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 1.84 2001/12/10 04:53:11 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 *****************************************************************************/
31 #include <errno.h> /* ENOMEM */
32 #include <stdlib.h> /* free(), strtol() */
33 #include <stdio.h> /* FILE */
34 #include <string.h> /* strerror() */
35 #include <sys/types.h> /* off_t */
43 #include "stream_control.h"
44 #include "input_ext-intf.h"
46 #include "audio_output.h"
48 #include "interface.h"
49 #include "intf_playlist.h"
52 #include "video_output.h"
54 /*****************************************************************************
56 *****************************************************************************/
57 static void intf_Manage( intf_thread_t *p_intf );
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 *****************************************************************************/
65 intf_thread_t* intf_Create( void )
67 intf_thread_t * p_intf;
69 /* Allocate structure */
70 p_intf = malloc( sizeof( intf_thread_t ) );
73 intf_ErrMsg( "intf error: cannot create interface thread (%s)",
78 /* Choose the best module */
79 p_intf->p_module = module_Need( MODULE_CAPABILITY_INTF, NULL );
81 if( p_intf->p_module == NULL )
83 intf_ErrMsg( "intf error: no suitable intf module" );
88 #define f p_intf->p_module->p_functions->intf.functions.intf
89 p_intf->pf_open = f.pf_open;
90 p_intf->pf_close = f.pf_close;
91 p_intf->pf_run = f.pf_run;
94 /* Initialize callbacks */
95 p_intf->pf_manage = intf_Manage;
97 /* Initialize structure */
100 p_intf->p_input = NULL;
102 p_intf->b_menu_change = 0;
104 if( p_intf->pf_open( p_intf ) )
106 intf_ErrMsg("intf error: cannot create interface");
107 module_Unneed( p_intf->p_module );
112 /* Initialize mutexes */
113 vlc_mutex_init( &p_intf->change_lock );
115 intf_WarnMsg( 1, "intf: interface initialized");
119 /*****************************************************************************
120 * intf_Manage: manage interface
121 *****************************************************************************
122 * This function has to be called regularly by the interface plugin. It
123 * checks for playlist end, module expiration, message flushing, and a few
124 * other useful things.
125 *****************************************************************************/
126 static void intf_Manage( intf_thread_t *p_intf )
128 /* Flush waiting messages */
131 /* Manage module bank */
132 module_ManageBank( );
134 if( ( p_intf->p_input != NULL ) &&
135 ( p_intf->p_input->b_error || p_intf->p_input->b_eof ) )
137 input_DestroyThread( p_intf->p_input, NULL );
138 p_intf->p_input = NULL;
139 intf_DbgMsg("Input thread destroyed");
142 /* If no stream is being played, try to find one */
143 if( p_intf->p_input == NULL && !p_intf->b_die )
145 // vlc_mutex_lock( &p_main->p_playlist->change_lock );
147 if( !p_main->p_playlist->b_stopped )
149 /* Select the next playlist item */
150 intf_PlaylistNext( p_main->p_playlist );
152 /* don't loop by default: stop at playlist end */
153 if( p_main->p_playlist->i_index == -1 )
155 p_main->p_playlist->b_stopped = 1;
159 p_main->p_playlist->b_stopped = 0;
160 p_main->p_playlist->i_mode = PLAYLIST_FORWARD +
161 main_GetIntVariable( PLAYLIST_LOOP_VAR,
162 PLAYLIST_LOOP_DEFAULT );
164 input_CreateThread( &p_main->p_playlist->current, NULL );
169 /* playing has been stopped: we no longer need outputs */
170 if( p_aout_bank->i_count )
172 /* FIXME kludge that does not work with several outputs */
173 aout_DestroyThread( p_aout_bank->pp_aout[0], NULL );
174 p_aout_bank->i_count--;
176 if( p_vout_bank->i_count )
178 vout_DestroyThread( p_vout_bank->pp_vout[0], NULL );
179 p_vout_bank->i_count--;
183 // vlc_mutex_unlock( &p_main->p_playlist->change_lock );
187 /*****************************************************************************
188 * intf_Destroy: clean interface after main loop
189 *****************************************************************************
190 * This function destroys specific interfaces and close output devices.
191 *****************************************************************************/
192 void intf_Destroy( intf_thread_t *p_intf )
194 /* Destroy interfaces */
195 p_intf->pf_close( p_intf );
197 /* Close input thread, if any (blocking) */
198 if( p_intf->p_input )
200 input_DestroyThread( p_intf->p_input, NULL );
204 module_Unneed( p_intf->p_module );
206 vlc_mutex_destroy( &p_intf->change_lock );