vlc_input.h

mips版本的VLC视频服务器

/*****************************************************************************
 * vlc_input.h: Core input structures
 *****************************************************************************
 * Copyright (C) 1999-2006 the VideoLAN team
 * $Id: 1ddf852b44f98095318447c8873725ce203ad550 $
 *
 * Authors: Christophe Massiot <[e-mail]>
 *          Laurent Aimar <[e-mail]>
 *
 * 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.
 *****************************************************************************/

/* __ is need because conflict with <vlc/input.h> */
#ifndef VLC__INPUT_H
#define VLC__INPUT_H 1

/**
 * \file
 * This file defines functions, structures and enums for input objects in vlc
 */

#include <vlc_es.h>
#include <vlc_meta.h>
#include <vlc_epg.h>
#include <vlc_events.h>

#include <string.h>                                     /* strcasestr() */

struct vlc_meta_t;

/*****************************************************************************
 * input_item_t: Describes an input and is used to spawn input_thread_t objects
 *****************************************************************************/
struct info_t
{
    char *psz_name;            /**< Name of this info */
    char *psz_value;           /**< Value of the info */
};

struct info_category_t
{
    char   *psz_name;      /**< Name of this category */
    int    i_infos;        /**< Number of infos in the category */
    struct info_t **pp_infos;     /**< Pointer to an array of infos */
};

struct input_item_t
{
    VLC_GC_MEMBERS
    int        i_id;                 /**< Identifier of the item */

    char       *psz_name;            /**< text describing this item */
    char       *psz_uri;             /**< mrl of this item */
    bool       b_fixed_name;        /**< Can the interface change the name ?*/

    int        i_options;            /**< Number of input options */
    char       **ppsz_options;       /**< Array of input options */
    uint8_t    *optflagv;            /**< Some flags of input options */
    unsigned   optflagc;

    mtime_t    i_duration;           /**< Duration in milliseconds*/

    uint8_t    i_type;               /**< Type (file, disc, ...) */
    bool b_prefers_tree;             /**< Do we prefer being displayed as tree*/

    int        i_categories;         /**< Number of info categories */
    info_category_t **pp_categories; /**< Pointer to the first info category */

    int         i_es;                /**< Number of es format descriptions */
    es_format_t **es;                /**< Es formats */

    input_stats_t *p_stats;          /**< Statistics */
    int           i_nb_played;       /**< Number of times played */

    bool          b_error_when_reading;       /**< Error When Reading */

    vlc_meta_t *p_meta;

    vlc_event_manager_t event_manager;

    vlc_mutex_t lock;                 /**< Lock for the item */
};

#define ITEM_TYPE_UNKNOWN       0
#define ITEM_TYPE_FILE          1
#define ITEM_TYPE_DIRECTORY     2
#define ITEM_TYPE_DISC          3
#define ITEM_TYPE_CDDA          4
#define ITEM_TYPE_CARD          5
#define ITEM_TYPE_NET           6
#define ITEM_TYPE_PLAYLIST      7
#define ITEM_TYPE_NODE          8
#define ITEM_TYPE_NUMBER        9

VLC_EXPORT( void, input_item_CopyOptions, ( input_item_t *p_parent, input_item_t *p_child ) );
VLC_EXPORT( void, input_item_SetName, ( input_item_t *p_item, const char *psz_name ) );

/* This won't hold the item, but can tell to interested third parties
 * Like the playlist, that there is a new sub item. With this design
 * It is not the input item's responsability to keep all the ref of
 * the input item children. */
VLC_EXPORT( void, input_item_AddSubItem, ( input_item_t *p_parent, input_item_t *p_child ) );


/* Flags handled past input_item_AddOpt() */
#define VLC_INPUT_OPTION_TRUSTED 0x2

/* Flags handled within input_item_AddOpt() */
#define VLC_INPUT_OPTION_UNIQUE  0x100

VLC_EXPORT( int,  input_item_AddOpt, ( input_item_t *, const char *str, unsigned flags ) );
VLC_EXPORT( int,  input_item_AddOption, (input_item_t *, const char * ) );
VLC_EXPORT( bool, input_item_HasErrorWhenReading, ( input_item_t * ) );
VLC_EXPORT( void, input_item_SetMeta, ( input_item_t *, vlc_meta_type_t meta_type, const char *psz_val ));
VLC_EXPORT( bool, input_item_MetaMatch, ( input_item_t *p_i, vlc_meta_type_t meta_type, const char *psz ) );
VLC_EXPORT( char *, input_item_GetMeta, ( input_item_t *p_i, vlc_meta_type_t meta_type ) );
VLC_EXPORT( char *, input_item_GetName, ( input_item_t * p_i ) );
VLC_EXPORT( char *, input_item_GetURI, ( input_item_t * p_i ) );
VLC_EXPORT( void,   input_item_SetURI, ( input_item_t * p_i, char * psz_uri ));
VLC_EXPORT(mtime_t, input_item_GetDuration, ( input_item_t * p_i ) );
VLC_EXPORT( void,   input_item_SetDuration, ( input_item_t * p_i, mtime_t i_duration ));
VLC_EXPORT( bool,   input_item_IsPreparsed, ( input_item_t *p_i ));
VLC_EXPORT( bool,   input_item_IsArtFetched, ( input_item_t *p_i ));


#define input_item_SetTitle( item, b )       input_item_SetMeta( item, vlc_meta_Title, b )
#define input_item_SetArtist( item, b )      input_item_SetMeta( item, vlc_meta_Artist, b )
#define input_item_SetGenre( item, b )       input_item_SetMeta( item, vlc_meta_Genre, b )
#define input_item_SetCopyright( item, b )   input_item_SetMeta( item, vlc_meta_Copyright, b )
#define input_item_SetAlbum( item, b )       input_item_SetMeta( item, vlc_meta_Album, b )
#define input_item_SetTrackNum( item, b )    input_item_SetMeta( item, vlc_meta_TrackNumber, b )
#define input_item_SetDescription( item, b ) input_item_SetMeta( item, vlc_meta_Description, b )
#define input_item_SetRating( item, b )      input_item_SetMeta( item, vlc_meta_Rating, b )
#define input_item_SetDate( item, b )        input_item_SetMeta( item, vlc_meta_Date, b )
#define input_item_SetSetting( item, b )     input_item_SetMeta( item, vlc_meta_Setting, b )
#define input_item_SetURL( item, b )         input_item_SetMeta( item, vlc_meta_URL, b )
#define input_item_SetLanguage( item, b )    input_item_SetMeta( item, vlc_meta_Language, b )
#define input_item_SetNowPlaying( item, b )  input_item_SetMeta( item, vlc_meta_NowPlaying, b )
#define input_item_SetPublisher( item, b )   input_item_SetMeta( item, vlc_meta_Publisher, b )
#define input_item_SetEncodedBy( item, b )   input_item_SetMeta( item, vlc_meta_EncodedBy, b )
#define input_item_SetArtURL( item, b )      input_item_SetMeta( item, vlc_meta_ArtworkURL, b )
#define input_item_SetTrackID( item, b )     input_item_SetMeta( item, vlc_meta_TrackID, b )

#define input_item_GetTitle( item )          input_item_GetMeta( item, vlc_meta_Title )
#define input_item_GetArtist( item )         input_item_GetMeta( item, vlc_meta_Artist )
#define input_item_GetGenre( item )          input_item_GetMeta( item, vlc_meta_Genre )
#define input_item_GetCopyright( item )      input_item_GetMeta( item, vlc_meta_Copyright )
#define input_item_GetAlbum( item )          input_item_GetMeta( item, vlc_meta_Album )
#define input_item_GetTrackNum( item )       input_item_GetMeta( item, vlc_meta_TrackNumber )
#define input_item_GetDescription( item )    input_item_GetMeta( item, vlc_meta_Description )
#define input_item_GetRating( item )         input_item_GetMeta( item, vlc_meta_Rating )
#define input_item_GetDate( item )           input_item_GetMeta( item, vlc_meta_Date )
#define input_item_GetGetting( item )        input_item_GetMeta( item, vlc_meta_Getting )
#define input_item_GetURL( item )            input_item_GetMeta( item, vlc_meta_URL )
#define input_item_GetLanguage( item )       input_item_GetMeta( item, vlc_meta_Language )
#define input_item_GetNowPlaying( item )     input_item_GetMeta( item, vlc_meta_NowPlaying )
#define input_item_GetPublisher( item )      input_item_GetMeta( item, vlc_meta_Publisher )
#define input_item_GetEncodedBy( item )      input_item_GetMeta( item, vlc_meta_EncodedBy )
#define input_item_GetArtURL( item )         input_item_GetMeta( item, vlc_meta_ArtworkURL )
#define input_item_GetTrackID( item )        input_item_GetMeta( item, vlc_meta_TrackID )
#define input_item_GetSetting( item )        input_item_GetMeta( item, vlc_meta_Setting )

VLC_EXPORT( char *, input_item_GetInfo, ( input_item_t *p_i, const char *psz_cat,const char *psz_name ) );
VLC_EXPORT( int, input_item_AddInfo, ( input_item_t *p_i, const char *psz_cat, const char *psz_name, const char *psz_format, ... ) LIBVLC_FORMAT( 4, 5 ) );
VLC_EXPORT( int, input_item_DelInfo, ( input_item_t *p_i, const char *psz_cat, const char *psz_name ) );

#define input_item_New( a,b,c ) input_item_NewExt( a, b, c, 0, NULL, -1 )
#define input_item_NewExt(a,b,c,d,e,f) __input_item_NewExt( VLC_OBJECT(a),b,c,d,e,f)
VLC_EXPORT( input_item_t *, __input_item_NewExt, (vlc_object_t *, const char *, const char*, int, const char *const *, mtime_t i_duration )  );
VLC_EXPORT( input_item_t *, input_item_NewWithType, ( vlc_object_t *, const char *, const char *e, int, const char *const *, mtime_t i_duration, int ) );

/*****************************************************************************
 * Meta data helpers
 *****************************************************************************/
static inline void vlc_audio_replay_gain_MergeFromMeta( audio_replay_gain_t *p_dst,
                                                        const vlc_meta_t *p_meta )
{
    char * psz_value;

    if( !p_meta )
        return;

    if( (psz_value = (char *)vlc_dictionary_value_for_key( &p_meta->extra_tags, "REPLAYGAIN_TRACK_GAIN" )) ||
        (psz_value = (char *)vlc_dictionary_value_for_key( &p_meta->extra_tags, "RG_RADIO" )) )
    {
        p_dst->pb_gain[AUDIO_REPLAY_GAIN_TRACK] = true;
        p_dst->pf_gain[AUDIO_REPLAY_GAIN_TRACK] = atof( psz_value );
    }
    else if( (psz_value = (char *)vlc_dictionary_value_for_key( &p_meta->extra_tags, "REPLAYGAIN_TRACK_PEAK" )) ||
             (psz_value = (char *)vlc_dictionary_value_for_key( &p_meta->extra_tags, "RG_PEAK" )) )
    {
        p_dst->pb_peak[AUDIO_REPLAY_GAIN_TRACK] = true;
        p_dst->pf_peak[AUDIO_REPLAY_GAIN_TRACK] = atof( psz_value );
    }
    else if( (psz_value = (char *)vlc_dictionary_value_for_key( &p_meta->extra_tags, "REPLAYGAIN_ALBUM_GAIN" )) ||
             (psz_value = (char *)vlc_dictionary_value_for_key( &p_meta->extra_tags, "RG_AUDIOPHILE" )) )
    {
        p_dst->pb_gain[AUDIO_REPLAY_GAIN_ALBUM] = true;
        p_dst->pf_gain[AUDIO_REPLAY_GAIN_ALBUM] = atof( psz_value );
    }
    else if( (psz_value = (char *)vlc_dictionary_value_for_key( &p_meta->extra_tags, "REPLAYGAIN_ALBUM_PEAK" )) )
    {
        p_dst->pb_peak[AUDIO_REPLAY_GAIN_ALBUM] = true;
        p_dst->pf_peak[AUDIO_REPLAY_GAIN_ALBUM] = atof( psz_value );
    }
}

/*****************************************************************************
 * Seek point: (generalisation of chapters)
 *****************************************************************************/
struct seekpoint_t
{
    int64_t i_byte_offset;
    int64_t i_time_offset;
    char    *psz_name;
    int     i_level;
};

static inline seekpoint_t *vlc_seekpoint_New( void )
{
    seekpoint_t *point = (seekpoint_t*)malloc( sizeof( seekpoint_t ) );
    point->i_byte_offset =
    point->i_time_offset = -1;
    point->i_level = 0;
    point->psz_name = NULL;
    return point;
}

static inline void vlc_seekpoint_Delete( seekpoint_t *point )
{
    if( !point ) return;
    free( point->psz_name );
    free( point );
}

static inline seekpoint_t *vlc_seekpoint_Duplicate( seekpoint_t *src )
{
    seekpoint_t *point = vlc_seekpoint_New();
    if( src->psz_name ) point->psz_name = strdup( src->psz_name );
    point->i_time_offset = src->i_time_offset;
    point->i_byte_offset = src->i_byte_offset;
    return point;
}

/*****************************************************************************
 * Title:
 *****************************************************************************/
typedef struct
{
    char        *psz_name;

    bool        b_menu;      /* Is it a menu or a normal entry */

    int64_t     i_length;   /* Length(microsecond) if known, else 0 */
    int64_t     i_size;     /* Size (bytes) if known, else 0 */

    /* Title seekpoint */
    int         i_seekpoint;
    seekpoint_t **seekpoint;

} input_title_t;

static inline input_title_t *vlc_input_title_New(void)
{
    input_title_t *t = (input_title_t*)malloc( sizeof( input_title_t ) );

    t->psz_name = NULL;
    t->b_menu = false;
    t->i_length = 0;
    t->i_size   = 0;
    t->i_seekpoint = 0;
    t->seekpoint = NULL;

    return t;
}

static inline void vlc_input_title_Delete( input_title_t *t )
{
    int i;
    if( t == NULL )
        return;

    free( t->psz_name );
    for( i = 0; i < t->i_seekpoint; i++ )
    {
        free( t->seekpoint[i]->psz_name );
        free( t->seekpoint[i] );
    }
    free( t->seekpoint );
    free( t );
}

static inline input_title_t *vlc_input_title_Duplicate( input_title_t *t )
{
    input_title_t *dup = vlc_input_title_New( );
    int i;

    if( t->psz_name ) dup->psz_name = strdup( t->psz_name );
    dup->b_menu      = t->b_menu;
    dup->i_length    = t->i_length;
    dup->i_size      = t->i_size;
    dup->i_seekpoint = t->i_seekpoint;
    if( t->i_seekpoint > 0 )
    {
        dup->seekpoint = (seekpoint_t**)calloc( t->i_seekpoint,
                                                sizeof(seekpoint_t*) );

        for( i = 0; i < t->i_seekpoint; i++ )
        {
            dup->seekpoint[i] = vlc_seekpoint_Duplicate( t->seekpoint[i] );
        }
    }

    return dup;
}

/*****************************************************************************
 * Attachments
 *****************************************************************************/
struct input_attachment_t
{
    char *psz_name;
    char *psz_mime;
    char *psz_description;

    int  i_data;
    void *p_data;
};

static inline input_attachment_t *vlc_input_attachment_New( const char *psz_name,
                                                            const char *psz_mime,
                                                            const char *psz_description,
                                                            const void *p_data,
                                                            int i_data )
{
    input_attachment_t *a =
        (input_attachment_t*)malloc( sizeof(input_attachment_t) );