qte_main.cpp
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上传日期:2009-03-27
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- /*****************************************************************************
- * qte_main.c : QT Embedded wrapper for gte_main
- *****************************************************************************
- * Copyright (C) 2003 VideoLAN
- * $Id: qte_main.cpp 7471 2004-04-24 16:28:21Z jpsaman $
- *
- * Authors: Jean-Paul Saman <jpsaman@wxs.nl>
- *
- * 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.
- *****************************************************************************/
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- extern "C"
- {
- #include <vlc/vlc.h>
- #include <stdlib.h> /* atexit() */
- }
- #include <qapplication.h>
- #include <qpainter.h>
- extern "C"
- {
- typedef struct qte_thread_t
- {
- VLC_COMMON_MEMBERS
- QApplication* p_qte_application;
- QWidget* p_qte_widget;
- bool b_gui_server;
- } qte_thread_t;
- /*****************************************************************************
- * Local prototypes.
- *****************************************************************************/
- static int Open ( vlc_object_t * );
- static void Close ( vlc_object_t * );
- static void QteMain ( qte_thread_t * );
- /*****************************************************************************
- * Local variables (mutex-protected).
- *****************************************************************************/
- static int i_refcount = 0;
- static qte_thread_t * p_qte_main = NULL;
- /*****************************************************************************
- * Module descriptor
- *****************************************************************************/
- #define STANDALONE_TEXT N_("Run as standalone Qt/Embedded GUI Server")
- #define STANDALONE_LONGTEXT N_("Use this option to run as standalone "
- "Qt/Embedded GUI Server. This option is equivalent to the -qws option "
- "from normal Qt.")
- vlc_module_begin();
- set_description( _("Qt Embedded GUI helper") );
- set_capability( "gui-helper", 90 );
- add_bool( "qte-guiserver", 0, NULL, STANDALONE_TEXT, STANDALONE_LONGTEXT, VLC_FALSE );
- add_shortcut( "qte" );
- set_callbacks( Open, Close );
- vlc_module_end();
- } /* extern "C" */
- /*****************************************************************************
- * Open: initialize and create window
- *****************************************************************************/
- static int Open( vlc_object_t *p_this )
- {
- vlc_value_t lockval;
- /* FIXME: put this in the module (de)initialization ASAP */
- var_Create( p_this->p_libvlc, "qte", VLC_VAR_MUTEX );
- var_Get( p_this->p_libvlc, "qte", &lockval );
- vlc_mutex_lock( (vlc_mutex_t *) lockval.p_address );
- if( i_refcount > 0 )
- {
- i_refcount++;
- vlc_mutex_unlock( (vlc_mutex_t *) lockval.p_address );
- return VLC_SUCCESS;
- }
- p_qte_main = (qte_thread_t *) vlc_object_create( p_this, sizeof(qte_thread_t) );
- /* Launch the QApplication::exec() thread. It will not return until the
- * application is properly initialized, which ensures us thread safety. */
- if( vlc_thread_create( p_qte_main, "qte_main", QteMain,
- VLC_THREAD_PRIORITY_LOW, VLC_TRUE ) )
- {
- vlc_object_destroy( p_qte_main );
- i_refcount--;
- vlc_mutex_unlock( (vlc_mutex_t *) lockval.p_address );
- var_Destroy( p_this->p_libvlc, "qte" );
- return VLC_ETHREAD;
- }
- i_refcount++;
- vlc_mutex_unlock( (vlc_mutex_t *) lockval.p_address );
- vlc_object_attach( p_qte_main, p_this );
- msg_Dbg( p_this, "qte_main running" );
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * Close: destroy interface window
- *****************************************************************************/
- static void Close( vlc_object_t *p_this )
- {
- vlc_value_t lockval;
- var_Get( p_this->p_libvlc, "qte", &lockval );
- vlc_mutex_lock( (vlc_mutex_t *) lockval.p_address );
- i_refcount--;
- if( i_refcount > 0 )
- {
- vlc_mutex_unlock( (vlc_mutex_t *) lockval.p_address );
- var_Destroy( p_this->p_libvlc, "qte" );
- return;
- }
- p_qte_main->p_qte_application->quit();
- /* Cleanup allocated classes. */
- delete p_qte_main->p_qte_widget;
- delete p_qte_main->p_qte_application;
- msg_Dbg( p_this, "Detaching qte_main" );
- vlc_object_detach( p_qte_main );
- vlc_object_destroy( p_qte_main );
- p_qte_main = NULL;
- vlc_mutex_unlock( (vlc_mutex_t *) lockval.p_address );
- var_Destroy( p_this->p_libvlc, "qte" );
- }
- /*****************************************************************************
- * QteMain: Qt Embedded thread
- *****************************************************************************
- * this part of the interface is in a separate thread so that we can call
- * qte_main() from within it without annoying the rest of the program.
- *****************************************************************************/
- static void QteMain( qte_thread_t *p_this )
- {
- int i_argc = 1;
- p_this->b_gui_server = VLC_FALSE;
- if( config_GetInt( p_this, "qte-guiserver" ) )
- {
- msg_Dbg( p_this, "Running as Qt Embedded standalone GuiServer" );
- p_this->b_gui_server = VLC_TRUE;
- }
- /* Run as standalone GuiServer or as GuiClient. */
- QApplication* pApp = new QApplication(i_argc, NULL,
- (p_this->b_gui_server ? (QApplication::GuiServer):(QApplication::GuiClient)) );
- if(pApp)
- {
- p_this->p_qte_application = pApp;
- }
- QWidget* pWidget = new QWidget(0, _("video") );
- if(pWidget)
- {
- p_this->p_qte_widget = pWidget;
- }
- /* signal the creation of the window */
- p_this->p_qte_application->setMainWidget(p_this->p_qte_widget);
- p_this->p_qte_widget->show();
- vlc_thread_ready( p_this );
- p_this->p_qte_application->exec();
- }