mirror of https://code.videolan.org/videolan/vlc
140 lines
5.5 KiB
C
140 lines
5.5 KiB
C
/*****************************************************************************
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* messages.h: messages interface
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* This library provides basic functions for threads to interact with user
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* interface, such as message output.
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*****************************************************************************
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* Copyright (C) 1999, 2000, 2001, 2002 VideoLAN
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* $Id: vlc_messages.h,v 1.6 2002/08/26 09:12:46 sam Exp $
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*
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* Authors: Vincent Seguin <seguin@via.ecp.fr>
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* Samuel Hocevar <sam@zoy.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
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*****************************************************************************/
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#include <stdarg.h>
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/*****************************************************************************
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* msg_item_t
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*****************************************************************************
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* Store a single message.
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*****************************************************************************/
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typedef struct
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{
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int i_type; /* message type, see below */
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int i_object_id;
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int i_object_type;
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char * psz_module;
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char * psz_msg; /* the message itself */
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#if 0
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mtime_t date; /* date of the message */
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char * psz_file; /* file in which the function was called */
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char * psz_function; /* function from which the function was called */
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int i_line; /* line at which the function was called */
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#endif
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} msg_item_t;
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/* Message types */
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#define VLC_MSG_INFO 0 /* standard messages */
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#define VLC_MSG_ERR 1 /* error messages */
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#define VLC_MSG_WARN 2 /* warning messages */
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#define VLC_MSG_DBG 3 /* debug messages */
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/*****************************************************************************
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* msg_bank_t
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*****************************************************************************
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* Store all data requiered by messages interfaces.
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*****************************************************************************/
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struct msg_bank_t
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{
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/* Message queue lock */
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vlc_mutex_t lock;
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vlc_bool_t b_configured;
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vlc_bool_t b_overflow;
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/* Message queue */
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msg_item_t msg[VLC_MSG_QSIZE]; /* message queue */
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int i_start;
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int i_stop;
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/* Subscribers */
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int i_sub;
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msg_subscription_t **pp_sub;
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};
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/*****************************************************************************
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* msg_subscription_t
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*****************************************************************************
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* Used by interface plugins which subscribe to the message bank.
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*****************************************************************************/
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struct msg_subscription_t
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{
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int i_start;
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int* pi_stop;
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msg_item_t* p_msg;
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vlc_mutex_t* p_lock;
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};
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/*****************************************************************************
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* Prototypes
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*****************************************************************************/
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VLC_EXPORT( void, __msg_Generic, ( vlc_object_t *, int, const char *, const char *, ... ) );
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VLC_EXPORT( void, __msg_Info, ( void *, const char *, ... ) );
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VLC_EXPORT( void, __msg_Err, ( void *, const char *, ... ) );
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VLC_EXPORT( void, __msg_Warn, ( void *, const char *, ... ) );
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VLC_EXPORT( void, __msg_Dbg, ( void *, const char *, ... ) );
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#ifdef HAVE_VARIADIC_MACROS
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# define msg_Info( p_this, psz_format, args... ) \
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__msg_Generic( VLC_OBJECT(p_this), VLC_MSG_INFO, MODULE_STRING, \
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psz_format, ## args )
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# define msg_Err( p_this, psz_format, args... ) \
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__msg_Generic( VLC_OBJECT(p_this), VLC_MSG_ERR, MODULE_STRING, \
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psz_format, ## args )
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# define msg_Warn( p_this, psz_format, args... ) \
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__msg_Generic( VLC_OBJECT(p_this), VLC_MSG_WARN, MODULE_STRING, \
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psz_format, ## args )
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# define msg_Dbg( p_this, psz_format, args... ) \
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__msg_Generic( VLC_OBJECT(p_this), VLC_MSG_DBG, MODULE_STRING, \
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psz_format, ## args )
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#else /* HAVE_VARIADIC_MACROS */
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# define msg_Info __msg_Info
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# define msg_Err __msg_Err
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# define msg_Warn __msg_Warn
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# define msg_Dbg __msg_Dbg
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#endif /* HAVE_VARIADIC_MACROS */
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#define msg_Create(a) __msg_Create(VLC_OBJECT(a))
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#define msg_Flush(a) __msg_Flush(VLC_OBJECT(a))
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#define msg_Destroy(a) __msg_Destroy(VLC_OBJECT(a))
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void __msg_Create ( vlc_object_t * );
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void __msg_Flush ( vlc_object_t * );
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void __msg_Destroy ( vlc_object_t * );
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#define msg_Subscribe(a) __msg_Subscribe(VLC_OBJECT(a))
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#define msg_Unsubscribe(a,b) __msg_Unsubscribe(VLC_OBJECT(a),b)
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VLC_EXPORT( msg_subscription_t*, __msg_Subscribe, ( vlc_object_t * ) );
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VLC_EXPORT( void, __msg_Unsubscribe, ( vlc_object_t *, msg_subscription_t * ) );
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