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

   1 /*****************************************************************************
   2  * rtsp.c: rtsp VoD server module
   3  *****************************************************************************
   4  * Copyright (C) 2003-2006 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   8  *          Gildas Bazin <gbazin@videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32
  33 #include <vlc_common.h>
  34 #include <vlc_plugin.h>
  35 #include <vlc_input.h>
  36 #include <vlc_sout.h>
  37 #include <vlc_block.h>
  38
  39 #include <vlc_httpd.h>
  40 #include <vlc_vod.h>
  41 #include <vlc_url.h>
  42 #include <vlc_network.h>
  43 #include <vlc_charset.h>
  44 #include <vlc_strings.h>
  45 #include <vlc_rand.h>
  46
  47 #ifndef WIN32
  48 # include <locale.h>
  49 #endif
  50
  51 #ifdef HAVE_XLOCALE_H
  52 # include <xlocale.h>
  53 #endif
  54
  55 /*****************************************************************************
  56  * Module descriptor
  57  *****************************************************************************/
  58 static int  Open ( vlc_object_t * );
  59 static void Close( vlc_object_t * );
  60
  61 #define HOST_TEXT N_( "RTSP host address" )
  62 #define HOST_LONGTEXT N_( \
  63     "This defines the address, port and path the RTSP VOD server will listen " \
  64     "on.\nSyntax is address:port/path. The default is to listen on all "\
  65     "interfaces (address 0.0.0.0), on port 554, with no path.\nTo listen " \
  66     "only on the local interface, use \"localhost\" as address." )
  67
  68 #define THROTTLE_TEXT N_( "Maximum number of connections" )
  69 #define THROTTLE_LONGTEXT N_( "This limits the maximum number of clients " \
  70     "that can connect to the RTSP VOD. 0 means no limit."  )
  71
  72 #define RAWMUX_TEXT N_( "MUX for RAW RTSP transport" )
  73
  74 #define SESSION_TIMEOUT_TEXT N_( "Sets the timeout option in the RTSP " \
  75     "session string" )
  76 #define SESSION_TIMEOUT_LONGTEXT N_( "Defines what timeout option to add " \
  77     "to the RTSP session ID string. Setting it to a negative number removes " \
  78     "the timeout option entirely. This is needed by some IPTV STBs (such as " \
  79     "those made by HansunTech) which get confused by it. The default is 5." )
  80
  81 vlc_module_begin ()
  82     set_shortname( N_("RTSP VoD" ) )
  83     set_description( N_("RTSP VoD server") )
  84     set_category( CAT_SOUT )
  85     set_subcategory( SUBCAT_SOUT_VOD )
  86     set_capability( "vod server", 1 )
  87     set_callbacks( Open, Close )
  88     add_shortcut( "rtsp" )
  89     add_string ( "rtsp-host", NULL, NULL, HOST_TEXT, HOST_LONGTEXT, true )
  90     add_string( "rtsp-raw-mux", "ts", NULL, RAWMUX_TEXT,
  91                 RAWMUX_TEXT, true )
  92     add_integer( "rtsp-throttle-users", 0, NULL, THROTTLE_TEXT,
  93                  THROTTLE_LONGTEXT, true )
  94     add_integer( "rtsp-session-timeout", 5, NULL, SESSION_TIMEOUT_TEXT,
  95                  SESSION_TIMEOUT_LONGTEXT, true )
  96 vlc_module_end ()
  97
  98 /*****************************************************************************
  99  * Exported prototypes
 100  *****************************************************************************/
 101
 102 typedef struct media_es_t media_es_t;
 103
 104 typedef struct
 105 {
 106     media_es_t *p_media_es;
 107     int i_port;
 108
 109 } rtsp_client_es_t;
 110
 111 typedef struct
 112 {
 113     char *psz_session;
 114
 115     bool b_playing; /* is it in "play" state */
 116     bool b_paused; /* is it in "pause" state */
 117
 118     int i_es;
 119     rtsp_client_es_t **es;
 120
 121 } rtsp_client_t;
 122
 123 struct media_es_t
 124 {
 125     /* VoD server */
 126     vod_t *p_vod;
 127
 128     /* RTSP server */
 129     httpd_url_t *p_rtsp_url;
 130
 131     vod_media_t *p_media;
 132
 133     es_format_t fmt;
 134     uint8_t     i_payload_type;
 135     const char  *psz_ptname;
 136     unsigned    i_clock_rate;
 137     unsigned    i_channels;
 138     char        *psz_fmtp;
 139
 140 };
 141
 142 struct vod_media_t
 143 {
 144     int id;
 145
 146     /* VoD server */
 147     vod_t *p_vod;
 148
 149     /* RTSP server */
 150     httpd_url_t  *p_rtsp_url;
 151     char         *psz_rtsp_control_v4;
 152     char         *psz_rtsp_control_v6;
 153     char         *psz_rtsp_path;
 154
 155     int  i_payload_type;
 156
 157     vlc_mutex_t lock;
 158
 159     /* ES list */
 160     int        i_es;
 161     media_es_t **es;
 162     const char *psz_mux;
 163     bool  b_raw;
 164
 165     /* RTSP client */
 166     int           i_rtsp;
 167     rtsp_client_t **rtsp;
 168
 169     /* Infos */
 170     mtime_t i_length;
 171 };
 172
 173 struct vod_sys_t
 174 {
 175     /* RTSP server */
 176     httpd_host_t *p_rtsp_host;
 177     char *psz_path;
 178     int i_port;
 179     int i_throttle_users;
 180     int i_connections;
 181
 182     char *psz_raw_mux;
 183
 184     int i_session_timeout;
 185
 186     /* List of media */
 187     vlc_mutex_t lock_media;
 188     int i_media_id;
 189     int i_media;
 190     vod_media_t **media;
 191
 192     /* */
 193     block_fifo_t *p_fifo_cmd;
 194 };
 195
 196 /* rtsp delayed command (to avoid deadlock between vlm/httpd) */
 197 typedef enum
 198 {
 199     RTSP_CMD_TYPE_NONE,  /* Exit requested */
 200
 201     RTSP_CMD_TYPE_PLAY,
 202     RTSP_CMD_TYPE_PAUSE,
 203     RTSP_CMD_TYPE_STOP,
 204     RTSP_CMD_TYPE_SEEK,
 205     RTSP_CMD_TYPE_REWIND,
 206     RTSP_CMD_TYPE_FORWARD,
 207
 208     RTSP_CMD_TYPE_ADD,
 209     RTSP_CMD_TYPE_DEL,
 210 } rtsp_cmd_type_t;
 211
 212 /* */
 213 typedef struct
 214 {
 215     int i_type;
 216     int i_media_id;
 217     vod_media_t *p_media;
 218     char *psz_session;
 219     char *psz_arg;
 220     double f_arg;
 221 } rtsp_cmd_t;
 222
 223 static vod_media_t *MediaNew( vod_t *, const char *, input_item_t * );
 224 static void         MediaDel( vod_t *, vod_media_t * );
 225 static void         MediaAskDel ( 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 = NULL;
 264     char *psz_url = NULL;
 265     vlc_url_t url;
 266
 267     psz_url = var_InheritString( 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 = MediaAskDel;
 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 ) )
 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     block_t *p_block_cmd;
 341     rtsp_cmd_t cmd;
 342
 343     /* Stop command thread */
 344     vlc_object_kill( p_vod );
 345     CommandPush( p_vod, RTSP_CMD_TYPE_NONE, NULL, NULL, 0.0, NULL );
 346     vlc_thread_join( p_vod );
 347
 348     while( block_FifoCount( p_sys->p_fifo_cmd ) > 0 )
 349     {
 350          p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 351          memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 352          block_Release( p_block_cmd );
 353          if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 354              MediaDel(p_vod, cmd.p_media);
 355          free( cmd.psz_session );
 356          free( cmd.psz_arg );
 357     }
 358     block_FifoRelease( p_sys->p_fifo_cmd );
 359
 360     httpd_HostDelete( p_sys->p_rtsp_host );
 361     var_Destroy( p_this, "rtsp-session-timeout" );
 362     var_Destroy( p_this, "rtsp-throttle-users" );
 363     var_Destroy( p_this, "rtsp-raw-mux" );
 364
 365     /* Check VLM is not buggy */
 366     if( p_sys->i_media > 0 )
 367         msg_Err( p_vod, "rtsp vod leaking %d medias", p_sys->i_media );
 368     TAB_CLEAN( p_sys->i_media, p_sys->media );
 369
 370     vlc_mutex_destroy( &p_sys->lock_media );
 371
 372     free( p_sys->psz_path );
 373     free( p_sys->psz_raw_mux );
 374     free( p_sys );
 375 }
 376
 377 /*****************************************************************************
 378  * Media handling
 379  *****************************************************************************/
 380 static vod_media_t *MediaNew( vod_t *p_vod, const char *psz_name,
 381                               input_item_t *p_item )
 382 {
 383     int i;
 384     vod_sys_t *p_sys = p_vod->p_sys;
 385
 386     vod_media_t *p_media = calloc( 1, sizeof(vod_media_t) );
 387     if( !p_media )
 388         return NULL;
 389
 390     p_media->id = p_sys->i_media_id++;
 391     TAB_INIT( p_media->i_es, p_media->es );
 392     p_media->psz_mux = NULL;
 393     TAB_INIT( p_media->i_rtsp, p_media->rtsp );
 394     p_media->b_raw = false;
 395
 396     if( asprintf( &p_media->psz_rtsp_path, "%s%s",
 397                   p_sys->psz_path, psz_name ) <0 )
 398         return NULL;
 399     p_media->p_rtsp_url =
 400         httpd_UrlNewUnique( p_sys->p_rtsp_host, p_media->psz_rtsp_path, NULL,
 401                             NULL, NULL );
 402
 403     if( !p_media->p_rtsp_url )
 404     {
 405         msg_Err( p_vod, "cannot create RTSP url (%s)", p_media->psz_rtsp_path);
 406         free( p_media->psz_rtsp_path );
 407         free( p_media );
 408         return NULL;
 409     }
 410
 411     msg_Dbg( p_vod, "created RTSP url: %s", p_media->psz_rtsp_path );
 412
 413     if( asprintf( &p_media->psz_rtsp_control_v4,
 414                "rtsp://%%s:%d%s/trackID=%%d",
 415                p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 416     {
 417         httpd_UrlDelete( p_media->p_rtsp_url );
 418         free( p_media->psz_rtsp_path );
 419         free( p_media );
 420         return NULL;
 421     }
 422     if( asprintf( &p_media->psz_rtsp_control_v6,
 423                "rtsp://[%%s]:%d%s/trackID=%%d",
 424               p_sys->i_port, p_media->psz_rtsp_path ) < 0 )
 425     {
 426         httpd_UrlDelete( p_media->p_rtsp_url );
 427         free( p_media->psz_rtsp_path );
 428         free( p_media );
 429         return NULL;
 430     }
 431
 432     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_SETUP,
 433                     RtspCallback, (void*)p_media );
 434     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_DESCRIBE,
 435                     RtspCallback, (void*)p_media );
 436     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PLAY,
 437                     RtspCallback, (void*)p_media );
 438     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PAUSE,
 439                     RtspCallback, (void*)p_media );
 440     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_GETPARAMETER,
 441                     RtspCallback, (void*)p_media );
 442     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 443                     RtspCallback, (void*)p_media );
 444
 445     p_media->p_vod = p_vod;
 446
 447     vlc_mutex_init( &p_media->lock );
 448
 449     p_media->i_payload_type = 96;
 450
 451     p_media->i_length = input_item_GetDuration( p_item );
 452
 453     vlc_mutex_lock( &p_item->lock );
 454     msg_Dbg( p_vod, "media has %i declared ES", p_item->i_es );
 455     for( i = 0; i < p_item->i_es; i++ )
 456     {
 457         MediaAddES( p_vod, p_media, p_item->es[i] );
 458     }
 459     vlc_mutex_unlock( &p_item->lock );
 460
 461     CommandPush( p_vod, RTSP_CMD_TYPE_ADD, p_media, NULL, 0.0, NULL );
 462     return p_media;
 463 }
 464
 465 static void MediaAskDel ( vod_t *p_vod, vod_media_t *p_media )
 466 {
 467     CommandPush( p_vod, RTSP_CMD_TYPE_DEL, p_media, NULL, 0.0, NULL );
 468 }
 469
 470 static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
 471 {
 472     vod_sys_t *p_sys = p_vod->p_sys;
 473
 474     msg_Dbg( p_vod, "deleting media: %s", p_media->psz_rtsp_path );
 475
 476     vlc_mutex_lock( &p_sys->lock_media );
 477     TAB_REMOVE( p_sys->i_media, p_sys->media, p_media );
 478     vlc_mutex_unlock( &p_sys->lock_media );
 479
 480     httpd_UrlDelete( p_media->p_rtsp_url );
 481
 482     while( p_media->i_rtsp > 0 )
 483         RtspClientDel( p_media, p_media->rtsp[0] );
 484     TAB_CLEAN( p_media->i_rtsp, p_media->rtsp );
 485
 486     free( p_media->psz_rtsp_path );
 487     free( p_media->psz_rtsp_control_v6 );
 488     free( p_media->psz_rtsp_control_v4 );
 489
 490     while( p_media->i_es )
 491         MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );
 492     TAB_CLEAN( p_media->i_es, p_media->es );
 493
 494     vlc_mutex_destroy( &p_media->lock );
 495
 496     free( p_media );
 497 }
 498
 499 static int MediaAddES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt )
 500 {
 501     char *psz_urlc;
 502     media_es_t *p_es = calloc( 1, sizeof(media_es_t) );
 503     if( !p_es )
 504         return VLC_ENOMEM;
 505
 506     p_media->psz_mux = NULL;
 507
 508     /* TODO: update SDP, etc... */
 509     if( asprintf( &psz_urlc, "%s/trackID=%d",
 510               p_media->psz_rtsp_path, p_media->i_es ) < 0 )
 511     {
 512         free( p_es );
 513         return VLC_ENOMEM;
 514     }
 515     msg_Dbg( p_vod, "  - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
 516
 517     p_es->i_clock_rate = 90000;
 518     p_es->i_channels = 1;
 519
 520     switch( p_fmt->i_codec )
 521     {
 522         case VLC_CODEC_S16B:
 523             if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
 524             {
 525                 p_es->i_payload_type = 11;
 526             }
 527             else if( p_fmt->audio.i_channels == 2 &&
 528                      p_fmt->audio.i_rate == 44100 )
 529             {
 530                 p_es->i_payload_type = 10;
 531             }
 532             else
 533             {
 534                 p_es->i_payload_type = p_media->i_payload_type++;
 535             }
 536             p_es->psz_ptname = "L16";
 537             p_es->i_clock_rate = p_fmt->audio.i_rate;
 538             p_es->i_channels = p_fmt->audio.i_channels;
 539             break;
 540         case VLC_CODEC_U8:
 541             p_es->i_payload_type = p_media->i_payload_type++;
 542             p_es->psz_ptname = "L8";
 543             p_es->i_clock_rate = p_fmt->audio.i_rate;
 544             p_es->i_channels = p_fmt->audio.i_channels;
 545             break;
 546         case VLC_CODEC_MPGA:
 547             p_es->i_payload_type = 14;
 548             p_es->psz_ptname = "MPA";
 549             break;
 550         case VLC_CODEC_MPGV:
 551             p_es->i_payload_type = 32;
 552             p_es->psz_ptname = "MPV";
 553             break;
 554         case VLC_CODEC_A52:
 555             p_es->i_payload_type = p_media->i_payload_type++;
 556             p_es->psz_ptname = "ac3";
 557             p_es->i_clock_rate = p_fmt->audio.i_rate;
 558             break;
 559         case VLC_CODEC_H263:
 560             p_es->i_payload_type = p_media->i_payload_type++;
 561             p_es->psz_ptname = "H263-1998";
 562             break;
 563         case VLC_CODEC_H264:
 564             p_es->i_payload_type = p_media->i_payload_type++;
 565             p_es->psz_ptname = "H264";
 566             p_es->psz_fmtp = NULL;
 567             /* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
 568             if( p_fmt->i_extra > 0 )
 569             {
 570                 uint8_t *p_buffer = p_fmt->p_extra;
 571                 int     i_buffer = p_fmt->i_extra;
 572                 char    *p_64_sps = NULL;
 573                 char    *p_64_pps = NULL;
 574                 char    hexa[6+1];
 575
 576                 while( i_buffer > 4 &&
 577                        p_buffer[0] == 0 && p_buffer[1] == 0 &&
 578                        p_buffer[2] == 0 && p_buffer[3] == 1 )
 579                 {
 580                     const int i_nal_type = p_buffer[4]&0x1f;
 581                     int i_offset;
 582                     int i_size      = 0;
 583
 584                     i_size = i_buffer;
 585                     for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
 586                     {
 587                         if( p_buffer[i_offset] == 0 && p_buffer[i_offset+1] == 0 && p_buffer[i_offset+2] == 0 && p_buffer[i_offset+3] == 1 )
 588                         {
 589                             /* we found another startcode */
 590                             i_size = i_offset;
 591                             break;
 592                         }
 593                     }
 594                     if( i_nal_type == 7 )
 595                     {
 596                         free( p_64_sps );
 597                         p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 598                         sprintf_hexa( hexa, &p_buffer[5], 3 );
 599                     }
 600                     else if( i_nal_type == 8 )
 601                     {
 602                         free( p_64_pps );
 603                         p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 604                     }
 605                     i_buffer -= i_size;
 606                     p_buffer += i_size;
 607                 }
 608                 /* */
 609                 if( p_64_sps && p_64_pps )
 610                 {
 611                     if( asprintf( &p_es->psz_fmtp,
 612                                   "packetization-mode=1;profile-level-id=%s;"
 613                                   "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
 614                                   p_64_pps ) < 0 )
 615                     {
 616                         free( p_64_sps );
 617                         free( p_64_pps );
 618                         free( psz_urlc );
 619                         free( p_es );
 620                         return VLC_ENOMEM;
 621                     }
 622                 }
 623                 free( p_64_sps );
 624                 free( p_64_pps );
 625             }
 626             if( !p_es->psz_fmtp )
 627                 p_es->psz_fmtp = strdup( "packetization-mode=1" );
 628             break;
 629         case VLC_CODEC_MP4V:
 630             p_es->i_payload_type = p_media->i_payload_type++;
 631             p_es->psz_ptname = "MP4V-ES";
 632             if( p_fmt->i_extra > 0 )
 633             {
 634                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 635                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 636                 if( asprintf( &p_es->psz_fmtp,
 637                               "profile-level-id=3; config=%s;", p_hexa ) == -1 )
 638                     p_es->psz_fmtp = NULL;
 639                 free( p_hexa );
 640             }
 641             break;
 642         case VLC_CODEC_MP4A:
 643             p_es->i_payload_type = p_media->i_payload_type++;
 644             p_es->psz_ptname = "mpeg4-generic";
 645             p_es->i_clock_rate = p_fmt->audio.i_rate;
 646             if( p_fmt->i_extra > 0 )
 647             {
 648                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 649                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 650                 if( asprintf( &p_es->psz_fmtp,
 651                               "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
 652                               "config=%s; SizeLength=13;IndexLength=3; "
 653                               "IndexDeltaLength=3; Profile=1;", p_hexa ) == -1 )
 654                     p_es->psz_fmtp = NULL;
 655                 free( p_hexa );
 656             }
 657             break;
 658         case VLC_FOURCC( 'm', 'p', '2', 't' ):
 659             p_media->psz_mux = "ts";
 660             p_es->i_payload_type = 33;
 661             p_es->psz_ptname = "MP2T";
 662             break;
 663         case VLC_FOURCC( 'm', 'p', '2', 'p' ):
 664             p_media->psz_mux = "ps";
 665             p_es->i_payload_type = p_media->i_payload_type++;
 666             p_es->psz_ptname = "MP2P";
 667             break;
 668         case VLC_CODEC_AMR_NB:
 669             p_es->i_payload_type = p_media->i_payload_type++;
 670             p_es->psz_ptname = "AMR";
 671             p_es->i_clock_rate = 8000;
 672             if(p_fmt->audio.i_channels == 2 )
 673                 p_es->i_channels = 2;
 674             p_es->psz_fmtp = strdup( "octet-align=1" );
 675             break;
 676         case VLC_CODEC_AMR_WB:
 677             p_es->i_payload_type = p_media->i_payload_type++;
 678             p_es->psz_ptname = "AMR-WB";
 679             p_es->i_clock_rate = 16000;
 680             if(p_fmt->audio.i_channels == 2 )
 681                 p_es->i_channels = 2;
 682             p_es->psz_fmtp = strdup( "octet-align=1" );
 683             break;
 684
 685         default:
 686             msg_Err( p_vod, "cannot add this stream (unsupported "
 687                     "codec: %4.4s)", (char*)&p_fmt->i_codec );
 688             free( psz_urlc );
 689             free( p_es );
 690             return VLC_EGENERIC;
 691     }
 692
 693     p_es->p_rtsp_url =
 694         httpd_UrlNewUnique( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL,
 695                             NULL );
 696
 697     if( !p_es->p_rtsp_url )
 698     {
 699         msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
 700         free( psz_urlc );
 701         free( p_es );
 702         return VLC_EGENERIC;
 703     }
 704     free( psz_urlc );
 705
 706     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
 707                     RtspCallbackES, (void*)p_es );
 708     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 709                     RtspCallbackES, (void*)p_es );
 710     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
 711                     RtspCallbackES, (void*)p_es );
 712     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
 713                     RtspCallbackES, (void*)p_es );
 714
 715     es_format_Copy( &p_es->fmt, p_fmt );
 716     p_es->p_vod = p_vod;
 717     p_es->p_media = p_media;
 718
 719     vlc_mutex_lock( &p_media->lock );
 720     TAB_APPEND( p_media->i_es, p_media->es, p_es );
 721     vlc_mutex_unlock( &p_media->lock );
 722
 723     return VLC_SUCCESS;
 724 }
 725
 726 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
 727 {
 728     media_es_t *p_es = NULL;
 729     int i;
 730
 731     /* Find the ES */
 732     for( i = 0; i < p_media->i_es; i++ )
 733     {
 734         if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
 735             p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
 736             p_media->es[i]->fmt.i_id == p_fmt->i_id )
 737         {
 738             p_es = p_media->es[i];
 739         }
 740     }
 741     if( !p_es ) return;
 742
 743     msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );
 744
 745     vlc_mutex_lock( &p_media->lock );
 746     TAB_REMOVE( p_media->i_es, p_media->es, p_es );
 747     vlc_mutex_unlock( &p_media->lock );
 748
 749     free( p_es->psz_fmtp );
 750
 751     if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
 752     es_format_Clean( &p_es->fmt );
 753     free( p_es );
 754 }
 755
 756 static void CommandPush( vod_t *p_vod, rtsp_cmd_type_t i_type, vod_media_t *p_media, const char *psz_session,
 757                          double f_arg, const char *psz_arg )
 758 {
 759     rtsp_cmd_t cmd;
 760     block_t *p_cmd;
 761
 762     memset( &cmd, 0, sizeof(cmd) );
 763     cmd.i_type = i_type;
 764     cmd.p_media = p_media;
 765     if( p_media )
 766         cmd.i_media_id = p_media->id;
 767     if( psz_session )
 768         cmd.psz_session = strdup(psz_session);
 769     cmd.f_arg = f_arg;
 770     if( psz_arg )
 771         cmd.psz_arg = strdup(psz_arg);
 772
 773     p_cmd = block_New( p_vod, sizeof(rtsp_cmd_t) );
 774     memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
 775
 776     block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
 777 }
 778
 779 static void* CommandThread( vlc_object_t *p_this )
 780 {
 781     vod_t *p_vod = (vod_t*)p_this;
 782     vod_sys_t *p_sys = p_vod->p_sys;
 783     int canc = vlc_savecancel ();
 784
 785     while( vlc_object_alive (p_vod) )
 786     {
 787         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 788         rtsp_cmd_t cmd;
 789         vod_media_t *p_media = NULL;
 790         int i;
 791
 792         if( !p_block_cmd )
 793             break;
 794
 795         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 796         block_Release( p_block_cmd );
 797
 798         if( cmd.i_type == RTSP_CMD_TYPE_NONE )
 799             break;
 800
 801         if ( cmd.i_type == RTSP_CMD_TYPE_ADD )
 802         {
 803             vlc_mutex_lock( &p_sys->lock_media );
 804             TAB_APPEND( p_sys->i_media, p_sys->media, cmd.p_media );
 805             vlc_mutex_unlock( &p_sys->lock_media );
 806             goto next;
 807         }
 808
 809         if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 810         {
 811             MediaDel(p_vod, cmd.p_media);
 812             goto next;
 813         }
 814
 815         /* */
 816         vlc_mutex_lock( &p_sys->lock_media );
 817         for( i = 0; i < p_sys->i_media; i++ )
 818         {
 819             if( p_sys->media[i]->id == cmd.i_media_id )
 820                 break;
 821         }
 822         if( i >= p_sys->i_media )
 823         {
 824             vlc_mutex_unlock( &p_sys->lock_media );
 825             goto next;
 826         }
 827         p_media = p_sys->media[i];
 828
 829         switch( cmd.i_type )
 830         {
 831         case RTSP_CMD_TYPE_PLAY:
 832             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 833                               VOD_MEDIA_PLAY, cmd.psz_arg );
 834             break;
 835         case RTSP_CMD_TYPE_PAUSE:
 836             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 837                               VOD_MEDIA_PAUSE );
 838             break;
 839
 840         case RTSP_CMD_TYPE_STOP:
 841             vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
 842             break;
 843
 844         case RTSP_CMD_TYPE_SEEK:
 845             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 846                               VOD_MEDIA_SEEK, cmd.f_arg );
 847             break;
 848
 849         case RTSP_CMD_TYPE_REWIND:
 850             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 851                               VOD_MEDIA_REWIND, cmd.f_arg );
 852             break;
 853
 854         case RTSP_CMD_TYPE_FORWARD:
 855             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 856                               VOD_MEDIA_FORWARD, cmd.f_arg );
 857             break;
 858
 859         default:
 860             break;
 861         }
 862         vlc_mutex_unlock( &p_sys->lock_media );
 863
 864     next:
 865         free( cmd.psz_session );
 866         free( cmd.psz_arg );
 867     }
 868
 869     vlc_restorecancel (canc);
 870     return NULL;
 871 }
 872
 873 /****************************************************************************
 874  * RTSP server implementation
 875  ****************************************************************************/
 876 static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
 877 {
 878     rtsp_client_t *p_rtsp = calloc( 1, sizeof(rtsp_client_t) );
 879
 880     if( !p_rtsp )
 881         return NULL;
 882     p_rtsp->es = 0;
 883
 884     p_rtsp->psz_session = psz_session;
 885     TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 886
 887     p_media->p_vod->p_sys->i_connections++;
 888     msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
 889              psz_session, p_media->p_vod->p_sys->i_throttle_users );
 890
 891     return p_rtsp;
 892 }
 893
 894 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
 895 {
 896     int i;
 897
 898     for( i = 0; psz_session && i < p_media->i_rtsp; i++ )
 899     {
 900         if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
 901             return p_media->rtsp[i];
 902     }
 903
 904     return NULL;
 905 }
 906
 907 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
 908 {
 909     p_media->p_vod->p_sys->i_connections--;
 910     msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
 911              p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
 912
 913     while( p_rtsp->i_es )
 914     {
 915         p_rtsp->i_es--;
 916         free( p_rtsp->es[p_rtsp->i_es] );
 917     }
 918     free( p_rtsp->es );
 919
 920     TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 921
 922     free( p_rtsp->psz_session );
 923     free( p_rtsp );
 924 }
 925
 926
 927 static float ParseNPT (const char *str)
 928 {
 929      locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
 930      locale_t oldloc = uselocale (loc);
 931      unsigned hour, min;
 932      float sec;
 933
 934      if (sscanf (str, "%u:%u:%f", &hour, &min, &sec) == 3)
 935          sec += ((hour * 60) + min) * 60;
 936      else
 937      if (sscanf (str, "%f", &sec) != 1)
 938          sec = 0.;
 939
 940      if (loc != (locale_t)0)
 941      {
 942          uselocale (oldloc);
 943          freelocale (loc);
 944      }
 945      return sec;
 946 }
 947
 948
 949 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
 950                          httpd_message_t *answer, const httpd_message_t *query )
 951 {
 952     vod_media_t *p_media = (vod_media_t*)p_args;
 953     vod_t *p_vod = p_media->p_vod;
 954     const char *psz_transport = NULL;
 955     const char *psz_playnow = NULL; /* support option: x-playNow */
 956     const char *psz_session = NULL;
 957     const char *psz_cseq = NULL;
 958     rtsp_client_t *p_rtsp;
 959     int i_port = 0;
 960     int i_cseq = 0;
 961
 962     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
 963
 964     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
 965
 966     answer->i_proto   = HTTPD_PROTO_RTSP;
 967     answer->i_version = query->i_version;
 968     answer->i_type    = HTTPD_MSG_ANSWER;
 969     answer->i_body    = 0;
 970     answer->p_body    = NULL;
 971
 972     switch( query->i_type )
 973     {
 974         case HTTPD_MSG_SETUP:
 975         {
 976             psz_playnow = httpd_MsgGet( query, "x-playNow" );
 977             psz_transport = httpd_MsgGet( query, "Transport" );
 978             if( psz_transport == NULL )
 979             {
 980                 answer->i_status = 400;
 981                 break;
 982             }
 983             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
 984
 985             if( strstr( psz_transport, "unicast" ) &&
 986                 strstr( psz_transport, "client_port=" ) )
 987             {
 988                 rtsp_client_t *p_rtsp = NULL;
 989                 char ip[NI_MAXNUMERICHOST];
 990                 i_port = atoi( strstr( psz_transport, "client_port=" ) +
 991                                 strlen("client_port=") );
 992
 993                 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
 994                     strstr( psz_transport, "RAW/RAW/UDP" ) )
 995                 {
 996                     p_media->psz_mux = p_vod->p_sys->psz_raw_mux;
 997                     p_media->b_raw = true;
 998                 }
 999
1000                 if( httpd_ClientIP( cl, ip ) == NULL )
1001                 {
1002                     answer->i_status = 500;
1003                     answer->i_body = 0;
1004                     answer->p_body = NULL;
1005                     break;
1006                 }
1007
1008                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1009                          ip, i_port );
1010
1011                 psz_session = httpd_MsgGet( query, "Session" );
1012                 if( !psz_session || !*psz_session )
1013                 {
1014                     char *psz_new;
1015                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1016                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1017                     {
1018                         answer->i_status = 503;
1019                         answer->i_body = 0;
1020                         answer->p_body = NULL;
1021                         break;
1022                     }
1023 #warning Should use secure randomness here! (spoofing risk)
1024                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1025                         return VLC_ENOMEM;
1026                     psz_session = psz_new;
1027
1028                     p_rtsp = RtspClientNew( p_media, psz_new );
1029                     if( !p_rtsp )
1030                     {
1031                         answer->i_status = 454;
1032                         answer->i_body = 0;
1033                         answer->p_body = NULL;
1034                         break;
1035                     }
1036                 }
1037                 else
1038                 {
1039                     p_rtsp = RtspClientGet( p_media, psz_session );
1040                     if( !p_rtsp )
1041                     {
1042                         answer->i_status = 454;
1043                         answer->i_body = 0;
1044                         answer->p_body = NULL;
1045                         break;
1046                     }
1047                 }
1048
1049                 answer->i_status = 200;
1050                 answer->i_body = 0;
1051                 answer->p_body = NULL;
1052
1053                 if( p_media->b_raw )
1054                 {
1055                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1056                     {
1057                         httpd_MsgAdd( answer, "Transport",
1058                                       "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1059                                       i_port, i_port + 1 );
1060                     }
1061                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1062                     {
1063                         httpd_MsgAdd( answer, "Transport",
1064                                       "RAW/RAW/UDP;unicast;client_port=%d-%d",
1065                                       i_port, i_port + 1 );
1066                     }
1067                 }
1068                 else
1069                     httpd_MsgAdd( answer, "Transport",
1070                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1071                                   i_port, i_port + 1 );
1072             }
1073             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1074             {
1075                 answer->i_status = 461;
1076                 answer->i_body = 0;
1077                 answer->p_body = NULL;
1078             }
1079
1080             /* Intentional fall-through on x-playNow option in RTSP request */
1081             if( !psz_playnow )
1082                 break;
1083         }
1084
1085         case HTTPD_MSG_PLAY:
1086         {
1087             char *psz_output, ip[NI_MAXNUMERICHOST];
1088             int i, i_port_audio = 0, i_port_video = 0;
1089
1090             /* for now only multicast so easy */
1091             if( !psz_playnow )
1092             {
1093                 answer->i_status = 200;
1094                 answer->i_body = 0;
1095                 answer->p_body = NULL;
1096             }
1097
1098             if( !psz_session )
1099                 psz_session = httpd_MsgGet( query, "Session" );
1100             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1101
1102             p_rtsp = RtspClientGet( p_media, psz_session );
1103             if( !p_rtsp )
1104             {
1105                 answer->i_status = 500;
1106                 answer->i_body = 0;
1107                 answer->p_body = NULL;
1108                 break;
1109             }
1110
1111             if( p_rtsp->b_playing )
1112             {
1113                 const char *psz_position = httpd_MsgGet( query, "Range" );
1114                 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1115                 if( psz_position )
1116                     psz_position = strstr( psz_position, "npt=" );
1117                 if( psz_position && !psz_scale )
1118                 {
1119                     double f_pos = ParseNPT (psz_position + 4);
1120                     msg_Dbg( p_vod, "seeking request: %s", psz_position );
1121                     f_pos /= ((double)(p_media->i_length))/1000 /1000 / 100;
1122                     CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1123                                  psz_session, f_pos, NULL );
1124                 }
1125                 else if( psz_scale )
1126                 {
1127                     double f_scale = 0.0;
1128                     char *end;
1129
1130                     f_scale = us_strtod( psz_scale, &end );
1131                     if( end > psz_scale )
1132                     {
1133                         f_scale = (f_scale * 30.0);
1134                         if( psz_scale[0] == '-' ) /* rewind */
1135                         {
1136                             msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1137                             CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
1138                                          psz_session, f_scale, NULL );
1139                         }
1140                         else if(psz_scale[0] != '1' ) /* fast-forward */
1141                         {
1142                             msg_Dbg( p_vod, "fastforward request: %s",
1143                                      psz_scale );
1144                             CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
1145                                          psz_session, f_scale, NULL );
1146                         }
1147
1148                         if( p_rtsp->b_paused )
1149                         {
1150                             p_rtsp->b_paused = false;
1151                             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1152                                          psz_session, 0, NULL );
1153                         }
1154                     }
1155                     break;
1156                 }
1157             }
1158
1159             if( p_rtsp->b_playing && p_rtsp->b_paused )
1160             {
1161                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media,
1162                              psz_session, 0, NULL );
1163                 p_rtsp->b_paused = false;
1164                 break;
1165             }
1166             else if( p_rtsp->b_playing ) break;
1167
1168             if( httpd_ClientIP( cl, ip ) == NULL ) break;
1169
1170             p_rtsp->b_playing = true;
1171
1172             /* FIXME for != 1 video and 1 audio */
1173             for( i = 0; i < p_rtsp->i_es; i++ )
1174             {
1175                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1176                     i_port_audio = p_rtsp->es[i]->i_port;
1177                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1178                     i_port_video = p_rtsp->es[i]->i_port;
1179             }
1180
1181             if( p_media->psz_mux )
1182             {
1183                 if( p_media->b_raw )
1184                 {
1185                     if( asprintf( &psz_output,
1186                               "std{access=udp,dst=%s:%i,mux=%s}",
1187                               ip, i_port, p_media->psz_mux ) < 0 )
1188                         return VLC_ENOMEM;
1189                 }
1190                 else
1191                 {
1192                     if( asprintf( &psz_output,
1193                               "rtp{dst=%s,port=%i,mux=%s}",
1194                               ip, i_port_video, p_media->psz_mux ) < 0 )
1195                         return VLC_ENOMEM;
1196                 }
1197             }
1198             else
1199             {
1200                 if( asprintf( &psz_output,
1201                               "rtp{dst=%s,port-video=%i,port-audio=%i}",
1202                               ip, i_port_video, i_port_audio ) < 0 )
1203                     return VLC_ENOMEM;
1204             }
1205
1206             CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1207                          0, psz_output );
1208             free( psz_output );
1209             break;
1210         }
1211
1212         case HTTPD_MSG_DESCRIBE:
1213         {
1214             char *psz_sdp =
1215                 SDPGenerate( p_media, cl );
1216
1217             if( psz_sdp != NULL )
1218             {
1219                 answer->i_status = 200;
1220                 httpd_MsgAdd( answer, "Content-type",  "%s",
1221                               "application/sdp" );
1222
1223                 answer->p_body = (uint8_t *)psz_sdp;
1224                 answer->i_body = strlen( psz_sdp );
1225             }
1226             else
1227             {
1228                 answer->i_status = 500;
1229                 answer->p_body = NULL;
1230                 answer->i_body = 0;
1231             }
1232             break;
1233         }
1234
1235         case HTTPD_MSG_PAUSE:
1236             psz_session = httpd_MsgGet( query, "Session" );
1237             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1238
1239             p_rtsp = RtspClientGet( p_media, psz_session );
1240             if( !p_rtsp ) break;
1241
1242             if( !p_rtsp->b_paused )
1243             {
1244                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1245                              0, NULL );
1246                 p_rtsp->b_paused = true;
1247             }
1248
1249             answer->i_status = 200;
1250             answer->i_body = 0;
1251             answer->p_body = NULL;
1252             break;
1253
1254         case HTTPD_MSG_TEARDOWN:
1255             /* for now only multicast so easy again */
1256             answer->i_status = 200;
1257             answer->i_body = 0;
1258             answer->p_body = NULL;
1259
1260             psz_session = httpd_MsgGet( query, "Session" );
1261             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1262
1263             p_rtsp = RtspClientGet( p_media, psz_session );
1264             if( !p_rtsp ) break;
1265
1266             CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1267                          0, NULL );
1268             RtspClientDel( p_media, p_rtsp );
1269             break;
1270
1271         case HTTPD_MSG_GETPARAMETER:
1272             answer->i_status = 200;
1273             answer->i_body = 0;
1274             answer->p_body = NULL;
1275             break;
1276
1277         default:
1278             return VLC_EGENERIC;
1279     }
1280
1281     httpd_MsgAdd( answer, "Server", "VLC Server" );
1282     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1283     psz_cseq = httpd_MsgGet( query, "Cseq" );
1284     psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1285     httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1286     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1287
1288     if( psz_session )
1289     {
1290          if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
1291              httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1292                p_media->p_vod->p_sys->i_session_timeout );
1293          else
1294               httpd_MsgAdd( answer, "Session", "%s", psz_session );
1295     }
1296
1297     return VLC_SUCCESS;
1298 }
1299
1300 static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1301                            httpd_message_t *answer,
1302                            const httpd_message_t *query )
1303 {
1304     media_es_t *p_es = (media_es_t*)p_args;
1305     vod_media_t *p_media = p_es->p_media;
1306     vod_t *p_vod = p_media->p_vod;
1307     rtsp_client_t *p_rtsp = NULL;
1308     const char *psz_transport = NULL;
1309     const char *psz_playnow = NULL; /* support option: x-playNow */
1310     const char *psz_session = NULL;
1311     const char *psz_position = NULL;
1312     const char *psz_cseq = NULL;
1313     int i_cseq = 0;
1314     int i;
1315
1316     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1317
1318     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1319
1320     answer->i_proto   = HTTPD_PROTO_RTSP;
1321     answer->i_version = query->i_version;
1322     answer->i_type    = HTTPD_MSG_ANSWER;
1323     answer->i_body    = 0;
1324     answer->p_body      = NULL;
1325
1326     switch( query->i_type )
1327     {
1328         case HTTPD_MSG_SETUP:
1329             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1330             psz_transport = httpd_MsgGet( query, "Transport" );
1331
1332             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1333
1334             if( strstr( psz_transport, "unicast" ) &&
1335                 strstr( psz_transport, "client_port=" ) )
1336             {
1337                 rtsp_client_t *p_rtsp = NULL;
1338                 rtsp_client_es_t *p_rtsp_es = NULL;
1339                 char ip[NI_MAXNUMERICHOST];
1340                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
1341                                    strlen("client_port=") );
1342
1343                 if( httpd_ClientIP( cl, ip ) == NULL )
1344                 {
1345                     answer->i_status = 500;
1346                     answer->i_body = 0;
1347                     answer->p_body = NULL;
1348                     break;
1349                 }
1350
1351                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1352                         ip, i_port );
1353
1354                 psz_session = httpd_MsgGet( query, "Session" );
1355                 if( !psz_session || !*psz_session )
1356                 {
1357                     char *psz_new;
1358                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1359                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1360                     {
1361                         answer->i_status = 503;
1362                         answer->i_body = 0;
1363                         answer->p_body = NULL;
1364                         break;
1365                     }
1366 #warning Session ID should be securely random (spoofing risk)
1367                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1368                         return VLC_ENOMEM;
1369                     psz_session = psz_new;
1370
1371                     p_rtsp = RtspClientNew( p_media, psz_new );
1372                     if( !p_rtsp )
1373                     {
1374                         answer->i_status = 454;
1375                         answer->i_body = 0;
1376                         answer->p_body = NULL;
1377                         break;
1378                     }
1379                 }
1380                 else
1381                 {
1382                     p_rtsp = RtspClientGet( p_media, psz_session );
1383                     if( !p_rtsp )
1384                     {
1385                         answer->i_status = 454;
1386                         answer->i_body = 0;
1387                         answer->p_body = NULL;
1388                         break;
1389                     }
1390                 }
1391
1392                 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1393                 if( !p_rtsp_es )
1394                 {
1395                     answer->i_status = 500;
1396                     answer->i_body = 0;
1397                     answer->p_body = NULL;
1398                     break;
1399                 }
1400                 p_rtsp_es->i_port = i_port;
1401                 p_rtsp_es->p_media_es = p_es;
1402                 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1403
1404                 answer->i_status = 200;
1405                 answer->i_body = 0;
1406                 answer->p_body = NULL;
1407
1408                 if( p_media->b_raw )
1409                 {
1410                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1411                     {
1412                         httpd_MsgAdd( answer, "Transport",
1413                                      "MP2T/H2221/UDP;client_port=%d-%d",
1414                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1415                     }
1416                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1417                     {
1418                         httpd_MsgAdd( answer, "Transport",
1419                                      "RAW/RAW/UDP;client_port=%d-%d",
1420                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1421                     }
1422                 }
1423                 else
1424                 {
1425                     httpd_MsgAdd( answer, "Transport",
1426                                   "RTP/AVP/UDP;client_port=%d-%d",
1427                                   p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1428                 }
1429             }
1430             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1431             {
1432                 answer->i_status = 461;
1433                 answer->i_body = 0;
1434                 answer->p_body = NULL;
1435             }
1436
1437             /* Intentional fall-through on x-playNow option in RTSP request */
1438             if( !psz_playnow )
1439                 break;
1440
1441         case HTTPD_MSG_PLAY:
1442             /* This is kind of a kludge. Should we only support Aggregate
1443              * Operations ? */
1444             psz_session = httpd_MsgGet( query, "Session" );
1445             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1446
1447             p_rtsp = RtspClientGet( p_media, psz_session );
1448
1449             psz_position = httpd_MsgGet( query, "Range" );
1450             if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1451             if( psz_position )
1452             {
1453                 double f_pos = ParseNPT (psz_position + 4);
1454                 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1455                 f_pos /= ((double)(p_media->i_length))/1000 /1000 / 100;
1456                 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1457                              psz_session, f_pos, NULL );
1458             }
1459
1460             if( !psz_playnow )
1461             {
1462                 answer->i_status = 200;
1463                 answer->i_body = 0;
1464                 answer->p_body = NULL;
1465             }
1466             break;
1467
1468         case HTTPD_MSG_TEARDOWN:
1469             answer->i_status = 200;
1470             answer->i_body = 0;
1471             answer->p_body = NULL;
1472
1473             psz_session = httpd_MsgGet( query, "Session" );
1474             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1475
1476             p_rtsp = RtspClientGet( p_media, psz_session );
1477             if( !p_rtsp ) break;
1478
1479             for( i = 0; i < p_rtsp->i_es; i++ )
1480             {
1481                 if( p_rtsp->es[i]->p_media_es == p_es )
1482                 {
1483                     TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, p_rtsp->es[i] );
1484                     break;
1485                 }
1486             }
1487
1488             if( !p_rtsp->i_es )
1489             {
1490                 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1491                              0, NULL );
1492                 RtspClientDel( p_media, p_rtsp );
1493             }
1494             break;
1495
1496         case HTTPD_MSG_PAUSE:
1497             /* This is kind of a kludge. Should we only support Aggregate
1498              * Operations ? */
1499             psz_session = httpd_MsgGet( query, "Session" );
1500             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1501
1502             p_rtsp = RtspClientGet( p_media, psz_session );
1503             if( !p_rtsp ) break;
1504
1505             if( !p_rtsp->b_paused )
1506             {
1507                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1508                              0, NULL );
1509                 p_rtsp->b_paused = true;
1510             }
1511
1512             answer->i_status = 200;
1513             answer->i_body = 0;
1514             answer->p_body = NULL;
1515             break;
1516
1517         default:
1518             return VLC_EGENERIC;
1519             break;
1520     }
1521
1522     httpd_MsgAdd( answer, "Server", "VLC Server" );
1523     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1524     psz_cseq = httpd_MsgGet( query, "Cseq" );
1525     if (psz_cseq)
1526         i_cseq = atoi( psz_cseq );
1527     else
1528         i_cseq = 0;
1529     httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1530     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1531
1532     if( psz_session )
1533         httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1534
1535     return VLC_SUCCESS;
1536 }
1537
1538 /*****************************************************************************
1539  * SDPGenerate: TODO
1540  * FIXME: need to be moved to a common place ?
1541  *****************************************************************************/
1542 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1543 {
1544     char *psz_sdp, ip[NI_MAXNUMERICHOST];
1545     const char *psz_control;
1546
1547     if( httpd_ServerIP( cl, ip ) == NULL )
1548         return NULL;
1549
1550     bool ipv6 = ( strchr( ip, ':' ) != NULL );
1551
1552     psz_control = ipv6 ? p_media->psz_rtsp_control_v6
1553                        : p_media->psz_rtsp_control_v4;
1554
1555     /* Dummy destination address for RTSP */
1556     struct sockaddr_storage dst;
1557     socklen_t dstlen = ipv6 ? sizeof( struct sockaddr_in6 )
1558                             : sizeof( struct sockaddr_in );
1559     memset (&dst, 0, dstlen);
1560     dst.ss_family = ipv6 ? AF_INET6 : AF_INET;
1561 #ifdef HAVE_SA_LEN
1562     dst.ss_len = dstlen;
1563 #endif
1564
1565     psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_media->p_vod ), "sout-rtp-",
1566                              NULL, 0, (struct sockaddr *)&dst, dstlen );
1567     if( psz_sdp == NULL )
1568         return NULL;
1569
1570     if( p_media->i_length > 0 )
1571     {
1572         lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
1573         sdp_AddAttribute( &psz_sdp, "range"," npt=0-%lld.%03u", d.quot,
1574                           (unsigned)d.rem );
1575     }
1576
1577     for( int i = 0; i < p_media->i_es; i++ )
1578     {
1579         media_es_t *p_es = p_media->es[i];
1580         const char *mime_major; /* major MIME type */
1581
1582         switch( p_es->fmt.i_cat )
1583         {
1584             case VIDEO_ES:
1585                 mime_major = "video";
1586                 break;
1587             case AUDIO_ES:
1588                 mime_major = "audio";
1589                 break;
1590             case SPU_ES:
1591                 mime_major = "text";
1592                 break;
1593             default:
1594                 continue;
1595         }
1596
1597         sdp_AddMedia( &psz_sdp, mime_major, "RTP/AVP", 0 /* p_es->i_port */,
1598                       p_es->i_payload_type, false, 0,
1599                       p_es->psz_ptname, p_es->i_clock_rate, p_es->i_channels,
1600                       p_es->psz_fmtp );
1601
1602         sdp_AddAttribute( &psz_sdp, "control", psz_control, ip, i );
1603     }
1604
1605     return psz_sdp;
1606 }