1 /*****************************************************************************
2 * rpn.c : RPN evaluator for the HTTP Interface
3 *****************************************************************************
4 * Copyright (C) 2001-2006 the VideoLAN team
7 * Authors: Gildas Bazin <gbazin@netcourrier.com>
8 * Laurent Aimar <fenrir@via.ecp.fr>
9 * Christophe Massiot <massiot@via.ecp.fr>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
24 *****************************************************************************/
29 #include "vlc_strings.h"
31 static vlc_object_t *GetVLCObject( intf_thread_t *p_intf,
32 const char *psz_object,
33 vlc_bool_t *pb_need_release )
35 intf_sys_t *p_sys = p_intf->p_sys;
36 int i_object_type = 0;
37 vlc_object_t *p_object = NULL;
38 *pb_need_release = VLC_FALSE;
40 if( !strcmp( psz_object, "VLC_OBJECT_LIBVLC" ) )
41 p_object = VLC_OBJECT(p_intf->p_libvlc);
42 else if( !strcmp( psz_object, "VLC_OBJECT_INTF" ) )
43 p_object = VLC_OBJECT(p_intf);
44 else if( !strcmp( psz_object, "VLC_OBJECT_PLAYLIST" ) )
45 p_object = VLC_OBJECT(p_sys->p_playlist);
46 else if( !strcmp( psz_object, "VLC_OBJECT_INPUT" ) )
47 p_object = VLC_OBJECT(p_sys->p_input);
48 else if( !strcmp( psz_object, "VLC_OBJECT_VOUT" ) )
49 i_object_type = VLC_OBJECT_VOUT;
50 else if( !strcmp( psz_object, "VLC_OBJECT_AOUT" ) )
51 i_object_type = VLC_OBJECT_AOUT;
52 else if( !strcmp( psz_object, "VLC_OBJECT_SOUT" ) )
53 i_object_type = VLC_OBJECT_SOUT;
55 msg_Warn( p_intf, "unknown object type (%s)", psz_object );
57 if( p_object == NULL && i_object_type )
59 *pb_need_release = VLC_TRUE;
60 p_object = vlc_object_find( p_intf, i_object_type, FIND_ANYWHERE );
66 void E_(SSInit)( rpn_stack_t *st )
71 void E_(SSClean)( rpn_stack_t *st )
73 while( st->i_stack > 0 )
75 free( st->stack[--st->i_stack] );
79 void E_(SSPush)( rpn_stack_t *st, const char *s )
81 if( st->i_stack < STACK_MAX )
83 st->stack[st->i_stack++] = strdup( s );
87 char *E_(SSPop)( rpn_stack_t *st )
89 if( st->i_stack <= 0 )
95 return st->stack[--st->i_stack];
99 int E_(SSPopN)( rpn_stack_t *st, mvar_t *vars )
107 name = E_(SSPop)( st );
108 i = strtol( name, &end, 0 );
111 value = E_(mvar_GetValue)( vars, name );
119 void E_(SSPushN)( rpn_stack_t *st, int i )
123 snprintf( v, sizeof (v), "%d", i );
127 void E_(EvaluateRPN)( intf_thread_t *p_intf, mvar_t *vars,
128 rpn_stack_t *st, char *exp )
130 intf_sys_t *p_sys = p_intf->p_sys;
132 while( exp != NULL && *exp != '\0' )
145 p = E_(FirstWord)( exp, exp );
146 E_(SSPush)( st, exp );
152 p = E_(FirstWord)( exp, exp );
156 exp += strlen( exp );
168 /* 1. Integer function */
169 if( !strcmp( s, "!" ) )
171 E_(SSPushN)( st, ~E_(SSPopN)( st, vars ) );
173 else if( !strcmp( s, "^" ) )
175 E_(SSPushN)( st, E_(SSPopN)( st, vars ) ^ E_(SSPopN)( st, vars ) );
177 else if( !strcmp( s, "&" ) )
179 E_(SSPushN)( st, E_(SSPopN)( st, vars ) & E_(SSPopN)( st, vars ) );
181 else if( !strcmp( s, "|" ) )
183 E_(SSPushN)( st, E_(SSPopN)( st, vars ) | E_(SSPopN)( st, vars ) );
185 else if( !strcmp( s, "+" ) )
187 E_(SSPushN)( st, E_(SSPopN)( st, vars ) + E_(SSPopN)( st, vars ) );
189 else if( !strcmp( s, "-" ) )
191 int j = E_(SSPopN)( st, vars );
192 int i = E_(SSPopN)( st, vars );
193 E_(SSPushN)( st, i - j );
195 else if( !strcmp( s, "*" ) )
197 E_(SSPushN)( st, E_(SSPopN)( st, vars ) * E_(SSPopN)( st, vars ) );
199 else if( !strcmp( s, "/" ) )
203 j = E_(SSPopN)( st, vars );
204 i = E_(SSPopN)( st, vars );
206 E_(SSPushN)( st, j != 0 ? i / j : 0 );
208 else if( !strcmp( s, "%" ) )
212 j = E_(SSPopN)( st, vars );
213 i = E_(SSPopN)( st, vars );
215 E_(SSPushN)( st, j != 0 ? i % j : 0 );
217 /* 2. integer tests */
218 else if( !strcmp( s, "=" ) )
220 E_(SSPushN)( st, E_(SSPopN)( st, vars ) == E_(SSPopN)( st, vars ) ? -1 : 0 );
222 else if( !strcmp( s, "!=" ) )
224 E_(SSPushN)( st, E_(SSPopN)( st, vars ) != E_(SSPopN)( st, vars ) ? -1 : 0 );
226 else if( !strcmp( s, "<" ) )
228 int j = E_(SSPopN)( st, vars );
229 int i = E_(SSPopN)( st, vars );
231 E_(SSPushN)( st, i < j ? -1 : 0 );
233 else if( !strcmp( s, ">" ) )
235 int j = E_(SSPopN)( st, vars );
236 int i = E_(SSPopN)( st, vars );
238 E_(SSPushN)( st, i > j ? -1 : 0 );
240 else if( !strcmp( s, "<=" ) )
242 int j = E_(SSPopN)( st, vars );
243 int i = E_(SSPopN)( st, vars );
245 E_(SSPushN)( st, i <= j ? -1 : 0 );
247 else if( !strcmp( s, ">=" ) )
249 int j = E_(SSPopN)( st, vars );
250 int i = E_(SSPopN)( st, vars );
252 E_(SSPushN)( st, i >= j ? -1 : 0 );
254 /* 3. string functions */
255 else if( !strcmp( s, "strcat" ) )
257 char *s2 = E_(SSPop)( st );
258 char *s1 = E_(SSPop)( st );
259 char *str = malloc( strlen( s1 ) + strlen( s2 ) + 1 );
264 E_(SSPush)( st, str );
269 else if( !strcmp( s, "strcmp" ) )
271 char *s2 = E_(SSPop)( st );
272 char *s1 = E_(SSPop)( st );
274 E_(SSPushN)( st, strcmp( s1, s2 ) );
278 else if( !strcmp( s, "strncmp" ) )
280 int n = E_(SSPopN)( st, vars );
281 char *s2 = E_(SSPop)( st );
282 char *s1 = E_(SSPop)( st );
284 E_(SSPushN)( st, strncmp( s1, s2 , n ) );
288 else if( !strcmp( s, "strsub" ) )
290 int n = E_(SSPopN)( st, vars );
291 int m = E_(SSPopN)( st, vars );
293 char *s = E_(SSPop)( st );
305 str = malloc( i_len + 1 );
307 memcpy( str, s + m - 1, i_len );
310 E_(SSPush)( st, str );
314 else if( !strcmp( s, "strlen" ) )
316 char *str = E_(SSPop)( st );
318 E_(SSPushN)( st, strlen( str ) );
321 else if( !strcmp( s, "str_replace" ) )
323 char *psz_to = E_(SSPop)( st );
324 char *psz_from = E_(SSPop)( st );
325 char *psz_in = E_(SSPop)( st );
326 char *psz_in_current = psz_in;
327 char *psz_out = malloc( strlen(psz_in) * strlen(psz_to) + 1 );
328 char *psz_out_current = psz_out;
330 while( (p = strstr( psz_in_current, psz_from )) != NULL )
332 memcpy( psz_out_current, psz_in_current, p - psz_in_current );
333 psz_out_current += p - psz_in_current;
334 strcpy( psz_out_current, psz_to );
335 psz_out_current += strlen(psz_to);
336 psz_in_current = p + strlen(psz_from);
338 strcpy( psz_out_current, psz_in_current );
339 psz_out_current += strlen(psz_in_current);
340 *psz_out_current = '\0';
342 E_(SSPush)( st, psz_out );
348 else if( !strcmp( s, "url_extract" ) )
350 char *url = E_(mvar_GetValue)( vars, "url_value" );
351 char *name = E_(SSPop)( st );
355 E_(ExtractURIValue)( url, name, value, 512 );
357 tmp = E_(FromUTF8)( p_intf, value );
358 E_(SSPush)( st, tmp );
362 else if( !strcmp( s, "url_encode" ) )
364 char *url = E_(SSPop)( st );
367 value = E_(ToUTF8)( p_intf, url );
370 value = vlc_UrlEncode( url );
372 E_(SSPush)( st, value );
375 else if( !strcmp( s, "addslashes" ) )
377 char *psz_src = E_(SSPop)( st );
381 p = psz_dest = malloc( strlen( str ) * 2 + 1 );
383 while( *str != '\0' )
385 if( *str == '"' || *str == '\'' || *str == '\\' )
394 E_(SSPush)( st, psz_dest );
398 else if( !strcmp( s, "stripslashes" ) )
400 char *psz_src = E_(SSPop)( st );
404 p = psz_dest = strdup( psz_src );
408 if( *str == '\\' && *(str + 1) )
416 E_(SSPush)( st, psz_dest );
420 else if( !strcmp( s, "htmlspecialchars" ) )
422 char *psz_src = E_(SSPop)( st );
425 psz_dest = convert_xml_special_chars( psz_src );
427 E_(SSPush)( st, psz_dest );
431 else if( !strcmp( s, "realpath" ) )
433 char *psz_src = E_(SSPop)( st );
434 char *psz_dir = E_(RealPath)( p_intf, psz_src );
436 E_(SSPush)( st, psz_dir );
440 /* 4. stack functions */
441 else if( !strcmp( s, "dup" ) )
443 char *str = E_(SSPop)( st );
444 E_(SSPush)( st, str );
445 E_(SSPush)( st, str );
448 else if( !strcmp( s, "drop" ) )
450 char *str = E_(SSPop)( st );
453 else if( !strcmp( s, "swap" ) )
455 char *s1 = E_(SSPop)( st );
456 char *s2 = E_(SSPop)( st );
458 E_(SSPush)( st, s1 );
459 E_(SSPush)( st, s2 );
463 else if( !strcmp( s, "flush" ) )
468 else if( !strcmp( s, "store" ) )
470 char *value = E_(SSPop)( st );
471 char *name = E_(SSPop)( st );
473 E_(mvar_PushNewVar)( vars, name, value );
477 else if( !strcmp( s, "value" ) )
479 char *name = E_(SSPop)( st );
480 char *value = E_(mvar_GetValue)( vars, name );
482 E_(SSPush)( st, value );
486 /* 5. player control */
487 else if( !strcmp( s, "vlc_play" ) )
489 int i_id = E_(SSPopN)( st, vars );
492 i_ret = playlist_Control( p_sys->p_playlist, PLAYLIST_VIEWPLAY, VLC_TRUE,
494 playlist_ItemGetById( p_sys->p_playlist,
496 msg_Dbg( p_intf, "requested playlist item: %i", i_id );
497 E_(SSPushN)( st, i_ret );
499 else if( !strcmp( s, "vlc_stop" ) )
501 playlist_Control( p_sys->p_playlist, VLC_TRUE, PLAYLIST_STOP );
502 msg_Dbg( p_intf, "requested playlist stop" );
504 else if( !strcmp( s, "vlc_pause" ) )
506 playlist_Control( p_sys->p_playlist, VLC_TRUE, PLAYLIST_PAUSE );
507 msg_Dbg( p_intf, "requested playlist pause" );
509 else if( !strcmp( s, "vlc_next" ) )
511 playlist_Control( p_sys->p_playlist, VLC_TRUE, PLAYLIST_SKIP, 1 );
512 msg_Dbg( p_intf, "requested playlist next" );
514 else if( !strcmp( s, "vlc_previous" ) )
516 playlist_Control( p_sys->p_playlist, VLC_TRUE, PLAYLIST_SKIP, -1 );
517 msg_Dbg( p_intf, "requested playlist previous" );
519 else if( !strcmp( s, "vlc_seek" ) )
521 char *psz_value = E_(SSPop)( st );
522 E_(HandleSeek)( p_intf, psz_value );
523 msg_Dbg( p_intf, "requested playlist seek: %s", psz_value );
526 else if( !strcmp( s, "vlc_var_type" )
527 || !strcmp( s, "vlc_config_type" ) )
529 vlc_object_t *p_object;
530 const char *psz_type = NULL;
533 if( !strcmp( s, "vlc_var_type" ) )
535 char *psz_object = E_(SSPop)( st );
536 char *psz_variable = E_(SSPop)( st );
537 vlc_bool_t b_need_release;
539 p_object = GetVLCObject( p_intf, psz_object, &b_need_release );
541 if( p_object != NULL )
542 i_type = var_Type( p_object, psz_variable );
543 free( psz_variable );
545 if( b_need_release && p_object != NULL )
546 vlc_object_release( p_object );
550 char *psz_variable = E_(SSPop)( st );
551 p_object = VLC_OBJECT(p_intf);
552 i_type = config_GetType( p_object, psz_variable );
553 free( psz_variable );
556 if( p_object != NULL )
558 switch( i_type & VLC_VAR_TYPE )
561 psz_type = "VLC_VAR_BOOL";
563 case VLC_VAR_INTEGER:
564 psz_type = "VLC_VAR_INTEGER";
567 psz_type = "VLC_VAR_HOTKEY";
570 psz_type = "VLC_VAR_STRING";
573 psz_type = "VLC_VAR_MODULE";
576 psz_type = "VLC_VAR_FILE";
578 case VLC_VAR_DIRECTORY:
579 psz_type = "VLC_VAR_DIRECTORY";
581 case VLC_VAR_VARIABLE:
582 psz_type = "VLC_VAR_VARIABLE";
585 psz_type = "VLC_VAR_FLOAT";
588 psz_type = "UNDEFINED";
592 psz_type = "INVALID";
594 E_(SSPush)( st, psz_type );
596 else if( !strcmp( s, "vlc_var_set" ) )
598 char *psz_object = E_(SSPop)( st );
599 char *psz_variable = E_(SSPop)( st );
600 vlc_bool_t b_need_release;
602 vlc_object_t *p_object = GetVLCObject( p_intf, psz_object,
605 if( p_object != NULL )
607 vlc_bool_t b_error = VLC_FALSE;
608 char *psz_value = NULL;
612 i_type = var_Type( p_object, psz_variable );
614 switch( i_type & VLC_VAR_TYPE )
617 val.b_bool = E_(SSPopN)( st, vars );
618 msg_Dbg( p_intf, "requested %s var change: %s->%d",
619 psz_object, psz_variable, val.b_bool );
621 case VLC_VAR_INTEGER:
623 val.i_int = E_(SSPopN)( st, vars );
624 msg_Dbg( p_intf, "requested %s var change: %s->%d",
625 psz_object, psz_variable, val.i_int );
630 case VLC_VAR_DIRECTORY:
631 case VLC_VAR_VARIABLE:
632 val.psz_string = psz_value = E_(SSPop)( st );
633 msg_Dbg( p_intf, "requested %s var change: %s->%s",
634 psz_object, psz_variable, psz_value );
637 psz_value = E_(SSPop)( st );
638 val.f_float = atof( psz_value );
639 msg_Dbg( p_intf, "requested %s var change: %s->%f",
640 psz_object, psz_variable, val.f_float );
643 E_(SSPopN)( st, vars );
644 msg_Warn( p_intf, "invalid %s variable type %d (%s)",
645 psz_object, i_type & VLC_VAR_TYPE, psz_variable );
650 var_Set( p_object, psz_variable, val );
651 if( psz_value != NULL )
655 msg_Warn( p_intf, "vlc_var_set called without an object" );
656 free( psz_variable );
659 if( b_need_release && p_object != NULL )
660 vlc_object_release( p_object );
662 else if( !strcmp( s, "vlc_var_get" ) )
664 char *psz_object = E_(SSPop)( st );
665 char *psz_variable = E_(SSPop)( st );
666 vlc_bool_t b_need_release;
668 vlc_object_t *p_object = GetVLCObject( p_intf, psz_object,
671 if( p_object != NULL )
676 i_type = var_Type( p_object, psz_variable );
677 var_Get( p_object, psz_variable, &val );
679 switch( i_type & VLC_VAR_TYPE )
682 E_(SSPushN)( st, val.b_bool );
684 case VLC_VAR_INTEGER:
686 E_(SSPushN)( st, val.i_int );
691 case VLC_VAR_DIRECTORY:
692 case VLC_VAR_VARIABLE:
693 E_(SSPush)( st, val.psz_string );
694 free( val.psz_string );
699 lldiv_t value = lldiv( val.f_float * 1000000, 1000000 );
700 snprintf( psz_value, sizeof(psz_value), "%lld.%06u",
701 value.quot, (unsigned int)value.rem );
702 E_(SSPush)( st, psz_value );
706 msg_Warn( p_intf, "invalid %s variable type %d (%s)",
707 psz_object, i_type & VLC_VAR_TYPE, psz_variable );
708 E_(SSPush)( st, "" );
713 msg_Warn( p_intf, "vlc_var_get called without an object" );
714 E_(SSPush)( st, "" );
716 free( psz_variable );
719 if( b_need_release && p_object != NULL )
720 vlc_object_release( p_object );
722 else if( !strcmp( s, "vlc_object_exists" ) )
724 char *psz_object = E_(SSPop)( st );
725 vlc_bool_t b_need_release;
727 vlc_object_t *p_object = GetVLCObject( p_intf, psz_object,
729 if( b_need_release && p_object != NULL )
730 vlc_object_release( p_object );
732 if( p_object != NULL )
733 E_(SSPush)( st, "1" );
735 E_(SSPush)( st, "0" );
737 else if( !strcmp( s, "vlc_config_set" ) )
739 char *psz_variable = E_(SSPop)( st );
740 int i_type = config_GetType( p_intf, psz_variable );
742 switch( i_type & VLC_VAR_TYPE )
745 case VLC_VAR_INTEGER:
746 config_PutInt( p_intf, psz_variable, E_(SSPopN)( st, vars ) );
751 case VLC_VAR_DIRECTORY:
753 char *psz_string = E_(SSPop)( st );
754 config_PutPsz( p_intf, psz_variable, psz_string );
760 char *psz_string = E_(SSPop)( st );
761 config_PutFloat( p_intf, psz_variable, atof(psz_string) );
766 msg_Warn( p_intf, "vlc_config_set called on unknown var (%s)",
769 free( psz_variable );
771 else if( !strcmp( s, "vlc_config_get" ) )
773 char *psz_variable = E_(SSPop)( st );
774 int i_type = config_GetType( p_intf, psz_variable );
776 switch( i_type & VLC_VAR_TYPE )
779 case VLC_VAR_INTEGER:
780 E_(SSPushN)( st, config_GetInt( p_intf, psz_variable ) );
785 case VLC_VAR_DIRECTORY:
787 char *psz_string = config_GetPsz( p_intf, psz_variable );
788 E_(SSPush)( st, psz_string );
795 lldiv_t value = lldiv( config_GetFloat( p_intf, psz_variable )
796 * 1000000, 1000000 );
797 snprintf( psz_string, sizeof(psz_string), "%lld.%06u",
798 value.quot, (unsigned int)value.rem );
799 E_(SSPush)( st, psz_string );
803 msg_Warn( p_intf, "vlc_config_get called on unknown var (%s)",
806 free( psz_variable );
808 else if( !strcmp( s, "vlc_config_save" ) )
810 char *psz_module = E_(SSPop)( st );
818 i_result = config_SaveConfigFile( p_intf, psz_module );
820 if( psz_module != NULL )
822 E_(SSPushN)( st, i_result );
824 else if( !strcmp( s, "vlc_config_reset" ) )
826 config_ResetAll( p_intf );
828 /* 6. playlist functions */
829 else if( !strcmp( s, "playlist_add" ) )
831 char *psz_name = E_(SSPop)( st );
832 char *mrl = E_(SSPop)( st );
834 input_item_t *p_input;
837 tmp = E_(ToUTF8)( p_intf, psz_name );
840 tmp = E_(ToUTF8)( p_intf, mrl );
844 p_input = E_(MRLParse)( p_intf, mrl, psz_name );
846 if( !p_input || !p_input->psz_uri || !*p_input->psz_uri )
849 msg_Dbg( p_intf, "invalid requested mrl: %s", mrl );
853 i_id = playlist_AddInput( p_sys->p_playlist, p_input,
854 PLAYLIST_APPEND, PLAYLIST_END, VLC_TRUE,
856 msg_Dbg( p_intf, "requested mrl add: %s", mrl );
858 E_(SSPushN)( st, i_id );
863 else if( !strcmp( s, "playlist_empty" ) )
865 playlist_Clear( p_sys->p_playlist, VLC_FALSE );
866 msg_Dbg( p_intf, "requested playlist empty" );
868 else if( !strcmp( s, "playlist_delete" ) )
870 int i_id = E_(SSPopN)( st, vars );
871 playlist_DeleteFromInput( p_sys->p_playlist, i_id, VLC_FALSE );
872 msg_Dbg( p_intf, "requested playlist delete: %d", i_id );
874 else if( !strcmp( s, "playlist_move" ) )
876 /*int i_newpos =*/ E_(SSPopN)( st, vars );
877 /*int i_pos =*/ E_(SSPopN)( st, vars );
878 /* FIXME FIXME TODO TODO XXX XXX
879 do not release before fixing this
880 if ( i_pos < i_newpos )
882 playlist_Move( p_sys->p_playlist, i_pos, i_newpos + 1 );
886 playlist_Move( p_sys->p_playlist, i_pos, i_newpos );
888 msg_Dbg( p_intf, "requested to move playlist item %d to %d",
890 FIXME FIXME TODO TODO XXX XXX */
891 msg_Err( p_intf, "moving using indexes is obsolete. We need to update this function" );
893 else if( !strcmp( s, "playlist_sort" ) )
895 int i_order = E_(SSPopN)( st, vars );
896 int i_sort = E_(SSPopN)( st, vars );
897 i_order = i_order % 2;
899 /* FIXME FIXME TODO TODO XXX XXX
900 do not release before fixing this
901 playlist_RecursiveNodeSort( p_sys->p_playlist,
902 p_sys->p_playlist->p_general,
904 msg_Dbg( p_intf, "requested sort playlist by : %d in order : %d",
906 FIXME FIXME TODO TODO XXX XXX */
907 msg_Err( p_intf, "this needs to be fixed to use the new playlist framework" );
909 else if( !strcmp( s, "services_discovery_add" ) )
911 char *psz_sd = E_(SSPop)( st );
912 playlist_ServicesDiscoveryAdd( p_sys->p_playlist, psz_sd );
915 else if( !strcmp( s, "services_discovery_remove" ) )
917 char *psz_sd = E_(SSPop)( st );
918 playlist_ServicesDiscoveryRemove( p_sys->p_playlist, psz_sd );
921 else if( !strcmp( s, "services_discovery_is_loaded" ) )
923 char *psz_sd = E_(SSPop)( st );
925 playlist_IsServicesDiscoveryLoaded( p_sys->p_playlist, psz_sd ) );
928 else if( !strcmp( s, "vlc_volume_set" ) )
930 char *psz_vol = E_(SSPop)( st );
932 audio_volume_t i_volume;
933 aout_VolumeGet( p_intf, &i_volume );
934 if( psz_vol[0] == '+' )
936 i_value = atoi( psz_vol );
937 if( (i_volume + i_value) > AOUT_VOLUME_MAX )
938 aout_VolumeSet( p_intf, AOUT_VOLUME_MAX );
940 aout_VolumeSet( p_intf, i_volume + i_value );
942 else if( psz_vol[0] == '-' )
944 i_value = atoi( psz_vol );
945 if( (i_volume + i_value) < AOUT_VOLUME_MIN )
946 aout_VolumeSet( p_intf, AOUT_VOLUME_MIN );
948 aout_VolumeSet( p_intf, i_volume + i_value );
950 else if( strstr( psz_vol, "%") != NULL )
952 i_value = atoi( psz_vol );
953 if( i_value < 0 ) i_value = 0;
954 if( i_value > 400 ) i_value = 400;
955 aout_VolumeSet( p_intf, (i_value * (AOUT_VOLUME_MAX - AOUT_VOLUME_MIN))/400+AOUT_VOLUME_MIN);
959 i_value = atoi( psz_vol );
960 if( i_value > AOUT_VOLUME_MAX ) i_value = AOUT_VOLUME_MAX;
961 if( i_value < AOUT_VOLUME_MIN ) i_value = AOUT_VOLUME_MIN;
962 aout_VolumeSet( p_intf, i_value );
964 aout_VolumeGet( p_intf, &i_volume );
967 else if( !strcmp( s, "vlc_get_meta" ) )
969 char *psz_meta = E_(SSPop)( st );
970 char *psz_val = NULL;
971 if( p_sys->p_input && input_GetItem(p_sys->p_input) )
973 #define p_item input_GetItem( p_sys->p_input )
974 if( !strcmp( psz_meta, "ARTIST" ) )
976 psz_val = input_ItemGetInfo( p_item,
977 _(VLC_META_INFO_CAT), _(VLC_META_ARTIST) );
979 else if( !strcmp( psz_meta, "TITLE" ) )
981 psz_val = input_ItemGetInfo( p_item,
982 _(VLC_META_INFO_CAT), _(VLC_META_TITLE) );
983 if( psz_val == NULL )
984 psz_val = strdup( p_item->psz_name );
986 else if( !strcmp( psz_meta, "ALBUM" ) )
988 psz_val = input_ItemGetInfo( p_item,
989 _(VLC_META_INFO_CAT), _(VLC_META_COLLECTION) );
991 else if( !strcmp( psz_meta, "GENRE" ) )
993 psz_val = input_ItemGetInfo( p_item,
994 _(VLC_META_INFO_CAT), _(VLC_META_GENRE) );
998 psz_val = input_ItemGetInfo( p_item,
999 _(VLC_META_INFO_CAT), psz_meta );
1003 if( psz_val == NULL ) psz_val = strdup( "" );
1004 E_(SSPush)( st, psz_val );
1008 else if( !strcmp( s, "vlm_command" ) || !strcmp( s, "vlm_cmd" ) )
1011 char *psz_cmd = strdup( "" );
1013 vlm_message_t *vlm_answer;
1015 /* make sure that we have a vlm object */
1016 if( p_intf->p_sys->p_vlm == NULL )
1017 p_intf->p_sys->p_vlm = vlm_New( p_intf );
1020 /* vlm command uses the ';' delimiter
1021 * (else we can't know when to stop) */
1022 while( strcmp( psz_elt = E_(SSPop)( st ), "" )
1023 && strcmp( psz_elt, ";" ) )
1026 (char *)malloc( strlen( psz_cmd ) + strlen( psz_elt ) + 2 );
1027 sprintf( psz_buf, "%s %s", psz_cmd, psz_elt );
1033 msg_Dbg( p_intf, "executing vlm command: %s", psz_cmd );
1034 vlm_ExecuteCommand( p_intf->p_sys->p_vlm, psz_cmd, &vlm_answer );
1036 if( vlm_answer->psz_value == NULL )
1038 psz_error = strdup( "" );
1042 psz_error = malloc( strlen(vlm_answer->psz_name) +
1043 strlen(vlm_answer->psz_value) +
1044 strlen( " : ") + 1 );
1045 sprintf( psz_error , "%s : %s" , vlm_answer->psz_name,
1046 vlm_answer->psz_value );
1049 E_(mvar_AppendNewVar)( vars, "vlm_error", psz_error );
1050 /* this is kind of a duplicate but we need to have the message
1051 * without the command name for the "export" command */
1052 E_(mvar_AppendNewVar)( vars, "vlm_value", vlm_answer->psz_value );
1053 vlm_MessageDelete( vlm_answer );
1058 else if( !strcmp( s, "snapshot" ) )
1060 if( p_sys->p_input )
1062 vout_thread_t *p_vout;
1063 p_vout = vlc_object_find( p_sys->p_input,
1064 VLC_OBJECT_VOUT, FIND_CHILD );
1068 vout_Control( p_vout, VOUT_SNAPSHOT );
1069 vlc_object_release( p_vout );
1070 msg_Dbg( p_intf, "requested snapshot" );
1078 E_(SSPush)( st, s );