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 *****************************************************************************/
45 #include "vlc_interface.h"
46 #include "modules/modules.h" // Gruik!
49 /*****************************************************************************
51 *****************************************************************************/
52 static void RunInterface( intf_thread_t *p_intf );
54 static int SwitchIntfCallback( vlc_object_t *, char const *,
55 vlc_value_t , vlc_value_t , void * );
56 static int AddIntfCallback( vlc_object_t *, char const *,
57 vlc_value_t , vlc_value_t , void * );
59 /*****************************************************************************
60 * intf_Create: prepare interface before main loop
61 *****************************************************************************
62 * This function opens output devices and creates specific interfaces. It sends
63 * its own error messages.
64 *****************************************************************************/
66 * Create the interface, and prepare it for main loop.
67 * You can give some additional options to be used for interface initialization
69 * \param p_this the calling vlc_object_t
70 * \param psz_module a preferred interface module
71 * \param i_options number additional options
72 * \param ppsz_options additional option strings
73 * \return a pointer to the created interface thread, NULL on error
75 intf_thread_t* __intf_Create( vlc_object_t *p_this, const char *psz_module,
76 int i_options, const char *const *ppsz_options )
78 intf_thread_t * p_intf;
81 /* Allocate structure */
82 p_intf = vlc_object_create( p_this, VLC_OBJECT_INTF );
85 msg_Err( p_this, "out of memory" );
88 p_intf->pf_request_window = NULL;
89 p_intf->pf_release_window = NULL;
90 p_intf->pf_control_window = NULL;
91 p_intf->b_play = VLC_FALSE;
92 p_intf->b_interaction = VLC_FALSE;
93 p_intf->b_should_run_on_first_thread = VLC_FALSE;
95 for( i = 0 ; i< i_options; i++ )
96 var_OptionParse( p_this, ppsz_options[i] );
98 /* Choose the best module */
99 p_intf->psz_intf = strdup( psz_module );
100 p_intf->p_module = module_Need( p_intf, "interface", psz_module, VLC_FALSE );
102 if( p_intf->p_module == NULL )
104 msg_Err( p_intf, "no suitable interface module" );
105 free( p_intf->psz_intf );
106 vlc_object_destroy( p_intf );
110 /* Initialize structure */
111 p_intf->b_menu = VLC_FALSE;
112 p_intf->b_menu_change = VLC_FALSE;
114 /* Initialize mutexes */
115 vlc_mutex_init( p_intf, &p_intf->change_lock );
117 /* Attach interface to its parent object */
118 vlc_object_attach( p_intf, p_this );
123 /*****************************************************************************
124 * intf_RunThread: launch the interface thread
125 *****************************************************************************
126 * This function either creates a new thread and runs the interface in it.
127 *****************************************************************************/
129 * Starts and runs the interface thread.
131 * \param p_intf the interface thread
132 * \return VLC_SUCCESS on success, an error number else
134 int intf_RunThread( intf_thread_t *p_intf )
136 /* This interface doesn't need to be run */
137 if( p_intf->pf_run == NULL )
140 /* Hack to get Mac OS X Cocoa runtime running
141 * (it needs access to the main thread) */
142 if( p_intf->b_should_run_on_first_thread )
144 RunInterface( p_intf );
148 /* Run the interface in a separate thread */
149 if( vlc_thread_create( p_intf, "interface", RunInterface,
150 VLC_THREAD_PRIORITY_LOW, VLC_FALSE ) )
152 msg_Err( p_intf, "cannot spawn interface thread" );
160 * Stops the interface thread
162 * This function asks the interface thread to stop
163 * \param p_intf the interface thread
166 void intf_StopThread( intf_thread_t *p_intf )
168 /* Tell the interface to die */
169 vlc_object_kill( p_intf );
170 if( p_intf->pf_run != NULL )
172 vlc_cond_signal( &p_intf->object_wait );
173 vlc_thread_join( p_intf );
178 * \brief Destroy the interface after the main loop endeed.
180 * Destroys interfaces and closes output devices
181 * \param p_intf the interface thread
184 void intf_Destroy( intf_thread_t *p_intf )
186 /* Unlock module if present (a switch may have failed) */
187 if( p_intf->p_module )
189 module_Unneed( p_intf, p_intf->p_module );
191 free( p_intf->psz_intf );
193 vlc_mutex_destroy( &p_intf->change_lock );
196 vlc_object_destroy( p_intf );
200 /* Following functions are local */
202 /*****************************************************************************
203 * RunInterface: setups necessary data and give control to the interface
204 *****************************************************************************/
205 static void RunInterface( intf_thread_t *p_intf )
207 static const char *ppsz_interfaces[] =
211 "wxwidgets", "wxWidgets",
215 const char **ppsz_parser;
219 vlc_value_t val, text;
222 /* Variable used for interface switching */
223 p_intf->psz_switch_intf = NULL;
224 var_Create( p_intf, "intf-switch", VLC_VAR_STRING |
225 VLC_VAR_HASCHOICE | VLC_VAR_ISCOMMAND );
226 text.psz_string = _("Switch interface");
227 var_Change( p_intf, "intf-switch", VLC_VAR_SETTEXT, &text, NULL );
229 /* Only fill the list with available modules */
230 p_list = vlc_list_find( p_intf, VLC_OBJECT_MODULE, FIND_ANYWHERE );
231 for( ppsz_parser = ppsz_interfaces; *ppsz_parser; ppsz_parser += 2 )
233 for( i = 0; i < p_list->i_count; i++ )
235 module_t *p_module = (module_t *)p_list->p_values[i].p_object;
236 if( !strcmp( p_module->psz_object_name, ppsz_parser[0] ) )
238 val.psz_string = (char *)ppsz_parser[0];
239 text.psz_string = (char *)_(ppsz_parser[1]);
240 var_Change( p_intf, "intf-switch", VLC_VAR_ADDCHOICE,
246 vlc_list_release( p_list );
248 var_AddCallback( p_intf, "intf-switch", SwitchIntfCallback, NULL );
250 /* Variable used for interface spawning */
251 var_Create( p_intf, "intf-add", VLC_VAR_STRING |
252 VLC_VAR_HASCHOICE | VLC_VAR_ISCOMMAND );
253 text.psz_string = _("Add Interface");
254 var_Change( p_intf, "intf-add", VLC_VAR_SETTEXT, &text, NULL );
256 val.psz_string = (char *)"rc"; text.psz_string = (char *)"Console";
257 var_Change( p_intf, "intf-add", VLC_VAR_ADDCHOICE, &val, &text );
258 val.psz_string = (char *)"telnet";
259 text.psz_string = (char *)_("Telnet Interface");
260 var_Change( p_intf, "intf-add", VLC_VAR_ADDCHOICE, &val, &text );
261 val.psz_string = (char *)"http";
262 text.psz_string = (char *)_("Web Interface");
263 var_Change( p_intf, "intf-add", VLC_VAR_ADDCHOICE, &val, &text );
264 val.psz_string = (char *)"logger";
265 text.psz_string = (char *)_("Debug logging");
266 var_Change( p_intf, "intf-add", VLC_VAR_ADDCHOICE, &val, &text );
267 val.psz_string = (char *)"gestures";
268 text.psz_string = (char *)_("Mouse Gestures");
269 var_Change( p_intf, "intf-add", VLC_VAR_ADDCHOICE, &val, &text );
271 var_AddCallback( p_intf, "intf-add", AddIntfCallback, NULL );
275 /* Give control to the interface */
276 p_intf->pf_run( p_intf );
278 /* Reset play on start status */
279 p_intf->b_play = VLC_FALSE;
281 if( !p_intf->psz_switch_intf )
286 /* Make sure the old interface is completely uninitialized */
287 module_Unneed( p_intf, p_intf->p_module );
289 /* Provide ability to switch the main interface on the fly */
290 psz_intf = p_intf->psz_switch_intf;
291 p_intf->psz_switch_intf = NULL;
293 vlc_mutex_lock( &p_intf->object_lock );
294 p_intf->b_die = VLC_FALSE; /* FIXME */
295 p_intf->b_dead = VLC_FALSE;
297 vlc_mutex_unlock( &p_intf->object_lock );
299 p_intf->psz_intf = psz_intf;
300 p_intf->p_module = module_Need( p_intf, "interface", psz_intf, 0 );
302 while( p_intf->p_module );
305 static int SwitchIntfCallback( vlc_object_t *p_this, char const *psz_cmd,
306 vlc_value_t oldval, vlc_value_t newval, void *p_data )
308 intf_thread_t *p_intf = (intf_thread_t *)p_this;
309 (void)psz_cmd; (void)oldval; (void)p_data;
311 p_intf->psz_switch_intf =
312 malloc( strlen(newval.psz_string) + sizeof(",none") );
313 sprintf( p_intf->psz_switch_intf, "%s,none", newval.psz_string );
314 vlc_object_kill( p_intf );
319 static int AddIntfCallback( vlc_object_t *p_this, char const *psz_cmd,
320 vlc_value_t oldval, vlc_value_t newval, void *p_data )
322 intf_thread_t *p_intf;
323 char *psz_intf = malloc( strlen(newval.psz_string) + sizeof(",none") );
325 (void)psz_cmd; (void)oldval; (void)p_data;
327 /* Try to create the interface */
328 sprintf( psz_intf, "%s,none", newval.psz_string );
329 p_intf = intf_Create( p_this->p_libvlc, psz_intf, 0, NULL );
333 msg_Err( p_this, "interface \"%s\" initialization failed",
338 /* Try to run the interface */
339 if( intf_RunThread( p_intf ) != VLC_SUCCESS )
341 vlc_object_detach( p_intf );
342 intf_Destroy( p_intf );