git.sesse.net Git - vlc/blob - modules/video_filter/puzzle.c

   1 /*****************************************************************************
   2  * puzzle.c : Puzzle game
   3  *****************************************************************************
   4  * Copyright (C) 2005-2006 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Antoine Cellerier <dionoea -at- videolan -dot- org>
   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 #include <stdlib.h>                                      /* malloc(), free() */
  28 #include <string.h>
  29
  30 #include <vlc/vlc.h>
  31 #include <vlc/vout.h>
  32
  33 #include <math.h>
  34
  35 #include "filter_common.h"
  36 #include "vlc_image.h"
  37 #include "vlc_input.h"
  38 #include "vlc_playlist.h"
  39
  40 /*****************************************************************************
  41  * Local prototypes
  42  *****************************************************************************/
  43 static int  Create    ( vlc_object_t * );
  44 static void Destroy   ( vlc_object_t * );
  45
  46 static int  Init      ( vout_thread_t * );
  47 static void End       ( vout_thread_t * );
  48 static void Render    ( vout_thread_t *, picture_t * );
  49
  50 static int  SendEvents   ( vlc_object_t *, char const *,
  51                            vlc_value_t, vlc_value_t, void * );
  52 static int  MouseEvent   ( vlc_object_t *, char const *,
  53                            vlc_value_t, vlc_value_t, void * );
  54
  55 /*****************************************************************************
  56  * Module descriptor
  57  *****************************************************************************/
  58
  59 #define ROWS_TEXT N_("Number of puzzle rows")
  60 #define ROWS_LONGTEXT N_("Number of puzzle rows")
  61 #define COLS_TEXT N_("Number of puzzle columns")
  62 #define COLS_LONGTEXT N_("Number of puzzle columns")
  63 #define BLACKSLOT_TEXT N_("Make one tile a black slot")
  64 #define BLACKSLOT_LONGTEXT N_("Make one slot black. Other tiles can only be swapped with the black slot.")
  65
  66 vlc_module_begin();
  67     set_description( _("Puzzle interactive game video filter") );
  68     set_shortname( _( "Puzzle" ));
  69     set_capability( "video filter", 0 );
  70     set_category( CAT_VIDEO );
  71     set_subcategory( SUBCAT_VIDEO_VFILTER );
  72
  73     add_integer_with_range( "puzzle-rows", 4, 1, 128, NULL,
  74                             ROWS_TEXT, ROWS_LONGTEXT, VLC_FALSE );
  75     add_integer_with_range( "puzzle-cols", 4, 1, 128, NULL,
  76                             COLS_TEXT, COLS_LONGTEXT, VLC_FALSE );
  77     add_bool( "puzzle-black-slot", 0, NULL,
  78               BLACKSLOT_TEXT, BLACKSLOT_LONGTEXT, VLC_FALSE );
  79
  80     set_callbacks( Create, Destroy );
  81 vlc_module_end();
  82
  83 /*****************************************************************************
  84  * vout_sys_t: Magnify video output method descriptor
  85  *****************************************************************************/
  86 struct vout_sys_t
  87 {
  88     vout_thread_t *p_vout;
  89
  90     image_handler_t *p_image;
  91
  92     int i_cols;
  93     int i_rows;
  94     int *pi_order;
  95     int i_selected;
  96     vlc_bool_t b_finished;
  97
  98     vlc_bool_t b_blackslot;
  99 };
 100
 101 /*****************************************************************************
 102  * Control: control facility for the vout (forwards to child vout)
 103  *****************************************************************************/
 104 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
 105 {
 106     return vout_vaControl( p_vout->p_sys->p_vout, i_query, args );
 107 }
 108
 109 /*****************************************************************************
 110  * Misc stuff...
 111  *****************************************************************************/
 112 static vlc_bool_t finished( vout_sys_t *p_sys )
 113 {
 114     int i;
 115     for( i = 0; i < p_sys->i_cols * p_sys->i_rows; i++ )
 116     {
 117         if( i != p_sys->pi_order[i] ) return VLC_FALSE;
 118     }
 119     return VLC_TRUE;
 120 }
 121 static vlc_bool_t is_valid( vout_sys_t *p_sys )
 122 {
 123     int i, s=0;
 124     if( p_sys->b_blackslot == VLC_FALSE ) return VLC_TRUE;
 125     for( i = 0; i < p_sys->i_cols * p_sys->i_rows; i++ )
 126     {
 127         if( (p_sys->i_cols*p_sys->i_rows+i-p_sys->pi_order[i])%2 ) s++;
 128         else s--;
 129     }
 130     if( s!=0 ) return VLC_FALSE;
 131     else return VLC_TRUE;
 132 }
 133 static void shuffle( vout_sys_t *p_sys )
 134 {
 135     int i, c;
 136     free( p_sys->pi_order );
 137     p_sys->pi_order = malloc( p_sys->i_cols * p_sys->i_rows * sizeof( int ) );
 138     do
 139     {
 140         for( i = 0; i < p_sys->i_cols * p_sys->i_rows; i++ )
 141         {
 142             p_sys->pi_order[i] = -1;
 143         }
 144         i = 0;
 145         for( c = 0; c < p_sys->i_cols * p_sys->i_rows; )
 146         {
 147             i = rand()%( p_sys->i_cols * p_sys->i_rows );
 148             if( p_sys->pi_order[i] == -1 )
 149             {
 150                 p_sys->pi_order[i] = c;
 151                 c++;
 152             }
 153         }
 154         p_sys->b_finished = finished( p_sys );
 155     } while(    p_sys->b_finished == VLC_TRUE
 156              && is_valid( p_sys ) == VLC_FALSE );
 157
 158     if( p_sys->b_blackslot == VLC_TRUE )
 159     {
 160         for( i = 0; i < p_sys->i_cols * p_sys->i_rows; i++ )
 161         {
 162             if( p_sys->pi_order[i] ==
 163                 ( p_sys->i_cols - 1 ) * p_sys->i_rows )
 164             {
 165                 p_sys->i_selected = i;
 166                 break;
 167             }
 168         }
 169     }
 170     else
 171     {
 172         p_sys->i_selected = -1;
 173     }
 174     printf( "selected: %d\n", p_sys->i_selected );
 175 }
 176
 177 /*****************************************************************************
 178  * Create: allocates Magnify video thread output method
 179  *****************************************************************************/
 180 static int Create( vlc_object_t *p_this )
 181 {
 182     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 183
 184     /* Allocate structure */
 185     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 186     if( p_vout->p_sys == NULL )
 187     {
 188         msg_Err( p_vout, "out of memory" );
 189         return VLC_ENOMEM;
 190     }
 191
 192     p_vout->p_sys->p_image = image_HandlerCreate( p_vout );
 193
 194     p_vout->p_sys->i_rows = config_GetInt( p_vout, "puzzle-rows" );
 195     p_vout->p_sys->i_cols = config_GetInt( p_vout, "puzzle-cols" );
 196     p_vout->p_sys->b_blackslot = config_GetInt( p_vout, "puzzle-black-slot" );
 197
 198     p_vout->p_sys->pi_order = NULL;
 199     shuffle( p_vout->p_sys );
 200
 201     p_vout->pf_init = Init;
 202     p_vout->pf_end = End;
 203     p_vout->pf_manage = NULL;
 204     p_vout->pf_render = Render;
 205     p_vout->pf_display = NULL;
 206     p_vout->pf_control = Control;
 207
 208     return VLC_SUCCESS;
 209 }
 210
 211 /*****************************************************************************
 212  * Init: initialize Magnify video thread output method
 213  *****************************************************************************/
 214 static int Init( vout_thread_t *p_vout )
 215 {
 216     int i_index;
 217     picture_t *p_pic;
 218     video_format_t fmt = {0};
 219
 220     I_OUTPUTPICTURES = 0;
 221
 222     /* Initialize the output structure */
 223     p_vout->output.i_chroma = p_vout->render.i_chroma;
 224     p_vout->output.i_width  = p_vout->render.i_width;
 225     p_vout->output.i_height = p_vout->render.i_height;
 226     p_vout->output.i_aspect = p_vout->render.i_aspect;
 227
 228     p_vout->fmt_out = p_vout->fmt_in;
 229     fmt = p_vout->fmt_out;
 230
 231     /* Try to open the real video output */
 232     msg_Dbg( p_vout, "spawning the real video output" );
 233
 234     p_vout->p_sys->p_vout = vout_Create( p_vout, &fmt );
 235
 236     /* Everything failed */
 237     if( p_vout->p_sys->p_vout == NULL )
 238     {
 239         msg_Err( p_vout, "cannot open vout, aborting" );
 240         return VLC_EGENERIC;
 241     }
 242
 243     var_AddCallback( p_vout->p_sys->p_vout, "mouse-x", MouseEvent, p_vout );
 244     var_AddCallback( p_vout->p_sys->p_vout, "mouse-y", MouseEvent, p_vout );
 245     var_AddCallback( p_vout->p_sys->p_vout, "mouse-clicked",
 246                      MouseEvent, p_vout);
 247
 248     ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
 249     ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
 250     ADD_PARENT_CALLBACKS( SendEventsToChild );
 251
 252     return VLC_SUCCESS;
 253 }
 254
 255 /*****************************************************************************
 256  * End: terminate Magnify video thread output method
 257  *****************************************************************************/
 258 static void End( vout_thread_t *p_vout )
 259 {
 260     int i_index;
 261
 262     /* Free the fake output buffers we allocated */
 263     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 264     {
 265         i_index--;
 266         free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
 267     }
 268
 269     var_DelCallback( p_vout->p_sys->p_vout, "mouse-x", MouseEvent, p_vout);
 270     var_DelCallback( p_vout->p_sys->p_vout, "mouse-y", MouseEvent, p_vout);
 271     var_DelCallback( p_vout->p_sys->p_vout, "mouse-clicked", MouseEvent, p_vout);
 272 }
 273
 274 /*****************************************************************************
 275  * Destroy: destroy Magnify video thread output method
 276  *****************************************************************************/
 277 static void Destroy( vlc_object_t *p_this )
 278 {
 279     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 280
 281     if( p_vout->p_sys->p_vout )
 282     {
 283         DEL_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
 284         vlc_object_detach( p_vout->p_sys->p_vout );
 285         vout_Destroy( p_vout->p_sys->p_vout );
 286     }
 287
 288     image_HandlerDelete( p_vout->p_sys->p_image );
 289     free( p_vout->p_sys->pi_order );
 290
 291     DEL_PARENT_CALLBACKS( SendEventsToChild );
 292
 293     free( p_vout->p_sys );
 294 }
 295
 296 /*****************************************************************************
 297  * Render: displays previously rendered output
 298  *****************************************************************************/
 299 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
 300 {
 301     picture_t *p_outpic;
 302
 303     //video_format_t fmt_out = {0};
 304     //picture_t *p_converted;
 305
 306     int i_plane;
 307
 308     int i_rows = p_vout->p_sys->i_rows;
 309     int i_cols = p_vout->p_sys->i_cols;
 310
 311     /* This is a new frame. Get a structure from the video_output. */
 312     while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
 313               == NULL )
 314     {
 315         if( p_vout->b_die || p_vout->b_error )
 316         {
 317             return;
 318         }
 319         msleep( VOUT_OUTMEM_SLEEP );
 320     }
 321
 322     vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
 323
 324     for( i_plane = 0; i_plane < p_outpic->i_planes; i_plane++ )
 325     {
 326         plane_t *p_in = p_pic->p+i_plane;
 327         plane_t *p_out = p_outpic->p+i_plane;
 328         int i_pitch = p_in->i_pitch;
 329         int i;
 330
 331         for( i = 0; i < i_cols * i_rows; i++ )
 332         {
 333             int i_col = i % i_cols;
 334             int i_row = i / i_cols;
 335             int i_ocol = p_vout->p_sys->pi_order[i] % i_cols;
 336             int i_orow = p_vout->p_sys->pi_order[i] / i_cols;
 337             int i_last_row = i_row + 1;
 338             i_orow *= p_in->i_lines / i_rows;
 339             i_row *= p_in->i_lines / i_rows;
 340             i_last_row *= p_in->i_lines / i_rows;
 341
 342             if( p_vout->p_sys->b_blackslot == VLC_TRUE
 343                 && p_vout->p_sys->b_finished == VLC_FALSE
 344                 && i == p_vout->p_sys->i_selected )
 345             {
 346                 uint8_t color = ( i_plane == Y_PLANE ? 0x0 : 0x80 );
 347                 for( ; i_row < i_last_row; i_row++, i_orow++ )
 348                 {
 349                     memset( p_out->p_pixels + i_row * i_pitch
 350                                             + i_col * i_pitch / i_cols,
 351                             color, i_pitch / i_cols );
 352                 }
 353             }
 354             else
 355             {
 356                 for( ; i_row < i_last_row; i_row++, i_orow++ )
 357                 {
 358                     memcpy( p_out->p_pixels + i_row * i_pitch
 359                                             + i_col * i_pitch / i_cols,
 360                             p_in->p_pixels + i_orow * i_pitch
 361                                            + i_ocol * i_pitch / i_cols,
 362                             i_pitch / i_cols );
 363                 }
 364             }
 365         }
 366     }
 367
 368     if(    p_vout->p_sys->i_selected != -1
 369         && p_vout->p_sys->b_blackslot == VLC_FALSE )
 370     {
 371         plane_t *p_in = p_pic->p+Y_PLANE;
 372         plane_t *p_out = p_outpic->p+Y_PLANE;
 373         int i_pitch = p_in->i_pitch;
 374         int i_col = p_vout->p_sys->i_selected % i_cols;
 375         int i_row = p_vout->p_sys->i_selected / i_cols;
 376         int i_last_row = i_row + 1;
 377         i_row *= p_in->i_lines / i_rows;
 378         i_last_row *= p_in->i_lines / i_rows;
 379         memset( p_out->p_pixels + i_row * i_pitch
 380                                 + i_col * i_pitch / i_cols,
 381                 0xff, i_pitch / i_cols );
 382         for( ; i_row < i_last_row; i_row++ )
 383         {
 384             p_out->p_pixels[   i_row * i_pitch
 385                              + i_col * i_pitch / i_cols ] = 0xff;
 386             p_out->p_pixels[ i_row * i_pitch
 387                              + (i_col+1) * i_pitch / i_cols - 1 ] = 0xff;
 388         }
 389         i_row--;
 390         memset( p_out->p_pixels + i_row * i_pitch
 391                                 + i_col * i_pitch / i_cols,
 392                 0xff, i_pitch / i_cols );
 393     }
 394
 395     vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
 396 }
 397
 398 /*****************************************************************************
 399  * SendEvents: forward mouse and keyboard events to the parent p_vout
 400  *****************************************************************************/
 401 static int SendEvents( vlc_object_t *p_this, char const *psz_var,
 402                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 403 {
 404     var_Set( (vlc_object_t *)p_data, psz_var, newval );
 405
 406     return VLC_SUCCESS;
 407 }
 408
 409 /*****************************************************************************
 410  * SendEventsToChild: forward events to the child/children vout
 411  *****************************************************************************/
 412 static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
 413                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 414 {
 415     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 416     var_Set( p_vout->p_sys->p_vout, psz_var, newval );
 417     return VLC_SUCCESS;
 418 }
 419
 420 /*****************************************************************************
 421  * MouseEvent: callback for mouse events
 422  *****************************************************************************/
 423 static int MouseEvent( vlc_object_t *p_this, char const *psz_var,
 424                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 425 {
 426     vout_thread_t *p_vout = (vout_thread_t*)p_data;
 427     int i_x, i_y;
 428     int i_v;
 429
 430 #define MOUSE_DOWN    1
 431 #define MOUSE_CLICKED 2
 432 #define MOUSE_MOVE_X  4
 433 #define MOUSE_MOVE_Y  8
 434 #define MOUSE_MOVE    12
 435     uint8_t mouse= 0;
 436
 437     int v_h = p_vout->output.i_height;
 438     int v_w = p_vout->output.i_width;
 439     int i_pos;
 440
 441     if( psz_var[6] == 'x' ) mouse |= MOUSE_MOVE_X;
 442     if( psz_var[6] == 'y' ) mouse |= MOUSE_MOVE_Y;
 443     if( psz_var[6] == 'c' ) mouse |= MOUSE_CLICKED;
 444
 445     i_v = var_GetInteger( p_vout->p_sys->p_vout, "mouse-button-down" );
 446     if( i_v & 0x1 ) mouse |= MOUSE_DOWN;
 447     i_y = var_GetInteger( p_vout->p_sys->p_vout, "mouse-y" );
 448     i_x = var_GetInteger( p_vout->p_sys->p_vout, "mouse-x" );
 449
 450     if( mouse & MOUSE_CLICKED )
 451     {
 452         i_pos = p_vout->p_sys->i_cols * ( ( p_vout->p_sys->i_rows * i_y ) / v_h ) + (p_vout->p_sys->i_cols * i_x ) / v_w;
 453         if( p_vout->p_sys->b_finished == VLC_TRUE )
 454         {
 455             shuffle( p_vout->p_sys );
 456         }
 457         else if( p_vout->p_sys->i_selected == -1 )
 458         {
 459             p_vout->p_sys->i_selected = i_pos;
 460         }
 461         else if( p_vout->p_sys->i_selected == i_pos
 462                  && p_vout->p_sys->b_blackslot == VLC_FALSE )
 463         {
 464             p_vout->p_sys->i_selected = -1;
 465         }
 466         else if(    p_vout->p_sys->i_selected == i_pos + 1
 467                  || p_vout->p_sys->i_selected == i_pos - 1
 468                  || p_vout->p_sys->i_selected == i_pos + p_vout->p_sys->i_cols
 469                  || p_vout->p_sys->i_selected == i_pos - p_vout->p_sys->i_cols )
 470         {
 471             int a = p_vout->p_sys->pi_order[ p_vout->p_sys->i_selected ];
 472             p_vout->p_sys->pi_order[ p_vout->p_sys->i_selected ] =
 473                 p_vout->p_sys->pi_order[ i_pos ];
 474             p_vout->p_sys->pi_order[ i_pos ] = a;
 475             if( p_vout->p_sys->b_blackslot == VLC_TRUE )
 476                 p_vout->p_sys->i_selected = i_pos;
 477             else
 478                 p_vout->p_sys->i_selected = -1;
 479
 480             p_vout->p_sys->b_finished = finished( p_vout->p_sys );
 481         }
 482     }
 483     return VLC_SUCCESS;
 484 }