git.sesse.net Git - vlc/blob - modules/misc/rtsp.c

   1 /*****************************************************************************
   2  * rtsp.c: rtsp VoD server module
   3  *****************************************************************************
   4  * Copyright (C) 2003-2006 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   8  *          Gildas Bazin <gbazin@videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32
  33 #include <vlc_common.h>
  34 #include <vlc_plugin.h>
  35 #include <vlc_input.h>
  36 #include <vlc_sout.h>
  37 #include <vlc_block.h>
  38
  39 #include "vlc_httpd.h"
  40 #include "vlc_vod.h"
  41 #include "vlc_url.h"
  42 #include <vlc_network.h>
  43 #include <vlc_charset.h>
  44 #include <vlc_strings.h>
  45
  46 #include <errno.h>
  47
  48 #ifndef WIN32
  49 # include <locale.h>
  50 #endif
  51
  52 #ifdef HAVE_XLOCALE_H
  53 # include <xlocale.h>
  54 #endif
  55
  56 /*****************************************************************************
  57  * Module descriptor
  58  *****************************************************************************/
  59 static int  Open ( vlc_object_t * );
  60 static void Close( vlc_object_t * );
  61
  62 #define HOST_TEXT N_( "RTSP host address" )
  63 #define HOST_LONGTEXT N_( \
  64     "This defines the address, port and path the RTSP VOD server will listen " \
  65     "on.\nSyntax is address:port/path. The default is to listen on all "\
  66     "interfaces (address 0.0.0.0), on port 554, with no path.\nTo listen " \
  67     "only on the local interface, use \"localhost\" as address." )
  68
  69 #define THROTLE_TEXT N_( "Maximum number of connections" )
  70 #define THROTLE_LONGTEXT N_( "This limits the maximum number of clients " \
  71     "that can connect to the RTSP VOD. 0 means no limit."  )
  72
  73 #define RAWMUX_TEXT N_( "MUX for RAW RTSP transport" )
  74
  75 #define SESSION_TIMEOUT_TEXT N_( "Sets the timeout option in the RTSP " \
  76     "session string" )
  77 #define SESSION_TIMEOUT_LONGTEXT N_( "Defines what timeout option to add " \
  78     "to the RTSP session ID string. Setting it to a negative number removes " \
  79     "the timeout option entirely. This is needed by some IPTV STBs (such as " \
  80     "those made by HansunTech) which get confused by it. The default is 5." )
  81
  82 vlc_module_begin();
  83     set_shortname( N_("RTSP VoD" ) );
  84     set_description( N_("RTSP VoD server") );
  85     set_category( CAT_SOUT );
  86     set_subcategory( SUBCAT_SOUT_VOD );
  87     set_capability( "vod server", 1 );
  88     set_callbacks( Open, Close );
  89     add_shortcut( "rtsp" );
  90     add_string ( "rtsp-host", NULL, NULL, HOST_TEXT, HOST_LONGTEXT, true );
  91     add_string( "rtsp-raw-mux", "ts", NULL, RAWMUX_TEXT,
  92                 RAWMUX_TEXT, true );
  93     add_integer( "rtsp-throttle-users", 0, NULL, THROTLE_TEXT,
  94                                            THROTLE_LONGTEXT, true );
  95     add_integer( "rtsp-session-timeout", 5, NULL, SESSION_TIMEOUT_TEXT,
  96                  SESSION_TIMEOUT_LONGTEXT, true );
  97 vlc_module_end();
  98
  99 /*****************************************************************************
 100  * Exported prototypes
 101  *****************************************************************************/
 102
 103 typedef struct media_es_t media_es_t;
 104
 105 typedef struct
 106 {
 107     media_es_t *p_media_es;
 108     char *psz_ip;
 109     int i_port;
 110
 111 } rtsp_client_es_t;
 112
 113 typedef struct
 114 {
 115     char *psz_session;
 116     int64_t i_last; /* for timeout */
 117
 118     bool b_playing; /* is it in "play" state */
 119     bool b_paused; /* is it in "pause" state */
 120
 121     int i_es;
 122     rtsp_client_es_t **es;
 123
 124 } rtsp_client_t;
 125
 126 struct media_es_t
 127 {
 128     /* VoD server */
 129     vod_t *p_vod;
 130
 131     /* RTSP server */
 132     httpd_url_t *p_rtsp_url;
 133
 134     vod_media_t *p_media;
 135
 136     es_format_t fmt;
 137     int         i_port;
 138     uint8_t     i_payload_type;
 139     char        *psz_rtpmap;
 140     char        *psz_fmtp;
 141
 142 };
 143
 144 struct vod_media_t
 145 {
 146     int id;
 147
 148     /* VoD server */
 149     vod_t *p_vod;
 150
 151     /* RTSP server */
 152     httpd_url_t  *p_rtsp_url;
 153     char         *psz_rtsp_control_v4;
 154     char         *psz_rtsp_control_v6;
 155     char         *psz_rtsp_path;
 156
 157     int  i_port;
 158     int  i_port_audio;
 159     int  i_port_video;
 160     int  i_ttl;
 161     int  i_payload_type;
 162
 163     int64_t i_sdp_id;
 164     int     i_sdp_version;
 165
 166     bool b_multicast;
 167
 168     vlc_mutex_t lock;
 169
 170     /* ES list */
 171     int        i_es;
 172     media_es_t **es;
 173     char       *psz_mux;
 174     bool  b_raw;
 175
 176     /* RTSP client */
 177     int           i_rtsp;
 178     rtsp_client_t **rtsp;
 179
 180     /* Infos */
 181     char *psz_session_name;
 182     char *psz_session_description;
 183     char *psz_session_url;
 184     char *psz_session_email;
 185     mtime_t i_length;
 186 };
 187
 188 struct vod_sys_t
 189 {
 190     /* RTSP server */
 191     httpd_host_t *p_rtsp_host;
 192     char *psz_path;
 193     int i_port;
 194     int i_throttle_users;
 195     int i_connections;
 196
 197     char *psz_raw_mux;
 198
 199     int i_session_timeout;
 200
 201     /* List of media */
 202     vlc_mutex_t lock_media;
 203     int i_media_id;
 204     int i_media;
 205     vod_media_t **media;
 206
 207     /* */
 208     block_fifo_t *p_fifo_cmd;
 209 };
 210
 211 /* rtsp delayed command (to avoid deadlock between vlm/httpd) */
 212 typedef enum
 213 {
 214     RTSP_CMD_TYPE_NONE,  /* Exit requested */
 215
 216     RTSP_CMD_TYPE_PLAY,
 217     RTSP_CMD_TYPE_PAUSE,
 218     RTSP_CMD_TYPE_STOP,
 219     RTSP_CMD_TYPE_SEEK,
 220     RTSP_CMD_TYPE_REWIND,
 221     RTSP_CMD_TYPE_FORWARD,
 222 } rtsp_cmd_type_t;
 223
 224 static vod_media_t *MediaNew( vod_t *, const char *, input_item_t * );
 225 static void         MediaDel( vod_t *, vod_media_t * );
 226 static int          MediaAddES( vod_t *, vod_media_t *, es_format_t * );
 227 static void         MediaDelES( vod_t *, vod_media_t *, es_format_t * );
 228
 229 static void CommandThread( vlc_object_t *p_this );
 230 static void CommandPush( vod_t *, rtsp_cmd_type_t, vod_media_t *, const char *psz_session,
 231                          double f_arg, const char *psz_arg );
 232
 233 static rtsp_client_t *RtspClientNew( vod_media_t *, char * );
 234 static rtsp_client_t *RtspClientGet( vod_media_t *, const char * );
 235 static void           RtspClientDel( vod_media_t *, rtsp_client_t * );
 236
 237 static int RtspCallback( httpd_callback_sys_t *, httpd_client_t *,
 238                          httpd_message_t *, const httpd_message_t * );
 239 static int RtspCallbackES( httpd_callback_sys_t *, httpd_client_t *,
 240                            httpd_message_t *, const httpd_message_t * );
 241
 242 static char *SDPGenerate( const vod_media_t *, httpd_client_t *cl );
 243
 244 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
 245 {
 246     static const char hex[16] = "0123456789abcdef";
 247     int i;
 248
 249     for( i = 0; i < i_data; i++ )
 250     {
 251         s[2*i+0] = hex[(p_data[i]>>4)&0xf];
 252         s[2*i+1] = hex[(p_data[i]   )&0xf];
 253     }
 254     s[2*i_data] = '\0';
 255 }
 256
 257 /*****************************************************************************
 258  * Open: Starts the RTSP server module
 259  *****************************************************************************/
 260 static int Open( vlc_object_t *p_this )
 261 {
 262     vod_t *p_vod = (vod_t *)p_this;
 263     vod_sys_t *p_sys = 0;
 264     char *psz_url = 0;
 265     vlc_url_t url;
 266
 267     psz_url = config_GetPsz( p_vod, "rtsp-host" );
 268     vlc_UrlParse( &url, psz_url, 0 );
 269     free( psz_url );
 270
 271     if( url.i_port <= 0 ) url.i_port = 554;
 272
 273     p_vod->p_sys = p_sys = malloc( sizeof( vod_sys_t ) );
 274     if( !p_sys ) goto error;
 275     p_sys->p_rtsp_host = 0;
 276
 277     p_sys->i_session_timeout = var_CreateGetInteger( p_this, "rtsp-session-timeout" );
 278
 279     p_sys->i_throttle_users = var_CreateGetInteger( p_this, "rtsp-throttle-users" );
 280     msg_Dbg( p_this, "allowing up to %d connections", p_sys->i_throttle_users );
 281     p_sys->i_connections = 0;
 282
 283     p_sys->psz_raw_mux = var_CreateGetString( p_this, "rtsp-raw-mux" );
 284
 285     p_sys->p_rtsp_host =
 286         httpd_HostNew( VLC_OBJECT(p_vod), url.psz_host, url.i_port );
 287     if( !p_sys->p_rtsp_host )
 288     {
 289         msg_Err( p_vod, "cannot create RTSP server (%s:%i)",
 290                  url.psz_host, url.i_port );
 291         goto error;
 292     }
 293
 294     p_sys->psz_path = strdup( url.psz_path ? url.psz_path : "/" );
 295     p_sys->i_port = url.i_port;
 296
 297     vlc_UrlClean( &url );
 298
 299     vlc_mutex_init( &p_sys->lock_media );
 300
 301     TAB_INIT( p_sys->i_media, p_sys->media );
 302     p_sys->i_media_id = 0;
 303
 304     p_vod->pf_media_new = MediaNew;
 305     p_vod->pf_media_del = MediaDel;
 306     p_vod->pf_media_add_es = MediaAddES;
 307     p_vod->pf_media_del_es = MediaDelES;
 308
 309     p_sys->p_fifo_cmd = block_FifoNew();
 310     if( vlc_thread_create( p_vod, "rtsp vod thread", CommandThread,
 311                            VLC_THREAD_PRIORITY_LOW, false ) )
 312     {
 313         msg_Err( p_vod, "cannot spawn rtsp vod thread" );
 314         block_FifoRelease( p_sys->p_fifo_cmd );
 315         free( p_sys->psz_path );
 316         goto error;
 317     }
 318
 319     return VLC_SUCCESS;
 320
 321 error:
 322     if( p_sys )
 323     {
 324         if( p_sys->p_rtsp_host ) httpd_HostDelete( p_sys->p_rtsp_host );
 325         free( p_sys->psz_raw_mux );
 326         free( p_sys );
 327     }
 328     vlc_UrlClean( &url );
 329
 330     return VLC_EGENERIC;
 331 }
 332
 333 /*****************************************************************************
 334  * Close:
 335  *****************************************************************************/
 336 static void Close( vlc_object_t * p_this )
 337 {
 338     vod_t *p_vod = (vod_t *)p_this;
 339     vod_sys_t *p_sys = p_vod->p_sys;
 340
 341     /* Stop command thread */
 342     vlc_object_kill( p_vod );
 343     CommandPush( p_vod, RTSP_CMD_TYPE_NONE, NULL, NULL, 0.0, NULL );
 344     vlc_thread_join( p_vod );
 345
 346     block_FifoRelease( p_sys->p_fifo_cmd );
 347
 348     httpd_HostDelete( p_sys->p_rtsp_host );
 349     var_Destroy( p_this, "rtsp-session-timeout" );
 350     var_Destroy( p_this, "rtsp-throttle-users" );
 351     var_Destroy( p_this, "rtsp-raw-mux" );
 352
 353     /* Check VLM is not buggy */
 354     if( p_sys->i_media > 0 )
 355         msg_Err( p_vod, "rtsp vod leaking %d medias", p_sys->i_media );
 356     TAB_CLEAN( p_sys->i_media, p_sys->media );
 357
 358     vlc_mutex_destroy( &p_sys->lock_media );
 359
 360     free( p_sys->psz_path );
 361     free( p_sys->psz_raw_mux );
 362     free( p_sys );
 363 }
 364
 365 /*****************************************************************************
 366  * Media handling
 367  *****************************************************************************/
 368 static vod_media_t *MediaNew( vod_t *p_vod, const char *psz_name,
 369                               input_item_t *p_item )
 370 {
 371     vod_sys_t *p_sys = p_vod->p_sys;
 372     vod_media_t *p_media = malloc( sizeof(vod_media_t) );
 373     int i;
 374
 375     if( !p_media )
 376         return NULL;
 377
 378     memset( p_media, 0, sizeof(vod_media_t) );
 379     p_media->id = p_sys->i_media_id++;
 380     TAB_INIT( p_media->i_es, p_media->es );
 381     p_media->psz_mux = 0;
 382     TAB_INIT( p_media->i_rtsp, p_media->rtsp );
 383     p_media->b_raw = false;
 384
 385     if( asprintf( &p_media->psz_rtsp_path, "%s%s",
 386                   p_sys->psz_path, psz_name ) <0 )
 387         return NULL;
 388     p_media->p_rtsp_url =
 389         httpd_UrlNewUnique( p_sys->p_rtsp_host, p_media->psz_rtsp_path, NULL,
 390                             NULL, NULL );
 391
 392     if( !p_media->p_rtsp_url )
 393     {
 394         msg_Err( p_vod, "cannot create RTSP url (%s)", p_media->psz_rtsp_path);
 395         free( p_media->psz_rtsp_path );
 396         free( p_media );
 397         return NULL;
 398     }
 399
 400     msg_Dbg( p_vod, "created RTSP url: %s", p_media->psz_rtsp_path );
 401
 402     if( asprintf( &p_media->psz_rtsp_control_v4,
 403                "a=control:rtsp://%%s:%d%s/trackID=%%d\r\n",
 404                p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 405         return NULL;
 406     if( asprintf( &p_media->psz_rtsp_control_v6,
 407                "a=control:rtsp://[%%s]:%d%s/trackID=%%d\r\n",
 408               p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 409         return NULL;
 410
 411     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_SETUP,
 412                     RtspCallback, (void*)p_media );
 413     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_DESCRIBE,
 414                     RtspCallback, (void*)p_media );
 415     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PLAY,
 416                     RtspCallback, (void*)p_media );
 417     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PAUSE,
 418                     RtspCallback, (void*)p_media );
 419     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_GETPARAMETER,
 420                     RtspCallback, (void*)p_media );
 421     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 422                     RtspCallback, (void*)p_media );
 423
 424     p_media->p_vod = p_vod;
 425
 426     vlc_mutex_lock( &p_sys->lock_media );
 427     TAB_APPEND( p_sys->i_media, p_sys->media, p_media );
 428     vlc_mutex_unlock( &p_sys->lock_media );
 429
 430     vlc_mutex_init( &p_media->lock );
 431     p_media->psz_session_name = strdup("");
 432     p_media->psz_session_description = strdup("");
 433     p_media->psz_session_url = strdup("");
 434     p_media->psz_session_email = strdup("");
 435
 436     p_media->i_port_audio = 1234;
 437     p_media->i_port_video = 1236;
 438     p_media->i_port       = 1238;
 439     p_media->i_payload_type = 96;
 440
 441     p_media->i_sdp_id = mdate();
 442     p_media->i_sdp_version = 1;
 443     p_media->i_length = input_item_GetDuration( p_item );
 444
 445     vlc_mutex_lock( &p_item->lock );
 446     msg_Dbg( p_vod, "media has %i declared ES", p_item->i_es );
 447     for( i = 0; i < p_item->i_es; i++ )
 448     {
 449         MediaAddES( p_vod, p_media, p_item->es[i] );
 450     }
 451     vlc_mutex_unlock( &p_item->lock );
 452
 453     return p_media;
 454 }
 455
 456 static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
 457 {
 458     vod_sys_t *p_sys = p_vod->p_sys;
 459
 460     msg_Dbg( p_vod, "deleting media: %s", p_media->psz_rtsp_path );
 461
 462     vlc_mutex_lock( &p_sys->lock_media );
 463     TAB_REMOVE( p_sys->i_media, p_sys->media, p_media );
 464     vlc_mutex_unlock( &p_sys->lock_media );
 465
 466     while( p_media->i_rtsp > 0 )
 467         RtspClientDel( p_media, p_media->rtsp[0] );
 468     TAB_CLEAN( p_media->i_rtsp, p_media->rtsp );
 469
 470     httpd_UrlDelete( p_media->p_rtsp_url );
 471     free( p_media->psz_rtsp_path );
 472     free( p_media->psz_rtsp_control_v6 );
 473     free( p_media->psz_rtsp_control_v4 );
 474
 475     while( p_media->i_es )
 476         MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );
 477     TAB_CLEAN( p_media->i_es, p_media->es );
 478
 479     vlc_mutex_destroy( &p_media->lock );
 480
 481     free( p_media->psz_session_name );
 482     free( p_media->psz_session_description );
 483     free( p_media->psz_session_url );
 484     free( p_media->psz_session_email );
 485     free( p_media->psz_mux );
 486     free( p_media );
 487 }
 488
 489 static int MediaAddES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt )
 490 {
 491     media_es_t *p_es = malloc( sizeof(media_es_t) );
 492     char *psz_urlc;
 493
 494     if( !p_es ) return VLC_ENOMEM;
 495     memset( p_es, 0, sizeof(media_es_t) );
 496
 497     free( p_media->psz_mux );
 498     p_media->psz_mux = NULL;
 499
 500     /* TODO: update SDP, etc... */
 501     if( asprintf( &psz_urlc, "%s/trackID=%d",
 502               p_media->psz_rtsp_path, p_media->i_es ) < 0 )
 503     {
 504         free( p_es );
 505         return VLC_ENOMEM;
 506     }
 507     msg_Dbg( p_vod, "  - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
 508
 509     switch( p_fmt->i_codec )
 510     {
 511         case VLC_FOURCC( 's', '1', '6', 'b' ):
 512             if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
 513             {
 514                 p_es->i_payload_type = 11;
 515             }
 516             else if( p_fmt->audio.i_channels == 2 &&
 517                      p_fmt->audio.i_rate == 44100 )
 518             {
 519                 p_es->i_payload_type = 10;
 520             }
 521             else
 522             {
 523                 p_es->i_payload_type = p_media->i_payload_type++;
 524             }
 525             p_es->psz_rtpmap = malloc( strlen( "L16/*/*" ) + 20+1 );
 526             sprintf( p_es->psz_rtpmap, "L16/%d/%d", p_fmt->audio.i_rate,
 527                     p_fmt->audio.i_channels );
 528             break;
 529         case VLC_FOURCC( 'u', '8', ' ', ' ' ):
 530             p_es->i_payload_type = p_media->i_payload_type++;
 531             p_es->psz_rtpmap = malloc( strlen( "L8/*/*" ) + 20+1 );
 532             sprintf( p_es->psz_rtpmap, "L8/%d/%d", p_fmt->audio.i_rate,
 533                     p_fmt->audio.i_channels );
 534             break;
 535         case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
 536         case VLC_FOURCC( 'm', 'p', '3', ' ' ):
 537             p_es->i_payload_type = 14;
 538             p_es->psz_rtpmap = strdup( "MPA/90000" );
 539             break;
 540         case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
 541             p_es->i_payload_type = 32;
 542             p_es->psz_rtpmap = strdup( "MPV/90000" );
 543             break;
 544         case VLC_FOURCC( 'a', '5', '2', ' ' ):
 545             p_es->i_payload_type = p_media->i_payload_type++;
 546             asprintf( &p_es->psz_rtpmap, "ac3/%d", p_fmt->audio.i_rate );
 547             break;
 548         case VLC_FOURCC( 'H', '2', '6', '3' ):
 549             p_es->i_payload_type = p_media->i_payload_type++;
 550             p_es->psz_rtpmap = strdup( "H263-1998/90000" );
 551             break;
 552         case VLC_FOURCC( 'h', '2', '6', '4' ):
 553             p_es->i_payload_type = p_media->i_payload_type++;
 554             p_es->psz_rtpmap = strdup( "H264/90000" );
 555             p_es->psz_fmtp = NULL;
 556             /* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
 557             if( p_fmt->i_extra > 0 )
 558             {
 559                 uint8_t *p_buffer = p_fmt->p_extra;
 560                 int     i_buffer = p_fmt->i_extra;
 561                 char    *p_64_sps = NULL;
 562                 char    *p_64_pps = NULL;
 563                 char    hexa[6+1];
 564
 565                 while( i_buffer > 4 &&
 566                        p_buffer[0] == 0 && p_buffer[1] == 0 &&
 567                        p_buffer[2] == 0 && p_buffer[3] == 1 )
 568                 {
 569                     const int i_nal_type = p_buffer[4]&0x1f;
 570                     int i_offset;
 571                     int i_size      = 0;
 572
 573                     i_size = i_buffer;
 574                     for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
 575                     {
 576                         if( p_buffer[i_offset] == 0 && p_buffer[i_offset+1] == 0 && p_buffer[i_offset+2] == 0 && p_buffer[i_offset+3] == 1 )
 577                         {
 578                             /* we found another startcode */
 579                             i_size = i_offset;
 580                             break;
 581                         }
 582                     }
 583                     if( i_nal_type == 7 )
 584                     {
 585                         p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 586                         sprintf_hexa( hexa, &p_buffer[5], 3 );
 587                     }
 588                     else if( i_nal_type == 8 )
 589                     {
 590                         p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 591                     }
 592                     i_buffer -= i_size;
 593                     p_buffer += i_size;
 594                 }
 595                 /* */
 596                 if( p_64_sps && p_64_pps )
 597                 {
 598                     if( asprintf( &p_es->psz_fmtp,
 599                                   "packetization-mode=1;profile-level-id=%s;"
 600                                   "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
 601                                   p_64_pps ) < 0 )
 602                     {
 603                         free( p_64_sps );
 604                         free( p_64_pps );
 605                         free( psz_urlc );
 606                         free( p_es );
 607                         return VLC_ENOMEM;
 608                     }
 609                 }
 610                 free( p_64_sps );
 611                 free( p_64_pps );
 612             }
 613             if( !p_es->psz_fmtp )
 614                 p_es->psz_fmtp = strdup( "packetization-mode=1" );
 615             break;
 616         case VLC_FOURCC( 'm', 'p', '4', 'v' ):
 617             p_es->i_payload_type = p_media->i_payload_type++;
 618             p_es->psz_rtpmap = strdup( "MP4V-ES/90000" );
 619             if( p_fmt->i_extra > 0 )
 620             {
 621                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 622                 p_es->psz_fmtp = malloc( 100 + 2 * p_fmt->i_extra );
 623                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 624                 sprintf( p_es->psz_fmtp,
 625                         "profile-level-id=3; config=%s;", p_hexa );
 626                 free( p_hexa );
 627             }
 628             break;
 629         case VLC_FOURCC( 'm', 'p', '4', 'a' ):
 630             p_es->i_payload_type = p_media->i_payload_type++;
 631             p_es->psz_rtpmap = malloc( strlen( "mpeg4-generic/" ) + 12 );
 632             sprintf( p_es->psz_rtpmap, "mpeg4-generic/%d", p_fmt->audio.i_rate );
 633             if( p_fmt->i_extra > 0 )
 634             {
 635                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 636                 p_es->psz_fmtp = malloc( 200 + 2 * p_fmt->i_extra );
 637                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 638                 sprintf( 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 );
 642                 free( p_hexa );
 643             }
 644             break;
 645         case VLC_FOURCC( 'm', 'p', '2', 't' ):
 646             p_media->psz_mux = strdup("ts");
 647             p_es->i_payload_type = 33;
 648             p_es->psz_rtpmap = strdup( "MP2T/90000" );
 649             break;
 650         case VLC_FOURCC( 'm', 'p', '2', 'p' ):
 651             p_media->psz_mux = strdup("ps");
 652             p_es->i_payload_type = p_media->i_payload_type++;
 653             p_es->psz_rtpmap = strdup( "MP2P/90000" );
 654             break;
 655         case VLC_FOURCC( 's', 'a', 'm', 'r' ):
 656             p_es->i_payload_type = p_media->i_payload_type++;
 657             p_es->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
 658                                     "AMR/8000/2" : "AMR/8000" );
 659             p_es->psz_fmtp = strdup( "octet-align=1" );
 660             break;
 661         case VLC_FOURCC( 's', 'a', 'w', 'b' ):
 662             p_es->i_payload_type = p_media->i_payload_type++;
 663             p_es->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
 664                                     "AMR-WB/16000/2" : "AMR-WB/16000" );
 665             p_es->psz_fmtp = strdup( "octet-align=1" );
 666             break;
 667
 668         default:
 669             msg_Err( p_vod, "cannot add this stream (unsupported "
 670                     "codec: %4.4s)", (char*)&p_fmt->i_codec );
 671             free( psz_urlc );
 672             free( p_es );
 673             return VLC_EGENERIC;
 674     }
 675
 676     p_es->p_rtsp_url =
 677         httpd_UrlNewUnique( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL,
 678                             NULL );
 679
 680     if( !p_es->p_rtsp_url )
 681     {
 682         msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
 683         free( psz_urlc );
 684         free( p_es );
 685         return VLC_EGENERIC;
 686     }
 687     free( psz_urlc );
 688
 689     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
 690                     RtspCallbackES, (void*)p_es );
 691     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 692                     RtspCallbackES, (void*)p_es );
 693     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
 694                     RtspCallbackES, (void*)p_es );
 695     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
 696                     RtspCallbackES, (void*)p_es );
 697
 698     es_format_Copy( &p_es->fmt, p_fmt );
 699     p_es->p_vod = p_vod;
 700     p_es->p_media = p_media;
 701
 702 #if 0
 703     /* Choose the port */
 704     if( p_fmt->i_cat == AUDIO_ES && p_media->i_port_audio > 0 )
 705     {
 706         p_es->i_port = p_media->i_port_audio;
 707         p_media->i_port_audio = 0;
 708     }
 709     else if( p_fmt->i_cat == VIDEO_ES && p_media->i_port_video > 0 )
 710     {
 711         p_es->i_port = p_media->i_port_video;
 712         p_media->i_port_video = 0;
 713     }
 714     while( !p_es->i_port )
 715     {
 716         if( p_media->i_port != p_media->i_port_audio &&
 717             p_media->i_port != p_media->i_port_video )
 718         {
 719             p_es->i_port = p_media->i_port;
 720             p_media->i_port += 2;
 721             break;
 722         }
 723         p_media->i_port += 2;
 724     }
 725 #else
 726
 727     p_es->i_port = 0;
 728 #endif
 729
 730     vlc_mutex_lock( &p_media->lock );
 731     TAB_APPEND( p_media->i_es, p_media->es, p_es );
 732     vlc_mutex_unlock( &p_media->lock );
 733
 734     p_media->i_sdp_version++;
 735
 736     return VLC_SUCCESS;
 737 }
 738
 739 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
 740 {
 741     media_es_t *p_es = NULL;
 742     int i;
 743
 744     /* Find the ES */
 745     for( i = 0; i < p_media->i_es; i++ )
 746     {
 747         if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
 748             p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
 749             p_media->es[i]->fmt.i_id == p_fmt->i_id )
 750         {
 751             p_es = p_media->es[i];
 752         }
 753     }
 754     if( !p_es ) return;
 755
 756     msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );
 757
 758     vlc_mutex_lock( &p_media->lock );
 759     TAB_REMOVE( p_media->i_es, p_media->es, p_es );
 760     vlc_mutex_unlock( &p_media->lock );
 761
 762     free( p_es->psz_rtpmap );
 763     free( p_es->psz_fmtp );
 764     p_media->i_sdp_version++;
 765
 766     if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
 767     es_format_Clean( &p_es->fmt );
 768     free( p_es );
 769 }
 770
 771 /* */
 772 typedef struct
 773 {
 774     int i_type;
 775     int i_media_id;
 776     //vod_media_t *p_media;
 777     char *psz_session;
 778     char *psz_arg;
 779     double f_arg;
 780 } rtsp_cmd_t;
 781
 782 static void CommandPush( vod_t *p_vod, rtsp_cmd_type_t i_type, vod_media_t *p_media, const char *psz_session,
 783                          double f_arg, const char *psz_arg )
 784 {
 785     rtsp_cmd_t cmd;
 786     block_t *p_cmd;
 787
 788     memset( &cmd, 0, sizeof(cmd) );
 789     cmd.i_type = i_type;
 790     if( p_media )
 791         cmd.i_media_id = p_media->id;
 792     if( psz_session )
 793         cmd.psz_session = strdup(psz_session);
 794     cmd.f_arg = f_arg;
 795     if( psz_arg )
 796         cmd.psz_arg = strdup(psz_arg);
 797
 798     p_cmd = block_New( p_vod, sizeof(rtsp_cmd_t) );
 799     memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
 800
 801     block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
 802 }
 803
 804 static void CommandThread( vlc_object_t *p_this )
 805 {
 806     vod_t *p_vod = (vod_t*)p_this;
 807     vod_sys_t *p_sys = p_vod->p_sys;
 808
 809     while( vlc_object_alive (p_vod) )
 810     {
 811         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 812         rtsp_cmd_t cmd;
 813         vod_media_t *p_media = NULL;
 814         int i;
 815
 816         if( !p_block_cmd )
 817             break;
 818
 819         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 820         block_Release( p_block_cmd );
 821
 822         if( cmd.i_type == RTSP_CMD_TYPE_NONE )
 823             break;
 824
 825         /* */
 826         vlc_mutex_lock( &p_sys->lock_media );
 827         for( i = 0; i < p_sys->i_media; i++ )
 828         {
 829             if( p_sys->media[i]->id == cmd.i_media_id )
 830                 break;
 831         }
 832         if( i >= p_sys->i_media )
 833             goto next;
 834         p_media = p_sys->media[i];
 835
 836         switch( cmd.i_type )
 837         {
 838         case RTSP_CMD_TYPE_PLAY:
 839             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 840                               VOD_MEDIA_PLAY, cmd.psz_arg );
 841             break;
 842         case RTSP_CMD_TYPE_PAUSE:
 843             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 844                               VOD_MEDIA_PAUSE );
 845             break;
 846
 847         case RTSP_CMD_TYPE_STOP:
 848             vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
 849             break;
 850
 851         case RTSP_CMD_TYPE_SEEK:
 852             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 853                               VOD_MEDIA_SEEK, cmd.f_arg );
 854             break;
 855
 856         case RTSP_CMD_TYPE_REWIND:
 857             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 858                               VOD_MEDIA_REWIND, cmd.f_arg );
 859             break;
 860
 861         case RTSP_CMD_TYPE_FORWARD:
 862             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 863                               VOD_MEDIA_FORWARD, cmd.f_arg );
 864             break;
 865
 866         default:
 867             break;
 868         }
 869
 870     next:
 871         vlc_mutex_unlock( &p_sys->lock_media );
 872         free( cmd.psz_session );
 873         free( cmd.psz_arg );
 874     }
 875 }
 876
 877 /****************************************************************************
 878  * RTSP server implementation
 879  ****************************************************************************/
 880 static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
 881 {
 882     rtsp_client_t *p_rtsp = malloc( sizeof(rtsp_client_t) );
 883
 884     if( !p_rtsp ) return NULL;
 885     memset( p_rtsp, 0, sizeof(rtsp_client_t) );
 886     p_rtsp->es = 0;
 887
 888     p_rtsp->psz_session = psz_session;
 889     TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 890
 891     p_media->p_vod->p_sys->i_connections++;
 892     msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
 893              psz_session, p_media->p_vod->p_sys->i_throttle_users );
 894
 895     return p_rtsp;
 896 }
 897
 898 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
 899 {
 900     int i;
 901
 902     for( i = 0; psz_session && i < p_media->i_rtsp; i++ )
 903     {
 904         if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
 905             return p_media->rtsp[i];
 906     }
 907
 908     return NULL;
 909 }
 910
 911 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
 912 {
 913     p_media->p_vod->p_sys->i_connections--;
 914     msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
 915              p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
 916
 917     while( p_rtsp->i_es-- )
 918     {
 919         free( p_rtsp->es[p_rtsp->i_es]->psz_ip );
 920         free( p_rtsp->es[p_rtsp->i_es] );
 921         if( !p_rtsp->i_es ) free( p_rtsp->es );
 922     }
 923
 924     TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 925
 926     free( p_rtsp->psz_session );
 927     free( p_rtsp );
 928 }
 929
 930
 931 static float ParseNPT (const char *str)
 932 {
 933      locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
 934      locale_t oldloc = uselocale (loc);
 935      unsigned hour, min;
 936      float sec;
 937
 938      if (sscanf (str, "%u:%u:%f", &hour, &min, &sec) == 3)
 939          sec += ((hour * 60) + min) * 60;
 940      else
 941      if (sscanf (str, "%f", &sec) != 1)
 942          sec = 0.;
 943
 944      if (loc != (locale_t)0)
 945      {
 946          uselocale (oldloc);
 947          freelocale (loc);
 948      }
 949      return sec;
 950 }
 951
 952
 953 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
 954                          httpd_message_t *answer, const httpd_message_t *query )
 955 {
 956     vod_media_t *p_media = (vod_media_t*)p_args;
 957     vod_t *p_vod = p_media->p_vod;
 958     const char *psz_transport = NULL;
 959     const char *psz_playnow = NULL; /* support option: x-playNow */
 960     const char *psz_session = NULL;
 961     const char *psz_cseq = NULL;
 962     rtsp_client_t *p_rtsp;
 963     int i_port = 0;
 964     int i_cseq = 0;
 965
 966     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
 967
 968     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
 969
 970     answer->i_proto   = HTTPD_PROTO_RTSP;
 971     answer->i_version = query->i_version;
 972     answer->i_type    = HTTPD_MSG_ANSWER;
 973     answer->i_body    = 0;
 974     answer->p_body    = NULL;
 975
 976     switch( query->i_type )
 977     {
 978         case HTTPD_MSG_SETUP:
 979         {
 980             psz_playnow = httpd_MsgGet( query, "x-playNow" );
 981             psz_transport = httpd_MsgGet( query, "Transport" );
 982             if( psz_transport == NULL )
 983             {
 984                 answer->i_status = 400;
 985                 break;
 986             }
 987             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
 988
 989             if( strstr( psz_transport, "unicast" ) &&
 990                 strstr( psz_transport, "client_port=" ) )
 991             {
 992                 rtsp_client_t *p_rtsp = NULL;
 993                 char ip[NI_MAXNUMERICHOST];
 994                 i_port = atoi( strstr( psz_transport, "client_port=" ) +
 995                                 strlen("client_port=") );
 996
 997                 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
 998                     strstr( psz_transport, "RAW/RAW/UDP" ) )
 999                 {
1000                     free( p_media->psz_mux );
1001                     p_media->psz_mux = NULL;
1002                     p_media->psz_mux = strdup( p_vod->p_sys->psz_raw_mux );
1003                     p_media->b_raw = true;
1004                 }
1005
1006                 if( httpd_ClientIP( cl, ip ) == NULL )
1007                 {
1008                     answer->i_status = 500;
1009                     answer->i_body = 0;
1010                     answer->p_body = NULL;
1011                     break;
1012                 }
1013
1014                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1015                          ip, i_port );
1016
1017                 psz_session = httpd_MsgGet( query, "Session" );
1018                 if( !psz_session || !*psz_session )
1019                 {
1020                     char *psz_new;
1021                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1022                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1023                     {
1024                         answer->i_status = 503;
1025                         answer->i_body = 0;
1026                         answer->p_body = NULL;
1027                         break;
1028                     }
1029                     if( asprintf( &psz_new, "%d", rand() ) < 0 )
1030                         return VLC_ENOMEM;
1031                     psz_session = psz_new;
1032
1033                     p_rtsp = RtspClientNew( p_media, psz_new );
1034                     if( !p_rtsp )
1035                     {
1036                         answer->i_status = 454;
1037                         answer->i_body = 0;
1038                         answer->p_body = NULL;
1039                         break;
1040                     }
1041                 }
1042                 else
1043                 {
1044                     p_rtsp = RtspClientGet( p_media, psz_session );
1045                     if( !p_rtsp )
1046                     {
1047                         answer->i_status = 454;
1048                         answer->i_body = 0;
1049                         answer->p_body = NULL;
1050                         break;
1051                     }
1052                 }
1053
1054                 answer->i_status = 200;
1055                 answer->i_body = 0;
1056                 answer->p_body = NULL;
1057
1058                 if( p_media->b_raw )
1059                 {
1060                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1061                     {
1062                         httpd_MsgAdd( answer, "Transport",
1063                                       "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1064                                       i_port, i_port + 1 );
1065                     }
1066                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1067                     {
1068                         httpd_MsgAdd( answer, "Transport",
1069                                       "RAW/RAW/UDP;unicast;client_port=%d-%d",
1070                                       i_port, i_port + 1 );
1071                     }
1072                 }
1073                 else
1074                     httpd_MsgAdd( answer, "Transport",
1075                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1076                                   i_port, i_port + 1 );
1077             }
1078             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1079             {
1080                 answer->i_status = 461;
1081                 answer->i_body = 0;
1082                 answer->p_body = NULL;
1083             }
1084
1085             /* Intentional fall-through on x-playNow option in RTSP request */
1086             if( !psz_playnow )
1087                 break;
1088         }
1089
1090         case HTTPD_MSG_PLAY:
1091         {
1092             char *psz_output, ip[NI_MAXNUMERICHOST];
1093             int i, i_port_audio = 0, i_port_video = 0;
1094
1095             /* for now only multicast so easy */
1096             if( !psz_playnow )
1097             {
1098                 answer->i_status = 200;
1099                 answer->i_body = 0;
1100                 answer->p_body = NULL;
1101             }
1102
1103             if( !psz_session )
1104                 psz_session = httpd_MsgGet( query, "Session" );
1105             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1106
1107             p_rtsp = RtspClientGet( p_media, psz_session );
1108             if( !p_rtsp )
1109             {
1110                 answer->i_status = 500;
1111                 answer->i_body = 0;
1112                 answer->p_body = NULL;
1113                 break;
1114             }
1115
1116             if( p_rtsp->b_playing )
1117             {
1118                 const char *psz_position = httpd_MsgGet( query, "Range" );
1119                 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1120                 if( psz_position )
1121                     psz_position = strstr( psz_position, "npt=" );
1122                 if( psz_position && !psz_scale )
1123                 {
1124                     double f_pos = ParseNPT (psz_position + 4);
1125                     msg_Dbg( p_vod, "seeking request: %s", psz_position );
1126                     f_pos /= ((double)(p_media->i_length))/1000 /1000 / 100;
1127                     CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1128                                  psz_session, f_pos, NULL );
1129                     break;
1130                 }
1131                 if( psz_scale )
1132                 {
1133                     double f_scale = 0.0;
1134                     char *end;
1135
1136                     f_scale = us_strtod( psz_scale, &end );
1137                     if( end > psz_scale )
1138                     {
1139                         f_scale = (f_scale * 30.0);
1140                         if( psz_scale[0] == '-' ) /* rewind */
1141                         {
1142                             msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1143                             CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
1144                                          psz_session, f_scale, NULL );
1145                         }
1146                         else if(psz_scale[0] != '1' ) /* fast-forward */
1147                         {
1148                             msg_Dbg( p_vod, "fastforward request: %s",
1149                                      psz_scale );
1150                             CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
1151                                          psz_session, f_scale, NULL );
1152                         }
1153
1154                         if( p_rtsp->b_paused == true )
1155                         {
1156                             p_rtsp->b_paused = false;
1157                             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1158                                          psz_session, 0, NULL );
1159                         }
1160                     }
1161                     break;
1162                 }
1163             }
1164
1165             if( p_rtsp->b_playing && p_rtsp->b_paused )
1166             {
1167                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1168                              psz_session, 0, NULL );
1169                 p_rtsp->b_paused = false;
1170                 break;
1171             }
1172             else if( p_rtsp->b_playing ) break;
1173
1174             if( httpd_ClientIP( cl, ip ) == NULL ) break;
1175
1176             p_rtsp->b_playing = true;
1177
1178             /* FIXME for != 1 video and 1 audio */
1179             for( i = 0; i < p_rtsp->i_es; i++ )
1180             {
1181                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1182                     i_port_audio = p_rtsp->es[i]->i_port;
1183                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1184                     i_port_video = p_rtsp->es[i]->i_port;
1185             }
1186
1187             if( p_media->psz_mux )
1188             {
1189                 if( p_media->b_raw )
1190                 {
1191                     if( asprintf( &psz_output,
1192                               "std{access=udp,dst=%s:%i,mux=%s}",
1193                               ip, i_port, p_media->psz_mux ) < 0 )
1194                         return VLC_ENOMEM;
1195                 }
1196                 else
1197                 {
1198                     if( asprintf( &psz_output,
1199                               "rtp{dst=%s,port=%i,mux=%s}",
1200                               ip, i_port_video, p_media->psz_mux ) < 0 )
1201                         return VLC_ENOMEM;
1202                 }
1203             }
1204             else
1205             {
1206                 if( asprintf( &psz_output,
1207                               "rtp{dst=%s,port-video=%i,port-audio=%i}",
1208                               ip, i_port_video, i_port_audio ) < 0 )
1209                     return VLC_ENOMEM;
1210             }
1211
1212             CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1213                          0, psz_output );
1214             free( psz_output );
1215             break;
1216         }
1217
1218         case HTTPD_MSG_DESCRIBE:
1219         {
1220             char *psz_sdp =
1221                 SDPGenerate( p_media, cl );
1222
1223             if( psz_sdp != NULL )
1224             {
1225                 answer->i_status = 200;
1226                 httpd_MsgAdd( answer, "Content-type",  "%s",
1227                               "application/sdp" );
1228
1229                 answer->p_body = (uint8_t *)psz_sdp;
1230                 answer->i_body = strlen( psz_sdp );
1231             }
1232             else
1233             {
1234                 answer->i_status = 500;
1235                 answer->p_body = NULL;
1236                 answer->i_body = 0;
1237             }
1238             break;
1239         }
1240
1241         case HTTPD_MSG_PAUSE:
1242             psz_session = httpd_MsgGet( query, "Session" );
1243             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1244
1245             p_rtsp = RtspClientGet( p_media, psz_session );
1246             if( !p_rtsp ) break;
1247
1248             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1249                          0, NULL );
1250             p_rtsp->b_paused = true;
1251
1252             answer->i_status = 200;
1253             answer->i_body = 0;
1254             answer->p_body = NULL;
1255             break;
1256
1257         case HTTPD_MSG_TEARDOWN:
1258             /* for now only multicast so easy again */
1259             answer->i_status = 200;
1260             answer->i_body = 0;
1261             answer->p_body = NULL;
1262
1263             psz_session = httpd_MsgGet( query, "Session" );
1264             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1265
1266             p_rtsp = RtspClientGet( p_media, psz_session );
1267             if( !p_rtsp ) break;
1268
1269             CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1270                          0, NULL );
1271             RtspClientDel( p_media, p_rtsp );
1272             break;
1273
1274         case HTTPD_MSG_GETPARAMETER:
1275             answer->i_status = 200;
1276             answer->i_body = 0;
1277             answer->p_body = NULL;
1278             break;
1279
1280         default:
1281             return VLC_EGENERIC;
1282     }
1283
1284     httpd_MsgAdd( answer, "Server", "VLC Server" );
1285     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1286     psz_cseq = httpd_MsgGet( query, "Cseq" );
1287     psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1288     httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1289     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1290
1291     if( psz_session )
1292     {
1293          if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
1294              httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1295                p_media->p_vod->p_sys->i_session_timeout );
1296          else
1297               httpd_MsgAdd( answer, "Session", "%s", psz_session );
1298     }
1299
1300     return VLC_SUCCESS;
1301 }
1302
1303 static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1304                            httpd_message_t *answer,
1305                            const httpd_message_t *query )
1306 {
1307     media_es_t *p_es = (media_es_t*)p_args;
1308     vod_media_t *p_media = p_es->p_media;
1309     vod_t *p_vod = p_media->p_vod;
1310     rtsp_client_t *p_rtsp = NULL;
1311     const char *psz_transport = NULL;
1312     const char *psz_playnow = NULL; /* support option: x-playNow */
1313     const char *psz_session = NULL;
1314     const char *psz_position = NULL;
1315     const char *psz_cseq = NULL;
1316     int i_cseq = 0;
1317     int i;
1318
1319     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1320
1321     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1322
1323     answer->i_proto   = HTTPD_PROTO_RTSP;
1324     answer->i_version = query->i_version;
1325     answer->i_type    = HTTPD_MSG_ANSWER;
1326     answer->i_body    = 0;
1327     answer->p_body      = NULL;
1328
1329     switch( query->i_type )
1330     {
1331         case HTTPD_MSG_SETUP:
1332             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1333             psz_transport = httpd_MsgGet( query, "Transport" );
1334
1335             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1336
1337             if( strstr( psz_transport, "unicast" ) &&
1338                 strstr( psz_transport, "client_port=" ) )
1339             {
1340                 rtsp_client_t *p_rtsp = NULL;
1341                 rtsp_client_es_t *p_rtsp_es = NULL;
1342                 char ip[NI_MAXNUMERICHOST];
1343                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
1344                                    strlen("client_port=") );
1345
1346                 if( httpd_ClientIP( cl, ip ) == NULL )
1347                 {
1348                     answer->i_status = 500;
1349                     answer->i_body = 0;
1350                     answer->p_body = NULL;
1351                     break;
1352                 }
1353
1354                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1355                         ip, i_port );
1356
1357                 psz_session = httpd_MsgGet( query, "Session" );
1358                 if( !psz_session || !*psz_session )
1359                 {
1360                     char *psz_new;
1361                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1362                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1363                     {
1364                         answer->i_status = 503;
1365                         answer->i_body = 0;
1366                         answer->p_body = NULL;
1367                         break;
1368                     }
1369                     if( asprintf( &psz_new, "%d", rand() ) < 0 )
1370                         return VLC_ENOMEM;
1371                     psz_session = psz_new;
1372
1373                     p_rtsp = RtspClientNew( p_media, psz_new );
1374                 }
1375                 else
1376                 {
1377                     p_rtsp = RtspClientGet( p_media, psz_session );
1378                     if( !p_rtsp )
1379                     {
1380                         answer->i_status = 454;
1381                         answer->i_body = 0;
1382                         answer->p_body = NULL;
1383                         break;
1384                     }
1385                 }
1386
1387                 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1388                 if( !p_rtsp_es )
1389                 {
1390                     answer->i_status = 500;
1391                     answer->i_body = 0;
1392                     answer->p_body = NULL;
1393                     break;
1394                 }
1395                 p_rtsp_es->i_port = i_port;
1396                 p_rtsp_es->psz_ip = strdup( ip );
1397                 p_rtsp_es->p_media_es = p_es;
1398                 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1399
1400                 answer->i_status = 200;
1401                 answer->i_body = 0;
1402                 answer->p_body = NULL;
1403
1404                 if( p_media->b_raw )
1405                 {
1406                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1407                     {
1408                         httpd_MsgAdd( answer, "Transport",
1409                                      "MP2T/H2221/UDP;client_port=%d-%d",
1410                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1411                     }
1412                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1413                     {
1414                         httpd_MsgAdd( answer, "Transport",
1415                                      "RAW/RAW/UDP;client_port=%d-%d",
1416                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1417                     }
1418                 }
1419                 else
1420                 {
1421                     httpd_MsgAdd( answer, "Transport",
1422                                   "RTP/AVP/UDP;client_port=%d-%d",
1423                                   p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1424                 }
1425             }
1426             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1427             {
1428                 answer->i_status = 461;
1429                 answer->i_body = 0;
1430                 answer->p_body = NULL;
1431             }
1432
1433             /* Intentional fall-through on x-playNow option in RTSP request */
1434             if( !psz_playnow )
1435                 break;
1436
1437         case HTTPD_MSG_PLAY:
1438             /* This is kind of a kludge. Should we only support Aggregate
1439              * Operations ? */
1440             psz_session = httpd_MsgGet( query, "Session" );
1441             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1442
1443             p_rtsp = RtspClientGet( p_media, psz_session );
1444
1445             psz_position = httpd_MsgGet( query, "Range" );
1446             if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1447             if( psz_position )
1448             {
1449                 double f_pos = ParseNPT (psz_position + 4);
1450                 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1451                 f_pos /= ((double)(p_media->i_length))/1000 /1000 / 100;
1452                 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1453                              psz_session, f_pos, NULL );
1454             }
1455
1456             if( !psz_playnow )
1457             {
1458                 answer->i_status = 200;
1459                 answer->i_body = 0;
1460                 answer->p_body = NULL;
1461             }
1462             break;
1463
1464         case HTTPD_MSG_TEARDOWN:
1465             answer->i_status = 200;
1466             answer->i_body = 0;
1467             answer->p_body = NULL;
1468
1469             psz_session = httpd_MsgGet( query, "Session" );
1470             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1471
1472             p_rtsp = RtspClientGet( p_media, psz_session );
1473             if( !p_rtsp ) break;
1474
1475             for( i = 0; i < p_rtsp->i_es; i++ )
1476             {
1477                 if( p_rtsp->es[i]->p_media_es == p_es )
1478                 {
1479                     free( p_rtsp->es[i]->psz_ip );
1480                     TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, p_rtsp->es[i] );
1481                     break;
1482                 }
1483             }
1484
1485             if( !p_rtsp->i_es )
1486             {
1487                 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1488                              0, NULL );
1489                 RtspClientDel( p_media, p_rtsp );
1490             }
1491             break;
1492
1493         case HTTPD_MSG_PAUSE:
1494             /* This is kind of a kludge. Should we only support Aggregate
1495              * Operations ? */
1496             psz_session = httpd_MsgGet( query, "Session" );
1497             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1498
1499             p_rtsp = RtspClientGet( p_media, psz_session );
1500             if( !p_rtsp ) break;
1501
1502             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1503                          0, NULL );
1504             p_rtsp->b_paused = true;
1505
1506             answer->i_status = 200;
1507             answer->i_body = 0;
1508             answer->p_body = NULL;
1509             break;
1510
1511         default:
1512             return VLC_EGENERIC;
1513             break;
1514     }
1515
1516     httpd_MsgAdd( answer, "Server", "VLC Server" );
1517     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1518     psz_cseq = httpd_MsgGet( query, "Cseq" );
1519     if (psz_cseq)
1520         i_cseq = atoi( psz_cseq );
1521     else
1522         i_cseq = 0;
1523     httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1524     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1525
1526     if( psz_session )
1527         httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1528
1529     return VLC_SUCCESS;
1530 }
1531
1532 /*****************************************************************************
1533  * SDPGenerate: TODO
1534  * FIXME: need to be moved to a common place ?
1535  *****************************************************************************/
1536 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1537 {
1538     int i, i_size;
1539     char *p, *psz_sdp, ip[NI_MAXNUMERICHOST], ipv;
1540     const char *psz_control;
1541
1542     if( httpd_ServerIP( cl, ip ) == NULL )
1543         return NULL;
1544
1545     p = strchr( ip, '%' );
1546     if( p != NULL )
1547         *p = '\0'; /* remove scope if present */
1548
1549     ipv = ( strchr( ip, ':' ) != NULL ) ? '6' : '4';
1550
1551     /* Calculate size */
1552     i_size = sizeof( "v=0\r\n" ) +
1553         sizeof( "o=- * * IN IP4 \r\n" ) + 10 + NI_MAXNUMERICHOST +
1554         sizeof( "s=*\r\n" ) + strlen( p_media->psz_session_name ) +
1555         sizeof( "i=*\r\n" ) + strlen( p_media->psz_session_description ) +
1556         sizeof( "u=*\r\n" ) + strlen( p_media->psz_session_url ) +
1557         sizeof( "e=*\r\n" ) + strlen( p_media->psz_session_email ) +
1558         sizeof( "c=IN IP4 0.0.0.0\r\n" ) + 20 + 10 +
1559         sizeof( "t=0 0\r\n" ) + /* FIXME */
1560         sizeof( "a=tool:"PACKAGE_STRING"\r\n" ) +
1561         sizeof( "a=range:npt=0-1000000000.000\r\n" );
1562
1563     psz_control = (ipv == '6') ? p_media->psz_rtsp_control_v6
1564                                : p_media->psz_rtsp_control_v4;
1565     for( i = 0; i < p_media->i_es; i++ )
1566     {
1567         media_es_t *p_es = p_media->es[i];
1568
1569         i_size += sizeof( "m=**d*o * RTP/AVP *\r\n" ) + 19;
1570         if( p_es->psz_rtpmap )
1571         {
1572             i_size += sizeof( "a=rtpmap:* *\r\n" ) +
1573                 strlen( p_es->psz_rtpmap ) + 9;
1574         }
1575         if( p_es->psz_fmtp )
1576         {
1577             i_size += sizeof( "a=fmtp:* *\r\n" ) +
1578                 strlen( p_es->psz_fmtp ) + 9;
1579         }
1580     }
1581     i_size += (strlen( psz_control ) + strlen( ip ) + 9) * p_media->i_es;
1582
1583     p = psz_sdp = malloc( i_size );
1584     p += sprintf( p, "v=0\r\n" );
1585     p += sprintf( p, "o=- %"PRId64" %d IN IP%c %s\r\n",
1586                   p_media->i_sdp_id, p_media->i_sdp_version, ipv, ip );
1587     if( *p_media->psz_session_name )
1588         p += sprintf( p, "s=%s\r\n", p_media->psz_session_name );
1589     if( *p_media->psz_session_description )
1590         p += sprintf( p, "i=%s\r\n", p_media->psz_session_description );
1591     if( *p_media->psz_session_url )
1592         p += sprintf( p, "u=%s\r\n", p_media->psz_session_url );
1593     if( *p_media->psz_session_email )
1594         p += sprintf( p, "e=%s\r\n", p_media->psz_session_email );
1595
1596     p += sprintf( p, "c=IN IP%c %s\r\n", ipv, ipv == '6' ? "::" : "0.0.0.0" );
1597     p += sprintf( p, "t=0 0\r\n" ); /* FIXME */
1598     p += sprintf( p, "a=tool:"PACKAGE_STRING"\r\n" );
1599
1600     if( p_media->i_length > 0 )
1601     {
1602         lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
1603         p += sprintf( p, "a=range:npt=0-%lld.%03u\r\n", d.quot,
1604                       (unsigned)d.rem );
1605     }
1606
1607     for( i = 0; i < p_media->i_es; i++ )
1608     {
1609         media_es_t *p_es = p_media->es[i];
1610
1611         if( p_es->fmt.i_cat == AUDIO_ES )
1612         {
1613             p += sprintf( p, "m=audio %d RTP/AVP %d\r\n",
1614                           p_es->i_port, p_es->i_payload_type );
1615         }
1616         else if( p_es->fmt.i_cat == VIDEO_ES )
1617         {
1618             p += sprintf( p, "m=video %d RTP/AVP %d\r\n",
1619                           p_es->i_port, p_es->i_payload_type );
1620         }
1621         else
1622         {
1623             continue;
1624         }
1625
1626         if( p_es->psz_rtpmap )
1627         {
1628             p += sprintf( p, "a=rtpmap:%d %s\r\n", p_es->i_payload_type,
1629                           p_es->psz_rtpmap );
1630         }
1631         if( p_es->psz_fmtp )
1632         {
1633             p += sprintf( p, "a=fmtp:%d %s\r\n", p_es->i_payload_type,
1634                           p_es->psz_fmtp );
1635         }
1636
1637         p += sprintf( p, psz_control, ip, i );
1638     }
1639
1640     return psz_sdp;
1641 }