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 THROTTLE_TEXT N_( "Maximum number of connections" )
  62 #define THROTTLE_LONGTEXT N_( "This limits the maximum number of clients " \
  63     "that can connect to the RTSP VOD. 0 means no limit."  )
  64
  65 #define RAWMUX_TEXT N_( "MUX for RAW RTSP transport" )
  66
  67 #define SESSION_TIMEOUT_TEXT N_( "Sets the timeout option in the RTSP " \
  68     "session string" )
  69 #define SESSION_TIMEOUT_LONGTEXT N_( "Defines what timeout option to add " \
  70     "to the RTSP session ID string. Setting it to a negative number removes " \
  71     "the timeout option entirely. This is needed by some IPTV STBs (such as " \
  72     "those made by HansunTech) which get confused by it. The default is 5." )
  73
  74 vlc_module_begin ()
  75     set_shortname( N_("RTSP VoD" ) )
  76     set_description( N_("Legacy RTSP VoD server") )
  77     set_category( CAT_SOUT )
  78     set_subcategory( SUBCAT_SOUT_VOD )
  79     set_capability( "vod server", 1 )
  80     set_callbacks( Open, Close )
  81     add_shortcut( "rtsp" )
  82     add_string( "rtsp-raw-mux", "ts", RAWMUX_TEXT,
  83                 RAWMUX_TEXT, true )
  84     add_integer( "rtsp-throttle-users", 0, THROTTLE_TEXT,
  85                  THROTTLE_LONGTEXT, true )
  86     add_integer( "rtsp-session-timeout", 5, SESSION_TIMEOUT_TEXT,
  87                  SESSION_TIMEOUT_LONGTEXT, true )
  88 vlc_module_end ()
  89
  90 /*****************************************************************************
  91  * Exported prototypes
  92  *****************************************************************************/
  93
  94 typedef struct media_es_t media_es_t;
  95
  96 typedef struct
  97 {
  98     media_es_t *p_media_es;
  99     int i_port;
 100
 101 } rtsp_client_es_t;
 102
 103 typedef struct
 104 {
 105     char *psz_session;
 106
 107     bool b_playing; /* is it in "play" state */
 108     int i_port_raw;
 109
 110     int i_es;
 111     rtsp_client_es_t **es;
 112
 113 } rtsp_client_t;
 114
 115 struct media_es_t
 116 {
 117     /* VoD server */
 118     vod_t *p_vod;
 119
 120     /* RTSP server */
 121     httpd_url_t *p_rtsp_url;
 122
 123     vod_media_t *p_media;
 124
 125     es_format_t fmt;
 126     uint8_t     i_payload_type;
 127     const char  *psz_ptname;
 128     unsigned    i_clock_rate;
 129     unsigned    i_channels;
 130     char        *psz_fmtp;
 131
 132 };
 133
 134 struct vod_media_t
 135 {
 136     int id;
 137
 138     /* VoD server */
 139     vod_t *p_vod;
 140
 141     /* RTSP server */
 142     httpd_url_t  *p_rtsp_url;
 143     char         *psz_rtsp_control_v4;
 144     char         *psz_rtsp_control_v6;
 145     char         *psz_rtsp_path;
 146
 147     vlc_mutex_t lock;
 148
 149     /* ES list */
 150     int        i_es;
 151     media_es_t **es;
 152     const char *psz_mux;
 153     bool  b_raw;
 154
 155     /* RTSP client */
 156     int           i_rtsp;
 157     rtsp_client_t **rtsp;
 158
 159     /* Infos */
 160     mtime_t i_length;
 161 };
 162
 163 struct vod_sys_t
 164 {
 165     /* RTSP server */
 166     httpd_host_t *p_rtsp_host;
 167     char *psz_path;
 168     int i_throttle_users;
 169     int i_connections;
 170
 171     char *psz_raw_mux;
 172
 173     int i_session_timeout;
 174
 175     /* List of media */
 176     int i_media_id;
 177     int i_media;
 178     vod_media_t **media;
 179
 180     /* */
 181     vlc_thread_t thread;
 182     block_fifo_t *p_fifo_cmd;
 183 };
 184
 185 /* rtsp delayed command (to avoid deadlock between vlm/httpd) */
 186 typedef enum
 187 {
 188     RTSP_CMD_TYPE_NONE,  /* Exit requested */
 189
 190     RTSP_CMD_TYPE_PLAY,
 191     RTSP_CMD_TYPE_PAUSE,
 192     RTSP_CMD_TYPE_STOP,
 193     RTSP_CMD_TYPE_SEEK,
 194     RTSP_CMD_TYPE_REWIND,
 195     RTSP_CMD_TYPE_FORWARD,
 196
 197     RTSP_CMD_TYPE_ADD,
 198     RTSP_CMD_TYPE_DEL,
 199 } rtsp_cmd_type_t;
 200
 201 /* */
 202 typedef struct
 203 {
 204     int i_type;
 205     int i_media_id;
 206     vod_media_t *p_media;
 207     char *psz_session;
 208     char *psz_arg;
 209     int64_t i_arg;
 210     double f_arg;
 211 } rtsp_cmd_t;
 212
 213 static vod_media_t *MediaNew( vod_t *, const char *, input_item_t * );
 214 static void         MediaDel( vod_t *, vod_media_t * );
 215 static void         MediaAskDel ( vod_t *, vod_media_t * );
 216 static int          MediaAddES( vod_t *, vod_media_t *, es_format_t * );
 217 static void         MediaDelES( vod_t *, vod_media_t *, es_format_t * );
 218
 219 static void* CommandThread( void * );
 220 static void  CommandPush( vod_t *, rtsp_cmd_type_t, vod_media_t *,
 221                           const char *psz_session, int64_t i_arg,
 222                           double f_arg, const char *psz_arg );
 223
 224 static rtsp_client_t *RtspClientNew( vod_media_t *, char * );
 225 static rtsp_client_t *RtspClientGet( vod_media_t *, const char * );
 226 static void           RtspClientDel( vod_media_t *, rtsp_client_t * );
 227
 228 static int RtspCallback( httpd_callback_sys_t *, httpd_client_t *,
 229                          httpd_message_t *, const httpd_message_t * );
 230 static int RtspCallbackES( httpd_callback_sys_t *, httpd_client_t *,
 231                            httpd_message_t *, const httpd_message_t * );
 232
 233 static char *SDPGenerate( const vod_media_t *, httpd_client_t *cl );
 234
 235 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
 236 {
 237     static const char hex[16] = "0123456789abcdef";
 238
 239     for( int i = 0; i < i_data; i++ )
 240     {
 241         s[2*i+0] = hex[(p_data[i]>>4)&0xf];
 242         s[2*i+1] = hex[(p_data[i]   )&0xf];
 243     }
 244     s[2*i_data] = '\0';
 245 }
 246
 247 /*****************************************************************************
 248  * Open: Starts the RTSP server module
 249  *****************************************************************************/
 250 static int Open( vlc_object_t *p_this )
 251 {
 252     vod_t *p_vod = (vod_t *)p_this;
 253     vod_sys_t *p_sys = NULL;
 254     char *psz_url = NULL;
 255     vlc_url_t url;
 256
 257     psz_url = var_InheritString( p_vod, "rtsp-host" );
 258     vlc_UrlParse( &url, psz_url, 0 );
 259     free( psz_url );
 260
 261     p_vod->p_sys = p_sys = malloc( sizeof( vod_sys_t ) );
 262     if( !p_sys ) goto error;
 263     p_sys->p_rtsp_host = 0;
 264
 265     p_sys->i_session_timeout = var_CreateGetInteger( p_this, "rtsp-session-timeout" );
 266
 267     p_sys->i_throttle_users = var_CreateGetInteger( p_this, "rtsp-throttle-users" );
 268     msg_Dbg( p_this, "allowing up to %d connections", p_sys->i_throttle_users );
 269     p_sys->i_connections = 0;
 270
 271     p_sys->psz_raw_mux = var_CreateGetString( p_this, "rtsp-raw-mux" );
 272
 273     p_sys->p_rtsp_host = vlc_rtsp_HostNew( VLC_OBJECT(p_vod) );
 274     if( !p_sys->p_rtsp_host )
 275     {
 276         msg_Err( p_vod, "cannot create RTSP server" );
 277         goto error;
 278     }
 279
 280     p_sys->psz_path = strdup( url.psz_path ? url.psz_path : "/" );
 281
 282     TAB_INIT( p_sys->i_media, p_sys->media );
 283     p_sys->i_media_id = 0;
 284
 285     p_vod->pf_media_new = MediaNew;
 286     p_vod->pf_media_del = MediaAskDel;
 287
 288     p_sys->p_fifo_cmd = block_FifoNew();
 289     if( vlc_clone( &p_sys->thread, CommandThread, p_vod, VLC_THREAD_PRIORITY_LOW ) )
 290     {
 291         msg_Err( p_vod, "cannot spawn rtsp vod thread" );
 292         block_FifoRelease( p_sys->p_fifo_cmd );
 293         free( p_sys->psz_path );
 294         goto error;
 295     }
 296
 297     vlc_UrlClean( &url );
 298     return VLC_SUCCESS;
 299
 300 error:
 301     if( p_sys )
 302     {
 303         if( p_sys->p_rtsp_host ) httpd_HostDelete( p_sys->p_rtsp_host );
 304         free( p_sys->psz_raw_mux );
 305         free( p_sys );
 306     }
 307     vlc_UrlClean( &url );
 308
 309     return VLC_EGENERIC;
 310 }
 311
 312 /*****************************************************************************
 313  * Close:
 314  *****************************************************************************/
 315 static void Close( vlc_object_t * p_this )
 316 {
 317     vod_t *p_vod = (vod_t *)p_this;
 318     vod_sys_t *p_sys = p_vod->p_sys;
 319
 320     /* Stop command thread */
 321     CommandPush( p_vod, RTSP_CMD_TYPE_NONE, NULL, NULL, 0, 0.0, NULL );
 322     vlc_join( p_sys->thread, NULL );
 323
 324     while( block_FifoCount( p_sys->p_fifo_cmd ) > 0 )
 325     {
 326         rtsp_cmd_t cmd;
 327         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 328         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 329         block_Release( p_block_cmd );
 330         if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 331             MediaDel(p_vod, cmd.p_media);
 332         free( cmd.psz_session );
 333         free( cmd.psz_arg );
 334     }
 335     block_FifoRelease( p_sys->p_fifo_cmd );
 336
 337     httpd_HostDelete( p_sys->p_rtsp_host );
 338     var_Destroy( p_this, "rtsp-session-timeout" );
 339     var_Destroy( p_this, "rtsp-throttle-users" );
 340     var_Destroy( p_this, "rtsp-raw-mux" );
 341
 342     /* Check VLM is not buggy */
 343     if( p_sys->i_media > 0 )
 344         msg_Err( p_vod, "rtsp vod leaking %d medias", p_sys->i_media );
 345     TAB_CLEAN( p_sys->i_media, p_sys->media );
 346
 347     free( p_sys->psz_path );
 348     free( p_sys->psz_raw_mux );
 349     free( p_sys );
 350 }
 351
 352 /*****************************************************************************
 353  * Media handling
 354  *****************************************************************************/
 355 static vod_media_t *MediaNew( vod_t *p_vod, const char *psz_name,
 356                               input_item_t *p_item )
 357 {
 358     vod_sys_t *p_sys = p_vod->p_sys;
 359
 360     vod_media_t *p_media = calloc( 1, sizeof(vod_media_t) );
 361     if( !p_media )
 362         return NULL;
 363
 364     p_media->id = p_sys->i_media_id++;
 365     TAB_INIT( p_media->i_es, p_media->es );
 366     p_media->psz_mux = NULL;
 367     TAB_INIT( p_media->i_rtsp, p_media->rtsp );
 368     p_media->b_raw = false;
 369
 370     if( asprintf( &p_media->psz_rtsp_path, "%s%s",
 371                   p_sys->psz_path, psz_name ) <0 )
 372         return NULL;
 373     p_media->p_rtsp_url =
 374         httpd_UrlNew( p_sys->p_rtsp_host, p_media->psz_rtsp_path, NULL, NULL );
 375
 376     if( !p_media->p_rtsp_url )
 377     {
 378         msg_Err( p_vod, "cannot create RTSP url (%s)", p_media->psz_rtsp_path);
 379         free( p_media->psz_rtsp_path );
 380         free( p_media );
 381         return NULL;
 382     }
 383
 384     msg_Dbg( p_vod, "created RTSP url: %s", p_media->psz_rtsp_path );
 385
 386     if( asprintf( &p_media->psz_rtsp_control_v4,
 387                   "rtsp://%%s:%%d%s/trackID=%%d",
 388                   p_media->psz_rtsp_path ) < 0 )
 389     {
 390         httpd_UrlDelete( p_media->p_rtsp_url );
 391         free( p_media->psz_rtsp_path );
 392         free( p_media );
 393         return NULL;
 394     }
 395     if( asprintf( &p_media->psz_rtsp_control_v6,
 396                   "rtsp://[%%s]:%%d%s/trackID=%%d",
 397                   p_media->psz_rtsp_path ) < 0 )
 398     {
 399         httpd_UrlDelete( p_media->p_rtsp_url );
 400         free( p_media->psz_rtsp_path );
 401         free( p_media );
 402         return NULL;
 403     }
 404
 405     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_SETUP,
 406                     RtspCallback, (void*)p_media );
 407     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_DESCRIBE,
 408                     RtspCallback, (void*)p_media );
 409     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PLAY,
 410                     RtspCallback, (void*)p_media );
 411     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PAUSE,
 412                     RtspCallback, (void*)p_media );
 413     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_GETPARAMETER,
 414                     RtspCallback, (void*)p_media );
 415     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 416                     RtspCallback, (void*)p_media );
 417
 418     p_media->p_vod = p_vod;
 419
 420     vlc_mutex_init( &p_media->lock );
 421
 422     p_media->i_length = input_item_GetDuration( p_item );
 423
 424     vlc_mutex_lock( &p_item->lock );
 425     msg_Dbg( p_vod, "media has %i declared ES", p_item->i_es );
 426     for( int i = 0; i < p_item->i_es; i++ )
 427     {
 428         MediaAddES( p_vod, p_media, p_item->es[i] );
 429     }
 430     vlc_mutex_unlock( &p_item->lock );
 431
 432     CommandPush( p_vod, RTSP_CMD_TYPE_ADD, p_media, NULL, 0, 0.0, NULL );
 433     return p_media;
 434 }
 435
 436 static void MediaAskDel ( vod_t *p_vod, vod_media_t *p_media )
 437 {
 438     CommandPush( p_vod, RTSP_CMD_TYPE_DEL, p_media, NULL, 0, 0.0, NULL );
 439 }
 440
 441 static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
 442 {
 443     vod_sys_t *p_sys = p_vod->p_sys;
 444
 445     msg_Dbg( p_vod, "deleting media: %s", p_media->psz_rtsp_path );
 446
 447     TAB_REMOVE( p_sys->i_media, p_sys->media, p_media );
 448
 449     httpd_UrlDelete( p_media->p_rtsp_url );
 450
 451     while( p_media->i_rtsp > 0 )
 452         RtspClientDel( p_media, p_media->rtsp[0] );
 453     TAB_CLEAN( p_media->i_rtsp, p_media->rtsp );
 454
 455     free( p_media->psz_rtsp_path );
 456     free( p_media->psz_rtsp_control_v6 );
 457     free( p_media->psz_rtsp_control_v4 );
 458
 459     while( p_media->i_es )
 460         MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );
 461     TAB_CLEAN( p_media->i_es, p_media->es );
 462
 463     vlc_mutex_destroy( &p_media->lock );
 464
 465     free( p_media );
 466 }
 467
 468 static int MediaAddES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt )
 469 {
 470     char *psz_urlc;
 471
 472     media_es_t *p_es = calloc( 1, sizeof(media_es_t) );
 473     if( !p_es )
 474         return VLC_ENOMEM;
 475
 476     p_media->psz_mux = NULL;
 477
 478     /* TODO: update SDP, etc... */
 479     if( asprintf( &psz_urlc, "%s/trackID=%d",
 480               p_media->psz_rtsp_path, p_media->i_es ) < 0 )
 481     {
 482         free( p_es );
 483         return VLC_ENOMEM;
 484     }
 485     msg_Dbg( p_vod, "  - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
 486
 487     /* Dynamic payload. No conflict since we put each ES in its own
 488      * RTP session */
 489     p_es->i_payload_type = 96;
 490     p_es->i_clock_rate = 90000;
 491     p_es->i_channels = 1;
 492
 493     switch( p_fmt->i_codec )
 494     {
 495         case VLC_CODEC_S16B:
 496             if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
 497             {
 498                 p_es->i_payload_type = 11;
 499             }
 500             else if( p_fmt->audio.i_channels == 2 &&
 501                      p_fmt->audio.i_rate == 44100 )
 502             {
 503                 p_es->i_payload_type = 10;
 504             }
 505             p_es->psz_ptname = "L16";
 506             p_es->i_clock_rate = p_fmt->audio.i_rate;
 507             p_es->i_channels = p_fmt->audio.i_channels;
 508             break;
 509         case VLC_CODEC_U8:
 510             p_es->psz_ptname = "L8";
 511             p_es->i_clock_rate = p_fmt->audio.i_rate;
 512             p_es->i_channels = p_fmt->audio.i_channels;
 513             break;
 514         case VLC_CODEC_MPGA:
 515             p_es->i_payload_type = 14;
 516             p_es->psz_ptname = "MPA";
 517             break;
 518         case VLC_CODEC_MPGV:
 519             p_es->i_payload_type = 32;
 520             p_es->psz_ptname = "MPV";
 521             break;
 522         case VLC_CODEC_A52:
 523             p_es->psz_ptname = "ac3";
 524             p_es->i_clock_rate = p_fmt->audio.i_rate;
 525             break;
 526         case VLC_CODEC_H263:
 527             p_es->psz_ptname = "H263-1998";
 528             break;
 529         case VLC_CODEC_H264:
 530             p_es->psz_ptname = "H264";
 531             p_es->psz_fmtp = NULL;
 532             /* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
 533             if( p_fmt->i_extra > 0 )
 534             {
 535                 uint8_t *p_buffer = p_fmt->p_extra;
 536                 int     i_buffer = p_fmt->i_extra;
 537                 char    *p_64_sps = NULL;
 538                 char    *p_64_pps = NULL;
 539                 char    hexa[6+1];
 540
 541                 while( i_buffer > 4 )
 542                 {
 543                     int i_offset    = 0;
 544                     int i_size      = 0;
 545
 546                     while( p_buffer[0] != 0 || p_buffer[1] != 0 ||
 547                            p_buffer[2] != 1 )
 548                     {
 549                         p_buffer++;
 550                         i_buffer--;
 551                         if( i_buffer == 0 ) break;
 552                     }
 553
 554                     if( i_buffer < 4 || memcmp(p_buffer, "\x00\x00\x01", 3 ) )
 555                     {
 556                         /* No startcode found.. */
 557                         break;
 558                     }
 559                     p_buffer += 3;
 560                     i_buffer -= 3;
 561
 562                     const int i_nal_type = p_buffer[0]&0x1f;
 563
 564                     i_size = i_buffer;
 565                     for( i_offset = 0; i_offset+2 < i_buffer ; i_offset++)
 566                     {
 567                         if( !memcmp(p_buffer + i_offset, "\x00\x00\x01", 3 ) )
 568                         {
 569                             /* we found another startcode */
 570                             while( i_offset > 0 && 0 == p_buffer[ i_offset - 1 ] )
 571                                 i_offset--;
 572                             i_size = i_offset;
 573                             break;
 574                         }
 575                     }
 576
 577                     if( i_size == 0 )
 578                     {
 579                         /* No-info found in nal */
 580                         continue;
 581                     }
 582
 583                     if( i_nal_type == 7 )
 584                     {
 585                         free( p_64_sps );
 586                         p_64_sps = vlc_b64_encode_binary( p_buffer, i_size );
 587                         /* XXX: nothing ensures that i_size >= 4 ?? */
 588                         sprintf_hexa( hexa, &p_buffer[1], 3 );
 589                     }
 590                     else if( i_nal_type == 8 )
 591                     {
 592                         free( p_64_pps );
 593                         p_64_pps = vlc_b64_encode_binary( p_buffer, i_size );
 594                     }
 595                     i_buffer -= i_size;
 596                     p_buffer += i_size;
 597                 }
 598                 /* */
 599                 if( p_64_sps && p_64_pps )
 600                 {
 601                     if( asprintf( &p_es->psz_fmtp,
 602                                   "packetization-mode=1;profile-level-id=%s;"
 603                                   "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
 604                                   p_64_pps ) < 0 )
 605                     {
 606                         free( p_64_sps );
 607                         free( p_64_pps );
 608                         free( psz_urlc );
 609                         free( p_es );
 610                         return VLC_ENOMEM;
 611                     }
 612                 }
 613                 free( p_64_sps );
 614                 free( p_64_pps );
 615             }
 616             if( !p_es->psz_fmtp )
 617                 p_es->psz_fmtp = strdup( "packetization-mode=1" );
 618             break;
 619         case VLC_CODEC_MP4V:
 620             p_es->psz_ptname = "MP4V-ES";
 621             if( p_fmt->i_extra > 0 )
 622             {
 623                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 624                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 625                 if( asprintf( &p_es->psz_fmtp,
 626                               "profile-level-id=3; config=%s;", p_hexa ) == -1 )
 627                     p_es->psz_fmtp = NULL;
 628                 free( p_hexa );
 629             }
 630             break;
 631         case VLC_CODEC_MP4A:
 632             p_es->psz_ptname = "mpeg4-generic";
 633             p_es->i_clock_rate = p_fmt->audio.i_rate;
 634             if( p_fmt->i_extra > 0 )
 635             {
 636                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 637                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 638                 if( asprintf( &p_es->psz_fmtp,
 639                               "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
 640                               "config=%s; SizeLength=13;IndexLength=3; "
 641                               "IndexDeltaLength=3; Profile=1;", p_hexa ) == -1 )
 642                     p_es->psz_fmtp = NULL;
 643                 free( p_hexa );
 644             }
 645             break;
 646         case VLC_FOURCC( 'm', 'p', '2', 't' ):
 647             p_media->psz_mux = "ts";
 648             p_es->i_payload_type = 33;
 649             p_es->psz_ptname = "MP2T";
 650             break;
 651         case VLC_FOURCC( 'm', 'p', '2', 'p' ):
 652             p_media->psz_mux = "ps";
 653             p_es->psz_ptname = "MP2P";
 654             break;
 655         case VLC_CODEC_AMR_NB:
 656             p_es->psz_ptname = "AMR";
 657             p_es->i_clock_rate = 8000;
 658             if(p_fmt->audio.i_channels == 2 )
 659                 p_es->i_channels = 2;
 660             p_es->psz_fmtp = strdup( "octet-align=1" );
 661             break;
 662         case VLC_CODEC_AMR_WB:
 663             p_es->psz_ptname = "AMR-WB";
 664             p_es->i_clock_rate = 16000;
 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
 670         default:
 671             msg_Err( p_vod, "cannot add this stream (unsupported "
 672                     "codec: %4.4s)", (char*)&p_fmt->i_codec );
 673             free( psz_urlc );
 674             free( p_es );
 675             return VLC_EGENERIC;
 676     }
 677
 678     p_es->p_rtsp_url =
 679         httpd_UrlNew( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL );
 680
 681     if( !p_es->p_rtsp_url )
 682     {
 683         msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
 684         free( psz_urlc );
 685         free( p_es );
 686         return VLC_EGENERIC;
 687     }
 688     free( psz_urlc );
 689
 690     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
 691                     RtspCallbackES, (void*)p_es );
 692     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 693                     RtspCallbackES, (void*)p_es );
 694     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
 695                     RtspCallbackES, (void*)p_es );
 696     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
 697                     RtspCallbackES, (void*)p_es );
 698
 699     es_format_Copy( &p_es->fmt, p_fmt );
 700     p_es->p_vod = p_vod;
 701     p_es->p_media = p_media;
 702
 703     vlc_mutex_lock( &p_media->lock );
 704     TAB_APPEND( p_media->i_es, p_media->es, p_es );
 705     vlc_mutex_unlock( &p_media->lock );
 706
 707     return VLC_SUCCESS;
 708 }
 709
 710 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
 711 {
 712     media_es_t *p_es = NULL;
 713
 714     /* Find the ES */
 715     for( int i = 0; i < p_media->i_es; i++ )
 716     {
 717         if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
 718             p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
 719             p_media->es[i]->fmt.i_id == p_fmt->i_id )
 720         {
 721             p_es = p_media->es[i];
 722         }
 723     }
 724     if( !p_es ) return;
 725
 726     msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );
 727
 728     vlc_mutex_lock( &p_media->lock );
 729     TAB_REMOVE( p_media->i_es, p_media->es, p_es );
 730     vlc_mutex_unlock( &p_media->lock );
 731
 732     free( p_es->psz_fmtp );
 733
 734     if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
 735     es_format_Clean( &p_es->fmt );
 736     free( p_es );
 737 }
 738
 739 static void CommandPush( vod_t *p_vod, rtsp_cmd_type_t i_type, vod_media_t *p_media, const char *psz_session, int64_t i_arg,
 740                          double f_arg, const char *psz_arg )
 741 {
 742     rtsp_cmd_t cmd;
 743     block_t *p_cmd;
 744
 745     memset( &cmd, 0, sizeof(cmd) );
 746     cmd.i_type = i_type;
 747     cmd.p_media = p_media;
 748     if( p_media )
 749         cmd.i_media_id = p_media->id;
 750     if( psz_session )
 751         cmd.psz_session = strdup(psz_session);
 752     cmd.i_arg = i_arg;
 753     cmd.f_arg = f_arg;
 754     if( psz_arg )
 755         cmd.psz_arg = strdup(psz_arg);
 756
 757     p_cmd = block_Alloc( sizeof(rtsp_cmd_t) );
 758     memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
 759
 760     block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
 761 }
 762
 763 static void* CommandThread( void *obj )
 764 {
 765     vod_t *p_vod = (vod_t*)obj;
 766     vod_sys_t *p_sys = p_vod->p_sys;
 767     int canc = vlc_savecancel ();
 768
 769     for( ;; )
 770     {
 771         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 772         rtsp_cmd_t cmd;
 773         vod_media_t *p_media = NULL;
 774         int i;
 775
 776         if( !p_block_cmd )
 777             break;
 778
 779         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 780         block_Release( p_block_cmd );
 781
 782         if( cmd.i_type == RTSP_CMD_TYPE_NONE )
 783             break;
 784
 785         if ( cmd.i_type == RTSP_CMD_TYPE_ADD )
 786         {
 787             TAB_APPEND( p_sys->i_media, p_sys->media, cmd.p_media );
 788             goto next;
 789         }
 790
 791         if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 792         {
 793             MediaDel(p_vod, cmd.p_media);
 794             goto next;
 795         }
 796
 797         /* */
 798         for( i = 0; i < p_sys->i_media; i++ )
 799         {
 800             if( p_sys->media[i]->id == cmd.i_media_id )
 801                 break;
 802         }
 803         if( i >= p_sys->i_media )
 804         {
 805             goto next;
 806         }
 807         p_media = p_sys->media[i];
 808
 809         switch( cmd.i_type )
 810         {
 811         case RTSP_CMD_TYPE_PLAY:
 812             cmd.i_arg = -1;
 813             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 814                               VOD_MEDIA_PLAY, cmd.psz_arg, &cmd.i_arg );
 815             break;
 816         case RTSP_CMD_TYPE_PAUSE:
 817             cmd.i_arg = -1;
 818             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 819                               VOD_MEDIA_PAUSE, &cmd.i_arg );
 820             break;
 821
 822         case RTSP_CMD_TYPE_STOP:
 823             vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
 824             break;
 825
 826         case RTSP_CMD_TYPE_SEEK:
 827             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 828                               VOD_MEDIA_SEEK, cmd.i_arg );
 829             break;
 830
 831         case RTSP_CMD_TYPE_REWIND:
 832             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 833                               VOD_MEDIA_REWIND, cmd.f_arg );
 834             break;
 835
 836         case RTSP_CMD_TYPE_FORWARD:
 837             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 838                               VOD_MEDIA_FORWARD, cmd.f_arg );
 839             break;
 840
 841         default:
 842             break;
 843         }
 844
 845     next:
 846         free( cmd.psz_session );
 847         free( cmd.psz_arg );
 848     }
 849
 850     vlc_restorecancel (canc);
 851     return NULL;
 852 }
 853
 854 /****************************************************************************
 855  * RTSP server implementation
 856  ****************************************************************************/
 857 static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
 858 {
 859     rtsp_client_t *p_rtsp = calloc( 1, sizeof(rtsp_client_t) );
 860
 861     if( !p_rtsp )
 862         return NULL;
 863     p_rtsp->es = 0;
 864
 865     p_rtsp->psz_session = psz_session;
 866     TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 867
 868     p_media->p_vod->p_sys->i_connections++;
 869     msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
 870              psz_session, p_media->p_vod->p_sys->i_throttle_users );
 871
 872     return p_rtsp;
 873 }
 874
 875 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
 876 {
 877     for( int i = 0; psz_session && i < p_media->i_rtsp; i++ )
 878     {
 879         if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
 880             return p_media->rtsp[i];
 881     }
 882
 883     return NULL;
 884 }
 885
 886 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
 887 {
 888     p_media->p_vod->p_sys->i_connections--;
 889     msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
 890              p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
 891
 892     while( p_rtsp->i_es )
 893     {
 894         p_rtsp->i_es--;
 895         free( p_rtsp->es[p_rtsp->i_es] );
 896     }
 897     free( p_rtsp->es );
 898
 899     TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 900
 901     free( p_rtsp->psz_session );
 902     free( p_rtsp );
 903 }
 904
 905
 906 static int64_t ParseNPT (const char *str)
 907 {
 908     locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
 909     locale_t oldloc = uselocale (loc);
 910     unsigned hour, min;
 911     float sec;
 912
 913     if (sscanf (str, "%u:%u:%f", &hour, &min, &sec) == 3)
 914         sec += ((hour * 60) + min) * 60;
 915     else
 916     if (sscanf (str, "%f", &sec) != 1)
 917         sec = 0.;
 918
 919     if (loc != (locale_t)0)
 920     {
 921         uselocale (oldloc);
 922         freelocale (loc);
 923     }
 924     return sec * CLOCK_FREQ;
 925 }
 926
 927
 928 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
 929                          httpd_message_t *answer, const httpd_message_t *query )
 930 {
 931     vod_media_t *p_media = (vod_media_t*)p_args;
 932     vod_t *p_vod = p_media->p_vod;
 933     const char *psz_transport = NULL;
 934     const char *psz_playnow = NULL; /* support option: x-playNow */
 935     const char *psz_session = NULL;
 936     const char *psz_cseq = NULL;
 937     rtsp_client_t *p_rtsp;
 938     int i_cseq = 0;
 939
 940     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
 941
 942     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
 943
 944     answer->i_proto   = HTTPD_PROTO_RTSP;
 945     answer->i_version = query->i_version;
 946     answer->i_type    = HTTPD_MSG_ANSWER;
 947     answer->i_body    = 0;
 948     answer->p_body    = NULL;
 949
 950     switch( query->i_type )
 951     {
 952         case HTTPD_MSG_SETUP:
 953         {
 954             psz_playnow = httpd_MsgGet( query, "x-playNow" );
 955             psz_transport = httpd_MsgGet( query, "Transport" );
 956             if( psz_transport == NULL )
 957             {
 958                 answer->i_status = 400;
 959                 break;
 960             }
 961             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
 962
 963             if( strstr( psz_transport, "unicast" ) &&
 964                 strstr( psz_transport, "client_port=" ) )
 965             {
 966                 rtsp_client_t *p_rtsp = NULL;
 967                 char ip[NI_MAXNUMERICHOST];
 968                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
 969                                    strlen("client_port=") );
 970
 971                 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
 972                     strstr( psz_transport, "RAW/RAW/UDP" ) )
 973                 {
 974                     p_media->psz_mux = p_vod->p_sys->psz_raw_mux;
 975                     p_media->b_raw = true;
 976                 }
 977
 978                 if( httpd_ClientIP( cl, ip, NULL ) == NULL )
 979                 {
 980                     answer->i_status = 500;
 981                     answer->i_body = 0;
 982                     answer->p_body = NULL;
 983                     break;
 984                 }
 985
 986                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
 987                          ip, i_port );
 988
 989                 psz_session = httpd_MsgGet( query, "Session" );
 990                 if( !psz_session || !*psz_session )
 991                 {
 992                     char *psz_new;
 993                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
 994                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
 995                     {
 996                         answer->i_status = 503;
 997                         answer->i_body = 0;
 998                         answer->p_body = NULL;
 999                         break;
1000                     }
1001 #warning Should use secure randomness here! (spoofing risk)
1002                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1003                         return VLC_ENOMEM;
1004                     psz_session = psz_new;
1005
1006                     p_rtsp = RtspClientNew( p_media, psz_new );
1007                     if( !p_rtsp )
1008                     {
1009                         answer->i_status = 454;
1010                         answer->i_body = 0;
1011                         answer->p_body = NULL;
1012                         break;
1013                     }
1014                 }
1015                 else
1016                 {
1017                     p_rtsp = RtspClientGet( p_media, psz_session );
1018                     if( !p_rtsp )
1019                     {
1020                         answer->i_status = 454;
1021                         answer->i_body = 0;
1022                         answer->p_body = NULL;
1023                         break;
1024                     }
1025                 }
1026
1027                 answer->i_status = 200;
1028                 answer->i_body = 0;
1029                 answer->p_body = NULL;
1030
1031                 if( p_media->b_raw )
1032                 {
1033                     p_rtsp->i_port_raw = i_port;
1034
1035                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1036                     {
1037                         httpd_MsgAdd( answer, "Transport",
1038                                       "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1039                                       i_port, i_port + 1 );
1040                     }
1041                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1042                     {
1043                         httpd_MsgAdd( answer, "Transport",
1044                                       "RAW/RAW/UDP;unicast;client_port=%d-%d",
1045                                       i_port, i_port + 1 );
1046                     }
1047                 }
1048                 else
1049                     httpd_MsgAdd( answer, "Transport",
1050                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1051                                   i_port, i_port + 1 );
1052             }
1053             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1054             {
1055                 answer->i_status = 461;
1056                 answer->i_body = 0;
1057                 answer->p_body = NULL;
1058             }
1059
1060             /* Intentional fall-through on x-playNow option in RTSP request */
1061             if( !psz_playnow )
1062                 break;
1063         }
1064
1065         case HTTPD_MSG_PLAY:
1066         {
1067             char *psz_output, ip[NI_MAXNUMERICHOST];
1068             int i_port_audio = 0, i_port_video = 0;
1069
1070             /* for now only multicast so easy */
1071             if( !psz_playnow )
1072             {
1073                 answer->i_status = 200;
1074                 answer->i_body = 0;
1075                 answer->p_body = NULL;
1076             }
1077
1078             if( !psz_session )
1079                 psz_session = httpd_MsgGet( query, "Session" );
1080             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1081
1082             p_rtsp = RtspClientGet( p_media, psz_session );
1083             if( !p_rtsp )
1084             {
1085                 answer->i_status = 500;
1086                 answer->i_body = 0;
1087                 answer->p_body = NULL;
1088                 break;
1089             }
1090
1091             if( p_rtsp->b_playing )
1092             {
1093                 const char *psz_position = httpd_MsgGet( query, "Range" );
1094                 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1095                 if( psz_position )
1096                     psz_position = strstr( psz_position, "npt=" );
1097                 if( psz_position && !psz_scale )
1098                 {
1099                     int64_t i_time = ParseNPT (psz_position + 4);
1100                     msg_Dbg( p_vod, "seeking request: %s", psz_position );
1101                     CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1102                                  psz_session, i_time, 0.0, NULL );
1103                 }
1104                 else if( psz_scale )
1105                 {
1106                     double f_scale = 0.0;
1107                     char *end;
1108
1109                     f_scale = us_strtod( psz_scale, &end );
1110                     if( end > psz_scale )
1111                     {
1112                         f_scale = (f_scale * 30.0);
1113                         if( psz_scale[0] == '-' ) /* rewind */
1114                         {
1115                             msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1116                             CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
1117                                          psz_session, 0, f_scale, NULL );
1118                         }
1119                         else if(psz_scale[0] != '1' ) /* fast-forward */
1120                         {
1121                             msg_Dbg( p_vod, "fastforward request: %s",
1122                                      psz_scale );
1123                             CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
1124                                          psz_session, 0, f_scale, NULL );
1125                         }
1126                     }
1127                 }
1128                 /* unpause, in case it's paused */
1129                 CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1130                              0, 0.0, "" );
1131                 break;
1132             }
1133
1134             if( httpd_ClientIP( cl, ip, NULL ) == NULL ) break;
1135
1136             p_rtsp->b_playing = true;
1137
1138             /* FIXME for != 1 video and 1 audio */
1139             for( int i = 0; i < p_rtsp->i_es; i++ )
1140             {
1141                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1142                     i_port_audio = p_rtsp->es[i]->i_port;
1143                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1144                     i_port_video = p_rtsp->es[i]->i_port;
1145             }
1146
1147             if( p_media->psz_mux )
1148             {
1149                 if( p_media->b_raw )
1150                 {
1151                     if( asprintf( &psz_output,
1152                               "std{access=udp,dst=%s:%i,mux=%s}",
1153                               ip, p_rtsp->i_port_raw, p_media->psz_mux ) < 0 )
1154                         return VLC_ENOMEM;
1155                 }
1156                 else
1157                 {
1158                     if( asprintf( &psz_output,
1159                               "rtp{dst=%s,port=%i,mux=%s}",
1160                               ip, i_port_video, p_media->psz_mux ) < 0 )
1161                         return VLC_ENOMEM;
1162                 }
1163             }
1164             else
1165             {
1166                 if( asprintf( &psz_output,
1167                               "rtp{dst=%s,port-video=%i,port-audio=%i}",
1168                               ip, i_port_video, i_port_audio ) < 0 )
1169                     return VLC_ENOMEM;
1170             }
1171
1172             CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1173                          0, 0.0, psz_output );
1174             free( psz_output );
1175             break;
1176         }
1177
1178         case HTTPD_MSG_DESCRIBE:
1179         {
1180             char *psz_sdp =
1181                 SDPGenerate( p_media, cl );
1182
1183             if( psz_sdp != NULL )
1184             {
1185                 answer->i_status = 200;
1186                 httpd_MsgAdd( answer, "Content-type",  "%s",
1187                               "application/sdp" );
1188
1189                 answer->p_body = (uint8_t *)psz_sdp;
1190                 answer->i_body = strlen( psz_sdp );
1191             }
1192             else
1193             {
1194                 answer->i_status = 500;
1195                 answer->p_body = NULL;
1196                 answer->i_body = 0;
1197             }
1198             break;
1199         }
1200
1201         case HTTPD_MSG_PAUSE:
1202             psz_session = httpd_MsgGet( query, "Session" );
1203             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1204
1205             p_rtsp = RtspClientGet( p_media, psz_session );
1206             if( !p_rtsp ) break;
1207
1208             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1209                          0, 0.0, NULL );
1210
1211             answer->i_status = 200;
1212             answer->i_body = 0;
1213             answer->p_body = NULL;
1214             break;
1215
1216         case HTTPD_MSG_TEARDOWN:
1217             /* for now only multicast so easy again */
1218             answer->i_status = 200;
1219             answer->i_body = 0;
1220             answer->p_body = NULL;
1221
1222             psz_session = httpd_MsgGet( query, "Session" );
1223             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1224
1225             p_rtsp = RtspClientGet( p_media, psz_session );
1226             if( !p_rtsp ) break;
1227
1228             CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1229                          0, 0.0, NULL );
1230             RtspClientDel( p_media, p_rtsp );
1231             break;
1232
1233         case HTTPD_MSG_GETPARAMETER:
1234             answer->i_status = 200;
1235             answer->i_body = 0;
1236             answer->p_body = NULL;
1237             break;
1238
1239         default:
1240             return VLC_EGENERIC;
1241     }
1242
1243     httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1244     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1245     psz_cseq = httpd_MsgGet( query, "Cseq" );
1246     psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1247     httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1248     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1249
1250     if( psz_session )
1251     {
1252          if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
1253              httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1254                p_media->p_vod->p_sys->i_session_timeout );
1255          else
1256               httpd_MsgAdd( answer, "Session", "%s", psz_session );
1257     }
1258
1259     return VLC_SUCCESS;
1260 }
1261
1262 static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1263                            httpd_message_t *answer,
1264                            const httpd_message_t *query )
1265 {
1266     media_es_t *p_es = (media_es_t*)p_args;
1267     vod_media_t *p_media = p_es->p_media;
1268     vod_t *p_vod = p_media->p_vod;
1269     rtsp_client_t *p_rtsp = NULL;
1270     const char *psz_transport = NULL;
1271     const char *psz_playnow = NULL; /* support option: x-playNow */
1272     const char *psz_session = NULL;
1273     const char *psz_position = NULL;
1274     const char *psz_cseq = NULL;
1275     int i_cseq = 0;
1276
1277     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1278
1279     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1280
1281     answer->i_proto   = HTTPD_PROTO_RTSP;
1282     answer->i_version = query->i_version;
1283     answer->i_type    = HTTPD_MSG_ANSWER;
1284     answer->i_body    = 0;
1285     answer->p_body      = NULL;
1286
1287     switch( query->i_type )
1288     {
1289         case HTTPD_MSG_SETUP:
1290             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1291             psz_transport = httpd_MsgGet( query, "Transport" );
1292
1293             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1294
1295             if( strstr( psz_transport, "unicast" ) &&
1296                 strstr( psz_transport, "client_port=" ) )
1297             {
1298                 rtsp_client_t *p_rtsp = NULL;
1299                 rtsp_client_es_t *p_rtsp_es = NULL;
1300                 char ip[NI_MAXNUMERICHOST];
1301                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
1302                                    strlen("client_port=") );
1303
1304                 if( httpd_ClientIP( cl, ip, NULL ) == NULL )
1305                 {
1306                     answer->i_status = 500;
1307                     answer->i_body = 0;
1308                     answer->p_body = NULL;
1309                     break;
1310                 }
1311
1312                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1313                         ip, i_port );
1314
1315                 psz_session = httpd_MsgGet( query, "Session" );
1316                 if( !psz_session || !*psz_session )
1317                 {
1318                     char *psz_new;
1319                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1320                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1321                     {
1322                         answer->i_status = 503;
1323                         answer->i_body = 0;
1324                         answer->p_body = NULL;
1325                         break;
1326                     }
1327 #warning Session ID should be securely random (spoofing risk)
1328                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1329                         return VLC_ENOMEM;
1330                     psz_session = psz_new;
1331
1332                     p_rtsp = RtspClientNew( p_media, psz_new );
1333                     if( !p_rtsp )
1334                     {
1335                         answer->i_status = 454;
1336                         answer->i_body = 0;
1337                         answer->p_body = NULL;
1338                         break;
1339                     }
1340                 }
1341                 else
1342                 {
1343                     p_rtsp = RtspClientGet( p_media, psz_session );
1344                     if( !p_rtsp )
1345                     {
1346                         answer->i_status = 454;
1347                         answer->i_body = 0;
1348                         answer->p_body = NULL;
1349                         break;
1350                     }
1351                 }
1352
1353                 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1354                 if( !p_rtsp_es )
1355                 {
1356                     answer->i_status = 500;
1357                     answer->i_body = 0;
1358                     answer->p_body = NULL;
1359                     break;
1360                 }
1361                 p_rtsp_es->i_port = i_port;
1362                 p_rtsp_es->p_media_es = p_es;
1363                 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1364
1365                 answer->i_status = 200;
1366                 answer->i_body = 0;
1367                 answer->p_body = NULL;
1368
1369                 if( p_media->b_raw )
1370                 {
1371                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1372                     {
1373                         httpd_MsgAdd( answer, "Transport",
1374                                      "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1375                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1376                     }
1377                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1378                     {
1379                         httpd_MsgAdd( answer, "Transport",
1380                                      "RAW/RAW/UDP;unicast;client_port=%d-%d",
1381                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1382                     }
1383                 }
1384                 else
1385                 {
1386                     httpd_MsgAdd( answer, "Transport",
1387                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1388                                   p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1389                 }
1390             }
1391             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1392             {
1393                 answer->i_status = 461;
1394                 answer->i_body = 0;
1395                 answer->p_body = NULL;
1396             }
1397
1398             /* Intentional fall-through on x-playNow option in RTSP request */
1399             if( !psz_playnow )
1400                 break;
1401
1402         case HTTPD_MSG_PLAY:
1403             /* This is kind of a kludge. Should we only support Aggregate
1404              * Operations ? */
1405             psz_session = httpd_MsgGet( query, "Session" );
1406             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1407
1408             p_rtsp = RtspClientGet( p_media, psz_session );
1409
1410             psz_position = httpd_MsgGet( query, "Range" );
1411             if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1412             if( psz_position )
1413             {
1414                 int64_t i_time = ParseNPT (psz_position + 4);
1415                 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1416                 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1417                              psz_session, i_time, 0.0, NULL );
1418             }
1419
1420             if( !psz_playnow )
1421             {
1422                 answer->i_status = 200;
1423                 answer->i_body = 0;
1424                 answer->p_body = NULL;
1425             }
1426             break;
1427
1428         case HTTPD_MSG_TEARDOWN:
1429             answer->i_status = 200;
1430             answer->i_body = 0;
1431             answer->p_body = NULL;
1432
1433             psz_session = httpd_MsgGet( query, "Session" );
1434             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1435
1436             p_rtsp = RtspClientGet( p_media, psz_session );
1437             if( !p_rtsp ) break;
1438
1439             for( int i = 0; i < p_rtsp->i_es; i++ )
1440             {
1441                 rtsp_client_es_t *es = p_rtsp->es[i];
1442                 if( es->p_media_es == p_es )
1443                 {
1444                     TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, es );
1445                     break;
1446                 }
1447             }
1448
1449             if( !p_rtsp->i_es )
1450             {
1451                 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1452                              0, 0.0, NULL );
1453                 RtspClientDel( p_media, p_rtsp );
1454             }
1455             break;
1456
1457         case HTTPD_MSG_PAUSE:
1458             /* This is kind of a kludge. Should we only support Aggregate
1459              * Operations ? */
1460             psz_session = httpd_MsgGet( query, "Session" );
1461             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1462
1463             p_rtsp = RtspClientGet( p_media, psz_session );
1464             if( !p_rtsp ) break;
1465
1466             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1467                          0, 0.0, NULL );
1468
1469             answer->i_status = 200;
1470             answer->i_body = 0;
1471             answer->p_body = NULL;
1472             break;
1473
1474         default:
1475             return VLC_EGENERIC;
1476             break;
1477     }
1478
1479     httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1480     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1481     psz_cseq = httpd_MsgGet( query, "Cseq" );
1482     if (psz_cseq)
1483         i_cseq = atoi( psz_cseq );
1484     else
1485         i_cseq = 0;
1486     httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1487     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1488
1489     if( psz_session )
1490         httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1491
1492     return VLC_SUCCESS;
1493 }
1494
1495 /*****************************************************************************
1496  * SDPGenerate: TODO
1497  * FIXME: need to be moved to a common place ?
1498  *****************************************************************************/
1499 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1500 {
1501     char *psz_sdp, ip[NI_MAXNUMERICHOST];
1502     const char *psz_control;
1503     int port;
1504
1505     if( httpd_ServerIP( cl, ip, &port ) == NULL )
1506         return NULL;
1507
1508     bool ipv6 = ( strchr( ip, ':' ) != NULL );
1509
1510     psz_control = ipv6 ? p_media->psz_rtsp_control_v6
1511                        : p_media->psz_rtsp_control_v4;
1512
1513     /* Dummy destination address for RTSP */
1514     struct sockaddr_storage dst;
1515     socklen_t dstlen = ipv6 ? sizeof( struct sockaddr_in6 )
1516                             : sizeof( struct sockaddr_in );
1517     memset (&dst, 0, dstlen);
1518     dst.ss_family = ipv6 ? AF_INET6 : AF_INET;
1519 #ifdef HAVE_SA_LEN
1520     dst.ss_len = dstlen;
1521 #endif
1522
1523     psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_media->p_vod ), "sout-rtp-",
1524                              NULL, 0, (struct sockaddr *)&dst, dstlen );
1525     if( psz_sdp == NULL )
1526         return NULL;
1527
1528     if( p_media->i_length > 0 )
1529     {
1530         lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
1531         sdp_AddAttribute( &psz_sdp, "range","npt=0-%lld.%03u", d.quot,
1532                           (unsigned)d.rem );
1533     }
1534
1535     for( int i = 0; i < p_media->i_es; i++ )
1536     {
1537         media_es_t *p_es = p_media->es[i];
1538         const char *mime_major; /* major MIME type */
1539
1540         switch( p_es->fmt.i_cat )
1541         {
1542             case VIDEO_ES:
1543                 mime_major = "video";
1544                 break;
1545             case AUDIO_ES:
1546                 mime_major = "audio";
1547                 break;
1548             case SPU_ES:
1549                 mime_major = "text";
1550                 break;
1551             default:
1552                 continue;
1553         }
1554
1555         sdp_AddMedia( &psz_sdp, mime_major, "RTP/AVP", 0 /* p_es->i_port */,
1556                       p_es->i_payload_type, false, 0,
1557                       p_es->psz_ptname, p_es->i_clock_rate, p_es->i_channels,
1558                       p_es->psz_fmtp );
1559
1560         sdp_AddAttribute( &psz_sdp, "control", psz_control, ip, port, i );
1561     }
1562
1563     return psz_sdp;
1564 }