1 /*****************************************************************************
2 * interface.c: interface access for other threads
3 * This library provides basic functions for threads to interact with user
4 * interface, such as command line.
5 *****************************************************************************
6 * Copyright (C) 1998-2007 the VideoLAN team
9 * Authors: Vincent Seguin <seguin@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 *****************************************************************************/
28 * This file contains functions related to interface management
32 /*****************************************************************************
34 *****************************************************************************/
41 #include "vlc_interface.h"
42 #include "modules/modules.h" // Gruik!
44 /*****************************************************************************
46 *****************************************************************************/
47 static void RunInterface( intf_thread_t *p_intf );
49 static int SwitchIntfCallback( vlc_object_t *, char const *,
50 vlc_value_t , vlc_value_t , void * );
51 static int AddIntfCallback( vlc_object_t *, char const *,
52 vlc_value_t , vlc_value_t , void * );
54 /*****************************************************************************
55 * intf_Create: prepare interface before main loop
56 *****************************************************************************
57 * This function opens output devices and creates specific interfaces. It sends
58 * its own error messages.
59 *****************************************************************************/
61 * Create the interface, and prepare it for main loop.
62 * You can give some additional options to be used for interface initialization
64 * \param p_this the calling vlc_object_t
65 * \param psz_module a preferred interface module
66 * \param i_options number additional options
67 * \param ppsz_options additional option strings
68 * \return a pointer to the created interface thread, NULL on error
70 intf_thread_t* __intf_Create( vlc_object_t *p_this, const char *psz_module,
71 int i_options, const char *const *ppsz_options )
73 intf_thread_t * p_intf;
76 /* Allocate structure */
77 p_intf = vlc_object_create( p_this, VLC_OBJECT_INTF );
80 msg_Err( p_this, "out of memory" );
83 p_intf->pf_request_window = NULL;
84 p_intf->pf_release_window = NULL;
85 p_intf->pf_control_window = NULL;
86 p_intf->b_play = VLC_FALSE;
87 p_intf->b_interaction = VLC_FALSE;
88 p_intf->b_should_run_on_first_thread = VLC_FALSE;
90 for( i = 0 ; i< i_options; i++ )
92 var_OptionParse( p_intf, ppsz_options[i] );
95 /* Choose the best module */
96 p_intf->p_module = module_Need( p_intf, "interface", psz_module, VLC_FALSE );
98 if( p_intf->p_module == NULL )
100 msg_Err( p_intf, "no suitable interface module" );
101 vlc_object_destroy( p_intf );
105 /* Initialize structure */
106 p_intf->b_menu = VLC_FALSE;
107 p_intf->b_menu_change = VLC_FALSE;
109 /* Initialize mutexes */
110 vlc_mutex_init( p_intf, &p_intf->change_lock );
112 /* Attach interface to its parent object */
113 vlc_object_attach( p_intf, p_this );
118 /*****************************************************************************
119 * intf_RunThread: launch the interface thread
120 *****************************************************************************
121 * This function either creates a new thread and runs the interface in it.
122 *****************************************************************************/
124 * Starts and runs the interface thread.
126 * \param p_intf the interface thread
127 * \return VLC_SUCCESS on success, an error number else
129 int intf_RunThread( intf_thread_t *p_intf )
131 /* This interface doesn't need to be run */
132 if( p_intf->pf_run == NULL )
135 /* Hack to get Mac OS X Cocoa runtime running
136 * (it needs access to the main thread) */
137 if( p_intf->b_should_run_on_first_thread )
139 RunInterface( p_intf );
143 /* Run the interface in a separate thread */
144 if( vlc_thread_create( p_intf, "interface", RunInterface,
145 VLC_THREAD_PRIORITY_LOW, VLC_FALSE ) )
147 msg_Err( p_intf, "cannot spawn interface thread" );
155 * Stops the interface thread
157 * This function asks the interface thread to stop
158 * \param p_intf the interface thread
161 void intf_StopThread( intf_thread_t *p_intf )
163 /* Tell the interface to die */
164 vlc_object_kill( p_intf );
165 if( p_intf->pf_run != NULL )
167 vlc_cond_signal( &p_intf->object_wait );
168 vlc_thread_join( p_intf );
173 * \brief Destroy the interface after the main loop endeed.
175 * Destroys interfaces and closes output devices
176 * \param p_intf the interface thread
179 void intf_Destroy( intf_thread_t *p_intf )
181 /* Unlock module if present (a switch may have failed) */
182 if( p_intf->p_module )
184 module_Unneed( p_intf, p_intf->p_module );
187 vlc_mutex_destroy( &p_intf->change_lock );
190 vlc_object_destroy( p_intf );
194 /* Following functions are local */
196 /*****************************************************************************
197 * RunInterface: setups necessary data and give control to the interface
198 *****************************************************************************/
199 static void RunInterface( intf_thread_t *p_intf )
201 static const char *ppsz_interfaces[] =
205 "wxwidgets", "wxWidgets",
209 const char **ppsz_parser;
213 vlc_value_t val, text;
216 /* Variable used for interface switching */
217 p_intf->psz_switch_intf = NULL;
218 var_Create( p_intf, "intf-switch", VLC_VAR_STRING |
219 VLC_VAR_HASCHOICE | VLC_VAR_ISCOMMAND );
220 text.psz_string = _("Switch interface");
221 var_Change( p_intf, "intf-switch", VLC_VAR_SETTEXT, &text, NULL );
223 /* Only fill the list with available modules */
224 p_list = vlc_list_find( p_intf, VLC_OBJECT_MODULE, FIND_ANYWHERE );
225 for( ppsz_parser = ppsz_interfaces; *ppsz_parser; ppsz_parser += 2 )
227 for( i = 0; i < p_list->i_count; i++ )
229 module_t *p_module = (module_t *)p_list->p_values[i].p_object;
230 if( !strcmp( p_module->psz_object_name, ppsz_parser[0] ) )
232 val.psz_string = (char *)ppsz_parser[0];
233 text.psz_string = (char *)_(ppsz_parser[1]);
234 var_Change( p_intf, "intf-switch", VLC_VAR_ADDCHOICE,
240 vlc_list_release( p_list );
242 var_AddCallback( p_intf, "intf-switch", SwitchIntfCallback, NULL );
244 /* Variable used for interface spawning */
245 var_Create( p_intf, "intf-add", VLC_VAR_STRING |
246 VLC_VAR_HASCHOICE | VLC_VAR_ISCOMMAND );
247 text.psz_string = _("Add Interface");
248 var_Change( p_intf, "intf-add", VLC_VAR_SETTEXT, &text, NULL );
250 val.psz_string = (char *)"rc"; text.psz_string = (char *)"Console";
251 var_Change( p_intf, "intf-add", VLC_VAR_ADDCHOICE, &val, &text );
252 val.psz_string = (char *)"telnet";
253 text.psz_string = (char *)_("Telnet Interface");
254 var_Change( p_intf, "intf-add", VLC_VAR_ADDCHOICE, &val, &text );
255 val.psz_string = (char *)"http";
256 text.psz_string = (char *)_("Web Interface");
257 var_Change( p_intf, "intf-add", VLC_VAR_ADDCHOICE, &val, &text );
258 val.psz_string = (char *)"logger";
259 text.psz_string = (char *)_("Debug logging");
260 var_Change( p_intf, "intf-add", VLC_VAR_ADDCHOICE, &val, &text );
261 val.psz_string = (char *)"gestures";
262 text.psz_string = (char *)_("Mouse Gestures");
263 var_Change( p_intf, "intf-add", VLC_VAR_ADDCHOICE, &val, &text );
265 var_AddCallback( p_intf, "intf-add", AddIntfCallback, NULL );
269 /* Give control to the interface */
270 p_intf->pf_run( p_intf );
272 /* Reset play on start status */
273 p_intf->b_play = VLC_FALSE;
275 if( !p_intf->psz_switch_intf )
280 /* Make sure the old interface is completely uninitialized */
281 module_Unneed( p_intf, p_intf->p_module );
283 /* Provide ability to switch the main interface on the fly */
284 psz_intf = p_intf->psz_switch_intf;
285 p_intf->psz_switch_intf = NULL;
287 vlc_mutex_lock( &p_intf->object_lock );
288 p_intf->b_die = VLC_FALSE; /* FIXME */
289 p_intf->b_dead = VLC_FALSE;
291 vlc_mutex_unlock( &p_intf->object_lock );
293 p_intf->p_module = module_Need( p_intf, "interface", psz_intf, 0 );
296 while( p_intf->p_module );
299 static int SwitchIntfCallback( vlc_object_t *p_this, char const *psz_cmd,
300 vlc_value_t oldval, vlc_value_t newval, void *p_data )
302 intf_thread_t *p_intf = (intf_thread_t *)p_this;
303 (void)psz_cmd; (void)oldval; (void)p_data;
305 p_intf->psz_switch_intf =
306 malloc( strlen(newval.psz_string) + sizeof(",none") );
307 sprintf( p_intf->psz_switch_intf, "%s,none", newval.psz_string );
308 vlc_object_kill( p_intf );
313 static int AddIntfCallback( vlc_object_t *p_this, char const *psz_cmd,
314 vlc_value_t oldval, vlc_value_t newval, void *p_data )
316 intf_thread_t *p_intf;
317 char *psz_intf = malloc( strlen(newval.psz_string) + sizeof(",none") );
319 (void)psz_cmd; (void)oldval; (void)p_data;
321 /* Try to create the interface */
322 sprintf( psz_intf, "%s,none", newval.psz_string );
323 p_intf = intf_Create( p_this->p_libvlc, psz_intf, 0, NULL );
327 msg_Err( p_this, "interface \"%s\" initialization failed",
332 /* Try to run the interface */
333 if( intf_RunThread( p_intf ) != VLC_SUCCESS )
335 vlc_object_detach( p_intf );
336 intf_Destroy( p_intf );