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 1.85 2001/12/30 07:09:56 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 */
96 p_intf->p_input = NULL;
98 p_intf->b_menu_change = 0;
100 if( p_intf->pf_open( p_intf ) )
102 intf_ErrMsg("intf error: cannot create interface");
103 module_Unneed( p_intf->p_module );
108 /* Initialize mutexes */
109 vlc_mutex_init( &p_intf->change_lock );
111 intf_WarnMsg( 1, "intf: interface initialized");
115 /*****************************************************************************
116 * intf_Manage: manage interface
117 *****************************************************************************
118 * This function has to be called regularly by the interface plugin. It
119 * checks for playlist end, module expiration, message flushing, and a few
120 * other useful things.
121 *****************************************************************************/
122 static void intf_Manage( intf_thread_t *p_intf )
124 /* Flush waiting messages */
127 /* Manage module bank */
128 module_ManageBank( );
130 if( ( p_intf->p_input != NULL ) &&
131 ( p_intf->p_input->b_error || p_intf->p_input->b_eof ) )
133 input_DestroyThread( p_intf->p_input, NULL );
134 p_intf->p_input = NULL;
135 intf_DbgMsg("Input thread destroyed");
138 /* If no stream is being played, try to find one */
139 if( p_intf->p_input == NULL && !p_intf->b_die )
141 // vlc_mutex_lock( &p_main->p_playlist->change_lock );
143 if( !p_main->p_playlist->b_stopped )
145 /* Select the next playlist item */
146 intf_PlaylistNext( p_main->p_playlist );
148 /* don't loop by default: stop at playlist end */
149 if( p_main->p_playlist->i_index == -1 )
151 p_main->p_playlist->b_stopped = 1;
155 p_main->p_playlist->b_stopped = 0;
156 p_main->p_playlist->i_mode = PLAYLIST_FORWARD +
157 main_GetIntVariable( PLAYLIST_LOOP_VAR,
158 PLAYLIST_LOOP_DEFAULT );
160 input_CreateThread( &p_main->p_playlist->current, NULL );
165 /* playing has been stopped: we no longer need outputs */
166 if( p_aout_bank->i_count )
168 /* FIXME kludge that does not work with several outputs */
169 aout_DestroyThread( p_aout_bank->pp_aout[0], NULL );
170 p_aout_bank->i_count--;
172 if( p_vout_bank->i_count )
174 vout_DestroyThread( p_vout_bank->pp_vout[0], NULL );
175 p_vout_bank->i_count--;
179 // vlc_mutex_unlock( &p_main->p_playlist->change_lock );
183 /*****************************************************************************
184 * intf_Destroy: clean interface after main loop
185 *****************************************************************************
186 * This function destroys specific interfaces and close output devices.
187 *****************************************************************************/
188 void intf_Destroy( intf_thread_t *p_intf )
190 /* Destroy interfaces */
191 p_intf->pf_close( p_intf );
193 /* Close input thread, if any (blocking) */
194 if( p_intf->p_input )
196 input_DestroyThread( p_intf->p_input, NULL );
200 module_Unneed( p_intf->p_module );
202 vlc_mutex_destroy( &p_intf->change_lock );