vlc_interface.h

/*****************************************************************************
 * vlc_interface.h: interface access for other threads
 * This library provides basic functions for threads to interact with user
 * interface, such as message output.
 *****************************************************************************
 * Copyright (C) 1999, 2000 VideoLAN
 * $Id: vlc_interface.h,v 1.8 2003/10/29 17:32:54 zorglub Exp $
 *
 * 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
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

typedef struct intf_dialog_args_t intf_dialog_args_t;

/**
 * \file
 * This file contains structures and function prototypes for 
 * interface management in vlc 
 */


/*****************************************************************************
 * intf_thread_t: describe an interface thread
 *****************************************************************************
 * This struct describes all interface-specific data of the main (interface)
 * thread.
 *****************************************************************************/

/**
 * \defgroup vlc_interface Interface
 * These functions and structures are for interface management
 * @{
 */
struct intf_thread_t
{
    VLC_COMMON_MEMBERS

    /* Thread properties and locks */
    vlc_bool_t          b_block;

    /* Specific interfaces */
    intf_console_t *    p_console;                               /** console */
    intf_sys_t *        p_sys;                          /** system interface */

    /** Interface module */
    module_t *   p_module;
    void      ( *pf_run )    ( intf_thread_t * ); /** Run function */

    /** Specific for dialogs providers */
    void ( *pf_show_dialog ) ( intf_thread_t *, int, int,
                               intf_dialog_args_t * );

    /* XXX: new message passing stuff will go here */
    vlc_mutex_t  change_lock;
    vlc_bool_t   b_menu_change;
    vlc_bool_t   b_menu;

    /* Provides the ability to switch an interface on the fly */
    char *psz_switch_intf;
};

/*****************************************************************************
 * intf_dialog_args_t: arguments structure passed to a dialogs provider.
 *****************************************************************************
 * This struct describes the arguments passed to the dialogs provider.
 * For now they are only used with INTF_DIALOG_FILE_GENERIC.
 *****************************************************************************/
struct intf_dialog_args_t
{
    char *psz_title;

    vlc_bool_t  b_blocking;
    vlc_bool_t  b_ready;
    vlc_mutex_t lock;
    vlc_cond_t  wait;

    char **psz_results;
    int  i_results;

    void (*pf_callback) ( intf_dialog_args_t * );
    void *p_arg;

    /* Specifically for INTF_DIALOG_FILE_GENERIC */
    char *psz_extensions;
    vlc_bool_t b_save;
    vlc_bool_t b_multiple;
};

/*****************************************************************************
 * Prototypes
 *****************************************************************************/
#define intf_Create(a,b) __intf_Create(VLC_OBJECT(a),b)
VLC_EXPORT( intf_thread_t *, __intf_Create,     ( vlc_object_t *, const char * ) );
VLC_EXPORT( int,               intf_RunThread,  ( intf_thread_t * ) );
VLC_EXPORT( void,              intf_StopThread, ( intf_thread_t * ) );
VLC_EXPORT( void,              intf_Destroy,    ( intf_thread_t * ) );

/*@}*/

/*****************************************************************************
 * Macros
 *****************************************************************************/
#if defined( WIN32 ) && !defined( UNDER_CE )
#    define CONSOLE_INTRO_MSG \
         AllocConsole(); \
         freopen( "CONOUT$", "w", stdout ); \
         freopen( "CONOUT$", "w", stderr ); \
         freopen( "CONIN$", "r", stdin ); \
         msg_Info( p_intf, COPYRIGHT_MESSAGE ); \
         msg_Info( p_intf, _("\nWarning: if you can't access the GUI " \
                             "anymore, open a dos command box, go to the " \
                             "directory where you installed VLC and run " \
                             "\"vlc -I wxwin\"\n") )
#else
#    define CONSOLE_INTRO_MSG
#endif

/* Interface dialog ids for dialog providers */
#define INTF_DIALOG_FILE_SIMPLE 1
#define INTF_DIALOG_FILE        2
#define INTF_DIALOG_DISC        3
#define INTF_DIALOG_NET         4
#define INTF_DIALOG_SAT         5

#define INTF_DIALOG_STREAM     8

#define INTF_DIALOG_PLAYLIST   10
#define INTF_DIALOG_MESSAGES   11
#define INTF_DIALOG_FILEINFO   12
#define INTF_DIALOG_PREFS      13

#define INTF_DIALOG_POPUPMENU  20

#define INTF_DIALOG_FILE_GENERIC 30

#define INTF_DIALOG_EXIT       99

/* Useful text messages shared by interfaces */
#define INTF_ABOUT_MSG \
    _( "VLC is an open-source and cross-platform multimedia " \
       "player for various audio and video formats (MPEG-1, MPEG-2, MPEG-4, " \
       "DivX, mp3, Ogg, ...) as well as DVDs, VCDs, CD audio, and various " \
       "streaming protocols.\n\n" \
       "VLC is also a streaming server with transcoding capabilities " \
       "(UDP unicast and multicast, HTTP, ...) mainly designed for " \
       "high-bandwidth networks.\n\n"\
       "For more information, have a look at the web site." )