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                 {
 575                     int i_offset    = 0;
 576                     int i_size      = 0;
 577
 578                     while( p_buffer[0] != 0 || p_buffer[1] != 0 ||
 579                            p_buffer[2] != 1 )
 580                     {
 581                         p_buffer++;
 582                         i_buffer--;
 583                         if( i_buffer == 0 ) break;
 584                     }
 585
 586                     if( i_buffer < 4 || memcmp(p_buffer, "\x00\x00\x01", 3 ) )
 587                     {
 588                         /* No startcode found.. */
 589                         break;
 590                     }
 591                     p_buffer += 3;
 592                     i_buffer -= 3;
 593
 594                     const int i_nal_type = p_buffer[0]&0x1f;
 595
 596                     i_size = i_buffer;
 597                     for( i_offset = 0; i_offset+2 < i_buffer ; i_offset++)
 598                     {
 599                         if( !memcmp(p_buffer + i_offset, "\x00\x00\x01", 3 ) )
 600                         {
 601                             /* we found another startcode */
 602                             while( i_offset > 0 && 0 == p_buffer[ i_offset - 1 ] )
 603                                 i_offset--;
 604                             i_size = i_offset;
 605                             break;
 606                         }
 607                     }
 608
 609                     if( i_size == 0 )
 610                     {
 611                         /* No-info found in nal */
 612                         continue;
 613                     }
 614
 615                     if( i_nal_type == 7 )
 616                     {
 617                         free( p_64_sps );
 618                         p_64_sps = vlc_b64_encode_binary( p_buffer, i_size );
 619                         /* XXX: nothing ensures that i_size >= 4 ?? */
 620                         sprintf_hexa( hexa, &p_buffer[1], 3 );
 621                     }
 622                     else if( i_nal_type == 8 )
 623                     {
 624                         free( p_64_pps );
 625                         p_64_pps = vlc_b64_encode_binary( p_buffer, i_size );
 626                     }
 627                     i_buffer -= i_size;
 628                     p_buffer += i_size;
 629                 }
 630                 /* */
 631                 if( p_64_sps && p_64_pps )
 632                 {
 633                     if( asprintf( &p_es->psz_fmtp,
 634                                   "packetization-mode=1;profile-level-id=%s;"
 635                                   "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
 636                                   p_64_pps ) < 0 )
 637                     {
 638                         free( p_64_sps );
 639                         free( p_64_pps );
 640                         free( psz_urlc );
 641                         free( p_es );
 642                         return VLC_ENOMEM;
 643                     }
 644                 }
 645                 free( p_64_sps );
 646                 free( p_64_pps );
 647             }
 648             if( !p_es->psz_fmtp )
 649                 p_es->psz_fmtp = strdup( "packetization-mode=1" );
 650             break;
 651         case VLC_CODEC_MP4V:
 652             p_es->i_payload_type = p_media->i_payload_type++;
 653             p_es->psz_ptname = "MP4V-ES";
 654             if( p_fmt->i_extra > 0 )
 655             {
 656                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 657                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 658                 if( asprintf( &p_es->psz_fmtp,
 659                               "profile-level-id=3; config=%s;", p_hexa ) == -1 )
 660                     p_es->psz_fmtp = NULL;
 661                 free( p_hexa );
 662             }
 663             break;
 664         case VLC_CODEC_MP4A:
 665             p_es->i_payload_type = p_media->i_payload_type++;
 666             p_es->psz_ptname = "mpeg4-generic";
 667             p_es->i_clock_rate = p_fmt->audio.i_rate;
 668             if( p_fmt->i_extra > 0 )
 669             {
 670                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 671                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 672                 if( asprintf( &p_es->psz_fmtp,
 673                               "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
 674                               "config=%s; SizeLength=13;IndexLength=3; "
 675                               "IndexDeltaLength=3; Profile=1;", p_hexa ) == -1 )
 676                     p_es->psz_fmtp = NULL;
 677                 free( p_hexa );
 678             }
 679             break;
 680         case VLC_FOURCC( 'm', 'p', '2', 't' ):
 681             p_media->psz_mux = "ts";
 682             p_es->i_payload_type = 33;
 683             p_es->psz_ptname = "MP2T";
 684             break;
 685         case VLC_FOURCC( 'm', 'p', '2', 'p' ):
 686             p_media->psz_mux = "ps";
 687             p_es->i_payload_type = p_media->i_payload_type++;
 688             p_es->psz_ptname = "MP2P";
 689             break;
 690         case VLC_CODEC_AMR_NB:
 691             p_es->i_payload_type = p_media->i_payload_type++;
 692             p_es->psz_ptname = "AMR";
 693             p_es->i_clock_rate = 8000;
 694             if(p_fmt->audio.i_channels == 2 )
 695                 p_es->i_channels = 2;
 696             p_es->psz_fmtp = strdup( "octet-align=1" );
 697             break;
 698         case VLC_CODEC_AMR_WB:
 699             p_es->i_payload_type = p_media->i_payload_type++;
 700             p_es->psz_ptname = "AMR-WB";
 701             p_es->i_clock_rate = 16000;
 702             if(p_fmt->audio.i_channels == 2 )
 703                 p_es->i_channels = 2;
 704             p_es->psz_fmtp = strdup( "octet-align=1" );
 705             break;
 706
 707         default:
 708             msg_Err( p_vod, "cannot add this stream (unsupported "
 709                     "codec: %4.4s)", (char*)&p_fmt->i_codec );
 710             free( psz_urlc );
 711             free( p_es );
 712             return VLC_EGENERIC;
 713     }
 714
 715     p_es->p_rtsp_url =
 716         httpd_UrlNewUnique( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL,
 717                             NULL );
 718
 719     if( !p_es->p_rtsp_url )
 720     {
 721         msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
 722         free( psz_urlc );
 723         free( p_es );
 724         return VLC_EGENERIC;
 725     }
 726     free( psz_urlc );
 727
 728     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
 729                     RtspCallbackES, (void*)p_es );
 730     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 731                     RtspCallbackES, (void*)p_es );
 732     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
 733                     RtspCallbackES, (void*)p_es );
 734     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
 735                     RtspCallbackES, (void*)p_es );
 736
 737     es_format_Copy( &p_es->fmt, p_fmt );
 738     p_es->p_vod = p_vod;
 739     p_es->p_media = p_media;
 740
 741     vlc_mutex_lock( &p_media->lock );
 742     TAB_APPEND( p_media->i_es, p_media->es, p_es );
 743     vlc_mutex_unlock( &p_media->lock );
 744
 745     return VLC_SUCCESS;
 746 }
 747
 748 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
 749 {
 750     media_es_t *p_es = NULL;
 751
 752     /* Find the ES */
 753     for( int i = 0; i < p_media->i_es; i++ )
 754     {
 755         if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
 756             p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
 757             p_media->es[i]->fmt.i_id == p_fmt->i_id )
 758         {
 759             p_es = p_media->es[i];
 760         }
 761     }
 762     if( !p_es ) return;
 763
 764     msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );
 765
 766     vlc_mutex_lock( &p_media->lock );
 767     TAB_REMOVE( p_media->i_es, p_media->es, p_es );
 768     vlc_mutex_unlock( &p_media->lock );
 769
 770     free( p_es->psz_fmtp );
 771
 772     if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
 773     es_format_Clean( &p_es->fmt );
 774     free( p_es );
 775 }
 776
 777 static void CommandPush( vod_t *p_vod, rtsp_cmd_type_t i_type, vod_media_t *p_media, const char *psz_session,
 778                          double f_arg, const char *psz_arg )
 779 {
 780     rtsp_cmd_t cmd;
 781     block_t *p_cmd;
 782
 783     memset( &cmd, 0, sizeof(cmd) );
 784     cmd.i_type = i_type;
 785     cmd.p_media = p_media;
 786     if( p_media )
 787         cmd.i_media_id = p_media->id;
 788     if( psz_session )
 789         cmd.psz_session = strdup(psz_session);
 790     cmd.f_arg = f_arg;
 791     if( psz_arg )
 792         cmd.psz_arg = strdup(psz_arg);
 793
 794     p_cmd = block_New( p_vod, sizeof(rtsp_cmd_t) );
 795     memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
 796
 797     block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
 798 }
 799
 800 static void* CommandThread( vlc_object_t *p_this )
 801 {
 802     vod_t *p_vod = (vod_t*)p_this;
 803     vod_sys_t *p_sys = p_vod->p_sys;
 804     int canc = vlc_savecancel ();
 805
 806     while( vlc_object_alive (p_vod) )
 807     {
 808         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 809         rtsp_cmd_t cmd;
 810         vod_media_t *p_media = NULL;
 811         int i;
 812
 813         if( !p_block_cmd )
 814             break;
 815
 816         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 817         block_Release( p_block_cmd );
 818
 819         if( cmd.i_type == RTSP_CMD_TYPE_NONE )
 820             break;
 821
 822         if ( cmd.i_type == RTSP_CMD_TYPE_ADD )
 823         {
 824             TAB_APPEND( p_sys->i_media, p_sys->media, cmd.p_media );
 825             goto next;
 826         }
 827
 828         if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 829         {
 830             MediaDel(p_vod, cmd.p_media);
 831             goto next;
 832         }
 833
 834         /* */
 835         for( i = 0; i < p_sys->i_media; i++ )
 836         {
 837             if( p_sys->media[i]->id == cmd.i_media_id )
 838                 break;
 839         }
 840         if( i >= p_sys->i_media )
 841         {
 842             goto next;
 843         }
 844         p_media = p_sys->media[i];
 845
 846         switch( cmd.i_type )
 847         {
 848         case RTSP_CMD_TYPE_PLAY:
 849             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 850                               VOD_MEDIA_PLAY, cmd.psz_arg );
 851             break;
 852         case RTSP_CMD_TYPE_PAUSE:
 853             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 854                               VOD_MEDIA_PAUSE );
 855             break;
 856
 857         case RTSP_CMD_TYPE_STOP:
 858             vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
 859             break;
 860
 861         case RTSP_CMD_TYPE_SEEK:
 862             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 863                               VOD_MEDIA_SEEK, cmd.f_arg );
 864             break;
 865
 866         case RTSP_CMD_TYPE_REWIND:
 867             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 868                               VOD_MEDIA_REWIND, cmd.f_arg );
 869             break;
 870
 871         case RTSP_CMD_TYPE_FORWARD:
 872             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 873                               VOD_MEDIA_FORWARD, cmd.f_arg );
 874             break;
 875
 876         default:
 877             break;
 878         }
 879
 880     next:
 881         free( cmd.psz_session );
 882         free( cmd.psz_arg );
 883     }
 884
 885     vlc_restorecancel (canc);
 886     return NULL;
 887 }
 888
 889 /****************************************************************************
 890  * RTSP server implementation
 891  ****************************************************************************/
 892 static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
 893 {
 894     rtsp_client_t *p_rtsp = calloc( 1, sizeof(rtsp_client_t) );
 895
 896     if( !p_rtsp )
 897         return NULL;
 898     p_rtsp->es = 0;
 899
 900     p_rtsp->psz_session = psz_session;
 901     TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 902
 903     p_media->p_vod->p_sys->i_connections++;
 904     msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
 905              psz_session, p_media->p_vod->p_sys->i_throttle_users );
 906
 907     return p_rtsp;
 908 }
 909
 910 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
 911 {
 912     for( int i = 0; psz_session && i < p_media->i_rtsp; i++ )
 913     {
 914         if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
 915             return p_media->rtsp[i];
 916     }
 917
 918     return NULL;
 919 }
 920
 921 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
 922 {
 923     p_media->p_vod->p_sys->i_connections--;
 924     msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
 925              p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
 926
 927     while( p_rtsp->i_es )
 928     {
 929         p_rtsp->i_es--;
 930         free( p_rtsp->es[p_rtsp->i_es] );
 931     }
 932     free( p_rtsp->es );
 933
 934     TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 935
 936     free( p_rtsp->psz_session );
 937     free( p_rtsp );
 938 }
 939
 940
 941 static float ParseNPT (const char *str)
 942 {
 943     locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
 944     locale_t oldloc = uselocale (loc);
 945     unsigned hour, min;
 946     float sec;
 947
 948     if (sscanf (str, "%u:%u:%f", &hour, &min, &sec) == 3)
 949         sec += ((hour * 60) + min) * 60;
 950     else
 951     if (sscanf (str, "%f", &sec) != 1)
 952         sec = 0.;
 953
 954     if (loc != (locale_t)0)
 955     {
 956         uselocale (oldloc);
 957         freelocale (loc);
 958     }
 959     return sec;
 960 }
 961
 962
 963 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
 964                          httpd_message_t *answer, const httpd_message_t *query )
 965 {
 966     vod_media_t *p_media = (vod_media_t*)p_args;
 967     vod_t *p_vod = p_media->p_vod;
 968     const char *psz_transport = NULL;
 969     const char *psz_playnow = NULL; /* support option: x-playNow */
 970     const char *psz_session = NULL;
 971     const char *psz_cseq = NULL;
 972     rtsp_client_t *p_rtsp;
 973     int i_port = 0;
 974     int i_cseq = 0;
 975
 976     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
 977
 978     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
 979
 980     answer->i_proto   = HTTPD_PROTO_RTSP;
 981     answer->i_version = query->i_version;
 982     answer->i_type    = HTTPD_MSG_ANSWER;
 983     answer->i_body    = 0;
 984     answer->p_body    = NULL;
 985
 986     switch( query->i_type )
 987     {
 988         case HTTPD_MSG_SETUP:
 989         {
 990             psz_playnow = httpd_MsgGet( query, "x-playNow" );
 991             psz_transport = httpd_MsgGet( query, "Transport" );
 992             if( psz_transport == NULL )
 993             {
 994                 answer->i_status = 400;
 995                 break;
 996             }
 997             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
 998
 999             if( strstr( psz_transport, "unicast" ) &&
1000                 strstr( psz_transport, "client_port=" ) )
1001             {
1002                 rtsp_client_t *p_rtsp = NULL;
1003                 char ip[NI_MAXNUMERICHOST];
1004                 i_port = atoi( strstr( psz_transport, "client_port=" ) +
1005                                 strlen("client_port=") );
1006
1007                 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
1008                     strstr( psz_transport, "RAW/RAW/UDP" ) )
1009                 {
1010                     p_media->psz_mux = p_vod->p_sys->psz_raw_mux;
1011                     p_media->b_raw = true;
1012                 }
1013
1014                 if( httpd_ClientIP( cl, ip ) == NULL )
1015                 {
1016                     answer->i_status = 500;
1017                     answer->i_body = 0;
1018                     answer->p_body = NULL;
1019                     break;
1020                 }
1021
1022                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1023                          ip, i_port );
1024
1025                 psz_session = httpd_MsgGet( query, "Session" );
1026                 if( !psz_session || !*psz_session )
1027                 {
1028                     char *psz_new;
1029                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1030                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1031                     {
1032                         answer->i_status = 503;
1033                         answer->i_body = 0;
1034                         answer->p_body = NULL;
1035                         break;
1036                     }
1037 #warning Should use secure randomness here! (spoofing risk)
1038                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1039                         return VLC_ENOMEM;
1040                     psz_session = psz_new;
1041
1042                     p_rtsp = RtspClientNew( p_media, psz_new );
1043                     if( !p_rtsp )
1044                     {
1045                         answer->i_status = 454;
1046                         answer->i_body = 0;
1047                         answer->p_body = NULL;
1048                         break;
1049                     }
1050                 }
1051                 else
1052                 {
1053                     p_rtsp = RtspClientGet( p_media, psz_session );
1054                     if( !p_rtsp )
1055                     {
1056                         answer->i_status = 454;
1057                         answer->i_body = 0;
1058                         answer->p_body = NULL;
1059                         break;
1060                     }
1061                 }
1062
1063                 answer->i_status = 200;
1064                 answer->i_body = 0;
1065                 answer->p_body = NULL;
1066
1067                 if( p_media->b_raw )
1068                 {
1069                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1070                     {
1071                         httpd_MsgAdd( answer, "Transport",
1072                                       "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1073                                       i_port, i_port + 1 );
1074                     }
1075                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1076                     {
1077                         httpd_MsgAdd( answer, "Transport",
1078                                       "RAW/RAW/UDP;unicast;client_port=%d-%d",
1079                                       i_port, i_port + 1 );
1080                     }
1081                 }
1082                 else
1083                     httpd_MsgAdd( answer, "Transport",
1084                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1085                                   i_port, i_port + 1 );
1086             }
1087             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1088             {
1089                 answer->i_status = 461;
1090                 answer->i_body = 0;
1091                 answer->p_body = NULL;
1092             }
1093
1094             /* Intentional fall-through on x-playNow option in RTSP request */
1095             if( !psz_playnow )
1096                 break;
1097         }
1098
1099         case HTTPD_MSG_PLAY:
1100         {
1101             char *psz_output, ip[NI_MAXNUMERICHOST];
1102             int i_port_audio = 0, i_port_video = 0;
1103
1104             /* for now only multicast so easy */
1105             if( !psz_playnow )
1106             {
1107                 answer->i_status = 200;
1108                 answer->i_body = 0;
1109                 answer->p_body = NULL;
1110             }
1111
1112             if( !psz_session )
1113                 psz_session = httpd_MsgGet( query, "Session" );
1114             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1115
1116             p_rtsp = RtspClientGet( p_media, psz_session );
1117             if( !p_rtsp )
1118             {
1119                 answer->i_status = 500;
1120                 answer->i_body = 0;
1121                 answer->p_body = NULL;
1122                 break;
1123             }
1124
1125             if( p_rtsp->b_playing )
1126             {
1127                 const char *psz_position = httpd_MsgGet( query, "Range" );
1128                 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1129                 if( psz_position )
1130                     psz_position = strstr( psz_position, "npt=" );
1131                 if( psz_position && !psz_scale )
1132                 {
1133                     double f_pos = ParseNPT (psz_position + 4);
1134                     msg_Dbg( p_vod, "seeking request: %s", psz_position );
1135                     f_pos /= ((double)(p_media->i_length)) / CLOCK_FREQ / 100;
1136                     CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1137                                  psz_session, f_pos, NULL );
1138                 }
1139                 else if( psz_scale )
1140                 {
1141                     double f_scale = 0.0;
1142                     char *end;
1143
1144                     f_scale = us_strtod( psz_scale, &end );
1145                     if( end > psz_scale )
1146                     {
1147                         f_scale = (f_scale * 30.0);
1148                         if( psz_scale[0] == '-' ) /* rewind */
1149                         {
1150                             msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1151                             CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
1152                                          psz_session, f_scale, NULL );
1153                         }
1154                         else if(psz_scale[0] != '1' ) /* fast-forward */
1155                         {
1156                             msg_Dbg( p_vod, "fastforward request: %s",
1157                                      psz_scale );
1158                             CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
1159                                          psz_session, f_scale, NULL );
1160                         }
1161
1162                         if( p_rtsp->b_paused )
1163                         {
1164                             p_rtsp->b_paused = false;
1165                             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1166                                          psz_session, 0, NULL );
1167                         }
1168                     }
1169                     break;
1170                 }
1171             }
1172
1173             if( p_rtsp->b_playing && p_rtsp->b_paused )
1174             {
1175                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1176                              psz_session, 0, NULL );
1177                 p_rtsp->b_paused = false;
1178                 break;
1179             }
1180             else if( p_rtsp->b_playing ) break;
1181
1182             if( httpd_ClientIP( cl, ip ) == NULL ) break;
1183
1184             p_rtsp->b_playing = true;
1185
1186             /* FIXME for != 1 video and 1 audio */
1187             for( int i = 0; i < p_rtsp->i_es; i++ )
1188             {
1189                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1190                     i_port_audio = p_rtsp->es[i]->i_port;
1191                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1192                     i_port_video = p_rtsp->es[i]->i_port;
1193             }
1194
1195             if( p_media->psz_mux )
1196             {
1197                 if( p_media->b_raw )
1198                 {
1199                     if( asprintf( &psz_output,
1200                               "std{access=udp,dst=%s:%i,mux=%s}",
1201                               ip, i_port, p_media->psz_mux ) < 0 )
1202                         return VLC_ENOMEM;
1203                 }
1204                 else
1205                 {
1206                     if( asprintf( &psz_output,
1207                               "rtp{dst=%s,port=%i,mux=%s}",
1208                               ip, i_port_video, p_media->psz_mux ) < 0 )
1209                         return VLC_ENOMEM;
1210                 }
1211             }
1212             else
1213             {
1214                 if( asprintf( &psz_output,
1215                               "rtp{dst=%s,port-video=%i,port-audio=%i}",
1216                               ip, i_port_video, i_port_audio ) < 0 )
1217                     return VLC_ENOMEM;
1218             }
1219
1220             CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1221                          0, psz_output );
1222             free( psz_output );
1223             break;
1224         }
1225
1226         case HTTPD_MSG_DESCRIBE:
1227         {
1228             char *psz_sdp =
1229                 SDPGenerate( p_media, cl );
1230
1231             if( psz_sdp != NULL )
1232             {
1233                 answer->i_status = 200;
1234                 httpd_MsgAdd( answer, "Content-type",  "%s",
1235                               "application/sdp" );
1236
1237                 answer->p_body = (uint8_t *)psz_sdp;
1238                 answer->i_body = strlen( psz_sdp );
1239             }
1240             else
1241             {
1242                 answer->i_status = 500;
1243                 answer->p_body = NULL;
1244                 answer->i_body = 0;
1245             }
1246             break;
1247         }
1248
1249         case HTTPD_MSG_PAUSE:
1250             psz_session = httpd_MsgGet( query, "Session" );
1251             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1252
1253             p_rtsp = RtspClientGet( p_media, psz_session );
1254             if( !p_rtsp ) break;
1255
1256             if( !p_rtsp->b_paused )
1257             {
1258                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1259                              0, NULL );
1260                 p_rtsp->b_paused = true;
1261             }
1262
1263             answer->i_status = 200;
1264             answer->i_body = 0;
1265             answer->p_body = NULL;
1266             break;
1267
1268         case HTTPD_MSG_TEARDOWN:
1269             /* for now only multicast so easy again */
1270             answer->i_status = 200;
1271             answer->i_body = 0;
1272             answer->p_body = NULL;
1273
1274             psz_session = httpd_MsgGet( query, "Session" );
1275             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1276
1277             p_rtsp = RtspClientGet( p_media, psz_session );
1278             if( !p_rtsp ) break;
1279
1280             CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1281                          0, NULL );
1282             RtspClientDel( p_media, p_rtsp );
1283             break;
1284
1285         case HTTPD_MSG_GETPARAMETER:
1286             answer->i_status = 200;
1287             answer->i_body = 0;
1288             answer->p_body = NULL;
1289             break;
1290
1291         default:
1292             return VLC_EGENERIC;
1293     }
1294
1295     httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1296     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1297     psz_cseq = httpd_MsgGet( query, "Cseq" );
1298     psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1299     httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1300     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1301
1302     if( psz_session )
1303     {
1304          if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
1305              httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1306                p_media->p_vod->p_sys->i_session_timeout );
1307          else
1308               httpd_MsgAdd( answer, "Session", "%s", psz_session );
1309     }
1310
1311     return VLC_SUCCESS;
1312 }
1313
1314 static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1315                            httpd_message_t *answer,
1316                            const httpd_message_t *query )
1317 {
1318     media_es_t *p_es = (media_es_t*)p_args;
1319     vod_media_t *p_media = p_es->p_media;
1320     vod_t *p_vod = p_media->p_vod;
1321     rtsp_client_t *p_rtsp = NULL;
1322     const char *psz_transport = NULL;
1323     const char *psz_playnow = NULL; /* support option: x-playNow */
1324     const char *psz_session = NULL;
1325     const char *psz_position = NULL;
1326     const char *psz_cseq = NULL;
1327     int i_cseq = 0;
1328
1329     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1330
1331     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1332
1333     answer->i_proto   = HTTPD_PROTO_RTSP;
1334     answer->i_version = query->i_version;
1335     answer->i_type    = HTTPD_MSG_ANSWER;
1336     answer->i_body    = 0;
1337     answer->p_body      = NULL;
1338
1339     switch( query->i_type )
1340     {
1341         case HTTPD_MSG_SETUP:
1342             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1343             psz_transport = httpd_MsgGet( query, "Transport" );
1344
1345             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1346
1347             if( strstr( psz_transport, "unicast" ) &&
1348                 strstr( psz_transport, "client_port=" ) )
1349             {
1350                 rtsp_client_t *p_rtsp = NULL;
1351                 rtsp_client_es_t *p_rtsp_es = NULL;
1352                 char ip[NI_MAXNUMERICHOST];
1353                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
1354                                    strlen("client_port=") );
1355
1356                 if( httpd_ClientIP( cl, ip ) == NULL )
1357                 {
1358                     answer->i_status = 500;
1359                     answer->i_body = 0;
1360                     answer->p_body = NULL;
1361                     break;
1362                 }
1363
1364                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1365                         ip, i_port );
1366
1367                 psz_session = httpd_MsgGet( query, "Session" );
1368                 if( !psz_session || !*psz_session )
1369                 {
1370                     char *psz_new;
1371                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1372                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1373                     {
1374                         answer->i_status = 503;
1375                         answer->i_body = 0;
1376                         answer->p_body = NULL;
1377                         break;
1378                     }
1379 #warning Session ID should be securely random (spoofing risk)
1380                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1381                         return VLC_ENOMEM;
1382                     psz_session = psz_new;
1383
1384                     p_rtsp = RtspClientNew( p_media, psz_new );
1385                     if( !p_rtsp )
1386                     {
1387                         answer->i_status = 454;
1388                         answer->i_body = 0;
1389                         answer->p_body = NULL;
1390                         break;
1391                     }
1392                 }
1393                 else
1394                 {
1395                     p_rtsp = RtspClientGet( p_media, psz_session );
1396                     if( !p_rtsp )
1397                     {
1398                         answer->i_status = 454;
1399                         answer->i_body = 0;
1400                         answer->p_body = NULL;
1401                         break;
1402                     }
1403                 }
1404
1405                 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1406                 if( !p_rtsp_es )
1407                 {
1408                     answer->i_status = 500;
1409                     answer->i_body = 0;
1410                     answer->p_body = NULL;
1411                     break;
1412                 }
1413                 p_rtsp_es->i_port = i_port;
1414                 p_rtsp_es->p_media_es = p_es;
1415                 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1416
1417                 answer->i_status = 200;
1418                 answer->i_body = 0;
1419                 answer->p_body = NULL;
1420
1421                 if( p_media->b_raw )
1422                 {
1423                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1424                     {
1425                         httpd_MsgAdd( answer, "Transport",
1426                                      "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1427                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1428                     }
1429                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1430                     {
1431                         httpd_MsgAdd( answer, "Transport",
1432                                      "RAW/RAW/UDP;unicast;client_port=%d-%d",
1433                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1434                     }
1435                 }
1436                 else
1437                 {
1438                     httpd_MsgAdd( answer, "Transport",
1439                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1440                                   p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1441                 }
1442             }
1443             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1444             {
1445                 answer->i_status = 461;
1446                 answer->i_body = 0;
1447                 answer->p_body = NULL;
1448             }
1449
1450             /* Intentional fall-through on x-playNow option in RTSP request */
1451             if( !psz_playnow )
1452                 break;
1453
1454         case HTTPD_MSG_PLAY:
1455             /* This is kind of a kludge. Should we only support Aggregate
1456              * Operations ? */
1457             psz_session = httpd_MsgGet( query, "Session" );
1458             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1459
1460             p_rtsp = RtspClientGet( p_media, psz_session );
1461
1462             psz_position = httpd_MsgGet( query, "Range" );
1463             if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1464             if( psz_position )
1465             {
1466                 double f_pos = ParseNPT (psz_position + 4);
1467                 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1468                 f_pos /= ((double)(p_media->i_length)) / CLOCK_FREQ / 100;
1469                 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1470                              psz_session, f_pos, NULL );
1471             }
1472
1473             if( !psz_playnow )
1474             {
1475                 answer->i_status = 200;
1476                 answer->i_body = 0;
1477                 answer->p_body = NULL;
1478             }
1479             break;
1480
1481         case HTTPD_MSG_TEARDOWN:
1482             answer->i_status = 200;
1483             answer->i_body = 0;
1484             answer->p_body = NULL;
1485
1486             psz_session = httpd_MsgGet( query, "Session" );
1487             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1488
1489             p_rtsp = RtspClientGet( p_media, psz_session );
1490             if( !p_rtsp ) break;
1491
1492             for( int i = 0; i < p_rtsp->i_es; i++ )
1493             {
1494                 if( p_rtsp->es[i]->p_media_es == p_es )
1495                 {
1496                     TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, p_rtsp->es[i] );
1497                     break;
1498                 }
1499             }
1500
1501             if( !p_rtsp->i_es )
1502             {
1503                 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1504                              0, NULL );
1505                 RtspClientDel( p_media, p_rtsp );
1506             }
1507             break;
1508
1509         case HTTPD_MSG_PAUSE:
1510             /* This is kind of a kludge. Should we only support Aggregate
1511              * Operations ? */
1512             psz_session = httpd_MsgGet( query, "Session" );
1513             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1514
1515             p_rtsp = RtspClientGet( p_media, psz_session );
1516             if( !p_rtsp ) break;
1517
1518             if( !p_rtsp->b_paused )
1519             {
1520                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1521                              0, NULL );
1522                 p_rtsp->b_paused = true;
1523             }
1524
1525             answer->i_status = 200;
1526             answer->i_body = 0;
1527             answer->p_body = NULL;
1528             break;
1529
1530         default:
1531             return VLC_EGENERIC;
1532             break;
1533     }
1534
1535     httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1536     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1537     psz_cseq = httpd_MsgGet( query, "Cseq" );
1538     if (psz_cseq)
1539         i_cseq = atoi( psz_cseq );
1540     else
1541         i_cseq = 0;
1542     httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1543     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1544
1545     if( psz_session )
1546         httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1547
1548     return VLC_SUCCESS;
1549 }
1550
1551 /*****************************************************************************
1552  * SDPGenerate: TODO
1553  * FIXME: need to be moved to a common place ?
1554  *****************************************************************************/
1555 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1556 {
1557     char *psz_sdp, ip[NI_MAXNUMERICHOST];
1558     const char *psz_control;
1559
1560     if( httpd_ServerIP( cl, ip ) == NULL )
1561         return NULL;
1562
1563     bool ipv6 = ( strchr( ip, ':' ) != NULL );
1564
1565     psz_control = ipv6 ? p_media->psz_rtsp_control_v6
1566                        : p_media->psz_rtsp_control_v4;
1567
1568     /* Dummy destination address for RTSP */
1569     struct sockaddr_storage dst;
1570     socklen_t dstlen = ipv6 ? sizeof( struct sockaddr_in6 )
1571                             : sizeof( struct sockaddr_in );
1572     memset (&dst, 0, dstlen);
1573     dst.ss_family = ipv6 ? AF_INET6 : AF_INET;
1574 #ifdef HAVE_SA_LEN
1575     dst.ss_len = dstlen;
1576 #endif
1577
1578     psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_media->p_vod ), "sout-rtp-",
1579                              NULL, 0, (struct sockaddr *)&dst, dstlen );
1580     if( psz_sdp == NULL )
1581         return NULL;
1582
1583     if( p_media->i_length > 0 )
1584     {
1585         lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
1586         sdp_AddAttribute( &psz_sdp, "range"," npt=0-%lld.%03u", d.quot,
1587                           (unsigned)d.rem );
1588     }
1589
1590     for( int i = 0; i < p_media->i_es; i++ )
1591     {
1592         media_es_t *p_es = p_media->es[i];
1593         const char *mime_major; /* major MIME type */
1594
1595         switch( p_es->fmt.i_cat )
1596         {
1597             case VIDEO_ES:
1598                 mime_major = "video";
1599                 break;
1600             case AUDIO_ES:
1601                 mime_major = "audio";
1602                 break;
1603             case SPU_ES:
1604                 mime_major = "text";
1605                 break;
1606             default:
1607                 continue;
1608         }
1609
1610         sdp_AddMedia( &psz_sdp, mime_major, "RTP/AVP", 0 /* p_es->i_port */,
1611                       p_es->i_payload_type, false, 0,
1612                       p_es->psz_ptname, p_es->i_clock_rate, p_es->i_channels,
1613                       p_es->psz_fmtp );
1614
1615         sdp_AddAttribute( &psz_sdp, "control", psz_control, ip, i );
1616     }
1617
1618     return psz_sdp;
1619 }