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 #define _GNU_SOURCE
  29 #include <stdlib.h>
  30
  31 #include <errno.h>
  32
  33 #include <vlc/vlc.h>
  34 #include <vlc_input.h>
  35 #include <vlc_sout.h>
  36 #include <vlc_block.h>
  37
  38 #include "vlc_httpd.h"
  39 #include "vlc_vod.h"
  40 #include "vlc_url.h"
  41 #include <vlc_network.h>
  42 #include <vlc_charset.h>
  43
  44 /*****************************************************************************
  45  * Module descriptor
  46  *****************************************************************************/
  47 static int  Open ( vlc_object_t * );
  48 static void Close( vlc_object_t * );
  49
  50 #define HOST_TEXT N_( "RTSP host address" )
  51 /// \bug [String] extra space
  52 #define HOST_LONGTEXT N_( \
  53     "This defines the address, port and path the RTSP VOD server will listen " \
  54     "on.\nSyntax is address:port/path. The default is to listen on all "\
  55     "interfaces (address 0.0.0.0), on port 554, with no path.\n To listen " \
  56     "only on the local interface, use \"localhost\" as address." )
  57
  58 #define THROTLE_TEXT N_( "Maximum number of connections" )
  59 #define THROTLE_LONGTEXT N_( "This limits the maximum number of clients " \
  60     "that can connect to the RTSP VOD. 0 means no limit."  )
  61
  62 #define RAWMUX_TEXT N_( "MUX for RAW RTSP transport" )
  63
  64 #define SESSION_TIMEOUT_TEXT N_( "Sets the timeout option in the RTSP " \
  65     "session string" )
  66 #define SESSION_TIMEOUT_LONGTEXT N_( "Defines what timeout option to add " \
  67     "to the RTSP session ID string. Setting it to a negative number removes " \
  68     "the timeout option entirely. This is needed by some IPTV STBs (such as " \
  69     "those made by HansunTech) which get confused by it. The default is 5." )
  70
  71 vlc_module_begin();
  72     set_shortname( _("RTSP VoD" ) );
  73     set_description( _("RTSP VoD server") );
  74     set_category( CAT_SOUT );
  75     set_subcategory( SUBCAT_SOUT_VOD );
  76     set_capability( "vod server", 1 );
  77     set_callbacks( Open, Close );
  78     add_shortcut( "rtsp" );
  79     add_string ( "rtsp-host", NULL, NULL, HOST_TEXT, HOST_LONGTEXT, VLC_TRUE );
  80     add_string( "rtsp-raw-mux", "ts", NULL, RAWMUX_TEXT, RAWMUX_TEXT, VLC_TRUE );
  81     add_integer( "rtsp-throttle-users", 0, NULL, THROTLE_TEXT,
  82                                            THROTLE_LONGTEXT, VLC_TRUE );
  83     add_integer( "rtsp-session-timeout", 5, NULL, SESSION_TIMEOUT_TEXT,
  84                  SESSION_TIMEOUT_LONGTEXT, VLC_TRUE );
  85 vlc_module_end();
  86
  87 /*****************************************************************************
  88  * Exported prototypes
  89  *****************************************************************************/
  90
  91 typedef struct media_es_t media_es_t;
  92
  93 typedef struct
  94 {
  95     media_es_t *p_media_es;
  96     char *psz_ip;
  97     int i_port;
  98
  99 } rtsp_client_es_t;
 100
 101 typedef struct
 102 {
 103     char *psz_session;
 104     int64_t i_last; /* for timeout */
 105
 106     vlc_bool_t b_playing; /* is it in "play" state */
 107     vlc_bool_t b_paused; /* is it in "pause" state */
 108
 109     int i_es;
 110     rtsp_client_es_t **es;
 111
 112 } rtsp_client_t;
 113
 114 struct media_es_t
 115 {
 116     /* VoD server */
 117     vod_t *p_vod;
 118
 119     /* RTSP server */
 120     httpd_url_t *p_rtsp_url;
 121
 122     vod_media_t *p_media;
 123
 124     es_format_t fmt;
 125     int         i_port;
 126     uint8_t     i_payload_type;
 127     char        *psz_rtpmap;
 128     char        *psz_fmtp;
 129
 130 };
 131
 132 struct vod_media_t
 133 {
 134     int id;
 135
 136     /* VoD server */
 137     vod_t *p_vod;
 138
 139     /* RTSP server */
 140     httpd_url_t  *p_rtsp_url;
 141     char         *psz_rtsp_control_v4;
 142     char         *psz_rtsp_control_v6;
 143     char         *psz_rtsp_path;
 144
 145     int  i_port;
 146     int  i_port_audio;
 147     int  i_port_video;
 148     int  i_ttl;
 149     int  i_payload_type;
 150
 151     int64_t i_sdp_id;
 152     int     i_sdp_version;
 153
 154     vlc_bool_t b_multicast;
 155
 156     vlc_mutex_t lock;
 157
 158     /* ES list */
 159     int        i_es;
 160     media_es_t **es;
 161     char       *psz_mux;
 162     vlc_bool_t  b_raw;
 163
 164     /* RTSP client */
 165     int           i_rtsp;
 166     rtsp_client_t **rtsp;
 167
 168     /* Infos */
 169     char *psz_session_name;
 170     char *psz_session_description;
 171     char *psz_session_url;
 172     char *psz_session_email;
 173     mtime_t i_length;
 174 };
 175
 176 struct vod_sys_t
 177 {
 178     /* RTSP server */
 179     httpd_host_t *p_rtsp_host;
 180     char *psz_path;
 181     int i_port;
 182     int i_throttle_users;
 183     int i_connections;
 184
 185     char *psz_raw_mux;
 186
 187     int i_session_timeout;
 188
 189     /* List of media */
 190     vlc_mutex_t lock_media;
 191     int i_media_id;
 192     int i_media;
 193     vod_media_t **media;
 194
 195     /* */
 196     block_fifo_t *p_fifo_cmd;
 197 };
 198
 199 /* rtsp delayed command (to avoid deadlock between vlm/httpd) */
 200 typedef enum
 201 {
 202     RTSP_CMD_TYPE_NONE,  /* Exit requested */
 203
 204     RTSP_CMD_TYPE_PLAY,
 205     RTSP_CMD_TYPE_PAUSE,
 206     RTSP_CMD_TYPE_STOP,
 207     RTSP_CMD_TYPE_SEEK,
 208     RTSP_CMD_TYPE_REWIND,
 209     RTSP_CMD_TYPE_FORWARD,
 210 } rtsp_cmd_type_t;
 211
 212 static vod_media_t *MediaNew( vod_t *, const char *, input_item_t * );
 213 static void         MediaDel( vod_t *, vod_media_t * );
 214 static int          MediaAddES( vod_t *, vod_media_t *, es_format_t * );
 215 static void         MediaDelES( vod_t *, vod_media_t *, es_format_t * );
 216
 217 static void CommandThread( vlc_object_t *p_this );
 218 static void CommandPush( vod_t *, rtsp_cmd_type_t, vod_media_t *, const char *psz_session,
 219                          double f_arg, const char *psz_arg );
 220
 221 static rtsp_client_t *RtspClientNew( vod_media_t *, char * );
 222 static rtsp_client_t *RtspClientGet( vod_media_t *, const char * );
 223 static void           RtspClientDel( vod_media_t *, rtsp_client_t * );
 224
 225 static int RtspCallback( httpd_callback_sys_t *, httpd_client_t *,
 226                          httpd_message_t *, httpd_message_t * );
 227 static int RtspCallbackES( httpd_callback_sys_t *, httpd_client_t *,
 228                            httpd_message_t *, httpd_message_t * );
 229
 230 static char *SDPGenerate( const vod_media_t *, httpd_client_t *cl );
 231
 232 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
 233 {
 234     static const char hex[16] = "0123456789abcdef";
 235     int i;
 236
 237     for( i = 0; i < i_data; i++ )
 238     {
 239         s[2*i+0] = hex[(p_data[i]>>4)&0xf];
 240         s[2*i+1] = hex[(p_data[i]   )&0xf];
 241     }
 242     s[2*i_data] = '\0';
 243 }
 244
 245 /*****************************************************************************
 246  * Open: Starts the RTSP server module
 247  *****************************************************************************/
 248 static int Open( vlc_object_t *p_this )
 249 {
 250     vod_t *p_vod = (vod_t *)p_this;
 251     vod_sys_t *p_sys = 0;
 252     char *psz_url = 0;
 253     vlc_url_t url;
 254
 255     psz_url = config_GetPsz( p_vod, "rtsp-host" );
 256     vlc_UrlParse( &url, psz_url, 0 );
 257     if( psz_url ) free( psz_url );
 258
 259     if( url.i_port <= 0 ) url.i_port = 554;
 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     p_sys->p_rtsp_host =
 274         httpd_HostNew( VLC_OBJECT(p_vod), url.psz_host, url.i_port );
 275     if( !p_sys->p_rtsp_host )
 276     {
 277         msg_Err( p_vod, "cannot create RTSP server (%s:%i)",
 278                  url.psz_host, url.i_port );
 279         goto error;
 280     }
 281
 282     p_sys->psz_path = strdup( url.psz_path ? url.psz_path : "/" );
 283     p_sys->i_port = url.i_port;
 284
 285     vlc_UrlClean( &url );
 286
 287     vlc_mutex_init( p_vod, &p_sys->lock_media );
 288
 289     TAB_INIT( p_sys->i_media, p_sys->media );
 290     p_sys->i_media_id = 0;
 291
 292     p_vod->pf_media_new = MediaNew;
 293     p_vod->pf_media_del = MediaDel;
 294     p_vod->pf_media_add_es = MediaAddES;
 295     p_vod->pf_media_del_es = MediaDelES;
 296
 297     p_sys->p_fifo_cmd = block_FifoNew( p_vod );
 298     if( vlc_thread_create( p_vod, "rtsp vod thread", CommandThread,
 299                            VLC_THREAD_PRIORITY_LOW, VLC_FALSE ) )
 300     {
 301         msg_Err( p_vod, "cannot spawn rtsp vod thread" );
 302         block_FifoRelease( p_sys->p_fifo_cmd );
 303         free( p_sys->psz_path );
 304         goto error;
 305     }
 306
 307     return VLC_SUCCESS;
 308
 309 error:
 310     if( p_sys && p_sys->p_rtsp_host ) httpd_HostDelete( p_sys->p_rtsp_host );
 311     if( p_sys && p_sys->psz_raw_mux ) free( p_sys->psz_raw_mux );
 312     if( p_sys ) free( p_sys );
 313     vlc_UrlClean( &url );
 314
 315     return VLC_EGENERIC;
 316 }
 317
 318 /*****************************************************************************
 319  * Close:
 320  *****************************************************************************/
 321 static void Close( vlc_object_t * p_this )
 322 {
 323     vod_t *p_vod = (vod_t *)p_this;
 324     vod_sys_t *p_sys = p_vod->p_sys;
 325
 326     /* Stop command thread */
 327     p_vod->b_die = VLC_TRUE;
 328     CommandPush( p_vod, RTSP_CMD_TYPE_NONE, NULL, NULL, 0.0, NULL );
 329     vlc_thread_join( p_vod );
 330
 331     block_FifoRelease( p_sys->p_fifo_cmd );
 332
 333     httpd_HostDelete( p_sys->p_rtsp_host );
 334     var_Destroy( p_this, "rtsp-session-timeout" );
 335     var_Destroy( p_this, "rtsp-throttle-users" );
 336     var_Destroy( p_this, "rtsp-raw-mux" );
 337
 338     /* Check VLM is not buggy */
 339     if( p_sys->i_media > 0 )
 340         msg_Err( p_vod, "rtsp vod leaking %d medias", p_sys->i_media );
 341     TAB_CLEAN( p_sys->i_media, p_sys->media );
 342
 343     vlc_mutex_destroy( &p_sys->lock_media );
 344
 345     free( p_sys->psz_path );
 346     free( p_sys->psz_raw_mux );
 347     free( p_sys );
 348 }
 349
 350 /*****************************************************************************
 351  * Media handling
 352  *****************************************************************************/
 353 static vod_media_t *MediaNew( vod_t *p_vod, const char *psz_name,
 354                               input_item_t *p_item )
 355 {
 356     vod_sys_t *p_sys = p_vod->p_sys;
 357     vod_media_t *p_media = malloc( sizeof(vod_media_t) );
 358     int i;
 359
 360     if( !p_media )
 361     {
 362         msg_Err( p_vod, "not enough memory" );
 363         return NULL;
 364     }
 365
 366     memset( p_media, 0, sizeof(vod_media_t) );
 367     p_media->id = p_sys->i_media_id++;
 368     TAB_INIT( p_media->i_es, p_media->es );
 369     p_media->psz_mux = 0;
 370     TAB_INIT( p_media->i_rtsp, p_media->rtsp );
 371     p_media->b_raw = VLC_FALSE;
 372
 373     asprintf( &p_media->psz_rtsp_path, "%s%s", p_sys->psz_path, psz_name );
 374     p_media->p_rtsp_url =
 375         httpd_UrlNewUnique( p_sys->p_rtsp_host, p_media->psz_rtsp_path, NULL,
 376                             NULL, NULL );
 377
 378     if( !p_media->p_rtsp_url )
 379     {
 380         msg_Err( p_vod, "cannot create RTSP url (%s)", p_media->psz_rtsp_path);
 381         free( p_media->psz_rtsp_path );
 382         free( p_media );
 383         return NULL;
 384     }
 385
 386     msg_Dbg( p_vod, "created RTSP url: %s", p_media->psz_rtsp_path );
 387
 388     asprintf( &p_media->psz_rtsp_control_v4,
 389                "a=control:rtsp://%%s:%d%s/trackID=%%d\r\n",
 390                p_sys->i_port, p_media->psz_rtsp_path );
 391     asprintf( &p_media->psz_rtsp_control_v6,
 392                "a=control:rtsp://[%%s]:%d%s/trackID=%%d\r\n",
 393               p_sys->i_port, p_media->psz_rtsp_path );
 394
 395     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_SETUP,
 396                     RtspCallback, (void*)p_media );
 397     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_DESCRIBE,
 398                     RtspCallback, (void*)p_media );
 399     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PLAY,
 400                     RtspCallback, (void*)p_media );
 401     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PAUSE,
 402                     RtspCallback, (void*)p_media );
 403     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_GETPARAMETER,
 404                     RtspCallback, (void*)p_media );
 405     httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 406                     RtspCallback, (void*)p_media );
 407
 408     p_media->p_vod = p_vod;
 409
 410     vlc_mutex_lock( &p_sys->lock_media );
 411     TAB_APPEND( p_sys->i_media, p_sys->media, p_media );
 412     vlc_mutex_unlock( &p_sys->lock_media );
 413
 414     vlc_mutex_init( p_vod, &p_media->lock );
 415     p_media->psz_session_name = strdup("");
 416     p_media->psz_session_description = strdup("");
 417     p_media->psz_session_url = strdup("");
 418     p_media->psz_session_email = strdup("");
 419
 420     p_media->i_port_audio = 1234;
 421     p_media->i_port_video = 1236;
 422     p_media->i_port       = 1238;
 423     p_media->i_payload_type = 96;
 424
 425     p_media->i_sdp_id = mdate();
 426     p_media->i_sdp_version = 1;
 427     p_media->i_length = p_item->i_duration;
 428
 429     vlc_mutex_lock( &p_item->lock );
 430     msg_Dbg( p_vod, "media has %i declared ES", p_item->i_es );
 431     for( i = 0; i < p_item->i_es; i++ )
 432     {
 433         MediaAddES( p_vod, p_media, p_item->es[i] );
 434     }
 435     vlc_mutex_unlock( &p_item->lock );
 436
 437     return p_media;
 438 }
 439
 440 static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
 441 {
 442     vod_sys_t *p_sys = p_vod->p_sys;
 443
 444     msg_Dbg( p_vod, "deleting media: %s", p_media->psz_rtsp_path );
 445
 446     vlc_mutex_lock( &p_sys->lock_media );
 447     TAB_REMOVE( p_sys->i_media, p_sys->media, p_media );
 448     vlc_mutex_unlock( &p_sys->lock_media );
 449
 450     while( p_media->i_rtsp > 0 )
 451         RtspClientDel( p_media, p_media->rtsp[0] );
 452     TAB_CLEAN( p_media->i_rtsp, p_media->rtsp );
 453     httpd_UrlDelete( p_media->p_rtsp_url );
 454     if( p_media->psz_rtsp_path ) free( p_media->psz_rtsp_path );
 455     if( p_media->psz_rtsp_control_v6 ) free( p_media->psz_rtsp_control_v6 );
 456     if( p_media->psz_rtsp_control_v4 ) free( p_media->psz_rtsp_control_v4 );
 457
 458     while( p_media->i_es )
 459         MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );
 460     TAB_CLEAN( p_media->i_es, p_media->es );
 461
 462     vlc_mutex_destroy( &p_media->lock );
 463
 464     if( p_media->psz_session_name ) free( p_media->psz_session_name );
 465     if( p_media->psz_session_description ) free( p_media->psz_session_description );
 466     if( p_media->psz_session_url ) free( p_media->psz_session_url );
 467     if( p_media->psz_session_email ) free( p_media->psz_session_email );
 468     if( p_media->psz_mux ) free( p_media->psz_mux );
 469     free( p_media );
 470 }
 471
 472 static int MediaAddES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt )
 473 {
 474     media_es_t *p_es = malloc( sizeof(media_es_t) );
 475     char *psz_urlc;
 476
 477     if( !p_es ) return VLC_ENOMEM;
 478     memset( p_es, 0, sizeof(media_es_t) );
 479
 480     if( p_media->psz_mux ) free( p_media->psz_mux );
 481     p_media->psz_mux = NULL;
 482
 483     /* TODO: update SDP, etc... */
 484     asprintf( &psz_urlc, "%s/trackID=%d",
 485               p_media->psz_rtsp_path, p_media->i_es );
 486     msg_Dbg( p_vod, "  - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
 487
 488     switch( p_fmt->i_codec )
 489     {
 490         case VLC_FOURCC( 's', '1', '6', 'b' ):
 491             if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
 492             {
 493                 p_es->i_payload_type = 11;
 494             }
 495             else if( p_fmt->audio.i_channels == 2 && p_fmt->audio.i_rate == 44100 )
 496             {
 497                 p_es->i_payload_type = 10;
 498             }
 499             else
 500             {
 501                 p_es->i_payload_type = p_media->i_payload_type++;
 502             }
 503             p_es->psz_rtpmap = malloc( strlen( "L16/*/*" ) + 20+1 );
 504             sprintf( p_es->psz_rtpmap, "L16/%d/%d", p_fmt->audio.i_rate,
 505                     p_fmt->audio.i_channels );
 506             break;
 507         case VLC_FOURCC( 'u', '8', ' ', ' ' ):
 508             p_es->i_payload_type = p_media->i_payload_type++;
 509             p_es->psz_rtpmap = malloc( strlen( "L8/*/*" ) + 20+1 );
 510             sprintf( p_es->psz_rtpmap, "L8/%d/%d", p_fmt->audio.i_rate,
 511                     p_fmt->audio.i_channels );
 512             break;
 513         case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
 514             p_es->i_payload_type = 14;
 515             p_es->psz_rtpmap = strdup( "MPA/90000" );
 516             break;
 517         case VLC_FOURCC( 'm', 'p', 'g', 'v' ):
 518             p_es->i_payload_type = 32;
 519             p_es->psz_rtpmap = strdup( "MPV/90000" );
 520             break;
 521         case VLC_FOURCC( 'a', '5', '2', ' ' ):
 522             p_es->i_payload_type = p_media->i_payload_type++;
 523             p_es->psz_rtpmap = strdup( "ac3/90000" );
 524             break;
 525         case VLC_FOURCC( 'H', '2', '6', '3' ):
 526             p_es->i_payload_type = p_media->i_payload_type++;
 527             p_es->psz_rtpmap = strdup( "H263-1998/90000" );
 528             break;
 529         case VLC_FOURCC( 'h', '2', '6', '4' ):
 530             p_es->i_payload_type = p_media->i_payload_type++;
 531             p_es->psz_rtpmap = strdup( "H264/90000" );
 532             p_es->psz_fmtp = NULL;
 533             /* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
 534             if( p_fmt->i_extra > 0 )
 535             {
 536                 uint8_t *p_buffer = p_fmt->p_extra;
 537                 int     i_buffer = p_fmt->i_extra;
 538                 char    *p_64_sps = NULL;
 539                 char    *p_64_pps = NULL;
 540                 char    hexa[6+1];
 541
 542                 while( i_buffer > 4 &&
 543                        p_buffer[0] == 0 && p_buffer[1] == 0 &&
 544                        p_buffer[2] == 0 && p_buffer[3] == 1 )
 545                 {
 546                     const int i_nal_type = p_buffer[4]&0x1f;
 547                     int i_offset;
 548                     int i_size      = 0;
 549
 550                     i_size = i_buffer;
 551                     for( i_offset = 4; i_offset+3 < i_buffer ; i_offset++)
 552                     {
 553                         if( p_buffer[i_offset] == 0 && p_buffer[i_offset+1] == 0 && p_buffer[i_offset+2] == 0 && p_buffer[i_offset+3] == 1 )
 554                         {
 555                             /* we found another startcode */
 556                             i_size = i_offset;
 557                             break;
 558                         }
 559                     }
 560                     if( i_nal_type == 7 )
 561                     {
 562                         p_64_sps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 563                         sprintf_hexa( hexa, &p_buffer[5], 3 );
 564                     }
 565                     else if( i_nal_type == 8 )
 566                     {
 567                         p_64_pps = vlc_b64_encode_binary( &p_buffer[4], i_size - 4 );
 568                     }
 569                     i_buffer -= i_size;
 570                     p_buffer += i_size;
 571                 }
 572                 /* */
 573                 if( p_64_sps && p_64_pps )
 574                     asprintf( &p_es->psz_fmtp, "packetization-mode=1;profile-level-id=%s;sprop-parameter-sets=%s,%s;", hexa, p_64_sps, p_64_pps );
 575                 if( p_64_sps )
 576                     free( p_64_sps );
 577                 if( p_64_pps )
 578                     free( p_64_pps );
 579             }
 580             if( !p_es->psz_fmtp )
 581                 p_es->psz_fmtp = strdup( "packetization-mode=1" );
 582             break;
 583         case VLC_FOURCC( 'm', 'p', '4', 'v' ):
 584             p_es->i_payload_type = p_media->i_payload_type++;
 585             p_es->psz_rtpmap = strdup( "MP4V-ES/90000" );
 586             if( p_fmt->i_extra > 0 )
 587             {
 588                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 589                 p_es->psz_fmtp = malloc( 100 + 2 * p_fmt->i_extra );
 590                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 591                 sprintf( p_es->psz_fmtp,
 592                         "profile-level-id=3; config=%s;", p_hexa );
 593                 free( p_hexa );
 594             }
 595             break;
 596         case VLC_FOURCC( 'm', 'p', '4', 'a' ):
 597             p_es->i_payload_type = p_media->i_payload_type++;
 598             p_es->psz_rtpmap = malloc( strlen( "mpeg4-generic/" ) + 12 );
 599             sprintf( p_es->psz_rtpmap, "mpeg4-generic/%d", p_fmt->audio.i_rate );
 600             if( p_fmt->i_extra > 0 )
 601             {
 602                 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
 603                 p_es->psz_fmtp = malloc( 200 + 2 * p_fmt->i_extra );
 604                 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
 605                 sprintf( p_es->psz_fmtp,
 606                         "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
 607                         "config=%s; SizeLength=13;IndexLength=3; "
 608                         "IndexDeltaLength=3; Profile=1;", p_hexa );
 609                 free( p_hexa );
 610             }
 611             break;
 612         case VLC_FOURCC( 'm', 'p', '2', 't' ):
 613             p_media->psz_mux = strdup("ts");
 614             p_es->i_payload_type = 33;
 615             p_es->psz_rtpmap = strdup( "MP2T/90000" );
 616             break;
 617         case VLC_FOURCC( 'm', 'p', '2', 'p' ):
 618             p_media->psz_mux = strdup("ps");
 619             p_es->i_payload_type = p_media->i_payload_type++;
 620             p_es->psz_rtpmap = strdup( "MP2P/90000" );
 621             break;
 622         case VLC_FOURCC( 's', 'a', 'm', 'r' ):
 623             p_es->i_payload_type = p_media->i_payload_type++;
 624             p_es->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
 625                                     "AMR/8000/2" : "AMR/8000" );
 626             p_es->psz_fmtp = strdup( "octet-align=1" );
 627             break;
 628         case VLC_FOURCC( 's', 'a', 'w', 'b' ):
 629             p_es->i_payload_type = p_media->i_payload_type++;
 630             p_es->psz_rtpmap = strdup( p_fmt->audio.i_channels == 2 ?
 631                                     "AMR-WB/16000/2" : "AMR-WB/16000" );
 632             p_es->psz_fmtp = strdup( "octet-align=1" );
 633             break;
 634
 635         default:
 636             msg_Err( p_vod, "cannot add this stream (unsupported "
 637                     "codec: %4.4s)", (char*)&p_fmt->i_codec );
 638             free( p_es );
 639             return VLC_EGENERIC;
 640     }
 641
 642     p_es->p_rtsp_url =
 643         httpd_UrlNewUnique( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL,
 644                             NULL );
 645
 646     if( !p_es->p_rtsp_url )
 647     {
 648         msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
 649         free( psz_urlc );
 650         free( p_es );
 651         return VLC_EGENERIC;
 652     }
 653     free( psz_urlc );
 654
 655     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
 656                     RtspCallbackES, (void*)p_es );
 657     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
 658                     RtspCallbackES, (void*)p_es );
 659     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
 660                     RtspCallbackES, (void*)p_es );
 661     httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
 662                     RtspCallbackES, (void*)p_es );
 663
 664     es_format_Copy( &p_es->fmt, p_fmt );
 665     p_es->p_vod = p_vod;
 666     p_es->p_media = p_media;
 667
 668 #if 0
 669     /* Choose the port */
 670     if( p_fmt->i_cat == AUDIO_ES && p_media->i_port_audio > 0 )
 671     {
 672         p_es->i_port = p_media->i_port_audio;
 673         p_media->i_port_audio = 0;
 674     }
 675     else if( p_fmt->i_cat == VIDEO_ES && p_media->i_port_video > 0 )
 676     {
 677         p_es->i_port = p_media->i_port_video;
 678         p_media->i_port_video = 0;
 679     }
 680     while( !p_es->i_port )
 681     {
 682         if( p_media->i_port != p_media->i_port_audio &&
 683             p_media->i_port != p_media->i_port_video )
 684         {
 685             p_es->i_port = p_media->i_port;
 686             p_media->i_port += 2;
 687             break;
 688         }
 689         p_media->i_port += 2;
 690     }
 691 #else
 692
 693     p_es->i_port = 0;
 694 #endif
 695
 696     vlc_mutex_lock( &p_media->lock );
 697     TAB_APPEND( p_media->i_es, p_media->es, p_es );
 698     vlc_mutex_unlock( &p_media->lock );
 699
 700     p_media->i_sdp_version++;
 701
 702     return VLC_SUCCESS;
 703 }
 704
 705 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
 706 {
 707     media_es_t *p_es = NULL;
 708     int i;
 709
 710     /* Find the ES */
 711     for( i = 0; i < p_media->i_es; i++ )
 712     {
 713         if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
 714             p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
 715             p_media->es[i]->fmt.i_id == p_fmt->i_id )
 716         {
 717             p_es = p_media->es[i];
 718         }
 719     }
 720     if( !p_es ) return;
 721
 722     msg_Dbg( p_vod, "  - Removing ES %4.4s", (char *)&p_fmt->i_codec );
 723
 724     vlc_mutex_lock( &p_media->lock );
 725     TAB_REMOVE( p_media->i_es, p_media->es, p_es );
 726     vlc_mutex_unlock( &p_media->lock );
 727
 728     if( p_es->psz_rtpmap ) free( p_es->psz_rtpmap );
 729     if( p_es->psz_fmtp ) free( p_es->psz_fmtp );
 730     p_media->i_sdp_version++;
 731
 732     if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
 733     es_format_Clean( &p_es->fmt );
 734 }
 735
 736 /* */
 737 typedef struct
 738 {
 739     int i_type;
 740     int i_media_id;
 741     //vod_media_t *p_media;
 742     char *psz_session;
 743     char *psz_arg;
 744     double f_arg;
 745 } rtsp_cmd_t;
 746
 747 static void CommandPush( vod_t *p_vod, rtsp_cmd_type_t i_type, vod_media_t *p_media, const char *psz_session,
 748                          double f_arg, const char *psz_arg )
 749 {
 750     rtsp_cmd_t cmd;
 751     block_t *p_cmd;
 752
 753     memset( &cmd, 0, sizeof(cmd) );
 754     cmd.i_type = i_type;
 755     if( p_media )
 756         cmd.i_media_id = p_media->id;
 757     if( psz_session )
 758         cmd.psz_session = strdup(psz_session);
 759     cmd.f_arg = f_arg;
 760     if( psz_arg )
 761         cmd.psz_arg = strdup(psz_arg);
 762
 763     p_cmd = block_New( p_vod, sizeof(rtsp_cmd_t) );
 764     memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
 765
 766     block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
 767 }
 768
 769 static void CommandThread( vlc_object_t *p_this )
 770 {
 771     vod_t *p_vod = (vod_t*)p_this;
 772     vod_sys_t *p_sys = p_vod->p_sys;
 773
 774     while( !p_vod->b_die )
 775     {
 776         block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
 777         rtsp_cmd_t cmd;
 778         vod_media_t *p_media = NULL;
 779         int i;
 780
 781         if( !p_block_cmd )
 782             break;
 783
 784         memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
 785         block_Release( p_block_cmd );
 786
 787         if( cmd.i_type == RTSP_CMD_TYPE_NONE )
 788             break;
 789
 790         /* */
 791         vlc_mutex_lock( &p_sys->lock_media );
 792         for( i = 0; i < p_sys->i_media; i++ )
 793         {
 794             if( p_sys->media[i]->id == cmd.i_media_id )
 795                 break;
 796         }
 797         if( i >= p_sys->i_media )
 798             goto next;
 799         p_media = p_sys->media[i];
 800
 801         switch( cmd.i_type )
 802         {
 803         case RTSP_CMD_TYPE_PLAY:
 804             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 805                               VOD_MEDIA_PLAY, cmd.psz_arg );
 806             break;
 807         case RTSP_CMD_TYPE_PAUSE:
 808             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 809                               VOD_MEDIA_PAUSE );
 810             break;
 811
 812         case RTSP_CMD_TYPE_STOP:
 813             vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
 814             break;
 815
 816         case RTSP_CMD_TYPE_SEEK:
 817             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 818                               VOD_MEDIA_SEEK, cmd.f_arg );
 819             break;
 820
 821         case RTSP_CMD_TYPE_REWIND:
 822             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 823                               VOD_MEDIA_REWIND, cmd.f_arg );
 824             break;
 825
 826         case RTSP_CMD_TYPE_FORWARD:
 827             vod_MediaControl( p_vod, p_media, cmd.psz_session,
 828                               VOD_MEDIA_FORWARD, cmd.f_arg );
 829             break;
 830
 831         default:
 832             break;
 833         }
 834
 835     next:
 836         vlc_mutex_unlock( &p_sys->lock_media );
 837         if( cmd.psz_session )
 838             free( cmd.psz_session );
 839         if( cmd.psz_arg )
 840             free( cmd.psz_arg );
 841     }
 842 }
 843
 844 /****************************************************************************
 845  * RTSP server implementation
 846  ****************************************************************************/
 847 static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
 848 {
 849     rtsp_client_t *p_rtsp = malloc( sizeof(rtsp_client_t) );
 850
 851     if( !p_rtsp ) return NULL;
 852     memset( p_rtsp, 0, sizeof(rtsp_client_t) );
 853     p_rtsp->es = 0;
 854
 855     p_rtsp->psz_session = psz_session;
 856     TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 857
 858     p_media->p_vod->p_sys->i_connections++;
 859     msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
 860              psz_session, p_media->p_vod->p_sys->i_throttle_users );
 861
 862     return p_rtsp;
 863 }
 864
 865 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
 866 {
 867     int i;
 868
 869     for( i = 0; psz_session && i < p_media->i_rtsp; i++ )
 870     {
 871         if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
 872             return p_media->rtsp[i];
 873     }
 874
 875     return NULL;
 876 }
 877
 878 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
 879 {
 880     p_media->p_vod->p_sys->i_connections--;
 881     msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
 882              p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
 883
 884     while( p_rtsp->i_es-- )
 885     {
 886         if( p_rtsp->es[p_rtsp->i_es]->psz_ip )
 887             free( p_rtsp->es[p_rtsp->i_es]->psz_ip );
 888         free( p_rtsp->es[p_rtsp->i_es] );
 889         if( !p_rtsp->i_es ) free( p_rtsp->es );
 890     }
 891
 892     TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
 893
 894     free( p_rtsp->psz_session );
 895     free( p_rtsp );
 896 }
 897
 898 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
 899                          httpd_message_t *answer, httpd_message_t *query )
 900 {
 901     vod_media_t *p_media = (vod_media_t*)p_args;
 902     vod_t *p_vod = p_media->p_vod;
 903     const char *psz_transport = NULL;
 904     const char *psz_playnow = NULL; /* support option: x-playNow */
 905     const char *psz_session = NULL;
 906     const char *psz_cseq = NULL;
 907     rtsp_client_t *p_rtsp;
 908     int i_port = 0;
 909     int i_cseq = 0;
 910
 911     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
 912
 913     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
 914
 915     answer->i_proto   = HTTPD_PROTO_RTSP;
 916     answer->i_version = query->i_version;
 917     answer->i_type    = HTTPD_MSG_ANSWER;
 918     answer->i_body    = 0;
 919     answer->p_body    = NULL;
 920
 921     switch( query->i_type )
 922     {
 923         case HTTPD_MSG_SETUP:
 924         {
 925             psz_playnow = httpd_MsgGet( query, "x-playNow" );
 926             psz_transport = httpd_MsgGet( query, "Transport" );
 927             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
 928
 929             if( strstr( psz_transport, "unicast" ) &&
 930                 strstr( psz_transport, "client_port=" ) )
 931             {
 932                 rtsp_client_t *p_rtsp = NULL;
 933                 char ip[NI_MAXNUMERICHOST];
 934                 i_port = atoi( strstr( psz_transport, "client_port=" ) +
 935                                 strlen("client_port=") );
 936
 937                 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
 938                     strstr( psz_transport, "RAW/RAW/UDP" ) )
 939                 {
 940                     if( p_media->psz_mux ) free( p_media->psz_mux );
 941                     p_media->psz_mux = NULL;
 942                     p_media->psz_mux = strdup( p_vod->p_sys->psz_raw_mux );
 943                     p_media->b_raw = VLC_TRUE;
 944                 }
 945
 946                 if( httpd_ClientIP( cl, ip ) == NULL )
 947                 {
 948                     answer->i_status = 500;
 949                     answer->psz_status = strdup( "Internal server error" );
 950                     answer->i_body = 0;
 951                     answer->p_body = NULL;
 952                     break;
 953                 }
 954
 955                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
 956                          ip, i_port );
 957
 958                 psz_session = httpd_MsgGet( query, "Session" );
 959                 if( !psz_session || !*psz_session )
 960                 {
 961                     char *psz_new;
 962                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
 963                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
 964                     {
 965                         answer->i_status = 503;
 966                         answer->psz_status = strdup( "Too many connections" );
 967                         answer->i_body = 0;
 968                         answer->p_body = NULL;
 969                         break;
 970                     }
 971                     asprintf( &psz_new, "%d", rand() );
 972                     psz_session = psz_new;
 973
 974                     p_rtsp = RtspClientNew( p_media, psz_new );
 975                     if( !p_rtsp )
 976                     {
 977                         answer->i_status = 454;
 978                         answer->psz_status = strdup( "Unknown session id" );
 979                         answer->i_body = 0;
 980                         answer->p_body = NULL;
 981                         break;
 982                     }
 983                 }
 984                 else
 985                 {
 986                     p_rtsp = RtspClientGet( p_media, psz_session );
 987                     if( !p_rtsp )
 988                     {
 989                         answer->i_status = 454;
 990                         answer->psz_status = strdup( "Unknown session id" );
 991                         answer->i_body = 0;
 992                         answer->p_body = NULL;
 993                         break;
 994                     }
 995                 }
 996
 997                 answer->i_status = 200;
 998                 answer->psz_status = strdup( "OK" );
 999                 answer->i_body = 0;
1000                 answer->p_body = NULL;
1001
1002                 if( p_media->b_raw )
1003                 {
1004                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1005                     {
1006                         httpd_MsgAdd( answer, "Transport", "MP2T/H2221/UDP;client_port=%d-%d",
1007                                       i_port, i_port + 1 );
1008                     }
1009                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1010                     {
1011                         httpd_MsgAdd( answer, "Transport", "RAW/RAW/UDP;client_port=%d-%d",
1012                                       i_port, i_port + 1 );
1013                     }
1014                 }
1015                 else
1016                     httpd_MsgAdd( answer, "Transport", "RTP/AVP/UDP;client_port=%d-%d",
1017                                   i_port, i_port + 1 );
1018             }
1019             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1020             {
1021                 answer->i_status = 461;
1022                 answer->psz_status = strdup( "Unsupported Transport" );
1023                 answer->i_body = 0;
1024                 answer->p_body = NULL;
1025             }
1026
1027             /* Intentional fall-through on x-playNow option in RTSP request */
1028             if( !psz_playnow )
1029                 break;
1030         }
1031
1032         case HTTPD_MSG_PLAY:
1033         {
1034             char *psz_output, ip[NI_MAXNUMERICHOST];
1035             int i, i_port_audio = 0, i_port_video = 0;
1036
1037             /* for now only multicast so easy */
1038             if( !psz_playnow )
1039             {
1040                 answer->i_status = 200;
1041                 answer->psz_status = strdup( "OK" );
1042                 answer->i_body = 0;
1043                 answer->p_body = NULL;
1044             }
1045
1046             if( !psz_session )
1047                 psz_session = httpd_MsgGet( query, "Session" );
1048             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1049
1050             p_rtsp = RtspClientGet( p_media, psz_session );
1051             if( !p_rtsp )
1052             {
1053                 answer->i_status = 500;
1054                 answer->psz_status = strdup( "Internal server error" );
1055                 answer->i_body = 0;
1056                 answer->p_body = NULL;
1057                 break;
1058             }
1059
1060             if( p_rtsp->b_playing )
1061             {
1062                 const char *psz_position = httpd_MsgGet( query, "Range" );
1063                 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1064                 if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1065                 if( psz_position && !psz_scale )
1066                 {
1067                     double f_pos;
1068                     char *end;
1069
1070                     msg_Dbg( p_vod, "seeking request: %s", psz_position );
1071                     psz_position += 4;
1072                     /* FIXME: npt= is not necessarily formatted as a float */
1073                     f_pos = us_strtod( psz_position, &end );
1074                     if( end > psz_position )
1075                     {
1076                         f_pos /= ((double)(p_media->i_length))/1000 /1000 / 100;
1077                         CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media, psz_session, f_pos, NULL );
1078                     }
1079                     break;
1080                 }
1081                 if( psz_scale )
1082                 {
1083                     double f_scale = 0.0;
1084                     char *end;
1085
1086                     f_scale = us_strtod( psz_scale, &end );
1087                     if( end > psz_scale )
1088                     {
1089                         f_scale = (f_scale * 30.0);
1090                         if( psz_scale[0] == '-' ) /* rewind */
1091                         {
1092                             msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1093                             CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media, psz_session, f_scale, NULL );
1094                         }
1095                         else if(psz_scale[0] != '1' ) /* fast-forward */
1096                         {
1097                             msg_Dbg( p_vod, "fastforward request: %s", psz_scale );
1098                             CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media, psz_session, f_scale, NULL );
1099                         }
1100
1101                         if( p_rtsp->b_paused == VLC_TRUE )
1102                         {
1103                             p_rtsp->b_paused = VLC_FALSE;
1104                             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session, 0, NULL );
1105                         }
1106                     }
1107                     break;
1108                 }
1109             }
1110
1111             if( p_rtsp->b_playing && p_rtsp->b_paused )
1112             {
1113                 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session, 0, NULL );
1114                 p_rtsp->b_paused = VLC_FALSE;
1115                 break;
1116             }
1117             else if( p_rtsp->b_playing ) break;
1118
1119             if( httpd_ClientIP( cl, ip ) == NULL ) break;
1120
1121             p_rtsp->b_playing = VLC_TRUE;
1122
1123             /* FIXME for != 1 video and 1 audio */
1124             for( i = 0; i < p_rtsp->i_es; i++ )
1125             {
1126                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1127                     i_port_audio = p_rtsp->es[i]->i_port;
1128                 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1129                     i_port_video = p_rtsp->es[i]->i_port;
1130             }
1131
1132             if( p_media->psz_mux )
1133             {
1134                 if( p_media->b_raw )
1135                 {
1136                     asprintf( &psz_output, "std{access=udp,dst=%s:%i,mux=%s}",
1137                               ip, i_port, p_media->psz_mux );
1138                 }
1139                 else
1140                 {
1141                     asprintf( &psz_output, "rtp{dst=%s,port=%i,mux=%s}",
1142                               ip, i_port_video, p_media->psz_mux );
1143                 }
1144             }
1145             else
1146             {
1147                 asprintf( &psz_output, "rtp{dst=%s,port-video=%i,"
1148                           "port-audio=%i}", ip, i_port_video, i_port_audio );
1149             }
1150
1151             CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session, 0, psz_output );
1152             free( psz_output );
1153             break;
1154         }
1155
1156         case HTTPD_MSG_DESCRIBE:
1157         {
1158             char *psz_sdp =
1159                 SDPGenerate( p_media, cl );
1160
1161             if( psz_sdp != NULL )
1162             {
1163                 answer->i_status = 200;
1164                 answer->psz_status = strdup( "OK" );
1165                 httpd_MsgAdd( answer, "Content-type",  "%s", "application/sdp" );
1166
1167                 answer->p_body = (uint8_t *)psz_sdp;
1168                 answer->i_body = strlen( psz_sdp );
1169             }
1170             else
1171             {
1172                 answer->i_status = 500;
1173                 answer->psz_status = strdup( "Internal server error" );
1174                 answer->p_body = NULL;
1175                 answer->i_body = 0;
1176             }
1177             break;
1178         }
1179
1180         case HTTPD_MSG_PAUSE:
1181             psz_session = httpd_MsgGet( query, "Session" );
1182             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1183
1184             p_rtsp = RtspClientGet( p_media, psz_session );
1185             if( !p_rtsp ) break;
1186
1187             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session, 0, NULL );
1188             p_rtsp->b_paused = VLC_TRUE;
1189
1190             answer->i_status = 200;
1191             answer->psz_status = strdup( "OK" );
1192             answer->i_body = 0;
1193             answer->p_body = NULL;
1194             break;
1195
1196         case HTTPD_MSG_TEARDOWN:
1197             /* for now only multicast so easy again */
1198             answer->i_status = 200;
1199             answer->psz_status = strdup( "OK" );
1200             answer->i_body = 0;
1201             answer->p_body = NULL;
1202
1203             psz_session = httpd_MsgGet( query, "Session" );
1204             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1205
1206             p_rtsp = RtspClientGet( p_media, psz_session );
1207             if( !p_rtsp ) break;
1208
1209             CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session, 0, NULL );
1210             RtspClientDel( p_media, p_rtsp );
1211             break;
1212
1213         case HTTPD_MSG_GETPARAMETER:
1214             answer->i_status = 200;
1215             answer->psz_status = strdup( "OK" );
1216             answer->i_body = 0;
1217             answer->p_body = NULL;
1218             break;
1219
1220         default:
1221             return VLC_EGENERIC;
1222     }
1223
1224     httpd_MsgAdd( answer, "Server", "VLC Server" );
1225     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1226     psz_cseq = httpd_MsgGet( query, "Cseq" );
1227     psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1228     httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1229     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1230
1231     if( psz_session )
1232     {
1233          if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
1234              httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1235                p_media->p_vod->p_sys->i_session_timeout );
1236          else
1237               httpd_MsgAdd( answer, "Session", "%s", psz_session );
1238     }
1239
1240     return VLC_SUCCESS;
1241 }
1242
1243 static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1244                            httpd_message_t *answer, httpd_message_t *query )
1245 {
1246     media_es_t *p_es = (media_es_t*)p_args;
1247     vod_media_t *p_media = p_es->p_media;
1248     vod_t *p_vod = p_media->p_vod;
1249     rtsp_client_t *p_rtsp = NULL;
1250     const char *psz_transport = NULL;
1251     const char *psz_playnow = NULL; /* support option: x-playNow */
1252     const char *psz_session = NULL;
1253     const char *psz_position = NULL;
1254     const char *psz_cseq = NULL;
1255     int i_cseq = 0;
1256     int i;
1257
1258     if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1259
1260     msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1261
1262     answer->i_proto   = HTTPD_PROTO_RTSP;
1263     answer->i_version = query->i_version;
1264     answer->i_type    = HTTPD_MSG_ANSWER;
1265     answer->i_body    = 0;
1266     answer->p_body      = NULL;
1267
1268     switch( query->i_type )
1269     {
1270         case HTTPD_MSG_SETUP:
1271             psz_playnow = httpd_MsgGet( query, "x-playNow" );
1272             psz_transport = httpd_MsgGet( query, "Transport" );
1273
1274             msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1275
1276             if( strstr( psz_transport, "unicast" ) &&
1277                 strstr( psz_transport, "client_port=" ) )
1278             {
1279                 rtsp_client_t *p_rtsp = NULL;
1280                 rtsp_client_es_t *p_rtsp_es = NULL;
1281                 char ip[NI_MAXNUMERICHOST];
1282                 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
1283                                 strlen("client_port=") );
1284
1285                 if( httpd_ClientIP( cl, ip ) == NULL )
1286                 {
1287                     answer->i_status = 500;
1288                     answer->psz_status = strdup( "Internal server error" );
1289                     answer->i_body = 0;
1290                     answer->p_body = NULL;
1291                     break;
1292                 }
1293
1294                 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1295                         ip, i_port );
1296
1297                 psz_session = httpd_MsgGet( query, "Session" );
1298                 if( !psz_session || !*psz_session )
1299                 {
1300                     char *psz_new;
1301                     if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1302                         ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1303                     {
1304                         answer->i_status = 503;
1305                         answer->psz_status = strdup( "Too many connections" );
1306                         answer->i_body = 0;
1307                         answer->p_body = NULL;
1308                         break;
1309                     }
1310                     asprintf( &psz_new, "%d", rand() );
1311                     psz_session = psz_new;
1312
1313                     p_rtsp = RtspClientNew( p_media, psz_new );
1314                 }
1315                 else
1316                 {
1317                     p_rtsp = RtspClientGet( p_media, psz_session );
1318                     if( !p_rtsp )
1319                     {
1320                         answer->i_status = 454;
1321                         answer->psz_status = strdup( "Unknown session id" );
1322                         answer->i_body = 0;
1323                         answer->p_body = NULL;
1324                         break;
1325                     }
1326                 }
1327
1328                 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1329                 if( !p_rtsp_es )
1330                 {
1331                     answer->i_status = 500;
1332                     answer->psz_status = strdup( "Internal server error" );
1333                     answer->i_body = 0;
1334                     answer->p_body = NULL;
1335                     break;
1336                 }
1337                 p_rtsp_es->i_port = i_port;
1338                 p_rtsp_es->psz_ip = strdup( ip );
1339                 p_rtsp_es->p_media_es = p_es;
1340                 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1341
1342                 answer->i_status = 200;
1343                 answer->psz_status = strdup( "OK" );
1344                 answer->i_body = 0;
1345                 answer->p_body = NULL;
1346
1347                 if( p_media->b_raw )
1348                 {
1349                     if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1350                     {
1351                         httpd_MsgAdd( answer, "Transport", "MP2T/H2221/UDP;client_port=%d-%d",
1352                                       p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1353                     }
1354                     else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1355                     {
1356                         httpd_MsgAdd( answer, "Transport", "RAW/RAW/UDP;client_port=%d-%d",
1357                                       p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1358                     }
1359                 }
1360                 else
1361                 {
1362                     httpd_MsgAdd( answer, "Transport", "RTP/AVP/UDP;client_port=%d-%d",
1363                                   p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1364                 }
1365             }
1366             else /* TODO  strstr( psz_transport, "interleaved" ) ) */
1367             {
1368                 answer->i_status = 461;
1369                 answer->psz_status = strdup( "Unsupported Transport" );
1370                 answer->i_body = 0;
1371                 answer->p_body = NULL;
1372             }
1373
1374             /* Intentional fall-through on x-playNow option in RTSP request */
1375             if( !psz_playnow )
1376                 break;
1377
1378         case HTTPD_MSG_PLAY:
1379             /* This is kind of a kludge. Should we only support Aggregate
1380              * Operations ? */
1381             psz_session = httpd_MsgGet( query, "Session" );
1382             msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1383
1384             p_rtsp = RtspClientGet( p_media, psz_session );
1385
1386             psz_position = httpd_MsgGet( query, "Range" );
1387             if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1388             if( psz_position )
1389             {
1390                 double f_pos;
1391                 char *end;
1392
1393                 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1394
1395                 psz_position += 4;
1396                 /* FIXME: npt= is not necessarily formatted as a float */
1397                 f_pos = us_strtod( psz_position, &end );
1398                 if( end > psz_position )
1399                 {
1400                     f_pos /= ((double)(p_media->i_length))/1000 /1000 / 100;
1401                     CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media, psz_session, f_pos, NULL );
1402                 }
1403             }
1404
1405             if( !psz_playnow )
1406             {
1407                 answer->i_status = 200;
1408                 answer->psz_status = strdup( "OK" );
1409                 answer->i_body = 0;
1410                 answer->p_body = NULL;
1411             }
1412             break;
1413
1414         case HTTPD_MSG_TEARDOWN:
1415             answer->i_status = 200;
1416             answer->psz_status = strdup( "OK" );
1417             answer->i_body = 0;
1418             answer->p_body = NULL;
1419
1420             psz_session = httpd_MsgGet( query, "Session" );
1421             msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1422
1423             p_rtsp = RtspClientGet( p_media, psz_session );
1424             if( !p_rtsp ) break;
1425
1426             for( i = 0; i < p_rtsp->i_es; i++ )
1427             {
1428                 if( p_rtsp->es[i]->p_media_es == p_es )
1429                 {
1430                     if( p_rtsp->es[i]->psz_ip ) free( p_rtsp->es[i]->psz_ip );
1431                     TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, p_rtsp->es[i] );
1432                     break;
1433                 }
1434             }
1435
1436             if( !p_rtsp->i_es )
1437             {
1438                 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session, 0, NULL );
1439                 RtspClientDel( p_media, p_rtsp );
1440             }
1441             break;
1442
1443         case HTTPD_MSG_PAUSE:
1444             /* This is kind of a kludge. Should we only support Aggregate
1445              * Operations ? */
1446             psz_session = httpd_MsgGet( query, "Session" );
1447             msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1448
1449             p_rtsp = RtspClientGet( p_media, psz_session );
1450             if( !p_rtsp ) break;
1451
1452             CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session, 0, NULL );
1453             p_rtsp->b_paused = VLC_TRUE;
1454
1455             answer->i_status = 200;
1456             answer->psz_status = strdup( "OK" );
1457             answer->i_body = 0;
1458             answer->p_body = NULL;
1459             break;
1460
1461         default:
1462             return VLC_EGENERIC;
1463             break;
1464     }
1465
1466     httpd_MsgAdd( answer, "Server", "VLC Server" );
1467     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1468     psz_cseq = httpd_MsgGet( query, "Cseq" );
1469     if (psz_cseq)
1470         i_cseq = atoi( psz_cseq );
1471     else
1472         i_cseq = 0;
1473     httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1474     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1475
1476     if( psz_session )
1477         httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1478
1479     return VLC_SUCCESS;
1480 }
1481
1482 /*****************************************************************************
1483  * SDPGenerate: TODO
1484  * FIXME: need to be moved to a common place ?
1485  *****************************************************************************/
1486 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1487 {
1488     int i, i_size;
1489     char *p, *psz_sdp, ip[NI_MAXNUMERICHOST], ipv;
1490     const char *psz_control;
1491
1492     if( httpd_ServerIP( cl, ip ) == NULL )
1493         return NULL;
1494
1495     p = strchr( ip, '%' );
1496     if( p != NULL )
1497         *p = '\0'; /* remove scope if present */
1498
1499     ipv = ( strchr( ip, ':' ) != NULL ) ? '6' : '4';
1500
1501     /* Calculate size */
1502     i_size = sizeof( "v=0\r\n" ) +
1503         sizeof( "o=- * * IN IP4 \r\n" ) + 10 + NI_MAXNUMERICHOST +
1504         sizeof( "s=*\r\n" ) + strlen( p_media->psz_session_name ) +
1505         sizeof( "i=*\r\n" ) + strlen( p_media->psz_session_description ) +
1506         sizeof( "u=*\r\n" ) + strlen( p_media->psz_session_url ) +
1507         sizeof( "e=*\r\n" ) + strlen( p_media->psz_session_email ) +
1508         sizeof( "c=IN IP4 0.0.0.0\r\n" ) + 20 + 10 +
1509         sizeof( "t=0 0\r\n" ) + /* FIXME */
1510         sizeof( "a=tool:"PACKAGE_STRING"\r\n" ) +
1511         sizeof( "a=range:npt=0-1000000000.000\r\n" );
1512
1513     psz_control = (ipv == '6') ? p_media->psz_rtsp_control_v6
1514                                : p_media->psz_rtsp_control_v4;
1515     for( i = 0; i < p_media->i_es; i++ )
1516     {
1517         media_es_t *p_es = p_media->es[i];
1518
1519         i_size += sizeof( "m=**d*o * RTP/AVP *\r\n" ) + 19;
1520         if( p_es->psz_rtpmap )
1521         {
1522             i_size += sizeof( "a=rtpmap:* *\r\n" ) +
1523                 strlen( p_es->psz_rtpmap ) + 9;
1524         }
1525         if( p_es->psz_fmtp )
1526         {
1527             i_size += sizeof( "a=fmtp:* *\r\n" ) +
1528                 strlen( p_es->psz_fmtp ) + 9;
1529         }
1530     }
1531     i_size += (strlen( psz_control ) + strlen( ip ) + 9) * p_media->i_es;
1532
1533     p = psz_sdp = malloc( i_size );
1534     p += sprintf( p, "v=0\r\n" );
1535     p += sprintf( p, "o=- "I64Fd" %d IN IP%c %s\r\n",
1536                   p_media->i_sdp_id, p_media->i_sdp_version, ipv, ip );
1537     if( *p_media->psz_session_name )
1538         p += sprintf( p, "s=%s\r\n", p_media->psz_session_name );
1539     if( *p_media->psz_session_description )
1540         p += sprintf( p, "i=%s\r\n", p_media->psz_session_description );
1541     if( *p_media->psz_session_url )
1542         p += sprintf( p, "u=%s\r\n", p_media->psz_session_url );
1543     if( *p_media->psz_session_email )
1544         p += sprintf( p, "e=%s\r\n", p_media->psz_session_email );
1545
1546     p += sprintf( p, "c=IN IP%c %s\r\n", ipv, ipv == '6' ? "::" : "0.0.0.0" );
1547     p += sprintf( p, "t=0 0\r\n" ); /* FIXME */
1548     p += sprintf( p, "a=tool:"PACKAGE_STRING"\r\n" );
1549
1550     if( p_media->i_length > 0 )
1551     {
1552         lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
1553         p += sprintf( p, "a=range:npt=0-%lld.%03u\r\n", d.quot,
1554                       (unsigned)d.rem );
1555     }
1556
1557     for( i = 0; i < p_media->i_es; i++ )
1558     {
1559         media_es_t *p_es = p_media->es[i];
1560
1561         if( p_es->fmt.i_cat == AUDIO_ES )
1562         {
1563             p += sprintf( p, "m=audio %d RTP/AVP %d\r\n",
1564                           p_es->i_port, p_es->i_payload_type );
1565         }
1566         else if( p_es->fmt.i_cat == VIDEO_ES )
1567         {
1568             p += sprintf( p, "m=video %d RTP/AVP %d\r\n",
1569                           p_es->i_port, p_es->i_payload_type );
1570         }
1571         else
1572         {
1573             continue;
1574         }
1575
1576         if( p_es->psz_rtpmap )
1577         {
1578             p += sprintf( p, "a=rtpmap:%d %s\r\n", p_es->i_payload_type,
1579                           p_es->psz_rtpmap );
1580         }
1581         if( p_es->psz_fmtp )
1582         {
1583             p += sprintf( p, "a=fmtp:%d %s\r\n", p_es->i_payload_type,
1584                           p_es->psz_fmtp );
1585         }
1586
1587         p += sprintf( p, psz_control, ip, i );
1588     }
1589
1590     return psz_sdp;
1591 }