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 it
10 * under the terms of the GNU Lesser General Public License as published by
11 * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public License
20 * along with this program; if not, write to the Free Software Foundation,
21 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
42 #include <vlc_common.h>
45 # include <vlc_charset.h>
47 #include <vlc_input.h>
48 #include <vlc_es_out.h>
49 #include <vlc_block.h>
50 #include "input_internal.h"
52 #include "es_out_timeshift.h"
54 /*****************************************************************************
56 *****************************************************************************/
58 /* XXX attribute_packed is (and MUST be) used ONLY to reduce memory usage */
59 #ifdef HAVE_ATTRIBUTE_PACKED
60 # define attribute_packed __attribute__((__packed__))
62 # define attribute_packed
73 typedef struct attribute_packed
79 typedef struct attribute_packed
84 typedef struct attribute_packed
88 int i_offset; /* We do not use file > INT_MAX */
91 typedef struct attribute_packed
128 /* FIXME Really too big (double make the whole thing too big) */
136 mtime_t i_pts_jitter;
142 typedef struct attribute_packed
151 ts_cmd_control_t control;
155 typedef struct ts_storage_t ts_storage_t;
158 ts_storage_t *p_next;
161 char *psz_file; /* Filename */
162 size_t i_file_max; /* Max size in bytes */
163 int64_t i_file_size;/* Current size in bytes */
164 FILE *p_filew; /* FILE handle for data writing */
165 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 */
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( void * );
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;
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 );
335 char *psz_tmp_path = var_CreateGetNonEmptyString( p_input, "input-timeshift-path" );
336 p_sys->psz_tmp_path = GetTmpPath( psz_tmp_path );
338 msg_Dbg( p_input, "using timeshift granularity of %d MiB, in path '%s'",
339 (int)p_sys->i_tmp_size_max/(1024*1024), 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_ts );
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_ts, &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_ts, &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_ts, &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_ts ) )
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_ts, 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 pace 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_ts, 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 pace 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:
613 if( CmdInitControl( &cmd, i_query, args, p_sys->b_delayed ) )
615 if( p_sys->b_delayed )
617 TsPushCmd( p_sys->p_ts, &cmd );
620 return CmdExecuteControl( p_sys->p_out, &cmd );
623 /* Special control when delayed */
624 case ES_OUT_GET_ES_STATE:
626 es_out_id_t *p_es = (es_out_id_t*)va_arg( args, es_out_id_t * );
627 bool *pb_enabled = (bool*)va_arg( args, bool* );
629 if( p_sys->b_delayed )
634 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 );
696 case ES_OUT_GET_GROUP_FORCED:
698 int *pi_group = va_arg( args, int * );
699 return es_out_Control( p_sys->p_out, ES_OUT_GET_GROUP_FORCED, pi_group );
704 msg_Err( p_sys->p_input, "Unknown es_out_Control query !" );
709 static int Control( es_out_t *p_out, int i_query, va_list args )
711 es_out_sys_t *p_sys = p_out->p_sys;
714 vlc_mutex_lock( &p_sys->lock );
718 i_ret = ControlLocked( p_out, i_query, args );
720 vlc_mutex_unlock( &p_sys->lock );
725 /*****************************************************************************
727 *****************************************************************************/
728 static void TsDestroy( ts_thread_t *p_ts )
730 vlc_cond_destroy( &p_ts->wait );
731 vlc_mutex_destroy( &p_ts->lock );
734 static int TsStart( es_out_t *p_out )
736 es_out_sys_t *p_sys = p_out->p_sys;
739 assert( !p_sys->b_delayed );
741 p_sys->p_ts = p_ts = calloc(1, sizeof(*p_ts));
745 p_ts->i_tmp_size_max = p_sys->i_tmp_size_max;
746 p_ts->psz_tmp_path = p_sys->psz_tmp_path;
747 p_ts->p_input = p_sys->p_input;
748 p_ts->p_out = p_sys->p_out;
749 vlc_mutex_init( &p_ts->lock );
750 vlc_cond_init( &p_ts->wait );
751 p_ts->b_paused = p_sys->b_input_paused && !p_sys->b_input_paused_source;
752 p_ts->i_pause_date = p_ts->b_paused ? mdate() : -1;
753 p_ts->i_rate_source = p_sys->i_input_rate_source;
754 p_ts->i_rate = p_sys->i_input_rate;
755 p_ts->i_rate_date = -1;
756 p_ts->i_rate_delay = 0;
757 p_ts->i_buffering_delay = 0;
758 p_ts->i_cmd_delay = 0;
759 p_ts->p_storage_r = NULL;
760 p_ts->p_storage_w = NULL;
762 p_sys->b_delayed = true;
763 if( vlc_clone( &p_ts->thread, TsRun, p_ts, VLC_THREAD_PRIORITY_INPUT ) )
765 msg_Err( p_sys->p_input, "cannot create timeshift thread" );
769 p_sys->b_delayed = false;
775 static void TsAutoStop( es_out_t *p_out )
777 es_out_sys_t *p_sys = p_out->p_sys;
779 if( !p_sys->b_delayed || !TsIsUnused( p_sys->p_ts ) )
782 msg_Warn( p_sys->p_input, "es out timeshift: auto stop" );
783 TsStop( p_sys->p_ts );
785 p_sys->b_delayed = false;
787 static void TsStop( ts_thread_t *p_ts )
789 vlc_cancel( p_ts->thread );
790 vlc_join( p_ts->thread, NULL );
792 vlc_mutex_lock( &p_ts->lock );
797 if( TsPopCmdLocked( p_ts, &cmd, true ) )
802 assert( !p_ts->p_storage_r || !p_ts->p_storage_r->p_next );
803 if( p_ts->p_storage_r )
804 TsStorageDelete( p_ts->p_storage_r );
805 vlc_mutex_unlock( &p_ts->lock );
809 static void TsPushCmd( ts_thread_t *p_ts, ts_cmd_t *p_cmd )
811 vlc_mutex_lock( &p_ts->lock );
813 if( !p_ts->p_storage_w || TsStorageIsFull( p_ts->p_storage_w, p_cmd ) )
815 ts_storage_t *p_storage = TsStorageNew( p_ts->psz_tmp_path, p_ts->i_tmp_size_max );
820 vlc_mutex_unlock( &p_ts->lock );
821 /* TODO warn the user (but only once) */
825 if( !p_ts->p_storage_w )
827 p_ts->p_storage_r = p_ts->p_storage_w = p_storage;
831 TsStoragePack( p_ts->p_storage_w );
832 p_ts->p_storage_w->p_next = p_storage;
833 p_ts->p_storage_w = p_storage;
837 /* TODO return error and warn the user (but only once) */
838 TsStoragePushCmd( p_ts->p_storage_w, p_cmd, p_ts->p_storage_r == p_ts->p_storage_w );
840 vlc_cond_signal( &p_ts->wait );
842 vlc_mutex_unlock( &p_ts->lock );
844 static int TsPopCmdLocked( ts_thread_t *p_ts, ts_cmd_t *p_cmd, bool b_flush )
846 vlc_assert_locked( &p_ts->lock );
848 if( TsStorageIsEmpty( p_ts->p_storage_r ) )
851 TsStoragePopCmd( p_ts->p_storage_r, p_cmd, b_flush );
853 while( p_ts->p_storage_r && TsStorageIsEmpty( p_ts->p_storage_r ) )
855 ts_storage_t *p_next = p_ts->p_storage_r->p_next;
859 TsStorageDelete( p_ts->p_storage_r );
860 p_ts->p_storage_r = p_next;
865 static bool TsHasCmd( ts_thread_t *p_ts )
869 vlc_mutex_lock( &p_ts->lock );
870 b_cmd = TsStorageIsEmpty( p_ts->p_storage_r );
871 vlc_mutex_unlock( &p_ts->lock );
875 static bool TsIsUnused( ts_thread_t *p_ts )
879 vlc_mutex_lock( &p_ts->lock );
880 b_unused = !p_ts->b_paused &&
881 p_ts->i_rate == p_ts->i_rate_source &&
882 TsStorageIsEmpty( p_ts->p_storage_r );
883 vlc_mutex_unlock( &p_ts->lock );
887 static int TsChangePause( ts_thread_t *p_ts, bool b_source_paused, bool b_paused, mtime_t i_date )
889 vlc_mutex_lock( &p_ts->lock );
894 assert( !b_source_paused );
895 i_ret = es_out_SetPauseState( p_ts->p_out, true, true, i_date );
899 i_ret = es_out_SetPauseState( p_ts->p_out, false, false, i_date );
906 assert( p_ts->i_pause_date > 0 );
908 p_ts->i_cmd_delay += i_date - p_ts->i_pause_date;
911 p_ts->b_paused = b_paused;
912 p_ts->i_pause_date = i_date;
914 vlc_cond_signal( &p_ts->wait );
916 vlc_mutex_unlock( &p_ts->lock );
919 static int TsChangeRate( ts_thread_t *p_ts, int i_src_rate, int i_rate )
923 vlc_mutex_lock( &p_ts->lock );
924 p_ts->i_cmd_delay += p_ts->i_rate_delay;
926 p_ts->i_rate_date = -1;
927 p_ts->i_rate_delay = 0;
928 p_ts->i_rate = i_rate;
929 p_ts->i_rate_source = i_src_rate;
931 i_ret = es_out_SetRate( p_ts->p_out, i_rate, i_rate );
932 vlc_mutex_unlock( &p_ts->lock );
937 static void *TsRun( void *p_data )
939 ts_thread_t *p_ts = p_data;
940 mtime_t i_buffering_date = -1;
948 /* Pop a command to execute */
949 vlc_mutex_lock( &p_ts->lock );
950 mutex_cleanup_push( &p_ts->lock );
954 const int canc = vlc_savecancel();
955 b_buffering = es_out_GetBuffering( p_ts->p_out );
957 if( ( !p_ts->b_paused || b_buffering ) && !TsPopCmdLocked( p_ts, &cmd, false ) )
959 vlc_restorecancel( canc );
962 vlc_restorecancel( canc );
964 vlc_cond_wait( &p_ts->wait, &p_ts->lock );
967 if( b_buffering && i_buffering_date < 0 )
969 i_buffering_date = cmd.i_date;
971 else if( i_buffering_date > 0 )
973 p_ts->i_buffering_delay += i_buffering_date - cmd.i_date; /* It is < 0 */
975 i_buffering_date = cmd.i_date;
977 i_buffering_date = -1;
980 if( p_ts->i_rate_date < 0 )
981 p_ts->i_rate_date = cmd.i_date;
983 p_ts->i_rate_delay = 0;
984 if( p_ts->i_rate_source != p_ts->i_rate )
986 const mtime_t i_duration = cmd.i_date - p_ts->i_rate_date;
987 p_ts->i_rate_delay = i_duration * p_ts->i_rate / p_ts->i_rate_source - i_duration;
989 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 )
991 const int canc = vlc_savecancel();
993 /* Auto reset to rate 1.0 */
994 msg_Warn( p_ts->p_input, "es out timeshift: auto reset rate to %d", p_ts->i_rate_source );
996 p_ts->i_cmd_delay = 0;
997 p_ts->i_buffering_delay = 0;
999 p_ts->i_rate_delay = 0;
1000 p_ts->i_rate_date = -1;
1001 p_ts->i_rate = p_ts->i_rate_source;
1003 if( !es_out_SetRate( p_ts->p_out, p_ts->i_rate_source, p_ts->i_rate ) )
1005 vlc_value_t val = { .i_int = p_ts->i_rate };
1007 * FIXME it is perfectly safe BUT it is ugly as it may hide a
1008 * rate change requested by user */
1009 input_ControlPush( p_ts->p_input, INPUT_CONTROL_SET_RATE, &val );
1012 vlc_restorecancel( canc );
1014 i_deadline = cmd.i_date + p_ts->i_cmd_delay + p_ts->i_rate_delay + p_ts->i_buffering_delay;
1018 /* Regulate the speed of command processing to the same one than
1020 vlc_cleanup_push( cmd_cleanup_routine, &cmd );
1022 mwait( i_deadline );
1026 /* Execute the command */
1027 const int canc = vlc_savecancel();
1028 switch( cmd.i_type )
1031 CmdExecuteAdd( p_ts->p_out, &cmd );
1032 CmdCleanAdd( &cmd );
1035 CmdExecuteSend( p_ts->p_out, &cmd );
1036 CmdCleanSend( &cmd );
1039 CmdExecuteControl( p_ts->p_out, &cmd );
1040 CmdCleanControl( &cmd );
1043 CmdExecuteDel( p_ts->p_out, &cmd );
1049 vlc_restorecancel( canc );
1055 /*****************************************************************************
1057 *****************************************************************************/
1058 static ts_storage_t *TsStorageNew( const char *psz_tmp_path, int64_t i_tmp_size_max )
1060 ts_storage_t *p_storage = calloc( 1, sizeof(ts_storage_t) );
1065 p_storage->p_next = NULL;
1068 p_storage->i_file_max = i_tmp_size_max;
1069 p_storage->i_file_size = 0;
1070 p_storage->p_filew = GetTmpFile( &p_storage->psz_file, psz_tmp_path );
1071 if( p_storage->psz_file )
1072 p_storage->p_filer = vlc_fopen( p_storage->psz_file, "rb" );
1075 p_storage->i_cmd_w = 0;
1076 p_storage->i_cmd_r = 0;
1077 p_storage->i_cmd_max = 30000;
1078 p_storage->p_cmd = malloc( p_storage->i_cmd_max * sizeof(*p_storage->p_cmd) );
1079 //fprintf( stderr, "\nSTORAGE name=%s size=%d KiB\n", p_storage->psz_file, p_storage->i_cmd_max * sizeof(*p_storage->p_cmd) /1024 );
1081 if( !p_storage->p_cmd || !p_storage->p_filew || !p_storage->p_filer )
1083 TsStorageDelete( p_storage );
1088 static void TsStorageDelete( ts_storage_t *p_storage )
1090 while( p_storage->i_cmd_r < p_storage->i_cmd_w )
1094 TsStoragePopCmd( p_storage, &cmd, true );
1098 free( p_storage->p_cmd );
1100 if( p_storage->p_filer )
1101 fclose( p_storage->p_filer );
1102 if( p_storage->p_filew )
1103 fclose( p_storage->p_filew );
1105 if( p_storage->psz_file )
1107 vlc_unlink( p_storage->psz_file );
1108 free( p_storage->psz_file );
1113 static void TsStoragePack( ts_storage_t *p_storage )
1115 /* Try to release a bit of memory */
1116 if( p_storage->i_cmd_w >= p_storage->i_cmd_max )
1119 p_storage->i_cmd_max = __MAX( p_storage->i_cmd_w, 1 );
1121 ts_cmd_t *p_new = realloc( p_storage->p_cmd, p_storage->i_cmd_max * sizeof(*p_storage->p_cmd) );
1123 p_storage->p_cmd = p_new;
1125 static bool TsStorageIsFull( ts_storage_t *p_storage, const ts_cmd_t *p_cmd )
1127 if( p_cmd && p_cmd->i_type == C_SEND && p_storage->i_cmd_w > 0 )
1129 size_t i_size = sizeof(*p_cmd->u.send.p_block) + p_cmd->u.send.p_block->i_buffer;
1131 if( p_storage->i_file_size + i_size >= p_storage->i_file_max )
1134 return p_storage->i_cmd_w >= p_storage->i_cmd_max;
1136 static bool TsStorageIsEmpty( ts_storage_t *p_storage )
1138 return !p_storage || p_storage->i_cmd_r >= p_storage->i_cmd_w;
1140 static void TsStoragePushCmd( ts_storage_t *p_storage, const ts_cmd_t *p_cmd, bool b_flush )
1142 ts_cmd_t cmd = *p_cmd;
1144 assert( !TsStorageIsFull( p_storage, p_cmd ) );
1146 if( cmd.i_type == C_SEND )
1148 block_t *p_block = cmd.u.send.p_block;
1150 cmd.u.send.p_block = NULL;
1151 cmd.u.send.i_offset = ftell( p_storage->p_filew );
1153 if( fwrite( p_block, sizeof(*p_block), 1, p_storage->p_filew ) != 1 )
1155 block_Release( p_block );
1158 p_storage->i_file_size += sizeof(*p_block);
1159 if( p_block->i_buffer > 0 )
1161 if( fwrite( p_block->p_buffer, p_block->i_buffer, 1, p_storage->p_filew ) != 1 )
1163 block_Release( p_block );
1167 p_storage->i_file_size += p_block->i_buffer;
1168 block_Release( p_block );
1171 fflush( p_storage->p_filew );
1173 p_storage->p_cmd[p_storage->i_cmd_w++] = cmd;
1175 static void TsStoragePopCmd( ts_storage_t *p_storage, ts_cmd_t *p_cmd, bool b_flush )
1177 assert( !TsStorageIsEmpty( p_storage ) );
1179 *p_cmd = p_storage->p_cmd[p_storage->i_cmd_r++];
1180 if( p_cmd->i_type == C_SEND )
1185 !fseek( p_storage->p_filer, p_cmd->u.send.i_offset, SEEK_SET ) &&
1186 fread( &block, sizeof(block), 1, p_storage->p_filer ) == 1 )
1188 block_t *p_block = block_Alloc( block.i_buffer );
1191 p_block->i_dts = block.i_dts;
1192 p_block->i_pts = block.i_pts;
1193 p_block->i_flags = block.i_flags;
1194 p_block->i_length = block.i_length;
1195 p_block->i_nb_samples = block.i_nb_samples;
1196 p_block->i_buffer = fread( p_block->p_buffer, 1, block.i_buffer, p_storage->p_filer );
1198 p_cmd->u.send.p_block = p_block;
1202 //fprintf( stderr, "TsStoragePopCmd: %m\n" );
1203 p_cmd->u.send.p_block = block_Alloc( 1 );
1208 /*****************************************************************************
1210 *****************************************************************************/
1211 static void CmdClean( ts_cmd_t *p_cmd )
1213 switch( p_cmd->i_type )
1216 CmdCleanAdd( p_cmd );
1219 CmdCleanSend( p_cmd );
1222 CmdCleanControl( p_cmd );
1232 static int CmdInitAdd( ts_cmd_t *p_cmd, es_out_id_t *p_es, const es_format_t *p_fmt, bool b_copy )
1234 p_cmd->i_type = C_ADD;
1235 p_cmd->i_date = mdate();
1236 p_cmd->u.add.p_es = p_es;
1239 p_cmd->u.add.p_fmt = malloc( sizeof(*p_fmt) );
1240 if( !p_cmd->u.add.p_fmt )
1241 return VLC_EGENERIC;
1242 es_format_Copy( p_cmd->u.add.p_fmt, p_fmt );
1246 p_cmd->u.add.p_fmt = (es_format_t*)p_fmt;
1250 static void CmdExecuteAdd( es_out_t *p_out, ts_cmd_t *p_cmd )
1252 p_cmd->u.add.p_es->p_es = es_out_Add( p_out, p_cmd->u.add.p_fmt );
1254 static void CmdCleanAdd( ts_cmd_t *p_cmd )
1256 es_format_Clean( p_cmd->u.add.p_fmt );
1257 free( p_cmd->u.add.p_fmt );
1260 static void CmdInitSend( ts_cmd_t *p_cmd, es_out_id_t *p_es, block_t *p_block )
1262 p_cmd->i_type = C_SEND;
1263 p_cmd->i_date = mdate();
1264 p_cmd->u.send.p_es = p_es;
1265 p_cmd->u.send.p_block = p_block;
1267 static int CmdExecuteSend( es_out_t *p_out, ts_cmd_t *p_cmd )
1269 block_t *p_block = p_cmd->u.send.p_block;
1271 p_cmd->u.send.p_block = NULL;
1275 if( p_cmd->u.send.p_es->p_es )
1276 return es_out_Send( p_out, p_cmd->u.send.p_es->p_es, p_block );
1277 block_Release( p_block );
1279 return VLC_EGENERIC;
1281 static void CmdCleanSend( ts_cmd_t *p_cmd )
1283 if( p_cmd->u.send.p_block )
1284 block_Release( p_cmd->u.send.p_block );
1287 static int CmdInitDel( ts_cmd_t *p_cmd, es_out_id_t *p_es )
1289 p_cmd->i_type = C_DEL;
1290 p_cmd->i_date = mdate();
1291 p_cmd->u.del.p_es = p_es;
1294 static void CmdExecuteDel( es_out_t *p_out, ts_cmd_t *p_cmd )
1296 if( p_cmd->u.del.p_es->p_es )
1297 es_out_Del( p_out, p_cmd->u.del.p_es->p_es );
1298 free( p_cmd->u.del.p_es );
1301 static int CmdInitControl( ts_cmd_t *p_cmd, int i_query, va_list args, bool b_copy )
1303 p_cmd->i_type = C_CONTROL;
1304 p_cmd->i_date = mdate();
1305 p_cmd->u.control.i_query = i_query;
1309 /* Pass-through control */
1310 case ES_OUT_SET_MODE: /* arg1= int */
1311 case ES_OUT_SET_GROUP: /* arg1= int */
1312 case ES_OUT_DEL_GROUP: /* arg1=int i_group */
1313 p_cmd->u.control.u.i_int = (int)va_arg( args, int );
1316 case ES_OUT_SET_PCR: /* arg1=int64_t i_pcr(microsecond!) (using default group 0)*/
1317 case ES_OUT_SET_NEXT_DISPLAY_TIME: /* arg1=int64_t i_pts(microsecond) */
1318 p_cmd->u.control.u.i_i64 = (int64_t)va_arg( args, int64_t );
1321 case ES_OUT_SET_GROUP_PCR: /* arg1= int i_group, arg2=int64_t i_pcr(microsecond!)*/
1322 p_cmd->u.control.u.int_i64.i_int = (int)va_arg( args, int );
1323 p_cmd->u.control.u.int_i64.i_i64 = (int64_t)va_arg( args, int64_t );
1326 case ES_OUT_SET_ES_SCRAMBLED_STATE:
1327 p_cmd->u.control.u.es_bool.p_es = (es_out_id_t*)va_arg( args, es_out_id_t * );
1328 p_cmd->u.control.u.es_bool.b_bool = (bool)va_arg( args, int );
1331 case ES_OUT_RESET_PCR: /* no arg */
1332 case ES_OUT_SET_EOS:
1335 case ES_OUT_SET_META: /* arg1=const vlc_meta_t* */
1336 case ES_OUT_SET_GROUP_META: /* arg1=int i_group arg2=const vlc_meta_t* */
1338 if( i_query == ES_OUT_SET_GROUP_META )
1339 p_cmd->u.control.u.int_meta.i_int = (int)va_arg( args, int );
1340 const vlc_meta_t *p_meta = va_arg( args, const vlc_meta_t * );
1344 p_cmd->u.control.u.int_meta.p_meta = vlc_meta_New();
1345 if( !p_cmd->u.control.u.int_meta.p_meta )
1346 return VLC_EGENERIC;
1347 vlc_meta_Merge( p_cmd->u.control.u.int_meta.p_meta, p_meta );
1351 /* The cast is only needed to avoid warning */
1352 p_cmd->u.control.u.int_meta.p_meta = (vlc_meta_t*)p_meta;
1357 case ES_OUT_SET_GROUP_EPG: /* arg1=int i_group arg2=const vlc_epg_t* */
1359 p_cmd->u.control.u.int_epg.i_int = (int)va_arg( args, int );
1360 const vlc_epg_t *p_epg = va_arg( args, const vlc_epg_t * );
1364 p_cmd->u.control.u.int_epg.p_epg = vlc_epg_New( p_epg->psz_name );
1365 if( !p_cmd->u.control.u.int_epg.p_epg )
1366 return VLC_EGENERIC;
1367 for( int i = 0; i < p_epg->i_event; i++ )
1369 vlc_epg_event_t *p_evt = p_epg->pp_event[i];
1371 vlc_epg_AddEvent( p_cmd->u.control.u.int_epg.p_epg,
1372 p_evt->i_start, p_evt->i_duration,
1374 p_evt->psz_short_description, p_evt->psz_description );
1376 vlc_epg_SetCurrent( p_cmd->u.control.u.int_epg.p_epg,
1377 p_epg->p_current ? p_epg->p_current->i_start : -1 );
1381 /* The cast is only needed to avoid warning */
1382 p_cmd->u.control.u.int_epg.p_epg = (vlc_epg_t*)p_epg;
1387 /* Modified control */
1388 case ES_OUT_SET_ES: /* arg1= es_out_id_t* */
1389 case ES_OUT_RESTART_ES: /* arg1= es_out_id_t* */
1390 case ES_OUT_SET_ES_DEFAULT: /* arg1= es_out_id_t* */
1391 p_cmd->u.control.u.p_es = (es_out_id_t*)va_arg( args, es_out_id_t * );
1394 case ES_OUT_SET_ES_STATE:/* arg1= es_out_id_t* arg2=bool */
1395 p_cmd->u.control.u.es_bool.p_es = (es_out_id_t*)va_arg( args, es_out_id_t * );
1396 p_cmd->u.control.u.es_bool.b_bool = (bool)va_arg( args, int );
1399 case ES_OUT_SET_ES_FMT: /* arg1= es_out_id_t* arg2=es_format_t* */
1401 p_cmd->u.control.u.es_fmt.p_es = (es_out_id_t*)va_arg( args, es_out_id_t * );
1402 es_format_t *p_fmt = (es_format_t*)va_arg( args, es_format_t * );
1406 p_cmd->u.control.u.es_fmt.p_fmt = malloc( sizeof(*p_fmt) );
1407 if( !p_cmd->u.control.u.es_fmt.p_fmt )
1408 return VLC_EGENERIC;
1409 es_format_Copy( p_cmd->u.control.u.es_fmt.p_fmt, p_fmt );
1413 p_cmd->u.control.u.es_fmt.p_fmt = p_fmt;
1417 case ES_OUT_SET_TIMES:
1419 double f_position = (double)va_arg( args, double );
1420 mtime_t i_time = (mtime_t)va_arg( args, mtime_t );
1421 mtime_t i_length = (mtime_t)va_arg( args, mtime_t );
1423 p_cmd->u.control.u.times.f_position = f_position;
1424 p_cmd->u.control.u.times.i_time = i_time;
1425 p_cmd->u.control.u.times.i_length = i_length;
1428 case ES_OUT_SET_JITTER:
1430 mtime_t i_pts_delay = (mtime_t)va_arg( args, mtime_t );
1431 mtime_t i_pts_jitter = (mtime_t)va_arg( args, mtime_t );
1432 int i_cr_average = (int)va_arg( args, int );
1434 p_cmd->u.control.u.jitter.i_pts_delay = i_pts_delay;
1435 p_cmd->u.control.u.jitter.i_pts_jitter = i_pts_jitter;
1436 p_cmd->u.control.u.jitter.i_cr_average = i_cr_average;
1442 return VLC_EGENERIC;
1447 static int CmdExecuteControl( es_out_t *p_out, ts_cmd_t *p_cmd )
1449 const int i_query = p_cmd->u.control.i_query;
1453 /* Pass-through control */
1454 case ES_OUT_SET_MODE: /* arg1= int */
1455 case ES_OUT_SET_GROUP: /* arg1= int */
1456 case ES_OUT_DEL_GROUP: /* arg1=int i_group */
1457 return es_out_Control( p_out, i_query, p_cmd->u.control.u.i_int );
1459 case ES_OUT_SET_PCR: /* arg1=int64_t i_pcr(microsecond!) (using default group 0)*/
1460 case ES_OUT_SET_NEXT_DISPLAY_TIME: /* arg1=int64_t i_pts(microsecond) */
1461 return es_out_Control( p_out, i_query, p_cmd->u.control.u.i_i64 );
1463 case ES_OUT_SET_GROUP_PCR: /* arg1= int i_group, arg2=int64_t i_pcr(microsecond!)*/
1464 return es_out_Control( p_out, i_query, p_cmd->u.control.u.int_i64.i_int,
1465 p_cmd->u.control.u.int_i64.i_i64 );
1467 case ES_OUT_RESET_PCR: /* no arg */
1468 case ES_OUT_SET_EOS:
1469 return es_out_Control( p_out, i_query );
1471 case ES_OUT_SET_GROUP_META: /* arg1=int i_group arg2=const vlc_meta_t* */
1472 return es_out_Control( p_out, i_query, p_cmd->u.control.u.int_meta.i_int,
1473 p_cmd->u.control.u.int_meta.p_meta );
1475 case ES_OUT_SET_GROUP_EPG: /* arg1=int i_group arg2=const vlc_epg_t* */
1476 return es_out_Control( p_out, i_query, p_cmd->u.control.u.int_epg.i_int,
1477 p_cmd->u.control.u.int_epg.p_epg );
1479 case ES_OUT_SET_ES_SCRAMBLED_STATE: /* arg1=int es_out_id_t* arg2=bool */
1480 return es_out_Control( p_out, i_query, p_cmd->u.control.u.es_bool.p_es->p_es,
1481 p_cmd->u.control.u.es_bool.b_bool );
1483 case ES_OUT_SET_META: /* arg1=const vlc_meta_t* */
1484 return es_out_Control( p_out, i_query, p_cmd->u.control.u.int_meta.p_meta );
1486 /* Modified control */
1487 case ES_OUT_SET_ES: /* arg1= es_out_id_t* */
1488 case ES_OUT_RESTART_ES: /* arg1= es_out_id_t* */
1489 case ES_OUT_SET_ES_DEFAULT: /* arg1= es_out_id_t* */
1490 return es_out_Control( p_out, i_query, p_cmd->u.control.u.p_es->p_es );
1492 case ES_OUT_SET_ES_STATE:/* arg1= es_out_id_t* arg2=bool */
1493 return es_out_Control( p_out, i_query, p_cmd->u.control.u.es_bool.p_es->p_es,
1494 p_cmd->u.control.u.es_bool.b_bool );
1496 case ES_OUT_SET_ES_FMT: /* arg1= es_out_id_t* arg2=es_format_t* */
1497 return es_out_Control( p_out, i_query, p_cmd->u.control.u.es_fmt.p_es->p_es,
1498 p_cmd->u.control.u.es_fmt.p_fmt );
1500 case ES_OUT_SET_TIMES:
1501 return es_out_Control( p_out, i_query, p_cmd->u.control.u.times.f_position,
1502 p_cmd->u.control.u.times.i_time,
1503 p_cmd->u.control.u.times.i_length );
1504 case ES_OUT_SET_JITTER:
1505 return es_out_Control( p_out, i_query, p_cmd->u.control.u.jitter.i_pts_delay,
1506 p_cmd->u.control.u.jitter.i_pts_jitter,
1507 p_cmd->u.control.u.jitter.i_cr_average );
1511 return VLC_EGENERIC;
1514 static void CmdCleanControl( ts_cmd_t *p_cmd )
1516 if( ( p_cmd->u.control.i_query == ES_OUT_SET_GROUP_META ||
1517 p_cmd->u.control.i_query == ES_OUT_SET_META ) &&
1518 p_cmd->u.control.u.int_meta.p_meta )
1520 vlc_meta_Delete( p_cmd->u.control.u.int_meta.p_meta );
1522 else if( p_cmd->u.control.i_query == ES_OUT_SET_GROUP_EPG &&
1523 p_cmd->u.control.u.int_epg.p_epg )
1525 vlc_epg_Delete( p_cmd->u.control.u.int_epg.p_epg );
1527 else if( p_cmd->u.control.i_query == ES_OUT_SET_ES_FMT &&
1528 p_cmd->u.control.u.es_fmt.p_fmt )
1530 es_format_Clean( p_cmd->u.control.u.es_fmt.p_fmt );
1531 free( p_cmd->u.control.u.es_fmt.p_fmt );
1536 /*****************************************************************************
1538 *****************************************************************************/
1539 static char *GetTmpPath( char *psz_path )
1541 if( psz_path && *psz_path )
1543 /* Make sure that the path exists and is a directory */
1545 const int i_ret = vlc_stat( psz_path, &s );
1547 if( i_ret < 0 && !vlc_mkdir( psz_path, 0600 ) )
1549 else if( i_ret == 0 && ( s.st_mode & S_IFDIR ) )
1554 /* Create a suitable path */
1556 const DWORD dwCount = GetTempPathW( 0, NULL );
1557 wchar_t *psw_path = calloc( dwCount + 1, sizeof(wchar_t) );
1560 if( GetTempPathW( dwCount + 1, psw_path ) <= 0 )
1564 psw_path = _wgetcwd( NULL, 0 );
1571 psz_path = FromWide( psw_path );
1572 while( psz_path && *psz_path && psz_path[strlen( psz_path ) - 1] == '\\' )
1573 psz_path[strlen( psz_path ) - 1] = '\0';
1578 if( !psz_path || *psz_path == '\0' )
1581 return strdup( "C:" );
1584 psz_path = strdup( DIR_SEP"tmp" );
1590 static FILE *GetTmpFile( char **ppsz_file, const char *psz_path )
1598 if( asprintf( &psz_name, "%s/vlc-timeshift.XXXXXX", psz_path ) < 0 )
1602 fd = vlc_mkstemp( psz_name );
1603 *ppsz_file = psz_name;
1609 f = fdopen( fd, "w+b" );