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) 1998-2001 VideoLAN
7 * $Id: interface.c,v 1.86 2002/01/07 02:12:30 sam Exp $
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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
24 *****************************************************************************/
26 /*****************************************************************************
28 *****************************************************************************/
29 #include <errno.h> /* ENOMEM */
30 #include <stdlib.h> /* free(), strtol() */
31 #include <stdio.h> /* FILE */
32 #include <string.h> /* strerror() */
33 #include <sys/types.h> /* off_t */
35 #include <videolan/vlc.h>
37 #include "stream_control.h"
38 #include "input_ext-intf.h"
40 #include "audio_output.h"
42 #include "interface.h"
43 #include "intf_playlist.h"
46 #include "video_output.h"
48 /*****************************************************************************
50 *****************************************************************************/
51 static void intf_Manage( intf_thread_t *p_intf );
53 /*****************************************************************************
54 * intf_Create: prepare interface before main loop
55 *****************************************************************************
56 * This function opens output devices and creates specific interfaces. It sends
57 * its own error messages.
58 *****************************************************************************/
59 intf_thread_t* intf_Create( void )
61 intf_thread_t * p_intf;
63 /* Allocate structure */
64 p_intf = malloc( sizeof( intf_thread_t ) );
67 intf_ErrMsg( "intf error: cannot create interface thread (%s)",
72 /* Choose the best module */
73 p_intf->p_module = module_Need( MODULE_CAPABILITY_INTF,
74 main_GetPszVariable( INTF_METHOD_VAR, NULL ),
77 if( p_intf->p_module == NULL )
79 intf_ErrMsg( "intf error: no suitable intf module" );
84 #define f p_intf->p_module->p_functions->intf.functions.intf
85 p_intf->pf_open = f.pf_open;
86 p_intf->pf_close = f.pf_close;
87 p_intf->pf_run = f.pf_run;
90 /* Initialize callbacks */
91 p_intf->pf_manage = intf_Manage;
93 /* Initialize structure */
97 p_intf->b_menu_change = 0;
99 if( p_intf->pf_open( p_intf ) )
101 intf_ErrMsg("intf error: cannot create interface");
102 module_Unneed( p_intf->p_module );
107 /* Initialize mutexes */
108 vlc_mutex_init( &p_intf->change_lock );
110 intf_WarnMsg( 1, "intf: interface initialized");
114 /*****************************************************************************
115 * intf_Manage: manage interface
116 *****************************************************************************
117 * This function has to be called regularly by the interface plugin. It
118 * checks for playlist end, module expiration, message flushing, and a few
119 * other useful things.
120 *****************************************************************************/
121 static void intf_Manage( intf_thread_t *p_intf )
123 /* Flush waiting messages */
126 /* Manage module bank */
127 module_ManageBank( );
129 vlc_mutex_lock( &p_input_bank->lock );
131 if( p_input_bank->i_count
132 && ( p_input_bank->pp_input[0]->b_error
133 || p_input_bank->pp_input[0]->b_eof ) )
135 intf_WarnMsg( 3, "intf: input thread destroyed" );
136 input_DestroyThread( p_input_bank->pp_input[0], NULL );
137 p_input_bank->pp_input[0] = NULL;
138 p_input_bank->i_count--;
141 /* If no stream is being played, try to find one */
142 if( !p_input_bank->i_count && !p_intf->b_die )
144 // vlc_mutex_lock( &p_main->p_playlist->change_lock );
146 if( !p_main->p_playlist->b_stopped )
148 /* Select the next playlist item */
149 intf_PlaylistNext( p_main->p_playlist );
151 /* don't loop by default: stop at playlist end */
152 if( p_main->p_playlist->i_index == -1 )
154 p_main->p_playlist->b_stopped = 1;
158 p_main->p_playlist->b_stopped = 0;
159 p_main->p_playlist->i_mode = PLAYLIST_FORWARD +
160 main_GetIntVariable( PLAYLIST_LOOP_VAR,
161 PLAYLIST_LOOP_DEFAULT );
162 intf_WarnMsg( 3, "intf: creating new input thread" );
163 p_input_bank->pp_input[0] =
164 input_CreateThread( &p_main->p_playlist->current, NULL );
165 p_input_bank->i_count++;
170 /* playing has been stopped: we no longer need outputs */
171 if( p_aout_bank->i_count )
173 /* FIXME kludge that does not work with several outputs */
174 aout_DestroyThread( p_aout_bank->pp_aout[0], NULL );
175 p_aout_bank->i_count--;
177 if( p_vout_bank->i_count )
179 vout_DestroyThread( p_vout_bank->pp_vout[0], NULL );
180 p_vout_bank->i_count--;
184 // vlc_mutex_unlock( &p_main->p_playlist->change_lock );
187 vlc_mutex_unlock( &p_input_bank->lock );
190 /*****************************************************************************
191 * intf_Destroy: clean interface after main loop
192 *****************************************************************************
193 * This function destroys specific interfaces and close output devices.
194 *****************************************************************************/
195 void intf_Destroy( intf_thread_t *p_intf )
197 /* Destroy interfaces */
198 p_intf->pf_close( p_intf );
201 /* Close input thread, if any (blocking) */
202 if( p_intf->p_input )
204 input_DestroyThread( p_intf->p_input, NULL );
209 module_Unneed( p_intf->p_module );
211 vlc_mutex_destroy( &p_intf->change_lock );