src/misc/epg.c

   1 /*****************************************************************************
   2  * epg.c: Electronic Program Guide
   3  *****************************************************************************
   4  * Copyright (C) 2007 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27
  28 #ifdef HAVE_CONFIG_H
  29 # include "config.h"
  30 #endif
  31
  32 #include <vlc_common.h>
  33 #include <vlc_epg.h>
  34
  35 void vlc_epg_Init( vlc_epg_t *p_epg, const char *psz_name )
  36 {
  37     p_epg->psz_name = psz_name ? strdup( psz_name ) : NULL;
  38     p_epg->p_current = NULL;
  39     TAB_INIT( p_epg->i_event, p_epg->pp_event );
  40 }
  41
  42 void vlc_epg_Clean( vlc_epg_t *p_epg )
  43 {
  44     int i;
  45     for( i = 0; i < p_epg->i_event; i++ )
  46     {
  47         vlc_epg_event_t *p_evt = p_epg->pp_event[i];
  48         free( p_evt->psz_name );
  49         free( p_evt->psz_short_description );
  50         free( p_evt->psz_description );
  51         free( p_evt );
  52     }
  53     TAB_CLEAN( p_epg->i_event, p_epg->pp_event );
  54     free( p_epg->psz_name );
  55 }
  56
  57 void vlc_epg_AddEvent( vlc_epg_t *p_epg, int64_t i_start, int i_duration,
  58                        const char *psz_name, const char *psz_short_description, const char *psz_description )
  59 {
  60     vlc_epg_event_t *p_evt = (vlc_epg_event_t*)malloc( sizeof(vlc_epg_event_t) );
  61     if( !p_evt )
  62         return;
  63     p_evt->i_start = i_start;
  64     p_evt->i_duration = i_duration;
  65     p_evt->psz_name = psz_name ? strdup( psz_name ) : NULL;
  66     p_evt->psz_short_description = psz_short_description ? strdup( psz_short_description ) : NULL;
  67     p_evt->psz_description = psz_description ? strdup( psz_description ) : NULL;
  68     TAB_APPEND_CPP( vlc_epg_event_t, p_epg->i_event, p_epg->pp_event, p_evt );
  69 }
  70
  71 vlc_epg_t *vlc_epg_New( const char *psz_name )
  72 {
  73     vlc_epg_t *p_epg = (vlc_epg_t*)malloc( sizeof(vlc_epg_t) );
  74     if( p_epg )
  75         vlc_epg_Init( p_epg, psz_name );
  76     return p_epg;
  77 }
  78
  79 void vlc_epg_Delete( vlc_epg_t *p_epg )
  80 {
  81     vlc_epg_Clean( p_epg );
  82     free( p_epg );
  83 }
  84
  85 void vlc_epg_SetCurrent( vlc_epg_t *p_epg, int64_t i_start )
  86 {
  87     int i;
  88     p_epg->p_current = NULL;
  89     if( i_start < 0 )
  90         return;
  91
  92     for( i = 0; i < p_epg->i_event; i++ )
  93     {
  94         if( p_epg->pp_event[i]->i_start == i_start )
  95         {
  96             p_epg->p_current = p_epg->pp_event[i];
  97             break;
  98         }
  99     }
 100 }
 101
 102 void vlc_epg_Merge( vlc_epg_t *p_dst, const vlc_epg_t *p_src )
 103 {
 104     int i;
 105
 106     /* Add new event */
 107     for( i = 0; i < p_src->i_event; i++ )
 108     {
 109         vlc_epg_event_t *p_evt = p_src->pp_event[i];
 110         bool b_add = true;
 111         int j;
 112
 113         for( j = 0; j < p_dst->i_event; j++ )
 114         {
 115             if( p_dst->pp_event[j]->i_start == p_evt->i_start && p_dst->pp_event[j]->i_duration == p_evt->i_duration )
 116             {
 117                 b_add = false;
 118                 break;
 119             }
 120             if( p_dst->pp_event[j]->i_start > p_evt->i_start )
 121                 break;
 122         }
 123         if( b_add )
 124         {
 125             vlc_epg_event_t *p_copy = calloc( 1, sizeof(vlc_epg_event_t) );
 126             if( !p_copy )
 127                 break;
 128             p_copy->i_start = p_evt->i_start;
 129             p_copy->i_duration = p_evt->i_duration;
 130             p_copy->psz_name = p_evt->psz_name ? strdup( p_evt->psz_name ) : NULL;
 131             p_copy->psz_short_description = p_evt->psz_short_description ? strdup( p_evt->psz_short_description ) : NULL;
 132             p_copy->psz_description = p_evt->psz_description ? strdup( p_evt->psz_description ) : NULL;
 133             TAB_INSERT( p_dst->i_event, p_dst->pp_event, p_copy, j );
 134         }
 135     }
 136     /* Update current */
 137     if( p_src->p_current )
 138         vlc_epg_SetCurrent( p_dst, p_src->p_current->i_start );
 139
 140     /* Keep only 1 old event  */
 141     if( p_dst->p_current )
 142     {
 143         while( p_dst->i_event > 1 && p_dst->pp_event[0] != p_dst->p_current && p_dst->pp_event[1] != p_dst->p_current )
 144             TAB_REMOVE( p_dst->i_event, p_dst->pp_event, p_dst->pp_event[0] );
 145     }
 146 }
 147