fd4d69d9b7259244ba926f78d82929529c156df4
[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
44 #include <vlc_demux.h>
45 #include <vlc_interface.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         set_capability( "access_demux", 0 );
107         set_callbacks( Open, Close );
108         add_bool( "rtsp-tcp", 0, NULL,
109                   N_("Use RTP over RTSP (TCP)"),
110                   N_("Use RTP over RTSP (TCP)"), true );
111         add_integer( "rtp-client-port", -1, NULL,
112                   N_("Client port"),
113                   N_("Port to use for the RTP source of the session"), true );
114         add_bool( "rtsp-mcast", false, NULL,
115                   N_("Force multicast RTP via RTSP"),
116                   N_("Force multicast RTP via RTSP"), true );
117         add_bool( "rtsp-http", 0, NULL,
118                   N_("Tunnel RTSP and RTP over HTTP"),
119                   N_("Tunnel RTSP and RTP over HTTP"), true );
120         add_integer( "rtsp-http-port", 80, NULL,
121                   N_("HTTP tunnel port"),
122                   N_("Port to use for tunneling the RTSP/RTP over HTTP."),
123                   true );
124         add_integer("rtsp-caching", 4 * DEFAULT_PTS_DELAY / 1000, NULL,
125                     CACHING_TEXT, CACHING_LONGTEXT, true );
126         add_bool(   "rtsp-kasenna", false, NULL, KASENNA_TEXT,
127                     KASENNA_LONGTEXT, true );
128         add_string( "rtsp-user", NULL, NULL, USER_TEXT,
129                     USER_LONGTEXT, true );
130         add_string( "rtsp-pwd", NULL, NULL, PASS_TEXT,
131                     PASS_LONGTEXT, true );
132 vlc_module_end();
133
134
135 /*****************************************************************************
136  * Local prototypes
137  *****************************************************************************/
138
139 typedef struct
140 {
141     demux_t         *p_demux;
142     MediaSubsession *sub;
143
144     es_format_t     fmt;
145     es_out_id_t     *p_es;
146
147     bool            b_muxed;
148     bool            b_quicktime;
149     bool            b_asf;
150     stream_t        *p_out_muxed;    /* for muxed stream */
151
152     uint8_t         *p_buffer;
153     unsigned int    i_buffer;
154
155     bool            b_rtcp_sync;
156     char            waiting;
157     int64_t         i_pts;
158     float           i_npt;
159
160 } live_track_t;
161
162 struct timeout_thread_t
163 {
164     demux_sys_t  *p_sys;
165     vlc_thread_t handle;
166     bool         b_handle_keep_alive;
167 };
168
169 struct demux_sys_t
170 {
171     char            *p_sdp;    /* XXX mallocated */
172     char            *psz_path; /* URL-encoded path */
173     vlc_url_t       url;
174
175     MediaSession     *ms;
176     TaskScheduler    *scheduler;
177     UsageEnvironment *env ;
178     RTSPClient       *rtsp;
179
180     /* */
181     int              i_track;
182     live_track_t     **track;   /* XXX mallocated */
183
184     /* Weird formats */
185     asf_header_t     asfh;
186     stream_t         *p_out_asf;
187     bool             b_real;
188
189     /* */
190     int64_t          i_pcr; /* The clock */
191     float            i_npt;
192     float            i_npt_length;
193     float            i_npt_start;
194
195     /* timeout thread information */
196     int              i_timeout;     /* session timeout value in seconds */
197     bool             b_timeout_call;/* mark to send an RTSP call to prevent server timeout */
198     timeout_thread_t *p_timeout;    /* the actual thread that makes sure we don't timeout */
199
200     /* */
201     bool             b_force_mcast;
202     bool             b_multicast;   /* if one of the tracks is multicasted */
203     bool             b_no_data;     /* if we never received any data */
204     int              i_no_data_ti;  /* consecutive number of TaskInterrupt */
205
206     char             event;
207
208     bool             b_get_param;   /* Does the server support GET_PARAMETER */
209 };
210
211 static int Demux  ( demux_t * );
212 static int Control( demux_t *, int, va_list );
213
214 static int Connect      ( demux_t * );
215 static int SessionsSetup( demux_t * );
216 static int Play         ( demux_t *);
217 static int ParseASF     ( demux_t * );
218 static int RollOverTcp  ( demux_t * );
219
220 static void StreamRead  ( void *, unsigned int, unsigned int,
221                           struct timeval, unsigned int );
222 static void StreamClose ( void * );
223 static void TaskInterrupt( void * );
224
225 static void* TimeoutPrevention( void * );
226
227 static unsigned char* parseH264ConfigStr( char const* configStr,
228                                           unsigned int& configSize );
229
230 /*****************************************************************************
231  * DemuxOpen:
232  *****************************************************************************/
233 static int  Open ( vlc_object_t *p_this )
234 {
235     demux_t     *p_demux = (demux_t*)p_this;
236     demux_sys_t *p_sys = NULL;
237
238     MediaSubsessionIterator *iter   = NULL;
239     MediaSubsession         *sub    = NULL;
240     int i, i_return;
241     int i_error = VLC_EGENERIC;
242
243     if( p_demux->s )
244     {
245         /* See if it looks like a SDP
246            v, o, s fields are mandatory and in this order */
247         const uint8_t *p_peek;
248         if( stream_Peek( p_demux->s, &p_peek, 7 ) < 7 ) return VLC_EGENERIC;
249
250         if( memcmp( p_peek, "v=0\r\n", 5 ) &&
251             memcmp( p_peek, "v=0\n", 4 ) &&
252             ( p_peek[0] < 'a' || p_peek[0] > 'z' || p_peek[1] != '=' ) )
253         {
254             return VLC_EGENERIC;
255         }
256     }
257     else
258     {
259         var_Create( p_demux, "rtsp-caching", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
260     }
261
262     p_demux->pf_demux  = Demux;
263     p_demux->pf_control= Control;
264     p_demux->p_sys     = p_sys = (demux_sys_t*)malloc( sizeof( demux_sys_t ) );
265     if( !p_sys ) return VLC_ENOMEM;
266
267     p_sys->p_sdp = NULL;
268     p_sys->scheduler = NULL;
269     p_sys->env = NULL;
270     p_sys->ms = NULL;
271     p_sys->rtsp = NULL;
272     p_sys->i_track = 0;
273     p_sys->track   = NULL;
274     p_sys->i_pcr = 0;
275     p_sys->i_npt = 0.;
276     p_sys->i_npt_start = 0.;
277     p_sys->i_npt_length = 0.;
278     p_sys->p_out_asf = NULL;
279     p_sys->b_no_data = true;
280     p_sys->i_no_data_ti = 0;
281     p_sys->p_timeout = NULL;
282     p_sys->i_timeout = 0;
283     p_sys->b_timeout_call = false;
284     p_sys->b_multicast = false;
285     p_sys->b_real = false;
286     p_sys->psz_path = strdup( p_demux->psz_path );
287     p_sys->b_force_mcast = var_CreateGetBool( p_demux, "rtsp-mcast" );
288     p_sys->b_get_param = false;
289
290     /* parse URL for rtsp://[user:[passwd]@]serverip:port/options */
291     vlc_UrlParse( &p_sys->url, p_sys->psz_path, 0 );
292
293     if( ( p_sys->scheduler = BasicTaskScheduler::createNew() ) == NULL )
294     {
295         msg_Err( p_demux, "BasicTaskScheduler::createNew failed" );
296         goto error;
297     }
298     if( !( p_sys->env = BasicUsageEnvironment::createNew(*p_sys->scheduler) ) )
299     {
300         msg_Err( p_demux, "BasicUsageEnvironment::createNew failed" );
301         goto error;
302     }
303
304     if( strcasecmp( p_demux->psz_access, "sdp" ) )
305     {
306         char *p = p_sys->psz_path;
307         while( (p = strchr( p, ' ' )) != NULL ) *p = '+';
308     }
309
310     if( p_demux->s != NULL )
311     {
312         /* Gather the complete sdp file */
313         int     i_sdp       = 0;
314         int     i_sdp_max   = 1000;
315         uint8_t *p_sdp      = (uint8_t*) malloc( i_sdp_max );
316
317         if( !p_sdp )
318         {
319             i_error = VLC_ENOMEM;
320             goto error;
321         }
322
323         for( ;; )
324         {
325             int i_read = stream_Read( p_demux->s, &p_sdp[i_sdp],
326                                       i_sdp_max - i_sdp - 1 );
327
328             if( !vlc_object_alive (p_demux) || p_demux->b_error )
329             {
330                 free( p_sdp );
331                 goto error;
332             }
333
334             if( i_read < 0 )
335             {
336                 msg_Err( p_demux, "failed to read SDP" );
337                 free( p_sdp );
338                 goto error;
339             }
340
341             i_sdp += i_read;
342
343             if( i_read < i_sdp_max - i_sdp - 1 )
344             {
345                 p_sdp[i_sdp] = '\0';
346                 break;
347             }
348
349             i_sdp_max += 1000;
350             p_sdp = (uint8_t*)realloc( p_sdp, i_sdp_max );
351         }
352         p_sys->p_sdp = (char*)p_sdp;
353     }
354     else if( ( p_demux->s == NULL ) &&
355              !strcasecmp( p_demux->psz_access, "sdp" ) )
356     {
357         /* sdp:// link from SAP */
358         p_sys->p_sdp = strdup( p_sys->psz_path );
359     }
360     else if( ( i_return = Connect( p_demux ) ) != VLC_SUCCESS )
361     {
362         msg_Err( p_demux, "Failed to connect with rtsp://%s", p_sys->psz_path );
363         goto error;
364     }
365
366     if( p_sys->p_sdp == NULL )
367     {
368         msg_Err( p_demux, "Failed to retrieve the RTSP Session Description" );
369         i_error = VLC_ENOMEM;
370         goto error;
371     }
372
373     if( ( i_return = SessionsSetup( p_demux ) ) != VLC_SUCCESS )
374     {
375         msg_Err( p_demux, "Nothing to play for rtsp://%s", p_sys->psz_path );
376         goto error;
377     }
378
379     if( p_sys->b_real ) goto error;
380
381     if( ( i_return = Play( p_demux ) ) != VLC_SUCCESS )
382         goto error;
383
384     if( p_sys->p_out_asf && ParseASF( p_demux ) )
385     {
386         msg_Err( p_demux, "cannot find a usable asf header" );
387         /* TODO Clean tracks */
388         goto error;
389     }
390
391     if( p_sys->i_track <= 0 )
392         goto error;
393
394     return VLC_SUCCESS;
395
396 error:
397     for( i = 0; i < p_sys->i_track; i++ )
398     {
399         live_track_t *tk = p_sys->track[i];
400
401         if( tk->b_muxed ) stream_DemuxDelete( tk->p_out_muxed );
402         es_format_Clean( &tk->fmt );
403         free( tk->p_buffer );
404         free( tk );
405     }
406
407     if( p_sys->i_track ) free( p_sys->track );
408     if( p_sys->p_out_asf ) stream_DemuxDelete( p_sys->p_out_asf );
409     if( p_sys->rtsp && p_sys->ms ) p_sys->rtsp->teardownMediaSession( *p_sys->ms );
410     if( p_sys->ms ) Medium::close( p_sys->ms );
411     if( p_sys->rtsp ) RTSPClient::close( p_sys->rtsp );
412     if( p_sys->env ) p_sys->env->reclaim();
413     if( p_sys->p_timeout )
414     {
415         vlc_cancel( p_sys->p_timeout->handle );
416         vlc_join( p_sys->p_timeout->handle, NULL );
417         free( p_sys->p_timeout );
418     }
419     delete p_sys->scheduler;
420     free( p_sys->p_sdp );
421     free( p_sys->psz_path );
422
423     vlc_UrlClean( &p_sys->url );
424
425     free( p_sys );
426     return i_error;
427 }
428
429 /*****************************************************************************
430  * DemuxClose:
431  *****************************************************************************/
432 static void Close( vlc_object_t *p_this )
433 {
434     demux_t *p_demux = (demux_t*)p_this;
435     demux_sys_t *p_sys = p_demux->p_sys;
436     int i;
437
438     for( i = 0; i < p_sys->i_track; i++ )
439     {
440         live_track_t *tk = p_sys->track[i];
441
442         if( tk->b_muxed ) stream_DemuxDelete( tk->p_out_muxed );
443         es_format_Clean( &tk->fmt );
444         free( tk->p_buffer );
445         free( tk );
446     }
447
448     if( p_sys->i_track ) free( p_sys->track );
449     if( p_sys->p_out_asf ) stream_DemuxDelete( p_sys->p_out_asf );
450     if( p_sys->rtsp && p_sys->ms ) p_sys->rtsp->teardownMediaSession( *p_sys->ms );
451     if( p_sys->ms ) Medium::close( p_sys->ms );
452     if( p_sys->rtsp ) RTSPClient::close( p_sys->rtsp );
453     if( p_sys->env ) p_sys->env->reclaim();
454     if( p_sys->p_timeout )
455     {
456         vlc_cancel( p_sys->p_timeout->handle );
457         vlc_join( p_sys->p_timeout->handle, NULL );
458         free( p_sys->p_timeout );
459     }
460     delete p_sys->scheduler;
461     free( p_sys->p_sdp );
462     free( p_sys->psz_path );
463
464     vlc_UrlClean( &p_sys->url );
465
466     free( p_sys );
467 }
468
469 /*****************************************************************************
470  * Connect: connects to the RTSP server to setup the session DESCRIBE
471  *****************************************************************************/
472 static int Connect( demux_t *p_demux )
473 {
474     demux_sys_t *p_sys = p_demux->p_sys;
475     Authenticator authenticator;
476     bool b_firstpass  = true;
477     char *psz_user    = NULL;
478     char *psz_pwd     = NULL;
479     char *psz_url     = NULL;
480     char *psz_options = NULL;
481     char *p_sdp       = NULL;
482     int  i_http_port  = 0;
483     int  i_ret        = VLC_SUCCESS;
484     int i_lefttries;
485
486     if( p_sys->url.i_port == 0 ) p_sys->url.i_port = 554;
487     if( p_sys->url.psz_username || p_sys->url.psz_password )
488     {
489         int err;
490         err = asprintf( &psz_url, "rtsp://%s:%d%s", p_sys->url.psz_host,
491                         p_sys->url.i_port, p_sys->url.psz_path );
492         if( err == -1 ) return VLC_ENOMEM;
493
494         psz_user = strdup( p_sys->url.psz_username );
495         psz_pwd  = strdup( p_sys->url.psz_password );
496     }
497     else
498     {
499         int err;
500         err = asprintf( &psz_url, "rtsp://%s", p_sys->psz_path );
501         if( err == -1 ) return VLC_ENOMEM;
502
503         psz_user = var_CreateGetString( p_demux, "rtsp-user" );
504         psz_pwd  = var_CreateGetString( p_demux, "rtsp-pwd" );
505     }
506
507     i_lefttries = 3;
508 createnew:
509     i_lefttries--;
510     if( !vlc_object_alive (p_demux) || p_demux->b_error )
511     {
512         free( psz_user );
513         free( psz_pwd );
514         free( psz_url );
515         return VLC_EGENERIC;
516     }
517
518     if( var_CreateGetBool( p_demux, "rtsp-http" ) )
519         i_http_port = var_CreateGetInteger( p_demux, "rtsp-http-port" );
520
521     if( ( p_sys->rtsp = RTSPClient::createNew( *p_sys->env,
522           var_CreateGetInteger( p_demux, "verbose" ) > 1,
523           "VLC media player", i_http_port ) ) == NULL )
524     {
525         msg_Err( p_demux, "RTSPClient::createNew failed (%s)",
526                  p_sys->env->getResultMsg() );
527         free( psz_user );
528         free( psz_pwd );
529         free( psz_url );
530         return VLC_EGENERIC;
531     }
532
533     /* Kasenna enables KeepAlive by analysing the User-Agent string. 
534      * Appending _KA to the string should be enough to enable this feature, 
535      * however, there is a bug where the _KA doesn't get parsed from the 
536      * default User-Agent as created by VLC/Live555 code. This is probably due 
537      * to spaces in the string or the string being too long. Here we override
538      * the default string with a more compact version.
539      */
540     if( var_CreateGetBool( p_demux, "rtsp-kasenna" ))
541     {
542         p_sys->rtsp->setUserAgentString( "VLC_MEDIA_PLAYER_KA" );
543     }
544
545 describe:
546     authenticator.setUsernameAndPassword( (const char*)psz_user,
547                                           (const char*)psz_pwd );
548
549     psz_options = p_sys->rtsp->sendOptionsCmd( psz_url, psz_user, psz_pwd,
550                                                &authenticator );
551     if( psz_options )
552         p_sys->b_get_param = strstr( psz_options, "GET_PARAMETER" ) ? true : false ;
553     delete [] psz_options;
554
555     p_sdp = p_sys->rtsp->describeURL( psz_url, &authenticator,
556                          var_GetBool( p_demux, "rtsp-kasenna" ) );
557     if( p_sdp == NULL )
558     {
559         /* failure occurred */
560         int i_code = 0;
561         const char *psz_error = p_sys->env->getResultMsg();
562
563         if( var_GetBool( p_demux, "rtsp-http" ) )
564             sscanf( psz_error, "%*s %*s HTTP GET %*s HTTP/%*u.%*u %3u %*s",
565                     &i_code );
566         else
567         {
568             const char *psz_tmp = strstr( psz_error, "RTSP" );
569             if( psz_tmp )
570                 sscanf( psz_tmp, "RTSP/%*s%3u", &i_code );
571             else
572                 i_code = 0;
573         }
574         msg_Dbg( p_demux, "DESCRIBE failed with %d: %s", i_code, psz_error );
575
576         if( b_firstpass )
577         {   /* describeURL always returns an "RTSP/1.0 401 Unauthorized" the
578              * first time. This is a workaround to avoid asking for a
579              * user/passwd the first time the code passess here. */
580             i_code = 0;
581             b_firstpass = false;
582         }
583
584         if( i_code == 401 )
585         {
586             int i_result;
587             msg_Dbg( p_demux, "authentication failed" );
588
589             free( psz_user );
590             free( psz_pwd );
591             psz_user = psz_pwd = NULL;
592
593             i_result = intf_UserLoginPassword( p_demux, _("RTSP authentication"),
594                            _("Please enter a valid login name and a password."),
595                                                    &psz_user, &psz_pwd );
596             if( i_result == DIALOG_OK_YES )
597             {
598                 msg_Dbg( p_demux, "retrying with user=%s, pwd=%s",
599                          psz_user, psz_pwd );
600                 goto describe;
601             }
602         }
603         else if( (i_code != 0) && !var_GetBool( p_demux, "rtsp-http" ) )
604         {
605             /* Perhaps a firewall is being annoying. Try HTTP tunneling mode */
606             vlc_value_t val;
607             val.b_bool = true;
608             msg_Dbg( p_demux, "we will now try HTTP tunneling mode" );
609             var_Set( p_demux, "rtsp-http", val );
610             if( p_sys->rtsp ) RTSPClient::close( p_sys->rtsp );
611             p_sys->rtsp = NULL;
612             goto createnew;
613         }
614         else
615         {
616             msg_Dbg( p_demux, "connection timeout, retrying" );
617             if( p_sys->rtsp ) RTSPClient::close( p_sys->rtsp );
618             p_sys->rtsp = NULL;
619             if( i_lefttries > 0 )
620                 goto createnew;
621         }
622         i_ret = VLC_EGENERIC;
623     }
624
625     /* malloc-ated copy */
626     free( psz_url );
627     free( psz_user );
628     free( psz_pwd );
629
630     free( p_sys->p_sdp );
631     p_sys->p_sdp = NULL;
632     if( p_sdp ) p_sys->p_sdp = strdup( (char*)p_sdp );
633     delete[] p_sdp;
634
635     return i_ret;
636 }
637
638 /*****************************************************************************
639  * SessionsSetup: prepares the subsessions and does the SETUP
640  *****************************************************************************/
641 static int SessionsSetup( demux_t *p_demux )
642 {
643     demux_sys_t             *p_sys  = p_demux->p_sys;
644     MediaSubsessionIterator *iter   = NULL;
645     MediaSubsession         *sub    = NULL;
646
647     bool           b_rtsp_tcp = false;
648     int            i_client_port;
649     int            i_return = VLC_SUCCESS;
650     unsigned int   i_buffer = 0;
651     unsigned const thresh = 200000; /* RTP reorder threshold .2 second (default .1) */
652
653     b_rtsp_tcp    = var_CreateGetBool( p_demux, "rtsp-tcp" ) ||
654                     var_GetBool( p_demux, "rtsp-http" );
655     i_client_port = var_CreateGetInteger( p_demux, "rtp-client-port" );
656
657     /* Create the session from the SDP */
658     if( !( p_sys->ms = MediaSession::createNew( *p_sys->env, p_sys->p_sdp ) ) )
659     {
660         msg_Err( p_demux, "Could not create the RTSP Session: %s",
661             p_sys->env->getResultMsg() );
662         return VLC_EGENERIC;
663     }
664
665     /* Initialise each media subsession */
666     iter = new MediaSubsessionIterator( *p_sys->ms );
667     while( ( sub = iter->next() ) != NULL )
668     {
669         Boolean bInit;
670         live_track_t *tk;
671
672         if( !vlc_object_alive (p_demux) || p_demux->b_error )
673         {
674             delete iter;
675             return VLC_EGENERIC;
676         }
677
678         /* Value taken from mplayer */
679         if( !strcmp( sub->mediumName(), "audio" ) )
680             i_buffer = 100000;
681         else if( !strcmp( sub->mediumName(), "video" ) )
682             i_buffer = 2000000;
683         else continue;
684
685         if( i_client_port != -1 )
686         {
687             sub->setClientPortNum( i_client_port );
688             i_client_port += 2;
689         }
690
691         if( strcasestr( sub->codecName(), "REAL" ) )
692         {
693             msg_Info( p_demux, "real codec detected, using real-RTSP instead" );
694             p_sys->b_real = true; /* This is a problem, we'll handle it later */
695             continue;
696         }
697
698         if( !strcmp( sub->codecName(), "X-ASF-PF" ) )
699             bInit = sub->initiate( 4 ); /* Constant ? */
700         else
701             bInit = sub->initiate();
702
703         if( !bInit )
704         {
705             msg_Warn( p_demux, "RTP subsession '%s/%s' failed (%s)",
706                       sub->mediumName(), sub->codecName(),
707                       p_sys->env->getResultMsg() );
708         }
709         else
710         {
711             if( sub->rtpSource() != NULL )
712             {
713                 int fd = sub->rtpSource()->RTPgs()->socketNum();
714
715                 /* Increase the buffer size */
716                 if( i_buffer > 0 )
717                     increaseReceiveBufferTo( *p_sys->env, fd, i_buffer );
718
719                 /* Increase the RTP reorder timebuffer just a bit */
720                 sub->rtpSource()->setPacketReorderingThresholdTime(thresh);
721             }
722             msg_Dbg( p_demux, "RTP subsession '%s/%s'", sub->mediumName(),
723                      sub->codecName() );
724
725             /* Issue the SETUP */
726             if( p_sys->rtsp )
727             {
728                 if( !p_sys->rtsp->setupMediaSubsession( *sub, False,
729                                            b_rtsp_tcp ? True : False,
730                                            ( p_sys->b_force_mcast && !b_rtsp_tcp ) ? True : False ) )
731                 {
732                     /* if we get an unsupported transport error, toggle TCP use and try again */
733                     if( !strstr(p_sys->env->getResultMsg(), "461 Unsupported Transport")
734                      || !p_sys->rtsp->setupMediaSubsession( *sub, False,
735                                            b_rtsp_tcp ? False : True,
736                                            False ) )
737                     {
738                         msg_Err( p_demux, "SETUP of'%s/%s' failed %s", sub->mediumName(),
739                                  sub->codecName(), p_sys->env->getResultMsg() );
740                         continue;
741                     }
742                 }
743             }
744
745             /* Check if we will receive data from this subsession for this track */
746             if( sub->readSource() == NULL ) continue;
747             if( !p_sys->b_multicast )
748             {
749                 /* Check, because we need diff. rollover behaviour for multicast */
750                 p_sys->b_multicast = IsMulticastAddress( sub->connectionEndpointAddress() );
751             }
752
753             tk = (live_track_t*)malloc( sizeof( live_track_t ) );
754             if( !tk )
755             {
756                 delete iter;
757                 return VLC_ENOMEM;
758             }
759             tk->p_demux     = p_demux;
760             tk->sub         = sub;
761             tk->p_es        = NULL;
762             tk->b_quicktime = false;
763             tk->b_asf       = false;
764             tk->b_muxed     = false;
765             tk->p_out_muxed = NULL;
766             tk->waiting     = 0;
767             tk->b_rtcp_sync = false;
768             tk->i_pts       = 0;
769             tk->i_npt       = 0.;
770             tk->i_buffer    = 65536;
771             tk->p_buffer    = (uint8_t *)malloc( 65536 );
772             if( !tk->p_buffer )
773             {
774                 delete iter;
775                 return VLC_ENOMEM;
776             }
777
778             /* Value taken from mplayer */
779             if( !strcmp( sub->mediumName(), "audio" ) )
780             {
781                 es_format_Init( &tk->fmt, AUDIO_ES, VLC_FOURCC('u','n','d','f') );
782                 tk->fmt.audio.i_channels = sub->numChannels();
783                 tk->fmt.audio.i_rate = sub->rtpTimestampFrequency();
784
785                 if( !strcmp( sub->codecName(), "MPA" ) ||
786                     !strcmp( sub->codecName(), "MPA-ROBUST" ) ||
787                     !strcmp( sub->codecName(), "X-MP3-DRAFT-00" ) )
788                 {
789                     tk->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'a' );
790                     tk->fmt.audio.i_rate = 0;
791                 }
792                 else if( !strcmp( sub->codecName(), "AC3" ) )
793                 {
794                     tk->fmt.i_codec = VLC_FOURCC( 'a', '5', '2', ' ' );
795                     tk->fmt.audio.i_rate = 0;
796                 }
797                 else if( !strcmp( sub->codecName(), "L16" ) )
798                 {
799                     tk->fmt.i_codec = VLC_FOURCC( 't', 'w', 'o', 's' );
800                     tk->fmt.audio.i_bitspersample = 16;
801                 }
802                 else if( !strcmp( sub->codecName(), "L8" ) )
803                 {
804                     tk->fmt.i_codec = VLC_FOURCC( 'a', 'r', 'a', 'w' );
805                     tk->fmt.audio.i_bitspersample = 8;
806                 }
807                 else if( !strcmp( sub->codecName(), "PCMU" ) )
808                 {
809                     tk->fmt.i_codec = VLC_FOURCC( 'u', 'l', 'a', 'w' );
810                 }
811                 else if( !strcmp( sub->codecName(), "PCMA" ) )
812                 {
813                     tk->fmt.i_codec = VLC_FOURCC( 'a', 'l', 'a', 'w' );
814                 }
815                 else if( !strncmp( sub->codecName(), "G726", 4 ) )
816                 {
817                     tk->fmt.i_codec = VLC_FOURCC( 'g', '7', '2', '6' );
818                     tk->fmt.audio.i_rate = 8000;
819                     tk->fmt.audio.i_channels = 1;
820                     if( !strcmp( sub->codecName()+5, "40" ) )
821                         tk->fmt.i_bitrate = 40000;
822                     else if( !strcmp( sub->codecName()+5, "32" ) )
823                         tk->fmt.i_bitrate = 32000;
824                     else if( !strcmp( sub->codecName()+5, "24" ) )
825                         tk->fmt.i_bitrate = 24000;
826                     else if( !strcmp( sub->codecName()+5, "16" ) )
827                         tk->fmt.i_bitrate = 16000;
828                 }
829                 else if( !strcmp( sub->codecName(), "AMR" ) )
830                 {
831                     tk->fmt.i_codec = VLC_FOURCC( 's', 'a', 'm', 'r' );
832                 }
833                 else if( !strcmp( sub->codecName(), "AMR-WB" ) )
834                 {
835                     tk->fmt.i_codec = VLC_FOURCC( 's', 'a', 'w', 'b' );
836                 }
837                 else if( !strcmp( sub->codecName(), "MP4A-LATM" ) )
838                 {
839                     unsigned int i_extra;
840                     uint8_t      *p_extra;
841
842                     tk->fmt.i_codec = VLC_FOURCC( 'm', 'p', '4', 'a' );
843
844                     if( ( p_extra = parseStreamMuxConfigStr( sub->fmtp_config(),
845                                                              i_extra ) ) )
846                     {
847                         tk->fmt.i_extra = i_extra;
848                         tk->fmt.p_extra = malloc( i_extra );
849                         memcpy( tk->fmt.p_extra, p_extra, i_extra );
850                         delete[] p_extra;
851                     }
852                     /* Because the "faad" decoder does not handle the LATM data length field
853                        at the start of each returned LATM frame, tell the RTP source to omit it. */
854                     ((MPEG4LATMAudioRTPSource*)sub->rtpSource())->omitLATMDataLengthField();
855                 }
856                 else if( !strcmp( sub->codecName(), "MPEG4-GENERIC" ) )
857                 {
858                     unsigned int i_extra;
859                     uint8_t      *p_extra;
860
861                     tk->fmt.i_codec = VLC_FOURCC( 'm', 'p', '4', 'a' );
862
863                     if( ( p_extra = parseGeneralConfigStr( sub->fmtp_config(),
864                                                            i_extra ) ) )
865                     {
866                         tk->fmt.i_extra = i_extra;
867                         tk->fmt.p_extra = malloc( i_extra );
868                         memcpy( tk->fmt.p_extra, p_extra, i_extra );
869                         delete[] p_extra;
870                     }
871                 }
872                 else if( !strcmp( sub->codecName(), "X-ASF-PF" ) )
873                 {
874                     tk->b_asf = true;
875                     if( p_sys->p_out_asf == NULL )
876                         p_sys->p_out_asf = stream_DemuxNew( p_demux, "asf",
877                                                             p_demux->out );
878                 }
879                 else if( !strcmp( sub->codecName(), "X-QT" ) ||
880                          !strcmp( sub->codecName(), "X-QUICKTIME" ) )
881                 {
882                     tk->b_quicktime = true;
883                 }
884                 else if( !strcmp( sub->codecName(), "SPEEX" ) )
885                 {
886                     tk->fmt.i_codec = VLC_FOURCC( 's', 'p', 'x', 'r' );
887                     if ( sub->rtpTimestampFrequency() )
888                         tk->fmt.audio.i_rate = sub->rtpTimestampFrequency();
889                     else
890                     {
891                         msg_Warn( p_demux,"Using 8kHz as default sample rate." );
892                         tk->fmt.audio.i_rate = 8000;
893                     }
894                 }
895             }
896             else if( !strcmp( sub->mediumName(), "video" ) )
897             {
898                 es_format_Init( &tk->fmt, VIDEO_ES, VLC_FOURCC('u','n','d','f') );
899                 if( !strcmp( sub->codecName(), "MPV" ) )
900                 {
901                     tk->fmt.i_codec = VLC_FOURCC( 'm', 'p', 'g', 'v' );
902                 }
903                 else if( !strcmp( sub->codecName(), "H263" ) ||
904                          !strcmp( sub->codecName(), "H263-1998" ) ||
905                          !strcmp( sub->codecName(), "H263-2000" ) )
906                 {
907                     tk->fmt.i_codec = VLC_FOURCC( 'H', '2', '6', '3' );
908                 }
909                 else if( !strcmp( sub->codecName(), "H261" ) )
910                 {
911                     tk->fmt.i_codec = VLC_FOURCC( 'H', '2', '6', '1' );
912                 }
913                 else if( !strcmp( sub->codecName(), "H264" ) )
914                 {
915                     unsigned int i_extra = 0;
916                     uint8_t      *p_extra = NULL;
917
918                     tk->fmt.i_codec = VLC_FOURCC( 'h', '2', '6', '4' );
919                     tk->fmt.b_packetized = false;
920
921                     if((p_extra=parseH264ConfigStr( sub->fmtp_spropparametersets(),
922                                                     i_extra ) ) )
923                     {
924                         tk->fmt.i_extra = i_extra;
925                         tk->fmt.p_extra = malloc( i_extra );
926                         memcpy( tk->fmt.p_extra, p_extra, i_extra );
927
928                         delete[] p_extra;
929                     }
930                 }
931                 else if( !strcmp( sub->codecName(), "JPEG" ) )
932                 {
933                     tk->fmt.i_codec = VLC_FOURCC( 'M', 'J', 'P', 'G' );
934                 }
935                 else if( !strcmp( sub->codecName(), "MP4V-ES" ) )
936                 {
937                     unsigned int i_extra;
938                     uint8_t      *p_extra;
939
940                     tk->fmt.i_codec = VLC_FOURCC( 'm', 'p', '4', 'v' );
941
942                     if( ( p_extra = parseGeneralConfigStr( sub->fmtp_config(),
943                                                            i_extra ) ) )
944                     {
945                         tk->fmt.i_extra = i_extra;
946                         tk->fmt.p_extra = malloc( i_extra );
947                         memcpy( tk->fmt.p_extra, p_extra, i_extra );
948                         delete[] p_extra;
949                     }
950                 }
951                 else if( !strcmp( sub->codecName(), "X-QT" ) ||
952                          !strcmp( sub->codecName(), "X-QUICKTIME" ) ||
953                          !strcmp( sub->codecName(), "X-QDM" ) ||
954                          !strcmp( sub->codecName(), "X-SV3V-ES" )  ||
955                          !strcmp( sub->codecName(), "X-SORENSONVIDEO" ) )
956                 {
957                     tk->b_quicktime = true;
958                 }
959                 else if( !strcmp( sub->codecName(), "MP2T" ) )
960                 {
961                     tk->b_muxed = true;
962                     tk->p_out_muxed = stream_DemuxNew( p_demux, "ts", p_demux->out );
963                 }
964                 else if( !strcmp( sub->codecName(), "MP2P" ) ||
965                          !strcmp( sub->codecName(), "MP1S" ) )
966                 {
967                     tk->b_muxed = true;
968                     tk->p_out_muxed = stream_DemuxNew( p_demux, "ps",
969                                                        p_demux->out );
970                 }
971                 else if( !strcmp( sub->codecName(), "X-ASF-PF" ) )
972                 {
973                     tk->b_asf = true;
974                     if( p_sys->p_out_asf == NULL )
975                         p_sys->p_out_asf = stream_DemuxNew( p_demux, "asf",
976                                                             p_demux->out );;
977                 }
978             }
979
980             if( !tk->b_quicktime && !tk->b_muxed && !tk->b_asf )
981             {
982                 tk->p_es = es_out_Add( p_demux->out, &tk->fmt );
983             }
984
985             if( sub->rtcpInstance() != NULL )
986             {
987                 sub->rtcpInstance()->setByeHandler( StreamClose, tk );
988             }
989
990             if( tk->p_es || tk->b_quicktime || tk->b_muxed || tk->b_asf )
991             {
992                 /* Append */
993                 p_sys->track = (live_track_t**)realloc( p_sys->track, sizeof( live_track_t ) * ( p_sys->i_track + 1 ) );
994                 p_sys->track[p_sys->i_track++] = tk;
995             }
996             else
997             {
998                 /* BUG ??? */
999                 msg_Err( p_demux, "unusable RTSP track. this should not happen" );
1000                 es_format_Clean( &tk->fmt );
1001                 free( tk );
1002             }
1003         }
1004     }
1005     delete iter;
1006     if( p_sys->i_track <= 0 ) i_return = VLC_EGENERIC;
1007
1008     /* Retrieve the starttime if possible */
1009     p_sys->i_npt_start = p_sys->ms->playStartTime();
1010
1011     /* Retrieve the duration if possible */
1012     p_sys->i_npt_length = p_sys->ms->playEndTime();
1013
1014     msg_Dbg( p_demux, "setup start: %f stop:%f", p_sys->i_npt_start, p_sys->i_npt_length );
1015     return i_return;
1016 }
1017
1018 /*****************************************************************************
1019  * Play: starts the actual playback of the stream
1020  *****************************************************************************/
1021 static int Play( demux_t *p_demux )
1022 {
1023     demux_sys_t *p_sys = p_demux->p_sys;
1024     int i;
1025
1026     if( p_sys->rtsp )
1027     {
1028         /* The PLAY */
1029         if( !p_sys->rtsp->playMediaSession( *p_sys->ms, p_sys->i_npt_start, -1, 1 ) )
1030         {
1031             msg_Err( p_demux, "RTSP PLAY failed %s", p_sys->env->getResultMsg() );
1032             return VLC_EGENERIC;
1033         }
1034
1035         /* Retrieve the timeout value and set up a timeout prevention thread */
1036         p_sys->i_timeout = p_sys->rtsp->sessionTimeoutParameter();
1037         if( p_sys->i_timeout <= 0 )
1038             p_sys->i_timeout = 60; /* default value from RFC2326 */
1039
1040         /* start timeout-thread only if GET_PARAMETER is supported by the server */
1041         if( !p_sys->p_timeout && p_sys->b_get_param )
1042         {
1043             msg_Dbg( p_demux, "We have a timeout of %d seconds",  p_sys->i_timeout );
1044             p_sys->p_timeout = (timeout_thread_t *)malloc( sizeof(timeout_thread_t) );
1045             p_sys->p_timeout->p_sys = p_demux->p_sys; /* lol, object recursion :D */
1046             if( vlc_clone( &p_sys->p_timeout->handle,  TimeoutPrevention,
1047                            p_sys->p_timeout, VLC_THREAD_PRIORITY_LOW ) )
1048             {
1049                 msg_Err( p_demux, "cannot spawn liveMedia timeout thread" );
1050                 free( p_sys->p_timeout );
1051                 p_sys->p_timeout = NULL;
1052             }
1053             msg_Dbg( p_demux, "spawned timeout thread" );
1054         }
1055     }
1056     p_sys->i_pcr = 0;
1057
1058     /* Retrieve the starttime if possible */
1059     p_sys->i_npt_start = p_sys->ms->playStartTime();
1060     p_sys->i_npt_length = p_sys->ms->playEndTime();
1061
1062     msg_Dbg( p_demux, "play start: %f stop:%f", p_sys->i_npt_start, p_sys->i_npt_length );
1063     return VLC_SUCCESS;
1064 }
1065
1066
1067 /*****************************************************************************
1068  * Demux:
1069  *****************************************************************************/
1070 static int Demux( demux_t *p_demux )
1071 {
1072     demux_sys_t    *p_sys = p_demux->p_sys;
1073     TaskToken      task;
1074
1075     bool            b_send_pcr = true;
1076     int64_t         i_pcr = 0;
1077     int             i;
1078
1079     /* Check if we need to send the server a Keep-A-Live signal */
1080     if( p_sys->b_timeout_call && p_sys->rtsp && p_sys->ms )
1081     {
1082         char *psz_bye = NULL;
1083         p_sys->rtsp->getMediaSessionParameter( *p_sys->ms, NULL, psz_bye );
1084         p_sys->b_timeout_call = false;
1085     }
1086
1087     for( i = 0; i < p_sys->i_track; i++ )
1088     {
1089         live_track_t *tk = p_sys->track[i];
1090
1091         if( tk->b_asf || tk->b_muxed )
1092             b_send_pcr = false;
1093 #if 0
1094         if( i_pcr == 0 )
1095         {
1096             i_pcr = tk->i_pts;
1097         }
1098         else if( tk->i_pts != 0 && i_pcr > tk->i_pts )
1099         {
1100             i_pcr = tk->i_pts ;
1101         }
1102 #endif
1103     }
1104     if( p_sys->i_pcr > 0 )
1105     {
1106         if( b_send_pcr )
1107             es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr );
1108     }
1109
1110     /* First warn we want to read data */
1111     p_sys->event = 0;
1112     for( i = 0; i < p_sys->i_track; i++ )
1113     {
1114         live_track_t *tk = p_sys->track[i];
1115
1116         if( tk->waiting == 0 )
1117         {
1118             tk->waiting = 1;
1119             tk->sub->readSource()->getNextFrame( tk->p_buffer, tk->i_buffer,
1120                                           StreamRead, tk, StreamClose, tk );
1121         }
1122     }
1123     /* Create a task that will be called if we wait more than 300ms */
1124     task = p_sys->scheduler->scheduleDelayedTask( 300000, TaskInterrupt, p_demux );
1125
1126     /* Do the read */
1127     p_sys->scheduler->doEventLoop( &p_sys->event );
1128
1129     /* remove the task */
1130     p_sys->scheduler->unscheduleDelayedTask( task );
1131
1132     /* Check for gap in pts value */
1133     for( i = 0; i < p_sys->i_track; i++ )
1134     {
1135         live_track_t *tk = p_sys->track[i];
1136
1137         if( !tk->b_muxed && !tk->b_rtcp_sync &&
1138             tk->sub->rtpSource() && tk->sub->rtpSource()->hasBeenSynchronizedUsingRTCP() )
1139         {
1140             msg_Dbg( p_demux, "tk->rtpSource->hasBeenSynchronizedUsingRTCP()" );
1141
1142             es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
1143             tk->b_rtcp_sync = true;
1144             /* reset PCR */
1145             tk->i_pts = 0;
1146             tk->i_npt = 0.;
1147             p_sys->i_pcr = 0;
1148             p_sys->i_npt = 0.;
1149             i_pcr = 0;
1150         }
1151     }
1152
1153     if( p_sys->b_multicast && p_sys->b_no_data &&
1154         ( p_sys->i_no_data_ti > 120 ) )
1155     {
1156         /* FIXME Make this configurable
1157         msg_Err( p_demux, "no multicast data received in 36s, aborting" );
1158         return 0;
1159         */
1160     }
1161     else if( !p_sys->b_multicast && p_sys->b_no_data &&
1162              ( p_sys->i_no_data_ti > 34 ) )
1163     {
1164         bool b_rtsp_tcp = var_GetBool( p_demux, "rtsp-tcp" ) ||
1165                                 var_GetBool( p_demux, "rtsp-http" );
1166
1167         if( !b_rtsp_tcp && p_sys->rtsp && p_sys->ms )
1168         {
1169             msg_Warn( p_demux, "no data received in 10s. Switching to TCP" );
1170             if( RollOverTcp( p_demux ) )
1171             {
1172                 msg_Err( p_demux, "TCP rollover failed, aborting" );
1173                 return 0;
1174             }
1175             return 1;
1176         }
1177         msg_Err( p_demux, "no data received in 10s, aborting" );
1178         return 0;
1179     }
1180     else if( !p_sys->b_multicast && p_sys->i_no_data_ti > 34 )
1181     {
1182         /* EOF ? */
1183         msg_Warn( p_demux, "no data received in 10s, eof ?" );
1184         return 0;
1185     }
1186     return p_demux->b_error ? 0 : 1;
1187 }
1188
1189 /*****************************************************************************
1190  * Control:
1191  *****************************************************************************/
1192 static int Control( demux_t *p_demux, int i_query, va_list args )
1193 {
1194     demux_sys_t *p_sys = p_demux->p_sys;
1195     int64_t *pi64, i64;
1196     double  *pf, f;
1197     bool *pb, *pb2, b_bool;
1198     int *pi_int;
1199
1200     switch( i_query )
1201     {
1202         case DEMUX_GET_TIME:
1203             pi64 = (int64_t*)va_arg( args, int64_t * );
1204             if( p_sys->i_npt > 0 )
1205             {
1206                 *pi64 = (int64_t)(p_sys->i_npt * 1000000.);
1207                 return VLC_SUCCESS;
1208             }
1209             return VLC_EGENERIC;
1210
1211         case DEMUX_GET_LENGTH:
1212             pi64 = (int64_t*)va_arg( args, int64_t * );
1213             if( p_sys->i_npt_length > 0 )
1214             {
1215                 *pi64 = p_sys->i_npt_length * 1000000.0;
1216                 return VLC_SUCCESS;
1217             }
1218             return VLC_EGENERIC;
1219
1220         case DEMUX_GET_POSITION:
1221             pf = (double*)va_arg( args, double* );
1222             if( p_sys->i_npt_length > 0 && p_sys->i_npt > 0)
1223             {
1224                 *pf = ( (double)p_sys->i_npt / (double)p_sys->i_npt_length );
1225                 return VLC_SUCCESS;
1226             }
1227             return VLC_EGENERIC;
1228
1229         case DEMUX_SET_POSITION:
1230         case DEMUX_SET_TIME:
1231             if( p_sys->rtsp && p_sys->i_npt_length > 0 )
1232             {
1233                 int i;
1234                 float time;
1235
1236                 if( i_query == DEMUX_SET_TIME && p_sys->i_npt > 0 )
1237                 {
1238                     i64 = (int64_t)va_arg( args, int64_t );
1239                     time = (float)((double)i64 / (double)1000000.0); /* in second */
1240                 }
1241                 else if( i_query == DEMUX_SET_TIME )
1242                     return VLC_EGENERIC;
1243                 else
1244                 {
1245                     f = (double)va_arg( args, double );
1246                     time = f * (double)p_sys->i_npt_length;   /* in second */
1247                 }
1248
1249                 if( !p_sys->rtsp->playMediaSession( *p_sys->ms, time, -1, 1 ) )
1250                 {
1251                     msg_Err( p_demux, "PLAY failed %s",
1252                         p_sys->env->getResultMsg() );
1253                     return VLC_EGENERIC;
1254                 }
1255                 es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
1256                 p_sys->i_pcr = 0;
1257
1258                 /* Retrieve RTP-Info values */
1259                 for( i = 0; i < p_sys->i_track; i++ )
1260                 {
1261                     p_sys->track[i]->b_rtcp_sync = false;
1262                     p_sys->track[i]->i_pts = 0;
1263                 }
1264
1265                 /* Retrieve the starttime if possible */
1266                 p_sys->i_npt = p_sys->i_npt_start = p_sys->ms->playStartTime();
1267
1268                 /* Retrieve the duration if possible */
1269                 p_sys->i_npt_length = p_sys->ms->playEndTime();
1270
1271                 msg_Dbg( p_demux, "seek start: %f stop:%f", p_sys->i_npt_start, p_sys->i_npt_length );
1272                 return VLC_SUCCESS;
1273             }
1274             return VLC_EGENERIC;
1275
1276         /* Special for access_demux */
1277         case DEMUX_CAN_PAUSE:
1278         case DEMUX_CAN_SEEK:
1279             pb = (bool*)va_arg( args, bool * );
1280             if( p_sys->rtsp && p_sys->i_npt_length > 0 )
1281                 /* Not always true, but will be handled in SET_PAUSE_STATE */
1282                 *pb = true;
1283             else
1284                 *pb = false;
1285             return VLC_SUCCESS;
1286
1287         case DEMUX_CAN_CONTROL_PACE:
1288             pb = (bool*)va_arg( args, bool * );
1289
1290 #if 1       /* Disable for now until we have a clock synchro algo
1291              * which works with something else than MPEG over UDP */
1292             *pb = false;
1293 #else
1294             *pb = true;
1295 #endif
1296             return VLC_SUCCESS;
1297
1298 #if 0
1299         case DEMUX_CAN_CONTROL_RATE:
1300             pb = (bool*)va_arg( args, bool * );
1301             pb2 = (bool*)va_arg( args, bool * );
1302
1303             *pb = p_sys->rtsp != NULL && p_sys->i_npt_length > 0 && !var_GetBool( p_demux, "rtsp-kasenna" );
1304             *pb2 = false;
1305             return VLC_SUCCESS;
1306
1307         case DEMUX_SET_RATE:
1308         {
1309             double f_scale;
1310
1311             if( !p_sys->rtsp || p_sys->i_npt_length <= 0 || var_GetBool( p_demux, "rtsp-kasenna" ) )
1312                 return VLC_EGENERIC;
1313
1314             /* TODO we might want to ensure that the new rate is different from
1315              * old rate after playMediaSession...
1316              * I have no idea how the server map the requested rate to the
1317              * ones it supports.
1318              * ex:
1319              *  current is x2 we request x1.5 if the server return x2 we will
1320              *  never succeed to return to x1.
1321              *  In this case we should retry with a lower rate until we have
1322              *  one (even x1).
1323              */
1324
1325             pi_int = (int*)va_arg( args, int * );
1326             f_scale = (double)INPUT_RATE_DEFAULT / (*p_int);
1327
1328             /* Passing -1 for the start and end time will mean liveMedia won't
1329             * create a Range: section for the RTSP message. The server should
1330             * pick up from the current position */
1331             if( !p_sys->rtsp->playMediaSession( *p_sys->ms, -1, -1, f_scale ) )
1332             {
1333                 msg_Err( p_demux, "PLAY with Scale %0.2f failed %s", f_scale,
1334                         p_sys->env->getResultMsg() );
1335                 return VLC_EGENERIC;
1336             }
1337             /* ReSync the stream */
1338             p_sys->i_npt_start = 0;
1339             p_sys->i_pcr = 0;
1340             p_sys->i_npt = 0.;
1341             es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
1342
1343             *pi_int = (int)( INPUT_RATE_DEFAULT / p_sys->ms->scale() + 0.5 );
1344             return VLC_SUCCESS;
1345         }
1346 #endif
1347
1348         case DEMUX_SET_PAUSE_STATE:
1349         {
1350             int i;
1351
1352             b_bool = (bool)va_arg( args, int );
1353             if( p_sys->rtsp == NULL )
1354                 return VLC_EGENERIC;
1355
1356             /* FIXME */
1357             if( ( b_bool && !p_sys->rtsp->pauseMediaSession( *p_sys->ms ) ) ||
1358                     ( !b_bool && !p_sys->rtsp->playMediaSession( *p_sys->ms,
1359                        -1 ) ) )
1360             {
1361                     msg_Err( p_demux, "PLAY or PAUSE failed %s", p_sys->env->getResultMsg() );
1362                     return VLC_EGENERIC;
1363             }
1364
1365             /* When we Pause, we'll need the TimeoutPrevention thread to
1366              * handle sending the "Keep Alive" message to the server. 
1367              * Unfortunately Live555 isn't thread safe and so can't 
1368              * do this normally while the main Demux thread is handling
1369              * a live stream. We end up with the Timeout thread blocking
1370              * waiting for a response from the server. So when we PAUSE
1371              * we set a flag that the TimeoutPrevention function will check
1372              * and if it's set, it will trigger the GET_PARAMETER message */
1373             if( b_bool && p_sys->p_timeout != NULL )
1374                 p_sys->p_timeout->b_handle_keep_alive = true;
1375             else if( !b_bool && p_sys->p_timeout != NULL ) 
1376                 p_sys->p_timeout->b_handle_keep_alive = false;
1377
1378             for( i = 0; !b_bool && i < p_sys->i_track; i++ )
1379             {
1380                 live_track_t *tk = p_sys->track[i];
1381                 tk->b_rtcp_sync = false;
1382                 tk->i_pts = 0;
1383                 p_sys->i_pcr = 0;
1384                 es_out_Control( p_demux->out, ES_OUT_RESET_PCR );
1385             }
1386
1387             /* Retrieve the starttime if possible */
1388             p_sys->i_npt = p_sys->i_npt_start = p_sys->ms->playStartTime();
1389
1390             /* Retrieve the duration if possible */
1391             p_sys->i_npt_length = p_sys->ms->playEndTime();
1392
1393             msg_Dbg( p_demux, "pause start: %f stop:%f", p_sys->i_npt_start, p_sys->i_npt_length );
1394             return VLC_SUCCESS;
1395         }
1396         case DEMUX_GET_TITLE_INFO:
1397         case DEMUX_SET_TITLE:
1398         case DEMUX_SET_SEEKPOINT:
1399             return VLC_EGENERIC;
1400
1401         case DEMUX_GET_PTS_DELAY:
1402             pi64 = (int64_t*)va_arg( args, int64_t * );
1403             *pi64 = (int64_t)var_GetInteger( p_demux, "rtsp-caching" ) * 1000;
1404             return VLC_SUCCESS;
1405
1406         default:
1407             return VLC_EGENERIC;
1408     }
1409 }
1410
1411 /*****************************************************************************
1412  * RollOverTcp: reopen the rtsp into TCP mode
1413  * XXX: ugly, a lot of code are duplicated from Open()
1414  * This should REALLY be fixed
1415  *****************************************************************************/
1416 static int RollOverTcp( demux_t *p_demux )
1417 {
1418     demux_sys_t *p_sys = p_demux->p_sys;
1419     int i, i_return;
1420
1421     var_SetBool( p_demux, "rtsp-tcp", true );
1422
1423     /* We close the old RTSP session */
1424     for( i = 0; i < p_sys->i_track; i++ )
1425     {
1426         live_track_t *tk = p_sys->track[i];
1427
1428         if( tk->b_muxed ) stream_DemuxDelete( tk->p_out_muxed );
1429         if( tk->p_es ) es_out_Del( p_demux->out, tk->p_es );
1430         es_format_Clean( &tk->fmt );
1431         free( tk->p_buffer );
1432         free( tk );
1433     }
1434     if( p_sys->i_track ) free( p_sys->track );
1435     if( p_sys->p_out_asf ) stream_DemuxDelete( p_sys->p_out_asf );
1436
1437     p_sys->rtsp->teardownMediaSession( *p_sys->ms );
1438     Medium::close( p_sys->ms );
1439     RTSPClient::close( p_sys->rtsp );
1440
1441     p_sys->ms = NULL;
1442     p_sys->rtsp = NULL;
1443     p_sys->track = NULL;
1444     p_sys->i_track = 0;
1445
1446     /* Reopen rtsp client */
1447     if( ( i_return = Connect( p_demux ) ) != VLC_SUCCESS )
1448     {
1449         msg_Err( p_demux, "Failed to connect with rtsp://%s",
1450                  p_sys->psz_path );
1451         goto error;
1452     }
1453
1454     if( p_sys->p_sdp == NULL )
1455     {
1456         msg_Err( p_demux, "Failed to retrieve the RTSP Session Description" );
1457         goto error;
1458     }
1459
1460     if( ( i_return = SessionsSetup( p_demux ) ) != VLC_SUCCESS )
1461     {
1462         msg_Err( p_demux, "Nothing to play for rtsp://%s", p_sys->psz_path );
1463         goto error;
1464     }
1465
1466     if( ( i_return = Play( p_demux ) ) != VLC_SUCCESS )
1467         goto error;
1468
1469     return VLC_SUCCESS;
1470
1471 error:
1472     return VLC_EGENERIC;
1473 }
1474
1475
1476 /*****************************************************************************
1477  *
1478  *****************************************************************************/
1479 static void StreamRead( void *p_private, unsigned int i_size,
1480                         unsigned int i_truncated_bytes, struct timeval pts,
1481                         unsigned int duration )
1482 {
1483     live_track_t   *tk = (live_track_t*)p_private;
1484     demux_t        *p_demux = tk->p_demux;
1485     demux_sys_t    *p_sys = p_demux->p_sys;
1486     block_t        *p_block;
1487
1488     //msg_Dbg( p_demux, "pts: %d", pts.tv_sec );
1489
1490     int64_t i_pts = (int64_t)pts.tv_sec * INT64_C(1000000) +
1491         (int64_t)pts.tv_usec;
1492
1493     /* XXX Beurk beurk beurk Avoid having negative value XXX */
1494     i_pts &= INT64_C(0x00ffffffffffffff);
1495
1496     /* Retrieve NPT for this pts */
1497     tk->i_npt = tk->sub->getNormalPlayTime(pts);
1498
1499     if( tk->b_quicktime && tk->p_es == NULL )
1500     {
1501         QuickTimeGenericRTPSource *qtRTPSource =
1502             (QuickTimeGenericRTPSource*)tk->sub->rtpSource();
1503         QuickTimeGenericRTPSource::QTState &qtState = qtRTPSource->qtState;
1504         uint8_t *sdAtom = (uint8_t*)&qtState.sdAtom[4];
1505
1506         if( tk->fmt.i_cat == VIDEO_ES ) {
1507             if( qtState.sdAtomSize < 16 + 32 )
1508             {
1509                 /* invalid */
1510                 p_sys->event = 0xff;
1511                 tk->waiting = 0;
1512                 return;
1513             }
1514             tk->fmt.i_codec = VLC_FOURCC(sdAtom[0],sdAtom[1],sdAtom[2],sdAtom[3]);
1515             tk->fmt.video.i_width  = (sdAtom[28] << 8) | sdAtom[29];
1516             tk->fmt.video.i_height = (sdAtom[30] << 8) | sdAtom[31];
1517
1518             if( tk->fmt.i_codec == VLC_FOURCC('a', 'v', 'c', '1') )
1519             {
1520                 uint8_t *pos = (uint8_t*)qtRTPSource->qtState.sdAtom + 86;
1521                 uint8_t *endpos = (uint8_t*)qtRTPSource->qtState.sdAtom
1522                                   + qtRTPSource->qtState.sdAtomSize;
1523                 while (pos+8 < endpos) {
1524                     unsigned int atomLength = pos[0]<<24 | pos[1]<<16 | pos[2]<<8 | pos[3];
1525                     if( atomLength == 0 || atomLength > (unsigned int)(endpos-pos)) break;
1526                     if( memcmp(pos+4, "avcC", 4) == 0 &&
1527                         atomLength > 8 &&
1528                         atomLength <= INT_MAX )
1529                     {
1530                         tk->fmt.i_extra = atomLength-8;
1531                         tk->fmt.p_extra = malloc( tk->fmt.i_extra );
1532                         memcpy(tk->fmt.p_extra, pos+8, atomLength-8);
1533                         break;
1534                     }
1535                     pos += atomLength;
1536                 }
1537             }
1538             else
1539             {
1540                 tk->fmt.i_extra        = qtState.sdAtomSize - 16;
1541                 tk->fmt.p_extra        = malloc( tk->fmt.i_extra );
1542                 memcpy( tk->fmt.p_extra, &sdAtom[12], tk->fmt.i_extra );
1543             }
1544         }
1545         else {
1546             if( qtState.sdAtomSize < 4 )
1547             {
1548                 /* invalid */
1549                 p_sys->event = 0xff;
1550                 tk->waiting = 0;
1551                 return;
1552             }
1553             tk->fmt.i_codec = VLC_FOURCC(sdAtom[0],sdAtom[1],sdAtom[2],sdAtom[3]);
1554         }
1555         tk->p_es = es_out_Add( p_demux->out, &tk->fmt );
1556     }
1557
1558 #if 0
1559     fprintf( stderr, "StreamRead size=%d pts=%lld\n",
1560              i_size,
1561              pts.tv_sec * 1000000LL + pts.tv_usec );
1562 #endif
1563
1564     /* grow buffer if it looks like buffer is too small, but don't eat
1565      * up all the memory on strange streams */
1566     if( i_truncated_bytes > 0 && tk->i_buffer < 2000000 )
1567     {
1568         void *p_tmp;
1569         msg_Dbg( p_demux, "lost %d bytes", i_truncated_bytes );
1570         msg_Dbg( p_demux, "increasing buffer size to %d", tk->i_buffer * 2 );
1571         tk->i_buffer *= 2;
1572         p_tmp = realloc( tk->p_buffer, tk->i_buffer );
1573         if( p_tmp == NULL )
1574         {
1575             msg_Warn( p_demux, "realloc failed" );
1576         }
1577         else
1578         {
1579             tk->p_buffer = (uint8_t*)p_tmp;
1580         }
1581     }
1582     if( i_size > tk->i_buffer )
1583     {
1584         msg_Warn( p_demux, "buffer overflow" );
1585     }
1586     /* FIXME could i_size be > buffer size ? */
1587     if( tk->fmt.i_codec == VLC_FOURCC('s','a','m','r') ||
1588         tk->fmt.i_codec == VLC_FOURCC('s','a','w','b') )
1589     {
1590         AMRAudioSource *amrSource = (AMRAudioSource*)tk->sub->readSource();
1591
1592         p_block = block_New( p_demux, i_size + 1 );
1593         p_block->p_buffer[0] = amrSource->lastFrameHeader();
1594         memcpy( p_block->p_buffer + 1, tk->p_buffer, i_size );
1595     }
1596     else if( tk->fmt.i_codec == VLC_FOURCC('H','2','6','1') )
1597     {
1598         H261VideoRTPSource *h261Source = (H261VideoRTPSource*)tk->sub->rtpSource();
1599         uint32_t header = h261Source->lastSpecialHeader();
1600         p_block = block_New( p_demux, i_size + 4 );
1601         memcpy( p_block->p_buffer, &header, 4 );
1602         memcpy( p_block->p_buffer + 4, tk->p_buffer, i_size );
1603
1604         if( tk->sub->rtpSource()->curPacketMarkerBit() )
1605             p_block->i_flags |= BLOCK_FLAG_END_OF_FRAME;
1606     }
1607     else if( tk->fmt.i_codec == VLC_FOURCC('h','2','6','4') )
1608     {
1609         if( (tk->p_buffer[0] & 0x1f) >= 24 )
1610             msg_Warn( p_demux, "unsupported NAL type for H264" );
1611
1612         /* Normal NAL type */
1613         p_block = block_New( p_demux, i_size + 4 );
1614         p_block->p_buffer[0] = 0x00;
1615         p_block->p_buffer[1] = 0x00;
1616         p_block->p_buffer[2] = 0x00;
1617         p_block->p_buffer[3] = 0x01;
1618         memcpy( &p_block->p_buffer[4], tk->p_buffer, i_size );
1619     }
1620     else if( tk->b_asf )
1621     {
1622         int i_copy = __MIN( p_sys->asfh.i_min_data_packet_size, (int)i_size );
1623         p_block = block_New( p_demux, p_sys->asfh.i_min_data_packet_size );
1624
1625         memcpy( p_block->p_buffer, tk->p_buffer, i_copy );
1626     }
1627     else
1628     {
1629         p_block = block_New( p_demux, i_size );
1630         memcpy( p_block->p_buffer, tk->p_buffer, i_size );
1631     }
1632
1633     if( p_sys->i_pcr < i_pts )
1634     {
1635         p_sys->i_pcr = i_pts;
1636     }
1637
1638     if( (i_pts != tk->i_pts) && (!tk->b_muxed) )
1639     {
1640         p_block->i_pts = i_pts;
1641     }
1642
1643     /* Update our global npt value */
1644     if( tk->i_npt > 0 && tk->i_npt > p_sys->i_npt && tk->i_npt < p_sys->i_npt_length)
1645         p_sys->i_npt = tk->i_npt; 
1646
1647     if( !tk->b_muxed )
1648     {
1649         /*FIXME: for h264 you should check that packetization-mode=1 in sdp-file */
1650         p_block->i_dts = ( tk->fmt.i_codec == VLC_FOURCC( 'm', 'p', 'g', 'v' ) ) ? 0 : i_pts;
1651     }
1652
1653     if( tk->b_muxed )
1654     {
1655         stream_DemuxSend( tk->p_out_muxed, p_block );
1656     }
1657     else if( tk->b_asf )
1658     {
1659         stream_DemuxSend( p_sys->p_out_asf, p_block );
1660     }
1661     else
1662     {
1663         es_out_Send( p_demux->out, tk->p_es, p_block );
1664     }
1665
1666     /* warn that's ok */
1667     p_sys->event = 0xff;
1668
1669     /* we have read data */
1670     tk->waiting = 0;
1671     p_demux->p_sys->b_no_data = false;
1672     p_demux->p_sys->i_no_data_ti = 0;
1673
1674     if( i_pts > 0 && !tk->b_muxed )
1675     {
1676         tk->i_pts = i_pts;
1677     }
1678 }
1679
1680 /*****************************************************************************
1681  *
1682  *****************************************************************************/
1683 static void StreamClose( void *p_private )
1684 {
1685     live_track_t   *tk = (live_track_t*)p_private;
1686     demux_t        *p_demux = tk->p_demux;
1687     demux_sys_t    *p_sys = p_demux->p_sys;
1688
1689     msg_Dbg( p_demux, "StreamClose" );
1690
1691     p_sys->event = 0xff;
1692     p_demux->b_error = true;
1693 }
1694
1695
1696 /*****************************************************************************
1697  *
1698  *****************************************************************************/
1699 static void TaskInterrupt( void *p_private )
1700 {
1701     demux_t *p_demux = (demux_t*)p_private;
1702
1703     p_demux->p_sys->i_no_data_ti++;
1704
1705     /* Avoid lock */
1706     p_demux->p_sys->event = 0xff;
1707 }
1708
1709 /*****************************************************************************
1710  *
1711  *****************************************************************************/
1712 static void* TimeoutPrevention( void *p_data )
1713 {
1714     timeout_thread_t *p_timeout = (timeout_thread_t *)p_data;
1715
1716     for( ;; )
1717     {
1718         /* Voodoo (= no) thread safety here! *Ahem* */
1719         if( p_timeout->b_handle_keep_alive )
1720         {
1721             char *psz_bye = NULL;
1722             int canc = vlc_savecancel ();
1723
1724             p_timeout->p_sys->rtsp->getMediaSessionParameter( *p_timeout->p_sys->ms, NULL, psz_bye );
1725             vlc_restorecancel (canc);
1726         }
1727         p_timeout->p_sys->b_timeout_call = !p_timeout->b_handle_keep_alive;
1728
1729         msleep (((int64_t)p_timeout->p_sys->i_timeout - 2) * CLOCK_FREQ);
1730     }
1731     assert(0); /* dead code */
1732 }
1733
1734 /*****************************************************************************
1735  *
1736  *****************************************************************************/
1737 static int b64_decode( char *dest, char *src );
1738
1739 static int ParseASF( demux_t *p_demux )
1740 {
1741     demux_sys_t    *p_sys = p_demux->p_sys;
1742
1743     const char *psz_marker = "a=pgmpu:data:application/vnd.ms.wms-hdr.asfv1;base64,";
1744     char *psz_asf = strcasestr( p_sys->p_sdp, psz_marker );
1745     char *psz_end;
1746     block_t *p_header;
1747
1748     /* Parse the asf header */
1749     if( psz_asf == NULL )
1750         return VLC_EGENERIC;
1751
1752     psz_asf += strlen( psz_marker );
1753     psz_asf = strdup( psz_asf );    /* Duplicate it */
1754     psz_end = strchr( psz_asf, '\n' );
1755
1756     while( psz_end > psz_asf && ( *psz_end == '\n' || *psz_end == '\r' ) )
1757         *psz_end-- = '\0';
1758
1759     if( psz_asf >= psz_end )
1760     {
1761         free( psz_asf );
1762         return VLC_EGENERIC;
1763     }
1764
1765     /* Always smaller */
1766     p_header = block_New( p_demux, psz_end - psz_asf );
1767     p_header->i_buffer = b64_decode( (char*)p_header->p_buffer, psz_asf );
1768     //msg_Dbg( p_demux, "Size=%d Hdrb64=%s", p_header->i_buffer, psz_asf );
1769     if( p_header->i_buffer <= 0 )
1770     {
1771         free( psz_asf );
1772         return VLC_EGENERIC;
1773     }
1774
1775     /* Parse it to get packet size */
1776     asf_HeaderParse( &p_sys->asfh, p_header->p_buffer, p_header->i_buffer );
1777
1778     /* Send it to demuxer */
1779     stream_DemuxSend( p_sys->p_out_asf, p_header );
1780
1781     free( psz_asf );
1782     return VLC_SUCCESS;
1783 }
1784
1785
1786 static unsigned char* parseH264ConfigStr( char const* configStr,
1787                                           unsigned int& configSize )
1788 {
1789     char *dup, *psz;
1790     int i, i_records = 1;
1791
1792     if( configSize )
1793     configSize = 0;
1794
1795     if( configStr == NULL || *configStr == '\0' )
1796         return NULL;
1797
1798     psz = dup = strdup( configStr );
1799
1800     /* Count the number of comma's */
1801     for( psz = dup; *psz != '\0'; ++psz )
1802     {
1803         if( *psz == ',')
1804         {
1805             ++i_records;
1806             *psz = '\0';
1807         }
1808     }
1809
1810     unsigned char *cfg = new unsigned char[5 * strlen(dup)];
1811     psz = dup;
1812     for( i = 0; i < i_records; i++ )
1813     {
1814         cfg[configSize++] = 0x00;
1815         cfg[configSize++] = 0x00;
1816         cfg[configSize++] = 0x00;
1817         cfg[configSize++] = 0x01;
1818
1819         configSize += b64_decode( (char*)&cfg[configSize], psz );
1820         psz += strlen(psz)+1;
1821     }
1822
1823     free( dup );
1824     return cfg;
1825 }
1826
1827 /*char b64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";*/
1828 static int b64_decode( char *dest, char *src )
1829 {
1830     const char *dest_start = dest;
1831     int  i_level;
1832     int  last = 0;
1833     int  b64[256] = {
1834         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* 00-0F */
1835         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* 10-1F */
1836         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,62,-1,-1,-1,63,  /* 20-2F */
1837         52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-1,-1,-1,  /* 30-3F */
1838         -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,  /* 40-4F */
1839         15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1,  /* 50-5F */
1840         -1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,  /* 60-6F */
1841         41,42,43,44,45,46,47,48,49,50,51,-1,-1,-1,-1,-1,  /* 70-7F */
1842         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* 80-8F */
1843         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* 90-9F */
1844         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* A0-AF */
1845         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* B0-BF */
1846         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* C0-CF */
1847         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* D0-DF */
1848         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,  /* E0-EF */
1849         -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1   /* F0-FF */
1850         };
1851
1852     for( i_level = 0; *src != '\0'; src++ )
1853     {
1854         int  c;
1855
1856         c = b64[(unsigned int)*src];
1857         if( c == -1 )
1858         {
1859             continue;
1860         }
1861
1862         switch( i_level )
1863         {
1864             case 0:
1865                 i_level++;
1866                 break;
1867             case 1:
1868                 *dest++ = ( last << 2 ) | ( ( c >> 4)&0x03 );
1869                 i_level++;
1870                 break;
1871             case 2:
1872                 *dest++ = ( ( last << 4 )&0xf0 ) | ( ( c >> 2 )&0x0f );
1873                 i_level++;
1874                 break;
1875             case 3:
1876                 *dest++ = ( ( last &0x03 ) << 6 ) | c;
1877                 i_level = 0;
1878         }
1879         last = c;
1880     }
1881
1882     *dest = '\0';
1883
1884     return dest - dest_start;
1885 }