interface.c
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上传日期:2009-03-27
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文件大小:15k
- /*****************************************************************************
- * interface.c: interface access for other threads
- * This library provides basic functions for threads to interact with user
- * interface, such as command line.
- *****************************************************************************
- * Copyright (C) 1998-2004 VideoLAN
- * $Id: interface.c 8481 2004-08-21 11:47:04Z ipkiss $
- *
- * 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.
- *****************************************************************************/
- /**
- * file
- * This file contains functions related to interface management
- */
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #include <stdlib.h> /* free(), strtol() */
- #include <stdio.h> /* FILE */
- #include <string.h> /* strerror() */
- #include <vlc/vlc.h>
- #include <vlc/input.h>
- #include "audio_output.h"
- #include "vlc_interface.h"
- #include "vlc_video.h"
- #include "video_output.h"
- #ifdef SYS_DARWIN
- # include "Cocoa/Cocoa.h"
- #endif /* SYS_DARWIN */
- /*****************************************************************************
- * Local prototypes
- *****************************************************************************/
- static void Manager( intf_thread_t *p_intf );
- static void RunInterface( intf_thread_t *p_intf );
- static int SwitchIntfCallback( vlc_object_t *, char const *,
- vlc_value_t , vlc_value_t , void * );
- static int AddIntfCallback( vlc_object_t *, char const *,
- vlc_value_t , vlc_value_t , void * );
- #ifdef SYS_DARWIN
- /*****************************************************************************
- * VLCApplication interface
- *****************************************************************************/
- @interface VLCApplication : NSApplication
- {
- }
- @end
- #endif
- /*****************************************************************************
- * intf_Create: prepare interface before main loop
- *****************************************************************************
- * This function opens output devices and creates specific interfaces. It sends
- * its own error messages.
- *****************************************************************************/
- /**
- * Create the interface, and prepare it for main loop.
- *
- * param p_this the calling vlc_object_t
- * param psz_module a prefered interface module
- * return a pointer to the created interface thread, NULL on error
- */
- intf_thread_t* __intf_Create( vlc_object_t *p_this, const char *psz_module )
- {
- intf_thread_t * p_intf;
- /* Allocate structure */
- p_intf = vlc_object_create( p_this, VLC_OBJECT_INTF );
- if( !p_intf )
- {
- msg_Err( p_this, "out of memory" );
- return NULL;
- }
- p_intf->pf_request_window = NULL;
- p_intf->pf_release_window = NULL;
- p_intf->pf_control_window = NULL;
- p_intf->b_play = VLC_FALSE;
- /* Choose the best module */
- p_intf->p_module = module_Need( p_intf, "interface", psz_module, 0 );
- if( p_intf->p_module == NULL )
- {
- msg_Err( p_intf, "no suitable intf module" );
- vlc_object_destroy( p_intf );
- return NULL;
- }
- /* Initialize structure */
- p_intf->b_menu = VLC_FALSE;
- p_intf->b_menu_change = VLC_FALSE;
- /* Initialize mutexes */
- vlc_mutex_init( p_intf, &p_intf->change_lock );
- msg_Dbg( p_intf, "interface initialized" );
- /* Attach interface to its parent object */
- vlc_object_attach( p_intf, p_this );
- return p_intf;
- }
- /*****************************************************************************
- * intf_RunThread: launch the interface thread
- *****************************************************************************
- * 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.
- *****************************************************************************/
- /**
- * Run the interface thread.
- *
- * If b_block is not set, runs the interface in the thread, else,
- * creates a new thread and runs the interface.
- * param p_intf the interface thread
- * return VLC_SUCCESS on success, an error number else
- */
- int intf_RunThread( intf_thread_t *p_intf )
- {
- #ifdef SYS_DARWIN
- NSAutoreleasePool * o_pool;
- if( p_intf->b_block )
- {
- /* This is the primary intf */
- /* Run a manager thread, launch the interface, kill the manager */
- if( vlc_thread_create( p_intf, "manager", Manager,
- VLC_THREAD_PRIORITY_LOW, VLC_FALSE ) )
- {
- msg_Err( p_intf, "cannot spawn manager thread" );
- return VLC_EGENERIC;
- }
- }
- if( p_intf->b_block && strncmp( p_intf->p_module->psz_shortname, "clivlc", 6) )
- {
- o_pool = [[NSAutoreleasePool alloc] init];
- [VLCApplication sharedApplication];
- }
- if( p_intf->b_block && ( !strncmp( p_intf->p_module->psz_shortname, "macosx" , 6 ) ||
- !strncmp( p_intf->p_vlc->psz_object_name, "clivlc", 6 ) ) )
- {
- /* VLC in normal primary interface mode */
- RunInterface( p_intf );
- p_intf->b_die = VLC_TRUE;
- }
- else
- {
- /* Run the interface in a separate thread */
- if( vlc_thread_create( p_intf, "interface", RunInterface,
- VLC_THREAD_PRIORITY_LOW, VLC_FALSE ) )
- {
- msg_Err( p_intf, "cannot spawn interface thread" );
- return VLC_EGENERIC;
- }
- if( p_intf->b_block )
- {
- /* VLC in primary interface mode with a working macosx vout */
- [NSApp run];
- p_intf->b_die = VLC_TRUE;
- }
- }
- #else
- if( p_intf->b_block )
- {
- /* Run a manager thread, launch the interface, kill the manager */
- if( vlc_thread_create( p_intf, "manager", Manager,
- VLC_THREAD_PRIORITY_LOW, VLC_FALSE ) )
- {
- msg_Err( p_intf, "cannot spawn manager thread" );
- return VLC_EGENERIC;
- }
- RunInterface( p_intf );
- p_intf->b_die = VLC_TRUE;
- /* Do not join the thread... intf_StopThread will do it for us */
- }
- else
- {
- /* Run the interface in a separate thread */
- if( vlc_thread_create( p_intf, "interface", RunInterface,
- VLC_THREAD_PRIORITY_LOW, VLC_FALSE ) )
- {
- msg_Err( p_intf, "cannot spawn interface thread" );
- return VLC_EGENERIC;
- }
- }
- #endif
- return VLC_SUCCESS;
- }
- /**
- * Stops the interface thread
- *
- * This function asks the interface thread to stop
- * param p_intf the interface thread
- * return nothing
- */
- void intf_StopThread( intf_thread_t *p_intf )
- {
- /* Tell the interface to die */
- if( !p_intf->b_block )
- {
- p_intf->b_die = VLC_TRUE;
- }
- /* Wait for the thread to exit */
- vlc_thread_join( p_intf );
- }
- /**
- * brief Destroy the interface after the main loop endeed.
- *
- * Destroys interfaces and closes output devices
- * param p_intf the interface thread
- * return nothing
- */
- void intf_Destroy( intf_thread_t *p_intf )
- {
- /* Unlock module if present (a switch may have failed) */
- if( p_intf->p_module )
- {
- module_Unneed( p_intf, p_intf->p_module );
- }
- vlc_mutex_destroy( &p_intf->change_lock );
- /* Free structure */
- vlc_object_destroy( p_intf );
- }
- /* Following functions are local */
- /*****************************************************************************
- * Manager: helper thread for blocking interfaces
- *****************************************************************************
- * 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.
- *****************************************************************************/
- /**
- * brief Helper thread for blocking interfaces.
- * ingroup vlc_interface
- *
- * This is a local function
- * 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.
- * see intf_RunThread
- * param p_intf an interface thread
- * return nothing
- */
- static void Manager( intf_thread_t *p_intf )
- {
- while( !p_intf->b_die )
- {
- msleep( INTF_IDLE_SLEEP );
- if( p_intf->p_vlc->b_die )
- {
- p_intf->b_die = VLC_TRUE;
- #ifdef SYS_DARWIN
- if( strncmp( p_intf->p_vlc->psz_object_name, "clivlc", 6 ) )
- {
- [NSApp stop: NULL];
- }
- #endif
- return;
- }
- }
- }
- /*****************************************************************************
- * RunInterface: setups necessary data and give control to the interface
- *****************************************************************************/
- static void RunInterface( intf_thread_t *p_intf )
- {
- static char *ppsz_interfaces[] =
- {
- "skins2", "Skins 2",
- "wxwindows", "wxWindows",
- NULL, NULL
- };
- char **ppsz_parser;
- vlc_list_t *p_list;
- int i;
- vlc_value_t val, text;
- char *psz_intf;
- /* Variable used for interface switching */
- p_intf->psz_switch_intf = NULL;
- var_Create( p_intf, "intf-switch", VLC_VAR_STRING |
- VLC_VAR_HASCHOICE | VLC_VAR_ISCOMMAND );
- text.psz_string = _("Switch interface");
- var_Change( p_intf, "intf-switch", VLC_VAR_SETTEXT, &text, NULL );
- /* Only fill the list with available modules */
- p_list = vlc_list_find( p_intf, VLC_OBJECT_MODULE, FIND_ANYWHERE );
- for( ppsz_parser = ppsz_interfaces; *ppsz_parser; ppsz_parser += 2 )
- {
- for( i = 0; i < p_list->i_count; i++ )
- {
- module_t *p_module = (module_t *)p_list->p_values[i].p_object;
- if( !strcmp( p_module->psz_object_name, ppsz_parser[0] ) )
- {
- val.psz_string = ppsz_parser[0];
- text.psz_string = ppsz_parser[1];
- var_Change( p_intf, "intf-switch", VLC_VAR_ADDCHOICE,
- &val, &text );
- break;
- }
- }
- }
- vlc_list_release( p_list );
- var_AddCallback( p_intf, "intf-switch", SwitchIntfCallback, NULL );
- /* Variable used for interface spawning */
- var_Create( p_intf, "intf-add", VLC_VAR_STRING |
- VLC_VAR_HASCHOICE | VLC_VAR_ISCOMMAND );
- text.psz_string = _("Add Interface");
- var_Change( p_intf, "intf-add", VLC_VAR_SETTEXT, &text, NULL );
- val.psz_string = "rc"; text.psz_string = "Console";
- var_Change( p_intf, "intf-add", VLC_VAR_ADDCHOICE, &val, &text );
- val.psz_string = "telnet"; text.psz_string = "Telnet Interface";
- var_Change( p_intf, "intf-add", VLC_VAR_ADDCHOICE, &val, &text );
- val.psz_string = "http"; text.psz_string = "Web Interface";
- var_Change( p_intf, "intf-add", VLC_VAR_ADDCHOICE, &val, &text );
- val.psz_string = "logger"; text.psz_string = "Debug logging";
- var_Change( p_intf, "intf-add", VLC_VAR_ADDCHOICE, &val, &text );
- val.psz_string = "sap"; text.psz_string = "SAP Playlist";
- var_Change( p_intf, "intf-add", VLC_VAR_ADDCHOICE, &val, &text );
- val.psz_string = "gestures"; text.psz_string = "Mouse Gestures";
- var_Change( p_intf, "intf-add", VLC_VAR_ADDCHOICE, &val, &text );
- var_AddCallback( p_intf, "intf-add", AddIntfCallback, NULL );
- do
- {
- /* Give control to the interface */
- p_intf->pf_run( p_intf );
- /* Reset play on start status */
- p_intf->b_play = VLC_FALSE;
- if( !p_intf->psz_switch_intf )
- {
- break;
- }
- /* Make sure the old interface is completely uninitialized */
- module_Unneed( p_intf, p_intf->p_module );
- /* Provide ability to switch the main interface on the fly */
- psz_intf = p_intf->psz_switch_intf;
- p_intf->psz_switch_intf = NULL;
- vlc_mutex_lock( &p_intf->object_lock );
- p_intf->b_die = VLC_FALSE;
- p_intf->b_dead = VLC_FALSE;
- vlc_mutex_unlock( &p_intf->object_lock );
- p_intf->p_module = module_Need( p_intf, "interface", psz_intf, 0 );
- free( psz_intf );
- }
- while( p_intf->p_module );
- }
- static int SwitchIntfCallback( vlc_object_t *p_this, char const *psz_cmd,
- vlc_value_t oldval, vlc_value_t newval, void *p_data )
- {
- intf_thread_t *p_intf = (intf_thread_t *)p_this;
- p_intf->psz_switch_intf =
- malloc( strlen(newval.psz_string) + sizeof(",none") );
- sprintf( p_intf->psz_switch_intf, "%s,none", newval.psz_string );
- p_intf->b_die = VLC_TRUE;
- return VLC_SUCCESS;
- }
- static int AddIntfCallback( vlc_object_t *p_this, char const *psz_cmd,
- vlc_value_t oldval, vlc_value_t newval, void *p_data )
- {
- intf_thread_t *p_intf;
- char *psz_intf = malloc( strlen(newval.psz_string) + sizeof(",none") );
- /* Try to create the interface */
- sprintf( psz_intf, "%s,none", newval.psz_string );
- p_intf = intf_Create( p_this->p_vlc, psz_intf );
- free( psz_intf );
- if( p_intf == NULL )
- {
- msg_Err( p_this, "interface "%s" initialization failed",
- newval.psz_string );
- return VLC_EGENERIC;
- }
- /* Try to run the interface */
- p_intf->b_block = VLC_FALSE;
- if( intf_RunThread( p_intf ) != VLC_SUCCESS )
- {
- vlc_object_detach( p_intf );
- intf_Destroy( p_intf );
- return VLC_EGENERIC;
- }
- return VLC_SUCCESS;
- }
- #ifdef SYS_DARWIN
- /*****************************************************************************
- * VLCApplication implementation
- *****************************************************************************/
- @implementation VLCApplication
- - (void)stop: (id)sender
- {
- NSEvent *o_event;
- NSAutoreleasePool *o_pool;
- [super stop:sender];
- o_pool = [[NSAutoreleasePool alloc] init];
- /* send a dummy event to break out of the event loop */
- o_event = [NSEvent mouseEventWithType: NSLeftMouseDown
- location: NSMakePoint( 1, 1 ) modifierFlags: 0
- timestamp: 1 windowNumber: [[NSApp mainWindow] windowNumber]
- context: [NSGraphicsContext currentContext] eventNumber: 1
- clickCount: 1 pressure: 0.0];
- [NSApp postEvent: o_event atStart: YES];
- [o_pool release];
- }
- - (void)terminate: (id)sender
- {
- if( [NSApp isRunning] )
- [NSApp stop:sender];
- [super terminate: sender];
- }
- @end
- #endif