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

   1 /*****************************************************************************
   2  * rtsp.c: rtsp VoD server module
   3  *****************************************************************************
   4  * Copyright (C) 2003-2006 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   8  *          Gildas Bazin <gbazin@videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32
  33 #include <vlc_common.h>
  34 #include <vlc_plugin.h>
  35 #include <vlc_input.h>
  36 #include <vlc_sout.h>
  37 #include <vlc_block.h>
  38
  39 #include <vlc_httpd.h>
  40 #include <vlc_vod.h>
  41 #include <vlc_url.h>
  42 #include <vlc_network.h>
  43 #include <vlc_charset.h>
  44 #include <vlc_strings.h>
  45 #include <vlc_rand.h>
  46
  47 #ifndef WIN32
  48 # include <locale.h>
  49 #endif
  50
  51 #ifdef HAVE_XLOCALE_H
  52 # include <xlocale.h>
  53 #endif
  54
  55 /*****************************************************************************
  56  * Module descriptor
  57  *****************************************************************************/
  58 static int  Open ( vlc_object_t * );
  59 static void Close( vlc_object_t * );
  60
  61 #define THROTTLE_TEXT N_( "Maximum number of connections" )
  62 #define THROTTLE_LONGTEXT N_( "This limits the maximum number of clients " \
  63     "that can connect to the RTSP VOD. 0 means no limit."  )
  64
  65 #define RAWMUX_TEXT N_( "MUX for RAW RTSP transport" )
  66
  67 #define SESSION_TIMEOUT_TEXT N_( "Sets the timeout option in the RTSP " \
  68     "session string" )
  69 #define SESSION_TIMEOUT_LONGTEXT N_( "Defines what timeout option to add " \
  70     "to the RTSP session ID string. Setting it to a negative number removes " \
  71     "the timeout option entirely. This is needed by some IPTV STBs (such as " \
  72     "those made by HansunTech) which get confused by it. The default is 5." )
  73
  74 vlc_module_begin ()
  75     set_shortname( N_("RTSP VoD" ) )
  76     set_description( N_("RTSP VoD server") )
  77     set_category( CAT_SOUT )
  78     set_subcategory( SUBCAT_SOUT_VOD )
  79     set_capability( "vod server", 1 )
  80     set_callbacks( Open, Close )
  81     add_shortcut( "rtsp" )
  82     add_string( "rtsp-raw-mux", "ts", RAWMUX_TEXT,
  83                 RAWMUX_TEXT, true )
  84     add_integer( "rtsp-throttle-users", 0, THROTTLE_TEXT,
  85                  THROTTLE_LONGTEXT, true )
  86     add_integer( "rtsp-session-timeout", 5, SESSION_TIMEOUT_TEXT,
  87                  SESSION_TIMEOUT_LONGTEXT, true )
  88 vlc_module_end ()
  89
  90 /*****************************************************************************
  91  * Exported prototypes
  92  *****************************************************************************/
  93
  94 typedef struct media_es_t media_es_t;
  95
  96 typedef struct
  97 {
  98     media_es_t *p_media_es;
  99     int i_port;
 100
 101 } rtsp_client_es_t;
 102
 103 typedef struct
 104 {
 105     char *psz_session;
 106
 107     bool b_playing; /* is it in "play" state */
 108     int i_port_raw;
 109
 110     int i_es;
 111     rtsp_client_es_t **es;
 112
 113 } rtsp_client_t;
 114
 115 struct media_es_t
 116 {
 117     /* VoD server */
 118     vod_t *p_vod;
 119
 120     /* RTSP server */
 121     httpd_url_t *p_rtsp_url;
 122
 123     vod_media_t *p_media;
 124
 125     es_format_t fmt;
 126     uint8_t     i_payload_type;
 127     const char  *psz_ptname;
 128     unsigned    i_clock_rate;
 129     unsigned    i_channels;
 130     char        *psz_fmtp;
 131
 132 };
 133
 134 struct vod_media_t
 135 {
 136     int id;
 137
 138     /* VoD server */
 139     vod_t *p_vod;
 140
 141     /* RTSP server */
 142     httpd_url_t  *p_rtsp_url;
 143     char         *psz_rtsp_control_v4;
 144     char         *psz_rtsp_control_v6;
 145     char         *psz_rtsp_path;
 146
 147     vlc_mutex_t lock;
 148
 149     /* ES list */
 150     int        i_es;
 151     media_es_t **es;
 152     const char *psz_mux;
 153     bool  b_raw;
 154
 155     /* RTSP client */
 156     int           i_rtsp;
 157     rtsp_client_t **rtsp;
 158
 159     /* Infos */
 160     mtime_t i_length;
 161 };
 162
 163 struct vod_sys_t
 164 {
 165     /* RTSP server */
 166     httpd_host_t *p_rtsp_host;
 167     char *psz_path;
 168     int i_throttle_users;
 169     int i_connections;
 170
 171     char *psz_raw_mux;
 172
 173     int i_session_timeout;
 174
 175     /* List of media */
 176     int i_media_id;
 177     int i_media;
 178     vod_media_t **media;
 179
 180     /* */
 181     vlc_thread_t thread;
 182     block_fifo_t *p_fifo_cmd;
 183 };
 184
 185 /* rtsp delayed command (to avoid deadlock between vlm/httpd) */
 186 typedef enum
 187 {
 188     RTSP_CMD_TYPE_NONE,  /* Exit requested */
 189
 190     RTSP_CMD_TYPE_PLAY,
 191     RTSP_CMD_TYPE_PAUSE,
 192     RTSP_CMD_TYPE_STOP,
 193     RTSP_CMD_TYPE_SEEK,
 194     RTSP_CMD_TYPE_REWIND,
 195     RTSP_CMD_TYPE_FORWARD,
 196
 197     RTSP_CMD_TYPE_ADD,
 198     RTSP_CMD_TYPE_DEL,
 199 } rtsp_cmd_type_t;
 200
 201 /* */
 202 typedef struct
 203 {
 204     int i_type;
 205     int i_media_id;
 206     vod_media_t *p_media;
 207     char *psz_session;
 208     char *psz_arg;
 209     int64_t i_arg;
 210     double f_arg;
 211 } rtsp_cmd_t;
 212
 213 static vod_media_t *MediaNew( vod_t *, const char *, input_item_t * );
 214 static void         MediaDel( vod_t *, vod_media_t * );
 215 static void         MediaAskDel ( vod_t *, vod_media_t * );
 216 static int          MediaAddES( vod_t *, vod_media_t *, es_format_t * );
 217 static void         MediaDelES( vod_t *, vod_media_t *, es_format_t * );
 218
 219 static void* CommandThread( void * );
 220 static void  CommandPush( vod_t *, rtsp_cmd_type_t, vod_media_t *,
 221                           const char *psz_session, int64_t i_arg,
 222                           double f_arg, const char *psz_arg );
 223
 224 static rtsp_client_t *RtspClientNew( vod_media_t *, char * );
 225 static rtsp_client_t *RtspClientGet( vod_media_t *, const char * );
 226 static void           RtspClientDel( vod_media_t *, rtsp_client_t * );
 227
 228 static int RtspCallback( httpd_callback_sys_t *, httpd_client_t *,
 229                          httpd_message_t *, const httpd_message_t * );
 230 static int RtspCallbackES( httpd_callback_sys_t *, httpd_client_t *,
 231                            httpd_message_t *, const httpd_message_t * );
 232
 233 static char *SDPGenerate( const vod_media_t *, httpd_client_t *cl );
 234
 235 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
 236 {
 237     static const char hex[16] = "0123456789abcdef";
 238
 239     for( int i = 0; i < i_data; i++ )
 240     {
 241         s[2*i+0] = hex[(p_data[i]>>4)&0xf];
 242         s[2*i+1] = hex[(p_data[i]   )&0xf];
 243     }
 244     s[2*i_data] = '\0';
 245 }
 246
 247 /*****************************************************************************
 248  * Open: Starts the RTSP server module
 249  *****************************************************************************/
 250 static int Open( vlc_object_t *p_this )
 251 {
 252     vod_t *p_vod = (vod_t *)p_this;
 253     vod_sys_t *p_sys = NULL;
 254     char *psz_url = NULL;
 255     vlc_url_t url;
 256
 257     psz_url = var_InheritString( p_vod, "rtsp-host" );
 258     vlc_UrlParse( &url, psz_url, 0 );
 259     free( psz_url );
 260
 261     p_vod->p_sys = p_sys = malloc( sizeof( vod_sys_t ) );
 262     if( !p_sys ) goto error;
 263     p_sys->p_rtsp_host = 0;
 264
 265     p_sys->i_session_timeout = var_CreateGetInteger( p_this, "rtsp-session-timeout" );
 266
 267     p_sys->i_throttle_users = var_CreateGetInteger( p_this, "rtsp-throttle-users" );
 268     msg_Dbg( p_this, "allowing up to %d connections", p_sys->i_throttle_users );
 269     p_sys->i_connections = 0;
 270
 271     p_sys->psz_raw_mux = var_CreateGetString( p_this, "rtsp-raw-mux" );
 272
 273     var_Create( p_vod, "rtsp-host", VLC_VAR_STRING );
 274     var_SetString( p_vod, "rtsp-host", url.psz_host );
 275
 276     if( url.i_port <= 0 ) url.i_port = 554;
 277     var_Create( p_vod, "rtsp-port", VLC_VAR_INTEGER );
 278     var_SetInteger( p_vod, "rtsp-port", url.i_port );
 279
 280     p_sys->p_rtsp_host = vlc_rtsp_HostNew( VLC_OBJECT(p_vod) );
 281     if( !p_sys->p_rtsp_host )
 282     {
 283         msg_Err( p_vod, "cannot create RTSP server" );
 284         goto error;
 285     }
 286
 287     p_sys->psz_path = strdup( url.psz_path ? url.psz_path : "/" );
 288
 289     vlc_UrlClean( &url );
 290
 291     TAB_INIT( p_sys->i_media, p_sys->media );
 292     p_sys->i_media_id = 0;
 293
 294     p_vod->pf_media_new = MediaNew;
 295     p_vod->pf_media_del = MediaAskDel;
 296
 297     p_sys->p_fifo_cmd = block_FifoNew();
 298     if( vlc_clone( &p_sys->thread, CommandThread, p_vod, VLC_THREAD_PRIORITY_LOW ) )
 299     {
 300         msg_Err( p_vod, "cannot spawn rtsp vod thread" );
 301         block_FifoRelease( p_sys->p_fifo_cmd );
 302         free( p_sys->psz_path );
 303         goto error;
 304     }
 305
 306     return VLC_SUCCESS;
 307
 308 error:
 309     if( p_sys )
 310     {
 311         if( p_sys->p_rtsp_host ) httpd_HostDelete( p_sys->p_rtsp_host );
 312         free( p_sys->psz_raw_mux );
 313         free( p_sys );
 314     }
 315     vlc_UrlClean( &url );
 316
 317     return VLC_EGENERIC;
 318 }
 319
 320 /*****************************************************************************
 321  * Close:
 322  *****************************************************************************/
 323 static void Close( vlc_object_t * p_this )
 324 {
 325     vod_t *p_vod = (vod_t *)p_this;
 326     vod_sys_t *p_sys = p_vod->p_sys;
 327
 328     /* Stop command thread */
 329     CommandPush( p_vod, RTSP_CMD_TYPE_NONE, NULL, NULL, 0, 0.0, NULL );
 330     vlc_join( p_sys->thread, NULL );
 331
 332     while( block_FifoCount( p_sys->p_fifo_cmd ) > 0 )
 333     {
 334         rtsp_cmd_t cmd;
 335         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 336         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 337         block_Release( p_block_cmd );
 338         if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 339             MediaDel(p_vod, cmd.p_media);
 340         free( cmd.psz_session );
 341         free( cmd.psz_arg );
 342     }
 343     block_FifoRelease( p_sys->p_fifo_cmd );
 344
 345     httpd_HostDelete( p_sys->p_rtsp_host );
 346     var_Destroy( p_this, "rtsp-session-timeout" );
 347     var_Destroy( p_this, "rtsp-throttle-users" );
 348     var_Destroy( p_this, "rtsp-raw-mux" );
 349
 350     /* Check VLM is not buggy */
 351     if( p_sys->i_media > 0 )
 352         msg_Err( p_vod, "rtsp vod leaking %d medias", p_sys->i_media );
 353     TAB_CLEAN( p_sys->i_media, p_sys->media );
 354
 355     free( p_sys->psz_path );
 356     free( p_sys->psz_raw_mux );
 357     free( p_sys );
 358 }
 359
 360 /*****************************************************************************
 361  * Media handling
 362  *****************************************************************************/
 363 static vod_media_t *MediaNew( vod_t *p_vod, const char *psz_name,
 364                               input_item_t *p_item )
 365 {
 366     vod_sys_t *p_sys = p_vod->p_sys;
 367
 368     vod_media_t *p_media = calloc( 1, sizeof(vod_media_t) );
 369     if( !p_media )
 370         return NULL;
 371
 372     p_media->id = p_sys->i_media_id++;
 373     TAB_INIT( p_media->i_es, p_media->es );
 374     p_media->psz_mux = NULL;
 375     TAB_INIT( p_media->i_rtsp, p_media->rtsp );
 376     p_media->b_raw = false;
 377
 378     if( asprintf( &p_media->psz_rtsp_path, "%s%s",
 379                   p_sys->psz_path, psz_name ) <0 )
 380         return NULL;
 381     p_media->p_rtsp_url =
 382         httpd_UrlNewUnique( p_sys->p_rtsp_host, p_media->psz_rtsp_path, NULL,
 383                             NULL, NULL );
 384
 385     if( !p_media->p_rtsp_url )
 386     {
 387         msg_Err( p_vod, "cannot create RTSP url (%s)", p_media->psz_rtsp_path);
 388         free( p_media->psz_rtsp_path );
 389         free( p_media );
 390         return NULL;
 391     }
 392
 393     msg_Dbg( p_vod, "created RTSP url: %s", p_media->psz_rtsp_path );
 394
 395     if( asprintf( &p_media->psz_rtsp_control_v4,
 396                   "rtsp://%%s:%%d%s/trackID=%%d",
 397                   p_media->psz_rtsp_path ) < 0 )
 398     {
 399         httpd_UrlDelete( p_media->p_rtsp_url );
 400         free( p_media->psz_rtsp_path );
 401         free( p_media );
 402         return NULL;
 403     }
 404     if( asprintf( &p_media->psz_rtsp_control_v6,
 405                   "rtsp://[%%s]:%%d%s/trackID=%%d",
 406                   p_media->psz_rtsp_path ) < 0 )
 407     {
 408         httpd_UrlDelete( p_media->p_rtsp_url );
 409         free( p_media->psz_rtsp_path );
 410         free( p_media );
 411         return NULL;
 412     }
 413
 414     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_SETUP,
 415                     RtspCallback, (void*)p_media );
 416     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_DESCRIBE,
 417                     RtspCallback, (void*)p_media );
 418     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PLAY,
 419                     RtspCallback, (void*)p_media );
 420     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PAUSE,
 421                     RtspCallback, (void*)p_media );
 422     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_GETPARAMETER,
 423                     RtspCallback, (void*)p_media );
 424     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 425                     RtspCallback, (void*)p_media );
 426
 427     p_media->p_vod = p_vod;
 428
 429     vlc_mutex_init( &p_media->lock );
 430
 431     p_media->i_length = input_item_GetDuration( p_item );
 432
 433     vlc_mutex_lock( &p_item->lock );
 434     msg_Dbg( p_vod, "media has %i declared ES", p_item->i_es );
 435     for( int i = 0; i < p_item->i_es; i++ )
 436     {
 437         MediaAddES( p_vod, p_media, p_item->es[i] );
 438     }
 439     vlc_mutex_unlock( &p_item->lock );
 440
 441     CommandPush( p_vod, RTSP_CMD_TYPE_ADD, p_media, NULL, 0, 0.0, NULL );
 442     return p_media;
 443 }
 444
 445 static void MediaAskDel ( vod_t *p_vod, vod_media_t *p_media )
 446 {
 447     CommandPush( p_vod, RTSP_CMD_TYPE_DEL, p_media, NULL, 0, 0.0, NULL );
 448 }
 449
 450 static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
 451 {
 452     vod_sys_t *p_sys = p_vod->p_sys;
 453
 454     msg_Dbg( p_vod, "deleting media: %s", p_media->psz_rtsp_path );
 455
 456     TAB_REMOVE( p_sys->i_media, p_sys->media, p_media );
 457
 458     httpd_UrlDelete( p_media->p_rtsp_url );
 459
 460     while( p_media->i_rtsp > 0 )
 461         RtspClientDel( p_media, p_media->rtsp[0] );
 462     TAB_CLEAN( p_media->i_rtsp, p_media->rtsp );
 463
 464     free( p_media->psz_rtsp_path );
 465     free( p_media->psz_rtsp_control_v6 );
 466     free( p_media->psz_rtsp_control_v4 );
 467
 468     while( p_media->i_es )
 469         MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );
 470     TAB_CLEAN( p_media->i_es, p_media->es );
 471
 472     vlc_mutex_destroy( &p_media->lock );
 473
 474     free( p_media );
 475 }
 476
 477 static int MediaAddES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt )
 478 {
 479     char *psz_urlc;
 480
 481     media_es_t *p_es = calloc( 1, sizeof(media_es_t) );
 482     if( !p_es )
 483         return VLC_ENOMEM;
 484
 485     p_media->psz_mux = NULL;
 486
 487     /* TODO: update SDP, etc... */
 488     if( asprintf( &psz_urlc, "%s/trackID=%d",
 489               p_media->psz_rtsp_path, p_media->i_es ) < 0 )
 490     {
 491         free( p_es );
 492         return VLC_ENOMEM;
 493     }
 494     msg_Dbg( p_vod, "  - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
 495
 496     /* Dynamic payload. No conflict since we put each ES in its own
 497      * RTP session */
 498     p_es->i_payload_type = 96;
 499     p_es->i_clock_rate = 90000;
 500     p_es->i_channels = 1;
 501
 502     switch( p_fmt->i_codec )
 503     {
 504         case VLC_CODEC_S16B:
 505             if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
 506             {
 507                 p_es->i_payload_type = 11;
 508             }
 509             else if( p_fmt->audio.i_channels == 2 &&
 510                      p_fmt->audio.i_rate == 44100 )
 511             {
 512                 p_es->i_payload_type = 10;
 513             }
 514             p_es->psz_ptname = "L16";
 515             p_es->i_clock_rate = p_fmt->audio.i_rate;
 516             p_es->i_channels = p_fmt->audio.i_channels;
 517             break;
 518         case VLC_CODEC_U8:
 519             p_es->psz_ptname = "L8";
 520             p_es->i_clock_rate = p_fmt->audio.i_rate;
 521             p_es->i_channels = p_fmt->audio.i_channels;
 522             break;
 523         case VLC_CODEC_MPGA:
 524             p_es->i_payload_type = 14;
 525             p_es->psz_ptname = "MPA";
 526             break;
 527         case VLC_CODEC_MPGV:
 528             p_es->i_payload_type = 32;
 529             p_es->psz_ptname = "MPV";
 530             break;
 531         case VLC_CODEC_A52:
 532             p_es->psz_ptname = "ac3";
 533             p_es->i_clock_rate = p_fmt->audio.i_rate;
 534             break;
 535         case VLC_CODEC_H263:
 536             p_es->psz_ptname = "H263-1998";
 537             break;
 538         case VLC_CODEC_H264:
 539             p_es->psz_ptname = "H264";
 540             p_es->psz_fmtp = NULL;
 541             /* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
 542             if( p_fmt->i_extra > 0 )
 543             {
 544                 uint8_t *p_buffer = p_fmt->p_extra;
 545                 int     i_buffer = p_fmt->i_extra;
 546                 char    *p_64_sps = NULL;
 547                 char    *p_64_pps = NULL;
 548                 char    hexa[6+1];
 549
 550                 while( i_buffer > 4 )
 551                 {
 552                     int i_offset    = 0;
 553                     int i_size      = 0;
 554
 555                     while( p_buffer[0] != 0 || p_buffer[1] != 0 ||
 556                            p_buffer[2] != 1 )
 557                     {
 558                         p_buffer++;
 559                         i_buffer--;
 560                         if( i_buffer == 0 ) break;
 561                     }
 562
 563                     if( i_buffer < 4 || memcmp(p_buffer, "\x00\x00\x01", 3 ) )
 564                     {
 565                         /* No startcode found.. */
 566                         break;
 567                     }
 568                     p_buffer += 3;
 569                     i_buffer -= 3;
 570
 571                     const int i_nal_type = p_buffer[0]&0x1f;
 572
 573                     i_size = i_buffer;
 574                     for( i_offset = 0; i_offset+2 < i_buffer ; i_offset++)
 575                     {
 576                         if( !memcmp(p_buffer + i_offset, "\x00\x00\x01", 3 ) )
 577                         {
 578                             /* we found another startcode */
 579                             while( i_offset > 0 && 0 == p_buffer[ i_offset - 1 ] )
 580                                 i_offset--;
 581                             i_size = i_offset;
 582                             break;
 583                         }
 584                     }
 585
 586                     if( i_size == 0 )
 587                     {
 588                         /* No-info found in nal */
 589                         continue;
 590                     }
 591
 592                     if( i_nal_type == 7 )
 593                     {
 594                         free( p_64_sps );
 595                         p_64_sps = vlc_b64_encode_binary( p_buffer, i_size );
 596                         /* XXX: nothing ensures that i_size >= 4 ?? */
 597                         sprintf_hexa( hexa, &p_buffer[1], 3 );
 598                     }
 599                     else if( i_nal_type == 8 )
 600                     {
 601                         free( p_64_pps );
 602                         p_64_pps = vlc_b64_encode_binary( p_buffer, i_size );
 603                     }
 604                     i_buffer -= i_size;
 605                     p_buffer += i_size;
 606                 }
 607                 /* */
 608                 if( p_64_sps && p_64_pps )
 609                 {
 610                     if( asprintf( &p_es->psz_fmtp,
 611                                   "packetization-mode=1;profile-level-id=%s;"
 612                                   "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
 613                                   p_64_pps ) < 0 )
 614                     {
 615                         free( p_64_sps );
 616                         free( p_64_pps );
 617                         free( psz_urlc );
 618                         free( p_es );
 619                         return VLC_ENOMEM;
 620                     }
 621                 }
 622                 free( p_64_sps );
 623                 free( p_64_pps );
 624             }
 625             if( !p_es->psz_fmtp )
 626                 p_es->psz_fmtp = strdup( "packetization-mode=1" );
 627             break;
 628         case VLC_CODEC_MP4V:
 629             p_es->psz_ptname = "MP4V-ES";
 630             if( p_fmt->i_extra > 0 )
 631             {
 632                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 633                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 634                 if( asprintf( &p_es->psz_fmtp,
 635                               "profile-level-id=3; config=%s;", p_hexa ) == -1 )
 636                     p_es->psz_fmtp = NULL;
 637                 free( p_hexa );
 638             }
 639             break;
 640         case VLC_CODEC_MP4A:
 641             p_es->psz_ptname = "mpeg4-generic";
 642             p_es->i_clock_rate = p_fmt->audio.i_rate;
 643             if( p_fmt->i_extra > 0 )
 644             {
 645                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 646                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 647                 if( asprintf( &p_es->psz_fmtp,
 648                               "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
 649                               "config=%s; SizeLength=13;IndexLength=3; "
 650                               "IndexDeltaLength=3; Profile=1;", p_hexa ) == -1 )
 651                     p_es->psz_fmtp = NULL;
 652                 free( p_hexa );
 653             }
 654             break;
 655         case VLC_FOURCC( 'm', 'p', '2', 't' ):
 656             p_media->psz_mux = "ts";
 657             p_es->i_payload_type = 33;
 658             p_es->psz_ptname = "MP2T";
 659             break;
 660         case VLC_FOURCC( 'm', 'p', '2', 'p' ):
 661             p_media->psz_mux = "ps";
 662             p_es->psz_ptname = "MP2P";
 663             break;
 664         case VLC_CODEC_AMR_NB:
 665             p_es->psz_ptname = "AMR";
 666             p_es->i_clock_rate = 8000;
 667             if(p_fmt->audio.i_channels == 2 )
 668                 p_es->i_channels = 2;
 669             p_es->psz_fmtp = strdup( "octet-align=1" );
 670             break;
 671         case VLC_CODEC_AMR_WB:
 672             p_es->psz_ptname = "AMR-WB";
 673             p_es->i_clock_rate = 16000;
 674             if(p_fmt->audio.i_channels == 2 )
 675                 p_es->i_channels = 2;
 676             p_es->psz_fmtp = strdup( "octet-align=1" );
 677             break;
 678
 679         default:
 680             msg_Err( p_vod, "cannot add this stream (unsupported "
 681                     "codec: %4.4s)", (char*)&p_fmt->i_codec );
 682             free( psz_urlc );
 683             free( p_es );
 684             return VLC_EGENERIC;
 685     }
 686
 687     p_es->p_rtsp_url =
 688         httpd_UrlNewUnique( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL,
 689                             NULL );
 690
 691     if( !p_es->p_rtsp_url )
 692     {
 693         msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
 694         free( psz_urlc );
 695         free( p_es );
 696         return VLC_EGENERIC;
 697     }
 698     free( psz_urlc );
 699
 700     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
 701                     RtspCallbackES, (void*)p_es );
 702     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 703                     RtspCallbackES, (void*)p_es );
 704     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
 705                     RtspCallbackES, (void*)p_es );
 706     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
 707                     RtspCallbackES, (void*)p_es );
 708
 709     es_format_Copy( &p_es->fmt, p_fmt );
 710     p_es->p_vod = p_vod;
 711     p_es->p_media = p_media;
 712
 713     vlc_mutex_lock( &p_media->lock );
 714     TAB_APPEND( p_media->i_es, p_media->es, p_es );
 715     vlc_mutex_unlock( &p_media->lock );
 716
 717     return VLC_SUCCESS;
 718 }
 719
 720 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
 721 {
 722     media_es_t *p_es = NULL;
 723
 724     /* Find the ES */
 725     for( int i = 0; i < p_media->i_es; i++ )
 726     {
 727         if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
 728             p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
 729             p_media->es[i]->fmt.i_id == p_fmt->i_id )
 730         {
 731             p_es = p_media->es[i];
 732         }
 733     }
 734     if( !p_es ) return;
 735
 736     msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );
 737
 738     vlc_mutex_lock( &p_media->lock );
 739     TAB_REMOVE( p_media->i_es, p_media->es, p_es );
 740     vlc_mutex_unlock( &p_media->lock );
 741
 742     free( p_es->psz_fmtp );
 743
 744     if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
 745     es_format_Clean( &p_es->fmt );
 746     free( p_es );
 747 }
 748
 749 static void CommandPush( vod_t *p_vod, rtsp_cmd_type_t i_type, vod_media_t *p_media, const char *psz_session, int64_t i_arg,
 750                          double f_arg, const char *psz_arg )
 751 {
 752     rtsp_cmd_t cmd;
 753     block_t *p_cmd;
 754
 755     memset( &cmd, 0, sizeof(cmd) );
 756     cmd.i_type = i_type;
 757     cmd.p_media = p_media;
 758     if( p_media )
 759         cmd.i_media_id = p_media->id;
 760     if( psz_session )
 761         cmd.psz_session = strdup(psz_session);
 762     cmd.i_arg = i_arg;
 763     cmd.f_arg = f_arg;
 764     if( psz_arg )
 765         cmd.psz_arg = strdup(psz_arg);
 766
 767     p_cmd = block_New( p_vod, sizeof(rtsp_cmd_t) );
 768     memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
 769
 770     block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
 771 }
 772
 773 static void* CommandThread( void *obj )
 774 {
 775     vod_t *p_vod = (vod_t*)obj;
 776     vod_sys_t *p_sys = p_vod->p_sys;
 777     int canc = vlc_savecancel ();
 778
 779     for( ;; )
 780     {
 781         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 782         rtsp_cmd_t cmd;
 783         vod_media_t *p_media = NULL;
 784         int i;
 785
 786         if( !p_block_cmd )
 787             break;
 788
 789         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 790         block_Release( p_block_cmd );
 791
 792         if( cmd.i_type == RTSP_CMD_TYPE_NONE )
 793             break;
 794
 795         if ( cmd.i_type == RTSP_CMD_TYPE_ADD )
 796         {
 797             TAB_APPEND( p_sys->i_media, p_sys->media, cmd.p_media );
 798             goto next;
 799         }
 800
 801         if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
 802         {
 803             MediaDel(p_vod, cmd.p_media);
 804             goto next;
 805         }
 806
 807         /* */
 808         for( i = 0; i < p_sys->i_media; i++ )
 809         {
 810             if( p_sys->media[i]->id == cmd.i_media_id )
 811                 break;
 812         }
 813         if( i >= p_sys->i_media )
 814         {
 815             goto next;
 816         }
 817         p_media = p_sys->media[i];
 818
 819         switch( cmd.i_type )
 820         {
 821         case RTSP_CMD_TYPE_PLAY:
 822             cmd.i_arg = -1;
 823             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 824                               VOD_MEDIA_PLAY, cmd.psz_arg, &cmd.i_arg );
 825             break;
 826         case RTSP_CMD_TYPE_PAUSE:
 827             cmd.i_arg = -1;
 828             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 829                               VOD_MEDIA_PAUSE, &cmd.i_arg );
 830             break;
 831
 832         case RTSP_CMD_TYPE_STOP:
 833             vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
 834             break;
 835
 836         case RTSP_CMD_TYPE_SEEK:
 837             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 838                               VOD_MEDIA_SEEK, cmd.i_arg );
 839             break;
 840
 841         case RTSP_CMD_TYPE_REWIND:
 842             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 843                               VOD_MEDIA_REWIND, cmd.f_arg );
 844             break;
 845
 846         case RTSP_CMD_TYPE_FORWARD:
 847             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 848                               VOD_MEDIA_FORWARD, cmd.f_arg );
 849             break;
 850
 851         default:
 852             break;
 853         }
 854
 855     next:
 856         free( cmd.psz_session );
 857         free( cmd.psz_arg );
 858     }
 859
 860     vlc_restorecancel (canc);
 861     return NULL;
 862 }
 863
 864 /****************************************************************************
 865  * RTSP server implementation
 866  ****************************************************************************/
 867 static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
 868 {
 869     rtsp_client_t *p_rtsp = calloc( 1, sizeof(rtsp_client_t) );
 870
 871     if( !p_rtsp )
 872         return NULL;
 873     p_rtsp->es = 0;
 874
 875     p_rtsp->psz_session = psz_session;
 876     TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 877
 878     p_media->p_vod->p_sys->i_connections++;
 879     msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
 880              psz_session, p_media->p_vod->p_sys->i_throttle_users );
 881
 882     return p_rtsp;
 883 }
 884
 885 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
 886 {
 887     for( int i = 0; psz_session && i < p_media->i_rtsp; i++ )
 888     {
 889         if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
 890             return p_media->rtsp[i];
 891     }
 892
 893     return NULL;
 894 }
 895
 896 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
 897 {
 898     p_media->p_vod->p_sys->i_connections--;
 899     msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
 900              p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
 901
 902     while( p_rtsp->i_es )
 903     {
 904         p_rtsp->i_es--;
 905         free( p_rtsp->es[p_rtsp->i_es] );
 906     }
 907     free( p_rtsp->es );
 908
 909     TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 910
 911     free( p_rtsp->psz_session );
 912     free( p_rtsp );
 913 }
 914
 915
 916 static int64_t ParseNPT (const char *str)
 917 {
 918     locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
 919     locale_t oldloc = uselocale (loc);
 920     unsigned hour, min;
 921     float sec;
 922
 923     if (sscanf (str, "%u:%u:%f", &hour, &min, &sec) == 3)
 924         sec += ((hour * 60) + min) * 60;
 925     else
 926     if (sscanf (str, "%f", &sec) != 1)
 927         sec = 0.;
 928
 929     if (loc != (locale_t)0)
 930     {
 931         uselocale (oldloc);
 932         freelocale (loc);
 933     }
 934     return sec * CLOCK_FREQ;
 935 }
 936
 937
 938 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
 939                          httpd_message_t *answer, const httpd_message_t *query )
 940 {
 941     vod_media_t *p_media = (vod_media_t*)p_args;
 942     vod_t *p_vod = p_media->p_vod;
 943     const char *psz_transport = NULL;
 944     const char *psz_playnow = NULL; /* support option: x-playNow */
 945     const char *psz_session = NULL;
 946     const char *psz_cseq = NULL;
 947     rtsp_client_t *p_rtsp;
 948     int i_cseq = 0;
 949
 950     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
 951
 952     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
 953
 954     answer->i_proto   = HTTPD_PROTO_RTSP;
 955     answer->i_version = query->i_version;
 956     answer->i_type    = HTTPD_MSG_ANSWER;
 957     answer->i_body    = 0;
 958     answer->p_body    = NULL;
 959
 960     switch( query->i_type )
 961     {
 962         case HTTPD_MSG_SETUP:
 963         {
 964             psz_playnow = httpd_MsgGet( query, "x-playNow" );
 965             psz_transport = httpd_MsgGet( query, "Transport" );
 966             if( psz_transport == NULL )
 967             {
 968                 answer->i_status = 400;
 969                 break;
 970             }
 971             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
 972
 973             if( strstr( psz_transport, "unicast" ) &&
 974                 strstr( psz_transport, "client_port=" ) )
 975             {
 976                 rtsp_client_t *p_rtsp = NULL;
 977                 char ip[NI_MAXNUMERICHOST];
 978                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
 979                                    strlen("client_port=") );
 980
 981                 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
 982                     strstr( psz_transport, "RAW/RAW/UDP" ) )
 983                 {
 984                     p_media->psz_mux = p_vod->p_sys->psz_raw_mux;
 985                     p_media->b_raw = true;
 986                 }
 987
 988                 if( httpd_ClientIP( cl, ip, NULL ) == NULL )
 989                 {
 990                     answer->i_status = 500;
 991                     answer->i_body = 0;
 992                     answer->p_body = NULL;
 993                     break;
 994                 }
 995
 996                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
 997                          ip, i_port );
 998
 999                 psz_session = httpd_MsgGet( query, "Session" );
1000                 if( !psz_session || !*psz_session )
1001                 {
1002                     char *psz_new;
1003                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1004                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1005                     {
1006                         answer->i_status = 503;
1007                         answer->i_body = 0;
1008                         answer->p_body = NULL;
1009                         break;
1010                     }
1011 #warning Should use secure randomness here! (spoofing risk)
1012                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1013                         return VLC_ENOMEM;
1014                     psz_session = psz_new;
1015
1016                     p_rtsp = RtspClientNew( p_media, psz_new );
1017                     if( !p_rtsp )
1018                     {
1019                         answer->i_status = 454;
1020                         answer->i_body = 0;
1021                         answer->p_body = NULL;
1022                         break;
1023                     }
1024                 }
1025                 else
1026                 {
1027                     p_rtsp = RtspClientGet( p_media, psz_session );
1028                     if( !p_rtsp )
1029                     {
1030                         answer->i_status = 454;
1031                         answer->i_body = 0;
1032                         answer->p_body = NULL;
1033                         break;
1034                     }
1035                 }
1036
1037                 answer->i_status = 200;
1038                 answer->i_body = 0;
1039                 answer->p_body = NULL;
1040
1041                 if( p_media->b_raw )
1042                 {
1043                     p_rtsp->i_port_raw = i_port;
1044
1045                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1046                     {
1047                         httpd_MsgAdd( answer, "Transport",
1048                                       "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1049                                       i_port, i_port + 1 );
1050                     }
1051                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1052                     {
1053                         httpd_MsgAdd( answer, "Transport",
1054                                       "RAW/RAW/UDP;unicast;client_port=%d-%d",
1055                                       i_port, i_port + 1 );
1056                     }
1057                 }
1058                 else
1059                     httpd_MsgAdd( answer, "Transport",
1060                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1061                                   i_port, i_port + 1 );
1062             }
1063             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1064             {
1065                 answer->i_status = 461;
1066                 answer->i_body = 0;
1067                 answer->p_body = NULL;
1068             }
1069
1070             /* Intentional fall-through on x-playNow option in RTSP request */
1071             if( !psz_playnow )
1072                 break;
1073         }
1074
1075         case HTTPD_MSG_PLAY:
1076         {
1077             char *psz_output, ip[NI_MAXNUMERICHOST];
1078             int i_port_audio = 0, i_port_video = 0;
1079
1080             /* for now only multicast so easy */
1081             if( !psz_playnow )
1082             {
1083                 answer->i_status = 200;
1084                 answer->i_body = 0;
1085                 answer->p_body = NULL;
1086             }
1087
1088             if( !psz_session )
1089                 psz_session = httpd_MsgGet( query, "Session" );
1090             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1091
1092             p_rtsp = RtspClientGet( p_media, psz_session );
1093             if( !p_rtsp )
1094             {
1095                 answer->i_status = 500;
1096                 answer->i_body = 0;
1097                 answer->p_body = NULL;
1098                 break;
1099             }
1100
1101             if( p_rtsp->b_playing )
1102             {
1103                 const char *psz_position = httpd_MsgGet( query, "Range" );
1104                 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1105                 if( psz_position )
1106                     psz_position = strstr( psz_position, "npt=" );
1107                 if( psz_position && !psz_scale )
1108                 {
1109                     int64_t i_time = ParseNPT (psz_position + 4);
1110                     msg_Dbg( p_vod, "seeking request: %s", psz_position );
1111                     CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1112                                  psz_session, i_time, 0.0, NULL );
1113                 }
1114                 else if( psz_scale )
1115                 {
1116                     double f_scale = 0.0;
1117                     char *end;
1118
1119                     f_scale = us_strtod( psz_scale, &end );
1120                     if( end > psz_scale )
1121                     {
1122                         f_scale = (f_scale * 30.0);
1123                         if( psz_scale[0] == '-' ) /* rewind */
1124                         {
1125                             msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1126                             CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
1127                                          psz_session, 0, f_scale, NULL );
1128                         }
1129                         else if(psz_scale[0] != '1' ) /* fast-forward */
1130                         {
1131                             msg_Dbg( p_vod, "fastforward request: %s",
1132                                      psz_scale );
1133                             CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
1134                                          psz_session, 0, f_scale, NULL );
1135                         }
1136                     }
1137                 }
1138                 /* unpause, in case it's paused */
1139                 CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1140                              0, 0.0, "" );
1141                 break;
1142             }
1143
1144             if( httpd_ClientIP( cl, ip, NULL ) == NULL ) break;
1145
1146             p_rtsp->b_playing = true;
1147
1148             /* FIXME for != 1 video and 1 audio */
1149             for( int i = 0; i < p_rtsp->i_es; i++ )
1150             {
1151                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1152                     i_port_audio = p_rtsp->es[i]->i_port;
1153                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1154                     i_port_video = p_rtsp->es[i]->i_port;
1155             }
1156
1157             if( p_media->psz_mux )
1158             {
1159                 if( p_media->b_raw )
1160                 {
1161                     if( asprintf( &psz_output,
1162                               "std{access=udp,dst=%s:%i,mux=%s}",
1163                               ip, p_rtsp->i_port_raw, p_media->psz_mux ) < 0 )
1164                         return VLC_ENOMEM;
1165                 }
1166                 else
1167                 {
1168                     if( asprintf( &psz_output,
1169                               "rtp{dst=%s,port=%i,mux=%s}",
1170                               ip, i_port_video, p_media->psz_mux ) < 0 )
1171                         return VLC_ENOMEM;
1172                 }
1173             }
1174             else
1175             {
1176                 if( asprintf( &psz_output,
1177                               "rtp{dst=%s,port-video=%i,port-audio=%i}",
1178                               ip, i_port_video, i_port_audio ) < 0 )
1179                     return VLC_ENOMEM;
1180             }
1181
1182             CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1183                          0, 0.0, psz_output );
1184             free( psz_output );
1185             break;
1186         }
1187
1188         case HTTPD_MSG_DESCRIBE:
1189         {
1190             char *psz_sdp =
1191                 SDPGenerate( p_media, cl );
1192
1193             if( psz_sdp != NULL )
1194             {
1195                 answer->i_status = 200;
1196                 httpd_MsgAdd( answer, "Content-type",  "%s",
1197                               "application/sdp" );
1198
1199                 answer->p_body = (uint8_t *)psz_sdp;
1200                 answer->i_body = strlen( psz_sdp );
1201             }
1202             else
1203             {
1204                 answer->i_status = 500;
1205                 answer->p_body = NULL;
1206                 answer->i_body = 0;
1207             }
1208             break;
1209         }
1210
1211         case HTTPD_MSG_PAUSE:
1212             psz_session = httpd_MsgGet( query, "Session" );
1213             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1214
1215             p_rtsp = RtspClientGet( p_media, psz_session );
1216             if( !p_rtsp ) break;
1217
1218             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1219                          0, 0.0, NULL );
1220
1221             answer->i_status = 200;
1222             answer->i_body = 0;
1223             answer->p_body = NULL;
1224             break;
1225
1226         case HTTPD_MSG_TEARDOWN:
1227             /* for now only multicast so easy again */
1228             answer->i_status = 200;
1229             answer->i_body = 0;
1230             answer->p_body = NULL;
1231
1232             psz_session = httpd_MsgGet( query, "Session" );
1233             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1234
1235             p_rtsp = RtspClientGet( p_media, psz_session );
1236             if( !p_rtsp ) break;
1237
1238             CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1239                          0, 0.0, NULL );
1240             RtspClientDel( p_media, p_rtsp );
1241             break;
1242
1243         case HTTPD_MSG_GETPARAMETER:
1244             answer->i_status = 200;
1245             answer->i_body = 0;
1246             answer->p_body = NULL;
1247             break;
1248
1249         default:
1250             return VLC_EGENERIC;
1251     }
1252
1253     httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1254     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1255     psz_cseq = httpd_MsgGet( query, "Cseq" );
1256     psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1257     httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1258     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1259
1260     if( psz_session )
1261     {
1262          if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
1263              httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1264                p_media->p_vod->p_sys->i_session_timeout );
1265          else
1266               httpd_MsgAdd( answer, "Session", "%s", psz_session );
1267     }
1268
1269     return VLC_SUCCESS;
1270 }
1271
1272 static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1273                            httpd_message_t *answer,
1274                            const httpd_message_t *query )
1275 {
1276     media_es_t *p_es = (media_es_t*)p_args;
1277     vod_media_t *p_media = p_es->p_media;
1278     vod_t *p_vod = p_media->p_vod;
1279     rtsp_client_t *p_rtsp = NULL;
1280     const char *psz_transport = NULL;
1281     const char *psz_playnow = NULL; /* support option: x-playNow */
1282     const char *psz_session = NULL;
1283     const char *psz_position = NULL;
1284     const char *psz_cseq = NULL;
1285     int i_cseq = 0;
1286
1287     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1288
1289     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1290
1291     answer->i_proto   = HTTPD_PROTO_RTSP;
1292     answer->i_version = query->i_version;
1293     answer->i_type    = HTTPD_MSG_ANSWER;
1294     answer->i_body    = 0;
1295     answer->p_body      = NULL;
1296
1297     switch( query->i_type )
1298     {
1299         case HTTPD_MSG_SETUP:
1300             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1301             psz_transport = httpd_MsgGet( query, "Transport" );
1302
1303             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1304
1305             if( strstr( psz_transport, "unicast" ) &&
1306                 strstr( psz_transport, "client_port=" ) )
1307             {
1308                 rtsp_client_t *p_rtsp = NULL;
1309                 rtsp_client_es_t *p_rtsp_es = NULL;
1310                 char ip[NI_MAXNUMERICHOST];
1311                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
1312                                    strlen("client_port=") );
1313
1314                 if( httpd_ClientIP( cl, ip, NULL ) == NULL )
1315                 {
1316                     answer->i_status = 500;
1317                     answer->i_body = 0;
1318                     answer->p_body = NULL;
1319                     break;
1320                 }
1321
1322                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1323                         ip, i_port );
1324
1325                 psz_session = httpd_MsgGet( query, "Session" );
1326                 if( !psz_session || !*psz_session )
1327                 {
1328                     char *psz_new;
1329                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1330                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1331                     {
1332                         answer->i_status = 503;
1333                         answer->i_body = 0;
1334                         answer->p_body = NULL;
1335                         break;
1336                     }
1337 #warning Session ID should be securely random (spoofing risk)
1338                     if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1339                         return VLC_ENOMEM;
1340                     psz_session = psz_new;
1341
1342                     p_rtsp = RtspClientNew( p_media, psz_new );
1343                     if( !p_rtsp )
1344                     {
1345                         answer->i_status = 454;
1346                         answer->i_body = 0;
1347                         answer->p_body = NULL;
1348                         break;
1349                     }
1350                 }
1351                 else
1352                 {
1353                     p_rtsp = RtspClientGet( p_media, psz_session );
1354                     if( !p_rtsp )
1355                     {
1356                         answer->i_status = 454;
1357                         answer->i_body = 0;
1358                         answer->p_body = NULL;
1359                         break;
1360                     }
1361                 }
1362
1363                 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1364                 if( !p_rtsp_es )
1365                 {
1366                     answer->i_status = 500;
1367                     answer->i_body = 0;
1368                     answer->p_body = NULL;
1369                     break;
1370                 }
1371                 p_rtsp_es->i_port = i_port;
1372                 p_rtsp_es->p_media_es = p_es;
1373                 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1374
1375                 answer->i_status = 200;
1376                 answer->i_body = 0;
1377                 answer->p_body = NULL;
1378
1379                 if( p_media->b_raw )
1380                 {
1381                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1382                     {
1383                         httpd_MsgAdd( answer, "Transport",
1384                                      "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1385                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1386                     }
1387                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1388                     {
1389                         httpd_MsgAdd( answer, "Transport",
1390                                      "RAW/RAW/UDP;unicast;client_port=%d-%d",
1391                                      p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1392                     }
1393                 }
1394                 else
1395                 {
1396                     httpd_MsgAdd( answer, "Transport",
1397                                   "RTP/AVP/UDP;unicast;client_port=%d-%d",
1398                                   p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1399                 }
1400             }
1401             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1402             {
1403                 answer->i_status = 461;
1404                 answer->i_body = 0;
1405                 answer->p_body = NULL;
1406             }
1407
1408             /* Intentional fall-through on x-playNow option in RTSP request */
1409             if( !psz_playnow )
1410                 break;
1411
1412         case HTTPD_MSG_PLAY:
1413             /* This is kind of a kludge. Should we only support Aggregate
1414              * Operations ? */
1415             psz_session = httpd_MsgGet( query, "Session" );
1416             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1417
1418             p_rtsp = RtspClientGet( p_media, psz_session );
1419
1420             psz_position = httpd_MsgGet( query, "Range" );
1421             if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1422             if( psz_position )
1423             {
1424                 int64_t i_time = ParseNPT (psz_position + 4);
1425                 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1426                 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1427                              psz_session, i_time, 0.0, NULL );
1428             }
1429
1430             if( !psz_playnow )
1431             {
1432                 answer->i_status = 200;
1433                 answer->i_body = 0;
1434                 answer->p_body = NULL;
1435             }
1436             break;
1437
1438         case HTTPD_MSG_TEARDOWN:
1439             answer->i_status = 200;
1440             answer->i_body = 0;
1441             answer->p_body = NULL;
1442
1443             psz_session = httpd_MsgGet( query, "Session" );
1444             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1445
1446             p_rtsp = RtspClientGet( p_media, psz_session );
1447             if( !p_rtsp ) break;
1448
1449             for( int i = 0; i < p_rtsp->i_es; i++ )
1450             {
1451                 if( p_rtsp->es[i]->p_media_es == p_es )
1452                 {
1453                     TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, p_rtsp->es[i] );
1454                     break;
1455                 }
1456             }
1457
1458             if( !p_rtsp->i_es )
1459             {
1460                 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1461                              0, 0.0, NULL );
1462                 RtspClientDel( p_media, p_rtsp );
1463             }
1464             break;
1465
1466         case HTTPD_MSG_PAUSE:
1467             /* This is kind of a kludge. Should we only support Aggregate
1468              * Operations ? */
1469             psz_session = httpd_MsgGet( query, "Session" );
1470             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1471
1472             p_rtsp = RtspClientGet( p_media, psz_session );
1473             if( !p_rtsp ) break;
1474
1475             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1476                          0, 0.0, NULL );
1477
1478             answer->i_status = 200;
1479             answer->i_body = 0;
1480             answer->p_body = NULL;
1481             break;
1482
1483         default:
1484             return VLC_EGENERIC;
1485             break;
1486     }
1487
1488     httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1489     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1490     psz_cseq = httpd_MsgGet( query, "Cseq" );
1491     if (psz_cseq)
1492         i_cseq = atoi( psz_cseq );
1493     else
1494         i_cseq = 0;
1495     httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1496     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1497
1498     if( psz_session )
1499         httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1500
1501     return VLC_SUCCESS;
1502 }
1503
1504 /*****************************************************************************
1505  * SDPGenerate: TODO
1506  * FIXME: need to be moved to a common place ?
1507  *****************************************************************************/
1508 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1509 {
1510     char *psz_sdp, ip[NI_MAXNUMERICHOST];
1511     const char *psz_control;
1512     int port;
1513
1514     if( httpd_ServerIP( cl, ip, &port ) == NULL )
1515         return NULL;
1516
1517     bool ipv6 = ( strchr( ip, ':' ) != NULL );
1518
1519     psz_control = ipv6 ? p_media->psz_rtsp_control_v6
1520                        : p_media->psz_rtsp_control_v4;
1521
1522     /* Dummy destination address for RTSP */
1523     struct sockaddr_storage dst;
1524     socklen_t dstlen = ipv6 ? sizeof( struct sockaddr_in6 )
1525                             : sizeof( struct sockaddr_in );
1526     memset (&dst, 0, dstlen);
1527     dst.ss_family = ipv6 ? AF_INET6 : AF_INET;
1528 #ifdef HAVE_SA_LEN
1529     dst.ss_len = dstlen;
1530 #endif
1531
1532     psz_sdp = vlc_sdp_Start( VLC_OBJECT( p_media->p_vod ), "sout-rtp-",
1533                              NULL, 0, (struct sockaddr *)&dst, dstlen );
1534     if( psz_sdp == NULL )
1535         return NULL;
1536
1537     if( p_media->i_length > 0 )
1538     {
1539         lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
1540         sdp_AddAttribute( &psz_sdp, "range","npt=0-%lld.%03u", d.quot,
1541                           (unsigned)d.rem );
1542     }
1543
1544     for( int i = 0; i < p_media->i_es; i++ )
1545     {
1546         media_es_t *p_es = p_media->es[i];
1547         const char *mime_major; /* major MIME type */
1548
1549         switch( p_es->fmt.i_cat )
1550         {
1551             case VIDEO_ES:
1552                 mime_major = "video";
1553                 break;
1554             case AUDIO_ES:
1555                 mime_major = "audio";
1556                 break;
1557             case SPU_ES:
1558                 mime_major = "text";
1559                 break;
1560             default:
1561                 continue;
1562         }
1563
1564         sdp_AddMedia( &psz_sdp, mime_major, "RTP/AVP", 0 /* p_es->i_port */,
1565                       p_es->i_payload_type, false, 0,
1566                       p_es->psz_ptname, p_es->i_clock_rate, p_es->i_channels,
1567                       p_es->psz_fmtp );
1568
1569         sdp_AddAttribute( &psz_sdp, "control", psz_control, ip, port, i );
1570     }
1571
1572     return psz_sdp;
1573 }