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misc: medialibrary: ctx does not need dynamic lifetime
[vlc.git] / modules / misc / rtsp.c
blob06b280fc60e3fecccb2d7753302d0e0ee96a03f7
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 #define VLC_MODULE_LICENSE VLC_LICENSE_GPL_2_PLUS
34 #include <vlc_common.h>
35 #include <vlc_plugin.h>
36 #include <vlc_input.h>
37 #include <vlc_sout.h>
38 #include <vlc_block.h>
39
40 #include <vlc_httpd.h>
41 #include <vlc_vod.h>
42 #include <vlc_url.h>
43 #include <vlc_network.h>
44 #include <vlc_charset.h>
45 #include <vlc_strings.h>
46 #include <vlc_rand.h>
47 #include <vlc_memstream.h>
48
49 #ifndef _WIN32
50 # include <locale.h>
51 #endif
52
53 #ifdef HAVE_XLOCALE_H
54 # include <xlocale.h>
55 #endif
56
57 /*****************************************************************************
58 * Module descriptor
59 *****************************************************************************/
60 static int Open ( vlc_object_t * );
61 static void Close( vlc_object_t * );
62
63 #define THROTTLE_TEXT N_( "Maximum number of connections" )
64 #define THROTTLE_LONGTEXT N_( "This limits the maximum number of clients " \
65 "that can connect to the RTSP VOD. 0 means no limit." )
66
67 #define RAWMUX_TEXT N_( "MUX for RAW RTSP transport" )
68
69 #define SESSION_TIMEOUT_TEXT N_( "Sets the timeout option in the RTSP " \
70 "session string" )
71 #define SESSION_TIMEOUT_LONGTEXT N_( "Defines what timeout option to add " \
72 "to the RTSP session ID string. Setting it to a negative number removes " \
73 "the timeout option entirely. This is needed by some IPTV STBs (such as " \
74 "those made by HansunTech) which get confused by it. The default is 5." )
75
76 vlc_module_begin ()
77 set_shortname( N_("RTSP VoD" ) )
78 set_description( N_("Legacy RTSP VoD server") )
79 set_category( CAT_SOUT )
80 set_subcategory( SUBCAT_SOUT_VOD )
81 set_capability( "vod server", 1 )
82 set_callbacks( Open, Close )
83 add_shortcut( "rtsp" )
84 add_string( "rtsp-raw-mux", "ts", RAWMUX_TEXT,
85 RAWMUX_TEXT, true )
86 add_integer( "rtsp-throttle-users", 0, THROTTLE_TEXT,
87 THROTTLE_LONGTEXT, true )
88 add_integer( "rtsp-session-timeout", 5, SESSION_TIMEOUT_TEXT,
89 SESSION_TIMEOUT_LONGTEXT, true )
90 vlc_module_end ()
91
92 /*****************************************************************************
93 * Exported prototypes
94 *****************************************************************************/
95
96 typedef struct media_es_t media_es_t;
97
98 typedef struct
99 {
100 media_es_t *p_media_es;
101 int i_port;
102
103 } rtsp_client_es_t;
104
105 typedef struct
106 {
107 char *psz_session;
108
109 bool b_playing; /* is it in "play" state */
110 int i_port_raw;
111
112 int i_es;
113 rtsp_client_es_t **es;
114
115 } rtsp_client_t;
116
117 struct media_es_t
118 {
119 /* VoD server */
120 vod_t *p_vod;
121
122 /* RTSP server */
123 httpd_url_t *p_rtsp_url;
124
125 vod_media_t *p_media;
126
127 es_format_t fmt;
128 uint8_t i_payload_type;
129 const char *psz_ptname;
130 unsigned i_clock_rate;
131 unsigned i_channels;
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 vlc_mutex_t lock;
150
151 /* ES list */
152 int i_es;
153 media_es_t **es;
154 const char *psz_mux;
155 bool b_raw;
156
157 /* RTSP client */
158 int i_rtsp;
159 rtsp_client_t **rtsp;
160
161 /* Infos */
162 vlc_tick_t i_length;
163 };
164
165 typedef struct
166 {
167 /* RTSP server */
168 httpd_host_t *p_rtsp_host;
169 char *psz_path;
170 int i_throttle_users;
171 int i_connections;
172
173 char *psz_raw_mux;
174
175 int i_session_timeout;
176
177 /* List of media */
178 int i_media_id;
179 int i_media;
180 vod_media_t **media;
181
182 /* */
183 vlc_thread_t thread;
184 block_fifo_t *p_fifo_cmd;
185 } vod_sys_t;
186
187 /* rtsp delayed command (to avoid deadlock between vlm/httpd) */
188 typedef enum
189 {
190 RTSP_CMD_TYPE_NONE, /* Exit requested */
191
192 RTSP_CMD_TYPE_PLAY,
193 RTSP_CMD_TYPE_PAUSE,
194 RTSP_CMD_TYPE_STOP,
195 RTSP_CMD_TYPE_SEEK,
196 RTSP_CMD_TYPE_REWIND,
197 RTSP_CMD_TYPE_FORWARD,
198
199 RTSP_CMD_TYPE_ADD,
200 RTSP_CMD_TYPE_DEL,
201 } rtsp_cmd_type_t;
202
203 /* */
204 typedef struct
205 {
206 int i_type;
207 int i_media_id;
208 vod_media_t *p_media;
209 char *psz_session;
210 char *psz_arg;
211 int64_t i_arg;
212 double f_arg;
213 } rtsp_cmd_t;
214
215 static vod_media_t *MediaNew( vod_t *, const char *, input_item_t * );
216 static void MediaDel( vod_t *, vod_media_t * );
217 static void MediaAskDel ( 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( void * );
222 static void CommandPush( vod_t *, rtsp_cmd_type_t, vod_media_t *,
223 const char *psz_session, int64_t i_arg,
224 double f_arg, const char *psz_arg );
225
226 static rtsp_client_t *RtspClientNew( vod_media_t *, char * );
227 static rtsp_client_t *RtspClientGet( vod_media_t *, const char * );
228 static void RtspClientDel( vod_media_t *, rtsp_client_t * );
229
230 static int RtspCallback( httpd_callback_sys_t *, httpd_client_t *,
231 httpd_message_t *, const httpd_message_t * );
232 static int RtspCallbackES( httpd_callback_sys_t *, httpd_client_t *,
233 httpd_message_t *, const httpd_message_t * );
234
235 static char *SDPGenerate( const vod_media_t *, httpd_client_t *cl );
236
237 static void sprintf_hexa( char *s, uint8_t *p_data, int i_data )
238 {
239 static const char hex[16] = "0123456789abcdef";
240
241 for( int 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 = NULL;
256 char *psz_url = NULL;
257 vlc_url_t url;
258
259 psz_url = var_InheritString( p_vod, "rtsp-host" );
260 vlc_UrlParse( &url, psz_url );
261 free( psz_url );
262
263 p_vod->p_sys = p_sys = malloc( sizeof( vod_sys_t ) );
264 if( !p_sys ) goto error;
265 p_sys->p_rtsp_host = 0;
266
267 p_sys->i_session_timeout = var_CreateGetInteger( p_this, "rtsp-session-timeout" );
268
269 p_sys->i_throttle_users = var_CreateGetInteger( p_this, "rtsp-throttle-users" );
270 msg_Dbg( p_this, "allowing up to %d connections", p_sys->i_throttle_users );
271 p_sys->i_connections = 0;
272
273 p_sys->psz_raw_mux = var_CreateGetString( p_this, "rtsp-raw-mux" );
274
275 p_sys->p_rtsp_host = vlc_rtsp_HostNew( VLC_OBJECT(p_vod) );
276 if( !p_sys->p_rtsp_host )
277 {
278 msg_Err( p_vod, "cannot create RTSP server" );
279 goto error;
280 }
281
282 p_sys->psz_path = strdup( url.psz_path ? url.psz_path : "/" );
283
284 TAB_INIT( p_sys->i_media, p_sys->media );
285 p_sys->i_media_id = 0;
286
287 p_vod->pf_media_new = MediaNew;
288 p_vod->pf_media_del = MediaAskDel;
289
290 p_sys->p_fifo_cmd = block_FifoNew();
291 if( vlc_clone( &p_sys->thread, CommandThread, p_vod, VLC_THREAD_PRIORITY_LOW ) )
292 {
293 msg_Err( p_vod, "cannot spawn rtsp vod thread" );
294 block_FifoRelease( p_sys->p_fifo_cmd );
295 free( p_sys->psz_path );
296 goto error;
297 }
298
299 vlc_UrlClean( &url );
300 return VLC_SUCCESS;
301
302 error:
303 if( p_sys )
304 {
305 if( p_sys->p_rtsp_host ) httpd_HostDelete( p_sys->p_rtsp_host );
306 free( p_sys->psz_raw_mux );
307 free( p_sys );
308 }
309 vlc_UrlClean( &url );
310
311 return VLC_EGENERIC;
312 }
313
314 /*****************************************************************************
315 * Close:
316 *****************************************************************************/
317 static void Close( vlc_object_t * p_this )
318 {
319 vod_t *p_vod = (vod_t *)p_this;
320 vod_sys_t *p_sys = p_vod->p_sys;
321
322 /* Stop command thread */
323 CommandPush( p_vod, RTSP_CMD_TYPE_NONE, NULL, NULL, 0, 0.0, NULL );
324 vlc_join( p_sys->thread, NULL );
325
326 while( block_FifoCount( p_sys->p_fifo_cmd ) > 0 )
327 {
328 rtsp_cmd_t cmd;
329 block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
330 memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
331 block_Release( p_block_cmd );
332 if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
333 MediaDel(p_vod, cmd.p_media);
334 free( cmd.psz_session );
335 free( cmd.psz_arg );
336 }
337 block_FifoRelease( p_sys->p_fifo_cmd );
338
339 httpd_HostDelete( p_sys->p_rtsp_host );
340 var_Destroy( p_this, "rtsp-session-timeout" );
341 var_Destroy( p_this, "rtsp-throttle-users" );
342 var_Destroy( p_this, "rtsp-raw-mux" );
343
344 /* Check VLM is not buggy */
345 if( p_sys->i_media > 0 )
346 msg_Err( p_vod, "rtsp vod leaking %d medias", p_sys->i_media );
347 TAB_CLEAN( p_sys->i_media, p_sys->media );
348
349 free( p_sys->psz_path );
350 free( p_sys->psz_raw_mux );
351 free( p_sys );
352 }
353
354 /*****************************************************************************
355 * Media handling
356 *****************************************************************************/
357 static vod_media_t *MediaNew( vod_t *p_vod, const char *psz_name,
358 input_item_t *p_item )
359 {
360 vod_sys_t *p_sys = p_vod->p_sys;
361
362 vod_media_t *p_media = calloc( 1, sizeof(vod_media_t) );
363 if( !p_media )
364 return NULL;
365
366 p_media->id = p_sys->i_media_id++;
367 TAB_INIT( p_media->i_es, p_media->es );
368 p_media->psz_mux = NULL;
369 TAB_INIT( p_media->i_rtsp, p_media->rtsp );
370 p_media->b_raw = false;
371
372 if( asprintf( &p_media->psz_rtsp_path, "%s%s",
373 p_sys->psz_path, psz_name ) <0 )
374 goto error;
375
376 p_media->p_rtsp_url =
377 httpd_UrlNew( p_sys->p_rtsp_host, p_media->psz_rtsp_path, NULL, NULL );
378
379 if( !p_media->p_rtsp_url )
380 {
381 msg_Err( p_vod, "cannot create RTSP url (%s)", p_media->psz_rtsp_path);
382 goto error;
383 }
384
385 msg_Dbg( p_vod, "created RTSP url: %s", p_media->psz_rtsp_path );
386
387 if( asprintf( &p_media->psz_rtsp_control_v4,
388 "rtsp://%%s:%%d%s/trackID=%%d",
389 p_media->psz_rtsp_path ) < 0 )
390 goto error;
391
392 if( asprintf( &p_media->psz_rtsp_control_v6,
393 "rtsp://[%%s]:%%d%s/trackID=%%d",
394 p_media->psz_rtsp_path ) < 0 )
395 goto error;
396
397 httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_SETUP,
398 RtspCallback, (void*)p_media );
399 httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_DESCRIBE,
400 RtspCallback, (void*)p_media );
401 httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PLAY,
402 RtspCallback, (void*)p_media );
403 httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_PAUSE,
404 RtspCallback, (void*)p_media );
405 httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_GETPARAMETER,
406 RtspCallback, (void*)p_media );
407 httpd_UrlCatch( p_media->p_rtsp_url, HTTPD_MSG_TEARDOWN,
408 RtspCallback, (void*)p_media );
409
410 p_media->p_vod = p_vod;
411
412 vlc_mutex_init( &p_media->lock );
413
414 p_media->i_length = input_item_GetDuration( p_item );
415
416 vlc_mutex_lock( &p_item->lock );
417 msg_Dbg( p_vod, "media has %i declared ES", p_item->i_es );
418 for( int i = 0; i < p_item->i_es; i++ )
419 {
420 MediaAddES( p_vod, p_media, p_item->es[i] );
421 }
422 vlc_mutex_unlock( &p_item->lock );
423
424 CommandPush( p_vod, RTSP_CMD_TYPE_ADD, p_media, NULL, 0, 0.0, NULL );
425 return p_media;
426
427 error:
428 if( p_media )
429 {
430 free( p_media->psz_rtsp_control_v4 );
431 if( p_media->p_rtsp_url )
432 httpd_UrlDelete( p_media->p_rtsp_url );
433 free( p_media->psz_rtsp_path );
434 free( p_media );
435 }
436 return NULL;
437 }
438
439 static void MediaAskDel ( vod_t *p_vod, vod_media_t *p_media )
440 {
441 CommandPush( p_vod, RTSP_CMD_TYPE_DEL, p_media, NULL, 0, 0.0, NULL );
442 }
443
444 static void MediaDel( vod_t *p_vod, vod_media_t *p_media )
445 {
446 vod_sys_t *p_sys = p_vod->p_sys;
447
448 msg_Dbg( p_vod, "deleting media: %s", p_media->psz_rtsp_path );
449
450 TAB_REMOVE( p_sys->i_media, p_sys->media, p_media );
451
452 httpd_UrlDelete( p_media->p_rtsp_url );
453
454 while( p_media->i_rtsp > 0 )
455 RtspClientDel( p_media, p_media->rtsp[0] );
456 TAB_CLEAN( p_media->i_rtsp, p_media->rtsp );
457
458 free( p_media->psz_rtsp_path );
459 free( p_media->psz_rtsp_control_v6 );
460 free( p_media->psz_rtsp_control_v4 );
461
462 while( p_media->i_es )
463 MediaDelES( p_vod, p_media, &p_media->es[0]->fmt );
464 TAB_CLEAN( p_media->i_es, p_media->es );
465
466 vlc_mutex_destroy( &p_media->lock );
467
468 free( p_media );
469 }
470
471 static int MediaAddES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt )
472 {
473 char *psz_urlc;
474
475 media_es_t *p_es = calloc( 1, sizeof(media_es_t) );
476 if( !p_es )
477 return VLC_ENOMEM;
478
479 p_media->psz_mux = NULL;
480
481 /* TODO: update SDP, etc... */
482 if( asprintf( &psz_urlc, "%s/trackID=%d",
483 p_media->psz_rtsp_path, p_media->i_es ) < 0 )
484 {
485 free( p_es );
486 return VLC_ENOMEM;
487 }
488 msg_Dbg( p_vod, " - ES %4.4s (%s)", (char *)&p_fmt->i_codec, psz_urlc );
489
490 /* Dynamic payload. No conflict since we put each ES in its own
491 * RTP session */
492 p_es->i_payload_type = 96;
493 p_es->i_clock_rate = 90000;
494 p_es->i_channels = 1;
495
496 switch( p_fmt->i_codec )
497 {
498 case VLC_CODEC_S16B:
499 if( p_fmt->audio.i_channels == 1 && p_fmt->audio.i_rate == 44100 )
500 {
501 p_es->i_payload_type = 11;
502 }
503 else if( p_fmt->audio.i_channels == 2 &&
504 p_fmt->audio.i_rate == 44100 )
505 {
506 p_es->i_payload_type = 10;
507 }
508 p_es->psz_ptname = "L16";
509 p_es->i_clock_rate = p_fmt->audio.i_rate;
510 p_es->i_channels = p_fmt->audio.i_channels;
511 break;
512 case VLC_CODEC_U8:
513 p_es->psz_ptname = "L8";
514 p_es->i_clock_rate = p_fmt->audio.i_rate;
515 p_es->i_channels = p_fmt->audio.i_channels;
516 break;
517 case VLC_CODEC_MPGA:
518 p_es->i_payload_type = 14;
519 p_es->psz_ptname = "MPA";
520 break;
521 case VLC_CODEC_MPGV:
522 p_es->i_payload_type = 32;
523 p_es->psz_ptname = "MPV";
524 break;
525 case VLC_CODEC_A52:
526 p_es->psz_ptname = "ac3";
527 p_es->i_clock_rate = p_fmt->audio.i_rate;
528 break;
529 case VLC_CODEC_H263:
530 p_es->psz_ptname = "H263-1998";
531 break;
532 case VLC_CODEC_H264:
533 p_es->psz_ptname = "H264";
534 p_es->psz_fmtp = NULL;
535 /* FIXME AAAAAAAAAAAARRRRRRRRGGGG copied from stream_out/rtp.c */
536 if( p_fmt->i_extra > 0 )
537 {
538 uint8_t *p_buffer = p_fmt->p_extra;
539 int i_buffer = p_fmt->i_extra;
540 char *p_64_sps = NULL;
541 char *p_64_pps = NULL;
542 char hexa[6+1];
543
544 while( i_buffer > 4 )
545 {
546 int i_offset = 0;
547 int i_size = 0;
548
549 while( p_buffer[0] != 0 || p_buffer[1] != 0 ||
550 p_buffer[2] != 1 )
551 {
552 p_buffer++;
553 i_buffer--;
554 if( i_buffer == 0 ) break;
555 }
556
557 if( i_buffer < 4 || memcmp(p_buffer, "\x00\x00\x01", 3 ) )
558 {
559 /* No startcode found.. */
560 break;
561 }
562 p_buffer += 3;
563 i_buffer -= 3;
564
565 const int i_nal_type = p_buffer[0]&0x1f;
566
567 i_size = i_buffer;
568 for( i_offset = 0; i_offset+2 < i_buffer ; i_offset++)
569 {
570 if( !memcmp(p_buffer + i_offset, "\x00\x00\x01", 3 ) )
571 {
572 /* we found another startcode */
573 while( i_offset > 0 && 0 == p_buffer[ i_offset - 1 ] )
574 i_offset--;
575 i_size = i_offset;
576 break;
577 }
578 }
579
580 if( i_size == 0 )
581 {
582 /* No-info found in nal */
583 continue;
584 }
585
586 if( i_nal_type == 7 )
587 {
588 free( p_64_sps );
589 p_64_sps = vlc_b64_encode_binary( p_buffer, i_size );
590 /* XXX: nothing ensures that i_size >= 4 ?? */
591 sprintf_hexa( hexa, &p_buffer[1], 3 );
592 }
593 else if( i_nal_type == 8 )
594 {
595 free( p_64_pps );
596 p_64_pps = vlc_b64_encode_binary( p_buffer, i_size );
597 }
598 i_buffer -= i_size;
599 p_buffer += i_size;
600 }
601 /* */
602 if( p_64_sps && p_64_pps )
603 {
604 if( asprintf( &p_es->psz_fmtp,
605 "packetization-mode=1;profile-level-id=%s;"
606 "sprop-parameter-sets=%s,%s;", hexa, p_64_sps,
607 p_64_pps ) < 0 )
608 {
609 free( p_64_sps );
610 free( p_64_pps );
611 free( psz_urlc );
612 free( p_es );
613 return VLC_ENOMEM;
614 }
615 }
616 free( p_64_sps );
617 free( p_64_pps );
618 }
619 if( !p_es->psz_fmtp )
620 p_es->psz_fmtp = strdup( "packetization-mode=1" );
621 break;
622 case VLC_CODEC_MP4V:
623 p_es->psz_ptname = "MP4V-ES";
624 if( p_fmt->i_extra > 0 )
625 {
626 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
627 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
628 if( asprintf( &p_es->psz_fmtp,
629 "profile-level-id=3; config=%s;", p_hexa ) == -1 )
630 p_es->psz_fmtp = NULL;
631 free( p_hexa );
632 }
633 break;
634 case VLC_CODEC_MP4A:
635 p_es->psz_ptname = "mpeg4-generic";
636 p_es->i_clock_rate = p_fmt->audio.i_rate;
637 if( p_fmt->i_extra > 0 )
638 {
639 char *p_hexa = malloc( 2 * p_fmt->i_extra + 1 );
640 sprintf_hexa( p_hexa, p_fmt->p_extra, p_fmt->i_extra );
641 if( asprintf( &p_es->psz_fmtp,
642 "streamtype=5; profile-level-id=15; mode=AAC-hbr; "
643 "config=%s; SizeLength=13;IndexLength=3; "
644 "IndexDeltaLength=3; Profile=1;", p_hexa ) == -1 )
645 p_es->psz_fmtp = NULL;
646 free( p_hexa );
647 }
648 break;
649 case VLC_FOURCC( 'm', 'p', '2', 't' ):
650 p_media->psz_mux = "ts";
651 p_es->i_payload_type = 33;
652 p_es->psz_ptname = "MP2T";
653 break;
654 case VLC_FOURCC( 'm', 'p', '2', 'p' ):
655 p_media->psz_mux = "ps";
656 p_es->psz_ptname = "MP2P";
657 break;
658 case VLC_CODEC_AMR_NB:
659 p_es->psz_ptname = "AMR";
660 p_es->i_clock_rate = 8000;
661 if(p_fmt->audio.i_channels == 2 )
662 p_es->i_channels = 2;
663 p_es->psz_fmtp = strdup( "octet-align=1" );
664 break;
665 case VLC_CODEC_AMR_WB:
666 p_es->psz_ptname = "AMR-WB";
667 p_es->i_clock_rate = 16000;
668 if(p_fmt->audio.i_channels == 2 )
669 p_es->i_channels = 2;
670 p_es->psz_fmtp = strdup( "octet-align=1" );
671 break;
672
673 default:
674 msg_Err( p_vod, "cannot add this stream (unsupported "
675 "codec: %4.4s)", (char*)&p_fmt->i_codec );
676 free( psz_urlc );
677 free( p_es );
678 return VLC_EGENERIC;
679 }
680
681 vod_sys_t *p_sys = p_vod->p_sys;
682 p_es->p_rtsp_url =
683 httpd_UrlNew( p_sys->p_rtsp_host, psz_urlc, NULL, NULL );
684
685 if( !p_es->p_rtsp_url )
686 {
687 msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
688 free( psz_urlc );
689 free( p_es );
690 return VLC_EGENERIC;
691 }
692 free( psz_urlc );
693
694 httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
695 RtspCallbackES, (void*)p_es );
696 httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
697 RtspCallbackES, (void*)p_es );
698 httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
699 RtspCallbackES, (void*)p_es );
700 httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
701 RtspCallbackES, (void*)p_es );
702
703 es_format_Copy( &p_es->fmt, p_fmt );
704 p_es->p_vod = p_vod;
705 p_es->p_media = p_media;
706
707 vlc_mutex_lock( &p_media->lock );
708 TAB_APPEND( p_media->i_es, p_media->es, p_es );
709 vlc_mutex_unlock( &p_media->lock );
710
711 return VLC_SUCCESS;
712 }
713
714 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
715 {
716 media_es_t *p_es = NULL;
717
718 /* Find the ES */
719 for( int i = 0; i < p_media->i_es; i++ )
720 {
721 if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
722 p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
723 p_media->es[i]->fmt.i_id == p_fmt->i_id )
724 {
725 p_es = p_media->es[i];
726 }
727 }
728 if( !p_es ) return;
729
730 msg_Dbg( p_vod, " - Removing ES %4.4s", (char *)&p_fmt->i_codec );
731
732 vlc_mutex_lock( &p_media->lock );
733 TAB_REMOVE( p_media->i_es, p_media->es, p_es );
734 vlc_mutex_unlock( &p_media->lock );
735
736 free( p_es->psz_fmtp );
737
738 if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
739 es_format_Clean( &p_es->fmt );
740 free( p_es );
741 }
742
743 static void CommandPush( vod_t *p_vod, rtsp_cmd_type_t i_type, vod_media_t *p_media, const char *psz_session, int64_t i_arg,
744 double f_arg, const char *psz_arg )
745 {
746 rtsp_cmd_t cmd;
747 block_t *p_cmd;
748
749 memset( &cmd, 0, sizeof(cmd) );
750 cmd.i_type = i_type;
751 cmd.p_media = p_media;
752 if( p_media )
753 cmd.i_media_id = p_media->id;
754 if( psz_session )
755 cmd.psz_session = strdup(psz_session);
756 cmd.i_arg = i_arg;
757 cmd.f_arg = f_arg;
758 if( psz_arg )
759 cmd.psz_arg = strdup(psz_arg);
760
761 p_cmd = block_Alloc( sizeof(rtsp_cmd_t) );
762 memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
763
764 vod_sys_t *p_sys = p_vod->p_sys;
765 block_FifoPut( p_sys->p_fifo_cmd, p_cmd );
766 }
767
768 static void* CommandThread( void *obj )
769 {
770 vod_t *p_vod = (vod_t*)obj;
771 vod_sys_t *p_sys = p_vod->p_sys;
772 int canc = vlc_savecancel ();
773
774 for( ;; )
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 if ( cmd.i_type == RTSP_CMD_TYPE_ADD )
791 {
792 TAB_APPEND( p_sys->i_media, p_sys->media, cmd.p_media );
793 goto next;
794 }
795
796 if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
797 {
798 MediaDel(p_vod, cmd.p_media);
799 goto next;
800 }
801
802 /* */
803 for( i = 0; i < p_sys->i_media; i++ )
804 {
805 if( p_sys->media[i]->id == cmd.i_media_id )
806 break;
807 }
808 if( i >= p_sys->i_media )
809 {
810 goto next;
811 }
812 p_media = p_sys->media[i];
813
814 switch( cmd.i_type )
815 {
816 case RTSP_CMD_TYPE_PLAY:
817 cmd.i_arg = -1;
818 vod_MediaControl( p_vod, p_media, cmd.psz_session,
819 VOD_MEDIA_PLAY, cmd.psz_arg, &cmd.i_arg );
820 break;
821 case RTSP_CMD_TYPE_PAUSE:
822 cmd.i_arg = -1;
823 vod_MediaControl( p_vod, p_media, cmd.psz_session,
824 VOD_MEDIA_PAUSE, &cmd.i_arg );
825 break;
826
827 case RTSP_CMD_TYPE_STOP:
828 vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
829 break;
830
831 case RTSP_CMD_TYPE_SEEK:
832 vod_MediaControl( p_vod, p_media, cmd.psz_session,
833 VOD_MEDIA_SEEK, cmd.i_arg );
834 break;
835
836 case RTSP_CMD_TYPE_REWIND:
837 vod_MediaControl( p_vod, p_media, cmd.psz_session,
838 VOD_MEDIA_REWIND, cmd.f_arg );
839 break;
840
841 case RTSP_CMD_TYPE_FORWARD:
842 vod_MediaControl( p_vod, p_media, cmd.psz_session,
843 VOD_MEDIA_FORWARD, cmd.f_arg );
844 break;
845
846 default:
847 break;
848 }
849
850 next:
851 free( cmd.psz_session );
852 free( cmd.psz_arg );
853 }
854
855 vlc_restorecancel (canc);
856 return NULL;
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 = calloc( 1, sizeof(rtsp_client_t) );
865
866 if( !p_rtsp )
867 return NULL;
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 vod_sys_t *p_sys = p_media->p_vod->p_sys;
874 p_sys->i_connections++;
875 msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
876 psz_session, p_sys->i_throttle_users );
877
878 return p_rtsp;
879 }
880
881 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
882 {
883 for( int i = 0; psz_session && i < p_media->i_rtsp; i++ )
884 {
885 if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
886 return p_media->rtsp[i];
887 }
888
889 return NULL;
890 }
891
892 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
893 {
894 vod_sys_t *p_sys = p_media->p_vod->p_sys;
895 p_sys->i_connections--;
896 msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
897 p_rtsp->psz_session, p_sys->i_throttle_users );
898
899 while( p_rtsp->i_es )
900 {
901 p_rtsp->i_es--;
902 free( p_rtsp->es[p_rtsp->i_es] );
903 }
904 free( p_rtsp->es );
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
913 static int64_t ParseNPT (const char *str)
914 {
915 locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
916 locale_t oldloc = uselocale (loc);
917 unsigned hour, min;
918 float sec;
919
920 if (sscanf (str, "%u:%u:%f", &hour, &min, &sec) == 3)
921 sec += ((hour * 60) + min) * 60;
922 else
923 if (sscanf (str, "%f", &sec) != 1)
924 sec = 0.;
925
926 if (loc != (locale_t)0)
927 {
928 uselocale (oldloc);
929 freelocale (loc);
930 }
931 return vlc_tick_from_sec( sec );
932 }
933
934
935 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
936 httpd_message_t *answer, const httpd_message_t *query )
937 {
938 vod_media_t *p_media = (vod_media_t*)p_args;
939 vod_t *p_vod = p_media->p_vod;
940 vod_sys_t *p_sys = p_vod->p_sys;
941 const char *psz_transport = NULL;
942 const char *psz_playnow = NULL; /* support option: x-playNow */
943 const char *psz_session = NULL;
944 const char *psz_cseq = NULL;
945 rtsp_client_t *p_rtsp;
946 int i_cseq = 0;
947
948 if( answer == NULL || query == NULL ) return VLC_SUCCESS;
949
950 msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
951
952 answer->i_proto = HTTPD_PROTO_RTSP;
953 answer->i_version = query->i_version;
954 answer->i_type = HTTPD_MSG_ANSWER;
955 answer->i_body = 0;
956 answer->p_body = NULL;
957
958 switch( query->i_type )
959 {
960 case HTTPD_MSG_SETUP:
961 {
962 psz_playnow = httpd_MsgGet( query, "x-playNow" );
963 psz_transport = httpd_MsgGet( query, "Transport" );
964 if( psz_transport == NULL )
965 {
966 answer->i_status = 400;
967 break;
968 }
969 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
970
971 if( strstr( psz_transport, "unicast" ) &&
972 strstr( psz_transport, "client_port=" ) )
973 {
974 rtsp_client_t *p_rtsp = NULL;
975 char ip[NI_MAXNUMERICHOST];
976 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
977 strlen("client_port=") );
978
979 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
980 strstr( psz_transport, "RAW/RAW/UDP" ) )
981 {
982 p_media->psz_mux = p_sys->psz_raw_mux;
983 p_media->b_raw = true;
984 }
985
986 if( httpd_ClientIP( cl, ip, NULL ) == NULL )
987 {
988 answer->i_status = 500;
989 answer->i_body = 0;
990 answer->p_body = NULL;
991 break;
992 }
993
994 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
995 ip, i_port );
996
997 psz_session = httpd_MsgGet( query, "Session" );
998 if( !psz_session || !*psz_session )
999 {
1000 char *psz_new;
1001 if( ( p_sys->i_throttle_users > 0 ) &&
1002 ( p_sys->i_connections >= p_sys->i_throttle_users ) )
1003 {
1004 answer->i_status = 503;
1005 answer->i_body = 0;
1006 answer->p_body = NULL;
1007 break;
1008 }
1009 #warning Should use secure randomness here! (spoofing risk)
1010 if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1011 return VLC_ENOMEM;
1012 psz_session = psz_new;
1013
1014 p_rtsp = RtspClientNew( p_media, psz_new );
1015 if( !p_rtsp )
1016 {
1017 answer->i_status = 454;
1018 answer->i_body = 0;
1019 answer->p_body = NULL;
1020 break;
1021 }
1022 }
1023 else
1024 {
1025 p_rtsp = RtspClientGet( p_media, psz_session );
1026 if( !p_rtsp )
1027 {
1028 answer->i_status = 454;
1029 answer->i_body = 0;
1030 answer->p_body = NULL;
1031 break;
1032 }
1033 }
1034
1035 answer->i_status = 200;
1036 answer->i_body = 0;
1037 answer->p_body = NULL;
1038
1039 if( p_media->b_raw )
1040 {
1041 p_rtsp->i_port_raw = i_port;
1042
1043 if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1044 {
1045 httpd_MsgAdd( answer, "Transport",
1046 "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1047 i_port, i_port + 1 );
1048 }
1049 else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1050 {
1051 httpd_MsgAdd( answer, "Transport",
1052 "RAW/RAW/UDP;unicast;client_port=%d-%d",
1053 i_port, i_port + 1 );
1054 }
1055 }
1056 else
1057 httpd_MsgAdd( answer, "Transport",
1058 "RTP/AVP/UDP;unicast;client_port=%d-%d",
1059 i_port, i_port + 1 );
1060 }
1061 else /* TODO strstr( psz_transport, "interleaved" ) ) */
1062 {
1063 answer->i_status = 461;
1064 answer->i_body = 0;
1065 answer->p_body = NULL;
1066 }
1067
1068 /* Intentional fall-through on x-playNow option in RTSP request */
1069 if( !psz_playnow )
1070 break;
1071 } /* fall through */
1072
1073 case HTTPD_MSG_PLAY:
1074 {
1075 char *psz_output, ip[NI_MAXNUMERICHOST];
1076 int i_port_audio = 0, i_port_video = 0;
1077
1078 /* for now only multicast so easy */
1079 if( !psz_playnow )
1080 {
1081 answer->i_status = 200;
1082 answer->i_body = 0;
1083 answer->p_body = NULL;
1084 }
1085
1086 if( !psz_session )
1087 psz_session = httpd_MsgGet( query, "Session" );
1088 msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1089
1090 p_rtsp = RtspClientGet( p_media, psz_session );
1091 if( !p_rtsp )
1092 {
1093 answer->i_status = 500;
1094 answer->i_body = 0;
1095 answer->p_body = NULL;
1096 break;
1097 }
1098
1099 if( p_rtsp->b_playing )
1100 {
1101 const char *psz_position = httpd_MsgGet( query, "Range" );
1102 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1103 if( psz_position )
1104 psz_position = strstr( psz_position, "npt=" );
1105 if( psz_position && !psz_scale )
1106 {
1107 int64_t i_time = ParseNPT (psz_position + 4);
1108 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1109 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1110 psz_session, i_time, 0.0, NULL );
1111 }
1112 else if( psz_scale )
1113 {
1114 double f_scale = 0.0;
1115 char *end;
1116
1117 f_scale = us_strtod( psz_scale, &end );
1118 if( end > psz_scale )
1119 {
1120 f_scale = (f_scale * 30.0);
1121 if( psz_scale[0] == '-' ) /* rewind */
1122 {
1123 msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1124 CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
1125 psz_session, 0, f_scale, NULL );
1126 }
1127 else if(psz_scale[0] != '1' ) /* fast-forward */
1128 {
1129 msg_Dbg( p_vod, "fastforward request: %s",
1130 psz_scale );
1131 CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
1132 psz_session, 0, f_scale, NULL );
1133 }
1134 }
1135 }
1136 /* unpause, in case it's paused */
1137 CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1138 0, 0.0, "" );
1139 break;
1140 }
1141
1142 if( httpd_ClientIP( cl, ip, NULL ) == NULL ) break;
1143
1144 p_rtsp->b_playing = true;
1145
1146 /* FIXME for != 1 video and 1 audio */
1147 for( int i = 0; i < p_rtsp->i_es; i++ )
1148 {
1149 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1150 i_port_audio = p_rtsp->es[i]->i_port;
1151 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1152 i_port_video = p_rtsp->es[i]->i_port;
1153 }
1154
1155 if( p_media->psz_mux )
1156 {
1157 if( p_media->b_raw )
1158 {
1159 if( asprintf( &psz_output,
1160 "std{access=udp,dst=%s:%i,mux=%s}",
1161 ip, p_rtsp->i_port_raw, p_media->psz_mux ) < 0 )
1162 return VLC_ENOMEM;
1163 }
1164 else
1165 {
1166 if( asprintf( &psz_output,
1167 "rtp{dst=%s,port=%i,mux=%s}",
1168 ip, i_port_video, p_media->psz_mux ) < 0 )
1169 return VLC_ENOMEM;
1170 }
1171 }
1172 else
1173 {
1174 if( asprintf( &psz_output,
1175 "rtp{dst=%s,port-video=%i,port-audio=%i}",
1176 ip, i_port_video, i_port_audio ) < 0 )
1177 return VLC_ENOMEM;
1178 }
1179
1180 CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1181 0, 0.0, psz_output );
1182 free( psz_output );
1183 break;
1184 }
1185
1186 case HTTPD_MSG_DESCRIBE:
1187 {
1188 char *psz_sdp =
1189 SDPGenerate( p_media, cl );
1190
1191 if( psz_sdp != NULL )
1192 {
1193 answer->i_status = 200;
1194 httpd_MsgAdd( answer, "Content-type", "%s",
1195 "application/sdp" );
1196
1197 answer->p_body = (uint8_t *)psz_sdp;
1198 answer->i_body = strlen( psz_sdp );
1199 }
1200 else
1201 {
1202 answer->i_status = 500;
1203 answer->p_body = NULL;
1204 answer->i_body = 0;
1205 }
1206 break;
1207 }
1208
1209 case HTTPD_MSG_PAUSE:
1210 psz_session = httpd_MsgGet( query, "Session" );
1211 msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1212
1213 p_rtsp = RtspClientGet( p_media, psz_session );
1214 if( !p_rtsp ) break;
1215
1216 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1217 0, 0.0, NULL );
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, 0.0, 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/%s", VERSION );
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_sys->i_session_timeout >= 0 )
1261 httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1262 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 vod_sys_t *p_sys = p_vod->p_sys;
1278 rtsp_client_t *p_rtsp = NULL;
1279 const char *psz_transport = NULL;
1280 const char *psz_playnow = NULL; /* support option: x-playNow */
1281 const char *psz_session = NULL;
1282 const char *psz_position = NULL;
1283 const char *psz_cseq = NULL;
1284 int i_cseq = 0;
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 ) == 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_sys->i_throttle_users > 0 ) &&
1329 ( p_sys->i_connections >= 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 #warning Session ID should be securely random (spoofing risk)
1337 if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1338 return VLC_ENOMEM;
1339 psz_session = psz_new;
1340
1341 p_rtsp = RtspClientNew( p_media, psz_new );
1342 if( !p_rtsp )
1343 {
1344 answer->i_status = 454;
1345 answer->i_body = 0;
1346 answer->p_body = NULL;
1347 break;
1348 }
1349 }
1350 else
1351 {
1352 p_rtsp = RtspClientGet( p_media, psz_session );
1353 if( !p_rtsp )
1354 {
1355 answer->i_status = 454;
1356 answer->i_body = 0;
1357 answer->p_body = NULL;
1358 break;
1359 }
1360 }
1361
1362 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1363 if( !p_rtsp_es )
1364 {
1365 answer->i_status = 500;
1366 answer->i_body = 0;
1367 answer->p_body = NULL;
1368 break;
1369 }
1370 p_rtsp_es->i_port = i_port;
1371 p_rtsp_es->p_media_es = p_es;
1372 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1373
1374 answer->i_status = 200;
1375 answer->i_body = 0;
1376 answer->p_body = NULL;
1377
1378 if( p_media->b_raw )
1379 {
1380 if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1381 {
1382 httpd_MsgAdd( answer, "Transport",
1383 "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1384 p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1385 }
1386 else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1387 {
1388 httpd_MsgAdd( answer, "Transport",
1389 "RAW/RAW/UDP;unicast;client_port=%d-%d",
1390 p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1391 }
1392 }
1393 else
1394 {
1395 httpd_MsgAdd( answer, "Transport",
1396 "RTP/AVP/UDP;unicast;client_port=%d-%d",
1397 p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1398 }
1399 }
1400 else /* TODO strstr( psz_transport, "interleaved" ) ) */
1401 {
1402 answer->i_status = 461;
1403 answer->i_body = 0;
1404 answer->p_body = NULL;
1405 }
1406
1407 /* Intentional fall-through on x-playNow option in RTSP request */
1408 if( !psz_playnow )
1409 break;
1410 /* fall through */
1411
1412 case HTTPD_MSG_PLAY:
1413 /* This is kind of a kludge. Should we only support Aggregate
1414 * Operations ? */
1415 psz_session = httpd_MsgGet( query, "Session" );
1416 msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1417
1418 p_rtsp = RtspClientGet( p_media, psz_session );
1419
1420 psz_position = httpd_MsgGet( query, "Range" );
1421 if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1422 if( psz_position )
1423 {
1424 int64_t i_time = ParseNPT (psz_position + 4);
1425 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1426 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1427 psz_session, i_time, 0.0, NULL );
1428 }
1429
1430 if( !psz_playnow )
1431 {
1432 answer->i_status = 200;
1433 answer->i_body = 0;
1434 answer->p_body = NULL;
1435 }
1436 break;
1437
1438 case HTTPD_MSG_TEARDOWN:
1439 answer->i_status = 200;
1440 answer->i_body = 0;
1441 answer->p_body = NULL;
1442
1443 psz_session = httpd_MsgGet( query, "Session" );
1444 msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1445
1446 p_rtsp = RtspClientGet( p_media, psz_session );
1447 if( !p_rtsp ) break;
1448
1449 for( int i = 0; i < p_rtsp->i_es; i++ )
1450 {
1451 rtsp_client_es_t *es = p_rtsp->es[i];
1452 if( es->p_media_es == p_es )
1453 {
1454 TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, es );
1455 break;
1456 }
1457 }
1458
1459 if( !p_rtsp->i_es )
1460 {
1461 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1462 0, 0.0, NULL );
1463 RtspClientDel( p_media, p_rtsp );
1464 }
1465 break;
1466
1467 case HTTPD_MSG_PAUSE:
1468 /* This is kind of a kludge. Should we only support Aggregate
1469 * Operations ? */
1470 psz_session = httpd_MsgGet( query, "Session" );
1471 msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1472
1473 p_rtsp = RtspClientGet( p_media, psz_session );
1474 if( !p_rtsp ) break;
1475
1476 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1477 0, 0.0, NULL );
1478
1479 answer->i_status = 200;
1480 answer->i_body = 0;
1481 answer->p_body = NULL;
1482 break;
1483
1484 default:
1485 return VLC_EGENERIC;
1486 }
1487
1488 httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1489 httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1490 psz_cseq = httpd_MsgGet( query, "Cseq" );
1491 if (psz_cseq)
1492 i_cseq = atoi( psz_cseq );
1493 else
1494 i_cseq = 0;
1495 httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1496 httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1497
1498 if( psz_session )
1499 httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1500
1501 return VLC_SUCCESS;
1502 }
1503
1504 /*****************************************************************************
1505 * SDPGenerate: TODO
1506 * FIXME: need to be moved to a common place ?
1507 *****************************************************************************/
1508 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1509 {
1510 struct vlc_memstream sdp;
1511 char ip[NI_MAXNUMERICHOST];
1512 const char *psz_control;
1513 int port;
1514
1515 if( httpd_ServerIP( cl, ip, &port ) == NULL )
1516 return NULL;
1517
1518 bool ipv6 = ( strchr( ip, ':' ) != NULL );
1519
1520 psz_control = ipv6 ? p_media->psz_rtsp_control_v6
1521 : p_media->psz_rtsp_control_v4;
1522
1523 /* Dummy destination address for RTSP */
1524 struct sockaddr_storage dst;
1525 socklen_t dstlen = ipv6 ? sizeof( struct sockaddr_in6 )
1526 : sizeof( struct sockaddr_in );
1527 memset (&dst, 0, dstlen);
1528 dst.ss_family = ipv6 ? AF_INET6 : AF_INET;
1529 #ifdef HAVE_SA_LEN
1530 dst.ss_len = dstlen;
1531 #endif
1532
1533 if( vlc_sdp_Start( &sdp, VLC_OBJECT( p_media->p_vod ), "sout-rtp-",
1534 NULL, 0, (struct sockaddr *)&dst, dstlen ) )
1535 return NULL;
1536
1537 if( p_media->i_length > 0 )
1538 {
1539 lldiv_t d = lldiv( MS_FROM_VLC_TICK(p_media->i_length), VLC_TICK_FROM_MS(1) );
1540 sdp_AddAttribute( &sdp, "range","npt=0-%lld.%03u", d.quot,
1541 (unsigned)d.rem );
1542 }
1543
1544 for( int i = 0; i < p_media->i_es; i++ )
1545 {
1546 media_es_t *p_es = p_media->es[i];
1547 const char *mime_major; /* major MIME type */
1548
1549 switch( p_es->fmt.i_cat )
1550 {
1551 case VIDEO_ES:
1552 mime_major = "video";
1553 break;
1554 case AUDIO_ES:
1555 mime_major = "audio";
1556 break;
1557 case SPU_ES:
1558 mime_major = "text";
1559 break;
1560 default:
1561 continue;
1562 }
1563
1564 sdp_AddMedia( &sdp, mime_major, "RTP/AVP", 0 /* p_es->i_port */,
1565 p_es->i_payload_type, false, 0,
1566 p_es->psz_ptname, p_es->i_clock_rate, p_es->i_channels,
1567 p_es->psz_fmtp );
1568
1569 sdp_AddAttribute( &sdp, "control", psz_control, ip, port, i );
1570 }
1571
1572 return vlc_memstream_close( &sdp ) ? NULL : sdp.ptr;
1573 }
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