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