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     char *psz_ip;
 109     int i_port;
 110
 111 } rtsp_client_es_t;
 112
 113 typedef struct
 114 {
 115     char *psz_session;
 116
 117     bool b_playing; /* is it in "play" state */
 118     bool b_paused; /* is it in "pause" state */
 119
 120     int i_es;
 121     rtsp_client_es_t **es;
 122
 123 } rtsp_client_t;
 124
 125 struct media_es_t
 126 {
 127     /* VoD server */
 128     vod_t *p_vod;
 129
 130     /* RTSP server */
 131     httpd_url_t *p_rtsp_url;
 132
 133     vod_media_t *p_media;
 134
 135     es_format_t fmt;
 136     uint8_t     i_payload_type;
 137     char        *psz_rtpmap;
 138     char        *psz_fmtp;
 139
 140 };
 141
 142 struct vod_media_t
 143 {
 144     int id;
 145
 146     /* VoD server */
 147     vod_t *p_vod;
 148
 149     /* RTSP server */
 150     httpd_url_t  *p_rtsp_url;
 151     char         *psz_rtsp_control_v4;
 152     char         *psz_rtsp_control_v6;
 153     char         *psz_rtsp_path;
 154
 155     int  i_payload_type;
 156
 157     int64_t i_sdp_id;
 158     int     i_sdp_version;
 159
 160     vlc_mutex_t lock;
 161
 162     /* ES list */
 163     int        i_es;
 164     media_es_t **es;
 165     char       *psz_mux;
 166     bool  b_raw;
 167
 168     /* RTSP client */
 169     int           i_rtsp;
 170     rtsp_client_t **rtsp;
 171
 172     /* Infos */
 173     mtime_t i_length;
 174 };
 175
 176 struct vod_sys_t
 177 {
 178     /* RTSP server */
 179     httpd_host_t *p_rtsp_host;
 180     char *psz_path;
 181     int i_port;
 182     int i_throttle_users;
 183     int i_connections;
 184
 185     char *psz_raw_mux;
 186
 187     int i_session_timeout;
 188
 189     /* List of media */
 190     vlc_mutex_t lock_media;
 191     int i_media_id;
 192     int i_media;
 193     vod_media_t **media;
 194
 195     /* */
 196     block_fifo_t *p_fifo_cmd;
 197 };
 198
 199 /* rtsp delayed command (to avoid deadlock between vlm/httpd) */
 200 typedef enum
 201 {
 202     RTSP_CMD_TYPE_NONE,  /* Exit requested */
 203
 204     RTSP_CMD_TYPE_PLAY,
 205     RTSP_CMD_TYPE_PAUSE,
 206     RTSP_CMD_TYPE_STOP,
 207     RTSP_CMD_TYPE_SEEK,
 208     RTSP_CMD_TYPE_REWIND,
 209     RTSP_CMD_TYPE_FORWARD,
 210
 211     RTSP_CMD_TYPE_ADD,
 212     RTSP_CMD_TYPE_DEL,
 213 } rtsp_cmd_type_t;
 214
 215 /* */
 216 typedef struct
 217 {
 218     int i_type;
 219     int i_media_id;
 220     vod_media_t *p_media;
 221     char *psz_session;
 222     char *psz_arg;
 223     double f_arg;
 224 } rtsp_cmd_t;
 225
 226 static vod_media_t *MediaNew( vod_t *, const char *, input_item_t * );
 227 static void         MediaDel( vod_t *, vod_media_t * );
 228 static void         MediaAskDel ( vod_t *, vod_media_t * );
 229 static int          MediaAddES( vod_t *, vod_media_t *, es_format_t * );
 230 static void         MediaDelES( vod_t *, vod_media_t *, es_format_t * );
 231
 232 static void* CommandThread( vlc_object_t *p_this );
 233 static void  CommandPush( vod_t *, rtsp_cmd_type_t, vod_media_t *, const char *psz_session,
 234                           double f_arg, const char *psz_arg );
 235
 236 static rtsp_client_t *RtspClientNew( vod_media_t *, char * );
 237 static rtsp_client_t *RtspClientGet( vod_media_t *, const char * );
 238 static void           RtspClientDel( vod_media_t *, rtsp_client_t * );
 239
 240 static int RtspCallback( httpd_callback_sys_t *, httpd_client_t *,
 241                          httpd_message_t *, const httpd_message_t * );
 242 static int RtspCallbackES( httpd_callback_sys_t *, httpd_client_t *,
 243                            httpd_message_t *, const httpd_message_t * );
 244
 245 static char *SDPGenerate( const vod_media_t *, httpd_client_t *cl );
 246
 247 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
 248 {
 249     static const char hex[16] = "0123456789abcdef";
 250     int i;
 251
 252     for( i = 0; i < i_data; i++ )
 253     {
 254         s[2*i+0] = hex[(p_data[i]>>4)&0xf];
 255         s[2*i+1] = hex[(p_data[i]   )&0xf];
 256     }
 257     s[2*i_data] = '\0';
 258 }
 259
 260 /*****************************************************************************
 261  * Open: Starts the RTSP server module
 262  *****************************************************************************/
 263 static int Open( vlc_object_t *p_this )
 264 {
 265     vod_t *p_vod = (vod_t *)p_this;
 266     vod_sys_t *p_sys = NULL;
 267     char *psz_url = NULL;
 268     vlc_url_t url;
 269
 270     psz_url = config_GetPsz( p_vod, "rtsp-host" );
 271     vlc_UrlParse( &url, psz_url, 0 );
 272     free( psz_url );
 273
 274     if( url.i_port <= 0 ) url.i_port = 554;
 275
 276     p_vod->p_sys = p_sys = malloc( sizeof( vod_sys_t ) );
 277     if( !p_sys ) goto error;
 278     p_sys->p_rtsp_host = 0;
 279
 280     p_sys->i_session_timeout = var_CreateGetInteger( p_this, "rtsp-session-timeout" );
 281
 282     p_sys->i_throttle_users = var_CreateGetInteger( p_this, "rtsp-throttle-users" );
 283     msg_Dbg( p_this, "allowing up to %d connections", p_sys->i_throttle_users );
 284     p_sys->i_connections = 0;
 285
 286     p_sys->psz_raw_mux = var_CreateGetString( p_this, "rtsp-raw-mux" );
 287
 288     p_sys->p_rtsp_host =
 289         httpd_HostNew( VLC_OBJECT(p_vod), url.psz_host, url.i_port );
 290     if( !p_sys->p_rtsp_host )
 291     {
 292         msg_Err( p_vod, "cannot create RTSP server (%s:%i)",
 293                  url.psz_host, url.i_port );
 294         goto error;
 295     }
 296
 297     p_sys->psz_path = strdup( url.psz_path ? url.psz_path : "/" );
 298     p_sys->i_port = url.i_port;
 299
 300     vlc_UrlClean( &url );
 301
 302     vlc_mutex_init( &p_sys->lock_media );
 303
 304     TAB_INIT( p_sys->i_media, p_sys->media );
 305     p_sys->i_media_id = 0;
 306
 307     p_vod->pf_media_new = MediaNew;
 308     p_vod->pf_media_del = MediaAskDel;
 309     p_vod->pf_media_add_es = MediaAddES;
 310     p_vod->pf_media_del_es = MediaDelES;
 311
 312     p_sys->p_fifo_cmd = block_FifoNew();
 313     if( vlc_thread_create( p_vod, "rtsp vod thread", CommandThread,
 314                            VLC_THREAD_PRIORITY_LOW ) )
 315     {
 316         msg_Err( p_vod, "cannot spawn rtsp vod thread" );
 317         block_FifoRelease( p_sys->p_fifo_cmd );
 318         free( p_sys->psz_path );
 319         goto error;
 320     }
 321
 322     return VLC_SUCCESS;
 323
 324 error:
 325     if( p_sys )
 326     {
 327         if( p_sys->p_rtsp_host ) httpd_HostDelete( p_sys->p_rtsp_host );
 328         free( p_sys->psz_raw_mux );
 329         free( p_sys );
 330     }
 331     vlc_UrlClean( &url );
 332
 333     return VLC_EGENERIC;
 334 }
 335
 336 /*****************************************************************************
 337  * Close:
 338  *****************************************************************************/
 339 static void Close( vlc_object_t * p_this )
 340 {
 341     vod_t *p_vod = (vod_t *)p_this;
 342     vod_sys_t *p_sys = p_vod->p_sys;
 343     block_t *p_block_cmd;
 344     rtsp_cmd_t cmd;
 345
 346     /* Stop command thread */
 347     vlc_object_kill( p_vod );
 348     CommandPush( p_vod, RTSP_CMD_TYPE_NONE, NULL, NULL, 0.0, NULL );
 349     vlc_thread_join( p_vod );
 350
 351     while( block_FifoCount( p_sys->p_fifo_cmd ) > 0 )
 352     {
 353          p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 354          memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 355          block_Release( p_block_cmd );
 356          if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 357              MediaDel(p_vod, cmd.p_media);
 358          free( cmd.psz_session );
 359          free( cmd.psz_arg );
 360     }
 361     block_FifoRelease( p_sys->p_fifo_cmd );
 362
 363     httpd_HostDelete( p_sys->p_rtsp_host );
 364     var_Destroy( p_this, "rtsp-session-timeout" );
 365     var_Destroy( p_this, "rtsp-throttle-users" );
 366     var_Destroy( p_this, "rtsp-raw-mux" );
 367
 368     /* Check VLM is not buggy */
 369     if( p_sys->i_media > 0 )
 370         msg_Err( p_vod, "rtsp vod leaking %d medias", p_sys->i_media );
 371     TAB_CLEAN( p_sys->i_media, p_sys->media );
 372
 373     vlc_mutex_destroy( &p_sys->lock_media );
 374
 375     free( p_sys->psz_path );
 376     free( p_sys->psz_raw_mux );
 377     free( p_sys );
 378 }
 379
 380 /*****************************************************************************
 381  * Media handling
 382  *****************************************************************************/
 383 static vod_media_t *MediaNew( vod_t *p_vod, const char *psz_name,
 384                               input_item_t *p_item )
 385 {
 386     int i;
 387     vod_sys_t *p_sys = p_vod->p_sys;
 388
 389     vod_media_t *p_media = calloc( 1, sizeof(vod_media_t) );
 390     if( !p_media )
 391         return NULL;
 392
 393     p_media->id = p_sys->i_media_id++;
 394     TAB_INIT( p_media->i_es, p_media->es );
 395     p_media->psz_mux = NULL;
 396     TAB_INIT( p_media->i_rtsp, p_media->rtsp );
 397     p_media->b_raw = false;
 398
 399     if( asprintf( &p_media->psz_rtsp_path, "%s%s",
 400                   p_sys->psz_path, psz_name ) <0 )
 401         return NULL;
 402     p_media->p_rtsp_url =
 403         httpd_UrlNewUnique( p_sys->p_rtsp_host, p_media->psz_rtsp_path, NULL,
 404                             NULL, NULL );
 405
 406     if( !p_media->p_rtsp_url )
 407     {
 408         msg_Err( p_vod, "cannot create RTSP url (%s)", p_media->psz_rtsp_path);
 409         free( p_media->psz_rtsp_path );
 410         free( p_media );
 411         return NULL;
 412     }
 413
 414     msg_Dbg( p_vod, "created RTSP url: %s", p_media->psz_rtsp_path );
 415
 416     if( asprintf( &p_media->psz_rtsp_control_v4,
 417                "a=control:rtsp://%%s:%d%s/trackID=%%d\r\n",
 418                p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 419     {
 420         httpd_UrlDelete( p_media->p_rtsp_url );
 421         free( p_media->psz_rtsp_path );
 422         free( p_media );
 423         return NULL;
 424     }
 425     if( asprintf( &p_media->psz_rtsp_control_v6,
 426                "a=control:rtsp://[%%s]:%d%s/trackID=%%d\r\n",
 427               p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 428     {
 429         httpd_UrlDelete( p_media->p_rtsp_url );
 430         free( p_media->psz_rtsp_path );
 431         free( p_media );
 432         return NULL;
 433     }
 434
 435     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_SETUP,
 436                     RtspCallback, (void*)p_media );
 437     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_DESCRIBE,
 438                     RtspCallback, (void*)p_media );
 439     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PLAY,
 440                     RtspCallback, (void*)p_media );
 441     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PAUSE,
 442                     RtspCallback, (void*)p_media );
 443     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_GETPARAMETER,
 444                     RtspCallback, (void*)p_media );
 445     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 446                     RtspCallback, (void*)p_media );
 447
 448     p_media->p_vod = p_vod;
 449
 450     vlc_mutex_init( &p_media->lock );
 451
 452     p_media->i_payload_type = 96;
 453
 454     p_media->i_sdp_id = mdate();
 455     p_media->i_sdp_version = 1;
 456     p_media->i_length = input_item_GetDuration( p_item );
 457
 458     vlc_mutex_lock( &p_item->lock );
 459     msg_Dbg( p_vod, "media has %i declared ES", p_item->i_es );
 460     for( i = 0; i < p_item->i_es; i++ )
 461     {
 462         MediaAddES( p_vod, p_media, p_item->es[i] );
 463     }
 464     vlc_mutex_unlock( &p_item->lock );
 465
 466     CommandPush( p_vod, RTSP_CMD_TYPE_ADD, p_media, NULL, 0.0, NULL );
 467     return p_media;
 468 }
 469
 470 static void MediaAskDel ( vod_t *p_vod, vod_media_t *p_media )
 471 {
 472     CommandPush( p_vod, RTSP_CMD_TYPE_DEL, p_media, NULL, 0.0, NULL );
 473 }
 474
 475 static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
 476 {
 477     vod_sys_t *p_sys = p_vod->p_sys;
 478
 479     msg_Dbg( p_vod, "deleting media: %s", p_media->psz_rtsp_path );
 480
 481     vlc_mutex_lock( &p_sys->lock_media );
 482     TAB_REMOVE( p_sys->i_media, p_sys->media, p_media );
 483     vlc_mutex_unlock( &p_sys->lock_media );
 484
 485     httpd_UrlDelete( p_media->p_rtsp_url );
 486
 487     while( p_media->i_rtsp > 0 )
 488         RtspClientDel( p_media, p_media->rtsp[0] );
 489     TAB_CLEAN( p_media->i_rtsp, p_media->rtsp );
 490
 491     free( p_media->psz_rtsp_path );
 492     free( p_media->psz_rtsp_control_v6 );
 493     free( p_media->psz_rtsp_control_v4 );
 494
 495     while( p_media->i_es )
 496         MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );
 497     TAB_CLEAN( p_media->i_es, p_media->es );
 498
 499     vlc_mutex_destroy( &p_media->lock );
 500
 501     free( p_media->psz_mux );
 502     free( p_media );
 503 }
 504
 505 static int MediaAddES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt )
 506 {
 507     char *psz_urlc;
 508     media_es_t *p_es = calloc( 1, sizeof(media_es_t) );
 509     if( !p_es )
 510         return VLC_ENOMEM;
 511
 512     free( p_media->psz_mux );
 513     p_media->psz_mux = NULL;
 514
 515     /* TODO: update SDP, etc... */
 516     if( asprintf( &psz_urlc, "%s/trackID=%d",
 517               p_media->psz_rtsp_path, p_media->i_es ) < 0 )
 518     {
 519         free( p_es );
 520         return VLC_ENOMEM;
 521     }
 522     msg_Dbg( p_vod, "  - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
 523
 524     switch( p_fmt->i_codec )
 525     {
 526         case VLC_CODEC_S16B:
 527             if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
 528             {
 529                 p_es->i_payload_type = 11;
 530             }
 531             else if( p_fmt->audio.i_channels == 2 &&
 532                      p_fmt->audio.i_rate == 44100 )
 533             {
 534                 p_es->i_payload_type = 10;
 535             }
 536             else
 537             {
 538                 p_es->i_payload_type = p_media->i_payload_type++;
 539             }
 540             if( asprintf( &p_es->psz_rtpmap, "L16/%d/%d", p_fmt->audio.i_rate,
 541                           p_fmt->audio.i_channels ) == -1 )
 542                 p_es->psz_rtpmap = NULL;
 543             break;
 544         case VLC_CODEC_U8:
 545             p_es->i_payload_type = p_media->i_payload_type++;
 546             if( asprintf( &p_es->psz_rtpmap, "L8/%d/%d", p_fmt->audio.i_rate,
 547                           p_fmt->audio.i_channels ) == -1 )
 548                 p_es->psz_rtpmap = NULL;
 549             break;
 550         case VLC_CODEC_MPGA:
 551             p_es->i_payload_type = 14;
 552             p_es->psz_rtpmap = strdup( "MPA/90000" );
 553             break;
 554         case VLC_CODEC_MPGV:
 555             p_es->i_payload_type = 32;
 556             p_es->psz_rtpmap = strdup( "MPV/90000" );
 557             break;
 558         case VLC_CODEC_A52:
 559             p_es->i_payload_type = p_media->i_payload_type++;
 560             if( asprintf( &p_es->psz_rtpmap, "ac3/%d", p_fmt->audio.i_rate ) == -1 )
 561                 p_es->psz_rtpmap = NULL;
 562             break;
 563         case VLC_CODEC_H263:
 564             p_es->i_payload_type = p_media->i_payload_type++;
 565             p_es->psz_rtpmap = strdup( "H263-1998/90000" );
 566             break;
 567         case VLC_CODEC_H264:
 568             p_es->i_payload_type = p_media->i_payload_type++;
 569             p_es->psz_rtpmap = strdup( "H264/90000" );
 570             p_es->psz_fmtp = NULL;
 571             /* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
 572             if( p_fmt->i_extra > 0 )
 573             {
 574                 uint8_t *p_buffer = p_fmt->p_extra;
 575                 int     i_buffer = p_fmt->i_extra;
 576                 char    *p_64_sps = NULL;
 577                 char    *p_64_pps = NULL;
 578                 char    hexa[6+1];
 579
 580                 while( i_buffer > 4 &&
 581                        p_buffer[0] == 0 && p_buffer[1] == 0 &&
 582                        p_buffer[2] == 0 && p_buffer[3] == 1 )
 583                 {
 584                     const int i_nal_type = p_buffer[4]&0x1f;
 585                     int i_offset;
 586                     int i_size      = 0;
 587
 588                     i_size = i_buffer;
 589                     for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
 590                     {
 591                         if( p_buffer[i_offset] == 0 && p_buffer[i_offset+1] == 0 && p_buffer[i_offset+2] == 0 && p_buffer[i_offset+3] == 1 )
 592                         {
 593                             /* we found another startcode */
 594                             i_size = i_offset;
 595                             break;
 596                         }
 597                     }
 598                     if( i_nal_type == 7 )
 599                     {
 600                         free( p_64_sps );
 601                         p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 602                         sprintf_hexa( hexa, &p_buffer[5], 3 );
 603                     }
 604                     else if( i_nal_type == 8 )
 605                     {
 606                         free( p_64_pps );
 607                         p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 608                     }
 609                     i_buffer -= i_size;
 610                     p_buffer += i_size;
 611                 }
 612                 /* */
 613                 if( p_64_sps && p_64_pps )
 614                 {
 615                     if( asprintf( &p_es->psz_fmtp,
 616                                   "packetization-mode=1;profile-level-id=%s;"
 617                                   "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
 618                                   p_64_pps ) < 0 )
 619                     {
 620                         free( p_64_sps );
 621                         free( p_64_pps );
 622                         free( psz_urlc );
 623                         free( p_es );
 624                         return VLC_ENOMEM;
 625                     }
 626                 }
 627                 free( p_64_sps );
 628                 free( p_64_pps );
 629             }
 630             if( !p_es->psz_fmtp )
 631                 p_es->psz_fmtp = strdup( "packetization-mode=1" );
 632             break;
 633         case VLC_CODEC_MP4V:
 634             p_es->i_payload_type = p_media->i_payload_type++;
 635             p_es->psz_rtpmap = strdup( "MP4V-ES/90000" );
 636             if( p_fmt->i_extra > 0 )
 637             {
 638                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 639                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 640                 if( asprintf( &p_es->psz_fmtp,
 641                               "profile-level-id=3; config=%s;", p_hexa ) == -1 )
 642                     p_es->psz_fmtp = NULL;
 643                 free( p_hexa );
 644             }
 645             break;
 646         case VLC_CODEC_MP4A:
 647             p_es->i_payload_type = p_media->i_payload_type++;
 648             if( asprintf( &p_es->psz_rtpmap, "mpeg4-generic/%d", p_fmt->audio.i_rate ) == -1 )
 649                 p_es->psz_rtpmap = NULL;
 650             if( p_fmt->i_extra > 0 )
 651             {
 652                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 653                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 654                 if( asprintf( &p_es->psz_fmtp,
 655                               "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
 656                               "config=%s; SizeLength=13;IndexLength=3; "
 657                               "IndexDeltaLength=3; Profile=1;", p_hexa ) == -1 )
 658                     p_es->psz_fmtp = NULL;
 659                 free( p_hexa );
 660             }
 661             break;
 662         case VLC_FOURCC( 'm', 'p', '2', 't' ):
 663             p_media->psz_mux = strdup("ts");
 664             p_es->i_payload_type = 33;
 665             p_es->psz_rtpmap = strdup( "MP2T/90000" );
 666             break;
 667         case VLC_FOURCC( 'm', 'p', '2', 'p' ):
 668             p_media->psz_mux = strdup("ps");
 669             p_es->i_payload_type = p_media->i_payload_type++;
 670             p_es->psz_rtpmap = strdup( "MP2P/90000" );
 671             break;
 672         case VLC_CODEC_AMR_NB:
 673             p_es->i_payload_type = p_media->i_payload_type++;
 674             p_es->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
 675                                     "AMR/8000/2" : "AMR/8000" );
 676             p_es->psz_fmtp = strdup( "octet-align=1" );
 677             break;
 678         case VLC_CODEC_AMR_WB:
 679             p_es->i_payload_type = p_media->i_payload_type++;
 680             p_es->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
 681                                     "AMR-WB/16000/2" : "AMR-WB/16000" );
 682             p_es->psz_fmtp = strdup( "octet-align=1" );
 683             break;
 684
 685         default:
 686             msg_Err( p_vod, "cannot add this stream (unsupported "
 687                     "codec: %4.4s)", (char*)&p_fmt->i_codec );
 688             free( psz_urlc );
 689             free( p_es );
 690             return VLC_EGENERIC;
 691     }
 692
 693     p_es->p_rtsp_url =
 694         httpd_UrlNewUnique( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL,
 695                             NULL );
 696
 697     if( !p_es->p_rtsp_url )
 698     {
 699         msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
 700         free( psz_urlc );
 701         free( p_es );
 702         return VLC_EGENERIC;
 703     }
 704     free( psz_urlc );
 705
 706     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
 707                     RtspCallbackES, (void*)p_es );
 708     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 709                     RtspCallbackES, (void*)p_es );
 710     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
 711                     RtspCallbackES, (void*)p_es );
 712     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
 713                     RtspCallbackES, (void*)p_es );
 714
 715     es_format_Copy( &p_es->fmt, p_fmt );
 716     p_es->p_vod = p_vod;
 717     p_es->p_media = p_media;
 718
 719     vlc_mutex_lock( &p_media->lock );
 720     TAB_APPEND( p_media->i_es, p_media->es, p_es );
 721     vlc_mutex_unlock( &p_media->lock );
 722
 723     p_media->i_sdp_version++;
 724
 725     return VLC_SUCCESS;
 726 }
 727
 728 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
 729 {
 730     media_es_t *p_es = NULL;
 731     int i;
 732
 733     /* Find the ES */
 734     for( i = 0; i < p_media->i_es; i++ )
 735     {
 736         if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
 737             p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
 738             p_media->es[i]->fmt.i_id == p_fmt->i_id )
 739         {
 740             p_es = p_media->es[i];
 741         }
 742     }
 743     if( !p_es ) return;
 744
 745     msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );
 746
 747     vlc_mutex_lock( &p_media->lock );
 748     TAB_REMOVE( p_media->i_es, p_media->es, p_es );
 749     vlc_mutex_unlock( &p_media->lock );
 750
 751     free( p_es->psz_rtpmap );
 752     free( p_es->psz_fmtp );
 753     p_media->i_sdp_version++;
 754
 755     if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
 756     es_format_Clean( &p_es->fmt );
 757     free( p_es );
 758 }
 759
 760 static void CommandPush( vod_t *p_vod, rtsp_cmd_type_t i_type, vod_media_t *p_media, const char *psz_session,
 761                          double f_arg, const char *psz_arg )
 762 {
 763     rtsp_cmd_t cmd;
 764     block_t *p_cmd;
 765
 766     memset( &cmd, 0, sizeof(cmd) );
 767     cmd.i_type = i_type;
 768     cmd.p_media = p_media;
 769     if( p_media )
 770         cmd.i_media_id = p_media->id;
 771     if( psz_session )
 772         cmd.psz_session = strdup(psz_session);
 773     cmd.f_arg = f_arg;
 774     if( psz_arg )
 775         cmd.psz_arg = strdup(psz_arg);
 776
 777     p_cmd = block_New( p_vod, sizeof(rtsp_cmd_t) );
 778     memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
 779
 780     block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
 781 }
 782
 783 static void* CommandThread( vlc_object_t *p_this )
 784 {
 785     vod_t *p_vod = (vod_t*)p_this;
 786     vod_sys_t *p_sys = p_vod->p_sys;
 787     int canc = vlc_savecancel ();
 788
 789     while( vlc_object_alive (p_vod) )
 790     {
 791         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 792         rtsp_cmd_t cmd;
 793         vod_media_t *p_media = NULL;
 794         int i;
 795
 796         if( !p_block_cmd )
 797             break;
 798
 799         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 800         block_Release( p_block_cmd );
 801
 802         if( cmd.i_type == RTSP_CMD_TYPE_NONE )
 803             break;
 804
 805         if ( cmd.i_type == RTSP_CMD_TYPE_ADD )
 806         {
 807             vlc_mutex_lock( &p_sys->lock_media );
 808             TAB_APPEND( p_sys->i_media, p_sys->media, cmd.p_media );
 809             vlc_mutex_unlock( &p_sys->lock_media );
 810             goto next;
 811         }
 812
 813         if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 814         {
 815             MediaDel(p_vod, cmd.p_media);
 816             goto next;
 817         }
 818
 819         /* */
 820         vlc_mutex_lock( &p_sys->lock_media );
 821         for( i = 0; i < p_sys->i_media; i++ )
 822         {
 823             if( p_sys->media[i]->id == cmd.i_media_id )
 824                 break;
 825         }
 826         if( i >= p_sys->i_media )
 827         {
 828             vlc_mutex_unlock( &p_sys->lock_media );
 829             goto next;
 830         }
 831         p_media = p_sys->media[i];
 832
 833         switch( cmd.i_type )
 834         {
 835         case RTSP_CMD_TYPE_PLAY:
 836             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 837                               VOD_MEDIA_PLAY, cmd.psz_arg );
 838             break;
 839         case RTSP_CMD_TYPE_PAUSE:
 840             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 841                               VOD_MEDIA_PAUSE );
 842             break;
 843
 844         case RTSP_CMD_TYPE_STOP:
 845             vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
 846             break;
 847
 848         case RTSP_CMD_TYPE_SEEK:
 849             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 850                               VOD_MEDIA_SEEK, cmd.f_arg );
 851             break;
 852
 853         case RTSP_CMD_TYPE_REWIND:
 854             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 855                               VOD_MEDIA_REWIND, cmd.f_arg );
 856             break;
 857
 858         case RTSP_CMD_TYPE_FORWARD:
 859             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 860                               VOD_MEDIA_FORWARD, cmd.f_arg );
 861             break;
 862
 863         default:
 864             break;
 865         }
 866         vlc_mutex_unlock( &p_sys->lock_media );
 867
 868     next:
 869         free( cmd.psz_session );
 870         free( cmd.psz_arg );
 871     }
 872
 873     vlc_restorecancel (canc);
 874     return NULL;
 875 }
 876
 877 /****************************************************************************
 878  * RTSP server implementation
 879  ****************************************************************************/
 880 static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
 881 {
 882     rtsp_client_t *p_rtsp = calloc( 1, sizeof(rtsp_client_t) );
 883
 884     if( !p_rtsp )
 885         return NULL;
 886     p_rtsp->es = 0;
 887
 888     p_rtsp->psz_session = psz_session;
 889     TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 890
 891     p_media->p_vod->p_sys->i_connections++;
 892     msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
 893              psz_session, p_media->p_vod->p_sys->i_throttle_users );
 894
 895     return p_rtsp;
 896 }
 897
 898 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
 899 {
 900     int i;
 901
 902     for( i = 0; psz_session && i < p_media->i_rtsp; i++ )
 903     {
 904         if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
 905             return p_media->rtsp[i];
 906     }
 907
 908     return NULL;
 909 }
 910
 911 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
 912 {
 913     p_media->p_vod->p_sys->i_connections--;
 914     msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
 915              p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
 916
 917     while( p_rtsp->i_es )
 918     {
 919         p_rtsp->i_es--;
 920         free( p_rtsp->es[p_rtsp->i_es]->psz_ip );
 921         free( p_rtsp->es[p_rtsp->i_es] );
 922     }
 923     free( p_rtsp->es );
 924
 925     TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 926
 927     free( p_rtsp->psz_session );
 928     free( p_rtsp );
 929 }
 930
 931
 932 static float ParseNPT (const char *str)
 933 {
 934      locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
 935      locale_t oldloc = uselocale (loc);
 936      unsigned hour, min;
 937      float sec;
 938
 939      if (sscanf (str, "%u:%u:%f", &hour, &min, &sec) == 3)
 940          sec += ((hour * 60) + min) * 60;
 941      else
 942      if (sscanf (str, "%f", &sec) != 1)
 943          sec = 0.;
 944
 945      if (loc != (locale_t)0)
 946      {
 947          uselocale (oldloc);
 948          freelocale (loc);
 949      }
 950      return sec;
 951 }
 952
 953
 954 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
 955                          httpd_message_t *answer, const httpd_message_t *query )
 956 {
 957     vod_media_t *p_media = (vod_media_t*)p_args;
 958     vod_t *p_vod = p_media->p_vod;
 959     const char *psz_transport = NULL;
 960     const char *psz_playnow = NULL; /* support option: x-playNow */
 961     const char *psz_session = NULL;
 962     const char *psz_cseq = NULL;
 963     rtsp_client_t *p_rtsp;
 964     int i_port = 0;
 965     int i_cseq = 0;
 966
 967     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
 968
 969     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
 970
 971     answer->i_proto   = HTTPD_PROTO_RTSP;
 972     answer->i_version = query->i_version;
 973     answer->i_type    = HTTPD_MSG_ANSWER;
 974     answer->i_body    = 0;
 975     answer->p_body    = NULL;
 976
 977     switch( query->i_type )
 978     {
 979         case HTTPD_MSG_SETUP:
 980         {
 981             psz_playnow = httpd_MsgGet( query, "x-playNow" );
 982             psz_transport = httpd_MsgGet( query, "Transport" );
 983             if( psz_transport == NULL )
 984             {
 985                 answer->i_status = 400;
 986                 break;
 987             }
 988             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
 989
 990             if( strstr( psz_transport, "unicast" ) &&
 991                 strstr( psz_transport, "client_port=" ) )
 992             {
 993                 rtsp_client_t *p_rtsp = NULL;
 994                 char ip[NI_MAXNUMERICHOST];
 995                 i_port = atoi( strstr( psz_transport, "client_port=" ) +
 996                                 strlen("client_port=") );
 997
 998                 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
 999                     strstr( psz_transport, "RAW/RAW/UDP" ) )
1000                 {
1001                     free( p_media->psz_mux );
1002                     p_media->psz_mux = NULL;
1003                     p_media->psz_mux = strdup( p_vod->p_sys->psz_raw_mux );
1004                     p_media->b_raw = true;
1005                 }
1006
1007                 if( httpd_ClientIP( cl, ip ) == NULL )
1008                 {
1009                     answer->i_status = 500;
1010                     answer->i_body = 0;
1011                     answer->p_body = NULL;
1012                     break;
1013                 }
1014
1015                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1016                          ip, i_port );
1017
1018                 psz_session = httpd_MsgGet( query, "Session" );
1019                 if( !psz_session || !*psz_session )
1020                 {
1021                     char *psz_new;
1022                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1023                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1024                     {
1025                         answer->i_status = 503;
1026                         answer->i_body = 0;
1027                         answer->p_body = NULL;
1028                         break;
1029                     }
1030                     if( asprintf( &psz_new, "%d", rand() ) < 0 )
1031                         return VLC_ENOMEM;
1032                     psz_session = psz_new;
1033
1034                     p_rtsp = RtspClientNew( p_media, psz_new );
1035                     if( !p_rtsp )
1036                     {
1037                         answer->i_status = 454;
1038                         answer->i_body = 0;
1039                         answer->p_body = NULL;
1040                         break;
1041                     }
1042                 }
1043                 else
1044                 {
1045                     p_rtsp = RtspClientGet( p_media, psz_session );
1046                     if( !p_rtsp )
1047                     {
1048                         answer->i_status = 454;
1049                         answer->i_body = 0;
1050                         answer->p_body = NULL;
1051                         break;
1052                     }
1053                 }
1054
1055                 answer->i_status = 200;
1056                 answer->i_body = 0;
1057                 answer->p_body = NULL;
1058
1059                 if( p_media->b_raw )
1060                 {
1061                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1062                     {
1063                         httpd_MsgAdd( answer, "Transport",
1064                                       "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1065                                       i_port, i_port + 1 );
1066                     }
1067                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1068                     {
1069                         httpd_MsgAdd( answer, "Transport",
1070                                       "RAW/RAW/UDP;unicast;client_port=%d-%d",
1071                                       i_port, i_port + 1 );
1072                     }
1073                 }
1074                 else
1075                     httpd_MsgAdd( answer, "Transport",
1076                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1077                                   i_port, i_port + 1 );
1078             }
1079             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1080             {
1081                 answer->i_status = 461;
1082                 answer->i_body = 0;
1083                 answer->p_body = NULL;
1084             }
1085
1086             /* Intentional fall-through on x-playNow option in RTSP request */
1087             if( !psz_playnow )
1088                 break;
1089         }
1090
1091         case HTTPD_MSG_PLAY:
1092         {
1093             char *psz_output, ip[NI_MAXNUMERICHOST];
1094             int i, i_port_audio = 0, i_port_video = 0;
1095
1096             /* for now only multicast so easy */
1097             if( !psz_playnow )
1098             {
1099                 answer->i_status = 200;
1100                 answer->i_body = 0;
1101                 answer->p_body = NULL;
1102             }
1103
1104             if( !psz_session )
1105                 psz_session = httpd_MsgGet( query, "Session" );
1106             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1107
1108             p_rtsp = RtspClientGet( p_media, psz_session );
1109             if( !p_rtsp )
1110             {
1111                 answer->i_status = 500;
1112                 answer->i_body = 0;
1113                 answer->p_body = NULL;
1114                 break;
1115             }
1116
1117             if( p_rtsp->b_playing )
1118             {
1119                 const char *psz_position = httpd_MsgGet( query, "Range" );
1120                 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1121                 if( psz_position )
1122                     psz_position = strstr( psz_position, "npt=" );
1123                 if( psz_position && !psz_scale )
1124                 {
1125                     double f_pos = ParseNPT (psz_position + 4);
1126                     msg_Dbg( p_vod, "seeking request: %s", psz_position );
1127                     f_pos /= ((double)(p_media->i_length))/1000 /1000 / 100;
1128                     CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1129                                  psz_session, f_pos, NULL );
1130                 }
1131                 else if( psz_scale )
1132                 {
1133                     double f_scale = 0.0;
1134                     char *end;
1135
1136                     f_scale = us_strtod( psz_scale, &end );
1137                     if( end > psz_scale )
1138                     {
1139                         f_scale = (f_scale * 30.0);
1140                         if( psz_scale[0] == '-' ) /* rewind */
1141                         {
1142                             msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1143                             CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
1144                                          psz_session, f_scale, NULL );
1145                         }
1146                         else if(psz_scale[0] != '1' ) /* fast-forward */
1147                         {
1148                             msg_Dbg( p_vod, "fastforward request: %s",
1149                                      psz_scale );
1150                             CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
1151                                          psz_session, f_scale, NULL );
1152                         }
1153
1154                         if( p_rtsp->b_paused == true )
1155                         {
1156                             p_rtsp->b_paused = false;
1157                             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1158                                          psz_session, 0, NULL );
1159                         }
1160                     }
1161                     break;
1162                 }
1163             }
1164
1165             if( p_rtsp->b_playing && p_rtsp->b_paused )
1166             {
1167                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1168                              psz_session, 0, NULL );
1169                 p_rtsp->b_paused = false;
1170                 break;
1171             }
1172             else if( p_rtsp->b_playing ) break;
1173
1174             if( httpd_ClientIP( cl, ip ) == NULL ) break;
1175
1176             p_rtsp->b_playing = true;
1177
1178             /* FIXME for != 1 video and 1 audio */
1179             for( i = 0; i < p_rtsp->i_es; i++ )
1180             {
1181                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1182                     i_port_audio = p_rtsp->es[i]->i_port;
1183                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1184                     i_port_video = p_rtsp->es[i]->i_port;
1185             }
1186
1187             if( p_media->psz_mux )
1188             {
1189                 if( p_media->b_raw )
1190                 {
1191                     if( asprintf( &psz_output,
1192                               "std{access=udp,dst=%s:%i,mux=%s}",
1193                               ip, i_port, p_media->psz_mux ) < 0 )
1194                         return VLC_ENOMEM;
1195                 }
1196                 else
1197                 {
1198                     if( asprintf( &psz_output,
1199                               "rtp{dst=%s,port=%i,mux=%s}",
1200                               ip, i_port_video, p_media->psz_mux ) < 0 )
1201                         return VLC_ENOMEM;
1202                 }
1203             }
1204             else
1205             {
1206                 if( asprintf( &psz_output,
1207                               "rtp{dst=%s,port-video=%i,port-audio=%i}",
1208                               ip, i_port_video, i_port_audio ) < 0 )
1209                     return VLC_ENOMEM;
1210             }
1211
1212             CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1213                          0, psz_output );
1214             free( psz_output );
1215             break;
1216         }
1217
1218         case HTTPD_MSG_DESCRIBE:
1219         {
1220             char *psz_sdp =
1221                 SDPGenerate( p_media, cl );
1222
1223             if( psz_sdp != NULL )
1224             {
1225                 answer->i_status = 200;
1226                 httpd_MsgAdd( answer, "Content-type",  "%s",
1227                               "application/sdp" );
1228
1229                 answer->p_body = (uint8_t *)psz_sdp;
1230                 answer->i_body = strlen( psz_sdp );
1231             }
1232             else
1233             {
1234                 answer->i_status = 500;
1235                 answer->p_body = NULL;
1236                 answer->i_body = 0;
1237             }
1238             break;
1239         }
1240
1241         case HTTPD_MSG_PAUSE:
1242             psz_session = httpd_MsgGet( query, "Session" );
1243             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1244
1245             p_rtsp = RtspClientGet( p_media, psz_session );
1246             if( !p_rtsp ) break;
1247
1248             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1249                          0, NULL );
1250             p_rtsp->b_paused = true;
1251
1252             answer->i_status = 200;
1253             answer->i_body = 0;
1254             answer->p_body = NULL;
1255             break;
1256
1257         case HTTPD_MSG_TEARDOWN:
1258             /* for now only multicast so easy again */
1259             answer->i_status = 200;
1260             answer->i_body = 0;
1261             answer->p_body = NULL;
1262
1263             psz_session = httpd_MsgGet( query, "Session" );
1264             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1265
1266             p_rtsp = RtspClientGet( p_media, psz_session );
1267             if( !p_rtsp ) break;
1268
1269             CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1270                          0, NULL );
1271             RtspClientDel( p_media, p_rtsp );
1272             break;
1273
1274         case HTTPD_MSG_GETPARAMETER:
1275             answer->i_status = 200;
1276             answer->i_body = 0;
1277             answer->p_body = NULL;
1278             break;
1279
1280         default:
1281             return VLC_EGENERIC;
1282     }
1283
1284     httpd_MsgAdd( answer, "Server", "VLC Server" );
1285     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1286     psz_cseq = httpd_MsgGet( query, "Cseq" );
1287     psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1288     httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1289     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1290
1291     if( psz_session )
1292     {
1293          if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
1294              httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1295                p_media->p_vod->p_sys->i_session_timeout );
1296          else
1297               httpd_MsgAdd( answer, "Session", "%s", psz_session );
1298     }
1299
1300     return VLC_SUCCESS;
1301 }
1302
1303 static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1304                            httpd_message_t *answer,
1305                            const httpd_message_t *query )
1306 {
1307     media_es_t *p_es = (media_es_t*)p_args;
1308     vod_media_t *p_media = p_es->p_media;
1309     vod_t *p_vod = p_media->p_vod;
1310     rtsp_client_t *p_rtsp = NULL;
1311     const char *psz_transport = NULL;
1312     const char *psz_playnow = NULL; /* support option: x-playNow */
1313     const char *psz_session = NULL;
1314     const char *psz_position = NULL;
1315     const char *psz_cseq = NULL;
1316     int i_cseq = 0;
1317     int i;
1318
1319     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1320
1321     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1322
1323     answer->i_proto   = HTTPD_PROTO_RTSP;
1324     answer->i_version = query->i_version;
1325     answer->i_type    = HTTPD_MSG_ANSWER;
1326     answer->i_body    = 0;
1327     answer->p_body      = NULL;
1328
1329     switch( query->i_type )
1330     {
1331         case HTTPD_MSG_SETUP:
1332             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1333             psz_transport = httpd_MsgGet( query, "Transport" );
1334
1335             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1336
1337             if( strstr( psz_transport, "unicast" ) &&
1338                 strstr( psz_transport, "client_port=" ) )
1339             {
1340                 rtsp_client_t *p_rtsp = NULL;
1341                 rtsp_client_es_t *p_rtsp_es = NULL;
1342                 char ip[NI_MAXNUMERICHOST];
1343                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
1344                                    strlen("client_port=") );
1345
1346                 if( httpd_ClientIP( cl, ip ) == NULL )
1347                 {
1348                     answer->i_status = 500;
1349                     answer->i_body = 0;
1350                     answer->p_body = NULL;
1351                     break;
1352                 }
1353
1354                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1355                         ip, i_port );
1356
1357                 psz_session = httpd_MsgGet( query, "Session" );
1358                 if( !psz_session || !*psz_session )
1359                 {
1360                     char *psz_new;
1361                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1362                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1363                     {
1364                         answer->i_status = 503;
1365                         answer->i_body = 0;
1366                         answer->p_body = NULL;
1367                         break;
1368                     }
1369                     if( asprintf( &psz_new, "%d", rand() ) < 0 )
1370                         return VLC_ENOMEM;
1371                     psz_session = psz_new;
1372
1373                     p_rtsp = RtspClientNew( p_media, psz_new );
1374                     if( !p_rtsp )
1375                     {
1376                         answer->i_status = 454;
1377                         answer->i_body = 0;
1378                         answer->p_body = NULL;
1379                         break;
1380                     }
1381                 }
1382                 else
1383                 {
1384                     p_rtsp = RtspClientGet( p_media, psz_session );
1385                     if( !p_rtsp )
1386                     {
1387                         answer->i_status = 454;
1388                         answer->i_body = 0;
1389                         answer->p_body = NULL;
1390                         break;
1391                     }
1392                 }
1393
1394                 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1395                 if( !p_rtsp_es )
1396                 {
1397                     answer->i_status = 500;
1398                     answer->i_body = 0;
1399                     answer->p_body = NULL;
1400                     break;
1401                 }
1402                 p_rtsp_es->i_port = i_port;
1403                 p_rtsp_es->psz_ip = strdup( ip );
1404                 p_rtsp_es->p_media_es = p_es;
1405                 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1406
1407                 answer->i_status = 200;
1408                 answer->i_body = 0;
1409                 answer->p_body = NULL;
1410
1411                 if( p_media->b_raw )
1412                 {
1413                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1414                     {
1415                         httpd_MsgAdd( answer, "Transport",
1416                                      "MP2T/H2221/UDP;client_port=%d-%d",
1417                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1418                     }
1419                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1420                     {
1421                         httpd_MsgAdd( answer, "Transport",
1422                                      "RAW/RAW/UDP;client_port=%d-%d",
1423                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1424                     }
1425                 }
1426                 else
1427                 {
1428                     httpd_MsgAdd( answer, "Transport",
1429                                   "RTP/AVP/UDP;client_port=%d-%d",
1430                                   p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1431                 }
1432             }
1433             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1434             {
1435                 answer->i_status = 461;
1436                 answer->i_body = 0;
1437                 answer->p_body = NULL;
1438             }
1439
1440             /* Intentional fall-through on x-playNow option in RTSP request */
1441             if( !psz_playnow )
1442                 break;
1443
1444         case HTTPD_MSG_PLAY:
1445             /* This is kind of a kludge. Should we only support Aggregate
1446              * Operations ? */
1447             psz_session = httpd_MsgGet( query, "Session" );
1448             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1449
1450             p_rtsp = RtspClientGet( p_media, psz_session );
1451
1452             psz_position = httpd_MsgGet( query, "Range" );
1453             if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1454             if( psz_position )
1455             {
1456                 double f_pos = ParseNPT (psz_position + 4);
1457                 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1458                 f_pos /= ((double)(p_media->i_length))/1000 /1000 / 100;
1459                 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1460                              psz_session, f_pos, NULL );
1461             }
1462
1463             if( !psz_playnow )
1464             {
1465                 answer->i_status = 200;
1466                 answer->i_body = 0;
1467                 answer->p_body = NULL;
1468             }
1469             break;
1470
1471         case HTTPD_MSG_TEARDOWN:
1472             answer->i_status = 200;
1473             answer->i_body = 0;
1474             answer->p_body = NULL;
1475
1476             psz_session = httpd_MsgGet( query, "Session" );
1477             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1478
1479             p_rtsp = RtspClientGet( p_media, psz_session );
1480             if( !p_rtsp ) break;
1481
1482             for( i = 0; i < p_rtsp->i_es; i++ )
1483             {
1484                 if( p_rtsp->es[i]->p_media_es == p_es )
1485                 {
1486                     free( p_rtsp->es[i]->psz_ip );
1487                     TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, p_rtsp->es[i] );
1488                     break;
1489                 }
1490             }
1491
1492             if( !p_rtsp->i_es )
1493             {
1494                 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1495                              0, NULL );
1496                 RtspClientDel( p_media, p_rtsp );
1497             }
1498             break;
1499
1500         case HTTPD_MSG_PAUSE:
1501             /* This is kind of a kludge. Should we only support Aggregate
1502              * Operations ? */
1503             psz_session = httpd_MsgGet( query, "Session" );
1504             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1505
1506             p_rtsp = RtspClientGet( p_media, psz_session );
1507             if( !p_rtsp ) break;
1508
1509             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1510                          0, NULL );
1511             p_rtsp->b_paused = true;
1512
1513             answer->i_status = 200;
1514             answer->i_body = 0;
1515             answer->p_body = NULL;
1516             break;
1517
1518         default:
1519             return VLC_EGENERIC;
1520             break;
1521     }
1522
1523     httpd_MsgAdd( answer, "Server", "VLC Server" );
1524     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1525     psz_cseq = httpd_MsgGet( query, "Cseq" );
1526     if (psz_cseq)
1527         i_cseq = atoi( psz_cseq );
1528     else
1529         i_cseq = 0;
1530     httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1531     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1532
1533     if( psz_session )
1534         httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1535
1536     return VLC_SUCCESS;
1537 }
1538
1539 /*****************************************************************************
1540  * SDPGenerate: TODO
1541  * FIXME: need to be moved to a common place ?
1542  *****************************************************************************/
1543 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1544 {
1545     int i, i_size;
1546     char *p, *psz_sdp, ip[NI_MAXNUMERICHOST], ipv;
1547     const char *psz_control;
1548
1549     if( httpd_ServerIP( cl, ip ) == NULL )
1550         return NULL;
1551
1552     p = strchr( ip, '%' );
1553     if( p != NULL )
1554         *p = '\0'; /* remove scope if present */
1555
1556     ipv = ( strchr( ip, ':' ) != NULL ) ? '6' : '4';
1557
1558     /* Calculate size */
1559     i_size = sizeof( "v=0\r\n" ) +
1560         sizeof( "o=- * * IN IP4 \r\n" ) + 10 + NI_MAXNUMERICHOST +
1561         sizeof( "c=IN IP4 0.0.0.0\r\n" ) + 20 + 10 +
1562         sizeof( "t=0 0\r\n" ) + /* FIXME */
1563         sizeof( "a=tool:"PACKAGE_STRING"\r\n" ) +
1564         sizeof( "a=range:npt=0-1000000000.000\r\n" );
1565
1566     psz_control = (ipv == '6') ? p_media->psz_rtsp_control_v6
1567                                : p_media->psz_rtsp_control_v4;
1568     for( i = 0; i < p_media->i_es; i++ )
1569     {
1570         media_es_t *p_es = p_media->es[i];
1571
1572         i_size += sizeof( "m=**d*o * RTP/AVP *\r\n" ) + 19;
1573         if( p_es->psz_rtpmap )
1574         {
1575             i_size += sizeof( "a=rtpmap:* *\r\n" ) +
1576                 strlen( p_es->psz_rtpmap ) + 9;
1577         }
1578         if( p_es->psz_fmtp )
1579         {
1580             i_size += sizeof( "a=fmtp:* *\r\n" ) +
1581                 strlen( p_es->psz_fmtp ) + 9;
1582         }
1583     }
1584     i_size += (strlen( psz_control ) + strlen( ip ) + 9) * p_media->i_es;
1585
1586     p = psz_sdp = malloc( i_size );
1587     p += sprintf( p, "v=0\r\n" );
1588     p += sprintf( p, "o=- %"PRId64" %d IN IP%c %s\r\n",
1589                   p_media->i_sdp_id, p_media->i_sdp_version, ipv, ip );
1590
1591     p += sprintf( p, "c=IN IP%c %s\r\n", ipv, ipv == '6' ? "::" : "0.0.0.0" );
1592     p += sprintf( p, "t=0 0\r\n" ); /* FIXME */
1593     p += sprintf( p, "a=tool:"PACKAGE_STRING"\r\n" );
1594
1595     if( p_media->i_length > 0 )
1596     {
1597         lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
1598         p += sprintf( p, "a=range:npt=0-%lld.%03u\r\n", d.quot,
1599                       (unsigned)d.rem );
1600     }
1601
1602     for( i = 0; i < p_media->i_es; i++ )
1603     {
1604         media_es_t *p_es = p_media->es[i];
1605
1606         if( p_es->fmt.i_cat == AUDIO_ES )
1607         {
1608             p += sprintf( p, "m=audio %d RTP/AVP %d\r\n",
1609                           0 /* p_es->i_port */, p_es->i_payload_type );
1610         }
1611         else if( p_es->fmt.i_cat == VIDEO_ES )
1612         {
1613             p += sprintf( p, "m=video %d RTP/AVP %d\r\n",
1614                           0 /* p_es->i_port */, p_es->i_payload_type );
1615         }
1616         else
1617         {
1618             continue;
1619         }
1620
1621         if( p_es->psz_rtpmap )
1622         {
1623             p += sprintf( p, "a=rtpmap:%d %s\r\n", p_es->i_payload_type,
1624                           p_es->psz_rtpmap );
1625         }
1626         if( p_es->psz_fmtp )
1627         {
1628             p += sprintf( p, "a=fmtp:%d %s\r\n", p_es->i_payload_type,
1629                           p_es->psz_fmtp );
1630         }
1631
1632         p += sprintf( p, psz_control, ip, i );
1633     }
1634
1635     return psz_sdp;
1636 }