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

   1 /*****************************************************************************
   2  * rtsp.c: rtsp VoD server module
   3  *****************************************************************************
   4  * Copyright (C) 2003-2006 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   8  *          Gildas Bazin <gbazin@videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32
  33 #include <vlc_common.h>
  34 #include <vlc_plugin.h>
  35 #include <vlc_input.h>
  36 #include <vlc_sout.h>
  37 #include <vlc_block.h>
  38
  39 #include <vlc_httpd.h>
  40 #include <vlc_vod.h>
  41 #include <vlc_url.h>
  42 #include <vlc_network.h>
  43 #include <vlc_charset.h>
  44 #include <vlc_strings.h>
  45 #include <vlc_rand.h>
  46
  47 #ifndef WIN32
  48 # include <locale.h>
  49 #endif
  50
  51 #ifdef HAVE_XLOCALE_H
  52 # include <xlocale.h>
  53 #endif
  54
  55 /*****************************************************************************
  56  * Module descriptor
  57  *****************************************************************************/
  58 static int  Open ( vlc_object_t * );
  59 static void Close( vlc_object_t * );
  60
  61 #define HOST_TEXT N_( "RTSP host address" )
  62 #define HOST_LONGTEXT N_( \
  63     "This defines the address, port and path the RTSP VOD server will listen " \
  64     "on.\nSyntax is address:port/path. The default is to listen on all "\
  65     "interfaces (address 0.0.0.0), on port 554, with no path.\nTo listen " \
  66     "only on the local interface, use \"localhost\" as address." )
  67
  68 #define THROTTLE_TEXT N_( "Maximum number of connections" )
  69 #define THROTTLE_LONGTEXT N_( "This limits the maximum number of clients " \
  70     "that can connect to the RTSP VOD. 0 means no limit."  )
  71
  72 #define RAWMUX_TEXT N_( "MUX for RAW RTSP transport" )
  73
  74 #define SESSION_TIMEOUT_TEXT N_( "Sets the timeout option in the RTSP " \
  75     "session string" )
  76 #define SESSION_TIMEOUT_LONGTEXT N_( "Defines what timeout option to add " \
  77     "to the RTSP session ID string. Setting it to a negative number removes " \
  78     "the timeout option entirely. This is needed by some IPTV STBs (such as " \
  79     "those made by HansunTech) which get confused by it. The default is 5." )
  80
  81 vlc_module_begin ()
  82     set_shortname( N_("RTSP VoD" ) )
  83     set_description( N_("RTSP VoD server") )
  84     set_category( CAT_SOUT )
  85     set_subcategory( SUBCAT_SOUT_VOD )
  86     set_capability( "vod server", 1 )
  87     set_callbacks( Open, Close )
  88     add_shortcut( "rtsp" )
  89     add_string ( "rtsp-host", NULL, HOST_TEXT, HOST_LONGTEXT, true )
  90     add_string( "rtsp-raw-mux", "ts", RAWMUX_TEXT,
  91                 RAWMUX_TEXT, true )
  92     add_integer( "rtsp-throttle-users", 0, THROTTLE_TEXT,
  93                  THROTTLE_LONGTEXT, true )
  94     add_integer( "rtsp-session-timeout", 5, SESSION_TIMEOUT_TEXT,
  95                  SESSION_TIMEOUT_LONGTEXT, true )
  96 vlc_module_end ()
  97
  98 /*****************************************************************************
  99  * Exported prototypes
 100  *****************************************************************************/
 101
 102 typedef struct media_es_t media_es_t;
 103
 104 typedef struct
 105 {
 106     media_es_t *p_media_es;
 107     int i_port;
 108
 109 } rtsp_client_es_t;
 110
 111 typedef struct
 112 {
 113     char *psz_session;
 114
 115     bool b_playing; /* is it in "play" state */
 116     bool b_paused; /* is it in "pause" state */
 117
 118     int i_es;
 119     rtsp_client_es_t **es;
 120
 121 } rtsp_client_t;
 122
 123 struct media_es_t
 124 {
 125     /* VoD server */
 126     vod_t *p_vod;
 127
 128     /* RTSP server */
 129     httpd_url_t *p_rtsp_url;
 130
 131     vod_media_t *p_media;
 132
 133     es_format_t fmt;
 134     uint8_t     i_payload_type;
 135     const char  *psz_ptname;
 136     unsigned    i_clock_rate;
 137     unsigned    i_channels;
 138     char        *psz_fmtp;
 139
 140 };
 141
 142 struct vod_media_t
 143 {
 144     int id;
 145
 146     /* VoD server */
 147     vod_t *p_vod;
 148
 149     /* RTSP server */
 150     httpd_url_t  *p_rtsp_url;
 151     char         *psz_rtsp_control_v4;
 152     char         *psz_rtsp_control_v6;
 153     char         *psz_rtsp_path;
 154
 155     vlc_mutex_t lock;
 156
 157     /* ES list */
 158     int        i_es;
 159     media_es_t **es;
 160     const char *psz_mux;
 161     bool  b_raw;
 162
 163     /* RTSP client */
 164     int           i_rtsp;
 165     rtsp_client_t **rtsp;
 166
 167     /* Infos */
 168     mtime_t i_length;
 169 };
 170
 171 struct vod_sys_t
 172 {
 173     /* RTSP server */
 174     httpd_host_t *p_rtsp_host;
 175     char *psz_path;
 176     int i_port;
 177     int i_throttle_users;
 178     int i_connections;
 179
 180     char *psz_raw_mux;
 181
 182     int i_session_timeout;
 183
 184     /* List of media */
 185     int i_media_id;
 186     int i_media;
 187     vod_media_t **media;
 188
 189     /* */
 190     block_fifo_t *p_fifo_cmd;
 191 };
 192
 193 /* rtsp delayed command (to avoid deadlock between vlm/httpd) */
 194 typedef enum
 195 {
 196     RTSP_CMD_TYPE_NONE,  /* Exit requested */
 197
 198     RTSP_CMD_TYPE_PLAY,
 199     RTSP_CMD_TYPE_PAUSE,
 200     RTSP_CMD_TYPE_STOP,
 201     RTSP_CMD_TYPE_SEEK,
 202     RTSP_CMD_TYPE_REWIND,
 203     RTSP_CMD_TYPE_FORWARD,
 204
 205     RTSP_CMD_TYPE_ADD,
 206     RTSP_CMD_TYPE_DEL,
 207 } rtsp_cmd_type_t;
 208
 209 /* */
 210 typedef struct
 211 {
 212     int i_type;
 213     int i_media_id;
 214     vod_media_t *p_media;
 215     char *psz_session;
 216     char *psz_arg;
 217     double f_arg;
 218 } rtsp_cmd_t;
 219
 220 static vod_media_t *MediaNew( vod_t *, const char *, input_item_t * );
 221 static void         MediaDel( vod_t *, vod_media_t * );
 222 static void         MediaAskDel ( vod_t *, vod_media_t * );
 223 static int          MediaAddES( vod_t *, vod_media_t *, es_format_t * );
 224 static void         MediaDelES( vod_t *, vod_media_t *, es_format_t * );
 225
 226 static void* CommandThread( vlc_object_t *p_this );
 227 static void  CommandPush( vod_t *, rtsp_cmd_type_t, vod_media_t *, const char *psz_session,
 228                           double f_arg, const char *psz_arg );
 229
 230 static rtsp_client_t *RtspClientNew( vod_media_t *, char * );
 231 static rtsp_client_t *RtspClientGet( vod_media_t *, const char * );
 232 static void           RtspClientDel( vod_media_t *, rtsp_client_t * );
 233
 234 static int RtspCallback( httpd_callback_sys_t *, httpd_client_t *,
 235                          httpd_message_t *, const httpd_message_t * );
 236 static int RtspCallbackES( httpd_callback_sys_t *, httpd_client_t *,
 237                            httpd_message_t *, const httpd_message_t * );
 238
 239 static char *SDPGenerate( const vod_media_t *, httpd_client_t *cl );
 240
 241 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
 242 {
 243     static const char hex[16] = "0123456789abcdef";
 244
 245     for( int i = 0; i < i_data; i++ )
 246     {
 247         s[2*i+0] = hex[(p_data[i]>>4)&0xf];
 248         s[2*i+1] = hex[(p_data[i]   )&0xf];
 249     }
 250     s[2*i_data] = '\0';
 251 }
 252
 253 /*****************************************************************************
 254  * Open: Starts the RTSP server module
 255  *****************************************************************************/
 256 static int Open( vlc_object_t *p_this )
 257 {
 258     vod_t *p_vod = (vod_t *)p_this;
 259     vod_sys_t *p_sys = NULL;
 260     char *psz_url = NULL;
 261     vlc_url_t url;
 262
 263     psz_url = var_InheritString( p_vod, "rtsp-host" );
 264     vlc_UrlParse( &url, psz_url, 0 );
 265     free( psz_url );
 266
 267     if( url.i_port <= 0 ) url.i_port = 554;
 268
 269     p_vod->p_sys = p_sys = malloc( sizeof( vod_sys_t ) );
 270     if( !p_sys ) goto error;
 271     p_sys->p_rtsp_host = 0;
 272
 273     p_sys->i_session_timeout = var_CreateGetInteger( p_this, "rtsp-session-timeout" );
 274
 275     p_sys->i_throttle_users = var_CreateGetInteger( p_this, "rtsp-throttle-users" );
 276     msg_Dbg( p_this, "allowing up to %d connections", p_sys->i_throttle_users );
 277     p_sys->i_connections = 0;
 278
 279     p_sys->psz_raw_mux = var_CreateGetString( p_this, "rtsp-raw-mux" );
 280
 281     p_sys->p_rtsp_host =
 282         httpd_HostNew( VLC_OBJECT(p_vod), url.psz_host, url.i_port );
 283     if( !p_sys->p_rtsp_host )
 284     {
 285         msg_Err( p_vod, "cannot create RTSP server (%s:%i)",
 286                  url.psz_host, url.i_port );
 287         goto error;
 288     }
 289
 290     p_sys->psz_path = strdup( url.psz_path ? url.psz_path : "/" );
 291     p_sys->i_port = url.i_port;
 292
 293     vlc_UrlClean( &url );
 294
 295     TAB_INIT( p_sys->i_media, p_sys->media );
 296     p_sys->i_media_id = 0;
 297
 298     p_vod->pf_media_new = MediaNew;
 299     p_vod->pf_media_del = MediaAskDel;
 300
 301     p_sys->p_fifo_cmd = block_FifoNew();
 302     if( vlc_thread_create( p_vod, "rtsp vod thread", CommandThread,
 303                            VLC_THREAD_PRIORITY_LOW ) )
 304     {
 305         msg_Err( p_vod, "cannot spawn rtsp vod thread" );
 306         block_FifoRelease( p_sys->p_fifo_cmd );
 307         free( p_sys->psz_path );
 308         goto error;
 309     }
 310
 311     return VLC_SUCCESS;
 312
 313 error:
 314     if( p_sys )
 315     {
 316         if( p_sys->p_rtsp_host ) httpd_HostDelete( p_sys->p_rtsp_host );
 317         free( p_sys->psz_raw_mux );
 318         free( p_sys );
 319     }
 320     vlc_UrlClean( &url );
 321
 322     return VLC_EGENERIC;
 323 }
 324
 325 /*****************************************************************************
 326  * Close:
 327  *****************************************************************************/
 328 static void Close( vlc_object_t * p_this )
 329 {
 330     vod_t *p_vod = (vod_t *)p_this;
 331     vod_sys_t *p_sys = p_vod->p_sys;
 332
 333     /* Stop command thread */
 334     vlc_object_kill( p_vod );
 335     CommandPush( p_vod, RTSP_CMD_TYPE_NONE, NULL, NULL, 0.0, NULL );
 336     vlc_thread_join( p_vod );
 337
 338     while( block_FifoCount( p_sys->p_fifo_cmd ) > 0 )
 339     {
 340         rtsp_cmd_t cmd;
 341         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 342         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 343         block_Release( p_block_cmd );
 344         if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 345             MediaDel(p_vod, cmd.p_media);
 346         free( cmd.psz_session );
 347         free( cmd.psz_arg );
 348     }
 349     block_FifoRelease( p_sys->p_fifo_cmd );
 350
 351     httpd_HostDelete( p_sys->p_rtsp_host );
 352     var_Destroy( p_this, "rtsp-session-timeout" );
 353     var_Destroy( p_this, "rtsp-throttle-users" );
 354     var_Destroy( p_this, "rtsp-raw-mux" );
 355
 356     /* Check VLM is not buggy */
 357     if( p_sys->i_media > 0 )
 358         msg_Err( p_vod, "rtsp vod leaking %d medias", p_sys->i_media );
 359     TAB_CLEAN( p_sys->i_media, p_sys->media );
 360
 361     free( p_sys->psz_path );
 362     free( p_sys->psz_raw_mux );
 363     free( p_sys );
 364 }
 365
 366 /*****************************************************************************
 367  * Media handling
 368  *****************************************************************************/
 369 static vod_media_t *MediaNew( vod_t *p_vod, const char *psz_name,
 370                               input_item_t *p_item )
 371 {
 372     vod_sys_t *p_sys = p_vod->p_sys;
 373
 374     vod_media_t *p_media = calloc( 1, sizeof(vod_media_t) );
 375     if( !p_media )
 376         return NULL;
 377
 378     p_media->id = p_sys->i_media_id++;
 379     TAB_INIT( p_media->i_es, p_media->es );
 380     p_media->psz_mux = NULL;
 381     TAB_INIT( p_media->i_rtsp, p_media->rtsp );
 382     p_media->b_raw = false;
 383
 384     if( asprintf( &p_media->psz_rtsp_path, "%s%s",
 385                   p_sys->psz_path, psz_name ) <0 )
 386         return NULL;
 387     p_media->p_rtsp_url =
 388         httpd_UrlNewUnique( p_sys->p_rtsp_host, p_media->psz_rtsp_path, NULL,
 389                             NULL, NULL );
 390
 391     if( !p_media->p_rtsp_url )
 392     {
 393         msg_Err( p_vod, "cannot create RTSP url (%s)", p_media->psz_rtsp_path);
 394         free( p_media->psz_rtsp_path );
 395         free( p_media );
 396         return NULL;
 397     }
 398
 399     msg_Dbg( p_vod, "created RTSP url: %s", p_media->psz_rtsp_path );
 400
 401     if( asprintf( &p_media->psz_rtsp_control_v4,
 402                "rtsp://%%s:%d%s/trackID=%%d",
 403                p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 404     {
 405         httpd_UrlDelete( p_media->p_rtsp_url );
 406         free( p_media->psz_rtsp_path );
 407         free( p_media );
 408         return NULL;
 409     }
 410     if( asprintf( &p_media->psz_rtsp_control_v6,
 411                "rtsp://[%%s]:%d%s/trackID=%%d",
 412               p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 413     {
 414         httpd_UrlDelete( p_media->p_rtsp_url );
 415         free( p_media->psz_rtsp_path );
 416         free( p_media );
 417         return NULL;
 418     }
 419
 420     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_SETUP,
 421                     RtspCallback, (void*)p_media );
 422     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_DESCRIBE,
 423                     RtspCallback, (void*)p_media );
 424     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PLAY,
 425                     RtspCallback, (void*)p_media );
 426     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PAUSE,
 427                     RtspCallback, (void*)p_media );
 428     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_GETPARAMETER,
 429                     RtspCallback, (void*)p_media );
 430     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 431                     RtspCallback, (void*)p_media );
 432
 433     p_media->p_vod = p_vod;
 434
 435     vlc_mutex_init( &p_media->lock );
 436
 437     p_media->i_length = input_item_GetDuration( p_item );
 438
 439     vlc_mutex_lock( &p_item->lock );
 440     msg_Dbg( p_vod, "media has %i declared ES", p_item->i_es );
 441     for( int i = 0; i < p_item->i_es; i++ )
 442     {
 443         MediaAddES( p_vod, p_media, p_item->es[i] );
 444     }
 445     vlc_mutex_unlock( &p_item->lock );
 446
 447     CommandPush( p_vod, RTSP_CMD_TYPE_ADD, p_media, NULL, 0.0, NULL );
 448     return p_media;
 449 }
 450
 451 static void MediaAskDel ( vod_t *p_vod, vod_media_t *p_media )
 452 {
 453     CommandPush( p_vod, RTSP_CMD_TYPE_DEL, p_media, NULL, 0.0, NULL );
 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     TAB_REMOVE( p_sys->i_media, p_sys->media, p_media );
 463
 464     httpd_UrlDelete( p_media->p_rtsp_url );
 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     free( p_media->psz_rtsp_path );
 471     free( p_media->psz_rtsp_control_v6 );
 472     free( p_media->psz_rtsp_control_v4 );
 473
 474     while( p_media->i_es )
 475         MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );
 476     TAB_CLEAN( p_media->i_es, p_media->es );
 477
 478     vlc_mutex_destroy( &p_media->lock );
 479
 480     free( p_media );
 481 }
 482
 483 static int MediaAddES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt )
 484 {
 485     char *psz_urlc;
 486
 487     media_es_t *p_es = calloc( 1, sizeof(media_es_t) );
 488     if( !p_es )
 489         return VLC_ENOMEM;
 490
 491     p_media->psz_mux = NULL;
 492
 493     /* TODO: update SDP, etc... */
 494     if( asprintf( &psz_urlc, "%s/trackID=%d",
 495               p_media->psz_rtsp_path, p_media->i_es ) < 0 )
 496     {
 497         free( p_es );
 498         return VLC_ENOMEM;
 499     }
 500     msg_Dbg( p_vod, "  - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
 501
 502     /* Dynamic payload. No conflict since we put each ES in its own
 503      * RTP session */
 504     p_es->i_payload_type = 96;
 505     p_es->i_clock_rate = 90000;
 506     p_es->i_channels = 1;
 507
 508     switch( p_fmt->i_codec )
 509     {
 510         case VLC_CODEC_S16B:
 511             if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
 512             {
 513                 p_es->i_payload_type = 11;
 514             }
 515             else if( p_fmt->audio.i_channels == 2 &&
 516                      p_fmt->audio.i_rate == 44100 )
 517             {
 518                 p_es->i_payload_type = 10;
 519             }
 520             p_es->psz_ptname = "L16";
 521             p_es->i_clock_rate = p_fmt->audio.i_rate;
 522             p_es->i_channels = p_fmt->audio.i_channels;
 523             break;
 524         case VLC_CODEC_U8:
 525             p_es->psz_ptname = "L8";
 526             p_es->i_clock_rate = p_fmt->audio.i_rate;
 527             p_es->i_channels = p_fmt->audio.i_channels;
 528             break;
 529         case VLC_CODEC_MPGA:
 530             p_es->i_payload_type = 14;
 531             p_es->psz_ptname = "MPA";
 532             break;
 533         case VLC_CODEC_MPGV:
 534             p_es->i_payload_type = 32;
 535             p_es->psz_ptname = "MPV";
 536             break;
 537         case VLC_CODEC_A52:
 538             p_es->psz_ptname = "ac3";
 539             p_es->i_clock_rate = p_fmt->audio.i_rate;
 540             break;
 541         case VLC_CODEC_H263:
 542             p_es->psz_ptname = "H263-1998";
 543             break;
 544         case VLC_CODEC_H264:
 545             p_es->psz_ptname = "H264";
 546             p_es->psz_fmtp = NULL;
 547             /* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
 548             if( p_fmt->i_extra > 0 )
 549             {
 550                 uint8_t *p_buffer = p_fmt->p_extra;
 551                 int     i_buffer = p_fmt->i_extra;
 552                 char    *p_64_sps = NULL;
 553                 char    *p_64_pps = NULL;
 554                 char    hexa[6+1];
 555
 556                 while( i_buffer > 4 )
 557                 {
 558                     int i_offset    = 0;
 559                     int i_size      = 0;
 560
 561                     while( p_buffer[0] != 0 || p_buffer[1] != 0 ||
 562                            p_buffer[2] != 1 )
 563                     {
 564                         p_buffer++;
 565                         i_buffer--;
 566                         if( i_buffer == 0 ) break;
 567                     }
 568
 569                     if( i_buffer < 4 || memcmp(p_buffer, "\x00\x00\x01", 3 ) )
 570                     {
 571                         /* No startcode found.. */
 572                         break;
 573                     }
 574                     p_buffer += 3;
 575                     i_buffer -= 3;
 576
 577                     const int i_nal_type = p_buffer[0]&0x1f;
 578
 579                     i_size = i_buffer;
 580                     for( i_offset = 0; i_offset+2 < i_buffer ; i_offset++)
 581                     {
 582                         if( !memcmp(p_buffer + i_offset, "\x00\x00\x01", 3 ) )
 583                         {
 584                             /* we found another startcode */
 585                             while( i_offset > 0 && 0 == p_buffer[ i_offset - 1 ] )
 586                                 i_offset--;
 587                             i_size = i_offset;
 588                             break;
 589                         }
 590                     }
 591
 592                     if( i_size == 0 )
 593                     {
 594                         /* No-info found in nal */
 595                         continue;
 596                     }
 597
 598                     if( i_nal_type == 7 )
 599                     {
 600                         free( p_64_sps );
 601                         p_64_sps = vlc_b64_encode_binary( p_buffer, i_size );
 602                         /* XXX: nothing ensures that i_size >= 4 ?? */
 603                         sprintf_hexa( hexa, &p_buffer[1], 3 );
 604                     }
 605                     else if( i_nal_type == 8 )
 606                     {
 607                         free( p_64_pps );
 608                         p_64_pps = vlc_b64_encode_binary( p_buffer, i_size );
 609                     }
 610                     i_buffer -= i_size;
 611                     p_buffer += i_size;
 612                 }
 613                 /* */
 614                 if( p_64_sps && p_64_pps )
 615                 {
 616                     if( asprintf( &p_es->psz_fmtp,
 617                                   "packetization-mode=1;profile-level-id=%s;"
 618                                   "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
 619                                   p_64_pps ) < 0 )
 620                     {
 621                         free( p_64_sps );
 622                         free( p_64_pps );
 623                         free( psz_urlc );
 624                         free( p_es );
 625                         return VLC_ENOMEM;
 626                     }
 627                 }
 628                 free( p_64_sps );
 629                 free( p_64_pps );
 630             }
 631             if( !p_es->psz_fmtp )
 632                 p_es->psz_fmtp = strdup( "packetization-mode=1" );
 633             break;
 634         case VLC_CODEC_MP4V:
 635             p_es->psz_ptname = "MP4V-ES";
 636             if( p_fmt->i_extra > 0 )
 637             {
 638                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 639                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 640                 if( asprintf( &p_es->psz_fmtp,
 641                               "profile-level-id=3; config=%s;", p_hexa ) == -1 )
 642                     p_es->psz_fmtp = NULL;
 643                 free( p_hexa );
 644             }
 645             break;
 646         case VLC_CODEC_MP4A:
 647             p_es->psz_ptname = "mpeg4-generic";
 648             p_es->i_clock_rate = p_fmt->audio.i_rate;
 649             if( p_fmt->i_extra > 0 )
 650             {
 651                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 652                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 653                 if( asprintf( &p_es->psz_fmtp,
 654                               "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
 655                               "config=%s; SizeLength=13;IndexLength=3; "
 656                               "IndexDeltaLength=3; Profile=1;", p_hexa ) == -1 )
 657                     p_es->psz_fmtp = NULL;
 658                 free( p_hexa );
 659             }
 660             break;
 661         case VLC_FOURCC( 'm', 'p', '2', 't' ):
 662             p_media->psz_mux = "ts";
 663             p_es->i_payload_type = 33;
 664             p_es->psz_ptname = "MP2T";
 665             break;
 666         case VLC_FOURCC( 'm', 'p', '2', 'p' ):
 667             p_media->psz_mux = "ps";
 668             p_es->psz_ptname = "MP2P";
 669             break;
 670         case VLC_CODEC_AMR_NB:
 671             p_es->psz_ptname = "AMR";
 672             p_es->i_clock_rate = 8000;
 673             if(p_fmt->audio.i_channels == 2 )
 674                 p_es->i_channels = 2;
 675             p_es->psz_fmtp = strdup( "octet-align=1" );
 676             break;
 677         case VLC_CODEC_AMR_WB:
 678             p_es->psz_ptname = "AMR-WB";
 679             p_es->i_clock_rate = 16000;
 680             if(p_fmt->audio.i_channels == 2 )
 681                 p_es->i_channels = 2;
 682             p_es->psz_fmtp = strdup( "octet-align=1" );
 683             break;
 684
 685         default:
 686             msg_Err( p_vod, "cannot add this stream (unsupported "
 687                     "codec: %4.4s)", (char*)&p_fmt->i_codec );
 688             free( psz_urlc );
 689             free( p_es );
 690             return VLC_EGENERIC;
 691     }
 692
 693     p_es->p_rtsp_url =
 694         httpd_UrlNewUnique( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL,
 695                             NULL );
 696
 697     if( !p_es->p_rtsp_url )
 698     {
 699         msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
 700         free( psz_urlc );
 701         free( p_es );
 702         return VLC_EGENERIC;
 703     }
 704     free( psz_urlc );
 705
 706     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
 707                     RtspCallbackES, (void*)p_es );
 708     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 709                     RtspCallbackES, (void*)p_es );
 710     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
 711                     RtspCallbackES, (void*)p_es );
 712     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
 713                     RtspCallbackES, (void*)p_es );
 714
 715     es_format_Copy( &p_es->fmt, p_fmt );
 716     p_es->p_vod = p_vod;
 717     p_es->p_media = p_media;
 718
 719     vlc_mutex_lock( &p_media->lock );
 720     TAB_APPEND( p_media->i_es, p_media->es, p_es );
 721     vlc_mutex_unlock( &p_media->lock );
 722
 723     return VLC_SUCCESS;
 724 }
 725
 726 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
 727 {
 728     media_es_t *p_es = NULL;
 729
 730     /* Find the ES */
 731     for( int i = 0; i < p_media->i_es; i++ )
 732     {
 733         if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
 734             p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
 735             p_media->es[i]->fmt.i_id == p_fmt->i_id )
 736         {
 737             p_es = p_media->es[i];
 738         }
 739     }
 740     if( !p_es ) return;
 741
 742     msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );
 743
 744     vlc_mutex_lock( &p_media->lock );
 745     TAB_REMOVE( p_media->i_es, p_media->es, p_es );
 746     vlc_mutex_unlock( &p_media->lock );
 747
 748     free( p_es->psz_fmtp );
 749
 750     if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
 751     es_format_Clean( &p_es->fmt );
 752     free( p_es );
 753 }
 754
 755 static void CommandPush( vod_t *p_vod, rtsp_cmd_type_t i_type, vod_media_t *p_media, const char *psz_session,
 756                          double f_arg, const char *psz_arg )
 757 {
 758     rtsp_cmd_t cmd;
 759     block_t *p_cmd;
 760
 761     memset( &cmd, 0, sizeof(cmd) );
 762     cmd.i_type = i_type;
 763     cmd.p_media = p_media;
 764     if( p_media )
 765         cmd.i_media_id = p_media->id;
 766     if( psz_session )
 767         cmd.psz_session = strdup(psz_session);
 768     cmd.f_arg = f_arg;
 769     if( psz_arg )
 770         cmd.psz_arg = strdup(psz_arg);
 771
 772     p_cmd = block_New( p_vod, sizeof(rtsp_cmd_t) );
 773     memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
 774
 775     block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
 776 }
 777
 778 static void* CommandThread( vlc_object_t *p_this )
 779 {
 780     vod_t *p_vod = (vod_t*)p_this;
 781     vod_sys_t *p_sys = p_vod->p_sys;
 782     int canc = vlc_savecancel ();
 783
 784     while( vlc_object_alive (p_vod) )
 785     {
 786         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 787         rtsp_cmd_t cmd;
 788         vod_media_t *p_media = NULL;
 789         int i;
 790
 791         if( !p_block_cmd )
 792             break;
 793
 794         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 795         block_Release( p_block_cmd );
 796
 797         if( cmd.i_type == RTSP_CMD_TYPE_NONE )
 798             break;
 799
 800         if ( cmd.i_type == RTSP_CMD_TYPE_ADD )
 801         {
 802             TAB_APPEND( p_sys->i_media, p_sys->media, cmd.p_media );
 803             goto next;
 804         }
 805
 806         if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 807         {
 808             MediaDel(p_vod, cmd.p_media);
 809             goto next;
 810         }
 811
 812         /* */
 813         for( i = 0; i < p_sys->i_media; i++ )
 814         {
 815             if( p_sys->media[i]->id == cmd.i_media_id )
 816                 break;
 817         }
 818         if( i >= p_sys->i_media )
 819         {
 820             goto next;
 821         }
 822         p_media = p_sys->media[i];
 823
 824         switch( cmd.i_type )
 825         {
 826         case RTSP_CMD_TYPE_PLAY:
 827             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 828                               VOD_MEDIA_PLAY, cmd.psz_arg );
 829             break;
 830         case RTSP_CMD_TYPE_PAUSE:
 831             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 832                               VOD_MEDIA_PAUSE );
 833             break;
 834
 835         case RTSP_CMD_TYPE_STOP:
 836             vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
 837             break;
 838
 839         case RTSP_CMD_TYPE_SEEK:
 840             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 841                               VOD_MEDIA_SEEK, cmd.f_arg );
 842             break;
 843
 844         case RTSP_CMD_TYPE_REWIND:
 845             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 846                               VOD_MEDIA_REWIND, cmd.f_arg );
 847             break;
 848
 849         case RTSP_CMD_TYPE_FORWARD:
 850             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 851                               VOD_MEDIA_FORWARD, cmd.f_arg );
 852             break;
 853
 854         default:
 855             break;
 856         }
 857
 858     next:
 859         free( cmd.psz_session );
 860         free( cmd.psz_arg );
 861     }
 862
 863     vlc_restorecancel (canc);
 864     return NULL;
 865 }
 866
 867 /****************************************************************************
 868  * RTSP server implementation
 869  ****************************************************************************/
 870 static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
 871 {
 872     rtsp_client_t *p_rtsp = calloc( 1, sizeof(rtsp_client_t) );
 873
 874     if( !p_rtsp )
 875         return NULL;
 876     p_rtsp->es = 0;
 877
 878     p_rtsp->psz_session = psz_session;
 879     TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 880
 881     p_media->p_vod->p_sys->i_connections++;
 882     msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
 883              psz_session, p_media->p_vod->p_sys->i_throttle_users );
 884
 885     return p_rtsp;
 886 }
 887
 888 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
 889 {
 890     for( int i = 0; psz_session && i < p_media->i_rtsp; i++ )
 891     {
 892         if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
 893             return p_media->rtsp[i];
 894     }
 895
 896     return NULL;
 897 }
 898
 899 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
 900 {
 901     p_media->p_vod->p_sys->i_connections--;
 902     msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
 903              p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
 904
 905     while( p_rtsp->i_es )
 906     {
 907         p_rtsp->i_es--;
 908         free( p_rtsp->es[p_rtsp->i_es] );
 909     }
 910     free( p_rtsp->es );
 911
 912     TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 913
 914     free( p_rtsp->psz_session );
 915     free( p_rtsp );
 916 }
 917
 918
 919 static float ParseNPT (const char *str)
 920 {
 921     locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
 922     locale_t oldloc = uselocale (loc);
 923     unsigned hour, min;
 924     float sec;
 925
 926     if (sscanf (str, "%u:%u:%f", &hour, &min, &sec) == 3)
 927         sec += ((hour * 60) + min) * 60;
 928     else
 929     if (sscanf (str, "%f", &sec) != 1)
 930         sec = 0.;
 931
 932     if (loc != (locale_t)0)
 933     {
 934         uselocale (oldloc);
 935         freelocale (loc);
 936     }
 937     return sec;
 938 }
 939
 940
 941 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
 942                          httpd_message_t *answer, const httpd_message_t *query )
 943 {
 944     vod_media_t *p_media = (vod_media_t*)p_args;
 945     vod_t *p_vod = p_media->p_vod;
 946     const char *psz_transport = NULL;
 947     const char *psz_playnow = NULL; /* support option: x-playNow */
 948     const char *psz_session = NULL;
 949     const char *psz_cseq = NULL;
 950     rtsp_client_t *p_rtsp;
 951     int i_port = 0;
 952     int i_cseq = 0;
 953
 954     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
 955
 956     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
 957
 958     answer->i_proto   = HTTPD_PROTO_RTSP;
 959     answer->i_version = query->i_version;
 960     answer->i_type    = HTTPD_MSG_ANSWER;
 961     answer->i_body    = 0;
 962     answer->p_body    = NULL;
 963
 964     switch( query->i_type )
 965     {
 966         case HTTPD_MSG_SETUP:
 967         {
 968             psz_playnow = httpd_MsgGet( query, "x-playNow" );
 969             psz_transport = httpd_MsgGet( query, "Transport" );
 970             if( psz_transport == NULL )
 971             {
 972                 answer->i_status = 400;
 973                 break;
 974             }
 975             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
 976
 977             if( strstr( psz_transport, "unicast" ) &&
 978                 strstr( psz_transport, "client_port=" ) )
 979             {
 980                 rtsp_client_t *p_rtsp = NULL;
 981                 char ip[NI_MAXNUMERICHOST];
 982                 i_port = atoi( strstr( psz_transport, "client_port=" ) +
 983                                 strlen("client_port=") );
 984
 985                 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
 986                     strstr( psz_transport, "RAW/RAW/UDP" ) )
 987                 {
 988                     p_media->psz_mux = p_vod->p_sys->psz_raw_mux;
 989                     p_media->b_raw = true;
 990                 }
 991
 992                 if( httpd_ClientIP( cl, ip ) == NULL )
 993                 {
 994                     answer->i_status = 500;
 995                     answer->i_body = 0;
 996                     answer->p_body = NULL;
 997                     break;
 998                 }
 999
1000                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1001                          ip, i_port );
1002
1003                 psz_session = httpd_MsgGet( query, "Session" );
1004                 if( !psz_session || !*psz_session )
1005                 {
1006                     char *psz_new;
1007                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1008                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1009                     {
1010                         answer->i_status = 503;
1011                         answer->i_body = 0;
1012                         answer->p_body = NULL;
1013                         break;
1014                     }
1015 #warning Should use secure randomness here! (spoofing risk)
1016                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1017                         return VLC_ENOMEM;
1018                     psz_session = psz_new;
1019
1020                     p_rtsp = RtspClientNew( p_media, psz_new );
1021                     if( !p_rtsp )
1022                     {
1023                         answer->i_status = 454;
1024                         answer->i_body = 0;
1025                         answer->p_body = NULL;
1026                         break;
1027                     }
1028                 }
1029                 else
1030                 {
1031                     p_rtsp = RtspClientGet( p_media, psz_session );
1032                     if( !p_rtsp )
1033                     {
1034                         answer->i_status = 454;
1035                         answer->i_body = 0;
1036                         answer->p_body = NULL;
1037                         break;
1038                     }
1039                 }
1040
1041                 answer->i_status = 200;
1042                 answer->i_body = 0;
1043                 answer->p_body = NULL;
1044
1045                 if( p_media->b_raw )
1046                 {
1047                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1048                     {
1049                         httpd_MsgAdd( answer, "Transport",
1050                                       "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1051                                       i_port, i_port + 1 );
1052                     }
1053                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1054                     {
1055                         httpd_MsgAdd( answer, "Transport",
1056                                       "RAW/RAW/UDP;unicast;client_port=%d-%d",
1057                                       i_port, i_port + 1 );
1058                     }
1059                 }
1060                 else
1061                     httpd_MsgAdd( answer, "Transport",
1062                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1063                                   i_port, i_port + 1 );
1064             }
1065             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1066             {
1067                 answer->i_status = 461;
1068                 answer->i_body = 0;
1069                 answer->p_body = NULL;
1070             }
1071
1072             /* Intentional fall-through on x-playNow option in RTSP request */
1073             if( !psz_playnow )
1074                 break;
1075         }
1076
1077         case HTTPD_MSG_PLAY:
1078         {
1079             char *psz_output, ip[NI_MAXNUMERICHOST];
1080             int i_port_audio = 0, i_port_video = 0;
1081
1082             /* for now only multicast so easy */
1083             if( !psz_playnow )
1084             {
1085                 answer->i_status = 200;
1086                 answer->i_body = 0;
1087                 answer->p_body = NULL;
1088             }
1089
1090             if( !psz_session )
1091                 psz_session = httpd_MsgGet( query, "Session" );
1092             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1093
1094             p_rtsp = RtspClientGet( p_media, psz_session );
1095             if( !p_rtsp )
1096             {
1097                 answer->i_status = 500;
1098                 answer->i_body = 0;
1099                 answer->p_body = NULL;
1100                 break;
1101             }
1102
1103             if( p_rtsp->b_playing )
1104             {
1105                 const char *psz_position = httpd_MsgGet( query, "Range" );
1106                 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1107                 if( psz_position )
1108                     psz_position = strstr( psz_position, "npt=" );
1109                 if( psz_position && !psz_scale )
1110                 {
1111                     double f_pos = ParseNPT (psz_position + 4);
1112                     msg_Dbg( p_vod, "seeking request: %s", psz_position );
1113                     f_pos /= ((double)(p_media->i_length)) / CLOCK_FREQ / 100;
1114                     CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1115                                  psz_session, f_pos, NULL );
1116                 }
1117                 else if( psz_scale )
1118                 {
1119                     double f_scale = 0.0;
1120                     char *end;
1121
1122                     f_scale = us_strtod( psz_scale, &end );
1123                     if( end > psz_scale )
1124                     {
1125                         f_scale = (f_scale * 30.0);
1126                         if( psz_scale[0] == '-' ) /* rewind */
1127                         {
1128                             msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1129                             CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
1130                                          psz_session, f_scale, NULL );
1131                         }
1132                         else if(psz_scale[0] != '1' ) /* fast-forward */
1133                         {
1134                             msg_Dbg( p_vod, "fastforward request: %s",
1135                                      psz_scale );
1136                             CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
1137                                          psz_session, f_scale, NULL );
1138                         }
1139
1140                         if( p_rtsp->b_paused )
1141                         {
1142                             p_rtsp->b_paused = false;
1143                             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1144                                          psz_session, 0, NULL );
1145                         }
1146                     }
1147                     break;
1148                 }
1149             }
1150
1151             if( p_rtsp->b_playing && p_rtsp->b_paused )
1152             {
1153                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1154                              psz_session, 0, NULL );
1155                 p_rtsp->b_paused = false;
1156                 break;
1157             }
1158             else if( p_rtsp->b_playing ) break;
1159
1160             if( httpd_ClientIP( cl, ip ) == NULL ) break;
1161
1162             p_rtsp->b_playing = true;
1163
1164             /* FIXME for != 1 video and 1 audio */
1165             for( int i = 0; i < p_rtsp->i_es; i++ )
1166             {
1167                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1168                     i_port_audio = p_rtsp->es[i]->i_port;
1169                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1170                     i_port_video = p_rtsp->es[i]->i_port;
1171             }
1172
1173             if( p_media->psz_mux )
1174             {
1175                 if( p_media->b_raw )
1176                 {
1177                     if( asprintf( &psz_output,
1178                               "std{access=udp,dst=%s:%i,mux=%s}",
1179                               ip, i_port, p_media->psz_mux ) < 0 )
1180                         return VLC_ENOMEM;
1181                 }
1182                 else
1183                 {
1184                     if( asprintf( &psz_output,
1185                               "rtp{dst=%s,port=%i,mux=%s}",
1186                               ip, i_port_video, p_media->psz_mux ) < 0 )
1187                         return VLC_ENOMEM;
1188                 }
1189             }
1190             else
1191             {
1192                 if( asprintf( &psz_output,
1193                               "rtp{dst=%s,port-video=%i,port-audio=%i}",
1194                               ip, i_port_video, i_port_audio ) < 0 )
1195                     return VLC_ENOMEM;
1196             }
1197
1198             CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1199                          0, psz_output );
1200             free( psz_output );
1201             break;
1202         }
1203
1204         case HTTPD_MSG_DESCRIBE:
1205         {
1206             char *psz_sdp =
1207                 SDPGenerate( p_media, cl );
1208
1209             if( psz_sdp != NULL )
1210             {
1211                 answer->i_status = 200;
1212                 httpd_MsgAdd( answer, "Content-type",  "%s",
1213                               "application/sdp" );
1214
1215                 answer->p_body = (uint8_t *)psz_sdp;
1216                 answer->i_body = strlen( psz_sdp );
1217             }
1218             else
1219             {
1220                 answer->i_status = 500;
1221                 answer->p_body = NULL;
1222                 answer->i_body = 0;
1223             }
1224             break;
1225         }
1226
1227         case HTTPD_MSG_PAUSE:
1228             psz_session = httpd_MsgGet( query, "Session" );
1229             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1230
1231             p_rtsp = RtspClientGet( p_media, psz_session );
1232             if( !p_rtsp ) break;
1233
1234             if( !p_rtsp->b_paused )
1235             {
1236                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1237                              0, NULL );
1238                 p_rtsp->b_paused = true;
1239             }
1240
1241             answer->i_status = 200;
1242             answer->i_body = 0;
1243             answer->p_body = NULL;
1244             break;
1245
1246         case HTTPD_MSG_TEARDOWN:
1247             /* for now only multicast so easy again */
1248             answer->i_status = 200;
1249             answer->i_body = 0;
1250             answer->p_body = NULL;
1251
1252             psz_session = httpd_MsgGet( query, "Session" );
1253             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1254
1255             p_rtsp = RtspClientGet( p_media, psz_session );
1256             if( !p_rtsp ) break;
1257
1258             CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1259                          0, NULL );
1260             RtspClientDel( p_media, p_rtsp );
1261             break;
1262
1263         case HTTPD_MSG_GETPARAMETER:
1264             answer->i_status = 200;
1265             answer->i_body = 0;
1266             answer->p_body = NULL;
1267             break;
1268
1269         default:
1270             return VLC_EGENERIC;
1271     }
1272
1273     httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1274     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1275     psz_cseq = httpd_MsgGet( query, "Cseq" );
1276     psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1277     httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1278     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1279
1280     if( psz_session )
1281     {
1282          if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
1283              httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1284                p_media->p_vod->p_sys->i_session_timeout );
1285          else
1286               httpd_MsgAdd( answer, "Session", "%s", psz_session );
1287     }
1288
1289     return VLC_SUCCESS;
1290 }
1291
1292 static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1293                            httpd_message_t *answer,
1294                            const httpd_message_t *query )
1295 {
1296     media_es_t *p_es = (media_es_t*)p_args;
1297     vod_media_t *p_media = p_es->p_media;
1298     vod_t *p_vod = p_media->p_vod;
1299     rtsp_client_t *p_rtsp = NULL;
1300     const char *psz_transport = NULL;
1301     const char *psz_playnow = NULL; /* support option: x-playNow */
1302     const char *psz_session = NULL;
1303     const char *psz_position = NULL;
1304     const char *psz_cseq = NULL;
1305     int i_cseq = 0;
1306
1307     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1308
1309     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1310
1311     answer->i_proto   = HTTPD_PROTO_RTSP;
1312     answer->i_version = query->i_version;
1313     answer->i_type    = HTTPD_MSG_ANSWER;
1314     answer->i_body    = 0;
1315     answer->p_body      = NULL;
1316
1317     switch( query->i_type )
1318     {
1319         case HTTPD_MSG_SETUP:
1320             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1321             psz_transport = httpd_MsgGet( query, "Transport" );
1322
1323             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1324
1325             if( strstr( psz_transport, "unicast" ) &&
1326                 strstr( psz_transport, "client_port=" ) )
1327             {
1328                 rtsp_client_t *p_rtsp = NULL;
1329                 rtsp_client_es_t *p_rtsp_es = NULL;
1330                 char ip[NI_MAXNUMERICHOST];
1331                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
1332                                    strlen("client_port=") );
1333
1334                 if( httpd_ClientIP( cl, ip ) == NULL )
1335                 {
1336                     answer->i_status = 500;
1337                     answer->i_body = 0;
1338                     answer->p_body = NULL;
1339                     break;
1340                 }
1341
1342                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1343                         ip, i_port );
1344
1345                 psz_session = httpd_MsgGet( query, "Session" );
1346                 if( !psz_session || !*psz_session )
1347                 {
1348                     char *psz_new;
1349                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1350                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1351                     {
1352                         answer->i_status = 503;
1353                         answer->i_body = 0;
1354                         answer->p_body = NULL;
1355                         break;
1356                     }
1357 #warning Session ID should be securely random (spoofing risk)
1358                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1359                         return VLC_ENOMEM;
1360                     psz_session = psz_new;
1361
1362                     p_rtsp = RtspClientNew( p_media, psz_new );
1363                     if( !p_rtsp )
1364                     {
1365                         answer->i_status = 454;
1366                         answer->i_body = 0;
1367                         answer->p_body = NULL;
1368                         break;
1369                     }
1370                 }
1371                 else
1372                 {
1373                     p_rtsp = RtspClientGet( p_media, psz_session );
1374                     if( !p_rtsp )
1375                     {
1376                         answer->i_status = 454;
1377                         answer->i_body = 0;
1378                         answer->p_body = NULL;
1379                         break;
1380                     }
1381                 }
1382
1383                 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1384                 if( !p_rtsp_es )
1385                 {
1386                     answer->i_status = 500;
1387                     answer->i_body = 0;
1388                     answer->p_body = NULL;
1389                     break;
1390                 }
1391                 p_rtsp_es->i_port = i_port;
1392                 p_rtsp_es->p_media_es = p_es;
1393                 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1394
1395                 answer->i_status = 200;
1396                 answer->i_body = 0;
1397                 answer->p_body = NULL;
1398
1399                 if( p_media->b_raw )
1400                 {
1401                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1402                     {
1403                         httpd_MsgAdd( answer, "Transport",
1404                                      "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1405                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1406                     }
1407                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1408                     {
1409                         httpd_MsgAdd( answer, "Transport",
1410                                      "RAW/RAW/UDP;unicast;client_port=%d-%d",
1411                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1412                     }
1413                 }
1414                 else
1415                 {
1416                     httpd_MsgAdd( answer, "Transport",
1417                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1418                                   p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1419                 }
1420             }
1421             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1422             {
1423                 answer->i_status = 461;
1424                 answer->i_body = 0;
1425                 answer->p_body = NULL;
1426             }
1427
1428             /* Intentional fall-through on x-playNow option in RTSP request */
1429             if( !psz_playnow )
1430                 break;
1431
1432         case HTTPD_MSG_PLAY:
1433             /* This is kind of a kludge. Should we only support Aggregate
1434              * Operations ? */
1435             psz_session = httpd_MsgGet( query, "Session" );
1436             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1437
1438             p_rtsp = RtspClientGet( p_media, psz_session );
1439
1440             psz_position = httpd_MsgGet( query, "Range" );
1441             if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1442             if( psz_position )
1443             {
1444                 double f_pos = ParseNPT (psz_position + 4);
1445                 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1446                 f_pos /= ((double)(p_media->i_length)) / CLOCK_FREQ / 100;
1447                 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1448                              psz_session, f_pos, NULL );
1449             }
1450
1451             if( !psz_playnow )
1452             {
1453                 answer->i_status = 200;
1454                 answer->i_body = 0;
1455                 answer->p_body = NULL;
1456             }
1457             break;
1458
1459         case HTTPD_MSG_TEARDOWN:
1460             answer->i_status = 200;
1461             answer->i_body = 0;
1462             answer->p_body = NULL;
1463
1464             psz_session = httpd_MsgGet( query, "Session" );
1465             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1466
1467             p_rtsp = RtspClientGet( p_media, psz_session );
1468             if( !p_rtsp ) break;
1469
1470             for( int i = 0; i < p_rtsp->i_es; i++ )
1471             {
1472                 if( p_rtsp->es[i]->p_media_es == p_es )
1473                 {
1474                     TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, p_rtsp->es[i] );
1475                     break;
1476                 }
1477             }
1478
1479             if( !p_rtsp->i_es )
1480             {
1481                 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1482                              0, NULL );
1483                 RtspClientDel( p_media, p_rtsp );
1484             }
1485             break;
1486
1487         case HTTPD_MSG_PAUSE:
1488             /* This is kind of a kludge. Should we only support Aggregate
1489              * Operations ? */
1490             psz_session = httpd_MsgGet( query, "Session" );
1491             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1492
1493             p_rtsp = RtspClientGet( p_media, psz_session );
1494             if( !p_rtsp ) break;
1495
1496             if( !p_rtsp->b_paused )
1497             {
1498                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1499                              0, NULL );
1500                 p_rtsp->b_paused = true;
1501             }
1502
1503             answer->i_status = 200;
1504             answer->i_body = 0;
1505             answer->p_body = NULL;
1506             break;
1507
1508         default:
1509             return VLC_EGENERIC;
1510             break;
1511     }
1512
1513     httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1514     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1515     psz_cseq = httpd_MsgGet( query, "Cseq" );
1516     if (psz_cseq)
1517         i_cseq = atoi( psz_cseq );
1518     else
1519         i_cseq = 0;
1520     httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1521     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1522
1523     if( psz_session )
1524         httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1525
1526     return VLC_SUCCESS;
1527 }
1528
1529 /*****************************************************************************
1530  * SDPGenerate: TODO
1531  * FIXME: need to be moved to a common place ?
1532  *****************************************************************************/
1533 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1534 {
1535     char *psz_sdp, ip[NI_MAXNUMERICHOST];
1536     const char *psz_control;
1537
1538     if( httpd_ServerIP( cl, ip ) == NULL )
1539         return NULL;
1540
1541     bool ipv6 = ( strchr( ip, ':' ) != NULL );
1542
1543     psz_control = ipv6 ? p_media->psz_rtsp_control_v6
1544                        : p_media->psz_rtsp_control_v4;
1545
1546     /* Dummy destination address for RTSP */
1547     struct sockaddr_storage dst;
1548     socklen_t dstlen = ipv6 ? sizeof( struct sockaddr_in6 )
1549                             : sizeof( struct sockaddr_in );
1550     memset (&dst, 0, dstlen);
1551     dst.ss_family = ipv6 ? AF_INET6 : AF_INET;
1552 #ifdef HAVE_SA_LEN
1553     dst.ss_len = dstlen;
1554 #endif
1555
1556     psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_media->p_vod ), "sout-rtp-",
1557                              NULL, 0, (struct sockaddr *)&dst, dstlen );
1558     if( psz_sdp == NULL )
1559         return NULL;
1560
1561     if( p_media->i_length > 0 )
1562     {
1563         lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
1564         sdp_AddAttribute( &psz_sdp, "range"," npt=0-%lld.%03u", d.quot,
1565                           (unsigned)d.rem );
1566     }
1567
1568     for( int i = 0; i < p_media->i_es; i++ )
1569     {
1570         media_es_t *p_es = p_media->es[i];
1571         const char *mime_major; /* major MIME type */
1572
1573         switch( p_es->fmt.i_cat )
1574         {
1575             case VIDEO_ES:
1576                 mime_major = "video";
1577                 break;
1578             case AUDIO_ES:
1579                 mime_major = "audio";
1580                 break;
1581             case SPU_ES:
1582                 mime_major = "text";
1583                 break;
1584             default:
1585                 continue;
1586         }
1587
1588         sdp_AddMedia( &psz_sdp, mime_major, "RTP/AVP", 0 /* p_es->i_port */,
1589                       p_es->i_payload_type, false, 0,
1590                       p_es->psz_ptname, p_es->i_clock_rate, p_es->i_channels,
1591                       p_es->psz_fmtp );
1592
1593         sdp_AddAttribute( &psz_sdp, "control", psz_control, ip, i );
1594     }
1595
1596     return psz_sdp;
1597 }