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 *****************************************************************************/
30 static vlc_object_t *GetVLCObject( intf_thread_t *p_intf,
31 const char *psz_object,
32 vlc_bool_t *pb_need_release )
34 intf_sys_t *p_sys = p_intf->p_sys;
35 int i_object_type = 0;
36 vlc_object_t *p_object = NULL;
37 *pb_need_release = VLC_FALSE;
39 if( !strcmp( psz_object, "VLC_OBJECT_ROOT" ) )
40 i_object_type = VLC_OBJECT_ROOT;
41 else if( !strcmp( psz_object, "VLC_OBJECT_VLC" ) )
42 p_object = VLC_OBJECT(p_intf->p_vlc);
43 else if( !strcmp( psz_object, "VLC_OBJECT_INTF" ) )
44 p_object = VLC_OBJECT(p_intf);
45 else if( !strcmp( psz_object, "VLC_OBJECT_PLAYLIST" ) )
46 p_object = VLC_OBJECT(p_sys->p_playlist);
47 else if( !strcmp( psz_object, "VLC_OBJECT_INPUT" ) )
48 p_object = VLC_OBJECT(p_sys->p_input);
49 else if( !strcmp( psz_object, "VLC_OBJECT_VOUT" ) )
50 i_object_type = VLC_OBJECT_VOUT;
51 else if( !strcmp( psz_object, "VLC_OBJECT_AOUT" ) )
52 i_object_type = VLC_OBJECT_AOUT;
53 else if( !strcmp( psz_object, "VLC_OBJECT_SOUT" ) )
54 i_object_type = VLC_OBJECT_SOUT;
56 msg_Warn( p_intf, "unknown object type (%s)", psz_object );
58 if( p_object == NULL && i_object_type )
60 *pb_need_release = VLC_TRUE;
61 p_object = vlc_object_find( p_intf, i_object_type, FIND_ANYWHERE );
67 void E_(SSInit)( rpn_stack_t *st )
72 void E_(SSClean)( rpn_stack_t *st )
74 while( st->i_stack > 0 )
76 free( st->stack[--st->i_stack] );
80 void E_(SSPush)( rpn_stack_t *st, const char *s )
82 if( st->i_stack < STACK_MAX )
84 st->stack[st->i_stack++] = strdup( s );
88 char *E_(SSPop)( rpn_stack_t *st )
90 if( st->i_stack <= 0 )
96 return st->stack[--st->i_stack];
100 int E_(SSPopN)( rpn_stack_t *st, mvar_t *vars )
108 name = E_(SSPop)( st );
109 i = strtol( name, &end, 0 );
112 value = E_(mvar_GetValue)( vars, name );
120 void E_(SSPushN)( rpn_stack_t *st, int i )
124 snprintf( v, sizeof (v), "%d", i );
128 void E_(EvaluateRPN)( intf_thread_t *p_intf, mvar_t *vars,
129 rpn_stack_t *st, char *exp )
131 intf_sys_t *p_sys = p_intf->p_sys;
133 while( exp != NULL && *exp != '\0' )
146 p = E_(FirstWord)( exp, exp );
147 E_(SSPush)( st, exp );
153 p = E_(FirstWord)( exp, exp );
157 exp += strlen( exp );
169 /* 1. Integer function */
170 if( !strcmp( s, "!" ) )
172 E_(SSPushN)( st, ~E_(SSPopN)( st, vars ) );
174 else if( !strcmp( s, "^" ) )
176 E_(SSPushN)( st, E_(SSPopN)( st, vars ) ^ E_(SSPopN)( st, vars ) );
178 else if( !strcmp( s, "&" ) )
180 E_(SSPushN)( st, E_(SSPopN)( st, vars ) & E_(SSPopN)( st, vars ) );
182 else if( !strcmp( s, "|" ) )
184 E_(SSPushN)( st, E_(SSPopN)( st, vars ) | E_(SSPopN)( st, vars ) );
186 else if( !strcmp( s, "+" ) )
188 E_(SSPushN)( st, E_(SSPopN)( st, vars ) + E_(SSPopN)( st, vars ) );
190 else if( !strcmp( s, "-" ) )
192 int j = E_(SSPopN)( st, vars );
193 int i = E_(SSPopN)( st, vars );
194 E_(SSPushN)( st, i - j );
196 else if( !strcmp( s, "*" ) )
198 E_(SSPushN)( st, E_(SSPopN)( st, vars ) * E_(SSPopN)( st, vars ) );
200 else if( !strcmp( s, "/" ) )
204 j = E_(SSPopN)( st, vars );
205 i = E_(SSPopN)( st, vars );
207 E_(SSPushN)( st, j != 0 ? i / j : 0 );
209 else if( !strcmp( s, "%" ) )
213 j = E_(SSPopN)( st, vars );
214 i = E_(SSPopN)( st, vars );
216 E_(SSPushN)( st, j != 0 ? i % j : 0 );
218 /* 2. integer tests */
219 else if( !strcmp( s, "=" ) )
221 E_(SSPushN)( st, E_(SSPopN)( st, vars ) == E_(SSPopN)( st, vars ) ? -1 : 0 );
223 else if( !strcmp( s, "!=" ) )
225 E_(SSPushN)( st, E_(SSPopN)( st, vars ) != E_(SSPopN)( st, vars ) ? -1 : 0 );
227 else if( !strcmp( s, "<" ) )
229 int j = E_(SSPopN)( st, vars );
230 int i = E_(SSPopN)( st, vars );
232 E_(SSPushN)( st, i < j ? -1 : 0 );
234 else if( !strcmp( s, ">" ) )
236 int j = E_(SSPopN)( st, vars );
237 int i = E_(SSPopN)( st, vars );
239 E_(SSPushN)( st, i > j ? -1 : 0 );
241 else if( !strcmp( s, "<=" ) )
243 int j = E_(SSPopN)( st, vars );
244 int i = E_(SSPopN)( st, vars );
246 E_(SSPushN)( st, i <= j ? -1 : 0 );
248 else if( !strcmp( s, ">=" ) )
250 int j = E_(SSPopN)( st, vars );
251 int i = E_(SSPopN)( st, vars );
253 E_(SSPushN)( st, i >= j ? -1 : 0 );
255 /* 3. string functions */
256 else if( !strcmp( s, "strcat" ) )
258 char *s2 = E_(SSPop)( st );
259 char *s1 = E_(SSPop)( st );
260 char *str = malloc( strlen( s1 ) + strlen( s2 ) + 1 );
265 E_(SSPush)( st, str );
270 else if( !strcmp( s, "strcmp" ) )
272 char *s2 = E_(SSPop)( st );
273 char *s1 = E_(SSPop)( st );
275 E_(SSPushN)( st, strcmp( s1, s2 ) );
279 else if( !strcmp( s, "strncmp" ) )
281 int n = E_(SSPopN)( st, vars );
282 char *s2 = E_(SSPop)( st );
283 char *s1 = E_(SSPop)( st );
285 E_(SSPushN)( st, strncmp( s1, s2 , n ) );
289 else if( !strcmp( s, "strsub" ) )
291 int n = E_(SSPopN)( st, vars );
292 int m = E_(SSPopN)( st, vars );
294 char *s = E_(SSPop)( st );
306 str = malloc( i_len + 1 );
308 memcpy( str, s + m - 1, i_len );
311 E_(SSPush)( st, str );
315 else if( !strcmp( s, "strlen" ) )
317 char *str = E_(SSPop)( st );
319 E_(SSPushN)( st, strlen( str ) );
322 else if( !strcmp( s, "str_replace" ) )
324 char *psz_to = E_(SSPop)( st );
325 char *psz_from = E_(SSPop)( st );
326 char *psz_in = E_(SSPop)( st );
327 char *psz_in_current = psz_in;
328 char *psz_out = malloc( strlen(psz_in) * strlen(psz_to) + 1 );
329 char *psz_out_current = psz_out;
331 while( (p = strstr( psz_in_current, psz_from )) != NULL )
333 memcpy( psz_out_current, psz_in_current, p - psz_in_current );
334 psz_out_current += p - psz_in_current;
335 strcpy( psz_out_current, psz_to );
336 psz_out_current += strlen(psz_to);
337 psz_in_current = p + strlen(psz_from);
339 strcpy( psz_out_current, psz_in_current );
340 psz_out_current += strlen(psz_in_current);
341 *psz_out_current = '\0';
343 E_(SSPush)( st, psz_out );
349 else if( !strcmp( s, "url_extract" ) )
351 char *url = E_(mvar_GetValue)( vars, "url_value" );
352 char *name = E_(SSPop)( st );
356 E_(ExtractURIValue)( url, name, value, 512 );
358 tmp = E_(FromUTF8)( p_intf, value );
359 E_(SSPush)( st, tmp );
363 else if( !strcmp( s, "url_encode" ) )
365 char *url = E_(SSPop)( st );
368 value = E_(ToUTF8)( p_intf, url );
371 value = vlc_UrlEncode( url );
373 E_(SSPush)( st, value );
376 else if( !strcmp( s, "addslashes" ) )
378 char *psz_src = E_(SSPop)( st );
382 p = psz_dest = malloc( strlen( str ) * 2 + 1 );
384 while( *str != '\0' )
386 if( *str == '"' || *str == '\'' || *str == '\\' )
395 E_(SSPush)( st, psz_dest );
399 else if( !strcmp( s, "stripslashes" ) )
401 char *psz_src = E_(SSPop)( st );
405 p = psz_dest = strdup( psz_src );
409 if( *str == '\\' && *(str + 1) )
417 E_(SSPush)( st, psz_dest );
421 else if( !strcmp( s, "htmlspecialchars" ) )
423 char *psz_src = E_(SSPop)( st );
426 psz_dest = convert_xml_special_chars( psz_src );
428 E_(SSPush)( st, psz_dest );
432 else if( !strcmp( s, "realpath" ) )
434 char *psz_src = E_(SSPop)( st );
435 char *psz_dir = E_(RealPath)( p_intf, psz_src );
437 E_(SSPush)( st, psz_dir );
441 /* 4. stack functions */
442 else if( !strcmp( s, "dup" ) )
444 char *str = E_(SSPop)( st );
445 E_(SSPush)( st, str );
446 E_(SSPush)( st, str );
449 else if( !strcmp( s, "drop" ) )
451 char *str = E_(SSPop)( st );
454 else if( !strcmp( s, "swap" ) )
456 char *s1 = E_(SSPop)( st );
457 char *s2 = E_(SSPop)( st );
459 E_(SSPush)( st, s1 );
460 E_(SSPush)( st, s2 );
464 else if( !strcmp( s, "flush" ) )
469 else if( !strcmp( s, "store" ) )
471 char *value = E_(SSPop)( st );
472 char *name = E_(SSPop)( st );
474 E_(mvar_PushNewVar)( vars, name, value );
478 else if( !strcmp( s, "value" ) )
480 char *name = E_(SSPop)( st );
481 char *value = E_(mvar_GetValue)( vars, name );
483 E_(SSPush)( st, value );
487 /* 5. player control */
488 else if( !strcmp( s, "vlc_play" ) )
490 int i_id = E_(SSPopN)( st, vars );
493 i_ret = playlist_Control( p_sys->p_playlist, PLAYLIST_VIEWPLAY,
495 playlist_ItemGetById( p_sys->p_playlist,
497 msg_Dbg( p_intf, "requested playlist item: %i", i_id );
498 E_(SSPushN)( st, i_ret );
500 else if( !strcmp( s, "vlc_stop" ) )
502 playlist_Control( p_sys->p_playlist, PLAYLIST_STOP );
503 msg_Dbg( p_intf, "requested playlist stop" );
505 else if( !strcmp( s, "vlc_pause" ) )
507 playlist_Control( p_sys->p_playlist, PLAYLIST_PAUSE );
508 msg_Dbg( p_intf, "requested playlist pause" );
510 else if( !strcmp( s, "vlc_next" ) )
512 playlist_Control( p_sys->p_playlist, PLAYLIST_SKIP, 1 );
513 msg_Dbg( p_intf, "requested playlist next" );
515 else if( !strcmp( s, "vlc_previous" ) )
517 playlist_Control( p_sys->p_playlist, PLAYLIST_SKIP, -1 );
518 msg_Dbg( p_intf, "requested playlist previous" );
520 else if( !strcmp( s, "vlc_seek" ) )
522 char *psz_value = E_(SSPop)( st );
523 E_(HandleSeek)( p_intf, psz_value );
524 msg_Dbg( p_intf, "requested playlist seek: %s", psz_value );
527 else if( !strcmp( s, "vlc_var_type" )
528 || !strcmp( s, "vlc_config_type" ) )
530 vlc_object_t *p_object;
531 const char *psz_type = NULL;
534 if( !strcmp( s, "vlc_var_type" ) )
536 char *psz_object = E_(SSPop)( st );
537 char *psz_variable = E_(SSPop)( st );
538 vlc_bool_t b_need_release;
540 p_object = GetVLCObject( p_intf, psz_object, &b_need_release );
542 if( p_object != NULL )
543 i_type = var_Type( p_object, psz_variable );
544 free( psz_variable );
546 if( b_need_release && p_object != NULL )
547 vlc_object_release( p_object );
551 char *psz_variable = E_(SSPop)( st );
552 p_object = VLC_OBJECT(p_intf);
553 i_type = config_GetType( p_object, psz_variable );
554 free( psz_variable );
557 if( p_object != NULL )
559 switch( i_type & VLC_VAR_TYPE )
562 psz_type = "VLC_VAR_BOOL";
564 case VLC_VAR_INTEGER:
565 psz_type = "VLC_VAR_INTEGER";
568 psz_type = "VLC_VAR_HOTKEY";
571 psz_type = "VLC_VAR_STRING";
574 psz_type = "VLC_VAR_MODULE";
577 psz_type = "VLC_VAR_FILE";
579 case VLC_VAR_DIRECTORY:
580 psz_type = "VLC_VAR_DIRECTORY";
582 case VLC_VAR_VARIABLE:
583 psz_type = "VLC_VAR_VARIABLE";
586 psz_type = "VLC_VAR_FLOAT";
589 psz_type = "UNDEFINED";
593 psz_type = "INVALID";
595 E_(SSPush)( st, psz_type );
597 else if( !strcmp( s, "vlc_var_set" ) )
599 char *psz_object = E_(SSPop)( st );
600 char *psz_variable = E_(SSPop)( st );
601 vlc_bool_t b_need_release;
603 vlc_object_t *p_object = GetVLCObject( p_intf, psz_object,
606 if( p_object != NULL )
608 vlc_bool_t b_error = VLC_FALSE;
609 char *psz_value = NULL;
613 i_type = var_Type( p_object, psz_variable );
615 switch( i_type & VLC_VAR_TYPE )
618 val.b_bool = E_(SSPopN)( st, vars );
619 msg_Dbg( p_intf, "requested %s var change: %s->%d",
620 psz_object, psz_variable, val.b_bool );
622 case VLC_VAR_INTEGER:
624 val.i_int = E_(SSPopN)( st, vars );
625 msg_Dbg( p_intf, "requested %s var change: %s->%d",
626 psz_object, psz_variable, val.i_int );
631 case VLC_VAR_DIRECTORY:
632 case VLC_VAR_VARIABLE:
633 val.psz_string = psz_value = E_(SSPop)( st );
634 msg_Dbg( p_intf, "requested %s var change: %s->%s",
635 psz_object, psz_variable, psz_value );
638 psz_value = E_(SSPop)( st );
639 val.f_float = atof( psz_value );
640 msg_Dbg( p_intf, "requested %s var change: %s->%f",
641 psz_object, psz_variable, val.f_float );
644 E_(SSPopN)( st, vars );
645 msg_Warn( p_intf, "invalid %s variable type %d (%s)",
646 psz_object, i_type & VLC_VAR_TYPE, psz_variable );
651 var_Set( p_object, psz_variable, val );
652 if( psz_value != NULL )
656 msg_Warn( p_intf, "vlc_var_set called without an object" );
657 free( psz_variable );
660 if( b_need_release && p_object != NULL )
661 vlc_object_release( p_object );
663 else if( !strcmp( s, "vlc_var_get" ) )
665 char *psz_object = E_(SSPop)( st );
666 char *psz_variable = E_(SSPop)( st );
667 vlc_bool_t b_need_release;
669 vlc_object_t *p_object = GetVLCObject( p_intf, psz_object,
672 if( p_object != NULL )
677 i_type = var_Type( p_object, psz_variable );
678 var_Get( p_object, psz_variable, &val );
680 switch( i_type & VLC_VAR_TYPE )
683 E_(SSPushN)( st, val.b_bool );
685 case VLC_VAR_INTEGER:
687 E_(SSPushN)( st, val.i_int );
692 case VLC_VAR_DIRECTORY:
693 case VLC_VAR_VARIABLE:
694 E_(SSPush)( st, val.psz_string );
695 free( val.psz_string );
700 lldiv_t value = lldiv( val.f_float * 1000000, 1000000 );
701 snprintf( psz_value, sizeof(psz_value), I64Fd".%06u",
702 value.quot, (unsigned int)value.rem );
703 E_(SSPush)( st, psz_value );
707 msg_Warn( p_intf, "invalid %s variable type %d (%s)",
708 psz_object, i_type & VLC_VAR_TYPE, psz_variable );
709 E_(SSPush)( st, "" );
714 msg_Warn( p_intf, "vlc_var_get called without an object" );
715 E_(SSPush)( st, "" );
717 free( psz_variable );
720 if( b_need_release && p_object != NULL )
721 vlc_object_release( p_object );
723 else if( !strcmp( s, "vlc_object_exists" ) )
725 char *psz_object = E_(SSPop)( st );
726 vlc_bool_t b_need_release;
728 vlc_object_t *p_object = GetVLCObject( p_intf, psz_object,
730 if( b_need_release && p_object != NULL )
731 vlc_object_release( p_object );
733 if( p_object != NULL )
734 E_(SSPush)( st, "1" );
736 E_(SSPush)( st, "0" );
738 else if( !strcmp( s, "vlc_config_set" ) )
740 char *psz_variable = E_(SSPop)( st );
741 int i_type = config_GetType( p_intf, psz_variable );
743 switch( i_type & VLC_VAR_TYPE )
746 case VLC_VAR_INTEGER:
747 config_PutInt( p_intf, psz_variable, E_(SSPopN)( st, vars ) );
752 case VLC_VAR_DIRECTORY:
754 char *psz_string = E_(SSPop)( st );
755 config_PutPsz( p_intf, psz_variable, psz_string );
761 char *psz_string = E_(SSPop)( st );
762 config_PutFloat( p_intf, psz_variable, atof(psz_string) );
767 msg_Warn( p_intf, "vlc_config_set called on unknown var (%s)",
770 free( psz_variable );
772 else if( !strcmp( s, "vlc_config_get" ) )
774 char *psz_variable = E_(SSPop)( st );
775 int i_type = config_GetType( p_intf, psz_variable );
777 switch( i_type & VLC_VAR_TYPE )
780 case VLC_VAR_INTEGER:
781 E_(SSPushN)( st, config_GetInt( p_intf, psz_variable ) );
786 case VLC_VAR_DIRECTORY:
788 char *psz_string = config_GetPsz( p_intf, psz_variable );
789 E_(SSPush)( st, psz_string );
796 lldiv_t value = lldiv( config_GetFloat( p_intf, psz_variable )
797 * 1000000, 1000000 );
798 snprintf( psz_string, sizeof(psz_string), I64Fd".%06u",
799 value.quot, (unsigned int)value.rem );
800 E_(SSPush)( st, psz_string );
804 msg_Warn( p_intf, "vlc_config_get called on unknown var (%s)",
807 free( psz_variable );
809 else if( !strcmp( s, "vlc_config_save" ) )
811 char *psz_module = E_(SSPop)( st );
819 i_result = config_SaveConfigFile( p_intf, psz_module );
821 if( psz_module != NULL )
823 E_(SSPushN)( st, i_result );
825 else if( !strcmp( s, "vlc_config_reset" ) )
827 config_ResetAll( p_intf );
829 /* 6. playlist functions */
830 else if( !strcmp( s, "playlist_add" ) )
832 char *psz_name = E_(SSPop)( st );
833 char *mrl = E_(SSPop)( st );
835 input_item_t *p_input;
838 tmp = E_(ToUTF8)( p_intf, psz_name );
841 tmp = E_(ToUTF8)( p_intf, mrl );
847 p_input = E_(MRLParse)( p_intf, mrl, mrl );
851 p_input = E_(MRLParse)( p_intf, mrl, psz_name );
854 if( !p_input || !p_input->psz_uri || !*p_input->psz_uri )
857 msg_Dbg( p_intf, "invalid requested mrl: %s", mrl );
861 i_id = playlist_PlaylistAddInput( p_sys->p_playlist, p_input,
862 PLAYLIST_APPEND, PLAYLIST_END );
863 msg_Dbg( p_intf, "requested mrl add: %s", mrl );
865 E_(SSPushN)( st, i_id );
870 else if( !strcmp( s, "playlist_empty" ) )
872 playlist_LockClear( p_sys->p_playlist );
873 msg_Dbg( p_intf, "requested playlist empty" );
875 else if( !strcmp( s, "playlist_delete" ) )
877 int i_id = E_(SSPopN)( st, vars );
878 playlist_LockDelete( p_sys->p_playlist, i_id );
879 msg_Dbg( p_intf, "requested playlist delete: %d", i_id );
881 else if( !strcmp( s, "playlist_move" ) )
883 /*int i_newpos =*/ E_(SSPopN)( st, vars );
884 /*int i_pos =*/ E_(SSPopN)( st, vars );
885 /* FIXME FIXME TODO TODO XXX XXX
886 do not release before fixing this
887 if ( i_pos < i_newpos )
889 playlist_Move( p_sys->p_playlist, i_pos, i_newpos + 1 );
893 playlist_Move( p_sys->p_playlist, i_pos, i_newpos );
895 msg_Dbg( p_intf, "requested to move playlist item %d to %d",
897 FIXME FIXME TODO TODO XXX XXX */
898 msg_Err( p_intf, "moving using indexes is obsolete. We need to update this function" );
900 else if( !strcmp( s, "playlist_sort" ) )
902 int i_order = E_(SSPopN)( st, vars );
903 int i_sort = E_(SSPopN)( st, vars );
904 i_order = i_order % 2;
906 /* FIXME FIXME TODO TODO XXX XXX
907 do not release before fixing this
908 playlist_RecursiveNodeSort( p_sys->p_playlist,
909 p_sys->p_playlist->p_general,
911 msg_Dbg( p_intf, "requested sort playlist by : %d in order : %d",
913 FIXME FIXME TODO TODO XXX XXX */
914 msg_Err( p_intf, "this needs to be fixed to use the new playlist framework" );
916 else if( !strcmp( s, "services_discovery_add" ) )
918 char *psz_sd = E_(SSPop)( st );
919 playlist_ServicesDiscoveryAdd( p_sys->p_playlist, psz_sd );
922 else if( !strcmp( s, "services_discovery_remove" ) )
924 char *psz_sd = E_(SSPop)( st );
925 playlist_ServicesDiscoveryRemove( p_sys->p_playlist, psz_sd );
928 else if( !strcmp( s, "services_discovery_is_loaded" ) )
930 char *psz_sd = E_(SSPop)( st );
932 playlist_IsServicesDiscoveryLoaded( p_sys->p_playlist, psz_sd ) );
935 else if( !strcmp( s, "vlc_volume_set" ) )
937 char *psz_vol = E_(SSPop)( st );
939 audio_volume_t i_volume;
940 aout_VolumeGet( p_intf, &i_volume );
941 if( psz_vol[0] == '+' )
943 i_value = atoi( psz_vol );
944 if( (i_volume + i_value) > AOUT_VOLUME_MAX )
945 aout_VolumeSet( p_intf, AOUT_VOLUME_MAX );
947 aout_VolumeSet( p_intf, i_volume + i_value );
949 else if( psz_vol[0] == '-' )
951 i_value = atoi( psz_vol );
952 if( (i_volume + i_value) < AOUT_VOLUME_MIN )
953 aout_VolumeSet( p_intf, AOUT_VOLUME_MIN );
955 aout_VolumeSet( p_intf, i_volume + i_value );
957 else if( strstr( psz_vol, "%") != NULL )
959 i_value = atoi( psz_vol );
960 if( i_value < 0 ) i_value = 0;
961 if( i_value > 400 ) i_value = 400;
962 aout_VolumeSet( p_intf, (i_value * (AOUT_VOLUME_MAX - AOUT_VOLUME_MIN))/400+AOUT_VOLUME_MIN);
966 i_value = atoi( psz_vol );
967 if( i_value > AOUT_VOLUME_MAX ) i_value = AOUT_VOLUME_MAX;
968 if( i_value < AOUT_VOLUME_MIN ) i_value = AOUT_VOLUME_MIN;
969 aout_VolumeSet( p_intf, i_value );
971 aout_VolumeGet( p_intf, &i_volume );
974 else if( !strcmp( s, "vlc_get_meta" ) )
976 char *psz_meta = E_(SSPop)( st );
977 char *psz_val = NULL;
978 if( p_sys->p_input && p_sys->p_input->input.p_item )
980 #define p_item p_sys->p_input->input.p_item
981 if( !strcmp( psz_meta, "ARTIST" ) )
983 psz_val = vlc_input_item_GetInfo( p_item,
984 _(VLC_META_INFO_CAT), _(VLC_META_ARTIST) );
986 else if( !strcmp( psz_meta, "TITLE" ) )
988 psz_val = vlc_input_item_GetInfo( p_item,
989 _(VLC_META_INFO_CAT), _(VLC_META_TITLE) );
990 if( psz_val == NULL )
991 psz_val == strdup( p_item->psz_name );
993 else if( !strcmp( psz_meta, "ALBUM" ) )
995 psz_val = vlc_input_item_GetInfo( p_item,
996 _(VLC_META_INFO_CAT), _(VLC_META_COLLECTION) );
998 else if( !strcmp( psz_meta, "GENRE" ) )
1000 psz_val = vlc_input_item_GetInfo( p_item,
1001 _(VLC_META_INFO_CAT), _(VLC_META_GENRE) );
1005 psz_val = vlc_input_item_GetInfo( p_item,
1006 _(VLC_META_INFO_CAT), psz_meta );
1010 if( psz_val == NULL ) psz_val = strdup( "" );
1011 E_(SSPush)( st, psz_val );
1015 else if( !strcmp( s, "vlm_command" ) || !strcmp( s, "vlm_cmd" ) )
1018 char *psz_cmd = strdup( "" );
1020 vlm_message_t *vlm_answer;
1022 /* make sure that we have a vlm object */
1023 if( p_intf->p_sys->p_vlm == NULL )
1024 p_intf->p_sys->p_vlm = vlm_New( p_intf );
1027 /* vlm command uses the ';' delimiter
1028 * (else we can't know when to stop) */
1029 while( strcmp( psz_elt = E_(SSPop)( st ), "" )
1030 && strcmp( psz_elt, ";" ) )
1033 (char *)malloc( strlen( psz_cmd ) + strlen( psz_elt ) + 2 );
1034 sprintf( psz_buf, "%s %s", psz_cmd, psz_elt );
1040 msg_Dbg( p_intf, "executing vlm command: %s", psz_cmd );
1041 vlm_ExecuteCommand( p_intf->p_sys->p_vlm, psz_cmd, &vlm_answer );
1043 if( vlm_answer->psz_value == NULL )
1045 psz_error = strdup( "" );
1049 psz_error = malloc( strlen(vlm_answer->psz_name) +
1050 strlen(vlm_answer->psz_value) +
1051 strlen( " : ") + 1 );
1052 sprintf( psz_error , "%s : %s" , vlm_answer->psz_name,
1053 vlm_answer->psz_value );
1056 E_(mvar_AppendNewVar)( vars, "vlm_error", psz_error );
1057 /* this is kind of a duplicate but we need to have the message
1058 * without the command name for the "export" command */
1059 E_(mvar_AppendNewVar)( vars, "vlm_value", vlm_answer->psz_value );
1060 vlm_MessageDelete( vlm_answer );
1065 else if( !strcmp( s, "snapshot" ) )
1067 if( p_sys->p_input )
1069 vout_thread_t *p_vout;
1070 p_vout = vlc_object_find( p_sys->p_input,
1071 VLC_OBJECT_VOUT, FIND_CHILD );
1075 vout_Control( p_vout, VOUT_SNAPSHOT );
1076 vlc_object_release( p_vout );
1077 msg_Dbg( p_intf, "requested snapshot" );
1085 E_(SSPush)( st, s );