p_sys->i_npt_start = 0.;
281     p_sys->i_npt_length = 0.;
282     p_sys->p_out_asf = NULL;
283     p_sys->b_no_data = true;
284     p_sys->i_no_data_ti = 0;
285     p_sys->p_timeout = NULL;
286     p_sys->i_timeout = 0;
287     p_sys->b_timeout_call = false;
288     p_sys->b_multicast = false;
289     p_sys->b_real = false;
290     p_sys->psz_path = strdup( p_demux->psz_path );
291     p_sys->b_force_mcast = var_CreateGetBool( p_demux, "rtsp-mcast" );
292     p_sys->b_get_param = false;
293
294     /* parse URL for rtsp://[user:[passwd]@]serverip:port/options */
295     vlc_UrlParse( &p_sys->url, p_sys->psz_path, 0 );
296
297     if( ( p_sys->scheduler = BasicTaskScheduler::createNew() ) == NULL )
298     {
299         msg_Err( p_demux, "BasicTaskScheduler::createNew failed" );
300         goto error;
301     }
302     if( !( p_sys->env = BasicUsageEnvironment::createNew(*p_sys->scheduler) ) )
303     {
304         msg_Err( p_demux, "BasicUsageEnvironment::createNew failed" );
305         goto error;
306     }
307
308     if( strcasecmp( p_demux->psz_access, "sdp" ) )
309     {
310         char *p = p_sys->psz_path;
311         while( (p = strchr( p, ' ' )) != NULL ) *p = '+';
312     }
313
314     if( p_demux->s != NULL )
315     {
316         /* Gather the complete sdp file */
317         int     i_sdp       = 0;
318         int     i_sdp_max   = 1000;
319         uint8_t *p_sdp      = (uint8_t*) malloc( i_sdp_max );
320
321         if( !p_sdp )
322         {
323             i_error = VLC_ENOMEM;
324             goto error;
325         }
326
327         for( ;; )
328         {
329             int i_read = stream_Read( p_demux->s, &p_sdp[i_sdp],
330                                       i_sdp_max - i_sdp - 1 );
331
332             if( !vlc_object_alive (p_demux) || p_demux->b_error )
333             {
334                 free( p_sdp );
335                 goto error;
336             }
337
338             if( i_read < 0 )
339             {
340                 msg_Err( p_demux, "failed to read SDP" );
341                 free( p_sdp );
342                 goto error;
343             }
344
345             i_sdp += i_read;
346
347             if( i_read < i_sdp_max - i_sdp - 1 )
348             {
349                 p_sdp[i_sdp] = '\0';
350                 break;
351             }
352
353             i_sdp_max += 1000;
354             p_sdp = (uint8_t*)realloc( p_sdp, i_sdp_max );
355         }
356         p_sys->p_sdp = (char*)p_sdp;
357     }
358     else if( ( p_demux->s == NULL ) &&
359              !strcasecmp( p_demux->psz_access, "sdp" ) )
360     {
361         /* sdp:// link from SAP */
362         p_sys->p_sdp = strdup( p_sys->psz_path );
363     }
364     else if( ( i_return = Connect( p_demux ) ) != VLC_SUCCESS )
365     {
366         msg_Err( p_demux, "Failed to connect with rtsp://%s", p_sys->psz_path );
367         goto error;
368     }
369
370     if( p_sys->p_sdp == NULL )
371     {
372         msg_Err( p_demux, "Failed to retrieve the RTSP Session Description" );
373         i_error = VLC_ENOMEM;
374         goto error;
375     }
376
377     if( ( i_return = SessionsSetup( p_demux ) ) != VLC_SUCCESS )
378     {
379         msg_Err( p_demux, "Nothing to play for rtsp://%s", p_sys->psz_path );
380         goto error;
381     }
382
383     if( p_sys->b_real ) goto error;
384
385     if( ( i_return = Play( p_demux ) ) != VLC_SUCCESS )
386         goto error;
387
388     if( p_sys->p_out_asf && ParseASF( p_demux ) )
389     {
390         msg_Err( p_demux, "cannot find a usable asf header" );
391         /* TODO Clean tracks */
392         goto error;
393     }
394
395     if( p_sys->i_track <= 0 )
396         goto error;
397
398     return VLC_SUCCESS;
399
400 error:
401     for( i = 0; i < p_sys->i_track; i++ )
402     {
403         live_track_t *tk = p_sys->track[i];
404
405         if( tk->b_muxed ) stream_Delete( tk->p_out_muxed );
406         es_format_Clean( &tk->fmt );
407         free( tk->p_buffer );
408         free( tk );
409     }
410
411     if( p_sys->i_track ) free( p_sys->track );
412     if( p_sys->p_out_asf ) stream_Delete( p_sys->p_out_asf );
413     if( p_sys->rtsp && p_sys->ms ) p_sys->rtsp->teardownMediaSession( *p_sys->ms );
414     if( p_sys->p_timeout )
415     {
416         vlc_cancel( p_sys->p_timeout->handle );
417         vlc_join( p_sys->p_timeout->handle, NULL );
418         free( p_sys->p_timeout );
419     }
420     if( p_sys->ms ) Medium::close( p_sys->ms );
421     if( p_sys->rtsp ) RTSPClient::close( p_sys->rtsp );
422     if( p_sys->env ) p_sys->env->reclaim();
423     delete p_sys->scheduler;
424     free( p_sys->p_sdp );
425     free( p_sys->psz_path );
426
427     vlc_UrlClean( &p_sys->url );
428
429     free( p_sys );
430     return i_error;
431 }
432
433 /*****************************************************************************
434  * DemuxClose:
435  *****************************************************************************/
436 static void Close( vlc_object_t *p_this )
437 {
438     demux_t *p_demux = (demux_t*)p_this;
439     demux_sys_t *p_sys = p_demux->p_sys;
440     int i;
441
442     for( i = 0; i < p_sys->i_track; i++ )
443     {
444         live_track_t *tk = p_sys->track[i];
445
446         if( tk->b_muxed ) stream_Delete( tk->p_out_muxed );
447         es_format_Clean( &tk->fmt );
448         free( tk->p_buffer );
449         free( tk );
450     }
451
452     if( p_sys->i_track ) free( p_sys->track );
453     if( p_sys->p_out_asf ) stream_Delete( p_sys->p_out_asf );
454     if( p_sys->rtsp && p_sys->ms ) p_sys->rtsp->teardownMediaSession( *p_sys->ms );
455     if( p_sys->p_timeout )
456     {
457         vlc_cancel( p_sys->p_timeout->handle );
458         vlc_join( p_sys->p_timeout->handle, NULL );
459         free( p_sys->p_timeout );
460     }
461     if( p_sys->ms ) Medium::close( p_sys->ms );
462     if( p_sys->rtsp ) RTSPClient::close( p_sys->rtsp );
463     if( p_sys->env ) p_sys->env->reclaim();
464     delete p_sys->scheduler;
465     free( p_sys->p_sdp );
466     free( p_sys->psz_path );
467
468     vlc_UrlClean( &p_sys->url );
469
470     free( p_sys );
471 }
472
473 /*****************************************************************************
474  * Connect: connects to the RTSP server to setup the session DESCRIBE
475  *****************************************************************************/
476 static int Connect( demux_t *p_demux )
477 {
478     demux_sys_t *p_sys = p_demux->p_sys;
479     Authenticator authenticator;
480     bool b_firstpass  = true;
481     char *psz_user    = NULL;
482     char *psz_pwd     = NULL;
483     char *psz_url     = NULL;
484     char *psz_options = NULL;
485     char *p_sdp       = NULL;
486     int  i_http_port  = 0;
487     int  i_ret        = VLC_SUCCESS;
488
489     if( p_sys->url.i_port == 0 ) p_sys->url.i_port = 554;
490     if( p_sys->url.psz_username || p_sys->url.psz_password )
491     {
492         int err;
493         err = asprintf( &psz_url, "rtsp://%s:%d%s", p_sys->url.psz_host,
494                         p_sys->url.i_port, p_sys->url.psz_path );
495         if( err == -1 ) return VLC_ENOMEM;
496
497         psz_user = strdup( p_sys->url.psz_username );
498         psz_pwd  = strdup( p_sys->url.psz_password );
499     }
500     else
501     {
502         int err;
503         err = asprintf( &psz_url, "rtsp://%s", p_sys->psz_path );
504         if( err == -1 ) return VLC_ENOMEM;
505
506         psz_user = var_CreateGetString( p_demux, "rtsp-user" );
507         psz_pwd  = var_CreateGetString( p_demux, "rtsp-pwd" );
508     }
509
510 createnew:
511     if( !vlc_object_alive (p_demux) || p_demux->b_error )
512     {
513         free( psz_user );
514         free( psz_pwd );
515         free( psz_url );
516         return VLC_EGENERIC;
517     }
518
519     if( var_CreateGetBool( p_demux, "rtsp-http" ) )
520         i_http_port = var_CreateGetInteger( p_demux, "rtsp-http-port" );
521
522     if( ( p_sys->rtsp = RTSPClient::createNew( *p_sys->env,
523           var_CreateGetInteger( p_demux, "verbose" ) > 1,
524           "VLC media player", i_http_port ) ) == NULL )
525     {
526         msg_Err( p_demux, "RTSPClient::createNew failed (%s)",
527                  p_sys->env->getResultMsg() );
528         free( psz_user );
529         free( psz_pwd );
530         free( psz_url );
531         return VLC_EGENERIC;
532     }
533
534     /* Kasenna enables KeepAlive by analysing the User-Agent string.
535      * Appending _KA to the string should be enough to enable this feature,
536      * however, there is a bug where the _KA doesn't get parsed from the
537      * default User-Agent as created by VLC/Live555 code. This is probably due
538      * to spaces in the string or the string being too long. Here we override
539      * the default string with a more compact version.
540      */
541     if( var_CreateGetBool( p_demux, "rtsp-kasenna" ))
542     {
543         p_sys->rtsp->setUserAgentString( "VLC_MEDIA_PLAYER_KA" );
544     }
545
546 describe:
547     authenticator.setUsernameAndPassword( (const char*)psz_user,
548                                           (const char*)psz_pwd );
549
550     /* */
551     const int i_timeout = var_CreateGetInteger(p_demux, "ipv4-timeout") / 1000;
552
553 #if LIVEMEDIA_LIBRARY_VERSION_INT >= 1223337600
554     psz_options = p_sys->rtsp->sendOptionsCmd( psz_url, psz_user, psz_pwd,
555                                                &authenticator, i_timeout );
556 #else
557     psz_options = p_sys->rtsp->sendOptionsCmd( psz_url, psz_user, psz_pwd,
558                                                &authenticator );
559 #endif
560     if( psz_options == NULL && authenticator.realm() != NULL )
561     {
562         // try again, with the realm set this time
563 #if LIVEMEDIA_LIBRARY_VERSION_INT >= 1223337600
564         psz_options = p_sys->rtsp->sendOptionsCmd( psz_url, psz_user, psz_pwd,
565                                                &authenticator, i_timeout );
566 #else
567         psz_options = p_sys->rtsp->sendOptionsCmd( psz_url, psz_user, psz_pwd,
568                                                &authenticator );
569 #endif
570     }
571     if( psz_options )
572         p_sys->b_get_param = strstr( psz_options, "GET_PARAMETER" ) ? true : false ;
573     delete [] psz_options;
574
575 #if LIVEMEDIA_LIBRARY_VERSION_INT >= 1223337600
576     p_sdp = p_sys->rtsp->describeWithPassword( psz_url, (const char*)psz_user, (const char*)psz_pwd,
577                                           var_GetBool( p_demux, "rtsp-kasenna" ), i_timeout );
578 #else
579     p_sdp = p_sys->rtsp->describeWithPassword( psz_url, (const char*)psz_user, (const char*)psz_pwd,
580                                           var_GetBool( p_demux, "rtsp-kasenna" ) );
581 #endif
582
583     if( p_sdp == NULL )
584     {
585         /* failure occurred */
586         int i_code = 0;
587         const char *psz_error = p_sys->env->getResultMsg();
588
589         if( var_GetBool( p_demux, "rtsp-http" ) )
590             sscanf( psz_error, "%*s %*s HTTP GET %*s HTTP/%*u.%*u %3u %*s",
591                     &i_code );
592         else
593         {
594             const char *psz_tmp = strstr( psz_error, "RTSP" );
595             if( psz_tmp )
596                 sscanf( psz_tmp, "RTSP/%*s%3u", &i_code );
597             else
598                 i_code = 0;
599         }
600         msg_Dbg( p_demux, "DESCRIBE failed with %d: %s", i_code, psz_error );
601
602         if( b_firstpass )
603         {   /* describeURL always returns an "RTSP/1.0 401 Unauthorized" the
604              * first time. This is a workaround to avoid asking for a
605              * user/passwd the first time the code passess here. */
606             i_code = 0;
607             b_firstpass = false;
608         }
609
610         if( i_code == 401 )
611         {
612             msg_Dbg( p_demux, "authentication failed" );
613
614             free( psz_user );
615             free( psz_pwd );
616             dialog_Login( p_demux, &psz_user, &psz_pwd,
617                           _("RTSP authentication"),
618                         _("Please enter a valid login name and a password.") );
619             if( psz_user != NULL && psz_pwd != NULL )
620             {
621                 msg_Dbg( p_demux, "retrying with user=%s, pwd=%s",
622                          psz_user, psz_pwd );
623                 goto describe;
624             }
625         }
626         else if( (i_code != 0) && !var_GetBool( p_demux, "rtsp-http" ) )
627         {
628             /* Perhaps a firewall is being annoying. Try HTTP tunneling mode */
629             vlc_value_t val;
630             val.b_bool = true;
631             msg_Dbg( p_demux, "we will now try HTTP tunneling mode" );
632             var_Set( p_demux, "rtsp-http", val );
633             if( p_sys->rtsp ) RTSPClient::close( p_sys->rtsp );
634             p_sys->rtsp = NULL;
635             goto createnew;
636         }
637         else
638         {
639             msg_Dbg( p_demux, "connection timeout" );
640             if( p_sys->rtsp ) RTSPClient::close( p_sys->rtsp );
641             p_sys->rtsp = NULL;
642         }
643         i_ret = VLC_EGENERIC;
644     }
645
646     /* malloc-ated copy */
647     free( psz_url );
648     free( psz_user );
649     free( psz_pwd );
650
651     free( p_sys->p_sdp );
652     p_sys->p_sdp = NULL;
653     if( p_sdp ) p_sys->p_sdp = strdup( (char*)p_sdp );
654     delete[] p_sdp;
655
656     return i_ret;
657 }
658
659 /*****************************************************************************
660  * SessionsSetup: prepares the subsessions and does the SETUP
661  *****************************************************************************/
662 static int SessionsSetup( demux_t *p_demux )
663 {
664     demux_sys_t             *p_sys  = p_demux->p_sys;
665     MediaSubsessionIterator *iter   = NULL;
666     MediaSubsession         *sub    = NULL;
667
668     bool           b_rtsp_tcp = false;
669     int            i_client_port;
670     int            i_return = VLC_SUCCESS;
671     unsigned int   i_buffer = 0;
672     unsigned const thresh = 200000; /* RTP reorder threshold .2 second (default .1) */
673
674     b_rtsp_tcp    = var_CreateGetBool( p_demux, "rtsp-tcp" ) ||
675                     var_GetBool( p_demux, "rtsp-http" );
676     i_client_port = var_CreateGetInteger( p_demux, "rtp-client-port" );
677
678     /* Create the session from the SDP */
679     if( !( p_sys->ms = MediaSession::createNew( *p_sys->env, p_sys->p_sdp ) ) )
680     {
681         msg_Err( p_demux, "Could not create the RTSP Session: %s",
682             p_sys->env->getResultMsg() );
683         return VLC_EGENERIC;
684     }
685
686     /* Initialise each media subsession */
687     iter = new MediaSubsessionIterator( *p_sys->ms );
688     while( ( sub = iter->next() ) != NULL )
689     {
690         Boolean bInit;
691         live_track_t *tk;
692
693         if( !vlc_object_alive (p_demux) || p_demux->b_error )
694         {
695             delete iter;
696             return VLC_EGENERIC;
697         }
698
699         /* Value taken from mplayer */
700         if( !strcmp( sub->mediumName(), "audio" ) )
701             i_buffer = 100000;
702         else if( !strcmp( sub->mediumName(), "video" ) )
703             i_buffer = 2000000;
704         else continue;
705
706         if( i_client_port != -1 )
707         {
708             sub->setClientPortNum( i_client_port );
709             i_client_port += 2;
710         }
711
712         if( strcasestr( sub->codecName(), "REAL" ) )
713         {
714             msg_Info( p_demux, "real codec detected, using real-RTSP instead" );
715             p_sys->b_real = true; /* This is a problem, we'll handle it later */
716             continue;
717         }
718
719         if( !strcmp( sub->codecName(), "X-ASF-PF" ) )
720             bInit = sub->initiate( 4 ); /* Constant ? */
721         else
722             bInit = sub->initiate();
723
724         if( !bInit )
725         {
726             msg_Warn( p_demux, "RTP subsession '%s/%s' failed (%s)",
727                       sub->mediumName(), sub->codecName(),
728                       p_sys->env->getResultMsg() );
729         }
730         else
731         {
732             if( sub->rtpSource() != NULL )
733             {
734                 int fd = sub->rtpSource()->RTPgs()->socketNum();
735
736                 /* Increase the buffer size */
737                 if( i_buffer > 0 )
738                     increaseReceiveBufferTo( *p_sys->env, fd, i_buffer );
739
740                 /* Increase the RTP reorder timebuffer just a bit */
741                 sub->rtpSource()->setPacketReorderingThresholdTime(thresh);
742             }
743             msg_Dbg( p_demux, "RTP subsession '%s/%s'", sub->mediumName(),
744                      sub->codecName() );
745
746             /* Issue the SETUP */
747             if( p_sys->rtsp )
748             {
749                 if( !p_sys->rtsp->setupMediaSubsession( *sub, False,
750                                            b_rtsp_tcp ? True : False,
751                                            ( p_sys->b_force_mcast && !b_rtsp_tcp ) ? True : False ) )
752                 {
753                     /* if we get an unsupported transport error, toggle TCP use and try again */
754                     if( !strstr(p_sys->env->getResultMsg(), "461 Unsupported Transport")
755                      || !p_sys->rtsp->setupMediaSubsession( *sub, False,
756                                            b_rtsp_tcp ? False : True,
757                                            False ) )
758                     {
759                         msg_Err( p_demux, "SETUP of'%s/%s' failed %s", sub->mediumName(),
760                                  sub->codecName(), p_sys->env->getResultMsg() );
761                         continue;
762                     }
763                 }
764             }
765
766             /* Check if we will receive data from this subsession for this track */
767             if( sub->readSource() == NULL ) continue;
768             if( !p_sys->b_multicast )
769             {
770                 /* Check, because we need diff. rollover behaviour for multicast */
771                 p_sys->b_multicast = IsMulticastAddress( sub->connectionEndpointAddress() );
772             }
773
774             tk = (live_track_t*)malloc( sizeof( live_track_t ) );
775             if( !tk )
776             {
777                 delete iter;
778                 return VLC_ENOMEM;
779             }
780             tk->p_demux     = p_demux;
781             tk->sub         = sub;
782             tk->p_es        = NULL;
783             tk->b_quicktime = false;
784             tk->b_asf       = false;
785             tk->b_muxed     = false;
786             tk->p_out_muxed = NULL;
787             tk->waiting     = 0;
788             tk->b_rtcp_sync = false;
789             tk->i_pts       = 0;
790             tk->i_npt       = 0.;
791             tk->i_buffer    = 65536;
792             tk->p_buffer    = (uint8_t *)malloc( 65536 );
793             if( !tk->p_buffer )
794             {
795                 free( tk );
796                 delete iter;
797                 return VLC_ENOMEM;
798             }
799
800             /* Value taken from mplayer */
801             if( !strcmp( sub->mediumName(), "audio" ) )
802             {
803                 es_format_Init( &tk->fmt, AUDIO_ES, VLC_FOURCC('u','n','d','f') );
804                 tk->fmt.audio.i_channels = sub->numChannels();
805                 tk->fmt.audio.i_rate = sub->rtpTimestampFrequency();
806
807                 if( !strcmp( sub->codecName(), "MPA" ) ||
808                     !strcmp( sub->codecName(), "MPA-ROBUST" ) ||
809                     !strcmp( sub->codecName(), "X-MP3-DRAFT-00" ) )
810                 {
811                     tk->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
812                     tk->fmt.audio.i_rate = 0;
813                 }
814                 else if( !strcmp( sub->codecName(), "AC3" ) )
815                 {
816                     tk->fmt.i_codec = VLC_FOURCC( 'a', '5', '2', ' ' );
817                     tk->fmt.audio.i_rate = 0;
818                 }
819                 else if( !strcmp( sub->codecName(), "L16" ) )
820                 {
821                     tk->fmt.i_codec = VLC_FOURCC( 't', 'w', 'o', 's' );
822                     tk->fmt.audio.i_bitspersample = 16;
823                 }
824                 else if( !strcmp( sub->codecName(), "L8" ) )
825                 {
826                     tk->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
827                     tk->fmt.audio.i_bitspersample = 8;
828                 }
829                 else if( !strcmp( sub->codecName(), "PCMU" ) )
830                 {
831                     tk->fmt.i_codec = VLC_FOURCC( 'u', 'l', 'a', 'w' );
832                 }
833                 else if( !strcmp( sub->codecName(), "PCMA" ) )
834                 {
835                     tk->fmt.i_codec = VLC_FOURCC( 'a', 'l', 'a', 'w' );
836                 }
837                 else if( !strncmp( sub->codecName(), "G726", 4 ) )
838                 {
839                     tk->fmt.i_codec = VLC_FOURCC( 'g', '7', '2', '6' );
840                     tk->fmt.audio.i_rate = 8000;
841                     tk->fmt.audio.i_channels = 1;
842                     if( !strcmp( sub->codecName()+5, "40" ) )
843                         tk->fmt.i_bitrate = 40000;
844                     else if( !strcmp( sub->codecName()+5, "32" ) )
845                         tk->fmt.i_bitrate = 32000;
846                     else if( !strcmp( sub->codecName()+5, "24" ) )
847                         tk->fmt.i_bitrate = 24000;
848                     else if( !strcmp( sub->codecName()+5, "16" ) )
849                         tk->fmt.i_bitrate = 16000;
850                 }
851                 else if( !strcmp( sub->codecName(), "AMR" ) )
852                 {
853                     tk->fmt.i_codec = VLC_FOURCC( 's', 'a', 'm', 'r' );
854                 }
855                 else if( !strcmp( sub->codecName(), "AMR-WB" ) )
856                 {
857                     tk->fmt.i_codec = VLC_FOURCC( 's', 'a', 'w', 'b' );
858                 }
859                 else if( !strcmp( sub->codecName(), "MP4A-LATM" ) )
860                 {
861                     unsigned int i_extra;
862                     uint8_t      *p_extra;
863
864                     tk->fmt.i_codec = VLC_FOURCC( 'm', 'p', '4', 'a' );
865
866                     if( ( p_extra = parseStreamMuxConfigStr( sub->fmtp_config(),
867                                                              i_extra ) ) )
868                     {
869                         tk->fmt.i_extra = i_extra;
870                         tk->fmt.p_extra = malloc( i_extra );
871                         memcpy( tk->fmt.p_extra, p_extra, i_extra );
872                         delete[] p_extra;
873                     }
874                     /* Because the "faad" decoder does not handle the LATM data length field
875                        at the start of each returned LATM frame, tell the RTP source to omit it. */
876                     ((MPEG4LATMAudioRTPSource*)sub->rtpSource())->omitLATMDataLengthField();
877                 }
878                 else if( !strcmp( sub->codecName(), "MPEG4-GENERIC" ) )
879                 {
880                     unsigned int i_extra;
881                     uint8_t      *p_extra;
882
883                     tk->fmt.i_codec = VLC_FOURCC( 'm', 'p', '4', 'a' );
884
885                     if( ( p_extra = parseGeneralConfigStr( sub->fmtp_config(),
886                                                            i_extra ) ) )
887                     {
888                         tk->fmt.i_extra = i_extra;
889                         tk->fmt.p_extra = malloc( i_extra );
890                         memcpy( tk->fmt.p_extra, p_extra, i_extra );
891                         delete[] p_extra;
892                     }
893                 }
894                 else if( !strcmp( sub->codecName(), "X-ASF-PF" ) )
895                 {
896                     tk->b_asf = true;
897                     if( p_sys->p_out_asf == NULL )
898                         p_sys->p_out_asf = stream_DemuxNew( p_demux, "asf",
899                                                             p_demux->out );
900                 }
901                 else if( !strcmp( sub->codecName(), "X-QT" ) ||
902                          !strcmp( sub->codecName(), "X-QUICKTIME" ) )
903                 {
904                     tk->b_quicktime = true;
905                 }
906                 else if( !strcmp( sub->codecName(), "SPEEX" ) )
907                 {
908                     tk->fmt.i_codec = VLC_FOURCC( 's', 'p', 'x', 'r' );
909                     if ( sub->rtpTimestampFrequency() )
910                         tk->fmt.audio.i_rate = sub->rtpTimestampFrequency();
911                     else
912                     {
913                         msg_Warn( p_demux,"Using 8kHz as default sample rate." );
914                         tk->fmt.audio.i_rate = 8000;
915                     }
916                 }
917             }
918             else if( !strcmp( sub->mediumName(), "video" ) )
919             {
920                 es_format_Init( &tk->fmt, VIDEO_ES, VLC_FOURCC('u','n','d','f') );
921                 if( !strcmp( sub->codecName(), "MPV" ) )
922                 {
923                     tk->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'v' );
924                 }
925                 else if( !strcmp( sub->codecName(), "H263" ) ||
926                          !strcmp( sub->codecName(), "H263-1998" ) ||
927                          !strcmp( sub->codecName(), "H263-2000" ) )
928                 {
929                     tk->fmt.i_codec = VLC_FOURCC( 'H', '2', '6', '3' );
930                 }
931                 else if( !strcmp( sub->codecName(), "H261" ) )
932                 {
933                     tk->fmt.i_codec = VLC_FOURCC( 'H', '2', '6', '1' );
934                 }
935                 else if( !strcmp( sub->codecName(), "H264" ) )
936                 {
937                     unsigned int i_extra = 0;
938                     uint8_t      *p_extra = NULL;
939
940                     tk->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '4' );
941                     tk->fmt.b_packetized = false;
942
943                     if((p_extra=parseH264ConfigStr( sub->fmtp_spropparametersets(),
944                                                     i_extra ) ) )
945                     {
946                         tk->fmt.i_extra = i_extra;
947                         tk->fmt.p_extra = malloc( i_extra );
948                         memcpy( tk->fmt.p_extra, p_extra, i_extra );
949
950                         delete[] p_extra;
951                     }
952                 }
953                 else if( !strcmp( sub->codecName(), "JPEG" ) )
954                 {
955                     tk->fmt.i_codec = VLC_FOURCC( 'M', 'J', 'P', 'G' );
956                 }
957                 else if( !strcmp( sub->codecName(), "MP4V-ES" ) )
958                 {
959                     unsigned int i_extra;
960                     uint8_t      *p_extra;
961
962                     tk->fmt.i_codec = VLC_FOURCC( 'm', 'p', '4', 'v' );
963
964                     if( ( p_extra = parseGeneralConfigStr( sub->fmtp_config(),
965                                                            i_extra ) ) )
966                     {
967                         tk->fmt.i_extra = i_extra;
968                         tk->fmt.p_extra = malloc( i_extra );
969                         memcpy( tk->fmt.p_extra, p_extra, i_extra );
970                         delete[] p_extra;
971                     }
972                 }
973                 else if( !strcmp( sub->codecName(), "X-QT" ) ||
974                          !strcmp( sub->codecName(), "X-QUICKTIME" ) ||
975                          !strcmp( sub->codecName(), "X-QDM" ) ||
976                          !strcmp( sub->codecName(), "X-SV3V-ES" )  ||
977                          !strcmp( sub->codecName(), "X-SORENSONVIDEO" ) )
978                 {
979                     tk->b_quicktime = true;
980                 }
981                 else if( !strcmp( sub->codecName(), "MP2T" ) )
982                 {
983                     tk->b_muxed = true;
984                     tk->p_out_muxed = stream_DemuxNew( p_demux, "ts", p_demux->out );
985                 }
986                 else if( !strcmp( sub->codecName(), "MP2P" ) ||
987                          !strcmp( sub->codecName(), "MP1S" ) )
988                 {
989                     tk->b_muxed = true;
990                     tk->p_out_muxed = stream_DemuxNew( p_demux, "ps",
991                                                        p_demux->out );
992                 }
993                 else if( !strcmp( sub->codecName(), "X-ASF-PF" ) )
994                 {
995                     tk->b_asf = true;
996                     if( p_sys->p_out_asf == NULL )
997                         p_sys->p_out_asf = stream_DemuxNew( p_demux, "asf",
998                                                             p_demux->out );;
999                 }
1000             }
1001
1002             if( !tk->b_quicktime && !tk->b_muxed && !tk->b_asf )
1003             {
1004                 tk->p_es = es_out_Add( p_demux->out, &tk->fmt );
1005             }
1006
1007             if( sub->rtcpInstance() != NULL )
1008             {
1009                 sub->rtcpInstance()->setByeHandler( StreamClose, tk );
1010             }
1011
1012             if( tk->p_es || tk->b_quicktime || tk->b_muxed || tk->b_asf )
1013             {
1014                 /* Append */
1015                 p_sys->track = (live_track_t**)realloc( p_sys->track, sizeof( live_track_t ) * ( p_sys->i_track + 1 ) );
1016                 p_sys->track[p_sys->i_track++] = tk;
1017             }
1018             else
1019             {
1020                 /* BUG ??? */
1021                 msg_Err( p_demux, "unusable RTSP track. this should not happen" );
1022                 es_format_Clean( &tk->fmt );
1023                 free( tk );
1024             }
1025         }
1026     }
1027     delete iter;
1028     if( p_sys->i_track <= 0 ) i_return = VLC_EGENERIC;
1029
1030     /* Retrieve the starttime if possible */
1031     p_sys->i_npt_start = p_sys->ms->playStartTime();
1032
1033     /* Retrieve the duration if possible */
1034     p_sys->i_npt_length = p_sys->ms->playEndTime();
1035
1036     /* */
1037     msg_Dbg( p_demux, "setup start: %f stop:%f", p_sys->i_npt_start, p_sys->i_npt_length );
1038
1039     /* */
1040     p_sys->b_no_data = true;
1041     p_sys->i_no_data_ti = 0;
1042
1043     return i_return;
1044 }
1045
1046 /*****************************************************************************
1047  * Play: starts the actual playback of the stream
1048  *****************************************************************************/
1049 static int Play( demux_t *p_demux )
1050 {
1051     demux_sys_t *p_sys = p_demux->p_sys;
1052
1053     if( p_sys->rtsp )
1054     {
1055         /* The PLAY */
1056         if( !p_sys->rtsp->playMediaSession( *p_sys->ms, p_sys->i_npt_start, -1, 1 ) )
1057         {
1058             msg_Err( p_demux, "RTSP PLAY failed %s", p_sys->env->getResultMsg() );
1059             return VLC_EGENERIC;
1060         }
1061
1062         /* Retrieve the timeout value and set up a timeout prevention thread */
1063         p_sys->i_timeout = p_sys->rtsp->sessionTimeoutParameter();
1064         if( p_sys->i_timeout <= 0 )
1065             p_sys->i_timeout = 60; /* default value from RFC2326 */
1066
1067         /* start timeout-thread only if GET_PARAMETER is supported by the server */
1068         if( !p_sys->p_timeout && p_sys->b_get_param )
1069         {
1070             msg_Dbg( p_demux, "We have a timeout of %d seconds",  p_sys->i_timeout );
1071             p_sys->p_timeout = (timeout_thread_t *)malloc( sizeof(timeout_thread_t) );
1072             if( p_sys->p_timeout )
1073             {
1074                 memset( p_sys->p_timeout, 0, sizeof(timeout_thread_t) );
1075                 p_sys->p_timeout->p_sys = p_demux->p_sys; /* lol, object recursion :D */
1076                 if( vlc_clone( &p_sys->p_timeout->handle,  TimeoutPrevention,
1077                                p_sys->p_timeout, VLC_THREAD_PRIORITY_LOW ) )
1078                 {
1079                     msg_Err( p_demux, "cannot spawn liveMedia timeout thread" );
1080                     free( p_sys->p_timeout );
1081                     p_sys->p_timeout = NULL;
1082                 }
1083                 else
1084                     msg_Dbg( p_demux, "spawned timeout thread" );
1085             }
1086             else
1087                 msg_Err( p_demux, "cannot spawn liveMedia timeout thread" );
1088         }
1089     }
1090     p_sys->i_pcr = 0;
1091
1092     /* Retrieve the starttime if possible */
1093     p_sys->i_npt_start = p_sys->ms->playStartTime();
1094     p_sys->i_npt_length = p_sys->ms->playEndTime();
1095
1096     msg_Dbg( p_demux, "play start: %f stop:%f", p_sys->i_npt_start, p_sys->i_npt_length );
1097     return VLC_SUCCESS;
1098 }
1099
1100
1101 /*****************************************************************************
1102  * Demux:
1103  *****************************************************************************/
1104 static int Demux( demux_t *p_demux )
1105 {
1106     demux_sys_t    *p_sys = p_demux->p_sys;
1107     TaskToken      task;
1108
1109     bool            b_send_pcr = true;
1110     int64_t         i_pcr = 0;
1111     int             i;
1112
1113     /* Check if we need to send the server a Keep-A-Live signal */
1114     if( p_sys->b_timeout_call && p_sys->rtsp && p_sys->ms )
1115     {
1116         char *psz_bye = NULL;
1117         p_sys->rtsp->getMediaSessionParameter( *p_sys->ms, NULL, psz_bye );
1118         p_sys->b_timeout_call = false;
1119     }
1120
1121     for( i = 0; i < p_sys->i_track; i++ )
1122     {
1123         live_track_t *tk = p_sys->track[i];
1124
1125         if( tk->b_asf || tk->b_muxed )
1126             b_send_pcr = false;
1127 #if 0
1128         if( i_pcr == 0 )
1129         {
1130             i_pcr = tk->i_pts;
1131         }
1132         else if( tk->i_pts != 0 && i_pcr > tk->i_pts )
1133         {
1134             i_pcr = tk->i_pts ;
1135         }
1136 #endif
1137     }
1138     if( p_sys->i_pcr > 0 )
1139     {
1140         if( b_send_pcr )
1141             es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr );
1142     }
1143
1144     /* First warn we want to read data */
1145     p_sys->event = 0;
1146     for( i = 0; i < p_sys->i_track; i++ )
1147     {
1148         live_track_t *tk = p_sys->track[i];
1149
1150         if( tk->waiting == 0 )
1151         {
1152             tk->waiting = 1;
1153             tk->sub->readSource()->getNextFrame( tk->p_buffer, tk->i_buffer,
1154                                           StreamRead, tk, StreamClose, tk );
1155         }
1156     }
1157     /* Create a task that will be called if we wait more than 300ms */
1158     task = p_sys->scheduler->scheduleDelayedTask( 300000, TaskInterrupt, p_demux );
1159
1160     /* Do the read */
1161     p_sys->scheduler->doEventLoop( &p_sys->event );
1162
1163     /* remove the task */
1164     p_sys->scheduler->unscheduleDelayedTask( task );
1165
1166     /* Check for gap in pts value */
1167     for( i = 0; i < p_sys->i_track; i++ )
1168     {
1169         live_track_t *tk = p_sys->track[i];
1170
1171         if( !tk->b_muxed && !tk->b_rtcp_sync &&
1172             tk->sub->rtpSource() && tk->sub->rtpSource()->hasBeenSynchronizedUsingRTCP() )
1173         {
1174             msg_Dbg( p_demux, "tk->rtpSource->hasBeenSynchronizedUsingRTCP()" );
1175
1176             es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
1177             tk->b_rtcp_sync = true;
1178             /* reset PCR */
1179             tk->i_pts = 0;
1180             tk->i_npt = 0.;
1181             p_sys->i_pcr = 0;
1182             p_sys->i_npt = 0.;
1183             i_pcr = 0;
1184         }
1185     }
1186
1187     if( p_sys->b_multicast && p_sys->b_no_data &&
1188         ( p_sys->i_no_data_ti > 120 ) )
1189     {
1190         /* FIXME Make this configurable
1191         msg_Err( p_demux, "no multicast data received in 36s, aborting" );
1192         return 0;
1193         */
1194     }
1195     else if( !p_sys->b_multicast && p_sys->b_no_data &&
1196              ( p_sys->i_no_data_ti > 34 ) )
1197     {
1198         bool b_rtsp_tcp = var_GetBool( p_demux, "rtsp-tcp" ) ||
1199                                 var_GetBool( p_demux, "rtsp-http" );
1200
1201         if( !b_rtsp_tcp && p_sys->rtsp && p_sys->ms )
1202         {
1203             msg_Warn( p_demux, "no data received in 10s. Switching to TCP" );
1204             if( RollOverTcp( p_demux ) )
1205             {
1206                 msg_Err( p_demux, "TCP rollover failed, aborting" );
1207                 return 0;
1208             }
1209             return 1;
1210         }
1211         msg_Err( p_demux, "no data received in 10s, aborting" );
1212         return 0;
1213     }
1214     else if( !p_sys->b_multicast && p_sys->i_no_data_ti > 34 )
1215     {
1216         /* EOF ? */
1217         msg_Warn( p_demux, "no data received in 10s, eof ?" );
1218         return 0;
1219     }
1220     return p_demux->b_error ? 0 : 1;
1221 }
1222
1223 /*****************************************************************************
1224  * Control:
1225  *****************************************************************************/
1226 static int Control( demux_t *p_demux, int i_query, va_list args )
1227 {
1228     demux_sys_t *p_sys = p_demux->p_sys;
1229     int64_t *pi64, i64;
1230     double  *pf, f;
1231     bool *pb, *pb2, b_bool;
1232     int *pi_int;
1233
1234     switch( i_query )
1235     {
1236         case DEMUX_GET_TIME:
1237             pi64 = (int64_t*)va_arg( args, int64_t * );
1238             if( p_sys->i_npt > 0 )
1239             {
1240                 *pi64 = (int64_t)(p_sys->i_npt * 1000000.);
1241                 return VLC_SUCCESS;
1242             }
1243             return VLC_EGENERIC;
1244
1245         case DEMUX_GET_LENGTH:
1246             pi64 = (int64_t*)va_arg( args, int64_t * );
1247             if( p_sys->i_npt_length > 0 )
1248             {
1249                 *pi64 = (int64_t)((double)p_sys->i_npt_length * 1000000.0);
1250                 return VLC_SUCCESS;
1251             }
1252             return VLC_EGENERIC;
1253
1254         case DEMUX_GET_POSITION:
1255             pf = (double*)va_arg( args, double* );
1256             if( (p_sys->i_npt_length > 0) && (p_sys->i_npt > 0) )
1257             {
1258                 *pf = ( (double)p_sys->i_npt / (double)p_sys->i_npt_length );
1259                 return VLC_SUCCESS;
1260             }
1261             return VLC_EGENERIC;
1262
1263         case DEMUX_SET_POSITION:
1264         case DEMUX_SET_TIME:
1265             if( p_sys->rtsp && (p_sys->i_npt_length > 0) )
1266             {
1267                 int i;
1268                 float time;
1269
1270                 if( (i_query == DEMUX_SET_TIME) && (p_sys->i_npt > 0) )
1271                 {
1272                     i64 = (int64_t)va_arg( args, int64_t );
1273                     time = (float)((double)i64 / (double)1000000.0); /* in second */
1274                 }
1275                 else if( i_query == DEMUX_SET_TIME )
1276                     return VLC_EGENERIC;
1277                 else
1278                 {
1279                     f = (double)va_arg( args, double );
1280                     time = f * (double)p_sys->i_npt_length;   /* in second */
1281                 }
1282
1283                 if( !p_sys->rtsp->playMediaSession( *p_sys->ms, time, -1, 1 ) )
1284                 {
1285                     msg_Err( p_demux, "PLAY failed %s",
1286                         p_sys->env->getResultMsg() );
1287                     return VLC_EGENERIC;
1288                 }
1289                 p_sys->i_pcr = 0;
1290
1291                 /* Retrieve RTP-Info values */
1292                 for( i = 0; i < p_sys->i_track; i++ )
1293                 {
1294                     p_sys->track[i]->b_rtcp_sync = false;
1295                     p_sys->track[i]->i_pts = 0;
1296                 }
1297
1298                 /* Retrieve the starttime if possible */
1299                 p_sys->i_npt = p_sys->i_npt_start = p_sys->ms->playStartTime();
1300
1301                 /* Retrieve the duration if possible */
1302                 p_sys->i_npt_length = p_sys->ms->playEndTime();
1303
1304                 msg_Dbg( p_demux, "seek start: %f stop:%f", p_sys->i_npt_start, p_sys->i_npt_length );
1305                 return VLC_SUCCESS;
1306             }
1307             return VLC_EGENERIC;
1308
1309         /* Special for access_demux */
1310         case DEMUX_CAN_PAUSE:
1311         case DEMUX_CAN_SEEK:
1312             pb = (bool*)va_arg( args, bool * );
1313             if( p_sys->rtsp && p_sys->i_npt_length > 0 )
1314                 /* Not always true, but will be handled in SET_PAUSE_STATE */
1315                 *pb = true;
1316             else
1317                 *pb = false;
1318             return VLC_SUCCESS;
1319
1320         case DEMUX_CAN_CONTROL_PACE:
1321             pb = (bool*)va_arg( args, bool * );
1322
1323 #if 1       /* Disable for now until we have a clock synchro algo
1324              * which works with something else than MPEG over UDP */
1325             *pb = false;
1326 #else
1327             *pb = true;
1328 #endif
1329             return VLC_SUCCESS;
1330
1331         case DEMUX_CAN_CONTROL_RATE:
1332             pb = (bool*)va_arg( args, bool * );
1333             pb2 = (bool*)va_arg( args, bool * );
1334
1335             *pb = (p_sys->rtsp != NULL) &&
1336                     (p_sys->i_npt_length > 0) &&
1337                     !var_GetBool( p_demux, "rtsp-kasenna" );
1338             *pb2 = false;
1339             return VLC_SUCCESS;
1340
1341         case DEMUX_SET_RATE:
1342         {
1343             double f_scale, f_old_scale;
1344
1345             if( !p_sys->rtsp || (p_sys->i_npt_length <= 0) ||
1346                 var_GetBool( p_demux, "rtsp-kasenna" ) )
1347                 return VLC_EGENERIC;
1348
1349             /* According to RFC 2326 p56 chapter 12.35 a RTSP server that
1350              * supports Scale should:
1351              *
1352              * "The server should try to approximate the viewing rate, but may
1353              *  restrict the range of scale values that it supports. The response
1354              *  MUST contain the actual scale value chosen by the server."
1355              *
1356              * Scale = 1 indicates normal play
1357              * Scale > 1 indicates fast forward
1358              * Scale < 1 && Scale > 0 indicates slow motion
1359              * Scale < 0 value indicates rewind
1360              */
1361
1362             pi_int = (int*)va_arg( args, int * );
1363             f_scale = (double)INPUT_RATE_DEFAULT / (*pi_int);
1364             f_old_scale = p_sys->ms->scale();
1365
1366             /* Passing -1 for the start and end time will mean liveMedia won't
1367              * create a Range: section for the RTSP message. The server should
1368              * pick up from the current position */
1369             if( !p_sys->rtsp->playMediaSession( *p_sys->ms, -1, -1, f_scale ) )
1370             {
1371                 msg_Err( p_demux, "PLAY with Scale %0.2f failed %s", f_scale,
1372                         p_sys->env->getResultMsg() );
1373                 return VLC_EGENERIC;
1374             }
1375
1376             if( p_sys->ms->scale() == f_old_scale )
1377             {
1378                 msg_Err( p_demux, "no scale change using old Scale %0.2f",
1379                           p_sys->ms->scale() );
1380                 return VLC_EGENERIC;
1381             }
1382
1383             /* ReSync the stream */
1384             p_sys->i_npt_start = 0;
1385             p_sys->i_pcr = 0;
1386             p_sys->i_npt = 0.0;
1387
1388             *pi_int = (int)( INPUT_RATE_DEFAULT / p_sys->ms->scale() );
1389             msg_Dbg( p_demux, "PLAY with new Scale %0.2f (%d)", p_sys->ms->scale(), (*pi_int) );
1390             return VLC_SUCCESS;
1391         }
1392
1393         case DEMUX_SET_PAUSE_STATE:
1394         {
1395             int i;
1396
1397             b_bool = (bool)va_arg( args, int );
1398             if( p_sys->rtsp == NULL )
1399                 return VLC_EGENERIC;
1400
1401             /* FIXME */
1402             if( ( b_bool && !p_sys->rtsp->pauseMediaSession( *p_sys->ms ) ) ||
1403                     ( !b_bool && !p_sys->rtsp->playMediaSession( *p_sys->ms,
1404                        -1 ) ) )
1405             {
1406                     msg_Err( p_demux, "PLAY or PAUSE failed %s", p_sys->env->getResultMsg() );
1407                     return VLC_EGENERIC;
1408             }
1409
1410             /* When we Pause, we'll need the TimeoutPrevention thread to
1411              * handle sending the "Keep Alive" message to the server.
1412              * Unfortunately Live555 isn't thread safe and so can't
1413              * do this normally while the main Demux thread is handling
1414              * a live stream. We end up with the Timeout thread blocking
1415              * waiting for a response from the server. So when we PAUSE
1416              * we set a flag that the TimeoutPrevention function will check
1417              * and if it's set, it will trigger the GET_PARAMETER message */
1418             if( b_bool && p_sys->p_timeout != NULL )
1419                 p_sys->p_timeout->b_handle_keep_alive = true;
1420             else if( !b_bool && p_sys->p_timeout != NULL )
1421                 p_sys->p_timeout->b_handle_keep_alive = false;
1422
1423             for( i = 0; !b_bool && i < p_sys->i_track; i++ )
1424             {
1425                 live_track_t *tk = p_sys->track[i];
1426                 tk->b_rtcp_sync = false;
1427                 tk->i_pts = 0;
1428                 p_sys->i_pcr = 0;
1429                 es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
1430             }
1431
1432             /* Retrieve the starttime if possible */
1433             p_sys->i_npt_start = p_sys->ms->playStartTime();
1434
1435             /* Retrieve the duration if possible */
1436             p_sys->i_npt_length = p_sys->ms->playEndTime();
1437
1438             msg_Dbg( p_demux, "pause start: %f stop:%f", p_sys->i_npt_start, p_sys->i_npt_length );
1439             return VLC_SUCCESS;
1440         }
1441         case DEMUX_GET_TITLE_INFO:
1442         case DEMUX_SET_TITLE:
1443         case DEMUX_SET_SEEKPOINT:
1444             return VLC_EGENERIC;
1445
1446         case DEMUX_GET_PTS_DELAY:
1447             pi64 = (int64_t*)va_arg( args, int64_t * );
1448             *pi64 = (int64_t)var_GetInteger( p_demux, "rtsp-caching" ) * 1000;
1449             return VLC_SUCCESS;
1450
1451         default:
1452             return VLC_EGENERIC;
1453     }
1454 }
1455
1456 /*****************************************************************************
1457  * RollOverTcp: reopen the rtsp into TCP mode
1458  * XXX: ugly, a lot of code are duplicated from Open()
1459  * This should REALLY be fixed
1460  *****************************************************************************/
1461 static int RollOverTcp( demux_t *p_demux )
1462 {
1463     demux_sys_t *p_sys = p_demux->p_sys;
1464     int i, i_return;
1465
1466     var_SetBool( p_demux, "rtsp-tcp", true );
1467
1468     /* We close the old RTSP session */
1469     for( i = 0; i < p_sys->i_track; i++ )
1470     {
1471         live_track_t *tk = p_sys->track[i];
1472
1473         if( tk->b_muxed ) stream_Delete( tk->p_out_muxed );
1474         if( tk->p_es ) es_out_Del( p_demux->out, tk->p_es );
1475         es_format_Clean( &tk->fmt );
1476         free( tk->p_buffer );
1477         free( tk );
1478     }
1479     if( p_sys->i_track ) free( p_sys->track );
1480     if( p_sys->p_out_asf ) stream_Delete( p_sys->p_out_asf );
1481
1482     p_sys->rtsp->teardownMediaSession( *p_sys->ms );
1483     Medium::close( p_sys->ms );
1484     RTSPClient::close( p_sys->rtsp );
1485
1486     p_sys->ms = NULL;
1487     p_sys->rtsp = NULL;
1488     p_sys->track = NULL;
1489     p_sys->i_track = 0;
1490     p_sys->b_no_data = true;
1491     p_sys->i_no_data_ti = 0;
1492
1493     /* Reopen rtsp client */
1494     if( ( i_return = Connect( p_demux ) ) != VLC_SUCCESS )
1495     {
1496         msg_Err( p_demux, "Failed to connect with rtsp://%s",
1497                  p_sys->psz_path );
1498         goto error;
1499     }
1500
1501     if( p_sys->p_sdp == NULL )
1502     {
1503         msg_Err( p_demux, "Failed to retrieve the RTSP Session Description" );
1504         goto error;
1505     }
1506
1507     if( ( i_return = SessionsSetup( p_demux ) ) != VLC_SUCCESS )
1508     {
1509         msg_Err( p_demux, "Nothing to play for rtsp://%s", p_sys->psz_path );
1510         goto error;
1511     }
1512
1513     if( ( i_return = Play( p_demux ) ) != VLC_SUCCESS )
1514         goto error;
1515
1516     return VLC_SUCCESS;
1517
1518 error:
1519     return VLC_EGENERIC;
1520 }
1521
1522
1523 /*****************************************************************************
1524  *
1525  *****************************************************************************/
1526 static void StreamRead( void *p_private, unsigned int i_size,
1527                         unsigned int i_truncated_bytes, struct timeval pts,
1528                         unsigned int duration )
1529 {
1530     live_track_t   *tk = (live_track_t*)p_private;
1531     demux_t        *p_demux = tk->p_demux;
1532     demux_sys_t    *p_sys = p_demux->p_sys;
1533     block_t        *p_block;
1534
1535     //msg_Dbg( p_demux, "pts: %d", pts.tv_sec );
1536
1537     int64_t i_pts = (int64_t)pts.tv_sec * INT64_C(1000000) +
1538         (int64_t)pts.tv_usec;
1539
1540     /* XXX Beurk beurk beurk Avoid having negative value XXX */
1541     i_pts &= INT64_C(0x00ffffffffffffff);
1542
1543     /* Retrieve NPT for this pts */
1544     tk->i_npt = tk->sub->getNormalPlayTime(pts);
1545
1546     if( tk->b_quicktime && tk->p_es == NULL )
1547     {
1548         QuickTimeGenericRTPSource *qtRTPSource =
1549             (QuickTimeGenericRTPSource*)tk->sub->rtpSource();
1550         QuickTimeGenericRTPSource::QTState &qtState = qtRTPSource->qtState;
1551         uint8_t *sdAtom = (uint8_t*)&qtState.sdAtom[4];
1552
1553         if( tk->fmt.i_cat == VIDEO_ES ) {
1554             if( qtState.sdAtomSize < 16 + 32 )
1555             {
1556                 /* invalid */
1557                 p_sys->event = 0xff;
1558                 tk->waiting = 0;
1559                 return;
1560             }
1561             tk->fmt.i_codec = VLC_FOURCC(sdAtom[0],sdAtom[1],sdAtom[2],sdAtom[3]);
1562             tk->fmt.video.i_width  = (sdAtom[28] << 8) | sdAtom[29];
1563             tk->fmt.video.i_height = (sdAtom[30] << 8) | sdAtom[31];
1564
1565             if( tk->fmt.i_codec == VLC_FOURCC('a', 'v', 'c', '1') )
1566             {
1567                 uint8_t *pos = (uint8_t*)qtRTPSource->qtState.sdAtom + 86;
1568                 uint8_t *endpos = (uint8_t*)qtRTPSource->qtState.sdAtom
1569                                   + qtRTPSource->qtState.sdAtomSize;
1570                 while (pos+8 < endpos) {
1571                     unsigned int atomLength = pos[0]<<24 | pos[1]<<16 | pos[2]<<8 | pos[3];
1572                     if( atomLength == 0 || atomLength > (unsigned int)(endpos-pos)) break;
1573                     if( memcmp(pos+4, "avcC", 4) == 0 &&
1574                         atomLength > 8 &&
1575                         atomLength <= INT_MAX )
1576                     {
1577                         tk->fmt.i_extra = atomLength-8;
1578                         tk->fmt.p_extra = malloc( tk->fmt.i_extra );
1579                         memcpy(tk->fmt.p_extra, pos+8, atomLength-8);
1580                         break;
1581                     }
1582                     pos += atomLength;
1583                 }
1584             }
1585             else
1586             {
1587                 tk->fmt.i_extra        = qtState.sdAtomSize - 16;
1588                 tk->fmt.p_extra        = malloc( tk->fmt.i_extra );
1589                 memcpy( tk->fmt.p_extra, &sdAtom[12], tk->fmt.i_extra );
1590             }
1591         }
1592         else {
1593             if( qtState.sdAtomSize < 4 )
1594             {
1595                 /* invalid */
1596                 p_sys->event = 0xff;
1597                 tk->waiting = 0;
1598                 return;
1599             }
1600             tk->fmt.i_codec = VLC_FOURCC(sdAtom[0],sdAtom[1],sdAtom[2],sdAtom[3]);
1601         }
1602         tk->p_es = es_out_Add( p_demux->out, &tk->fmt );
1603     }
1604
1605 #if 0
1606     fprintf( stderr, "StreamRead size=%d pts=%lld\n",
1607              i_size,
1608              pts.tv_sec * 1000000LL + pts.tv_usec );
1609 #endif
1610
1611     /* grow buffer if it looks like buffer is too small, but don't eat
1612      * up all the memory on strange streams */
1613     if( i_truncated_bytes > 0 && tk->i_buffer < 2000000 )
1614     {
1615         void *p_tmp;
1616         msg_Dbg( p_demux, "lost %d bytes", i_truncated_bytes );
1617         msg_Dbg( p_demux, "increasing buffer size to %d", tk->i_buffer * 2 );
1618         tk->i_buffer *= 2;
1619         p_tmp = realloc( tk->p_buffer, tk->i_buffer );
1620         if( p_tmp == NULL )
1621         {
1622             msg_Warn( p_demux, "realloc failed" );
1623         }
1624         else
1625         {
1626             tk->p_buffer = (uint8_t*)p_tmp;
1627         }
1628     }
1629     if( i_size > tk->i_buffer )
1630     {
1631         msg_Warn( p_demux, "buffer overflow" );
1632     }
1633     /* FIXME could i_size be > buffer size ? */
1634     if( tk->fmt.i_codec == VLC_FOURCC('s','a','m','r') ||
1635         tk->fmt.i_codec == VLC_FOURCC('s','a','w','b') )
1636     {
1637         AMRAudioSource *amrSource = (AMRAudioSource*)tk->sub->readSource();
1638
1639         p_block = block_New( p_demux, i_size + 1 );
1640         p_block->p_buffer[0] = amrSource->lastFrameHeader();
1641         memcpy( p_block->p_buffer + 1, tk->p_buffer, i_size );
1642     }
1643     else if( tk->fmt.i_codec == VLC_FOURCC('H','2','6','1') )
1644     {
1645         H261VideoRTPSource *h261Source = (H261VideoRTPSource*)tk->sub->rtpSource();
1646         uint32_t header = h261Source->lastSpecialHeader();
1647         p_block = block_New( p_demux, i_size + 4 );
1648         memcpy( p_block->p_buffer, &header, 4 );
1649         memcpy( p_block->p_buffer + 4, tk->p_buffer, i_size );
1650
1651         if( tk->sub->rtpSource()->curPacketMarkerBit() )
1652             p_block->i_flags |= BLOCK_FLAG_END_OF_FRAME;
1653     }
1654     else if( tk->fmt.i_codec == VLC_FOURCC('h','2','6','4') )
1655     {
1656         if( (tk->p_buffer[0] & 0x1f) >= 24 )
1657             msg_Warn( p_demux, "unsupported NAL type for H264" );
1658
1659         /* Normal NAL type */
1660         p_block = block_New( p_demux, i_size + 4 );
1661         p_block->p_buffer[0] = 0x00;
1662         p_block->p_buffer[1] = 0x00;
1663         p_block->p_buffer[2] = 0x00;
1664         p_block->p_buffer[3] = 0x01;
1665         memcpy( &p_block->p_buffer[4], tk->p_buffer, i_size );
1666     }
1667     else if( tk->b_asf )
1668     {
1669         int i_copy = __MIN( p_sys->asfh.i_min_data_packet_size, (int)i_size );
1670         p_block = block_New( p_demux, p_sys->asfh.i_min_data_packet_size );
1671
1672         memcpy( p_block->p_buffer, tk->p_buffer, i_copy );
1673     }
1674     else
1675     {
1676         p_block = block_New( p_demux, i_size );
1677         memcpy( p_block->p_buffer, tk->p_buffer, i_size );
1678     }
1679
1680     if( p_sys->i_pcr < i_pts )
1681     {
1682         p_sys->i_pcr = i_pts;
1683     }
1684
1685     if( (i_pts != tk->i_pts) && (!tk->b_muxed) )
1686     {
1687         p_block->i_pts = i_pts;
1688     }
1689
1690     /* Update our global npt value */
1691     if( tk->i_npt > 0 && tk->i_npt > p_sys->i_npt && tk->i_npt < p_sys->i_npt_length)
1692         p_sys->i_npt = tk->i_npt;
1693
1694     if( !tk->b_muxed )
1695     {
1696         /*FIXME: for h264 you should check that packetization-mode=1 in sdp-file */
1697         p_block->i_dts = ( tk->fmt.i_codec == VLC_FOURCC( 'm', 'p', 'g', 'v' ) ) ? 0 : i_pts;
1698     }
1699
1700     if( tk->b_muxed )
1701     {
1702         stream_DemuxSend( tk->p_out_muxed, p_block );
1703     }
1704     else if( tk->b_asf )
1705     {
1706         stream_DemuxSend( p_sys->p_out_asf, p_block );
1707     }
1708     else
1709     {
1710         es_out_Send( p_demux->out, tk->p_es, p_block );
1711     }
1712
1713     /* warn that's ok */
1714     p_sys->event = 0xff;
1715
1716     /* we have read data */
1717     tk->waiting = 0;
1718     p_demux->p_sys->b_no_data = false;
1719     p_demux->p_sys->i_no_data_ti = 0;
1720
1721     if( i_pts > 0 && !tk->b_muxed )
1722     {
1723         tk->i_pts = i_pts;
1724     }
1725 }
1726
1727 /*****************************************************************************
1728  *
1729  *****************************************************************************/
1730 static void StreamClose( void *p_private )
1731 {
1732     live_track_t   *tk = (live_track_t*)p_private;
1733     demux_t        *p_demux = tk->p_demux;
1734     demux_sys_t    *p_sys = p_demux->p_sys;
1735
1736     msg_Dbg( p_demux, "StreamClose" );
1737
1738     p_sys->event = 0xff;
1739     p_demux->b_error = true;
1740 }
1741
1742
1743 /*****************************************************************************
1744  *
1745  *****************************************************************************/
1746 static void TaskInterrupt( void *p_private )
1747 {
1748     demux_t *p_demux = (demux_t*)p_private;
1749
1750     p_demux->p_sys->i_no_data_ti++;
1751
1752     /* Avoid lock */
1753     p_demux->p_sys->event = 0xff;
1754 }
1755
1756 /*****************************************************************************
1757  *
1758  *****************************************************************************/
1759 static void* TimeoutPrevention( void *p_data )
1760 {
1761     timeout_thread_t *p_timeout = (timeout_thread_t *)p_data;
1762
1763     for( ;; )
1764     {
1765         /* Voodoo (= no) thread safety here! *Ahem* */
1766         if( p_timeout->b_handle_keep_alive )
1767         {
1768             char *psz_bye = NULL;
1769             int canc = vlc_savecancel ();
1770
1771             p_timeout->p_sys->rtsp->getMediaSessionParameter( *p_timeout->p_sys->ms, NULL, psz_bye );
1772             vlc_restorecancel (canc);
1773         }
1774         p_timeout->p_sys->b_timeout_call = !p_timeout->b_handle_keep_alive;
1775
1776         msleep (((int64_t)p_timeout->p_sys->i_timeout - 2) * CLOCK_FREQ);
1777     }
1778     assert(0); /* dead code */
1779 }
1780
1781 /*****************************************************************************
1782  *
1783  *****************************************************************************/
1784 static int b64_decode( char *dest, char *src );
1785
1786 static int ParseASF( demux_t *p_demux )
1787 {
1788     demux_sys_t    *p_sys = p_demux->p_sys;
1789
1790     const char *psz_marker = "a=pgmpu:data:application/vnd.ms.wms-hdr.asfv1;base64,";
1791     char *psz_asf = strcasestr( p_sys->p_sdp, psz_marker );
1792     char *psz_end;
1793     block_t *p_header;
1794
1795     /* Parse the asf header */
1796     if( psz_asf == NULL )
1797         return VLC_EGENERIC;
1798
1799     psz_asf += strlen( psz_marker );
1800     psz_asf = strdup( psz_asf );    /* Duplicate it */
1801     psz_end = strchr( psz_asf, '\n' );
1802
1803     while( psz_end > psz_asf && ( *psz_end == '\n' || *psz_end == '\r' ) )
1804         *psz_end-- = '\0';
1805
1806     if( psz_asf >= psz_end )
1807     {
1808         free( psz_asf );
1809         return VLC_EGENERIC;
1810     }
1811
1812     /* Always smaller */
1813     p_header = block_New( p_demux, psz_end - psz_asf );
1814     p_header->i_buffer = b64_decode( (char*)p_header->p_buffer, psz_asf );
1815     //msg_Dbg( p_demux, "Size=%d Hdrb64=%s", p_header->i_buffer, psz_asf );
1816     if( p_header->i_buffer <= 0 )
1817     {
1818         free( psz_asf );
1819         return VLC_EGENERIC;
1820     }
1821
1822     /* Parse it to get packet size */
1823     asf_HeaderParse( &p_sys->asfh, p_header->p_buffer, p_header->i_buffer );
1824
1825     /* Send it to demuxer */
1826     stream_DemuxSend( p_sys->p_out_asf, p_header );
1827
1828     free( psz_asf );
1829     return VLC_SUCCESS;
1830 }
1831
1832
1833 static unsigned char* parseH264ConfigStr( char const* configStr,
1834                                           unsigned int& configSize )
1835 {
1836     char *dup, *psz;
1837     int i, i_records = 1;
1838
1839     if( configSize )
1840     configSize = 0;
1841
1842     if( configStr == NULL || *configStr == '\0' )
1843         return NULL;
1844
1845     psz = dup = strdup( configStr );
1846
1847     /* Count the number of comma's */
1848     for( psz = dup; *psz != '\0'; ++psz )
1849     {
1850         if( *psz == ',')
1851         {
1852             ++i_records;
1853             *psz = '\0';
1854         }
1855     }
1856
1857     unsigned char *cfg = new unsigned char[5 * strlen(dup)];
1858     psz = dup;
1859     for( i = 0; i < i_records; i++ )
1860     {
1861         cfg[configSize++] = 0x00;
1862         cfg[configSize++] = 0x00;
1863         cfg[configSize++] = 0x00;
1864         cfg[configSize++] = 0x01;
1865
1866         configSize += b64_decode( (char*)&cfg[configSize], psz );
1867         psz += strlen(psz)+1;
1868     }
1869
1870     free( dup );
1871     return cfg;
1872 }
1873
1874 /*char b64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";*/
1875 static int b64_decode( char *dest, char *src )
1876 {
1877     const char *dest_start = dest;
1878     int  i_level;
1879     int  last = 0;
1880     int  b64[256] = {
1881         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* 00-0F */
1882         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* 10-1F */
1883         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,62,-1,-1,-1,63,  /* 20-2F */
1884         52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-1,-1,-1,  /* 30-3F */
1885         -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,  /* 40-4F */
1886         15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1,  /* 50-5F */
1887         -1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,  /* 60-6F */
1888         41,42,43,44,45,46,47,48,49,50,51,-1,-1,-1,-1,-1,  /* 70-7F */
1889         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* 80-8F */
1890         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* 90-9F */
1891         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* A0-AF */
1892         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* B0-BF */
1893         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* C0-CF */
1894         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* D0-DF */
1895         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* E0-EF */
1896         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1   /* F0-FF */
1897         };
1898
1899     for( i_level = 0; *src != '\0'; src++ )
1900     {
1901         int  c;
1902
1903         c = b64[(unsigned int)*src];
1904         if( c == -1 )
1905         {
1906             continue;
1907         }
1908
1909         switch( i_level )
1910         {
1911             case 0:
1912                 i_level++;
1913                 break;
1914             case 1:
1915                 *dest++ = ( last << 2 ) | ( ( c >> 4)&0x03 );
1916                 i_level++;
1917                 break;
1918             case 2:
1919                 *dest++ = ( ( last << 4 )&0xf0 ) | ( ( c >> 2 )&0x0f );
1920                 i_level++;
1921                 break;
1922             case 3:
1923                 *dest++ = ( ( last &0x03 ) << 6 ) | c;
1924                 i_level = 0;
1925         }
1926         last = c;
1927     }
1928
1929     *dest = '\0';
1930
1931     return dest - dest_start;
1932 }