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
  46 #include <errno.h>
  47
  48 #ifndef WIN32
  49 # include <locale.h>
  50 #endif
  51
  52 #ifdef HAVE_XLOCALE_H
  53 # include <xlocale.h>
  54 #endif
  55
  56 /*****************************************************************************
  57  * Module descriptor
  58  *****************************************************************************/
  59 static int  Open ( vlc_object_t * );
  60 static void Close( vlc_object_t * );
  61
  62 #define HOST_TEXT N_( "RTSP host address" )
  63 #define HOST_LONGTEXT N_( \
  64     "This defines the address, port and path the RTSP VOD server will listen " \
  65     "on.\nSyntax is address:port/path. The default is to listen on all "\
  66     "interfaces (address 0.0.0.0), on port 554, with no path.\nTo listen " \
  67     "only on the local interface, use \"localhost\" as address." )
  68
  69 #define THROTLE_TEXT N_( "Maximum number of connections" )
  70 #define THROTLE_LONGTEXT N_( "This limits the maximum number of clients " \
  71     "that can connect to the RTSP VOD. 0 means no limit."  )
  72
  73 #define RAWMUX_TEXT N_( "MUX for RAW RTSP transport" )
  74
  75 #define SESSION_TIMEOUT_TEXT N_( "Sets the timeout option in the RTSP " \
  76     "session string" )
  77 #define SESSION_TIMEOUT_LONGTEXT N_( "Defines what timeout option to add " \
  78     "to the RTSP session ID string. Setting it to a negative number removes " \
  79     "the timeout option entirely. This is needed by some IPTV STBs (such as " \
  80     "those made by HansunTech) which get confused by it. The default is 5." )
  81
  82 vlc_module_begin ()
  83     set_shortname( N_("RTSP VoD" ) )
  84     set_description( N_("RTSP VoD server") )
  85     set_category( CAT_SOUT )
  86     set_subcategory( SUBCAT_SOUT_VOD )
  87     set_capability( "vod server", 1 )
  88     set_callbacks( Open, Close )
  89     add_shortcut( "rtsp" )
  90     add_string ( "rtsp-host", NULL, NULL, HOST_TEXT, HOST_LONGTEXT, true )
  91     add_string( "rtsp-raw-mux", "ts", NULL, RAWMUX_TEXT,
  92                 RAWMUX_TEXT, true )
  93     add_integer( "rtsp-throttle-users", 0, NULL, THROTLE_TEXT,
  94                                            THROTLE_LONGTEXT, true )
  95     add_integer( "rtsp-session-timeout", 5, NULL, SESSION_TIMEOUT_TEXT,
  96                  SESSION_TIMEOUT_LONGTEXT, true )
  97 vlc_module_end ()
  98
  99 /*****************************************************************************
 100  * Exported prototypes
 101  *****************************************************************************/
 102
 103 typedef struct media_es_t media_es_t;
 104
 105 typedef struct
 106 {
 107     media_es_t *p_media_es;
 108     char *psz_ip;
 109     int i_port;
 110
 111 } rtsp_client_es_t;
 112
 113 typedef struct
 114 {
 115     char *psz_session;
 116     int64_t i_last; /* for timeout */
 117
 118     bool b_playing; /* is it in "play" state */
 119     bool b_paused; /* is it in "pause" state */
 120
 121     int i_es;
 122     rtsp_client_es_t **es;
 123
 124 } rtsp_client_t;
 125
 126 struct media_es_t
 127 {
 128     /* VoD server */
 129     vod_t *p_vod;
 130
 131     /* RTSP server */
 132     httpd_url_t *p_rtsp_url;
 133
 134     vod_media_t *p_media;
 135
 136     es_format_t fmt;
 137     int         i_port;
 138     uint8_t     i_payload_type;
 139     char        *psz_rtpmap;
 140     char        *psz_fmtp;
 141
 142 };
 143
 144 struct vod_media_t
 145 {
 146     int id;
 147
 148     /* VoD server */
 149     vod_t *p_vod;
 150
 151     /* RTSP server */
 152     httpd_url_t  *p_rtsp_url;
 153     char         *psz_rtsp_control_v4;
 154     char         *psz_rtsp_control_v6;
 155     char         *psz_rtsp_path;
 156
 157     int  i_port;
 158     int  i_port_audio;
 159     int  i_port_video;
 160     int  i_ttl;
 161     int  i_payload_type;
 162
 163     int64_t i_sdp_id;
 164     int     i_sdp_version;
 165
 166     bool b_multicast;
 167
 168     vlc_mutex_t lock;
 169
 170     /* ES list */
 171     int        i_es;
 172     media_es_t **es;
 173     char       *psz_mux;
 174     bool  b_raw;
 175
 176     /* RTSP client */
 177     int           i_rtsp;
 178     rtsp_client_t **rtsp;
 179
 180     /* Infos */
 181     char *psz_session_name;
 182     char *psz_session_description;
 183     char *psz_session_url;
 184     char *psz_session_email;
 185     mtime_t i_length;
 186 };
 187
 188 struct vod_sys_t
 189 {
 190     /* RTSP server */
 191     httpd_host_t *p_rtsp_host;
 192     char *psz_path;
 193     int i_port;
 194     int i_throttle_users;
 195     int i_connections;
 196
 197     char *psz_raw_mux;
 198
 199     int i_session_timeout;
 200
 201     /* List of media */
 202     vlc_mutex_t lock_media;
 203     int i_media_id;
 204     int i_media;
 205     vod_media_t **media;
 206
 207     /* */
 208     block_fifo_t *p_fifo_cmd;
 209 };
 210
 211 /* rtsp delayed command (to avoid deadlock between vlm/httpd) */
 212 typedef enum
 213 {
 214     RTSP_CMD_TYPE_NONE,  /* Exit requested */
 215
 216     RTSP_CMD_TYPE_PLAY,
 217     RTSP_CMD_TYPE_PAUSE,
 218     RTSP_CMD_TYPE_STOP,
 219     RTSP_CMD_TYPE_SEEK,
 220     RTSP_CMD_TYPE_REWIND,
 221     RTSP_CMD_TYPE_FORWARD,
 222 } rtsp_cmd_type_t;
 223
 224 /* */
 225 typedef struct
 226 {
 227     int i_type;
 228     int i_media_id;
 229     //vod_media_t *p_media;
 230     char *psz_session;
 231     char *psz_arg;
 232     double f_arg;
 233 } rtsp_cmd_t;
 234
 235 static vod_media_t *MediaNew( vod_t *, const char *, input_item_t * );
 236 static void         MediaDel( vod_t *, vod_media_t * );
 237 static int          MediaAddES( vod_t *, vod_media_t *, es_format_t * );
 238 static void         MediaDelES( vod_t *, vod_media_t *, es_format_t * );
 239
 240 static void* CommandThread( vlc_object_t *p_this );
 241 static void  CommandPush( vod_t *, rtsp_cmd_type_t, vod_media_t *, const char *psz_session,
 242                           double f_arg, const char *psz_arg );
 243
 244 static rtsp_client_t *RtspClientNew( vod_media_t *, char * );
 245 static rtsp_client_t *RtspClientGet( vod_media_t *, const char * );
 246 static void           RtspClientDel( vod_media_t *, rtsp_client_t * );
 247
 248 static int RtspCallback( httpd_callback_sys_t *, httpd_client_t *,
 249                          httpd_message_t *, const httpd_message_t * );
 250 static int RtspCallbackES( httpd_callback_sys_t *, httpd_client_t *,
 251                            httpd_message_t *, const httpd_message_t * );
 252
 253 static char *SDPGenerate( const vod_media_t *, httpd_client_t *cl );
 254
 255 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
 256 {
 257     static const char hex[16] = "0123456789abcdef";
 258     int i;
 259
 260     for( i = 0; i < i_data; i++ )
 261     {
 262         s[2*i+0] = hex[(p_data[i]>>4)&0xf];
 263         s[2*i+1] = hex[(p_data[i]   )&0xf];
 264     }
 265     s[2*i_data] = '\0';
 266 }
 267
 268 /*****************************************************************************
 269  * Open: Starts the RTSP server module
 270  *****************************************************************************/
 271 static int Open( vlc_object_t *p_this )
 272 {
 273     vod_t *p_vod = (vod_t *)p_this;
 274     vod_sys_t *p_sys = NULL;
 275     char *psz_url = NULL;
 276     vlc_url_t url;
 277
 278     psz_url = config_GetPsz( p_vod, "rtsp-host" );
 279     vlc_UrlParse( &url, psz_url, 0 );
 280     free( psz_url );
 281
 282     if( url.i_port <= 0 ) url.i_port = 554;
 283
 284     p_vod->p_sys = p_sys = malloc( sizeof( vod_sys_t ) );
 285     if( !p_sys ) goto error;
 286     p_sys->p_rtsp_host = 0;
 287
 288     p_sys->i_session_timeout = var_CreateGetInteger( p_this, "rtsp-session-timeout" );
 289
 290     p_sys->i_throttle_users = var_CreateGetInteger( p_this, "rtsp-throttle-users" );
 291     msg_Dbg( p_this, "allowing up to %d connections", p_sys->i_throttle_users );
 292     p_sys->i_connections = 0;
 293
 294     p_sys->psz_raw_mux = var_CreateGetString( p_this, "rtsp-raw-mux" );
 295
 296     p_sys->p_rtsp_host =
 297         httpd_HostNew( VLC_OBJECT(p_vod), url.psz_host, url.i_port );
 298     if( !p_sys->p_rtsp_host )
 299     {
 300         msg_Err( p_vod, "cannot create RTSP server (%s:%i)",
 301                  url.psz_host, url.i_port );
 302         goto error;
 303     }
 304
 305     p_sys->psz_path = strdup( url.psz_path ? url.psz_path : "/" );
 306     p_sys->i_port = url.i_port;
 307
 308     vlc_UrlClean( &url );
 309
 310     vlc_mutex_init( &p_sys->lock_media );
 311
 312     TAB_INIT( p_sys->i_media, p_sys->media );
 313     p_sys->i_media_id = 0;
 314
 315     p_vod->pf_media_new = MediaNew;
 316     p_vod->pf_media_del = MediaDel;
 317     p_vod->pf_media_add_es = MediaAddES;
 318     p_vod->pf_media_del_es = MediaDelES;
 319
 320     p_sys->p_fifo_cmd = block_FifoNew();
 321     if( vlc_thread_create( p_vod, "rtsp vod thread", CommandThread,
 322                            VLC_THREAD_PRIORITY_LOW ) )
 323     {
 324         msg_Err( p_vod, "cannot spawn rtsp vod thread" );
 325         block_FifoRelease( p_sys->p_fifo_cmd );
 326         free( p_sys->psz_path );
 327         goto error;
 328     }
 329
 330     return VLC_SUCCESS;
 331
 332 error:
 333     if( p_sys )
 334     {
 335         if( p_sys->p_rtsp_host ) httpd_HostDelete( p_sys->p_rtsp_host );
 336         free( p_sys->psz_raw_mux );
 337         free( p_sys );
 338     }
 339     vlc_UrlClean( &url );
 340
 341     return VLC_EGENERIC;
 342 }
 343
 344 /*****************************************************************************
 345  * Close:
 346  *****************************************************************************/
 347 static void Close( vlc_object_t * p_this )
 348 {
 349     vod_t *p_vod = (vod_t *)p_this;
 350     vod_sys_t *p_sys = p_vod->p_sys;
 351     block_t *p_block_cmd;
 352     rtsp_cmd_t cmd;
 353
 354     /* Stop command thread */
 355     vlc_object_kill( p_vod );
 356     CommandPush( p_vod, RTSP_CMD_TYPE_NONE, NULL, NULL, 0.0, NULL );
 357     vlc_thread_join( p_vod );
 358
 359     while( block_FifoCount( p_sys->p_fifo_cmd ) > 0 )
 360     {
 361          p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 362          memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 363          block_Release( p_block_cmd );
 364          free( cmd.psz_session );
 365          free( cmd.psz_arg );
 366     }
 367     block_FifoRelease( p_sys->p_fifo_cmd );
 368
 369     httpd_HostDelete( p_sys->p_rtsp_host );
 370     var_Destroy( p_this, "rtsp-session-timeout" );
 371     var_Destroy( p_this, "rtsp-throttle-users" );
 372     var_Destroy( p_this, "rtsp-raw-mux" );
 373
 374     /* Check VLM is not buggy */
 375     if( p_sys->i_media > 0 )
 376         msg_Err( p_vod, "rtsp vod leaking %d medias", p_sys->i_media );
 377     TAB_CLEAN( p_sys->i_media, p_sys->media );
 378
 379     vlc_mutex_destroy( &p_sys->lock_media );
 380
 381     free( p_sys->psz_path );
 382     free( p_sys->psz_raw_mux );
 383     free( p_sys );
 384 }
 385
 386 /*****************************************************************************
 387  * Media handling
 388  *****************************************************************************/
 389 static vod_media_t *MediaNew( vod_t *p_vod, const char *psz_name,
 390                               input_item_t *p_item )
 391 {
 392     int i;
 393     vod_sys_t *p_sys = p_vod->p_sys;
 394
 395     vod_media_t *p_media = calloc( 1, sizeof(vod_media_t) );
 396     if( !p_media )
 397         return NULL;
 398
 399     p_media->id = p_sys->i_media_id++;
 400     TAB_INIT( p_media->i_es, p_media->es );
 401     p_media->psz_mux = NULL;
 402     TAB_INIT( p_media->i_rtsp, p_media->rtsp );
 403     p_media->b_raw = false;
 404
 405     if( asprintf( &p_media->psz_rtsp_path, "%s%s",
 406                   p_sys->psz_path, psz_name ) <0 )
 407         return NULL;
 408     p_media->p_rtsp_url =
 409         httpd_UrlNewUnique( p_sys->p_rtsp_host, p_media->psz_rtsp_path, NULL,
 410                             NULL, NULL );
 411
 412     if( !p_media->p_rtsp_url )
 413     {
 414         msg_Err( p_vod, "cannot create RTSP url (%s)", p_media->psz_rtsp_path);
 415         free( p_media->psz_rtsp_path );
 416         free( p_media );
 417         return NULL;
 418     }
 419
 420     msg_Dbg( p_vod, "created RTSP url: %s", p_media->psz_rtsp_path );
 421
 422     if( asprintf( &p_media->psz_rtsp_control_v4,
 423                "a=control:rtsp://%%s:%d%s/trackID=%%d\r\n",
 424                p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 425     {
 426         httpd_UrlDelete( p_media->p_rtsp_url );
 427         free( p_media->psz_rtsp_path );
 428         free( p_media );
 429         return NULL;
 430     }
 431     if( asprintf( &p_media->psz_rtsp_control_v6,
 432                "a=control:rtsp://[%%s]:%d%s/trackID=%%d\r\n",
 433               p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 434     {
 435         httpd_UrlDelete( p_media->p_rtsp_url );
 436         free( p_media->psz_rtsp_path );
 437         free( p_media );
 438         return NULL;
 439     }
 440
 441     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_SETUP,
 442                     RtspCallback, (void*)p_media );
 443     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_DESCRIBE,
 444                     RtspCallback, (void*)p_media );
 445     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PLAY,
 446                     RtspCallback, (void*)p_media );
 447     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PAUSE,
 448                     RtspCallback, (void*)p_media );
 449     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_GETPARAMETER,
 450                     RtspCallback, (void*)p_media );
 451     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 452                     RtspCallback, (void*)p_media );
 453
 454     p_media->p_vod = p_vod;
 455
 456     vlc_mutex_lock( &p_sys->lock_media );
 457     TAB_APPEND( p_sys->i_media, p_sys->media, p_media );
 458     vlc_mutex_unlock( &p_sys->lock_media );
 459
 460     vlc_mutex_init( &p_media->lock );
 461     p_media->psz_session_name = strdup("");
 462     p_media->psz_session_description = strdup("");
 463     p_media->psz_session_url = strdup("");
 464     p_media->psz_session_email = strdup("");
 465
 466     p_media->i_port_audio = 1234;
 467     p_media->i_port_video = 1236;
 468     p_media->i_port       = 1238;
 469     p_media->i_payload_type = 96;
 470
 471     p_media->i_sdp_id = mdate();
 472     p_media->i_sdp_version = 1;
 473     p_media->i_length = input_item_GetDuration( p_item );
 474
 475     vlc_mutex_lock( &p_item->lock );
 476     msg_Dbg( p_vod, "media has %i declared ES", p_item->i_es );
 477     for( i = 0; i < p_item->i_es; i++ )
 478     {
 479         MediaAddES( p_vod, p_media, p_item->es[i] );
 480     }
 481     vlc_mutex_unlock( &p_item->lock );
 482
 483     return p_media;
 484 }
 485
 486 static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
 487 {
 488     vod_sys_t *p_sys = p_vod->p_sys;
 489
 490     msg_Dbg( p_vod, "deleting media: %s", p_media->psz_rtsp_path );
 491
 492     vlc_mutex_lock( &p_sys->lock_media );
 493     TAB_REMOVE( p_sys->i_media, p_sys->media, p_media );
 494     vlc_mutex_unlock( &p_sys->lock_media );
 495
 496     httpd_UrlDelete( p_media->p_rtsp_url );
 497
 498     while( p_media->i_rtsp > 0 )
 499         RtspClientDel( p_media, p_media->rtsp[0] );
 500     TAB_CLEAN( p_media->i_rtsp, p_media->rtsp );
 501
 502     free( p_media->psz_rtsp_path );
 503     free( p_media->psz_rtsp_control_v6 );
 504     free( p_media->psz_rtsp_control_v4 );
 505
 506     while( p_media->i_es )
 507         MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );
 508     TAB_CLEAN( p_media->i_es, p_media->es );
 509
 510     vlc_mutex_destroy( &p_media->lock );
 511
 512     free( p_media->psz_session_name );
 513     free( p_media->psz_session_description );
 514     free( p_media->psz_session_url );
 515     free( p_media->psz_session_email );
 516     free( p_media->psz_mux );
 517     free( p_media );
 518 }
 519
 520 static int MediaAddES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt )
 521 {
 522     char *psz_urlc;
 523     media_es_t *p_es = calloc( 1, sizeof(media_es_t) );
 524     if( !p_es )
 525         return VLC_ENOMEM;
 526
 527     free( p_media->psz_mux );
 528     p_media->psz_mux = NULL;
 529
 530     /* TODO: update SDP, etc... */
 531     if( asprintf( &psz_urlc, "%s/trackID=%d",
 532               p_media->psz_rtsp_path, p_media->i_es ) < 0 )
 533     {
 534         free( p_es );
 535         return VLC_ENOMEM;
 536     }
 537     msg_Dbg( p_vod, "  - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
 538
 539     switch( p_fmt->i_codec )
 540     {
 541         case VLC_CODEC_S16B:
 542             if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
 543             {
 544                 p_es->i_payload_type = 11;
 545             }
 546             else if( p_fmt->audio.i_channels == 2 &&
 547                      p_fmt->audio.i_rate == 44100 )
 548             {
 549                 p_es->i_payload_type = 10;
 550             }
 551             else
 552             {
 553                 p_es->i_payload_type = p_media->i_payload_type++;
 554             }
 555             if( asprintf( &p_es->psz_rtpmap, "L16/%d/%d", p_fmt->audio.i_rate,
 556                           p_fmt->audio.i_channels ) == -1 )
 557                 p_es->psz_rtpmap = NULL;
 558             break;
 559         case VLC_CODEC_U8:
 560             p_es->i_payload_type = p_media->i_payload_type++;
 561             if( asprintf( &p_es->psz_rtpmap, "L8/%d/%d", p_fmt->audio.i_rate,
 562                           p_fmt->audio.i_channels ) == -1 )
 563                 p_es->psz_rtpmap = NULL;
 564             break;
 565         case VLC_CODEC_MPGA:
 566             p_es->i_payload_type = 14;
 567             p_es->psz_rtpmap = strdup( "MPA/90000" );
 568             break;
 569         case VLC_CODEC_MPGV:
 570             p_es->i_payload_type = 32;
 571             p_es->psz_rtpmap = strdup( "MPV/90000" );
 572             break;
 573         case VLC_CODEC_A52:
 574             p_es->i_payload_type = p_media->i_payload_type++;
 575             if( asprintf( &p_es->psz_rtpmap, "ac3/%d", p_fmt->audio.i_rate ) == -1 )
 576                 p_es->psz_rtpmap = NULL;
 577             break;
 578         case VLC_CODEC_H263:
 579             p_es->i_payload_type = p_media->i_payload_type++;
 580             p_es->psz_rtpmap = strdup( "H263-1998/90000" );
 581             break;
 582         case VLC_CODEC_H264:
 583             p_es->i_payload_type = p_media->i_payload_type++;
 584             p_es->psz_rtpmap = strdup( "H264/90000" );
 585             p_es->psz_fmtp = NULL;
 586             /* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
 587             if( p_fmt->i_extra > 0 )
 588             {
 589                 uint8_t *p_buffer = p_fmt->p_extra;
 590                 int     i_buffer = p_fmt->i_extra;
 591                 char    *p_64_sps = NULL;
 592                 char    *p_64_pps = NULL;
 593                 char    hexa[6+1];
 594
 595                 while( i_buffer > 4 &&
 596                        p_buffer[0] == 0 && p_buffer[1] == 0 &&
 597                        p_buffer[2] == 0 && p_buffer[3] == 1 )
 598                 {
 599                     const int i_nal_type = p_buffer[4]&0x1f;
 600                     int i_offset;
 601                     int i_size      = 0;
 602
 603                     i_size = i_buffer;
 604                     for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
 605                     {
 606                         if( p_buffer[i_offset] == 0 && p_buffer[i_offset+1] == 0 && p_buffer[i_offset+2] == 0 && p_buffer[i_offset+3] == 1 )
 607                         {
 608                             /* we found another startcode */
 609                             i_size = i_offset;
 610                             break;
 611                         }
 612                     }
 613                     if( i_nal_type == 7 )
 614                     {
 615                         free( p_64_sps );
 616                         p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 617                         sprintf_hexa( hexa, &p_buffer[5], 3 );
 618                     }
 619                     else if( i_nal_type == 8 )
 620                     {
 621                         free( p_64_pps );
 622                         p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 623                     }
 624                     i_buffer -= i_size;
 625                     p_buffer += i_size;
 626                 }
 627                 /* */
 628                 if( p_64_sps && p_64_pps )
 629                 {
 630                     if( asprintf( &p_es->psz_fmtp,
 631                                   "packetization-mode=1;profile-level-id=%s;"
 632                                   "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
 633                                   p_64_pps ) < 0 )
 634                     {
 635                         free( p_64_sps );
 636                         free( p_64_pps );
 637                         free( psz_urlc );
 638                         free( p_es );
 639                         return VLC_ENOMEM;
 640                     }
 641                 }
 642                 free( p_64_sps );
 643                 free( p_64_pps );
 644             }
 645             if( !p_es->psz_fmtp )
 646                 p_es->psz_fmtp = strdup( "packetization-mode=1" );
 647             break;
 648         case VLC_CODEC_MP4V:
 649             p_es->i_payload_type = p_media->i_payload_type++;
 650             p_es->psz_rtpmap = strdup( "MP4V-ES/90000" );
 651             if( p_fmt->i_extra > 0 )
 652             {
 653                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 654                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 655                 if( asprintf( &p_es->psz_fmtp,
 656                               "profile-level-id=3; config=%s;", p_hexa ) == -1 )
 657                     p_es->psz_fmtp = NULL;
 658                 free( p_hexa );
 659             }
 660             break;
 661         case VLC_CODEC_MP4A:
 662             p_es->i_payload_type = p_media->i_payload_type++;
 663             if( asprintf( &p_es->psz_rtpmap, "mpeg4-generic/%d", p_fmt->audio.i_rate ) == -1 )
 664                 p_es->psz_rtpmap = NULL;
 665             if( p_fmt->i_extra > 0 )
 666             {
 667                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 668                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 669                 if( asprintf( &p_es->psz_fmtp,
 670                               "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
 671                               "config=%s; SizeLength=13;IndexLength=3; "
 672                               "IndexDeltaLength=3; Profile=1;", p_hexa ) == -1 )
 673                     p_es->psz_fmtp = NULL;
 674                 free( p_hexa );
 675             }
 676             break;
 677         case VLC_FOURCC( 'm', 'p', '2', 't' ):
 678             p_media->psz_mux = strdup("ts");
 679             p_es->i_payload_type = 33;
 680             p_es->psz_rtpmap = strdup( "MP2T/90000" );
 681             break;
 682         case VLC_FOURCC( 'm', 'p', '2', 'p' ):
 683             p_media->psz_mux = strdup("ps");
 684             p_es->i_payload_type = p_media->i_payload_type++;
 685             p_es->psz_rtpmap = strdup( "MP2P/90000" );
 686             break;
 687         case VLC_CODEC_AMR_NB:
 688             p_es->i_payload_type = p_media->i_payload_type++;
 689             p_es->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
 690                                     "AMR/8000/2" : "AMR/8000" );
 691             p_es->psz_fmtp = strdup( "octet-align=1" );
 692             break;
 693         case VLC_CODEC_AMR_WB:
 694             p_es->i_payload_type = p_media->i_payload_type++;
 695             p_es->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
 696                                     "AMR-WB/16000/2" : "AMR-WB/16000" );
 697             p_es->psz_fmtp = strdup( "octet-align=1" );
 698             break;
 699
 700         default:
 701             msg_Err( p_vod, "cannot add this stream (unsupported "
 702                     "codec: %4.4s)", (char*)&p_fmt->i_codec );
 703             free( psz_urlc );
 704             free( p_es );
 705             return VLC_EGENERIC;
 706     }
 707
 708     p_es->p_rtsp_url =
 709         httpd_UrlNewUnique( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL,
 710                             NULL );
 711
 712     if( !p_es->p_rtsp_url )
 713     {
 714         msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
 715         free( psz_urlc );
 716         free( p_es );
 717         return VLC_EGENERIC;
 718     }
 719     free( psz_urlc );
 720
 721     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
 722                     RtspCallbackES, (void*)p_es );
 723     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 724                     RtspCallbackES, (void*)p_es );
 725     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
 726                     RtspCallbackES, (void*)p_es );
 727     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
 728                     RtspCallbackES, (void*)p_es );
 729
 730     es_format_Copy( &p_es->fmt, p_fmt );
 731     p_es->p_vod = p_vod;
 732     p_es->p_media = p_media;
 733
 734 #if 0
 735     /* Choose the port */
 736     if( p_fmt->i_cat == AUDIO_ES && p_media->i_port_audio > 0 )
 737     {
 738         p_es->i_port = p_media->i_port_audio;
 739         p_media->i_port_audio = 0;
 740     }
 741     else if( p_fmt->i_cat == VIDEO_ES && p_media->i_port_video > 0 )
 742     {
 743         p_es->i_port = p_media->i_port_video;
 744         p_media->i_port_video = 0;
 745     }
 746     while( !p_es->i_port )
 747     {
 748         if( p_media->i_port != p_media->i_port_audio &&
 749             p_media->i_port != p_media->i_port_video )
 750         {
 751             p_es->i_port = p_media->i_port;
 752             p_media->i_port += 2;
 753             break;
 754         }
 755         p_media->i_port += 2;
 756     }
 757 #else
 758
 759     p_es->i_port = 0;
 760 #endif
 761
 762     vlc_mutex_lock( &p_media->lock );
 763     TAB_APPEND( p_media->i_es, p_media->es, p_es );
 764     vlc_mutex_unlock( &p_media->lock );
 765
 766     p_media->i_sdp_version++;
 767
 768     return VLC_SUCCESS;
 769 }
 770
 771 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
 772 {
 773     media_es_t *p_es = NULL;
 774     int i;
 775
 776     /* Find the ES */
 777     for( i = 0; i < p_media->i_es; i++ )
 778     {
 779         if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
 780             p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
 781             p_media->es[i]->fmt.i_id == p_fmt->i_id )
 782         {
 783             p_es = p_media->es[i];
 784         }
 785     }
 786     if( !p_es ) return;
 787
 788     msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );
 789
 790     vlc_mutex_lock( &p_media->lock );
 791     TAB_REMOVE( p_media->i_es, p_media->es, p_es );
 792     vlc_mutex_unlock( &p_media->lock );
 793
 794     free( p_es->psz_rtpmap );
 795     free( p_es->psz_fmtp );
 796     p_media->i_sdp_version++;
 797
 798     if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
 799     es_format_Clean( &p_es->fmt );
 800     free( p_es );
 801 }
 802
 803 static void CommandPush( vod_t *p_vod, rtsp_cmd_type_t i_type, vod_media_t *p_media, const char *psz_session,
 804                          double f_arg, const char *psz_arg )
 805 {
 806     rtsp_cmd_t cmd;
 807     block_t *p_cmd;
 808
 809     memset( &cmd, 0, sizeof(cmd) );
 810     cmd.i_type = i_type;
 811     if( p_media )
 812         cmd.i_media_id = p_media->id;
 813     if( psz_session )
 814         cmd.psz_session = strdup(psz_session);
 815     cmd.f_arg = f_arg;
 816     if( psz_arg )
 817         cmd.psz_arg = strdup(psz_arg);
 818
 819     p_cmd = block_New( p_vod, sizeof(rtsp_cmd_t) );
 820     memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
 821
 822     block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
 823 }
 824
 825 static void* CommandThread( vlc_object_t *p_this )
 826 {
 827     vod_t *p_vod = (vod_t*)p_this;
 828     vod_sys_t *p_sys = p_vod->p_sys;
 829     int canc = vlc_savecancel ();
 830
 831     while( vlc_object_alive (p_vod) )
 832     {
 833         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 834         rtsp_cmd_t cmd;
 835         vod_media_t *p_media = NULL;
 836         int i;
 837
 838         if( !p_block_cmd )
 839             break;
 840
 841         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 842         block_Release( p_block_cmd );
 843
 844         if( cmd.i_type == RTSP_CMD_TYPE_NONE )
 845             break;
 846
 847         /* */
 848         vlc_mutex_lock( &p_sys->lock_media );
 849         for( i = 0; i < p_sys->i_media; i++ )
 850         {
 851             if( p_sys->media[i]->id == cmd.i_media_id )
 852                 break;
 853         }
 854         if( i >= p_sys->i_media )
 855             goto next;
 856         p_media = p_sys->media[i];
 857
 858         switch( cmd.i_type )
 859         {
 860         case RTSP_CMD_TYPE_PLAY:
 861             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 862                               VOD_MEDIA_PLAY, cmd.psz_arg );
 863             break;
 864         case RTSP_CMD_TYPE_PAUSE:
 865             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 866                               VOD_MEDIA_PAUSE );
 867             break;
 868
 869         case RTSP_CMD_TYPE_STOP:
 870             vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
 871             break;
 872
 873         case RTSP_CMD_TYPE_SEEK:
 874             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 875                               VOD_MEDIA_SEEK, cmd.f_arg );
 876             break;
 877
 878         case RTSP_CMD_TYPE_REWIND:
 879             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 880                               VOD_MEDIA_REWIND, cmd.f_arg );
 881             break;
 882
 883         case RTSP_CMD_TYPE_FORWARD:
 884             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 885                               VOD_MEDIA_FORWARD, cmd.f_arg );
 886             break;
 887
 888         default:
 889             break;
 890         }
 891
 892     next:
 893         vlc_mutex_unlock( &p_sys->lock_media );
 894         free( cmd.psz_session );
 895         free( cmd.psz_arg );
 896     }
 897
 898     vlc_restorecancel (canc);
 899     return NULL;
 900 }
 901
 902 /****************************************************************************
 903  * RTSP server implementation
 904  ****************************************************************************/
 905 static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
 906 {
 907     rtsp_client_t *p_rtsp = calloc( 1, sizeof(rtsp_client_t) );
 908
 909     if( !p_rtsp )
 910         return NULL;
 911     p_rtsp->es = 0;
 912
 913     p_rtsp->psz_session = psz_session;
 914     TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 915
 916     p_media->p_vod->p_sys->i_connections++;
 917     msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
 918              psz_session, p_media->p_vod->p_sys->i_throttle_users );
 919
 920     return p_rtsp;
 921 }
 922
 923 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
 924 {
 925     int i;
 926
 927     for( i = 0; psz_session && i < p_media->i_rtsp; i++ )
 928     {
 929         if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
 930             return p_media->rtsp[i];
 931     }
 932
 933     return NULL;
 934 }
 935
 936 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
 937 {
 938     p_media->p_vod->p_sys->i_connections--;
 939     msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
 940              p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
 941
 942     while( p_rtsp->i_es )
 943     {
 944         p_rtsp->i_es--;
 945         free( p_rtsp->es[p_rtsp->i_es]->psz_ip );
 946         free( p_rtsp->es[p_rtsp->i_es] );
 947     }
 948     free( p_rtsp->es );
 949
 950     TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 951
 952     free( p_rtsp->psz_session );
 953     free( p_rtsp );
 954 }
 955
 956
 957 static float ParseNPT (const char *str)
 958 {
 959      locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
 960      locale_t oldloc = uselocale (loc);
 961      unsigned hour, min;
 962      float sec;
 963
 964      if (sscanf (str, "%u:%u:%f", &hour, &min, &sec) == 3)
 965          sec += ((hour * 60) + min) * 60;
 966      else
 967      if (sscanf (str, "%f", &sec) != 1)
 968          sec = 0.;
 969
 970      if (loc != (locale_t)0)
 971      {
 972          uselocale (oldloc);
 973          freelocale (loc);
 974      }
 975      return sec;
 976 }
 977
 978
 979 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
 980                          httpd_message_t *answer, const httpd_message_t *query )
 981 {
 982     vod_media_t *p_media = (vod_media_t*)p_args;
 983     vod_t *p_vod = p_media->p_vod;
 984     const char *psz_transport = NULL;
 985     const char *psz_playnow = NULL; /* support option: x-playNow */
 986     const char *psz_session = NULL;
 987     const char *psz_cseq = NULL;
 988     rtsp_client_t *p_rtsp;
 989     int i_port = 0;
 990     int i_cseq = 0;
 991
 992     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
 993
 994     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
 995
 996     answer->i_proto   = HTTPD_PROTO_RTSP;
 997     answer->i_version = query->i_version;
 998     answer->i_type    = HTTPD_MSG_ANSWER;
 999     answer->i_body    = 0;
1000     answer->p_body    = NULL;
1001
1002     switch( query->i_type )
1003     {
1004         case HTTPD_MSG_SETUP:
1005         {
1006             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1007             psz_transport = httpd_MsgGet( query, "Transport" );
1008             if( psz_transport == NULL )
1009             {
1010                 answer->i_status = 400;
1011                 break;
1012             }
1013             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1014
1015             if( strstr( psz_transport, "unicast" ) &&
1016                 strstr( psz_transport, "client_port=" ) )
1017             {
1018                 rtsp_client_t *p_rtsp = NULL;
1019                 char ip[NI_MAXNUMERICHOST];
1020                 i_port = atoi( strstr( psz_transport, "client_port=" ) +
1021                                 strlen("client_port=") );
1022
1023                 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
1024                     strstr( psz_transport, "RAW/RAW/UDP" ) )
1025                 {
1026                     free( p_media->psz_mux );
1027                     p_media->psz_mux = NULL;
1028                     p_media->psz_mux = strdup( p_vod->p_sys->psz_raw_mux );
1029                     p_media->b_raw = true;
1030                 }
1031
1032                 if( httpd_ClientIP( cl, ip ) == NULL )
1033                 {
1034                     answer->i_status = 500;
1035                     answer->i_body = 0;
1036                     answer->p_body = NULL;
1037                     break;
1038                 }
1039
1040                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1041                          ip, i_port );
1042
1043                 psz_session = httpd_MsgGet( query, "Session" );
1044                 if( !psz_session || !*psz_session )
1045                 {
1046                     char *psz_new;
1047                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1048                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1049                     {
1050                         answer->i_status = 503;
1051                         answer->i_body = 0;
1052                         answer->p_body = NULL;
1053                         break;
1054                     }
1055                     if( asprintf( &psz_new, "%d", rand() ) < 0 )
1056                         return VLC_ENOMEM;
1057                     psz_session = psz_new;
1058
1059                     p_rtsp = RtspClientNew( p_media, psz_new );
1060                     if( !p_rtsp )
1061                     {
1062                         answer->i_status = 454;
1063                         answer->i_body = 0;
1064                         answer->p_body = NULL;
1065                         break;
1066                     }
1067                 }
1068                 else
1069                 {
1070                     p_rtsp = RtspClientGet( p_media, psz_session );
1071                     if( !p_rtsp )
1072                     {
1073                         answer->i_status = 454;
1074                         answer->i_body = 0;
1075                         answer->p_body = NULL;
1076                         break;
1077                     }
1078                 }
1079
1080                 answer->i_status = 200;
1081                 answer->i_body = 0;
1082                 answer->p_body = NULL;
1083
1084                 if( p_media->b_raw )
1085                 {
1086                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1087                     {
1088                         httpd_MsgAdd( answer, "Transport",
1089                                       "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1090                                       i_port, i_port + 1 );
1091                     }
1092                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1093                     {
1094                         httpd_MsgAdd( answer, "Transport",
1095                                       "RAW/RAW/UDP;unicast;client_port=%d-%d",
1096                                       i_port, i_port + 1 );
1097                     }
1098                 }
1099                 else
1100                     httpd_MsgAdd( answer, "Transport",
1101                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1102                                   i_port, i_port + 1 );
1103             }
1104             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1105             {
1106                 answer->i_status = 461;
1107                 answer->i_body = 0;
1108                 answer->p_body = NULL;
1109             }
1110
1111             /* Intentional fall-through on x-playNow option in RTSP request */
1112             if( !psz_playnow )
1113                 break;
1114         }
1115
1116         case HTTPD_MSG_PLAY:
1117         {
1118             char *psz_output, ip[NI_MAXNUMERICHOST];
1119             int i, i_port_audio = 0, i_port_video = 0;
1120
1121             /* for now only multicast so easy */
1122             if( !psz_playnow )
1123             {
1124                 answer->i_status = 200;
1125                 answer->i_body = 0;
1126                 answer->p_body = NULL;
1127             }
1128
1129             if( !psz_session )
1130                 psz_session = httpd_MsgGet( query, "Session" );
1131             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1132
1133             p_rtsp = RtspClientGet( p_media, psz_session );
1134             if( !p_rtsp )
1135             {
1136                 answer->i_status = 500;
1137                 answer->i_body = 0;
1138                 answer->p_body = NULL;
1139                 break;
1140             }
1141
1142             if( p_rtsp->b_playing )
1143             {
1144                 const char *psz_position = httpd_MsgGet( query, "Range" );
1145                 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1146                 if( psz_position )
1147                     psz_position = strstr( psz_position, "npt=" );
1148                 if( psz_position && !psz_scale )
1149                 {
1150                     double f_pos = ParseNPT (psz_position + 4);
1151                     msg_Dbg( p_vod, "seeking request: %s", psz_position );
1152                     f_pos /= ((double)(p_media->i_length))/1000 /1000 / 100;
1153                     CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1154                                  psz_session, f_pos, NULL );
1155                     break;
1156                 }
1157                 if( psz_scale )
1158                 {
1159                     double f_scale = 0.0;
1160                     char *end;
1161
1162                     f_scale = us_strtod( psz_scale, &end );
1163                     if( end > psz_scale )
1164                     {
1165                         f_scale = (f_scale * 30.0);
1166                         if( psz_scale[0] == '-' ) /* rewind */
1167                         {
1168                             msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1169                             CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
1170                                          psz_session, f_scale, NULL );
1171                         }
1172                         else if(psz_scale[0] != '1' ) /* fast-forward */
1173                         {
1174                             msg_Dbg( p_vod, "fastforward request: %s",
1175                                      psz_scale );
1176                             CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
1177                                          psz_session, f_scale, NULL );
1178                         }
1179
1180                         if( p_rtsp->b_paused == true )
1181                         {
1182                             p_rtsp->b_paused = false;
1183                             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1184                                          psz_session, 0, NULL );
1185                         }
1186                     }
1187                     break;
1188                 }
1189             }
1190
1191             if( p_rtsp->b_playing && p_rtsp->b_paused )
1192             {
1193                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1194                              psz_session, 0, NULL );
1195                 p_rtsp->b_paused = false;
1196                 break;
1197             }
1198             else if( p_rtsp->b_playing ) break;
1199
1200             if( httpd_ClientIP( cl, ip ) == NULL ) break;
1201
1202             p_rtsp->b_playing = true;
1203
1204             /* FIXME for != 1 video and 1 audio */
1205             for( i = 0; i < p_rtsp->i_es; i++ )
1206             {
1207                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1208                     i_port_audio = p_rtsp->es[i]->i_port;
1209                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1210                     i_port_video = p_rtsp->es[i]->i_port;
1211             }
1212
1213             if( p_media->psz_mux )
1214             {
1215                 if( p_media->b_raw )
1216                 {
1217                     if( asprintf( &psz_output,
1218                               "std{access=udp,dst=%s:%i,mux=%s}",
1219                               ip, i_port, p_media->psz_mux ) < 0 )
1220                         return VLC_ENOMEM;
1221                 }
1222                 else
1223                 {
1224                     if( asprintf( &psz_output,
1225                               "rtp{dst=%s,port=%i,mux=%s}",
1226                               ip, i_port_video, p_media->psz_mux ) < 0 )
1227                         return VLC_ENOMEM;
1228                 }
1229             }
1230             else
1231             {
1232                 if( asprintf( &psz_output,
1233                               "rtp{dst=%s,port-video=%i,port-audio=%i}",
1234                               ip, i_port_video, i_port_audio ) < 0 )
1235                     return VLC_ENOMEM;
1236             }
1237
1238             CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1239                          0, psz_output );
1240             free( psz_output );
1241             break;
1242         }
1243
1244         case HTTPD_MSG_DESCRIBE:
1245         {
1246             char *psz_sdp =
1247                 SDPGenerate( p_media, cl );
1248
1249             if( psz_sdp != NULL )
1250             {
1251                 answer->i_status = 200;
1252                 httpd_MsgAdd( answer, "Content-type",  "%s",
1253                               "application/sdp" );
1254
1255                 answer->p_body = (uint8_t *)psz_sdp;
1256                 answer->i_body = strlen( psz_sdp );
1257             }
1258             else
1259             {
1260                 answer->i_status = 500;
1261                 answer->p_body = NULL;
1262                 answer->i_body = 0;
1263             }
1264             break;
1265         }
1266
1267         case HTTPD_MSG_PAUSE:
1268             psz_session = httpd_MsgGet( query, "Session" );
1269             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1270
1271             p_rtsp = RtspClientGet( p_media, psz_session );
1272             if( !p_rtsp ) break;
1273
1274             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1275                          0, NULL );
1276             p_rtsp->b_paused = true;
1277
1278             answer->i_status = 200;
1279             answer->i_body = 0;
1280             answer->p_body = NULL;
1281             break;
1282
1283         case HTTPD_MSG_TEARDOWN:
1284             /* for now only multicast so easy again */
1285             answer->i_status = 200;
1286             answer->i_body = 0;
1287             answer->p_body = NULL;
1288
1289             psz_session = httpd_MsgGet( query, "Session" );
1290             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1291
1292             p_rtsp = RtspClientGet( p_media, psz_session );
1293             if( !p_rtsp ) break;
1294
1295             CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1296                          0, NULL );
1297             RtspClientDel( p_media, p_rtsp );
1298             break;
1299
1300         case HTTPD_MSG_GETPARAMETER:
1301             answer->i_status = 200;
1302             answer->i_body = 0;
1303             answer->p_body = NULL;
1304             break;
1305
1306         default:
1307             return VLC_EGENERIC;
1308     }
1309
1310     httpd_MsgAdd( answer, "Server", "VLC Server" );
1311     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1312     psz_cseq = httpd_MsgGet( query, "Cseq" );
1313     psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1314     httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1315     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1316
1317     if( psz_session )
1318     {
1319          if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
1320              httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1321                p_media->p_vod->p_sys->i_session_timeout );
1322          else
1323               httpd_MsgAdd( answer, "Session", "%s", psz_session );
1324     }
1325
1326     return VLC_SUCCESS;
1327 }
1328
1329 static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1330                            httpd_message_t *answer,
1331                            const httpd_message_t *query )
1332 {
1333     media_es_t *p_es = (media_es_t*)p_args;
1334     vod_media_t *p_media = p_es->p_media;
1335     vod_t *p_vod = p_media->p_vod;
1336     rtsp_client_t *p_rtsp = NULL;
1337     const char *psz_transport = NULL;
1338     const char *psz_playnow = NULL; /* support option: x-playNow */
1339     const char *psz_session = NULL;
1340     const char *psz_position = NULL;
1341     const char *psz_cseq = NULL;
1342     int i_cseq = 0;
1343     int i;
1344
1345     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1346
1347     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1348
1349     answer->i_proto   = HTTPD_PROTO_RTSP;
1350     answer->i_version = query->i_version;
1351     answer->i_type    = HTTPD_MSG_ANSWER;
1352     answer->i_body    = 0;
1353     answer->p_body      = NULL;
1354
1355     switch( query->i_type )
1356     {
1357         case HTTPD_MSG_SETUP:
1358             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1359             psz_transport = httpd_MsgGet( query, "Transport" );
1360
1361             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1362
1363             if( strstr( psz_transport, "unicast" ) &&
1364                 strstr( psz_transport, "client_port=" ) )
1365             {
1366                 rtsp_client_t *p_rtsp = NULL;
1367                 rtsp_client_es_t *p_rtsp_es = NULL;
1368                 char ip[NI_MAXNUMERICHOST];
1369                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
1370                                    strlen("client_port=") );
1371
1372                 if( httpd_ClientIP( cl, ip ) == NULL )
1373                 {
1374                     answer->i_status = 500;
1375                     answer->i_body = 0;
1376                     answer->p_body = NULL;
1377                     break;
1378                 }
1379
1380                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1381                         ip, i_port );
1382
1383                 psz_session = httpd_MsgGet( query, "Session" );
1384                 if( !psz_session || !*psz_session )
1385                 {
1386                     char *psz_new;
1387                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1388                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1389                     {
1390                         answer->i_status = 503;
1391                         answer->i_body = 0;
1392                         answer->p_body = NULL;
1393                         break;
1394                     }
1395                     if( asprintf( &psz_new, "%d", rand() ) < 0 )
1396                         return VLC_ENOMEM;
1397                     psz_session = psz_new;
1398
1399                     p_rtsp = RtspClientNew( p_media, psz_new );
1400                 }
1401                 else
1402                 {
1403                     p_rtsp = RtspClientGet( p_media, psz_session );
1404                     if( !p_rtsp )
1405                     {
1406                         answer->i_status = 454;
1407                         answer->i_body = 0;
1408                         answer->p_body = NULL;
1409                         break;
1410                     }
1411                 }
1412
1413                 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1414                 if( !p_rtsp_es )
1415                 {
1416                     answer->i_status = 500;
1417                     answer->i_body = 0;
1418                     answer->p_body = NULL;
1419                     break;
1420                 }
1421                 p_rtsp_es->i_port = i_port;
1422                 p_rtsp_es->psz_ip = strdup( ip );
1423                 p_rtsp_es->p_media_es = p_es;
1424                 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1425
1426                 answer->i_status = 200;
1427                 answer->i_body = 0;
1428                 answer->p_body = NULL;
1429
1430                 if( p_media->b_raw )
1431                 {
1432                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1433                     {
1434                         httpd_MsgAdd( answer, "Transport",
1435                                      "MP2T/H2221/UDP;client_port=%d-%d",
1436                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1437                     }
1438                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1439                     {
1440                         httpd_MsgAdd( answer, "Transport",
1441                                      "RAW/RAW/UDP;client_port=%d-%d",
1442                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1443                     }
1444                 }
1445                 else
1446                 {
1447                     httpd_MsgAdd( answer, "Transport",
1448                                   "RTP/AVP/UDP;client_port=%d-%d",
1449                                   p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1450                 }
1451             }
1452             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1453             {
1454                 answer->i_status = 461;
1455                 answer->i_body = 0;
1456                 answer->p_body = NULL;
1457             }
1458
1459             /* Intentional fall-through on x-playNow option in RTSP request */
1460             if( !psz_playnow )
1461                 break;
1462
1463         case HTTPD_MSG_PLAY:
1464             /* This is kind of a kludge. Should we only support Aggregate
1465              * Operations ? */
1466             psz_session = httpd_MsgGet( query, "Session" );
1467             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1468
1469             p_rtsp = RtspClientGet( p_media, psz_session );
1470
1471             psz_position = httpd_MsgGet( query, "Range" );
1472             if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1473             if( psz_position )
1474             {
1475                 double f_pos = ParseNPT (psz_position + 4);
1476                 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1477                 f_pos /= ((double)(p_media->i_length))/1000 /1000 / 100;
1478                 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1479                              psz_session, f_pos, NULL );
1480             }
1481
1482             if( !psz_playnow )
1483             {
1484                 answer->i_status = 200;
1485                 answer->i_body = 0;
1486                 answer->p_body = NULL;
1487             }
1488             break;
1489
1490         case HTTPD_MSG_TEARDOWN:
1491             answer->i_status = 200;
1492             answer->i_body = 0;
1493             answer->p_body = NULL;
1494
1495             psz_session = httpd_MsgGet( query, "Session" );
1496             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1497
1498             p_rtsp = RtspClientGet( p_media, psz_session );
1499             if( !p_rtsp ) break;
1500
1501             for( i = 0; i < p_rtsp->i_es; i++ )
1502             {
1503                 if( p_rtsp->es[i]->p_media_es == p_es )
1504                 {
1505                     free( p_rtsp->es[i]->psz_ip );
1506                     TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, p_rtsp->es[i] );
1507                     break;
1508                 }
1509             }
1510
1511             if( !p_rtsp->i_es )
1512             {
1513                 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1514                              0, NULL );
1515                 RtspClientDel( p_media, p_rtsp );
1516             }
1517             break;
1518
1519         case HTTPD_MSG_PAUSE:
1520             /* This is kind of a kludge. Should we only support Aggregate
1521              * Operations ? */
1522             psz_session = httpd_MsgGet( query, "Session" );
1523             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1524
1525             p_rtsp = RtspClientGet( p_media, psz_session );
1526             if( !p_rtsp ) break;
1527
1528             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1529                          0, NULL );
1530             p_rtsp->b_paused = true;
1531
1532             answer->i_status = 200;
1533             answer->i_body = 0;
1534             answer->p_body = NULL;
1535             break;
1536
1537         default:
1538             return VLC_EGENERIC;
1539             break;
1540     }
1541
1542     httpd_MsgAdd( answer, "Server", "VLC Server" );
1543     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1544     psz_cseq = httpd_MsgGet( query, "Cseq" );
1545     if (psz_cseq)
1546         i_cseq = atoi( psz_cseq );
1547     else
1548         i_cseq = 0;
1549     httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1550     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1551
1552     if( psz_session )
1553         httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1554
1555     return VLC_SUCCESS;
1556 }
1557
1558 /*****************************************************************************
1559  * SDPGenerate: TODO
1560  * FIXME: need to be moved to a common place ?
1561  *****************************************************************************/
1562 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1563 {
1564     int i, i_size;
1565     char *p, *psz_sdp, ip[NI_MAXNUMERICHOST], ipv;
1566     const char *psz_control;
1567
1568     if( httpd_ServerIP( cl, ip ) == NULL )
1569         return NULL;
1570
1571     p = strchr( ip, '%' );
1572     if( p != NULL )
1573         *p = '\0'; /* remove scope if present */
1574
1575     ipv = ( strchr( ip, ':' ) != NULL ) ? '6' : '4';
1576
1577     /* Calculate size */
1578     i_size = sizeof( "v=0\r\n" ) +
1579         sizeof( "o=- * * IN IP4 \r\n" ) + 10 + NI_MAXNUMERICHOST +
1580         sizeof( "s=*\r\n" ) + strlen( p_media->psz_session_name ) +
1581         sizeof( "i=*\r\n" ) + strlen( p_media->psz_session_description ) +
1582         sizeof( "u=*\r\n" ) + strlen( p_media->psz_session_url ) +
1583         sizeof( "e=*\r\n" ) + strlen( p_media->psz_session_email ) +
1584         sizeof( "c=IN IP4 0.0.0.0\r\n" ) + 20 + 10 +
1585         sizeof( "t=0 0\r\n" ) + /* FIXME */
1586         sizeof( "a=tool:"PACKAGE_STRING"\r\n" ) +
1587         sizeof( "a=range:npt=0-1000000000.000\r\n" );
1588
1589     psz_control = (ipv == '6') ? p_media->psz_rtsp_control_v6
1590                                : p_media->psz_rtsp_control_v4;
1591     for( i = 0; i < p_media->i_es; i++ )
1592     {
1593         media_es_t *p_es = p_media->es[i];
1594
1595         i_size += sizeof( "m=**d*o * RTP/AVP *\r\n" ) + 19;
1596         if( p_es->psz_rtpmap )
1597         {
1598             i_size += sizeof( "a=rtpmap:* *\r\n" ) +
1599                 strlen( p_es->psz_rtpmap ) + 9;
1600         }
1601         if( p_es->psz_fmtp )
1602         {
1603             i_size += sizeof( "a=fmtp:* *\r\n" ) +
1604                 strlen( p_es->psz_fmtp ) + 9;
1605         }
1606     }
1607     i_size += (strlen( psz_control ) + strlen( ip ) + 9) * p_media->i_es;
1608
1609     p = psz_sdp = malloc( i_size );
1610     p += sprintf( p, "v=0\r\n" );
1611     p += sprintf( p, "o=- %"PRId64" %d IN IP%c %s\r\n",
1612                   p_media->i_sdp_id, p_media->i_sdp_version, ipv, ip );
1613     if( *p_media->psz_session_name )
1614         p += sprintf( p, "s=%s\r\n", p_media->psz_session_name );
1615     if( *p_media->psz_session_description )
1616         p += sprintf( p, "i=%s\r\n", p_media->psz_session_description );
1617     if( *p_media->psz_session_url )
1618         p += sprintf( p, "u=%s\r\n", p_media->psz_session_url );
1619     if( *p_media->psz_session_email )
1620         p += sprintf( p, "e=%s\r\n", p_media->psz_session_email );
1621
1622     p += sprintf( p, "c=IN IP%c %s\r\n", ipv, ipv == '6' ? "::" : "0.0.0.0" );
1623     p += sprintf( p, "t=0 0\r\n" ); /* FIXME */
1624     p += sprintf( p, "a=tool:"PACKAGE_STRING"\r\n" );
1625
1626     if( p_media->i_length > 0 )
1627     {
1628         lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
1629         p += sprintf( p, "a=range:npt=0-%lld.%03u\r\n", d.quot,
1630                       (unsigned)d.rem );
1631     }
1632
1633     for( i = 0; i < p_media->i_es; i++ )
1634     {
1635         media_es_t *p_es = p_media->es[i];
1636
1637         if( p_es->fmt.i_cat == AUDIO_ES )
1638         {
1639             p += sprintf( p, "m=audio %d RTP/AVP %d\r\n",
1640                           p_es->i_port, p_es->i_payload_type );
1641         }
1642         else if( p_es->fmt.i_cat == VIDEO_ES )
1643         {
1644             p += sprintf( p, "m=video %d RTP/AVP %d\r\n",
1645                           p_es->i_port, p_es->i_payload_type );
1646         }
1647         else
1648         {
1649             continue;
1650         }
1651
1652         if( p_es->psz_rtpmap )
1653         {
1654             p += sprintf( p, "a=rtpmap:%d %s\r\n", p_es->i_payload_type,
1655                           p_es->psz_rtpmap );
1656         }
1657         if( p_es->psz_fmtp )
1658         {
1659             p += sprintf( p, "a=fmtp:%d %s\r\n", p_es->i_payload_type,
1660                           p_es->psz_fmtp );
1661         }
1662
1663         p += sprintf( p, psz_control, ip, i );
1664     }
1665
1666     return psz_sdp;
1667 }