skin_main.cpp

uclinux 下的vlc播放器源代码

/*****************************************************************************
 * skin_main.cpp
 *****************************************************************************
 * Copyright (C) 2003 the VideoLAN team
 * $Id: skin_main.cpp 18266 2006-12-04 15:15:52Z damienf $
 *
 * Authors: Cyril Deguet     <[e-mail]>
 *          Olivier Teulière <[e-mail]>
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/

#include <stdlib.h>
#include <vlc/input.h>
#include "dialogs.hpp"
#include "os_factory.hpp"
#include "os_loop.hpp"
#include "var_manager.hpp"
#include "vlcproc.hpp"
#include "theme_loader.hpp"
#include "theme.hpp"
#include "theme_repository.hpp"
#include "../parser/interpreter.hpp"
#include "../commands/async_queue.hpp"
#include "../commands/cmd_quit.hpp"
#include "../commands/cmd_dialogs.hpp"
#include "../commands/cmd_minimize.hpp"


//---------------------------------------------------------------------------
// Exported interface functions.
//---------------------------------------------------------------------------
#ifdef WIN32_SKINS
extern "C" __declspec( dllexport )
    int __VLC_SYMBOL( vlc_entry ) ( module_t *p_module );
#endif


//---------------------------------------------------------------------------
// Local prototypes
//---------------------------------------------------------------------------
static int  Open  ( vlc_object_t * );
static void Close ( vlc_object_t * );
static void Run   ( intf_thread_t * );

static int DemuxOpen( vlc_object_t * );
static int Demux( demux_t * );
static int DemuxControl( demux_t *, int, va_list );

//---------------------------------------------------------------------------
// Prototypes for configuration callbacks
//---------------------------------------------------------------------------
#ifdef WIN32
static int onSystrayChange( vlc_object_t *pObj, const char *pVariable,
                            vlc_value_t oldVal, vlc_value_t newVal,
                            void *pParam );
static int onTaskBarChange( vlc_object_t *pObj, const char *pVariable,
                            vlc_value_t oldVal, vlc_value_t newVal,
                            void *pParam );
#endif

//---------------------------------------------------------------------------
// Open: initialize interface
//---------------------------------------------------------------------------
static int Open( vlc_object_t *p_this )
{
    intf_thread_t *p_intf = (intf_thread_t *)p_this;

    // Allocate instance and initialize some members
    p_intf->p_sys = (intf_sys_t *) malloc( sizeof( intf_sys_t ) );
    if( p_intf->p_sys == NULL )
    {
        msg_Err( p_intf, "out of memory" );
        return( VLC_ENOMEM );
    };

    p_intf->pf_run = Run;

    // Suscribe to messages bank
    p_intf->p_sys->p_sub = msg_Subscribe( p_intf, MSG_QUEUE_NORMAL );

    p_intf->p_sys->p_input = NULL;
    p_intf->p_sys->p_playlist = (playlist_t *)vlc_object_find( p_intf,
        VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
    if( p_intf->p_sys->p_playlist == NULL )
    {
        msg_Err( p_intf, "No playlist object found" );
        msg_Unsubscribe( p_intf, p_intf->p_sys->p_sub );
        return VLC_EGENERIC;
    }

    // Initialize "singleton" objects
    p_intf->p_sys->p_logger = NULL;
    p_intf->p_sys->p_queue = NULL;
    p_intf->p_sys->p_dialogs = NULL;
    p_intf->p_sys->p_interpreter = NULL;
    p_intf->p_sys->p_osFactory = NULL;
    p_intf->p_sys->p_osLoop = NULL;
    p_intf->p_sys->p_varManager = NULL;
    p_intf->p_sys->p_vlcProc = NULL;
    p_intf->p_sys->p_repository = NULL;

    // No theme yet
    p_intf->p_sys->p_theme = NULL;

    // Create a variable to be notified of skins to be loaded
    var_Create( p_intf, "skin-to-load", VLC_VAR_STRING );

    // Initialize singletons
    if( OSFactory::instance( p_intf ) == NULL )
    {
        msg_Err( p_intf, "cannot initialize OSFactory" );
        vlc_object_release( p_intf->p_sys->p_playlist );
        msg_Unsubscribe( p_intf, p_intf->p_sys->p_sub );
        return VLC_EGENERIC;
    }
    if( AsyncQueue::instance( p_intf ) == NULL )
    {
        msg_Err( p_intf, "cannot initialize AsyncQueue" );
        vlc_object_release( p_intf->p_sys->p_playlist );
        msg_Unsubscribe( p_intf, p_intf->p_sys->p_sub );
        return VLC_EGENERIC;
    }
    if( Interpreter::instance( p_intf ) == NULL )
    {
        msg_Err( p_intf, "cannot instanciate Interpreter" );
        vlc_object_release( p_intf->p_sys->p_playlist );
        msg_Unsubscribe( p_intf, p_intf->p_sys->p_sub );
        return VLC_EGENERIC;
    }
    if( VarManager::instance( p_intf ) == NULL )
    {
        msg_Err( p_intf, "cannot instanciate VarManager" );
        vlc_object_release( p_intf->p_sys->p_playlist );
        msg_Unsubscribe( p_intf, p_intf->p_sys->p_sub );
        return VLC_EGENERIC;
    }
    if( VlcProc::instance( p_intf ) == NULL )
    {
        msg_Err( p_intf, "cannot initialize VLCProc" );
        vlc_object_release( p_intf->p_sys->p_playlist );
        msg_Unsubscribe( p_intf, p_intf->p_sys->p_sub );
        return VLC_EGENERIC;
    }
    Dialogs::instance( p_intf );
    ThemeRepository::instance( p_intf );

    // We support play on start
    p_intf->b_play = VLC_TRUE;

    return( VLC_SUCCESS );
}

//---------------------------------------------------------------------------
// Close: destroy interface
//---------------------------------------------------------------------------
static void Close( vlc_object_t *p_this )
{
    intf_thread_t *p_intf = (intf_thread_t *)p_this;

    // Destroy "singleton" objects
    OSFactory::instance( p_intf )->destroyOSLoop();
    ThemeRepository::destroy( p_intf );
    Dialogs::destroy( p_intf );
    Interpreter::destroy( p_intf );
    AsyncQueue::destroy( p_intf );
    VarManager::destroy( p_intf );
    VlcProc::destroy( p_intf );
    OSFactory::destroy( p_intf );

    if( p_intf->p_sys->p_playlist )
    {
        vlc_object_release( p_intf->p_sys->p_playlist );
    }

    // Unsubscribe from messages bank
    msg_Unsubscribe( p_intf, p_intf->p_sys->p_sub );

    // Destroy structure
    free( p_intf->p_sys );
}


//---------------------------------------------------------------------------
// Run: main loop
//---------------------------------------------------------------------------
static void Run( intf_thread_t *p_intf )
{
    // Load a theme
    ThemeLoader *pLoader = new ThemeLoader( p_intf );
    char *skin_last = config_GetPsz( p_intf, "skins2-last" );

    if( !skin_last || !*skin_last || !pLoader->load( skin_last ) )
    {
        // Get the resource path and try to load the default skin
        OSFactory *pOSFactory = OSFactory::instance( p_intf );
        const list<string> &resPath = pOSFactory->getResourcePath();
        const string &sep = pOSFactory->getDirSeparator();

        list<string>::const_iterator it;
        for( it = resPath.begin(); it != resPath.end(); it++ )
        {
            string path = (*it) + sep + "default.vlt";
            if( pLoader->load( path ) )
            {
                // Theme loaded successfully
                break;
            }
        }
        if( it == resPath.end() )
        {
            // Last chance: the user can select a new theme file
            if( Dialogs::instance( p_intf ) )
            {
                CmdDlgChangeSkin *pCmd = new CmdDlgChangeSkin( p_intf );
                AsyncQueue *pQueue = AsyncQueue::instance( p_intf );
                pQueue->push( CmdGenericPtr( pCmd ) );
            }
            else
            {
                // No dialogs provider, just quit...
                CmdQuit *pCmd = new CmdQuit( p_intf );
                AsyncQueue *pQueue = AsyncQueue::instance( p_intf );
                pQueue->push( CmdGenericPtr( pCmd ) );
                msg_Err( p_intf,
                         "cannot show the \"open skin\" dialog: exiting...");
            }