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 #ifndef WIN32
  48 # include <locale.h>
  49 #endif
  50
  51 /*****************************************************************************
  52  * Module descriptor
  53  *****************************************************************************/
  54 static int  Open ( vlc_object_t * );
  55 static void Close( vlc_object_t * );
  56
  57 #define HOST_TEXT N_( "RTSP host address" )
  58 #define HOST_LONGTEXT N_( \
  59     "This defines the address, port and path the RTSP VOD server will listen " \
  60     "on.\nSyntax is address:port/path. The default is to listen on all "\
  61     "interfaces (address 0.0.0.0), on port 554, with no path.\nTo listen " \
  62     "only on the local interface, use \"localhost\" as address." )
  63
  64 #define THROTLE_TEXT N_( "Maximum number of connections" )
  65 #define THROTLE_LONGTEXT N_( "This limits the maximum number of clients " \
  66     "that can connect to the RTSP VOD. 0 means no limit."  )
  67
  68 #define RAWMUX_TEXT N_( "MUX for RAW RTSP transport" )
  69
  70 #define SESSION_TIMEOUT_TEXT N_( "Sets the timeout option in the RTSP " \
  71     "session string" )
  72 #define SESSION_TIMEOUT_LONGTEXT N_( "Defines what timeout option to add " \
  73     "to the RTSP session ID string. Setting it to a negative number removes " \
  74     "the timeout option entirely. This is needed by some IPTV STBs (such as " \
  75     "those made by HansunTech) which get confused by it. The default is 5." )
  76
  77 vlc_module_begin();
  78     set_shortname( N_("RTSP VoD" ) );
  79     set_description( N_("RTSP VoD server") );
  80     set_category( CAT_SOUT );
  81     set_subcategory( SUBCAT_SOUT_VOD );
  82     set_capability( "vod server", 1 );
  83     set_callbacks( Open, Close );
  84     add_shortcut( "rtsp" );
  85     add_string ( "rtsp-host", NULL, NULL, HOST_TEXT, HOST_LONGTEXT, true );
  86     add_string( "rtsp-raw-mux", "ts", NULL, RAWMUX_TEXT,
  87                 RAWMUX_TEXT, true );
  88     add_integer( "rtsp-throttle-users", 0, NULL, THROTLE_TEXT,
  89                                            THROTLE_LONGTEXT, true );
  90     add_integer( "rtsp-session-timeout", 5, NULL, SESSION_TIMEOUT_TEXT,
  91                  SESSION_TIMEOUT_LONGTEXT, true );
  92 vlc_module_end();
  93
  94 /*****************************************************************************
  95  * Exported prototypes
  96  *****************************************************************************/
  97
  98 typedef struct media_es_t media_es_t;
  99
 100 typedef struct
 101 {
 102     media_es_t *p_media_es;
 103     char *psz_ip;
 104     int i_port;
 105
 106 } rtsp_client_es_t;
 107
 108 typedef struct
 109 {
 110     char *psz_session;
 111     int64_t i_last; /* for timeout */
 112
 113     bool b_playing; /* is it in "play" state */
 114     bool b_paused; /* is it in "pause" state */
 115
 116     int i_es;
 117     rtsp_client_es_t **es;
 118
 119 } rtsp_client_t;
 120
 121 struct media_es_t
 122 {
 123     /* VoD server */
 124     vod_t *p_vod;
 125
 126     /* RTSP server */
 127     httpd_url_t *p_rtsp_url;
 128
 129     vod_media_t *p_media;
 130
 131     es_format_t fmt;
 132     int         i_port;
 133     uint8_t     i_payload_type;
 134     char        *psz_rtpmap;
 135     char        *psz_fmtp;
 136
 137 };
 138
 139 struct vod_media_t
 140 {
 141     int id;
 142
 143     /* VoD server */
 144     vod_t *p_vod;
 145
 146     /* RTSP server */
 147     httpd_url_t  *p_rtsp_url;
 148     char         *psz_rtsp_control_v4;
 149     char         *psz_rtsp_control_v6;
 150     char         *psz_rtsp_path;
 151
 152     int  i_port;
 153     int  i_port_audio;
 154     int  i_port_video;
 155     int  i_ttl;
 156     int  i_payload_type;
 157
 158     int64_t i_sdp_id;
 159     int     i_sdp_version;
 160
 161     bool b_multicast;
 162
 163     vlc_mutex_t lock;
 164
 165     /* ES list */
 166     int        i_es;
 167     media_es_t **es;
 168     char       *psz_mux;
 169     bool  b_raw;
 170
 171     /* RTSP client */
 172     int           i_rtsp;
 173     rtsp_client_t **rtsp;
 174
 175     /* Infos */
 176     char *psz_session_name;
 177     char *psz_session_description;
 178     char *psz_session_url;
 179     char *psz_session_email;
 180     mtime_t i_length;
 181 };
 182
 183 struct vod_sys_t
 184 {
 185     /* RTSP server */
 186     httpd_host_t *p_rtsp_host;
 187     char *psz_path;
 188     int i_port;
 189     int i_throttle_users;
 190     int i_connections;
 191
 192     char *psz_raw_mux;
 193
 194     int i_session_timeout;
 195
 196     /* List of media */
 197     vlc_mutex_t lock_media;
 198     int i_media_id;
 199     int i_media;
 200     vod_media_t **media;
 201
 202     /* */
 203     block_fifo_t *p_fifo_cmd;
 204 };
 205
 206 /* rtsp delayed command (to avoid deadlock between vlm/httpd) */
 207 typedef enum
 208 {
 209     RTSP_CMD_TYPE_NONE,  /* Exit requested */
 210
 211     RTSP_CMD_TYPE_PLAY,
 212     RTSP_CMD_TYPE_PAUSE,
 213     RTSP_CMD_TYPE_STOP,
 214     RTSP_CMD_TYPE_SEEK,
 215     RTSP_CMD_TYPE_REWIND,
 216     RTSP_CMD_TYPE_FORWARD,
 217 } rtsp_cmd_type_t;
 218
 219 static vod_media_t *MediaNew( vod_t *, const char *, input_item_t * );
 220 static void         MediaDel( vod_t *, vod_media_t * );
 221 static int          MediaAddES( vod_t *, vod_media_t *, es_format_t * );
 222 static void         MediaDelES( vod_t *, vod_media_t *, es_format_t * );
 223
 224 static void CommandThread( vlc_object_t *p_this );
 225 static void CommandPush( vod_t *, rtsp_cmd_type_t, vod_media_t *, const char *psz_session,
 226                          double f_arg, const char *psz_arg );
 227
 228 static rtsp_client_t *RtspClientNew( vod_media_t *, char * );
 229 static rtsp_client_t *RtspClientGet( vod_media_t *, const char * );
 230 static void           RtspClientDel( vod_media_t *, rtsp_client_t * );
 231
 232 static int RtspCallback( httpd_callback_sys_t *, httpd_client_t *,
 233                          httpd_message_t *, const httpd_message_t * );
 234 static int RtspCallbackES( httpd_callback_sys_t *, httpd_client_t *,
 235                            httpd_message_t *, const httpd_message_t * );
 236
 237 static char *SDPGenerate( const vod_media_t *, httpd_client_t *cl );
 238
 239 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
 240 {
 241     static const char hex[16] = "0123456789abcdef";
 242     int i;
 243
 244     for( i = 0; i < i_data; i++ )
 245     {
 246         s[2*i+0] = hex[(p_data[i]>>4)&0xf];
 247         s[2*i+1] = hex[(p_data[i]   )&0xf];
 248     }
 249     s[2*i_data] = '\0';
 250 }
 251
 252 /*****************************************************************************
 253  * Open: Starts the RTSP server module
 254  *****************************************************************************/
 255 static int Open( vlc_object_t *p_this )
 256 {
 257     vod_t *p_vod = (vod_t *)p_this;
 258     vod_sys_t *p_sys = 0;
 259     char *psz_url = 0;
 260     vlc_url_t url;
 261
 262     psz_url = config_GetPsz( p_vod, "rtsp-host" );
 263     vlc_UrlParse( &url, psz_url, 0 );
 264     free( psz_url );
 265
 266     if( url.i_port <= 0 ) url.i_port = 554;
 267
 268     p_vod->p_sys = p_sys = malloc( sizeof( vod_sys_t ) );
 269     if( !p_sys ) goto error;
 270     p_sys->p_rtsp_host = 0;
 271
 272     p_sys->i_session_timeout = var_CreateGetInteger( p_this, "rtsp-session-timeout" );
 273
 274     p_sys->i_throttle_users = var_CreateGetInteger( p_this, "rtsp-throttle-users" );
 275     msg_Dbg( p_this, "allowing up to %d connections", p_sys->i_throttle_users );
 276     p_sys->i_connections = 0;
 277
 278     p_sys->psz_raw_mux = var_CreateGetString( p_this, "rtsp-raw-mux" );
 279
 280     p_sys->p_rtsp_host =
 281         httpd_HostNew( VLC_OBJECT(p_vod), url.psz_host, url.i_port );
 282     if( !p_sys->p_rtsp_host )
 283     {
 284         msg_Err( p_vod, "cannot create RTSP server (%s:%i)",
 285                  url.psz_host, url.i_port );
 286         goto error;
 287     }
 288
 289     p_sys->psz_path = strdup( url.psz_path ? url.psz_path : "/" );
 290     p_sys->i_port = url.i_port;
 291
 292     vlc_UrlClean( &url );
 293
 294     vlc_mutex_init( &p_sys->lock_media );
 295
 296     TAB_INIT( p_sys->i_media, p_sys->media );
 297     p_sys->i_media_id = 0;
 298
 299     p_vod->pf_media_new = MediaNew;
 300     p_vod->pf_media_del = MediaDel;
 301     p_vod->pf_media_add_es = MediaAddES;
 302     p_vod->pf_media_del_es = MediaDelES;
 303
 304     p_sys->p_fifo_cmd = block_FifoNew();
 305     if( vlc_thread_create( p_vod, "rtsp vod thread", CommandThread,
 306                            VLC_THREAD_PRIORITY_LOW, false ) )
 307     {
 308         msg_Err( p_vod, "cannot spawn rtsp vod thread" );
 309         block_FifoRelease( p_sys->p_fifo_cmd );
 310         free( p_sys->psz_path );
 311         goto error;
 312     }
 313
 314     return VLC_SUCCESS;
 315
 316 error:
 317     if( p_sys )
 318     {
 319         if( p_sys->p_rtsp_host ) httpd_HostDelete( p_sys->p_rtsp_host );
 320         free( p_sys->psz_raw_mux );
 321         free( p_sys );
 322     }
 323     vlc_UrlClean( &url );
 324
 325     return VLC_EGENERIC;
 326 }
 327
 328 /*****************************************************************************
 329  * Close:
 330  *****************************************************************************/
 331 static void Close( vlc_object_t * p_this )
 332 {
 333     vod_t *p_vod = (vod_t *)p_this;
 334     vod_sys_t *p_sys = p_vod->p_sys;
 335
 336     /* Stop command thread */
 337     vlc_object_kill( p_vod );
 338     CommandPush( p_vod, RTSP_CMD_TYPE_NONE, NULL, NULL, 0.0, NULL );
 339     vlc_thread_join( p_vod );
 340
 341     block_FifoRelease( p_sys->p_fifo_cmd );
 342
 343     httpd_HostDelete( p_sys->p_rtsp_host );
 344     var_Destroy( p_this, "rtsp-session-timeout" );
 345     var_Destroy( p_this, "rtsp-throttle-users" );
 346     var_Destroy( p_this, "rtsp-raw-mux" );
 347
 348     /* Check VLM is not buggy */
 349     if( p_sys->i_media > 0 )
 350         msg_Err( p_vod, "rtsp vod leaking %d medias", p_sys->i_media );
 351     TAB_CLEAN( p_sys->i_media, p_sys->media );
 352
 353     vlc_mutex_destroy( &p_sys->lock_media );
 354
 355     free( p_sys->psz_path );
 356     free( p_sys->psz_raw_mux );
 357     free( p_sys );
 358 }
 359
 360 /*****************************************************************************
 361  * Media handling
 362  *****************************************************************************/
 363 static vod_media_t *MediaNew( vod_t *p_vod, const char *psz_name,
 364                               input_item_t *p_item )
 365 {
 366     vod_sys_t *p_sys = p_vod->p_sys;
 367     vod_media_t *p_media = malloc( sizeof(vod_media_t) );
 368     int i;
 369
 370     if( !p_media )
 371         return NULL;
 372
 373     memset( p_media, 0, sizeof(vod_media_t) );
 374     p_media->id = p_sys->i_media_id++;
 375     TAB_INIT( p_media->i_es, p_media->es );
 376     p_media->psz_mux = 0;
 377     TAB_INIT( p_media->i_rtsp, p_media->rtsp );
 378     p_media->b_raw = false;
 379
 380     if( asprintf( &p_media->psz_rtsp_path, "%s%s",
 381                   p_sys->psz_path, psz_name ) <0 )
 382         return NULL;
 383     p_media->p_rtsp_url =
 384         httpd_UrlNewUnique( p_sys->p_rtsp_host, p_media->psz_rtsp_path, NULL,
 385                             NULL, NULL );
 386
 387     if( !p_media->p_rtsp_url )
 388     {
 389         msg_Err( p_vod, "cannot create RTSP url (%s)", p_media->psz_rtsp_path);
 390         free( p_media->psz_rtsp_path );
 391         free( p_media );
 392         return NULL;
 393     }
 394
 395     msg_Dbg( p_vod, "created RTSP url: %s", p_media->psz_rtsp_path );
 396
 397     if( asprintf( &p_media->psz_rtsp_control_v4,
 398                "a=control:rtsp://%%s:%d%s/trackID=%%d\r\n",
 399                p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 400         return NULL;
 401     if( asprintf( &p_media->psz_rtsp_control_v6,
 402                "a=control:rtsp://[%%s]:%d%s/trackID=%%d\r\n",
 403               p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 404         return NULL;
 405
 406     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_SETUP,
 407                     RtspCallback, (void*)p_media );
 408     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_DESCRIBE,
 409                     RtspCallback, (void*)p_media );
 410     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PLAY,
 411                     RtspCallback, (void*)p_media );
 412     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PAUSE,
 413                     RtspCallback, (void*)p_media );
 414     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_GETPARAMETER,
 415                     RtspCallback, (void*)p_media );
 416     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 417                     RtspCallback, (void*)p_media );
 418
 419     p_media->p_vod = p_vod;
 420
 421     vlc_mutex_lock( &p_sys->lock_media );
 422     TAB_APPEND( p_sys->i_media, p_sys->media, p_media );
 423     vlc_mutex_unlock( &p_sys->lock_media );
 424
 425     vlc_mutex_init( &p_media->lock );
 426     p_media->psz_session_name = strdup("");
 427     p_media->psz_session_description = strdup("");
 428     p_media->psz_session_url = strdup("");
 429     p_media->psz_session_email = strdup("");
 430
 431     p_media->i_port_audio = 1234;
 432     p_media->i_port_video = 1236;
 433     p_media->i_port       = 1238;
 434     p_media->i_payload_type = 96;
 435
 436     p_media->i_sdp_id = mdate();
 437     p_media->i_sdp_version = 1;
 438     p_media->i_length = input_item_GetDuration( p_item );
 439
 440     vlc_mutex_lock( &p_item->lock );
 441     msg_Dbg( p_vod, "media has %i declared ES", p_item->i_es );
 442     for( i = 0; i < p_item->i_es; i++ )
 443     {
 444         MediaAddES( p_vod, p_media, p_item->es[i] );
 445     }
 446     vlc_mutex_unlock( &p_item->lock );
 447
 448     return p_media;
 449 }
 450
 451 static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
 452 {
 453     vod_sys_t *p_sys = p_vod->p_sys;
 454
 455     msg_Dbg( p_vod, "deleting media: %s", p_media->psz_rtsp_path );
 456
 457     vlc_mutex_lock( &p_sys->lock_media );
 458     TAB_REMOVE( p_sys->i_media, p_sys->media, p_media );
 459     vlc_mutex_unlock( &p_sys->lock_media );
 460
 461     while( p_media->i_rtsp > 0 )
 462         RtspClientDel( p_media, p_media->rtsp[0] );
 463     TAB_CLEAN( p_media->i_rtsp, p_media->rtsp );
 464
 465     httpd_UrlDelete( p_media->p_rtsp_url );
 466     free( p_media->psz_rtsp_path );
 467     free( p_media->psz_rtsp_control_v6 );
 468     free( p_media->psz_rtsp_control_v4 );
 469
 470     while( p_media->i_es )
 471         MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );
 472     TAB_CLEAN( p_media->i_es, p_media->es );
 473
 474     vlc_mutex_destroy( &p_media->lock );
 475
 476     free( p_media->psz_session_name );
 477     free( p_media->psz_session_description );
 478     free( p_media->psz_session_url );
 479     free( p_media->psz_session_email );
 480     free( p_media->psz_mux );
 481     free( p_media );
 482 }
 483
 484 static int MediaAddES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt )
 485 {
 486     media_es_t *p_es = malloc( sizeof(media_es_t) );
 487     char *psz_urlc;
 488
 489     if( !p_es ) return VLC_ENOMEM;
 490     memset( p_es, 0, sizeof(media_es_t) );
 491
 492     free( p_media->psz_mux );
 493     p_media->psz_mux = NULL;
 494
 495     /* TODO: update SDP, etc... */
 496     if( asprintf( &psz_urlc, "%s/trackID=%d",
 497               p_media->psz_rtsp_path, p_media->i_es ) < 0 )
 498     {
 499         free( p_es );
 500         return VLC_ENOMEM;
 501     }
 502     msg_Dbg( p_vod, "  - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
 503
 504     switch( p_fmt->i_codec )
 505     {
 506         case VLC_FOURCC( 's', '1', '6', 'b' ):
 507             if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
 508             {
 509                 p_es->i_payload_type = 11;
 510             }
 511             else if( p_fmt->audio.i_channels == 2 &&
 512                      p_fmt->audio.i_rate == 44100 )
 513             {
 514                 p_es->i_payload_type = 10;
 515             }
 516             else
 517             {
 518                 p_es->i_payload_type = p_media->i_payload_type++;
 519             }
 520             p_es->psz_rtpmap = malloc( strlen( "L16/*/*" ) + 20+1 );
 521             sprintf( p_es->psz_rtpmap, "L16/%d/%d", p_fmt->audio.i_rate,
 522                     p_fmt->audio.i_channels );
 523             break;
 524         case VLC_FOURCC( 'u', '8', ' ', ' ' ):
 525             p_es->i_payload_type = p_media->i_payload_type++;
 526             p_es->psz_rtpmap = malloc( strlen( "L8/*/*" ) + 20+1 );
 527             sprintf( p_es->psz_rtpmap, "L8/%d/%d", p_fmt->audio.i_rate,
 528                     p_fmt->audio.i_channels );
 529             break;
 530         case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
 531         case VLC_FOURCC( 'm', 'p', '3', ' ' ):
 532             p_es->i_payload_type = 14;
 533             p_es->psz_rtpmap = strdup( "MPA/90000" );
 534             break;
 535         case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
 536             p_es->i_payload_type = 32;
 537             p_es->psz_rtpmap = strdup( "MPV/90000" );
 538             break;
 539         case VLC_FOURCC( 'a', '5', '2', ' ' ):
 540             p_es->i_payload_type = p_media->i_payload_type++;
 541             asprintf( &p_es->psz_rtpmap, "ac3/%d", p_fmt->audio.i_rate );
 542             break;
 543         case VLC_FOURCC( 'H', '2', '6', '3' ):
 544             p_es->i_payload_type = p_media->i_payload_type++;
 545             p_es->psz_rtpmap = strdup( "H263-1998/90000" );
 546             break;
 547         case VLC_FOURCC( 'h', '2', '6', '4' ):
 548             p_es->i_payload_type = p_media->i_payload_type++;
 549             p_es->psz_rtpmap = strdup( "H264/90000" );
 550             p_es->psz_fmtp = NULL;
 551             /* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
 552             if( p_fmt->i_extra > 0 )
 553             {
 554                 uint8_t *p_buffer = p_fmt->p_extra;
 555                 int     i_buffer = p_fmt->i_extra;
 556                 char    *p_64_sps = NULL;
 557                 char    *p_64_pps = NULL;
 558                 char    hexa[6+1];
 559
 560                 while( i_buffer > 4 &&
 561                        p_buffer[0] == 0 && p_buffer[1] == 0 &&
 562                        p_buffer[2] == 0 && p_buffer[3] == 1 )
 563                 {
 564                     const int i_nal_type = p_buffer[4]&0x1f;
 565                     int i_offset;
 566                     int i_size      = 0;
 567
 568                     i_size = i_buffer;
 569                     for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
 570                     {
 571                         if( p_buffer[i_offset] == 0 && p_buffer[i_offset+1] == 0 && p_buffer[i_offset+2] == 0 && p_buffer[i_offset+3] == 1 )
 572                         {
 573                             /* we found another startcode */
 574                             i_size = i_offset;
 575                             break;
 576                         }
 577                     }
 578                     if( i_nal_type == 7 )
 579                     {
 580                         p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 581                         sprintf_hexa( hexa, &p_buffer[5], 3 );
 582                     }
 583                     else if( i_nal_type == 8 )
 584                     {
 585                         p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 586                     }
 587                     i_buffer -= i_size;
 588                     p_buffer += i_size;
 589                 }
 590                 /* */
 591                 if( p_64_sps && p_64_pps )
 592                 {
 593                     if( asprintf( &p_es->psz_fmtp,
 594                                   "packetization-mode=1;profile-level-id=%s;"
 595                                   "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
 596                                   p_64_pps ) < 0 )
 597                     {
 598                         free( p_64_sps );
 599                         free( p_64_pps );
 600                         free( psz_urlc );
 601                         free( p_es );
 602                         return VLC_ENOMEM;
 603                     }
 604                 }
 605                 free( p_64_sps );
 606                 free( p_64_pps );
 607             }
 608             if( !p_es->psz_fmtp )
 609                 p_es->psz_fmtp = strdup( "packetization-mode=1" );
 610             break;
 611         case VLC_FOURCC( 'm', 'p', '4', 'v' ):
 612             p_es->i_payload_type = p_media->i_payload_type++;
 613             p_es->psz_rtpmap = strdup( "MP4V-ES/90000" );
 614             if( p_fmt->i_extra > 0 )
 615             {
 616                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 617                 p_es->psz_fmtp = malloc( 100 + 2 * p_fmt->i_extra );
 618                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 619                 sprintf( p_es->psz_fmtp,
 620                         "profile-level-id=3; config=%s;", p_hexa );
 621                 free( p_hexa );
 622             }
 623             break;
 624         case VLC_FOURCC( 'm', 'p', '4', 'a' ):
 625             p_es->i_payload_type = p_media->i_payload_type++;
 626             p_es->psz_rtpmap = malloc( strlen( "mpeg4-generic/" ) + 12 );
 627             sprintf( p_es->psz_rtpmap, "mpeg4-generic/%d", p_fmt->audio.i_rate );
 628             if( p_fmt->i_extra > 0 )
 629             {
 630                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 631                 p_es->psz_fmtp = malloc( 200 + 2 * p_fmt->i_extra );
 632                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 633                 sprintf( p_es->psz_fmtp,
 634                         "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
 635                         "config=%s; SizeLength=13;IndexLength=3; "
 636                         "IndexDeltaLength=3; Profile=1;", p_hexa );
 637                 free( p_hexa );
 638             }
 639             break;
 640         case VLC_FOURCC( 'm', 'p', '2', 't' ):
 641             p_media->psz_mux = strdup("ts");
 642             p_es->i_payload_type = 33;
 643             p_es->psz_rtpmap = strdup( "MP2T/90000" );
 644             break;
 645         case VLC_FOURCC( 'm', 'p', '2', 'p' ):
 646             p_media->psz_mux = strdup("ps");
 647             p_es->i_payload_type = p_media->i_payload_type++;
 648             p_es->psz_rtpmap = strdup( "MP2P/90000" );
 649             break;
 650         case VLC_FOURCC( 's', 'a', 'm', 'r' ):
 651             p_es->i_payload_type = p_media->i_payload_type++;
 652             p_es->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
 653                                     "AMR/8000/2" : "AMR/8000" );
 654             p_es->psz_fmtp = strdup( "octet-align=1" );
 655             break;
 656         case VLC_FOURCC( 's', 'a', 'w', 'b' ):
 657             p_es->i_payload_type = p_media->i_payload_type++;
 658             p_es->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
 659                                     "AMR-WB/16000/2" : "AMR-WB/16000" );
 660             p_es->psz_fmtp = strdup( "octet-align=1" );
 661             break;
 662
 663         default:
 664             msg_Err( p_vod, "cannot add this stream (unsupported "
 665                     "codec: %4.4s)", (char*)&p_fmt->i_codec );
 666             free( psz_urlc );
 667             free( p_es );
 668             return VLC_EGENERIC;
 669     }
 670
 671     p_es->p_rtsp_url =
 672         httpd_UrlNewUnique( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL,
 673                             NULL );
 674
 675     if( !p_es->p_rtsp_url )
 676     {
 677         msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
 678         free( psz_urlc );
 679         free( p_es );
 680         return VLC_EGENERIC;
 681     }
 682     free( psz_urlc );
 683
 684     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
 685                     RtspCallbackES, (void*)p_es );
 686     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 687                     RtspCallbackES, (void*)p_es );
 688     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
 689                     RtspCallbackES, (void*)p_es );
 690     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
 691                     RtspCallbackES, (void*)p_es );
 692
 693     es_format_Copy( &p_es->fmt, p_fmt );
 694     p_es->p_vod = p_vod;
 695     p_es->p_media = p_media;
 696
 697 #if 0
 698     /* Choose the port */
 699     if( p_fmt->i_cat == AUDIO_ES && p_media->i_port_audio > 0 )
 700     {
 701         p_es->i_port = p_media->i_port_audio;
 702         p_media->i_port_audio = 0;
 703     }
 704     else if( p_fmt->i_cat == VIDEO_ES && p_media->i_port_video > 0 )
 705     {
 706         p_es->i_port = p_media->i_port_video;
 707         p_media->i_port_video = 0;
 708     }
 709     while( !p_es->i_port )
 710     {
 711         if( p_media->i_port != p_media->i_port_audio &&
 712             p_media->i_port != p_media->i_port_video )
 713         {
 714             p_es->i_port = p_media->i_port;
 715             p_media->i_port += 2;
 716             break;
 717         }
 718         p_media->i_port += 2;
 719     }
 720 #else
 721
 722     p_es->i_port = 0;
 723 #endif
 724
 725     vlc_mutex_lock( &p_media->lock );
 726     TAB_APPEND( p_media->i_es, p_media->es, p_es );
 727     vlc_mutex_unlock( &p_media->lock );
 728
 729     p_media->i_sdp_version++;
 730
 731     return VLC_SUCCESS;
 732 }
 733
 734 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
 735 {
 736     media_es_t *p_es = NULL;
 737     int i;
 738
 739     /* Find the ES */
 740     for( i = 0; i < p_media->i_es; i++ )
 741     {
 742         if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
 743             p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
 744             p_media->es[i]->fmt.i_id == p_fmt->i_id )
 745         {
 746             p_es = p_media->es[i];
 747         }
 748     }
 749     if( !p_es ) return;
 750
 751     msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );
 752
 753     vlc_mutex_lock( &p_media->lock );
 754     TAB_REMOVE( p_media->i_es, p_media->es, p_es );
 755     vlc_mutex_unlock( &p_media->lock );
 756
 757     free( p_es->psz_rtpmap );
 758     free( p_es->psz_fmtp );
 759     p_media->i_sdp_version++;
 760
 761     if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
 762     es_format_Clean( &p_es->fmt );
 763     free( p_es );
 764 }
 765
 766 /* */
 767 typedef struct
 768 {
 769     int i_type;
 770     int i_media_id;
 771     //vod_media_t *p_media;
 772     char *psz_session;
 773     char *psz_arg;
 774     double f_arg;
 775 } rtsp_cmd_t;
 776
 777 static void CommandPush( vod_t *p_vod, rtsp_cmd_type_t i_type, vod_media_t *p_media, const char *psz_session,
 778                          double f_arg, const char *psz_arg )
 779 {
 780     rtsp_cmd_t cmd;
 781     block_t *p_cmd;
 782
 783     memset( &cmd, 0, sizeof(cmd) );
 784     cmd.i_type = i_type;
 785     if( p_media )
 786         cmd.i_media_id = p_media->id;
 787     if( psz_session )
 788         cmd.psz_session = strdup(psz_session);
 789     cmd.f_arg = f_arg;
 790     if( psz_arg )
 791         cmd.psz_arg = strdup(psz_arg);
 792
 793     p_cmd = block_New( p_vod, sizeof(rtsp_cmd_t) );
 794     memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
 795
 796     block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
 797 }
 798
 799 static void CommandThread( vlc_object_t *p_this )
 800 {
 801     vod_t *p_vod = (vod_t*)p_this;
 802     vod_sys_t *p_sys = p_vod->p_sys;
 803
 804     while( vlc_object_alive (p_vod) )
 805     {
 806         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 807         rtsp_cmd_t cmd;
 808         vod_media_t *p_media = NULL;
 809         int i;
 810
 811         if( !p_block_cmd )
 812             break;
 813
 814         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 815         block_Release( p_block_cmd );
 816
 817         if( cmd.i_type == RTSP_CMD_TYPE_NONE )
 818             break;
 819
 820         /* */
 821         vlc_mutex_lock( &p_sys->lock_media );
 822         for( i = 0; i < p_sys->i_media; i++ )
 823         {
 824             if( p_sys->media[i]->id == cmd.i_media_id )
 825                 break;
 826         }
 827         if( i >= p_sys->i_media )
 828             goto next;
 829         p_media = p_sys->media[i];
 830
 831         switch( cmd.i_type )
 832         {
 833         case RTSP_CMD_TYPE_PLAY:
 834             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 835                               VOD_MEDIA_PLAY, cmd.psz_arg );
 836             break;
 837         case RTSP_CMD_TYPE_PAUSE:
 838             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 839                               VOD_MEDIA_PAUSE );
 840             break;
 841
 842         case RTSP_CMD_TYPE_STOP:
 843             vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
 844             break;
 845
 846         case RTSP_CMD_TYPE_SEEK:
 847             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 848                               VOD_MEDIA_SEEK, cmd.f_arg );
 849             break;
 850
 851         case RTSP_CMD_TYPE_REWIND:
 852             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 853                               VOD_MEDIA_REWIND, cmd.f_arg );
 854             break;
 855
 856         case RTSP_CMD_TYPE_FORWARD:
 857             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 858                               VOD_MEDIA_FORWARD, cmd.f_arg );
 859             break;
 860
 861         default:
 862             break;
 863         }
 864
 865     next:
 866         vlc_mutex_unlock( &p_sys->lock_media );
 867         free( cmd.psz_session );
 868         free( cmd.psz_arg );
 869     }
 870 }
 871
 872 /****************************************************************************
 873  * RTSP server implementation
 874  ****************************************************************************/
 875 static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
 876 {
 877     rtsp_client_t *p_rtsp = malloc( sizeof(rtsp_client_t) );
 878
 879     if( !p_rtsp ) return NULL;
 880     memset( p_rtsp, 0, sizeof(rtsp_client_t) );
 881     p_rtsp->es = 0;
 882
 883     p_rtsp->psz_session = psz_session;
 884     TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 885
 886     p_media->p_vod->p_sys->i_connections++;
 887     msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
 888              psz_session, p_media->p_vod->p_sys->i_throttle_users );
 889
 890     return p_rtsp;
 891 }
 892
 893 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
 894 {
 895     int i;
 896
 897     for( i = 0; psz_session && i < p_media->i_rtsp; i++ )
 898     {
 899         if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
 900             return p_media->rtsp[i];
 901     }
 902
 903     return NULL;
 904 }
 905
 906 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
 907 {
 908     p_media->p_vod->p_sys->i_connections--;
 909     msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
 910              p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
 911
 912     while( p_rtsp->i_es-- )
 913     {
 914         free( p_rtsp->es[p_rtsp->i_es]->psz_ip );
 915         free( p_rtsp->es[p_rtsp->i_es] );
 916         if( !p_rtsp->i_es ) free( p_rtsp->es );
 917     }
 918
 919     TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 920
 921     free( p_rtsp->psz_session );
 922     free( p_rtsp );
 923 }
 924
 925
 926 static float ParseNPT (const char *str)
 927 {
 928      locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
 929      locale_t oldloc = uselocale (loc);
 930      unsigned hour, min;
 931      float sec;
 932
 933      if (sscanf (str, "%u:%u:%f", &hour, &min, &sec) == 3)
 934          sec += ((hour * 60) + min) * 60;
 935      else
 936      if (sscanf (str, "%f", &sec) != 1)
 937          sec = 0.;
 938
 939      if (loc != (locale_t)0)
 940      {
 941          uselocale (oldloc);
 942          freelocale (loc);
 943      }
 944      return sec;
 945 }
 946
 947
 948 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
 949                          httpd_message_t *answer, const httpd_message_t *query )
 950 {
 951     vod_media_t *p_media = (vod_media_t*)p_args;
 952     vod_t *p_vod = p_media->p_vod;
 953     const char *psz_transport = NULL;
 954     const char *psz_playnow = NULL; /* support option: x-playNow */
 955     const char *psz_session = NULL;
 956     const char *psz_cseq = NULL;
 957     rtsp_client_t *p_rtsp;
 958     int i_port = 0;
 959     int i_cseq = 0;
 960
 961     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
 962
 963     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
 964
 965     answer->i_proto   = HTTPD_PROTO_RTSP;
 966     answer->i_version = query->i_version;
 967     answer->i_type    = HTTPD_MSG_ANSWER;
 968     answer->i_body    = 0;
 969     answer->p_body    = NULL;
 970
 971     switch( query->i_type )
 972     {
 973         case HTTPD_MSG_SETUP:
 974         {
 975             psz_playnow = httpd_MsgGet( query, "x-playNow" );
 976             psz_transport = httpd_MsgGet( query, "Transport" );
 977             if( psz_transport == NULL )
 978             {
 979                 answer->i_status = 400;
 980                 break;
 981             }
 982             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
 983
 984             if( strstr( psz_transport, "unicast" ) &&
 985                 strstr( psz_transport, "client_port=" ) )
 986             {
 987                 rtsp_client_t *p_rtsp = NULL;
 988                 char ip[NI_MAXNUMERICHOST];
 989                 i_port = atoi( strstr( psz_transport, "client_port=" ) +
 990                                 strlen("client_port=") );
 991
 992                 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
 993                     strstr( psz_transport, "RAW/RAW/UDP" ) )
 994                 {
 995                     free( p_media->psz_mux );
 996                     p_media->psz_mux = NULL;
 997                     p_media->psz_mux = strdup( p_vod->p_sys->psz_raw_mux );
 998                     p_media->b_raw = true;
 999                 }
1000
1001                 if( httpd_ClientIP( cl, ip ) == NULL )
1002                 {
1003                     answer->i_status = 500;
1004                     answer->i_body = 0;
1005                     answer->p_body = NULL;
1006                     break;
1007                 }
1008
1009                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1010                          ip, i_port );
1011
1012                 psz_session = httpd_MsgGet( query, "Session" );
1013                 if( !psz_session || !*psz_session )
1014                 {
1015                     char *psz_new;
1016                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1017                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1018                     {
1019                         answer->i_status = 503;
1020                         answer->i_body = 0;
1021                         answer->p_body = NULL;
1022                         break;
1023                     }
1024                     if( asprintf( &psz_new, "%d", rand() ) < 0 )
1025                         return VLC_ENOMEM;
1026                     psz_session = psz_new;
1027
1028                     p_rtsp = RtspClientNew( p_media, psz_new );
1029                     if( !p_rtsp )
1030                     {
1031                         answer->i_status = 454;
1032                         answer->i_body = 0;
1033                         answer->p_body = NULL;
1034                         break;
1035                     }
1036                 }
1037                 else
1038                 {
1039                     p_rtsp = RtspClientGet( p_media, psz_session );
1040                     if( !p_rtsp )
1041                     {
1042                         answer->i_status = 454;
1043                         answer->i_body = 0;
1044                         answer->p_body = NULL;
1045                         break;
1046                     }
1047                 }
1048
1049                 answer->i_status = 200;
1050                 answer->i_body = 0;
1051                 answer->p_body = NULL;
1052
1053                 if( p_media->b_raw )
1054                 {
1055                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1056                     {
1057                         httpd_MsgAdd( answer, "Transport",
1058                                       "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1059                                       i_port, i_port + 1 );
1060                     }
1061                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1062                     {
1063                         httpd_MsgAdd( answer, "Transport",
1064                                       "RAW/RAW/UDP;unicast;client_port=%d-%d",
1065                                       i_port, i_port + 1 );
1066                     }
1067                 }
1068                 else
1069                     httpd_MsgAdd( answer, "Transport",
1070                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1071                                   i_port, i_port + 1 );
1072             }
1073             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1074             {
1075                 answer->i_status = 461;
1076                 answer->i_body = 0;
1077                 answer->p_body = NULL;
1078             }
1079
1080             /* Intentional fall-through on x-playNow option in RTSP request */
1081             if( !psz_playnow )
1082                 break;
1083         }
1084
1085         case HTTPD_MSG_PLAY:
1086         {
1087             char *psz_output, ip[NI_MAXNUMERICHOST];
1088             int i, i_port_audio = 0, i_port_video = 0;
1089
1090             /* for now only multicast so easy */
1091             if( !psz_playnow )
1092             {
1093                 answer->i_status = 200;
1094                 answer->i_body = 0;
1095                 answer->p_body = NULL;
1096             }
1097
1098             if( !psz_session )
1099                 psz_session = httpd_MsgGet( query, "Session" );
1100             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1101
1102             p_rtsp = RtspClientGet( p_media, psz_session );
1103             if( !p_rtsp )
1104             {
1105                 answer->i_status = 500;
1106                 answer->i_body = 0;
1107                 answer->p_body = NULL;
1108                 break;
1109             }
1110
1111             if( p_rtsp->b_playing )
1112             {
1113                 const char *psz_position = httpd_MsgGet( query, "Range" );
1114                 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1115                 if( psz_position )
1116                     psz_position = strstr( psz_position, "npt=" );
1117                 if( psz_position && !psz_scale )
1118                 {
1119                     double f_pos = ParseNPT (psz_position + 4);
1120                     msg_Dbg( p_vod, "seeking request: %s", psz_position );
1121                     f_pos /= ((double)(p_media->i_length))/1000 /1000 / 100;
1122                     CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1123                                  psz_session, f_pos, NULL );
1124                     break;
1125                 }
1126                 if( psz_scale )
1127                 {
1128                     double f_scale = 0.0;
1129                     char *end;
1130
1131                     f_scale = us_strtod( psz_scale, &end );
1132                     if( end > psz_scale )
1133                     {
1134                         f_scale = (f_scale * 30.0);
1135                         if( psz_scale[0] == '-' ) /* rewind */
1136                         {
1137                             msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1138                             CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
1139                                          psz_session, f_scale, NULL );
1140                         }
1141                         else if(psz_scale[0] != '1' ) /* fast-forward */
1142                         {
1143                             msg_Dbg( p_vod, "fastforward request: %s",
1144                                      psz_scale );
1145                             CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
1146                                          psz_session, f_scale, NULL );
1147                         }
1148
1149                         if( p_rtsp->b_paused == true )
1150                         {
1151                             p_rtsp->b_paused = false;
1152                             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1153                                          psz_session, 0, NULL );
1154                         }
1155                     }
1156                     break;
1157                 }
1158             }
1159
1160             if( p_rtsp->b_playing && p_rtsp->b_paused )
1161             {
1162                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1163                              psz_session, 0, NULL );
1164                 p_rtsp->b_paused = false;
1165                 break;
1166             }
1167             else if( p_rtsp->b_playing ) break;
1168
1169             if( httpd_ClientIP( cl, ip ) == NULL ) break;
1170
1171             p_rtsp->b_playing = true;
1172
1173             /* FIXME for != 1 video and 1 audio */
1174             for( i = 0; i < p_rtsp->i_es; i++ )
1175             {
1176                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1177                     i_port_audio = p_rtsp->es[i]->i_port;
1178                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1179                     i_port_video = p_rtsp->es[i]->i_port;
1180             }
1181
1182             if( p_media->psz_mux )
1183             {
1184                 if( p_media->b_raw )
1185                 {
1186                     if( asprintf( &psz_output,
1187                               "std{access=udp,dst=%s:%i,mux=%s}",
1188                               ip, i_port, p_media->psz_mux ) < 0 )
1189                         return VLC_ENOMEM;
1190                 }
1191                 else
1192                 {
1193                     if( asprintf( &psz_output,
1194                               "rtp{dst=%s,port=%i,mux=%s}",
1195                               ip, i_port_video, p_media->psz_mux ) < 0 )
1196                         return VLC_ENOMEM;
1197                 }
1198             }
1199             else
1200             {
1201                 if( asprintf( &psz_output,
1202                               "rtp{dst=%s,port-video=%i,port-audio=%i}",
1203                               ip, i_port_video, i_port_audio ) < 0 )
1204                     return VLC_ENOMEM;
1205             }
1206
1207             CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1208                          0, psz_output );
1209             free( psz_output );
1210             break;
1211         }
1212
1213         case HTTPD_MSG_DESCRIBE:
1214         {
1215             char *psz_sdp =
1216                 SDPGenerate( p_media, cl );
1217
1218             if( psz_sdp != NULL )
1219             {
1220                 answer->i_status = 200;
1221                 httpd_MsgAdd( answer, "Content-type",  "%s",
1222                               "application/sdp" );
1223
1224                 answer->p_body = (uint8_t *)psz_sdp;
1225                 answer->i_body = strlen( psz_sdp );
1226             }
1227             else
1228             {
1229                 answer->i_status = 500;
1230                 answer->p_body = NULL;
1231                 answer->i_body = 0;
1232             }
1233             break;
1234         }
1235
1236         case HTTPD_MSG_PAUSE:
1237             psz_session = httpd_MsgGet( query, "Session" );
1238             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1239
1240             p_rtsp = RtspClientGet( p_media, psz_session );
1241             if( !p_rtsp ) break;
1242
1243             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1244                          0, NULL );
1245             p_rtsp->b_paused = true;
1246
1247             answer->i_status = 200;
1248             answer->i_body = 0;
1249             answer->p_body = NULL;
1250             break;
1251
1252         case HTTPD_MSG_TEARDOWN:
1253             /* for now only multicast so easy again */
1254             answer->i_status = 200;
1255             answer->i_body = 0;
1256             answer->p_body = NULL;
1257
1258             psz_session = httpd_MsgGet( query, "Session" );
1259             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1260
1261             p_rtsp = RtspClientGet( p_media, psz_session );
1262             if( !p_rtsp ) break;
1263
1264             CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1265                          0, NULL );
1266             RtspClientDel( p_media, p_rtsp );
1267             break;
1268
1269         case HTTPD_MSG_GETPARAMETER:
1270             answer->i_status = 200;
1271             answer->i_body = 0;
1272             answer->p_body = NULL;
1273             break;
1274
1275         default:
1276             return VLC_EGENERIC;
1277     }
1278
1279     httpd_MsgAdd( answer, "Server", "VLC Server" );
1280     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1281     psz_cseq = httpd_MsgGet( query, "Cseq" );
1282     psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1283     httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1284     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1285
1286     if( psz_session )
1287     {
1288          if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
1289              httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1290                p_media->p_vod->p_sys->i_session_timeout );
1291          else
1292               httpd_MsgAdd( answer, "Session", "%s", psz_session );
1293     }
1294
1295     return VLC_SUCCESS;
1296 }
1297
1298 static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1299                            httpd_message_t *answer,
1300                            const httpd_message_t *query )
1301 {
1302     media_es_t *p_es = (media_es_t*)p_args;
1303     vod_media_t *p_media = p_es->p_media;
1304     vod_t *p_vod = p_media->p_vod;
1305     rtsp_client_t *p_rtsp = NULL;
1306     const char *psz_transport = NULL;
1307     const char *psz_playnow = NULL; /* support option: x-playNow */
1308     const char *psz_session = NULL;
1309     const char *psz_position = NULL;
1310     const char *psz_cseq = NULL;
1311     int i_cseq = 0;
1312     int i;
1313
1314     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1315
1316     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1317
1318     answer->i_proto   = HTTPD_PROTO_RTSP;
1319     answer->i_version = query->i_version;
1320     answer->i_type    = HTTPD_MSG_ANSWER;
1321     answer->i_body    = 0;
1322     answer->p_body      = NULL;
1323
1324     switch( query->i_type )
1325     {
1326         case HTTPD_MSG_SETUP:
1327             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1328             psz_transport = httpd_MsgGet( query, "Transport" );
1329
1330             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1331
1332             if( strstr( psz_transport, "unicast" ) &&
1333                 strstr( psz_transport, "client_port=" ) )
1334             {
1335                 rtsp_client_t *p_rtsp = NULL;
1336                 rtsp_client_es_t *p_rtsp_es = NULL;
1337                 char ip[NI_MAXNUMERICHOST];
1338                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
1339                                    strlen("client_port=") );
1340
1341                 if( httpd_ClientIP( cl, ip ) == NULL )
1342                 {
1343                     answer->i_status = 500;
1344                     answer->i_body = 0;
1345                     answer->p_body = NULL;
1346                     break;
1347                 }
1348
1349                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1350                         ip, i_port );
1351
1352                 psz_session = httpd_MsgGet( query, "Session" );
1353                 if( !psz_session || !*psz_session )
1354                 {
1355                     char *psz_new;
1356                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1357                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1358                     {
1359                         answer->i_status = 503;
1360                         answer->i_body = 0;
1361                         answer->p_body = NULL;
1362                         break;
1363                     }
1364                     if( asprintf( &psz_new, "%d", rand() ) < 0 )
1365                         return VLC_ENOMEM;
1366                     psz_session = psz_new;
1367
1368                     p_rtsp = RtspClientNew( p_media, psz_new );
1369                 }
1370                 else
1371                 {
1372                     p_rtsp = RtspClientGet( p_media, psz_session );
1373                     if( !p_rtsp )
1374                     {
1375                         answer->i_status = 454;
1376                         answer->i_body = 0;
1377                         answer->p_body = NULL;
1378                         break;
1379                     }
1380                 }
1381
1382                 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1383                 if( !p_rtsp_es )
1384                 {
1385                     answer->i_status = 500;
1386                     answer->i_body = 0;
1387                     answer->p_body = NULL;
1388                     break;
1389                 }
1390                 p_rtsp_es->i_port = i_port;
1391                 p_rtsp_es->psz_ip = strdup( ip );
1392                 p_rtsp_es->p_media_es = p_es;
1393                 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1394
1395                 answer->i_status = 200;
1396                 answer->i_body = 0;
1397                 answer->p_body = NULL;
1398
1399                 if( p_media->b_raw )
1400                 {
1401                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1402                     {
1403                         httpd_MsgAdd( answer, "Transport",
1404                                      "MP2T/H2221/UDP;client_port=%d-%d",
1405                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1406                     }
1407                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1408                     {
1409                         httpd_MsgAdd( answer, "Transport",
1410                                      "RAW/RAW/UDP;client_port=%d-%d",
1411                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1412                     }
1413                 }
1414                 else
1415                 {
1416                     httpd_MsgAdd( answer, "Transport",
1417                                   "RTP/AVP/UDP;client_port=%d-%d",
1418                                   p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1419                 }
1420             }
1421             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1422             {
1423                 answer->i_status = 461;
1424                 answer->i_body = 0;
1425                 answer->p_body = NULL;
1426             }
1427
1428             /* Intentional fall-through on x-playNow option in RTSP request */
1429             if( !psz_playnow )
1430                 break;
1431
1432         case HTTPD_MSG_PLAY:
1433             /* This is kind of a kludge. Should we only support Aggregate
1434              * Operations ? */
1435             psz_session = httpd_MsgGet( query, "Session" );
1436             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1437
1438             p_rtsp = RtspClientGet( p_media, psz_session );
1439
1440             psz_position = httpd_MsgGet( query, "Range" );
1441             if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1442             if( psz_position )
1443             {
1444                 double f_pos = ParseNPT (psz_position + 4);
1445                 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1446                 f_pos /= ((double)(p_media->i_length))/1000 /1000 / 100;
1447                 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1448                              psz_session, f_pos, NULL );
1449             }
1450
1451             if( !psz_playnow )
1452             {
1453                 answer->i_status = 200;
1454                 answer->i_body = 0;
1455                 answer->p_body = NULL;
1456             }
1457             break;
1458
1459         case HTTPD_MSG_TEARDOWN:
1460             answer->i_status = 200;
1461             answer->i_body = 0;
1462             answer->p_body = NULL;
1463
1464             psz_session = httpd_MsgGet( query, "Session" );
1465             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1466
1467             p_rtsp = RtspClientGet( p_media, psz_session );
1468             if( !p_rtsp ) break;
1469
1470             for( i = 0; i < p_rtsp->i_es; i++ )
1471             {
1472                 if( p_rtsp->es[i]->p_media_es == p_es )
1473                 {
1474                     free( p_rtsp->es[i]->psz_ip );
1475                     TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, p_rtsp->es[i] );
1476                     break;
1477                 }
1478             }
1479
1480             if( !p_rtsp->i_es )
1481             {
1482                 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1483                              0, NULL );
1484                 RtspClientDel( p_media, p_rtsp );
1485             }
1486             break;
1487
1488         case HTTPD_MSG_PAUSE:
1489             /* This is kind of a kludge. Should we only support Aggregate
1490              * Operations ? */
1491             psz_session = httpd_MsgGet( query, "Session" );
1492             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1493
1494             p_rtsp = RtspClientGet( p_media, psz_session );
1495             if( !p_rtsp ) break;
1496
1497             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1498                          0, NULL );
1499             p_rtsp->b_paused = true;
1500
1501             answer->i_status = 200;
1502             answer->i_body = 0;
1503             answer->p_body = NULL;
1504             break;
1505
1506         default:
1507             return VLC_EGENERIC;
1508             break;
1509     }
1510
1511     httpd_MsgAdd( answer, "Server", "VLC Server" );
1512     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1513     psz_cseq = httpd_MsgGet( query, "Cseq" );
1514     if (psz_cseq)
1515         i_cseq = atoi( psz_cseq );
1516     else
1517         i_cseq = 0;
1518     httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1519     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1520
1521     if( psz_session )
1522         httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1523
1524     return VLC_SUCCESS;
1525 }
1526
1527 /*****************************************************************************
1528  * SDPGenerate: TODO
1529  * FIXME: need to be moved to a common place ?
1530  *****************************************************************************/
1531 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1532 {
1533     int i, i_size;
1534     char *p, *psz_sdp, ip[NI_MAXNUMERICHOST], ipv;
1535     const char *psz_control;
1536
1537     if( httpd_ServerIP( cl, ip ) == NULL )
1538         return NULL;
1539
1540     p = strchr( ip, '%' );
1541     if( p != NULL )
1542         *p = '\0'; /* remove scope if present */
1543
1544     ipv = ( strchr( ip, ':' ) != NULL ) ? '6' : '4';
1545
1546     /* Calculate size */
1547     i_size = sizeof( "v=0\r\n" ) +
1548         sizeof( "o=- * * IN IP4 \r\n" ) + 10 + NI_MAXNUMERICHOST +
1549         sizeof( "s=*\r\n" ) + strlen( p_media->psz_session_name ) +
1550         sizeof( "i=*\r\n" ) + strlen( p_media->psz_session_description ) +
1551         sizeof( "u=*\r\n" ) + strlen( p_media->psz_session_url ) +
1552         sizeof( "e=*\r\n" ) + strlen( p_media->psz_session_email ) +
1553         sizeof( "c=IN IP4 0.0.0.0\r\n" ) + 20 + 10 +
1554         sizeof( "t=0 0\r\n" ) + /* FIXME */
1555         sizeof( "a=tool:"PACKAGE_STRING"\r\n" ) +
1556         sizeof( "a=range:npt=0-1000000000.000\r\n" );
1557
1558     psz_control = (ipv == '6') ? p_media->psz_rtsp_control_v6
1559                                : p_media->psz_rtsp_control_v4;
1560     for( i = 0; i < p_media->i_es; i++ )
1561     {
1562         media_es_t *p_es = p_media->es[i];
1563
1564         i_size += sizeof( "m=**d*o * RTP/AVP *\r\n" ) + 19;
1565         if( p_es->psz_rtpmap )
1566         {
1567             i_size += sizeof( "a=rtpmap:* *\r\n" ) +
1568                 strlen( p_es->psz_rtpmap ) + 9;
1569         }
1570         if( p_es->psz_fmtp )
1571         {
1572             i_size += sizeof( "a=fmtp:* *\r\n" ) +
1573                 strlen( p_es->psz_fmtp ) + 9;
1574         }
1575     }
1576     i_size += (strlen( psz_control ) + strlen( ip ) + 9) * p_media->i_es;
1577
1578     p = psz_sdp = malloc( i_size );
1579     p += sprintf( p, "v=0\r\n" );
1580     p += sprintf( p, "o=- %"PRId64" %d IN IP%c %s\r\n",
1581                   p_media->i_sdp_id, p_media->i_sdp_version, ipv, ip );
1582     if( *p_media->psz_session_name )
1583         p += sprintf( p, "s=%s\r\n", p_media->psz_session_name );
1584     if( *p_media->psz_session_description )
1585         p += sprintf( p, "i=%s\r\n", p_media->psz_session_description );
1586     if( *p_media->psz_session_url )
1587         p += sprintf( p, "u=%s\r\n", p_media->psz_session_url );
1588     if( *p_media->psz_session_email )
1589         p += sprintf( p, "e=%s\r\n", p_media->psz_session_email );
1590
1591     p += sprintf( p, "c=IN IP%c %s\r\n", ipv, ipv == '6' ? "::" : "0.0.0.0" );
1592     p += sprintf( p, "t=0 0\r\n" ); /* FIXME */
1593     p += sprintf( p, "a=tool:"PACKAGE_STRING"\r\n" );
1594
1595     if( p_media->i_length > 0 )
1596     {
1597         lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
1598         p += sprintf( p, "a=range:npt=0-%lld.%03u\r\n", d.quot,
1599                       (unsigned)d.rem );
1600     }
1601
1602     for( i = 0; i < p_media->i_es; i++ )
1603     {
1604         media_es_t *p_es = p_media->es[i];
1605
1606         if( p_es->fmt.i_cat == AUDIO_ES )
1607         {
1608             p += sprintf( p, "m=audio %d RTP/AVP %d\r\n",
1609                           p_es->i_port, p_es->i_payload_type );
1610         }
1611         else if( p_es->fmt.i_cat == VIDEO_ES )
1612         {
1613             p += sprintf( p, "m=video %d RTP/AVP %d\r\n",
1614                           p_es->i_port, p_es->i_payload_type );
1615         }
1616         else
1617         {
1618             continue;
1619         }
1620
1621         if( p_es->psz_rtpmap )
1622         {
1623             p += sprintf( p, "a=rtpmap:%d %s\r\n", p_es->i_payload_type,
1624                           p_es->psz_rtpmap );
1625         }
1626         if( p_es->psz_fmtp )
1627         {
1628             p += sprintf( p, "a=fmtp:%d %s\r\n", p_es->i_payload_type,
1629                           p_es->psz_fmtp );
1630         }
1631
1632         p += sprintf( p, psz_control, ip, i );
1633     }
1634
1635     return psz_sdp;
1636 }