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         goto error;
 373
 374     p_media->p_rtsp_url =
 375         httpd_UrlNew( p_sys->p_rtsp_host, p_media->psz_rtsp_path, NULL, NULL );
 376
 377     if( !p_media->p_rtsp_url )
 378     {
 379         msg_Err( p_vod, "cannot create RTSP url (%s)", p_media->psz_rtsp_path);
 380         goto error;
 381     }
 382
 383     msg_Dbg( p_vod, "created RTSP url: %s", p_media->psz_rtsp_path );
 384
 385     if( asprintf( &p_media->psz_rtsp_control_v4,
 386                   "rtsp://%%s:%%d%s/trackID=%%d",
 387                   p_media->psz_rtsp_path ) < 0 )
 388         goto error;
 389
 390     if( asprintf( &p_media->psz_rtsp_control_v6,
 391                   "rtsp://[%%s]:%%d%s/trackID=%%d",
 392                   p_media->psz_rtsp_path ) < 0 )
 393         goto error;
 394
 395     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_SETUP,
 396                     RtspCallback, (void*)p_media );
 397     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_DESCRIBE,
 398                     RtspCallback, (void*)p_media );
 399     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PLAY,
 400                     RtspCallback, (void*)p_media );
 401     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PAUSE,
 402                     RtspCallback, (void*)p_media );
 403     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_GETPARAMETER,
 404                     RtspCallback, (void*)p_media );
 405     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 406                     RtspCallback, (void*)p_media );
 407
 408     p_media->p_vod = p_vod;
 409
 410     vlc_mutex_init( &p_media->lock );
 411
 412     p_media->i_length = input_item_GetDuration( p_item );
 413
 414     vlc_mutex_lock( &p_item->lock );
 415     msg_Dbg( p_vod, "media has %i declared ES", p_item->i_es );
 416     for( int i = 0; i < p_item->i_es; i++ )
 417     {
 418         MediaAddES( p_vod, p_media, p_item->es[i] );
 419     }
 420     vlc_mutex_unlock( &p_item->lock );
 421
 422     CommandPush( p_vod, RTSP_CMD_TYPE_ADD, p_media, NULL, 0, 0.0, NULL );
 423     return p_media;
 424
 425 error:
 426     if( p_media )
 427     {
 428         free( p_media->psz_rtsp_control_v4 );
 429         if( p_media->p_rtsp_url )
 430             httpd_UrlDelete( p_media->p_rtsp_url );
 431         free( p_media->psz_rtsp_path );
 432         free( p_media );
 433     }
 434     return NULL;
 435 }
 436
 437 static void MediaAskDel ( vod_t *p_vod, vod_media_t *p_media )
 438 {
 439     CommandPush( p_vod, RTSP_CMD_TYPE_DEL, p_media, NULL, 0, 0.0, NULL );
 440 }
 441
 442 static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
 443 {
 444     vod_sys_t *p_sys = p_vod->p_sys;
 445
 446     msg_Dbg( p_vod, "deleting media: %s", p_media->psz_rtsp_path );
 447
 448     TAB_REMOVE( p_sys->i_media, p_sys->media, p_media );
 449
 450     httpd_UrlDelete( p_media->p_rtsp_url );
 451
 452     while( p_media->i_rtsp > 0 )
 453         RtspClientDel( p_media, p_media->rtsp[0] );
 454     TAB_CLEAN( p_media->i_rtsp, p_media->rtsp );
 455
 456     free( p_media->psz_rtsp_path );
 457     free( p_media->psz_rtsp_control_v6 );
 458     free( p_media->psz_rtsp_control_v4 );
 459
 460     while( p_media->i_es )
 461         MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );
 462     TAB_CLEAN( p_media->i_es, p_media->es );
 463
 464     vlc_mutex_destroy( &p_media->lock );
 465
 466     free( p_media );
 467 }
 468
 469 static int MediaAddES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt )
 470 {
 471     char *psz_urlc;
 472
 473     media_es_t *p_es = calloc( 1, sizeof(media_es_t) );
 474     if( !p_es )
 475         return VLC_ENOMEM;
 476
 477     p_media->psz_mux = NULL;
 478
 479     /* TODO: update SDP, etc... */
 480     if( asprintf( &psz_urlc, "%s/trackID=%d",
 481               p_media->psz_rtsp_path, p_media->i_es ) < 0 )
 482     {
 483         free( p_es );
 484         return VLC_ENOMEM;
 485     }
 486     msg_Dbg( p_vod, "  - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
 487
 488     /* Dynamic payload. No conflict since we put each ES in its own
 489      * RTP session */
 490     p_es->i_payload_type = 96;
 491     p_es->i_clock_rate = 90000;
 492     p_es->i_channels = 1;
 493
 494     switch( p_fmt->i_codec )
 495     {
 496         case VLC_CODEC_S16B:
 497             if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
 498             {
 499                 p_es->i_payload_type = 11;
 500             }
 501             else if( p_fmt->audio.i_channels == 2 &&
 502                      p_fmt->audio.i_rate == 44100 )
 503             {
 504                 p_es->i_payload_type = 10;
 505             }
 506             p_es->psz_ptname = "L16";
 507             p_es->i_clock_rate = p_fmt->audio.i_rate;
 508             p_es->i_channels = p_fmt->audio.i_channels;
 509             break;
 510         case VLC_CODEC_U8:
 511             p_es->psz_ptname = "L8";
 512             p_es->i_clock_rate = p_fmt->audio.i_rate;
 513             p_es->i_channels = p_fmt->audio.i_channels;
 514             break;
 515         case VLC_CODEC_MPGA:
 516             p_es->i_payload_type = 14;
 517             p_es->psz_ptname = "MPA";
 518             break;
 519         case VLC_CODEC_MPGV:
 520             p_es->i_payload_type = 32;
 521             p_es->psz_ptname = "MPV";
 522             break;
 523         case VLC_CODEC_A52:
 524             p_es->psz_ptname = "ac3";
 525             p_es->i_clock_rate = p_fmt->audio.i_rate;
 526             break;
 527         case VLC_CODEC_H263:
 528             p_es->psz_ptname = "H263-1998";
 529             break;
 530         case VLC_CODEC_H264:
 531             p_es->psz_ptname = "H264";
 532             p_es->psz_fmtp = NULL;
 533             /* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
 534             if( p_fmt->i_extra > 0 )
 535             {
 536                 uint8_t *p_buffer = p_fmt->p_extra;
 537                 int     i_buffer = p_fmt->i_extra;
 538                 char    *p_64_sps = NULL;
 539                 char    *p_64_pps = NULL;
 540                 char    hexa[6+1];
 541
 542                 while( i_buffer > 4 )
 543                 {
 544                     int i_offset    = 0;
 545                     int i_size      = 0;
 546
 547                     while( p_buffer[0] != 0 || p_buffer[1] != 0 ||
 548                            p_buffer[2] != 1 )
 549                     {
 550                         p_buffer++;
 551                         i_buffer--;
 552                         if( i_buffer == 0 ) break;
 553                     }
 554
 555                     if( i_buffer < 4 || memcmp(p_buffer, "\x00\x00\x01", 3 ) )
 556                     {
 557                         /* No startcode found.. */
 558                         break;
 559                     }
 560                     p_buffer += 3;
 561                     i_buffer -= 3;
 562
 563                     const int i_nal_type = p_buffer[0]&0x1f;
 564
 565                     i_size = i_buffer;
 566                     for( i_offset = 0; i_offset+2 < i_buffer ; i_offset++)
 567                     {
 568                         if( !memcmp(p_buffer + i_offset, "\x00\x00\x01", 3 ) )
 569                         {
 570                             /* we found another startcode */
 571                             while( i_offset > 0 && 0 == p_buffer[ i_offset - 1 ] )
 572                                 i_offset--;
 573                             i_size = i_offset;
 574                             break;
 575                         }
 576                     }
 577
 578                     if( i_size == 0 )
 579                     {
 580                         /* No-info found in nal */
 581                         continue;
 582                     }
 583
 584                     if( i_nal_type == 7 )
 585                     {
 586                         free( p_64_sps );
 587                         p_64_sps = vlc_b64_encode_binary( p_buffer, i_size );
 588                         /* XXX: nothing ensures that i_size >= 4 ?? */
 589                         sprintf_hexa( hexa, &p_buffer[1], 3 );
 590                     }
 591                     else if( i_nal_type == 8 )
 592                     {
 593                         free( p_64_pps );
 594                         p_64_pps = vlc_b64_encode_binary( p_buffer, i_size );
 595                     }
 596                     i_buffer -= i_size;
 597                     p_buffer += i_size;
 598                 }
 599                 /* */
 600                 if( p_64_sps && p_64_pps )
 601                 {
 602                     if( asprintf( &p_es->psz_fmtp,
 603                                   "packetization-mode=1;profile-level-id=%s;"
 604                                   "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
 605                                   p_64_pps ) < 0 )
 606                     {
 607                         free( p_64_sps );
 608                         free( p_64_pps );
 609                         free( psz_urlc );
 610                         free( p_es );
 611                         return VLC_ENOMEM;
 612                     }
 613                 }
 614                 free( p_64_sps );
 615                 free( p_64_pps );
 616             }
 617             if( !p_es->psz_fmtp )
 618                 p_es->psz_fmtp = strdup( "packetization-mode=1" );
 619             break;
 620         case VLC_CODEC_MP4V:
 621             p_es->psz_ptname = "MP4V-ES";
 622             if( p_fmt->i_extra > 0 )
 623             {
 624                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 625                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 626                 if( asprintf( &p_es->psz_fmtp,
 627                               "profile-level-id=3; config=%s;", p_hexa ) == -1 )
 628                     p_es->psz_fmtp = NULL;
 629                 free( p_hexa );
 630             }
 631             break;
 632         case VLC_CODEC_MP4A:
 633             p_es->psz_ptname = "mpeg4-generic";
 634             p_es->i_clock_rate = p_fmt->audio.i_rate;
 635             if( p_fmt->i_extra > 0 )
 636             {
 637                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 638                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 639                 if( asprintf( &p_es->psz_fmtp,
 640                               "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
 641                               "config=%s; SizeLength=13;IndexLength=3; "
 642                               "IndexDeltaLength=3; Profile=1;", p_hexa ) == -1 )
 643                     p_es->psz_fmtp = NULL;
 644                 free( p_hexa );
 645             }
 646             break;
 647         case VLC_FOURCC( 'm', 'p', '2', 't' ):
 648             p_media->psz_mux = "ts";
 649             p_es->i_payload_type = 33;
 650             p_es->psz_ptname = "MP2T";
 651             break;
 652         case VLC_FOURCC( 'm', 'p', '2', 'p' ):
 653             p_media->psz_mux = "ps";
 654             p_es->psz_ptname = "MP2P";
 655             break;
 656         case VLC_CODEC_AMR_NB:
 657             p_es->psz_ptname = "AMR";
 658             p_es->i_clock_rate = 8000;
 659             if(p_fmt->audio.i_channels == 2 )
 660                 p_es->i_channels = 2;
 661             p_es->psz_fmtp = strdup( "octet-align=1" );
 662             break;
 663         case VLC_CODEC_AMR_WB:
 664             p_es->psz_ptname = "AMR-WB";
 665             p_es->i_clock_rate = 16000;
 666             if(p_fmt->audio.i_channels == 2 )
 667                 p_es->i_channels = 2;
 668             p_es->psz_fmtp = strdup( "octet-align=1" );
 669             break;
 670
 671         default:
 672             msg_Err( p_vod, "cannot add this stream (unsupported "
 673                     "codec: %4.4s)", (char*)&p_fmt->i_codec );
 674             free( psz_urlc );
 675             free( p_es );
 676             return VLC_EGENERIC;
 677     }
 678
 679     p_es->p_rtsp_url =
 680         httpd_UrlNew( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL );
 681
 682     if( !p_es->p_rtsp_url )
 683     {
 684         msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
 685         free( psz_urlc );
 686         free( p_es );
 687         return VLC_EGENERIC;
 688     }
 689     free( psz_urlc );
 690
 691     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
 692                     RtspCallbackES, (void*)p_es );
 693     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 694                     RtspCallbackES, (void*)p_es );
 695     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
 696                     RtspCallbackES, (void*)p_es );
 697     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
 698                     RtspCallbackES, (void*)p_es );
 699
 700     es_format_Copy( &p_es->fmt, p_fmt );
 701     p_es->p_vod = p_vod;
 702     p_es->p_media = p_media;
 703
 704     vlc_mutex_lock( &p_media->lock );
 705     TAB_APPEND( p_media->i_es, p_media->es, p_es );
 706     vlc_mutex_unlock( &p_media->lock );
 707
 708     return VLC_SUCCESS;
 709 }
 710
 711 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
 712 {
 713     media_es_t *p_es = NULL;
 714
 715     /* Find the ES */
 716     for( int i = 0; i < p_media->i_es; i++ )
 717     {
 718         if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
 719             p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
 720             p_media->es[i]->fmt.i_id == p_fmt->i_id )
 721         {
 722             p_es = p_media->es[i];
 723         }
 724     }
 725     if( !p_es ) return;
 726
 727     msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );
 728
 729     vlc_mutex_lock( &p_media->lock );
 730     TAB_REMOVE( p_media->i_es, p_media->es, p_es );
 731     vlc_mutex_unlock( &p_media->lock );
 732
 733     free( p_es->psz_fmtp );
 734
 735     if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
 736     es_format_Clean( &p_es->fmt );
 737     free( p_es );
 738 }
 739
 740 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,
 741                          double f_arg, const char *psz_arg )
 742 {
 743     rtsp_cmd_t cmd;
 744     block_t *p_cmd;
 745
 746     memset( &cmd, 0, sizeof(cmd) );
 747     cmd.i_type = i_type;
 748     cmd.p_media = p_media;
 749     if( p_media )
 750         cmd.i_media_id = p_media->id;
 751     if( psz_session )
 752         cmd.psz_session = strdup(psz_session);
 753     cmd.i_arg = i_arg;
 754     cmd.f_arg = f_arg;
 755     if( psz_arg )
 756         cmd.psz_arg = strdup(psz_arg);
 757
 758     p_cmd = block_Alloc( sizeof(rtsp_cmd_t) );
 759     memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
 760
 761     block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
 762 }
 763
 764 static void* CommandThread( void *obj )
 765 {
 766     vod_t *p_vod = (vod_t*)obj;
 767     vod_sys_t *p_sys = p_vod->p_sys;
 768     int canc = vlc_savecancel ();
 769
 770     for( ;; )
 771     {
 772         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 773         rtsp_cmd_t cmd;
 774         vod_media_t *p_media = NULL;
 775         int i;
 776
 777         if( !p_block_cmd )
 778             break;
 779
 780         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 781         block_Release( p_block_cmd );
 782
 783         if( cmd.i_type == RTSP_CMD_TYPE_NONE )
 784             break;
 785
 786         if ( cmd.i_type == RTSP_CMD_TYPE_ADD )
 787         {
 788             TAB_APPEND( p_sys->i_media, p_sys->media, cmd.p_media );
 789             goto next;
 790         }
 791
 792         if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 793         {
 794             MediaDel(p_vod, cmd.p_media);
 795             goto next;
 796         }
 797
 798         /* */
 799         for( i = 0; i < p_sys->i_media; i++ )
 800         {
 801             if( p_sys->media[i]->id == cmd.i_media_id )
 802                 break;
 803         }
 804         if( i >= p_sys->i_media )
 805         {
 806             goto next;
 807         }
 808         p_media = p_sys->media[i];
 809
 810         switch( cmd.i_type )
 811         {
 812         case RTSP_CMD_TYPE_PLAY:
 813             cmd.i_arg = -1;
 814             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 815                               VOD_MEDIA_PLAY, cmd.psz_arg, &cmd.i_arg );
 816             break;
 817         case RTSP_CMD_TYPE_PAUSE:
 818             cmd.i_arg = -1;
 819             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 820                               VOD_MEDIA_PAUSE, &cmd.i_arg );
 821             break;
 822
 823         case RTSP_CMD_TYPE_STOP:
 824             vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
 825             break;
 826
 827         case RTSP_CMD_TYPE_SEEK:
 828             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 829                               VOD_MEDIA_SEEK, cmd.i_arg );
 830             break;
 831
 832         case RTSP_CMD_TYPE_REWIND:
 833             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 834                               VOD_MEDIA_REWIND, cmd.f_arg );
 835             break;
 836
 837         case RTSP_CMD_TYPE_FORWARD:
 838             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 839                               VOD_MEDIA_FORWARD, cmd.f_arg );
 840             break;
 841
 842         default:
 843             break;
 844         }
 845
 846     next:
 847         free( cmd.psz_session );
 848         free( cmd.psz_arg );
 849     }
 850
 851     vlc_restorecancel (canc);
 852     return NULL;
 853 }
 854
 855 /****************************************************************************
 856  * RTSP server implementation
 857  ****************************************************************************/
 858 static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
 859 {
 860     rtsp_client_t *p_rtsp = calloc( 1, sizeof(rtsp_client_t) );
 861
 862     if( !p_rtsp )
 863         return NULL;
 864     p_rtsp->es = 0;
 865
 866     p_rtsp->psz_session = psz_session;
 867     TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 868
 869     p_media->p_vod->p_sys->i_connections++;
 870     msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
 871              psz_session, p_media->p_vod->p_sys->i_throttle_users );
 872
 873     return p_rtsp;
 874 }
 875
 876 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
 877 {
 878     for( int i = 0; psz_session && i < p_media->i_rtsp; i++ )
 879     {
 880         if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
 881             return p_media->rtsp[i];
 882     }
 883
 884     return NULL;
 885 }
 886
 887 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
 888 {
 889     p_media->p_vod->p_sys->i_connections--;
 890     msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
 891              p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
 892
 893     while( p_rtsp->i_es )
 894     {
 895         p_rtsp->i_es--;
 896         free( p_rtsp->es[p_rtsp->i_es] );
 897     }
 898     free( p_rtsp->es );
 899
 900     TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 901
 902     free( p_rtsp->psz_session );
 903     free( p_rtsp );
 904 }
 905
 906
 907 static int64_t ParseNPT (const char *str)
 908 {
 909     locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
 910     locale_t oldloc = uselocale (loc);
 911     unsigned hour, min;
 912     float sec;
 913
 914     if (sscanf (str, "%u:%u:%f", &hour, &min, &sec) == 3)
 915         sec += ((hour * 60) + min) * 60;
 916     else
 917     if (sscanf (str, "%f", &sec) != 1)
 918         sec = 0.;
 919
 920     if (loc != (locale_t)0)
 921     {
 922         uselocale (oldloc);
 923         freelocale (loc);
 924     }
 925     return sec * CLOCK_FREQ;
 926 }
 927
 928
 929 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
 930                          httpd_message_t *answer, const httpd_message_t *query )
 931 {
 932     vod_media_t *p_media = (vod_media_t*)p_args;
 933     vod_t *p_vod = p_media->p_vod;
 934     const char *psz_transport = NULL;
 935     const char *psz_playnow = NULL; /* support option: x-playNow */
 936     const char *psz_session = NULL;
 937     const char *psz_cseq = NULL;
 938     rtsp_client_t *p_rtsp;
 939     int i_cseq = 0;
 940
 941     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
 942
 943     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
 944
 945     answer->i_proto   = HTTPD_PROTO_RTSP;
 946     answer->i_version = query->i_version;
 947     answer->i_type    = HTTPD_MSG_ANSWER;
 948     answer->i_body    = 0;
 949     answer->p_body    = NULL;
 950
 951     switch( query->i_type )
 952     {
 953         case HTTPD_MSG_SETUP:
 954         {
 955             psz_playnow = httpd_MsgGet( query, "x-playNow" );
 956             psz_transport = httpd_MsgGet( query, "Transport" );
 957             if( psz_transport == NULL )
 958             {
 959                 answer->i_status = 400;
 960                 break;
 961             }
 962             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
 963
 964             if( strstr( psz_transport, "unicast" ) &&
 965                 strstr( psz_transport, "client_port=" ) )
 966             {
 967                 rtsp_client_t *p_rtsp = NULL;
 968                 char ip[NI_MAXNUMERICHOST];
 969                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
 970                                    strlen("client_port=") );
 971
 972                 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
 973                     strstr( psz_transport, "RAW/RAW/UDP" ) )
 974                 {
 975                     p_media->psz_mux = p_vod->p_sys->psz_raw_mux;
 976                     p_media->b_raw = true;
 977                 }
 978
 979                 if( httpd_ClientIP( cl, ip, NULL ) == NULL )
 980                 {
 981                     answer->i_status = 500;
 982                     answer->i_body = 0;
 983                     answer->p_body = NULL;
 984                     break;
 985                 }
 986
 987                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
 988                          ip, i_port );
 989
 990                 psz_session = httpd_MsgGet( query, "Session" );
 991                 if( !psz_session || !*psz_session )
 992                 {
 993                     char *psz_new;
 994                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
 995                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
 996                     {
 997                         answer->i_status = 503;
 998                         answer->i_body = 0;
 999                         answer->p_body = NULL;
1000                         break;
1001                     }
1002 #warning Should use secure randomness here! (spoofing risk)
1003                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1004                         return VLC_ENOMEM;
1005                     psz_session = psz_new;
1006
1007                     p_rtsp = RtspClientNew( p_media, psz_new );
1008                     if( !p_rtsp )
1009                     {
1010                         answer->i_status = 454;
1011                         answer->i_body = 0;
1012                         answer->p_body = NULL;
1013                         break;
1014                     }
1015                 }
1016                 else
1017                 {
1018                     p_rtsp = RtspClientGet( p_media, psz_session );
1019                     if( !p_rtsp )
1020                     {
1021                         answer->i_status = 454;
1022                         answer->i_body = 0;
1023                         answer->p_body = NULL;
1024                         break;
1025                     }
1026                 }
1027
1028                 answer->i_status = 200;
1029                 answer->i_body = 0;
1030                 answer->p_body = NULL;
1031
1032                 if( p_media->b_raw )
1033                 {
1034                     p_rtsp->i_port_raw = i_port;
1035
1036                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1037                     {
1038                         httpd_MsgAdd( answer, "Transport",
1039                                       "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1040                                       i_port, i_port + 1 );
1041                     }
1042                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1043                     {
1044                         httpd_MsgAdd( answer, "Transport",
1045                                       "RAW/RAW/UDP;unicast;client_port=%d-%d",
1046                                       i_port, i_port + 1 );
1047                     }
1048                 }
1049                 else
1050                     httpd_MsgAdd( answer, "Transport",
1051                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1052                                   i_port, i_port + 1 );
1053             }
1054             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1055             {
1056                 answer->i_status = 461;
1057                 answer->i_body = 0;
1058                 answer->p_body = NULL;
1059             }
1060
1061             /* Intentional fall-through on x-playNow option in RTSP request */
1062             if( !psz_playnow )
1063                 break;
1064         }
1065
1066         case HTTPD_MSG_PLAY:
1067         {
1068             char *psz_output, ip[NI_MAXNUMERICHOST];
1069             int i_port_audio = 0, i_port_video = 0;
1070
1071             /* for now only multicast so easy */
1072             if( !psz_playnow )
1073             {
1074                 answer->i_status = 200;
1075                 answer->i_body = 0;
1076                 answer->p_body = NULL;
1077             }
1078
1079             if( !psz_session )
1080                 psz_session = httpd_MsgGet( query, "Session" );
1081             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1082
1083             p_rtsp = RtspClientGet( p_media, psz_session );
1084             if( !p_rtsp )
1085             {
1086                 answer->i_status = 500;
1087                 answer->i_body = 0;
1088                 answer->p_body = NULL;
1089                 break;
1090             }
1091
1092             if( p_rtsp->b_playing )
1093             {
1094                 const char *psz_position = httpd_MsgGet( query, "Range" );
1095                 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1096                 if( psz_position )
1097                     psz_position = strstr( psz_position, "npt=" );
1098                 if( psz_position && !psz_scale )
1099                 {
1100                     int64_t i_time = ParseNPT (psz_position + 4);
1101                     msg_Dbg( p_vod, "seeking request: %s", psz_position );
1102                     CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1103                                  psz_session, i_time, 0.0, NULL );
1104                 }
1105                 else if( psz_scale )
1106                 {
1107                     double f_scale = 0.0;
1108                     char *end;
1109
1110                     f_scale = us_strtod( psz_scale, &end );
1111                     if( end > psz_scale )
1112                     {
1113                         f_scale = (f_scale * 30.0);
1114                         if( psz_scale[0] == '-' ) /* rewind */
1115                         {
1116                             msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1117                             CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
1118                                          psz_session, 0, f_scale, NULL );
1119                         }
1120                         else if(psz_scale[0] != '1' ) /* fast-forward */
1121                         {
1122                             msg_Dbg( p_vod, "fastforward request: %s",
1123                                      psz_scale );
1124                             CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
1125                                          psz_session, 0, f_scale, NULL );
1126                         }
1127                     }
1128                 }
1129                 /* unpause, in case it's paused */
1130                 CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1131                              0, 0.0, "" );
1132                 break;
1133             }
1134
1135             if( httpd_ClientIP( cl, ip, NULL ) == NULL ) break;
1136
1137             p_rtsp->b_playing = true;
1138
1139             /* FIXME for != 1 video and 1 audio */
1140             for( int i = 0; i < p_rtsp->i_es; i++ )
1141             {
1142                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1143                     i_port_audio = p_rtsp->es[i]->i_port;
1144                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1145                     i_port_video = p_rtsp->es[i]->i_port;
1146             }
1147
1148             if( p_media->psz_mux )
1149             {
1150                 if( p_media->b_raw )
1151                 {
1152                     if( asprintf( &psz_output,
1153                               "std{access=udp,dst=%s:%i,mux=%s}",
1154                               ip, p_rtsp->i_port_raw, p_media->psz_mux ) < 0 )
1155                         return VLC_ENOMEM;
1156                 }
1157                 else
1158                 {
1159                     if( asprintf( &psz_output,
1160                               "rtp{dst=%s,port=%i,mux=%s}",
1161                               ip, i_port_video, p_media->psz_mux ) < 0 )
1162                         return VLC_ENOMEM;
1163                 }
1164             }
1165             else
1166             {
1167                 if( asprintf( &psz_output,
1168                               "rtp{dst=%s,port-video=%i,port-audio=%i}",
1169                               ip, i_port_video, i_port_audio ) < 0 )
1170                     return VLC_ENOMEM;
1171             }
1172
1173             CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1174                          0, 0.0, psz_output );
1175             free( psz_output );
1176             break;
1177         }
1178
1179         case HTTPD_MSG_DESCRIBE:
1180         {
1181             char *psz_sdp =
1182                 SDPGenerate( p_media, cl );
1183
1184             if( psz_sdp != NULL )
1185             {
1186                 answer->i_status = 200;
1187                 httpd_MsgAdd( answer, "Content-type",  "%s",
1188                               "application/sdp" );
1189
1190                 answer->p_body = (uint8_t *)psz_sdp;
1191                 answer->i_body = strlen( psz_sdp );
1192             }
1193             else
1194             {
1195                 answer->i_status = 500;
1196                 answer->p_body = NULL;
1197                 answer->i_body = 0;
1198             }
1199             break;
1200         }
1201
1202         case HTTPD_MSG_PAUSE:
1203             psz_session = httpd_MsgGet( query, "Session" );
1204             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1205
1206             p_rtsp = RtspClientGet( p_media, psz_session );
1207             if( !p_rtsp ) break;
1208
1209             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1210                          0, 0.0, NULL );
1211
1212             answer->i_status = 200;
1213             answer->i_body = 0;
1214             answer->p_body = NULL;
1215             break;
1216
1217         case HTTPD_MSG_TEARDOWN:
1218             /* for now only multicast so easy again */
1219             answer->i_status = 200;
1220             answer->i_body = 0;
1221             answer->p_body = NULL;
1222
1223             psz_session = httpd_MsgGet( query, "Session" );
1224             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1225
1226             p_rtsp = RtspClientGet( p_media, psz_session );
1227             if( !p_rtsp ) break;
1228
1229             CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1230                          0, 0.0, NULL );
1231             RtspClientDel( p_media, p_rtsp );
1232             break;
1233
1234         case HTTPD_MSG_GETPARAMETER:
1235             answer->i_status = 200;
1236             answer->i_body = 0;
1237             answer->p_body = NULL;
1238             break;
1239
1240         default:
1241             return VLC_EGENERIC;
1242     }
1243
1244     httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1245     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1246     psz_cseq = httpd_MsgGet( query, "Cseq" );
1247     psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1248     httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1249     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1250
1251     if( psz_session )
1252     {
1253          if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
1254              httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1255                p_media->p_vod->p_sys->i_session_timeout );
1256          else
1257               httpd_MsgAdd( answer, "Session", "%s", psz_session );
1258     }
1259
1260     return VLC_SUCCESS;
1261 }
1262
1263 static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1264                            httpd_message_t *answer,
1265                            const httpd_message_t *query )
1266 {
1267     media_es_t *p_es = (media_es_t*)p_args;
1268     vod_media_t *p_media = p_es->p_media;
1269     vod_t *p_vod = p_media->p_vod;
1270     rtsp_client_t *p_rtsp = NULL;
1271     const char *psz_transport = NULL;
1272     const char *psz_playnow = NULL; /* support option: x-playNow */
1273     const char *psz_session = NULL;
1274     const char *psz_position = NULL;
1275     const char *psz_cseq = NULL;
1276     int i_cseq = 0;
1277
1278     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1279
1280     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1281
1282     answer->i_proto   = HTTPD_PROTO_RTSP;
1283     answer->i_version = query->i_version;
1284     answer->i_type    = HTTPD_MSG_ANSWER;
1285     answer->i_body    = 0;
1286     answer->p_body      = NULL;
1287
1288     switch( query->i_type )
1289     {
1290         case HTTPD_MSG_SETUP:
1291             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1292             psz_transport = httpd_MsgGet( query, "Transport" );
1293
1294             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1295
1296             if( strstr( psz_transport, "unicast" ) &&
1297                 strstr( psz_transport, "client_port=" ) )
1298             {
1299                 rtsp_client_t *p_rtsp = NULL;
1300                 rtsp_client_es_t *p_rtsp_es = NULL;
1301                 char ip[NI_MAXNUMERICHOST];
1302                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
1303                                    strlen("client_port=") );
1304
1305                 if( httpd_ClientIP( cl, ip, NULL ) == NULL )
1306                 {
1307                     answer->i_status = 500;
1308                     answer->i_body = 0;
1309                     answer->p_body = NULL;
1310                     break;
1311                 }
1312
1313                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1314                         ip, i_port );
1315
1316                 psz_session = httpd_MsgGet( query, "Session" );
1317                 if( !psz_session || !*psz_session )
1318                 {
1319                     char *psz_new;
1320                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1321                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1322                     {
1323                         answer->i_status = 503;
1324                         answer->i_body = 0;
1325                         answer->p_body = NULL;
1326                         break;
1327                     }
1328 #warning Session ID should be securely random (spoofing risk)
1329                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1330                         return VLC_ENOMEM;
1331                     psz_session = psz_new;
1332
1333                     p_rtsp = RtspClientNew( p_media, psz_new );
1334                     if( !p_rtsp )
1335                     {
1336                         answer->i_status = 454;
1337                         answer->i_body = 0;
1338                         answer->p_body = NULL;
1339                         break;
1340                     }
1341                 }
1342                 else
1343                 {
1344                     p_rtsp = RtspClientGet( p_media, psz_session );
1345                     if( !p_rtsp )
1346                     {
1347                         answer->i_status = 454;
1348                         answer->i_body = 0;
1349                         answer->p_body = NULL;
1350                         break;
1351                     }
1352                 }
1353
1354                 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1355                 if( !p_rtsp_es )
1356                 {
1357                     answer->i_status = 500;
1358                     answer->i_body = 0;
1359                     answer->p_body = NULL;
1360                     break;
1361                 }
1362                 p_rtsp_es->i_port = i_port;
1363                 p_rtsp_es->p_media_es = p_es;
1364                 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1365
1366                 answer->i_status = 200;
1367                 answer->i_body = 0;
1368                 answer->p_body = NULL;
1369
1370                 if( p_media->b_raw )
1371                 {
1372                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1373                     {
1374                         httpd_MsgAdd( answer, "Transport",
1375                                      "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1376                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1377                     }
1378                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1379                     {
1380                         httpd_MsgAdd( answer, "Transport",
1381                                      "RAW/RAW/UDP;unicast;client_port=%d-%d",
1382                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1383                     }
1384                 }
1385                 else
1386                 {
1387                     httpd_MsgAdd( answer, "Transport",
1388                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1389                                   p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1390                 }
1391             }
1392             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1393             {
1394                 answer->i_status = 461;
1395                 answer->i_body = 0;
1396                 answer->p_body = NULL;
1397             }
1398
1399             /* Intentional fall-through on x-playNow option in RTSP request */
1400             if( !psz_playnow )
1401                 break;
1402
1403         case HTTPD_MSG_PLAY:
1404             /* This is kind of a kludge. Should we only support Aggregate
1405              * Operations ? */
1406             psz_session = httpd_MsgGet( query, "Session" );
1407             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1408
1409             p_rtsp = RtspClientGet( p_media, psz_session );
1410
1411             psz_position = httpd_MsgGet( query, "Range" );
1412             if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1413             if( psz_position )
1414             {
1415                 int64_t i_time = ParseNPT (psz_position + 4);
1416                 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1417                 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1418                              psz_session, i_time, 0.0, NULL );
1419             }
1420
1421             if( !psz_playnow )
1422             {
1423                 answer->i_status = 200;
1424                 answer->i_body = 0;
1425                 answer->p_body = NULL;
1426             }
1427             break;
1428
1429         case HTTPD_MSG_TEARDOWN:
1430             answer->i_status = 200;
1431             answer->i_body = 0;
1432             answer->p_body = NULL;
1433
1434             psz_session = httpd_MsgGet( query, "Session" );
1435             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1436
1437             p_rtsp = RtspClientGet( p_media, psz_session );
1438             if( !p_rtsp ) break;
1439
1440             for( int i = 0; i < p_rtsp->i_es; i++ )
1441             {
1442                 rtsp_client_es_t *es = p_rtsp->es[i];
1443                 if( es->p_media_es == p_es )
1444                 {
1445                     TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, es );
1446                     break;
1447                 }
1448             }
1449
1450             if( !p_rtsp->i_es )
1451             {
1452                 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1453                              0, 0.0, NULL );
1454                 RtspClientDel( p_media, p_rtsp );
1455             }
1456             break;
1457
1458         case HTTPD_MSG_PAUSE:
1459             /* This is kind of a kludge. Should we only support Aggregate
1460              * Operations ? */
1461             psz_session = httpd_MsgGet( query, "Session" );
1462             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1463
1464             p_rtsp = RtspClientGet( p_media, psz_session );
1465             if( !p_rtsp ) break;
1466
1467             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1468                          0, 0.0, NULL );
1469
1470             answer->i_status = 200;
1471             answer->i_body = 0;
1472             answer->p_body = NULL;
1473             break;
1474
1475         default:
1476             return VLC_EGENERIC;
1477             break;
1478     }
1479
1480     httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1481     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1482     psz_cseq = httpd_MsgGet( query, "Cseq" );
1483     if (psz_cseq)
1484         i_cseq = atoi( psz_cseq );
1485     else
1486         i_cseq = 0;
1487     httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1488     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1489
1490     if( psz_session )
1491         httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1492
1493     return VLC_SUCCESS;
1494 }
1495
1496 /*****************************************************************************
1497  * SDPGenerate: TODO
1498  * FIXME: need to be moved to a common place ?
1499  *****************************************************************************/
1500 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1501 {
1502     char *psz_sdp, ip[NI_MAXNUMERICHOST];
1503     const char *psz_control;
1504     int port;
1505
1506     if( httpd_ServerIP( cl, ip, &port ) == NULL )
1507         return NULL;
1508
1509     bool ipv6 = ( strchr( ip, ':' ) != NULL );
1510
1511     psz_control = ipv6 ? p_media->psz_rtsp_control_v6
1512                        : p_media->psz_rtsp_control_v4;
1513
1514     /* Dummy destination address for RTSP */
1515     struct sockaddr_storage dst;
1516     socklen_t dstlen = ipv6 ? sizeof( struct sockaddr_in6 )
1517                             : sizeof( struct sockaddr_in );
1518     memset (&dst, 0, dstlen);
1519     dst.ss_family = ipv6 ? AF_INET6 : AF_INET;
1520 #ifdef HAVE_SA_LEN
1521     dst.ss_len = dstlen;
1522 #endif
1523
1524     psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_media->p_vod ), "sout-rtp-",
1525                              NULL, 0, (struct sockaddr *)&dst, dstlen );
1526     if( psz_sdp == NULL )
1527         return NULL;
1528
1529     if( p_media->i_length > 0 )
1530     {
1531         lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
1532         sdp_AddAttribute( &psz_sdp, "range","npt=0-%lld.%03u", d.quot,
1533                           (unsigned)d.rem );
1534     }
1535
1536     for( int i = 0; i < p_media->i_es; i++ )
1537     {
1538         media_es_t *p_es = p_media->es[i];
1539         const char *mime_major; /* major MIME type */
1540
1541         switch( p_es->fmt.i_cat )
1542         {
1543             case VIDEO_ES:
1544                 mime_major = "video";
1545                 break;
1546             case AUDIO_ES:
1547                 mime_major = "audio";
1548                 break;
1549             case SPU_ES:
1550                 mime_major = "text";
1551                 break;
1552             default:
1553                 continue;
1554         }
1555
1556         sdp_AddMedia( &psz_sdp, mime_major, "RTP/AVP", 0 /* p_es->i_port */,
1557                       p_es->i_payload_type, false, 0,
1558                       p_es->psz_ptname, p_es->i_clock_rate, p_es->i_channels,
1559                       p_es->psz_fmtp );
1560
1561         sdp_AddAttribute( &psz_sdp, "control", psz_control, ip, port, i );
1562     }
1563
1564     return psz_sdp;
1565 }