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 #include <vlc_rand.h>
  46
  47 #ifndef WIN32
  48 # include <locale.h>
  49 #endif
  50
  51 #ifdef HAVE_XLOCALE_H
  52 # include <xlocale.h>
  53 #endif
  54
  55 /*****************************************************************************
  56  * Module descriptor
  57  *****************************************************************************/
  58 static int  Open ( vlc_object_t * );
  59 static void Close( vlc_object_t * );
  60
  61 #define HOST_TEXT N_( "RTSP host address" )
  62 #define HOST_LONGTEXT N_( \
  63     "This defines the address, port and path the RTSP VOD server will listen " \
  64     "on.\nSyntax is address:port/path. The default is to listen on all "\
  65     "interfaces (address 0.0.0.0), on port 554, with no path.\nTo listen " \
  66     "only on the local interface, use \"localhost\" as address." )
  67
  68 #define THROTTLE_TEXT N_( "Maximum number of connections" )
  69 #define THROTTLE_LONGTEXT N_( "This limits the maximum number of clients " \
  70     "that can connect to the RTSP VOD. 0 means no limit."  )
  71
  72 #define RAWMUX_TEXT N_( "MUX for RAW RTSP transport" )
  73
  74 #define SESSION_TIMEOUT_TEXT N_( "Sets the timeout option in the RTSP " \
  75     "session string" )
  76 #define SESSION_TIMEOUT_LONGTEXT N_( "Defines what timeout option to add " \
  77     "to the RTSP session ID string. Setting it to a negative number removes " \
  78     "the timeout option entirely. This is needed by some IPTV STBs (such as " \
  79     "those made by HansunTech) which get confused by it. The default is 5." )
  80
  81 vlc_module_begin ()
  82     set_shortname( N_("RTSP VoD" ) )
  83     set_description( N_("RTSP VoD server") )
  84     set_category( CAT_SOUT )
  85     set_subcategory( SUBCAT_SOUT_VOD )
  86     set_capability( "vod server", 1 )
  87     set_callbacks( Open, Close )
  88     add_shortcut( "rtsp" )
  89     add_string ( "rtsp-host", NULL, NULL, HOST_TEXT, HOST_LONGTEXT, true )
  90     add_string( "rtsp-raw-mux", "ts", NULL, RAWMUX_TEXT,
  91                 RAWMUX_TEXT, true )
  92     add_integer( "rtsp-throttle-users", 0, NULL, THROTTLE_TEXT,
  93                  THROTTLE_LONGTEXT, true )
  94     add_integer( "rtsp-session-timeout", 5, NULL, SESSION_TIMEOUT_TEXT,
  95                  SESSION_TIMEOUT_LONGTEXT, true )
  96 vlc_module_end ()
  97
  98 /*****************************************************************************
  99  * Exported prototypes
 100  *****************************************************************************/
 101
 102 typedef struct media_es_t media_es_t;
 103
 104 typedef struct
 105 {
 106     media_es_t *p_media_es;
 107     int i_port;
 108
 109 } rtsp_client_es_t;
 110
 111 typedef struct
 112 {
 113     char *psz_session;
 114
 115     bool b_playing; /* is it in "play" state */
 116     bool b_paused; /* is it in "pause" state */
 117
 118     int i_es;
 119     rtsp_client_es_t **es;
 120
 121 } rtsp_client_t;
 122
 123 struct media_es_t
 124 {
 125     /* VoD server */
 126     vod_t *p_vod;
 127
 128     /* RTSP server */
 129     httpd_url_t *p_rtsp_url;
 130
 131     vod_media_t *p_media;
 132
 133     es_format_t fmt;
 134     uint8_t     i_payload_type;
 135     const char  *psz_ptname;
 136     unsigned    i_clock_rate;
 137     unsigned    i_channels;
 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     vlc_mutex_t lock;
 158
 159     /* ES list */
 160     int        i_es;
 161     media_es_t **es;
 162     const char *psz_mux;
 163     bool  b_raw;
 164
 165     /* RTSP client */
 166     int           i_rtsp;
 167     rtsp_client_t **rtsp;
 168
 169     /* Infos */
 170     mtime_t i_length;
 171 };
 172
 173 struct vod_sys_t
 174 {
 175     /* RTSP server */
 176     httpd_host_t *p_rtsp_host;
 177     char *psz_path;
 178     int i_port;
 179     int i_throttle_users;
 180     int i_connections;
 181
 182     char *psz_raw_mux;
 183
 184     int i_session_timeout;
 185
 186     /* List of media */
 187     int i_media_id;
 188     int i_media;
 189     vod_media_t **media;
 190
 191     /* */
 192     block_fifo_t *p_fifo_cmd;
 193 };
 194
 195 /* rtsp delayed command (to avoid deadlock between vlm/httpd) */
 196 typedef enum
 197 {
 198     RTSP_CMD_TYPE_NONE,  /* Exit requested */
 199
 200     RTSP_CMD_TYPE_PLAY,
 201     RTSP_CMD_TYPE_PAUSE,
 202     RTSP_CMD_TYPE_STOP,
 203     RTSP_CMD_TYPE_SEEK,
 204     RTSP_CMD_TYPE_REWIND,
 205     RTSP_CMD_TYPE_FORWARD,
 206
 207     RTSP_CMD_TYPE_ADD,
 208     RTSP_CMD_TYPE_DEL,
 209 } rtsp_cmd_type_t;
 210
 211 /* */
 212 typedef struct
 213 {
 214     int i_type;
 215     int i_media_id;
 216     vod_media_t *p_media;
 217     char *psz_session;
 218     char *psz_arg;
 219     double f_arg;
 220 } rtsp_cmd_t;
 221
 222 static vod_media_t *MediaNew( vod_t *, const char *, input_item_t * );
 223 static void         MediaDel( vod_t *, vod_media_t * );
 224 static void         MediaAskDel ( vod_t *, vod_media_t * );
 225 static int          MediaAddES( vod_t *, vod_media_t *, es_format_t * );
 226 static void         MediaDelES( vod_t *, vod_media_t *, es_format_t * );
 227
 228 static void* CommandThread( vlc_object_t *p_this );
 229 static void  CommandPush( vod_t *, rtsp_cmd_type_t, vod_media_t *, const char *psz_session,
 230                           double f_arg, const char *psz_arg );
 231
 232 static rtsp_client_t *RtspClientNew( vod_media_t *, char * );
 233 static rtsp_client_t *RtspClientGet( vod_media_t *, const char * );
 234 static void           RtspClientDel( vod_media_t *, rtsp_client_t * );
 235
 236 static int RtspCallback( httpd_callback_sys_t *, httpd_client_t *,
 237                          httpd_message_t *, const httpd_message_t * );
 238 static int RtspCallbackES( httpd_callback_sys_t *, httpd_client_t *,
 239                            httpd_message_t *, const httpd_message_t * );
 240
 241 static char *SDPGenerate( const vod_media_t *, httpd_client_t *cl );
 242
 243 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
 244 {
 245     static const char hex[16] = "0123456789abcdef";
 246     int i;
 247
 248     for( i = 0; i < i_data; i++ )
 249     {
 250         s[2*i+0] = hex[(p_data[i]>>4)&0xf];
 251         s[2*i+1] = hex[(p_data[i]   )&0xf];
 252     }
 253     s[2*i_data] = '\0';
 254 }
 255
 256 /*****************************************************************************
 257  * Open: Starts the RTSP server module
 258  *****************************************************************************/
 259 static int Open( vlc_object_t *p_this )
 260 {
 261     vod_t *p_vod = (vod_t *)p_this;
 262     vod_sys_t *p_sys = NULL;
 263     char *psz_url = NULL;
 264     vlc_url_t url;
 265
 266     psz_url = var_InheritString( p_vod, "rtsp-host" );
 267     vlc_UrlParse( &url, psz_url, 0 );
 268     free( psz_url );
 269
 270     if( url.i_port <= 0 ) url.i_port = 554;
 271
 272     p_vod->p_sys = p_sys = malloc( sizeof( vod_sys_t ) );
 273     if( !p_sys ) goto error;
 274     p_sys->p_rtsp_host = 0;
 275
 276     p_sys->i_session_timeout = var_CreateGetInteger( p_this, "rtsp-session-timeout" );
 277
 278     p_sys->i_throttle_users = var_CreateGetInteger( p_this, "rtsp-throttle-users" );
 279     msg_Dbg( p_this, "allowing up to %d connections", p_sys->i_throttle_users );
 280     p_sys->i_connections = 0;
 281
 282     p_sys->psz_raw_mux = var_CreateGetString( p_this, "rtsp-raw-mux" );
 283
 284     p_sys->p_rtsp_host =
 285         httpd_HostNew( VLC_OBJECT(p_vod), url.psz_host, url.i_port );
 286     if( !p_sys->p_rtsp_host )
 287     {
 288         msg_Err( p_vod, "cannot create RTSP server (%s:%i)",
 289                  url.psz_host, url.i_port );
 290         goto error;
 291     }
 292
 293     p_sys->psz_path = strdup( url.psz_path ? url.psz_path : "/" );
 294     p_sys->i_port = url.i_port;
 295
 296     vlc_UrlClean( &url );
 297
 298     TAB_INIT( p_sys->i_media, p_sys->media );
 299     p_sys->i_media_id = 0;
 300
 301     p_vod->pf_media_new = MediaNew;
 302     p_vod->pf_media_del = MediaAskDel;
 303     p_vod->pf_media_add_es = MediaAddES;
 304     p_vod->pf_media_del_es = MediaDelES;
 305
 306     p_sys->p_fifo_cmd = block_FifoNew();
 307     if( vlc_thread_create( p_vod, "rtsp vod thread", CommandThread,
 308                            VLC_THREAD_PRIORITY_LOW ) )
 309     {
 310         msg_Err( p_vod, "cannot spawn rtsp vod thread" );
 311         block_FifoRelease( p_sys->p_fifo_cmd );
 312         free( p_sys->psz_path );
 313         goto error;
 314     }
 315
 316     return VLC_SUCCESS;
 317
 318 error:
 319     if( p_sys )
 320     {
 321         if( p_sys->p_rtsp_host ) httpd_HostDelete( p_sys->p_rtsp_host );
 322         free( p_sys->psz_raw_mux );
 323         free( p_sys );
 324     }
 325     vlc_UrlClean( &url );
 326
 327     return VLC_EGENERIC;
 328 }
 329
 330 /*****************************************************************************
 331  * Close:
 332  *****************************************************************************/
 333 static void Close( vlc_object_t * p_this )
 334 {
 335     vod_t *p_vod = (vod_t *)p_this;
 336     vod_sys_t *p_sys = p_vod->p_sys;
 337     block_t *p_block_cmd;
 338     rtsp_cmd_t cmd;
 339
 340     /* Stop command thread */
 341     vlc_object_kill( p_vod );
 342     CommandPush( p_vod, RTSP_CMD_TYPE_NONE, NULL, NULL, 0.0, NULL );
 343     vlc_thread_join( p_vod );
 344
 345     while( block_FifoCount( p_sys->p_fifo_cmd ) > 0 )
 346     {
 347          p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 348          memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 349          block_Release( p_block_cmd );
 350          if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 351              MediaDel(p_vod, cmd.p_media);
 352          free( cmd.psz_session );
 353          free( cmd.psz_arg );
 354     }
 355     block_FifoRelease( p_sys->p_fifo_cmd );
 356
 357     httpd_HostDelete( p_sys->p_rtsp_host );
 358     var_Destroy( p_this, "rtsp-session-timeout" );
 359     var_Destroy( p_this, "rtsp-throttle-users" );
 360     var_Destroy( p_this, "rtsp-raw-mux" );
 361
 362     /* Check VLM is not buggy */
 363     if( p_sys->i_media > 0 )
 364         msg_Err( p_vod, "rtsp vod leaking %d medias", p_sys->i_media );
 365     TAB_CLEAN( p_sys->i_media, p_sys->media );
 366
 367     free( p_sys->psz_path );
 368     free( p_sys->psz_raw_mux );
 369     free( p_sys );
 370 }
 371
 372 /*****************************************************************************
 373  * Media handling
 374  *****************************************************************************/
 375 static vod_media_t *MediaNew( vod_t *p_vod, const char *psz_name,
 376                               input_item_t *p_item )
 377 {
 378     int i;
 379     vod_sys_t *p_sys = p_vod->p_sys;
 380
 381     vod_media_t *p_media = calloc( 1, sizeof(vod_media_t) );
 382     if( !p_media )
 383         return NULL;
 384
 385     p_media->id = p_sys->i_media_id++;
 386     TAB_INIT( p_media->i_es, p_media->es );
 387     p_media->psz_mux = NULL;
 388     TAB_INIT( p_media->i_rtsp, p_media->rtsp );
 389     p_media->b_raw = false;
 390
 391     if( asprintf( &p_media->psz_rtsp_path, "%s%s",
 392                   p_sys->psz_path, psz_name ) <0 )
 393         return NULL;
 394     p_media->p_rtsp_url =
 395         httpd_UrlNewUnique( p_sys->p_rtsp_host, p_media->psz_rtsp_path, NULL,
 396                             NULL, NULL );
 397
 398     if( !p_media->p_rtsp_url )
 399     {
 400         msg_Err( p_vod, "cannot create RTSP url (%s)", p_media->psz_rtsp_path);
 401         free( p_media->psz_rtsp_path );
 402         free( p_media );
 403         return NULL;
 404     }
 405
 406     msg_Dbg( p_vod, "created RTSP url: %s", p_media->psz_rtsp_path );
 407
 408     if( asprintf( &p_media->psz_rtsp_control_v4,
 409                "rtsp://%%s:%d%s/trackID=%%d",
 410                p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 411     {
 412         httpd_UrlDelete( p_media->p_rtsp_url );
 413         free( p_media->psz_rtsp_path );
 414         free( p_media );
 415         return NULL;
 416     }
 417     if( asprintf( &p_media->psz_rtsp_control_v6,
 418                "rtsp://[%%s]:%d%s/trackID=%%d",
 419               p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 420     {
 421         httpd_UrlDelete( p_media->p_rtsp_url );
 422         free( p_media->psz_rtsp_path );
 423         free( p_media );
 424         return NULL;
 425     }
 426
 427     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_SETUP,
 428                     RtspCallback, (void*)p_media );
 429     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_DESCRIBE,
 430                     RtspCallback, (void*)p_media );
 431     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PLAY,
 432                     RtspCallback, (void*)p_media );
 433     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PAUSE,
 434                     RtspCallback, (void*)p_media );
 435     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_GETPARAMETER,
 436                     RtspCallback, (void*)p_media );
 437     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 438                     RtspCallback, (void*)p_media );
 439
 440     p_media->p_vod = p_vod;
 441
 442     vlc_mutex_init( &p_media->lock );
 443
 444     p_media->i_payload_type = 96;
 445
 446     p_media->i_length = input_item_GetDuration( p_item );
 447
 448     vlc_mutex_lock( &p_item->lock );
 449     msg_Dbg( p_vod, "media has %i declared ES", p_item->i_es );
 450     for( i = 0; i < p_item->i_es; i++ )
 451     {
 452         MediaAddES( p_vod, p_media, p_item->es[i] );
 453     }
 454     vlc_mutex_unlock( &p_item->lock );
 455
 456     CommandPush( p_vod, RTSP_CMD_TYPE_ADD, p_media, NULL, 0.0, NULL );
 457     return p_media;
 458 }
 459
 460 static void MediaAskDel ( vod_t *p_vod, vod_media_t *p_media )
 461 {
 462     CommandPush( p_vod, RTSP_CMD_TYPE_DEL, p_media, NULL, 0.0, NULL );
 463 }
 464
 465 static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
 466 {
 467     vod_sys_t *p_sys = p_vod->p_sys;
 468
 469     msg_Dbg( p_vod, "deleting media: %s", p_media->psz_rtsp_path );
 470
 471     TAB_REMOVE( p_sys->i_media, p_sys->media, p_media );
 472
 473     httpd_UrlDelete( p_media->p_rtsp_url );
 474
 475     while( p_media->i_rtsp > 0 )
 476         RtspClientDel( p_media, p_media->rtsp[0] );
 477     TAB_CLEAN( p_media->i_rtsp, p_media->rtsp );
 478
 479     free( p_media->psz_rtsp_path );
 480     free( p_media->psz_rtsp_control_v6 );
 481     free( p_media->psz_rtsp_control_v4 );
 482
 483     while( p_media->i_es )
 484         MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );
 485     TAB_CLEAN( p_media->i_es, p_media->es );
 486
 487     vlc_mutex_destroy( &p_media->lock );
 488
 489     free( p_media );
 490 }
 491
 492 static int MediaAddES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt )
 493 {
 494     char *psz_urlc;
 495     media_es_t *p_es = calloc( 1, sizeof(media_es_t) );
 496     if( !p_es )
 497         return VLC_ENOMEM;
 498
 499     p_media->psz_mux = NULL;
 500
 501     /* TODO: update SDP, etc... */
 502     if( asprintf( &psz_urlc, "%s/trackID=%d",
 503               p_media->psz_rtsp_path, p_media->i_es ) < 0 )
 504     {
 505         free( p_es );
 506         return VLC_ENOMEM;
 507     }
 508     msg_Dbg( p_vod, "  - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
 509
 510     p_es->i_clock_rate = 90000;
 511     p_es->i_channels = 1;
 512
 513     switch( p_fmt->i_codec )
 514     {
 515         case VLC_CODEC_S16B:
 516             if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
 517             {
 518                 p_es->i_payload_type = 11;
 519             }
 520             else if( p_fmt->audio.i_channels == 2 &&
 521                      p_fmt->audio.i_rate == 44100 )
 522             {
 523                 p_es->i_payload_type = 10;
 524             }
 525             else
 526             {
 527                 p_es->i_payload_type = p_media->i_payload_type++;
 528             }
 529             p_es->psz_ptname = "L16";
 530             p_es->i_clock_rate = p_fmt->audio.i_rate;
 531             p_es->i_channels = p_fmt->audio.i_channels;
 532             break;
 533         case VLC_CODEC_U8:
 534             p_es->i_payload_type = p_media->i_payload_type++;
 535             p_es->psz_ptname = "L8";
 536             p_es->i_clock_rate = p_fmt->audio.i_rate;
 537             p_es->i_channels = p_fmt->audio.i_channels;
 538             break;
 539         case VLC_CODEC_MPGA:
 540             p_es->i_payload_type = 14;
 541             p_es->psz_ptname = "MPA";
 542             break;
 543         case VLC_CODEC_MPGV:
 544             p_es->i_payload_type = 32;
 545             p_es->psz_ptname = "MPV";
 546             break;
 547         case VLC_CODEC_A52:
 548             p_es->i_payload_type = p_media->i_payload_type++;
 549             p_es->psz_ptname = "ac3";
 550             p_es->i_clock_rate = p_fmt->audio.i_rate;
 551             break;
 552         case VLC_CODEC_H263:
 553             p_es->i_payload_type = p_media->i_payload_type++;
 554             p_es->psz_ptname = "H263-1998";
 555             break;
 556         case VLC_CODEC_H264:
 557             p_es->i_payload_type = p_media->i_payload_type++;
 558             p_es->psz_ptname = "H264";
 559             p_es->psz_fmtp = NULL;
 560             /* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
 561             if( p_fmt->i_extra > 0 )
 562             {
 563                 uint8_t *p_buffer = p_fmt->p_extra;
 564                 int     i_buffer = p_fmt->i_extra;
 565                 char    *p_64_sps = NULL;
 566                 char    *p_64_pps = NULL;
 567                 char    hexa[6+1];
 568
 569                 while( i_buffer > 4 &&
 570                        p_buffer[0] == 0 && p_buffer[1] == 0 &&
 571                        p_buffer[2] == 0 && p_buffer[3] == 1 )
 572                 {
 573                     const int i_nal_type = p_buffer[4]&0x1f;
 574                     int i_offset;
 575                     int i_size      = 0;
 576
 577                     i_size = i_buffer;
 578                     for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
 579                     {
 580                         if( p_buffer[i_offset] == 0 && p_buffer[i_offset+1] == 0 && p_buffer[i_offset+2] == 0 && p_buffer[i_offset+3] == 1 )
 581                         {
 582                             /* we found another startcode */
 583                             i_size = i_offset;
 584                             break;
 585                         }
 586                     }
 587                     if( i_nal_type == 7 )
 588                     {
 589                         free( p_64_sps );
 590                         p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 591                         sprintf_hexa( hexa, &p_buffer[5], 3 );
 592                     }
 593                     else if( i_nal_type == 8 )
 594                     {
 595                         free( p_64_pps );
 596                         p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 597                     }
 598                     i_buffer -= i_size;
 599                     p_buffer += i_size;
 600                 }
 601                 /* */
 602                 if( p_64_sps && p_64_pps )
 603                 {
 604                     if( asprintf( &p_es->psz_fmtp,
 605                                   "packetization-mode=1;profile-level-id=%s;"
 606                                   "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
 607                                   p_64_pps ) < 0 )
 608                     {
 609                         free( p_64_sps );
 610                         free( p_64_pps );
 611                         free( psz_urlc );
 612                         free( p_es );
 613                         return VLC_ENOMEM;
 614                     }
 615                 }
 616                 free( p_64_sps );
 617                 free( p_64_pps );
 618             }
 619             if( !p_es->psz_fmtp )
 620                 p_es->psz_fmtp = strdup( "packetization-mode=1" );
 621             break;
 622         case VLC_CODEC_MP4V:
 623             p_es->i_payload_type = p_media->i_payload_type++;
 624             p_es->psz_ptname = "MP4V-ES";
 625             if( p_fmt->i_extra > 0 )
 626             {
 627                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 628                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 629                 if( asprintf( &p_es->psz_fmtp,
 630                               "profile-level-id=3; config=%s;", p_hexa ) == -1 )
 631                     p_es->psz_fmtp = NULL;
 632                 free( p_hexa );
 633             }
 634             break;
 635         case VLC_CODEC_MP4A:
 636             p_es->i_payload_type = p_media->i_payload_type++;
 637             p_es->psz_ptname = "mpeg4-generic";
 638             p_es->i_clock_rate = p_fmt->audio.i_rate;
 639             if( p_fmt->i_extra > 0 )
 640             {
 641                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 642                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 643                 if( asprintf( &p_es->psz_fmtp,
 644                               "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
 645                               "config=%s; SizeLength=13;IndexLength=3; "
 646                               "IndexDeltaLength=3; Profile=1;", p_hexa ) == -1 )
 647                     p_es->psz_fmtp = NULL;
 648                 free( p_hexa );
 649             }
 650             break;
 651         case VLC_FOURCC( 'm', 'p', '2', 't' ):
 652             p_media->psz_mux = "ts";
 653             p_es->i_payload_type = 33;
 654             p_es->psz_ptname = "MP2T";
 655             break;
 656         case VLC_FOURCC( 'm', 'p', '2', 'p' ):
 657             p_media->psz_mux = "ps";
 658             p_es->i_payload_type = p_media->i_payload_type++;
 659             p_es->psz_ptname = "MP2P";
 660             break;
 661         case VLC_CODEC_AMR_NB:
 662             p_es->i_payload_type = p_media->i_payload_type++;
 663             p_es->psz_ptname = "AMR";
 664             p_es->i_clock_rate = 8000;
 665             if(p_fmt->audio.i_channels == 2 )
 666                 p_es->i_channels = 2;
 667             p_es->psz_fmtp = strdup( "octet-align=1" );
 668             break;
 669         case VLC_CODEC_AMR_WB:
 670             p_es->i_payload_type = p_media->i_payload_type++;
 671             p_es->psz_ptname = "AMR-WB";
 672             p_es->i_clock_rate = 16000;
 673             if(p_fmt->audio.i_channels == 2 )
 674                 p_es->i_channels = 2;
 675             p_es->psz_fmtp = strdup( "octet-align=1" );
 676             break;
 677
 678         default:
 679             msg_Err( p_vod, "cannot add this stream (unsupported "
 680                     "codec: %4.4s)", (char*)&p_fmt->i_codec );
 681             free( psz_urlc );
 682             free( p_es );
 683             return VLC_EGENERIC;
 684     }
 685
 686     p_es->p_rtsp_url =
 687         httpd_UrlNewUnique( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL,
 688                             NULL );
 689
 690     if( !p_es->p_rtsp_url )
 691     {
 692         msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
 693         free( psz_urlc );
 694         free( p_es );
 695         return VLC_EGENERIC;
 696     }
 697     free( psz_urlc );
 698
 699     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
 700                     RtspCallbackES, (void*)p_es );
 701     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 702                     RtspCallbackES, (void*)p_es );
 703     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
 704                     RtspCallbackES, (void*)p_es );
 705     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
 706                     RtspCallbackES, (void*)p_es );
 707
 708     es_format_Copy( &p_es->fmt, p_fmt );
 709     p_es->p_vod = p_vod;
 710     p_es->p_media = p_media;
 711
 712     vlc_mutex_lock( &p_media->lock );
 713     TAB_APPEND( p_media->i_es, p_media->es, p_es );
 714     vlc_mutex_unlock( &p_media->lock );
 715
 716     return VLC_SUCCESS;
 717 }
 718
 719 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
 720 {
 721     media_es_t *p_es = NULL;
 722     int i;
 723
 724     /* Find the ES */
 725     for( i = 0; i < p_media->i_es; i++ )
 726     {
 727         if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
 728             p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
 729             p_media->es[i]->fmt.i_id == p_fmt->i_id )
 730         {
 731             p_es = p_media->es[i];
 732         }
 733     }
 734     if( !p_es ) return;
 735
 736     msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );
 737
 738     vlc_mutex_lock( &p_media->lock );
 739     TAB_REMOVE( p_media->i_es, p_media->es, p_es );
 740     vlc_mutex_unlock( &p_media->lock );
 741
 742     free( p_es->psz_fmtp );
 743
 744     if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
 745     es_format_Clean( &p_es->fmt );
 746     free( p_es );
 747 }
 748
 749 static void CommandPush( vod_t *p_vod, rtsp_cmd_type_t i_type, vod_media_t *p_media, const char *psz_session,
 750                          double f_arg, const char *psz_arg )
 751 {
 752     rtsp_cmd_t cmd;
 753     block_t *p_cmd;
 754
 755     memset( &cmd, 0, sizeof(cmd) );
 756     cmd.i_type = i_type;
 757     cmd.p_media = p_media;
 758     if( p_media )
 759         cmd.i_media_id = p_media->id;
 760     if( psz_session )
 761         cmd.psz_session = strdup(psz_session);
 762     cmd.f_arg = f_arg;
 763     if( psz_arg )
 764         cmd.psz_arg = strdup(psz_arg);
 765
 766     p_cmd = block_New( p_vod, sizeof(rtsp_cmd_t) );
 767     memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
 768
 769     block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
 770 }
 771
 772 static void* CommandThread( vlc_object_t *p_this )
 773 {
 774     vod_t *p_vod = (vod_t*)p_this;
 775     vod_sys_t *p_sys = p_vod->p_sys;
 776     int canc = vlc_savecancel ();
 777
 778     while( vlc_object_alive (p_vod) )
 779     {
 780         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 781         rtsp_cmd_t cmd;
 782         vod_media_t *p_media = NULL;
 783         int i;
 784
 785         if( !p_block_cmd )
 786             break;
 787
 788         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 789         block_Release( p_block_cmd );
 790
 791         if( cmd.i_type == RTSP_CMD_TYPE_NONE )
 792             break;
 793
 794         if ( cmd.i_type == RTSP_CMD_TYPE_ADD )
 795         {
 796             TAB_APPEND( p_sys->i_media, p_sys->media, cmd.p_media );
 797             goto next;
 798         }
 799
 800         if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 801         {
 802             MediaDel(p_vod, cmd.p_media);
 803             goto next;
 804         }
 805
 806         /* */
 807         for( i = 0; i < p_sys->i_media; i++ )
 808         {
 809             if( p_sys->media[i]->id == cmd.i_media_id )
 810                 break;
 811         }
 812         if( i >= p_sys->i_media )
 813         {
 814             goto next;
 815         }
 816         p_media = p_sys->media[i];
 817
 818         switch( cmd.i_type )
 819         {
 820         case RTSP_CMD_TYPE_PLAY:
 821             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 822                               VOD_MEDIA_PLAY, cmd.psz_arg );
 823             break;
 824         case RTSP_CMD_TYPE_PAUSE:
 825             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 826                               VOD_MEDIA_PAUSE );
 827             break;
 828
 829         case RTSP_CMD_TYPE_STOP:
 830             vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
 831             break;
 832
 833         case RTSP_CMD_TYPE_SEEK:
 834             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 835                               VOD_MEDIA_SEEK, cmd.f_arg );
 836             break;
 837
 838         case RTSP_CMD_TYPE_REWIND:
 839             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 840                               VOD_MEDIA_REWIND, cmd.f_arg );
 841             break;
 842
 843         case RTSP_CMD_TYPE_FORWARD:
 844             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 845                               VOD_MEDIA_FORWARD, cmd.f_arg );
 846             break;
 847
 848         default:
 849             break;
 850         }
 851
 852     next:
 853         free( cmd.psz_session );
 854         free( cmd.psz_arg );
 855     }
 856
 857     vlc_restorecancel (canc);
 858     return NULL;
 859 }
 860
 861 /****************************************************************************
 862  * RTSP server implementation
 863  ****************************************************************************/
 864 static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
 865 {
 866     rtsp_client_t *p_rtsp = calloc( 1, sizeof(rtsp_client_t) );
 867
 868     if( !p_rtsp )
 869         return NULL;
 870     p_rtsp->es = 0;
 871
 872     p_rtsp->psz_session = psz_session;
 873     TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 874
 875     p_media->p_vod->p_sys->i_connections++;
 876     msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
 877              psz_session, p_media->p_vod->p_sys->i_throttle_users );
 878
 879     return p_rtsp;
 880 }
 881
 882 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
 883 {
 884     int i;
 885
 886     for( i = 0; psz_session && i < p_media->i_rtsp; i++ )
 887     {
 888         if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
 889             return p_media->rtsp[i];
 890     }
 891
 892     return NULL;
 893 }
 894
 895 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
 896 {
 897     p_media->p_vod->p_sys->i_connections--;
 898     msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
 899              p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
 900
 901     while( p_rtsp->i_es )
 902     {
 903         p_rtsp->i_es--;
 904         free( p_rtsp->es[p_rtsp->i_es] );
 905     }
 906     free( p_rtsp->es );
 907
 908     TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 909
 910     free( p_rtsp->psz_session );
 911     free( p_rtsp );
 912 }
 913
 914
 915 static float ParseNPT (const char *str)
 916 {
 917      locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
 918      locale_t oldloc = uselocale (loc);
 919      unsigned hour, min;
 920      float sec;
 921
 922      if (sscanf (str, "%u:%u:%f", &hour, &min, &sec) == 3)
 923          sec += ((hour * 60) + min) * 60;
 924      else
 925      if (sscanf (str, "%f", &sec) != 1)
 926          sec = 0.;
 927
 928      if (loc != (locale_t)0)
 929      {
 930          uselocale (oldloc);
 931          freelocale (loc);
 932      }
 933      return sec;
 934 }
 935
 936
 937 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
 938                          httpd_message_t *answer, const httpd_message_t *query )
 939 {
 940     vod_media_t *p_media = (vod_media_t*)p_args;
 941     vod_t *p_vod = p_media->p_vod;
 942     const char *psz_transport = NULL;
 943     const char *psz_playnow = NULL; /* support option: x-playNow */
 944     const char *psz_session = NULL;
 945     const char *psz_cseq = NULL;
 946     rtsp_client_t *p_rtsp;
 947     int i_port = 0;
 948     int i_cseq = 0;
 949
 950     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
 951
 952     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
 953
 954     answer->i_proto   = HTTPD_PROTO_RTSP;
 955     answer->i_version = query->i_version;
 956     answer->i_type    = HTTPD_MSG_ANSWER;
 957     answer->i_body    = 0;
 958     answer->p_body    = NULL;
 959
 960     switch( query->i_type )
 961     {
 962         case HTTPD_MSG_SETUP:
 963         {
 964             psz_playnow = httpd_MsgGet( query, "x-playNow" );
 965             psz_transport = httpd_MsgGet( query, "Transport" );
 966             if( psz_transport == NULL )
 967             {
 968                 answer->i_status = 400;
 969                 break;
 970             }
 971             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
 972
 973             if( strstr( psz_transport, "unicast" ) &&
 974                 strstr( psz_transport, "client_port=" ) )
 975             {
 976                 rtsp_client_t *p_rtsp = NULL;
 977                 char ip[NI_MAXNUMERICHOST];
 978                 i_port = atoi( strstr( psz_transport, "client_port=" ) +
 979                                 strlen("client_port=") );
 980
 981                 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
 982                     strstr( psz_transport, "RAW/RAW/UDP" ) )
 983                 {
 984                     p_media->psz_mux = p_vod->p_sys->psz_raw_mux;
 985                     p_media->b_raw = true;
 986                 }
 987
 988                 if( httpd_ClientIP( cl, ip ) == NULL )
 989                 {
 990                     answer->i_status = 500;
 991                     answer->i_body = 0;
 992                     answer->p_body = NULL;
 993                     break;
 994                 }
 995
 996                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
 997                          ip, i_port );
 998
 999                 psz_session = httpd_MsgGet( query, "Session" );
1000                 if( !psz_session || !*psz_session )
1001                 {
1002                     char *psz_new;
1003                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1004                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1005                     {
1006                         answer->i_status = 503;
1007                         answer->i_body = 0;
1008                         answer->p_body = NULL;
1009                         break;
1010                     }
1011 #warning Should use secure randomness here! (spoofing risk)
1012                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1013                         return VLC_ENOMEM;
1014                     psz_session = psz_new;
1015
1016                     p_rtsp = RtspClientNew( p_media, psz_new );
1017                     if( !p_rtsp )
1018                     {
1019                         answer->i_status = 454;
1020                         answer->i_body = 0;
1021                         answer->p_body = NULL;
1022                         break;
1023                     }
1024                 }
1025                 else
1026                 {
1027                     p_rtsp = RtspClientGet( p_media, psz_session );
1028                     if( !p_rtsp )
1029                     {
1030                         answer->i_status = 454;
1031                         answer->i_body = 0;
1032                         answer->p_body = NULL;
1033                         break;
1034                     }
1035                 }
1036
1037                 answer->i_status = 200;
1038                 answer->i_body = 0;
1039                 answer->p_body = NULL;
1040
1041                 if( p_media->b_raw )
1042                 {
1043                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1044                     {
1045                         httpd_MsgAdd( answer, "Transport",
1046                                       "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1047                                       i_port, i_port + 1 );
1048                     }
1049                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1050                     {
1051                         httpd_MsgAdd( answer, "Transport",
1052                                       "RAW/RAW/UDP;unicast;client_port=%d-%d",
1053                                       i_port, i_port + 1 );
1054                     }
1055                 }
1056                 else
1057                     httpd_MsgAdd( answer, "Transport",
1058                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1059                                   i_port, i_port + 1 );
1060             }
1061             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1062             {
1063                 answer->i_status = 461;
1064                 answer->i_body = 0;
1065                 answer->p_body = NULL;
1066             }
1067
1068             /* Intentional fall-through on x-playNow option in RTSP request */
1069             if( !psz_playnow )
1070                 break;
1071         }
1072
1073         case HTTPD_MSG_PLAY:
1074         {
1075             char *psz_output, ip[NI_MAXNUMERICHOST];
1076             int i, i_port_audio = 0, i_port_video = 0;
1077
1078             /* for now only multicast so easy */
1079             if( !psz_playnow )
1080             {
1081                 answer->i_status = 200;
1082                 answer->i_body = 0;
1083                 answer->p_body = NULL;
1084             }
1085
1086             if( !psz_session )
1087                 psz_session = httpd_MsgGet( query, "Session" );
1088             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1089
1090             p_rtsp = RtspClientGet( p_media, psz_session );
1091             if( !p_rtsp )
1092             {
1093                 answer->i_status = 500;
1094                 answer->i_body = 0;
1095                 answer->p_body = NULL;
1096                 break;
1097             }
1098
1099             if( p_rtsp->b_playing )
1100             {
1101                 const char *psz_position = httpd_MsgGet( query, "Range" );
1102                 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1103                 if( psz_position )
1104                     psz_position = strstr( psz_position, "npt=" );
1105                 if( psz_position && !psz_scale )
1106                 {
1107                     double f_pos = ParseNPT (psz_position + 4);
1108                     msg_Dbg( p_vod, "seeking request: %s", psz_position );
1109                     f_pos /= ((double)(p_media->i_length))/1000 /1000 / 100;
1110                     CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1111                                  psz_session, f_pos, NULL );
1112                 }
1113                 else if( psz_scale )
1114                 {
1115                     double f_scale = 0.0;
1116                     char *end;
1117
1118                     f_scale = us_strtod( psz_scale, &end );
1119                     if( end > psz_scale )
1120                     {
1121                         f_scale = (f_scale * 30.0);
1122                         if( psz_scale[0] == '-' ) /* rewind */
1123                         {
1124                             msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1125                             CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
1126                                          psz_session, f_scale, NULL );
1127                         }
1128                         else if(psz_scale[0] != '1' ) /* fast-forward */
1129                         {
1130                             msg_Dbg( p_vod, "fastforward request: %s",
1131                                      psz_scale );
1132                             CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
1133                                          psz_session, f_scale, NULL );
1134                         }
1135
1136                         if( p_rtsp->b_paused )
1137                         {
1138                             p_rtsp->b_paused = false;
1139                             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1140                                          psz_session, 0, NULL );
1141                         }
1142                     }
1143                     break;
1144                 }
1145             }
1146
1147             if( p_rtsp->b_playing && p_rtsp->b_paused )
1148             {
1149                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1150                              psz_session, 0, NULL );
1151                 p_rtsp->b_paused = false;
1152                 break;
1153             }
1154             else if( p_rtsp->b_playing ) break;
1155
1156             if( httpd_ClientIP( cl, ip ) == NULL ) break;
1157
1158             p_rtsp->b_playing = true;
1159
1160             /* FIXME for != 1 video and 1 audio */
1161             for( i = 0; i < p_rtsp->i_es; i++ )
1162             {
1163                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1164                     i_port_audio = p_rtsp->es[i]->i_port;
1165                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1166                     i_port_video = p_rtsp->es[i]->i_port;
1167             }
1168
1169             if( p_media->psz_mux )
1170             {
1171                 if( p_media->b_raw )
1172                 {
1173                     if( asprintf( &psz_output,
1174                               "std{access=udp,dst=%s:%i,mux=%s}",
1175                               ip, i_port, p_media->psz_mux ) < 0 )
1176                         return VLC_ENOMEM;
1177                 }
1178                 else
1179                 {
1180                     if( asprintf( &psz_output,
1181                               "rtp{dst=%s,port=%i,mux=%s}",
1182                               ip, i_port_video, p_media->psz_mux ) < 0 )
1183                         return VLC_ENOMEM;
1184                 }
1185             }
1186             else
1187             {
1188                 if( asprintf( &psz_output,
1189                               "rtp{dst=%s,port-video=%i,port-audio=%i}",
1190                               ip, i_port_video, i_port_audio ) < 0 )
1191                     return VLC_ENOMEM;
1192             }
1193
1194             CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1195                          0, psz_output );
1196             free( psz_output );
1197             break;
1198         }
1199
1200         case HTTPD_MSG_DESCRIBE:
1201         {
1202             char *psz_sdp =
1203                 SDPGenerate( p_media, cl );
1204
1205             if( psz_sdp != NULL )
1206             {
1207                 answer->i_status = 200;
1208                 httpd_MsgAdd( answer, "Content-type",  "%s",
1209                               "application/sdp" );
1210
1211                 answer->p_body = (uint8_t *)psz_sdp;
1212                 answer->i_body = strlen( psz_sdp );
1213             }
1214             else
1215             {
1216                 answer->i_status = 500;
1217                 answer->p_body = NULL;
1218                 answer->i_body = 0;
1219             }
1220             break;
1221         }
1222
1223         case HTTPD_MSG_PAUSE:
1224             psz_session = httpd_MsgGet( query, "Session" );
1225             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1226
1227             p_rtsp = RtspClientGet( p_media, psz_session );
1228             if( !p_rtsp ) break;
1229
1230             if( !p_rtsp->b_paused )
1231             {
1232                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1233                              0, NULL );
1234                 p_rtsp->b_paused = true;
1235             }
1236
1237             answer->i_status = 200;
1238             answer->i_body = 0;
1239             answer->p_body = NULL;
1240             break;
1241
1242         case HTTPD_MSG_TEARDOWN:
1243             /* for now only multicast so easy again */
1244             answer->i_status = 200;
1245             answer->i_body = 0;
1246             answer->p_body = NULL;
1247
1248             psz_session = httpd_MsgGet( query, "Session" );
1249             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1250
1251             p_rtsp = RtspClientGet( p_media, psz_session );
1252             if( !p_rtsp ) break;
1253
1254             CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1255                          0, NULL );
1256             RtspClientDel( p_media, p_rtsp );
1257             break;
1258
1259         case HTTPD_MSG_GETPARAMETER:
1260             answer->i_status = 200;
1261             answer->i_body = 0;
1262             answer->p_body = NULL;
1263             break;
1264
1265         default:
1266             return VLC_EGENERIC;
1267     }
1268
1269     httpd_MsgAdd( answer, "Server", "VLC Server" );
1270     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1271     psz_cseq = httpd_MsgGet( query, "Cseq" );
1272     psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1273     httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1274     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1275
1276     if( psz_session )
1277     {
1278          if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
1279              httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1280                p_media->p_vod->p_sys->i_session_timeout );
1281          else
1282               httpd_MsgAdd( answer, "Session", "%s", psz_session );
1283     }
1284
1285     return VLC_SUCCESS;
1286 }
1287
1288 static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1289                            httpd_message_t *answer,
1290                            const httpd_message_t *query )
1291 {
1292     media_es_t *p_es = (media_es_t*)p_args;
1293     vod_media_t *p_media = p_es->p_media;
1294     vod_t *p_vod = p_media->p_vod;
1295     rtsp_client_t *p_rtsp = NULL;
1296     const char *psz_transport = NULL;
1297     const char *psz_playnow = NULL; /* support option: x-playNow */
1298     const char *psz_session = NULL;
1299     const char *psz_position = NULL;
1300     const char *psz_cseq = NULL;
1301     int i_cseq = 0;
1302     int i;
1303
1304     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1305
1306     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1307
1308     answer->i_proto   = HTTPD_PROTO_RTSP;
1309     answer->i_version = query->i_version;
1310     answer->i_type    = HTTPD_MSG_ANSWER;
1311     answer->i_body    = 0;
1312     answer->p_body      = NULL;
1313
1314     switch( query->i_type )
1315     {
1316         case HTTPD_MSG_SETUP:
1317             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1318             psz_transport = httpd_MsgGet( query, "Transport" );
1319
1320             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1321
1322             if( strstr( psz_transport, "unicast" ) &&
1323                 strstr( psz_transport, "client_port=" ) )
1324             {
1325                 rtsp_client_t *p_rtsp = NULL;
1326                 rtsp_client_es_t *p_rtsp_es = NULL;
1327                 char ip[NI_MAXNUMERICHOST];
1328                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
1329                                    strlen("client_port=") );
1330
1331                 if( httpd_ClientIP( cl, ip ) == NULL )
1332                 {
1333                     answer->i_status = 500;
1334                     answer->i_body = 0;
1335                     answer->p_body = NULL;
1336                     break;
1337                 }
1338
1339                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1340                         ip, i_port );
1341
1342                 psz_session = httpd_MsgGet( query, "Session" );
1343                 if( !psz_session || !*psz_session )
1344                 {
1345                     char *psz_new;
1346                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1347                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1348                     {
1349                         answer->i_status = 503;
1350                         answer->i_body = 0;
1351                         answer->p_body = NULL;
1352                         break;
1353                     }
1354 #warning Session ID should be securely random (spoofing risk)
1355                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1356                         return VLC_ENOMEM;
1357                     psz_session = psz_new;
1358
1359                     p_rtsp = RtspClientNew( p_media, psz_new );
1360                     if( !p_rtsp )
1361                     {
1362                         answer->i_status = 454;
1363                         answer->i_body = 0;
1364                         answer->p_body = NULL;
1365                         break;
1366                     }
1367                 }
1368                 else
1369                 {
1370                     p_rtsp = RtspClientGet( p_media, psz_session );
1371                     if( !p_rtsp )
1372                     {
1373                         answer->i_status = 454;
1374                         answer->i_body = 0;
1375                         answer->p_body = NULL;
1376                         break;
1377                     }
1378                 }
1379
1380                 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1381                 if( !p_rtsp_es )
1382                 {
1383                     answer->i_status = 500;
1384                     answer->i_body = 0;
1385                     answer->p_body = NULL;
1386                     break;
1387                 }
1388                 p_rtsp_es->i_port = i_port;
1389                 p_rtsp_es->p_media_es = p_es;
1390                 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1391
1392                 answer->i_status = 200;
1393                 answer->i_body = 0;
1394                 answer->p_body = NULL;
1395
1396                 if( p_media->b_raw )
1397                 {
1398                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1399                     {
1400                         httpd_MsgAdd( answer, "Transport",
1401                                      "MP2T/H2221/UDP;client_port=%d-%d",
1402                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1403                     }
1404                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1405                     {
1406                         httpd_MsgAdd( answer, "Transport",
1407                                      "RAW/RAW/UDP;client_port=%d-%d",
1408                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1409                     }
1410                 }
1411                 else
1412                 {
1413                     httpd_MsgAdd( answer, "Transport",
1414                                   "RTP/AVP/UDP;client_port=%d-%d",
1415                                   p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1416                 }
1417             }
1418             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1419             {
1420                 answer->i_status = 461;
1421                 answer->i_body = 0;
1422                 answer->p_body = NULL;
1423             }
1424
1425             /* Intentional fall-through on x-playNow option in RTSP request */
1426             if( !psz_playnow )
1427                 break;
1428
1429         case HTTPD_MSG_PLAY:
1430             /* This is kind of a kludge. Should we only support Aggregate
1431              * Operations ? */
1432             psz_session = httpd_MsgGet( query, "Session" );
1433             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1434
1435             p_rtsp = RtspClientGet( p_media, psz_session );
1436
1437             psz_position = httpd_MsgGet( query, "Range" );
1438             if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1439             if( psz_position )
1440             {
1441                 double f_pos = ParseNPT (psz_position + 4);
1442                 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1443                 f_pos /= ((double)(p_media->i_length))/1000 /1000 / 100;
1444                 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1445                              psz_session, f_pos, NULL );
1446             }
1447
1448             if( !psz_playnow )
1449             {
1450                 answer->i_status = 200;
1451                 answer->i_body = 0;
1452                 answer->p_body = NULL;
1453             }
1454             break;
1455
1456         case HTTPD_MSG_TEARDOWN:
1457             answer->i_status = 200;
1458             answer->i_body = 0;
1459             answer->p_body = NULL;
1460
1461             psz_session = httpd_MsgGet( query, "Session" );
1462             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1463
1464             p_rtsp = RtspClientGet( p_media, psz_session );
1465             if( !p_rtsp ) break;
1466
1467             for( i = 0; i < p_rtsp->i_es; i++ )
1468             {
1469                 if( p_rtsp->es[i]->p_media_es == p_es )
1470                 {
1471                     TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, p_rtsp->es[i] );
1472                     break;
1473                 }
1474             }
1475
1476             if( !p_rtsp->i_es )
1477             {
1478                 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1479                              0, NULL );
1480                 RtspClientDel( p_media, p_rtsp );
1481             }
1482             break;
1483
1484         case HTTPD_MSG_PAUSE:
1485             /* This is kind of a kludge. Should we only support Aggregate
1486              * Operations ? */
1487             psz_session = httpd_MsgGet( query, "Session" );
1488             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1489
1490             p_rtsp = RtspClientGet( p_media, psz_session );
1491             if( !p_rtsp ) break;
1492
1493             if( !p_rtsp->b_paused )
1494             {
1495                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1496                              0, NULL );
1497                 p_rtsp->b_paused = true;
1498             }
1499
1500             answer->i_status = 200;
1501             answer->i_body = 0;
1502             answer->p_body = NULL;
1503             break;
1504
1505         default:
1506             return VLC_EGENERIC;
1507             break;
1508     }
1509
1510     httpd_MsgAdd( answer, "Server", "VLC Server" );
1511     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1512     psz_cseq = httpd_MsgGet( query, "Cseq" );
1513     if (psz_cseq)
1514         i_cseq = atoi( psz_cseq );
1515     else
1516         i_cseq = 0;
1517     httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1518     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1519
1520     if( psz_session )
1521         httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1522
1523     return VLC_SUCCESS;
1524 }
1525
1526 /*****************************************************************************
1527  * SDPGenerate: TODO
1528  * FIXME: need to be moved to a common place ?
1529  *****************************************************************************/
1530 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1531 {
1532     char *psz_sdp, ip[NI_MAXNUMERICHOST];
1533     const char *psz_control;
1534
1535     if( httpd_ServerIP( cl, ip ) == NULL )
1536         return NULL;
1537
1538     bool ipv6 = ( strchr( ip, ':' ) != NULL );
1539
1540     psz_control = ipv6 ? p_media->psz_rtsp_control_v6
1541                        : p_media->psz_rtsp_control_v4;
1542
1543     /* Dummy destination address for RTSP */
1544     struct sockaddr_storage dst;
1545     socklen_t dstlen = ipv6 ? sizeof( struct sockaddr_in6 )
1546                             : sizeof( struct sockaddr_in );
1547     memset (&dst, 0, dstlen);
1548     dst.ss_family = ipv6 ? AF_INET6 : AF_INET;
1549 #ifdef HAVE_SA_LEN
1550     dst.ss_len = dstlen;
1551 #endif
1552
1553     psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_media->p_vod ), "sout-rtp-",
1554                              NULL, 0, (struct sockaddr *)&dst, dstlen );
1555     if( psz_sdp == NULL )
1556         return NULL;
1557
1558     if( p_media->i_length > 0 )
1559     {
1560         lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
1561         sdp_AddAttribute( &psz_sdp, "range"," npt=0-%lld.%03u", d.quot,
1562                           (unsigned)d.rem );
1563     }
1564
1565     for( int i = 0; i < p_media->i_es; i++ )
1566     {
1567         media_es_t *p_es = p_media->es[i];
1568         const char *mime_major; /* major MIME type */
1569
1570         switch( p_es->fmt.i_cat )
1571         {
1572             case VIDEO_ES:
1573                 mime_major = "video";
1574                 break;
1575             case AUDIO_ES:
1576                 mime_major = "audio";
1577                 break;
1578             case SPU_ES:
1579                 mime_major = "text";
1580                 break;
1581             default:
1582                 continue;
1583         }
1584
1585         sdp_AddMedia( &psz_sdp, mime_major, "RTP/AVP", 0 /* p_es->i_port */,
1586                       p_es->i_payload_type, false, 0,
1587                       p_es->psz_ptname, p_es->i_clock_rate, p_es->i_channels,
1588                       p_es->psz_fmtp );
1589
1590         sdp_AddAttribute( &psz_sdp, "control", psz_control, ip, i );
1591     }
1592
1593     return psz_sdp;
1594 }