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_CODEC_S16B:
 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_CODEC_U8:
 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_CODEC_MPGA:
 574             p_es->i_payload_type = 14;
 575             p_es->psz_rtpmap = strdup( "MPA/90000" );
 576             break;
 577         case VLC_CODEC_MPGV:
 578             p_es->i_payload_type = 32;
 579             p_es->psz_rtpmap = strdup( "MPV/90000" );
 580             break;
 581         case VLC_CODEC_A52:
 582             p_es->i_payload_type = p_media->i_payload_type++;
 583             if( asprintf( &p_es->psz_rtpmap, "ac3/%d", p_fmt->audio.i_rate ) == -1 )
 584                 p_es->psz_rtpmap = NULL;
 585             break;
 586         case VLC_CODEC_H263:
 587             p_es->i_payload_type = p_media->i_payload_type++;
 588             p_es->psz_rtpmap = strdup( "H263-1998/90000" );
 589             break;
 590         case VLC_CODEC_H264:
 591             p_es->i_payload_type = p_media->i_payload_type++;
 592             p_es->psz_rtpmap = strdup( "H264/90000" );
 593             p_es->psz_fmtp = NULL;
 594             /* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
 595             if( p_fmt->i_extra > 0 )
 596             {
 597                 uint8_t *p_buffer = p_fmt->p_extra;
 598                 int     i_buffer = p_fmt->i_extra;
 599                 char    *p_64_sps = NULL;
 600                 char    *p_64_pps = NULL;
 601                 char    hexa[6+1];
 602
 603                 while( i_buffer > 4 &&
 604                        p_buffer[0] == 0 && p_buffer[1] == 0 &&
 605                        p_buffer[2] == 0 && p_buffer[3] == 1 )
 606                 {
 607                     const int i_nal_type = p_buffer[4]&0x1f;
 608                     int i_offset;
 609                     int i_size      = 0;
 610
 611                     i_size = i_buffer;
 612                     for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
 613                     {
 614                         if( p_buffer[i_offset] == 0 && p_buffer[i_offset+1] == 0 && p_buffer[i_offset+2] == 0 && p_buffer[i_offset+3] == 1 )
 615                         {
 616                             /* we found another startcode */
 617                             i_size = i_offset;
 618                             break;
 619                         }
 620                     }
 621                     if( i_nal_type == 7 )
 622                     {
 623                         free( p_64_sps );
 624                         p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 625                         sprintf_hexa( hexa, &p_buffer[5], 3 );
 626                     }
 627                     else if( i_nal_type == 8 )
 628                     {
 629                         free( p_64_pps );
 630                         p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 631                     }
 632                     i_buffer -= i_size;
 633                     p_buffer += i_size;
 634                 }
 635                 /* */
 636                 if( p_64_sps && p_64_pps )
 637                 {
 638                     if( asprintf( &p_es->psz_fmtp,
 639                                   "packetization-mode=1;profile-level-id=%s;"
 640                                   "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
 641                                   p_64_pps ) < 0 )
 642                     {
 643                         free( p_64_sps );
 644                         free( p_64_pps );
 645                         free( psz_urlc );
 646                         free( p_es );
 647                         return VLC_ENOMEM;
 648                     }
 649                 }
 650                 free( p_64_sps );
 651                 free( p_64_pps );
 652             }
 653             if( !p_es->psz_fmtp )
 654                 p_es->psz_fmtp = strdup( "packetization-mode=1" );
 655             break;
 656         case VLC_CODEC_MP4V:
 657             p_es->i_payload_type = p_media->i_payload_type++;
 658             p_es->psz_rtpmap = strdup( "MP4V-ES/90000" );
 659             if( p_fmt->i_extra > 0 )
 660             {
 661                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 662                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 663                 if( asprintf( &p_es->psz_fmtp,
 664                               "profile-level-id=3; config=%s;", p_hexa ) == -1 )
 665                     p_es->psz_fmtp = NULL;
 666                 free( p_hexa );
 667             }
 668             break;
 669         case VLC_CODEC_MP4A:
 670             p_es->i_payload_type = p_media->i_payload_type++;
 671             if( asprintf( &p_es->psz_rtpmap, "mpeg4-generic/%d", p_fmt->audio.i_rate ) == -1 )
 672                 p_es->psz_rtpmap = NULL;
 673             if( p_fmt->i_extra > 0 )
 674             {
 675                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 676                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 677                 if( asprintf( &p_es->psz_fmtp,
 678                               "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
 679                               "config=%s; SizeLength=13;IndexLength=3; "
 680                               "IndexDeltaLength=3; Profile=1;", p_hexa ) == -1 )
 681                     p_es->psz_fmtp = NULL;
 682                 free( p_hexa );
 683             }
 684             break;
 685         case VLC_FOURCC( 'm', 'p', '2', 't' ):
 686             p_media->psz_mux = strdup("ts");
 687             p_es->i_payload_type = 33;
 688             p_es->psz_rtpmap = strdup( "MP2T/90000" );
 689             break;
 690         case VLC_FOURCC( 'm', 'p', '2', 'p' ):
 691             p_media->psz_mux = strdup("ps");
 692             p_es->i_payload_type = p_media->i_payload_type++;
 693             p_es->psz_rtpmap = strdup( "MP2P/90000" );
 694             break;
 695         case VLC_CODEC_AMR_NB:
 696             p_es->i_payload_type = p_media->i_payload_type++;
 697             p_es->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
 698                                     "AMR/8000/2" : "AMR/8000" );
 699             p_es->psz_fmtp = strdup( "octet-align=1" );
 700             break;
 701         case VLC_CODEC_AMR_WB:
 702             p_es->i_payload_type = p_media->i_payload_type++;
 703             p_es->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
 704                                     "AMR-WB/16000/2" : "AMR-WB/16000" );
 705             p_es->psz_fmtp = strdup( "octet-align=1" );
 706             break;
 707
 708         default:
 709             msg_Err( p_vod, "cannot add this stream (unsupported "
 710                     "codec: %4.4s)", (char*)&p_fmt->i_codec );
 711             free( psz_urlc );
 712             free( p_es );
 713             return VLC_EGENERIC;
 714     }
 715
 716     p_es->p_rtsp_url =
 717         httpd_UrlNewUnique( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL,
 718                             NULL );
 719
 720     if( !p_es->p_rtsp_url )
 721     {
 722         msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
 723         free( psz_urlc );
 724         free( p_es );
 725         return VLC_EGENERIC;
 726     }
 727     free( psz_urlc );
 728
 729     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
 730                     RtspCallbackES, (void*)p_es );
 731     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 732                     RtspCallbackES, (void*)p_es );
 733     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
 734                     RtspCallbackES, (void*)p_es );
 735     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
 736                     RtspCallbackES, (void*)p_es );
 737
 738     es_format_Copy( &p_es->fmt, p_fmt );
 739     p_es->p_vod = p_vod;
 740     p_es->p_media = p_media;
 741
 742 #if 0
 743     /* Choose the port */
 744     if( p_fmt->i_cat == AUDIO_ES && p_media->i_port_audio > 0 )
 745     {
 746         p_es->i_port = p_media->i_port_audio;
 747         p_media->i_port_audio = 0;
 748     }
 749     else if( p_fmt->i_cat == VIDEO_ES && p_media->i_port_video > 0 )
 750     {
 751         p_es->i_port = p_media->i_port_video;
 752         p_media->i_port_video = 0;
 753     }
 754     while( !p_es->i_port )
 755     {
 756         if( p_media->i_port != p_media->i_port_audio &&
 757             p_media->i_port != p_media->i_port_video )
 758         {
 759             p_es->i_port = p_media->i_port;
 760             p_media->i_port += 2;
 761             break;
 762         }
 763         p_media->i_port += 2;
 764     }
 765 #else
 766
 767     p_es->i_port = 0;
 768 #endif
 769
 770     vlc_mutex_lock( &p_media->lock );
 771     TAB_APPEND( p_media->i_es, p_media->es, p_es );
 772     vlc_mutex_unlock( &p_media->lock );
 773
 774     p_media->i_sdp_version++;
 775
 776     return VLC_SUCCESS;
 777 }
 778
 779 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
 780 {
 781     media_es_t *p_es = NULL;
 782     int i;
 783
 784     /* Find the ES */
 785     for( i = 0; i < p_media->i_es; i++ )
 786     {
 787         if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
 788             p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
 789             p_media->es[i]->fmt.i_id == p_fmt->i_id )
 790         {
 791             p_es = p_media->es[i];
 792         }
 793     }
 794     if( !p_es ) return;
 795
 796     msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );
 797
 798     vlc_mutex_lock( &p_media->lock );
 799     TAB_REMOVE( p_media->i_es, p_media->es, p_es );
 800     vlc_mutex_unlock( &p_media->lock );
 801
 802     free( p_es->psz_rtpmap );
 803     free( p_es->psz_fmtp );
 804     p_media->i_sdp_version++;
 805
 806     if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
 807     es_format_Clean( &p_es->fmt );
 808     free( p_es );
 809 }
 810
 811 static void CommandPush( vod_t *p_vod, rtsp_cmd_type_t i_type, vod_media_t *p_media, const char *psz_session,
 812                          double f_arg, const char *psz_arg )
 813 {
 814     rtsp_cmd_t cmd;
 815     block_t *p_cmd;
 816
 817     memset( &cmd, 0, sizeof(cmd) );
 818     cmd.i_type = i_type;
 819     cmd.p_media = p_media;
 820     if( p_media )
 821         cmd.i_media_id = p_media->id;
 822     if( psz_session )
 823         cmd.psz_session = strdup(psz_session);
 824     cmd.f_arg = f_arg;
 825     if( psz_arg )
 826         cmd.psz_arg = strdup(psz_arg);
 827
 828     p_cmd = block_New( p_vod, sizeof(rtsp_cmd_t) );
 829     memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
 830
 831     block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
 832 }
 833
 834 static void* CommandThread( vlc_object_t *p_this )
 835 {
 836     vod_t *p_vod = (vod_t*)p_this;
 837     vod_sys_t *p_sys = p_vod->p_sys;
 838     int canc = vlc_savecancel ();
 839
 840     while( vlc_object_alive (p_vod) )
 841     {
 842         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 843         rtsp_cmd_t cmd;
 844         vod_media_t *p_media = NULL;
 845         int i;
 846
 847         if( !p_block_cmd )
 848             break;
 849
 850         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 851         block_Release( p_block_cmd );
 852
 853         if( cmd.i_type == RTSP_CMD_TYPE_NONE )
 854             break;
 855
 856         if ( cmd.i_type == RTSP_CMD_TYPE_ADD )
 857         {
 858             vlc_mutex_lock( &p_sys->lock_media );
 859             TAB_APPEND( p_sys->i_media, p_sys->media, cmd.p_media );
 860             vlc_mutex_unlock( &p_sys->lock_media );
 861             goto next;
 862         }
 863
 864         if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 865         {
 866             MediaDel(p_vod, cmd.p_media);
 867             goto next;
 868         }
 869
 870         /* */
 871         vlc_mutex_lock( &p_sys->lock_media );
 872         for( i = 0; i < p_sys->i_media; i++ )
 873         {
 874             if( p_sys->media[i]->id == cmd.i_media_id )
 875                 break;
 876         }
 877         if( i >= p_sys->i_media )
 878         {
 879             vlc_mutex_unlock( &p_sys->lock_media );
 880             goto next;
 881         }
 882         p_media = p_sys->media[i];
 883
 884         switch( cmd.i_type )
 885         {
 886         case RTSP_CMD_TYPE_PLAY:
 887             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 888                               VOD_MEDIA_PLAY, cmd.psz_arg );
 889             break;
 890         case RTSP_CMD_TYPE_PAUSE:
 891             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 892                               VOD_MEDIA_PAUSE );
 893             break;
 894
 895         case RTSP_CMD_TYPE_STOP:
 896             vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
 897             break;
 898
 899         case RTSP_CMD_TYPE_SEEK:
 900             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 901                               VOD_MEDIA_SEEK, cmd.f_arg );
 902             break;
 903
 904         case RTSP_CMD_TYPE_REWIND:
 905             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 906                               VOD_MEDIA_REWIND, cmd.f_arg );
 907             break;
 908
 909         case RTSP_CMD_TYPE_FORWARD:
 910             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 911                               VOD_MEDIA_FORWARD, cmd.f_arg );
 912             break;
 913
 914         default:
 915             break;
 916         }
 917         vlc_mutex_unlock( &p_sys->lock_media );
 918
 919     next:
 920         free( cmd.psz_session );
 921         free( cmd.psz_arg );
 922     }
 923
 924     vlc_restorecancel (canc);
 925     return NULL;
 926 }
 927
 928 /****************************************************************************
 929  * RTSP server implementation
 930  ****************************************************************************/
 931 static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
 932 {
 933     rtsp_client_t *p_rtsp = calloc( 1, sizeof(rtsp_client_t) );
 934
 935     if( !p_rtsp )
 936         return NULL;
 937     p_rtsp->es = 0;
 938
 939     p_rtsp->psz_session = psz_session;
 940     TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 941
 942     p_media->p_vod->p_sys->i_connections++;
 943     msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
 944              psz_session, p_media->p_vod->p_sys->i_throttle_users );
 945
 946     return p_rtsp;
 947 }
 948
 949 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
 950 {
 951     int i;
 952
 953     for( i = 0; psz_session && i < p_media->i_rtsp; i++ )
 954     {
 955         if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
 956             return p_media->rtsp[i];
 957     }
 958
 959     return NULL;
 960 }
 961
 962 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
 963 {
 964     p_media->p_vod->p_sys->i_connections--;
 965     msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
 966              p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
 967
 968     while( p_rtsp->i_es )
 969     {
 970         p_rtsp->i_es--;
 971         free( p_rtsp->es[p_rtsp->i_es]->psz_ip );
 972         free( p_rtsp->es[p_rtsp->i_es] );
 973     }
 974     free( p_rtsp->es );
 975
 976     TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 977
 978     free( p_rtsp->psz_session );
 979     free( p_rtsp );
 980 }
 981
 982
 983 static float ParseNPT (const char *str)
 984 {
 985      locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
 986      locale_t oldloc = uselocale (loc);
 987      unsigned hour, min;
 988      float sec;
 989
 990      if (sscanf (str, "%u:%u:%f", &hour, &min, &sec) == 3)
 991          sec += ((hour * 60) + min) * 60;
 992      else
 993      if (sscanf (str, "%f", &sec) != 1)
 994          sec = 0.;
 995
 996      if (loc != (locale_t)0)
 997      {
 998          uselocale (oldloc);
 999          freelocale (loc);
1000      }
1001      return sec;
1002 }
1003
1004
1005 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1006                          httpd_message_t *answer, const httpd_message_t *query )
1007 {
1008     vod_media_t *p_media = (vod_media_t*)p_args;
1009     vod_t *p_vod = p_media->p_vod;
1010     const char *psz_transport = NULL;
1011     const char *psz_playnow = NULL; /* support option: x-playNow */
1012     const char *psz_session = NULL;
1013     const char *psz_cseq = NULL;
1014     rtsp_client_t *p_rtsp;
1015     int i_port = 0;
1016     int i_cseq = 0;
1017
1018     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1019
1020     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1021
1022     answer->i_proto   = HTTPD_PROTO_RTSP;
1023     answer->i_version = query->i_version;
1024     answer->i_type    = HTTPD_MSG_ANSWER;
1025     answer->i_body    = 0;
1026     answer->p_body    = NULL;
1027
1028     switch( query->i_type )
1029     {
1030         case HTTPD_MSG_SETUP:
1031         {
1032             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1033             psz_transport = httpd_MsgGet( query, "Transport" );
1034             if( psz_transport == NULL )
1035             {
1036                 answer->i_status = 400;
1037                 break;
1038             }
1039             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1040
1041             if( strstr( psz_transport, "unicast" ) &&
1042                 strstr( psz_transport, "client_port=" ) )
1043             {
1044                 rtsp_client_t *p_rtsp = NULL;
1045                 char ip[NI_MAXNUMERICHOST];
1046                 i_port = atoi( strstr( psz_transport, "client_port=" ) +
1047                                 strlen("client_port=") );
1048
1049                 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
1050                     strstr( psz_transport, "RAW/RAW/UDP" ) )
1051                 {
1052                     free( p_media->psz_mux );
1053                     p_media->psz_mux = NULL;
1054                     p_media->psz_mux = strdup( p_vod->p_sys->psz_raw_mux );
1055                     p_media->b_raw = true;
1056                 }
1057
1058                 if( httpd_ClientIP( cl, ip ) == NULL )
1059                 {
1060                     answer->i_status = 500;
1061                     answer->i_body = 0;
1062                     answer->p_body = NULL;
1063                     break;
1064                 }
1065
1066                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1067                          ip, i_port );
1068
1069                 psz_session = httpd_MsgGet( query, "Session" );
1070                 if( !psz_session || !*psz_session )
1071                 {
1072                     char *psz_new;
1073                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1074                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1075                     {
1076                         answer->i_status = 503;
1077                         answer->i_body = 0;
1078                         answer->p_body = NULL;
1079                         break;
1080                     }
1081                     if( asprintf( &psz_new, "%d", rand() ) < 0 )
1082                         return VLC_ENOMEM;
1083                     psz_session = psz_new;
1084
1085                     p_rtsp = RtspClientNew( p_media, psz_new );
1086                     if( !p_rtsp )
1087                     {
1088                         answer->i_status = 454;
1089                         answer->i_body = 0;
1090                         answer->p_body = NULL;
1091                         break;
1092                     }
1093                 }
1094                 else
1095                 {
1096                     p_rtsp = RtspClientGet( p_media, psz_session );
1097                     if( !p_rtsp )
1098                     {
1099                         answer->i_status = 454;
1100                         answer->i_body = 0;
1101                         answer->p_body = NULL;
1102                         break;
1103                     }
1104                 }
1105
1106                 answer->i_status = 200;
1107                 answer->i_body = 0;
1108                 answer->p_body = NULL;
1109
1110                 if( p_media->b_raw )
1111                 {
1112                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1113                     {
1114                         httpd_MsgAdd( answer, "Transport",
1115                                       "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1116                                       i_port, i_port + 1 );
1117                     }
1118                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1119                     {
1120                         httpd_MsgAdd( answer, "Transport",
1121                                       "RAW/RAW/UDP;unicast;client_port=%d-%d",
1122                                       i_port, i_port + 1 );
1123                     }
1124                 }
1125                 else
1126                     httpd_MsgAdd( answer, "Transport",
1127                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1128                                   i_port, i_port + 1 );
1129             }
1130             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1131             {
1132                 answer->i_status = 461;
1133                 answer->i_body = 0;
1134                 answer->p_body = NULL;
1135             }
1136
1137             /* Intentional fall-through on x-playNow option in RTSP request */
1138             if( !psz_playnow )
1139                 break;
1140         }
1141
1142         case HTTPD_MSG_PLAY:
1143         {
1144             char *psz_output, ip[NI_MAXNUMERICHOST];
1145             int i, i_port_audio = 0, i_port_video = 0;
1146
1147             /* for now only multicast so easy */
1148             if( !psz_playnow )
1149             {
1150                 answer->i_status = 200;
1151                 answer->i_body = 0;
1152                 answer->p_body = NULL;
1153             }
1154
1155             if( !psz_session )
1156                 psz_session = httpd_MsgGet( query, "Session" );
1157             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1158
1159             p_rtsp = RtspClientGet( p_media, psz_session );
1160             if( !p_rtsp )
1161             {
1162                 answer->i_status = 500;
1163                 answer->i_body = 0;
1164                 answer->p_body = NULL;
1165                 break;
1166             }
1167
1168             if( p_rtsp->b_playing )
1169             {
1170                 const char *psz_position = httpd_MsgGet( query, "Range" );
1171                 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1172                 if( psz_position )
1173                     psz_position = strstr( psz_position, "npt=" );
1174                 if( psz_position && !psz_scale )
1175                 {
1176                     double f_pos = ParseNPT (psz_position + 4);
1177                     msg_Dbg( p_vod, "seeking request: %s", psz_position );
1178                     f_pos /= ((double)(p_media->i_length))/1000 /1000 / 100;
1179                     CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1180                                  psz_session, f_pos, NULL );
1181                 }
1182                 else if( psz_scale )
1183                 {
1184                     double f_scale = 0.0;
1185                     char *end;
1186
1187                     f_scale = us_strtod( psz_scale, &end );
1188                     if( end > psz_scale )
1189                     {
1190                         f_scale = (f_scale * 30.0);
1191                         if( psz_scale[0] == '-' ) /* rewind */
1192                         {
1193                             msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1194                             CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
1195                                          psz_session, f_scale, NULL );
1196                         }
1197                         else if(psz_scale[0] != '1' ) /* fast-forward */
1198                         {
1199                             msg_Dbg( p_vod, "fastforward request: %s",
1200                                      psz_scale );
1201                             CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
1202                                          psz_session, f_scale, NULL );
1203                         }
1204
1205                         if( p_rtsp->b_paused == true )
1206                         {
1207                             p_rtsp->b_paused = false;
1208                             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1209                                          psz_session, 0, NULL );
1210                         }
1211                     }
1212                     break;
1213                 }
1214             }
1215
1216             if( p_rtsp->b_playing && p_rtsp->b_paused )
1217             {
1218                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1219                              psz_session, 0, NULL );
1220                 p_rtsp->b_paused = false;
1221                 break;
1222             }
1223             else if( p_rtsp->b_playing ) break;
1224
1225             if( httpd_ClientIP( cl, ip ) == NULL ) break;
1226
1227             p_rtsp->b_playing = true;
1228
1229             /* FIXME for != 1 video and 1 audio */
1230             for( i = 0; i < p_rtsp->i_es; i++ )
1231             {
1232                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1233                     i_port_audio = p_rtsp->es[i]->i_port;
1234                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1235                     i_port_video = p_rtsp->es[i]->i_port;
1236             }
1237
1238             if( p_media->psz_mux )
1239             {
1240                 if( p_media->b_raw )
1241                 {
1242                     if( asprintf( &psz_output,
1243                               "std{access=udp,dst=%s:%i,mux=%s}",
1244                               ip, i_port, p_media->psz_mux ) < 0 )
1245                         return VLC_ENOMEM;
1246                 }
1247                 else
1248                 {
1249                     if( asprintf( &psz_output,
1250                               "rtp{dst=%s,port=%i,mux=%s}",
1251                               ip, i_port_video, p_media->psz_mux ) < 0 )
1252                         return VLC_ENOMEM;
1253                 }
1254             }
1255             else
1256             {
1257                 if( asprintf( &psz_output,
1258                               "rtp{dst=%s,port-video=%i,port-audio=%i}",
1259                               ip, i_port_video, i_port_audio ) < 0 )
1260                     return VLC_ENOMEM;
1261             }
1262
1263             CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1264                          0, psz_output );
1265             free( psz_output );
1266             break;
1267         }
1268
1269         case HTTPD_MSG_DESCRIBE:
1270         {
1271             char *psz_sdp =
1272                 SDPGenerate( p_media, cl );
1273
1274             if( psz_sdp != NULL )
1275             {
1276                 answer->i_status = 200;
1277                 httpd_MsgAdd( answer, "Content-type",  "%s",
1278                               "application/sdp" );
1279
1280                 answer->p_body = (uint8_t *)psz_sdp;
1281                 answer->i_body = strlen( psz_sdp );
1282             }
1283             else
1284             {
1285                 answer->i_status = 500;
1286                 answer->p_body = NULL;
1287                 answer->i_body = 0;
1288             }
1289             break;
1290         }
1291
1292         case HTTPD_MSG_PAUSE:
1293             psz_session = httpd_MsgGet( query, "Session" );
1294             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1295
1296             p_rtsp = RtspClientGet( p_media, psz_session );
1297             if( !p_rtsp ) break;
1298
1299             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1300                          0, NULL );
1301             p_rtsp->b_paused = true;
1302
1303             answer->i_status = 200;
1304             answer->i_body = 0;
1305             answer->p_body = NULL;
1306             break;
1307
1308         case HTTPD_MSG_TEARDOWN:
1309             /* for now only multicast so easy again */
1310             answer->i_status = 200;
1311             answer->i_body = 0;
1312             answer->p_body = NULL;
1313
1314             psz_session = httpd_MsgGet( query, "Session" );
1315             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1316
1317             p_rtsp = RtspClientGet( p_media, psz_session );
1318             if( !p_rtsp ) break;
1319
1320             CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1321                          0, NULL );
1322             RtspClientDel( p_media, p_rtsp );
1323             break;
1324
1325         case HTTPD_MSG_GETPARAMETER:
1326             answer->i_status = 200;
1327             answer->i_body = 0;
1328             answer->p_body = NULL;
1329             break;
1330
1331         default:
1332             return VLC_EGENERIC;
1333     }
1334
1335     httpd_MsgAdd( answer, "Server", "VLC Server" );
1336     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1337     psz_cseq = httpd_MsgGet( query, "Cseq" );
1338     psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1339     httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1340     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1341
1342     if( psz_session )
1343     {
1344          if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
1345              httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1346                p_media->p_vod->p_sys->i_session_timeout );
1347          else
1348               httpd_MsgAdd( answer, "Session", "%s", psz_session );
1349     }
1350
1351     return VLC_SUCCESS;
1352 }
1353
1354 static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1355                            httpd_message_t *answer,
1356                            const httpd_message_t *query )
1357 {
1358     media_es_t *p_es = (media_es_t*)p_args;
1359     vod_media_t *p_media = p_es->p_media;
1360     vod_t *p_vod = p_media->p_vod;
1361     rtsp_client_t *p_rtsp = NULL;
1362     const char *psz_transport = NULL;
1363     const char *psz_playnow = NULL; /* support option: x-playNow */
1364     const char *psz_session = NULL;
1365     const char *psz_position = NULL;
1366     const char *psz_cseq = NULL;
1367     int i_cseq = 0;
1368     int i;
1369
1370     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1371
1372     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1373
1374     answer->i_proto   = HTTPD_PROTO_RTSP;
1375     answer->i_version = query->i_version;
1376     answer->i_type    = HTTPD_MSG_ANSWER;
1377     answer->i_body    = 0;
1378     answer->p_body      = NULL;
1379
1380     switch( query->i_type )
1381     {
1382         case HTTPD_MSG_SETUP:
1383             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1384             psz_transport = httpd_MsgGet( query, "Transport" );
1385
1386             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1387
1388             if( strstr( psz_transport, "unicast" ) &&
1389                 strstr( psz_transport, "client_port=" ) )
1390             {
1391                 rtsp_client_t *p_rtsp = NULL;
1392                 rtsp_client_es_t *p_rtsp_es = NULL;
1393                 char ip[NI_MAXNUMERICHOST];
1394                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
1395                                    strlen("client_port=") );
1396
1397                 if( httpd_ClientIP( cl, ip ) == NULL )
1398                 {
1399                     answer->i_status = 500;
1400                     answer->i_body = 0;
1401                     answer->p_body = NULL;
1402                     break;
1403                 }
1404
1405                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1406                         ip, i_port );
1407
1408                 psz_session = httpd_MsgGet( query, "Session" );
1409                 if( !psz_session || !*psz_session )
1410                 {
1411                     char *psz_new;
1412                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1413                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1414                     {
1415                         answer->i_status = 503;
1416                         answer->i_body = 0;
1417                         answer->p_body = NULL;
1418                         break;
1419                     }
1420                     if( asprintf( &psz_new, "%d", rand() ) < 0 )
1421                         return VLC_ENOMEM;
1422                     psz_session = psz_new;
1423
1424                     p_rtsp = RtspClientNew( p_media, psz_new );
1425                     if( !p_rtsp )
1426                     {
1427                         answer->i_status = 454;
1428                         answer->i_body = 0;
1429                         answer->p_body = NULL;
1430                         break;
1431                     }
1432                 }
1433                 else
1434                 {
1435                     p_rtsp = RtspClientGet( p_media, psz_session );
1436                     if( !p_rtsp )
1437                     {
1438                         answer->i_status = 454;
1439                         answer->i_body = 0;
1440                         answer->p_body = NULL;
1441                         break;
1442                     }
1443                 }
1444
1445                 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1446                 if( !p_rtsp_es )
1447                 {
1448                     answer->i_status = 500;
1449                     answer->i_body = 0;
1450                     answer->p_body = NULL;
1451                     break;
1452                 }
1453                 p_rtsp_es->i_port = i_port;
1454                 p_rtsp_es->psz_ip = strdup( ip );
1455                 p_rtsp_es->p_media_es = p_es;
1456                 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1457
1458                 answer->i_status = 200;
1459                 answer->i_body = 0;
1460                 answer->p_body = NULL;
1461
1462                 if( p_media->b_raw )
1463                 {
1464                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1465                     {
1466                         httpd_MsgAdd( answer, "Transport",
1467                                      "MP2T/H2221/UDP;client_port=%d-%d",
1468                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1469                     }
1470                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1471                     {
1472                         httpd_MsgAdd( answer, "Transport",
1473                                      "RAW/RAW/UDP;client_port=%d-%d",
1474                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1475                     }
1476                 }
1477                 else
1478                 {
1479                     httpd_MsgAdd( answer, "Transport",
1480                                   "RTP/AVP/UDP;client_port=%d-%d",
1481                                   p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1482                 }
1483             }
1484             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1485             {
1486                 answer->i_status = 461;
1487                 answer->i_body = 0;
1488                 answer->p_body = NULL;
1489             }
1490
1491             /* Intentional fall-through on x-playNow option in RTSP request */
1492             if( !psz_playnow )
1493                 break;
1494
1495         case HTTPD_MSG_PLAY:
1496             /* This is kind of a kludge. Should we only support Aggregate
1497              * Operations ? */
1498             psz_session = httpd_MsgGet( query, "Session" );
1499             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1500
1501             p_rtsp = RtspClientGet( p_media, psz_session );
1502
1503             psz_position = httpd_MsgGet( query, "Range" );
1504             if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1505             if( psz_position )
1506             {
1507                 double f_pos = ParseNPT (psz_position + 4);
1508                 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1509                 f_pos /= ((double)(p_media->i_length))/1000 /1000 / 100;
1510                 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1511                              psz_session, f_pos, NULL );
1512             }
1513
1514             if( !psz_playnow )
1515             {
1516                 answer->i_status = 200;
1517                 answer->i_body = 0;
1518                 answer->p_body = NULL;
1519             }
1520             break;
1521
1522         case HTTPD_MSG_TEARDOWN:
1523             answer->i_status = 200;
1524             answer->i_body = 0;
1525             answer->p_body = NULL;
1526
1527             psz_session = httpd_MsgGet( query, "Session" );
1528             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1529
1530             p_rtsp = RtspClientGet( p_media, psz_session );
1531             if( !p_rtsp ) break;
1532
1533             for( i = 0; i < p_rtsp->i_es; i++ )
1534             {
1535                 if( p_rtsp->es[i]->p_media_es == p_es )
1536                 {
1537                     free( p_rtsp->es[i]->psz_ip );
1538                     TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, p_rtsp->es[i] );
1539                     break;
1540                 }
1541             }
1542
1543             if( !p_rtsp->i_es )
1544             {
1545                 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1546                              0, NULL );
1547                 RtspClientDel( p_media, p_rtsp );
1548             }
1549             break;
1550
1551         case HTTPD_MSG_PAUSE:
1552             /* This is kind of a kludge. Should we only support Aggregate
1553              * Operations ? */
1554             psz_session = httpd_MsgGet( query, "Session" );
1555             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1556
1557             p_rtsp = RtspClientGet( p_media, psz_session );
1558             if( !p_rtsp ) break;
1559
1560             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1561                          0, NULL );
1562             p_rtsp->b_paused = true;
1563
1564             answer->i_status = 200;
1565             answer->i_body = 0;
1566             answer->p_body = NULL;
1567             break;
1568
1569         default:
1570             return VLC_EGENERIC;
1571             break;
1572     }
1573
1574     httpd_MsgAdd( answer, "Server", "VLC Server" );
1575     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1576     psz_cseq = httpd_MsgGet( query, "Cseq" );
1577     if (psz_cseq)
1578         i_cseq = atoi( psz_cseq );
1579     else
1580         i_cseq = 0;
1581     httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1582     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1583
1584     if( psz_session )
1585         httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1586
1587     return VLC_SUCCESS;
1588 }
1589
1590 /*****************************************************************************
1591  * SDPGenerate: TODO
1592  * FIXME: need to be moved to a common place ?
1593  *****************************************************************************/
1594 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1595 {
1596     int i, i_size;
1597     char *p, *psz_sdp, ip[NI_MAXNUMERICHOST], ipv;
1598     const char *psz_control;
1599
1600     if( httpd_ServerIP( cl, ip ) == NULL )
1601         return NULL;
1602
1603     p = strchr( ip, '%' );
1604     if( p != NULL )
1605         *p = '\0'; /* remove scope if present */
1606
1607     ipv = ( strchr( ip, ':' ) != NULL ) ? '6' : '4';
1608
1609     /* Calculate size */
1610     i_size = sizeof( "v=0\r\n" ) +
1611         sizeof( "o=- * * IN IP4 \r\n" ) + 10 + NI_MAXNUMERICHOST +
1612         sizeof( "s=*\r\n" ) + strlen( p_media->psz_session_name ) +
1613         sizeof( "i=*\r\n" ) + strlen( p_media->psz_session_description ) +
1614         sizeof( "u=*\r\n" ) + strlen( p_media->psz_session_url ) +
1615         sizeof( "e=*\r\n" ) + strlen( p_media->psz_session_email ) +
1616         sizeof( "c=IN IP4 0.0.0.0\r\n" ) + 20 + 10 +
1617         sizeof( "t=0 0\r\n" ) + /* FIXME */
1618         sizeof( "a=tool:"PACKAGE_STRING"\r\n" ) +
1619         sizeof( "a=range:npt=0-1000000000.000\r\n" );
1620
1621     psz_control = (ipv == '6') ? p_media->psz_rtsp_control_v6
1622                                : p_media->psz_rtsp_control_v4;
1623     for( i = 0; i < p_media->i_es; i++ )
1624     {
1625         media_es_t *p_es = p_media->es[i];
1626
1627         i_size += sizeof( "m=**d*o * RTP/AVP *\r\n" ) + 19;
1628         if( p_es->psz_rtpmap )
1629         {
1630             i_size += sizeof( "a=rtpmap:* *\r\n" ) +
1631                 strlen( p_es->psz_rtpmap ) + 9;
1632         }
1633         if( p_es->psz_fmtp )
1634         {
1635             i_size += sizeof( "a=fmtp:* *\r\n" ) +
1636                 strlen( p_es->psz_fmtp ) + 9;
1637         }
1638     }
1639     i_size += (strlen( psz_control ) + strlen( ip ) + 9) * p_media->i_es;
1640
1641     p = psz_sdp = malloc( i_size );
1642     p += sprintf( p, "v=0\r\n" );
1643     p += sprintf( p, "o=- %"PRId64" %d IN IP%c %s\r\n",
1644                   p_media->i_sdp_id, p_media->i_sdp_version, ipv, ip );
1645     if( *p_media->psz_session_name )
1646         p += sprintf( p, "s=%s\r\n", p_media->psz_session_name );
1647     if( *p_media->psz_session_description )
1648         p += sprintf( p, "i=%s\r\n", p_media->psz_session_description );
1649     if( *p_media->psz_session_url )
1650         p += sprintf( p, "u=%s\r\n", p_media->psz_session_url );
1651     if( *p_media->psz_session_email )
1652         p += sprintf( p, "e=%s\r\n", p_media->psz_session_email );
1653
1654     p += sprintf( p, "c=IN IP%c %s\r\n", ipv, ipv == '6' ? "::" : "0.0.0.0" );
1655     p += sprintf( p, "t=0 0\r\n" ); /* FIXME */
1656     p += sprintf( p, "a=tool:"PACKAGE_STRING"\r\n" );
1657
1658     if( p_media->i_length > 0 )
1659     {
1660         lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
1661         p += sprintf( p, "a=range:npt=0-%lld.%03u\r\n", d.quot,
1662                       (unsigned)d.rem );
1663     }
1664
1665     for( i = 0; i < p_media->i_es; i++ )
1666     {
1667         media_es_t *p_es = p_media->es[i];
1668
1669         if( p_es->fmt.i_cat == AUDIO_ES )
1670         {
1671             p += sprintf( p, "m=audio %d RTP/AVP %d\r\n",
1672                           p_es->i_port, p_es->i_payload_type );
1673         }
1674         else if( p_es->fmt.i_cat == VIDEO_ES )
1675         {
1676             p += sprintf( p, "m=video %d RTP/AVP %d\r\n",
1677                           p_es->i_port, p_es->i_payload_type );
1678         }
1679         else
1680         {
1681             continue;
1682         }
1683
1684         if( p_es->psz_rtpmap )
1685         {
1686             p += sprintf( p, "a=rtpmap:%d %s\r\n", p_es->i_payload_type,
1687                           p_es->psz_rtpmap );
1688         }
1689         if( p_es->psz_fmtp )
1690         {
1691             p += sprintf( p, "a=fmtp:%d %s\r\n", p_es->i_payload_type,
1692                           p_es->psz_fmtp );
1693         }
1694
1695         p += sprintf( p, psz_control, ip, i );
1696     }
1697
1698     return psz_sdp;
1699 }