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 *****************************************************************************/
35 #if defined (WIN32) && !defined (UNDER_CE)
38 #ifdef HAVE_SYS_STAT_H
39 # include <sys/stat.h>
42 #include <vlc_common.h>
43 #include <vlc_charset.h>
45 #include <vlc_input.h>
46 #include <vlc_es_out.h>
47 #include <vlc_block.h>
48 #include "input_internal.h"
50 #include "es_out_timeshift.h"
52 /*****************************************************************************
54 *****************************************************************************/
56 /* XXX attribute_packed is (and MUST be) used ONLY to reduce memory usage */
57 #ifdef HAVE_ATTRIBUTE_PACKED
58 # define attribute_packed __attribute__((__packed__))
60 # define attribute_packed
71 typedef struct attribute_packed
77 typedef struct attribute_packed
82 typedef struct attribute_packed
86 int i_offset; /* We do not use file > INT_MAX */
89 typedef struct attribute_packed
127 typedef struct attribute_packed
136 ts_cmd_control_t control;
140 typedef struct ts_storage_t ts_storage_t;
143 ts_storage_t *p_next;
146 char *psz_file; /* Filename */
147 size_t i_file_max; /* Max size in bytes */
148 int64_t i_file_size;/* Current size in bytes */
149 FILE *p_filew; /* FILE handle for data writing */
150 FILE *p_filer; /* FILE handle for data reading */
164 input_thread_t *p_input;
166 int64_t i_tmp_size_max;
167 const char *psz_tmp_path;
169 /* Lock for all following fields */
175 mtime_t i_pause_date;
181 mtime_t i_rate_delay;
184 mtime_t i_buffering_delay;
187 ts_storage_t *p_storage_r;
188 ts_storage_t *p_storage_w;
201 input_thread_t *p_input;
205 int64_t i_tmp_size_max; /* Maximal temporary file size in byte */
206 char *psz_tmp_path; /* Path for temporary files */
208 /* Lock for all following fields */
213 ts_thread_t *p_thread;
217 bool b_input_paused_source;
219 int i_input_rate_source;
226 static es_out_id_t *Add ( es_out_t *, const es_format_t * );
227 static int Send ( es_out_t *, es_out_id_t *, block_t * );
228 static void Del ( es_out_t *, es_out_id_t * );
229 static int Control( es_out_t *, int i_query, va_list );
230 static void Destroy( es_out_t * );
232 static int TsStart( es_out_t * );
233 static void TsAutoStop( es_out_t * );
235 static void TsStop( ts_thread_t * );
236 static void TsPushCmd( ts_thread_t *, ts_cmd_t * );
237 static int TsPopCmdLocked( ts_thread_t *, ts_cmd_t *, bool b_flush );
238 static bool TsHasCmd( ts_thread_t * );
239 static bool TsIsUnused( ts_thread_t * );
240 static int TsChangePause( ts_thread_t *, bool b_source_paused, bool b_paused, mtime_t i_date );
241 static int TsChangeRate( ts_thread_t *, int i_src_rate, int i_rate );
242 static mtime_t TsGetDelay( ts_thread_t * );
244 static void *TsRun( vlc_object_t * );
246 static ts_storage_t *TsStorageNew( const char *psz_path, int64_t i_tmp_size_max );
247 static void TsStorageDelete( ts_storage_t * );
248 static void TsStoragePack( ts_storage_t *p_storage );
249 static bool TsStorageIsFull( ts_storage_t *, const ts_cmd_t *p_cmd );
250 static bool TsStorageIsEmpty( ts_storage_t * );
251 static void TsStoragePushCmd( ts_storage_t *, const ts_cmd_t *p_cmd, bool b_flush );
252 static void TsStoragePopCmd( ts_storage_t *p_storage, ts_cmd_t *p_cmd, bool b_flush );
254 static void CmdClean( ts_cmd_t * );
255 static void cmd_cleanup_routine( void *p ) { CmdClean( p ); }
257 static int CmdInitAdd ( ts_cmd_t *, es_out_id_t *, const es_format_t *, bool b_copy );
258 static void CmdInitSend ( ts_cmd_t *, es_out_id_t *, block_t * );
259 static int CmdInitDel ( ts_cmd_t *, es_out_id_t * );
260 static int CmdInitControl( ts_cmd_t *, int i_query, va_list, bool b_copy );
263 static void CmdCleanAdd ( ts_cmd_t * );
264 static void CmdCleanSend ( ts_cmd_t * );
265 static void CmdCleanControl( ts_cmd_t *p_cmd );
267 /* XXX these functions will take the destination es_out_t */
268 static void CmdExecuteAdd ( es_out_t *, ts_cmd_t * );
269 static int CmdExecuteSend ( es_out_t *, ts_cmd_t * );
270 static void CmdExecuteDel ( es_out_t *, ts_cmd_t * );
271 static int CmdExecuteControl( es_out_t *, ts_cmd_t * );
274 static char *GetTmpPath( char *psz_path );
275 static FILE *GetTmpFile( char **ppsz_file, const char *psz_path );
277 /*****************************************************************************
278 * input_EsOutTimeshiftNew:
279 *****************************************************************************/
280 es_out_t *input_EsOutTimeshiftNew( input_thread_t *p_input, es_out_t *p_next_out, int i_rate )
282 es_out_t *p_out = malloc( sizeof(*p_out) );
286 es_out_sys_t *p_sys = malloc( sizeof(*p_sys) );
295 p_out->pf_send = Send;
297 p_out->pf_control = Control;
298 p_out->pf_destroy = Destroy;
299 p_out->p_sys = p_sys;
300 p_out->b_sout = p_input->p->p_sout != NULL;
303 p_sys->b_input_paused = false;
304 p_sys->b_input_paused_source = false;
305 p_sys->p_input = p_input;
306 p_sys->i_input_rate = i_rate;
307 p_sys->i_input_rate_source = i_rate;
309 p_sys->p_out = p_next_out;
310 vlc_mutex_init_recursive( &p_sys->lock );
312 p_sys->b_delayed = false;
313 p_sys->p_thread = NULL;
315 TAB_INIT( p_sys->i_es, p_sys->pp_es );
318 const int i_tmp_size_max = var_CreateGetInteger( p_input, "input-timeshift-granularity" );
319 if( i_tmp_size_max < 0 )
320 p_sys->i_tmp_size_max = 50*1024*1024;
322 p_sys->i_tmp_size_max = __MAX( i_tmp_size_max, 1*1024*1024 );
323 msg_Dbg( p_input, "using timeshift granularity of %d bytes",
324 (int)p_sys->i_tmp_size_max );
326 char *psz_tmp_path = var_CreateGetNonEmptyString( p_input, "input-timeshift-path" );
327 p_sys->psz_tmp_path = GetTmpPath( psz_tmp_path );
328 msg_Dbg( p_input, "using timeshift path '%s'", p_sys->psz_tmp_path );
331 #define S(t) msg_Err( p_input, "SIZEOF("#t")=%d", sizeof(t) )
343 /*****************************************************************************
345 *****************************************************************************/
346 static void Destroy( es_out_t *p_out )
348 es_out_sys_t *p_sys = p_out->p_sys;
350 if( p_sys->b_delayed )
352 TsStop( p_sys->p_thread );
353 p_sys->b_delayed = false;
356 while( p_sys->i_es > 0 )
357 Del( p_out, p_sys->pp_es[0] );
358 TAB_CLEAN( p_sys->i_es, p_sys->pp_es );
360 free( p_sys->psz_tmp_path );
361 vlc_mutex_destroy( &p_sys->lock );
366 static es_out_id_t *Add( es_out_t *p_out, const es_format_t *p_fmt )
368 es_out_sys_t *p_sys = p_out->p_sys;
371 es_out_id_t *p_es = malloc( sizeof( *p_es ) );
375 vlc_mutex_lock( &p_sys->lock );
379 if( CmdInitAdd( &cmd, p_es, p_fmt, p_sys->b_delayed ) )
381 vlc_mutex_unlock( &p_sys->lock );
386 TAB_APPEND( p_sys->i_es, p_sys->pp_es, p_es );
388 if( p_sys->b_delayed )
389 TsPushCmd( p_sys->p_thread, &cmd );
391 CmdExecuteAdd( p_sys->p_out, &cmd );
393 vlc_mutex_unlock( &p_sys->lock );
397 static int Send( es_out_t *p_out, es_out_id_t *p_es, block_t *p_block )
399 es_out_sys_t *p_sys = p_out->p_sys;
401 int i_ret = VLC_SUCCESS;
403 vlc_mutex_lock( &p_sys->lock );
407 CmdInitSend( &cmd, p_es, p_block );
408 if( p_sys->b_delayed )
409 TsPushCmd( p_sys->p_thread, &cmd );
411 i_ret = CmdExecuteSend( p_sys->p_out, &cmd) ;
413 vlc_mutex_unlock( &p_sys->lock );
417 static void Del( es_out_t *p_out, es_out_id_t *p_es )
419 es_out_sys_t *p_sys = p_out->p_sys;
422 vlc_mutex_lock( &p_sys->lock );
426 CmdInitDel( &cmd, p_es );
427 if( p_sys->b_delayed )
428 TsPushCmd( p_sys->p_thread, &cmd );
430 CmdExecuteDel( p_sys->p_out, &cmd );
432 TAB_REMOVE( p_sys->i_es, p_sys->pp_es, p_es );
434 vlc_mutex_unlock( &p_sys->lock );
437 static int ControlLockedGetEmpty( es_out_t *p_out, bool *pb_empty )
439 es_out_sys_t *p_sys = p_out->p_sys;
441 if( p_sys->b_delayed && TsHasCmd( p_sys->p_thread ) )
444 *pb_empty = es_out_GetEmpty( p_sys->p_out );
448 static int ControlLockedGetWakeup( es_out_t *p_out, mtime_t *pi_wakeup )
450 es_out_sys_t *p_sys = p_out->p_sys;
452 if( p_sys->b_delayed )
454 assert( !p_sys->p_input->b_can_pace_control );
459 *pi_wakeup = es_out_GetWakeup( p_sys->p_out );
464 static int ControlLockedGetBuffering( es_out_t *p_out, bool *pb_buffering, mtime_t *pi_delay )
466 es_out_sys_t *p_sys = p_out->p_sys;
468 if( p_sys->b_delayed )
471 es_out_GetBuffering( p_sys->p_out, &i_delay );
473 *pb_buffering = true;
474 *pi_delay = i_delay + TsGetDelay( p_sys->p_thread );
478 *pb_buffering = es_out_GetBuffering( p_sys->p_out, pi_delay );
483 static int ControlLockedSetPauseState( es_out_t *p_out, bool b_source_paused, bool b_paused, mtime_t i_date )
485 es_out_sys_t *p_sys = p_out->p_sys;
488 if( !p_sys->b_delayed && !b_source_paused == !b_paused )
490 i_ret = es_out_SetPauseState( p_sys->p_out, b_source_paused, b_paused, i_date );
494 i_ret = VLC_EGENERIC;
495 if( !p_sys->p_input->b_can_pace_control )
497 if( !p_sys->b_delayed )
499 if( p_sys->b_delayed )
500 i_ret = TsChangePause( p_sys->p_thread, b_source_paused, b_paused, i_date );
504 /* XXX we may do it BUT it would be better to finish the clock clean up+improvments
505 * and so be able to advertize correctly pace control property in access
507 msg_Err( p_sys->p_input, "EsOutTimeshift does not work with streams that have space control" );
513 p_sys->b_input_paused_source = b_source_paused;
514 p_sys->b_input_paused = b_paused;
518 static int ControlLockedSetRate( es_out_t *p_out, int i_src_rate, int i_rate )
520 es_out_sys_t *p_sys = p_out->p_sys;
523 if( !p_sys->b_delayed && i_src_rate == i_rate )
525 i_ret = es_out_SetRate( p_sys->p_out, i_src_rate, i_rate );
529 i_ret = VLC_EGENERIC;
530 if( !p_sys->p_input->b_can_pace_control )
532 if( !p_sys->b_delayed )
534 if( p_sys->b_delayed )
535 i_ret = TsChangeRate( p_sys->p_thread, i_src_rate, i_rate );
539 /* XXX we may do it BUT it would be better to finish the clock clean up+improvments
540 * and so be able to advertize correctly pace control property in access
542 msg_Err( p_sys->p_input, "EsOutTimeshift does not work with streams that have space control" );
549 p_sys->i_input_rate_source = i_src_rate;
550 p_sys->i_input_rate = i_rate;
554 static int ControlLockedSetTime( es_out_t *p_out, mtime_t i_date )
556 es_out_sys_t *p_sys = p_out->p_sys;
558 if( !p_sys->b_delayed )
559 return es_out_SetTime( p_sys->p_out, i_date );
562 msg_Err( p_sys->p_input, "EsOutTimeshift does not yet support time change" );
565 static int ControlLockedSetFrameNext( es_out_t *p_out )
567 es_out_sys_t *p_sys = p_out->p_sys;
569 return es_out_SetFrameNext( p_sys->p_out );
572 static int ControlLocked( es_out_t *p_out, int i_query, va_list args )
574 es_out_sys_t *p_sys = p_out->p_sys;
578 /* Invalid query for this es_out level */
579 case ES_OUT_SET_ES_BY_ID:
580 case ES_OUT_RESTART_ES_BY_ID:
581 case ES_OUT_SET_ES_DEFAULT_BY_ID:
582 case ES_OUT_SET_DELAY:
583 case ES_OUT_SET_RECORD_STATE:
587 /* TODO ? or to remove ? */
591 /* Pass-through control */
592 case ES_OUT_SET_ACTIVE:
593 case ES_OUT_SET_MODE:
594 case ES_OUT_SET_GROUP:
596 case ES_OUT_SET_GROUP_PCR:
597 case ES_OUT_RESET_PCR:
598 case ES_OUT_SET_NEXT_DISPLAY_TIME:
599 case ES_OUT_SET_GROUP_META:
600 case ES_OUT_SET_GROUP_EPG:
601 case ES_OUT_DEL_GROUP:
603 case ES_OUT_RESTART_ES:
604 case ES_OUT_SET_ES_DEFAULT:
605 case ES_OUT_SET_ES_STATE:
606 case ES_OUT_SET_ES_FMT:
609 if( CmdInitControl( &cmd, i_query, args, p_sys->b_delayed ) )
611 if( p_sys->b_delayed )
613 TsPushCmd( p_sys->p_thread, &cmd );
616 return CmdExecuteControl( p_sys->p_out, &cmd );
619 /* Special control when delayed */
620 case ES_OUT_GET_ES_STATE:
622 es_out_id_t *p_es = (es_out_id_t*)va_arg( args, es_out_id_t * );
623 bool *pb_enabled = (bool*)va_arg( args, bool* );
625 if( p_sys->b_delayed )
630 return es_out_Control( p_sys->p_out, ES_OUT_GET_ES_STATE, p_es->p_es, pb_enabled );
633 /* Special internal input control */
634 case ES_OUT_GET_EMPTY:
636 bool *pb_empty = (bool*)va_arg( args, bool* );
637 return ControlLockedGetEmpty( p_out, pb_empty );
639 case ES_OUT_GET_WAKE_UP: /* TODO ? */
641 mtime_t *pi_wakeup = (mtime_t*)va_arg( args, mtime_t* );
642 return ControlLockedGetWakeup( p_out, pi_wakeup );
644 case ES_OUT_GET_BUFFERING:
646 bool *pb_buffering = (bool *)va_arg( args, bool* );
647 mtime_t *pi_delay = (mtime_t*)va_arg( args, mtime_t* );
648 return ControlLockedGetBuffering( p_out, pb_buffering, pi_delay );
650 case ES_OUT_SET_PAUSE_STATE:
652 const bool b_source_paused = (bool)va_arg( args, int );
653 const bool b_paused = (bool)va_arg( args, int );
654 const mtime_t i_date = (mtime_t) va_arg( args, mtime_t );
656 return ControlLockedSetPauseState( p_out, b_source_paused, b_paused, i_date );
658 case ES_OUT_SET_RATE:
660 const int i_src_rate = (int)va_arg( args, int );
661 const int i_rate = (int)va_arg( args, int );
663 return ControlLockedSetRate( p_out, i_src_rate, i_rate );
665 case ES_OUT_SET_TIME:
667 const mtime_t i_date = (mtime_t)va_arg( args, mtime_t );
669 return ControlLockedSetTime( p_out, i_date );
671 case ES_OUT_SET_FRAME_NEXT:
673 return ControlLockedSetFrameNext( p_out );
677 msg_Err( p_sys->p_input, "Unknown es_out_Control query !" );
682 static int Control( es_out_t *p_out, int i_query, va_list args )
684 es_out_sys_t *p_sys = p_out->p_sys;
687 vlc_mutex_lock( &p_sys->lock );
691 i_ret = ControlLocked( p_out, i_query, args );
693 vlc_mutex_unlock( &p_sys->lock );
698 /*****************************************************************************
700 *****************************************************************************/
701 static void TsDestructor( vlc_object_t *p_this )
703 ts_thread_t *p_ts = (ts_thread_t*)p_this;
705 vlc_cond_destroy( &p_ts->wait );
706 vlc_mutex_destroy( &p_ts->lock );
708 static int TsStart( es_out_t *p_out )
710 es_out_sys_t *p_sys = p_out->p_sys;
713 assert( !p_sys->b_delayed );
715 p_sys->p_thread = p_ts = vlc_custom_create( p_sys->p_input, sizeof(ts_thread_t),
716 VLC_OBJECT_GENERIC, "es out timeshift" );
720 p_ts->i_tmp_size_max = p_sys->i_tmp_size_max;
721 p_ts->psz_tmp_path = p_sys->psz_tmp_path;
722 p_ts->p_input = p_sys->p_input;
723 p_ts->p_out = p_sys->p_out;
724 vlc_mutex_init( &p_ts->lock );
725 vlc_cond_init( &p_ts->wait );
726 p_ts->b_paused = p_sys->b_input_paused && !p_sys->b_input_paused_source;
727 p_ts->i_pause_date = p_ts->b_paused ? mdate() : -1;
728 p_ts->i_rate_source = p_sys->i_input_rate_source;
729 p_ts->i_rate = p_sys->i_input_rate;
730 p_ts->i_rate_date = -1;
731 p_ts->i_rate_delay = 0;
732 p_ts->i_buffering_delay = 0;
733 p_ts->i_cmd_delay = 0;
734 p_ts->p_storage_r = NULL;
735 p_ts->p_storage_w = NULL;
737 vlc_object_set_destructor( p_ts, TsDestructor );
739 p_sys->b_delayed = true;
740 if( vlc_thread_create( p_ts, "es out timeshift",
741 TsRun, VLC_THREAD_PRIORITY_INPUT, false ) )
743 msg_Err( p_sys->p_input, "cannot create input thread" );
745 vlc_object_release( p_ts );
747 p_sys->b_delayed = false;
753 static void TsAutoStop( es_out_t *p_out )
755 es_out_sys_t *p_sys = p_out->p_sys;
757 if( !p_sys->b_delayed || !TsIsUnused( p_sys->p_thread ) )
760 msg_Warn( p_sys->p_input, "es out timeshift: auto stop" );
761 TsStop( p_sys->p_thread );
763 p_sys->b_delayed = false;
765 static void TsStop( ts_thread_t *p_ts )
767 vlc_object_kill( p_ts );
768 vlc_thread_join( p_ts );
770 vlc_mutex_lock( &p_ts->lock );
775 if( TsPopCmdLocked( p_ts, &cmd, true ) )
780 assert( !p_ts->p_storage_r || !p_ts->p_storage_r->p_next );
781 if( p_ts->p_storage_r )
782 TsStorageDelete( p_ts->p_storage_r );
783 vlc_mutex_unlock( &p_ts->lock );
785 vlc_object_release( p_ts );
787 static void TsPushCmd( ts_thread_t *p_ts, ts_cmd_t *p_cmd )
789 vlc_mutex_lock( &p_ts->lock );
791 if( !p_ts->p_storage_w || TsStorageIsFull( p_ts->p_storage_w, p_cmd ) )
793 ts_storage_t *p_storage = TsStorageNew( p_ts->psz_tmp_path, p_ts->i_tmp_size_max );
798 vlc_mutex_unlock( &p_ts->lock );
799 /* TODO warn the user (but only once) */
803 if( !p_ts->p_storage_w )
805 p_ts->p_storage_r = p_ts->p_storage_w = p_storage;
809 TsStoragePack( p_ts->p_storage_w );
810 p_ts->p_storage_w->p_next = p_storage;
811 p_ts->p_storage_w = p_storage;
815 /* TODO return error and warn the user (but only once) */
816 TsStoragePushCmd( p_ts->p_storage_w, p_cmd, p_ts->p_storage_r == p_ts->p_storage_w );
818 vlc_cond_signal( &p_ts->wait );
820 vlc_mutex_unlock( &p_ts->lock );
822 static int TsPopCmdLocked( ts_thread_t *p_ts, ts_cmd_t *p_cmd, bool b_flush )
824 vlc_assert_locked( &p_ts->lock );
826 if( TsStorageIsEmpty( p_ts->p_storage_r ) )
829 TsStoragePopCmd( p_ts->p_storage_r, p_cmd, b_flush );
831 while( p_ts->p_storage_r && TsStorageIsEmpty( p_ts->p_storage_r ) )
833 ts_storage_t *p_next = p_ts->p_storage_r->p_next;
837 TsStorageDelete( p_ts->p_storage_r );
838 p_ts->p_storage_r = p_next;
843 static bool TsHasCmd( ts_thread_t *p_ts )
847 vlc_mutex_lock( &p_ts->lock );
848 b_cmd = TsStorageIsEmpty( p_ts->p_storage_r );
849 vlc_mutex_unlock( &p_ts->lock );
853 static bool TsIsUnused( ts_thread_t *p_ts )
857 vlc_mutex_lock( &p_ts->lock );
858 b_unused = !p_ts->b_paused &&
859 p_ts->i_rate == p_ts->i_rate_source &&
860 TsStorageIsEmpty( p_ts->p_storage_r );
861 vlc_mutex_unlock( &p_ts->lock );
865 static int TsChangePause( ts_thread_t *p_ts, bool b_source_paused, bool b_paused, mtime_t i_date )
867 vlc_mutex_lock( &p_ts->lock );
872 assert( !b_source_paused );
873 i_ret = es_out_SetPauseState( p_ts->p_out, true, true, i_date );
877 i_ret = es_out_SetPauseState( p_ts->p_out, false, false, i_date );
884 assert( p_ts->i_pause_date > 0 );
886 p_ts->i_cmd_delay += i_date - p_ts->i_pause_date;
889 p_ts->b_paused = b_paused;
890 p_ts->i_pause_date = i_date;
892 vlc_cond_signal( &p_ts->wait );
894 vlc_mutex_unlock( &p_ts->lock );
897 static int TsChangeRate( ts_thread_t *p_ts, int i_src_rate, int i_rate )
901 vlc_mutex_lock( &p_ts->lock );
902 p_ts->i_cmd_delay += p_ts->i_rate_delay;
904 p_ts->i_rate_date = -1;
905 p_ts->i_rate_delay = 0;
906 p_ts->i_rate = i_rate;
907 p_ts->i_rate_source = i_src_rate;
909 i_ret = es_out_SetRate( p_ts->p_out, i_rate, i_rate );
910 vlc_mutex_unlock( &p_ts->lock );
914 static mtime_t TsGetDelay( ts_thread_t *p_ts )
918 vlc_mutex_lock( &p_ts->lock );
919 i_delay = p_ts->i_cmd_delay + p_ts->i_rate_delay + p_ts->i_buffering_delay;
921 i_delay += mdate() - p_ts->i_pause_date;
922 vlc_mutex_unlock( &p_ts->lock );
928 static void *TsRun( vlc_object_t *p_thread )
930 ts_thread_t *p_ts = (ts_thread_t*)p_thread;
931 mtime_t i_buffering_date = -1;
939 /* Pop a command to execute */
940 vlc_mutex_lock( &p_ts->lock );
941 mutex_cleanup_push( &p_ts->lock );
945 const int canc = vlc_savecancel();
946 b_buffering = es_out_GetBuffering( p_ts->p_out, NULL );
948 if( ( !p_ts->b_paused || b_buffering ) && !TsPopCmdLocked( p_ts, &cmd, false ) )
950 vlc_restorecancel( canc );
953 vlc_restorecancel( canc );
955 vlc_cond_wait( &p_ts->wait, &p_ts->lock );
958 if( b_buffering && i_buffering_date < 0 )
960 i_buffering_date = cmd.i_date;
962 else if( i_buffering_date > 0 )
964 p_ts->i_buffering_delay += i_buffering_date - cmd.i_date; /* It is < 0 */
966 i_buffering_date = cmd.i_date;
968 i_buffering_date = -1;
971 if( p_ts->i_rate_date < 0 )
972 p_ts->i_rate_date = cmd.i_date;
974 p_ts->i_rate_delay = 0;
975 if( p_ts->i_rate_source != p_ts->i_rate )
977 const mtime_t i_duration = cmd.i_date - p_ts->i_rate_date;
978 p_ts->i_rate_delay = i_duration * p_ts->i_rate / p_ts->i_rate_source - i_duration;
980 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 )
982 const int canc = vlc_savecancel();
984 /* Auto reset to rate 1.0 */
985 msg_Warn( p_ts->p_input, "es out timeshift: auto reset rate to %d", p_ts->i_rate_source );
987 p_ts->i_cmd_delay = 0;
988 p_ts->i_buffering_delay = 0;
990 p_ts->i_rate_delay = 0;
991 p_ts->i_rate_date = -1;
992 p_ts->i_rate = p_ts->i_rate_source;
994 if( !es_out_SetRate( p_ts->p_out, p_ts->i_rate_source, p_ts->i_rate ) )
996 vlc_value_t val = { .i_int = p_ts->i_rate };
998 * FIXME it is perfectly safe BUT it is ugly as it may hide a
999 * rate change requested by user */
1000 input_ControlPush( p_ts->p_input, INPUT_CONTROL_SET_RATE, &val );
1003 vlc_restorecancel( canc );
1005 i_deadline = cmd.i_date + p_ts->i_cmd_delay + p_ts->i_rate_delay + p_ts->i_buffering_delay;
1009 /* Regulate the speed of command processing to the same one than
1011 vlc_cleanup_push( cmd_cleanup_routine, &cmd );
1013 mwait( i_deadline );
1017 /* Execute the command */
1018 const int canc = vlc_savecancel();
1019 switch( cmd.i_type )
1022 CmdExecuteAdd( p_ts->p_out, &cmd );
1023 CmdCleanAdd( &cmd );
1026 CmdExecuteSend( p_ts->p_out, &cmd );
1027 CmdCleanSend( &cmd );
1030 CmdExecuteControl( p_ts->p_out, &cmd );
1031 CmdCleanControl( &cmd );
1034 CmdExecuteDel( p_ts->p_out, &cmd );
1040 vlc_restorecancel( canc );
1046 /*****************************************************************************
1048 *****************************************************************************/
1049 static ts_storage_t *TsStorageNew( const char *psz_tmp_path, int64_t i_tmp_size_max )
1051 ts_storage_t *p_storage = calloc( 1, sizeof(ts_storage_t) );
1056 p_storage->p_next = NULL;
1059 p_storage->i_file_max = i_tmp_size_max;
1060 p_storage->i_file_size = 0;
1061 p_storage->p_filew = GetTmpFile( &p_storage->psz_file, psz_tmp_path );
1062 if( p_storage->psz_file )
1063 p_storage->p_filer = utf8_fopen( p_storage->psz_file, "rb" );
1066 p_storage->i_cmd_w = 0;
1067 p_storage->i_cmd_r = 0;
1068 p_storage->i_cmd_max = 30000;
1069 p_storage->p_cmd = malloc( p_storage->i_cmd_max * sizeof(*p_storage->p_cmd) );
1070 //fprintf( stderr, "\nSTORAGE name=%s size=%d kbytes\n", p_storage->psz_file, p_storage->i_cmd_max * sizeof(*p_storage->p_cmd) /1024 );
1072 if( !p_storage->p_cmd || !p_storage->p_filew || !p_storage->p_filer )
1074 TsStorageDelete( p_storage );
1079 static void TsStorageDelete( ts_storage_t *p_storage )
1081 while( p_storage->i_cmd_r < p_storage->i_cmd_w )
1085 TsStoragePopCmd( p_storage, &cmd, true );
1089 free( p_storage->p_cmd );
1091 if( p_storage->p_filer )
1092 fclose( p_storage->p_filer );
1093 if( p_storage->p_filew )
1094 fclose( p_storage->p_filew );
1096 if( p_storage->psz_file )
1098 utf8_unlink( p_storage->psz_file );
1099 free( p_storage->psz_file );
1104 static void TsStoragePack( ts_storage_t *p_storage )
1106 /* Try to release a bit of memory */
1107 if( p_storage->i_cmd_w >= p_storage->i_cmd_max )
1110 p_storage->i_cmd_max = __MAX( p_storage->i_cmd_w, 1 );
1112 ts_cmd_t *p_new = realloc( p_storage->p_cmd, p_storage->i_cmd_max * sizeof(*p_storage->p_cmd) );
1114 p_storage->p_cmd = p_new;
1116 static bool TsStorageIsFull( ts_storage_t *p_storage, const ts_cmd_t *p_cmd )
1118 if( p_cmd && p_cmd->i_type == C_SEND && p_storage->i_cmd_w > 0 )
1120 size_t i_size = sizeof(*p_cmd->send.p_block) + p_cmd->send.p_block->i_buffer;
1122 if( p_storage->i_file_size + i_size >= p_storage->i_file_max )
1125 return p_storage->i_cmd_w >= p_storage->i_cmd_max;
1127 static bool TsStorageIsEmpty( ts_storage_t *p_storage )
1129 return !p_storage || p_storage->i_cmd_r >= p_storage->i_cmd_w;
1131 static void TsStoragePushCmd( ts_storage_t *p_storage, const ts_cmd_t *p_cmd, bool b_flush )
1133 ts_cmd_t cmd = *p_cmd;
1135 assert( !TsStorageIsFull( p_storage, p_cmd ) );
1137 if( cmd.i_type == C_SEND )
1139 block_t *p_block = cmd.send.p_block;
1141 cmd.send.p_block = NULL;
1142 cmd.send.i_offset = ftell( p_storage->p_filew );
1144 if( fwrite( p_block, sizeof(*p_block), 1, p_storage->p_filew ) != 1 )
1146 block_Release( p_block );
1149 p_storage->i_file_size += sizeof(*p_block);
1150 if( p_block->i_buffer > 0 )
1152 if( fwrite( p_block->p_buffer, p_block->i_buffer, 1, p_storage->p_filew ) != 1 )
1154 block_Release( p_block );
1158 p_storage->i_file_size += p_block->i_buffer;
1159 block_Release( p_block );
1162 fflush( p_storage->p_filew );
1164 p_storage->p_cmd[p_storage->i_cmd_w++] = cmd;
1166 static void TsStoragePopCmd( ts_storage_t *p_storage, ts_cmd_t *p_cmd, bool b_flush )
1168 assert( !TsStorageIsEmpty( p_storage ) );
1170 *p_cmd = p_storage->p_cmd[p_storage->i_cmd_r++];
1171 if( p_cmd->i_type == C_SEND )
1176 !fseek( p_storage->p_filer, p_cmd->send.i_offset, SEEK_SET ) &&
1177 fread( &block, sizeof(block), 1, p_storage->p_filer ) == 1 )
1179 block_t *p_block = block_Alloc( block.i_buffer );
1182 p_block->i_dts = block.i_dts;
1183 p_block->i_pts = block.i_pts;
1184 p_block->i_flags = block.i_flags;
1185 p_block->i_length = block.i_length;
1186 p_block->i_rate = block.i_rate;
1187 p_block->i_samples = block.i_samples;
1188 p_block->i_buffer = fread( p_block->p_buffer, 1, block.i_buffer, p_storage->p_filer );
1190 p_cmd->send.p_block = p_block;
1194 //fprintf( stderr, "TsStoragePopCmd: %m\n" );
1195 p_cmd->send.p_block = block_Alloc( 1 );
1200 /*****************************************************************************
1202 *****************************************************************************/
1203 static void CmdClean( ts_cmd_t *p_cmd )
1205 switch( p_cmd->i_type )
1208 CmdCleanAdd( p_cmd );
1211 CmdCleanSend( p_cmd );
1214 CmdCleanControl( p_cmd );
1224 static int CmdInitAdd( ts_cmd_t *p_cmd, es_out_id_t *p_es, const es_format_t *p_fmt, bool b_copy )
1226 p_cmd->i_type = C_ADD;
1227 p_cmd->i_date = mdate();
1228 p_cmd->add.p_es = p_es;
1231 p_cmd->add.p_fmt = malloc( sizeof(*p_fmt) );
1232 if( !p_cmd->add.p_fmt )
1233 return VLC_EGENERIC;
1234 es_format_Copy( p_cmd->add.p_fmt, p_fmt );
1238 p_cmd->add.p_fmt = (es_format_t*)p_fmt;
1242 static void CmdExecuteAdd( es_out_t *p_out, ts_cmd_t *p_cmd )
1244 p_cmd->add.p_es->p_es = es_out_Add( p_out, p_cmd->add.p_fmt );
1246 static void CmdCleanAdd( ts_cmd_t *p_cmd )
1248 es_format_Clean( p_cmd->add.p_fmt );
1249 free( p_cmd->add.p_fmt );
1252 static void CmdInitSend( ts_cmd_t *p_cmd, es_out_id_t *p_es, block_t *p_block )
1254 p_cmd->i_type = C_SEND;
1255 p_cmd->i_date = mdate();
1256 p_cmd->send.p_es = p_es;
1257 p_cmd->send.p_block = p_block;
1259 static int CmdExecuteSend( es_out_t *p_out, ts_cmd_t *p_cmd )
1261 block_t *p_block = p_cmd->send.p_block;
1263 p_cmd->send.p_block = NULL;
1267 if( p_cmd->send.p_es->p_es )
1268 return es_out_Send( p_out, p_cmd->send.p_es->p_es, p_block );
1269 block_Release( p_block );
1271 return VLC_EGENERIC;
1273 static void CmdCleanSend( ts_cmd_t *p_cmd )
1275 if( p_cmd->send.p_block )
1276 block_Release( p_cmd->send.p_block );
1279 static int CmdInitDel( ts_cmd_t *p_cmd, es_out_id_t *p_es )
1281 p_cmd->i_type = C_DEL;
1282 p_cmd->i_date = mdate();
1283 p_cmd->del.p_es = p_es;
1286 static void CmdExecuteDel( es_out_t *p_out, ts_cmd_t *p_cmd )
1288 if( p_cmd->del.p_es->p_es )
1289 es_out_Del( p_out, p_cmd->del.p_es->p_es );
1290 free( p_cmd->del.p_es );
1293 static int CmdInitControl( ts_cmd_t *p_cmd, int i_query, va_list args, bool b_copy )
1295 p_cmd->i_type = C_CONTROL;
1296 p_cmd->i_date = mdate();
1297 p_cmd->control.i_query = i_query;
1301 /* Pass-through control */
1302 case ES_OUT_SET_ACTIVE: /* arg1= bool */
1303 p_cmd->control.b_bool = (bool)va_arg( args, int );
1306 case ES_OUT_SET_MODE: /* arg1= int */
1307 case ES_OUT_SET_GROUP: /* arg1= int */
1308 case ES_OUT_DEL_GROUP: /* arg1=int i_group */
1309 p_cmd->control.i_int = (int)va_arg( args, int );
1312 case ES_OUT_SET_PCR: /* arg1=int64_t i_pcr(microsecond!) (using default group 0)*/
1313 case ES_OUT_SET_NEXT_DISPLAY_TIME: /* arg1=int64_t i_pts(microsecond) */
1314 p_cmd->control.i_i64 = (int64_t)va_arg( args, int64_t );
1317 case ES_OUT_SET_GROUP_PCR: /* arg1= int i_group, arg2=int64_t i_pcr(microsecond!)*/
1318 p_cmd->control.int_i64.i_int = (int)va_arg( args, int );
1319 p_cmd->control.int_i64.i_i64 = (int64_t)va_arg( args, int64_t );
1322 case ES_OUT_RESET_PCR: /* no arg */
1325 case ES_OUT_SET_GROUP_META: /* arg1=int i_group arg2=vlc_meta_t* */
1327 p_cmd->control.int_meta.i_int = (int)va_arg( args, int );
1328 vlc_meta_t *p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t * );
1332 p_cmd->control.int_meta.p_meta = vlc_meta_New();
1333 if( !p_cmd->control.int_meta.p_meta )
1334 return VLC_EGENERIC;
1335 vlc_meta_Merge( p_cmd->control.int_meta.p_meta, p_meta );
1339 p_cmd->control.int_meta.p_meta = p_meta;
1344 case ES_OUT_SET_GROUP_EPG: /* arg1=int i_group arg2=vlc_epg_t* */
1346 p_cmd->control.int_epg.i_int = (int)va_arg( args, int );
1347 vlc_epg_t *p_epg = (vlc_epg_t*)va_arg( args, vlc_epg_t * );
1351 p_cmd->control.int_epg.p_epg = vlc_epg_New( p_epg->psz_name );
1352 if( !p_cmd->control.int_epg.p_epg )
1353 return VLC_EGENERIC;
1354 for( int i = 0; i < p_epg->i_event; i++ )
1356 vlc_epg_event_t *p_evt = p_epg->pp_event[i];
1358 vlc_epg_AddEvent( p_cmd->control.int_epg.p_epg,
1359 p_evt->i_start, p_evt->i_duration,
1361 p_evt->psz_short_description, p_evt->psz_description );
1363 vlc_epg_SetCurrent( p_cmd->control.int_epg.p_epg,
1364 p_epg->p_current ? p_epg->p_current->i_start : -1 );
1368 p_cmd->control.int_epg.p_epg = p_epg;
1373 /* Modified control */
1374 case ES_OUT_SET_ES: /* arg1= es_out_id_t* */
1375 case ES_OUT_RESTART_ES: /* arg1= es_out_id_t* */
1376 case ES_OUT_SET_ES_DEFAULT: /* arg1= es_out_id_t* */
1377 p_cmd->control.p_es = (es_out_id_t*)va_arg( args, es_out_id_t * );
1380 case ES_OUT_SET_ES_STATE:/* arg1= es_out_id_t* arg2=bool */
1381 p_cmd->control.es_bool.p_es = (es_out_id_t*)va_arg( args, es_out_id_t * );
1382 p_cmd->control.es_bool.b_bool = (bool)va_arg( args, int );
1385 case ES_OUT_SET_ES_FMT: /* arg1= es_out_id_t* arg2=es_format_t* */
1387 p_cmd->control.es_fmt.p_es = (es_out_id_t*)va_arg( args, es_out_id_t * );
1388 es_format_t *p_fmt = (es_format_t*)va_arg( args, es_format_t * );
1392 p_cmd->control.es_fmt.p_fmt = malloc( sizeof(*p_fmt) );
1393 if( !p_cmd->control.es_fmt.p_fmt )
1394 return VLC_EGENERIC;
1395 es_format_Copy( p_cmd->control.es_fmt.p_fmt, p_fmt );
1399 p_cmd->control.es_fmt.p_fmt = p_fmt;
1406 return VLC_EGENERIC;
1411 static int CmdExecuteControl( es_out_t *p_out, ts_cmd_t *p_cmd )
1413 const int i_query = p_cmd->control.i_query;
1417 /* Pass-through control */
1418 case ES_OUT_SET_ACTIVE: /* arg1= bool */
1419 return es_out_Control( p_out, i_query, p_cmd->control.b_bool );
1421 case ES_OUT_SET_MODE: /* arg1= int */
1422 case ES_OUT_SET_GROUP: /* arg1= int */
1423 case ES_OUT_DEL_GROUP: /* arg1=int i_group */
1424 return es_out_Control( p_out, i_query, p_cmd->control.i_int );
1426 case ES_OUT_SET_PCR: /* arg1=int64_t i_pcr(microsecond!) (using default group 0)*/
1427 case ES_OUT_SET_NEXT_DISPLAY_TIME: /* arg1=int64_t i_pts(microsecond) */
1428 return es_out_Control( p_out, i_query, p_cmd->control.i_i64 );
1430 case ES_OUT_SET_GROUP_PCR: /* arg1= int i_group, arg2=int64_t i_pcr(microsecond!)*/
1431 return es_out_Control( p_out, i_query, p_cmd->control.int_i64.i_int, p_cmd->control.int_i64.i_i64 );
1433 case ES_OUT_RESET_PCR: /* no arg */
1434 return es_out_Control( p_out, i_query );
1436 case ES_OUT_SET_GROUP_META: /* arg1=int i_group arg2=vlc_meta_t* */
1437 return es_out_Control( p_out, i_query, p_cmd->control.int_meta.i_int, p_cmd->control.int_meta.p_meta );
1439 case ES_OUT_SET_GROUP_EPG: /* arg1=int i_group arg2=vlc_epg_t* */
1440 return es_out_Control( p_out, i_query, p_cmd->control.int_epg.i_int, p_cmd->control.int_epg.p_epg );
1442 /* Modified control */
1443 case ES_OUT_SET_ES: /* arg1= es_out_id_t* */
1444 case ES_OUT_RESTART_ES: /* arg1= es_out_id_t* */
1445 case ES_OUT_SET_ES_DEFAULT: /* arg1= es_out_id_t* */
1446 return es_out_Control( p_out, i_query, p_cmd->control.p_es->p_es );
1448 case ES_OUT_SET_ES_STATE:/* arg1= es_out_id_t* arg2=bool */
1449 return es_out_Control( p_out, i_query, p_cmd->control.es_bool.p_es->p_es, p_cmd->control.es_bool.b_bool );
1451 case ES_OUT_SET_ES_FMT: /* arg1= es_out_id_t* arg2=es_format_t* */
1452 return es_out_Control( p_out, i_query, p_cmd->control.es_fmt.p_es->p_es, p_cmd->control.es_fmt.p_fmt );
1456 return VLC_EGENERIC;
1459 static void CmdCleanControl( ts_cmd_t *p_cmd )
1461 if( p_cmd->control.i_query == ES_OUT_SET_GROUP_META &&
1462 p_cmd->control.int_meta.p_meta )
1464 vlc_meta_Delete( p_cmd->control.int_meta.p_meta );
1466 else if( p_cmd->control.i_query == ES_OUT_SET_GROUP_EPG &&
1467 p_cmd->control.int_epg.p_epg )
1469 vlc_epg_Delete( p_cmd->control.int_epg.p_epg );
1471 else if( p_cmd->control.i_query == ES_OUT_SET_ES_FMT &&
1472 p_cmd->control.es_fmt.p_fmt )
1474 es_format_Clean( p_cmd->control.es_fmt.p_fmt );
1475 free( p_cmd->control.es_fmt.p_fmt );
1480 /*****************************************************************************
1482 *****************************************************************************/
1483 static char *GetTmpPath( char *psz_path )
1485 if( psz_path && *psz_path )
1487 /* Make sure that the path exists and is a directory */
1489 const int i_ret = utf8_stat( psz_path, &s );
1491 if( i_ret < 0 && !utf8_mkdir( psz_path, 0600 ) )
1493 else if( i_ret == 0 && ( s.st_mode & S_IFDIR ) )
1498 /* Create a suitable path */
1499 #if defined (WIN32) && !defined (UNDER_CE)
1500 const DWORD dwCount = GetTempPathW( 0, NULL );
1501 wchar_t *psw_path = calloc( dwCount + 1, sizeof(wchar_t) );
1504 if( GetTempPathW( dwCount + 1, psw_path ) <= 0 )
1508 psw_path = _wgetcwd( NULL, 0 );
1515 psz_path = FromWide( psw_path );
1516 while( psz_path && *psz_path && psz_path[strlen( psz_path ) - 1] == '\\' )
1517 psz_path[strlen( psz_path ) - 1] = '\0';
1522 if( !psz_path || *psz_path == '\0' )
1525 return strdup( "C:" );
1528 psz_path = strdup( "/tmp" );
1534 static FILE *GetTmpFile( char **ppsz_file, const char *psz_path )
1542 if( asprintf( &psz_name, "%s/vlc-timeshift.XXXXXX", psz_path ) < 0 )
1546 fd = utf8_mkstemp( psz_name );
1547 *ppsz_file = psz_name;
1553 f = fdopen( fd, "rw+" );