git.sesse.net Git - vlc/blob - modules/misc/rtsp.c

   1 /*****************************************************************************
   2  * rtsp.c: rtsp VoD server module
   3  *****************************************************************************
   4  * Copyright (C) 2003-2006 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   8  *          Gildas Bazin <gbazin@videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32
  33 #include <vlc_common.h>
  34 #include <vlc_plugin.h>
  35 #include <vlc_input.h>
  36 #include <vlc_sout.h>
  37 #include <vlc_block.h>
  38
  39 #include "vlc_httpd.h"
  40 #include "vlc_vod.h"
  41 #include "vlc_url.h"
  42 #include <vlc_network.h>
  43 #include <vlc_charset.h>
  44 #include <vlc_strings.h>
  45
  46 #include <errno.h>
  47
  48 #ifndef WIN32
  49 # include <locale.h>
  50 #endif
  51
  52 #ifdef HAVE_XLOCALE_H
  53 # include <xlocale.h>
  54 #endif
  55
  56 /*****************************************************************************
  57  * Module descriptor
  58  *****************************************************************************/
  59 static int  Open ( vlc_object_t * );
  60 static void Close( vlc_object_t * );
  61
  62 #define HOST_TEXT N_( "RTSP host address" )
  63 #define HOST_LONGTEXT N_( \
  64     "This defines the address, port and path the RTSP VOD server will listen " \
  65     "on.\nSyntax is address:port/path. The default is to listen on all "\
  66     "interfaces (address 0.0.0.0), on port 554, with no path.\nTo listen " \
  67     "only on the local interface, use \"localhost\" as address." )
  68
  69 #define THROTLE_TEXT N_( "Maximum number of connections" )
  70 #define THROTLE_LONGTEXT N_( "This limits the maximum number of clients " \
  71     "that can connect to the RTSP VOD. 0 means no limit."  )
  72
  73 #define RAWMUX_TEXT N_( "MUX for RAW RTSP transport" )
  74
  75 #define SESSION_TIMEOUT_TEXT N_( "Sets the timeout option in the RTSP " \
  76     "session string" )
  77 #define SESSION_TIMEOUT_LONGTEXT N_( "Defines what timeout option to add " \
  78     "to the RTSP session ID string. Setting it to a negative number removes " \
  79     "the timeout option entirely. This is needed by some IPTV STBs (such as " \
  80     "those made by HansunTech) which get confused by it. The default is 5." )
  81
  82 vlc_module_begin ()
  83     set_shortname( N_("RTSP VoD" ) )
  84     set_description( N_("RTSP VoD server") )
  85     set_category( CAT_SOUT )
  86     set_subcategory( SUBCAT_SOUT_VOD )
  87     set_capability( "vod server", 1 )
  88     set_callbacks( Open, Close )
  89     add_shortcut( "rtsp" )
  90     add_string ( "rtsp-host", NULL, NULL, HOST_TEXT, HOST_LONGTEXT, true )
  91     add_string( "rtsp-raw-mux", "ts", NULL, RAWMUX_TEXT,
  92                 RAWMUX_TEXT, true )
  93     add_integer( "rtsp-throttle-users", 0, NULL, THROTLE_TEXT,
  94                                            THROTLE_LONGTEXT, true )
  95     add_integer( "rtsp-session-timeout", 5, NULL, SESSION_TIMEOUT_TEXT,
  96                  SESSION_TIMEOUT_LONGTEXT, true )
  97 vlc_module_end ()
  98
  99 /*****************************************************************************
 100  * Exported prototypes
 101  *****************************************************************************/
 102
 103 typedef struct media_es_t media_es_t;
 104
 105 typedef struct
 106 {
 107     media_es_t *p_media_es;
 108     char *psz_ip;
 109     int i_port;
 110
 111 } rtsp_client_es_t;
 112
 113 typedef struct
 114 {
 115     char *psz_session;
 116     int64_t i_last; /* for timeout */
 117
 118     bool b_playing; /* is it in "play" state */
 119     bool b_paused; /* is it in "pause" state */
 120
 121     int i_es;
 122     rtsp_client_es_t **es;
 123
 124 } rtsp_client_t;
 125
 126 struct media_es_t
 127 {
 128     /* VoD server */
 129     vod_t *p_vod;
 130
 131     /* RTSP server */
 132     httpd_url_t *p_rtsp_url;
 133
 134     vod_media_t *p_media;
 135
 136     es_format_t fmt;
 137     int         i_port;
 138     uint8_t     i_payload_type;
 139     char        *psz_rtpmap;
 140     char        *psz_fmtp;
 141
 142 };
 143
 144 struct vod_media_t
 145 {
 146     int id;
 147
 148     /* VoD server */
 149     vod_t *p_vod;
 150
 151     /* RTSP server */
 152     httpd_url_t  *p_rtsp_url;
 153     char         *psz_rtsp_control_v4;
 154     char         *psz_rtsp_control_v6;
 155     char         *psz_rtsp_path;
 156
 157     int  i_port;
 158     int  i_port_audio;
 159     int  i_port_video;
 160     int  i_ttl;
 161     int  i_payload_type;
 162
 163     int64_t i_sdp_id;
 164     int     i_sdp_version;
 165
 166     bool b_multicast;
 167
 168     vlc_mutex_t lock;
 169
 170     /* ES list */
 171     int        i_es;
 172     media_es_t **es;
 173     char       *psz_mux;
 174     bool  b_raw;
 175
 176     /* RTSP client */
 177     int           i_rtsp;
 178     rtsp_client_t **rtsp;
 179
 180     /* Infos */
 181     char *psz_session_name;
 182     char *psz_session_description;
 183     char *psz_session_url;
 184     char *psz_session_email;
 185     mtime_t i_length;
 186 };
 187
 188 struct vod_sys_t
 189 {
 190     /* RTSP server */
 191     httpd_host_t *p_rtsp_host;
 192     char *psz_path;
 193     int i_port;
 194     int i_throttle_users;
 195     int i_connections;
 196
 197     char *psz_raw_mux;
 198
 199     int i_session_timeout;
 200
 201     /* List of media */
 202     vlc_mutex_t lock_media;
 203     int i_media_id;
 204     int i_media;
 205     vod_media_t **media;
 206
 207     /* */
 208     block_fifo_t *p_fifo_cmd;
 209 };
 210
 211 /* rtsp delayed command (to avoid deadlock between vlm/httpd) */
 212 typedef enum
 213 {
 214     RTSP_CMD_TYPE_NONE,  /* Exit requested */
 215
 216     RTSP_CMD_TYPE_PLAY,
 217     RTSP_CMD_TYPE_PAUSE,
 218     RTSP_CMD_TYPE_STOP,
 219     RTSP_CMD_TYPE_SEEK,
 220     RTSP_CMD_TYPE_REWIND,
 221     RTSP_CMD_TYPE_FORWARD,
 222
 223     RTSP_CMD_TYPE_ADD,
 224     RTSP_CMD_TYPE_DEL,
 225 } rtsp_cmd_type_t;
 226
 227 /* */
 228 typedef struct
 229 {
 230     int i_type;
 231     int i_media_id;
 232     vod_media_t *p_media;
 233     char *psz_session;
 234     char *psz_arg;
 235     double f_arg;
 236 } rtsp_cmd_t;
 237
 238 static vod_media_t *MediaNew( vod_t *, const char *, input_item_t * );
 239 static void         MediaDel( vod_t *, vod_media_t * );
 240 static void         MediaAskDel ( vod_t *, vod_media_t * );
 241 static int          MediaAddES( vod_t *, vod_media_t *, es_format_t * );
 242 static void         MediaDelES( vod_t *, vod_media_t *, es_format_t * );
 243
 244 static void* CommandThread( vlc_object_t *p_this );
 245 static void  CommandPush( vod_t *, rtsp_cmd_type_t, vod_media_t *, const char *psz_session,
 246                           double f_arg, const char *psz_arg );
 247
 248 static rtsp_client_t *RtspClientNew( vod_media_t *, char * );
 249 static rtsp_client_t *RtspClientGet( vod_media_t *, const char * );
 250 static void           RtspClientDel( vod_media_t *, rtsp_client_t * );
 251
 252 static int RtspCallback( httpd_callback_sys_t *, httpd_client_t *,
 253                          httpd_message_t *, const httpd_message_t * );
 254 static int RtspCallbackES( httpd_callback_sys_t *, httpd_client_t *,
 255                            httpd_message_t *, const httpd_message_t * );
 256
 257 static char *SDPGenerate( const vod_media_t *, httpd_client_t *cl );
 258
 259 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
 260 {
 261     static const char hex[16] = "0123456789abcdef";
 262     int i;
 263
 264     for( i = 0; i < i_data; i++ )
 265     {
 266         s[2*i+0] = hex[(p_data[i]>>4)&0xf];
 267         s[2*i+1] = hex[(p_data[i]   )&0xf];
 268     }
 269     s[2*i_data] = '\0';
 270 }
 271
 272 /*****************************************************************************
 273  * Open: Starts the RTSP server module
 274  *****************************************************************************/
 275 static int Open( vlc_object_t *p_this )
 276 {
 277     vod_t *p_vod = (vod_t *)p_this;
 278     vod_sys_t *p_sys = NULL;
 279     char *psz_url = NULL;
 280     vlc_url_t url;
 281
 282     psz_url = config_GetPsz( p_vod, "rtsp-host" );
 283     vlc_UrlParse( &url, psz_url, 0 );
 284     free( psz_url );
 285
 286     if( url.i_port <= 0 ) url.i_port = 554;
 287
 288     p_vod->p_sys = p_sys = malloc( sizeof( vod_sys_t ) );
 289     if( !p_sys ) goto error;
 290     p_sys->p_rtsp_host = 0;
 291
 292     p_sys->i_session_timeout = var_CreateGetInteger( p_this, "rtsp-session-timeout" );
 293
 294     p_sys->i_throttle_users = var_CreateGetInteger( p_this, "rtsp-throttle-users" );
 295     msg_Dbg( p_this, "allowing up to %d connections", p_sys->i_throttle_users );
 296     p_sys->i_connections = 0;
 297
 298     p_sys->psz_raw_mux = var_CreateGetString( p_this, "rtsp-raw-mux" );
 299
 300     p_sys->p_rtsp_host =
 301         httpd_HostNew( VLC_OBJECT(p_vod), url.psz_host, url.i_port );
 302     if( !p_sys->p_rtsp_host )
 303     {
 304         msg_Err( p_vod, "cannot create RTSP server (%s:%i)",
 305                  url.psz_host, url.i_port );
 306         goto error;
 307     }
 308
 309     p_sys->psz_path = strdup( url.psz_path ? url.psz_path : "/" );
 310     p_sys->i_port = url.i_port;
 311
 312     vlc_UrlClean( &url );
 313
 314     vlc_mutex_init( &p_sys->lock_media );
 315
 316     TAB_INIT( p_sys->i_media, p_sys->media );
 317     p_sys->i_media_id = 0;
 318
 319     p_vod->pf_media_new = MediaNew;
 320     p_vod->pf_media_del = MediaAskDel;
 321     p_vod->pf_media_add_es = MediaAddES;
 322     p_vod->pf_media_del_es = MediaDelES;
 323
 324     p_sys->p_fifo_cmd = block_FifoNew();
 325     if( vlc_thread_create( p_vod, "rtsp vod thread", CommandThread,
 326                            VLC_THREAD_PRIORITY_LOW ) )
 327     {
 328         msg_Err( p_vod, "cannot spawn rtsp vod thread" );
 329         block_FifoRelease( p_sys->p_fifo_cmd );
 330         free( p_sys->psz_path );
 331         goto error;
 332     }
 333
 334     return VLC_SUCCESS;
 335
 336 error:
 337     if( p_sys )
 338     {
 339         if( p_sys->p_rtsp_host ) httpd_HostDelete( p_sys->p_rtsp_host );
 340         free( p_sys->psz_raw_mux );
 341         free( p_sys );
 342     }
 343     vlc_UrlClean( &url );
 344
 345     return VLC_EGENERIC;
 346 }
 347
 348 /*****************************************************************************
 349  * Close:
 350  *****************************************************************************/
 351 static void Close( vlc_object_t * p_this )
 352 {
 353     vod_t *p_vod = (vod_t *)p_this;
 354     vod_sys_t *p_sys = p_vod->p_sys;
 355     block_t *p_block_cmd;
 356     rtsp_cmd_t cmd;
 357
 358     /* Stop command thread */
 359     vlc_object_kill( p_vod );
 360     CommandPush( p_vod, RTSP_CMD_TYPE_NONE, NULL, NULL, 0.0, NULL );
 361     vlc_thread_join( p_vod );
 362
 363     while( block_FifoCount( p_sys->p_fifo_cmd ) > 0 )
 364     {
 365          p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 366          memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 367          block_Release( p_block_cmd );
 368          if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 369              MediaDel(p_vod, cmd.p_media);
 370          free( cmd.psz_session );
 371          free( cmd.psz_arg );
 372     }
 373     block_FifoRelease( p_sys->p_fifo_cmd );
 374
 375     httpd_HostDelete( p_sys->p_rtsp_host );
 376     var_Destroy( p_this, "rtsp-session-timeout" );
 377     var_Destroy( p_this, "rtsp-throttle-users" );
 378     var_Destroy( p_this, "rtsp-raw-mux" );
 379
 380     /* Check VLM is not buggy */
 381     if( p_sys->i_media > 0 )
 382         msg_Err( p_vod, "rtsp vod leaking %d medias", p_sys->i_media );
 383     TAB_CLEAN( p_sys->i_media, p_sys->media );
 384
 385     vlc_mutex_destroy( &p_sys->lock_media );
 386
 387     free( p_sys->psz_path );
 388     free( p_sys->psz_raw_mux );
 389     free( p_sys );
 390 }
 391
 392 /*****************************************************************************
 393  * Media handling
 394  *****************************************************************************/
 395 static vod_media_t *MediaNew( vod_t *p_vod, const char *psz_name,
 396                               input_item_t *p_item )
 397 {
 398     int i;
 399     vod_sys_t *p_sys = p_vod->p_sys;
 400
 401     vod_media_t *p_media = calloc( 1, sizeof(vod_media_t) );
 402     if( !p_media )
 403         return NULL;
 404
 405     p_media->id = p_sys->i_media_id++;
 406     TAB_INIT( p_media->i_es, p_media->es );
 407     p_media->psz_mux = NULL;
 408     TAB_INIT( p_media->i_rtsp, p_media->rtsp );
 409     p_media->b_raw = false;
 410
 411     if( asprintf( &p_media->psz_rtsp_path, "%s%s",
 412                   p_sys->psz_path, psz_name ) <0 )
 413         return NULL;
 414     p_media->p_rtsp_url =
 415         httpd_UrlNewUnique( p_sys->p_rtsp_host, p_media->psz_rtsp_path, NULL,
 416                             NULL, NULL );
 417
 418     if( !p_media->p_rtsp_url )
 419     {
 420         msg_Err( p_vod, "cannot create RTSP url (%s)", p_media->psz_rtsp_path);
 421         free( p_media->psz_rtsp_path );
 422         free( p_media );
 423         return NULL;
 424     }
 425
 426     msg_Dbg( p_vod, "created RTSP url: %s", p_media->psz_rtsp_path );
 427
 428     if( asprintf( &p_media->psz_rtsp_control_v4,
 429                "a=control:rtsp://%%s:%d%s/trackID=%%d\r\n",
 430                p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 431     {
 432         httpd_UrlDelete( p_media->p_rtsp_url );
 433         free( p_media->psz_rtsp_path );
 434         free( p_media );
 435         return NULL;
 436     }
 437     if( asprintf( &p_media->psz_rtsp_control_v6,
 438                "a=control:rtsp://[%%s]:%d%s/trackID=%%d\r\n",
 439               p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 440     {
 441         httpd_UrlDelete( p_media->p_rtsp_url );
 442         free( p_media->psz_rtsp_path );
 443         free( p_media );
 444         return NULL;
 445     }
 446
 447     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_SETUP,
 448                     RtspCallback, (void*)p_media );
 449     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_DESCRIBE,
 450                     RtspCallback, (void*)p_media );
 451     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PLAY,
 452                     RtspCallback, (void*)p_media );
 453     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PAUSE,
 454                     RtspCallback, (void*)p_media );
 455     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_GETPARAMETER,
 456                     RtspCallback, (void*)p_media );
 457     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 458                     RtspCallback, (void*)p_media );
 459
 460     p_media->p_vod = p_vod;
 461
 462     vlc_mutex_init( &p_media->lock );
 463     p_media->psz_session_name = strdup("");
 464     p_media->psz_session_description = strdup("");
 465     p_media->psz_session_url = strdup("");
 466     p_media->psz_session_email = strdup("");
 467
 468     p_media->i_port_audio = 1234;
 469     p_media->i_port_video = 1236;
 470     p_media->i_port       = 1238;
 471     p_media->i_payload_type = 96;
 472
 473     p_media->i_sdp_id = mdate();
 474     p_media->i_sdp_version = 1;
 475     p_media->i_length = input_item_GetDuration( p_item );
 476
 477     vlc_mutex_lock( &p_item->lock );
 478     msg_Dbg( p_vod, "media has %i declared ES", p_item->i_es );
 479     for( i = 0; i < p_item->i_es; i++ )
 480     {
 481         MediaAddES( p_vod, p_media, p_item->es[i] );
 482     }
 483     vlc_mutex_unlock( &p_item->lock );
 484
 485     CommandPush( p_vod, RTSP_CMD_TYPE_ADD, p_media, NULL, 0.0, NULL );
 486     return p_media;
 487 }
 488
 489 static void MediaAskDel ( vod_t *p_vod, vod_media_t *p_media )
 490 {
 491     CommandPush( p_vod, RTSP_CMD_TYPE_DEL, p_media, NULL, 0.0, NULL );
 492 }
 493
 494 static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
 495 {
 496     vod_sys_t *p_sys = p_vod->p_sys;
 497
 498     msg_Dbg( p_vod, "deleting media: %s", p_media->psz_rtsp_path );
 499
 500     vlc_mutex_lock( &p_sys->lock_media );
 501     TAB_REMOVE( p_sys->i_media, p_sys->media, p_media );
 502     vlc_mutex_unlock( &p_sys->lock_media );
 503
 504     httpd_UrlDelete( p_media->p_rtsp_url );
 505
 506     while( p_media->i_rtsp > 0 )
 507         RtspClientDel( p_media, p_media->rtsp[0] );
 508     TAB_CLEAN( p_media->i_rtsp, p_media->rtsp );
 509
 510     free( p_media->psz_rtsp_path );
 511     free( p_media->psz_rtsp_control_v6 );
 512     free( p_media->psz_rtsp_control_v4 );
 513
 514     while( p_media->i_es )
 515         MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );
 516     TAB_CLEAN( p_media->i_es, p_media->es );
 517
 518     vlc_mutex_destroy( &p_media->lock );
 519
 520     free( p_media->psz_session_name );
 521     free( p_media->psz_session_description );
 522     free( p_media->psz_session_url );
 523     free( p_media->psz_session_email );
 524     free( p_media->psz_mux );
 525     free( p_media );
 526 }
 527
 528 static int MediaAddES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt )
 529 {
 530     char *psz_urlc;
 531     media_es_t *p_es = calloc( 1, sizeof(media_es_t) );
 532     if( !p_es )
 533         return VLC_ENOMEM;
 534
 535     free( p_media->psz_mux );
 536     p_media->psz_mux = NULL;
 537
 538     /* TODO: update SDP, etc... */
 539     if( asprintf( &psz_urlc, "%s/trackID=%d",
 540               p_media->psz_rtsp_path, p_media->i_es ) < 0 )
 541     {
 542         free( p_es );
 543         return VLC_ENOMEM;
 544     }
 545     msg_Dbg( p_vod, "  - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
 546
 547     switch( p_fmt->i_codec )
 548     {
 549         case VLC_FOURCC( 's', '1', '6', 'b' ):
 550             if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
 551             {
 552                 p_es->i_payload_type = 11;
 553             }
 554             else if( p_fmt->audio.i_channels == 2 &&
 555                      p_fmt->audio.i_rate == 44100 )
 556             {
 557                 p_es->i_payload_type = 10;
 558             }
 559             else
 560             {
 561                 p_es->i_payload_type = p_media->i_payload_type++;
 562             }
 563             if( asprintf( &p_es->psz_rtpmap, "L16/%d/%d", p_fmt->audio.i_rate,
 564                           p_fmt->audio.i_channels ) == -1 )
 565                 p_es->psz_rtpmap = NULL;
 566             break;
 567         case VLC_FOURCC( 'u', '8', ' ', ' ' ):
 568             p_es->i_payload_type = p_media->i_payload_type++;
 569             if( asprintf( &p_es->psz_rtpmap, "L8/%d/%d", p_fmt->audio.i_rate,
 570                           p_fmt->audio.i_channels ) == -1 )
 571                 p_es->psz_rtpmap = NULL;
 572             break;
 573         case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
 574         case VLC_FOURCC( 'm', 'p', '3', ' ' ):
 575             p_es->i_payload_type = 14;
 576             p_es->psz_rtpmap = strdup( "MPA/90000" );
 577             break;
 578         case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
 579             p_es->i_payload_type = 32;
 580             p_es->psz_rtpmap = strdup( "MPV/90000" );
 581             break;
 582         case VLC_FOURCC( 'a', '5', '2', ' ' ):
 583             p_es->i_payload_type = p_media->i_payload_type++;
 584             if( asprintf( &p_es->psz_rtpmap, "ac3/%d", p_fmt->audio.i_rate ) == -1 )
 585                 p_es->psz_rtpmap = NULL;
 586             break;
 587         case VLC_FOURCC( 'H', '2', '6', '3' ):
 588             p_es->i_payload_type = p_media->i_payload_type++;
 589             p_es->psz_rtpmap = strdup( "H263-1998/90000" );
 590             break;
 591         case VLC_FOURCC( 'h', '2', '6', '4' ):
 592             p_es->i_payload_type = p_media->i_payload_type++;
 593             p_es->psz_rtpmap = strdup( "H264/90000" );
 594             p_es->psz_fmtp = NULL;
 595             /* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
 596             if( p_fmt->i_extra > 0 )
 597             {
 598                 uint8_t *p_buffer = p_fmt->p_extra;
 599                 int     i_buffer = p_fmt->i_extra;
 600                 char    *p_64_sps = NULL;
 601                 char    *p_64_pps = NULL;
 602                 char    hexa[6+1];
 603
 604                 while( i_buffer > 4 &&
 605                        p_buffer[0] == 0 && p_buffer[1] == 0 &&
 606                        p_buffer[2] == 0 && p_buffer[3] == 1 )
 607                 {
 608                     const int i_nal_type = p_buffer[4]&0x1f;
 609                     int i_offset;
 610                     int i_size      = 0;
 611
 612                     i_size = i_buffer;
 613                     for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
 614                     {
 615                         if( p_buffer[i_offset] == 0 && p_buffer[i_offset+1] == 0 && p_buffer[i_offset+2] == 0 && p_buffer[i_offset+3] == 1 )
 616                         {
 617                             /* we found another startcode */
 618                             i_size = i_offset;
 619                             break;
 620                         }
 621                     }
 622                     if( i_nal_type == 7 )
 623                     {
 624                         free( p_64_sps );
 625                         p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 626                         sprintf_hexa( hexa, &p_buffer[5], 3 );
 627                     }
 628                     else if( i_nal_type == 8 )
 629                     {
 630                         free( p_64_pps );
 631                         p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 632                     }
 633                     i_buffer -= i_size;
 634                     p_buffer += i_size;
 635                 }
 636                 /* */
 637                 if( p_64_sps && p_64_pps )
 638                 {
 639                     if( asprintf( &p_es->psz_fmtp,
 640                                   "packetization-mode=1;profile-level-id=%s;"
 641                                   "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
 642                                   p_64_pps ) < 0 )
 643                     {
 644                         free( p_64_sps );
 645                         free( p_64_pps );
 646                         free( psz_urlc );
 647                         free( p_es );
 648                         return VLC_ENOMEM;
 649                     }
 650                 }
 651                 free( p_64_sps );
 652                 free( p_64_pps );
 653             }
 654             if( !p_es->psz_fmtp )
 655                 p_es->psz_fmtp = strdup( "packetization-mode=1" );
 656             break;
 657         case VLC_FOURCC( 'm', 'p', '4', 'v' ):
 658             p_es->i_payload_type = p_media->i_payload_type++;
 659             p_es->psz_rtpmap = strdup( "MP4V-ES/90000" );
 660             if( p_fmt->i_extra > 0 )
 661             {
 662                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 663                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 664                 if( asprintf( &p_es->psz_fmtp,
 665                               "profile-level-id=3; config=%s;", p_hexa ) == -1 )
 666                     p_es->psz_fmtp = NULL;
 667                 free( p_hexa );
 668             }
 669             break;
 670         case VLC_FOURCC( 'm', 'p', '4', 'a' ):
 671             p_es->i_payload_type = p_media->i_payload_type++;
 672             if( asprintf( &p_es->psz_rtpmap, "mpeg4-generic/%d", p_fmt->audio.i_rate ) == -1 )
 673                 p_es->psz_rtpmap = NULL;
 674             if( p_fmt->i_extra > 0 )
 675             {
 676                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 677                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 678                 if( asprintf( &p_es->psz_fmtp,
 679                               "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
 680                               "config=%s; SizeLength=13;IndexLength=3; "
 681                               "IndexDeltaLength=3; Profile=1;", p_hexa ) == -1 )
 682                     p_es->psz_fmtp = NULL;
 683                 free( p_hexa );
 684             }
 685             break;
 686         case VLC_FOURCC( 'm', 'p', '2', 't' ):
 687             p_media->psz_mux = strdup("ts");
 688             p_es->i_payload_type = 33;
 689             p_es->psz_rtpmap = strdup( "MP2T/90000" );
 690             break;
 691         case VLC_FOURCC( 'm', 'p', '2', 'p' ):
 692             p_media->psz_mux = strdup("ps");
 693             p_es->i_payload_type = p_media->i_payload_type++;
 694             p_es->psz_rtpmap = strdup( "MP2P/90000" );
 695             break;
 696         case VLC_FOURCC( 's', 'a', 'm', 'r' ):
 697             p_es->i_payload_type = p_media->i_payload_type++;
 698             p_es->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
 699                                     "AMR/8000/2" : "AMR/8000" );
 700             p_es->psz_fmtp = strdup( "octet-align=1" );
 701             break;
 702         case VLC_FOURCC( 's', 'a', 'w', 'b' ):
 703             p_es->i_payload_type = p_media->i_payload_type++;
 704             p_es->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
 705                                     "AMR-WB/16000/2" : "AMR-WB/16000" );
 706             p_es->psz_fmtp = strdup( "octet-align=1" );
 707             break;
 708
 709         default:
 710             msg_Err( p_vod, "cannot add this stream (unsupported "
 711                     "codec: %4.4s)", (char*)&p_fmt->i_codec );
 712             free( psz_urlc );
 713             free( p_es );
 714             return VLC_EGENERIC;
 715     }
 716
 717     p_es->p_rtsp_url =
 718         httpd_UrlNewUnique( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL,
 719                             NULL );
 720
 721     if( !p_es->p_rtsp_url )
 722     {
 723         msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
 724         free( psz_urlc );
 725         free( p_es );
 726         return VLC_EGENERIC;
 727     }
 728     free( psz_urlc );
 729
 730     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
 731                     RtspCallbackES, (void*)p_es );
 732     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 733                     RtspCallbackES, (void*)p_es );
 734     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
 735                     RtspCallbackES, (void*)p_es );
 736     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
 737                     RtspCallbackES, (void*)p_es );
 738
 739     es_format_Copy( &p_es->fmt, p_fmt );
 740     p_es->p_vod = p_vod;
 741     p_es->p_media = p_media;
 742
 743 #if 0
 744     /* Choose the port */
 745     if( p_fmt->i_cat == AUDIO_ES && p_media->i_port_audio > 0 )
 746     {
 747         p_es->i_port = p_media->i_port_audio;
 748         p_media->i_port_audio = 0;
 749     }
 750     else if( p_fmt->i_cat == VIDEO_ES && p_media->i_port_video > 0 )
 751     {
 752         p_es->i_port = p_media->i_port_video;
 753         p_media->i_port_video = 0;
 754     }
 755     while( !p_es->i_port )
 756     {
 757         if( p_media->i_port != p_media->i_port_audio &&
 758             p_media->i_port != p_media->i_port_video )
 759         {
 760             p_es->i_port = p_media->i_port;
 761             p_media->i_port += 2;
 762             break;
 763         }
 764         p_media->i_port += 2;
 765     }
 766 #else
 767
 768     p_es->i_port = 0;
 769 #endif
 770
 771     vlc_mutex_lock( &p_media->lock );
 772     TAB_APPEND( p_media->i_es, p_media->es, p_es );
 773     vlc_mutex_unlock( &p_media->lock );
 774
 775     p_media->i_sdp_version++;
 776
 777     return VLC_SUCCESS;
 778 }
 779
 780 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
 781 {
 782     media_es_t *p_es = NULL;
 783     int i;
 784
 785     /* Find the ES */
 786     for( i = 0; i < p_media->i_es; i++ )
 787     {
 788         if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
 789             p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
 790             p_media->es[i]->fmt.i_id == p_fmt->i_id )
 791         {
 792             p_es = p_media->es[i];
 793         }
 794     }
 795     if( !p_es ) return;
 796
 797     msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );
 798
 799     vlc_mutex_lock( &p_media->lock );
 800     TAB_REMOVE( p_media->i_es, p_media->es, p_es );
 801     vlc_mutex_unlock( &p_media->lock );
 802
 803     free( p_es->psz_rtpmap );
 804     free( p_es->psz_fmtp );
 805     p_media->i_sdp_version++;
 806
 807     if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
 808     es_format_Clean( &p_es->fmt );
 809     free( p_es );
 810 }
 811
 812 static void CommandPush( vod_t *p_vod, rtsp_cmd_type_t i_type, vod_media_t *p_media, const char *psz_session,
 813                          double f_arg, const char *psz_arg )
 814 {
 815     rtsp_cmd_t cmd;
 816     block_t *p_cmd;
 817
 818     memset( &cmd, 0, sizeof(cmd) );
 819     cmd.i_type = i_type;
 820     cmd.p_media = p_media;
 821     if( p_media )
 822         cmd.i_media_id = p_media->id;
 823     if( psz_session )
 824         cmd.psz_session = strdup(psz_session);
 825     cmd.f_arg = f_arg;
 826     if( psz_arg )
 827         cmd.psz_arg = strdup(psz_arg);
 828
 829     p_cmd = block_New( p_vod, sizeof(rtsp_cmd_t) );
 830     memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
 831
 832     block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
 833 }
 834
 835 static void* CommandThread( vlc_object_t *p_this )
 836 {
 837     vod_t *p_vod = (vod_t*)p_this;
 838     vod_sys_t *p_sys = p_vod->p_sys;
 839     int canc = vlc_savecancel ();
 840
 841     while( vlc_object_alive (p_vod) )
 842     {
 843         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 844         rtsp_cmd_t cmd;
 845         vod_media_t *p_media = NULL;
 846         int i;
 847
 848         if( !p_block_cmd )
 849             break;
 850
 851         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 852         block_Release( p_block_cmd );
 853
 854         if( cmd.i_type == RTSP_CMD_TYPE_NONE )
 855             break;
 856
 857         if ( cmd.i_type == RTSP_CMD_TYPE_ADD )
 858         {
 859             vlc_mutex_lock( &p_sys->lock_media );
 860             TAB_APPEND( p_sys->i_media, p_sys->media, cmd.p_media );
 861             vlc_mutex_unlock( &p_sys->lock_media );
 862             goto next;
 863         }
 864
 865         if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 866         {
 867             MediaDel(p_vod, cmd.p_media);
 868             goto next;
 869         }
 870
 871         /* */
 872         vlc_mutex_lock( &p_sys->lock_media );
 873         for( i = 0; i < p_sys->i_media; i++ )
 874         {
 875             if( p_sys->media[i]->id == cmd.i_media_id )
 876                 break;
 877         }
 878         if( i >= p_sys->i_media )
 879         {
 880             vlc_mutex_unlock( &p_sys->lock_media );
 881             goto next;
 882         }
 883         p_media = p_sys->media[i];
 884
 885         switch( cmd.i_type )
 886         {
 887         case RTSP_CMD_TYPE_PLAY:
 888             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 889                               VOD_MEDIA_PLAY, cmd.psz_arg );
 890             break;
 891         case RTSP_CMD_TYPE_PAUSE:
 892             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 893                               VOD_MEDIA_PAUSE );
 894             break;
 895
 896         case RTSP_CMD_TYPE_STOP:
 897             vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
 898             break;
 899
 900         case RTSP_CMD_TYPE_SEEK:
 901             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 902                               VOD_MEDIA_SEEK, cmd.f_arg );
 903             break;
 904
 905         case RTSP_CMD_TYPE_REWIND:
 906             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 907                               VOD_MEDIA_REWIND, cmd.f_arg );
 908             break;
 909
 910         case RTSP_CMD_TYPE_FORWARD:
 911             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 912                               VOD_MEDIA_FORWARD, cmd.f_arg );
 913             break;
 914
 915         default:
 916             break;
 917         }
 918         vlc_mutex_unlock( &p_sys->lock_media );
 919
 920     next:
 921         free( cmd.psz_session );
 922         free( cmd.psz_arg );
 923     }
 924
 925     vlc_restorecancel (canc);
 926     return NULL;
 927 }
 928
 929 /****************************************************************************
 930  * RTSP server implementation
 931  ****************************************************************************/
 932 static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
 933 {
 934     rtsp_client_t *p_rtsp = calloc( 1, sizeof(rtsp_client_t) );
 935
 936     if( !p_rtsp )
 937         return NULL;
 938     p_rtsp->es = 0;
 939
 940     p_rtsp->psz_session = psz_session;
 941     TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 942
 943     p_media->p_vod->p_sys->i_connections++;
 944     msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
 945              psz_session, p_media->p_vod->p_sys->i_throttle_users );
 946
 947     return p_rtsp;
 948 }
 949
 950 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
 951 {
 952     int i;
 953
 954     for( i = 0; psz_session && i < p_media->i_rtsp; i++ )
 955     {
 956         if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
 957             return p_media->rtsp[i];
 958     }
 959
 960     return NULL;
 961 }
 962
 963 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
 964 {
 965     p_media->p_vod->p_sys->i_connections--;
 966     msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
 967              p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
 968
 969     while( p_rtsp->i_es )
 970     {
 971         p_rtsp->i_es--;
 972         free( p_rtsp->es[p_rtsp->i_es]->psz_ip );
 973         free( p_rtsp->es[p_rtsp->i_es] );
 974     }
 975     free( p_rtsp->es );
 976
 977     TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 978
 979     free( p_rtsp->psz_session );
 980     free( p_rtsp );
 981 }
 982
 983
 984 static float ParseNPT (const char *str)
 985 {
 986      locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
 987      locale_t oldloc = uselocale (loc);
 988      unsigned hour, min;
 989      float sec;
 990
 991      if (sscanf (str, "%u:%u:%f", &hour, &min, &sec) == 3)
 992          sec += ((hour * 60) + min) * 60;
 993      else
 994      if (sscanf (str, "%f", &sec) != 1)
 995          sec = 0.;
 996
 997      if (loc != (locale_t)0)
 998      {
 999          uselocale (oldloc);
1000          freelocale (loc);
1001      }
1002      return sec;
1003 }
1004
1005
1006 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1007                          httpd_message_t *answer, const httpd_message_t *query )
1008 {
1009     vod_media_t *p_media = (vod_media_t*)p_args;
1010     vod_t *p_vod = p_media->p_vod;
1011     const char *psz_transport = NULL;
1012     const char *psz_playnow = NULL; /* support option: x-playNow */
1013     const char *psz_session = NULL;
1014     const char *psz_cseq = NULL;
1015     rtsp_client_t *p_rtsp;
1016     int i_port = 0;
1017     int i_cseq = 0;
1018
1019     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1020
1021     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1022
1023     answer->i_proto   = HTTPD_PROTO_RTSP;
1024     answer->i_version = query->i_version;
1025     answer->i_type    = HTTPD_MSG_ANSWER;
1026     answer->i_body    = 0;
1027     answer->p_body    = NULL;
1028
1029     switch( query->i_type )
1030     {
1031         case HTTPD_MSG_SETUP:
1032         {
1033             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1034             psz_transport = httpd_MsgGet( query, "Transport" );
1035             if( psz_transport == NULL )
1036             {
1037                 answer->i_status = 400;
1038                 break;
1039             }
1040             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1041
1042             if( strstr( psz_transport, "unicast" ) &&
1043                 strstr( psz_transport, "client_port=" ) )
1044             {
1045                 rtsp_client_t *p_rtsp = NULL;
1046                 char ip[NI_MAXNUMERICHOST];
1047                 i_port = atoi( strstr( psz_transport, "client_port=" ) +
1048                                 strlen("client_port=") );
1049
1050                 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
1051                     strstr( psz_transport, "RAW/RAW/UDP" ) )
1052                 {
1053                     free( p_media->psz_mux );
1054                     p_media->psz_mux = NULL;
1055                     p_media->psz_mux = strdup( p_vod->p_sys->psz_raw_mux );
1056                     p_media->b_raw = true;
1057                 }
1058
1059                 if( httpd_ClientIP( cl, ip ) == NULL )
1060                 {
1061                     answer->i_status = 500;
1062                     answer->i_body = 0;
1063                     answer->p_body = NULL;
1064                     break;
1065                 }
1066
1067                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1068                          ip, i_port );
1069
1070                 psz_session = httpd_MsgGet( query, "Session" );
1071                 if( !psz_session || !*psz_session )
1072                 {
1073                     char *psz_new;
1074                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1075                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1076                     {
1077                         answer->i_status = 503;
1078                         answer->i_body = 0;
1079                         answer->p_body = NULL;
1080                         break;
1081                     }
1082                     if( asprintf( &psz_new, "%d", rand() ) < 0 )
1083                         return VLC_ENOMEM;
1084                     psz_session = psz_new;
1085
1086                     p_rtsp = RtspClientNew( p_media, psz_new );
1087                     if( !p_rtsp )
1088                     {
1089                         answer->i_status = 454;
1090                         answer->i_body = 0;
1091                         answer->p_body = NULL;
1092                         break;
1093                     }
1094                 }
1095                 else
1096                 {
1097                     p_rtsp = RtspClientGet( p_media, psz_session );
1098                     if( !p_rtsp )
1099                     {
1100                         answer->i_status = 454;
1101                         answer->i_body = 0;
1102                         answer->p_body = NULL;
1103                         break;
1104                     }
1105                 }
1106
1107                 answer->i_status = 200;
1108                 answer->i_body = 0;
1109                 answer->p_body = NULL;
1110
1111                 if( p_media->b_raw )
1112                 {
1113                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1114                     {
1115                         httpd_MsgAdd( answer, "Transport",
1116                                       "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1117                                       i_port, i_port + 1 );
1118                     }
1119                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1120                     {
1121                         httpd_MsgAdd( answer, "Transport",
1122                                       "RAW/RAW/UDP;unicast;client_port=%d-%d",
1123                                       i_port, i_port + 1 );
1124                     }
1125                 }
1126                 else
1127                     httpd_MsgAdd( answer, "Transport",
1128                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1129                                   i_port, i_port + 1 );
1130             }
1131             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1132             {
1133                 answer->i_status = 461;
1134                 answer->i_body = 0;
1135                 answer->p_body = NULL;
1136             }
1137
1138             /* Intentional fall-through on x-playNow option in RTSP request */
1139             if( !psz_playnow )
1140                 break;
1141         }
1142
1143         case HTTPD_MSG_PLAY:
1144         {
1145             char *psz_output, ip[NI_MAXNUMERICHOST];
1146             int i, i_port_audio = 0, i_port_video = 0;
1147
1148             /* for now only multicast so easy */
1149             if( !psz_playnow )
1150             {
1151                 answer->i_status = 200;
1152                 answer->i_body = 0;
1153                 answer->p_body = NULL;
1154             }
1155
1156             if( !psz_session )
1157                 psz_session = httpd_MsgGet( query, "Session" );
1158             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1159
1160             p_rtsp = RtspClientGet( p_media, psz_session );
1161             if( !p_rtsp )
1162             {
1163                 answer->i_status = 500;
1164                 answer->i_body = 0;
1165                 answer->p_body = NULL;
1166                 break;
1167             }
1168
1169             if( p_rtsp->b_playing )
1170             {
1171                 const char *psz_position = httpd_MsgGet( query, "Range" );
1172                 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1173                 if( psz_position )
1174                     psz_position = strstr( psz_position, "npt=" );
1175                 if( psz_position && !psz_scale )
1176                 {
1177                     double f_pos = ParseNPT (psz_position + 4);
1178                     msg_Dbg( p_vod, "seeking request: %s", psz_position );
1179                     f_pos /= ((double)(p_media->i_length))/1000 /1000 / 100;
1180                     CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1181                                  psz_session, f_pos, NULL );
1182                     break;
1183                 }
1184                 if( psz_scale )
1185                 {
1186                     double f_scale = 0.0;
1187                     char *end;
1188
1189                     f_scale = us_strtod( psz_scale, &end );
1190                     if( end > psz_scale )
1191                     {
1192                         f_scale = (f_scale * 30.0);
1193                         if( psz_scale[0] == '-' ) /* rewind */
1194                         {
1195                             msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1196                             CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
1197                                          psz_session, f_scale, NULL );
1198                         }
1199                         else if(psz_scale[0] != '1' ) /* fast-forward */
1200                         {
1201                             msg_Dbg( p_vod, "fastforward request: %s",
1202                                      psz_scale );
1203                             CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
1204                                          psz_session, f_scale, NULL );
1205                         }
1206
1207                         if( p_rtsp->b_paused == true )
1208                         {
1209                             p_rtsp->b_paused = false;
1210                             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1211                                          psz_session, 0, NULL );
1212                         }
1213                     }
1214                     break;
1215                 }
1216             }
1217
1218             if( p_rtsp->b_playing && p_rtsp->b_paused )
1219             {
1220                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1221                              psz_session, 0, NULL );
1222                 p_rtsp->b_paused = false;
1223                 break;
1224             }
1225             else if( p_rtsp->b_playing ) break;
1226
1227             if( httpd_ClientIP( cl, ip ) == NULL ) break;
1228
1229             p_rtsp->b_playing = true;
1230
1231             /* FIXME for != 1 video and 1 audio */
1232             for( i = 0; i < p_rtsp->i_es; i++ )
1233             {
1234                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1235                     i_port_audio = p_rtsp->es[i]->i_port;
1236                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1237                     i_port_video = p_rtsp->es[i]->i_port;
1238             }
1239
1240             if( p_media->psz_mux )
1241             {
1242                 if( p_media->b_raw )
1243                 {
1244                     if( asprintf( &psz_output,
1245                               "std{access=udp,dst=%s:%i,mux=%s}",
1246                               ip, i_port, p_media->psz_mux ) < 0 )
1247                         return VLC_ENOMEM;
1248                 }
1249                 else
1250                 {
1251                     if( asprintf( &psz_output,
1252                               "rtp{dst=%s,port=%i,mux=%s}",
1253                               ip, i_port_video, p_media->psz_mux ) < 0 )
1254                         return VLC_ENOMEM;
1255                 }
1256             }
1257             else
1258             {
1259                 if( asprintf( &psz_output,
1260                               "rtp{dst=%s,port-video=%i,port-audio=%i}",
1261                               ip, i_port_video, i_port_audio ) < 0 )
1262                     return VLC_ENOMEM;
1263             }
1264
1265             CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1266                          0, psz_output );
1267             free( psz_output );
1268             break;
1269         }
1270
1271         case HTTPD_MSG_DESCRIBE:
1272         {
1273             char *psz_sdp =
1274                 SDPGenerate( p_media, cl );
1275
1276             if( psz_sdp != NULL )
1277             {
1278                 answer->i_status = 200;
1279                 httpd_MsgAdd( answer, "Content-type",  "%s",
1280                               "application/sdp" );
1281
1282                 answer->p_body = (uint8_t *)psz_sdp;
1283                 answer->i_body = strlen( psz_sdp );
1284             }
1285             else
1286             {
1287                 answer->i_status = 500;
1288                 answer->p_body = NULL;
1289                 answer->i_body = 0;
1290             }
1291             break;
1292         }
1293
1294         case HTTPD_MSG_PAUSE:
1295             psz_session = httpd_MsgGet( query, "Session" );
1296             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1297
1298             p_rtsp = RtspClientGet( p_media, psz_session );
1299             if( !p_rtsp ) break;
1300
1301             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1302                          0, NULL );
1303             p_rtsp->b_paused = true;
1304
1305             answer->i_status = 200;
1306             answer->i_body = 0;
1307             answer->p_body = NULL;
1308             break;
1309
1310         case HTTPD_MSG_TEARDOWN:
1311             /* for now only multicast so easy again */
1312             answer->i_status = 200;
1313             answer->i_body = 0;
1314             answer->p_body = NULL;
1315
1316             psz_session = httpd_MsgGet( query, "Session" );
1317             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1318
1319             p_rtsp = RtspClientGet( p_media, psz_session );
1320             if( !p_rtsp ) break;
1321
1322             CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1323                          0, NULL );
1324             RtspClientDel( p_media, p_rtsp );
1325             break;
1326
1327         case HTTPD_MSG_GETPARAMETER:
1328             answer->i_status = 200;
1329             answer->i_body = 0;
1330             answer->p_body = NULL;
1331             break;
1332
1333         default:
1334             return VLC_EGENERIC;
1335     }
1336
1337     httpd_MsgAdd( answer, "Server", "VLC Server" );
1338     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1339     psz_cseq = httpd_MsgGet( query, "Cseq" );
1340     psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1341     httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1342     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1343
1344     if( psz_session )
1345     {
1346          if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
1347              httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1348                p_media->p_vod->p_sys->i_session_timeout );
1349          else
1350               httpd_MsgAdd( answer, "Session", "%s", psz_session );
1351     }
1352
1353     return VLC_SUCCESS;
1354 }
1355
1356 static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1357                            httpd_message_t *answer,
1358                            const httpd_message_t *query )
1359 {
1360     media_es_t *p_es = (media_es_t*)p_args;
1361     vod_media_t *p_media = p_es->p_media;
1362     vod_t *p_vod = p_media->p_vod;
1363     rtsp_client_t *p_rtsp = NULL;
1364     const char *psz_transport = NULL;
1365     const char *psz_playnow = NULL; /* support option: x-playNow */
1366     const char *psz_session = NULL;
1367     const char *psz_position = NULL;
1368     const char *psz_cseq = NULL;
1369     int i_cseq = 0;
1370     int i;
1371
1372     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1373
1374     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1375
1376     answer->i_proto   = HTTPD_PROTO_RTSP;
1377     answer->i_version = query->i_version;
1378     answer->i_type    = HTTPD_MSG_ANSWER;
1379     answer->i_body    = 0;
1380     answer->p_body      = NULL;
1381
1382     switch( query->i_type )
1383     {
1384         case HTTPD_MSG_SETUP:
1385             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1386             psz_transport = httpd_MsgGet( query, "Transport" );
1387
1388             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1389
1390             if( strstr( psz_transport, "unicast" ) &&
1391                 strstr( psz_transport, "client_port=" ) )
1392             {
1393                 rtsp_client_t *p_rtsp = NULL;
1394                 rtsp_client_es_t *p_rtsp_es = NULL;
1395                 char ip[NI_MAXNUMERICHOST];
1396                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
1397                                    strlen("client_port=") );
1398
1399                 if( httpd_ClientIP( cl, ip ) == NULL )
1400                 {
1401                     answer->i_status = 500;
1402                     answer->i_body = 0;
1403                     answer->p_body = NULL;
1404                     break;
1405                 }
1406
1407                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1408                         ip, i_port );
1409
1410                 psz_session = httpd_MsgGet( query, "Session" );
1411                 if( !psz_session || !*psz_session )
1412                 {
1413                     char *psz_new;
1414                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1415                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1416                     {
1417                         answer->i_status = 503;
1418                         answer->i_body = 0;
1419                         answer->p_body = NULL;
1420                         break;
1421                     }
1422                     if( asprintf( &psz_new, "%d", rand() ) < 0 )
1423                         return VLC_ENOMEM;
1424                     psz_session = psz_new;
1425
1426                     p_rtsp = RtspClientNew( p_media, psz_new );
1427                 }
1428                 else
1429                 {
1430                     p_rtsp = RtspClientGet( p_media, psz_session );
1431                     if( !p_rtsp )
1432                     {
1433                         answer->i_status = 454;
1434                         answer->i_body = 0;
1435                         answer->p_body = NULL;
1436                         break;
1437                     }
1438                 }
1439
1440                 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1441                 if( !p_rtsp_es )
1442                 {
1443                     answer->i_status = 500;
1444                     answer->i_body = 0;
1445                     answer->p_body = NULL;
1446                     break;
1447                 }
1448                 p_rtsp_es->i_port = i_port;
1449                 p_rtsp_es->psz_ip = strdup( ip );
1450                 p_rtsp_es->p_media_es = p_es;
1451                 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1452
1453                 answer->i_status = 200;
1454                 answer->i_body = 0;
1455                 answer->p_body = NULL;
1456
1457                 if( p_media->b_raw )
1458                 {
1459                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1460                     {
1461                         httpd_MsgAdd( answer, "Transport",
1462                                      "MP2T/H2221/UDP;client_port=%d-%d",
1463                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1464                     }
1465                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1466                     {
1467                         httpd_MsgAdd( answer, "Transport",
1468                                      "RAW/RAW/UDP;client_port=%d-%d",
1469                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1470                     }
1471                 }
1472                 else
1473                 {
1474                     httpd_MsgAdd( answer, "Transport",
1475                                   "RTP/AVP/UDP;client_port=%d-%d",
1476                                   p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1477                 }
1478             }
1479             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1480             {
1481                 answer->i_status = 461;
1482                 answer->i_body = 0;
1483                 answer->p_body = NULL;
1484             }
1485
1486             /* Intentional fall-through on x-playNow option in RTSP request */
1487             if( !psz_playnow )
1488                 break;
1489
1490         case HTTPD_MSG_PLAY:
1491             /* This is kind of a kludge. Should we only support Aggregate
1492              * Operations ? */
1493             psz_session = httpd_MsgGet( query, "Session" );
1494             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1495
1496             p_rtsp = RtspClientGet( p_media, psz_session );
1497
1498             psz_position = httpd_MsgGet( query, "Range" );
1499             if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1500             if( psz_position )
1501             {
1502                 double f_pos = ParseNPT (psz_position + 4);
1503                 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1504                 f_pos /= ((double)(p_media->i_length))/1000 /1000 / 100;
1505                 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1506                              psz_session, f_pos, NULL );
1507             }
1508
1509             if( !psz_playnow )
1510             {
1511                 answer->i_status = 200;
1512                 answer->i_body = 0;
1513                 answer->p_body = NULL;
1514             }
1515             break;
1516
1517         case HTTPD_MSG_TEARDOWN:
1518             answer->i_status = 200;
1519             answer->i_body = 0;
1520             answer->p_body = NULL;
1521
1522             psz_session = httpd_MsgGet( query, "Session" );
1523             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1524
1525             p_rtsp = RtspClientGet( p_media, psz_session );
1526             if( !p_rtsp ) break;
1527
1528             for( i = 0; i < p_rtsp->i_es; i++ )
1529             {
1530                 if( p_rtsp->es[i]->p_media_es == p_es )
1531                 {
1532                     free( p_rtsp->es[i]->psz_ip );
1533                     TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, p_rtsp->es[i] );
1534                     break;
1535                 }
1536             }
1537
1538             if( !p_rtsp->i_es )
1539             {
1540                 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1541                              0, NULL );
1542                 RtspClientDel( p_media, p_rtsp );
1543             }
1544             break;
1545
1546         case HTTPD_MSG_PAUSE:
1547             /* This is kind of a kludge. Should we only support Aggregate
1548              * Operations ? */
1549             psz_session = httpd_MsgGet( query, "Session" );
1550             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1551
1552             p_rtsp = RtspClientGet( p_media, psz_session );
1553             if( !p_rtsp ) break;
1554
1555             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1556                          0, NULL );
1557             p_rtsp->b_paused = true;
1558
1559             answer->i_status = 200;
1560             answer->i_body = 0;
1561             answer->p_body = NULL;
1562             break;
1563
1564         default:
1565             return VLC_EGENERIC;
1566             break;
1567     }
1568
1569     httpd_MsgAdd( answer, "Server", "VLC Server" );
1570     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1571     psz_cseq = httpd_MsgGet( query, "Cseq" );
1572     if (psz_cseq)
1573         i_cseq = atoi( psz_cseq );
1574     else
1575         i_cseq = 0;
1576     httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1577     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1578
1579     if( psz_session )
1580         httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1581
1582     return VLC_SUCCESS;
1583 }
1584
1585 /*****************************************************************************
1586  * SDPGenerate: TODO
1587  * FIXME: need to be moved to a common place ?
1588  *****************************************************************************/
1589 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1590 {
1591     int i, i_size;
1592     char *p, *psz_sdp, ip[NI_MAXNUMERICHOST], ipv;
1593     const char *psz_control;
1594
1595     if( httpd_ServerIP( cl, ip ) == NULL )
1596         return NULL;
1597
1598     p = strchr( ip, '%' );
1599     if( p != NULL )
1600         *p = '\0'; /* remove scope if present */
1601
1602     ipv = ( strchr( ip, ':' ) != NULL ) ? '6' : '4';
1603
1604     /* Calculate size */
1605     i_size = sizeof( "v=0\r\n" ) +
1606         sizeof( "o=- * * IN IP4 \r\n" ) + 10 + NI_MAXNUMERICHOST +
1607         sizeof( "s=*\r\n" ) + strlen( p_media->psz_session_name ) +
1608         sizeof( "i=*\r\n" ) + strlen( p_media->psz_session_description ) +
1609         sizeof( "u=*\r\n" ) + strlen( p_media->psz_session_url ) +
1610         sizeof( "e=*\r\n" ) + strlen( p_media->psz_session_email ) +
1611         sizeof( "c=IN IP4 0.0.0.0\r\n" ) + 20 + 10 +
1612         sizeof( "t=0 0\r\n" ) + /* FIXME */
1613         sizeof( "a=tool:"PACKAGE_STRING"\r\n" ) +
1614         sizeof( "a=range:npt=0-1000000000.000\r\n" );
1615
1616     psz_control = (ipv == '6') ? p_media->psz_rtsp_control_v6
1617                                : p_media->psz_rtsp_control_v4;
1618     for( i = 0; i < p_media->i_es; i++ )
1619     {
1620         media_es_t *p_es = p_media->es[i];
1621
1622         i_size += sizeof( "m=**d*o * RTP/AVP *\r\n" ) + 19;
1623         if( p_es->psz_rtpmap )
1624         {
1625             i_size += sizeof( "a=rtpmap:* *\r\n" ) +
1626                 strlen( p_es->psz_rtpmap ) + 9;
1627         }
1628         if( p_es->psz_fmtp )
1629         {
1630             i_size += sizeof( "a=fmtp:* *\r\n" ) +
1631                 strlen( p_es->psz_fmtp ) + 9;
1632         }
1633     }
1634     i_size += (strlen( psz_control ) + strlen( ip ) + 9) * p_media->i_es;
1635
1636     p = psz_sdp = malloc( i_size );
1637     p += sprintf( p, "v=0\r\n" );
1638     p += sprintf( p, "o=- %"PRId64" %d IN IP%c %s\r\n",
1639                   p_media->i_sdp_id, p_media->i_sdp_version, ipv, ip );
1640     if( *p_media->psz_session_name )
1641         p += sprintf( p, "s=%s\r\n", p_media->psz_session_name );
1642     if( *p_media->psz_session_description )
1643         p += sprintf( p, "i=%s\r\n", p_media->psz_session_description );
1644     if( *p_media->psz_session_url )
1645         p += sprintf( p, "u=%s\r\n", p_media->psz_session_url );
1646     if( *p_media->psz_session_email )
1647         p += sprintf( p, "e=%s\r\n", p_media->psz_session_email );
1648
1649     p += sprintf( p, "c=IN IP%c %s\r\n", ipv, ipv == '6' ? "::" : "0.0.0.0" );
1650     p += sprintf( p, "t=0 0\r\n" ); /* FIXME */
1651     p += sprintf( p, "a=tool:"PACKAGE_STRING"\r\n" );
1652
1653     if( p_media->i_length > 0 )
1654     {
1655         lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
1656         p += sprintf( p, "a=range:npt=0-%lld.%03u\r\n", d.quot,
1657                       (unsigned)d.rem );
1658     }
1659
1660     for( i = 0; i < p_media->i_es; i++ )
1661     {
1662         media_es_t *p_es = p_media->es[i];
1663
1664         if( p_es->fmt.i_cat == AUDIO_ES )
1665         {
1666             p += sprintf( p, "m=audio %d RTP/AVP %d\r\n",
1667                           p_es->i_port, p_es->i_payload_type );
1668         }
1669         else if( p_es->fmt.i_cat == VIDEO_ES )
1670         {
1671             p += sprintf( p, "m=video %d RTP/AVP %d\r\n",
1672                           p_es->i_port, p_es->i_payload_type );
1673         }
1674         else
1675         {
1676             continue;
1677         }
1678
1679         if( p_es->psz_rtpmap )
1680         {
1681             p += sprintf( p, "a=rtpmap:%d %s\r\n", p_es->i_payload_type,
1682                           p_es->psz_rtpmap );
1683         }
1684         if( p_es->psz_fmtp )
1685         {
1686             p += sprintf( p, "a=fmtp:%d %s\r\n", p_es->i_payload_type,
1687                           p_es->psz_fmtp );
1688         }
1689
1690         p += sprintf( p, psz_control, ip, i );
1691     }
1692
1693     return psz_sdp;
1694 }