]> git.sesse.net Git - vlc/blobdiff - src/interface/interface.c
* ALL: the first libvlc commit.
[vlc] / src / interface / interface.c
index 87d0e2e773c6a79f6e13c81782da6cc3e88e5c2c..54df76e3cc6c69f35a97490b79c3927375ed9754 100644 (file)
@@ -3,9 +3,10 @@
  * This library provides basic functions for threads to interact with user
  * interface, such as command line.
  *****************************************************************************
- * Copyright (C) 1998, 1999, 2000 VideoLAN
+ * Copyright (C) 1998-2001 VideoLAN
+ * $Id: interface.c,v 1.94 2002/06/01 12:32:01 sam Exp $
  *
- * Authors:
+ * Authors: Vincent Seguin <seguin@via.ecp.fr>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
 /*****************************************************************************
  * Preamble
  *****************************************************************************/
-#include "defs.h"
-
 #include <errno.h>                                                 /* ENOMEM */
 #include <stdlib.h>                                      /* free(), strtol() */
 #include <stdio.h>                                                   /* FILE */
 #include <string.h>                                            /* strerror() */
+#include <sys/types.h>                                              /* off_t */
 
-#include "config.h"
-#include "common.h"
-#include "threads.h"
-#include "mtime.h"
-#include "plugins.h"
-#include "playlist.h"
+#include <vlc/vlc.h>
 
 #include "stream_control.h"
 #include "input_ext-intf.h"
 
 #include "audio_output.h"
 
-#include "intf_msg.h"
 #include "interface.h"
-#include "intf_cmd.h"
-#include "intf_console.h"
-#include "keystrokes.h"
 
 #include "video.h"
 #include "video_output.h"
 
-#include "main.h"
-
-/*****************************************************************************
- * intf_channel_t: channel description
- *****************************************************************************
- * A 'channel' is a descriptor of an input method. It is used to switch easily
- * from source to source without having to specify the whole input thread
- * configuration. The channels array, stored in the interface thread object, is
- * loaded in intf_Create, and unloaded in intf_Destroy.
- *****************************************************************************/
-typedef struct intf_channel_s
-{
-    /* Channel description */
-    int         i_channel;            /* channel number, -1 for end of array */
-    char *      psz_description;              /* channel description (owned) */
-
-    /* Input configuration */
-    int         i_input_method;                   /* input method descriptor */
-    char *      psz_input_source;                   /* source string (owned) */
-    int         i_input_port;                                        /* port */
-    int         i_input_vlan_id;                                  /* vlan id */
-} intf_channel_t;
-
 /*****************************************************************************
  * Local prototypes
  *****************************************************************************/
-static int      LoadChannels    ( intf_thread_t *p_intf, char *psz_filename );
-static void     UnloadChannels  ( intf_thread_t *p_intf );
-static int      ParseChannel    ( intf_channel_t *p_channel, char *psz_str );
+static void Manager( intf_thread_t *p_intf );
 
 /*****************************************************************************
  * intf_Create: prepare interface before main loop
@@ -89,673 +55,145 @@ static int      ParseChannel    ( intf_channel_t *p_channel, char *psz_str );
  * This function opens output devices and creates specific interfaces. It sends
  * its own error messages.
  *****************************************************************************/
-intf_thread_t* intf_Create( void )
+intf_thread_t* intf_Create( vlc_object_t *p_this )
 {
     intf_thread_t * p_intf;
-    typedef void    ( intf_getplugin_t ) ( intf_thread_t * p_intf );
-    int             i_index;
-    int             i_best_index = 0, i_best_score = 0;
+    char *psz_name;
 
     /* Allocate structure */
-    p_intf = malloc( sizeof( intf_thread_t ) );
+    p_intf = vlc_object_create( p_this, VLC_OBJECT_INTF );
     if( !p_intf )
     {
-        intf_ErrMsg("error: %s", strerror( ENOMEM ) );
-        return( NULL );
+        msg_Err( p_this, "out of memory" );
+        return NULL;
     }
 
-    /* Get a suitable interface plugin */
-    for( i_index = 0 ; i_index < p_main->p_bank->i_plugin_count ; i_index++ )
-    {
-        /* If there's a plugin in p_info ... */
-        if( p_main->p_bank->p_info[ i_index ] != NULL )
-        {
-            /* ... and if this plugin provides the functions we want ... */
-            if( p_main->p_bank->p_info[ i_index ]->intf_GetPlugin != NULL )
-            {
-                /* ... and if this plugin has a good score ... */
-                if( p_main->p_bank->p_info[ i_index ]->i_score > i_best_score )
-                {
-                    /* ... then take it */
-                    i_best_score = p_main->p_bank->p_info[ i_index ]->i_score;
-                    i_best_index = i_index;
-                }
-            }
-        }
-    }
+    /* Choose the best module */
+    psz_name = config_GetPsz( p_intf, "intf" );
+    p_intf->p_module = module_Need( p_intf, MODULE_CAPABILITY_INTF,
+                                    psz_name, (void *)p_intf );
 
-    if( i_best_score == 0 )
+    if( psz_name ) free( psz_name );
+    if( p_intf->p_module == NULL )
     {
-        free( p_intf );
-        intf_ErrMsg( "error: no suitable plugin to create interface" );
-        return( NULL );
+        msg_Err( p_intf, "no suitable intf module" );
+        vlc_object_destroy( p_intf );
+        return NULL;
     }
 
-    /* Get the plugin functions */
-    ( (intf_getplugin_t *)
-      p_main->p_bank->p_info[ i_best_index ]->intf_GetPlugin )( p_intf );
+#define f p_intf->p_module->p_functions->intf.functions.intf
+    p_intf->pf_open       = f.pf_open;
+    p_intf->pf_close      = f.pf_close;
+    p_intf->pf_run        = f.pf_run;
+#undef f
 
     /* Initialize structure */
-    p_intf->b_die =     0;
-    p_intf->p_vout =    NULL;
-    p_intf->p_input =   NULL;
-    p_intf->p_keys =    NULL;
-
-    /* Warning level initialisation */
-    p_intf->i_warning_level = main_GetIntVariable( INTF_WARNING_VAR, INTF_WARNING_DEFAULT );
-    
-    /* Load channels - the pointer will be set to NULL on failure. The
-     * return value is ignored since the program can work without
-     * channels */
-    LoadChannels( p_intf, main_GetPszVariable( INTF_CHANNELS_VAR, INTF_CHANNELS_DEFAULT ));
-
-    /* Start interfaces */
-    p_intf->p_console = intf_ConsoleCreate();
-    if( p_intf->p_console == NULL )
-    {
-        intf_ErrMsg("error: can't create control console");
-        free( p_intf );
-        return( NULL );
-    }
-    if( p_intf->p_sys_create( p_intf ) )
-    {
-        intf_ErrMsg("error: can't create interface");
-        intf_ConsoleDestroy( p_intf->p_console );
-        free( p_intf );
-        return( NULL );
-    }
-
-    intf_Msg("Interface initialized");
-    return( p_intf );
-}
+    p_intf->b_menu        = 0;
+    p_intf->b_menu_change = 0;
 
-/*****************************************************************************
- * intf_Run
- *****************************************************************************
- * Initialization script and main interface loop.
- *****************************************************************************/
-void intf_Run( intf_thread_t *p_intf )
-{
-    char * psz_server = main_GetPszVariable( INPUT_SERVER_VAR, NULL );
-    input_config_t *    p_input_config;
+    /* Initialize mutexes */
+    vlc_mutex_init( p_intf, &p_intf->change_lock );
 
-    /* If a server was specified */
-    if( psz_server )
-    {
-        if( (p_input_config =
-              (input_config_t *)malloc( sizeof(input_config_t) )) == NULL )
-        {
-            intf_ErrMsg("Out of memory");
-        }
-        else
-        {
-            p_input_config->i_method = INPUT_METHOD_UCAST;
-            p_input_config->p_source = psz_server;
-            p_input_config->p_default_aout = p_main->p_aout;
-            p_input_config->p_default_vout = p_intf->p_vout;
+    msg_Dbg( p_intf, "interface initialized" );
 
-            p_intf->p_input = input_CreateThread( p_input_config, NULL );
-        }
-    }
-    /* Or if a file was specified */
-    else if( p_main->p_playlist->p_list != NULL )
-    {
-        if( (p_input_config =
-              (input_config_t *)malloc( sizeof(input_config_t) )) == NULL )
-        {
-            intf_ErrMsg("Out of memory");
-        }
-        else
-        {
-            p_input_config->i_method = INPUT_METHOD_FILE;
-            p_input_config->p_source = p_main->p_playlist->p_list[0]; /* FIXME ??? */
-            p_input_config->p_default_aout = p_main->p_aout;
-            p_input_config->p_default_vout = p_intf->p_vout;
+    /* An interface's parent is always the root */
+    vlc_object_attach( p_intf, p_intf->p_vlc );
 
-            p_intf->p_input = input_CreateThread( p_input_config, NULL );
-        }
-    }
-    /* Execute the initialization script - if a positive number is returned,
-     * the script could be executed but failed */
-    else if( intf_ExecScript( main_GetPszVariable( INTF_INIT_SCRIPT_VAR, INTF_INIT_SCRIPT_DEFAULT ) ) > 0 )
-    {
-        intf_ErrMsg("warning: error(s) during startup script");
-    }
-
-    /* Main loop */
-    while(!p_intf->b_die)
-    {
-        /* Flush waiting messages */
-        intf_FlushMsg();
-
-        /* Manage specific interface */
-        p_intf->p_sys_manage( p_intf );
-
-        /* Check attached threads status */
-        if( (p_intf->p_vout != NULL) && p_intf->p_vout->b_error )
-        {
-            /* FIXME: add aout error detection ?? */
-            p_intf->b_die = 1;
-        }
-        if( (p_intf->p_input != NULL) && p_intf->p_input->b_error )
-        {
-            input_DestroyThread( p_intf->p_input, NULL );
-            p_intf->p_input = NULL;
-            intf_DbgMsg("Input thread destroyed");
-        }
-
-        /* Sleep to avoid using all CPU - since some interfaces needs to access
-         * keyboard events, a 100ms delay is a good compromise */
-        msleep( INTF_IDLE_SLEEP );
-    }
+    return p_intf;
 }
 
 /*****************************************************************************
- * intf_Destroy: clean interface after main loop
+ * intf_RunThread: launch the interface thread
  *****************************************************************************
- * This function destroys specific interfaces and close output devices.
+ * This function either creates a new thread and runs the interface in it,
+ * or runs the interface in the current thread, depending on b_block.
  *****************************************************************************/
-void intf_Destroy( intf_thread_t *p_intf )
+vlc_error_t intf_RunThread( intf_thread_t *p_intf )
 {
-    p_intf_key  p_cur;
-    p_intf_key  p_next;
-    /* Destroy interfaces */
-    p_intf->p_sys_destroy( p_intf );
-    intf_ConsoleDestroy( p_intf->p_console );
-
-    /* Unload channels */
-    UnloadChannels( p_intf );
-
-    /* Destroy keymap */
-    p_cur = p_intf->p_keys;
-    while( p_cur != NULL)
+    if( p_intf->b_block )
     {
-        p_next = p_cur->next;
-        free(p_cur);
-        p_cur = p_next;
-    }
-         
-        
-        /* Free structure */
-    free( p_intf );
-}
-
-/*****************************************************************************
- * intf_SelectChannel: change channel
- *****************************************************************************
- * Kill existing input, if any, and try to open a new one, using an input
- * configuration table.
- *****************************************************************************/
-int intf_SelectChannel( intf_thread_t * p_intf, int i_channel )
-{
-    /* FIXME */
-#if 0
-    intf_channel_t *    p_channel;                                /* channel */
-
-    /* Look for channel in array */
-    if( p_intf->p_channel != NULL )
-    {
-        for( p_channel = p_intf->p_channel; p_channel->i_channel != -1; p_channel++ )
+        /* Run a manager thread, launch the interface, kill the manager */
+        if( vlc_thread_create( p_intf, "manager", Manager, 0 ) )
         {
-            if( p_channel->i_channel == i_channel )
-            {
-            /*
-             * Change channel
-             */
-
-            /* Kill existing input, if any */
-            if( p_intf->p_input != NULL )
-            {
-                input_DestroyThread( p_intf->p_input, NULL );
-            }
-
-            intf_Msg("Channel %d: %s", i_channel, p_channel->psz_description );
-
-            /* Open a new input */
-            p_intf->p_input = input_CreateThread( p_channel->i_input_method, p_channel->psz_input_source,
-                                  p_channel->i_input_port, p_channel->i_input_vlan_id,
-                                  p_intf->p_vout, p_main->p_aout, NULL );
-            return( p_intf->p_input == NULL );
-            }
+            msg_Err( p_intf, "cannot spawn manager thread" );
+            return VLC_EGENERIC;
         }
-    }
 
-    /* Channel does not exist */
-    intf_Msg("Channel %d does not exist", i_channel );
-#endif
-    return( 1 );
-}
+        p_intf->pf_run( p_intf );
 
-/*****************************************************************************
- * intf_AssignKey: assign standartkeys                                       *
- *****************************************************************************
- * This function fills in the associative array that links the key pressed   *
- * and the key we use internally. Support one extra parameter.               *
- ****************************************************************************/
-void intf_AssignKey( intf_thread_t *p_intf, int r_key, int f_key, int param)
-{
-    p_intf_key  p_cur =  p_intf->p_keys;
-    if( p_cur == NULL )
-    {
-        p_cur = (p_intf_key )(malloc ( sizeof( intf_key ) ) );
-        p_cur->received_key = r_key;
-        p_cur->forwarded.key = f_key;
-        p_cur->forwarded.param = param; 
-        p_cur->next = NULL;
-        p_intf->p_keys = p_cur;
-    } 
-    else 
-    {
-        while( p_cur->next != NULL && p_cur ->received_key != r_key)
-        {
-            p_cur = p_cur->next;
-        }
-        if( p_cur->next == NULL )
-        {   
-            p_cur->next  = ( p_intf_key )( malloc( sizeof( intf_key ) ) );
-            p_cur = p_cur->next;
-            p_cur->next = NULL;
-            p_cur->forwarded.param = param; 
-            p_cur->received_key = r_key;
-        }
-        p_cur->forwarded.key = f_key;
-    }        
-}
+        p_intf->b_die = 1;
 
-/* Basic getKey function... */
-keyparm intf_GetKey( intf_thread_t *p_intf, int r_key)
-{   
-    keyparm reply;
-    
-    p_intf_key current = p_intf->p_keys;
-    while(current != NULL && current->received_key != r_key)
-    {    
-        current = current->next;
-    }
-    if(current == NULL)
-    {   /* didn't find any key in the array */ 
-        reply.key = INTF_KEY_UNKNOWN;
-        reply.param = 0;
+        /* Do not join the thread... intf_StopThread will do it for us */
     }
     else
     {
-        reply.key = current->forwarded.key;
-        reply.param = current->forwarded.param;
-    }
-    return reply;
-}
-
-/*****************************************************************************
-* intf_AssignNormalKeys: used for normal interfaces.
-*****************************************************************************
-* This function assign the basic key to the normal keys.
-*****************************************************************************/
-
-void intf_AssignNormalKeys( intf_thread_t *p_intf)
-{
-    p_intf->p_intf_get_key = intf_GetKey;
-
-    intf_AssignKey( p_intf , 'Q', INTF_KEY_QUIT, 0);
-    intf_AssignKey( p_intf , 'q', INTF_KEY_QUIT, 0);
-    intf_AssignKey( p_intf ,  27, INTF_KEY_QUIT, 0);
-    intf_AssignKey( p_intf ,   3, INTF_KEY_QUIT, 0);
-    intf_AssignKey( p_intf , '0', INTF_KEY_SET_CHANNEL, 0);
-    intf_AssignKey( p_intf , '1', INTF_KEY_SET_CHANNEL, 1);
-    intf_AssignKey( p_intf , '2', INTF_KEY_SET_CHANNEL, 2);
-    intf_AssignKey( p_intf , '3', INTF_KEY_SET_CHANNEL, 3);
-    intf_AssignKey( p_intf , '4', INTF_KEY_SET_CHANNEL, 4);
-    intf_AssignKey( p_intf , '5', INTF_KEY_SET_CHANNEL, 5);
-    intf_AssignKey( p_intf , '6', INTF_KEY_SET_CHANNEL, 6);
-    intf_AssignKey( p_intf , '7', INTF_KEY_SET_CHANNEL, 7);
-    intf_AssignKey( p_intf , '8', INTF_KEY_SET_CHANNEL, 8);
-    intf_AssignKey( p_intf , '9', INTF_KEY_SET_CHANNEL, 9);
-    intf_AssignKey( p_intf , '0', INTF_KEY_SET_CHANNEL, 0);
-    intf_AssignKey( p_intf , '+', INTF_KEY_INC_VOLUME, 0);
-    intf_AssignKey( p_intf , '-', INTF_KEY_DEC_VOLUME, 0);
-    intf_AssignKey( p_intf , 'm', INTF_KEY_TOGGLE_VOLUME, 0);
-    intf_AssignKey( p_intf , 'M', INTF_KEY_TOGGLE_VOLUME, 0);
-    intf_AssignKey( p_intf , 'g', INTF_KEY_DEC_GAMMA, 0);
-    intf_AssignKey( p_intf , 'G', INTF_KEY_INC_GAMMA, 0);
-    intf_AssignKey( p_intf , 'c', INTF_KEY_TOGGLE_GRAYSCALE, 0);
-    intf_AssignKey( p_intf , ' ', INTF_KEY_TOGGLE_INTERFACE, 0);
-    intf_AssignKey( p_intf , 'i', INTF_KEY_TOGGLE_INFO, 0);
-    intf_AssignKey( p_intf , 's', INTF_KEY_TOGGLE_SCALING, 0);
-}   
-
-/*****************************************************************************
- * intf_ProcessKey: process standard keys
- *****************************************************************************
- * This function will process standard keys and return non 0 if the key was
- * unknown.
- *****************************************************************************/
-int intf_ProcessKey( intf_thread_t *p_intf, int g_key )
-{
-    static int i_volbackup;
-    keyparm k_reply;
-    
-    k_reply = intf_GetKey( p_intf, g_key); 
-    
-    switch( k_reply.key )
-    {
-    case INTF_KEY_QUIT:                                                  /* quit order */
-        p_intf->b_die = 1;
-        break;
-    case INTF_KEY_SET_CHANNEL:
-        /* Change channel - return code is ignored since SelectChannel displays
-         * its own error messages */
-        intf_SelectChannel( p_intf, k_reply.param );
-        break;
-    case INTF_KEY_INC_VOLUME:                                                    /* volume + */
-        if( (p_main->p_aout != NULL) && (p_main->p_aout->vol < VOLUME_MAX) )
-            p_main->p_aout->vol += VOLUME_STEP;
-        break;
-    case INTF_KEY_DEC_VOLUME:                                                    /* volume - */
-        if( (p_main->p_aout != NULL) && (p_main->p_aout->vol > VOLUME_STEP) )
-            p_main->p_aout->vol -= VOLUME_STEP;
-        break;
-    case INTF_KEY_TOGGLE_VOLUME:                                                 /* toggle mute */
-        if( (p_main->p_aout != NULL) && (p_main->p_aout->vol))
-        {
-            i_volbackup = p_main->p_aout->vol;
-            p_main->p_aout->vol = 0;
-        }
-        else if( (p_main->p_aout != NULL) && (!p_main->p_aout->vol))
-            p_main->p_aout->vol = i_volbackup;
-        break;
-    case INTF_KEY_DEC_GAMMA:                                                     /* gamma - */
-        if( (p_intf->p_vout != NULL) && (p_intf->p_vout->f_gamma > -INTF_GAMMA_LIMIT) )
-        {
-            vlc_mutex_lock( &p_intf->p_vout->change_lock );
-            p_intf->p_vout->f_gamma   -= INTF_GAMMA_STEP;
-            p_intf->p_vout->i_changes |= VOUT_GAMMA_CHANGE;
-            vlc_mutex_unlock( &p_intf->p_vout->change_lock );
-        }
-        break;
-    case INTF_KEY_INC_GAMMA:                                                     /* gamma + */
-        if( (p_intf->p_vout != NULL) && (p_intf->p_vout->f_gamma < INTF_GAMMA_LIMIT) )
-        {
-            vlc_mutex_lock( &p_intf->p_vout->change_lock );
-            p_intf->p_vout->f_gamma   += INTF_GAMMA_STEP;
-            p_intf->p_vout->i_changes |= VOUT_GAMMA_CHANGE;
-            vlc_mutex_unlock( &p_intf->p_vout->change_lock );
-        }
-        break;
-    case INTF_KEY_TOGGLE_GRAYSCALE:                                            /* toggle grayscale */
-        if( p_intf->p_vout != NULL )
+        /* Run the interface in a separate thread */
+        if( vlc_thread_create( p_intf, "interface", p_intf->pf_run, 0 ) )
         {
-            vlc_mutex_lock( &p_intf->p_vout->change_lock );
-            p_intf->p_vout->b_grayscale = !p_intf->p_vout->b_grayscale;
-            p_intf->p_vout->i_changes  |= VOUT_GRAYSCALE_CHANGE;
-            vlc_mutex_unlock( &p_intf->p_vout->change_lock );
+            msg_Err( p_intf, "cannot spawn interface thread" );
+            return VLC_EGENERIC;
         }
-        break;
-    case INTF_KEY_TOGGLE_INTERFACE:                                            /* toggle interface */
-        if( p_intf->p_vout != NULL )
-        {
-            vlc_mutex_lock( &p_intf->p_vout->change_lock );
-            p_intf->p_vout->b_interface     = !p_intf->p_vout->b_interface;
-            p_intf->p_vout->i_changes |= VOUT_INTF_CHANGE;
-            vlc_mutex_unlock( &p_intf->p_vout->change_lock );
-        }
-        break;
-    case INTF_KEY_TOGGLE_INFO:                                                 /* toggle info */
-        if( p_intf->p_vout != NULL )
-        {
-            vlc_mutex_lock( &p_intf->p_vout->change_lock );
-            p_intf->p_vout->b_info     = !p_intf->p_vout->b_info;
-            p_intf->p_vout->i_changes |= VOUT_INFO_CHANGE;
-            vlc_mutex_unlock( &p_intf->p_vout->change_lock );
-        }
-        break;
-    case INTF_KEY_TOGGLE_SCALING:                                              /* toggle scaling */
-        if( p_intf->p_vout != NULL )
-        {
-            vlc_mutex_lock( &p_intf->p_vout->change_lock );
-            p_intf->p_vout->b_scale    = !p_intf->p_vout->b_scale;
-            p_intf->p_vout->i_changes |= VOUT_SCALE_CHANGE;
-            vlc_mutex_unlock( &p_intf->p_vout->change_lock );
-        }
-        break;
-   default:                                                   /* unknown key */
-        return( 1 );
     }
 
-    return( 0 );
+    return VLC_SUCCESS;
 }
 
-/* following functions are local */
-
 /*****************************************************************************
- * LoadChannels: load channels description from a file
+ * intf_StopThread: end the interface thread
  *****************************************************************************
- * This structe describes all interface-specific data of the main (interface)
- * thread.
- * Each line of the file is a semicolon separated list of the following
- * fields :
- *      integer         channel number
- *      string          channel description
- *      integer         input method (see input.h)
- *      string          input source
- *      integer         input port
- *      integer         input vlan id
- * The last field must end with a semicolon.
- * Comments and empty lines are not explicitely allowed, but lines with parsing
- * errors are ignored without warning.
+ * This function asks the interface thread to stop.
  *****************************************************************************/
-static int LoadChannels( intf_thread_t *p_intf, char *psz_filename )
+void intf_StopThread( intf_thread_t *p_intf )
 {
-    FILE *              p_file;                                      /* file */
-    intf_channel_t *    p_channel;                        /* current channel */
-    char                psz_line[INTF_MAX_CMD_SIZE];          /* line buffer */
-    int                 i_index;                   /* channel or field index */
-
-    /* Set default value */
-    p_intf->p_channel = NULL;
-
-    /* FIXME: channels are disabled */
-    //return( 0 );
-
-    /* Open file */
-    p_file = fopen( psz_filename, "r" );
-    if( p_file == NULL )
-    {
-        intf_ErrMsg("error: can't open %s (%s)", psz_filename, strerror(errno));
-        return( 1 );
-    }
-
-    /* First pass: count number of lines */
-    for( i_index = 0; fgets( psz_line, INTF_MAX_CMD_SIZE, p_file ) != NULL; i_index++ )
+    /* Tell the interface to die */
+    if( !p_intf->b_block )
     {
-        ;
-    }
-
-    if( i_index != 0 )
-    {
-        /* Allocate array and rewind - some of the lines may be invalid, and the
-         * array will probably be larger than the actual number of channels, but
-         * it has no consequence. */
-        p_intf->p_channel = malloc( sizeof( intf_channel_t ) * i_index );
-        if( p_intf->p_channel == NULL )
-        {
-            intf_ErrMsg("error: %s", strerror(ENOMEM));
-            fclose( p_file );
-            return( 1 );
-        }
-        p_channel = p_intf->p_channel;
-        rewind( p_file );
-
-        /* Second pass: read channels descriptions */
-        while( fgets( psz_line, INTF_MAX_CMD_SIZE, p_file ) != NULL )
-        {
-            if( !ParseChannel( p_channel, psz_line ) )
-            {
-                intf_DbgMsg( "channel [%d] %s : method %d (%s:%d vlan id %d)",
-                         p_channel->i_channel, p_channel->psz_description,
-                         p_channel->i_input_method,
-                         p_channel->psz_input_source,
-                         p_channel->i_input_port, p_channel->i_input_vlan_id );
-                p_channel++;
-            }
-        }
-
-        /* Add marker at the end of the array */
-        p_channel->i_channel = -1;
+        p_intf->b_die = 1;
     }
 
-    /* Close file */
-    fclose( p_file );
-    return( 0 );
+    /* Wait for the thread to exit */
+    vlc_thread_join( p_intf );
 }
 
 /*****************************************************************************
- * UnloadChannels: unload channels description
+ * intf_Destroy: clean interface after main loop
  *****************************************************************************
- * This function free all resources allocated by LoadChannels, if any.
+ * This function destroys specific interfaces and close output devices.
  *****************************************************************************/
-static void UnloadChannels( intf_thread_t *p_intf )
+void intf_Destroy( intf_thread_t *p_intf )
 {
-    int i_channel;                                          /* channel index */
+    /* Destroy interface */
+    p_intf->pf_close( p_intf );
 
-    if( p_intf->p_channel != NULL )
-    {
-        /* Free allocated strings */
-        for( i_channel = 0;
-             p_intf->p_channel[ i_channel ].i_channel != -1;
-             i_channel++ )
-        {
-            if( p_intf->p_channel[ i_channel ].psz_description != NULL )
-            {
-                free( p_intf->p_channel[ i_channel ].psz_description );
-            }
-            if( p_intf->p_channel[ i_channel ].psz_input_source != NULL )
-            {
-                free( p_intf->p_channel[ i_channel ].psz_input_source );
-            }
-        }
+    /* Unlock module */
+    module_Unneed( p_intf->p_module );
 
-        /* Free array */
-        free( p_intf->p_channel );
-        p_intf->p_channel = NULL;
-    }
+    vlc_mutex_destroy( &p_intf->change_lock );
+
+    /* Free structure */
+    vlc_object_destroy( p_intf );
 }
 
+/* Following functions are local */
 
 /*****************************************************************************
- * ParseChannel: parse a channel description line
+ * Manager: helper thread for blocking interfaces
  *****************************************************************************
- * See LoadChannels. This function return non 0 on parsing error.
+ * If the interface is launched in the main thread, it will not listen to
+ * p_vlc->b_die events because it is only supposed to listen to p_intf->b_die.
+ * This thread takes care of the matter.
  *****************************************************************************/
-static int ParseChannel( intf_channel_t *p_channel, char *psz_str )
+static void Manager( intf_thread_t *p_intf )
 {
-    char *      psz_index;                              /* current character */
-    char *      psz_end;                           /* end pointer for strtol */
-    int         i_field;                        /* field number, -1 on error */
-    int         i_field_length;             /* field length, for text fields */
-
-    /* Set some default fields */
-    p_channel->i_channel =              0;
-    p_channel->psz_description =        NULL;
-    p_channel->i_input_method =         0;
-    p_channel->psz_input_source =       NULL;
-    p_channel->i_input_port =           0;
-    p_channel->i_input_vlan_id =        0;
-
-    /* Parse string */
-    i_field = 0;
-    for( psz_index = psz_str; (i_field != -1) && (*psz_index != '\0'); psz_index++ )
+    while( !p_intf->b_die )
     {
-        if( *psz_index == ';' )
-        {
-            /* Mark end of field */
-            *psz_index = '\0';
-
-            /* Parse field */
-            switch( i_field++ )
-            {
-            case 0:                                        /* channel number */
-                p_channel->i_channel = strtol( psz_str, &psz_end, 0);
-                if( (*psz_str == '\0') || (*psz_end != '\0') )
-                {
-                    i_field = -1;
-                }
-                break;
-            case 1:                                   /* channel description */
-                i_field_length = strlen( psz_str );
-                if( i_field_length != 0 )
-                {
-                    p_channel->psz_description = malloc( i_field_length + 1 );
-                    if( p_channel->psz_description == NULL )
-                    {
-                        intf_ErrMsg("error: %s", strerror( ENOMEM ));
-                        i_field = -1;
-                    }
-                    else
-                    {
-                        strcpy( p_channel->psz_description, psz_str );
-                    }
-                }
-                break;
-            case 2:                                          /* input method */
-                p_channel->i_input_method = strtol( psz_str, &psz_end, 0);
-                if( (*psz_str == '\0') || (*psz_end != '\0') )
-                {
-                    i_field = -1;
-                }
-                break;
-            case 3:                                          /* input source */
-                i_field_length = strlen( psz_str );
-                if( i_field_length != 0 )
-                {
-                    p_channel->psz_input_source = malloc( i_field_length + 1 );
-                    if( p_channel->psz_input_source == NULL )
-                    {
-                        intf_ErrMsg("error: %s", strerror( ENOMEM ));
-                        i_field = -1;
-                    }
-                    else
-                    {
-                        strcpy( p_channel->psz_input_source, psz_str );
-                    }
-                }
-                break;
-            case 4:                                            /* input port */
-                p_channel->i_input_port = strtol( psz_str, &psz_end, 0);
-                if( (*psz_str == '\0') || (*psz_end != '\0') )
-                {
-                    i_field = -1;
-                }
-                break;
-            case 5:                                          /* input vlan id */
-                p_channel->i_input_vlan_id = strtol( psz_str, &psz_end, 0);
-                if( (*psz_str == '\0') || (*psz_end != '\0') )
-                {
-                    i_field = -1;
-                }
-                break;
-                /* ... following fields are ignored */
-            }
-
-            /* Set new beginning of field */
-            psz_str = psz_index + 1;
-        }
-    }
+        msleep( INTF_IDLE_SLEEP );
 
-    /* At least the first three fields must be parsed sucessfully for function
-     * success. Other parsing errors are returned using i_field = -1. */
-    if( i_field < 3 )
-    {
-        /* Function fails. Free allocated strings */
-        if( p_channel->psz_description != NULL )
-        {
-            free( p_channel->psz_description );
-        }
-        if( p_channel->psz_input_source != NULL )
+        if( p_intf->p_vlc->b_die )
         {
-            free( p_channel->psz_input_source );
+            p_intf->b_die = 1;
+            return;
         }
-        return( 1 );
     }
-
-    /* Return success */
-    return( 0 );
 }
+