vlc_messages.h 6.46 KB
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/*****************************************************************************
 * messages.h: messages interface
 * This library provides basic functions for threads to interact with user
 * interface, such as message output.
 *****************************************************************************
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 * Copyright (C) 1999, 2000, 2001, 2002 the VideoLAN team
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 * $Id$
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 *
 * Authors: Vincent Seguin <seguin@via.ecp.fr>
 *          Samuel Hocevar <sam@zoy.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.
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 *
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 * 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
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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 *****************************************************************************/

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#ifndef VLC_MESSAGES_H_
#define VLC_MESSAGES_H_
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/**
 * \file
 * This file defines structures and functions to handle messages and statistics gathering
 */

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#include <stdarg.h>
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/**
 * \defgroup messages Messages
 * This library provides basic functions for threads to interact with user
 * interface, such as message output.
 *
 * @{
 */
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/** Message types */
enum msg_item_type
{
    VLC_MSG_INFO=0, /**< Important information */
    VLC_MSG_ERR,    /**< Error */
    VLC_MSG_WARN,   /**< Warning */
    VLC_MSG_DBG,    /**< Debug */
};

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/**
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 * Log message
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 */
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typedef struct
{
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    unsigned    i_type;  /**< Message type, see @ref msg_item_type */
    uintptr_t   i_object_id; /**< Emitter (temporaly) unique object ID or 0 */
    const char *psz_object_type; /**< Emitter object type name */
    const char *psz_module; /**< Emitter module (source code) */
    const char *psz_header; /**< Additional header (used by VLM media) */
    char       *psz_msg; /**< Message text */
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} msg_item_t;

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VLC_MALLOC VLC_USED
static inline msg_item_t *msg_Copy (const msg_item_t *msg)
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{
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    msg_item_t *copy = (msg_item_t *)xmalloc (sizeof (*copy));
    copy->i_type = msg->i_type;
    copy->i_object_id = msg->i_object_id;
    copy->psz_object_type = msg->psz_object_type;
    copy->psz_module = strdup (msg->psz_module);
    copy->psz_msg = strdup (msg->psz_msg);
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    copy->psz_header = msg->psz_header ? strdup (msg->psz_header) : NULL;
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    return copy;
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}

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static inline void msg_Free (msg_item_t *msg)
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{
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    free ((char *)msg->psz_module);
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    free ((char *)msg->psz_header);
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    free (msg->psz_msg);
    free (msg);
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}

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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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typedef struct msg_subscription_t msg_subscription_t;
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/*****************************************************************************
 * Prototypes
 *****************************************************************************/
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VLC_API void vlc_Log(vlc_object_t *, int,
                     const char *, const char *, ...) VLC_FORMAT( 4, 5 );
VLC_API void vlc_vaLog(vlc_object_t *, int,
                       const char *, const char *, va_list);
#define msg_GenericVa(a, b, c, d, e) vlc_vaLog(VLC_OBJECT(a), b, c, d, e)
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#define msg_Info( p_this, ... ) \
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    vlc_Log( VLC_OBJECT(p_this), VLC_MSG_INFO, MODULE_STRING, __VA_ARGS__ )
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#define msg_Err( p_this, ... ) \
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    vlc_Log( VLC_OBJECT(p_this), VLC_MSG_ERR,  MODULE_STRING, __VA_ARGS__ )
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#define msg_Warn( p_this, ... ) \
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    vlc_Log( VLC_OBJECT(p_this), VLC_MSG_WARN, MODULE_STRING, __VA_ARGS__ )
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#define msg_Dbg( p_this, ... ) \
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    vlc_Log( VLC_OBJECT(p_this), VLC_MSG_DBG,  MODULE_STRING, __VA_ARGS__ )
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typedef struct msg_cb_data_t msg_cb_data_t;

/**
 * Message logging callback signature.
 * Accepts one private data pointer, the message, and an overrun counter.
 */
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typedef void (*msg_callback_t) (msg_cb_data_t *, const msg_item_t *);
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VLC_API msg_subscription_t *vlc_Subscribe(msg_callback_t, msg_cb_data_t *) VLC_USED;
VLC_API void vlc_Unsubscribe(msg_subscription_t *);
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/**
 * @}
 */
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/**
 * \defgroup statistics Statistics
 *
 * @{
 */

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/****************************
 * Generic stats stuff
 ****************************/
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enum
{
    STATS_LAST,
    STATS_COUNTER,
    STATS_MAX,
    STATS_MIN,
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    STATS_DERIVATIVE,
    STATS_TIMER
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};

struct counter_sample_t
{
    vlc_value_t value;
    mtime_t     date;
};

struct counter_t
{
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    unsigned int        i_id;
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    char              * psz_name;
    int                 i_type;
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    void              * p_obj;
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    int                 i_compute_type;
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    int                 i_samples;
    counter_sample_t ** pp_samples;
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    mtime_t             update_interval;
    mtime_t             last_update;
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};

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enum
{
    STATS_INPUT_BITRATE,
    STATS_READ_BYTES,
    STATS_READ_PACKETS,
    STATS_DEMUX_READ,
    STATS_DEMUX_BITRATE,
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    STATS_DEMUX_CORRUPTED,
    STATS_DEMUX_DISCONTINUITY,
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    STATS_PLAYED_ABUFFERS,
    STATS_LOST_ABUFFERS,
    STATS_DECODED_AUDIO,
    STATS_DECODED_VIDEO,
    STATS_DECODED_SUB,
    STATS_CLIENT_CONNECTIONS,
    STATS_ACTIVE_CONNECTIONS,
    STATS_SOUT_SENT_PACKETS,
    STATS_SOUT_SENT_BYTES,
    STATS_SOUT_SEND_BITRATE,
    STATS_DISPLAYED_PICTURES,
    STATS_LOST_PICTURES,

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    STATS_TIMER_PLAYLIST_BUILD,
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    STATS_TIMER_ML_LOAD,
    STATS_TIMER_ML_DUMP,
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    STATS_TIMER_INTERACTION,
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    STATS_TIMER_PREPARSE,
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    STATS_TIMER_INPUT_LAUNCHING,
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    STATS_TIMER_MODULE_NEED,
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    STATS_TIMER_VIDEO_FRAME_ENCODING,
    STATS_TIMER_AUDIO_FRAME_ENCODING,
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    STATS_TIMER_SKINS_PLAYTREE_IMAGE,
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};

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/*********
 * Timing
 ********/
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VLC_API void stats_TimerStart(vlc_object_t*, const char *, unsigned int );
VLC_API void stats_TimerStop(vlc_object_t*, unsigned int);
VLC_API void stats_TimerDump(vlc_object_t*, unsigned int);
VLC_API void stats_TimersDumpAll(vlc_object_t*);
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#define stats_TimerStart(a,b,c) stats_TimerStart( VLC_OBJECT(a), b,c )
#define stats_TimerStop(a,b) stats_TimerStop( VLC_OBJECT(a), b )
#define stats_TimerDump(a,b) stats_TimerDump( VLC_OBJECT(a), b )
#define stats_TimersDumpAll(a) stats_TimersDumpAll( VLC_OBJECT(a) )

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VLC_API void stats_TimersCleanAll(vlc_object_t * );
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#define stats_TimersCleanAll(a) stats_TimersCleanAll( VLC_OBJECT(a) )

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VLC_API void stats_TimerClean(vlc_object_t *, unsigned int );
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#define stats_TimerClean(a,b) stats_TimerClean( VLC_OBJECT(a), b )
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/**
 * @}
 */
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#endif