git.sesse.net Git - vlc/blob - plugins/filter/wall.c

   1 /*****************************************************************************
   2  * wall.c : Wall video plugin for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2000, 2001 VideoLAN
   5  * $Id: wall.c,v 1.22 2002/06/01 18:04:48 sam Exp $
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <errno.h>
  28 #include <stdlib.h>                                      /* malloc(), free() */
  29 #include <string.h>
  30
  31 #include <vlc/vlc.h>
  32 #include <vlc/vout.h>
  33
  34 #include "filter_common.h"
  35
  36 /*****************************************************************************
  37  * Capabilities defined in the other files.
  38  *****************************************************************************/
  39 static void vout_getfunctions( function_list_t * p_function_list );
  40
  41 /*****************************************************************************
  42  * Build configuration tree.
  43  *****************************************************************************/
  44 MODULE_CONFIG_START
  45 ADD_CATEGORY_HINT( N_("Miscellaneous"), NULL )
  46 ADD_INTEGER ( "wall-cols", 3, NULL, N_("Number of columns"),
  47               N_("Select the number of horizontal videowindows in which "
  48                  "to split the video") )
  49 ADD_INTEGER ( "wall-rows", 3, NULL, N_("Number of rows"),
  50               N_("Select the number of vertical videowindows in which "
  51                  "to split the video") )
  52 ADD_STRING ( "wall-active", NULL, NULL, N_("Active windows"),
  53              N_("comma separated list of active windows, defaults to all") )
  54 MODULE_CONFIG_STOP
  55
  56 MODULE_INIT_START
  57     SET_DESCRIPTION( _("image wall video module") )
  58     /* Capability score set to 0 because we don't want to be spawned
  59      * as a video output unless explicitly requested to */
  60     ADD_CAPABILITY( VOUT, 0 )
  61     ADD_SHORTCUT( "wall" )
  62 MODULE_INIT_STOP
  63
  64 MODULE_ACTIVATE_START
  65     vout_getfunctions( &p_module->p_functions->vout );
  66 MODULE_ACTIVATE_STOP
  67
  68 MODULE_DEACTIVATE_START
  69 MODULE_DEACTIVATE_STOP
  70
  71 /*****************************************************************************
  72  * vout_sys_t: Wall video output method descriptor
  73  *****************************************************************************
  74  * This structure is part of the video output thread descriptor.
  75  * It describes the Wall specific properties of an output thread.
  76  *****************************************************************************/
  77 struct vout_sys_s
  78 {
  79     int    i_col;
  80     int    i_row;
  81     int    i_vout;
  82     struct vout_list_s
  83     {
  84         vlc_bool_t b_active;
  85         int i_width;
  86         int i_height;
  87         vout_thread_t *p_vout;
  88     } *pp_vout;
  89 };
  90
  91 /*****************************************************************************
  92  * Local prototypes
  93  *****************************************************************************/
  94 static int  vout_Create    ( vout_thread_t * );
  95 static int  vout_Init      ( vout_thread_t * );
  96 static void vout_End       ( vout_thread_t * );
  97 static void vout_Destroy   ( vout_thread_t * );
  98 static int  vout_Manage    ( vout_thread_t * );
  99 static void vout_Render    ( vout_thread_t *, picture_t * );
 100 static void vout_Display   ( vout_thread_t *, picture_t * );
 101
 102 static void RemoveAllVout  ( vout_thread_t *p_vout );
 103
 104 /*****************************************************************************
 105  * Functions exported as capabilities. They are declared as static so that
 106  * we don't pollute the namespace too much.
 107  *****************************************************************************/
 108 static void vout_getfunctions( function_list_t * p_function_list )
 109 {
 110     p_function_list->functions.vout.pf_create     = vout_Create;
 111     p_function_list->functions.vout.pf_init       = vout_Init;
 112     p_function_list->functions.vout.pf_end        = vout_End;
 113     p_function_list->functions.vout.pf_destroy    = vout_Destroy;
 114     p_function_list->functions.vout.pf_manage     = vout_Manage;
 115     p_function_list->functions.vout.pf_render     = vout_Render;
 116     p_function_list->functions.vout.pf_display    = vout_Display;
 117 }
 118
 119 /*****************************************************************************
 120  * vout_Create: allocates Wall video thread output method
 121  *****************************************************************************
 122  * This function allocates and initializes a Wall vout method.
 123  *****************************************************************************/
 124 static int vout_Create( vout_thread_t *p_vout )
 125 {
 126     char *psz_method, *psz_tmp, *psz_method_tmp;
 127     int i_vout;
 128
 129     /* Allocate structure */
 130     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 131     if( p_vout->p_sys == NULL )
 132     {
 133         msg_Err( p_vout, "out of memory" );
 134         return( 1 );
 135     }
 136
 137     /* Look what method was requested */
 138     p_vout->p_sys->i_col = config_GetInt( p_vout, "wall-cols" );
 139     p_vout->p_sys->i_row = config_GetInt( p_vout, "wall-rows" );
 140
 141     p_vout->p_sys->i_col = __MAX( 1, __MIN( 15, p_vout->p_sys->i_col ) );
 142     p_vout->p_sys->i_row = __MAX( 1, __MIN( 15, p_vout->p_sys->i_row ) );
 143
 144     msg_Dbg( p_vout, "opening a %i x %i wall",
 145              p_vout->p_sys->i_col, p_vout->p_sys->i_row );
 146
 147     p_vout->p_sys->pp_vout = malloc( p_vout->p_sys->i_row *
 148                                      p_vout->p_sys->i_col *
 149                                      sizeof(struct vout_list_s) );
 150     if( p_vout->p_sys->pp_vout == NULL )
 151     {
 152         msg_Err( p_vout, "out of memory" );
 153         free( p_vout->p_sys );
 154         return( 1 );
 155     }
 156
 157     psz_method_tmp = psz_method = config_GetPsz( p_vout, "wall-active" );
 158
 159     /* If no trailing vout are specified, take them all */
 160     if( psz_method == NULL )
 161     {
 162         for( i_vout = p_vout->p_sys->i_row * p_vout->p_sys->i_col;
 163              i_vout--; )
 164         {
 165             p_vout->p_sys->pp_vout[i_vout].b_active = 1;
 166         }
 167     }
 168     /* If trailing vout are specified, activate only the requested ones */
 169     else
 170     {
 171         for( i_vout = p_vout->p_sys->i_row * p_vout->p_sys->i_col;
 172              i_vout--; )
 173         {
 174             p_vout->p_sys->pp_vout[i_vout].b_active = 0;
 175         }
 176
 177         while( *psz_method )
 178         {
 179             psz_tmp = psz_method;
 180             while( *psz_tmp && *psz_tmp != ',' )
 181             {
 182                 psz_tmp++;
 183             }
 184
 185             if( *psz_tmp )
 186             {
 187                 *psz_tmp = '\0';
 188                 i_vout = atoi( psz_method );
 189                 psz_method = psz_tmp + 1;
 190             }
 191             else
 192             {
 193                 i_vout = atoi( psz_method );
 194                 psz_method = psz_tmp;
 195             }
 196
 197             if( i_vout >= 0 &&
 198                 i_vout < p_vout->p_sys->i_row * p_vout->p_sys->i_col )
 199             {
 200                 p_vout->p_sys->pp_vout[i_vout].b_active = 1;
 201             }
 202         }
 203     }
 204
 205     free( psz_method_tmp );
 206
 207     return( 0 );
 208 }
 209
 210 /*****************************************************************************
 211  * vout_Init: initialize Wall video thread output method
 212  *****************************************************************************/
 213 static int vout_Init( vout_thread_t *p_vout )
 214 {
 215     int i_index, i_row, i_col, i_width, i_height;
 216     char *psz_filter;
 217     picture_t *p_pic;
 218
 219     I_OUTPUTPICTURES = 0;
 220
 221     /* Initialize the output structure */
 222     p_vout->output.i_chroma = p_vout->render.i_chroma;
 223     p_vout->output.i_width  = p_vout->render.i_width;
 224     p_vout->output.i_height = p_vout->render.i_height;
 225     p_vout->output.i_aspect = p_vout->render.i_aspect;
 226
 227     /* Try to open the real video output */
 228     psz_filter = config_GetPsz( p_vout, "filter" );
 229     config_PutPsz( p_vout, "filter", NULL );
 230
 231     msg_Dbg( p_vout, "spawning the real video outputs" );
 232
 233     p_vout->p_sys->i_vout = 0;
 234
 235     /* FIXME: use bresenham instead of those ugly divisions */
 236     for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
 237     {
 238         for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
 239         {
 240             if( i_col + 1 < p_vout->p_sys->i_col )
 241             {
 242                 i_width = ( p_vout->render.i_width
 243                              / p_vout->p_sys->i_col ) & ~0x1;
 244             }
 245             else
 246             {
 247                 i_width = p_vout->render.i_width
 248                            - ( ( p_vout->render.i_width
 249                                   / p_vout->p_sys->i_col ) & ~0x1 ) * i_col;
 250             }
 251
 252             if( i_row + 1 < p_vout->p_sys->i_row )
 253             {
 254                 i_height = ( p_vout->render.i_height
 255                               / p_vout->p_sys->i_row ) & ~0x3;
 256             }
 257             else
 258             {
 259                 i_height = p_vout->render.i_height
 260                             - ( ( p_vout->render.i_height
 261                                    / p_vout->p_sys->i_row ) & ~0x3 ) * i_row;
 262             }
 263
 264             p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_width = i_width;
 265             p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_height = i_height;
 266
 267             if( !p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active )
 268             {
 269                 p_vout->p_sys->i_vout++;
 270                 continue;
 271             }
 272
 273             p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout =
 274                 vout_CreateThread( p_vout, i_width, i_height,
 275                                    p_vout->render.i_chroma,
 276                                    p_vout->render.i_aspect
 277                                     * p_vout->render.i_height / i_height
 278                                     * i_width / p_vout->render.i_width );
 279             if( p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout == NULL )
 280             {
 281                 msg_Err( p_vout, "failed to get %ix%i vout threads",
 282                                  p_vout->p_sys->i_col, p_vout->p_sys->i_row );
 283                 RemoveAllVout( p_vout );
 284                 config_PutPsz( p_vout, "filter", psz_filter );
 285                 if( psz_filter ) free( psz_filter );
 286                 return 0;
 287             }
 288
 289             p_vout->p_sys->i_vout++;
 290         }
 291     }
 292
 293     config_PutPsz( p_vout, "filter", psz_filter );
 294     if( psz_filter ) free( psz_filter );
 295
 296     ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
 297
 298     return( 0 );
 299 }
 300
 301 /*****************************************************************************
 302  * vout_End: terminate Wall video thread output method
 303  *****************************************************************************/
 304 static void vout_End( vout_thread_t *p_vout )
 305 {
 306     int i_index;
 307
 308     /* Free the fake output buffers we allocated */
 309     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 310     {
 311         i_index--;
 312         free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
 313     }
 314 }
 315
 316 /*****************************************************************************
 317  * vout_Destroy: destroy Wall video thread output method
 318  *****************************************************************************
 319  * Terminate an output method created by WallCreateOutputMethod
 320  *****************************************************************************/
 321 static void vout_Destroy( vout_thread_t *p_vout )
 322 {
 323     RemoveAllVout( p_vout );
 324
 325     free( p_vout->p_sys->pp_vout );
 326     free( p_vout->p_sys );
 327 }
 328
 329 /*****************************************************************************
 330  * vout_Manage: handle Wall events
 331  *****************************************************************************
 332  * This function should be called regularly by video output thread. It manages
 333  * console events. It returns a non null value on error.
 334  *****************************************************************************/
 335 static int vout_Manage( vout_thread_t *p_vout )
 336 {
 337     return( 0 );
 338 }
 339
 340 /*****************************************************************************
 341  * vout_Render: displays previously rendered output
 342  *****************************************************************************
 343  * This function send the currently rendered image to Wall image, waits
 344  * until it is displayed and switch the two rendering buffers, preparing next
 345  * frame.
 346  *****************************************************************************/
 347 static void vout_Render( vout_thread_t *p_vout, picture_t *p_pic )
 348 {
 349     picture_t *p_outpic = NULL;
 350     int i_col, i_row, i_vout, i_plane;
 351     int pi_left_skip[VOUT_MAX_PLANES], pi_top_skip[VOUT_MAX_PLANES];
 352
 353     i_vout = 0;
 354
 355     for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
 356     {
 357         pi_top_skip[i_plane] = 0;
 358     }
 359
 360     for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
 361     {
 362         for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
 363         {
 364             pi_left_skip[i_plane] = 0;
 365         }
 366
 367         for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
 368         {
 369             if( !p_vout->p_sys->pp_vout[ i_vout ].b_active )
 370             {
 371                 for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
 372                 {
 373                     pi_left_skip[i_plane] +=
 374                         p_vout->p_sys->pp_vout[ i_vout ].i_width
 375                          * p_pic->p[i_plane].i_pitch / p_vout->output.i_width;
 376                 }
 377                 i_vout++;
 378                 continue;
 379             }
 380
 381             while( ( p_outpic =
 382                 vout_CreatePicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 383                                     0, 0, 0 )
 384                    ) == NULL )
 385             {
 386                 if( p_vout->b_die || p_vout->b_error )
 387                 {
 388                     vout_DestroyPicture(
 389                         p_vout->p_sys->pp_vout[ i_vout ].p_vout, p_outpic );
 390                     return;
 391                 }
 392
 393                 msleep( VOUT_OUTMEM_SLEEP );
 394             }
 395
 396             vout_DatePicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 397                               p_outpic, p_pic->date );
 398             vout_LinkPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 399                               p_outpic );
 400
 401             for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
 402             {
 403                 u8 *p_in, *p_in_end, *p_out;
 404                 int i_in_pitch = p_pic->p[i_plane].i_pitch;
 405                 int i_out_pitch = p_outpic->p[i_plane].i_pitch;
 406
 407                 p_in = p_pic->p[i_plane].p_pixels
 408                         + pi_top_skip[i_plane] + pi_left_skip[i_plane];
 409
 410                 p_in_end = p_in + p_outpic->p[i_plane].i_lines
 411                                    * p_pic->p[i_plane].i_pitch;
 412
 413                 p_out = p_outpic->p[i_plane].p_pixels;
 414
 415                 while( p_in < p_in_end )
 416                 {
 417                     p_vout->p_vlc->pf_memcpy( p_out, p_in, i_out_pitch );
 418                     p_in += i_in_pitch;
 419                     p_out += i_out_pitch;
 420                 }
 421
 422                 pi_left_skip[i_plane] += i_out_pitch;
 423             }
 424
 425             vout_UnlinkPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 426                                 p_outpic );
 427             vout_DisplayPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 428                                  p_outpic );
 429
 430             i_vout++;
 431         }
 432
 433         for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
 434         {
 435             pi_top_skip[i_plane] += p_vout->p_sys->pp_vout[ i_vout ].i_height
 436                                      * p_pic->p[i_plane].i_lines
 437                                      / p_vout->output.i_height
 438                                      * p_pic->p[i_plane].i_pitch;
 439         }
 440     }
 441 }
 442
 443 /*****************************************************************************
 444  * vout_Display: displays previously rendered output
 445  *****************************************************************************
 446  * This function send the currently rendered image to Invert image, waits
 447  * until it is displayed and switch the two rendering buffers, preparing next
 448  * frame.
 449  *****************************************************************************/
 450 static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )
 451 {
 452     ;
 453 }
 454
 455 /*****************************************************************************
 456  * RemoveAllVout: destroy all the child video output threads
 457  *****************************************************************************/
 458 static void RemoveAllVout( vout_thread_t *p_vout )
 459 {
 460     while( p_vout->p_sys->i_vout )
 461     {
 462          --p_vout->p_sys->i_vout;
 463          if( p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active )
 464          {
 465              vout_DestroyThread(
 466                p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout );
 467          }
 468     }
 469 }
 470