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 *****************************************************************************/
40 #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
126 /* FIXME Really too big (double make the whole thing too big) */
134 mtime_t i_pts_jitter;
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 */
175 input_thread_t *p_input;
177 int64_t i_tmp_size_max;
178 const char *psz_tmp_path;
180 /* Lock for all following fields */
186 mtime_t i_pause_date;
192 mtime_t i_rate_delay;
195 mtime_t i_buffering_delay;
198 ts_storage_t *p_storage_r;
199 ts_storage_t *p_storage_w;
212 input_thread_t *p_input;
216 int64_t i_tmp_size_max; /* Maximal temporary file size in byte */
217 char *psz_tmp_path; /* Path for temporary files */
219 /* Lock for all following fields */
228 bool b_input_paused_source;
230 int i_input_rate_source;
237 static es_out_id_t *Add ( es_out_t *, const es_format_t * );
238 static int Send ( es_out_t *, es_out_id_t *, block_t * );
239 static void Del ( es_out_t *, es_out_id_t * );
240 static int Control( es_out_t *, int i_query, va_list );
241 static void Destroy( es_out_t * );
243 static int TsStart( es_out_t * );
244 static void TsAutoStop( es_out_t * );
246 static void TsStop( ts_thread_t * );
247 static void TsPushCmd( ts_thread_t *, ts_cmd_t * );
248 static int TsPopCmdLocked( ts_thread_t *, ts_cmd_t *, bool b_flush );
249 static bool TsHasCmd( ts_thread_t * );
250 static bool TsIsUnused( ts_thread_t * );
251 static int TsChangePause( ts_thread_t *, bool b_source_paused, bool b_paused, mtime_t i_date );
252 static int TsChangeRate( ts_thread_t *, int i_src_rate, int i_rate );
254 static void *TsRun( void * );
256 static ts_storage_t *TsStorageNew( const char *psz_path, int64_t i_tmp_size_max );
257 static void TsStorageDelete( ts_storage_t * );
258 static void TsStoragePack( ts_storage_t *p_storage );
259 static bool TsStorageIsFull( ts_storage_t *, const ts_cmd_t *p_cmd );
260 static bool TsStorageIsEmpty( ts_storage_t * );
261 static void TsStoragePushCmd( ts_storage_t *, const ts_cmd_t *p_cmd, bool b_flush );
262 static void TsStoragePopCmd( ts_storage_t *p_storage, ts_cmd_t *p_cmd, bool b_flush );
264 static void CmdClean( ts_cmd_t * );
265 static void cmd_cleanup_routine( void *p ) { CmdClean( p ); }
267 static int CmdInitAdd ( ts_cmd_t *, es_out_id_t *, const es_format_t *, bool b_copy );
268 static void CmdInitSend ( ts_cmd_t *, es_out_id_t *, block_t * );
269 static int CmdInitDel ( ts_cmd_t *, es_out_id_t * );
270 static int CmdInitControl( ts_cmd_t *, int i_query, va_list, bool b_copy );
273 static void CmdCleanAdd ( ts_cmd_t * );
274 static void CmdCleanSend ( ts_cmd_t * );
275 static void CmdCleanControl( ts_cmd_t *p_cmd );
277 /* XXX these functions will take the destination es_out_t */
278 static void CmdExecuteAdd ( es_out_t *, ts_cmd_t * );
279 static int CmdExecuteSend ( es_out_t *, ts_cmd_t * );
280 static void CmdExecuteDel ( es_out_t *, ts_cmd_t * );
281 static int CmdExecuteControl( es_out_t *, ts_cmd_t * );
284 static char *GetTmpPath( char *psz_path );
285 static FILE *GetTmpFile( char **ppsz_file, const char *psz_path );
287 /*****************************************************************************
288 * input_EsOutTimeshiftNew:
289 *****************************************************************************/
290 es_out_t *input_EsOutTimeshiftNew( input_thread_t *p_input, es_out_t *p_next_out, int i_rate )
292 es_out_t *p_out = malloc( sizeof(*p_out) );
296 es_out_sys_t *p_sys = malloc( sizeof(*p_sys) );
305 p_out->pf_send = Send;
307 p_out->pf_control = Control;
308 p_out->pf_destroy = Destroy;
309 p_out->p_sys = p_sys;
312 p_sys->b_input_paused = false;
313 p_sys->b_input_paused_source = false;
314 p_sys->p_input = p_input;
315 p_sys->i_input_rate = i_rate;
316 p_sys->i_input_rate_source = i_rate;
318 p_sys->p_out = p_next_out;
319 vlc_mutex_init_recursive( &p_sys->lock );
321 p_sys->b_delayed = false;
324 TAB_INIT( p_sys->i_es, p_sys->pp_es );
327 const int i_tmp_size_max = var_CreateGetInteger( p_input, "input-timeshift-granularity" );
328 if( i_tmp_size_max < 0 )
329 p_sys->i_tmp_size_max = 50*1024*1024;
331 p_sys->i_tmp_size_max = __MAX( i_tmp_size_max, 1*1024*1024 );
333 char *psz_tmp_path = var_CreateGetNonEmptyString( p_input, "input-timeshift-path" );
334 p_sys->psz_tmp_path = GetTmpPath( psz_tmp_path );
336 msg_Dbg( p_input, "using timeshift granularity of %d MiB, in path '%s'",
337 (int)p_sys->i_tmp_size_max/(1024*1024), p_sys->psz_tmp_path );
340 #define S(t) msg_Err( p_input, "SIZEOF("#t")=%d", sizeof(t) )
352 /*****************************************************************************
354 *****************************************************************************/
355 static void Destroy( es_out_t *p_out )
357 es_out_sys_t *p_sys = p_out->p_sys;
359 if( p_sys->b_delayed )
361 TsStop( p_sys->p_ts );
362 p_sys->b_delayed = false;
365 while( p_sys->i_es > 0 )
366 Del( p_out, p_sys->pp_es[0] );
367 TAB_CLEAN( p_sys->i_es, p_sys->pp_es );
369 free( p_sys->psz_tmp_path );
370 vlc_mutex_destroy( &p_sys->lock );
375 static es_out_id_t *Add( es_out_t *p_out, const es_format_t *p_fmt )
377 es_out_sys_t *p_sys = p_out->p_sys;
380 es_out_id_t *p_es = malloc( sizeof( *p_es ) );
384 vlc_mutex_lock( &p_sys->lock );
388 if( CmdInitAdd( &cmd, p_es, p_fmt, p_sys->b_delayed ) )
390 vlc_mutex_unlock( &p_sys->lock );
395 TAB_APPEND( p_sys->i_es, p_sys->pp_es, p_es );
397 if( p_sys->b_delayed )
398 TsPushCmd( p_sys->p_ts, &cmd );
400 CmdExecuteAdd( p_sys->p_out, &cmd );
402 vlc_mutex_unlock( &p_sys->lock );
406 static int Send( es_out_t *p_out, es_out_id_t *p_es, block_t *p_block )
408 es_out_sys_t *p_sys = p_out->p_sys;
410 int i_ret = VLC_SUCCESS;
412 vlc_mutex_lock( &p_sys->lock );
416 CmdInitSend( &cmd, p_es, p_block );
417 if( p_sys->b_delayed )
418 TsPushCmd( p_sys->p_ts, &cmd );
420 i_ret = CmdExecuteSend( p_sys->p_out, &cmd) ;
422 vlc_mutex_unlock( &p_sys->lock );
426 static void Del( es_out_t *p_out, es_out_id_t *p_es )
428 es_out_sys_t *p_sys = p_out->p_sys;
431 vlc_mutex_lock( &p_sys->lock );
435 CmdInitDel( &cmd, p_es );
436 if( p_sys->b_delayed )
437 TsPushCmd( p_sys->p_ts, &cmd );
439 CmdExecuteDel( p_sys->p_out, &cmd );
441 TAB_REMOVE( p_sys->i_es, p_sys->pp_es, p_es );
443 vlc_mutex_unlock( &p_sys->lock );
446 static int ControlLockedGetEmpty( es_out_t *p_out, bool *pb_empty )
448 es_out_sys_t *p_sys = p_out->p_sys;
450 if( p_sys->b_delayed && TsHasCmd( p_sys->p_ts ) )
453 *pb_empty = es_out_GetEmpty( p_sys->p_out );
457 static int ControlLockedGetWakeup( es_out_t *p_out, mtime_t *pi_wakeup )
459 es_out_sys_t *p_sys = p_out->p_sys;
461 if( p_sys->b_delayed )
463 assert( !p_sys->p_input->p->b_can_pace_control );
468 *pi_wakeup = es_out_GetWakeup( p_sys->p_out );
473 static int ControlLockedGetBuffering( es_out_t *p_out, bool *pb_buffering )
475 es_out_sys_t *p_sys = p_out->p_sys;
477 if( p_sys->b_delayed )
478 *pb_buffering = true;
480 *pb_buffering = es_out_GetBuffering( p_sys->p_out );
484 static int ControlLockedSetPauseState( es_out_t *p_out, bool b_source_paused, bool b_paused, mtime_t i_date )
486 es_out_sys_t *p_sys = p_out->p_sys;
489 if( !p_sys->b_delayed && !b_source_paused == !b_paused )
491 i_ret = es_out_SetPauseState( p_sys->p_out, b_source_paused, b_paused, i_date );
495 i_ret = VLC_EGENERIC;
496 if( !p_sys->p_input->p->b_can_pace_control )
498 if( !p_sys->b_delayed )
500 if( p_sys->b_delayed )
501 i_ret = TsChangePause( p_sys->p_ts, b_source_paused, b_paused, i_date );
505 /* XXX we may do it BUT it would be better to finish the clock clean up+improvments
506 * and so be able to advertize correctly pace control property in access
508 msg_Err( p_sys->p_input, "EsOutTimeshift does not work with streams that have pace control" );
514 p_sys->b_input_paused_source = b_source_paused;
515 p_sys->b_input_paused = b_paused;
519 static int ControlLockedSetRate( es_out_t *p_out, int i_src_rate, int i_rate )
521 es_out_sys_t *p_sys = p_out->p_sys;
524 if( !p_sys->b_delayed && i_src_rate == i_rate )
526 i_ret = es_out_SetRate( p_sys->p_out, i_src_rate, i_rate );
530 i_ret = VLC_EGENERIC;
531 if( !p_sys->p_input->p->b_can_pace_control )
533 if( !p_sys->b_delayed )
535 if( p_sys->b_delayed )
536 i_ret = TsChangeRate( p_sys->p_ts, i_src_rate, i_rate );
540 /* XXX we may do it BUT it would be better to finish the clock clean up+improvments
541 * and so be able to advertize correctly pace control property in access
543 msg_Err( p_sys->p_input, "EsOutTimeshift does not work with streams that have pace control" );
550 p_sys->i_input_rate_source = i_src_rate;
551 p_sys->i_input_rate = i_rate;
555 static int ControlLockedSetTime( es_out_t *p_out, mtime_t i_date )
557 es_out_sys_t *p_sys = p_out->p_sys;
559 if( !p_sys->b_delayed )
560 return es_out_SetTime( p_sys->p_out, i_date );
563 msg_Err( p_sys->p_input, "EsOutTimeshift does not yet support time change" );
566 static int ControlLockedSetFrameNext( es_out_t *p_out )
568 es_out_sys_t *p_sys = p_out->p_sys;
570 return es_out_SetFrameNext( p_sys->p_out );
573 static int ControlLocked( es_out_t *p_out, int i_query, va_list args )
575 es_out_sys_t *p_sys = p_out->p_sys;
579 /* Invalid query for this es_out level */
580 case ES_OUT_SET_ES_BY_ID:
581 case ES_OUT_RESTART_ES_BY_ID:
582 case ES_OUT_SET_ES_DEFAULT_BY_ID:
583 case ES_OUT_GET_ES_OBJECTS_BY_ID:
584 case ES_OUT_SET_DELAY:
585 case ES_OUT_SET_RECORD_STATE:
589 /* Pass-through control */
590 case ES_OUT_SET_MODE:
591 case ES_OUT_SET_GROUP:
593 case ES_OUT_SET_GROUP_PCR:
594 case ES_OUT_RESET_PCR:
595 case ES_OUT_SET_NEXT_DISPLAY_TIME:
596 case ES_OUT_SET_GROUP_META:
597 case ES_OUT_SET_GROUP_EPG:
598 case ES_OUT_SET_ES_SCRAMBLED_STATE:
599 case ES_OUT_DEL_GROUP:
600 case ES_OUT_SET_META:
602 case ES_OUT_RESTART_ES:
603 case ES_OUT_SET_ES_DEFAULT:
604 case ES_OUT_SET_ES_STATE:
605 case ES_OUT_SET_ES_FMT:
606 case ES_OUT_SET_TIMES:
607 case ES_OUT_SET_JITTER:
611 if( CmdInitControl( &cmd, i_query, args, p_sys->b_delayed ) )
613 if( p_sys->b_delayed )
615 TsPushCmd( p_sys->p_ts, &cmd );
618 return CmdExecuteControl( p_sys->p_out, &cmd );
621 /* Special control when delayed */
622 case ES_OUT_GET_ES_STATE:
624 es_out_id_t *p_es = (es_out_id_t*)va_arg( args, es_out_id_t * );
625 bool *pb_enabled = (bool*)va_arg( args, bool* );
627 if( p_sys->b_delayed )
632 return es_out_Control( p_sys->p_out, ES_OUT_GET_ES_STATE, p_es->p_es, pb_enabled );
634 /* Special internal input control */
635 case ES_OUT_GET_EMPTY:
637 bool *pb_empty = (bool*)va_arg( args, bool* );
638 return ControlLockedGetEmpty( p_out, pb_empty );
640 case ES_OUT_GET_WAKE_UP: /* TODO ? */
642 mtime_t *pi_wakeup = (mtime_t*)va_arg( args, mtime_t* );
643 return ControlLockedGetWakeup( p_out, pi_wakeup );
645 case ES_OUT_GET_BUFFERING:
647 bool *pb_buffering = (bool *)va_arg( args, bool* );
648 return ControlLockedGetBuffering( p_out, pb_buffering );
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 );
675 case ES_OUT_GET_PCR_SYSTEM:
677 if( p_sys->b_delayed )
680 mtime_t *pi_system = (mtime_t*)va_arg( args, mtime_t * );
681 mtime_t *pi_delay = (mtime_t*)va_arg( args, mtime_t * );
682 return es_out_ControlGetPcrSystem( p_sys->p_out, pi_system, pi_delay );
684 case ES_OUT_MODIFY_PCR_SYSTEM:
686 const bool b_absolute = va_arg( args, int );
687 const mtime_t i_system = va_arg( args, mtime_t );
689 if( b_absolute && p_sys->b_delayed )
692 return es_out_ControlModifyPcrSystem( p_sys->p_out, b_absolute, i_system );
694 case ES_OUT_GET_GROUP_FORCED:
696 int *pi_group = va_arg( args, int * );
697 return es_out_Control( p_sys->p_out, ES_OUT_GET_GROUP_FORCED, pi_group );
702 msg_Err( p_sys->p_input, "Unknown es_out_Control query !" );
707 static int Control( es_out_t *p_out, int i_query, va_list args )
709 es_out_sys_t *p_sys = p_out->p_sys;
712 vlc_mutex_lock( &p_sys->lock );
716 i_ret = ControlLocked( p_out, i_query, args );
718 vlc_mutex_unlock( &p_sys->lock );
723 /*****************************************************************************
725 *****************************************************************************/
726 static void TsDestroy( ts_thread_t *p_ts )
728 vlc_cond_destroy( &p_ts->wait );
729 vlc_mutex_destroy( &p_ts->lock );
732 static int TsStart( es_out_t *p_out )
734 es_out_sys_t *p_sys = p_out->p_sys;
737 assert( !p_sys->b_delayed );
739 p_sys->p_ts = p_ts = calloc(1, sizeof(*p_ts));
743 p_ts->i_tmp_size_max = p_sys->i_tmp_size_max;
744 p_ts->psz_tmp_path = p_sys->psz_tmp_path;
745 p_ts->p_input = p_sys->p_input;
746 p_ts->p_out = p_sys->p_out;
747 vlc_mutex_init( &p_ts->lock );
748 vlc_cond_init( &p_ts->wait );
749 p_ts->b_paused = p_sys->b_input_paused && !p_sys->b_input_paused_source;
750 p_ts->i_pause_date = p_ts->b_paused ? mdate() : -1;
751 p_ts->i_rate_source = p_sys->i_input_rate_source;
752 p_ts->i_rate = p_sys->i_input_rate;
753 p_ts->i_rate_date = -1;
754 p_ts->i_rate_delay = 0;
755 p_ts->i_buffering_delay = 0;
756 p_ts->i_cmd_delay = 0;
757 p_ts->p_storage_r = NULL;
758 p_ts->p_storage_w = NULL;
760 p_sys->b_delayed = true;
761 if( vlc_clone( &p_ts->thread, TsRun, p_ts, VLC_THREAD_PRIORITY_INPUT ) )
763 msg_Err( p_sys->p_input, "cannot create timeshift thread" );
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_ts ) )
780 msg_Warn( p_sys->p_input, "es out timeshift: auto stop" );
781 TsStop( p_sys->p_ts );
783 p_sys->b_delayed = false;
785 static void TsStop( ts_thread_t *p_ts )
787 vlc_cancel( p_ts->thread );
788 vlc_join( p_ts->thread, NULL );
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 );
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( void *p_data )
937 ts_thread_t *p_ts = p_data;
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 = vlc_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 KiB\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 vlc_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_nb_samples = block.i_nb_samples;
1194 p_block->i_buffer = fread( p_block->p_buffer, 1, block.i_buffer, p_storage->p_filer );
1196 p_cmd->u.send.p_block = p_block;
1200 //perror( "TsStoragePopCmd" );
1201 p_cmd->u.send.p_block = block_Alloc( 1 );
1206 /*****************************************************************************
1208 *****************************************************************************/
1209 static void CmdClean( ts_cmd_t *p_cmd )
1211 switch( p_cmd->i_type )
1214 CmdCleanAdd( p_cmd );
1217 CmdCleanSend( p_cmd );
1220 CmdCleanControl( p_cmd );
1230 static int CmdInitAdd( ts_cmd_t *p_cmd, es_out_id_t *p_es, const es_format_t *p_fmt, bool b_copy )
1232 p_cmd->i_type = C_ADD;
1233 p_cmd->i_date = mdate();
1234 p_cmd->u.add.p_es = p_es;
1237 p_cmd->u.add.p_fmt = malloc( sizeof(*p_fmt) );
1238 if( !p_cmd->u.add.p_fmt )
1239 return VLC_EGENERIC;
1240 es_format_Copy( p_cmd->u.add.p_fmt, p_fmt );
1244 p_cmd->u.add.p_fmt = (es_format_t*)p_fmt;
1248 static void CmdExecuteAdd( es_out_t *p_out, ts_cmd_t *p_cmd )
1250 p_cmd->u.add.p_es->p_es = es_out_Add( p_out, p_cmd->u.add.p_fmt );
1252 static void CmdCleanAdd( ts_cmd_t *p_cmd )
1254 es_format_Clean( p_cmd->u.add.p_fmt );
1255 free( p_cmd->u.add.p_fmt );
1258 static void CmdInitSend( ts_cmd_t *p_cmd, es_out_id_t *p_es, block_t *p_block )
1260 p_cmd->i_type = C_SEND;
1261 p_cmd->i_date = mdate();
1262 p_cmd->u.send.p_es = p_es;
1263 p_cmd->u.send.p_block = p_block;
1265 static int CmdExecuteSend( es_out_t *p_out, ts_cmd_t *p_cmd )
1267 block_t *p_block = p_cmd->u.send.p_block;
1269 p_cmd->u.send.p_block = NULL;
1273 if( p_cmd->u.send.p_es->p_es )
1274 return es_out_Send( p_out, p_cmd->u.send.p_es->p_es, p_block );
1275 block_Release( p_block );
1277 return VLC_EGENERIC;
1279 static void CmdCleanSend( ts_cmd_t *p_cmd )
1281 if( p_cmd->u.send.p_block )
1282 block_Release( p_cmd->u.send.p_block );
1285 static int CmdInitDel( ts_cmd_t *p_cmd, es_out_id_t *p_es )
1287 p_cmd->i_type = C_DEL;
1288 p_cmd->i_date = mdate();
1289 p_cmd->u.del.p_es = p_es;
1292 static void CmdExecuteDel( es_out_t *p_out, ts_cmd_t *p_cmd )
1294 if( p_cmd->u.del.p_es->p_es )
1295 es_out_Del( p_out, p_cmd->u.del.p_es->p_es );
1296 free( p_cmd->u.del.p_es );
1299 static int CmdInitControl( ts_cmd_t *p_cmd, int i_query, va_list args, bool b_copy )
1301 p_cmd->i_type = C_CONTROL;
1302 p_cmd->i_date = mdate();
1303 p_cmd->u.control.i_query = i_query;
1307 /* Pass-through control */
1308 case ES_OUT_SET_MODE: /* arg1= int */
1309 case ES_OUT_SET_GROUP: /* arg1= int */
1310 case ES_OUT_DEL_GROUP: /* arg1=int i_group */
1311 p_cmd->u.control.u.i_int = (int)va_arg( args, int );
1314 case ES_OUT_SET_PCR: /* arg1=int64_t i_pcr(microsecond!) (using default group 0)*/
1315 case ES_OUT_SET_NEXT_DISPLAY_TIME: /* arg1=int64_t i_pts(microsecond) */
1316 p_cmd->u.control.u.i_i64 = (int64_t)va_arg( args, int64_t );
1319 case ES_OUT_SET_GROUP_PCR: /* arg1= int i_group, arg2=int64_t i_pcr(microsecond!)*/
1320 p_cmd->u.control.u.int_i64.i_int = (int)va_arg( args, int );
1321 p_cmd->u.control.u.int_i64.i_i64 = (int64_t)va_arg( args, int64_t );
1324 case ES_OUT_SET_ES_SCRAMBLED_STATE:
1325 p_cmd->u.control.u.es_bool.p_es = (es_out_id_t*)va_arg( args, es_out_id_t * );
1326 p_cmd->u.control.u.es_bool.b_bool = (bool)va_arg( args, int );
1329 case ES_OUT_RESET_PCR: /* no arg */
1330 case ES_OUT_SET_EOS:
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,
1373 p_evt->psz_description, 0 );
1375 vlc_epg_SetCurrent( p_cmd->u.control.u.int_epg.p_epg,
1376 p_epg->p_current ? p_epg->p_current->i_start : -1 );
1380 /* The cast is only needed to avoid warning */
1381 p_cmd->u.control.u.int_epg.p_epg = (vlc_epg_t*)p_epg;
1386 /* Modified control */
1387 case ES_OUT_SET_ES: /* arg1= es_out_id_t* */
1388 case ES_OUT_RESTART_ES: /* arg1= es_out_id_t* */
1389 case ES_OUT_SET_ES_DEFAULT: /* arg1= es_out_id_t* */
1390 p_cmd->u.control.u.p_es = (es_out_id_t*)va_arg( args, es_out_id_t * );
1393 case ES_OUT_SET_ES_STATE:/* arg1= es_out_id_t* arg2=bool */
1394 p_cmd->u.control.u.es_bool.p_es = (es_out_id_t*)va_arg( args, es_out_id_t * );
1395 p_cmd->u.control.u.es_bool.b_bool = (bool)va_arg( args, int );
1398 case ES_OUT_SET_ES_FMT: /* arg1= es_out_id_t* arg2=es_format_t* */
1400 p_cmd->u.control.u.es_fmt.p_es = (es_out_id_t*)va_arg( args, es_out_id_t * );
1401 es_format_t *p_fmt = (es_format_t*)va_arg( args, es_format_t * );
1405 p_cmd->u.control.u.es_fmt.p_fmt = malloc( sizeof(*p_fmt) );
1406 if( !p_cmd->u.control.u.es_fmt.p_fmt )
1407 return VLC_EGENERIC;
1408 es_format_Copy( p_cmd->u.control.u.es_fmt.p_fmt, p_fmt );
1412 p_cmd->u.control.u.es_fmt.p_fmt = p_fmt;
1416 case ES_OUT_SET_TIMES:
1418 double f_position = (double)va_arg( args, double );
1419 mtime_t i_time = (mtime_t)va_arg( args, mtime_t );
1420 mtime_t i_length = (mtime_t)va_arg( args, mtime_t );
1422 p_cmd->u.control.u.times.f_position = f_position;
1423 p_cmd->u.control.u.times.i_time = i_time;
1424 p_cmd->u.control.u.times.i_length = i_length;
1427 case ES_OUT_SET_JITTER:
1429 mtime_t i_pts_delay = (mtime_t)va_arg( args, mtime_t );
1430 mtime_t i_pts_jitter = (mtime_t)va_arg( args, mtime_t );
1431 int i_cr_average = (int)va_arg( args, int );
1433 p_cmd->u.control.u.jitter.i_pts_delay = i_pts_delay;
1434 p_cmd->u.control.u.jitter.i_pts_jitter = i_pts_jitter;
1435 p_cmd->u.control.u.jitter.i_cr_average = i_cr_average;
1441 return VLC_EGENERIC;
1446 static int CmdExecuteControl( es_out_t *p_out, ts_cmd_t *p_cmd )
1448 const int i_query = p_cmd->u.control.i_query;
1452 /* Pass-through control */
1453 case ES_OUT_SET_MODE: /* arg1= int */
1454 case ES_OUT_SET_GROUP: /* arg1= int */
1455 case ES_OUT_DEL_GROUP: /* arg1=int i_group */
1456 return es_out_Control( p_out, i_query, p_cmd->u.control.u.i_int );
1458 case ES_OUT_SET_PCR: /* arg1=int64_t i_pcr(microsecond!) (using default group 0)*/
1459 case ES_OUT_SET_NEXT_DISPLAY_TIME: /* arg1=int64_t i_pts(microsecond) */
1460 return es_out_Control( p_out, i_query, p_cmd->u.control.u.i_i64 );
1462 case ES_OUT_SET_GROUP_PCR: /* arg1= int i_group, arg2=int64_t i_pcr(microsecond!)*/
1463 return es_out_Control( p_out, i_query, p_cmd->u.control.u.int_i64.i_int,
1464 p_cmd->u.control.u.int_i64.i_i64 );
1466 case ES_OUT_RESET_PCR: /* no arg */
1467 case ES_OUT_SET_EOS:
1468 return es_out_Control( p_out, i_query );
1470 case ES_OUT_SET_GROUP_META: /* arg1=int i_group arg2=const vlc_meta_t* */
1471 return es_out_Control( p_out, i_query, p_cmd->u.control.u.int_meta.i_int,
1472 p_cmd->u.control.u.int_meta.p_meta );
1474 case ES_OUT_SET_GROUP_EPG: /* arg1=int i_group arg2=const vlc_epg_t* */
1475 return es_out_Control( p_out, i_query, p_cmd->u.control.u.int_epg.i_int,
1476 p_cmd->u.control.u.int_epg.p_epg );
1478 case ES_OUT_SET_ES_SCRAMBLED_STATE: /* arg1=int es_out_id_t* arg2=bool */
1479 return es_out_Control( p_out, i_query, p_cmd->u.control.u.es_bool.p_es->p_es,
1480 p_cmd->u.control.u.es_bool.b_bool );
1482 case ES_OUT_SET_META: /* arg1=const vlc_meta_t* */
1483 return es_out_Control( p_out, i_query, p_cmd->u.control.u.int_meta.p_meta );
1485 /* Modified control */
1486 case ES_OUT_SET_ES: /* arg1= es_out_id_t* */
1487 case ES_OUT_RESTART_ES: /* arg1= es_out_id_t* */
1488 case ES_OUT_SET_ES_DEFAULT: /* arg1= es_out_id_t* */
1489 return es_out_Control( p_out, i_query, p_cmd->u.control.u.p_es->p_es );
1491 case ES_OUT_SET_ES_STATE:/* arg1= es_out_id_t* arg2=bool */
1492 return es_out_Control( p_out, i_query, p_cmd->u.control.u.es_bool.p_es->p_es,
1493 p_cmd->u.control.u.es_bool.b_bool );
1495 case ES_OUT_SET_ES_FMT: /* arg1= es_out_id_t* arg2=es_format_t* */
1496 return es_out_Control( p_out, i_query, p_cmd->u.control.u.es_fmt.p_es->p_es,
1497 p_cmd->u.control.u.es_fmt.p_fmt );
1499 case ES_OUT_SET_TIMES:
1500 return es_out_Control( p_out, i_query, p_cmd->u.control.u.times.f_position,
1501 p_cmd->u.control.u.times.i_time,
1502 p_cmd->u.control.u.times.i_length );
1503 case ES_OUT_SET_JITTER:
1504 return es_out_Control( p_out, i_query, p_cmd->u.control.u.jitter.i_pts_delay,
1505 p_cmd->u.control.u.jitter.i_pts_jitter,
1506 p_cmd->u.control.u.jitter.i_cr_average );
1510 return VLC_EGENERIC;
1513 static void CmdCleanControl( ts_cmd_t *p_cmd )
1515 if( ( p_cmd->u.control.i_query == ES_OUT_SET_GROUP_META ||
1516 p_cmd->u.control.i_query == ES_OUT_SET_META ) &&
1517 p_cmd->u.control.u.int_meta.p_meta )
1519 vlc_meta_Delete( p_cmd->u.control.u.int_meta.p_meta );
1521 else if( p_cmd->u.control.i_query == ES_OUT_SET_GROUP_EPG &&
1522 p_cmd->u.control.u.int_epg.p_epg )
1524 vlc_epg_Delete( p_cmd->u.control.u.int_epg.p_epg );
1526 else if( p_cmd->u.control.i_query == ES_OUT_SET_ES_FMT &&
1527 p_cmd->u.control.u.es_fmt.p_fmt )
1529 es_format_Clean( p_cmd->u.control.u.es_fmt.p_fmt );
1530 free( p_cmd->u.control.u.es_fmt.p_fmt );
1535 /*****************************************************************************
1537 *****************************************************************************/
1538 static char *GetTmpPath( char *psz_path )
1540 if( psz_path && *psz_path )
1542 /* Make sure that the path exists and is a directory */
1544 const int i_ret = vlc_stat( psz_path, &s );
1546 if( i_ret < 0 && !vlc_mkdir( psz_path, 0600 ) )
1548 else if( i_ret == 0 && ( s.st_mode & S_IFDIR ) )
1553 /* Create a suitable path */
1554 #if defined (_WIN32) && !VLC_WINSTORE_APP
1555 const DWORD dwCount = GetTempPathW( 0, NULL );
1556 wchar_t *psw_path = calloc( dwCount + 1, sizeof(wchar_t) );
1559 if( GetTempPathW( dwCount + 1, psw_path ) <= 0 )
1563 psw_path = _wgetcwd( NULL, 0 );
1570 psz_path = FromWide( psw_path );
1571 while( psz_path && *psz_path && psz_path[strlen( psz_path ) - 1] == '\\' )
1572 psz_path[strlen( psz_path ) - 1] = '\0';
1577 if( !psz_path || *psz_path == '\0' )
1580 return strdup( "C:" );
1583 psz_path = strdup( DIR_SEP"tmp" );
1589 static FILE *GetTmpFile( char **ppsz_file, const char *psz_path )
1597 if( asprintf( &psz_name, "%s/vlc-timeshift.XXXXXX", psz_path ) < 0 )
1601 fd = vlc_mkstemp( psz_name );
1602 *ppsz_file = psz_name;
1608 f = fdopen( fd, "w+b" );