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 1.88 2002/02/15 13:32:54 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 /* Initialize mutexes */
100 vlc_mutex_init( &p_intf->change_lock );
102 intf_WarnMsg( 1, "intf: interface initialized");
106 /*****************************************************************************
107 * intf_Manage: manage interface
108 *****************************************************************************
109 * This function has to be called regularly by the interface plugin. It
110 * checks for playlist end, module expiration, message flushing, and a few
111 * other useful things.
112 *****************************************************************************/
113 static void intf_Manage( intf_thread_t *p_intf )
115 /* Flush waiting messages */
118 /* Manage module bank */
119 module_ManageBank( );
121 vlc_mutex_lock( &p_input_bank->lock );
123 if( p_input_bank->i_count )
126 input_thread_t *p_input;
128 for( i_input = 0; i_input < p_input_bank->i_count; i_input++ )
130 p_input = p_input_bank->pp_input[i_input];
132 if( p_input->i_status == THREAD_OVER )
134 /* XXX: completely stupid ! */
135 input_DestroyThread( p_input );
136 p_input_bank->pp_input[i_input] = NULL;
137 p_input_bank->i_count--;
139 else if( ( p_input->i_status == THREAD_READY
140 || p_input->i_status == THREAD_ERROR )
141 && ( p_input->b_error || p_input->b_eof ) )
143 input_StopThread( p_input, NULL );
148 /* If no stream is being played, try to find one */
151 // vlc_mutex_lock( &p_main->p_playlist->change_lock );
153 if( !p_main->p_playlist->b_stopped )
155 /* Select the next playlist item */
156 intf_PlaylistNext( p_main->p_playlist );
158 /* don't loop by default: stop at playlist end */
159 if( p_main->p_playlist->i_index == -1 )
161 p_main->p_playlist->b_stopped = 1;
165 input_thread_t *p_input;
167 p_main->p_playlist->b_stopped = 0;
168 p_main->p_playlist->i_mode = PLAYLIST_FORWARD +
169 main_GetIntVariable( PLAYLIST_LOOP_VAR,
170 PLAYLIST_LOOP_DEFAULT );
171 intf_WarnMsg( 3, "intf: creating new input thread" );
172 p_input = input_CreateThread( &p_main->p_playlist->current,
174 if( p_input != NULL )
176 p_input_bank->pp_input[ p_input_bank->i_count ] = p_input;
177 p_input_bank->i_count++;
183 /* playing has been stopped: we no longer need outputs */
184 if( p_aout_bank->i_count )
186 /* FIXME kludge that does not work with several outputs */
187 aout_DestroyThread( p_aout_bank->pp_aout[0], NULL );
188 p_aout_bank->i_count--;
190 if( p_vout_bank->i_count )
192 vout_DestroyThread( p_vout_bank->pp_vout[0], NULL );
193 p_vout_bank->i_count--;
197 // vlc_mutex_unlock( &p_main->p_playlist->change_lock );
200 vlc_mutex_unlock( &p_input_bank->lock );
203 /*****************************************************************************
204 * intf_Destroy: clean interface after main loop
205 *****************************************************************************
206 * This function destroys specific interfaces and close output devices.
207 *****************************************************************************/
208 void intf_Destroy( intf_thread_t *p_intf )
210 /* Destroy interfaces */
211 p_intf->pf_close( p_intf );
214 /* Close input thread, if any (blocking) */
215 if( p_intf->p_input )
217 input_DestroyThread( p_intf->p_input, NULL );
222 module_Unneed( p_intf->p_module );
224 vlc_mutex_destroy( &p_intf->change_lock );