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
 496     if( p_media->i_payload_type >= 128 )
 497     {
 498         msg_Err( p_vod, "too many elementary streams");
 499         return VLC_EGENERIC;
 500     }
 501
 502     media_es_t *p_es = calloc( 1, sizeof(media_es_t) );
 503     if( !p_es )
 504         return VLC_ENOMEM;
 505
 506     p_media->psz_mux = NULL;
 507
 508     /* TODO: update SDP, etc... */
 509     if( asprintf( &psz_urlc, "%s/trackID=%d",
 510               p_media->psz_rtsp_path, p_media->i_es ) < 0 )
 511     {
 512         free( p_es );
 513         return VLC_ENOMEM;
 514     }
 515     msg_Dbg( p_vod, "  - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
 516
 517     p_es->i_clock_rate = 90000;
 518     p_es->i_channels = 1;
 519
 520     switch( p_fmt->i_codec )
 521     {
 522         case VLC_CODEC_S16B:
 523             if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
 524             {
 525                 p_es->i_payload_type = 11;
 526             }
 527             else if( p_fmt->audio.i_channels == 2 &&
 528                      p_fmt->audio.i_rate == 44100 )
 529             {
 530                 p_es->i_payload_type = 10;
 531             }
 532             else
 533             {
 534                 p_es->i_payload_type = p_media->i_payload_type++;
 535             }
 536             p_es->psz_ptname = "L16";
 537             p_es->i_clock_rate = p_fmt->audio.i_rate;
 538             p_es->i_channels = p_fmt->audio.i_channels;
 539             break;
 540         case VLC_CODEC_U8:
 541             p_es->i_payload_type = p_media->i_payload_type++;
 542             p_es->psz_ptname = "L8";
 543             p_es->i_clock_rate = p_fmt->audio.i_rate;
 544             p_es->i_channels = p_fmt->audio.i_channels;
 545             break;
 546         case VLC_CODEC_MPGA:
 547             p_es->i_payload_type = 14;
 548             p_es->psz_ptname = "MPA";
 549             break;
 550         case VLC_CODEC_MPGV:
 551             p_es->i_payload_type = 32;
 552             p_es->psz_ptname = "MPV";
 553             break;
 554         case VLC_CODEC_A52:
 555             p_es->i_payload_type = p_media->i_payload_type++;
 556             p_es->psz_ptname = "ac3";
 557             p_es->i_clock_rate = p_fmt->audio.i_rate;
 558             break;
 559         case VLC_CODEC_H263:
 560             p_es->i_payload_type = p_media->i_payload_type++;
 561             p_es->psz_ptname = "H263-1998";
 562             break;
 563         case VLC_CODEC_H264:
 564             p_es->i_payload_type = p_media->i_payload_type++;
 565             p_es->psz_ptname = "H264";
 566             p_es->psz_fmtp = NULL;
 567             /* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
 568             if( p_fmt->i_extra > 0 )
 569             {
 570                 uint8_t *p_buffer = p_fmt->p_extra;
 571                 int     i_buffer = p_fmt->i_extra;
 572                 char    *p_64_sps = NULL;
 573                 char    *p_64_pps = NULL;
 574                 char    hexa[6+1];
 575
 576                 while( i_buffer > 4 &&
 577                        p_buffer[0] == 0 && p_buffer[1] == 0 &&
 578                        p_buffer[2] == 0 && p_buffer[3] == 1 )
 579                 {
 580                     const int i_nal_type = p_buffer[4]&0x1f;
 581                     int i_offset;
 582                     int i_size      = 0;
 583
 584                     i_size = i_buffer;
 585                     for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
 586                     {
 587                         if( p_buffer[i_offset] == 0 && p_buffer[i_offset+1] == 0 && p_buffer[i_offset+2] == 0 && p_buffer[i_offset+3] == 1 )
 588                         {
 589                             /* we found another startcode */
 590                             i_size = i_offset;
 591                             break;
 592                         }
 593                     }
 594                     if( i_nal_type == 7 )
 595                     {
 596                         free( p_64_sps );
 597                         p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 598                         sprintf_hexa( hexa, &p_buffer[5], 3 );
 599                     }
 600                     else if( i_nal_type == 8 )
 601                     {
 602                         free( p_64_pps );
 603                         p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 604                     }
 605                     i_buffer -= i_size;
 606                     p_buffer += i_size;
 607                 }
 608                 /* */
 609                 if( p_64_sps && p_64_pps )
 610                 {
 611                     if( asprintf( &p_es->psz_fmtp,
 612                                   "packetization-mode=1;profile-level-id=%s;"
 613                                   "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
 614                                   p_64_pps ) < 0 )
 615                     {
 616                         free( p_64_sps );
 617                         free( p_64_pps );
 618                         free( psz_urlc );
 619                         free( p_es );
 620                         return VLC_ENOMEM;
 621                     }
 622                 }
 623                 free( p_64_sps );
 624                 free( p_64_pps );
 625             }
 626             if( !p_es->psz_fmtp )
 627                 p_es->psz_fmtp = strdup( "packetization-mode=1" );
 628             break;
 629         case VLC_CODEC_MP4V:
 630             p_es->i_payload_type = p_media->i_payload_type++;
 631             p_es->psz_ptname = "MP4V-ES";
 632             if( p_fmt->i_extra > 0 )
 633             {
 634                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 635                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 636                 if( asprintf( &p_es->psz_fmtp,
 637                               "profile-level-id=3; config=%s;", p_hexa ) == -1 )
 638                     p_es->psz_fmtp = NULL;
 639                 free( p_hexa );
 640             }
 641             break;
 642         case VLC_CODEC_MP4A:
 643             p_es->i_payload_type = p_media->i_payload_type++;
 644             p_es->psz_ptname = "mpeg4-generic";
 645             p_es->i_clock_rate = p_fmt->audio.i_rate;
 646             if( p_fmt->i_extra > 0 )
 647             {
 648                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 649                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 650                 if( asprintf( &p_es->psz_fmtp,
 651                               "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
 652                               "config=%s; SizeLength=13;IndexLength=3; "
 653                               "IndexDeltaLength=3; Profile=1;", p_hexa ) == -1 )
 654                     p_es->psz_fmtp = NULL;
 655                 free( p_hexa );
 656             }
 657             break;
 658         case VLC_FOURCC( 'm', 'p', '2', 't' ):
 659             p_media->psz_mux = "ts";
 660             p_es->i_payload_type = 33;
 661             p_es->psz_ptname = "MP2T";
 662             break;
 663         case VLC_FOURCC( 'm', 'p', '2', 'p' ):
 664             p_media->psz_mux = "ps";
 665             p_es->i_payload_type = p_media->i_payload_type++;
 666             p_es->psz_ptname = "MP2P";
 667             break;
 668         case VLC_CODEC_AMR_NB:
 669             p_es->i_payload_type = p_media->i_payload_type++;
 670             p_es->psz_ptname = "AMR";
 671             p_es->i_clock_rate = 8000;
 672             if(p_fmt->audio.i_channels == 2 )
 673                 p_es->i_channels = 2;
 674             p_es->psz_fmtp = strdup( "octet-align=1" );
 675             break;
 676         case VLC_CODEC_AMR_WB:
 677             p_es->i_payload_type = p_media->i_payload_type++;
 678             p_es->psz_ptname = "AMR-WB";
 679             p_es->i_clock_rate = 16000;
 680             if(p_fmt->audio.i_channels == 2 )
 681                 p_es->i_channels = 2;
 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     return VLC_SUCCESS;
 724 }
 725
 726 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
 727 {
 728     media_es_t *p_es = NULL;
 729     int i;
 730
 731     /* Find the ES */
 732     for( i = 0; i < p_media->i_es; i++ )
 733     {
 734         if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
 735             p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
 736             p_media->es[i]->fmt.i_id == p_fmt->i_id )
 737         {
 738             p_es = p_media->es[i];
 739         }
 740     }
 741     if( !p_es ) return;
 742
 743     msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );
 744
 745     vlc_mutex_lock( &p_media->lock );
 746     TAB_REMOVE( p_media->i_es, p_media->es, p_es );
 747     vlc_mutex_unlock( &p_media->lock );
 748
 749     free( p_es->psz_fmtp );
 750
 751     if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
 752     es_format_Clean( &p_es->fmt );
 753     free( p_es );
 754 }
 755
 756 static void CommandPush( vod_t *p_vod, rtsp_cmd_type_t i_type, vod_media_t *p_media, const char *psz_session,
 757                          double f_arg, const char *psz_arg )
 758 {
 759     rtsp_cmd_t cmd;
 760     block_t *p_cmd;
 761
 762     memset( &cmd, 0, sizeof(cmd) );
 763     cmd.i_type = i_type;
 764     cmd.p_media = p_media;
 765     if( p_media )
 766         cmd.i_media_id = p_media->id;
 767     if( psz_session )
 768         cmd.psz_session = strdup(psz_session);
 769     cmd.f_arg = f_arg;
 770     if( psz_arg )
 771         cmd.psz_arg = strdup(psz_arg);
 772
 773     p_cmd = block_New( p_vod, sizeof(rtsp_cmd_t) );
 774     memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
 775
 776     block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
 777 }
 778
 779 static void* CommandThread( vlc_object_t *p_this )
 780 {
 781     vod_t *p_vod = (vod_t*)p_this;
 782     vod_sys_t *p_sys = p_vod->p_sys;
 783     int canc = vlc_savecancel ();
 784
 785     while( vlc_object_alive (p_vod) )
 786     {
 787         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 788         rtsp_cmd_t cmd;
 789         vod_media_t *p_media = NULL;
 790         int i;
 791
 792         if( !p_block_cmd )
 793             break;
 794
 795         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 796         block_Release( p_block_cmd );
 797
 798         if( cmd.i_type == RTSP_CMD_TYPE_NONE )
 799             break;
 800
 801         if ( cmd.i_type == RTSP_CMD_TYPE_ADD )
 802         {
 803             TAB_APPEND( p_sys->i_media, p_sys->media, cmd.p_media );
 804             goto next;
 805         }
 806
 807         if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 808         {
 809             MediaDel(p_vod, cmd.p_media);
 810             goto next;
 811         }
 812
 813         /* */
 814         for( i = 0; i < p_sys->i_media; i++ )
 815         {
 816             if( p_sys->media[i]->id == cmd.i_media_id )
 817                 break;
 818         }
 819         if( i >= p_sys->i_media )
 820         {
 821             goto next;
 822         }
 823         p_media = p_sys->media[i];
 824
 825         switch( cmd.i_type )
 826         {
 827         case RTSP_CMD_TYPE_PLAY:
 828             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 829                               VOD_MEDIA_PLAY, cmd.psz_arg );
 830             break;
 831         case RTSP_CMD_TYPE_PAUSE:
 832             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 833                               VOD_MEDIA_PAUSE );
 834             break;
 835
 836         case RTSP_CMD_TYPE_STOP:
 837             vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
 838             break;
 839
 840         case RTSP_CMD_TYPE_SEEK:
 841             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 842                               VOD_MEDIA_SEEK, cmd.f_arg );
 843             break;
 844
 845         case RTSP_CMD_TYPE_REWIND:
 846             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 847                               VOD_MEDIA_REWIND, cmd.f_arg );
 848             break;
 849
 850         case RTSP_CMD_TYPE_FORWARD:
 851             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 852                               VOD_MEDIA_FORWARD, cmd.f_arg );
 853             break;
 854
 855         default:
 856             break;
 857         }
 858
 859     next:
 860         free( cmd.psz_session );
 861         free( cmd.psz_arg );
 862     }
 863
 864     vlc_restorecancel (canc);
 865     return NULL;
 866 }
 867
 868 /****************************************************************************
 869  * RTSP server implementation
 870  ****************************************************************************/
 871 static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
 872 {
 873     rtsp_client_t *p_rtsp = calloc( 1, sizeof(rtsp_client_t) );
 874
 875     if( !p_rtsp )
 876         return NULL;
 877     p_rtsp->es = 0;
 878
 879     p_rtsp->psz_session = psz_session;
 880     TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 881
 882     p_media->p_vod->p_sys->i_connections++;
 883     msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
 884              psz_session, p_media->p_vod->p_sys->i_throttle_users );
 885
 886     return p_rtsp;
 887 }
 888
 889 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
 890 {
 891     int i;
 892
 893     for( i = 0; psz_session && i < p_media->i_rtsp; i++ )
 894     {
 895         if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
 896             return p_media->rtsp[i];
 897     }
 898
 899     return NULL;
 900 }
 901
 902 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
 903 {
 904     p_media->p_vod->p_sys->i_connections--;
 905     msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
 906              p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
 907
 908     while( p_rtsp->i_es )
 909     {
 910         p_rtsp->i_es--;
 911         free( p_rtsp->es[p_rtsp->i_es] );
 912     }
 913     free( p_rtsp->es );
 914
 915     TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 916
 917     free( p_rtsp->psz_session );
 918     free( p_rtsp );
 919 }
 920
 921
 922 static float ParseNPT (const char *str)
 923 {
 924      locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
 925      locale_t oldloc = uselocale (loc);
 926      unsigned hour, min;
 927      float sec;
 928
 929      if (sscanf (str, "%u:%u:%f", &hour, &min, &sec) == 3)
 930          sec += ((hour * 60) + min) * 60;
 931      else
 932      if (sscanf (str, "%f", &sec) != 1)
 933          sec = 0.;
 934
 935      if (loc != (locale_t)0)
 936      {
 937          uselocale (oldloc);
 938          freelocale (loc);
 939      }
 940      return sec;
 941 }
 942
 943
 944 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
 945                          httpd_message_t *answer, const httpd_message_t *query )
 946 {
 947     vod_media_t *p_media = (vod_media_t*)p_args;
 948     vod_t *p_vod = p_media->p_vod;
 949     const char *psz_transport = NULL;
 950     const char *psz_playnow = NULL; /* support option: x-playNow */
 951     const char *psz_session = NULL;
 952     const char *psz_cseq = NULL;
 953     rtsp_client_t *p_rtsp;
 954     int i_port = 0;
 955     int i_cseq = 0;
 956
 957     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
 958
 959     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
 960
 961     answer->i_proto   = HTTPD_PROTO_RTSP;
 962     answer->i_version = query->i_version;
 963     answer->i_type    = HTTPD_MSG_ANSWER;
 964     answer->i_body    = 0;
 965     answer->p_body    = NULL;
 966
 967     switch( query->i_type )
 968     {
 969         case HTTPD_MSG_SETUP:
 970         {
 971             psz_playnow = httpd_MsgGet( query, "x-playNow" );
 972             psz_transport = httpd_MsgGet( query, "Transport" );
 973             if( psz_transport == NULL )
 974             {
 975                 answer->i_status = 400;
 976                 break;
 977             }
 978             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
 979
 980             if( strstr( psz_transport, "unicast" ) &&
 981                 strstr( psz_transport, "client_port=" ) )
 982             {
 983                 rtsp_client_t *p_rtsp = NULL;
 984                 char ip[NI_MAXNUMERICHOST];
 985                 i_port = atoi( strstr( psz_transport, "client_port=" ) +
 986                                 strlen("client_port=") );
 987
 988                 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
 989                     strstr( psz_transport, "RAW/RAW/UDP" ) )
 990                 {
 991                     p_media->psz_mux = p_vod->p_sys->psz_raw_mux;
 992                     p_media->b_raw = true;
 993                 }
 994
 995                 if( httpd_ClientIP( cl, ip ) == NULL )
 996                 {
 997                     answer->i_status = 500;
 998                     answer->i_body = 0;
 999                     answer->p_body = NULL;
1000                     break;
1001                 }
1002
1003                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1004                          ip, i_port );
1005
1006                 psz_session = httpd_MsgGet( query, "Session" );
1007                 if( !psz_session || !*psz_session )
1008                 {
1009                     char *psz_new;
1010                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1011                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1012                     {
1013                         answer->i_status = 503;
1014                         answer->i_body = 0;
1015                         answer->p_body = NULL;
1016                         break;
1017                     }
1018 #warning Should use secure randomness here! (spoofing risk)
1019                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1020                         return VLC_ENOMEM;
1021                     psz_session = psz_new;
1022
1023                     p_rtsp = RtspClientNew( p_media, psz_new );
1024                     if( !p_rtsp )
1025                     {
1026                         answer->i_status = 454;
1027                         answer->i_body = 0;
1028                         answer->p_body = NULL;
1029                         break;
1030                     }
1031                 }
1032                 else
1033                 {
1034                     p_rtsp = RtspClientGet( p_media, psz_session );
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
1044                 answer->i_status = 200;
1045                 answer->i_body = 0;
1046                 answer->p_body = NULL;
1047
1048                 if( p_media->b_raw )
1049                 {
1050                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1051                     {
1052                         httpd_MsgAdd( answer, "Transport",
1053                                       "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1054                                       i_port, i_port + 1 );
1055                     }
1056                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1057                     {
1058                         httpd_MsgAdd( answer, "Transport",
1059                                       "RAW/RAW/UDP;unicast;client_port=%d-%d",
1060                                       i_port, i_port + 1 );
1061                     }
1062                 }
1063                 else
1064                     httpd_MsgAdd( answer, "Transport",
1065                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1066                                   i_port, i_port + 1 );
1067             }
1068             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1069             {
1070                 answer->i_status = 461;
1071                 answer->i_body = 0;
1072                 answer->p_body = NULL;
1073             }
1074
1075             /* Intentional fall-through on x-playNow option in RTSP request */
1076             if( !psz_playnow )
1077                 break;
1078         }
1079
1080         case HTTPD_MSG_PLAY:
1081         {
1082             char *psz_output, ip[NI_MAXNUMERICHOST];
1083             int i, i_port_audio = 0, i_port_video = 0;
1084
1085             /* for now only multicast so easy */
1086             if( !psz_playnow )
1087             {
1088                 answer->i_status = 200;
1089                 answer->i_body = 0;
1090                 answer->p_body = NULL;
1091             }
1092
1093             if( !psz_session )
1094                 psz_session = httpd_MsgGet( query, "Session" );
1095             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1096
1097             p_rtsp = RtspClientGet( p_media, psz_session );
1098             if( !p_rtsp )
1099             {
1100                 answer->i_status = 500;
1101                 answer->i_body = 0;
1102                 answer->p_body = NULL;
1103                 break;
1104             }
1105
1106             if( p_rtsp->b_playing )
1107             {
1108                 const char *psz_position = httpd_MsgGet( query, "Range" );
1109                 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1110                 if( psz_position )
1111                     psz_position = strstr( psz_position, "npt=" );
1112                 if( psz_position && !psz_scale )
1113                 {
1114                     double f_pos = ParseNPT (psz_position + 4);
1115                     msg_Dbg( p_vod, "seeking request: %s", psz_position );
1116                     f_pos /= ((double)(p_media->i_length)) / CLOCK_FREQ / 100;
1117                     CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1118                                  psz_session, f_pos, NULL );
1119                 }
1120                 else if( psz_scale )
1121                 {
1122                     double f_scale = 0.0;
1123                     char *end;
1124
1125                     f_scale = us_strtod( psz_scale, &end );
1126                     if( end > psz_scale )
1127                     {
1128                         f_scale = (f_scale * 30.0);
1129                         if( psz_scale[0] == '-' ) /* rewind */
1130                         {
1131                             msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1132                             CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
1133                                          psz_session, f_scale, NULL );
1134                         }
1135                         else if(psz_scale[0] != '1' ) /* fast-forward */
1136                         {
1137                             msg_Dbg( p_vod, "fastforward request: %s",
1138                                      psz_scale );
1139                             CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
1140                                          psz_session, f_scale, NULL );
1141                         }
1142
1143                         if( p_rtsp->b_paused )
1144                         {
1145                             p_rtsp->b_paused = false;
1146                             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1147                                          psz_session, 0, NULL );
1148                         }
1149                     }
1150                     break;
1151                 }
1152             }
1153
1154             if( p_rtsp->b_playing && p_rtsp->b_paused )
1155             {
1156                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1157                              psz_session, 0, NULL );
1158                 p_rtsp->b_paused = false;
1159                 break;
1160             }
1161             else if( p_rtsp->b_playing ) break;
1162
1163             if( httpd_ClientIP( cl, ip ) == NULL ) break;
1164
1165             p_rtsp->b_playing = true;
1166
1167             /* FIXME for != 1 video and 1 audio */
1168             for( i = 0; i < p_rtsp->i_es; i++ )
1169             {
1170                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1171                     i_port_audio = p_rtsp->es[i]->i_port;
1172                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1173                     i_port_video = p_rtsp->es[i]->i_port;
1174             }
1175
1176             if( p_media->psz_mux )
1177             {
1178                 if( p_media->b_raw )
1179                 {
1180                     if( asprintf( &psz_output,
1181                               "std{access=udp,dst=%s:%i,mux=%s}",
1182                               ip, i_port, p_media->psz_mux ) < 0 )
1183                         return VLC_ENOMEM;
1184                 }
1185                 else
1186                 {
1187                     if( asprintf( &psz_output,
1188                               "rtp{dst=%s,port=%i,mux=%s}",
1189                               ip, i_port_video, p_media->psz_mux ) < 0 )
1190                         return VLC_ENOMEM;
1191                 }
1192             }
1193             else
1194             {
1195                 if( asprintf( &psz_output,
1196                               "rtp{dst=%s,port-video=%i,port-audio=%i}",
1197                               ip, i_port_video, i_port_audio ) < 0 )
1198                     return VLC_ENOMEM;
1199             }
1200
1201             CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1202                          0, psz_output );
1203             free( psz_output );
1204             break;
1205         }
1206
1207         case HTTPD_MSG_DESCRIBE:
1208         {
1209             char *psz_sdp =
1210                 SDPGenerate( p_media, cl );
1211
1212             if( psz_sdp != NULL )
1213             {
1214                 answer->i_status = 200;
1215                 httpd_MsgAdd( answer, "Content-type",  "%s",
1216                               "application/sdp" );
1217
1218                 answer->p_body = (uint8_t *)psz_sdp;
1219                 answer->i_body = strlen( psz_sdp );
1220             }
1221             else
1222             {
1223                 answer->i_status = 500;
1224                 answer->p_body = NULL;
1225                 answer->i_body = 0;
1226             }
1227             break;
1228         }
1229
1230         case HTTPD_MSG_PAUSE:
1231             psz_session = httpd_MsgGet( query, "Session" );
1232             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1233
1234             p_rtsp = RtspClientGet( p_media, psz_session );
1235             if( !p_rtsp ) break;
1236
1237             if( !p_rtsp->b_paused )
1238             {
1239                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1240                              0, NULL );
1241                 p_rtsp->b_paused = true;
1242             }
1243
1244             answer->i_status = 200;
1245             answer->i_body = 0;
1246             answer->p_body = NULL;
1247             break;
1248
1249         case HTTPD_MSG_TEARDOWN:
1250             /* for now only multicast so easy again */
1251             answer->i_status = 200;
1252             answer->i_body = 0;
1253             answer->p_body = NULL;
1254
1255             psz_session = httpd_MsgGet( query, "Session" );
1256             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1257
1258             p_rtsp = RtspClientGet( p_media, psz_session );
1259             if( !p_rtsp ) break;
1260
1261             CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1262                          0, NULL );
1263             RtspClientDel( p_media, p_rtsp );
1264             break;
1265
1266         case HTTPD_MSG_GETPARAMETER:
1267             answer->i_status = 200;
1268             answer->i_body = 0;
1269             answer->p_body = NULL;
1270             break;
1271
1272         default:
1273             return VLC_EGENERIC;
1274     }
1275
1276     httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1277     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1278     psz_cseq = httpd_MsgGet( query, "Cseq" );
1279     psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1280     httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1281     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1282
1283     if( psz_session )
1284     {
1285          if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
1286              httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1287                p_media->p_vod->p_sys->i_session_timeout );
1288          else
1289               httpd_MsgAdd( answer, "Session", "%s", psz_session );
1290     }
1291
1292     return VLC_SUCCESS;
1293 }
1294
1295 static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1296                            httpd_message_t *answer,
1297                            const httpd_message_t *query )
1298 {
1299     media_es_t *p_es = (media_es_t*)p_args;
1300     vod_media_t *p_media = p_es->p_media;
1301     vod_t *p_vod = p_media->p_vod;
1302     rtsp_client_t *p_rtsp = NULL;
1303     const char *psz_transport = NULL;
1304     const char *psz_playnow = NULL; /* support option: x-playNow */
1305     const char *psz_session = NULL;
1306     const char *psz_position = NULL;
1307     const char *psz_cseq = NULL;
1308     int i_cseq = 0;
1309     int i;
1310
1311     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1312
1313     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1314
1315     answer->i_proto   = HTTPD_PROTO_RTSP;
1316     answer->i_version = query->i_version;
1317     answer->i_type    = HTTPD_MSG_ANSWER;
1318     answer->i_body    = 0;
1319     answer->p_body      = NULL;
1320
1321     switch( query->i_type )
1322     {
1323         case HTTPD_MSG_SETUP:
1324             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1325             psz_transport = httpd_MsgGet( query, "Transport" );
1326
1327             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1328
1329             if( strstr( psz_transport, "unicast" ) &&
1330                 strstr( psz_transport, "client_port=" ) )
1331             {
1332                 rtsp_client_t *p_rtsp = NULL;
1333                 rtsp_client_es_t *p_rtsp_es = NULL;
1334                 char ip[NI_MAXNUMERICHOST];
1335                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
1336                                    strlen("client_port=") );
1337
1338                 if( httpd_ClientIP( cl, ip ) == NULL )
1339                 {
1340                     answer->i_status = 500;
1341                     answer->i_body = 0;
1342                     answer->p_body = NULL;
1343                     break;
1344                 }
1345
1346                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1347                         ip, i_port );
1348
1349                 psz_session = httpd_MsgGet( query, "Session" );
1350                 if( !psz_session || !*psz_session )
1351                 {
1352                     char *psz_new;
1353                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1354                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1355                     {
1356                         answer->i_status = 503;
1357                         answer->i_body = 0;
1358                         answer->p_body = NULL;
1359                         break;
1360                     }
1361 #warning Session ID should be securely random (spoofing risk)
1362                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1363                         return VLC_ENOMEM;
1364                     psz_session = psz_new;
1365
1366                     p_rtsp = RtspClientNew( p_media, psz_new );
1367                     if( !p_rtsp )
1368                     {
1369                         answer->i_status = 454;
1370                         answer->i_body = 0;
1371                         answer->p_body = NULL;
1372                         break;
1373                     }
1374                 }
1375                 else
1376                 {
1377                     p_rtsp = RtspClientGet( p_media, psz_session );
1378                     if( !p_rtsp )
1379                     {
1380                         answer->i_status = 454;
1381                         answer->i_body = 0;
1382                         answer->p_body = NULL;
1383                         break;
1384                     }
1385                 }
1386
1387                 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1388                 if( !p_rtsp_es )
1389                 {
1390                     answer->i_status = 500;
1391                     answer->i_body = 0;
1392                     answer->p_body = NULL;
1393                     break;
1394                 }
1395                 p_rtsp_es->i_port = i_port;
1396                 p_rtsp_es->p_media_es = p_es;
1397                 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1398
1399                 answer->i_status = 200;
1400                 answer->i_body = 0;
1401                 answer->p_body = NULL;
1402
1403                 if( p_media->b_raw )
1404                 {
1405                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1406                     {
1407                         httpd_MsgAdd( answer, "Transport",
1408                                      "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1409                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1410                     }
1411                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1412                     {
1413                         httpd_MsgAdd( answer, "Transport",
1414                                      "RAW/RAW/UDP;unicast;client_port=%d-%d",
1415                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1416                     }
1417                 }
1418                 else
1419                 {
1420                     httpd_MsgAdd( answer, "Transport",
1421                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1422                                   p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1423                 }
1424             }
1425             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1426             {
1427                 answer->i_status = 461;
1428                 answer->i_body = 0;
1429                 answer->p_body = NULL;
1430             }
1431
1432             /* Intentional fall-through on x-playNow option in RTSP request */
1433             if( !psz_playnow )
1434                 break;
1435
1436         case HTTPD_MSG_PLAY:
1437             /* This is kind of a kludge. Should we only support Aggregate
1438              * Operations ? */
1439             psz_session = httpd_MsgGet( query, "Session" );
1440             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1441
1442             p_rtsp = RtspClientGet( p_media, psz_session );
1443
1444             psz_position = httpd_MsgGet( query, "Range" );
1445             if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1446             if( psz_position )
1447             {
1448                 double f_pos = ParseNPT (psz_position + 4);
1449                 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1450                 f_pos /= ((double)(p_media->i_length)) / CLOCK_FREQ / 100;
1451                 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1452                              psz_session, f_pos, NULL );
1453             }
1454
1455             if( !psz_playnow )
1456             {
1457                 answer->i_status = 200;
1458                 answer->i_body = 0;
1459                 answer->p_body = NULL;
1460             }
1461             break;
1462
1463         case HTTPD_MSG_TEARDOWN:
1464             answer->i_status = 200;
1465             answer->i_body = 0;
1466             answer->p_body = NULL;
1467
1468             psz_session = httpd_MsgGet( query, "Session" );
1469             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1470
1471             p_rtsp = RtspClientGet( p_media, psz_session );
1472             if( !p_rtsp ) break;
1473
1474             for( i = 0; i < p_rtsp->i_es; i++ )
1475             {
1476                 if( p_rtsp->es[i]->p_media_es == p_es )
1477                 {
1478                     TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, p_rtsp->es[i] );
1479                     break;
1480                 }
1481             }
1482
1483             if( !p_rtsp->i_es )
1484             {
1485                 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1486                              0, NULL );
1487                 RtspClientDel( p_media, p_rtsp );
1488             }
1489             break;
1490
1491         case HTTPD_MSG_PAUSE:
1492             /* This is kind of a kludge. Should we only support Aggregate
1493              * Operations ? */
1494             psz_session = httpd_MsgGet( query, "Session" );
1495             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1496
1497             p_rtsp = RtspClientGet( p_media, psz_session );
1498             if( !p_rtsp ) break;
1499
1500             if( !p_rtsp->b_paused )
1501             {
1502                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1503                              0, NULL );
1504                 p_rtsp->b_paused = true;
1505             }
1506
1507             answer->i_status = 200;
1508             answer->i_body = 0;
1509             answer->p_body = NULL;
1510             break;
1511
1512         default:
1513             return VLC_EGENERIC;
1514             break;
1515     }
1516
1517     httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1518     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1519     psz_cseq = httpd_MsgGet( query, "Cseq" );
1520     if (psz_cseq)
1521         i_cseq = atoi( psz_cseq );
1522     else
1523         i_cseq = 0;
1524     httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1525     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1526
1527     if( psz_session )
1528         httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1529
1530     return VLC_SUCCESS;
1531 }
1532
1533 /*****************************************************************************
1534  * SDPGenerate: TODO
1535  * FIXME: need to be moved to a common place ?
1536  *****************************************************************************/
1537 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1538 {
1539     char *psz_sdp, ip[NI_MAXNUMERICHOST];
1540     const char *psz_control;
1541
1542     if( httpd_ServerIP( cl, ip ) == NULL )
1543         return NULL;
1544
1545     bool ipv6 = ( strchr( ip, ':' ) != NULL );
1546
1547     psz_control = ipv6 ? p_media->psz_rtsp_control_v6
1548                        : p_media->psz_rtsp_control_v4;
1549
1550     /* Dummy destination address for RTSP */
1551     struct sockaddr_storage dst;
1552     socklen_t dstlen = ipv6 ? sizeof( struct sockaddr_in6 )
1553                             : sizeof( struct sockaddr_in );
1554     memset (&dst, 0, dstlen);
1555     dst.ss_family = ipv6 ? AF_INET6 : AF_INET;
1556 #ifdef HAVE_SA_LEN
1557     dst.ss_len = dstlen;
1558 #endif
1559
1560     psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_media->p_vod ), "sout-rtp-",
1561                              NULL, 0, (struct sockaddr *)&dst, dstlen );
1562     if( psz_sdp == NULL )
1563         return NULL;
1564
1565     if( p_media->i_length > 0 )
1566     {
1567         lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
1568         sdp_AddAttribute( &psz_sdp, "range"," npt=0-%lld.%03u", d.quot,
1569                           (unsigned)d.rem );
1570     }
1571
1572     for( int i = 0; i < p_media->i_es; i++ )
1573     {
1574         media_es_t *p_es = p_media->es[i];
1575         const char *mime_major; /* major MIME type */
1576
1577         switch( p_es->fmt.i_cat )
1578         {
1579             case VIDEO_ES:
1580                 mime_major = "video";
1581                 break;
1582             case AUDIO_ES:
1583                 mime_major = "audio";
1584                 break;
1585             case SPU_ES:
1586                 mime_major = "text";
1587                 break;
1588             default:
1589                 continue;
1590         }
1591
1592         sdp_AddMedia( &psz_sdp, mime_major, "RTP/AVP", 0 /* p_es->i_port */,
1593                       p_es->i_payload_type, false, 0,
1594                       p_es->psz_ptname, p_es->i_clock_rate, p_es->i_channels,
1595                       p_es->psz_fmtp );
1596
1597         sdp_AddAttribute( &psz_sdp, "control", psz_control, ip, i );
1598     }
1599
1600     return psz_sdp;
1601 }