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     int i;
 247
 248     for( 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         httpd_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     p_vod->pf_media_add_es = MediaAddES;
 304     p_vod->pf_media_del_es = MediaDelES;
 305
 306     p_sys->p_fifo_cmd = block_FifoNew();
 307     if( vlc_thread_create( p_vod, "rtsp vod thread", CommandThread,
 308                            VLC_THREAD_PRIORITY_LOW ) )
 309     {
 310         msg_Err( p_vod, "cannot spawn rtsp vod thread" );
 311         block_FifoRelease( p_sys->p_fifo_cmd );
 312         free( p_sys->psz_path );
 313         goto error;
 314     }
 315
 316     return VLC_SUCCESS;
 317
 318 error:
 319     if( p_sys )
 320     {
 321         if( p_sys->p_rtsp_host ) httpd_HostDelete( p_sys->p_rtsp_host );
 322         free( p_sys->psz_raw_mux );
 323         free( p_sys );
 324     }
 325     vlc_UrlClean( &url );
 326
 327     return VLC_EGENERIC;
 328 }
 329
 330 /*****************************************************************************
 331  * Close:
 332  *****************************************************************************/
 333 static void Close( vlc_object_t * p_this )
 334 {
 335     vod_t *p_vod = (vod_t *)p_this;
 336     vod_sys_t *p_sys = p_vod->p_sys;
 337
 338     /* Stop command thread */
 339     vlc_object_kill( p_vod );
 340     CommandPush( p_vod, RTSP_CMD_TYPE_NONE, NULL, NULL, 0.0, NULL );
 341     vlc_thread_join( p_vod );
 342
 343     while( block_FifoCount( p_sys->p_fifo_cmd ) > 0 )
 344     {
 345         rtsp_cmd_t cmd;
 346         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 347         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 348         block_Release( p_block_cmd );
 349         if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 350             MediaDel(p_vod, cmd.p_media);
 351         free( cmd.psz_session );
 352         free( cmd.psz_arg );
 353     }
 354     block_FifoRelease( p_sys->p_fifo_cmd );
 355
 356     httpd_HostDelete( p_sys->p_rtsp_host );
 357     var_Destroy( p_this, "rtsp-session-timeout" );
 358     var_Destroy( p_this, "rtsp-throttle-users" );
 359     var_Destroy( p_this, "rtsp-raw-mux" );
 360
 361     /* Check VLM is not buggy */
 362     if( p_sys->i_media > 0 )
 363         msg_Err( p_vod, "rtsp vod leaking %d medias", p_sys->i_media );
 364     TAB_CLEAN( p_sys->i_media, p_sys->media );
 365
 366     free( p_sys->psz_path );
 367     free( p_sys->psz_raw_mux );
 368     free( p_sys );
 369 }
 370
 371 /*****************************************************************************
 372  * Media handling
 373  *****************************************************************************/
 374 static vod_media_t *MediaNew( vod_t *p_vod, const char *psz_name,
 375                               input_item_t *p_item )
 376 {
 377     int i;
 378     vod_sys_t *p_sys = p_vod->p_sys;
 379
 380     vod_media_t *p_media = calloc( 1, sizeof(vod_media_t) );
 381     if( !p_media )
 382         return NULL;
 383
 384     p_media->id = p_sys->i_media_id++;
 385     TAB_INIT( p_media->i_es, p_media->es );
 386     p_media->psz_mux = NULL;
 387     TAB_INIT( p_media->i_rtsp, p_media->rtsp );
 388     p_media->b_raw = false;
 389
 390     if( asprintf( &p_media->psz_rtsp_path, "%s%s",
 391                   p_sys->psz_path, psz_name ) <0 )
 392         return NULL;
 393     p_media->p_rtsp_url =
 394         httpd_UrlNewUnique( p_sys->p_rtsp_host, p_media->psz_rtsp_path, NULL,
 395                             NULL, NULL );
 396
 397     if( !p_media->p_rtsp_url )
 398     {
 399         msg_Err( p_vod, "cannot create RTSP url (%s)", p_media->psz_rtsp_path);
 400         free( p_media->psz_rtsp_path );
 401         free( p_media );
 402         return NULL;
 403     }
 404
 405     msg_Dbg( p_vod, "created RTSP url: %s", p_media->psz_rtsp_path );
 406
 407     if( asprintf( &p_media->psz_rtsp_control_v4,
 408                "rtsp://%%s:%d%s/trackID=%%d",
 409                p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 410     {
 411         httpd_UrlDelete( p_media->p_rtsp_url );
 412         free( p_media->psz_rtsp_path );
 413         free( p_media );
 414         return NULL;
 415     }
 416     if( asprintf( &p_media->psz_rtsp_control_v6,
 417                "rtsp://[%%s]:%d%s/trackID=%%d",
 418               p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 419     {
 420         httpd_UrlDelete( p_media->p_rtsp_url );
 421         free( p_media->psz_rtsp_path );
 422         free( p_media );
 423         return NULL;
 424     }
 425
 426     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_SETUP,
 427                     RtspCallback, (void*)p_media );
 428     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_DESCRIBE,
 429                     RtspCallback, (void*)p_media );
 430     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PLAY,
 431                     RtspCallback, (void*)p_media );
 432     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PAUSE,
 433                     RtspCallback, (void*)p_media );
 434     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_GETPARAMETER,
 435                     RtspCallback, (void*)p_media );
 436     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 437                     RtspCallback, (void*)p_media );
 438
 439     p_media->p_vod = p_vod;
 440
 441     vlc_mutex_init( &p_media->lock );
 442
 443     p_media->i_payload_type = 96;
 444
 445     p_media->i_length = input_item_GetDuration( p_item );
 446
 447     vlc_mutex_lock( &p_item->lock );
 448     msg_Dbg( p_vod, "media has %i declared ES", p_item->i_es );
 449     for( i = 0; i < p_item->i_es; i++ )
 450     {
 451         MediaAddES( p_vod, p_media, p_item->es[i] );
 452     }
 453     vlc_mutex_unlock( &p_item->lock );
 454
 455     CommandPush( p_vod, RTSP_CMD_TYPE_ADD, p_media, NULL, 0.0, NULL );
 456     return p_media;
 457 }
 458
 459 static void MediaAskDel ( vod_t *p_vod, vod_media_t *p_media )
 460 {
 461     CommandPush( p_vod, RTSP_CMD_TYPE_DEL, p_media, NULL, 0.0, NULL );
 462 }
 463
 464 static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
 465 {
 466     vod_sys_t *p_sys = p_vod->p_sys;
 467
 468     msg_Dbg( p_vod, "deleting media: %s", p_media->psz_rtsp_path );
 469
 470     TAB_REMOVE( p_sys->i_media, p_sys->media, p_media );
 471
 472     httpd_UrlDelete( p_media->p_rtsp_url );
 473
 474     while( p_media->i_rtsp > 0 )
 475         RtspClientDel( p_media, p_media->rtsp[0] );
 476     TAB_CLEAN( p_media->i_rtsp, p_media->rtsp );
 477
 478     free( p_media->psz_rtsp_path );
 479     free( p_media->psz_rtsp_control_v6 );
 480     free( p_media->psz_rtsp_control_v4 );
 481
 482     while( p_media->i_es )
 483         MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );
 484     TAB_CLEAN( p_media->i_es, p_media->es );
 485
 486     vlc_mutex_destroy( &p_media->lock );
 487
 488     free( p_media );
 489 }
 490
 491 static int MediaAddES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt )
 492 {
 493     char *psz_urlc;
 494
 495     if( p_media->i_payload_type >= 128 )
 496     {
 497         msg_Err( p_vod, "too many elementary streams");
 498         return VLC_EGENERIC;
 499     }
 500
 501     media_es_t *p_es = calloc( 1, sizeof(media_es_t) );
 502     if( !p_es )
 503         return VLC_ENOMEM;
 504
 505     p_media->psz_mux = NULL;
 506
 507     /* TODO: update SDP, etc... */
 508     if( asprintf( &psz_urlc, "%s/trackID=%d",
 509               p_media->psz_rtsp_path, p_media->i_es ) < 0 )
 510     {
 511         free( p_es );
 512         return VLC_ENOMEM;
 513     }
 514     msg_Dbg( p_vod, "  - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
 515
 516     p_es->i_clock_rate = 90000;
 517     p_es->i_channels = 1;
 518
 519     switch( p_fmt->i_codec )
 520     {
 521         case VLC_CODEC_S16B:
 522             if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
 523             {
 524                 p_es->i_payload_type = 11;
 525             }
 526             else if( p_fmt->audio.i_channels == 2 &&
 527                      p_fmt->audio.i_rate == 44100 )
 528             {
 529                 p_es->i_payload_type = 10;
 530             }
 531             else
 532             {
 533                 p_es->i_payload_type = p_media->i_payload_type++;
 534             }
 535             p_es->psz_ptname = "L16";
 536             p_es->i_clock_rate = p_fmt->audio.i_rate;
 537             p_es->i_channels = p_fmt->audio.i_channels;
 538             break;
 539         case VLC_CODEC_U8:
 540             p_es->i_payload_type = p_media->i_payload_type++;
 541             p_es->psz_ptname = "L8";
 542             p_es->i_clock_rate = p_fmt->audio.i_rate;
 543             p_es->i_channels = p_fmt->audio.i_channels;
 544             break;
 545         case VLC_CODEC_MPGA:
 546             p_es->i_payload_type = 14;
 547             p_es->psz_ptname = "MPA";
 548             break;
 549         case VLC_CODEC_MPGV:
 550             p_es->i_payload_type = 32;
 551             p_es->psz_ptname = "MPV";
 552             break;
 553         case VLC_CODEC_A52:
 554             p_es->i_payload_type = p_media->i_payload_type++;
 555             p_es->psz_ptname = "ac3";
 556             p_es->i_clock_rate = p_fmt->audio.i_rate;
 557             break;
 558         case VLC_CODEC_H263:
 559             p_es->i_payload_type = p_media->i_payload_type++;
 560             p_es->psz_ptname = "H263-1998";
 561             break;
 562         case VLC_CODEC_H264:
 563             p_es->i_payload_type = p_media->i_payload_type++;
 564             p_es->psz_ptname = "H264";
 565             p_es->psz_fmtp = NULL;
 566             /* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
 567             if( p_fmt->i_extra > 0 )
 568             {
 569                 uint8_t *p_buffer = p_fmt->p_extra;
 570                 int     i_buffer = p_fmt->i_extra;
 571                 char    *p_64_sps = NULL;
 572                 char    *p_64_pps = NULL;
 573                 char    hexa[6+1];
 574
 575                 while( i_buffer > 4 &&
 576                        p_buffer[0] == 0 && p_buffer[1] == 0 &&
 577                        p_buffer[2] == 0 && p_buffer[3] == 1 )
 578                 {
 579                     const int i_nal_type = p_buffer[4]&0x1f;
 580                     int i_offset;
 581                     int i_size      = 0;
 582
 583                     i_size = i_buffer;
 584                     for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
 585                     {
 586                         if( p_buffer[i_offset] == 0 && p_buffer[i_offset+1] == 0 && p_buffer[i_offset+2] == 0 && p_buffer[i_offset+3] == 1 )
 587                         {
 588                             /* we found another startcode */
 589                             i_size = i_offset;
 590                             break;
 591                         }
 592                     }
 593                     if( i_nal_type == 7 )
 594                     {
 595                         free( p_64_sps );
 596                         p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 597                         sprintf_hexa( hexa, &p_buffer[5], 3 );
 598                     }
 599                     else if( i_nal_type == 8 )
 600                     {
 601                         free( p_64_pps );
 602                         p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 603                     }
 604                     i_buffer -= i_size;
 605                     p_buffer += i_size;
 606                 }
 607                 /* */
 608                 if( p_64_sps && p_64_pps )
 609                 {
 610                     if( asprintf( &p_es->psz_fmtp,
 611                                   "packetization-mode=1;profile-level-id=%s;"
 612                                   "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
 613                                   p_64_pps ) < 0 )
 614                     {
 615                         free( p_64_sps );
 616                         free( p_64_pps );
 617                         free( psz_urlc );
 618                         free( p_es );
 619                         return VLC_ENOMEM;
 620                     }
 621                 }
 622                 free( p_64_sps );
 623                 free( p_64_pps );
 624             }
 625             if( !p_es->psz_fmtp )
 626                 p_es->psz_fmtp = strdup( "packetization-mode=1" );
 627             break;
 628         case VLC_CODEC_MP4V:
 629             p_es->i_payload_type = p_media->i_payload_type++;
 630             p_es->psz_ptname = "MP4V-ES";
 631             if( p_fmt->i_extra > 0 )
 632             {
 633                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 634                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 635                 if( asprintf( &p_es->psz_fmtp,
 636                               "profile-level-id=3; config=%s;", p_hexa ) == -1 )
 637                     p_es->psz_fmtp = NULL;
 638                 free( p_hexa );
 639             }
 640             break;
 641         case VLC_CODEC_MP4A:
 642             p_es->i_payload_type = p_media->i_payload_type++;
 643             p_es->psz_ptname = "mpeg4-generic";
 644             p_es->i_clock_rate = p_fmt->audio.i_rate;
 645             if( p_fmt->i_extra > 0 )
 646             {
 647                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 648                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 649                 if( asprintf( &p_es->psz_fmtp,
 650                               "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
 651                               "config=%s; SizeLength=13;IndexLength=3; "
 652                               "IndexDeltaLength=3; Profile=1;", p_hexa ) == -1 )
 653                     p_es->psz_fmtp = NULL;
 654                 free( p_hexa );
 655             }
 656             break;
 657         case VLC_FOURCC( 'm', 'p', '2', 't' ):
 658             p_media->psz_mux = "ts";
 659             p_es->i_payload_type = 33;
 660             p_es->psz_ptname = "MP2T";
 661             break;
 662         case VLC_FOURCC( 'm', 'p', '2', 'p' ):
 663             p_media->psz_mux = "ps";
 664             p_es->i_payload_type = p_media->i_payload_type++;
 665             p_es->psz_ptname = "MP2P";
 666             break;
 667         case VLC_CODEC_AMR_NB:
 668             p_es->i_payload_type = p_media->i_payload_type++;
 669             p_es->psz_ptname = "AMR";
 670             p_es->i_clock_rate = 8000;
 671             if(p_fmt->audio.i_channels == 2 )
 672                 p_es->i_channels = 2;
 673             p_es->psz_fmtp = strdup( "octet-align=1" );
 674             break;
 675         case VLC_CODEC_AMR_WB:
 676             p_es->i_payload_type = p_media->i_payload_type++;
 677             p_es->psz_ptname = "AMR-WB";
 678             p_es->i_clock_rate = 16000;
 679             if(p_fmt->audio.i_channels == 2 )
 680                 p_es->i_channels = 2;
 681             p_es->psz_fmtp = strdup( "octet-align=1" );
 682             break;
 683
 684         default:
 685             msg_Err( p_vod, "cannot add this stream (unsupported "
 686                     "codec: %4.4s)", (char*)&p_fmt->i_codec );
 687             free( psz_urlc );
 688             free( p_es );
 689             return VLC_EGENERIC;
 690     }
 691
 692     p_es->p_rtsp_url =
 693         httpd_UrlNewUnique( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL,
 694                             NULL );
 695
 696     if( !p_es->p_rtsp_url )
 697     {
 698         msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
 699         free( psz_urlc );
 700         free( p_es );
 701         return VLC_EGENERIC;
 702     }
 703     free( psz_urlc );
 704
 705     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
 706                     RtspCallbackES, (void*)p_es );
 707     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 708                     RtspCallbackES, (void*)p_es );
 709     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
 710                     RtspCallbackES, (void*)p_es );
 711     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
 712                     RtspCallbackES, (void*)p_es );
 713
 714     es_format_Copy( &p_es->fmt, p_fmt );
 715     p_es->p_vod = p_vod;
 716     p_es->p_media = p_media;
 717
 718     vlc_mutex_lock( &p_media->lock );
 719     TAB_APPEND( p_media->i_es, p_media->es, p_es );
 720     vlc_mutex_unlock( &p_media->lock );
 721
 722     return VLC_SUCCESS;
 723 }
 724
 725 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
 726 {
 727     media_es_t *p_es = NULL;
 728     int i;
 729
 730     /* Find the ES */
 731     for( i = 0; i < p_media->i_es; i++ )
 732     {
 733         if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
 734             p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
 735             p_media->es[i]->fmt.i_id == p_fmt->i_id )
 736         {
 737             p_es = p_media->es[i];
 738         }
 739     }
 740     if( !p_es ) return;
 741
 742     msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );
 743
 744     vlc_mutex_lock( &p_media->lock );
 745     TAB_REMOVE( p_media->i_es, p_media->es, p_es );
 746     vlc_mutex_unlock( &p_media->lock );
 747
 748     free( p_es->psz_fmtp );
 749
 750     if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
 751     es_format_Clean( &p_es->fmt );
 752     free( p_es );
 753 }
 754
 755 static void CommandPush( vod_t *p_vod, rtsp_cmd_type_t i_type, vod_media_t *p_media, const char *psz_session,
 756                          double f_arg, const char *psz_arg )
 757 {
 758     rtsp_cmd_t cmd;
 759     block_t *p_cmd;
 760
 761     memset( &cmd, 0, sizeof(cmd) );
 762     cmd.i_type = i_type;
 763     cmd.p_media = p_media;
 764     if( p_media )
 765         cmd.i_media_id = p_media->id;
 766     if( psz_session )
 767         cmd.psz_session = strdup(psz_session);
 768     cmd.f_arg = f_arg;
 769     if( psz_arg )
 770         cmd.psz_arg = strdup(psz_arg);
 771
 772     p_cmd = block_New( p_vod, sizeof(rtsp_cmd_t) );
 773     memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
 774
 775     block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
 776 }
 777
 778 static void* CommandThread( vlc_object_t *p_this )
 779 {
 780     vod_t *p_vod = (vod_t*)p_this;
 781     vod_sys_t *p_sys = p_vod->p_sys;
 782     int canc = vlc_savecancel ();
 783
 784     while( vlc_object_alive (p_vod) )
 785     {
 786         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 787         rtsp_cmd_t cmd;
 788         vod_media_t *p_media = NULL;
 789         int i;
 790
 791         if( !p_block_cmd )
 792             break;
 793
 794         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 795         block_Release( p_block_cmd );
 796
 797         if( cmd.i_type == RTSP_CMD_TYPE_NONE )
 798             break;
 799
 800         if ( cmd.i_type == RTSP_CMD_TYPE_ADD )
 801         {
 802             TAB_APPEND( p_sys->i_media, p_sys->media, cmd.p_media );
 803             goto next;
 804         }
 805
 806         if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 807         {
 808             MediaDel(p_vod, cmd.p_media);
 809             goto next;
 810         }
 811
 812         /* */
 813         for( i = 0; i < p_sys->i_media; i++ )
 814         {
 815             if( p_sys->media[i]->id == cmd.i_media_id )
 816                 break;
 817         }
 818         if( i >= p_sys->i_media )
 819         {
 820             goto next;
 821         }
 822         p_media = p_sys->media[i];
 823
 824         switch( cmd.i_type )
 825         {
 826         case RTSP_CMD_TYPE_PLAY:
 827             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 828                               VOD_MEDIA_PLAY, cmd.psz_arg );
 829             break;
 830         case RTSP_CMD_TYPE_PAUSE:
 831             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 832                               VOD_MEDIA_PAUSE );
 833             break;
 834
 835         case RTSP_CMD_TYPE_STOP:
 836             vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
 837             break;
 838
 839         case RTSP_CMD_TYPE_SEEK:
 840             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 841                               VOD_MEDIA_SEEK, cmd.f_arg );
 842             break;
 843
 844         case RTSP_CMD_TYPE_REWIND:
 845             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 846                               VOD_MEDIA_REWIND, cmd.f_arg );
 847             break;
 848
 849         case RTSP_CMD_TYPE_FORWARD:
 850             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 851                               VOD_MEDIA_FORWARD, cmd.f_arg );
 852             break;
 853
 854         default:
 855             break;
 856         }
 857
 858     next:
 859         free( cmd.psz_session );
 860         free( cmd.psz_arg );
 861     }
 862
 863     vlc_restorecancel (canc);
 864     return NULL;
 865 }
 866
 867 /****************************************************************************
 868  * RTSP server implementation
 869  ****************************************************************************/
 870 static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
 871 {
 872     rtsp_client_t *p_rtsp = calloc( 1, sizeof(rtsp_client_t) );
 873
 874     if( !p_rtsp )
 875         return NULL;
 876     p_rtsp->es = 0;
 877
 878     p_rtsp->psz_session = psz_session;
 879     TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 880
 881     p_media->p_vod->p_sys->i_connections++;
 882     msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
 883              psz_session, p_media->p_vod->p_sys->i_throttle_users );
 884
 885     return p_rtsp;
 886 }
 887
 888 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
 889 {
 890     int i;
 891
 892     for( i = 0; psz_session && i < p_media->i_rtsp; i++ )
 893     {
 894         if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
 895             return p_media->rtsp[i];
 896     }
 897
 898     return NULL;
 899 }
 900
 901 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
 902 {
 903     p_media->p_vod->p_sys->i_connections--;
 904     msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
 905              p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
 906
 907     while( p_rtsp->i_es )
 908     {
 909         p_rtsp->i_es--;
 910         free( p_rtsp->es[p_rtsp->i_es] );
 911     }
 912     free( p_rtsp->es );
 913
 914     TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 915
 916     free( p_rtsp->psz_session );
 917     free( p_rtsp );
 918 }
 919
 920
 921 static float ParseNPT (const char *str)
 922 {
 923     locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
 924     locale_t oldloc = uselocale (loc);
 925     unsigned hour, min;
 926     float sec;
 927
 928     if (sscanf (str, "%u:%u:%f", &hour, &min, &sec) == 3)
 929         sec += ((hour * 60) + min) * 60;
 930     else
 931     if (sscanf (str, "%f", &sec) != 1)
 932         sec = 0.;
 933
 934     if (loc != (locale_t)0)
 935     {
 936         uselocale (oldloc);
 937         freelocale (loc);
 938     }
 939     return sec;
 940 }
 941
 942
 943 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
 944                          httpd_message_t *answer, const httpd_message_t *query )
 945 {
 946     vod_media_t *p_media = (vod_media_t*)p_args;
 947     vod_t *p_vod = p_media->p_vod;
 948     const char *psz_transport = NULL;
 949     const char *psz_playnow = NULL; /* support option: x-playNow */
 950     const char *psz_session = NULL;
 951     const char *psz_cseq = NULL;
 952     rtsp_client_t *p_rtsp;
 953     int i_port = 0;
 954     int i_cseq = 0;
 955
 956     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
 957
 958     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
 959
 960     answer->i_proto   = HTTPD_PROTO_RTSP;
 961     answer->i_version = query->i_version;
 962     answer->i_type    = HTTPD_MSG_ANSWER;
 963     answer->i_body    = 0;
 964     answer->p_body    = NULL;
 965
 966     switch( query->i_type )
 967     {
 968         case HTTPD_MSG_SETUP:
 969         {
 970             psz_playnow = httpd_MsgGet( query, "x-playNow" );
 971             psz_transport = httpd_MsgGet( query, "Transport" );
 972             if( psz_transport == NULL )
 973             {
 974                 answer->i_status = 400;
 975                 break;
 976             }
 977             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
 978
 979             if( strstr( psz_transport, "unicast" ) &&
 980                 strstr( psz_transport, "client_port=" ) )
 981             {
 982                 rtsp_client_t *p_rtsp = NULL;
 983                 char ip[NI_MAXNUMERICHOST];
 984                 i_port = atoi( strstr( psz_transport, "client_port=" ) +
 985                                 strlen("client_port=") );
 986
 987                 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
 988                     strstr( psz_transport, "RAW/RAW/UDP" ) )
 989                 {
 990                     p_media->psz_mux = p_vod->p_sys->psz_raw_mux;
 991                     p_media->b_raw = true;
 992                 }
 993
 994                 if( httpd_ClientIP( cl, ip ) == NULL )
 995                 {
 996                     answer->i_status = 500;
 997                     answer->i_body = 0;
 998                     answer->p_body = NULL;
 999                     break;
1000                 }
1001
1002                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1003                          ip, i_port );
1004
1005                 psz_session = httpd_MsgGet( query, "Session" );
1006                 if( !psz_session || !*psz_session )
1007                 {
1008                     char *psz_new;
1009                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1010                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1011                     {
1012                         answer->i_status = 503;
1013                         answer->i_body = 0;
1014                         answer->p_body = NULL;
1015                         break;
1016                     }
1017 #warning Should use secure randomness here! (spoofing risk)
1018                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1019                         return VLC_ENOMEM;
1020                     psz_session = psz_new;
1021
1022                     p_rtsp = RtspClientNew( p_media, psz_new );
1023                     if( !p_rtsp )
1024                     {
1025                         answer->i_status = 454;
1026                         answer->i_body = 0;
1027                         answer->p_body = NULL;
1028                         break;
1029                     }
1030                 }
1031                 else
1032                 {
1033                     p_rtsp = RtspClientGet( p_media, psz_session );
1034                     if( !p_rtsp )
1035                     {
1036                         answer->i_status = 454;
1037                         answer->i_body = 0;
1038                         answer->p_body = NULL;
1039                         break;
1040                     }
1041                 }
1042
1043                 answer->i_status = 200;
1044                 answer->i_body = 0;
1045                 answer->p_body = NULL;
1046
1047                 if( p_media->b_raw )
1048                 {
1049                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1050                     {
1051                         httpd_MsgAdd( answer, "Transport",
1052                                       "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1053                                       i_port, i_port + 1 );
1054                     }
1055                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1056                     {
1057                         httpd_MsgAdd( answer, "Transport",
1058                                       "RAW/RAW/UDP;unicast;client_port=%d-%d",
1059                                       i_port, i_port + 1 );
1060                     }
1061                 }
1062                 else
1063                     httpd_MsgAdd( answer, "Transport",
1064                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1065                                   i_port, i_port + 1 );
1066             }
1067             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1068             {
1069                 answer->i_status = 461;
1070                 answer->i_body = 0;
1071                 answer->p_body = NULL;
1072             }
1073
1074             /* Intentional fall-through on x-playNow option in RTSP request */
1075             if( !psz_playnow )
1076                 break;
1077         }
1078
1079         case HTTPD_MSG_PLAY:
1080         {
1081             char *psz_output, ip[NI_MAXNUMERICHOST];
1082             int i, i_port_audio = 0, i_port_video = 0;
1083
1084             /* for now only multicast so easy */
1085             if( !psz_playnow )
1086             {
1087                 answer->i_status = 200;
1088                 answer->i_body = 0;
1089                 answer->p_body = NULL;
1090             }
1091
1092             if( !psz_session )
1093                 psz_session = httpd_MsgGet( query, "Session" );
1094             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1095
1096             p_rtsp = RtspClientGet( p_media, psz_session );
1097             if( !p_rtsp )
1098             {
1099                 answer->i_status = 500;
1100                 answer->i_body = 0;
1101                 answer->p_body = NULL;
1102                 break;
1103             }
1104
1105             if( p_rtsp->b_playing )
1106             {
1107                 const char *psz_position = httpd_MsgGet( query, "Range" );
1108                 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1109                 if( psz_position )
1110                     psz_position = strstr( psz_position, "npt=" );
1111                 if( psz_position && !psz_scale )
1112                 {
1113                     double f_pos = ParseNPT (psz_position + 4);
1114                     msg_Dbg( p_vod, "seeking request: %s", psz_position );
1115                     f_pos /= ((double)(p_media->i_length)) / CLOCK_FREQ / 100;
1116                     CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1117                                  psz_session, f_pos, NULL );
1118                 }
1119                 else if( psz_scale )
1120                 {
1121                     double f_scale = 0.0;
1122                     char *end;
1123
1124                     f_scale = us_strtod( psz_scale, &end );
1125                     if( end > psz_scale )
1126                     {
1127                         f_scale = (f_scale * 30.0);
1128                         if( psz_scale[0] == '-' ) /* rewind */
1129                         {
1130                             msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1131                             CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
1132                                          psz_session, f_scale, NULL );
1133                         }
1134                         else if(psz_scale[0] != '1' ) /* fast-forward */
1135                         {
1136                             msg_Dbg( p_vod, "fastforward request: %s",
1137                                      psz_scale );
1138                             CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
1139                                          psz_session, f_scale, NULL );
1140                         }
1141
1142                         if( p_rtsp->b_paused )
1143                         {
1144                             p_rtsp->b_paused = false;
1145                             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1146                                          psz_session, 0, NULL );
1147                         }
1148                     }
1149                     break;
1150                 }
1151             }
1152
1153             if( p_rtsp->b_playing && p_rtsp->b_paused )
1154             {
1155                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1156                              psz_session, 0, NULL );
1157                 p_rtsp->b_paused = false;
1158                 break;
1159             }
1160             else if( p_rtsp->b_playing ) break;
1161
1162             if( httpd_ClientIP( cl, ip ) == NULL ) break;
1163
1164             p_rtsp->b_playing = true;
1165
1166             /* FIXME for != 1 video and 1 audio */
1167             for( i = 0; i < p_rtsp->i_es; i++ )
1168             {
1169                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1170                     i_port_audio = p_rtsp->es[i]->i_port;
1171                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1172                     i_port_video = p_rtsp->es[i]->i_port;
1173             }
1174
1175             if( p_media->psz_mux )
1176             {
1177                 if( p_media->b_raw )
1178                 {
1179                     if( asprintf( &psz_output,
1180                               "std{access=udp,dst=%s:%i,mux=%s}",
1181                               ip, i_port, p_media->psz_mux ) < 0 )
1182                         return VLC_ENOMEM;
1183                 }
1184                 else
1185                 {
1186                     if( asprintf( &psz_output,
1187                               "rtp{dst=%s,port=%i,mux=%s}",
1188                               ip, i_port_video, p_media->psz_mux ) < 0 )
1189                         return VLC_ENOMEM;
1190                 }
1191             }
1192             else
1193             {
1194                 if( asprintf( &psz_output,
1195                               "rtp{dst=%s,port-video=%i,port-audio=%i}",
1196                               ip, i_port_video, i_port_audio ) < 0 )
1197                     return VLC_ENOMEM;
1198             }
1199
1200             CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1201                          0, psz_output );
1202             free( psz_output );
1203             break;
1204         }
1205
1206         case HTTPD_MSG_DESCRIBE:
1207         {
1208             char *psz_sdp =
1209                 SDPGenerate( p_media, cl );
1210
1211             if( psz_sdp != NULL )
1212             {
1213                 answer->i_status = 200;
1214                 httpd_MsgAdd( answer, "Content-type",  "%s",
1215                               "application/sdp" );
1216
1217                 answer->p_body = (uint8_t *)psz_sdp;
1218                 answer->i_body = strlen( psz_sdp );
1219             }
1220             else
1221             {
1222                 answer->i_status = 500;
1223                 answer->p_body = NULL;
1224                 answer->i_body = 0;
1225             }
1226             break;
1227         }
1228
1229         case HTTPD_MSG_PAUSE:
1230             psz_session = httpd_MsgGet( query, "Session" );
1231             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1232
1233             p_rtsp = RtspClientGet( p_media, psz_session );
1234             if( !p_rtsp ) break;
1235
1236             if( !p_rtsp->b_paused )
1237             {
1238                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1239                              0, NULL );
1240                 p_rtsp->b_paused = true;
1241             }
1242
1243             answer->i_status = 200;
1244             answer->i_body = 0;
1245             answer->p_body = NULL;
1246             break;
1247
1248         case HTTPD_MSG_TEARDOWN:
1249             /* for now only multicast so easy again */
1250             answer->i_status = 200;
1251             answer->i_body = 0;
1252             answer->p_body = NULL;
1253
1254             psz_session = httpd_MsgGet( query, "Session" );
1255             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1256
1257             p_rtsp = RtspClientGet( p_media, psz_session );
1258             if( !p_rtsp ) break;
1259
1260             CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1261                          0, NULL );
1262             RtspClientDel( p_media, p_rtsp );
1263             break;
1264
1265         case HTTPD_MSG_GETPARAMETER:
1266             answer->i_status = 200;
1267             answer->i_body = 0;
1268             answer->p_body = NULL;
1269             break;
1270
1271         default:
1272             return VLC_EGENERIC;
1273     }
1274
1275     httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1276     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1277     psz_cseq = httpd_MsgGet( query, "Cseq" );
1278     psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1279     httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1280     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1281
1282     if( psz_session )
1283     {
1284          if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
1285              httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1286                p_media->p_vod->p_sys->i_session_timeout );
1287          else
1288               httpd_MsgAdd( answer, "Session", "%s", psz_session );
1289     }
1290
1291     return VLC_SUCCESS;
1292 }
1293
1294 static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1295                            httpd_message_t *answer,
1296                            const httpd_message_t *query )
1297 {
1298     media_es_t *p_es = (media_es_t*)p_args;
1299     vod_media_t *p_media = p_es->p_media;
1300     vod_t *p_vod = p_media->p_vod;
1301     rtsp_client_t *p_rtsp = NULL;
1302     const char *psz_transport = NULL;
1303     const char *psz_playnow = NULL; /* support option: x-playNow */
1304     const char *psz_session = NULL;
1305     const char *psz_position = NULL;
1306     const char *psz_cseq = NULL;
1307     int i_cseq = 0;
1308     int i;
1309
1310     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1311
1312     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1313
1314     answer->i_proto   = HTTPD_PROTO_RTSP;
1315     answer->i_version = query->i_version;
1316     answer->i_type    = HTTPD_MSG_ANSWER;
1317     answer->i_body    = 0;
1318     answer->p_body      = NULL;
1319
1320     switch( query->i_type )
1321     {
1322         case HTTPD_MSG_SETUP:
1323             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1324             psz_transport = httpd_MsgGet( query, "Transport" );
1325
1326             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1327
1328             if( strstr( psz_transport, "unicast" ) &&
1329                 strstr( psz_transport, "client_port=" ) )
1330             {
1331                 rtsp_client_t *p_rtsp = NULL;
1332                 rtsp_client_es_t *p_rtsp_es = NULL;
1333                 char ip[NI_MAXNUMERICHOST];
1334                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
1335                                    strlen("client_port=") );
1336
1337                 if( httpd_ClientIP( cl, ip ) == NULL )
1338                 {
1339                     answer->i_status = 500;
1340                     answer->i_body = 0;
1341                     answer->p_body = NULL;
1342                     break;
1343                 }
1344
1345                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1346                         ip, i_port );
1347
1348                 psz_session = httpd_MsgGet( query, "Session" );
1349                 if( !psz_session || !*psz_session )
1350                 {
1351                     char *psz_new;
1352                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1353                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1354                     {
1355                         answer->i_status = 503;
1356                         answer->i_body = 0;
1357                         answer->p_body = NULL;
1358                         break;
1359                     }
1360 #warning Session ID should be securely random (spoofing risk)
1361                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1362                         return VLC_ENOMEM;
1363                     psz_session = psz_new;
1364
1365                     p_rtsp = RtspClientNew( p_media, psz_new );
1366                     if( !p_rtsp )
1367                     {
1368                         answer->i_status = 454;
1369                         answer->i_body = 0;
1370                         answer->p_body = NULL;
1371                         break;
1372                     }
1373                 }
1374                 else
1375                 {
1376                     p_rtsp = RtspClientGet( p_media, psz_session );
1377                     if( !p_rtsp )
1378                     {
1379                         answer->i_status = 454;
1380                         answer->i_body = 0;
1381                         answer->p_body = NULL;
1382                         break;
1383                     }
1384                 }
1385
1386                 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1387                 if( !p_rtsp_es )
1388                 {
1389                     answer->i_status = 500;
1390                     answer->i_body = 0;
1391                     answer->p_body = NULL;
1392                     break;
1393                 }
1394                 p_rtsp_es->i_port = i_port;
1395                 p_rtsp_es->p_media_es = p_es;
1396                 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1397
1398                 answer->i_status = 200;
1399                 answer->i_body = 0;
1400                 answer->p_body = NULL;
1401
1402                 if( p_media->b_raw )
1403                 {
1404                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1405                     {
1406                         httpd_MsgAdd( answer, "Transport",
1407                                      "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1408                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1409                     }
1410                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1411                     {
1412                         httpd_MsgAdd( answer, "Transport",
1413                                      "RAW/RAW/UDP;unicast;client_port=%d-%d",
1414                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1415                     }
1416                 }
1417                 else
1418                 {
1419                     httpd_MsgAdd( answer, "Transport",
1420                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1421                                   p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1422                 }
1423             }
1424             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1425             {
1426                 answer->i_status = 461;
1427                 answer->i_body = 0;
1428                 answer->p_body = NULL;
1429             }
1430
1431             /* Intentional fall-through on x-playNow option in RTSP request */
1432             if( !psz_playnow )
1433                 break;
1434
1435         case HTTPD_MSG_PLAY:
1436             /* This is kind of a kludge. Should we only support Aggregate
1437              * Operations ? */
1438             psz_session = httpd_MsgGet( query, "Session" );
1439             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1440
1441             p_rtsp = RtspClientGet( p_media, psz_session );
1442
1443             psz_position = httpd_MsgGet( query, "Range" );
1444             if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1445             if( psz_position )
1446             {
1447                 double f_pos = ParseNPT (psz_position + 4);
1448                 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1449                 f_pos /= ((double)(p_media->i_length)) / CLOCK_FREQ / 100;
1450                 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1451                              psz_session, f_pos, NULL );
1452             }
1453
1454             if( !psz_playnow )
1455             {
1456                 answer->i_status = 200;
1457                 answer->i_body = 0;
1458                 answer->p_body = NULL;
1459             }
1460             break;
1461
1462         case HTTPD_MSG_TEARDOWN:
1463             answer->i_status = 200;
1464             answer->i_body = 0;
1465             answer->p_body = NULL;
1466
1467             psz_session = httpd_MsgGet( query, "Session" );
1468             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1469
1470             p_rtsp = RtspClientGet( p_media, psz_session );
1471             if( !p_rtsp ) break;
1472
1473             for( i = 0; i < p_rtsp->i_es; i++ )
1474             {
1475                 if( p_rtsp->es[i]->p_media_es == p_es )
1476                 {
1477                     TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, p_rtsp->es[i] );
1478                     break;
1479                 }
1480             }
1481
1482             if( !p_rtsp->i_es )
1483             {
1484                 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1485                              0, NULL );
1486                 RtspClientDel( p_media, p_rtsp );
1487             }
1488             break;
1489
1490         case HTTPD_MSG_PAUSE:
1491             /* This is kind of a kludge. Should we only support Aggregate
1492              * Operations ? */
1493             psz_session = httpd_MsgGet( query, "Session" );
1494             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1495
1496             p_rtsp = RtspClientGet( p_media, psz_session );
1497             if( !p_rtsp ) break;
1498
1499             if( !p_rtsp->b_paused )
1500             {
1501                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1502                              0, NULL );
1503                 p_rtsp->b_paused = true;
1504             }
1505
1506             answer->i_status = 200;
1507             answer->i_body = 0;
1508             answer->p_body = NULL;
1509             break;
1510
1511         default:
1512             return VLC_EGENERIC;
1513             break;
1514     }
1515
1516     httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1517     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1518     psz_cseq = httpd_MsgGet( query, "Cseq" );
1519     if (psz_cseq)
1520         i_cseq = atoi( psz_cseq );
1521     else
1522         i_cseq = 0;
1523     httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1524     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1525
1526     if( psz_session )
1527         httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1528
1529     return VLC_SUCCESS;
1530 }
1531
1532 /*****************************************************************************
1533  * SDPGenerate: TODO
1534  * FIXME: need to be moved to a common place ?
1535  *****************************************************************************/
1536 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1537 {
1538     char *psz_sdp, ip[NI_MAXNUMERICHOST];
1539     const char *psz_control;
1540
1541     if( httpd_ServerIP( cl, ip ) == NULL )
1542         return NULL;
1543
1544     bool ipv6 = ( strchr( ip, ':' ) != NULL );
1545
1546     psz_control = ipv6 ? p_media->psz_rtsp_control_v6
1547                        : p_media->psz_rtsp_control_v4;
1548
1549     /* Dummy destination address for RTSP */
1550     struct sockaddr_storage dst;
1551     socklen_t dstlen = ipv6 ? sizeof( struct sockaddr_in6 )
1552                             : sizeof( struct sockaddr_in );
1553     memset (&dst, 0, dstlen);
1554     dst.ss_family = ipv6 ? AF_INET6 : AF_INET;
1555 #ifdef HAVE_SA_LEN
1556     dst.ss_len = dstlen;
1557 #endif
1558
1559     psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_media->p_vod ), "sout-rtp-",
1560                              NULL, 0, (struct sockaddr *)&dst, dstlen );
1561     if( psz_sdp == NULL )
1562         return NULL;
1563
1564     if( p_media->i_length > 0 )
1565     {
1566         lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
1567         sdp_AddAttribute( &psz_sdp, "range"," npt=0-%lld.%03u", d.quot,
1568                           (unsigned)d.rem );
1569     }
1570
1571     for( int i = 0; i < p_media->i_es; i++ )
1572     {
1573         media_es_t *p_es = p_media->es[i];
1574         const char *mime_major; /* major MIME type */
1575
1576         switch( p_es->fmt.i_cat )
1577         {
1578             case VIDEO_ES:
1579                 mime_major = "video";
1580                 break;
1581             case AUDIO_ES:
1582                 mime_major = "audio";
1583                 break;
1584             case SPU_ES:
1585                 mime_major = "text";
1586                 break;
1587             default:
1588                 continue;
1589         }
1590
1591         sdp_AddMedia( &psz_sdp, mime_major, "RTP/AVP", 0 /* p_es->i_port */,
1592                       p_es->i_payload_type, false, 0,
1593                       p_es->psz_ptname, p_es->i_clock_rate, p_es->i_channels,
1594                       p_es->psz_fmtp );
1595
1596         sdp_AddAttribute( &psz_sdp, "control", psz_control, ip, i );
1597     }
1598
1599     return psz_sdp;
1600 }