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 *****************************************************************************/
40 #include <vlc_common.h>
45 #include "vlc_interface.h"
46 #if defined( __APPLE__ ) || defined( WIN32 )
47 #include "../control/libvlc_internal.h"
51 /*****************************************************************************
53 *****************************************************************************/
54 static void* RunInterface( vlc_object_t *p_this );
55 #if defined( __APPLE__ ) || defined( WIN32 )
56 static void * MonitorLibVLCDeath( vlc_object_t *p_this );
58 static int AddIntfCallback( vlc_object_t *, char const *,
59 vlc_value_t , vlc_value_t , void * );
62 * Destroy the interface after the main loop endeed.
64 * @param p_obj: the interface thread
66 static void intf_Destroy( vlc_object_t *obj )
68 intf_thread_t *p_intf = (intf_thread_t *)obj;
70 free( p_intf->psz_intf );
71 config_ChainDestroy( p_intf->p_cfg );
76 * Create the interface, and prepare it for main loop. It opens ouput device
77 * and creates specific interfaces. Sends its own error messages.
79 * @param p_this the calling vlc_object_t
80 * @param psz_module a preferred interface module
81 * @return a pointer to the created interface thread, NULL on error
83 intf_thread_t* __intf_Create( vlc_object_t *p_this, const char *psz_module )
85 intf_thread_t * p_intf;
87 /* Allocate structure */
88 p_intf = vlc_object_create( p_this, VLC_OBJECT_INTF );
91 #if defined( __APPLE__ ) || defined( WIN32 )
92 p_intf->b_should_run_on_first_thread = false;
95 /* Choose the best module */
97 char *psz_parser = *psz_module == '$'
98 ? var_CreateGetString(p_intf,psz_module+1)
99 : strdup( psz_module );
100 char *psz_tmp = config_ChainCreate( &p_intf->psz_intf, &p_intf->p_cfg,
104 p_intf->p_module = module_need( p_intf, "interface", p_intf->psz_intf, true );
106 if( p_intf->p_module == NULL )
108 msg_Err( p_intf, "no suitable interface module" );
109 free( p_intf->psz_intf );
110 vlc_object_release( p_intf );
114 /* Attach interface to its parent object */
115 vlc_object_attach( p_intf, p_this );
116 vlc_object_set_destructor( p_intf, intf_Destroy );
123 * Starts and runs the interface thread.
125 * @param p_intf the interface thread
126 * @return VLC_SUCCESS on success, an error number else
128 int intf_RunThread( intf_thread_t *p_intf )
130 #if defined( __APPLE__ ) || defined( WIN32 )
131 /* Hack to get Mac OS X Cocoa runtime running
132 * (it needs access to the main thread) */
133 if( p_intf->b_should_run_on_first_thread )
135 if( vlc_thread_create( p_intf, "interface", MonitorLibVLCDeath,
136 VLC_THREAD_PRIORITY_LOW ) )
138 msg_Err( p_intf, "cannot spawn libvlc death monitoring thread" );
141 RunInterface( VLC_OBJECT(p_intf) );
143 /* Make sure our MonitorLibVLCDeath thread exit */
144 vlc_object_kill( p_intf );
145 /* It is monitoring libvlc, not the p_intf */
146 vlc_object_kill( p_intf->p_libvlc );
147 vlc_thread_join( p_intf );
149 vlc_object_detach( p_intf );
150 vlc_object_release( p_intf );
154 /* Run the interface in a separate thread */
155 if( vlc_thread_create( p_intf, "interface", RunInterface,
156 VLC_THREAD_PRIORITY_LOW ) )
158 msg_Err( p_intf, "cannot spawn interface thread" );
167 * Stops the interface thread
169 * This function asks the interface thread to stop
170 * @param p_intf the interface thread
172 void intf_StopThread( intf_thread_t *p_intf )
174 /* Tell the interface to die */
175 vlc_object_kill( p_intf );
176 vlc_thread_join( p_intf );
178 module_unneed( p_intf, p_intf->p_module );
183 /* Following functions are local */
186 * RunInterface: setups necessary data and give control to the interface
188 * @param p_this: interface object
190 static void* RunInterface( vlc_object_t *p_this )
192 intf_thread_t *p_intf = (intf_thread_t *)p_this;
193 vlc_value_t val, text;
194 int canc = vlc_savecancel ();
196 /* Variable used for interface spawning */
197 var_Create( p_intf, "intf-add", VLC_VAR_STRING |
198 VLC_VAR_HASCHOICE | VLC_VAR_ISCOMMAND );
199 text.psz_string = _("Add Interface");
200 var_Change( p_intf, "intf-add", VLC_VAR_SETTEXT, &text, NULL );
202 val.psz_string = (char *)"rc";
203 text.psz_string = (char *)_("Console");
204 var_Change( p_intf, "intf-add", VLC_VAR_ADDCHOICE, &val, &text );
205 val.psz_string = (char *)"telnet";
206 text.psz_string = (char *)_("Telnet Interface");
207 var_Change( p_intf, "intf-add", VLC_VAR_ADDCHOICE, &val, &text );
208 val.psz_string = (char *)"http";
209 text.psz_string = (char *)_("Web Interface");
210 var_Change( p_intf, "intf-add", VLC_VAR_ADDCHOICE, &val, &text );
211 val.psz_string = (char *)"logger";
212 text.psz_string = (char *)_("Debug logging");
213 var_Change( p_intf, "intf-add", VLC_VAR_ADDCHOICE, &val, &text );
214 val.psz_string = (char *)"gestures";
215 text.psz_string = (char *)_("Mouse Gestures");
216 var_Change( p_intf, "intf-add", VLC_VAR_ADDCHOICE, &val, &text );
218 var_AddCallback( p_intf, "intf-add", AddIntfCallback, NULL );
219 vlc_restorecancel (canc);
221 /* Give control to the interface */
223 p_intf->pf_run( p_intf );
228 #if defined( __APPLE__ ) || defined( WIN32 )
229 #include "control/libvlc_internal.h" /* libvlc_InternalWait */
231 * MonitorLibVLCDeath: Used when b_should_run_on_first_thread is set.
233 * @param p_this: the interface object
235 static void * MonitorLibVLCDeath( vlc_object_t * p_this )
237 intf_thread_t *p_intf = (intf_thread_t *)p_this;
238 libvlc_int_t * p_libvlc = p_intf->p_libvlc;
239 int canc = vlc_savecancel ();
241 libvlc_InternalWait( p_libvlc );
243 vlc_object_kill( p_intf ); /* Kill the stupid first thread interface */
244 vlc_restorecancel (canc);
249 static int AddIntfCallback( vlc_object_t *p_this, char const *psz_cmd,
250 vlc_value_t oldval, vlc_value_t newval, void *p_data )
252 (void)psz_cmd; (void)oldval; (void)p_data;
253 intf_thread_t *p_intf;
256 /* Try to create the interface */
257 if( asprintf( &psz_intf, "%s,none", newval.psz_string ) == -1 )
260 p_intf = intf_Create( p_this->p_libvlc, psz_intf );
264 msg_Err( p_this, "interface \"%s\" initialization failed",
269 /* Try to run the interface */
270 if( intf_RunThread( p_intf ) != VLC_SUCCESS )
272 vlc_object_detach( p_intf );
273 vlc_object_release( p_intf );