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chromecast: lower vorbis encoding quality
[vlc.git] / modules / misc / rtsp.c
blob74091f07180ec9542953149e2ee55622066d5099
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 mtime_t i_length;
163 };
164
165 struct vod_sys_t
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 };
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 p_es->p_rtsp_url =
682 httpd_UrlNew( p_vod->p_sys->p_rtsp_host, psz_urlc, NULL, NULL );
683
684 if( !p_es->p_rtsp_url )
685 {
686 msg_Err( p_vod, "cannot create RTSP url (%s)", psz_urlc );
687 free( psz_urlc );
688 free( p_es );
689 return VLC_EGENERIC;
690 }
691 free( psz_urlc );
692
693 httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_SETUP,
694 RtspCallbackES, (void*)p_es );
695 httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_TEARDOWN,
696 RtspCallbackES, (void*)p_es );
697 httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PLAY,
698 RtspCallbackES, (void*)p_es );
699 httpd_UrlCatch( p_es->p_rtsp_url, HTTPD_MSG_PAUSE,
700 RtspCallbackES, (void*)p_es );
701
702 es_format_Copy( &p_es->fmt, p_fmt );
703 p_es->p_vod = p_vod;
704 p_es->p_media = p_media;
705
706 vlc_mutex_lock( &p_media->lock );
707 TAB_APPEND( p_media->i_es, p_media->es, p_es );
708 vlc_mutex_unlock( &p_media->lock );
709
710 return VLC_SUCCESS;
711 }
712
713 static void MediaDelES( vod_t *p_vod, vod_media_t *p_media, es_format_t *p_fmt)
714 {
715 media_es_t *p_es = NULL;
716
717 /* Find the ES */
718 for( int i = 0; i < p_media->i_es; i++ )
719 {
720 if( p_media->es[i]->fmt.i_cat == p_fmt->i_cat &&
721 p_media->es[i]->fmt.i_codec == p_fmt->i_codec &&
722 p_media->es[i]->fmt.i_id == p_fmt->i_id )
723 {
724 p_es = p_media->es[i];
725 }
726 }
727 if( !p_es ) return;
728
729 msg_Dbg( p_vod, " - Removing ES %4.4s", (char *)&p_fmt->i_codec );
730
731 vlc_mutex_lock( &p_media->lock );
732 TAB_REMOVE( p_media->i_es, p_media->es, p_es );
733 vlc_mutex_unlock( &p_media->lock );
734
735 free( p_es->psz_fmtp );
736
737 if( p_es->p_rtsp_url ) httpd_UrlDelete( p_es->p_rtsp_url );
738 es_format_Clean( &p_es->fmt );
739 free( p_es );
740 }
741
742 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,
743 double f_arg, const char *psz_arg )
744 {
745 rtsp_cmd_t cmd;
746 block_t *p_cmd;
747
748 memset( &cmd, 0, sizeof(cmd) );
749 cmd.i_type = i_type;
750 cmd.p_media = p_media;
751 if( p_media )
752 cmd.i_media_id = p_media->id;
753 if( psz_session )
754 cmd.psz_session = strdup(psz_session);
755 cmd.i_arg = i_arg;
756 cmd.f_arg = f_arg;
757 if( psz_arg )
758 cmd.psz_arg = strdup(psz_arg);
759
760 p_cmd = block_Alloc( sizeof(rtsp_cmd_t) );
761 memcpy( p_cmd->p_buffer, &cmd, sizeof(cmd) );
762
763 block_FifoPut( p_vod->p_sys->p_fifo_cmd, p_cmd );
764 }
765
766 static void* CommandThread( void *obj )
767 {
768 vod_t *p_vod = (vod_t*)obj;
769 vod_sys_t *p_sys = p_vod->p_sys;
770 int canc = vlc_savecancel ();
771
772 for( ;; )
773 {
774 block_t *p_block_cmd = block_FifoGet( p_sys->p_fifo_cmd );
775 rtsp_cmd_t cmd;
776 vod_media_t *p_media = NULL;
777 int i;
778
779 if( !p_block_cmd )
780 break;
781
782 memcpy( &cmd, p_block_cmd->p_buffer, sizeof(cmd) );
783 block_Release( p_block_cmd );
784
785 if( cmd.i_type == RTSP_CMD_TYPE_NONE )
786 break;
787
788 if ( cmd.i_type == RTSP_CMD_TYPE_ADD )
789 {
790 TAB_APPEND( p_sys->i_media, p_sys->media, cmd.p_media );
791 goto next;
792 }
793
794 if ( cmd.i_type == RTSP_CMD_TYPE_DEL )
795 {
796 MediaDel(p_vod, cmd.p_media);
797 goto next;
798 }
799
800 /* */
801 for( i = 0; i < p_sys->i_media; i++ )
802 {
803 if( p_sys->media[i]->id == cmd.i_media_id )
804 break;
805 }
806 if( i >= p_sys->i_media )
807 {
808 goto next;
809 }
810 p_media = p_sys->media[i];
811
812 switch( cmd.i_type )
813 {
814 case RTSP_CMD_TYPE_PLAY:
815 cmd.i_arg = -1;
816 vod_MediaControl( p_vod, p_media, cmd.psz_session,
817 VOD_MEDIA_PLAY, cmd.psz_arg, &cmd.i_arg );
818 break;
819 case RTSP_CMD_TYPE_PAUSE:
820 cmd.i_arg = -1;
821 vod_MediaControl( p_vod, p_media, cmd.psz_session,
822 VOD_MEDIA_PAUSE, &cmd.i_arg );
823 break;
824
825 case RTSP_CMD_TYPE_STOP:
826 vod_MediaControl( p_vod, p_media, cmd.psz_session, VOD_MEDIA_STOP );
827 break;
828
829 case RTSP_CMD_TYPE_SEEK:
830 vod_MediaControl( p_vod, p_media, cmd.psz_session,
831 VOD_MEDIA_SEEK, cmd.i_arg );
832 break;
833
834 case RTSP_CMD_TYPE_REWIND:
835 vod_MediaControl( p_vod, p_media, cmd.psz_session,
836 VOD_MEDIA_REWIND, cmd.f_arg );
837 break;
838
839 case RTSP_CMD_TYPE_FORWARD:
840 vod_MediaControl( p_vod, p_media, cmd.psz_session,
841 VOD_MEDIA_FORWARD, cmd.f_arg );
842 break;
843
844 default:
845 break;
846 }
847
848 next:
849 free( cmd.psz_session );
850 free( cmd.psz_arg );
851 }
852
853 vlc_restorecancel (canc);
854 return NULL;
855 }
856
857 /****************************************************************************
858 * RTSP server implementation
859 ****************************************************************************/
860 static rtsp_client_t *RtspClientNew( vod_media_t *p_media, char *psz_session )
861 {
862 rtsp_client_t *p_rtsp = calloc( 1, sizeof(rtsp_client_t) );
863
864 if( !p_rtsp )
865 return NULL;
866 p_rtsp->es = 0;
867
868 p_rtsp->psz_session = psz_session;
869 TAB_APPEND( p_media->i_rtsp, p_media->rtsp, p_rtsp );
870
871 p_media->p_vod->p_sys->i_connections++;
872 msg_Dbg( p_media->p_vod, "new session: %s, connections: %d",
873 psz_session, p_media->p_vod->p_sys->i_throttle_users );
874
875 return p_rtsp;
876 }
877
878 static rtsp_client_t *RtspClientGet( vod_media_t *p_media, const char *psz_session )
879 {
880 for( int i = 0; psz_session && i < p_media->i_rtsp; i++ )
881 {
882 if( !strcmp( p_media->rtsp[i]->psz_session, psz_session ) )
883 return p_media->rtsp[i];
884 }
885
886 return NULL;
887 }
888
889 static void RtspClientDel( vod_media_t *p_media, rtsp_client_t *p_rtsp )
890 {
891 p_media->p_vod->p_sys->i_connections--;
892 msg_Dbg( p_media->p_vod, "closing session: %s, connections: %d",
893 p_rtsp->psz_session, p_media->p_vod->p_sys->i_throttle_users );
894
895 while( p_rtsp->i_es )
896 {
897 p_rtsp->i_es--;
898 free( p_rtsp->es[p_rtsp->i_es] );
899 }
900 free( p_rtsp->es );
901
902 TAB_REMOVE( p_media->i_rtsp, p_media->rtsp, p_rtsp );
903
904 free( p_rtsp->psz_session );
905 free( p_rtsp );
906 }
907
908
909 static int64_t ParseNPT (const char *str)
910 {
911 locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
912 locale_t oldloc = uselocale (loc);
913 unsigned hour, min;
914 float sec;
915
916 if (sscanf (str, "%u:%u:%f", &hour, &min, &sec) == 3)
917 sec += ((hour * 60) + min) * 60;
918 else
919 if (sscanf (str, "%f", &sec) != 1)
920 sec = 0.;
921
922 if (loc != (locale_t)0)
923 {
924 uselocale (oldloc);
925 freelocale (loc);
926 }
927 return sec * CLOCK_FREQ;
928 }
929
930
931 static int RtspCallback( httpd_callback_sys_t *p_args, httpd_client_t *cl,
932 httpd_message_t *answer, const httpd_message_t *query )
933 {
934 vod_media_t *p_media = (vod_media_t*)p_args;
935 vod_t *p_vod = p_media->p_vod;
936 const char *psz_transport = NULL;
937 const char *psz_playnow = NULL; /* support option: x-playNow */
938 const char *psz_session = NULL;
939 const char *psz_cseq = NULL;
940 rtsp_client_t *p_rtsp;
941 int i_cseq = 0;
942
943 if( answer == NULL || query == NULL ) return VLC_SUCCESS;
944
945 msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
946
947 answer->i_proto = HTTPD_PROTO_RTSP;
948 answer->i_version = query->i_version;
949 answer->i_type = HTTPD_MSG_ANSWER;
950 answer->i_body = 0;
951 answer->p_body = NULL;
952
953 switch( query->i_type )
954 {
955 case HTTPD_MSG_SETUP:
956 {
957 psz_playnow = httpd_MsgGet( query, "x-playNow" );
958 psz_transport = httpd_MsgGet( query, "Transport" );
959 if( psz_transport == NULL )
960 {
961 answer->i_status = 400;
962 break;
963 }
964 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
965
966 if( strstr( psz_transport, "unicast" ) &&
967 strstr( psz_transport, "client_port=" ) )
968 {
969 rtsp_client_t *p_rtsp = NULL;
970 char ip[NI_MAXNUMERICHOST];
971 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
972 strlen("client_port=") );
973
974 if( strstr( psz_transport, "MP2T/H2221/UDP" ) ||
975 strstr( psz_transport, "RAW/RAW/UDP" ) )
976 {
977 p_media->psz_mux = p_vod->p_sys->psz_raw_mux;
978 p_media->b_raw = true;
979 }
980
981 if( httpd_ClientIP( cl, ip, NULL ) == NULL )
982 {
983 answer->i_status = 500;
984 answer->i_body = 0;
985 answer->p_body = NULL;
986 break;
987 }
988
989 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
990 ip, i_port );
991
992 psz_session = httpd_MsgGet( query, "Session" );
993 if( !psz_session || !*psz_session )
994 {
995 char *psz_new;
996 if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
997 ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
998 {
999 answer->i_status = 503;
1000 answer->i_body = 0;
1001 answer->p_body = NULL;
1002 break;
1003 }
1004 #warning Should use secure randomness here! (spoofing risk)
1005 if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1006 return VLC_ENOMEM;
1007 psz_session = psz_new;
1008
1009 p_rtsp = RtspClientNew( p_media, psz_new );
1010 if( !p_rtsp )
1011 {
1012 answer->i_status = 454;
1013 answer->i_body = 0;
1014 answer->p_body = NULL;
1015 break;
1016 }
1017 }
1018 else
1019 {
1020 p_rtsp = RtspClientGet( p_media, psz_session );
1021 if( !p_rtsp )
1022 {
1023 answer->i_status = 454;
1024 answer->i_body = 0;
1025 answer->p_body = NULL;
1026 break;
1027 }
1028 }
1029
1030 answer->i_status = 200;
1031 answer->i_body = 0;
1032 answer->p_body = NULL;
1033
1034 if( p_media->b_raw )
1035 {
1036 p_rtsp->i_port_raw = i_port;
1037
1038 if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1039 {
1040 httpd_MsgAdd( answer, "Transport",
1041 "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1042 i_port, i_port + 1 );
1043 }
1044 else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1045 {
1046 httpd_MsgAdd( answer, "Transport",
1047 "RAW/RAW/UDP;unicast;client_port=%d-%d",
1048 i_port, i_port + 1 );
1049 }
1050 }
1051 else
1052 httpd_MsgAdd( answer, "Transport",
1053 "RTP/AVP/UDP;unicast;client_port=%d-%d",
1054 i_port, i_port + 1 );
1055 }
1056 else /* TODO strstr( psz_transport, "interleaved" ) ) */
1057 {
1058 answer->i_status = 461;
1059 answer->i_body = 0;
1060 answer->p_body = NULL;
1061 }
1062
1063 /* Intentional fall-through on x-playNow option in RTSP request */
1064 if( !psz_playnow )
1065 break;
1066 } /* fall through */
1067
1068 case HTTPD_MSG_PLAY:
1069 {
1070 char *psz_output, ip[NI_MAXNUMERICHOST];
1071 int i_port_audio = 0, i_port_video = 0;
1072
1073 /* for now only multicast so easy */
1074 if( !psz_playnow )
1075 {
1076 answer->i_status = 200;
1077 answer->i_body = 0;
1078 answer->p_body = NULL;
1079 }
1080
1081 if( !psz_session )
1082 psz_session = httpd_MsgGet( query, "Session" );
1083 msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1084
1085 p_rtsp = RtspClientGet( p_media, psz_session );
1086 if( !p_rtsp )
1087 {
1088 answer->i_status = 500;
1089 answer->i_body = 0;
1090 answer->p_body = NULL;
1091 break;
1092 }
1093
1094 if( p_rtsp->b_playing )
1095 {
1096 const char *psz_position = httpd_MsgGet( query, "Range" );
1097 const char *psz_scale = httpd_MsgGet( query, "Scale" );
1098 if( psz_position )
1099 psz_position = strstr( psz_position, "npt=" );
1100 if( psz_position && !psz_scale )
1101 {
1102 int64_t i_time = ParseNPT (psz_position + 4);
1103 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1104 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1105 psz_session, i_time, 0.0, NULL );
1106 }
1107 else if( psz_scale )
1108 {
1109 double f_scale = 0.0;
1110 char *end;
1111
1112 f_scale = us_strtod( psz_scale, &end );
1113 if( end > psz_scale )
1114 {
1115 f_scale = (f_scale * 30.0);
1116 if( psz_scale[0] == '-' ) /* rewind */
1117 {
1118 msg_Dbg( p_vod, "rewind request: %s", psz_scale );
1119 CommandPush( p_vod, RTSP_CMD_TYPE_REWIND, p_media,
1120 psz_session, 0, f_scale, NULL );
1121 }
1122 else if(psz_scale[0] != '1' ) /* fast-forward */
1123 {
1124 msg_Dbg( p_vod, "fastforward request: %s",
1125 psz_scale );
1126 CommandPush( p_vod, RTSP_CMD_TYPE_FORWARD, p_media,
1127 psz_session, 0, f_scale, NULL );
1128 }
1129 }
1130 }
1131 /* unpause, in case it's paused */
1132 CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1133 0, 0.0, "" );
1134 break;
1135 }
1136
1137 if( httpd_ClientIP( cl, ip, NULL ) == NULL ) break;
1138
1139 p_rtsp->b_playing = true;
1140
1141 /* FIXME for != 1 video and 1 audio */
1142 for( int i = 0; i < p_rtsp->i_es; i++ )
1143 {
1144 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == AUDIO_ES )
1145 i_port_audio = p_rtsp->es[i]->i_port;
1146 if( p_rtsp->es[i]->p_media_es->fmt.i_cat == VIDEO_ES )
1147 i_port_video = p_rtsp->es[i]->i_port;
1148 }
1149
1150 if( p_media->psz_mux )
1151 {
1152 if( p_media->b_raw )
1153 {
1154 if( asprintf( &psz_output,
1155 "std{access=udp,dst=%s:%i,mux=%s}",
1156 ip, p_rtsp->i_port_raw, p_media->psz_mux ) < 0 )
1157 return VLC_ENOMEM;
1158 }
1159 else
1160 {
1161 if( asprintf( &psz_output,
1162 "rtp{dst=%s,port=%i,mux=%s}",
1163 ip, i_port_video, p_media->psz_mux ) < 0 )
1164 return VLC_ENOMEM;
1165 }
1166 }
1167 else
1168 {
1169 if( asprintf( &psz_output,
1170 "rtp{dst=%s,port-video=%i,port-audio=%i}",
1171 ip, i_port_video, i_port_audio ) < 0 )
1172 return VLC_ENOMEM;
1173 }
1174
1175 CommandPush( p_vod, RTSP_CMD_TYPE_PLAY, p_media, psz_session,
1176 0, 0.0, psz_output );
1177 free( psz_output );
1178 break;
1179 }
1180
1181 case HTTPD_MSG_DESCRIBE:
1182 {
1183 char *psz_sdp =
1184 SDPGenerate( p_media, cl );
1185
1186 if( psz_sdp != NULL )
1187 {
1188 answer->i_status = 200;
1189 httpd_MsgAdd( answer, "Content-type", "%s",
1190 "application/sdp" );
1191
1192 answer->p_body = (uint8_t *)psz_sdp;
1193 answer->i_body = strlen( psz_sdp );
1194 }
1195 else
1196 {
1197 answer->i_status = 500;
1198 answer->p_body = NULL;
1199 answer->i_body = 0;
1200 }
1201 break;
1202 }
1203
1204 case HTTPD_MSG_PAUSE:
1205 psz_session = httpd_MsgGet( query, "Session" );
1206 msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1207
1208 p_rtsp = RtspClientGet( p_media, psz_session );
1209 if( !p_rtsp ) break;
1210
1211 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1212 0, 0.0, NULL );
1213
1214 answer->i_status = 200;
1215 answer->i_body = 0;
1216 answer->p_body = NULL;
1217 break;
1218
1219 case HTTPD_MSG_TEARDOWN:
1220 /* for now only multicast so easy again */
1221 answer->i_status = 200;
1222 answer->i_body = 0;
1223 answer->p_body = NULL;
1224
1225 psz_session = httpd_MsgGet( query, "Session" );
1226 msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1227
1228 p_rtsp = RtspClientGet( p_media, psz_session );
1229 if( !p_rtsp ) break;
1230
1231 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1232 0, 0.0, NULL );
1233 RtspClientDel( p_media, p_rtsp );
1234 break;
1235
1236 case HTTPD_MSG_GETPARAMETER:
1237 answer->i_status = 200;
1238 answer->i_body = 0;
1239 answer->p_body = NULL;
1240 break;
1241
1242 default:
1243 return VLC_EGENERIC;
1244 }
1245
1246 httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1247 httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1248 psz_cseq = httpd_MsgGet( query, "Cseq" );
1249 psz_cseq ? i_cseq = atoi( psz_cseq ) : 0;
1250 httpd_MsgAdd( answer, "CSeq", "%d", i_cseq );
1251 httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1252
1253 if( psz_session )
1254 {
1255 if( p_media->p_vod->p_sys->i_session_timeout >= 0 )
1256 httpd_MsgAdd( answer, "Session", "%s;timeout=%i", psz_session,
1257 p_media->p_vod->p_sys->i_session_timeout );
1258 else
1259 httpd_MsgAdd( answer, "Session", "%s", psz_session );
1260 }
1261
1262 return VLC_SUCCESS;
1263 }
1264
1265 static int RtspCallbackES( httpd_callback_sys_t *p_args, httpd_client_t *cl,
1266 httpd_message_t *answer,
1267 const httpd_message_t *query )
1268 {
1269 media_es_t *p_es = (media_es_t*)p_args;
1270 vod_media_t *p_media = p_es->p_media;
1271 vod_t *p_vod = p_media->p_vod;
1272 rtsp_client_t *p_rtsp = NULL;
1273 const char *psz_transport = NULL;
1274 const char *psz_playnow = NULL; /* support option: x-playNow */
1275 const char *psz_session = NULL;
1276 const char *psz_position = NULL;
1277 const char *psz_cseq = NULL;
1278 int i_cseq = 0;
1279
1280 if( answer == NULL || query == NULL ) return VLC_SUCCESS;
1281
1282 msg_Dbg( p_vod, "RtspCallback query: type=%d", query->i_type );
1283
1284 answer->i_proto = HTTPD_PROTO_RTSP;
1285 answer->i_version = query->i_version;
1286 answer->i_type = HTTPD_MSG_ANSWER;
1287 answer->i_body = 0;
1288 answer->p_body = NULL;
1289
1290 switch( query->i_type )
1291 {
1292 case HTTPD_MSG_SETUP:
1293 psz_playnow = httpd_MsgGet( query, "x-playNow" );
1294 psz_transport = httpd_MsgGet( query, "Transport" );
1295
1296 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: transport=%s", psz_transport );
1297
1298 if( strstr( psz_transport, "unicast" ) &&
1299 strstr( psz_transport, "client_port=" ) )
1300 {
1301 rtsp_client_t *p_rtsp = NULL;
1302 rtsp_client_es_t *p_rtsp_es = NULL;
1303 char ip[NI_MAXNUMERICHOST];
1304 int i_port = atoi( strstr( psz_transport, "client_port=" ) +
1305 strlen("client_port=") );
1306
1307 if( httpd_ClientIP( cl, ip, NULL ) == NULL )
1308 {
1309 answer->i_status = 500;
1310 answer->i_body = 0;
1311 answer->p_body = NULL;
1312 break;
1313 }
1314
1315 msg_Dbg( p_vod, "HTTPD_MSG_SETUP: unicast ip=%s port=%d",
1316 ip, i_port );
1317
1318 psz_session = httpd_MsgGet( query, "Session" );
1319 if( !psz_session || !*psz_session )
1320 {
1321 char *psz_new;
1322 if( ( p_vod->p_sys->i_throttle_users > 0 ) &&
1323 ( p_vod->p_sys->i_connections >= p_vod->p_sys->i_throttle_users ) )
1324 {
1325 answer->i_status = 503;
1326 answer->i_body = 0;
1327 answer->p_body = NULL;
1328 break;
1329 }
1330 #warning Session ID should be securely random (spoofing risk)
1331 if( asprintf( &psz_new, "%lu", vlc_mrand48() ) < 0 )
1332 return VLC_ENOMEM;
1333 psz_session = psz_new;
1334
1335 p_rtsp = RtspClientNew( p_media, psz_new );
1336 if( !p_rtsp )
1337 {
1338 answer->i_status = 454;
1339 answer->i_body = 0;
1340 answer->p_body = NULL;
1341 break;
1342 }
1343 }
1344 else
1345 {
1346 p_rtsp = RtspClientGet( p_media, psz_session );
1347 if( !p_rtsp )
1348 {
1349 answer->i_status = 454;
1350 answer->i_body = 0;
1351 answer->p_body = NULL;
1352 break;
1353 }
1354 }
1355
1356 p_rtsp_es = malloc( sizeof(rtsp_client_es_t) );
1357 if( !p_rtsp_es )
1358 {
1359 answer->i_status = 500;
1360 answer->i_body = 0;
1361 answer->p_body = NULL;
1362 break;
1363 }
1364 p_rtsp_es->i_port = i_port;
1365 p_rtsp_es->p_media_es = p_es;
1366 TAB_APPEND( p_rtsp->i_es, p_rtsp->es, p_rtsp_es );
1367
1368 answer->i_status = 200;
1369 answer->i_body = 0;
1370 answer->p_body = NULL;
1371
1372 if( p_media->b_raw )
1373 {
1374 if( strstr( psz_transport, "MP2T/H2221/UDP" ) )
1375 {
1376 httpd_MsgAdd( answer, "Transport",
1377 "MP2T/H2221/UDP;unicast;client_port=%d-%d",
1378 p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1379 }
1380 else if( strstr( psz_transport, "RAW/RAW/UDP" ) )
1381 {
1382 httpd_MsgAdd( answer, "Transport",
1383 "RAW/RAW/UDP;unicast;client_port=%d-%d",
1384 p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1385 }
1386 }
1387 else
1388 {
1389 httpd_MsgAdd( answer, "Transport",
1390 "RTP/AVP/UDP;unicast;client_port=%d-%d",
1391 p_rtsp_es->i_port, p_rtsp_es->i_port + 1 );
1392 }
1393 }
1394 else /* TODO strstr( psz_transport, "interleaved" ) ) */
1395 {
1396 answer->i_status = 461;
1397 answer->i_body = 0;
1398 answer->p_body = NULL;
1399 }
1400
1401 /* Intentional fall-through on x-playNow option in RTSP request */
1402 if( !psz_playnow )
1403 break;
1404 /* fall through */
1405
1406 case HTTPD_MSG_PLAY:
1407 /* This is kind of a kludge. Should we only support Aggregate
1408 * Operations ? */
1409 psz_session = httpd_MsgGet( query, "Session" );
1410 msg_Dbg( p_vod, "HTTPD_MSG_PLAY for session: %s", psz_session );
1411
1412 p_rtsp = RtspClientGet( p_media, psz_session );
1413
1414 psz_position = httpd_MsgGet( query, "Range" );
1415 if( psz_position ) psz_position = strstr( psz_position, "npt=" );
1416 if( psz_position )
1417 {
1418 int64_t i_time = ParseNPT (psz_position + 4);
1419 msg_Dbg( p_vod, "seeking request: %s", psz_position );
1420 CommandPush( p_vod, RTSP_CMD_TYPE_SEEK, p_media,
1421 psz_session, i_time, 0.0, NULL );
1422 }
1423
1424 if( !psz_playnow )
1425 {
1426 answer->i_status = 200;
1427 answer->i_body = 0;
1428 answer->p_body = NULL;
1429 }
1430 break;
1431
1432 case HTTPD_MSG_TEARDOWN:
1433 answer->i_status = 200;
1434 answer->i_body = 0;
1435 answer->p_body = NULL;
1436
1437 psz_session = httpd_MsgGet( query, "Session" );
1438 msg_Dbg( p_vod, "HTTPD_MSG_TEARDOWN for session: %s", psz_session);
1439
1440 p_rtsp = RtspClientGet( p_media, psz_session );
1441 if( !p_rtsp ) break;
1442
1443 for( int i = 0; i < p_rtsp->i_es; i++ )
1444 {
1445 rtsp_client_es_t *es = p_rtsp->es[i];
1446 if( es->p_media_es == p_es )
1447 {
1448 TAB_REMOVE( p_rtsp->i_es, p_rtsp->es, es );
1449 break;
1450 }
1451 }
1452
1453 if( !p_rtsp->i_es )
1454 {
1455 CommandPush( p_vod, RTSP_CMD_TYPE_STOP, p_media, psz_session,
1456 0, 0.0, NULL );
1457 RtspClientDel( p_media, p_rtsp );
1458 }
1459 break;
1460
1461 case HTTPD_MSG_PAUSE:
1462 /* This is kind of a kludge. Should we only support Aggregate
1463 * Operations ? */
1464 psz_session = httpd_MsgGet( query, "Session" );
1465 msg_Dbg( p_vod, "HTTPD_MSG_PAUSE for session: %s", psz_session );
1466
1467 p_rtsp = RtspClientGet( p_media, psz_session );
1468 if( !p_rtsp ) break;
1469
1470 CommandPush( p_vod, RTSP_CMD_TYPE_PAUSE, p_media, psz_session,
1471 0, 0.0, NULL );
1472
1473 answer->i_status = 200;
1474 answer->i_body = 0;
1475 answer->p_body = NULL;
1476 break;
1477
1478 default:
1479 return VLC_EGENERIC;
1480 }
1481
1482 httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
1483 httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
1484 psz_cseq = httpd_MsgGet( query, "Cseq" );
1485 if (psz_cseq)
1486 i_cseq = atoi( psz_cseq );
1487 else
1488 i_cseq = 0;
1489 httpd_MsgAdd( answer, "Cseq", "%d", i_cseq );
1490 httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
1491
1492 if( psz_session )
1493 httpd_MsgAdd( answer, "Session", "%s"/*;timeout=5*/, psz_session );
1494
1495 return VLC_SUCCESS;
1496 }
1497
1498 /*****************************************************************************
1499 * SDPGenerate: TODO
1500 * FIXME: need to be moved to a common place ?
1501 *****************************************************************************/
1502 static char *SDPGenerate( const vod_media_t *p_media, httpd_client_t *cl )
1503 {
1504 struct vlc_memstream sdp;
1505 char ip[NI_MAXNUMERICHOST];
1506 const char *psz_control;
1507 int port;
1508
1509 if( httpd_ServerIP( cl, ip, &port ) == NULL )
1510 return NULL;
1511
1512 bool ipv6 = ( strchr( ip, ':' ) != NULL );
1513
1514 psz_control = ipv6 ? p_media->psz_rtsp_control_v6
1515 : p_media->psz_rtsp_control_v4;
1516
1517 /* Dummy destination address for RTSP */
1518 struct sockaddr_storage dst;
1519 socklen_t dstlen = ipv6 ? sizeof( struct sockaddr_in6 )
1520 : sizeof( struct sockaddr_in );
1521 memset (&dst, 0, dstlen);
1522 dst.ss_family = ipv6 ? AF_INET6 : AF_INET;
1523 #ifdef HAVE_SA_LEN
1524 dst.ss_len = dstlen;
1525 #endif
1526
1527 if( vlc_sdp_Start( &sdp, VLC_OBJECT( p_media->p_vod ), "sout-rtp-",
1528 NULL, 0, (struct sockaddr *)&dst, dstlen ) )
1529 return NULL;
1530
1531 if( p_media->i_length > 0 )
1532 {
1533 lldiv_t d = lldiv( p_media->i_length / 1000, 1000 );
1534 sdp_AddAttribute( &sdp, "range","npt=0-%lld.%03u", d.quot,
1535 (unsigned)d.rem );
1536 }
1537
1538 for( int i = 0; i < p_media->i_es; i++ )
1539 {
1540 media_es_t *p_es = p_media->es[i];
1541 const char *mime_major; /* major MIME type */
1542
1543 switch( p_es->fmt.i_cat )
1544 {
1545 case VIDEO_ES:
1546 mime_major = "video";
1547 break;
1548 case AUDIO_ES:
1549 mime_major = "audio";
1550 break;
1551 case SPU_ES:
1552 mime_major = "text";
1553 break;
1554 default:
1555 continue;
1556 }
1557
1558 sdp_AddMedia( &sdp, mime_major, "RTP/AVP", 0 /* p_es->i_port */,
1559 p_es->i_payload_type, false, 0,
1560 p_es->psz_ptname, p_es->i_clock_rate, p_es->i_channels,
1561 p_es->psz_fmtp );
1562
1563 sdp_AddAttribute( &sdp, "control", psz_control, ip, port, i );
1564 }
1565
1566 return vlc_memstream_close( &sdp ) ? NULL : sdp.ptr;
1567 }
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