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 #include <vlc/vlc.h>
  30 #include <vlc_input.h>
  31 #include <vlc_sout.h>
  32 #include <vlc_block.h>
  33
  34 #include "vlc_httpd.h"
  35 #include "vlc_vod.h"
  36 #include "vlc_url.h"
  37 #include <vlc_network.h>
  38 #include <vlc_charset.h>
  39 #include <vlc_strings.h>
  40
  41 #include <errno.h>
  42
  43 /*****************************************************************************
  44  * Module descriptor
  45  *****************************************************************************/
  46 static int  Open ( vlc_object_t * );
  47 static void Close( vlc_object_t * );
  48
  49 #define HOST_TEXT N_( "RTSP host address" )
  50 #define HOST_LONGTEXT N_( \
  51     "This defines the address, port and path the RTSP VOD server will listen " \
  52     "on.\nSyntax is address:port/path. The default is to listen on all "\
  53     "interfaces (address 0.0.0.0), on port 554, with no path.\nTo listen " \
  54     "only on the local interface, use \"localhost\" as address." )
  55
  56 #define THROTLE_TEXT N_( "Maximum number of connections" )
  57 #define THROTLE_LONGTEXT N_( "This limits the maximum number of clients " \
  58     "that can connect to the RTSP VOD. 0 means no limit."  )
  59
  60 #define RAWMUX_TEXT N_( "MUX for RAW RTSP transport" )
  61
  62 #define SESSION_TIMEOUT_TEXT N_( "Sets the timeout option in the RTSP " \
  63     "session string" )
  64 #define SESSION_TIMEOUT_LONGTEXT N_( "Defines what timeout option to add " \
  65     "to the RTSP session ID string. Setting it to a negative number removes " \
  66     "the timeout option entirely. This is needed by some IPTV STBs (such as " \
  67     "those made by HansunTech) which get confused by it. The default is 5." )
  68
  69 vlc_module_begin();
  70     set_shortname( _("RTSP VoD" ) );
  71     set_description( _("RTSP VoD server") );
  72     set_category( CAT_SOUT );
  73     set_subcategory( SUBCAT_SOUT_VOD );
  74     set_capability( "vod server", 1 );
  75     set_callbacks( Open, Close );
  76     add_shortcut( "rtsp" );
  77     add_string ( "rtsp-host", NULL, NULL, HOST_TEXT, HOST_LONGTEXT, VLC_TRUE );
  78     add_string( "rtsp-raw-mux", "ts", NULL, RAWMUX_TEXT,
  79                 RAWMUX_TEXT, VLC_TRUE );
  80     add_integer( "rtsp-throttle-users", 0, NULL, THROTLE_TEXT,
  81                                            THROTLE_LONGTEXT, VLC_TRUE );
  82     add_integer( "rtsp-session-timeout", 5, NULL, SESSION_TIMEOUT_TEXT,
  83                  SESSION_TIMEOUT_LONGTEXT, VLC_TRUE );
  84 vlc_module_end();
  85
  86 /*****************************************************************************
  87  * Exported prototypes
  88  *****************************************************************************/
  89
  90 typedef struct media_es_t media_es_t;
  91
  92 typedef struct
  93 {
  94     media_es_t *p_media_es;
  95     char *psz_ip;
  96     int i_port;
  97
  98 } rtsp_client_es_t;
  99
 100 typedef struct
 101 {
 102     char *psz_session;
 103     int64_t i_last; /* for timeout */
 104
 105     vlc_bool_t b_playing; /* is it in "play" state */
 106     vlc_bool_t b_paused; /* is it in "pause" state */
 107
 108     int i_es;
 109     rtsp_client_es_t **es;
 110
 111 } rtsp_client_t;
 112
 113 struct media_es_t
 114 {
 115     /* VoD server */
 116     vod_t *p_vod;
 117
 118     /* RTSP server */
 119     httpd_url_t *p_rtsp_url;
 120
 121     vod_media_t *p_media;
 122
 123     es_format_t fmt;
 124     int         i_port;
 125     uint8_t     i_payload_type;
 126     char        *psz_rtpmap;
 127     char        *psz_fmtp;
 128
 129 };
 130
 131 struct vod_media_t
 132 {
 133     int id;
 134
 135     /* VoD server */
 136     vod_t *p_vod;
 137
 138     /* RTSP server */
 139     httpd_url_t  *p_rtsp_url;
 140     char         *psz_rtsp_control_v4;
 141     char         *psz_rtsp_control_v6;
 142     char         *psz_rtsp_path;
 143
 144     int  i_port;
 145     int  i_port_audio;
 146     int  i_port_video;
 147     int  i_ttl;
 148     int  i_payload_type;
 149
 150     int64_t i_sdp_id;
 151     int     i_sdp_version;
 152
 153     vlc_bool_t b_multicast;
 154
 155     vlc_mutex_t lock;
 156
 157     /* ES list */
 158     int        i_es;
 159     media_es_t **es;
 160     char       *psz_mux;
 161     vlc_bool_t  b_raw;
 162
 163     /* RTSP client */
 164     int           i_rtsp;
 165     rtsp_client_t **rtsp;
 166
 167     /* Infos */
 168     char *psz_session_name;
 169     char *psz_session_description;
 170     char *psz_session_url;
 171     char *psz_session_email;
 172     mtime_t i_length;
 173 };
 174
 175 struct vod_sys_t
 176 {
 177     /* RTSP server */
 178     httpd_host_t *p_rtsp_host;
 179     char *psz_path;
 180     int i_port;
 181     int i_throttle_users;
 182     int i_connections;
 183
 184     char *psz_raw_mux;
 185
 186     int i_session_timeout;
 187
 188     /* List of media */
 189     vlc_mutex_t lock_media;
 190     int i_media_id;
 191     int i_media;
 192     vod_media_t **media;
 193
 194     /* */
 195     block_fifo_t *p_fifo_cmd;
 196 };
 197
 198 /* rtsp delayed command (to avoid deadlock between vlm/httpd) */
 199 typedef enum
 200 {
 201     RTSP_CMD_TYPE_NONE,  /* Exit requested */
 202
 203     RTSP_CMD_TYPE_PLAY,
 204     RTSP_CMD_TYPE_PAUSE,
 205     RTSP_CMD_TYPE_STOP,
 206     RTSP_CMD_TYPE_SEEK,
 207     RTSP_CMD_TYPE_REWIND,
 208     RTSP_CMD_TYPE_FORWARD,
 209 } rtsp_cmd_type_t;
 210
 211 static vod_media_t *MediaNew( vod_t *, const char *, input_item_t * );
 212 static void         MediaDel( vod_t *, vod_media_t * );
 213 static int          MediaAddES( vod_t *, vod_media_t *, es_format_t * );
 214 static void         MediaDelES( vod_t *, vod_media_t *, es_format_t * );
 215
 216 static void CommandThread( vlc_object_t *p_this );
 217 static void CommandPush( vod_t *, rtsp_cmd_type_t, vod_media_t *, const char *psz_session,
 218                          double f_arg, const char *psz_arg );
 219
 220 static rtsp_client_t *RtspClientNew( vod_media_t *, char * );
 221 static rtsp_client_t *RtspClientGet( vod_media_t *, const char * );
 222 static void           RtspClientDel( vod_media_t *, rtsp_client_t * );
 223
 224 static int RtspCallback( httpd_callback_sys_t *, httpd_client_t *,
 225                          httpd_message_t *, const httpd_message_t * );
 226 static int RtspCallbackES( httpd_callback_sys_t *, httpd_client_t *,
 227                            httpd_message_t *, const httpd_message_t * );
 228
 229 static char *SDPGenerate( const vod_media_t *, httpd_client_t *cl );
 230
 231 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
 232 {
 233     static const char hex[16] = "0123456789abcdef";
 234     int i;
 235
 236     for( i = 0; i < i_data; i++ )
 237     {
 238         s[2*i+0] = hex[(p_data[i]>>4)&0xf];
 239         s[2*i+1] = hex[(p_data[i]   )&0xf];
 240     }
 241     s[2*i_data] = '\0';
 242 }
 243
 244 /*****************************************************************************
 245  * Open: Starts the RTSP server module
 246  *****************************************************************************/
 247 static int Open( vlc_object_t *p_this )
 248 {
 249     vod_t *p_vod = (vod_t *)p_this;
 250     vod_sys_t *p_sys = 0;
 251     char *psz_url = 0;
 252     vlc_url_t url;
 253
 254     psz_url = config_GetPsz( p_vod, "rtsp-host" );
 255     vlc_UrlParse( &url, psz_url, 0 );
 256     if( psz_url ) free( psz_url );
 257
 258     if( url.i_port <= 0 ) url.i_port = 554;
 259
 260     p_vod->p_sys = p_sys = malloc( sizeof( vod_sys_t ) );
 261     if( !p_sys ) goto error;
 262     p_sys->p_rtsp_host = 0;
 263
 264     p_sys->i_session_timeout = var_CreateGetInteger( p_this, "rtsp-session-timeout" );
 265
 266     p_sys->i_throttle_users = var_CreateGetInteger( p_this, "rtsp-throttle-users" );
 267     msg_Dbg( p_this, "allowing up to %d connections", p_sys->i_throttle_users );
 268     p_sys->i_connections = 0;
 269
 270     p_sys->psz_raw_mux = var_CreateGetString( p_this, "rtsp-raw-mux" );
 271
 272     p_sys->p_rtsp_host =
 273         httpd_HostNew( VLC_OBJECT(p_vod), url.psz_host, url.i_port );
 274     if( !p_sys->p_rtsp_host )
 275     {
 276         msg_Err( p_vod, "cannot create RTSP server (%s:%i)",
 277                  url.psz_host, url.i_port );
 278         goto error;
 279     }
 280
 281     p_sys->psz_path = strdup( url.psz_path ? url.psz_path : "/" );
 282     p_sys->i_port = url.i_port;
 283
 284     vlc_UrlClean( &url );
 285
 286     vlc_mutex_init( p_vod, &p_sys->lock_media );
 287
 288     TAB_INIT( p_sys->i_media, p_sys->media );
 289     p_sys->i_media_id = 0;
 290
 291     p_vod->pf_media_new = MediaNew;
 292     p_vod->pf_media_del = MediaDel;
 293     p_vod->pf_media_add_es = MediaAddES;
 294     p_vod->pf_media_del_es = MediaDelES;
 295
 296     p_sys->p_fifo_cmd = block_FifoNew( p_vod );
 297     if( vlc_thread_create( p_vod, "rtsp vod thread", CommandThread,
 298                            VLC_THREAD_PRIORITY_LOW, VLC_FALSE ) )
 299     {
 300         msg_Err( p_vod, "cannot spawn rtsp vod thread" );
 301         block_FifoRelease( p_sys->p_fifo_cmd );
 302         free( p_sys->psz_path );
 303         goto error;
 304     }
 305
 306     return VLC_SUCCESS;
 307
 308 error:
 309     if( p_sys && p_sys->p_rtsp_host ) httpd_HostDelete( p_sys->p_rtsp_host );
 310     if( p_sys && p_sys->psz_raw_mux ) free( p_sys->psz_raw_mux );
 311     if( p_sys ) free( p_sys );
 312     vlc_UrlClean( &url );
 313
 314     return VLC_EGENERIC;
 315 }
 316
 317 /*****************************************************************************
 318  * Close:
 319  *****************************************************************************/
 320 static void Close( vlc_object_t * p_this )
 321 {
 322     vod_t *p_vod = (vod_t *)p_this;
 323     vod_sys_t *p_sys = p_vod->p_sys;
 324
 325     /* Stop command thread */
 326     vlc_object_kill( p_vod );
 327     CommandPush( p_vod, RTSP_CMD_TYPE_NONE, NULL, NULL, 0.0, NULL );
 328     vlc_thread_join( p_vod );
 329
 330     block_FifoRelease( p_sys->p_fifo_cmd );
 331
 332     httpd_HostDelete( p_sys->p_rtsp_host );
 333     var_Destroy( p_this, "rtsp-session-timeout" );
 334     var_Destroy( p_this, "rtsp-throttle-users" );
 335     var_Destroy( p_this, "rtsp-raw-mux" );
 336
 337     /* Check VLM is not buggy */
 338     if( p_sys->i_media > 0 )
 339         msg_Err( p_vod, "rtsp vod leaking %d medias", p_sys->i_media );
 340     TAB_CLEAN( p_sys->i_media, p_sys->media );
 341
 342     vlc_mutex_destroy( &p_sys->lock_media );
 343
 344     free( p_sys->psz_path );
 345     free( p_sys->psz_raw_mux );
 346     free( p_sys );
 347 }
 348
 349 /*****************************************************************************
 350  * Media handling
 351  *****************************************************************************/
 352 static vod_media_t *MediaNew( vod_t *p_vod, const char *psz_name,
 353                               input_item_t *p_item )
 354 {
 355     vod_sys_t *p_sys = p_vod->p_sys;
 356     vod_media_t *p_media = malloc( sizeof(vod_media_t) );
 357     int i;
 358
 359     if( !p_media )
 360     {
 361         msg_Err( p_vod, "not enough memory" );
 362         return NULL;
 363     }
 364
 365     memset( p_media, 0, sizeof(vod_media_t) );
 366     p_media->id = p_sys->i_media_id++;
 367     TAB_INIT( p_media->i_es, p_media->es );
 368     p_media->psz_mux = 0;
 369     TAB_INIT( p_media->i_rtsp, p_media->rtsp );
 370     p_media->b_raw = VLC_FALSE;
 371
 372     if( asprintf( &p_media->psz_rtsp_path, "%s%s",
 373                   p_sys->psz_path, psz_name ) <0 )
 374         return NULL;
 375     p_media->p_rtsp_url =
 376         httpd_UrlNewUnique( p_sys->p_rtsp_host, p_media->psz_rtsp_path, NULL,
 377                             NULL, NULL );
 378
 379     if( !p_media->p_rtsp_url )
 380     {
 381         msg_Err( p_vod, "cannot create RTSP url (%s)", p_media->psz_rtsp_path);
 382         free( p_media->psz_rtsp_path );
 383         free( p_media );
 384         return NULL;
 385     }
 386
 387     msg_Dbg( p_vod, "created RTSP url: %s", p_media->psz_rtsp_path );
 388
 389     if( asprintf( &p_media->psz_rtsp_control_v4,
 390                "a=control:rtsp://%%s:%d%s/trackID=%%d\r\n",
 391                p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 392         return NULL;
 393     if( asprintf( &p_media->psz_rtsp_control_v6,
 394                "a=control:rtsp://[%%s]:%d%s/trackID=%%d\r\n",
 395               p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 396         return NULL;
 397
 398     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_SETUP,
 399                     RtspCallback, (void*)p_media );
 400     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_DESCRIBE,
 401                     RtspCallback, (void*)p_media );
 402     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PLAY,
 403                     RtspCallback, (void*)p_media );
 404     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PAUSE,
 405                     RtspCallback, (void*)p_media );
 406     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_GETPARAMETER,
 407                     RtspCallback, (void*)p_media );
 408     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 409                     RtspCallback, (void*)p_media );
 410
 411     p_media->p_vod = p_vod;
 412
 413     vlc_mutex_lock( &p_sys->lock_media );
 414     TAB_APPEND( p_sys->i_media, p_sys->media, p_media );
 415     vlc_mutex_unlock( &p_sys->lock_media );
 416
 417     vlc_mutex_init( p_vod, &p_media->lock );
 418     p_media->psz_session_name = strdup("");
 419     p_media->psz_session_description = strdup("");
 420     p_media->psz_session_url = strdup("");
 421     p_media->psz_session_email = strdup("");
 422
 423     p_media->i_port_audio = 1234;
 424     p_media->i_port_video = 1236;
 425     p_media->i_port       = 1238;
 426     p_media->i_payload_type = 96;
 427
 428     p_media->i_sdp_id = mdate();
 429     p_media->i_sdp_version = 1;
 430     p_media->i_length = input_item_GetDuration( p_item );
 431
 432     vlc_mutex_lock( &p_item->lock );
 433     msg_Dbg( p_vod, "media has %i declared ES", p_item->i_es );
 434     for( i = 0; i < p_item->i_es; i++ )
 435     {
 436         MediaAddES( p_vod, p_media, p_item->es[i] );
 437     }
 438     vlc_mutex_unlock( &p_item->lock );
 439
 440     return p_media;
 441 }
 442
 443 static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
 444 {
 445     vod_sys_t *p_sys = p_vod->p_sys;
 446
 447     msg_Dbg( p_vod, "deleting media: %s", p_media->psz_rtsp_path );
 448
 449     vlc_mutex_lock( &p_sys->lock_media );
 450     TAB_REMOVE( p_sys->i_media, p_sys->media, p_media );
 451     vlc_mutex_unlock( &p_sys->lock_media );
 452
 453     while( p_media->i_rtsp > 0 )
 454         RtspClientDel( p_media, p_media->rtsp[0] );
 455     TAB_CLEAN( p_media->i_rtsp, p_media->rtsp );
 456
 457     httpd_UrlDelete( p_media->p_rtsp_url );
 458     if( p_media->psz_rtsp_path ) free( p_media->psz_rtsp_path );
 459     if( p_media->psz_rtsp_control_v6 ) free( p_media->psz_rtsp_control_v6 );
 460     if( p_media->psz_rtsp_control_v4 ) free( p_media->psz_rtsp_control_v4 );
 461
 462     while( p_media->i_es )
 463         MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );
 464     TAB_CLEAN( p_media->i_es, p_media->es );
 465
 466     vlc_mutex_destroy( &p_media->lock );
 467
 468     if( p_media->psz_session_name ) free( p_media->psz_session_name );
 469     if( p_media->psz_session_description )
 470         free( p_media->psz_session_description );
 471     if( p_media->psz_session_url ) free( p_media->psz_session_url );
 472     if( p_media->psz_session_email ) free( p_media->psz_session_email );
 473     if( p_media->psz_mux ) free( p_media->psz_mux );
 474     free( p_media );
 475 }
 476
 477 static int MediaAddES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt )
 478 {
 479     media_es_t *p_es = malloc( sizeof(media_es_t) );
 480     char *psz_urlc;
 481
 482     if( !p_es ) return VLC_ENOMEM;
 483     memset( p_es, 0, sizeof(media_es_t) );
 484
 485     if( p_media->psz_mux ) free( p_media->psz_mux );
 486     p_media->psz_mux = NULL;
 487
 488     /* TODO: update SDP, etc... */
 489     if( asprintf( &psz_urlc, "%s/trackID=%d",
 490               p_media->psz_rtsp_path, p_media->i_es ) < 0 )
 491         return VLC_ENOMEM;
 492     msg_Dbg( p_vod, "  - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
 493
 494     switch( p_fmt->i_codec )
 495     {
 496         case VLC_FOURCC( 's', '1', '6', 'b' ):
 497             if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
 498             {
 499                 p_es->i_payload_type = 11;
 500             }
 501             else if( p_fmt->audio.i_channels == 2 &&
 502                      p_fmt->audio.i_rate == 44100 )
 503             {
 504                 p_es->i_payload_type = 10;
 505             }
 506             else
 507             {
 508                 p_es->i_payload_type = p_media->i_payload_type++;
 509             }
 510             p_es->psz_rtpmap = malloc( strlen( "L16/*/*" ) + 20+1 );
 511             sprintf( p_es->psz_rtpmap, "L16/%d/%d", p_fmt->audio.i_rate,
 512                     p_fmt->audio.i_channels );
 513             break;
 514         case VLC_FOURCC( 'u', '8', ' ', ' ' ):
 515             p_es->i_payload_type = p_media->i_payload_type++;
 516             p_es->psz_rtpmap = malloc( strlen( "L8/*/*" ) + 20+1 );
 517             sprintf( p_es->psz_rtpmap, "L8/%d/%d", p_fmt->audio.i_rate,
 518                     p_fmt->audio.i_channels );
 519             break;
 520         case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
 521             p_es->i_payload_type = 14;
 522             p_es->psz_rtpmap = strdup( "MPA/90000" );
 523             break;
 524         case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
 525             p_es->i_payload_type = 32;
 526             p_es->psz_rtpmap = strdup( "MPV/90000" );
 527             break;
 528         case VLC_FOURCC( 'a', '5', '2', ' ' ):
 529             p_es->i_payload_type = p_media->i_payload_type++;
 530             p_es->psz_rtpmap = strdup( "ac3/90000" );
 531             break;
 532         case VLC_FOURCC( 'H', '2', '6', '3' ):
 533             p_es->i_payload_type = p_media->i_payload_type++;
 534             p_es->psz_rtpmap = strdup( "H263-1998/90000" );
 535             break;
 536         case VLC_FOURCC( 'h', '2', '6', '4' ):
 537             p_es->i_payload_type = p_media->i_payload_type++;
 538             p_es->psz_rtpmap = strdup( "H264/90000" );
 539             p_es->psz_fmtp = NULL;
 540             /* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
 541             if( p_fmt->i_extra > 0 )
 542             {
 543                 uint8_t *p_buffer = p_fmt->p_extra;
 544                 int     i_buffer = p_fmt->i_extra;
 545                 char    *p_64_sps = NULL;
 546                 char    *p_64_pps = NULL;
 547                 char    hexa[6+1];
 548
 549                 while( i_buffer > 4 &&
 550                        p_buffer[0] == 0 && p_buffer[1] == 0 &&
 551                        p_buffer[2] == 0 && p_buffer[3] == 1 )
 552                 {
 553                     const int i_nal_type = p_buffer[4]&0x1f;
 554                     int i_offset;
 555                     int i_size      = 0;
 556
 557                     i_size = i_buffer;
 558                     for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
 559                     {
 560                         if( p_buffer[i_offset] == 0 && p_buffer[i_offset+1] == 0 && p_buffer[i_offset+2] == 0 && p_buffer[i_offset+3] == 1 )
 561                         {
 562                             /* we found another startcode */
 563                             i_size = i_offset;
 564                             break;
 565                         }
 566                     }
 567                     if( i_nal_type == 7 )
 568                     {
 569                         p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 570                         sprintf_hexa( hexa, &p_buffer[5], 3 );
 571                     }
 572                     else if( i_nal_type == 8 )
 573                     {
 574                         p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 575                     }
 576                     i_buffer -= i_size;
 577                     p_buffer += i_size;
 578                 }
 579                 /* */
 580                 if( p_64_sps && p_64_pps )
 581                     if( asprintf( &p_es->psz_fmtp,
 582                                   "packetization-mode=1;profile-level-id=%s;"
 583                                   "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
 584                                   p_64_pps ) < 0 )
 585                         return VLC_ENOMEM;
 586                 if( p_64_sps )
 587                     free( p_64_sps );
 588                 if( p_64_pps )
 589                     free( p_64_pps );
 590             }
 591             if( !p_es->psz_fmtp )
 592                 p_es->psz_fmtp = strdup( "packetization-mode=1" );
 593             break;
 594         case VLC_FOURCC( 'm', 'p', '4', 'v' ):
 595             p_es->i_payload_type = p_media->i_payload_type++;
 596             p_es->psz_rtpmap = strdup( "MP4V-ES/90000" );
 597             if( p_fmt->i_extra > 0 )
 598             {
 599                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 600                 p_es->psz_fmtp = malloc( 100 + 2 * p_fmt->i_extra );
 601                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 602                 sprintf( p_es->psz_fmtp,
 603                         "profile-level-id=3; config=%s;", p_hexa );
 604                 free( p_hexa );
 605             }
 606             break;
 607         case VLC_FOURCC( 'm', 'p', '4', 'a' ):
 608             p_es->i_payload_type = p_media->i_payload_type++;
 609             p_es->psz_rtpmap = malloc( strlen( "mpeg4-generic/" ) + 12 );
 610             sprintf( p_es->psz_rtpmap, "mpeg4-generic/%d", p_fmt->audio.i_rate );
 611             if( p_fmt->i_extra > 0 )
 612             {
 613                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 614                 p_es->psz_fmtp = malloc( 200 + 2 * p_fmt->i_extra );
 615                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 616                 sprintf( p_es->psz_fmtp,
 617                         "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
 618                         "config=%s; SizeLength=13;IndexLength=3; "
 619                         "IndexDeltaLength=3; Profile=1;", p_hexa );
 620                 free( p_hexa );
 621             }
 622             break;
 623         case VLC_FOURCC( 'm', 'p', '2', 't' ):
 624             p_media->psz_mux = strdup("ts");
 625             p_es->i_payload_type = 33;
 626             p_es->psz_rtpmap = strdup( "MP2T/90000" );
 627             break;
 628         case VLC_FOURCC( 'm', 'p', '2', 'p' ):
 629             p_media->psz_mux = strdup("ps");
 630             p_es->i_payload_type = p_media->i_payload_type++;
 631             p_es->psz_rtpmap = strdup( "MP2P/90000" );
 632             break;
 633         case VLC_FOURCC( 's', 'a', 'm', 'r' ):
 634             p_es->i_payload_type = p_media->i_payload_type++;
 635             p_es->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
 636                                     "AMR/8000/2" : "AMR/8000" );
 637             p_es->psz_fmtp = strdup( "octet-align=1" );
 638             break;
 639         case VLC_FOURCC( 's', 'a', 'w', 'b' ):
 640             p_es->i_payload_type = p_media->i_payload_type++;
 641             p_es->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
 642                                     "AMR-WB/16000/2" : "AMR-WB/16000" );
 643             p_es->psz_fmtp = strdup( "octet-align=1" );
 644             break;
 645
 646         default:
 647             msg_Err( p_vod, "cannot add this stream (unsupported "
 648                     "codec: %4.4s)", (char*)&p_fmt->i_codec );
 649             free( p_es );
 650             return VLC_EGENERIC;
 651     }
 652
 653     p_es->p_rtsp_url =
 654         httpd_UrlNewUnique( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL,
 655                             NULL );
 656
 657     if( !p_es->p_rtsp_url )
 658     {
 659         msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
 660         free( psz_urlc );
 661         free( p_es );
 662         return VLC_EGENERIC;
 663     }
 664     free( psz_urlc );
 665
 666     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
 667                     RtspCallbackES, (void*)p_es );
 668     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 669                     RtspCallbackES, (void*)p_es );
 670     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
 671                     RtspCallbackES, (void*)p_es );
 672     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
 673                     RtspCallbackES, (void*)p_es );
 674
 675     es_format_Copy( &p_es->fmt, p_fmt );
 676     p_es->p_vod = p_vod;
 677     p_es->p_media = p_media;
 678
 679 #if 0
 680     /* Choose the port */
 681     if( p_fmt->i_cat == AUDIO_ES && p_media->i_port_audio > 0 )
 682     {
 683         p_es->i_port = p_media->i_port_audio;
 684         p_media->i_port_audio = 0;
 685     }
 686     else if( p_fmt->i_cat == VIDEO_ES && p_media->i_port_video > 0 )
 687     {
 688         p_es->i_port = p_media->i_port_video;
 689         p_media->i_port_video = 0;
 690     }
 691     while( !p_es->i_port )
 692     {
 693         if( p_media->i_port != p_media->i_port_audio &&
 694             p_media->i_port != p_media->i_port_video )
 695         {
 696             p_es->i_port = p_media->i_port;
 697             p_media->i_port += 2;
 698             break;
 699         }
 700         p_media->i_port += 2;
 701     }
 702 #else
 703
 704     p_es->i_port = 0;
 705 #endif
 706
 707     vlc_mutex_lock( &p_media->lock );
 708     TAB_APPEND( p_media->i_es, p_media->es, p_es );
 709     vlc_mutex_unlock( &p_media->lock );
 710
 711     p_media->i_sdp_version++;
 712
 713     return VLC_SUCCESS;
 714 }
 715
 716 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
 717 {
 718     media_es_t *p_es = NULL;
 719     int i;
 720
 721     /* Find the ES */
 722     for( i = 0; i < p_media->i_es; i++ )
 723     {
 724         if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
 725             p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
 726             p_media->es[i]->fmt.i_id == p_fmt->i_id )
 727         {
 728             p_es = p_media->es[i];
 729         }
 730     }
 731     if( !p_es ) return;
 732
 733     msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );
 734
 735     vlc_mutex_lock( &p_media->lock );
 736     TAB_REMOVE( p_media->i_es, p_media->es, p_es );
 737     vlc_mutex_unlock( &p_media->lock );
 738
 739     if( p_es->psz_rtpmap ) free( p_es->psz_rtpmap );
 740     if( p_es->psz_fmtp ) free( p_es->psz_fmtp );
 741     p_media->i_sdp_version++;
 742
 743     if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
 744     es_format_Clean( &p_es->fmt );
 745     free( p_es );
 746 }
 747
 748 /* */
 749 typedef struct
 750 {
 751     int i_type;
 752     int i_media_id;
 753     //vod_media_t *p_media;
 754     char *psz_session;
 755     char *psz_arg;
 756     double f_arg;
 757 } rtsp_cmd_t;
 758
 759 static void CommandPush( vod_t *p_vod, rtsp_cmd_type_t i_type, vod_media_t *p_media, const char *psz_session,
 760                          double f_arg, const char *psz_arg )
 761 {
 762     rtsp_cmd_t cmd;
 763     block_t *p_cmd;
 764
 765     memset( &cmd, 0, sizeof(cmd) );
 766     cmd.i_type = i_type;
 767     if( p_media )
 768         cmd.i_media_id = p_media->id;
 769     if( psz_session )
 770         cmd.psz_session = strdup(psz_session);
 771     cmd.f_arg = f_arg;
 772     if( psz_arg )
 773         cmd.psz_arg = strdup(psz_arg);
 774
 775     p_cmd = block_New( p_vod, sizeof(rtsp_cmd_t) );
 776     memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
 777
 778     block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
 779 }
 780
 781 static void CommandThread( vlc_object_t *p_this )
 782 {
 783     vod_t *p_vod = (vod_t*)p_this;
 784     vod_sys_t *p_sys = p_vod->p_sys;
 785
 786     while( !p_vod->b_die )
 787     {
 788         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 789         rtsp_cmd_t cmd;
 790         vod_media_t *p_media = NULL;
 791         int i;
 792
 793         if( !p_block_cmd )
 794             break;
 795
 796         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 797         block_Release( p_block_cmd );
 798
 799         if( cmd.i_type == RTSP_CMD_TYPE_NONE )
 800             break;
 801
 802         /* */
 803         vlc_mutex_lock( &p_sys->lock_media );
 804         for( i = 0; i < p_sys->i_media; i++ )
 805         {
 806             if( p_sys->media[i]->id == cmd.i_media_id )
 807                 break;
 808         }
 809         if( i >= p_sys->i_media )
 810             goto next;
 811         p_media = p_sys->media[i];
 812
 813         switch( cmd.i_type )
 814         {
 815         case RTSP_CMD_TYPE_PLAY:
 816             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 817                               VOD_MEDIA_PLAY, cmd.psz_arg );
 818             break;
 819         case RTSP_CMD_TYPE_PAUSE:
 820             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 821                               VOD_MEDIA_PAUSE );
 822             break;
 823
 824         case RTSP_CMD_TYPE_STOP:
 825             vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
 826             break;
 827
 828         case RTSP_CMD_TYPE_SEEK:
 829             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 830                               VOD_MEDIA_SEEK, cmd.f_arg );
 831             break;
 832
 833         case RTSP_CMD_TYPE_REWIND:
 834             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 835                               VOD_MEDIA_REWIND, cmd.f_arg );
 836             break;
 837
 838         case RTSP_CMD_TYPE_FORWARD:
 839             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 840                               VOD_MEDIA_FORWARD, cmd.f_arg );
 841             break;
 842
 843         default:
 844             break;
 845         }
 846
 847     next:
 848         vlc_mutex_unlock( &p_sys->lock_media );
 849         if( cmd.psz_session )
 850             free( cmd.psz_session );
 851         if( cmd.psz_arg )
 852             free( cmd.psz_arg );
 853     }
 854 }
 855
 856 /****************************************************************************
 857  * RTSP server implementation
 858  ****************************************************************************/
 859 static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
 860 {
 861     rtsp_client_t *p_rtsp = malloc( sizeof(rtsp_client_t) );
 862
 863     if( !p_rtsp ) return NULL;
 864     memset( p_rtsp, 0, sizeof(rtsp_client_t) );
 865     p_rtsp->es = 0;
 866
 867     p_rtsp->psz_session = psz_session;
 868     TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 869
 870     p_media->p_vod->p_sys->i_connections++;
 871     msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
 872              psz_session, p_media->p_vod->p_sys->i_throttle_users );
 873
 874     return p_rtsp;
 875 }
 876
 877 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
 878 {
 879     int i;
 880
 881     for( i = 0; psz_session && i < p_media->i_rtsp; i++ )
 882     {
 883         if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
 884             return p_media->rtsp[i];
 885     }
 886
 887     return NULL;
 888 }
 889
 890 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
 891 {
 892     p_media->p_vod->p_sys->i_connections--;
 893     msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
 894              p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
 895
 896     while( p_rtsp->i_es-- )
 897     {
 898         if( p_rtsp->es[p_rtsp->i_es]->psz_ip )
 899             free( p_rtsp->es[p_rtsp->i_es]->psz_ip );
 900         free( p_rtsp->es[p_rtsp->i_es] );
 901         if( !p_rtsp->i_es ) free( p_rtsp->es );
 902     }
 903
 904     TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 905
 906     free( p_rtsp->psz_session );
 907     free( p_rtsp );
 908 }
 909
 910 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
 911                          httpd_message_t *answer, const httpd_message_t *query )
 912 {
 913     vod_media_t *p_media = (vod_media_t*)p_args;
 914     vod_t *p_vod = p_media->p_vod;
 915     const char *psz_transport = NULL;
 916     const char *psz_playnow = NULL; /* support option: x-playNow */
 917     const char *psz_session = NULL;
 918     const char *psz_cseq = NULL;
 919     rtsp_client_t *p_rtsp;
 920     int i_port = 0;
 921     int i_cseq = 0;
 922
 923     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
 924
 925     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
 926
 927     answer->i_proto   = HTTPD_PROTO_RTSP;
 928     answer->i_version = query->i_version;
 929     answer->i_type    = HTTPD_MSG_ANSWER;
 930     answer->i_body    = 0;
 931     answer->p_body    = NULL;
 932
 933     switch( query->i_type )
 934     {
 935         case HTTPD_MSG_SETUP:
 936         {
 937             psz_playnow = httpd_MsgGet( query, "x-playNow" );
 938             psz_transport = httpd_MsgGet( query, "Transport" );
 939             if( psz_transport == NULL )
 940             {
 941                 answer->i_status = 400;
 942                 break;
 943             }
 944             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
 945
 946             if( strstr( psz_transport, "unicast" ) &&
 947                 strstr( psz_transport, "client_port=" ) )
 948             {
 949                 rtsp_client_t *p_rtsp = NULL;
 950                 char ip[NI_MAXNUMERICHOST];
 951                 i_port = atoi( strstr( psz_transport, "client_port=" ) +
 952                                 strlen("client_port=") );
 953
 954                 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
 955                     strstr( psz_transport, "RAW/RAW/UDP" ) )
 956                 {
 957                     if( p_media->psz_mux ) free( p_media->psz_mux );
 958                     p_media->psz_mux = NULL;
 959                     p_media->psz_mux = strdup( p_vod->p_sys->psz_raw_mux );
 960                     p_media->b_raw = VLC_TRUE;
 961                 }
 962
 963                 if( httpd_ClientIP( cl, ip ) == NULL )
 964                 {
 965                     answer->i_status = 500;
 966                     answer->i_body = 0;
 967                     answer->p_body = NULL;
 968                     break;
 969                 }
 970
 971                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
 972                          ip, i_port );
 973
 974                 psz_session = httpd_MsgGet( query, "Session" );
 975                 if( !psz_session || !*psz_session )
 976                 {
 977                     char *psz_new;
 978                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
 979                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
 980                     {
 981                         answer->i_status = 503;
 982                         answer->i_body = 0;
 983                         answer->p_body = NULL;
 984                         break;
 985                     }
 986                     if( asprintf( &psz_new, "%d", rand() ) < 0 )
 987                         return VLC_ENOMEM;
 988                     psz_session = psz_new;
 989
 990                     p_rtsp = RtspClientNew( p_media, psz_new );
 991                     if( !p_rtsp )
 992                     {
 993                         answer->i_status = 454;
 994                         answer->i_body = 0;
 995                         answer->p_body = NULL;
 996                         break;
 997                     }
 998                 }
 999                 else
1000                 {
1001                     p_rtsp = RtspClientGet( p_media, psz_session );
1002                     if( !p_rtsp )
1003                     {
1004                         answer->i_status = 454;
1005                         answer->i_body = 0;
1006                         answer->p_body = NULL;
1007                         break;
1008                     }
1009                 }
1010
1011                 answer->i_status = 200;
1012                 answer->i_body = 0;
1013                 answer->p_body = NULL;
1014
1015                 if( p_media->b_raw )
1016                 {
1017                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1018                     {
1019                         httpd_MsgAdd( answer, "Transport",
1020                                       "MP2T/H2221/UDP;client_port=%d-%d",
1021                                       i_port, i_port + 1 );
1022                     }
1023                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1024                     {
1025                         httpd_MsgAdd( answer, "Transport",
1026                                       "RAW/RAW/UDP;client_port=%d-%d",
1027                                       i_port, i_port + 1 );
1028                     }
1029                 }
1030                 else
1031                     httpd_MsgAdd( answer, "Transport",
1032                                   "RTP/AVP/UDP;client_port=%d-%d",
1033                                   i_port, i_port + 1 );
1034             }
1035             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1036             {
1037                 answer->i_status = 461;
1038                 answer->i_body = 0;
1039                 answer->p_body = NULL;
1040             }
1041
1042             /* Intentional fall-through on x-playNow option in RTSP request */
1043             if( !psz_playnow )
1044                 break;
1045         }
1046
1047         case HTTPD_MSG_PLAY:
1048         {
1049             char *psz_output, ip[NI_MAXNUMERICHOST];
1050             int i, i_port_audio = 0, i_port_video = 0;
1051
1052             /* for now only multicast so easy */
1053             if( !psz_playnow )
1054             {
1055                 answer->i_status = 200;
1056                 answer->i_body = 0;
1057                 answer->p_body = NULL;
1058             }
1059
1060             if( !psz_session )
1061                 psz_session = httpd_MsgGet( query, "Session" );
1062             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1063
1064             p_rtsp = RtspClientGet( p_media, psz_session );
1065             if( !p_rtsp )
1066             {
1067                 answer->i_status = 500;
1068                 answer->i_body = 0;
1069                 answer->p_body = NULL;
1070                 break;
1071             }
1072
1073             if( p_rtsp->b_playing )
1074             {
1075                 const char *psz_position = httpd_MsgGet( query, "Range" );
1076                 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1077                 if( psz_position )
1078                     psz_position = strstr( psz_position, "npt=" );
1079                 if( psz_position && !psz_scale )
1080                 {
1081                     double f_pos;
1082                     char *end;
1083
1084                     msg_Dbg( p_vod, "seeking request: %s", psz_position );
1085                     psz_position += 4;
1086                     /* FIXME: npt= is not necessarily formatted as a float */
1087                     f_pos = us_strtod( psz_position, &end );
1088                     if( end > psz_position )
1089                     {
1090                         f_pos /= ((double)(p_media->i_length))/1000 /1000 / 100;
1091                         CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1092                                      psz_session, f_pos, NULL );
1093                     }
1094                     break;
1095                 }
1096                 if( psz_scale )
1097                 {
1098                     double f_scale = 0.0;
1099                     char *end;
1100
1101                     f_scale = us_strtod( psz_scale, &end );
1102                     if( end > psz_scale )
1103                     {
1104                         f_scale = (f_scale * 30.0);
1105                         if( psz_scale[0] == '-' ) /* rewind */
1106                         {
1107                             msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1108                             CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
1109                                          psz_session, f_scale, NULL );
1110                         }
1111                         else if(psz_scale[0] != '1' ) /* fast-forward */
1112                         {
1113                             msg_Dbg( p_vod, "fastforward request: %s",
1114                                      psz_scale );
1115                             CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
1116                                          psz_session, f_scale, NULL );
1117                         }
1118
1119                         if( p_rtsp->b_paused == VLC_TRUE )
1120                         {
1121                             p_rtsp->b_paused = VLC_FALSE;
1122                             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1123                                          psz_session, 0, NULL );
1124                         }
1125                     }
1126                     break;
1127                 }
1128             }
1129
1130             if( p_rtsp->b_playing && p_rtsp->b_paused )
1131             {
1132                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1133                              psz_session, 0, NULL );
1134                 p_rtsp->b_paused = VLC_FALSE;
1135                 break;
1136             }
1137             else if( p_rtsp->b_playing ) break;
1138
1139             if( httpd_ClientIP( cl, ip ) == NULL ) break;
1140
1141             p_rtsp->b_playing = VLC_TRUE;
1142
1143             /* FIXME for != 1 video and 1 audio */
1144             for( i = 0; i < p_rtsp->i_es; i++ )
1145             {
1146                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1147                     i_port_audio = p_rtsp->es[i]->i_port;
1148                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1149                     i_port_video = p_rtsp->es[i]->i_port;
1150             }
1151
1152             if( p_media->psz_mux )
1153             {
1154                 if( p_media->b_raw )
1155                 {
1156                     if( asprintf( &psz_output,
1157                               "std{access=udp,dst=%s:%i,mux=%s}",
1158                               ip, i_port, p_media->psz_mux ) < 0 )
1159                         return VLC_ENOMEM;
1160                 }
1161                 else
1162                 {
1163                     if( asprintf( &psz_output,
1164                               "rtp{dst=%s,port=%i,mux=%s}",
1165                               ip, i_port_video, p_media->psz_mux ) < 0 )
1166                         return VLC_ENOMEM;
1167                 }
1168             }
1169             else
1170             {
1171                 if( asprintf( &psz_output,
1172                               "rtp{dst=%s,port-video=%i,port-audio=%i}",
1173                               ip, i_port_video, i_port_audio ) < 0 )
1174                     return VLC_ENOMEM;
1175             }
1176
1177             CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1178                          0, psz_output );
1179             free( psz_output );
1180             break;
1181         }
1182
1183         case HTTPD_MSG_DESCRIBE:
1184         {
1185             char *psz_sdp =
1186                 SDPGenerate( p_media, cl );
1187
1188             if( psz_sdp != NULL )
1189             {
1190                 answer->i_status = 200;
1191                 httpd_MsgAdd( answer, "Content-type",  "%s",
1192                               "application/sdp" );
1193
1194                 answer->p_body = (uint8_t *)psz_sdp;
1195                 answer->i_body = strlen( psz_sdp );
1196             }
1197             else
1198             {
1199                 answer->i_status = 500;
1200                 answer->p_body = NULL;
1201                 answer->i_body = 0;
1202             }
1203             break;
1204         }
1205
1206         case HTTPD_MSG_PAUSE:
1207             psz_session = httpd_MsgGet( query, "Session" );
1208             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1209
1210             p_rtsp = RtspClientGet( p_media, psz_session );
1211             if( !p_rtsp ) break;
1212
1213             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1214                          0, NULL );
1215             p_rtsp->b_paused = VLC_TRUE;
1216
1217             answer->i_status = 200;
1218             answer->i_body = 0;
1219             answer->p_body = NULL;
1220             break;
1221
1222         case HTTPD_MSG_TEARDOWN:
1223             /* for now only multicast so easy again */
1224             answer->i_status = 200;
1225             answer->i_body = 0;
1226             answer->p_body = NULL;
1227
1228             psz_session = httpd_MsgGet( query, "Session" );
1229             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1230
1231             p_rtsp = RtspClientGet( p_media, psz_session );
1232             if( !p_rtsp ) break;
1233
1234             CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1235                          0, NULL );
1236             RtspClientDel( p_media, p_rtsp );
1237             break;
1238
1239         case HTTPD_MSG_GETPARAMETER:
1240             answer->i_status = 200;
1241             answer->i_body = 0;
1242             answer->p_body = NULL;
1243             break;
1244
1245         default:
1246             return VLC_EGENERIC;
1247     }
1248
1249     httpd_MsgAdd( answer, "Server", "VLC Server" );
1250     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1251     psz_cseq = httpd_MsgGet( query, "Cseq" );
1252     psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1253     httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1254     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1255
1256     if( psz_session )
1257     {
1258          if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
1259              httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1260                p_media->p_vod->p_sys->i_session_timeout );
1261          else
1262               httpd_MsgAdd( answer, "Session", "%s", psz_session );
1263     }
1264
1265     return VLC_SUCCESS;
1266 }
1267
1268 static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1269                            httpd_message_t *answer,
1270                            const httpd_message_t *query )
1271 {
1272     media_es_t *p_es = (media_es_t*)p_args;
1273     vod_media_t *p_media = p_es->p_media;
1274     vod_t *p_vod = p_media->p_vod;
1275     rtsp_client_t *p_rtsp = NULL;
1276     const char *psz_transport = NULL;
1277     const char *psz_playnow = NULL; /* support option: x-playNow */
1278     const char *psz_session = NULL;
1279     const char *psz_position = NULL;
1280     const char *psz_cseq = NULL;
1281     int i_cseq = 0;
1282     int i;
1283
1284     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1285
1286     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1287
1288     answer->i_proto   = HTTPD_PROTO_RTSP;
1289     answer->i_version = query->i_version;
1290     answer->i_type    = HTTPD_MSG_ANSWER;
1291     answer->i_body    = 0;
1292     answer->p_body      = NULL;
1293
1294     switch( query->i_type )
1295     {
1296         case HTTPD_MSG_SETUP:
1297             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1298             psz_transport = httpd_MsgGet( query, "Transport" );
1299
1300             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1301
1302             if( strstr( psz_transport, "unicast" ) &&
1303                 strstr( psz_transport, "client_port=" ) )
1304             {
1305                 rtsp_client_t *p_rtsp = NULL;
1306                 rtsp_client_es_t *p_rtsp_es = NULL;
1307                 char ip[NI_MAXNUMERICHOST];
1308                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
1309                                    strlen("client_port=") );
1310
1311                 if( httpd_ClientIP( cl, ip ) == NULL )
1312                 {
1313                     answer->i_status = 500;
1314                     answer->i_body = 0;
1315                     answer->p_body = NULL;
1316                     break;
1317                 }
1318
1319                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1320                         ip, i_port );
1321
1322                 psz_session = httpd_MsgGet( query, "Session" );
1323                 if( !psz_session || !*psz_session )
1324                 {
1325                     char *psz_new;
1326                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1327                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1328                     {
1329                         answer->i_status = 503;
1330                         answer->i_body = 0;
1331                         answer->p_body = NULL;
1332                         break;
1333                     }
1334                     if( asprintf( &psz_new, "%d", rand() ) < 0 )
1335                         return VLC_ENOMEM;
1336                     psz_session = psz_new;
1337
1338                     p_rtsp = RtspClientNew( p_media, psz_new );
1339                 }
1340                 else
1341                 {
1342                     p_rtsp = RtspClientGet( p_media, psz_session );
1343                     if( !p_rtsp )
1344                     {
1345                         answer->i_status = 454;
1346                         answer->i_body = 0;
1347                         answer->p_body = NULL;
1348                         break;
1349                     }
1350                 }
1351
1352                 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1353                 if( !p_rtsp_es )
1354                 {
1355                     answer->i_status = 500;
1356                     answer->i_body = 0;
1357                     answer->p_body = NULL;
1358                     break;
1359                 }
1360                 p_rtsp_es->i_port = i_port;
1361                 p_rtsp_es->psz_ip = strdup( ip );
1362                 p_rtsp_es->p_media_es = p_es;
1363                 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1364
1365                 answer->i_status = 200;
1366                 answer->i_body = 0;
1367                 answer->p_body = NULL;
1368
1369                 if( p_media->b_raw )
1370                 {
1371                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1372                     {
1373                         httpd_MsgAdd( answer, "Transport",
1374                                      "MP2T/H2221/UDP;client_port=%d-%d",
1375                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1376                     }
1377                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1378                     {
1379                         httpd_MsgAdd( answer, "Transport",
1380                                      "RAW/RAW/UDP;client_port=%d-%d",
1381                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1382                     }
1383                 }
1384                 else
1385                 {
1386                     httpd_MsgAdd( answer, "Transport",
1387                                   "RTP/AVP/UDP;client_port=%d-%d",
1388                                   p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1389                 }
1390             }
1391             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1392             {
1393                 answer->i_status = 461;
1394                 answer->i_body = 0;
1395                 answer->p_body = NULL;
1396             }
1397
1398             /* Intentional fall-through on x-playNow option in RTSP request */
1399             if( !psz_playnow )
1400                 break;
1401
1402         case HTTPD_MSG_PLAY:
1403             /* This is kind of a kludge. Should we only support Aggregate
1404              * Operations ? */
1405             psz_session = httpd_MsgGet( query, "Session" );
1406             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1407
1408             p_rtsp = RtspClientGet( p_media, psz_session );
1409
1410             psz_position = httpd_MsgGet( query, "Range" );
1411             if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1412             if( psz_position )
1413             {
1414                 double f_pos;
1415                 char *end;
1416
1417                 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1418
1419                 psz_position += 4;
1420                 /* FIXME: npt= is not necessarily formatted as a float */
1421                 f_pos = us_strtod( psz_position, &end );
1422                 if( end > psz_position )
1423                 {
1424                     f_pos /= ((double)(p_media->i_length))/1000 /1000 / 100;
1425                     CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1426                                  psz_session, f_pos, NULL );
1427                 }
1428             }
1429
1430             if( !psz_playnow )
1431             {
1432                 answer->i_status = 200;
1433                 answer->i_body = 0;
1434                 answer->p_body = NULL;
1435             }
1436             break;
1437
1438         case HTTPD_MSG_TEARDOWN:
1439             answer->i_status = 200;
1440             answer->i_body = 0;
1441             answer->p_body = NULL;
1442
1443             psz_session = httpd_MsgGet( query, "Session" );
1444             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1445
1446             p_rtsp = RtspClientGet( p_media, psz_session );
1447             if( !p_rtsp ) break;
1448
1449             for( i = 0; i < p_rtsp->i_es; i++ )
1450             {
1451                 if( p_rtsp->es[i]->p_media_es == p_es )
1452                 {
1453                     if( p_rtsp->es[i]->psz_ip ) free( p_rtsp->es[i]->psz_ip );
1454                     TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, p_rtsp->es[i] );
1455                     break;
1456                 }
1457             }
1458
1459             if( !p_rtsp->i_es )
1460             {
1461                 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1462                              0, NULL );
1463                 RtspClientDel( p_media, p_rtsp );
1464             }
1465             break;
1466
1467         case HTTPD_MSG_PAUSE:
1468             /* This is kind of a kludge. Should we only support Aggregate
1469              * Operations ? */
1470             psz_session = httpd_MsgGet( query, "Session" );
1471             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1472
1473             p_rtsp = RtspClientGet( p_media, psz_session );
1474             if( !p_rtsp ) break;
1475
1476             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1477                          0, NULL );
1478             p_rtsp->b_paused = VLC_TRUE;
1479
1480             answer->i_status = 200;
1481             answer->i_body = 0;
1482             answer->p_body = NULL;
1483             break;
1484
1485         default:
1486             return VLC_EGENERIC;
1487             break;
1488     }
1489
1490     httpd_MsgAdd( answer, "Server", "VLC Server" );
1491     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1492     psz_cseq = httpd_MsgGet( query, "Cseq" );
1493     if (psz_cseq)
1494         i_cseq = atoi( psz_cseq );
1495     else
1496         i_cseq = 0;
1497     httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1498     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1499
1500     if( psz_session )
1501         httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1502
1503     return VLC_SUCCESS;
1504 }
1505
1506 /*****************************************************************************
1507  * SDPGenerate: TODO
1508  * FIXME: need to be moved to a common place ?
1509  *****************************************************************************/
1510 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1511 {
1512     int i, i_size;
1513     char *p, *psz_sdp, ip[NI_MAXNUMERICHOST], ipv;
1514     const char *psz_control;
1515
1516     if( httpd_ServerIP( cl, ip ) == NULL )
1517         return NULL;
1518
1519     p = strchr( ip, '%' );
1520     if( p != NULL )
1521         *p = '\0'; /* remove scope if present */
1522
1523     ipv = ( strchr( ip, ':' ) != NULL ) ? '6' : '4';
1524
1525     /* Calculate size */
1526     i_size = sizeof( "v=0\r\n" ) +
1527         sizeof( "o=- * * IN IP4 \r\n" ) + 10 + NI_MAXNUMERICHOST +
1528         sizeof( "s=*\r\n" ) + strlen( p_media->psz_session_name ) +
1529         sizeof( "i=*\r\n" ) + strlen( p_media->psz_session_description ) +
1530         sizeof( "u=*\r\n" ) + strlen( p_media->psz_session_url ) +
1531         sizeof( "e=*\r\n" ) + strlen( p_media->psz_session_email ) +
1532         sizeof( "c=IN IP4 0.0.0.0\r\n" ) + 20 + 10 +
1533         sizeof( "t=0 0\r\n" ) + /* FIXME */
1534         sizeof( "a=tool:"PACKAGE_STRING"\r\n" ) +
1535         sizeof( "a=range:npt=0-1000000000.000\r\n" );
1536
1537     psz_control = (ipv == '6') ? p_media->psz_rtsp_control_v6
1538                                : p_media->psz_rtsp_control_v4;
1539     for( i = 0; i < p_media->i_es; i++ )
1540     {
1541         media_es_t *p_es = p_media->es[i];
1542
1543         i_size += sizeof( "m=**d*o * RTP/AVP *\r\n" ) + 19;
1544         if( p_es->psz_rtpmap )
1545         {
1546             i_size += sizeof( "a=rtpmap:* *\r\n" ) +
1547                 strlen( p_es->psz_rtpmap ) + 9;
1548         }
1549         if( p_es->psz_fmtp )
1550         {
1551             i_size += sizeof( "a=fmtp:* *\r\n" ) +
1552                 strlen( p_es->psz_fmtp ) + 9;
1553         }
1554     }
1555     i_size += (strlen( psz_control ) + strlen( ip ) + 9) * p_media->i_es;
1556
1557     p = psz_sdp = malloc( i_size );
1558     p += sprintf( p, "v=0\r\n" );
1559     p += sprintf( p, "o=- "I64Fd" %d IN IP%c %s\r\n",
1560                   p_media->i_sdp_id, p_media->i_sdp_version, ipv, ip );
1561     if( *p_media->psz_session_name )
1562         p += sprintf( p, "s=%s\r\n", p_media->psz_session_name );
1563     if( *p_media->psz_session_description )
1564         p += sprintf( p, "i=%s\r\n", p_media->psz_session_description );
1565     if( *p_media->psz_session_url )
1566         p += sprintf( p, "u=%s\r\n", p_media->psz_session_url );
1567     if( *p_media->psz_session_email )
1568         p += sprintf( p, "e=%s\r\n", p_media->psz_session_email );
1569
1570     p += sprintf( p, "c=IN IP%c %s\r\n", ipv, ipv == '6' ? "::" : "0.0.0.0" );
1571     p += sprintf( p, "t=0 0\r\n" ); /* FIXME */
1572     p += sprintf( p, "a=tool:"PACKAGE_STRING"\r\n" );
1573
1574     if( p_media->i_length > 0 )
1575     {
1576         lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
1577         p += sprintf( p, "a=range:npt=0-%lld.%03u\r\n", d.quot,
1578                       (unsigned)d.rem );
1579     }
1580
1581     for( i = 0; i < p_media->i_es; i++ )
1582     {
1583         media_es_t *p_es = p_media->es[i];
1584
1585         if( p_es->fmt.i_cat == AUDIO_ES )
1586         {
1587             p += sprintf( p, "m=audio %d RTP/AVP %d\r\n",
1588                           p_es->i_port, p_es->i_payload_type );
1589         }
1590         else if( p_es->fmt.i_cat == VIDEO_ES )
1591         {
1592             p += sprintf( p, "m=video %d RTP/AVP %d\r\n",
1593                           p_es->i_port, p_es->i_payload_type );
1594         }
1595         else
1596         {
1597             continue;
1598         }
1599
1600         if( p_es->psz_rtpmap )
1601         {
1602             p += sprintf( p, "a=rtpmap:%d %s\r\n", p_es->i_payload_type,
1603                           p_es->psz_rtpmap );
1604         }
1605         if( p_es->psz_fmtp )
1606         {
1607             p += sprintf( p, "a=fmtp:%d %s\r\n", p_es->i_payload_type,
1608                           p_es->psz_fmtp );
1609         }
1610
1611         p += sprintf( p, psz_control, ip, i );
1612     }
1613
1614     return psz_sdp;
1615 }