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
  44
  45 static subpicture_region_t * vout_OSDEpgSlider( vout_thread_t *p_vout,
  46                                                 int i_x, int i_y,
  47                                                 int i_width, int i_height,
  48                                                 float f_ratio )
  49 {
  50     video_format_t fmt;
  51     subpicture_region_t *p_region;
  52
  53     /* Create a new subpicture region */
  54     video_format_Init( &fmt, VLC_CODEC_YUVA );
  55     fmt.i_width = fmt.i_visible_width = i_width;
  56     fmt.i_height = fmt.i_visible_height = i_height;
  57     fmt.i_sar_num = 0;
  58     fmt.i_sar_den = 1;
  59
  60     p_region = subpicture_region_New( &fmt );
  61     if( !p_region )
  62     {
  63         msg_Err( p_vout, "Cannot allocate SPU region." );
  64         return NULL;
  65     }
  66
  67     p_region->i_x = i_x;
  68     p_region->i_y = i_y;
  69
  70     picture_t *p_picture = p_region->p_picture;
  71
  72     f_ratio = __MIN( __MAX( f_ratio, 0 ), 1 );
  73     int i_filled_part_width = f_ratio * i_width;
  74
  75     for( int j = 0; j < i_height; j++ )
  76     {
  77         for( int i = 0; i < i_width; i++ )
  78         {
  79             #define WRITE_COMP( plane, value ) \
  80                 p_picture->p[plane].p_pixels[p_picture->p[plane].i_pitch * j + i] = value
  81
  82             /* Draw the slider. */
  83             bool is_outline = j == 0 || j == i_height - 1
  84                               || i == 0 || i == i_width - 1;
  85             WRITE_COMP( 0, is_outline ? 0x00 : 0xff );
  86             WRITE_COMP( 1, 0x80 );
  87             WRITE_COMP( 2, 0x80 );
  88
  89             /* We can see the video through the part of the slider
  90                which corresponds to the leaving time. */
  91             bool is_border = j < 3 || j > i_height - 4
  92                              || i < 3 || i > i_width - 4
  93                              || i < i_filled_part_width;
  94             WRITE_COMP( 3, is_border ? 0xff : 0x00 );
  95
  96             #undef WRITE_COMP
  97         }
  98     }
  99
 100     return p_region;
 101 }
 102
 103
 104 static subpicture_region_t * vout_OSDEpgText( vout_thread_t *p_vout,
 105                                               const char *psz_string,
 106                                               int i_x, int i_y,
 107                                               int i_size, uint32_t i_color )
 108 {
 109     video_format_t fmt;
 110     subpicture_region_t *p_region;
 111
 112     if( !psz_string )
 113         return NULL;
 114
 115     /* Create a new subpicture region */
 116     video_format_Init( &fmt, VLC_CODEC_TEXT );
 117     fmt.i_sar_num = 0;
 118     fmt.i_sar_den = 1;
 119
 120     p_region = subpicture_region_New( &fmt );
 121     if( !p_region )
 122     {
 123         msg_Err( p_vout, "Cannot allocate SPU region." );
 124         return NULL;
 125     }
 126
 127     /* Set subpicture parameters */
 128     p_region->psz_text = strdup( psz_string );
 129     p_region->i_align = 0;
 130     p_region->i_x = i_x;
 131     p_region->i_y = i_y;
 132
 133     /* Set text style */
 134     p_region->p_style = text_style_New();
 135     if( p_region->p_style )
 136     {
 137         p_region->p_style->i_font_size = i_size;
 138         p_region->p_style->i_font_color = i_color;
 139         p_region->p_style->i_font_alpha = 0;
 140     }
 141
 142     return p_region;
 143 }
 144
 145
 146 static subpicture_region_t * vout_BuildOSDEpg( vout_thread_t *p_vout,
 147                                                vlc_epg_t *p_epg,
 148                                                int i_visible_width,
 149                                                int i_visible_height )
 150 {
 151     subpicture_region_t *p_region_ret;
 152     subpicture_region_t **pp_region = &p_region_ret;
 153
 154     time_t i_test = time( NULL );
 155
 156     /* Display the name of the channel. */
 157     *pp_region = vout_OSDEpgText( p_vout,
 158                                   p_epg->psz_name,
 159                                   i_visible_width * EPG_LEFT,
 160                                   i_visible_height * EPG_TOP,
 161                                   i_visible_height * EPG_NAME_SIZE,
 162                                   0x00ffffff );
 163
 164     if( !*pp_region )
 165         return p_region_ret;
 166
 167     /* Display the name of the current program. */
 168     pp_region = &(* pp_region)->p_next;
 169     *pp_region = vout_OSDEpgText( p_vout, p_epg->p_current->psz_name,
 170                                   i_visible_width * ( EPG_LEFT + 0.025 ),
 171                                   i_visible_height * ( EPG_TOP + 0.05 ),
 172                                   i_visible_height * EPG_PROGRAM_SIZE,
 173                                   0x00ffffff );
 174
 175     if( !*pp_region )
 176         return p_region_ret;
 177
 178     /* Display the current program time slider. */
 179     pp_region = &(* pp_region)->p_next;
 180     *pp_region = vout_OSDEpgSlider( p_vout,
 181                                     i_visible_width * EPG_LEFT,
 182                                     i_visible_height * ( EPG_TOP + 0.1 ),
 183                                     i_visible_width * ( 1 - 2 * EPG_LEFT ),
 184                                     i_visible_height * 0.05,
 185                                     ( i_test - p_epg->p_current->i_start )
 186                                     / (float)p_epg->p_current->i_duration );
 187
 188     if( !*pp_region )
 189         return p_region_ret;
 190
 191     /* Format the hours of the beginning and the end of the current program. */
 192     struct tm tm_start, tm_end;
 193     time_t t_start = p_epg->p_current->i_start;
 194     time_t t_end = p_epg->p_current->i_start + p_epg->p_current->i_duration;
 195     localtime_r( &t_start, &tm_start );
 196     localtime_r( &t_end, &tm_end );
 197     char psz_start[128];
 198     char psz_end[128];
 199     snprintf( psz_start, sizeof(psz_start), "%2.2d:%2.2d",
 200               tm_start.tm_hour, tm_start.tm_min );
 201     snprintf( psz_end, sizeof(psz_end), "%2.2d:%2.2d",
 202               tm_end.tm_hour, tm_end.tm_min );
 203
 204     /* Display those hours. */
 205     pp_region = &(* pp_region)->p_next;
 206     *pp_region = vout_OSDEpgText( p_vout, psz_start,
 207                                   i_visible_width * ( EPG_LEFT + 0.02 ),
 208                                   i_visible_height * ( EPG_TOP + 0.15 ),
 209                                   i_visible_height * EPG_PROGRAM_SIZE,
 210                                   0x00ffffff );
 211
 212     if( !*pp_region )
 213         return p_region_ret;
 214
 215     pp_region = &(* pp_region)->p_next;
 216     *pp_region = vout_OSDEpgText( p_vout, psz_end,
 217                                   i_visible_width * ( 1 - EPG_LEFT - 0.085 ),
 218                                   i_visible_height * ( EPG_TOP + 0.15 ),
 219                                   i_visible_height * EPG_PROGRAM_SIZE,
 220                                   0x00ffffff );
 221
 222     return p_region_ret;
 223 }
 224
 225
 226 /**
 227  * \brief Show EPG information about the current program of an input item
 228  * \param p_vout pointer to the vout the information is to be showed on
 229  * \param p_input pointer to the input item the information is to be showed
 230  */
 231 int vout_OSDEpg( vout_thread_t *p_vout, input_item_t *p_input )
 232 {
 233     subpicture_t *p_spu;
 234     mtime_t i_now = mdate();
 235
 236     char *psz_now_playing = input_item_GetNowPlaying( p_input );
 237     vlc_epg_t *p_epg = NULL;
 238
 239     vlc_mutex_lock( &p_input->lock );
 240
 241     /* Look for the current program EPG event */
 242     for( int i = 0; i < p_input->i_epg; i++ )
 243     {
 244         vlc_epg_t *p_tmp = p_input->pp_epg[i];
 245
 246         if( p_tmp->p_current && p_tmp->p_current->psz_name
 247             && psz_now_playing != NULL
 248             && !strcmp( p_tmp->p_current->psz_name, psz_now_playing ) )
 249         {
 250             p_epg = vlc_epg_New( p_tmp->psz_name );
 251             vlc_epg_Merge( p_epg, p_tmp );
 252             break;
 253         }
 254     }
 255
 256     vlc_mutex_unlock( &p_input->lock );
 257
 258     /* If no EPG event has been found. */
 259     if( p_epg == NULL )
 260         return VLC_EGENERIC;
 261
 262     p_spu = subpicture_New();
 263     if( !p_spu )
 264     {
 265         vlc_epg_Delete( p_epg );
 266         return VLC_EGENERIC;
 267     }
 268
 269     p_spu->i_channel = DEFAULT_CHAN;
 270     p_spu->i_start = i_now;
 271     p_spu->i_stop = i_now + 3000 * INT64_C(1000);
 272     p_spu->b_ephemer = true;
 273     p_spu->b_absolute = true;
 274     p_spu->b_fade = true;
 275
 276     /* Build the EPG event subpictures. */
 277     p_spu->p_region = vout_BuildOSDEpg( p_vout, p_epg,
 278                                         p_vout->fmt_in.i_width,
 279                                         p_vout->fmt_in.i_height );
 280
 281     vlc_epg_Delete( p_epg );
 282     spu_DisplaySubpicture( vout_GetSpu( p_vout ), p_spu );
 283
 284     return VLC_SUCCESS;
 285 }