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