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/*****************************************************************************
* extension.h: Lua Extensions (meta data, web information, ...)
*****************************************************************************
* Copyright (C) 2009-2010 VideoLAN and authors
* $Id$
*
* Authors: Jean-Philippe André < jpeg # videolan.org >
*
* 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.
*****************************************************************************/
#ifndef LUA_EXTENSION_H
#define LUA_EXTENSION_H
#include <vlc_extensions.h>
#include <vlc_arrays.h>
#include <vlc_dialog.h>
#define WATCH_TIMER_PERIOD (10 * CLOCK_FREQ) ///< 10s period for the timer
/* List of available commands */
typedef enum
{
CMD_ACTIVATE = 1,
CMD_DEACTIVATE,
CMD_TRIGGERMENU, /* Arg1 = int*, pointing to id to trigger. free */
CMD_CLICK, /* Arg1 = extension_widget_t* */
CMD_CLOSE,
CMD_SET_INPUT, /* No arg. Just signal current input changed */
CMD_UPDATE_META, /* No arg. Just signal current input item meta changed */
CMD_PLAYING_CHANGED /* Arg1 = int*, New playing status */
} command_type_e;
//Data types
typedef enum
{
LUA_END = 0,
LUA_NUM,
LUA_TEXT
} lua_datatype_e;
struct extension_sys_t
{
/* Extension general */
int i_capabilities;
/* Lua specific */
lua_State *L;
vlclua_dtable_t dtable;
/* Thread data */
vlc_thread_t thread;
vlc_mutex_t command_lock;
vlc_mutex_t running_lock;
vlc_cond_t wait;
/* The input this extension should use for vlc.input
* or NULL if it should use playlist's current input */
struct input_thread_t *p_input;
extensions_manager_t *p_mgr; ///< Parent
/* Queue of commands to execute */
struct command_t
{
command_type_e i_command;
void *data[10]; ///< Optional void* arguments
struct command_t *next; ///< Next command
} *command;
// The two following booleans are protected by command_lock
vlc_dialog_id *p_progress_id;
vlc_timer_t timer; ///< This timer makes sure Lua never gets stuck >5s
bool b_exiting;
bool b_thread_running; //< Only accessed out of the extension thread.
bool b_activated; ///< Protected by the command lock
};
/* Extensions: manager functions */
int Activate( extensions_manager_t *p_mgr, extension_t * );
int Deactivate( extensions_manager_t *p_mgr, extension_t * );
bool QueueDeactivateCommand( extension_t *p_ext );
void KillExtension( extensions_manager_t *p_mgr, extension_t *p_ext );
int PushCommand__( extension_t *ext, bool unique, command_type_e cmd, va_list options );
static inline int PushCommand( extension_t *ext, int cmd, ... )
{
va_list args;
va_start( args, cmd );
int i_ret = PushCommand__( ext, false, cmd, args );
va_end( args );
return i_ret;
}
static inline int PushCommandUnique( extension_t *ext, int cmd, ... )
{
va_list args;
va_start( args, cmd );
int i_ret = PushCommand__( ext, true, cmd, args );
va_end( args );
return i_ret;
}
/* Lua specific functions */
void vlclua_extension_set( lua_State *L, extension_t * );
extension_t *vlclua_extension_get( lua_State *L );
int lua_ExtensionActivate( extensions_manager_t *, extension_t * );
int lua_ExtensionDeactivate( extensions_manager_t *, extension_t * );
int lua_ExecuteFunctionVa( extensions_manager_t *p_mgr, extension_t *p_ext,
const char *psz_function, va_list args );
int lua_ExecuteFunction( extensions_manager_t *p_mgr, extension_t *p_ext,
const char *psz_function, ... );
int lua_ExtensionWidgetClick( extensions_manager_t *p_mgr,
extension_t *p_ext,
extension_widget_t *p_widget );
int lua_ExtensionTriggerMenu( extensions_manager_t *p_mgr,
extension_t *p_ext, int id );
/* Dialog specific */
int lua_DialogFlush( lua_State *L );
#endif // LUA_EXTENSION_H
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