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, HOST_TEXT, HOST_LONGTEXT, true )
  90     add_string( "rtsp-raw-mux", "ts", RAWMUX_TEXT,
  91                 RAWMUX_TEXT, true )
  92     add_integer( "rtsp-throttle-users", 0, THROTTLE_TEXT,
  93                  THROTTLE_LONGTEXT, true )
  94     add_integer( "rtsp-session-timeout", 5, 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     int i_port_raw;
 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     vlc_mutex_t lock;
 156
 157     /* ES list */
 158     int        i_es;
 159     media_es_t **es;
 160     const char *psz_mux;
 161     bool  b_raw;
 162
 163     /* RTSP client */
 164     int           i_rtsp;
 165     rtsp_client_t **rtsp;
 166
 167     /* Infos */
 168     mtime_t i_length;
 169 };
 170
 171 struct vod_sys_t
 172 {
 173     /* RTSP server */
 174     httpd_host_t *p_rtsp_host;
 175     char *psz_path;
 176     int i_port;
 177     int i_throttle_users;
 178     int i_connections;
 179
 180     char *psz_raw_mux;
 181
 182     int i_session_timeout;
 183
 184     /* List of media */
 185     int i_media_id;
 186     int i_media;
 187     vod_media_t **media;
 188
 189     /* */
 190     vlc_thread_t thread;
 191     block_fifo_t *p_fifo_cmd;
 192 };
 193
 194 /* rtsp delayed command (to avoid deadlock between vlm/httpd) */
 195 typedef enum
 196 {
 197     RTSP_CMD_TYPE_NONE,  /* Exit requested */
 198
 199     RTSP_CMD_TYPE_PLAY,
 200     RTSP_CMD_TYPE_PAUSE,
 201     RTSP_CMD_TYPE_STOP,
 202     RTSP_CMD_TYPE_SEEK,
 203     RTSP_CMD_TYPE_REWIND,
 204     RTSP_CMD_TYPE_FORWARD,
 205
 206     RTSP_CMD_TYPE_ADD,
 207     RTSP_CMD_TYPE_DEL,
 208 } rtsp_cmd_type_t;
 209
 210 /* */
 211 typedef struct
 212 {
 213     int i_type;
 214     int i_media_id;
 215     vod_media_t *p_media;
 216     char *psz_session;
 217     char *psz_arg;
 218     int64_t i_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( void * );
 229 static void  CommandPush( vod_t *, rtsp_cmd_type_t, vod_media_t *,
 230                           const char *psz_session, int64_t i_arg,
 231                           double f_arg, const char *psz_arg );
 232
 233 static rtsp_client_t *RtspClientNew( vod_media_t *, char * );
 234 static rtsp_client_t *RtspClientGet( vod_media_t *, const char * );
 235 static void           RtspClientDel( vod_media_t *, rtsp_client_t * );
 236
 237 static int RtspCallback( httpd_callback_sys_t *, httpd_client_t *,
 238                          httpd_message_t *, const httpd_message_t * );
 239 static int RtspCallbackES( httpd_callback_sys_t *, httpd_client_t *,
 240                            httpd_message_t *, const httpd_message_t * );
 241
 242 static char *SDPGenerate( const vod_media_t *, httpd_client_t *cl );
 243
 244 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
 245 {
 246     static const char hex[16] = "0123456789abcdef";
 247
 248     for( int i = 0; i < i_data; i++ )
 249     {
 250         s[2*i+0] = hex[(p_data[i]>>4)&0xf];
 251         s[2*i+1] = hex[(p_data[i]   )&0xf];
 252     }
 253     s[2*i_data] = '\0';
 254 }
 255
 256 /*****************************************************************************
 257  * Open: Starts the RTSP server module
 258  *****************************************************************************/
 259 static int Open( vlc_object_t *p_this )
 260 {
 261     vod_t *p_vod = (vod_t *)p_this;
 262     vod_sys_t *p_sys = NULL;
 263     char *psz_url = NULL;
 264     vlc_url_t url;
 265
 266     psz_url = var_InheritString( p_vod, "rtsp-host" );
 267     vlc_UrlParse( &url, psz_url, 0 );
 268     free( psz_url );
 269
 270     if( url.i_port <= 0 ) url.i_port = 554;
 271
 272     p_vod->p_sys = p_sys = malloc( sizeof( vod_sys_t ) );
 273     if( !p_sys ) goto error;
 274     p_sys->p_rtsp_host = 0;
 275
 276     p_sys->i_session_timeout = var_CreateGetInteger( p_this, "rtsp-session-timeout" );
 277
 278     p_sys->i_throttle_users = var_CreateGetInteger( p_this, "rtsp-throttle-users" );
 279     msg_Dbg( p_this, "allowing up to %d connections", p_sys->i_throttle_users );
 280     p_sys->i_connections = 0;
 281
 282     p_sys->psz_raw_mux = var_CreateGetString( p_this, "rtsp-raw-mux" );
 283
 284     p_sys->p_rtsp_host =
 285         vlc_rtsp_HostNew( VLC_OBJECT(p_vod), url.psz_host, url.i_port );
 286     if( !p_sys->p_rtsp_host )
 287     {
 288         msg_Err( p_vod, "cannot create RTSP server (%s:%i)",
 289                  url.psz_host, url.i_port );
 290         goto error;
 291     }
 292
 293     p_sys->psz_path = strdup( url.psz_path ? url.psz_path : "/" );
 294     p_sys->i_port = url.i_port;
 295
 296     vlc_UrlClean( &url );
 297
 298     TAB_INIT( p_sys->i_media, p_sys->media );
 299     p_sys->i_media_id = 0;
 300
 301     p_vod->pf_media_new = MediaNew;
 302     p_vod->pf_media_del = MediaAskDel;
 303
 304     p_sys->p_fifo_cmd = block_FifoNew();
 305     if( vlc_clone( &p_sys->thread, CommandThread, p_vod, VLC_THREAD_PRIORITY_LOW ) )
 306     {
 307         msg_Err( p_vod, "cannot spawn rtsp vod thread" );
 308         block_FifoRelease( p_sys->p_fifo_cmd );
 309         free( p_sys->psz_path );
 310         goto error;
 311     }
 312
 313     return VLC_SUCCESS;
 314
 315 error:
 316     if( p_sys )
 317     {
 318         if( p_sys->p_rtsp_host ) httpd_HostDelete( p_sys->p_rtsp_host );
 319         free( p_sys->psz_raw_mux );
 320         free( p_sys );
 321     }
 322     vlc_UrlClean( &url );
 323
 324     return VLC_EGENERIC;
 325 }
 326
 327 /*****************************************************************************
 328  * Close:
 329  *****************************************************************************/
 330 static void Close( vlc_object_t * p_this )
 331 {
 332     vod_t *p_vod = (vod_t *)p_this;
 333     vod_sys_t *p_sys = p_vod->p_sys;
 334
 335     /* Stop command thread */
 336     CommandPush( p_vod, RTSP_CMD_TYPE_NONE, NULL, NULL, 0, 0.0, NULL );
 337     vlc_join( p_sys->thread, NULL );
 338
 339     while( block_FifoCount( p_sys->p_fifo_cmd ) > 0 )
 340     {
 341         rtsp_cmd_t cmd;
 342         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 343         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 344         block_Release( p_block_cmd );
 345         if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 346             MediaDel(p_vod, cmd.p_media);
 347         free( cmd.psz_session );
 348         free( cmd.psz_arg );
 349     }
 350     block_FifoRelease( p_sys->p_fifo_cmd );
 351
 352     httpd_HostDelete( p_sys->p_rtsp_host );
 353     var_Destroy( p_this, "rtsp-session-timeout" );
 354     var_Destroy( p_this, "rtsp-throttle-users" );
 355     var_Destroy( p_this, "rtsp-raw-mux" );
 356
 357     /* Check VLM is not buggy */
 358     if( p_sys->i_media > 0 )
 359         msg_Err( p_vod, "rtsp vod leaking %d medias", p_sys->i_media );
 360     TAB_CLEAN( p_sys->i_media, p_sys->media );
 361
 362     free( p_sys->psz_path );
 363     free( p_sys->psz_raw_mux );
 364     free( p_sys );
 365 }
 366
 367 /*****************************************************************************
 368  * Media handling
 369  *****************************************************************************/
 370 static vod_media_t *MediaNew( vod_t *p_vod, const char *psz_name,
 371                               input_item_t *p_item )
 372 {
 373     vod_sys_t *p_sys = p_vod->p_sys;
 374
 375     vod_media_t *p_media = calloc( 1, sizeof(vod_media_t) );
 376     if( !p_media )
 377         return NULL;
 378
 379     p_media->id = p_sys->i_media_id++;
 380     TAB_INIT( p_media->i_es, p_media->es );
 381     p_media->psz_mux = NULL;
 382     TAB_INIT( p_media->i_rtsp, p_media->rtsp );
 383     p_media->b_raw = false;
 384
 385     if( asprintf( &p_media->psz_rtsp_path, "%s%s",
 386                   p_sys->psz_path, psz_name ) <0 )
 387         return NULL;
 388     p_media->p_rtsp_url =
 389         httpd_UrlNewUnique( p_sys->p_rtsp_host, p_media->psz_rtsp_path, NULL,
 390                             NULL, NULL );
 391
 392     if( !p_media->p_rtsp_url )
 393     {
 394         msg_Err( p_vod, "cannot create RTSP url (%s)", p_media->psz_rtsp_path);
 395         free( p_media->psz_rtsp_path );
 396         free( p_media );
 397         return NULL;
 398     }
 399
 400     msg_Dbg( p_vod, "created RTSP url: %s", p_media->psz_rtsp_path );
 401
 402     if( asprintf( &p_media->psz_rtsp_control_v4,
 403                "rtsp://%%s:%d%s/trackID=%%d",
 404                p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 405     {
 406         httpd_UrlDelete( p_media->p_rtsp_url );
 407         free( p_media->psz_rtsp_path );
 408         free( p_media );
 409         return NULL;
 410     }
 411     if( asprintf( &p_media->psz_rtsp_control_v6,
 412                "rtsp://[%%s]:%d%s/trackID=%%d",
 413               p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 414     {
 415         httpd_UrlDelete( p_media->p_rtsp_url );
 416         free( p_media->psz_rtsp_path );
 417         free( p_media );
 418         return NULL;
 419     }
 420
 421     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_SETUP,
 422                     RtspCallback, (void*)p_media );
 423     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_DESCRIBE,
 424                     RtspCallback, (void*)p_media );
 425     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PLAY,
 426                     RtspCallback, (void*)p_media );
 427     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PAUSE,
 428                     RtspCallback, (void*)p_media );
 429     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_GETPARAMETER,
 430                     RtspCallback, (void*)p_media );
 431     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 432                     RtspCallback, (void*)p_media );
 433
 434     p_media->p_vod = p_vod;
 435
 436     vlc_mutex_init( &p_media->lock );
 437
 438     p_media->i_length = input_item_GetDuration( p_item );
 439
 440     vlc_mutex_lock( &p_item->lock );
 441     msg_Dbg( p_vod, "media has %i declared ES", p_item->i_es );
 442     for( int i = 0; i < p_item->i_es; i++ )
 443     {
 444         MediaAddES( p_vod, p_media, p_item->es[i] );
 445     }
 446     vlc_mutex_unlock( &p_item->lock );
 447
 448     CommandPush( p_vod, RTSP_CMD_TYPE_ADD, p_media, NULL, 0, 0.0, NULL );
 449     return p_media;
 450 }
 451
 452 static void MediaAskDel ( vod_t *p_vod, vod_media_t *p_media )
 453 {
 454     CommandPush( p_vod, RTSP_CMD_TYPE_DEL, p_media, NULL, 0, 0.0, NULL );
 455 }
 456
 457 static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
 458 {
 459     vod_sys_t *p_sys = p_vod->p_sys;
 460
 461     msg_Dbg( p_vod, "deleting media: %s", p_media->psz_rtsp_path );
 462
 463     TAB_REMOVE( p_sys->i_media, p_sys->media, p_media );
 464
 465     httpd_UrlDelete( p_media->p_rtsp_url );
 466
 467     while( p_media->i_rtsp > 0 )
 468         RtspClientDel( p_media, p_media->rtsp[0] );
 469     TAB_CLEAN( p_media->i_rtsp, p_media->rtsp );
 470
 471     free( p_media->psz_rtsp_path );
 472     free( p_media->psz_rtsp_control_v6 );
 473     free( p_media->psz_rtsp_control_v4 );
 474
 475     while( p_media->i_es )
 476         MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );
 477     TAB_CLEAN( p_media->i_es, p_media->es );
 478
 479     vlc_mutex_destroy( &p_media->lock );
 480
 481     free( p_media );
 482 }
 483
 484 static int MediaAddES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt )
 485 {
 486     char *psz_urlc;
 487
 488     media_es_t *p_es = calloc( 1, sizeof(media_es_t) );
 489     if( !p_es )
 490         return VLC_ENOMEM;
 491
 492     p_media->psz_mux = NULL;
 493
 494     /* TODO: update SDP, etc... */
 495     if( asprintf( &psz_urlc, "%s/trackID=%d",
 496               p_media->psz_rtsp_path, p_media->i_es ) < 0 )
 497     {
 498         free( p_es );
 499         return VLC_ENOMEM;
 500     }
 501     msg_Dbg( p_vod, "  - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
 502
 503     /* Dynamic payload. No conflict since we put each ES in its own
 504      * RTP session */
 505     p_es->i_payload_type = 96;
 506     p_es->i_clock_rate = 90000;
 507     p_es->i_channels = 1;
 508
 509     switch( p_fmt->i_codec )
 510     {
 511         case VLC_CODEC_S16B:
 512             if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
 513             {
 514                 p_es->i_payload_type = 11;
 515             }
 516             else if( p_fmt->audio.i_channels == 2 &&
 517                      p_fmt->audio.i_rate == 44100 )
 518             {
 519                 p_es->i_payload_type = 10;
 520             }
 521             p_es->psz_ptname = "L16";
 522             p_es->i_clock_rate = p_fmt->audio.i_rate;
 523             p_es->i_channels = p_fmt->audio.i_channels;
 524             break;
 525         case VLC_CODEC_U8:
 526             p_es->psz_ptname = "L8";
 527             p_es->i_clock_rate = p_fmt->audio.i_rate;
 528             p_es->i_channels = p_fmt->audio.i_channels;
 529             break;
 530         case VLC_CODEC_MPGA:
 531             p_es->i_payload_type = 14;
 532             p_es->psz_ptname = "MPA";
 533             break;
 534         case VLC_CODEC_MPGV:
 535             p_es->i_payload_type = 32;
 536             p_es->psz_ptname = "MPV";
 537             break;
 538         case VLC_CODEC_A52:
 539             p_es->psz_ptname = "ac3";
 540             p_es->i_clock_rate = p_fmt->audio.i_rate;
 541             break;
 542         case VLC_CODEC_H263:
 543             p_es->psz_ptname = "H263-1998";
 544             break;
 545         case VLC_CODEC_H264:
 546             p_es->psz_ptname = "H264";
 547             p_es->psz_fmtp = NULL;
 548             /* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
 549             if( p_fmt->i_extra > 0 )
 550             {
 551                 uint8_t *p_buffer = p_fmt->p_extra;
 552                 int     i_buffer = p_fmt->i_extra;
 553                 char    *p_64_sps = NULL;
 554                 char    *p_64_pps = NULL;
 555                 char    hexa[6+1];
 556
 557                 while( i_buffer > 4 )
 558                 {
 559                     int i_offset    = 0;
 560                     int i_size      = 0;
 561
 562                     while( p_buffer[0] != 0 || p_buffer[1] != 0 ||
 563                            p_buffer[2] != 1 )
 564                     {
 565                         p_buffer++;
 566                         i_buffer--;
 567                         if( i_buffer == 0 ) break;
 568                     }
 569
 570                     if( i_buffer < 4 || memcmp(p_buffer, "\x00\x00\x01", 3 ) )
 571                     {
 572                         /* No startcode found.. */
 573                         break;
 574                     }
 575                     p_buffer += 3;
 576                     i_buffer -= 3;
 577
 578                     const int i_nal_type = p_buffer[0]&0x1f;
 579
 580                     i_size = i_buffer;
 581                     for( i_offset = 0; i_offset+2 < i_buffer ; i_offset++)
 582                     {
 583                         if( !memcmp(p_buffer + i_offset, "\x00\x00\x01", 3 ) )
 584                         {
 585                             /* we found another startcode */
 586                             while( i_offset > 0 && 0 == p_buffer[ i_offset - 1 ] )
 587                                 i_offset--;
 588                             i_size = i_offset;
 589                             break;
 590                         }
 591                     }
 592
 593                     if( i_size == 0 )
 594                     {
 595                         /* No-info found in nal */
 596                         continue;
 597                     }
 598
 599                     if( i_nal_type == 7 )
 600                     {
 601                         free( p_64_sps );
 602                         p_64_sps = vlc_b64_encode_binary( p_buffer, i_size );
 603                         /* XXX: nothing ensures that i_size >= 4 ?? */
 604                         sprintf_hexa( hexa, &p_buffer[1], 3 );
 605                     }
 606                     else if( i_nal_type == 8 )
 607                     {
 608                         free( p_64_pps );
 609                         p_64_pps = vlc_b64_encode_binary( p_buffer, i_size );
 610                     }
 611                     i_buffer -= i_size;
 612                     p_buffer += i_size;
 613                 }
 614                 /* */
 615                 if( p_64_sps && p_64_pps )
 616                 {
 617                     if( asprintf( &p_es->psz_fmtp,
 618                                   "packetization-mode=1;profile-level-id=%s;"
 619                                   "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
 620                                   p_64_pps ) < 0 )
 621                     {
 622                         free( p_64_sps );
 623                         free( p_64_pps );
 624                         free( psz_urlc );
 625                         free( p_es );
 626                         return VLC_ENOMEM;
 627                     }
 628                 }
 629                 free( p_64_sps );
 630                 free( p_64_pps );
 631             }
 632             if( !p_es->psz_fmtp )
 633                 p_es->psz_fmtp = strdup( "packetization-mode=1" );
 634             break;
 635         case VLC_CODEC_MP4V:
 636             p_es->psz_ptname = "MP4V-ES";
 637             if( p_fmt->i_extra > 0 )
 638             {
 639                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 640                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 641                 if( asprintf( &p_es->psz_fmtp,
 642                               "profile-level-id=3; config=%s;", p_hexa ) == -1 )
 643                     p_es->psz_fmtp = NULL;
 644                 free( p_hexa );
 645             }
 646             break;
 647         case VLC_CODEC_MP4A:
 648             p_es->psz_ptname = "mpeg4-generic";
 649             p_es->i_clock_rate = p_fmt->audio.i_rate;
 650             if( p_fmt->i_extra > 0 )
 651             {
 652                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 653                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 654                 if( asprintf( &p_es->psz_fmtp,
 655                               "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
 656                               "config=%s; SizeLength=13;IndexLength=3; "
 657                               "IndexDeltaLength=3; Profile=1;", p_hexa ) == -1 )
 658                     p_es->psz_fmtp = NULL;
 659                 free( p_hexa );
 660             }
 661             break;
 662         case VLC_FOURCC( 'm', 'p', '2', 't' ):
 663             p_media->psz_mux = "ts";
 664             p_es->i_payload_type = 33;
 665             p_es->psz_ptname = "MP2T";
 666             break;
 667         case VLC_FOURCC( 'm', 'p', '2', 'p' ):
 668             p_media->psz_mux = "ps";
 669             p_es->psz_ptname = "MP2P";
 670             break;
 671         case VLC_CODEC_AMR_NB:
 672             p_es->psz_ptname = "AMR";
 673             p_es->i_clock_rate = 8000;
 674             if(p_fmt->audio.i_channels == 2 )
 675                 p_es->i_channels = 2;
 676             p_es->psz_fmtp = strdup( "octet-align=1" );
 677             break;
 678         case VLC_CODEC_AMR_WB:
 679             p_es->psz_ptname = "AMR-WB";
 680             p_es->i_clock_rate = 16000;
 681             if(p_fmt->audio.i_channels == 2 )
 682                 p_es->i_channels = 2;
 683             p_es->psz_fmtp = strdup( "octet-align=1" );
 684             break;
 685
 686         default:
 687             msg_Err( p_vod, "cannot add this stream (unsupported "
 688                     "codec: %4.4s)", (char*)&p_fmt->i_codec );
 689             free( psz_urlc );
 690             free( p_es );
 691             return VLC_EGENERIC;
 692     }
 693
 694     p_es->p_rtsp_url =
 695         httpd_UrlNewUnique( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL,
 696                             NULL );
 697
 698     if( !p_es->p_rtsp_url )
 699     {
 700         msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
 701         free( psz_urlc );
 702         free( p_es );
 703         return VLC_EGENERIC;
 704     }
 705     free( psz_urlc );
 706
 707     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
 708                     RtspCallbackES, (void*)p_es );
 709     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 710                     RtspCallbackES, (void*)p_es );
 711     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
 712                     RtspCallbackES, (void*)p_es );
 713     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
 714                     RtspCallbackES, (void*)p_es );
 715
 716     es_format_Copy( &p_es->fmt, p_fmt );
 717     p_es->p_vod = p_vod;
 718     p_es->p_media = p_media;
 719
 720     vlc_mutex_lock( &p_media->lock );
 721     TAB_APPEND( p_media->i_es, p_media->es, p_es );
 722     vlc_mutex_unlock( &p_media->lock );
 723
 724     return VLC_SUCCESS;
 725 }
 726
 727 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
 728 {
 729     media_es_t *p_es = NULL;
 730
 731     /* Find the ES */
 732     for( int i = 0; i < p_media->i_es; i++ )
 733     {
 734         if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
 735             p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
 736             p_media->es[i]->fmt.i_id == p_fmt->i_id )
 737         {
 738             p_es = p_media->es[i];
 739         }
 740     }
 741     if( !p_es ) return;
 742
 743     msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );
 744
 745     vlc_mutex_lock( &p_media->lock );
 746     TAB_REMOVE( p_media->i_es, p_media->es, p_es );
 747     vlc_mutex_unlock( &p_media->lock );
 748
 749     free( p_es->psz_fmtp );
 750
 751     if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
 752     es_format_Clean( &p_es->fmt );
 753     free( p_es );
 754 }
 755
 756 static void CommandPush( vod_t *p_vod, rtsp_cmd_type_t i_type, vod_media_t *p_media, const char *psz_session, int64_t i_arg,
 757                          double f_arg, const char *psz_arg )
 758 {
 759     rtsp_cmd_t cmd;
 760     block_t *p_cmd;
 761
 762     memset( &cmd, 0, sizeof(cmd) );
 763     cmd.i_type = i_type;
 764     cmd.p_media = p_media;
 765     if( p_media )
 766         cmd.i_media_id = p_media->id;
 767     if( psz_session )
 768         cmd.psz_session = strdup(psz_session);
 769     cmd.i_arg = i_arg;
 770     cmd.f_arg = f_arg;
 771     if( psz_arg )
 772         cmd.psz_arg = strdup(psz_arg);
 773
 774     p_cmd = block_New( p_vod, sizeof(rtsp_cmd_t) );
 775     memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
 776
 777     block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
 778 }
 779
 780 static void* CommandThread( void *obj )
 781 {
 782     vod_t *p_vod = (vod_t*)obj;
 783     vod_sys_t *p_sys = p_vod->p_sys;
 784     int canc = vlc_savecancel ();
 785
 786     for( ;; )
 787     {
 788         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 789         rtsp_cmd_t cmd;
 790         vod_media_t *p_media = NULL;
 791         int i;
 792
 793         if( !p_block_cmd )
 794             break;
 795
 796         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 797         block_Release( p_block_cmd );
 798
 799         if( cmd.i_type == RTSP_CMD_TYPE_NONE )
 800             break;
 801
 802         if ( cmd.i_type == RTSP_CMD_TYPE_ADD )
 803         {
 804             TAB_APPEND( p_sys->i_media, p_sys->media, cmd.p_media );
 805             goto next;
 806         }
 807
 808         if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 809         {
 810             MediaDel(p_vod, cmd.p_media);
 811             goto next;
 812         }
 813
 814         /* */
 815         for( i = 0; i < p_sys->i_media; i++ )
 816         {
 817             if( p_sys->media[i]->id == cmd.i_media_id )
 818                 break;
 819         }
 820         if( i >= p_sys->i_media )
 821         {
 822             goto next;
 823         }
 824         p_media = p_sys->media[i];
 825
 826         switch( cmd.i_type )
 827         {
 828         case RTSP_CMD_TYPE_PLAY:
 829             cmd.i_arg = -1;
 830             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 831                               VOD_MEDIA_PLAY, cmd.psz_arg, &cmd.i_arg );
 832             break;
 833         case RTSP_CMD_TYPE_PAUSE:
 834             cmd.i_arg = -1;
 835             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 836                               VOD_MEDIA_PAUSE, &cmd.i_arg );
 837             break;
 838
 839         case RTSP_CMD_TYPE_STOP:
 840             vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
 841             break;
 842
 843         case RTSP_CMD_TYPE_SEEK:
 844             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 845                               VOD_MEDIA_SEEK, cmd.i_arg );
 846             break;
 847
 848         case RTSP_CMD_TYPE_REWIND:
 849             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 850                               VOD_MEDIA_REWIND, cmd.f_arg );
 851             break;
 852
 853         case RTSP_CMD_TYPE_FORWARD:
 854             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 855                               VOD_MEDIA_FORWARD, cmd.f_arg );
 856             break;
 857
 858         default:
 859             break;
 860         }
 861
 862     next:
 863         free( cmd.psz_session );
 864         free( cmd.psz_arg );
 865     }
 866
 867     vlc_restorecancel (canc);
 868     return NULL;
 869 }
 870
 871 /****************************************************************************
 872  * RTSP server implementation
 873  ****************************************************************************/
 874 static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
 875 {
 876     rtsp_client_t *p_rtsp = calloc( 1, sizeof(rtsp_client_t) );
 877
 878     if( !p_rtsp )
 879         return NULL;
 880     p_rtsp->es = 0;
 881
 882     p_rtsp->psz_session = psz_session;
 883     TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 884
 885     p_media->p_vod->p_sys->i_connections++;
 886     msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
 887              psz_session, p_media->p_vod->p_sys->i_throttle_users );
 888
 889     return p_rtsp;
 890 }
 891
 892 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
 893 {
 894     for( int i = 0; psz_session && i < p_media->i_rtsp; i++ )
 895     {
 896         if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
 897             return p_media->rtsp[i];
 898     }
 899
 900     return NULL;
 901 }
 902
 903 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
 904 {
 905     p_media->p_vod->p_sys->i_connections--;
 906     msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
 907              p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
 908
 909     while( p_rtsp->i_es )
 910     {
 911         p_rtsp->i_es--;
 912         free( p_rtsp->es[p_rtsp->i_es] );
 913     }
 914     free( p_rtsp->es );
 915
 916     TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 917
 918     free( p_rtsp->psz_session );
 919     free( p_rtsp );
 920 }
 921
 922
 923 static int64_t ParseNPT (const char *str)
 924 {
 925     locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
 926     locale_t oldloc = uselocale (loc);
 927     unsigned hour, min;
 928     float sec;
 929
 930     if (sscanf (str, "%u:%u:%f", &hour, &min, &sec) == 3)
 931         sec += ((hour * 60) + min) * 60;
 932     else
 933     if (sscanf (str, "%f", &sec) != 1)
 934         sec = 0.;
 935
 936     if (loc != (locale_t)0)
 937     {
 938         uselocale (oldloc);
 939         freelocale (loc);
 940     }
 941     return sec * CLOCK_FREQ;
 942 }
 943
 944
 945 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
 946                          httpd_message_t *answer, const httpd_message_t *query )
 947 {
 948     vod_media_t *p_media = (vod_media_t*)p_args;
 949     vod_t *p_vod = p_media->p_vod;
 950     const char *psz_transport = NULL;
 951     const char *psz_playnow = NULL; /* support option: x-playNow */
 952     const char *psz_session = NULL;
 953     const char *psz_cseq = NULL;
 954     rtsp_client_t *p_rtsp;
 955     int i_cseq = 0;
 956
 957     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
 958
 959     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
 960
 961     answer->i_proto   = HTTPD_PROTO_RTSP;
 962     answer->i_version = query->i_version;
 963     answer->i_type    = HTTPD_MSG_ANSWER;
 964     answer->i_body    = 0;
 965     answer->p_body    = NULL;
 966
 967     switch( query->i_type )
 968     {
 969         case HTTPD_MSG_SETUP:
 970         {
 971             psz_playnow = httpd_MsgGet( query, "x-playNow" );
 972             psz_transport = httpd_MsgGet( query, "Transport" );
 973             if( psz_transport == NULL )
 974             {
 975                 answer->i_status = 400;
 976                 break;
 977             }
 978             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
 979
 980             if( strstr( psz_transport, "unicast" ) &&
 981                 strstr( psz_transport, "client_port=" ) )
 982             {
 983                 rtsp_client_t *p_rtsp = NULL;
 984                 char ip[NI_MAXNUMERICHOST];
 985                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
 986                                    strlen("client_port=") );
 987
 988                 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
 989                     strstr( psz_transport, "RAW/RAW/UDP" ) )
 990                 {
 991                     p_media->psz_mux = p_vod->p_sys->psz_raw_mux;
 992                     p_media->b_raw = true;
 993                 }
 994
 995                 if( httpd_ClientIP( cl, ip ) == NULL )
 996                 {
 997                     answer->i_status = 500;
 998                     answer->i_body = 0;
 999                     answer->p_body = NULL;
1000                     break;
1001                 }
1002
1003                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1004                          ip, i_port );
1005
1006                 psz_session = httpd_MsgGet( query, "Session" );
1007                 if( !psz_session || !*psz_session )
1008                 {
1009                     char *psz_new;
1010                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1011                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1012                     {
1013                         answer->i_status = 503;
1014                         answer->i_body = 0;
1015                         answer->p_body = NULL;
1016                         break;
1017                     }
1018 #warning Should use secure randomness here! (spoofing risk)
1019                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1020                         return VLC_ENOMEM;
1021                     psz_session = psz_new;
1022
1023                     p_rtsp = RtspClientNew( p_media, psz_new );
1024                     if( !p_rtsp )
1025                     {
1026                         answer->i_status = 454;
1027                         answer->i_body = 0;
1028                         answer->p_body = NULL;
1029                         break;
1030                     }
1031                 }
1032                 else
1033                 {
1034                     p_rtsp = RtspClientGet( p_media, psz_session );
1035                     if( !p_rtsp )
1036                     {
1037                         answer->i_status = 454;
1038                         answer->i_body = 0;
1039                         answer->p_body = NULL;
1040                         break;
1041                     }
1042                 }
1043
1044                 answer->i_status = 200;
1045                 answer->i_body = 0;
1046                 answer->p_body = NULL;
1047
1048                 if( p_media->b_raw )
1049                 {
1050                     p_rtsp->i_port_raw = i_port;
1051
1052                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1053                     {
1054                         httpd_MsgAdd( answer, "Transport",
1055                                       "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1056                                       i_port, i_port + 1 );
1057                     }
1058                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1059                     {
1060                         httpd_MsgAdd( answer, "Transport",
1061                                       "RAW/RAW/UDP;unicast;client_port=%d-%d",
1062                                       i_port, i_port + 1 );
1063                     }
1064                 }
1065                 else
1066                     httpd_MsgAdd( answer, "Transport",
1067                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1068                                   i_port, i_port + 1 );
1069             }
1070             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1071             {
1072                 answer->i_status = 461;
1073                 answer->i_body = 0;
1074                 answer->p_body = NULL;
1075             }
1076
1077             /* Intentional fall-through on x-playNow option in RTSP request */
1078             if( !psz_playnow )
1079                 break;
1080         }
1081
1082         case HTTPD_MSG_PLAY:
1083         {
1084             char *psz_output, ip[NI_MAXNUMERICHOST];
1085             int i_port_audio = 0, i_port_video = 0;
1086
1087             /* for now only multicast so easy */
1088             if( !psz_playnow )
1089             {
1090                 answer->i_status = 200;
1091                 answer->i_body = 0;
1092                 answer->p_body = NULL;
1093             }
1094
1095             if( !psz_session )
1096                 psz_session = httpd_MsgGet( query, "Session" );
1097             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1098
1099             p_rtsp = RtspClientGet( p_media, psz_session );
1100             if( !p_rtsp )
1101             {
1102                 answer->i_status = 500;
1103                 answer->i_body = 0;
1104                 answer->p_body = NULL;
1105                 break;
1106             }
1107
1108             if( p_rtsp->b_playing )
1109             {
1110                 const char *psz_position = httpd_MsgGet( query, "Range" );
1111                 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1112                 if( psz_position )
1113                     psz_position = strstr( psz_position, "npt=" );
1114                 if( psz_position && !psz_scale )
1115                 {
1116                     int64_t i_time = ParseNPT (psz_position + 4);
1117                     msg_Dbg( p_vod, "seeking request: %s", psz_position );
1118                     CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1119                                  psz_session, i_time, 0.0, NULL );
1120                 }
1121                 else if( psz_scale )
1122                 {
1123                     double f_scale = 0.0;
1124                     char *end;
1125
1126                     f_scale = us_strtod( psz_scale, &end );
1127                     if( end > psz_scale )
1128                     {
1129                         f_scale = (f_scale * 30.0);
1130                         if( psz_scale[0] == '-' ) /* rewind */
1131                         {
1132                             msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1133                             CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
1134                                          psz_session, 0, f_scale, NULL );
1135                         }
1136                         else if(psz_scale[0] != '1' ) /* fast-forward */
1137                         {
1138                             msg_Dbg( p_vod, "fastforward request: %s",
1139                                      psz_scale );
1140                             CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
1141                                          psz_session, 0, f_scale, NULL );
1142                         }
1143                     }
1144                 }
1145                 /* unpause, in case it's paused */
1146                 CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1147                              0, 0.0, "" );
1148                 break;
1149             }
1150
1151             if( httpd_ClientIP( cl, ip ) == NULL ) break;
1152
1153             p_rtsp->b_playing = true;
1154
1155             /* FIXME for != 1 video and 1 audio */
1156             for( int i = 0; i < p_rtsp->i_es; i++ )
1157             {
1158                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1159                     i_port_audio = p_rtsp->es[i]->i_port;
1160                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1161                     i_port_video = p_rtsp->es[i]->i_port;
1162             }
1163
1164             if( p_media->psz_mux )
1165             {
1166                 if( p_media->b_raw )
1167                 {
1168                     if( asprintf( &psz_output,
1169                               "std{access=udp,dst=%s:%i,mux=%s}",
1170                               ip, p_rtsp->i_port_raw, p_media->psz_mux ) < 0 )
1171                         return VLC_ENOMEM;
1172                 }
1173                 else
1174                 {
1175                     if( asprintf( &psz_output,
1176                               "rtp{dst=%s,port=%i,mux=%s}",
1177                               ip, i_port_video, p_media->psz_mux ) < 0 )
1178                         return VLC_ENOMEM;
1179                 }
1180             }
1181             else
1182             {
1183                 if( asprintf( &psz_output,
1184                               "rtp{dst=%s,port-video=%i,port-audio=%i}",
1185                               ip, i_port_video, i_port_audio ) < 0 )
1186                     return VLC_ENOMEM;
1187             }
1188
1189             CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1190                          0, 0.0, psz_output );
1191             free( psz_output );
1192             break;
1193         }
1194
1195         case HTTPD_MSG_DESCRIBE:
1196         {
1197             char *psz_sdp =
1198                 SDPGenerate( p_media, cl );
1199
1200             if( psz_sdp != NULL )
1201             {
1202                 answer->i_status = 200;
1203                 httpd_MsgAdd( answer, "Content-type",  "%s",
1204                               "application/sdp" );
1205
1206                 answer->p_body = (uint8_t *)psz_sdp;
1207                 answer->i_body = strlen( psz_sdp );
1208             }
1209             else
1210             {
1211                 answer->i_status = 500;
1212                 answer->p_body = NULL;
1213                 answer->i_body = 0;
1214             }
1215             break;
1216         }
1217
1218         case HTTPD_MSG_PAUSE:
1219             psz_session = httpd_MsgGet( query, "Session" );
1220             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1221
1222             p_rtsp = RtspClientGet( p_media, psz_session );
1223             if( !p_rtsp ) break;
1224
1225             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1226                          0, 0.0, NULL );
1227
1228             answer->i_status = 200;
1229             answer->i_body = 0;
1230             answer->p_body = NULL;
1231             break;
1232
1233         case HTTPD_MSG_TEARDOWN:
1234             /* for now only multicast so easy again */
1235             answer->i_status = 200;
1236             answer->i_body = 0;
1237             answer->p_body = NULL;
1238
1239             psz_session = httpd_MsgGet( query, "Session" );
1240             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1241
1242             p_rtsp = RtspClientGet( p_media, psz_session );
1243             if( !p_rtsp ) break;
1244
1245             CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1246                          0, 0.0, NULL );
1247             RtspClientDel( p_media, p_rtsp );
1248             break;
1249
1250         case HTTPD_MSG_GETPARAMETER:
1251             answer->i_status = 200;
1252             answer->i_body = 0;
1253             answer->p_body = NULL;
1254             break;
1255
1256         default:
1257             return VLC_EGENERIC;
1258     }
1259
1260     httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1261     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1262     psz_cseq = httpd_MsgGet( query, "Cseq" );
1263     psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1264     httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1265     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1266
1267     if( psz_session )
1268     {
1269          if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
1270              httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1271                p_media->p_vod->p_sys->i_session_timeout );
1272          else
1273               httpd_MsgAdd( answer, "Session", "%s", psz_session );
1274     }
1275
1276     return VLC_SUCCESS;
1277 }
1278
1279 static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1280                            httpd_message_t *answer,
1281                            const httpd_message_t *query )
1282 {
1283     media_es_t *p_es = (media_es_t*)p_args;
1284     vod_media_t *p_media = p_es->p_media;
1285     vod_t *p_vod = p_media->p_vod;
1286     rtsp_client_t *p_rtsp = NULL;
1287     const char *psz_transport = NULL;
1288     const char *psz_playnow = NULL; /* support option: x-playNow */
1289     const char *psz_session = NULL;
1290     const char *psz_position = NULL;
1291     const char *psz_cseq = NULL;
1292     int i_cseq = 0;
1293
1294     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1295
1296     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1297
1298     answer->i_proto   = HTTPD_PROTO_RTSP;
1299     answer->i_version = query->i_version;
1300     answer->i_type    = HTTPD_MSG_ANSWER;
1301     answer->i_body    = 0;
1302     answer->p_body      = NULL;
1303
1304     switch( query->i_type )
1305     {
1306         case HTTPD_MSG_SETUP:
1307             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1308             psz_transport = httpd_MsgGet( query, "Transport" );
1309
1310             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1311
1312             if( strstr( psz_transport, "unicast" ) &&
1313                 strstr( psz_transport, "client_port=" ) )
1314             {
1315                 rtsp_client_t *p_rtsp = NULL;
1316                 rtsp_client_es_t *p_rtsp_es = NULL;
1317                 char ip[NI_MAXNUMERICHOST];
1318                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
1319                                    strlen("client_port=") );
1320
1321                 if( httpd_ClientIP( cl, ip ) == NULL )
1322                 {
1323                     answer->i_status = 500;
1324                     answer->i_body = 0;
1325                     answer->p_body = NULL;
1326                     break;
1327                 }
1328
1329                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1330                         ip, i_port );
1331
1332                 psz_session = httpd_MsgGet( query, "Session" );
1333                 if( !psz_session || !*psz_session )
1334                 {
1335                     char *psz_new;
1336                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1337                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1338                     {
1339                         answer->i_status = 503;
1340                         answer->i_body = 0;
1341                         answer->p_body = NULL;
1342                         break;
1343                     }
1344 #warning Session ID should be securely random (spoofing risk)
1345                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1346                         return VLC_ENOMEM;
1347                     psz_session = psz_new;
1348
1349                     p_rtsp = RtspClientNew( p_media, psz_new );
1350                     if( !p_rtsp )
1351                     {
1352                         answer->i_status = 454;
1353                         answer->i_body = 0;
1354                         answer->p_body = NULL;
1355                         break;
1356                     }
1357                 }
1358                 else
1359                 {
1360                     p_rtsp = RtspClientGet( p_media, psz_session );
1361                     if( !p_rtsp )
1362                     {
1363                         answer->i_status = 454;
1364                         answer->i_body = 0;
1365                         answer->p_body = NULL;
1366                         break;
1367                     }
1368                 }
1369
1370                 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1371                 if( !p_rtsp_es )
1372                 {
1373                     answer->i_status = 500;
1374                     answer->i_body = 0;
1375                     answer->p_body = NULL;
1376                     break;
1377                 }
1378                 p_rtsp_es->i_port = i_port;
1379                 p_rtsp_es->p_media_es = p_es;
1380                 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1381
1382                 answer->i_status = 200;
1383                 answer->i_body = 0;
1384                 answer->p_body = NULL;
1385
1386                 if( p_media->b_raw )
1387                 {
1388                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1389                     {
1390                         httpd_MsgAdd( answer, "Transport",
1391                                      "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1392                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1393                     }
1394                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1395                     {
1396                         httpd_MsgAdd( answer, "Transport",
1397                                      "RAW/RAW/UDP;unicast;client_port=%d-%d",
1398                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1399                     }
1400                 }
1401                 else
1402                 {
1403                     httpd_MsgAdd( answer, "Transport",
1404                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1405                                   p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1406                 }
1407             }
1408             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1409             {
1410                 answer->i_status = 461;
1411                 answer->i_body = 0;
1412                 answer->p_body = NULL;
1413             }
1414
1415             /* Intentional fall-through on x-playNow option in RTSP request */
1416             if( !psz_playnow )
1417                 break;
1418
1419         case HTTPD_MSG_PLAY:
1420             /* This is kind of a kludge. Should we only support Aggregate
1421              * Operations ? */
1422             psz_session = httpd_MsgGet( query, "Session" );
1423             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1424
1425             p_rtsp = RtspClientGet( p_media, psz_session );
1426
1427             psz_position = httpd_MsgGet( query, "Range" );
1428             if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1429             if( psz_position )
1430             {
1431                 int64_t i_time = ParseNPT (psz_position + 4);
1432                 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1433                 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1434                              psz_session, i_time, 0.0, NULL );
1435             }
1436
1437             if( !psz_playnow )
1438             {
1439                 answer->i_status = 200;
1440                 answer->i_body = 0;
1441                 answer->p_body = NULL;
1442             }
1443             break;
1444
1445         case HTTPD_MSG_TEARDOWN:
1446             answer->i_status = 200;
1447             answer->i_body = 0;
1448             answer->p_body = NULL;
1449
1450             psz_session = httpd_MsgGet( query, "Session" );
1451             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1452
1453             p_rtsp = RtspClientGet( p_media, psz_session );
1454             if( !p_rtsp ) break;
1455
1456             for( int i = 0; i < p_rtsp->i_es; i++ )
1457             {
1458                 if( p_rtsp->es[i]->p_media_es == p_es )
1459                 {
1460                     TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, p_rtsp->es[i] );
1461                     break;
1462                 }
1463             }
1464
1465             if( !p_rtsp->i_es )
1466             {
1467                 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1468                              0, 0.0, NULL );
1469                 RtspClientDel( p_media, p_rtsp );
1470             }
1471             break;
1472
1473         case HTTPD_MSG_PAUSE:
1474             /* This is kind of a kludge. Should we only support Aggregate
1475              * Operations ? */
1476             psz_session = httpd_MsgGet( query, "Session" );
1477             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1478
1479             p_rtsp = RtspClientGet( p_media, psz_session );
1480             if( !p_rtsp ) break;
1481
1482             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1483                          0, 0.0, NULL );
1484
1485             answer->i_status = 200;
1486             answer->i_body = 0;
1487             answer->p_body = NULL;
1488             break;
1489
1490         default:
1491             return VLC_EGENERIC;
1492             break;
1493     }
1494
1495     httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1496     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1497     psz_cseq = httpd_MsgGet( query, "Cseq" );
1498     if (psz_cseq)
1499         i_cseq = atoi( psz_cseq );
1500     else
1501         i_cseq = 0;
1502     httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1503     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1504
1505     if( psz_session )
1506         httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1507
1508     return VLC_SUCCESS;
1509 }
1510
1511 /*****************************************************************************
1512  * SDPGenerate: TODO
1513  * FIXME: need to be moved to a common place ?
1514  *****************************************************************************/
1515 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1516 {
1517     char *psz_sdp, ip[NI_MAXNUMERICHOST];
1518     const char *psz_control;
1519
1520     if( httpd_ServerIP( cl, ip ) == NULL )
1521         return NULL;
1522
1523     bool ipv6 = ( strchr( ip, ':' ) != NULL );
1524
1525     psz_control = ipv6 ? p_media->psz_rtsp_control_v6
1526                        : p_media->psz_rtsp_control_v4;
1527
1528     /* Dummy destination address for RTSP */
1529     struct sockaddr_storage dst;
1530     socklen_t dstlen = ipv6 ? sizeof( struct sockaddr_in6 )
1531                             : sizeof( struct sockaddr_in );
1532     memset (&dst, 0, dstlen);
1533     dst.ss_family = ipv6 ? AF_INET6 : AF_INET;
1534 #ifdef HAVE_SA_LEN
1535     dst.ss_len = dstlen;
1536 #endif
1537
1538     psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_media->p_vod ), "sout-rtp-",
1539                              NULL, 0, (struct sockaddr *)&dst, dstlen );
1540     if( psz_sdp == NULL )
1541         return NULL;
1542
1543     if( p_media->i_length > 0 )
1544     {
1545         lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
1546         sdp_AddAttribute( &psz_sdp, "range","npt=0-%lld.%03u", d.quot,
1547                           (unsigned)d.rem );
1548     }
1549
1550     for( int i = 0; i < p_media->i_es; i++ )
1551     {
1552         media_es_t *p_es = p_media->es[i];
1553         const char *mime_major; /* major MIME type */
1554
1555         switch( p_es->fmt.i_cat )
1556         {
1557             case VIDEO_ES:
1558                 mime_major = "video";
1559                 break;
1560             case AUDIO_ES:
1561                 mime_major = "audio";
1562                 break;
1563             case SPU_ES:
1564                 mime_major = "text";
1565                 break;
1566             default:
1567                 continue;
1568         }
1569
1570         sdp_AddMedia( &psz_sdp, mime_major, "RTP/AVP", 0 /* p_es->i_port */,
1571                       p_es->i_payload_type, false, 0,
1572                       p_es->psz_ptname, p_es->i_clock_rate, p_es->i_channels,
1573                       p_es->psz_fmtp );
1574
1575         sdp_AddAttribute( &psz_sdp, "control", psz_control, ip, i );
1576     }
1577
1578     return psz_sdp;
1579 }