git.sesse.net Git - vlc/blob - src/video_output/video_epg.c

   1 /*****************************************************************************
   2  * video_epg.c : EPG manipulation functions
   3  *****************************************************************************
   4  * Copyright (C) 2010 Adrien Maglo
   5  *
   6  * Author: Adrien Maglo <magsoft@videolan.org>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  21  *****************************************************************************/
  22
  23 #ifdef HAVE_CONFIG_H
  24 # include "config.h"
  25 #endif
  26
  27 #include <vlc_common.h>
  28 #include <vlc_vout.h>
  29 #include <vlc_block.h>
  30 #include <vlc_filter.h>
  31 #include <vlc_osd.h>
  32 #include <vlc_events.h>
  33 #include <vlc_input_item.h>
  34 #include <vlc_epg.h>
  35
  36
  37 /* Layout percentage defines */
  38 #define EPG_TOP 0.7
  39 #define EPG_LEFT 0.1
  40 #define EPG_NAME_SIZE 0.05
  41 #define EPG_PROGRAM_SIZE 0.03
  42
  43 #define NO_EPG N_( "No EPG found for this program." )
  44
  45
  46 static subpicture_region_t * vout_OSDEpgSlider( vout_thread_t *p_vout,
  47                                                 int i_x, int i_y,
  48                                                 int i_width, int i_height,
  49                                                 float f_ratio )
  50 {
  51     video_format_t fmt;
  52     subpicture_region_t *p_region;
  53
  54     /* Create a new subpicture region */
  55     video_format_Init( &fmt, VLC_CODEC_YUVA );
  56     fmt.i_width = fmt.i_visible_width = i_width;
  57     fmt.i_height = fmt.i_visible_height = i_height;
  58
  59     p_region = subpicture_region_New( &fmt );
  60     if( !p_region )
  61     {
  62         msg_Err( p_vout, "Cannot allocate SPU region." );
  63         return NULL;
  64     }
  65
  66     p_region->i_x = i_x;
  67     p_region->i_y = i_y;
  68
  69     picture_t *p_picture = p_region->p_picture;
  70
  71     f_ratio = __MIN( __MAX( f_ratio, 0 ), 1 );
  72     int i_filled_part_width = f_ratio * i_width;
  73
  74     for( int j = 0; j < i_height; j++ )
  75     {
  76         for( int i = 0; i < i_width; i++ )
  77         {
  78             #define WRITE_COMP( plane, value ) \
  79                 p_picture->p[plane].p_pixels[p_picture->p[plane].i_pitch * j + i] = value
  80
  81             /* Draw the slider. */
  82             bool is_outline = j == 0 || j == i_height - 1
  83                               || i == 0 || i == i_width - 1;
  84             WRITE_COMP( 0, is_outline ? 0x00 : 0xff );
  85             WRITE_COMP( 1, 0x80 );
  86             WRITE_COMP( 2, 0x80 );
  87
  88             /* We can see the video through the part of the slider
  89                which corresponds to the leaving time. */
  90             bool is_border = j < 3 || j > i_height - 4
  91                              || i < 3 || i > i_width - 4
  92                              || i < i_filled_part_width;
  93             WRITE_COMP( 3, is_border ? 0xff : 0x00 );
  94
  95             #undef WRITE_COMP
  96         }
  97     }
  98
  99     return p_region;
 100 }
 101
 102
 103 static subpicture_region_t * vout_OSDEpgText( vout_thread_t *p_vout,
 104                                               const char *psz_string,
 105                                               int i_x, int i_y,
 106                                               int i_size, uint32_t i_color )
 107 {
 108     video_format_t fmt;
 109     subpicture_region_t *p_region;
 110
 111     if( !psz_string )
 112         return NULL;
 113
 114     /* Create a new subpicture region */
 115     video_format_Init( &fmt, VLC_CODEC_TEXT );
 116
 117     p_region = subpicture_region_New( &fmt );
 118     if( !p_region )
 119     {
 120         msg_Err( p_vout, "Cannot allocate SPU region." );
 121         return NULL;
 122     }
 123
 124     /* Set subpicture parameters */
 125     p_region->psz_text = strdup( psz_string );
 126     p_region->i_align = 0;
 127     p_region->i_x = i_x;
 128     p_region->i_y = i_y;
 129
 130     /* Set text style */
 131     p_region->p_style = text_style_New();
 132     if( p_region->p_style )
 133     {
 134         p_region->p_style->i_font_size = i_size;
 135         p_region->p_style->i_font_color = i_color;
 136         p_region->p_style->i_font_alpha = 0;
 137     }
 138
 139     return p_region;
 140 }
 141
 142
 143 static subpicture_region_t * vout_BuildOSDEpg( vout_thread_t *p_vout,
 144                                                vlc_epg_t *p_epg,
 145                                                int i_visible_width,
 146                                                int i_visible_height )
 147 {
 148     subpicture_region_t *p_region_ret;
 149     subpicture_region_t **pp_region = &p_region_ret;
 150
 151     time_t i_test = time( NULL );
 152
 153     /* Display the name of the channel. */
 154     *pp_region = vout_OSDEpgText( p_vout,
 155                                   p_epg->psz_name,
 156                                   i_visible_width * EPG_LEFT,
 157                                   i_visible_height * EPG_TOP,
 158                                   i_visible_height * EPG_NAME_SIZE,
 159                                   0x00ffffff );
 160
 161     if( !*pp_region )
 162         return p_region_ret;
 163
 164     /* Display the name of the current program. */
 165     pp_region = &(* pp_region)->p_next;
 166     *pp_region = vout_OSDEpgText( p_vout, p_epg->p_current->psz_name,
 167                                   i_visible_width * ( EPG_LEFT + 0.025 ),
 168                                   i_visible_height * ( EPG_TOP + 0.05 ),
 169                                   i_visible_height * EPG_PROGRAM_SIZE,
 170                                   0x00ffffff );
 171
 172     if( !*pp_region )
 173         return p_region_ret;
 174
 175     /* Display the current program time slider. */
 176     pp_region = &(* pp_region)->p_next;
 177     *pp_region = vout_OSDEpgSlider( p_vout,
 178                                     i_visible_width * EPG_LEFT,
 179                                     i_visible_height * ( EPG_TOP + 0.1 ),
 180                                     i_visible_width * ( 1 - 2 * EPG_LEFT ),
 181                                     i_visible_height * 0.05,
 182                                     ( i_test - p_epg->p_current->i_start )
 183                                     / (float)p_epg->p_current->i_duration );
 184
 185     if( !*pp_region )
 186         return p_region_ret;
 187
 188     /* Format the hours of the beginning and the end of the current program. */
 189     struct tm tm_start, tm_end;
 190     time_t t_start = p_epg->p_current->i_start;
 191     time_t t_end = p_epg->p_current->i_start + p_epg->p_current->i_duration;
 192     localtime_r( &t_start, &tm_start );
 193     localtime_r( &t_end, &tm_end );
 194     char psz_start[128];
 195     char psz_end[128];
 196     snprintf( psz_start, sizeof(psz_start), "%2.2d:%2.2d",
 197               tm_start.tm_hour, tm_start.tm_min );
 198     snprintf( psz_end, sizeof(psz_end), "%2.2d:%2.2d",
 199               tm_end.tm_hour, tm_end.tm_min );
 200
 201     /* Display those hours. */
 202     pp_region = &(* pp_region)->p_next;
 203     *pp_region = vout_OSDEpgText( p_vout, psz_start,
 204                                   i_visible_width * ( EPG_LEFT + 0.02 ),
 205                                   i_visible_height * ( EPG_TOP + 0.15 ),
 206                                   i_visible_height * EPG_PROGRAM_SIZE,
 207                                   0x00ffffff );
 208
 209     if( !*pp_region )
 210         return p_region_ret;
 211
 212     pp_region = &(* pp_region)->p_next;
 213     *pp_region = vout_OSDEpgText( p_vout, psz_end,
 214                                   i_visible_width * ( 1 - EPG_LEFT - 0.085 ),
 215                                   i_visible_height * ( EPG_TOP + 0.15 ),
 216                                   i_visible_height * EPG_PROGRAM_SIZE,
 217                                   0x00ffffff );
 218
 219     return p_region_ret;
 220 }
 221
 222
 223 /**
 224  * \brief Show EPG information about the current program of an input item
 225  * \param p_vout pointer to the vout the information is to be showed on
 226  * \param p_input pointer to the input item the information is to be showed
 227  */
 228 int vout_OSDEpg( vout_thread_t *p_vout, input_item_t *p_input )
 229 {
 230     subpicture_t *p_spu;
 231     mtime_t i_now = mdate();
 232
 233     int i_visible_width = p_vout->fmt_in.i_width;
 234     int i_visible_height = p_vout->fmt_in.i_height;
 235
 236     if( !p_input )
 237         return VLC_EGENERIC;
 238
 239     p_spu = subpicture_New();
 240     if( !p_spu )
 241         return VLC_EGENERIC;
 242
 243     p_spu->i_channel = DEFAULT_CHAN;
 244     p_spu->i_start = i_now;
 245     p_spu->i_stop = i_now + 3000 * INT64_C(1000);
 246     p_spu->b_ephemer = true;
 247     p_spu->b_absolute = true;
 248     p_spu->b_fade = true;
 249
 250     char *psz_now_playing = input_item_GetNowPlaying( p_input );
 251     vlc_epg_t *p_epg = NULL;
 252
 253     vlc_mutex_lock( &p_input->lock );
 254
 255     /* Look for the current program EPG event */
 256     for( int i = 0; i < p_input->i_epg; i++ )
 257     {
 258         vlc_epg_t *p_tmp = p_input->pp_epg[i];
 259
 260         if( p_tmp->p_current && p_tmp->p_current->psz_name
 261             && psz_now_playing != NULL
 262             && !strcmp( p_tmp->p_current->psz_name, psz_now_playing ) )
 263         {
 264             p_epg = vlc_epg_New( p_tmp->psz_name );
 265             vlc_epg_Merge( p_epg, p_tmp );
 266             break;
 267         }
 268     }
 269
 270     vlc_mutex_unlock( &p_input->lock );
 271
 272     if( p_epg != NULL )
 273     {
 274         /* Build the EPG event subpictures. */
 275         p_spu->p_region = vout_BuildOSDEpg( p_vout, p_epg,
 276                                             i_visible_width,
 277                                             i_visible_height );
 278         vlc_epg_Delete( p_epg );
 279     }
 280     else
 281     {
 282         /* If no EPG event has been found, then display a warning message. */
 283         p_spu->p_region = vout_OSDEpgText( p_vout, NO_EPG,
 284                                            i_visible_width * EPG_LEFT,
 285                                            i_visible_height * EPG_TOP,
 286                                            i_visible_height * EPG_NAME_SIZE,
 287                                            0x00ffffff );
 288     }
 289
 290     spu_DisplaySubpicture( p_vout->p_spu, p_spu );
 291
 292     return VLC_SUCCESS;
 293 }