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 1.24 2002/07/20 18:01:42 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 #define COLS_TEXT N_("Number of columns")
  45 #define COLS_LONGTEXT N_("Select the number of horizontal videowindows in " \
  46     "which to split the video")
  47
  48 #define ROWS_TEXT N_("Number of rows")
  49 #define ROWS_LONGTEXT N_("Select the number of vertical videowindows in " \
  50     "which to split the video")
  51
  52 #define ACTIVE_TEXT N_("Active windows")
  53 #define ACTIVE_LONGTEXT N_("comma separated list of active windows, " \
  54     "defaults to all")
  55
  56 MODULE_CONFIG_START
  57 ADD_CATEGORY_HINT( N_("Miscellaneous"), NULL )
  58 ADD_INTEGER ( "wall-cols", 3, NULL, COLS_TEXT, COLS_LONGTEXT )
  59 ADD_INTEGER ( "wall-rows", 3, NULL, ROWS_TEXT, ROWS_LONGTEXT )
  60 ADD_STRING ( "wall-active", NULL, NULL, ACTIVE_TEXT, ACTIVE_LONGTEXT )
  61 MODULE_CONFIG_STOP
  62
  63 MODULE_INIT_START
  64     SET_DESCRIPTION( _("image wall video module") )
  65     /* Capability score set to 0 because we don't want to be spawned
  66      * as a video output unless explicitly requested to */
  67     ADD_CAPABILITY( VOUT_FILTER, 0 )
  68     ADD_SHORTCUT( "wall" )
  69 MODULE_INIT_STOP
  70
  71 MODULE_ACTIVATE_START
  72     vout_getfunctions( &p_module->p_functions->vout );
  73 MODULE_ACTIVATE_STOP
  74
  75 MODULE_DEACTIVATE_START
  76 MODULE_DEACTIVATE_STOP
  77
  78 /*****************************************************************************
  79  * vout_sys_t: Wall video output method descriptor
  80  *****************************************************************************
  81  * This structure is part of the video output thread descriptor.
  82  * It describes the Wall specific properties of an output thread.
  83  *****************************************************************************/
  84 struct vout_sys_t
  85 {
  86     int    i_col;
  87     int    i_row;
  88     int    i_vout;
  89     struct vout_list_t
  90     {
  91         vlc_bool_t b_active;
  92         int i_width;
  93         int i_height;
  94         vout_thread_t *p_vout;
  95     } *pp_vout;
  96 };
  97
  98 /*****************************************************************************
  99  * Local prototypes
 100  *****************************************************************************/
 101 static int  vout_Create    ( vout_thread_t * );
 102 static int  vout_Init      ( vout_thread_t * );
 103 static void vout_End       ( vout_thread_t * );
 104 static void vout_Destroy   ( vout_thread_t * );
 105 static int  vout_Manage    ( vout_thread_t * );
 106 static void vout_Render    ( vout_thread_t *, picture_t * );
 107 static void vout_Display   ( vout_thread_t *, picture_t * );
 108
 109 static void RemoveAllVout  ( vout_thread_t *p_vout );
 110
 111 /*****************************************************************************
 112  * Functions exported as capabilities. They are declared as static so that
 113  * we don't pollute the namespace too much.
 114  *****************************************************************************/
 115 static void vout_getfunctions( function_list_t * p_function_list )
 116 {
 117     p_function_list->functions.vout.pf_create     = vout_Create;
 118     p_function_list->functions.vout.pf_init       = vout_Init;
 119     p_function_list->functions.vout.pf_end        = vout_End;
 120     p_function_list->functions.vout.pf_destroy    = vout_Destroy;
 121     p_function_list->functions.vout.pf_manage     = vout_Manage;
 122     p_function_list->functions.vout.pf_render     = vout_Render;
 123     p_function_list->functions.vout.pf_display    = vout_Display;
 124 }
 125
 126 /*****************************************************************************
 127  * vout_Create: allocates Wall video thread output method
 128  *****************************************************************************
 129  * This function allocates and initializes a Wall vout method.
 130  *****************************************************************************/
 131 static int vout_Create( vout_thread_t *p_vout )
 132 {
 133     char *psz_method, *psz_tmp, *psz_method_tmp;
 134     int i_vout;
 135
 136     /* Allocate structure */
 137     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
 138     if( p_vout->p_sys == NULL )
 139     {
 140         msg_Err( p_vout, "out of memory" );
 141         return( 1 );
 142     }
 143
 144     /* Look what method was requested */
 145     p_vout->p_sys->i_col = config_GetInt( p_vout, "wall-cols" );
 146     p_vout->p_sys->i_row = config_GetInt( p_vout, "wall-rows" );
 147
 148     p_vout->p_sys->i_col = __MAX( 1, __MIN( 15, p_vout->p_sys->i_col ) );
 149     p_vout->p_sys->i_row = __MAX( 1, __MIN( 15, p_vout->p_sys->i_row ) );
 150
 151     msg_Dbg( p_vout, "opening a %i x %i wall",
 152              p_vout->p_sys->i_col, p_vout->p_sys->i_row );
 153
 154     p_vout->p_sys->pp_vout = malloc( p_vout->p_sys->i_row *
 155                                      p_vout->p_sys->i_col *
 156                                      sizeof(struct vout_list_t) );
 157     if( p_vout->p_sys->pp_vout == NULL )
 158     {
 159         msg_Err( p_vout, "out of memory" );
 160         free( p_vout->p_sys );
 161         return( 1 );
 162     }
 163
 164     psz_method_tmp = psz_method = config_GetPsz( p_vout, "wall-active" );
 165
 166     /* If no trailing vout are specified, take them all */
 167     if( psz_method == NULL )
 168     {
 169         for( i_vout = p_vout->p_sys->i_row * p_vout->p_sys->i_col;
 170              i_vout--; )
 171         {
 172             p_vout->p_sys->pp_vout[i_vout].b_active = 1;
 173         }
 174     }
 175     /* If trailing vout are specified, activate only the requested ones */
 176     else
 177     {
 178         for( i_vout = p_vout->p_sys->i_row * p_vout->p_sys->i_col;
 179              i_vout--; )
 180         {
 181             p_vout->p_sys->pp_vout[i_vout].b_active = 0;
 182         }
 183
 184         while( *psz_method )
 185         {
 186             psz_tmp = psz_method;
 187             while( *psz_tmp && *psz_tmp != ',' )
 188             {
 189                 psz_tmp++;
 190             }
 191
 192             if( *psz_tmp )
 193             {
 194                 *psz_tmp = '\0';
 195                 i_vout = atoi( psz_method );
 196                 psz_method = psz_tmp + 1;
 197             }
 198             else
 199             {
 200                 i_vout = atoi( psz_method );
 201                 psz_method = psz_tmp;
 202             }
 203
 204             if( i_vout >= 0 &&
 205                 i_vout < p_vout->p_sys->i_row * p_vout->p_sys->i_col )
 206             {
 207                 p_vout->p_sys->pp_vout[i_vout].b_active = 1;
 208             }
 209         }
 210     }
 211
 212     free( psz_method_tmp );
 213
 214     return( 0 );
 215 }
 216
 217 /*****************************************************************************
 218  * vout_Init: initialize Wall video thread output method
 219  *****************************************************************************/
 220 static int vout_Init( vout_thread_t *p_vout )
 221 {
 222     int i_index, i_row, i_col, i_width, i_height;
 223     picture_t *p_pic;
 224
 225     I_OUTPUTPICTURES = 0;
 226
 227     /* Initialize the output structure */
 228     p_vout->output.i_chroma = p_vout->render.i_chroma;
 229     p_vout->output.i_width  = p_vout->render.i_width;
 230     p_vout->output.i_height = p_vout->render.i_height;
 231     p_vout->output.i_aspect = p_vout->render.i_aspect;
 232
 233     /* Try to open the real video output */
 234     msg_Dbg( p_vout, "spawning the real video outputs" );
 235
 236     p_vout->p_sys->i_vout = 0;
 237
 238     /* FIXME: use bresenham instead of those ugly divisions */
 239     for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
 240     {
 241         for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
 242         {
 243             if( i_col + 1 < p_vout->p_sys->i_col )
 244             {
 245                 i_width = ( p_vout->render.i_width
 246                              / p_vout->p_sys->i_col ) & ~0x1;
 247             }
 248             else
 249             {
 250                 i_width = p_vout->render.i_width
 251                            - ( ( p_vout->render.i_width
 252                                   / p_vout->p_sys->i_col ) & ~0x1 ) * i_col;
 253             }
 254
 255             if( i_row + 1 < p_vout->p_sys->i_row )
 256             {
 257                 i_height = ( p_vout->render.i_height
 258                               / p_vout->p_sys->i_row ) & ~0x3;
 259             }
 260             else
 261             {
 262                 i_height = p_vout->render.i_height
 263                             - ( ( p_vout->render.i_height
 264                                    / p_vout->p_sys->i_row ) & ~0x3 ) * i_row;
 265             }
 266
 267             p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_width = i_width;
 268             p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_height = i_height;
 269
 270             if( !p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active )
 271             {
 272                 p_vout->p_sys->i_vout++;
 273                 continue;
 274             }
 275
 276             p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout =
 277                 vout_CreateThread( p_vout, i_width, i_height,
 278                                    p_vout->render.i_chroma,
 279                                    p_vout->render.i_aspect
 280                                     * p_vout->render.i_height / i_height
 281                                     * i_width / p_vout->render.i_width );
 282             if( p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout == NULL )
 283             {
 284                 msg_Err( p_vout, "failed to get %ix%i vout threads",
 285                                  p_vout->p_sys->i_col, p_vout->p_sys->i_row );
 286                 RemoveAllVout( p_vout );
 287                 return 0;
 288             }
 289
 290             p_vout->p_sys->i_vout++;
 291         }
 292     }
 293
 294     ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
 295
 296     return( 0 );
 297 }
 298
 299 /*****************************************************************************
 300  * vout_End: terminate Wall video thread output method
 301  *****************************************************************************/
 302 static void vout_End( vout_thread_t *p_vout )
 303 {
 304     int i_index;
 305
 306     /* Free the fake output buffers we allocated */
 307     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 308     {
 309         i_index--;
 310         free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
 311     }
 312 }
 313
 314 /*****************************************************************************
 315  * vout_Destroy: destroy Wall video thread output method
 316  *****************************************************************************
 317  * Terminate an output method created by WallCreateOutputMethod
 318  *****************************************************************************/
 319 static void vout_Destroy( vout_thread_t *p_vout )
 320 {
 321     RemoveAllVout( p_vout );
 322
 323     free( p_vout->p_sys->pp_vout );
 324     free( p_vout->p_sys );
 325 }
 326
 327 /*****************************************************************************
 328  * vout_Manage: handle Wall events
 329  *****************************************************************************
 330  * This function should be called regularly by video output thread. It manages
 331  * console events. It returns a non null value on error.
 332  *****************************************************************************/
 333 static int vout_Manage( vout_thread_t *p_vout )
 334 {
 335     return( 0 );
 336 }
 337
 338 /*****************************************************************************
 339  * vout_Render: displays previously rendered output
 340  *****************************************************************************
 341  * This function send the currently rendered image to Wall image, waits
 342  * until it is displayed and switch the two rendering buffers, preparing next
 343  * frame.
 344  *****************************************************************************/
 345 static void vout_Render( vout_thread_t *p_vout, picture_t *p_pic )
 346 {
 347     picture_t *p_outpic = NULL;
 348     int i_col, i_row, i_vout, i_plane;
 349     int pi_left_skip[VOUT_MAX_PLANES], pi_top_skip[VOUT_MAX_PLANES];
 350
 351     i_vout = 0;
 352
 353     for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
 354     {
 355         pi_top_skip[i_plane] = 0;
 356     }
 357
 358     for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
 359     {
 360         for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
 361         {
 362             pi_left_skip[i_plane] = 0;
 363         }
 364
 365         for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
 366         {
 367             if( !p_vout->p_sys->pp_vout[ i_vout ].b_active )
 368             {
 369                 for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
 370                 {
 371                     pi_left_skip[i_plane] +=
 372                         p_vout->p_sys->pp_vout[ i_vout ].i_width
 373                          * p_pic->p[i_plane].i_pitch / p_vout->output.i_width;
 374                 }
 375                 i_vout++;
 376                 continue;
 377             }
 378
 379             while( ( p_outpic =
 380                 vout_CreatePicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 381                                     0, 0, 0 )
 382                    ) == NULL )
 383             {
 384                 if( p_vout->b_die || p_vout->b_error )
 385                 {
 386                     vout_DestroyPicture(
 387                         p_vout->p_sys->pp_vout[ i_vout ].p_vout, p_outpic );
 388                     return;
 389                 }
 390
 391                 msleep( VOUT_OUTMEM_SLEEP );
 392             }
 393
 394             vout_DatePicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 395                               p_outpic, p_pic->date );
 396             vout_LinkPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 397                               p_outpic );
 398
 399             for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
 400             {
 401                 u8 *p_in, *p_in_end, *p_out;
 402                 int i_in_pitch = p_pic->p[i_plane].i_pitch;
 403                 int i_out_pitch = p_outpic->p[i_plane].i_pitch;
 404
 405                 p_in = p_pic->p[i_plane].p_pixels
 406                         + pi_top_skip[i_plane] + pi_left_skip[i_plane];
 407
 408                 p_in_end = p_in + p_outpic->p[i_plane].i_lines
 409                                    * p_pic->p[i_plane].i_pitch;
 410
 411                 p_out = p_outpic->p[i_plane].p_pixels;
 412
 413                 while( p_in < p_in_end )
 414                 {
 415                     p_vout->p_vlc->pf_memcpy( p_out, p_in, i_out_pitch );
 416                     p_in += i_in_pitch;
 417                     p_out += i_out_pitch;
 418                 }
 419
 420                 pi_left_skip[i_plane] += i_out_pitch;
 421             }
 422
 423             vout_UnlinkPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 424                                 p_outpic );
 425             vout_DisplayPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
 426                                  p_outpic );
 427
 428             i_vout++;
 429         }
 430
 431         for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
 432         {
 433             pi_top_skip[i_plane] += p_vout->p_sys->pp_vout[ i_vout ].i_height
 434                                      * p_pic->p[i_plane].i_lines
 435                                      / p_vout->output.i_height
 436                                      * p_pic->p[i_plane].i_pitch;
 437         }
 438     }
 439 }
 440
 441 /*****************************************************************************
 442  * vout_Display: displays previously rendered output
 443  *****************************************************************************
 444  * This function send the currently rendered image to Invert image, waits
 445  * until it is displayed and switch the two rendering buffers, preparing next
 446  * frame.
 447  *****************************************************************************/
 448 static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )
 449 {
 450     ;
 451 }
 452
 453 /*****************************************************************************
 454  * RemoveAllVout: destroy all the child video output threads
 455  *****************************************************************************/
 456 static void RemoveAllVout( vout_thread_t *p_vout )
 457 {
 458     while( p_vout->p_sys->i_vout )
 459     {
 460          --p_vout->p_sys->i_vout;
 461          if( p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active )
 462          {
 463              vout_DestroyThread(
 464                p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout );
 465          }
 466     }
 467 }