1 /*****************************************************************************
2 * es_out_timeshift.c: Es Out timeshift.
3 *****************************************************************************
4 * Copyright (C) 2008 Laurent Aimar
7 * Authors: Laurent Aimar < fenrir _AT_ videolan _DOT_ org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
34 #if defined (WIN32) && !defined (UNDER_CE)
37 #ifdef HAVE_SYS_STAT_H
38 # include <sys/stat.h>
41 #include <vlc_common.h>
44 # include <vlc_charset.h>
46 #include <vlc_input.h>
47 #include <vlc_es_out.h>
48 #include <vlc_block.h>
49 #include "input_internal.h"
51 #include "es_out_timeshift.h"
53 /*****************************************************************************
55 *****************************************************************************/
57 /* XXX attribute_packed is (and MUST be) used ONLY to reduce memory usage */
58 #ifdef HAVE_ATTRIBUTE_PACKED
59 # define attribute_packed __attribute__((__packed__))
61 # define attribute_packed
72 typedef struct attribute_packed
78 typedef struct attribute_packed
83 typedef struct attribute_packed
87 int i_offset; /* We do not use file > INT_MAX */
90 typedef struct attribute_packed
127 /* FIXME Really too big (double make the whole thing too big) */
140 typedef struct attribute_packed
149 ts_cmd_control_t control;
153 typedef struct ts_storage_t ts_storage_t;
156 ts_storage_t *p_next;
159 char *psz_file; /* Filename */
160 size_t i_file_max; /* Max size in bytes */
161 int64_t i_file_size;/* Current size in bytes */
162 FILE *p_filew; /* FILE handle for data writing */
163 FILE *p_filer; /* FILE handle for data reading */
177 input_thread_t *p_input;
179 int64_t i_tmp_size_max;
180 const char *psz_tmp_path;
182 /* Lock for all following fields */
188 mtime_t i_pause_date;
194 mtime_t i_rate_delay;
197 mtime_t i_buffering_delay;
200 ts_storage_t *p_storage_r;
201 ts_storage_t *p_storage_w;
214 input_thread_t *p_input;
218 int64_t i_tmp_size_max; /* Maximal temporary file size in byte */
219 char *psz_tmp_path; /* Path for temporary files */
221 /* Lock for all following fields */
226 ts_thread_t *p_thread;
230 bool b_input_paused_source;
232 int i_input_rate_source;
239 static es_out_id_t *Add ( es_out_t *, const es_format_t * );
240 static int Send ( es_out_t *, es_out_id_t *, block_t * );
241 static void Del ( es_out_t *, es_out_id_t * );
242 static int Control( es_out_t *, int i_query, va_list );
243 static void Destroy( es_out_t * );
245 static int TsStart( es_out_t * );
246 static void TsAutoStop( es_out_t * );
248 static void TsStop( ts_thread_t * );
249 static void TsPushCmd( ts_thread_t *, ts_cmd_t * );
250 static int TsPopCmdLocked( ts_thread_t *, ts_cmd_t *, bool b_flush );
251 static bool TsHasCmd( ts_thread_t * );
252 static bool TsIsUnused( ts_thread_t * );
253 static int TsChangePause( ts_thread_t *, bool b_source_paused, bool b_paused, mtime_t i_date );
254 static int TsChangeRate( ts_thread_t *, int i_src_rate, int i_rate );
256 static void *TsRun( vlc_object_t * );
258 static ts_storage_t *TsStorageNew( const char *psz_path, int64_t i_tmp_size_max );
259 static void TsStorageDelete( ts_storage_t * );
260 static void TsStoragePack( ts_storage_t *p_storage );
261 static bool TsStorageIsFull( ts_storage_t *, const ts_cmd_t *p_cmd );
262 static bool TsStorageIsEmpty( ts_storage_t * );
263 static void TsStoragePushCmd( ts_storage_t *, const ts_cmd_t *p_cmd, bool b_flush );
264 static void TsStoragePopCmd( ts_storage_t *p_storage, ts_cmd_t *p_cmd, bool b_flush );
266 static void CmdClean( ts_cmd_t * );
267 static void cmd_cleanup_routine( void *p ) { CmdClean( p ); }
269 static int CmdInitAdd ( ts_cmd_t *, es_out_id_t *, const es_format_t *, bool b_copy );
270 static void CmdInitSend ( ts_cmd_t *, es_out_id_t *, block_t * );
271 static int CmdInitDel ( ts_cmd_t *, es_out_id_t * );
272 static int CmdInitControl( ts_cmd_t *, int i_query, va_list, bool b_copy );
275 static void CmdCleanAdd ( ts_cmd_t * );
276 static void CmdCleanSend ( ts_cmd_t * );
277 static void CmdCleanControl( ts_cmd_t *p_cmd );
279 /* XXX these functions will take the destination es_out_t */
280 static void CmdExecuteAdd ( es_out_t *, ts_cmd_t * );
281 static int CmdExecuteSend ( es_out_t *, ts_cmd_t * );
282 static void CmdExecuteDel ( es_out_t *, ts_cmd_t * );
283 static int CmdExecuteControl( es_out_t *, ts_cmd_t * );
286 static char *GetTmpPath( char *psz_path );
287 static FILE *GetTmpFile( char **ppsz_file, const char *psz_path );
289 /*****************************************************************************
290 * input_EsOutTimeshiftNew:
291 *****************************************************************************/
292 es_out_t *input_EsOutTimeshiftNew( input_thread_t *p_input, es_out_t *p_next_out, int i_rate )
294 es_out_t *p_out = malloc( sizeof(*p_out) );
298 es_out_sys_t *p_sys = malloc( sizeof(*p_sys) );
307 p_out->pf_send = Send;
309 p_out->pf_control = Control;
310 p_out->pf_destroy = Destroy;
311 p_out->p_sys = p_sys;
314 p_sys->b_input_paused = false;
315 p_sys->b_input_paused_source = false;
316 p_sys->p_input = p_input;
317 p_sys->i_input_rate = i_rate;
318 p_sys->i_input_rate_source = i_rate;
320 p_sys->p_out = p_next_out;
321 vlc_mutex_init_recursive( &p_sys->lock );
323 p_sys->b_delayed = false;
324 p_sys->p_thread = NULL;
326 TAB_INIT( p_sys->i_es, p_sys->pp_es );
329 const int i_tmp_size_max = var_CreateGetInteger( p_input, "input-timeshift-granularity" );
330 if( i_tmp_size_max < 0 )
331 p_sys->i_tmp_size_max = 50*1024*1024;
333 p_sys->i_tmp_size_max = __MAX( i_tmp_size_max, 1*1024*1024 );
334 msg_Dbg( p_input, "using timeshift granularity of %d MBytes",
335 (int)p_sys->i_tmp_size_max/(1024*1024) );
337 char *psz_tmp_path = var_CreateGetNonEmptyString( p_input, "input-timeshift-path" );
338 p_sys->psz_tmp_path = GetTmpPath( psz_tmp_path );
339 msg_Dbg( p_input, "using timeshift path '%s'", p_sys->psz_tmp_path );
342 #define S(t) msg_Err( p_input, "SIZEOF("#t")=%d", sizeof(t) )
354 /*****************************************************************************
356 *****************************************************************************/
357 static void Destroy( es_out_t *p_out )
359 es_out_sys_t *p_sys = p_out->p_sys;
361 if( p_sys->b_delayed )
363 TsStop( p_sys->p_thread );
364 p_sys->b_delayed = false;
367 while( p_sys->i_es > 0 )
368 Del( p_out, p_sys->pp_es[0] );
369 TAB_CLEAN( p_sys->i_es, p_sys->pp_es );
371 free( p_sys->psz_tmp_path );
372 vlc_mutex_destroy( &p_sys->lock );
377 static es_out_id_t *Add( es_out_t *p_out, const es_format_t *p_fmt )
379 es_out_sys_t *p_sys = p_out->p_sys;
382 es_out_id_t *p_es = malloc( sizeof( *p_es ) );
386 vlc_mutex_lock( &p_sys->lock );
390 if( CmdInitAdd( &cmd, p_es, p_fmt, p_sys->b_delayed ) )
392 vlc_mutex_unlock( &p_sys->lock );
397 TAB_APPEND( p_sys->i_es, p_sys->pp_es, p_es );
399 if( p_sys->b_delayed )
400 TsPushCmd( p_sys->p_thread, &cmd );
402 CmdExecuteAdd( p_sys->p_out, &cmd );
404 vlc_mutex_unlock( &p_sys->lock );
408 static int Send( es_out_t *p_out, es_out_id_t *p_es, block_t *p_block )
410 es_out_sys_t *p_sys = p_out->p_sys;
412 int i_ret = VLC_SUCCESS;
414 vlc_mutex_lock( &p_sys->lock );
418 CmdInitSend( &cmd, p_es, p_block );
419 if( p_sys->b_delayed )
420 TsPushCmd( p_sys->p_thread, &cmd );
422 i_ret = CmdExecuteSend( p_sys->p_out, &cmd) ;
424 vlc_mutex_unlock( &p_sys->lock );
428 static void Del( es_out_t *p_out, es_out_id_t *p_es )
430 es_out_sys_t *p_sys = p_out->p_sys;
433 vlc_mutex_lock( &p_sys->lock );
437 CmdInitDel( &cmd, p_es );
438 if( p_sys->b_delayed )
439 TsPushCmd( p_sys->p_thread, &cmd );
441 CmdExecuteDel( p_sys->p_out, &cmd );
443 TAB_REMOVE( p_sys->i_es, p_sys->pp_es, p_es );
445 vlc_mutex_unlock( &p_sys->lock );
448 static int ControlLockedGetEmpty( es_out_t *p_out, bool *pb_empty )
450 es_out_sys_t *p_sys = p_out->p_sys;
452 if( p_sys->b_delayed && TsHasCmd( p_sys->p_thread ) )
455 *pb_empty = es_out_GetEmpty( p_sys->p_out );
459 static int ControlLockedGetWakeup( es_out_t *p_out, mtime_t *pi_wakeup )
461 es_out_sys_t *p_sys = p_out->p_sys;
463 if( p_sys->b_delayed )
465 assert( !p_sys->p_input->p->b_can_pace_control );
470 *pi_wakeup = es_out_GetWakeup( p_sys->p_out );
475 static int ControlLockedGetBuffering( es_out_t *p_out, bool *pb_buffering )
477 es_out_sys_t *p_sys = p_out->p_sys;
479 if( p_sys->b_delayed )
480 *pb_buffering = true;
482 *pb_buffering = es_out_GetBuffering( p_sys->p_out );
486 static int ControlLockedSetPauseState( es_out_t *p_out, bool b_source_paused, bool b_paused, mtime_t i_date )
488 es_out_sys_t *p_sys = p_out->p_sys;
491 if( !p_sys->b_delayed && !b_source_paused == !b_paused )
493 i_ret = es_out_SetPauseState( p_sys->p_out, b_source_paused, b_paused, i_date );
497 i_ret = VLC_EGENERIC;
498 if( !p_sys->p_input->p->b_can_pace_control )
500 if( !p_sys->b_delayed )
502 if( p_sys->b_delayed )
503 i_ret = TsChangePause( p_sys->p_thread, b_source_paused, b_paused, i_date );
507 /* XXX we may do it BUT it would be better to finish the clock clean up+improvments
508 * and so be able to advertize correctly pace control property in access
510 msg_Err( p_sys->p_input, "EsOutTimeshift does not work with streams that have space control" );
516 p_sys->b_input_paused_source = b_source_paused;
517 p_sys->b_input_paused = b_paused;
521 static int ControlLockedSetRate( es_out_t *p_out, int i_src_rate, int i_rate )
523 es_out_sys_t *p_sys = p_out->p_sys;
526 if( !p_sys->b_delayed && i_src_rate == i_rate )
528 i_ret = es_out_SetRate( p_sys->p_out, i_src_rate, i_rate );
532 i_ret = VLC_EGENERIC;
533 if( !p_sys->p_input->p->b_can_pace_control )
535 if( !p_sys->b_delayed )
537 if( p_sys->b_delayed )
538 i_ret = TsChangeRate( p_sys->p_thread, i_src_rate, i_rate );
542 /* XXX we may do it BUT it would be better to finish the clock clean up+improvments
543 * and so be able to advertize correctly pace control property in access
545 msg_Err( p_sys->p_input, "EsOutTimeshift does not work with streams that have space control" );
552 p_sys->i_input_rate_source = i_src_rate;
553 p_sys->i_input_rate = i_rate;
557 static int ControlLockedSetTime( es_out_t *p_out, mtime_t i_date )
559 es_out_sys_t *p_sys = p_out->p_sys;
561 if( !p_sys->b_delayed )
562 return es_out_SetTime( p_sys->p_out, i_date );
565 msg_Err( p_sys->p_input, "EsOutTimeshift does not yet support time change" );
568 static int ControlLockedSetFrameNext( es_out_t *p_out )
570 es_out_sys_t *p_sys = p_out->p_sys;
572 return es_out_SetFrameNext( p_sys->p_out );
575 static int ControlLocked( es_out_t *p_out, int i_query, va_list args )
577 es_out_sys_t *p_sys = p_out->p_sys;
581 /* Invalid query for this es_out level */
582 case ES_OUT_SET_ES_BY_ID:
583 case ES_OUT_RESTART_ES_BY_ID:
584 case ES_OUT_SET_ES_DEFAULT_BY_ID:
585 case ES_OUT_GET_ES_OBJECTS_BY_ID:
586 case ES_OUT_SET_DELAY:
587 case ES_OUT_SET_RECORD_STATE:
591 /* Pass-through control */
592 case ES_OUT_SET_MODE:
593 case ES_OUT_SET_GROUP:
595 case ES_OUT_SET_GROUP_PCR:
596 case ES_OUT_RESET_PCR:
597 case ES_OUT_SET_NEXT_DISPLAY_TIME:
598 case ES_OUT_SET_GROUP_META:
599 case ES_OUT_SET_GROUP_EPG:
600 case ES_OUT_SET_ES_SCRAMBLED_STATE:
601 case ES_OUT_DEL_GROUP:
602 case ES_OUT_SET_META:
604 case ES_OUT_RESTART_ES:
605 case ES_OUT_SET_ES_DEFAULT:
606 case ES_OUT_SET_ES_STATE:
607 case ES_OUT_SET_ES_FMT:
608 case ES_OUT_SET_TIMES:
609 case ES_OUT_SET_JITTER:
612 if( CmdInitControl( &cmd, i_query, args, p_sys->b_delayed ) )
614 if( p_sys->b_delayed )
616 TsPushCmd( p_sys->p_thread, &cmd );
619 return CmdExecuteControl( p_sys->p_out, &cmd );
622 /* Special control when delayed */
623 case ES_OUT_GET_ES_STATE:
625 es_out_id_t *p_es = (es_out_id_t*)va_arg( args, es_out_id_t * );
626 bool *pb_enabled = (bool*)va_arg( args, bool* );
628 if( p_sys->b_delayed )
633 return es_out_Control( p_sys->p_out, ES_OUT_GET_ES_STATE, p_es->p_es, pb_enabled );
636 /* Special internal input control */
637 case ES_OUT_GET_EMPTY:
639 bool *pb_empty = (bool*)va_arg( args, bool* );
640 return ControlLockedGetEmpty( p_out, pb_empty );
642 case ES_OUT_GET_WAKE_UP: /* TODO ? */
644 mtime_t *pi_wakeup = (mtime_t*)va_arg( args, mtime_t* );
645 return ControlLockedGetWakeup( p_out, pi_wakeup );
647 case ES_OUT_GET_BUFFERING:
649 bool *pb_buffering = (bool *)va_arg( args, bool* );
650 return ControlLockedGetBuffering( p_out, pb_buffering );
652 case ES_OUT_SET_PAUSE_STATE:
654 const bool b_source_paused = (bool)va_arg( args, int );
655 const bool b_paused = (bool)va_arg( args, int );
656 const mtime_t i_date = (mtime_t) va_arg( args, mtime_t );
658 return ControlLockedSetPauseState( p_out, b_source_paused, b_paused, i_date );
660 case ES_OUT_SET_RATE:
662 const int i_src_rate = (int)va_arg( args, int );
663 const int i_rate = (int)va_arg( args, int );
665 return ControlLockedSetRate( p_out, i_src_rate, i_rate );
667 case ES_OUT_SET_TIME:
669 const mtime_t i_date = (mtime_t)va_arg( args, mtime_t );
671 return ControlLockedSetTime( p_out, i_date );
673 case ES_OUT_SET_FRAME_NEXT:
675 return ControlLockedSetFrameNext( p_out );
677 case ES_OUT_GET_PCR_SYSTEM:
679 if( p_sys->b_delayed )
682 mtime_t *pi_system = (mtime_t*)va_arg( args, mtime_t * );
683 mtime_t *pi_delay = (mtime_t*)va_arg( args, mtime_t * );
684 return es_out_ControlGetPcrSystem( p_sys->p_out, pi_system, pi_delay );
686 case ES_OUT_MODIFY_PCR_SYSTEM:
688 const bool b_absolute = va_arg( args, int );
689 const mtime_t i_system = va_arg( args, mtime_t );
691 if( b_absolute && p_sys->b_delayed )
694 return es_out_ControlModifyPcrSystem( p_sys->p_out, b_absolute, i_system );
697 msg_Err( p_sys->p_input, "Unknown es_out_Control query !" );
702 static int Control( es_out_t *p_out, int i_query, va_list args )
704 es_out_sys_t *p_sys = p_out->p_sys;
707 vlc_mutex_lock( &p_sys->lock );
711 i_ret = ControlLocked( p_out, i_query, args );
713 vlc_mutex_unlock( &p_sys->lock );
718 /*****************************************************************************
720 *****************************************************************************/
721 static void TsDestructor( vlc_object_t *p_this )
723 ts_thread_t *p_ts = (ts_thread_t*)p_this;
725 vlc_cond_destroy( &p_ts->wait );
726 vlc_mutex_destroy( &p_ts->lock );
728 static int TsStart( es_out_t *p_out )
730 es_out_sys_t *p_sys = p_out->p_sys;
733 assert( !p_sys->b_delayed );
735 p_sys->p_thread = p_ts = vlc_custom_create( p_sys->p_input, sizeof(ts_thread_t),
736 VLC_OBJECT_GENERIC, "es out timeshift" );
740 p_ts->i_tmp_size_max = p_sys->i_tmp_size_max;
741 p_ts->psz_tmp_path = p_sys->psz_tmp_path;
742 p_ts->p_input = p_sys->p_input;
743 p_ts->p_out = p_sys->p_out;
744 vlc_mutex_init( &p_ts->lock );
745 vlc_cond_init( &p_ts->wait );
746 p_ts->b_paused = p_sys->b_input_paused && !p_sys->b_input_paused_source;
747 p_ts->i_pause_date = p_ts->b_paused ? mdate() : -1;
748 p_ts->i_rate_source = p_sys->i_input_rate_source;
749 p_ts->i_rate = p_sys->i_input_rate;
750 p_ts->i_rate_date = -1;
751 p_ts->i_rate_delay = 0;
752 p_ts->i_buffering_delay = 0;
753 p_ts->i_cmd_delay = 0;
754 p_ts->p_storage_r = NULL;
755 p_ts->p_storage_w = NULL;
757 vlc_object_set_destructor( p_ts, TsDestructor );
759 p_sys->b_delayed = true;
760 if( vlc_thread_create( p_ts, "es out timeshift",
761 TsRun, VLC_THREAD_PRIORITY_INPUT ) )
763 msg_Err( p_sys->p_input, "cannot create input thread" );
765 vlc_object_release( p_ts );
767 p_sys->b_delayed = false;
773 static void TsAutoStop( es_out_t *p_out )
775 es_out_sys_t *p_sys = p_out->p_sys;
777 if( !p_sys->b_delayed || !TsIsUnused( p_sys->p_thread ) )
780 msg_Warn( p_sys->p_input, "es out timeshift: auto stop" );
781 TsStop( p_sys->p_thread );
783 p_sys->b_delayed = false;
785 static void TsStop( ts_thread_t *p_ts )
787 vlc_object_kill( p_ts );
788 vlc_thread_join( p_ts );
790 vlc_mutex_lock( &p_ts->lock );
795 if( TsPopCmdLocked( p_ts, &cmd, true ) )
800 assert( !p_ts->p_storage_r || !p_ts->p_storage_r->p_next );
801 if( p_ts->p_storage_r )
802 TsStorageDelete( p_ts->p_storage_r );
803 vlc_mutex_unlock( &p_ts->lock );
805 vlc_object_release( p_ts );
807 static void TsPushCmd( ts_thread_t *p_ts, ts_cmd_t *p_cmd )
809 vlc_mutex_lock( &p_ts->lock );
811 if( !p_ts->p_storage_w || TsStorageIsFull( p_ts->p_storage_w, p_cmd ) )
813 ts_storage_t *p_storage = TsStorageNew( p_ts->psz_tmp_path, p_ts->i_tmp_size_max );
818 vlc_mutex_unlock( &p_ts->lock );
819 /* TODO warn the user (but only once) */
823 if( !p_ts->p_storage_w )
825 p_ts->p_storage_r = p_ts->p_storage_w = p_storage;
829 TsStoragePack( p_ts->p_storage_w );
830 p_ts->p_storage_w->p_next = p_storage;
831 p_ts->p_storage_w = p_storage;
835 /* TODO return error and warn the user (but only once) */
836 TsStoragePushCmd( p_ts->p_storage_w, p_cmd, p_ts->p_storage_r == p_ts->p_storage_w );
838 vlc_cond_signal( &p_ts->wait );
840 vlc_mutex_unlock( &p_ts->lock );
842 static int TsPopCmdLocked( ts_thread_t *p_ts, ts_cmd_t *p_cmd, bool b_flush )
844 vlc_assert_locked( &p_ts->lock );
846 if( TsStorageIsEmpty( p_ts->p_storage_r ) )
849 TsStoragePopCmd( p_ts->p_storage_r, p_cmd, b_flush );
851 while( p_ts->p_storage_r && TsStorageIsEmpty( p_ts->p_storage_r ) )
853 ts_storage_t *p_next = p_ts->p_storage_r->p_next;
857 TsStorageDelete( p_ts->p_storage_r );
858 p_ts->p_storage_r = p_next;
863 static bool TsHasCmd( ts_thread_t *p_ts )
867 vlc_mutex_lock( &p_ts->lock );
868 b_cmd = TsStorageIsEmpty( p_ts->p_storage_r );
869 vlc_mutex_unlock( &p_ts->lock );
873 static bool TsIsUnused( ts_thread_t *p_ts )
877 vlc_mutex_lock( &p_ts->lock );
878 b_unused = !p_ts->b_paused &&
879 p_ts->i_rate == p_ts->i_rate_source &&
880 TsStorageIsEmpty( p_ts->p_storage_r );
881 vlc_mutex_unlock( &p_ts->lock );
885 static int TsChangePause( ts_thread_t *p_ts, bool b_source_paused, bool b_paused, mtime_t i_date )
887 vlc_mutex_lock( &p_ts->lock );
892 assert( !b_source_paused );
893 i_ret = es_out_SetPauseState( p_ts->p_out, true, true, i_date );
897 i_ret = es_out_SetPauseState( p_ts->p_out, false, false, i_date );
904 assert( p_ts->i_pause_date > 0 );
906 p_ts->i_cmd_delay += i_date - p_ts->i_pause_date;
909 p_ts->b_paused = b_paused;
910 p_ts->i_pause_date = i_date;
912 vlc_cond_signal( &p_ts->wait );
914 vlc_mutex_unlock( &p_ts->lock );
917 static int TsChangeRate( ts_thread_t *p_ts, int i_src_rate, int i_rate )
921 vlc_mutex_lock( &p_ts->lock );
922 p_ts->i_cmd_delay += p_ts->i_rate_delay;
924 p_ts->i_rate_date = -1;
925 p_ts->i_rate_delay = 0;
926 p_ts->i_rate = i_rate;
927 p_ts->i_rate_source = i_src_rate;
929 i_ret = es_out_SetRate( p_ts->p_out, i_rate, i_rate );
930 vlc_mutex_unlock( &p_ts->lock );
935 static void *TsRun( vlc_object_t *p_thread )
937 ts_thread_t *p_ts = (ts_thread_t*)p_thread;
938 mtime_t i_buffering_date = -1;
946 /* Pop a command to execute */
947 vlc_mutex_lock( &p_ts->lock );
948 mutex_cleanup_push( &p_ts->lock );
952 const int canc = vlc_savecancel();
953 b_buffering = es_out_GetBuffering( p_ts->p_out );
955 if( ( !p_ts->b_paused || b_buffering ) && !TsPopCmdLocked( p_ts, &cmd, false ) )
957 vlc_restorecancel( canc );
960 vlc_restorecancel( canc );
962 vlc_cond_wait( &p_ts->wait, &p_ts->lock );
965 if( b_buffering && i_buffering_date < 0 )
967 i_buffering_date = cmd.i_date;
969 else if( i_buffering_date > 0 )
971 p_ts->i_buffering_delay += i_buffering_date - cmd.i_date; /* It is < 0 */
973 i_buffering_date = cmd.i_date;
975 i_buffering_date = -1;
978 if( p_ts->i_rate_date < 0 )
979 p_ts->i_rate_date = cmd.i_date;
981 p_ts->i_rate_delay = 0;
982 if( p_ts->i_rate_source != p_ts->i_rate )
984 const mtime_t i_duration = cmd.i_date - p_ts->i_rate_date;
985 p_ts->i_rate_delay = i_duration * p_ts->i_rate / p_ts->i_rate_source - i_duration;
987 if( p_ts->i_cmd_delay + p_ts->i_rate_delay + p_ts->i_buffering_delay < 0 && p_ts->i_rate != p_ts->i_rate_source )
989 const int canc = vlc_savecancel();
991 /* Auto reset to rate 1.0 */
992 msg_Warn( p_ts->p_input, "es out timeshift: auto reset rate to %d", p_ts->i_rate_source );
994 p_ts->i_cmd_delay = 0;
995 p_ts->i_buffering_delay = 0;
997 p_ts->i_rate_delay = 0;
998 p_ts->i_rate_date = -1;
999 p_ts->i_rate = p_ts->i_rate_source;
1001 if( !es_out_SetRate( p_ts->p_out, p_ts->i_rate_source, p_ts->i_rate ) )
1003 vlc_value_t val = { .i_int = p_ts->i_rate };
1005 * FIXME it is perfectly safe BUT it is ugly as it may hide a
1006 * rate change requested by user */
1007 input_ControlPush( p_ts->p_input, INPUT_CONTROL_SET_RATE, &val );
1010 vlc_restorecancel( canc );
1012 i_deadline = cmd.i_date + p_ts->i_cmd_delay + p_ts->i_rate_delay + p_ts->i_buffering_delay;
1016 /* Regulate the speed of command processing to the same one than
1018 vlc_cleanup_push( cmd_cleanup_routine, &cmd );
1020 mwait( i_deadline );
1024 /* Execute the command */
1025 const int canc = vlc_savecancel();
1026 switch( cmd.i_type )
1029 CmdExecuteAdd( p_ts->p_out, &cmd );
1030 CmdCleanAdd( &cmd );
1033 CmdExecuteSend( p_ts->p_out, &cmd );
1034 CmdCleanSend( &cmd );
1037 CmdExecuteControl( p_ts->p_out, &cmd );
1038 CmdCleanControl( &cmd );
1041 CmdExecuteDel( p_ts->p_out, &cmd );
1047 vlc_restorecancel( canc );
1053 /*****************************************************************************
1055 *****************************************************************************/
1056 static ts_storage_t *TsStorageNew( const char *psz_tmp_path, int64_t i_tmp_size_max )
1058 ts_storage_t *p_storage = calloc( 1, sizeof(ts_storage_t) );
1063 p_storage->p_next = NULL;
1066 p_storage->i_file_max = i_tmp_size_max;
1067 p_storage->i_file_size = 0;
1068 p_storage->p_filew = GetTmpFile( &p_storage->psz_file, psz_tmp_path );
1069 if( p_storage->psz_file )
1070 p_storage->p_filer = utf8_fopen( p_storage->psz_file, "rb" );
1073 p_storage->i_cmd_w = 0;
1074 p_storage->i_cmd_r = 0;
1075 p_storage->i_cmd_max = 30000;
1076 p_storage->p_cmd = malloc( p_storage->i_cmd_max * sizeof(*p_storage->p_cmd) );
1077 //fprintf( stderr, "\nSTORAGE name=%s size=%d kbytes\n", p_storage->psz_file, p_storage->i_cmd_max * sizeof(*p_storage->p_cmd) /1024 );
1079 if( !p_storage->p_cmd || !p_storage->p_filew || !p_storage->p_filer )
1081 TsStorageDelete( p_storage );
1086 static void TsStorageDelete( ts_storage_t *p_storage )
1088 while( p_storage->i_cmd_r < p_storage->i_cmd_w )
1092 TsStoragePopCmd( p_storage, &cmd, true );
1096 free( p_storage->p_cmd );
1098 if( p_storage->p_filer )
1099 fclose( p_storage->p_filer );
1100 if( p_storage->p_filew )
1101 fclose( p_storage->p_filew );
1103 if( p_storage->psz_file )
1105 utf8_unlink( p_storage->psz_file );
1106 free( p_storage->psz_file );
1111 static void TsStoragePack( ts_storage_t *p_storage )
1113 /* Try to release a bit of memory */
1114 if( p_storage->i_cmd_w >= p_storage->i_cmd_max )
1117 p_storage->i_cmd_max = __MAX( p_storage->i_cmd_w, 1 );
1119 ts_cmd_t *p_new = realloc( p_storage->p_cmd, p_storage->i_cmd_max * sizeof(*p_storage->p_cmd) );
1121 p_storage->p_cmd = p_new;
1123 static bool TsStorageIsFull( ts_storage_t *p_storage, const ts_cmd_t *p_cmd )
1125 if( p_cmd && p_cmd->i_type == C_SEND && p_storage->i_cmd_w > 0 )
1127 size_t i_size = sizeof(*p_cmd->u.send.p_block) + p_cmd->u.send.p_block->i_buffer;
1129 if( p_storage->i_file_size + i_size >= p_storage->i_file_max )
1132 return p_storage->i_cmd_w >= p_storage->i_cmd_max;
1134 static bool TsStorageIsEmpty( ts_storage_t *p_storage )
1136 return !p_storage || p_storage->i_cmd_r >= p_storage->i_cmd_w;
1138 static void TsStoragePushCmd( ts_storage_t *p_storage, const ts_cmd_t *p_cmd, bool b_flush )
1140 ts_cmd_t cmd = *p_cmd;
1142 assert( !TsStorageIsFull( p_storage, p_cmd ) );
1144 if( cmd.i_type == C_SEND )
1146 block_t *p_block = cmd.u.send.p_block;
1148 cmd.u.send.p_block = NULL;
1149 cmd.u.send.i_offset = ftell( p_storage->p_filew );
1151 if( fwrite( p_block, sizeof(*p_block), 1, p_storage->p_filew ) != 1 )
1153 block_Release( p_block );
1156 p_storage->i_file_size += sizeof(*p_block);
1157 if( p_block->i_buffer > 0 )
1159 if( fwrite( p_block->p_buffer, p_block->i_buffer, 1, p_storage->p_filew ) != 1 )
1161 block_Release( p_block );
1165 p_storage->i_file_size += p_block->i_buffer;
1166 block_Release( p_block );
1169 fflush( p_storage->p_filew );
1171 p_storage->p_cmd[p_storage->i_cmd_w++] = cmd;
1173 static void TsStoragePopCmd( ts_storage_t *p_storage, ts_cmd_t *p_cmd, bool b_flush )
1175 assert( !TsStorageIsEmpty( p_storage ) );
1177 *p_cmd = p_storage->p_cmd[p_storage->i_cmd_r++];
1178 if( p_cmd->i_type == C_SEND )
1183 !fseek( p_storage->p_filer, p_cmd->u.send.i_offset, SEEK_SET ) &&
1184 fread( &block, sizeof(block), 1, p_storage->p_filer ) == 1 )
1186 block_t *p_block = block_Alloc( block.i_buffer );
1189 p_block->i_dts = block.i_dts;
1190 p_block->i_pts = block.i_pts;
1191 p_block->i_flags = block.i_flags;
1192 p_block->i_length = block.i_length;
1193 p_block->i_rate = block.i_rate;
1194 p_block->i_nb_samples = block.i_nb_samples;
1195 p_block->i_buffer = fread( p_block->p_buffer, 1, block.i_buffer, p_storage->p_filer );
1197 p_cmd->u.send.p_block = p_block;
1201 //fprintf( stderr, "TsStoragePopCmd: %m\n" );
1202 p_cmd->u.send.p_block = block_Alloc( 1 );
1207 /*****************************************************************************
1209 *****************************************************************************/
1210 static void CmdClean( ts_cmd_t *p_cmd )
1212 switch( p_cmd->i_type )
1215 CmdCleanAdd( p_cmd );
1218 CmdCleanSend( p_cmd );
1221 CmdCleanControl( p_cmd );
1231 static int CmdInitAdd( ts_cmd_t *p_cmd, es_out_id_t *p_es, const es_format_t *p_fmt, bool b_copy )
1233 p_cmd->i_type = C_ADD;
1234 p_cmd->i_date = mdate();
1235 p_cmd->u.add.p_es = p_es;
1238 p_cmd->u.add.p_fmt = malloc( sizeof(*p_fmt) );
1239 if( !p_cmd->u.add.p_fmt )
1240 return VLC_EGENERIC;
1241 es_format_Copy( p_cmd->u.add.p_fmt, p_fmt );
1245 p_cmd->u.add.p_fmt = (es_format_t*)p_fmt;
1249 static void CmdExecuteAdd( es_out_t *p_out, ts_cmd_t *p_cmd )
1251 p_cmd->u.add.p_es->p_es = es_out_Add( p_out, p_cmd->u.add.p_fmt );
1253 static void CmdCleanAdd( ts_cmd_t *p_cmd )
1255 es_format_Clean( p_cmd->u.add.p_fmt );
1256 free( p_cmd->u.add.p_fmt );
1259 static void CmdInitSend( ts_cmd_t *p_cmd, es_out_id_t *p_es, block_t *p_block )
1261 p_cmd->i_type = C_SEND;
1262 p_cmd->i_date = mdate();
1263 p_cmd->u.send.p_es = p_es;
1264 p_cmd->u.send.p_block = p_block;
1266 static int CmdExecuteSend( es_out_t *p_out, ts_cmd_t *p_cmd )
1268 block_t *p_block = p_cmd->u.send.p_block;
1270 p_cmd->u.send.p_block = NULL;
1274 if( p_cmd->u.send.p_es->p_es )
1275 return es_out_Send( p_out, p_cmd->u.send.p_es->p_es, p_block );
1276 block_Release( p_block );
1278 return VLC_EGENERIC;
1280 static void CmdCleanSend( ts_cmd_t *p_cmd )
1282 if( p_cmd->u.send.p_block )
1283 block_Release( p_cmd->u.send.p_block );
1286 static int CmdInitDel( ts_cmd_t *p_cmd, es_out_id_t *p_es )
1288 p_cmd->i_type = C_DEL;
1289 p_cmd->i_date = mdate();
1290 p_cmd->u.del.p_es = p_es;
1293 static void CmdExecuteDel( es_out_t *p_out, ts_cmd_t *p_cmd )
1295 if( p_cmd->u.del.p_es->p_es )
1296 es_out_Del( p_out, p_cmd->u.del.p_es->p_es );
1297 free( p_cmd->u.del.p_es );
1300 static int CmdInitControl( ts_cmd_t *p_cmd, int i_query, va_list args, bool b_copy )
1302 p_cmd->i_type = C_CONTROL;
1303 p_cmd->i_date = mdate();
1304 p_cmd->u.control.i_query = i_query;
1308 /* Pass-through control */
1309 case ES_OUT_SET_MODE: /* arg1= int */
1310 case ES_OUT_SET_GROUP: /* arg1= int */
1311 case ES_OUT_DEL_GROUP: /* arg1=int i_group */
1312 p_cmd->u.control.u.i_int = (int)va_arg( args, int );
1315 case ES_OUT_SET_PCR: /* arg1=int64_t i_pcr(microsecond!) (using default group 0)*/
1316 case ES_OUT_SET_NEXT_DISPLAY_TIME: /* arg1=int64_t i_pts(microsecond) */
1317 p_cmd->u.control.u.i_i64 = (int64_t)va_arg( args, int64_t );
1320 case ES_OUT_SET_GROUP_PCR: /* arg1= int i_group, arg2=int64_t i_pcr(microsecond!)*/
1321 p_cmd->u.control.u.int_i64.i_int = (int)va_arg( args, int );
1322 p_cmd->u.control.u.int_i64.i_i64 = (int64_t)va_arg( args, int64_t );
1325 case ES_OUT_SET_ES_SCRAMBLED_STATE:
1326 p_cmd->u.control.u.es_bool.p_es = (es_out_id_t*)va_arg( args, es_out_id_t * );
1327 p_cmd->u.control.u.es_bool.b_bool = (bool)va_arg( args, int );
1330 case ES_OUT_RESET_PCR: /* no arg */
1333 case ES_OUT_SET_META: /* arg1=const vlc_meta_t* */
1334 case ES_OUT_SET_GROUP_META: /* arg1=int i_group arg2=const vlc_meta_t* */
1336 if( i_query == ES_OUT_SET_GROUP_META )
1337 p_cmd->u.control.u.int_meta.i_int = (int)va_arg( args, int );
1338 const vlc_meta_t *p_meta = va_arg( args, const vlc_meta_t * );
1342 p_cmd->u.control.u.int_meta.p_meta = vlc_meta_New();
1343 if( !p_cmd->u.control.u.int_meta.p_meta )
1344 return VLC_EGENERIC;
1345 vlc_meta_Merge( p_cmd->u.control.u.int_meta.p_meta, p_meta );
1349 /* The cast is only needed to avoid warning */
1350 p_cmd->u.control.u.int_meta.p_meta = (vlc_meta_t*)p_meta;
1355 case ES_OUT_SET_GROUP_EPG: /* arg1=int i_group arg2=const vlc_epg_t* */
1357 p_cmd->u.control.u.int_epg.i_int = (int)va_arg( args, int );
1358 const vlc_epg_t *p_epg = va_arg( args, const vlc_epg_t * );
1362 p_cmd->u.control.u.int_epg.p_epg = vlc_epg_New( p_epg->psz_name );
1363 if( !p_cmd->u.control.u.int_epg.p_epg )
1364 return VLC_EGENERIC;
1365 for( int i = 0; i < p_epg->i_event; i++ )
1367 vlc_epg_event_t *p_evt = p_epg->pp_event[i];
1369 vlc_epg_AddEvent( p_cmd->u.control.u.int_epg.p_epg,
1370 p_evt->i_start, p_evt->i_duration,
1372 p_evt->psz_short_description, p_evt->psz_description );
1374 vlc_epg_SetCurrent( p_cmd->u.control.u.int_epg.p_epg,
1375 p_epg->p_current ? p_epg->p_current->i_start : -1 );
1379 /* The cast is only needed to avoid warning */
1380 p_cmd->u.control.u.int_epg.p_epg = (vlc_epg_t*)p_epg;
1385 /* Modified control */
1386 case ES_OUT_SET_ES: /* arg1= es_out_id_t* */
1387 case ES_OUT_RESTART_ES: /* arg1= es_out_id_t* */
1388 case ES_OUT_SET_ES_DEFAULT: /* arg1= es_out_id_t* */
1389 p_cmd->u.control.u.p_es = (es_out_id_t*)va_arg( args, es_out_id_t * );
1392 case ES_OUT_SET_ES_STATE:/* arg1= es_out_id_t* arg2=bool */
1393 p_cmd->u.control.u.es_bool.p_es = (es_out_id_t*)va_arg( args, es_out_id_t * );
1394 p_cmd->u.control.u.es_bool.b_bool = (bool)va_arg( args, int );
1397 case ES_OUT_SET_ES_FMT: /* arg1= es_out_id_t* arg2=es_format_t* */
1399 p_cmd->u.control.u.es_fmt.p_es = (es_out_id_t*)va_arg( args, es_out_id_t * );
1400 es_format_t *p_fmt = (es_format_t*)va_arg( args, es_format_t * );
1404 p_cmd->u.control.u.es_fmt.p_fmt = malloc( sizeof(*p_fmt) );
1405 if( !p_cmd->u.control.u.es_fmt.p_fmt )
1406 return VLC_EGENERIC;
1407 es_format_Copy( p_cmd->u.control.u.es_fmt.p_fmt, p_fmt );
1411 p_cmd->u.control.u.es_fmt.p_fmt = p_fmt;
1415 case ES_OUT_SET_TIMES:
1417 double f_position = (double)va_arg( args, double );
1418 mtime_t i_time = (mtime_t)va_arg( args, mtime_t );
1419 mtime_t i_length = (mtime_t)va_arg( args, mtime_t );
1421 p_cmd->u.control.u.times.f_position = f_position;
1422 p_cmd->u.control.u.times.i_time = i_time;
1423 p_cmd->u.control.u.times.i_length = i_length;
1426 case ES_OUT_SET_JITTER:
1428 mtime_t i_pts_delay = (mtime_t)va_arg( args, mtime_t );
1429 int i_cr_average = (int)va_arg( args, int );
1431 p_cmd->u.control.u.jitter.i_pts_delay = i_pts_delay;
1432 p_cmd->u.control.u.jitter.i_cr_average = i_cr_average;
1438 return VLC_EGENERIC;
1443 static int CmdExecuteControl( es_out_t *p_out, ts_cmd_t *p_cmd )
1445 const int i_query = p_cmd->u.control.i_query;
1449 /* Pass-through control */
1450 case ES_OUT_SET_MODE: /* arg1= int */
1451 case ES_OUT_SET_GROUP: /* arg1= int */
1452 case ES_OUT_DEL_GROUP: /* arg1=int i_group */
1453 return es_out_Control( p_out, i_query, p_cmd->u.control.u.i_int );
1455 case ES_OUT_SET_PCR: /* arg1=int64_t i_pcr(microsecond!) (using default group 0)*/
1456 case ES_OUT_SET_NEXT_DISPLAY_TIME: /* arg1=int64_t i_pts(microsecond) */
1457 return es_out_Control( p_out, i_query, p_cmd->u.control.u.i_i64 );
1459 case ES_OUT_SET_GROUP_PCR: /* arg1= int i_group, arg2=int64_t i_pcr(microsecond!)*/
1460 return es_out_Control( p_out, i_query, p_cmd->u.control.u.int_i64.i_int,
1461 p_cmd->u.control.u.int_i64.i_i64 );
1463 case ES_OUT_RESET_PCR: /* no arg */
1464 return es_out_Control( p_out, i_query );
1466 case ES_OUT_SET_GROUP_META: /* arg1=int i_group arg2=const vlc_meta_t* */
1467 return es_out_Control( p_out, i_query, p_cmd->u.control.u.int_meta.i_int,
1468 p_cmd->u.control.u.int_meta.p_meta );
1470 case ES_OUT_SET_GROUP_EPG: /* arg1=int i_group arg2=const vlc_epg_t* */
1471 return es_out_Control( p_out, i_query, p_cmd->u.control.u.int_epg.i_int,
1472 p_cmd->u.control.u.int_epg.p_epg );
1474 case ES_OUT_SET_ES_SCRAMBLED_STATE: /* arg1=int es_out_id_t* arg2=bool */
1475 return es_out_Control( p_out, i_query, p_cmd->u.control.u.es_bool.p_es->p_es,
1476 p_cmd->u.control.u.es_bool.b_bool );
1478 case ES_OUT_SET_META: /* arg1=const vlc_meta_t* */
1479 return es_out_Control( p_out, i_query, p_cmd->u.control.u.int_meta.p_meta );
1481 /* Modified control */
1482 case ES_OUT_SET_ES: /* arg1= es_out_id_t* */
1483 case ES_OUT_RESTART_ES: /* arg1= es_out_id_t* */
1484 case ES_OUT_SET_ES_DEFAULT: /* arg1= es_out_id_t* */
1485 return es_out_Control( p_out, i_query, p_cmd->u.control.u.p_es->p_es );
1487 case ES_OUT_SET_ES_STATE:/* arg1= es_out_id_t* arg2=bool */
1488 return es_out_Control( p_out, i_query, p_cmd->u.control.u.es_bool.p_es->p_es,
1489 p_cmd->u.control.u.es_bool.b_bool );
1491 case ES_OUT_SET_ES_FMT: /* arg1= es_out_id_t* arg2=es_format_t* */
1492 return es_out_Control( p_out, i_query, p_cmd->u.control.u.es_fmt.p_es->p_es,
1493 p_cmd->u.control.u.es_fmt.p_fmt );
1495 case ES_OUT_SET_TIMES:
1496 return es_out_Control( p_out, i_query, p_cmd->u.control.u.times.f_position,
1497 p_cmd->u.control.u.times.i_time,
1498 p_cmd->u.control.u.times.i_length );
1499 case ES_OUT_SET_JITTER:
1500 return es_out_Control( p_out, i_query, p_cmd->u.control.u.jitter.i_pts_delay,
1501 p_cmd->u.control.u.jitter.i_cr_average );
1505 return VLC_EGENERIC;
1508 static void CmdCleanControl( ts_cmd_t *p_cmd )
1510 if( ( p_cmd->u.control.i_query == ES_OUT_SET_GROUP_META ||
1511 p_cmd->u.control.i_query == ES_OUT_SET_META ) &&
1512 p_cmd->u.control.u.int_meta.p_meta )
1514 vlc_meta_Delete( p_cmd->u.control.u.int_meta.p_meta );
1516 else if( p_cmd->u.control.i_query == ES_OUT_SET_GROUP_EPG &&
1517 p_cmd->u.control.u.int_epg.p_epg )
1519 vlc_epg_Delete( p_cmd->u.control.u.int_epg.p_epg );
1521 else if( p_cmd->u.control.i_query == ES_OUT_SET_ES_FMT &&
1522 p_cmd->u.control.u.es_fmt.p_fmt )
1524 es_format_Clean( p_cmd->u.control.u.es_fmt.p_fmt );
1525 free( p_cmd->u.control.u.es_fmt.p_fmt );
1530 /*****************************************************************************
1532 *****************************************************************************/
1533 static char *GetTmpPath( char *psz_path )
1535 if( psz_path && *psz_path )
1537 /* Make sure that the path exists and is a directory */
1539 const int i_ret = utf8_stat( psz_path, &s );
1541 if( i_ret < 0 && !utf8_mkdir( psz_path, 0600 ) )
1543 else if( i_ret == 0 && ( s.st_mode & S_IFDIR ) )
1548 /* Create a suitable path */
1549 #if defined (WIN32) && !defined (UNDER_CE)
1550 const DWORD dwCount = GetTempPathW( 0, NULL );
1551 wchar_t *psw_path = calloc( dwCount + 1, sizeof(wchar_t) );
1554 if( GetTempPathW( dwCount + 1, psw_path ) <= 0 )
1558 psw_path = _wgetcwd( NULL, 0 );
1565 psz_path = FromWide( psw_path );
1566 while( psz_path && *psz_path && psz_path[strlen( psz_path ) - 1] == '\\' )
1567 psz_path[strlen( psz_path ) - 1] = '\0';
1572 if( !psz_path || *psz_path == '\0' )
1575 return strdup( "C:" );
1578 psz_path = strdup( "/tmp" );
1584 static FILE *GetTmpFile( char **ppsz_file, const char *psz_path )
1592 if( asprintf( &psz_name, "%s/vlc-timeshift.XXXXXX", psz_path ) < 0 )
1596 fd = utf8_mkstemp( psz_name );
1597 *ppsz_file = psz_name;
1603 f = fdopen( fd, "w+b" );