git.sesse.net Git - vlc/blob - modules/misc/rtsp.c

   1 /*****************************************************************************
   2  * rtsp.c: rtsp VoD server module
   3  *****************************************************************************
   4  * Copyright (C) 2003-2006 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   8  *          Gildas Bazin <gbazin@videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32
  33 #include <vlc_common.h>
  34 #include <vlc_plugin.h>
  35 #include <vlc_input.h>
  36 #include <vlc_sout.h>
  37 #include <vlc_block.h>
  38
  39 #include <vlc_httpd.h>
  40 #include <vlc_vod.h>
  41 #include <vlc_url.h>
  42 #include <vlc_network.h>
  43 #include <vlc_charset.h>
  44 #include <vlc_strings.h>
  45 #include <vlc_rand.h>
  46
  47 #ifndef WIN32
  48 # include <locale.h>
  49 #endif
  50
  51 #ifdef HAVE_XLOCALE_H
  52 # include <xlocale.h>
  53 #endif
  54
  55 /*****************************************************************************
  56  * Module descriptor
  57  *****************************************************************************/
  58 static int  Open ( vlc_object_t * );
  59 static void Close( vlc_object_t * );
  60
  61 #define HOST_TEXT N_( "RTSP host address" )
  62 #define HOST_LONGTEXT N_( \
  63     "This defines the address, port and path the RTSP VOD server will listen " \
  64     "on.\nSyntax is address:port/path. The default is to listen on all "\
  65     "interfaces (address 0.0.0.0), on port 554, with no path.\nTo listen " \
  66     "only on the local interface, use \"localhost\" as address." )
  67
  68 #define THROTTLE_TEXT N_( "Maximum number of connections" )
  69 #define THROTTLE_LONGTEXT N_( "This limits the maximum number of clients " \
  70     "that can connect to the RTSP VOD. 0 means no limit."  )
  71
  72 #define RAWMUX_TEXT N_( "MUX for RAW RTSP transport" )
  73
  74 #define SESSION_TIMEOUT_TEXT N_( "Sets the timeout option in the RTSP " \
  75     "session string" )
  76 #define SESSION_TIMEOUT_LONGTEXT N_( "Defines what timeout option to add " \
  77     "to the RTSP session ID string. Setting it to a negative number removes " \
  78     "the timeout option entirely. This is needed by some IPTV STBs (such as " \
  79     "those made by HansunTech) which get confused by it. The default is 5." )
  80
  81 vlc_module_begin ()
  82     set_shortname( N_("RTSP VoD" ) )
  83     set_description( N_("RTSP VoD server") )
  84     set_category( CAT_SOUT )
  85     set_subcategory( SUBCAT_SOUT_VOD )
  86     set_capability( "vod server", 1 )
  87     set_callbacks( Open, Close )
  88     add_shortcut( "rtsp" )
  89     add_string ( "rtsp-host", NULL, NULL, HOST_TEXT, HOST_LONGTEXT, true )
  90     add_string( "rtsp-raw-mux", "ts", NULL, RAWMUX_TEXT,
  91                 RAWMUX_TEXT, true )
  92     add_integer( "rtsp-throttle-users", 0, NULL, THROTTLE_TEXT,
  93                  THROTTLE_LONGTEXT, true )
  94     add_integer( "rtsp-session-timeout", 5, NULL, SESSION_TIMEOUT_TEXT,
  95                  SESSION_TIMEOUT_LONGTEXT, true )
  96 vlc_module_end ()
  97
  98 /*****************************************************************************
  99  * Exported prototypes
 100  *****************************************************************************/
 101
 102 typedef struct media_es_t media_es_t;
 103
 104 typedef struct
 105 {
 106     media_es_t *p_media_es;
 107     int i_port;
 108
 109 } rtsp_client_es_t;
 110
 111 typedef struct
 112 {
 113     char *psz_session;
 114
 115     bool b_playing; /* is it in "play" state */
 116     bool b_paused; /* is it in "pause" state */
 117
 118     int i_es;
 119     rtsp_client_es_t **es;
 120
 121 } rtsp_client_t;
 122
 123 struct media_es_t
 124 {
 125     /* VoD server */
 126     vod_t *p_vod;
 127
 128     /* RTSP server */
 129     httpd_url_t *p_rtsp_url;
 130
 131     vod_media_t *p_media;
 132
 133     es_format_t fmt;
 134     uint8_t     i_payload_type;
 135     const char  *psz_ptname;
 136     unsigned    i_clock_rate;
 137     unsigned    i_channels;
 138     char        *psz_fmtp;
 139
 140 };
 141
 142 struct vod_media_t
 143 {
 144     int id;
 145
 146     /* VoD server */
 147     vod_t *p_vod;
 148
 149     /* RTSP server */
 150     httpd_url_t  *p_rtsp_url;
 151     char         *psz_rtsp_control_v4;
 152     char         *psz_rtsp_control_v6;
 153     char         *psz_rtsp_path;
 154
 155     int  i_payload_type;
 156
 157     vlc_mutex_t lock;
 158
 159     /* ES list */
 160     int        i_es;
 161     media_es_t **es;
 162     const char *psz_mux;
 163     bool  b_raw;
 164
 165     /* RTSP client */
 166     int           i_rtsp;
 167     rtsp_client_t **rtsp;
 168
 169     /* Infos */
 170     mtime_t i_length;
 171 };
 172
 173 struct vod_sys_t
 174 {
 175     /* RTSP server */
 176     httpd_host_t *p_rtsp_host;
 177     char *psz_path;
 178     int i_port;
 179     int i_throttle_users;
 180     int i_connections;
 181
 182     char *psz_raw_mux;
 183
 184     int i_session_timeout;
 185
 186     /* List of media */
 187     int i_media_id;
 188     int i_media;
 189     vod_media_t **media;
 190
 191     /* */
 192     block_fifo_t *p_fifo_cmd;
 193 };
 194
 195 /* rtsp delayed command (to avoid deadlock between vlm/httpd) */
 196 typedef enum
 197 {
 198     RTSP_CMD_TYPE_NONE,  /* Exit requested */
 199
 200     RTSP_CMD_TYPE_PLAY,
 201     RTSP_CMD_TYPE_PAUSE,
 202     RTSP_CMD_TYPE_STOP,
 203     RTSP_CMD_TYPE_SEEK,
 204     RTSP_CMD_TYPE_REWIND,
 205     RTSP_CMD_TYPE_FORWARD,
 206
 207     RTSP_CMD_TYPE_ADD,
 208     RTSP_CMD_TYPE_DEL,
 209 } rtsp_cmd_type_t;
 210
 211 /* */
 212 typedef struct
 213 {
 214     int i_type;
 215     int i_media_id;
 216     vod_media_t *p_media;
 217     char *psz_session;
 218     char *psz_arg;
 219     double f_arg;
 220 } rtsp_cmd_t;
 221
 222 static vod_media_t *MediaNew( vod_t *, const char *, input_item_t * );
 223 static void         MediaDel( vod_t *, vod_media_t * );
 224 static void         MediaAskDel ( vod_t *, vod_media_t * );
 225 static int          MediaAddES( vod_t *, vod_media_t *, es_format_t * );
 226 static void         MediaDelES( vod_t *, vod_media_t *, es_format_t * );
 227
 228 static void* CommandThread( vlc_object_t *p_this );
 229 static void  CommandPush( vod_t *, rtsp_cmd_type_t, vod_media_t *, const char *psz_session,
 230                           double f_arg, const char *psz_arg );
 231
 232 static rtsp_client_t *RtspClientNew( vod_media_t *, char * );
 233 static rtsp_client_t *RtspClientGet( vod_media_t *, const char * );
 234 static void           RtspClientDel( vod_media_t *, rtsp_client_t * );
 235
 236 static int RtspCallback( httpd_callback_sys_t *, httpd_client_t *,
 237                          httpd_message_t *, const httpd_message_t * );
 238 static int RtspCallbackES( httpd_callback_sys_t *, httpd_client_t *,
 239                            httpd_message_t *, const httpd_message_t * );
 240
 241 static char *SDPGenerate( const vod_media_t *, httpd_client_t *cl );
 242
 243 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
 244 {
 245     static const char hex[16] = "0123456789abcdef";
 246
 247     for( int i = 0; i < i_data; i++ )
 248     {
 249         s[2*i+0] = hex[(p_data[i]>>4)&0xf];
 250         s[2*i+1] = hex[(p_data[i]   )&0xf];
 251     }
 252     s[2*i_data] = '\0';
 253 }
 254
 255 /*****************************************************************************
 256  * Open: Starts the RTSP server module
 257  *****************************************************************************/
 258 static int Open( vlc_object_t *p_this )
 259 {
 260     vod_t *p_vod = (vod_t *)p_this;
 261     vod_sys_t *p_sys = NULL;
 262     char *psz_url = NULL;
 263     vlc_url_t url;
 264
 265     psz_url = var_InheritString( p_vod, "rtsp-host" );
 266     vlc_UrlParse( &url, psz_url, 0 );
 267     free( psz_url );
 268
 269     if( url.i_port <= 0 ) url.i_port = 554;
 270
 271     p_vod->p_sys = p_sys = malloc( sizeof( vod_sys_t ) );
 272     if( !p_sys ) goto error;
 273     p_sys->p_rtsp_host = 0;
 274
 275     p_sys->i_session_timeout = var_CreateGetInteger( p_this, "rtsp-session-timeout" );
 276
 277     p_sys->i_throttle_users = var_CreateGetInteger( p_this, "rtsp-throttle-users" );
 278     msg_Dbg( p_this, "allowing up to %d connections", p_sys->i_throttle_users );
 279     p_sys->i_connections = 0;
 280
 281     p_sys->psz_raw_mux = var_CreateGetString( p_this, "rtsp-raw-mux" );
 282
 283     p_sys->p_rtsp_host =
 284         httpd_HostNew( VLC_OBJECT(p_vod), url.psz_host, url.i_port );
 285     if( !p_sys->p_rtsp_host )
 286     {
 287         msg_Err( p_vod, "cannot create RTSP server (%s:%i)",
 288                  url.psz_host, url.i_port );
 289         goto error;
 290     }
 291
 292     p_sys->psz_path = strdup( url.psz_path ? url.psz_path : "/" );
 293     p_sys->i_port = url.i_port;
 294
 295     vlc_UrlClean( &url );
 296
 297     TAB_INIT( p_sys->i_media, p_sys->media );
 298     p_sys->i_media_id = 0;
 299
 300     p_vod->pf_media_new = MediaNew;
 301     p_vod->pf_media_del = MediaAskDel;
 302     p_vod->pf_media_add_es = MediaAddES;
 303     p_vod->pf_media_del_es = MediaDelES;
 304
 305     p_sys->p_fifo_cmd = block_FifoNew();
 306     if( vlc_thread_create( p_vod, "rtsp vod thread", CommandThread,
 307                            VLC_THREAD_PRIORITY_LOW ) )
 308     {
 309         msg_Err( p_vod, "cannot spawn rtsp vod thread" );
 310         block_FifoRelease( p_sys->p_fifo_cmd );
 311         free( p_sys->psz_path );
 312         goto error;
 313     }
 314
 315     return VLC_SUCCESS;
 316
 317 error:
 318     if( p_sys )
 319     {
 320         if( p_sys->p_rtsp_host ) httpd_HostDelete( p_sys->p_rtsp_host );
 321         free( p_sys->psz_raw_mux );
 322         free( p_sys );
 323     }
 324     vlc_UrlClean( &url );
 325
 326     return VLC_EGENERIC;
 327 }
 328
 329 /*****************************************************************************
 330  * Close:
 331  *****************************************************************************/
 332 static void Close( vlc_object_t * p_this )
 333 {
 334     vod_t *p_vod = (vod_t *)p_this;
 335     vod_sys_t *p_sys = p_vod->p_sys;
 336
 337     /* Stop command thread */
 338     vlc_object_kill( p_vod );
 339     CommandPush( p_vod, RTSP_CMD_TYPE_NONE, NULL, NULL, 0.0, NULL );
 340     vlc_thread_join( p_vod );
 341
 342     while( block_FifoCount( p_sys->p_fifo_cmd ) > 0 )
 343     {
 344         rtsp_cmd_t cmd;
 345         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 346         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 347         block_Release( p_block_cmd );
 348         if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 349             MediaDel(p_vod, cmd.p_media);
 350         free( cmd.psz_session );
 351         free( cmd.psz_arg );
 352     }
 353     block_FifoRelease( p_sys->p_fifo_cmd );
 354
 355     httpd_HostDelete( p_sys->p_rtsp_host );
 356     var_Destroy( p_this, "rtsp-session-timeout" );
 357     var_Destroy( p_this, "rtsp-throttle-users" );
 358     var_Destroy( p_this, "rtsp-raw-mux" );
 359
 360     /* Check VLM is not buggy */
 361     if( p_sys->i_media > 0 )
 362         msg_Err( p_vod, "rtsp vod leaking %d medias", p_sys->i_media );
 363     TAB_CLEAN( p_sys->i_media, p_sys->media );
 364
 365     free( p_sys->psz_path );
 366     free( p_sys->psz_raw_mux );
 367     free( p_sys );
 368 }
 369
 370 /*****************************************************************************
 371  * Media handling
 372  *****************************************************************************/
 373 static vod_media_t *MediaNew( vod_t *p_vod, const char *psz_name,
 374                               input_item_t *p_item )
 375 {
 376     vod_sys_t *p_sys = p_vod->p_sys;
 377
 378     vod_media_t *p_media = calloc( 1, sizeof(vod_media_t) );
 379     if( !p_media )
 380         return NULL;
 381
 382     p_media->id = p_sys->i_media_id++;
 383     TAB_INIT( p_media->i_es, p_media->es );
 384     p_media->psz_mux = NULL;
 385     TAB_INIT( p_media->i_rtsp, p_media->rtsp );
 386     p_media->b_raw = false;
 387
 388     if( asprintf( &p_media->psz_rtsp_path, "%s%s",
 389                   p_sys->psz_path, psz_name ) <0 )
 390         return NULL;
 391     p_media->p_rtsp_url =
 392         httpd_UrlNewUnique( p_sys->p_rtsp_host, p_media->psz_rtsp_path, NULL,
 393                             NULL, NULL );
 394
 395     if( !p_media->p_rtsp_url )
 396     {
 397         msg_Err( p_vod, "cannot create RTSP url (%s)", p_media->psz_rtsp_path);
 398         free( p_media->psz_rtsp_path );
 399         free( p_media );
 400         return NULL;
 401     }
 402
 403     msg_Dbg( p_vod, "created RTSP url: %s", p_media->psz_rtsp_path );
 404
 405     if( asprintf( &p_media->psz_rtsp_control_v4,
 406                "rtsp://%%s:%d%s/trackID=%%d",
 407                p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 408     {
 409         httpd_UrlDelete( p_media->p_rtsp_url );
 410         free( p_media->psz_rtsp_path );
 411         free( p_media );
 412         return NULL;
 413     }
 414     if( asprintf( &p_media->psz_rtsp_control_v6,
 415                "rtsp://[%%s]:%d%s/trackID=%%d",
 416               p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 417     {
 418         httpd_UrlDelete( p_media->p_rtsp_url );
 419         free( p_media->psz_rtsp_path );
 420         free( p_media );
 421         return NULL;
 422     }
 423
 424     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_SETUP,
 425                     RtspCallback, (void*)p_media );
 426     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_DESCRIBE,
 427                     RtspCallback, (void*)p_media );
 428     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PLAY,
 429                     RtspCallback, (void*)p_media );
 430     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PAUSE,
 431                     RtspCallback, (void*)p_media );
 432     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_GETPARAMETER,
 433                     RtspCallback, (void*)p_media );
 434     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 435                     RtspCallback, (void*)p_media );
 436
 437     p_media->p_vod = p_vod;
 438
 439     vlc_mutex_init( &p_media->lock );
 440
 441     p_media->i_payload_type = 96;
 442
 443     p_media->i_length = input_item_GetDuration( p_item );
 444
 445     vlc_mutex_lock( &p_item->lock );
 446     msg_Dbg( p_vod, "media has %i declared ES", p_item->i_es );
 447     for( int i = 0; i < p_item->i_es; i++ )
 448     {
 449         MediaAddES( p_vod, p_media, p_item->es[i] );
 450     }
 451     vlc_mutex_unlock( &p_item->lock );
 452
 453     CommandPush( p_vod, RTSP_CMD_TYPE_ADD, p_media, NULL, 0.0, NULL );
 454     return p_media;
 455 }
 456
 457 static void MediaAskDel ( vod_t *p_vod, vod_media_t *p_media )
 458 {
 459     CommandPush( p_vod, RTSP_CMD_TYPE_DEL, p_media, NULL, 0.0, NULL );
 460 }
 461
 462 static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
 463 {
 464     vod_sys_t *p_sys = p_vod->p_sys;
 465
 466     msg_Dbg( p_vod, "deleting media: %s", p_media->psz_rtsp_path );
 467
 468     TAB_REMOVE( p_sys->i_media, p_sys->media, p_media );
 469
 470     httpd_UrlDelete( p_media->p_rtsp_url );
 471
 472     while( p_media->i_rtsp > 0 )
 473         RtspClientDel( p_media, p_media->rtsp[0] );
 474     TAB_CLEAN( p_media->i_rtsp, p_media->rtsp );
 475
 476     free( p_media->psz_rtsp_path );
 477     free( p_media->psz_rtsp_control_v6 );
 478     free( p_media->psz_rtsp_control_v4 );
 479
 480     while( p_media->i_es )
 481         MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );
 482     TAB_CLEAN( p_media->i_es, p_media->es );
 483
 484     vlc_mutex_destroy( &p_media->lock );
 485
 486     free( p_media );
 487 }
 488
 489 static int MediaAddES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt )
 490 {
 491     char *psz_urlc;
 492
 493     if( p_media->i_payload_type >= 128 )
 494     {
 495         msg_Err( p_vod, "too many elementary streams");
 496         return VLC_EGENERIC;
 497     }
 498
 499     media_es_t *p_es = calloc( 1, sizeof(media_es_t) );
 500     if( !p_es )
 501         return VLC_ENOMEM;
 502
 503     p_media->psz_mux = NULL;
 504
 505     /* TODO: update SDP, etc... */
 506     if( asprintf( &psz_urlc, "%s/trackID=%d",
 507               p_media->psz_rtsp_path, p_media->i_es ) < 0 )
 508     {
 509         free( p_es );
 510         return VLC_ENOMEM;
 511     }
 512     msg_Dbg( p_vod, "  - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
 513
 514     p_es->i_clock_rate = 90000;
 515     p_es->i_channels = 1;
 516
 517     switch( p_fmt->i_codec )
 518     {
 519         case VLC_CODEC_S16B:
 520             if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
 521             {
 522                 p_es->i_payload_type = 11;
 523             }
 524             else if( p_fmt->audio.i_channels == 2 &&
 525                      p_fmt->audio.i_rate == 44100 )
 526             {
 527                 p_es->i_payload_type = 10;
 528             }
 529             else
 530             {
 531                 p_es->i_payload_type = p_media->i_payload_type++;
 532             }
 533             p_es->psz_ptname = "L16";
 534             p_es->i_clock_rate = p_fmt->audio.i_rate;
 535             p_es->i_channels = p_fmt->audio.i_channels;
 536             break;
 537         case VLC_CODEC_U8:
 538             p_es->i_payload_type = p_media->i_payload_type++;
 539             p_es->psz_ptname = "L8";
 540             p_es->i_clock_rate = p_fmt->audio.i_rate;
 541             p_es->i_channels = p_fmt->audio.i_channels;
 542             break;
 543         case VLC_CODEC_MPGA:
 544             p_es->i_payload_type = 14;
 545             p_es->psz_ptname = "MPA";
 546             break;
 547         case VLC_CODEC_MPGV:
 548             p_es->i_payload_type = 32;
 549             p_es->psz_ptname = "MPV";
 550             break;
 551         case VLC_CODEC_A52:
 552             p_es->i_payload_type = p_media->i_payload_type++;
 553             p_es->psz_ptname = "ac3";
 554             p_es->i_clock_rate = p_fmt->audio.i_rate;
 555             break;
 556         case VLC_CODEC_H263:
 557             p_es->i_payload_type = p_media->i_payload_type++;
 558             p_es->psz_ptname = "H263-1998";
 559             break;
 560         case VLC_CODEC_H264:
 561             p_es->i_payload_type = p_media->i_payload_type++;
 562             p_es->psz_ptname = "H264";
 563             p_es->psz_fmtp = NULL;
 564             /* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
 565             if( p_fmt->i_extra > 0 )
 566             {
 567                 uint8_t *p_buffer = p_fmt->p_extra;
 568                 int     i_buffer = p_fmt->i_extra;
 569                 char    *p_64_sps = NULL;
 570                 char    *p_64_pps = NULL;
 571                 char    hexa[6+1];
 572
 573                 while( i_buffer > 4 &&
 574                        p_buffer[0] == 0 && p_buffer[1] == 0 &&
 575                        p_buffer[2] == 0 && p_buffer[3] == 1 )
 576                 {
 577                     const int i_nal_type = p_buffer[4]&0x1f;
 578                     int i_offset;
 579                     int i_size      = 0;
 580
 581                     i_size = i_buffer;
 582                     for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
 583                     {
 584                         if( !memcmp (p_buffer + i_offset, "\x00\x00\x00\x01", 4 ) )
 585                         {
 586                             /* we found another startcode */
 587                             i_size = i_offset;
 588                             break;
 589                         }
 590                     }
 591                     if( i_nal_type == 7 )
 592                     {
 593                         free( p_64_sps );
 594                         p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 595                         sprintf_hexa( hexa, &p_buffer[5], 3 );
 596                     }
 597                     else if( i_nal_type == 8 )
 598                     {
 599                         free( p_64_pps );
 600                         p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 601                     }
 602                     i_buffer -= i_size;
 603                     p_buffer += i_size;
 604                 }
 605                 /* */
 606                 if( p_64_sps && p_64_pps )
 607                 {
 608                     if( asprintf( &p_es->psz_fmtp,
 609                                   "packetization-mode=1;profile-level-id=%s;"
 610                                   "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
 611                                   p_64_pps ) < 0 )
 612                     {
 613                         free( p_64_sps );
 614                         free( p_64_pps );
 615                         free( psz_urlc );
 616                         free( p_es );
 617                         return VLC_ENOMEM;
 618                     }
 619                 }
 620                 free( p_64_sps );
 621                 free( p_64_pps );
 622             }
 623             if( !p_es->psz_fmtp )
 624                 p_es->psz_fmtp = strdup( "packetization-mode=1" );
 625             break;
 626         case VLC_CODEC_MP4V:
 627             p_es->i_payload_type = p_media->i_payload_type++;
 628             p_es->psz_ptname = "MP4V-ES";
 629             if( p_fmt->i_extra > 0 )
 630             {
 631                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 632                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 633                 if( asprintf( &p_es->psz_fmtp,
 634                               "profile-level-id=3; config=%s;", p_hexa ) == -1 )
 635                     p_es->psz_fmtp = NULL;
 636                 free( p_hexa );
 637             }
 638             break;
 639         case VLC_CODEC_MP4A:
 640             p_es->i_payload_type = p_media->i_payload_type++;
 641             p_es->psz_ptname = "mpeg4-generic";
 642             p_es->i_clock_rate = p_fmt->audio.i_rate;
 643             if( p_fmt->i_extra > 0 )
 644             {
 645                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 646                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 647                 if( asprintf( &p_es->psz_fmtp,
 648                               "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
 649                               "config=%s; SizeLength=13;IndexLength=3; "
 650                               "IndexDeltaLength=3; Profile=1;", p_hexa ) == -1 )
 651                     p_es->psz_fmtp = NULL;
 652                 free( p_hexa );
 653             }
 654             break;
 655         case VLC_FOURCC( 'm', 'p', '2', 't' ):
 656             p_media->psz_mux = "ts";
 657             p_es->i_payload_type = 33;
 658             p_es->psz_ptname = "MP2T";
 659             break;
 660         case VLC_FOURCC( 'm', 'p', '2', 'p' ):
 661             p_media->psz_mux = "ps";
 662             p_es->i_payload_type = p_media->i_payload_type++;
 663             p_es->psz_ptname = "MP2P";
 664             break;
 665         case VLC_CODEC_AMR_NB:
 666             p_es->i_payload_type = p_media->i_payload_type++;
 667             p_es->psz_ptname = "AMR";
 668             p_es->i_clock_rate = 8000;
 669             if(p_fmt->audio.i_channels == 2 )
 670                 p_es->i_channels = 2;
 671             p_es->psz_fmtp = strdup( "octet-align=1" );
 672             break;
 673         case VLC_CODEC_AMR_WB:
 674             p_es->i_payload_type = p_media->i_payload_type++;
 675             p_es->psz_ptname = "AMR-WB";
 676             p_es->i_clock_rate = 16000;
 677             if(p_fmt->audio.i_channels == 2 )
 678                 p_es->i_channels = 2;
 679             p_es->psz_fmtp = strdup( "octet-align=1" );
 680             break;
 681
 682         default:
 683             msg_Err( p_vod, "cannot add this stream (unsupported "
 684                     "codec: %4.4s)", (char*)&p_fmt->i_codec );
 685             free( psz_urlc );
 686             free( p_es );
 687             return VLC_EGENERIC;
 688     }
 689
 690     p_es->p_rtsp_url =
 691         httpd_UrlNewUnique( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL,
 692                             NULL );
 693
 694     if( !p_es->p_rtsp_url )
 695     {
 696         msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
 697         free( psz_urlc );
 698         free( p_es );
 699         return VLC_EGENERIC;
 700     }
 701     free( psz_urlc );
 702
 703     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
 704                     RtspCallbackES, (void*)p_es );
 705     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 706                     RtspCallbackES, (void*)p_es );
 707     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
 708                     RtspCallbackES, (void*)p_es );
 709     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
 710                     RtspCallbackES, (void*)p_es );
 711
 712     es_format_Copy( &p_es->fmt, p_fmt );
 713     p_es->p_vod = p_vod;
 714     p_es->p_media = p_media;
 715
 716     vlc_mutex_lock( &p_media->lock );
 717     TAB_APPEND( p_media->i_es, p_media->es, p_es );
 718     vlc_mutex_unlock( &p_media->lock );
 719
 720     return VLC_SUCCESS;
 721 }
 722
 723 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
 724 {
 725     media_es_t *p_es = NULL;
 726
 727     /* Find the ES */
 728     for( int i = 0; i < p_media->i_es; i++ )
 729     {
 730         if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
 731             p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
 732             p_media->es[i]->fmt.i_id == p_fmt->i_id )
 733         {
 734             p_es = p_media->es[i];
 735         }
 736     }
 737     if( !p_es ) return;
 738
 739     msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );
 740
 741     vlc_mutex_lock( &p_media->lock );
 742     TAB_REMOVE( p_media->i_es, p_media->es, p_es );
 743     vlc_mutex_unlock( &p_media->lock );
 744
 745     free( p_es->psz_fmtp );
 746
 747     if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
 748     es_format_Clean( &p_es->fmt );
 749     free( p_es );
 750 }
 751
 752 static void CommandPush( vod_t *p_vod, rtsp_cmd_type_t i_type, vod_media_t *p_media, const char *psz_session,
 753                          double f_arg, const char *psz_arg )
 754 {
 755     rtsp_cmd_t cmd;
 756     block_t *p_cmd;
 757
 758     memset( &cmd, 0, sizeof(cmd) );
 759     cmd.i_type = i_type;
 760     cmd.p_media = p_media;
 761     if( p_media )
 762         cmd.i_media_id = p_media->id;
 763     if( psz_session )
 764         cmd.psz_session = strdup(psz_session);
 765     cmd.f_arg = f_arg;
 766     if( psz_arg )
 767         cmd.psz_arg = strdup(psz_arg);
 768
 769     p_cmd = block_New( p_vod, sizeof(rtsp_cmd_t) );
 770     memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
 771
 772     block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
 773 }
 774
 775 static void* CommandThread( vlc_object_t *p_this )
 776 {
 777     vod_t *p_vod = (vod_t*)p_this;
 778     vod_sys_t *p_sys = p_vod->p_sys;
 779     int canc = vlc_savecancel ();
 780
 781     while( vlc_object_alive (p_vod) )
 782     {
 783         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 784         rtsp_cmd_t cmd;
 785         vod_media_t *p_media = NULL;
 786         int i;
 787
 788         if( !p_block_cmd )
 789             break;
 790
 791         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 792         block_Release( p_block_cmd );
 793
 794         if( cmd.i_type == RTSP_CMD_TYPE_NONE )
 795             break;
 796
 797         if ( cmd.i_type == RTSP_CMD_TYPE_ADD )
 798         {
 799             TAB_APPEND( p_sys->i_media, p_sys->media, cmd.p_media );
 800             goto next;
 801         }
 802
 803         if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 804         {
 805             MediaDel(p_vod, cmd.p_media);
 806             goto next;
 807         }
 808
 809         /* */
 810         for( i = 0; i < p_sys->i_media; i++ )
 811         {
 812             if( p_sys->media[i]->id == cmd.i_media_id )
 813                 break;
 814         }
 815         if( i >= p_sys->i_media )
 816         {
 817             goto next;
 818         }
 819         p_media = p_sys->media[i];
 820
 821         switch( cmd.i_type )
 822         {
 823         case RTSP_CMD_TYPE_PLAY:
 824             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 825                               VOD_MEDIA_PLAY, cmd.psz_arg );
 826             break;
 827         case RTSP_CMD_TYPE_PAUSE:
 828             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 829                               VOD_MEDIA_PAUSE );
 830             break;
 831
 832         case RTSP_CMD_TYPE_STOP:
 833             vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
 834             break;
 835
 836         case RTSP_CMD_TYPE_SEEK:
 837             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 838                               VOD_MEDIA_SEEK, cmd.f_arg );
 839             break;
 840
 841         case RTSP_CMD_TYPE_REWIND:
 842             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 843                               VOD_MEDIA_REWIND, cmd.f_arg );
 844             break;
 845
 846         case RTSP_CMD_TYPE_FORWARD:
 847             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 848                               VOD_MEDIA_FORWARD, cmd.f_arg );
 849             break;
 850
 851         default:
 852             break;
 853         }
 854
 855     next:
 856         free( cmd.psz_session );
 857         free( cmd.psz_arg );
 858     }
 859
 860     vlc_restorecancel (canc);
 861     return NULL;
 862 }
 863
 864 /****************************************************************************
 865  * RTSP server implementation
 866  ****************************************************************************/
 867 static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
 868 {
 869     rtsp_client_t *p_rtsp = calloc( 1, sizeof(rtsp_client_t) );
 870
 871     if( !p_rtsp )
 872         return NULL;
 873     p_rtsp->es = 0;
 874
 875     p_rtsp->psz_session = psz_session;
 876     TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 877
 878     p_media->p_vod->p_sys->i_connections++;
 879     msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
 880              psz_session, p_media->p_vod->p_sys->i_throttle_users );
 881
 882     return p_rtsp;
 883 }
 884
 885 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
 886 {
 887     for( int i = 0; psz_session && i < p_media->i_rtsp; i++ )
 888     {
 889         if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
 890             return p_media->rtsp[i];
 891     }
 892
 893     return NULL;
 894 }
 895
 896 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
 897 {
 898     p_media->p_vod->p_sys->i_connections--;
 899     msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
 900              p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
 901
 902     while( p_rtsp->i_es )
 903     {
 904         p_rtsp->i_es--;
 905         free( p_rtsp->es[p_rtsp->i_es] );
 906     }
 907     free( p_rtsp->es );
 908
 909     TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 910
 911     free( p_rtsp->psz_session );
 912     free( p_rtsp );
 913 }
 914
 915
 916 static float ParseNPT (const char *str)
 917 {
 918     locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
 919     locale_t oldloc = uselocale (loc);
 920     unsigned hour, min;
 921     float sec;
 922
 923     if (sscanf (str, "%u:%u:%f", &hour, &min, &sec) == 3)
 924         sec += ((hour * 60) + min) * 60;
 925     else
 926     if (sscanf (str, "%f", &sec) != 1)
 927         sec = 0.;
 928
 929     if (loc != (locale_t)0)
 930     {
 931         uselocale (oldloc);
 932         freelocale (loc);
 933     }
 934     return sec;
 935 }
 936
 937
 938 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
 939                          httpd_message_t *answer, const httpd_message_t *query )
 940 {
 941     vod_media_t *p_media = (vod_media_t*)p_args;
 942     vod_t *p_vod = p_media->p_vod;
 943     const char *psz_transport = NULL;
 944     const char *psz_playnow = NULL; /* support option: x-playNow */
 945     const char *psz_session = NULL;
 946     const char *psz_cseq = NULL;
 947     rtsp_client_t *p_rtsp;
 948     int i_port = 0;
 949     int i_cseq = 0;
 950
 951     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
 952
 953     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
 954
 955     answer->i_proto   = HTTPD_PROTO_RTSP;
 956     answer->i_version = query->i_version;
 957     answer->i_type    = HTTPD_MSG_ANSWER;
 958     answer->i_body    = 0;
 959     answer->p_body    = NULL;
 960
 961     switch( query->i_type )
 962     {
 963         case HTTPD_MSG_SETUP:
 964         {
 965             psz_playnow = httpd_MsgGet( query, "x-playNow" );
 966             psz_transport = httpd_MsgGet( query, "Transport" );
 967             if( psz_transport == NULL )
 968             {
 969                 answer->i_status = 400;
 970                 break;
 971             }
 972             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
 973
 974             if( strstr( psz_transport, "unicast" ) &&
 975                 strstr( psz_transport, "client_port=" ) )
 976             {
 977                 rtsp_client_t *p_rtsp = NULL;
 978                 char ip[NI_MAXNUMERICHOST];
 979                 i_port = atoi( strstr( psz_transport, "client_port=" ) +
 980                                 strlen("client_port=") );
 981
 982                 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
 983                     strstr( psz_transport, "RAW/RAW/UDP" ) )
 984                 {
 985                     p_media->psz_mux = p_vod->p_sys->psz_raw_mux;
 986                     p_media->b_raw = true;
 987                 }
 988
 989                 if( httpd_ClientIP( cl, ip ) == NULL )
 990                 {
 991                     answer->i_status = 500;
 992                     answer->i_body = 0;
 993                     answer->p_body = NULL;
 994                     break;
 995                 }
 996
 997                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
 998                          ip, i_port );
 999
1000                 psz_session = httpd_MsgGet( query, "Session" );
1001                 if( !psz_session || !*psz_session )
1002                 {
1003                     char *psz_new;
1004                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1005                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1006                     {
1007                         answer->i_status = 503;
1008                         answer->i_body = 0;
1009                         answer->p_body = NULL;
1010                         break;
1011                     }
1012 #warning Should use secure randomness here! (spoofing risk)
1013                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1014                         return VLC_ENOMEM;
1015                     psz_session = psz_new;
1016
1017                     p_rtsp = RtspClientNew( p_media, psz_new );
1018                     if( !p_rtsp )
1019                     {
1020                         answer->i_status = 454;
1021                         answer->i_body = 0;
1022                         answer->p_body = NULL;
1023                         break;
1024                     }
1025                 }
1026                 else
1027                 {
1028                     p_rtsp = RtspClientGet( p_media, psz_session );
1029                     if( !p_rtsp )
1030                     {
1031                         answer->i_status = 454;
1032                         answer->i_body = 0;
1033                         answer->p_body = NULL;
1034                         break;
1035                     }
1036                 }
1037
1038                 answer->i_status = 200;
1039                 answer->i_body = 0;
1040                 answer->p_body = NULL;
1041
1042                 if( p_media->b_raw )
1043                 {
1044                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1045                     {
1046                         httpd_MsgAdd( answer, "Transport",
1047                                       "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1048                                       i_port, i_port + 1 );
1049                     }
1050                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1051                     {
1052                         httpd_MsgAdd( answer, "Transport",
1053                                       "RAW/RAW/UDP;unicast;client_port=%d-%d",
1054                                       i_port, i_port + 1 );
1055                     }
1056                 }
1057                 else
1058                     httpd_MsgAdd( answer, "Transport",
1059                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1060                                   i_port, i_port + 1 );
1061             }
1062             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1063             {
1064                 answer->i_status = 461;
1065                 answer->i_body = 0;
1066                 answer->p_body = NULL;
1067             }
1068
1069             /* Intentional fall-through on x-playNow option in RTSP request */
1070             if( !psz_playnow )
1071                 break;
1072         }
1073
1074         case HTTPD_MSG_PLAY:
1075         {
1076             char *psz_output, ip[NI_MAXNUMERICHOST];
1077             int i_port_audio = 0, i_port_video = 0;
1078
1079             /* for now only multicast so easy */
1080             if( !psz_playnow )
1081             {
1082                 answer->i_status = 200;
1083                 answer->i_body = 0;
1084                 answer->p_body = NULL;
1085             }
1086
1087             if( !psz_session )
1088                 psz_session = httpd_MsgGet( query, "Session" );
1089             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1090
1091             p_rtsp = RtspClientGet( p_media, psz_session );
1092             if( !p_rtsp )
1093             {
1094                 answer->i_status = 500;
1095                 answer->i_body = 0;
1096                 answer->p_body = NULL;
1097                 break;
1098             }
1099
1100             if( p_rtsp->b_playing )
1101             {
1102                 const char *psz_position = httpd_MsgGet( query, "Range" );
1103                 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1104                 if( psz_position )
1105                     psz_position = strstr( psz_position, "npt=" );
1106                 if( psz_position && !psz_scale )
1107                 {
1108                     double f_pos = ParseNPT (psz_position + 4);
1109                     msg_Dbg( p_vod, "seeking request: %s", psz_position );
1110                     f_pos /= ((double)(p_media->i_length)) / CLOCK_FREQ / 100;
1111                     CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1112                                  psz_session, f_pos, NULL );
1113                 }
1114                 else if( psz_scale )
1115                 {
1116                     double f_scale = 0.0;
1117                     char *end;
1118
1119                     f_scale = us_strtod( psz_scale, &end );
1120                     if( end > psz_scale )
1121                     {
1122                         f_scale = (f_scale * 30.0);
1123                         if( psz_scale[0] == '-' ) /* rewind */
1124                         {
1125                             msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1126                             CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
1127                                          psz_session, f_scale, NULL );
1128                         }
1129                         else if(psz_scale[0] != '1' ) /* fast-forward */
1130                         {
1131                             msg_Dbg( p_vod, "fastforward request: %s",
1132                                      psz_scale );
1133                             CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
1134                                          psz_session, f_scale, NULL );
1135                         }
1136
1137                         if( p_rtsp->b_paused )
1138                         {
1139                             p_rtsp->b_paused = false;
1140                             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1141                                          psz_session, 0, NULL );
1142                         }
1143                     }
1144                     break;
1145                 }
1146             }
1147
1148             if( p_rtsp->b_playing && p_rtsp->b_paused )
1149             {
1150                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1151                              psz_session, 0, NULL );
1152                 p_rtsp->b_paused = false;
1153                 break;
1154             }
1155             else if( p_rtsp->b_playing ) break;
1156
1157             if( httpd_ClientIP( cl, ip ) == NULL ) break;
1158
1159             p_rtsp->b_playing = true;
1160
1161             /* FIXME for != 1 video and 1 audio */
1162             for( int i = 0; i < p_rtsp->i_es; i++ )
1163             {
1164                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1165                     i_port_audio = p_rtsp->es[i]->i_port;
1166                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1167                     i_port_video = p_rtsp->es[i]->i_port;
1168             }
1169
1170             if( p_media->psz_mux )
1171             {
1172                 if( p_media->b_raw )
1173                 {
1174                     if( asprintf( &psz_output,
1175                               "std{access=udp,dst=%s:%i,mux=%s}",
1176                               ip, i_port, p_media->psz_mux ) < 0 )
1177                         return VLC_ENOMEM;
1178                 }
1179                 else
1180                 {
1181                     if( asprintf( &psz_output,
1182                               "rtp{dst=%s,port=%i,mux=%s}",
1183                               ip, i_port_video, p_media->psz_mux ) < 0 )
1184                         return VLC_ENOMEM;
1185                 }
1186             }
1187             else
1188             {
1189                 if( asprintf( &psz_output,
1190                               "rtp{dst=%s,port-video=%i,port-audio=%i}",
1191                               ip, i_port_video, i_port_audio ) < 0 )
1192                     return VLC_ENOMEM;
1193             }
1194
1195             CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1196                          0, psz_output );
1197             free( psz_output );
1198             break;
1199         }
1200
1201         case HTTPD_MSG_DESCRIBE:
1202         {
1203             char *psz_sdp =
1204                 SDPGenerate( p_media, cl );
1205
1206             if( psz_sdp != NULL )
1207             {
1208                 answer->i_status = 200;
1209                 httpd_MsgAdd( answer, "Content-type",  "%s",
1210                               "application/sdp" );
1211
1212                 answer->p_body = (uint8_t *)psz_sdp;
1213                 answer->i_body = strlen( psz_sdp );
1214             }
1215             else
1216             {
1217                 answer->i_status = 500;
1218                 answer->p_body = NULL;
1219                 answer->i_body = 0;
1220             }
1221             break;
1222         }
1223
1224         case HTTPD_MSG_PAUSE:
1225             psz_session = httpd_MsgGet( query, "Session" );
1226             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1227
1228             p_rtsp = RtspClientGet( p_media, psz_session );
1229             if( !p_rtsp ) break;
1230
1231             if( !p_rtsp->b_paused )
1232             {
1233                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1234                              0, NULL );
1235                 p_rtsp->b_paused = true;
1236             }
1237
1238             answer->i_status = 200;
1239             answer->i_body = 0;
1240             answer->p_body = NULL;
1241             break;
1242
1243         case HTTPD_MSG_TEARDOWN:
1244             /* for now only multicast so easy again */
1245             answer->i_status = 200;
1246             answer->i_body = 0;
1247             answer->p_body = NULL;
1248
1249             psz_session = httpd_MsgGet( query, "Session" );
1250             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1251
1252             p_rtsp = RtspClientGet( p_media, psz_session );
1253             if( !p_rtsp ) break;
1254
1255             CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1256                          0, NULL );
1257             RtspClientDel( p_media, p_rtsp );
1258             break;
1259
1260         case HTTPD_MSG_GETPARAMETER:
1261             answer->i_status = 200;
1262             answer->i_body = 0;
1263             answer->p_body = NULL;
1264             break;
1265
1266         default:
1267             return VLC_EGENERIC;
1268     }
1269
1270     httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1271     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1272     psz_cseq = httpd_MsgGet( query, "Cseq" );
1273     psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1274     httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1275     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1276
1277     if( psz_session )
1278     {
1279          if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
1280              httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1281                p_media->p_vod->p_sys->i_session_timeout );
1282          else
1283               httpd_MsgAdd( answer, "Session", "%s", psz_session );
1284     }
1285
1286     return VLC_SUCCESS;
1287 }
1288
1289 static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1290                            httpd_message_t *answer,
1291                            const httpd_message_t *query )
1292 {
1293     media_es_t *p_es = (media_es_t*)p_args;
1294     vod_media_t *p_media = p_es->p_media;
1295     vod_t *p_vod = p_media->p_vod;
1296     rtsp_client_t *p_rtsp = NULL;
1297     const char *psz_transport = NULL;
1298     const char *psz_playnow = NULL; /* support option: x-playNow */
1299     const char *psz_session = NULL;
1300     const char *psz_position = NULL;
1301     const char *psz_cseq = NULL;
1302     int i_cseq = 0;
1303
1304     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1305
1306     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1307
1308     answer->i_proto   = HTTPD_PROTO_RTSP;
1309     answer->i_version = query->i_version;
1310     answer->i_type    = HTTPD_MSG_ANSWER;
1311     answer->i_body    = 0;
1312     answer->p_body      = NULL;
1313
1314     switch( query->i_type )
1315     {
1316         case HTTPD_MSG_SETUP:
1317             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1318             psz_transport = httpd_MsgGet( query, "Transport" );
1319
1320             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1321
1322             if( strstr( psz_transport, "unicast" ) &&
1323                 strstr( psz_transport, "client_port=" ) )
1324             {
1325                 rtsp_client_t *p_rtsp = NULL;
1326                 rtsp_client_es_t *p_rtsp_es = NULL;
1327                 char ip[NI_MAXNUMERICHOST];
1328                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
1329                                    strlen("client_port=") );
1330
1331                 if( httpd_ClientIP( cl, ip ) == NULL )
1332                 {
1333                     answer->i_status = 500;
1334                     answer->i_body = 0;
1335                     answer->p_body = NULL;
1336                     break;
1337                 }
1338
1339                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1340                         ip, i_port );
1341
1342                 psz_session = httpd_MsgGet( query, "Session" );
1343                 if( !psz_session || !*psz_session )
1344                 {
1345                     char *psz_new;
1346                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1347                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1348                     {
1349                         answer->i_status = 503;
1350                         answer->i_body = 0;
1351                         answer->p_body = NULL;
1352                         break;
1353                     }
1354 #warning Session ID should be securely random (spoofing risk)
1355                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1356                         return VLC_ENOMEM;
1357                     psz_session = psz_new;
1358
1359                     p_rtsp = RtspClientNew( p_media, psz_new );
1360                     if( !p_rtsp )
1361                     {
1362                         answer->i_status = 454;
1363                         answer->i_body = 0;
1364                         answer->p_body = NULL;
1365                         break;
1366                     }
1367                 }
1368                 else
1369                 {
1370                     p_rtsp = RtspClientGet( p_media, psz_session );
1371                     if( !p_rtsp )
1372                     {
1373                         answer->i_status = 454;
1374                         answer->i_body = 0;
1375                         answer->p_body = NULL;
1376                         break;
1377                     }
1378                 }
1379
1380                 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1381                 if( !p_rtsp_es )
1382                 {
1383                     answer->i_status = 500;
1384                     answer->i_body = 0;
1385                     answer->p_body = NULL;
1386                     break;
1387                 }
1388                 p_rtsp_es->i_port = i_port;
1389                 p_rtsp_es->p_media_es = p_es;
1390                 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1391
1392                 answer->i_status = 200;
1393                 answer->i_body = 0;
1394                 answer->p_body = NULL;
1395
1396                 if( p_media->b_raw )
1397                 {
1398                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1399                     {
1400                         httpd_MsgAdd( answer, "Transport",
1401                                      "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1402                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1403                     }
1404                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1405                     {
1406                         httpd_MsgAdd( answer, "Transport",
1407                                      "RAW/RAW/UDP;unicast;client_port=%d-%d",
1408                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1409                     }
1410                 }
1411                 else
1412                 {
1413                     httpd_MsgAdd( answer, "Transport",
1414                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1415                                   p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1416                 }
1417             }
1418             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1419             {
1420                 answer->i_status = 461;
1421                 answer->i_body = 0;
1422                 answer->p_body = NULL;
1423             }
1424
1425             /* Intentional fall-through on x-playNow option in RTSP request */
1426             if( !psz_playnow )
1427                 break;
1428
1429         case HTTPD_MSG_PLAY:
1430             /* This is kind of a kludge. Should we only support Aggregate
1431              * Operations ? */
1432             psz_session = httpd_MsgGet( query, "Session" );
1433             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1434
1435             p_rtsp = RtspClientGet( p_media, psz_session );
1436
1437             psz_position = httpd_MsgGet( query, "Range" );
1438             if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1439             if( psz_position )
1440             {
1441                 double f_pos = ParseNPT (psz_position + 4);
1442                 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1443                 f_pos /= ((double)(p_media->i_length)) / CLOCK_FREQ / 100;
1444                 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1445                              psz_session, f_pos, NULL );
1446             }
1447
1448             if( !psz_playnow )
1449             {
1450                 answer->i_status = 200;
1451                 answer->i_body = 0;
1452                 answer->p_body = NULL;
1453             }
1454             break;
1455
1456         case HTTPD_MSG_TEARDOWN:
1457             answer->i_status = 200;
1458             answer->i_body = 0;
1459             answer->p_body = NULL;
1460
1461             psz_session = httpd_MsgGet( query, "Session" );
1462             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1463
1464             p_rtsp = RtspClientGet( p_media, psz_session );
1465             if( !p_rtsp ) break;
1466
1467             for( int i = 0; i < p_rtsp->i_es; i++ )
1468             {
1469                 if( p_rtsp->es[i]->p_media_es == p_es )
1470                 {
1471                     TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, p_rtsp->es[i] );
1472                     break;
1473                 }
1474             }
1475
1476             if( !p_rtsp->i_es )
1477             {
1478                 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1479                              0, NULL );
1480                 RtspClientDel( p_media, p_rtsp );
1481             }
1482             break;
1483
1484         case HTTPD_MSG_PAUSE:
1485             /* This is kind of a kludge. Should we only support Aggregate
1486              * Operations ? */
1487             psz_session = httpd_MsgGet( query, "Session" );
1488             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1489
1490             p_rtsp = RtspClientGet( p_media, psz_session );
1491             if( !p_rtsp ) break;
1492
1493             if( !p_rtsp->b_paused )
1494             {
1495                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1496                              0, NULL );
1497                 p_rtsp->b_paused = true;
1498             }
1499
1500             answer->i_status = 200;
1501             answer->i_body = 0;
1502             answer->p_body = NULL;
1503             break;
1504
1505         default:
1506             return VLC_EGENERIC;
1507             break;
1508     }
1509
1510     httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1511     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1512     psz_cseq = httpd_MsgGet( query, "Cseq" );
1513     if (psz_cseq)
1514         i_cseq = atoi( psz_cseq );
1515     else
1516         i_cseq = 0;
1517     httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1518     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1519
1520     if( psz_session )
1521         httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1522
1523     return VLC_SUCCESS;
1524 }
1525
1526 /*****************************************************************************
1527  * SDPGenerate: TODO
1528  * FIXME: need to be moved to a common place ?
1529  *****************************************************************************/
1530 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1531 {
1532     char *psz_sdp, ip[NI_MAXNUMERICHOST];
1533     const char *psz_control;
1534
1535     if( httpd_ServerIP( cl, ip ) == NULL )
1536         return NULL;
1537
1538     bool ipv6 = ( strchr( ip, ':' ) != NULL );
1539
1540     psz_control = ipv6 ? p_media->psz_rtsp_control_v6
1541                        : p_media->psz_rtsp_control_v4;
1542
1543     /* Dummy destination address for RTSP */
1544     struct sockaddr_storage dst;
1545     socklen_t dstlen = ipv6 ? sizeof( struct sockaddr_in6 )
1546                             : sizeof( struct sockaddr_in );
1547     memset (&dst, 0, dstlen);
1548     dst.ss_family = ipv6 ? AF_INET6 : AF_INET;
1549 #ifdef HAVE_SA_LEN
1550     dst.ss_len = dstlen;
1551 #endif
1552
1553     psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_media->p_vod ), "sout-rtp-",
1554                              NULL, 0, (struct sockaddr *)&dst, dstlen );
1555     if( psz_sdp == NULL )
1556         return NULL;
1557
1558     if( p_media->i_length > 0 )
1559     {
1560         lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
1561         sdp_AddAttribute( &psz_sdp, "range"," npt=0-%lld.%03u", d.quot,
1562                           (unsigned)d.rem );
1563     }
1564
1565     for( int i = 0; i < p_media->i_es; i++ )
1566     {
1567         media_es_t *p_es = p_media->es[i];
1568         const char *mime_major; /* major MIME type */
1569
1570         switch( p_es->fmt.i_cat )
1571         {
1572             case VIDEO_ES:
1573                 mime_major = "video";
1574                 break;
1575             case AUDIO_ES:
1576                 mime_major = "audio";
1577                 break;
1578             case SPU_ES:
1579                 mime_major = "text";
1580                 break;
1581             default:
1582                 continue;
1583         }
1584
1585         sdp_AddMedia( &psz_sdp, mime_major, "RTP/AVP", 0 /* p_es->i_port */,
1586                       p_es->i_payload_type, false, 0,
1587                       p_es->psz_ptname, p_es->i_clock_rate, p_es->i_channels,
1588                       p_es->psz_fmtp );
1589
1590         sdp_AddAttribute( &psz_sdp, "control", psz_control, ip, i );
1591     }
1592
1593     return psz_sdp;
1594 }