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

   1 /*****************************************************************************
   2  * video_output.c : video output thread
   3  * This module describes the programming interface for video output threads.
   4  * It includes functions allowing to open a new thread, send pictures to a
   5  * thread, and destroy a previously oppened video output thread.
   6  *****************************************************************************
   7  * Copyright (C) 2000 VideoLAN
   8  *
   9  * Authors:
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  24  *****************************************************************************/
  25
  26 /*****************************************************************************
  27  * Preamble
  28  *****************************************************************************/
  29 #include "defs.h"
  30
  31 #include <errno.h>                                                 /* ENOMEM */
  32 #include <stdlib.h>                                                /* free() */
  33 #include <stdio.h>                                              /* sprintf() */
  34 #include <string.h>                                            /* strerror() */
  35
  36 #ifdef STATS
  37 #   include <sys/times.h>
  38 #endif
  39
  40 #include "config.h"
  41 #include "common.h"
  42 #include "threads.h"
  43 #include "mtime.h"
  44 #include "plugins.h"
  45 #include "video.h"
  46 #include "video_output.h"
  47 #include "video_text.h"
  48 #include "video_spu.h"
  49 #include "video_yuv.h"
  50
  51 #include "intf_msg.h"
  52 #include "main.h"
  53
  54 /*****************************************************************************
  55  * Local prototypes
  56  *****************************************************************************/
  57 static int      BinaryLog         ( u32 i );
  58 static void     MaskToShift       ( int *pi_left, int *pi_right, u32 i_mask );
  59 static int      InitThread        ( vout_thread_t *p_vout );
  60 static void     RunThread         ( vout_thread_t *p_vout );
  61 static void     ErrorThread       ( vout_thread_t *p_vout );
  62 static void     EndThread         ( vout_thread_t *p_vout );
  63 static void     DestroyThread     ( vout_thread_t *p_vout, int i_status );
  64 static void     Print             ( vout_thread_t *p_vout, int i_x, int i_y,
  65                                     int i_h_align, int i_v_align,
  66                                     unsigned char *psz_text );
  67 static void     SetBufferArea     ( vout_thread_t *p_vout, int i_x, int i_y,
  68                                     int i_w, int i_h );
  69 static void     SetBufferPicture  ( vout_thread_t *p_vout, picture_t *p_pic );
  70 static void     RenderPicture     ( vout_thread_t *p_vout, picture_t *p_pic );
  71 static void     RenderPictureInfo ( vout_thread_t *p_vout, picture_t *p_pic );
  72 static void     RenderSubPicture  ( vout_thread_t *p_vout,
  73                                     subpicture_t *p_subpic );
  74 static void     RenderInterface   ( vout_thread_t *p_vout );
  75 static int      RenderIdle        ( vout_thread_t *p_vout );
  76 static int      RenderSplash      ( vout_thread_t *p_vout );
  77 static void     RenderInfo        ( vout_thread_t *p_vout );
  78 static int      Manage            ( vout_thread_t *p_vout );
  79 static int      Align             ( vout_thread_t *p_vout, int *pi_x,
  80                                     int *pi_y, int i_width, int i_height,
  81                                     int i_h_align, int i_v_align );
  82 static void     SetPalette        ( p_vout_thread_t p_vout, u16 *red,
  83                                     u16 *green, u16 *blue, u16 *transp );
  84
  85 /*****************************************************************************
  86  * vout_CreateThread: creates a new video output thread
  87  *****************************************************************************
  88  * This function creates a new video output thread, and returns a pointer
  89  * to its description. On error, it returns NULL.
  90  * If pi_status is NULL, then the function will block until the thread is ready.
  91  * If not, it will be updated using one of the THREAD_* constants.
  92  *****************************************************************************/
  93 vout_thread_t * vout_CreateThread   ( char *psz_display, int i_root_window,
  94                           int i_width, int i_height, int *pi_status,
  95                           int i_method, void *p_data )
  96 {
  97     vout_thread_t * p_vout;                             /* thread descriptor */
  98     typedef void    ( vout_getplugin_t ) ( vout_thread_t * p_vout );
  99     int             i_status;                               /* thread status */
 100     int             i_index;               /* index for array initialization */
 101     int             i_best_index = 0, i_best_score = 0;
 102
 103     /* Allocate descriptor */
 104     p_vout = (vout_thread_t *) malloc( sizeof(vout_thread_t) );
 105     if( p_vout == NULL )
 106     {
 107         intf_ErrMsg( "vout error: vout thread creation returned %s",
 108                      strerror(ENOMEM) );
 109         return( NULL );
 110     }
 111
 112     p_vout->p_set_palette       = SetPalette;
 113
 114     /* Get a suitable video plugin */
 115     for( i_index = 0 ; i_index < p_main->p_bank->i_plugin_count ; i_index++ )
 116     {
 117         /* If there's a plugin in p_info ... */
 118         if( p_main->p_bank->p_info[ i_index ] != NULL )
 119         {
 120             /* ... and if this plugin provides the functions we want ... */
 121             if( p_main->p_bank->p_info[ i_index ]->vout_GetPlugin != NULL )
 122             {
 123                 /* ... and if this plugin has a good score ... */
 124                 if( p_main->p_bank->p_info[ i_index ]->i_score > i_best_score )
 125                 {
 126                     /* ... then take it */
 127                     i_best_score = p_main->p_bank->p_info[ i_index ]->i_score;
 128                     i_best_index = i_index;
 129                 }
 130             }
 131         }
 132     }
 133
 134     if( i_best_score == 0 )
 135     {
 136         free( p_vout );
 137         return( NULL );
 138     }
 139
 140     /* Get the plugin functions */
 141     ( (vout_getplugin_t *)
 142       p_main->p_bank->p_info[ i_best_index ]->vout_GetPlugin )( p_vout );
 143
 144     /* Initialize thread properties - thread id and locks will be initialized
 145      * later */
 146     p_vout->b_die               = 0;
 147     p_vout->b_error             = 0;
 148     p_vout->b_active            = 0;
 149     p_vout->pi_status           = (pi_status != NULL) ? pi_status : &i_status;
 150     *p_vout->pi_status          = THREAD_CREATE;
 151
 152     /* Initialize some fields used by the system-dependant method - these
 153      * fields will probably be modified by the method, and are only
 154      * preferences */
 155     p_vout->i_changes             = 0;
 156     p_vout->i_width               = i_width;
 157     p_vout->i_height              = i_height;
 158     p_vout->i_bytes_per_line      = i_width * 2;
 159     p_vout->i_screen_depth        = 15;
 160     p_vout->i_bytes_per_pixel     = 2;
 161     p_vout->f_gamma               = VOUT_GAMMA;
 162     p_vout->b_need_render         = 1;
 163
 164     p_vout->b_grayscale           = main_GetIntVariable( VOUT_GRAYSCALE_VAR,
 165                                                        VOUT_GRAYSCALE_DEFAULT );
 166     p_vout->b_info                = 0;
 167     p_vout->b_interface           = 0;
 168     p_vout->b_scale               = 1;
 169
 170     intf_DbgMsg( "wished configuration: %dx%d, %d/%d bpp (%d Bpl)",
 171                  p_vout->i_width, p_vout->i_height, p_vout->i_screen_depth,
 172                  p_vout->i_bytes_per_pixel * 8, p_vout->i_bytes_per_line );
 173
 174     /* Initialize idle screen */
 175     p_vout->last_display_date   = 0;
 176     p_vout->last_idle_date      = 0;
 177     p_vout->init_display_date   = mdate();
 178     p_vout->render_time         = 10000;
 179
 180     /* Initialize statistics fields */
 181     p_vout->c_fps_samples       = 0;
 182
 183     /* Initialize buffer index */
 184     p_vout->i_buffer_index      = 0;
 185
 186     /* Initialize pictures and subpictures - translation tables and functions
 187      * will be initialized later in InitThread */
 188     for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++)
 189     {
 190         p_vout->p_picture[i_index].i_type   =   EMPTY_PICTURE;
 191         p_vout->p_picture[i_index].i_status =   FREE_PICTURE;
 192     }
 193     for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++)
 194     {
 195         p_vout->p_subpicture[i_index].i_type  = EMPTY_SUBPICTURE;
 196         p_vout->p_subpicture[i_index].i_status= FREE_SUBPICTURE;
 197     }
 198     p_vout->i_pictures = 0;
 199
 200     /* Create and initialize system-dependant method - this function issues its
 201      * own error messages */
 202     if( p_vout->p_sys_create( p_vout, psz_display, i_root_window, p_data ) )
 203     {
 204         free( p_vout );
 205         return( NULL );
 206     }
 207     intf_DbgMsg( "actual configuration: %dx%d, %d/%d bpp (%d Bpl), "
 208                  "masks: 0x%x/0x%x/0x%x",
 209                  p_vout->i_width, p_vout->i_height, p_vout->i_screen_depth,
 210                  p_vout->i_bytes_per_pixel * 8, p_vout->i_bytes_per_line,
 211                  p_vout->i_red_mask, p_vout->i_green_mask,
 212                  p_vout->i_blue_mask );
 213
 214     /* Calculate shifts from system-updated masks */
 215     MaskToShift( &p_vout->i_red_lshift, &p_vout->i_red_rshift,
 216                  p_vout->i_red_mask );
 217     MaskToShift( &p_vout->i_green_lshift, &p_vout->i_green_rshift,
 218                  p_vout->i_green_mask );
 219     MaskToShift( &p_vout->i_blue_lshift, &p_vout->i_blue_rshift,
 220                  p_vout->i_blue_mask );
 221
 222     /* Set some useful colors */
 223     p_vout->i_white_pixel = RGB2PIXEL( p_vout, 255, 255, 255 );
 224     p_vout->i_black_pixel = RGB2PIXEL( p_vout, 0, 0, 0 );
 225     p_vout->i_gray_pixel  = RGB2PIXEL( p_vout, 128, 128, 128 );
 226     p_vout->i_blue_pixel  = RGB2PIXEL( p_vout, 0, 0, 50 );
 227
 228     /* Load fonts - fonts must be initialized after the system method since
 229      * they may be dependant on screen depth and other thread properties */
 230     p_vout->p_default_font = vout_LoadFont( DATA_PATH "/" VOUT_DEFAULT_FONT );
 231     if( p_vout->p_default_font == NULL )
 232     {
 233         p_vout->p_default_font = vout_LoadFont( "share/" VOUT_DEFAULT_FONT );
 234     }
 235     if( p_vout->p_default_font == NULL )
 236     {
 237         intf_ErrMsg( "vout error: could not load default font" );
 238         p_vout->p_sys_destroy( p_vout );
 239         free( p_vout );
 240         return( NULL );
 241     }
 242     p_vout->p_large_font = vout_LoadFont( DATA_PATH "/" VOUT_LARGE_FONT );
 243     if( p_vout->p_large_font == NULL )
 244     {
 245         p_vout->p_large_font = vout_LoadFont( "share/" VOUT_LARGE_FONT );
 246     }
 247     if( p_vout->p_large_font == NULL )
 248     {
 249         intf_ErrMsg( "vout error: could not load large font" );
 250         vout_UnloadFont( p_vout->p_default_font );
 251         p_vout->p_sys_destroy( p_vout );
 252         free( p_vout );
 253         return( NULL );
 254     }
 255
 256     /* Create thread and set locks */
 257     vlc_mutex_init( &p_vout->picture_lock );
 258     vlc_mutex_init( &p_vout->subpicture_lock );
 259     vlc_mutex_init( &p_vout->change_lock );
 260
 261     if( vlc_thread_create( &p_vout->thread_id, "video output",
 262                            (void *) RunThread, (void *) p_vout) )
 263     {
 264         intf_ErrMsg("vout error: %s", strerror(ENOMEM));
 265         vout_UnloadFont( p_vout->p_default_font );
 266         vout_UnloadFont( p_vout->p_large_font );
 267         p_vout->p_sys_destroy( p_vout );
 268         free( p_vout );
 269         return( NULL );
 270     }
 271
 272     intf_Msg( "Video display initialized (%dx%d, %d/%d bpp)", p_vout->i_width,
 273               p_vout->i_height, p_vout->i_screen_depth,
 274               p_vout->i_bytes_per_pixel * 8 );
 275
 276     /* If status is NULL, wait until the thread is created */
 277     if( pi_status == NULL )
 278     {
 279         do
 280         {
 281             msleep( THREAD_SLEEP );
 282         }while( (i_status != THREAD_READY) && (i_status != THREAD_ERROR)
 283                 && (i_status != THREAD_FATAL) );
 284         if( i_status != THREAD_READY )
 285         {
 286             return( NULL );
 287         }
 288     }
 289     return( p_vout );
 290 }
 291
 292 /*****************************************************************************
 293  * vout_DestroyThread: destroys a previously created thread
 294  *****************************************************************************
 295  * Destroy a terminated thread.
 296  * The function will request a destruction of the specified thread. If pi_error
 297  * is NULL, it will return once the thread is destroyed. Else, it will be
 298  * update using one of the THREAD_* constants.
 299  *****************************************************************************/
 300 void vout_DestroyThread( vout_thread_t *p_vout, int *pi_status )
 301 {
 302     int     i_status;                                       /* thread status */
 303
 304     /* Set status */
 305     intf_DbgMsg("");
 306     p_vout->pi_status = (pi_status != NULL) ? pi_status : &i_status;
 307     *p_vout->pi_status = THREAD_DESTROY;
 308
 309     /* Request thread destruction */
 310     p_vout->b_die = 1;
 311
 312     /* If status is NULL, wait until thread has been destroyed */
 313     if( pi_status == NULL )
 314     {
 315         do
 316         {
 317             msleep( THREAD_SLEEP );
 318         }while( (i_status != THREAD_OVER) && (i_status != THREAD_ERROR)
 319                 && (i_status != THREAD_FATAL) );
 320     }
 321 }
 322
 323 /*****************************************************************************
 324  * vout_DisplaySubPicture: display a subpicture unit
 325  *****************************************************************************
 326  * Remove the reservation flag of an subpicture, which will cause it to be ready
 327  * for display. The picture does not need to be locked, since it is ignored by
 328  * the output thread if is reserved.
 329  *****************************************************************************/
 330 void  vout_DisplaySubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
 331 {
 332 #ifdef DEBUG_VOUT
 333     char        psz_begin_date[MSTRTIME_MAX_SIZE]; /* buffer for date string */
 334     char        psz_end_date[MSTRTIME_MAX_SIZE];   /* buffer for date string */
 335 #endif
 336
 337 #ifdef DEBUG
 338     /* Check if status is valid */
 339     if( p_subpic->i_status != RESERVED_SUBPICTURE )
 340     {
 341         intf_DbgMsg("error: subpicture %p has invalid status %d", p_subpic,
 342                     p_subpic->i_status );
 343     }
 344 #endif
 345
 346     /* Remove reservation flag */
 347     p_subpic->i_status = READY_SUBPICTURE;
 348
 349 #ifdef DEBUG_VOUT
 350     /* Send subpicture information */
 351     intf_DbgMsg("subpicture %p: type=%d, begin date=%s, end date=%s",
 352                 p_subpic, p_subpic->i_type,
 353                 mstrtime( psz_begin_date, p_subpic->begin_date ),
 354                 mstrtime( psz_end_date, p_subpic->end_date ) );
 355 #endif
 356 }
 357
 358 /*****************************************************************************
 359  * vout_CreateSubPicture: allocate a subpicture in the video output heap.
 360  *****************************************************************************
 361  * This function create a reserved subpicture in the video output heap.
 362  * A null pointer is returned if the function fails. This method provides an
 363  * already allocated zone of memory in the spu data fields. It needs locking
 364  * since several pictures can be created by several producers threads.
 365  *****************************************************************************/
 366 subpicture_t *vout_CreateSubPicture( vout_thread_t *p_vout, int i_type,
 367                                      int i_size )
 368 {
 369     int                 i_subpic;                        /* subpicture index */
 370     subpicture_t *      p_free_subpic = NULL;       /* first free subpicture */
 371     subpicture_t *      p_destroyed_subpic = NULL; /* first destroyed subpic */
 372
 373     /* Get lock */
 374     vlc_mutex_lock( &p_vout->subpicture_lock );
 375
 376     /*
 377      * Look for an empty place
 378      */
 379     for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
 380     {
 381         if( p_vout->p_subpicture[i_subpic].i_status == DESTROYED_SUBPICTURE )
 382         {
 383             /* Subpicture is marked for destruction, but is still allocated */
 384             if( (p_vout->p_subpicture[i_subpic].i_type  == i_type)   &&
 385                 (p_vout->p_subpicture[i_subpic].i_size  >= i_size) )
 386             {
 387                 /* Memory size do match or is smaller : memory will not be
 388                  * reallocated, and function can end immediately - this is
 389                  * the best possible case, since no memory allocation needs
 390                  * to be done */
 391                 p_vout->p_subpicture[i_subpic].i_status = RESERVED_SUBPICTURE;
 392 #ifdef DEBUG_VOUT
 393                 intf_DbgMsg("subpicture %p (in destroyed subpicture slot)",
 394                             &p_vout->p_subpicture[i_subpic] );
 395 #endif
 396                 vlc_mutex_unlock( &p_vout->subpicture_lock );
 397                 return( &p_vout->p_subpicture[i_subpic] );
 398             }
 399             else if( p_destroyed_subpic == NULL )
 400             {
 401                 /* Memory size do not match, but subpicture index will be kept in
 402                  * case no other place are left */
 403                 p_destroyed_subpic = &p_vout->p_subpicture[i_subpic];
 404             }
 405         }
 406         else if( (p_free_subpic == NULL) &&
 407                  (p_vout->p_subpicture[i_subpic].i_status == FREE_SUBPICTURE ))
 408         {
 409             /* Subpicture is empty and ready for allocation */
 410             p_free_subpic = &p_vout->p_subpicture[i_subpic];
 411         }
 412     }
 413
 414     /* If no free subpictures are available, use a destroyed subpicture */
 415     if( (p_free_subpic == NULL) && (p_destroyed_subpic != NULL ) )
 416     {
 417         /* No free subpicture or matching destroyed subpictures have been
 418          * found, but a destroyed subpicture is still avalaible */
 419         free( p_destroyed_subpic->p_data );
 420         p_free_subpic = p_destroyed_subpic;
 421     }
 422
 423     /*
 424      * Prepare subpicture
 425      */
 426     if( p_free_subpic != NULL )
 427     {
 428         /* Allocate memory */
 429         switch( i_type )
 430         {
 431         case TEXT_SUBPICTURE:                             /* text subpicture */
 432             p_free_subpic->p_data = malloc( i_size + 1 );
 433             break;
 434         case DVD_SUBPICTURE:                          /* DVD subpicture unit */
 435             p_free_subpic->p_data = malloc( i_size );
 436             break;
 437 #ifdef DEBUG
 438         default:
 439             intf_DbgMsg("error: unknown subpicture type %d", i_type );
 440             p_free_subpic->p_data   =  NULL;
 441             break;
 442 #endif
 443         }
 444
 445         if( p_free_subpic->p_data != NULL )
 446         {
 447             /* Copy subpicture information, set some default values */
 448             p_free_subpic->i_type                      = i_type;
 449             p_free_subpic->i_status                    = RESERVED_SUBPICTURE;
 450             p_free_subpic->i_size                      = i_size;
 451             p_free_subpic->i_x                         = 0;
 452             p_free_subpic->i_y                         = 0;
 453             p_free_subpic->i_width                     = 0;
 454             p_free_subpic->i_height                    = 0;
 455             p_free_subpic->i_horizontal_align          = CENTER_RALIGN;
 456             p_free_subpic->i_vertical_align            = CENTER_RALIGN;
 457         }
 458         else
 459         {
 460             /* Memory allocation failed : set subpicture as empty */
 461             p_free_subpic->i_type   =  EMPTY_SUBPICTURE;
 462             p_free_subpic->i_status =  FREE_SUBPICTURE;
 463             p_free_subpic =            NULL;
 464             intf_ErrMsg( "vout error: spu allocation returned %s",
 465                          strerror( ENOMEM ) );
 466         }
 467
 468 #ifdef DEBUG_VOUT
 469         intf_DbgMsg("subpicture %p (in free subpicture slot)", p_free_subpic );
 470 #endif
 471         vlc_mutex_unlock( &p_vout->subpicture_lock );
 472         return( p_free_subpic );
 473     }
 474
 475     /* No free or destroyed subpicture could be found */
 476     intf_DbgMsg( "warning: subpicture heap is full" );
 477     vlc_mutex_unlock( &p_vout->subpicture_lock );
 478     return( NULL );
 479 }
 480
 481 /*****************************************************************************
 482  * vout_DestroySubPicture: remove a subpicture from the heap
 483  *****************************************************************************
 484  * This function frees a previously reserved subpicture.
 485  * It is meant to be used when the construction of a picture aborted.
 486  * This function does not need locking since reserved subpictures are ignored
 487  * by the output thread.
 488  *****************************************************************************/
 489 void vout_DestroySubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
 490 {
 491 #ifdef DEBUG
 492    /* Check if status is valid */
 493    if( p_subpic->i_status != RESERVED_SUBPICTURE )
 494    {
 495        intf_DbgMsg("error: subpicture %p has invalid status %d",
 496                    p_subpic, p_subpic->i_status );
 497    }
 498 #endif
 499
 500     p_subpic->i_status = DESTROYED_SUBPICTURE;
 501
 502 #ifdef DEBUG_VOUT
 503     intf_DbgMsg("subpicture %p", p_subpic);
 504 #endif
 505 }
 506
 507 /*****************************************************************************
 508  * vout_DisplayPicture: display a picture
 509  *****************************************************************************
 510  * Remove the reservation flag of a picture, which will cause it to be ready for
 511  * display. The picture won't be displayed until vout_DatePicture has been
 512  * called.
 513  *****************************************************************************/
 514 void  vout_DisplayPicture( vout_thread_t *p_vout, picture_t *p_pic )
 515 {
 516     vlc_mutex_lock( &p_vout->picture_lock );
 517     switch( p_pic->i_status )
 518     {
 519     case RESERVED_PICTURE:
 520         p_pic->i_status = RESERVED_DISP_PICTURE;
 521         break;
 522     case RESERVED_DATED_PICTURE:
 523         p_pic->i_status = READY_PICTURE;
 524         break;
 525 #ifdef DEBUG
 526     default:
 527         intf_DbgMsg("error: picture %p has invalid status %d", p_pic, p_pic->i_status );
 528         break;
 529 #endif
 530     }
 531
 532 #ifdef DEBUG_VOUT
 533     intf_DbgMsg("picture %p", p_pic);
 534 #endif
 535     vlc_mutex_unlock( &p_vout->picture_lock );
 536 }
 537
 538 /*****************************************************************************
 539  * vout_DatePicture: date a picture
 540  *****************************************************************************
 541  * Remove the reservation flag of a picture, which will cause it to be ready for
 542  * display. The picture won't be displayed until vout_DisplayPicture has been
 543  * called.
 544  *****************************************************************************/
 545 void  vout_DatePicture( vout_thread_t *p_vout, picture_t *p_pic, mtime_t date )
 546 {
 547 #ifdef DEBUG_VOUT
 548     char        psz_date[MSTRTIME_MAX_SIZE];                         /* date */
 549 #endif
 550
 551     vlc_mutex_lock( &p_vout->picture_lock );
 552     p_pic->date = date;
 553     switch( p_pic->i_status )
 554     {
 555     case RESERVED_PICTURE:
 556         p_pic->i_status = RESERVED_DATED_PICTURE;
 557         break;
 558     case RESERVED_DISP_PICTURE:
 559         p_pic->i_status = READY_PICTURE;
 560         break;
 561 #ifdef DEBUG
 562     default:
 563         intf_DbgMsg("error: picture %p has invalid status %d", p_pic, p_pic->i_status );
 564         break;
 565 #endif
 566     }
 567
 568 #ifdef DEBUG_VOUT
 569     intf_DbgMsg("picture %p, display date: %s", p_pic, mstrtime( psz_date, p_pic->date) );
 570 #endif
 571     vlc_mutex_unlock( &p_vout->picture_lock );
 572 }
 573
 574 /*****************************************************************************
 575  * vout_CreatePicture: allocate a picture in the video output heap.
 576  *****************************************************************************
 577  * This function create a reserved image in the video output heap.
 578  * A null pointer is returned if the function fails. This method provides an
 579  * already allocated zone of memory in the picture data fields. It needs locking
 580  * since several pictures can be created by several producers threads.
 581  *****************************************************************************/
 582 picture_t *vout_CreatePicture( vout_thread_t *p_vout, int i_type,
 583                                int i_width, int i_height )
 584 {
 585     int         i_picture;                                  /* picture index */
 586     int         i_chroma_width = 0;                          /* chroma width */
 587     picture_t * p_free_picture = NULL;                 /* first free picture */
 588     picture_t * p_destroyed_picture = NULL;       /* first destroyed picture */
 589
 590     /* Get lock */
 591     vlc_mutex_lock( &p_vout->picture_lock );
 592
 593     /*
 594      * Look for an empty place
 595      */
 596     for( i_picture = 0; i_picture < VOUT_MAX_PICTURES; i_picture++ )
 597     {
 598         if( p_vout->p_picture[i_picture].i_status == DESTROYED_PICTURE )
 599         {
 600             /* Picture is marked for destruction, but is still allocated - note
 601              * that if width and type are the same for two pictures, chroma_width
 602              * should also be the same */
 603             if( (p_vout->p_picture[i_picture].i_type           == i_type)   &&
 604                 (p_vout->p_picture[i_picture].i_height         == i_height) &&
 605                 (p_vout->p_picture[i_picture].i_width          == i_width) )
 606             {
 607                 /* Memory size do match : memory will not be reallocated, and function
 608                  * can end immediately - this is the best possible case, since no
 609                  * memory allocation needs to be done */
 610                 p_vout->p_picture[i_picture].i_status = RESERVED_PICTURE;
 611                 p_vout->i_pictures++;
 612 #ifdef DEBUG_VOUT
 613                 intf_DbgMsg("picture %p (in destroyed picture slot)",
 614                             &p_vout->p_picture[i_picture] );
 615 #endif
 616                 vlc_mutex_unlock( &p_vout->picture_lock );
 617                 return( &p_vout->p_picture[i_picture] );
 618             }
 619             else if( p_destroyed_picture == NULL )
 620             {
 621                 /* Memory size do not match, but picture index will be kept in
 622                  * case no other place are left */
 623                 p_destroyed_picture = &p_vout->p_picture[i_picture];
 624             }
 625         }
 626         else if( (p_free_picture == NULL) &&
 627                  (p_vout->p_picture[i_picture].i_status == FREE_PICTURE ))
 628         {
 629             /* Picture is empty and ready for allocation */
 630             p_free_picture = &p_vout->p_picture[i_picture];
 631         }
 632     }
 633
 634     /* If no free picture is available, use a destroyed picture */
 635     if( (p_free_picture == NULL) && (p_destroyed_picture != NULL ) )
 636     {
 637         /* No free picture or matching destroyed picture has been found, but
 638          * a destroyed picture is still avalaible */
 639         free( p_destroyed_picture->p_data );
 640         p_free_picture = p_destroyed_picture;
 641     }
 642
 643     /*
 644      * Prepare picture
 645      */
 646     if( p_free_picture != NULL )
 647     {
 648         /* Allocate memory */
 649         switch( i_type )
 650         {
 651         case YUV_420_PICTURE:        /* YUV 420: 1,1/4,1/4 samples per pixel */
 652             i_chroma_width = i_width / 2;
 653             p_free_picture->p_data = malloc( i_height * i_chroma_width * 3 * sizeof( yuv_data_t ) );
 654             p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
 655             p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*4/2;
 656             p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*5/2;
 657             break;
 658         case YUV_422_PICTURE:        /* YUV 422: 1,1/2,1/2 samples per pixel */
 659             i_chroma_width = i_width / 2;
 660             p_free_picture->p_data = malloc( i_height * i_chroma_width * 4 * sizeof( yuv_data_t ) );
 661             p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
 662             p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*2;
 663             p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*3;
 664             break;
 665         case YUV_444_PICTURE:            /* YUV 444: 1,1,1 samples per pixel */
 666             i_chroma_width = i_width;
 667             p_free_picture->p_data = malloc( i_height * i_chroma_width * 3 * sizeof( yuv_data_t ) );
 668             p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
 669             p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width;
 670             p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*2;
 671             break;
 672 #ifdef DEBUG
 673         default:
 674             intf_DbgMsg("error: unknown picture type %d", i_type );
 675             p_free_picture->p_data   =  NULL;
 676             break;
 677 #endif
 678         }
 679
 680         if( p_free_picture->p_data != NULL )
 681         {
 682             /* Copy picture information, set some default values */
 683             p_free_picture->i_type                      = i_type;
 684             p_free_picture->i_status                    = RESERVED_PICTURE;
 685             p_free_picture->i_matrix_coefficients       = 1;
 686             p_free_picture->i_width                     = i_width;
 687             p_free_picture->i_height                    = i_height;
 688             p_free_picture->i_chroma_width              = i_chroma_width;
 689             p_free_picture->i_display_horizontal_offset = 0;
 690             p_free_picture->i_display_vertical_offset   = 0;
 691             p_free_picture->i_display_width             = i_width;
 692             p_free_picture->i_display_height            = i_height;
 693             p_free_picture->i_aspect_ratio              = AR_SQUARE_PICTURE;
 694             p_free_picture->i_refcount                  = 0;
 695             p_vout->i_pictures++;
 696         }
 697         else
 698         {
 699             /* Memory allocation failed : set picture as empty */
 700             p_free_picture->i_type   =  EMPTY_PICTURE;
 701             p_free_picture->i_status =  FREE_PICTURE;
 702             p_free_picture =            NULL;
 703             intf_ErrMsg( "vout error: picture allocation returned %s",
 704                          strerror( ENOMEM ) );
 705         }
 706
 707 #ifdef DEBUG_VOUT
 708         intf_DbgMsg("picture %p (in free picture slot)", p_free_picture );
 709 #endif
 710         vlc_mutex_unlock( &p_vout->picture_lock );
 711         return( p_free_picture );
 712     }
 713
 714     /* No free or destroyed picture could be found */
 715     intf_DbgMsg( "warning: picture heap is full" );
 716     vlc_mutex_unlock( &p_vout->picture_lock );
 717     return( NULL );
 718 }
 719
 720 /*****************************************************************************
 721  * vout_DestroyPicture: remove a permanent or reserved picture from the heap
 722  *****************************************************************************
 723  * This function frees a previously reserved picture or a permanent
 724  * picture. It is meant to be used when the construction of a picture aborted.
 725  * Note that the picture will be destroyed even if it is linked !
 726  *****************************************************************************/
 727 void vout_DestroyPicture( vout_thread_t *p_vout, picture_t *p_pic )
 728 {
 729    vlc_mutex_lock( &p_vout->picture_lock );
 730
 731 #ifdef DEBUG
 732    /* Check if picture status is valid */
 733    if( (p_pic->i_status != RESERVED_PICTURE) &&
 734        (p_pic->i_status != RESERVED_DATED_PICTURE) &&
 735        (p_pic->i_status != RESERVED_DISP_PICTURE) )
 736    {
 737        intf_DbgMsg("error: picture %p has invalid status %d", p_pic, p_pic->i_status );
 738    }
 739 #endif
 740
 741    p_pic->i_status = DESTROYED_PICTURE;
 742    p_vout->i_pictures--;
 743
 744 #ifdef DEBUG_VOUT
 745    intf_DbgMsg("picture %p", p_pic);
 746 #endif
 747    vlc_mutex_unlock( &p_vout->picture_lock );
 748 }
 749
 750 /*****************************************************************************
 751  * vout_LinkPicture: increment reference counter of a picture
 752  *****************************************************************************
 753  * This function increment the reference counter of a picture in the video
 754  * heap. It needs a lock since several producer threads can access the picture.
 755  *****************************************************************************/
 756 void vout_LinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
 757 {
 758     vlc_mutex_lock( &p_vout->picture_lock );
 759     p_pic->i_refcount++;
 760
 761 #ifdef DEBUG_VOUT
 762     intf_DbgMsg("picture %p refcount=%d", p_pic, p_pic->i_refcount );
 763 #endif
 764
 765     vlc_mutex_unlock( &p_vout->picture_lock );
 766 }
 767
 768 /*****************************************************************************
 769  * vout_UnlinkPicture: decrement reference counter of a picture
 770  *****************************************************************************
 771  * This function decrement the reference counter of a picture in the video heap.
 772  *****************************************************************************/
 773 void vout_UnlinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
 774 {
 775     vlc_mutex_lock( &p_vout->picture_lock );
 776     p_pic->i_refcount--;
 777
 778 #ifdef DEBUG_VOUT
 779     if( p_pic->i_refcount < 0 )
 780     {
 781         intf_DbgMsg("error: refcount < 0");
 782         p_pic->i_refcount = 0;
 783     }
 784 #endif
 785
 786     if( (p_pic->i_refcount == 0) && (p_pic->i_status == DISPLAYED_PICTURE) )
 787     {
 788         p_pic->i_status = DESTROYED_PICTURE;
 789         p_vout->i_pictures--;
 790     }
 791
 792 #ifdef DEBUG_VOUT
 793     intf_DbgMsg("picture %p refcount=%d", p_pic, p_pic->i_refcount );
 794 #endif
 795
 796     vlc_mutex_unlock( &p_vout->picture_lock );
 797 }
 798
 799 /*****************************************************************************
 800  * vout_SetBuffers: set buffers adresses
 801  *****************************************************************************
 802  * This function is called by system drivers to set buffers video memory
 803  * adresses.
 804  *****************************************************************************/
 805 void vout_SetBuffers( vout_thread_t *p_vout, void *p_buf1, void *p_buf2 )
 806 {
 807     /* No picture previously */
 808     p_vout->p_buffer[0].i_pic_x =         0;
 809     p_vout->p_buffer[0].i_pic_y =         0;
 810     p_vout->p_buffer[0].i_pic_width =     0;
 811     p_vout->p_buffer[0].i_pic_height =    0;
 812     p_vout->p_buffer[1].i_pic_x =         0;
 813     p_vout->p_buffer[1].i_pic_y =         0;
 814     p_vout->p_buffer[1].i_pic_width =     0;
 815     p_vout->p_buffer[1].i_pic_height =    0;
 816
 817     /* The first area covers all the screen */
 818     p_vout->p_buffer[0].i_areas =                 1;
 819     p_vout->p_buffer[0].pi_area_begin[0] =        0;
 820     p_vout->p_buffer[0].pi_area_end[0] =          p_vout->i_height - 1;
 821     p_vout->p_buffer[1].i_areas =                 1;
 822     p_vout->p_buffer[1].pi_area_begin[0] =        0;
 823     p_vout->p_buffer[1].pi_area_end[0] =          p_vout->i_height - 1;
 824
 825     /* Set adresses */
 826     p_vout->p_buffer[0].p_data = p_buf1;
 827     p_vout->p_buffer[1].p_data = p_buf2;
 828 }
 829
 830 /*****************************************************************************
 831  * vout_Pixel2RGB: return red, green and blue from pixel value
 832  *****************************************************************************
 833  * Return color values, in 0-255 range, of the decomposition of a pixel. This
 834  * is a slow routine and should only be used for initialization phase.
 835  *****************************************************************************/
 836 void vout_Pixel2RGB( vout_thread_t *p_vout, u32 i_pixel, int *pi_red, int *pi_green, int *pi_blue )
 837 {
 838     *pi_red =   i_pixel & p_vout->i_red_mask;
 839     *pi_green = i_pixel & p_vout->i_green_mask;
 840     *pi_blue =  i_pixel & p_vout->i_blue_mask;
 841 }
 842
 843 /* following functions are local */
 844
 845 /*****************************************************************************
 846  * BinaryLog: computes the base 2 log of a binary value
 847  *****************************************************************************
 848  * This functions is used by MaskToShift, to get a bit index from a binary
 849  * value.
 850  *****************************************************************************/
 851 static int BinaryLog(u32 i)
 852 {
 853     int i_log;
 854
 855     i_log = 0;
 856     if (i & 0xffff0000)
 857     {
 858         i_log = 16;
 859     }
 860     if (i & 0xff00ff00)
 861     {
 862         i_log += 8;
 863     }
 864     if (i & 0xf0f0f0f0)
 865     {
 866         i_log += 4;
 867     }
 868     if (i & 0xcccccccc)
 869     {
 870         i_log += 2;
 871     }
 872     if (i & 0xaaaaaaaa)
 873     {
 874         i_log++;
 875     }
 876     if (i != ((u32)1 << i_log))
 877     {
 878         intf_DbgMsg("internal error: binary log overflow");
 879     }
 880
 881     return( i_log );
 882 }
 883
 884 /*****************************************************************************
 885  * MaskToShift: transform a color mask into right and left shifts
 886  *****************************************************************************
 887  * This function is used for obtaining color shifts from masks.
 888  *****************************************************************************/
 889 static void MaskToShift( int *pi_left, int *pi_right, u32 i_mask )
 890 {
 891     u32 i_low, i_high;                 /* lower hand higher bits of the mask */
 892
 893     /* Get bits */
 894     i_low =  i_mask & (- i_mask);                   /* lower bit of the mask */
 895     i_high = i_mask + i_low;                       /* higher bit of the mask */
 896
 897     /* Transform bits into an index */
 898     i_low =  BinaryLog (i_low);
 899     i_high = BinaryLog (i_high);
 900
 901     /* Update pointers and return */
 902     *pi_left =   i_low;
 903     *pi_right = (8 - i_high + i_low);
 904 }
 905
 906 /*****************************************************************************
 907  * InitThread: initialize video output thread
 908  *****************************************************************************
 909  * This function is called from RunThread and performs the second step of the
 910  * initialization. It returns 0 on success. Note that the thread's flag are not
 911  * modified inside this function.
 912  *****************************************************************************/
 913 static int InitThread( vout_thread_t *p_vout )
 914 {
 915     /* Update status */
 916     *p_vout->pi_status = THREAD_START;
 917
 918     vlc_mutex_lock( &p_vout->change_lock );
 919
 920 #ifdef STATS
 921     p_vout->c_loops = 0;
 922 #endif
 923
 924    /* Initialize output method - this function issues its own error messages */
 925     if( p_vout->p_sys_init( p_vout ) )
 926     {
 927         return( 1 );
 928     }
 929
 930     if( p_vout->b_need_render )
 931     {
 932         /* Initialize convertion tables and functions */
 933         if( vout_InitYUV( p_vout ) )
 934         {
 935             intf_ErrMsg("vout error: can't allocate YUV translation tables");
 936             return( 1 );
 937         }
 938     }
 939
 940     /* Mark thread as running and return */
 941     p_vout->b_active =          1;
 942     *p_vout->pi_status =        THREAD_READY;
 943
 944
 945     intf_DbgMsg("thread ready");
 946     return( 0 );
 947 }
 948
 949 /*****************************************************************************
 950  * RunThread: video output thread
 951  *****************************************************************************
 952  * Video output thread. This function does only returns when the thread is
 953  * terminated. It handles the pictures arriving in the video heap and the
 954  * display device events.
 955  *****************************************************************************/
 956 static void RunThread( vout_thread_t *p_vout)
 957 {
 958     int             i_index;                                /* index in heap */
 959     mtime_t         current_date;                            /* current date */
 960     mtime_t         display_date;                            /* display date */
 961     boolean_t       b_display;                               /* display flag */
 962     picture_t *     p_pic;                                /* picture pointer */
 963     subpicture_t *  p_subpic;                          /* subpicture pointer */
 964
 965     /*
 966      * Initialize thread
 967      */
 968     p_vout->b_error = InitThread( p_vout );
 969     if( p_vout->b_error )
 970     {
 971         DestroyThread( p_vout, THREAD_ERROR );
 972         return;
 973     }
 974
 975     /*
 976      * Main loop - it is not executed if an error occured during
 977      * initialization
 978      */
 979     while( (!p_vout->b_die) && (!p_vout->b_error) )
 980     {
 981         /* Initialize loop variables */
 982         p_pic =         NULL;
 983         p_subpic =      NULL;
 984         display_date =  0;
 985         current_date =  mdate();
 986 #ifdef STATS
 987         p_vout->c_loops++;
 988         if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
 989         {
 990             intf_Msg("vout stats: picture heap: %d/%d",
 991                      p_vout->i_pictures, VOUT_MAX_PICTURES);
 992         }
 993 #endif
 994
 995         /*
 996          * Find the picture to display - this operation does not need lock,
 997          * since only READY_PICTUREs are handled
 998          */
 999         for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++ )
1000         {
1001             if( (p_vout->p_picture[i_index].i_status == READY_PICTURE) &&
1002             ( (p_pic == NULL) ||
1003               (p_vout->p_picture[i_index].date < display_date) ) )
1004             {
1005                 p_pic = &p_vout->p_picture[i_index];
1006                 display_date = p_pic->date;
1007             }
1008         }
1009
1010         if( p_pic )
1011         {
1012             /* Computes FPS rate */
1013             p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ] = display_date;
1014
1015             if( display_date < current_date - p_vout->render_time )
1016             {
1017                 /* Picture is late: it will be destroyed and the thread
1018                  * will sleep and go to next picture */
1019
1020                 vlc_mutex_lock( &p_vout->picture_lock );
1021                 if( p_pic->i_refcount )
1022                 {
1023                     p_pic->i_status = DISPLAYED_PICTURE;
1024                 }
1025                 else
1026                 {
1027                     p_pic->i_status = DESTROYED_PICTURE;
1028                     p_vout->i_pictures--;
1029                 }
1030                 intf_WarnMsg( 3,
1031                         "warning: late picture skipped (%p)", p_pic );
1032                 vlc_mutex_unlock( &p_vout->picture_lock );
1033
1034                 continue;
1035             }
1036             else if( display_date > current_date + VOUT_DISPLAY_DELAY )
1037             {
1038                 /* A picture is ready to be rendered, but its rendering date
1039                  * is far from the current one so the thread will perform an
1040                  * empty loop as if no picture were found. The picture state
1041                  * is unchanged */
1042                 p_pic =         NULL;
1043                 display_date =  0;
1044             }
1045         }
1046         /*
1047          * Find the subpictures to display - this operation does not need
1048          * lock, since only READY_SUBPICTURE are handled. If no picture
1049          * has been selected, display_date will depend on the subpicture.
1050          * We get an easily parsable chained list of subpictures which
1051          * ends with NULL since p_subpic was initialized to NULL.
1052          */
1053         for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
1054         {
1055             if( p_vout->p_subpicture[i_index].i_status == READY_SUBPICTURE )
1056             {
1057                 p_vout->p_subpicture[i_index].p_next = p_subpic;
1058                 p_subpic = &p_vout->p_subpicture[i_index];
1059             }
1060         }
1061
1062         /*
1063          * Perform rendering, sleep and display rendered picture
1064          */
1065         if( p_pic )                        /* picture and perhaps subpicture */
1066         {
1067             b_display = p_vout->b_active;
1068             p_vout->last_display_date = display_date;
1069             p_vout->p_rendered_pic = p_pic;
1070
1071
1072
1073
1074             /* Set picture dimensions and clear buffer */
1075             SetBufferPicture( p_vout, p_pic );
1076
1077             /* FIXME: if b_need_render == 0 we need to do something with
1078              * the subpictures one day. */
1079
1080             if( p_vout->b_need_render && b_display )
1081             {
1082                 /* Render picture and information */
1083                 RenderPicture( p_vout, p_pic );
1084                 if( p_vout->b_info )
1085                 {
1086                     RenderPictureInfo( p_vout, p_pic );
1087                     RenderInfo( p_vout );
1088                 }
1089                 if( p_subpic )
1090                 {
1091                     RenderSubPicture( p_vout, p_subpic );
1092                 }
1093             }
1094
1095             /* Render interface and subpicture */
1096             if( b_display && p_vout->b_interface && p_vout->b_need_render )
1097             {
1098                 RenderInterface( p_vout );
1099             }
1100
1101         }
1102         else if( p_vout->b_active && p_vout->b_need_render
1103                   && p_vout->init_display_date == 0)
1104         {
1105             /* Idle or interface screen alone */
1106
1107             if( p_vout->b_interface && 0 /* && XXX?? intf_change */ )
1108             {
1109                 /* Interface has changed, so a new rendering is required - force
1110                  * it by setting last idle date to 0 */
1111                 p_vout->last_idle_date = 0;
1112             }
1113
1114             /* Render idle screen and update idle date, then render interface if
1115              * required */
1116             b_display = RenderIdle( p_vout );
1117             if( b_display )
1118             {
1119                 p_vout->last_idle_date = current_date;
1120                 if( p_vout->b_interface )
1121                 {
1122                     RenderInterface( p_vout );
1123                 }
1124             }
1125
1126         }
1127         else
1128         {
1129             b_display = 0;
1130         }
1131
1132
1133         /*
1134          * Check for the current time and
1135          * display splash screen if everything is on time
1136          */
1137         if( p_vout->init_display_date > 0 && p_vout->b_need_render )
1138         {
1139             if( p_vout->b_active &&
1140                     mdate()-p_vout->init_display_date < 5000000)
1141             {
1142                 /* there is something to display ! */
1143                     b_display = 1;
1144                     RenderSplash( p_vout );
1145
1146             } else {
1147                 /* no splash screen ! */
1148                 p_vout->init_display_date=0;
1149             }
1150         }
1151
1152
1153         /*
1154          * Sleep, wake up and display rendered picture
1155          */
1156
1157         if( display_date != 0 )
1158         {
1159             /* Store render time using Bresenham algorithm */
1160             p_vout->render_time += mdate() - current_date;
1161             p_vout->render_time >>= 1;
1162         }
1163
1164         /* Give back change lock */
1165         vlc_mutex_unlock( &p_vout->change_lock );
1166
1167         /* Sleep a while or until a given date */
1168         if( display_date != 0 )
1169         {
1170             mwait( display_date - VOUT_MWAIT_TOLERANCE );
1171         }
1172         else
1173         {
1174             msleep( VOUT_IDLE_SLEEP );
1175         }
1176
1177         /* On awakening, take back lock and send immediately picture to display,
1178          * then swap buffers */
1179         vlc_mutex_lock( &p_vout->change_lock );
1180 #ifdef DEBUG_VOUT
1181         intf_DbgMsg( "picture %p, subpicture %p in buffer %d, display=%d", p_pic, p_subpic,
1182                      p_vout->i_buffer_index, b_display /* && !(p_vout->i_changes & VOUT_NODISPLAY_CHANGE) */ );
1183 #endif
1184         if( b_display /* && !(p_vout->i_changes & VOUT_NODISPLAY_CHANGE) */ )
1185         {
1186             p_vout->p_sys_display( p_vout );
1187 #ifndef SYS_BEOS
1188             p_vout->i_buffer_index = ++p_vout->i_buffer_index & 1;
1189 #endif
1190         }
1191
1192         if( p_pic )
1193         {
1194             /* Remove picture from heap */
1195             vlc_mutex_lock( &p_vout->picture_lock );
1196             if( p_pic->i_refcount )
1197             {
1198                 p_pic->i_status = DISPLAYED_PICTURE;
1199             }
1200             else
1201             {
1202                 p_pic->i_status = DESTROYED_PICTURE;
1203                 p_vout->i_pictures--;
1204             }
1205             vlc_mutex_unlock( &p_vout->picture_lock );
1206         }
1207
1208
1209         /*
1210          * Check events and manage thread
1211          */
1212         if( p_vout->p_sys_manage( p_vout ) | Manage( p_vout ) )
1213         {
1214             /* A fatal error occured, and the thread must terminate immediately,
1215              * without displaying anything - setting b_error to 1 cause the
1216              * immediate end of the main while() loop. */
1217             p_vout->b_error = 1;
1218         }
1219     }
1220
1221     /*
1222      * Error loop - wait until the thread destruction is requested
1223      */
1224     if( p_vout->b_error )
1225     {
1226         ErrorThread( p_vout );
1227     }
1228
1229     /* End of thread */
1230     EndThread( p_vout );
1231     DestroyThread( p_vout, THREAD_OVER );
1232     intf_DbgMsg( "thread end" );
1233 }
1234
1235 /*****************************************************************************
1236  * ErrorThread: RunThread() error loop
1237  *****************************************************************************
1238  * This function is called when an error occured during thread main's loop. The
1239  * thread can still receive feed, but must be ready to terminate as soon as
1240  * possible.
1241  *****************************************************************************/
1242 static void ErrorThread( vout_thread_t *p_vout )
1243 {
1244     /* Wait until a `die' order */
1245     while( !p_vout->b_die )
1246     {
1247         /* Sleep a while */
1248         msleep( VOUT_IDLE_SLEEP );
1249     }
1250 }
1251
1252 /*****************************************************************************
1253  * EndThread: thread destruction
1254  *****************************************************************************
1255  * This function is called when the thread ends after a sucessful
1256  * initialization. It frees all ressources allocated by InitThread.
1257  *****************************************************************************/
1258 static void EndThread( vout_thread_t *p_vout )
1259 {
1260     int     i_index;                                        /* index in heap */
1261
1262     /* Store status */
1263     *p_vout->pi_status = THREAD_END;
1264
1265 #ifdef STATS
1266     {
1267         struct tms cpu_usage;
1268         times( &cpu_usage );
1269
1270         intf_Msg("vout stats: cpu usage (user: %d, system: %d)",
1271                  cpu_usage.tms_utime, cpu_usage.tms_stime);
1272     }
1273 #endif
1274
1275     /* Destroy all remaining pictures and subpictures */
1276     for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++ )
1277     {
1278         if( p_vout->p_picture[i_index].i_status != FREE_PICTURE )
1279         {
1280             free( p_vout->p_picture[i_index].p_data );
1281         }
1282     }
1283     for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
1284     {
1285         if( p_vout->p_subpicture[i_index].i_status != FREE_SUBPICTURE )
1286         {
1287             free( p_vout->p_subpicture[i_index].p_data );
1288         }
1289     }
1290
1291     /* Destroy translation tables */
1292     vout_EndYUV( p_vout );
1293     p_vout->p_sys_end( p_vout );
1294 }
1295
1296 /*****************************************************************************
1297  * DestroyThread: thread destruction
1298  *****************************************************************************
1299  * This function is called when the thread ends. It frees all ressources
1300  * allocated by CreateThread. Status is available at this stage.
1301  *****************************************************************************/
1302 static void DestroyThread( vout_thread_t *p_vout, int i_status )
1303 {
1304     int *pi_status;                                         /* status adress */
1305
1306     /* Store status adress */
1307     pi_status = p_vout->pi_status;
1308
1309     /* Destroy thread structures allocated by Create and InitThread */
1310     vout_UnloadFont( p_vout->p_default_font );
1311     vout_UnloadFont( p_vout->p_large_font );
1312     p_vout->p_sys_destroy( p_vout );
1313
1314     /* Free structure */
1315     free( p_vout );
1316     *pi_status = i_status;
1317 }
1318
1319 /*****************************************************************************
1320  * Print: print simple text on a picture
1321  *****************************************************************************
1322  * This function will print a simple text on the picture. It is designed to
1323  * print debugging or general information.
1324  *****************************************************************************/
1325 void Print( vout_thread_t *p_vout, int i_x, int i_y, int i_h_align, int i_v_align, unsigned char *psz_text )
1326 {
1327     int                 i_text_height;                  /* total text height */
1328     int                 i_text_width;                    /* total text width */
1329
1330     /* Update upper left coordinates according to alignment */
1331     vout_TextSize( p_vout->p_default_font, 0, psz_text, &i_text_width, &i_text_height );
1332     if( !Align( p_vout, &i_x, &i_y, i_text_width, i_text_height, i_h_align, i_v_align ) )
1333     {
1334         /* Set area and print text */
1335         SetBufferArea( p_vout, i_x, i_y, i_text_width, i_text_height );
1336         vout_Print( p_vout->p_default_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1337                     i_y * p_vout->i_bytes_per_line + i_x * p_vout->i_bytes_per_pixel,
1338                     p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1339                     p_vout->i_white_pixel, 0, 0,
1340                     0, psz_text, 100 );
1341     }
1342 }
1343
1344 /*****************************************************************************
1345  * SetBufferArea: activate an area in current buffer
1346  *****************************************************************************
1347  * This function is called when something is rendered on the current buffer.
1348  * It set the area as active and prepare it to be cleared on next rendering.
1349  * Pay attention to the fact that in this functions, i_h is in fact the end y
1350  * coordinate of the new area.
1351  *****************************************************************************/
1352 static void SetBufferArea( vout_thread_t *p_vout, int i_x, int i_y, int i_w, int i_h )
1353 {
1354     vout_buffer_t *     p_buffer;                          /* current buffer */
1355     int                 i_area_begin, i_area_end; /* area vertical extension */
1356     int                 i_area, i_area_copy;                   /* area index */
1357     int                 i_area_shift;            /* shift distance for areas */
1358
1359     /* Choose buffer and modify h to end of area position */
1360     p_buffer =  &p_vout->p_buffer[ p_vout->i_buffer_index ];
1361     i_h +=      i_y - 1;
1362
1363     /*
1364      * Remove part of the area which is inside the picture - this is done
1365      * by calling again SetBufferArea with the correct areas dimensions.
1366      */
1367     if( (i_x >= p_buffer->i_pic_x) && (i_x + i_w <= p_buffer->i_pic_x + p_buffer->i_pic_width) )
1368     {
1369         i_area_begin =  p_buffer->i_pic_y;
1370         i_area_end =    i_area_begin + p_buffer->i_pic_height - 1;
1371
1372         if( ((i_y >= i_area_begin) && (i_y <= i_area_end)) ||
1373             ((i_h >= i_area_begin) && (i_h <= i_area_end)) ||
1374             ((i_y <  i_area_begin) && (i_h > i_area_end)) )
1375         {
1376             /* Keep the stripe above the picture, if any */
1377             if( i_y < i_area_begin )
1378             {
1379                 SetBufferArea( p_vout, i_x, i_y, i_w, i_area_begin - i_y );
1380             }
1381             /* Keep the stripe below the picture, if any */
1382             if( i_h > i_area_end )
1383             {
1384                 SetBufferArea( p_vout, i_x, i_area_end, i_w, i_h - i_area_end );
1385             }
1386             return;
1387         }
1388     }
1389
1390     /* Skip some extensions until interesting areas */
1391     for( i_area = 0;
1392          (i_area < p_buffer->i_areas) &&
1393              (p_buffer->pi_area_end[i_area] + 1 <= i_y);
1394          i_area++ )
1395     {
1396         ;
1397     }
1398
1399     if( i_area == p_buffer->i_areas )
1400     {
1401         /* New area is below all existing ones: just add it at the end of the
1402          * array, if possible - otherwise, append it to the last one */
1403         if( i_area < VOUT_MAX_AREAS )
1404         {
1405             p_buffer->pi_area_begin[i_area] = i_y;
1406             p_buffer->pi_area_end[i_area] = i_h;
1407             p_buffer->i_areas++;
1408         }
1409         else
1410         {
1411 #ifdef DEBUG_VOUT
1412             intf_DbgMsg("area overflow");
1413 #endif
1414             p_buffer->pi_area_end[VOUT_MAX_AREAS - 1] = i_h;
1415         }
1416     }
1417     else
1418     {
1419         i_area_begin =  p_buffer->pi_area_begin[i_area];
1420         i_area_end =    p_buffer->pi_area_end[i_area];
1421
1422         if( i_y < i_area_begin )
1423         {
1424             if( i_h >= i_area_begin - 1 )
1425             {
1426                 /* Extend area above */
1427                 p_buffer->pi_area_begin[i_area] = i_y;
1428             }
1429             else
1430             {
1431                 /* Create a new area above : merge last area if overflow, then
1432                  * move all old areas down */
1433                 if( p_buffer->i_areas == VOUT_MAX_AREAS )
1434                 {
1435 #ifdef DEBUG_VOUT
1436                     intf_DbgMsg("areas overflow");
1437 #endif
1438                     p_buffer->pi_area_end[VOUT_MAX_AREAS - 2] = p_buffer->pi_area_end[VOUT_MAX_AREAS - 1];
1439                 }
1440                 else
1441                 {
1442                     p_buffer->i_areas++;
1443                 }
1444                 for( i_area_copy = p_buffer->i_areas - 1; i_area_copy > i_area; i_area_copy-- )
1445                 {
1446                     p_buffer->pi_area_begin[i_area_copy] = p_buffer->pi_area_begin[i_area_copy - 1];
1447                     p_buffer->pi_area_end[i_area_copy] =   p_buffer->pi_area_end[i_area_copy - 1];
1448                 }
1449                 p_buffer->pi_area_begin[i_area] = i_y;
1450                 p_buffer->pi_area_end[i_area] = i_h;
1451                 return;
1452             }
1453         }
1454         if( i_h > i_area_end )
1455         {
1456             /* Find further areas which can be merged with the new one */
1457             for( i_area_copy = i_area + 1;
1458                  (i_area_copy < p_buffer->i_areas) &&
1459                      (p_buffer->pi_area_begin[i_area] <= i_h);
1460                  i_area_copy++ )
1461             {
1462                 ;
1463             }
1464             i_area_copy--;
1465
1466             if( i_area_copy != i_area )
1467             {
1468                 /* Merge with last possible areas */
1469                 p_buffer->pi_area_end[i_area] = MAX( i_h, p_buffer->pi_area_end[i_area_copy] );
1470
1471                 /* Shift lower areas upward */
1472                 i_area_shift = i_area_copy - i_area;
1473                 p_buffer->i_areas -= i_area_shift;
1474                 for( i_area_copy = i_area + 1; i_area_copy < p_buffer->i_areas; i_area_copy++ )
1475                 {
1476                     p_buffer->pi_area_begin[i_area_copy] = p_buffer->pi_area_begin[i_area_copy + i_area_shift];
1477                     p_buffer->pi_area_end[i_area_copy] =   p_buffer->pi_area_end[i_area_copy + i_area_shift];
1478                 }
1479             }
1480             else
1481             {
1482                 /* Extend area below */
1483                 p_buffer->pi_area_end[i_area] = i_h;
1484             }
1485         }
1486     }
1487 }
1488
1489 /*****************************************************************************
1490  * SetBufferPicture: clear buffer and set picture area
1491  *****************************************************************************
1492  * This function is called before any rendering. It clears the current
1493  * rendering buffer and set the new picture area. If the picture pointer is
1494  * NULL, then no picture area is defined. Floating operations are avoided since
1495  * some MMX calculations may follow.
1496  *****************************************************************************/
1497 static void SetBufferPicture( vout_thread_t *p_vout, picture_t *p_pic )
1498 {
1499     vout_buffer_t *     p_buffer;                          /* current buffer */
1500     int                 i_pic_x, i_pic_y;                /* picture position */
1501     int                 i_pic_width, i_pic_height;     /* picture dimensions */
1502     int                 i_old_pic_y, i_old_pic_height;   /* old picture area */
1503     int                 i_vout_width, i_vout_height;   /* display dimensions */
1504     int                 i_area;                                /* area index */
1505     int                 i_data_index;                     /* area data index */
1506     int                 i_data_size;   /* area data size, in 256 bytes blocs */
1507     u64 *               p_data;                   /* area data, for clearing */
1508     byte_t *            p_data8;           /* area data, for clearing (slow) */
1509
1510     /* Choose buffer and set display dimensions */
1511     p_buffer =          &p_vout->p_buffer[ p_vout->i_buffer_index ];
1512     i_vout_width =      p_vout->i_width;
1513     i_vout_height =     p_vout->i_height;
1514
1515     /*
1516      * Computes new picture size
1517      */
1518     if( p_pic != NULL )
1519     {
1520         /* Try horizontal scaling first - width must be a mutiple of 16 */
1521         i_pic_width = (( p_vout->b_scale || (p_pic->i_width > i_vout_width)) ?
1522                        i_vout_width : p_pic->i_width) & ~0xf;
1523         switch( p_pic->i_aspect_ratio )
1524         {
1525         case AR_3_4_PICTURE:
1526             i_pic_height = i_pic_width * 3 / 4;
1527             break;
1528         case AR_16_9_PICTURE:
1529             i_pic_height = i_pic_width * 9 / 16;
1530             break;
1531         case AR_221_1_PICTURE:
1532             i_pic_height = i_pic_width * 100 / 221;
1533             break;
1534         case AR_SQUARE_PICTURE:
1535         default:
1536             i_pic_height = p_pic->i_height * i_pic_width / p_pic->i_width;
1537             break;
1538         }
1539
1540         /* If picture dimensions using horizontal scaling are too large, use
1541          * vertical scaling. Since width must be a multiple of 16, height is
1542          * adjusted again after. */
1543         if( i_pic_height > i_vout_height )
1544         {
1545             i_pic_height = ( p_vout->b_scale || (p_pic->i_height > i_vout_height)) ?
1546                 i_vout_height : p_pic->i_height;
1547             switch( p_pic->i_aspect_ratio )
1548             {
1549             case AR_3_4_PICTURE:
1550                 i_pic_width = (i_pic_height * 4 / 3) & ~0xf;
1551                 i_pic_height = i_pic_width * 3 / 4;
1552                 break;
1553             case AR_16_9_PICTURE:
1554                 i_pic_width = (i_pic_height * 16 / 9) & ~0xf;
1555                 i_pic_height = i_pic_width * 9 / 16;
1556                 break;
1557             case AR_221_1_PICTURE:
1558                 i_pic_width = (i_pic_height * 221 / 100) & ~0xf;
1559                 i_pic_height = i_pic_width * 100 / 221;
1560                 break;
1561             case AR_SQUARE_PICTURE:
1562             default:
1563                 i_pic_width = (p_pic->i_width * i_pic_height / p_pic->i_height) & ~0xf;
1564                 i_pic_height = p_pic->i_height * i_pic_width / p_pic->i_width;
1565                 break;
1566             }
1567         }
1568
1569         /* Set picture position */
1570         i_pic_x = (p_vout->i_width - i_pic_width) / 2;
1571         i_pic_y = (p_vout->i_height - i_pic_height) / 2;
1572
1573     }
1574     else
1575     {
1576         /* No picture: size is 0 */
1577         i_pic_x =       0;
1578         i_pic_y =       0;
1579         i_pic_width =   0;
1580         i_pic_height =  0;
1581     }
1582
1583     /*
1584      * Set new picture size - if it is smaller than the previous one, clear
1585      * around it. Since picture are centered, only their size is tested.
1586      */
1587     if( (p_buffer->i_pic_width > i_pic_width) || (p_buffer->i_pic_height > i_pic_height) )
1588     {
1589         i_old_pic_y =            p_buffer->i_pic_y;
1590         i_old_pic_height =       p_buffer->i_pic_height;
1591         p_buffer->i_pic_x =      i_pic_x;
1592         p_buffer->i_pic_y =      i_pic_y;
1593         p_buffer->i_pic_width =  i_pic_width;
1594         p_buffer->i_pic_height = i_pic_height;
1595         SetBufferArea( p_vout, 0, i_old_pic_y, p_vout->i_width, i_old_pic_height );
1596     }
1597     else
1598     {
1599         p_buffer->i_pic_x =      i_pic_x;
1600         p_buffer->i_pic_y =      i_pic_y;
1601         p_buffer->i_pic_width =  i_pic_width;
1602         p_buffer->i_pic_height = i_pic_height;
1603     }
1604
1605     /*
1606      * Clear areas
1607      */
1608     for( i_area = 0; i_area < p_buffer->i_areas; i_area++ )
1609     {
1610 #ifdef DEBUG_VOUT
1611         intf_DbgMsg("clearing picture %p area in buffer %d: %d-%d", p_pic,
1612                     p_vout->i_buffer_index, p_buffer->pi_area_begin[i_area], p_buffer->pi_area_end[i_area] );
1613 #endif
1614         i_data_size = (p_buffer->pi_area_end[i_area] - p_buffer->pi_area_begin[i_area] + 1) * p_vout->i_bytes_per_line;
1615         p_data = (u64*) (p_buffer->p_data + p_vout->i_bytes_per_line * p_buffer->pi_area_begin[i_area]);
1616         for( i_data_index = i_data_size / 256; i_data_index-- ; )
1617         {
1618             /* Clear 256 bytes block */
1619             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1620             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1621             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1622             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1623             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1624             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1625             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1626             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1627         }
1628         for( i_data_index = (i_data_size % 256) / 16; i_data_index--; )
1629         {
1630             /* Clear remaining 16 bytes blocks */
1631             *p_data++ = 0;  *p_data++ = 0;
1632         }
1633         p_data8 = (byte_t *)p_data;
1634         for( i_data_index = i_data_size % 16; i_data_index--; )
1635         {
1636             /* Clear remaining bytes */
1637             *p_data8++ = 0;
1638         }
1639     }
1640
1641     /*
1642      * Clear areas array
1643      */
1644     p_buffer->i_areas = 0;
1645 }
1646
1647 /*****************************************************************************
1648  * RenderPicture: render a picture
1649  *****************************************************************************
1650  * This function converts a picture from a video heap to a pixel-encoded image
1651  * and copies it to the current rendering buffer. No lock is required, since
1652  * the * rendered picture has been determined as existant, and will only be
1653  * destroyed by the vout thread later.
1654  *****************************************************************************/
1655 static void RenderPicture( vout_thread_t *p_vout, picture_t *p_pic )
1656 {
1657 #ifdef DEBUG_VOUT
1658     char                psz_date[MSTRTIME_MAX_SIZE];         /* picture date */
1659     mtime_t             render_time;               /* picture rendering time */
1660 #endif
1661     vout_buffer_t *     p_buffer;                        /* rendering buffer */
1662     byte_t *            p_pic_data;                /* convertion destination */
1663
1664     /* Get and set rendering information */
1665     p_buffer =          &p_vout->p_buffer[ p_vout->i_buffer_index ];
1666     p_pic_data =        p_buffer->p_data +
1667                         p_buffer->i_pic_x * p_vout->i_bytes_per_pixel +
1668                         p_buffer->i_pic_y * p_vout->i_bytes_per_line;
1669 #ifdef DEBUG_VOUT
1670     render_time = mdate();
1671 #endif
1672
1673
1674
1675     /*
1676      * Choose appropriate rendering function and render picture
1677      */
1678     switch( p_pic->i_type )
1679     {
1680     case YUV_420_PICTURE:
1681         p_vout->yuv.p_Convert420( p_vout, p_pic_data,
1682                                   p_pic->p_y, p_pic->p_u, p_pic->p_v,
1683                                   p_pic->i_width, p_pic->i_height,
1684                                   p_buffer->i_pic_width, p_buffer->i_pic_height,
1685                                   p_vout->i_bytes_per_line / p_vout->i_bytes_per_pixel,
1686                                   p_pic->i_matrix_coefficients );
1687         break;
1688     case YUV_422_PICTURE:
1689         p_vout->yuv.p_Convert422( p_vout, p_pic_data,
1690                                   p_pic->p_y, p_pic->p_u, p_pic->p_v,
1691                                   p_pic->i_width, p_pic->i_height,
1692                                   p_buffer->i_pic_width, p_buffer->i_pic_height,
1693                                   p_vout->i_bytes_per_line / p_vout->i_bytes_per_pixel,
1694                                   p_pic->i_matrix_coefficients );
1695         break;
1696     case YUV_444_PICTURE:
1697         p_vout->yuv.p_Convert444( p_vout, p_pic_data,
1698                                   p_pic->p_y, p_pic->p_u, p_pic->p_v,
1699                                   p_pic->i_width, p_pic->i_height,
1700                                   p_buffer->i_pic_width, p_buffer->i_pic_height,
1701                                   p_vout->i_bytes_per_line / p_vout->i_bytes_per_pixel,
1702                                   p_pic->i_matrix_coefficients );
1703         break;
1704 #ifdef DEBUG
1705     default:
1706         intf_DbgMsg("error: unknown picture type %d", p_pic->i_type );
1707         break;
1708 #endif
1709     }
1710
1711 #ifdef DEBUG_VOUT
1712     /* Print picture date and rendering time */
1713     intf_DbgMsg("picture %p rendered in buffer %d (%ld us), display date: %s", p_pic,
1714                 p_vout->i_buffer_index, (long) (mdate() - render_time),
1715                 mstrtime( psz_date, p_pic->date ));
1716 #endif
1717 }
1718
1719 /*****************************************************************************
1720  * RenderPictureInfo: print additionnal information on a picture
1721  *****************************************************************************
1722  * This function will print information such as fps and other picture
1723  * dependant information.
1724  *****************************************************************************/
1725 static void RenderPictureInfo( vout_thread_t *p_vout, picture_t *p_pic )
1726 {
1727     char        psz_buffer[256];                            /* string buffer */
1728
1729     /*
1730      * Print FPS rate in upper right corner
1731      */
1732     if( p_vout->c_fps_samples > VOUT_FPS_SAMPLES )
1733     {
1734         long i_fps = VOUT_FPS_SAMPLES * 1000000 * 10 /
1735                            ( p_vout->p_fps_sample[ (p_vout->c_fps_samples - 1)
1736                                                    % VOUT_FPS_SAMPLES ] -
1737                              p_vout->p_fps_sample[ p_vout->c_fps_samples
1738                                                    % VOUT_FPS_SAMPLES ] );
1739         sprintf( psz_buffer, "%li.%i fps", i_fps / 10, (int)i_fps % 10 );
1740         Print( p_vout, 0, 0, RIGHT_RALIGN, TOP_RALIGN, psz_buffer );
1741     }
1742
1743     /*
1744      * Print frames count and loop time in upper left corner
1745      */
1746     sprintf( psz_buffer, "%ld frames, render: %ldus",
1747              (long) p_vout->c_fps_samples, (long) p_vout->render_time );
1748     Print( p_vout, 0, 0, LEFT_RALIGN, TOP_RALIGN, psz_buffer );
1749
1750 #ifdef STATS
1751     /*
1752      * Print picture information in lower right corner
1753      */
1754     sprintf( psz_buffer, "%s picture %dx%d (%dx%d%+d%+d %s) -> %dx%d+%d+%d",
1755              (p_pic->i_type == YUV_420_PICTURE) ? "4:2:0" :
1756              ((p_pic->i_type == YUV_422_PICTURE) ? "4:2:2" :
1757               ((p_pic->i_type == YUV_444_PICTURE) ? "4:4:4" : "ukn-type")),
1758              p_pic->i_width, p_pic->i_height,
1759              p_pic->i_display_width, p_pic->i_display_height,
1760              p_pic->i_display_horizontal_offset, p_pic->i_display_vertical_offset,
1761              (p_pic->i_aspect_ratio == AR_SQUARE_PICTURE) ? "sq" :
1762              ((p_pic->i_aspect_ratio == AR_3_4_PICTURE) ? "4:3" :
1763               ((p_pic->i_aspect_ratio == AR_16_9_PICTURE) ? "16:9" :
1764                ((p_pic->i_aspect_ratio == AR_221_1_PICTURE) ? "2.21:1" : "ukn-ar" ))),
1765              p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_width,
1766              p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_height,
1767              p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_x,
1768              p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_y );
1769     Print( p_vout, 0, 0, RIGHT_RALIGN, BOTTOM_RALIGN, psz_buffer );
1770 #endif
1771 }
1772
1773 /*****************************************************************************
1774  * RenderSplash: render splash picture
1775  *****************************************************************************
1776  * This function will print something on the screen. It will return 0 if
1777  * nothing has been rendered, or 1 if something has been changed on the screen.
1778  * Note that if you absolutely want something to be printed, you will have
1779  * to force it by setting the last idle date to 0.
1780  * Unlike other rendering functions, this one calls the SetBufferPicture
1781  * function when needed.
1782  *****************************************************************************/
1783 int RenderSplash( vout_thread_t *p_vout )
1784 {
1785     int         i_x = 0, i_y = 0;                           /* text position */
1786     int         i_width, i_height;                              /* text size */
1787     char *psz_text =    "VideoLAN Client (" VERSION ")";  /* text to display */
1788
1789     memset( p_vout->p_buffer[ p_vout->i_buffer_index ].p_data,
1790                   p_vout->i_bytes_per_line * p_vout->i_height, 12);
1791
1792  //   SetBufferPicture( p_vout, NULL );
1793     vout_TextSize( p_vout->p_large_font, WIDE_TEXT | OUTLINED_TEXT, psz_text,
1794                    &i_width, &i_height );
1795     if( !Align( p_vout, &i_x, &i_y, i_width, i_height, CENTER_RALIGN, CENTER_RALIGN ) )
1796     {
1797         vout_Print( p_vout->p_large_font,
1798                     p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1799                     i_x * p_vout->i_bytes_per_pixel + (i_y - 16 ) * p_vout->i_bytes_per_line,
1800                     p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1801                     p_vout->i_white_pixel, p_vout->i_gray_pixel, 0,
1802                     WIDE_TEXT | OUTLINED_TEXT, psz_text, 100);
1803         SetBufferArea( p_vout, i_x, i_y, i_width, i_height);
1804     }
1805     return( 1 );
1806 }
1807
1808
1809 /*****************************************************************************
1810  * RenderIdle: render idle picture
1811  *****************************************************************************
1812  * This function will print something on the screen. It will return 0 if
1813  * nothing has been rendered, or 1 if something has been changed on the screen.
1814  * Note that if you absolutely want something to be printed, you will have
1815  * to force it by setting the last idle date to 0.
1816  * Unlike other rendering functions, this one calls the SetBufferPicture
1817  * function when needed.
1818  *****************************************************************************/
1819 int RenderIdle( vout_thread_t *p_vout )
1820 {
1821     int         i_x = 0, i_y = 0;                           /* text position */
1822     int         i_width, i_height;                              /* text size */
1823     mtime_t     current_date;                                /* current date */
1824     int         i_amount = 0;                             /*  amount to draw */
1825     char *psz_text =    "Waiting for stream";            /* text to display */
1826     char *psz_wtext =   "[................]";
1827
1828
1829     memset( p_vout->p_buffer[ p_vout->i_buffer_index ].p_data,
1830                     p_vout->i_bytes_per_line * p_vout->i_height, 12);
1831
1832
1833     current_date = mdate();
1834     if( (current_date - p_vout->last_display_date) > VOUT_IDLE_DELAY
1835 //            && (current_date - p_vout->last_idle_date) > VOUT_IDLE_DELAY
1836     )
1837     {
1838         SetBufferPicture( p_vout, NULL );
1839         vout_TextSize( p_vout->p_large_font, WIDE_TEXT | OUTLINED_TEXT, psz_text,
1840                        &i_width, &i_height );
1841         if( !Align( p_vout, &i_x, &i_y, i_width, i_height * 2, CENTER_RALIGN, CENTER_RALIGN ) )
1842         {
1843             i_amount = (int) ((current_date - p_vout->last_display_date ) / 5000LL);
1844             vout_Print( p_vout->p_large_font,
1845                         p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1846                         i_x * p_vout->i_bytes_per_pixel + i_y * p_vout->i_bytes_per_line,
1847                         p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1848                         p_vout->i_white_pixel, p_vout->i_gray_pixel, 0,
1849                         WIDE_TEXT | OUTLINED_TEXT, psz_text,  (i_amount / 3 ) %110);
1850
1851             vout_Print( p_vout->p_large_font,
1852                     p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1853                     i_x * p_vout->i_bytes_per_pixel + (i_y + 16) * p_vout->i_bytes_per_line,
1854                     p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1855                     p_vout->i_white_pixel, p_vout->i_gray_pixel, 0,
1856                     WIDE_TEXT | OUTLINED_TEXT, psz_wtext,  (i_amount/5)%110 );
1857
1858
1859             SetBufferArea( p_vout, i_x, i_y, i_width, i_height * 2 );
1860         }
1861         return( 1 );
1862     }
1863     return( 0 );
1864 }
1865
1866 /*****************************************************************************
1867  * RenderInfo: render additionnal information
1868  *****************************************************************************
1869  * This function renders information which do not depend on the current
1870  * picture rendered.
1871  *****************************************************************************/
1872 static void RenderInfo( vout_thread_t *p_vout )
1873 {
1874 #ifdef DEBUG
1875     char        psz_buffer[256];                            /* string buffer */
1876     int         i_ready_pic = 0;                           /* ready pictures */
1877     int         i_reserved_pic = 0;                     /* reserved pictures */
1878     int         i_picture;                                  /* picture index */
1879 #endif
1880
1881 #ifdef DEBUG
1882     /*
1883      * Print thread state in lower left corner
1884      */
1885     for( i_picture = 0; i_picture < VOUT_MAX_PICTURES; i_picture++ )
1886     {
1887         switch( p_vout->p_picture[i_picture].i_status )
1888         {
1889         case RESERVED_PICTURE:
1890         case RESERVED_DATED_PICTURE:
1891         case RESERVED_DISP_PICTURE:
1892             i_reserved_pic++;
1893             break;
1894         case READY_PICTURE:
1895             i_ready_pic++;
1896             break;
1897         }
1898     }
1899     sprintf( psz_buffer, "pic: %d (%d/%d)/%d",
1900              p_vout->i_pictures, i_reserved_pic, i_ready_pic, VOUT_MAX_PICTURES );
1901     Print( p_vout, 0, 0, LEFT_RALIGN, BOTTOM_RALIGN, psz_buffer );
1902 #endif
1903 }
1904
1905 /*****************************************************************************
1906  * RenderSubPicture: render a subpicture
1907  *****************************************************************************
1908  * This function renders a sub picture unit.
1909  *****************************************************************************/
1910 static void RenderSubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
1911 {
1912     p_vout_font_t       p_font;                                 /* text font */
1913     int                 i_width, i_height;          /* subpicture dimensions */
1914
1915     while( p_subpic != NULL )
1916     {
1917         switch( p_subpic->i_type )
1918         {
1919         case DVD_SUBPICTURE:                          /* DVD subpicture unit */
1920             /* test if the picture really has to be displayed */
1921             if( mdate() < p_subpic->begin_date )
1922             {
1923                 /* not yet, see you later */
1924                 break;
1925             }
1926             if( mdate() > p_subpic->end_date )
1927             {
1928                 /* too late, destroying the subpic */
1929                 vout_DestroySubPicture( p_vout, p_subpic );
1930                 break;
1931             }
1932             vout_RenderSPU( &p_vout->p_buffer[ p_vout->i_buffer_index ],
1933                             p_subpic, p_vout->i_bytes_per_pixel,
1934                             p_vout->i_bytes_per_line );
1935             break;
1936         case TEXT_SUBPICTURE:                            /* single line text */
1937             /* Select default font if not specified */
1938             p_font = p_subpic->type.text.p_font;
1939             if( p_font == NULL )
1940             {
1941                 p_font = p_vout->p_default_font;
1942             }
1943
1944             /* Compute text size (width and height fields are ignored)
1945              * and print it */
1946             vout_TextSize( p_font, p_subpic->type.text.i_style,
1947                            p_subpic->p_data, &i_width, &i_height );
1948             if( !Align( p_vout, &p_subpic->i_x, &p_subpic->i_y,
1949                         i_width, i_height, p_subpic->i_horizontal_align,
1950                         p_subpic->i_vertical_align ) )
1951             {
1952                 vout_Print( p_font,
1953                             p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1954                             p_subpic->i_x * p_vout->i_bytes_per_pixel +
1955                             p_subpic->i_y * p_vout->i_bytes_per_line,
1956                             p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1957                             p_subpic->type.text.i_char_color,
1958                             p_subpic->type.text.i_border_color,
1959                             p_subpic->type.text.i_bg_color,
1960                             p_subpic->type.text.i_style, p_subpic->p_data, 100 );
1961                 SetBufferArea( p_vout, p_subpic->i_x, p_subpic->i_y,
1962                                i_width, i_height );
1963             }
1964             break;
1965
1966 #ifdef DEBUG
1967         default:
1968             intf_DbgMsg( "error: unknown subpicture %p type %d",
1969                          p_subpic, p_subpic->i_type );
1970 #endif
1971         }
1972
1973         p_subpic = p_subpic->p_next;
1974     }
1975 }
1976
1977 /*****************************************************************************
1978  * RenderInterface: render the interface
1979  *****************************************************************************
1980  * This function renders the interface, if any.
1981  *****************************************************************************/
1982 static void RenderInterface( vout_thread_t *p_vout )
1983 {
1984     int         i_height, i_text_height;            /* total and text height */
1985     int         i_width_1, i_width_2;                          /* text width */
1986     int         i_byte;                                        /* byte index */
1987     const char *psz_text_1 = "[1-9] Channel   [i]nfo   [c]olor     [g/G]amma";
1988     const char *psz_text_2 = "[+/-] Volume    [m]ute   [s]caling   [Q]uit";
1989
1990     /* Get text size */
1991     vout_TextSize( p_vout->p_large_font, OUTLINED_TEXT, psz_text_1, &i_width_1, &i_height );
1992     vout_TextSize( p_vout->p_large_font, OUTLINED_TEXT, psz_text_2, &i_width_2, &i_text_height );
1993     i_height += i_text_height;
1994
1995     /* Render background */
1996     for( i_byte = (p_vout->i_height - i_height) * p_vout->i_bytes_per_line;
1997          i_byte < p_vout->i_height * p_vout->i_bytes_per_line;
1998          i_byte++ )
1999     {
2000         /* XXX?? noooo ! */
2001         p_vout->p_buffer[ p_vout->i_buffer_index ].p_data[ i_byte ] = p_vout->i_blue_pixel;
2002     }
2003
2004     /* Render text, if not larger than screen */
2005     if( i_width_1 < p_vout->i_width )
2006     {
2007         vout_Print( p_vout->p_large_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
2008                     (p_vout->i_height - i_height) * p_vout->i_bytes_per_line,
2009                     p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
2010                     p_vout->i_white_pixel, p_vout->i_black_pixel, 0,
2011                     OUTLINED_TEXT, psz_text_1, 100 );
2012     }
2013     if( i_width_2 < p_vout->i_width )
2014     {
2015         vout_Print( p_vout->p_large_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
2016                     (p_vout->i_height - i_height + i_text_height) * p_vout->i_bytes_per_line,
2017                     p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
2018                     p_vout->i_white_pixel, p_vout->i_black_pixel, 0,
2019                     OUTLINED_TEXT, psz_text_2, 100 );
2020     }
2021
2022     /* Activate modified area */
2023     SetBufferArea( p_vout, 0, p_vout->i_height - i_height, p_vout->i_width, i_height );
2024 }
2025
2026 /*****************************************************************************
2027  * Manage: manage thread
2028  *****************************************************************************
2029  * This function will handle changes in thread configuration.
2030  *****************************************************************************/
2031 static int Manage( vout_thread_t *p_vout )
2032 {
2033 #ifdef DEBUG_VOUT
2034     if( p_vout->i_changes )
2035     {
2036         intf_DbgMsg("changes: 0x%x (no display: 0x%x)", p_vout->i_changes,
2037                     0 /* p_vout->i_changes & VOUT_NODISPLAY_CHANGE */ );
2038     }
2039 #endif
2040
2041     /* On gamma or grayscale change, rebuild tables */
2042     if( p_vout->i_changes & (VOUT_GAMMA_CHANGE | VOUT_GRAYSCALE_CHANGE |
2043                              VOUT_YUV_CHANGE) )
2044     {
2045         if( vout_ResetYUV( p_vout ) )
2046         {
2047             intf_ErrMsg( "vout error: can't rebuild conversion tables" );
2048             return( 1 );
2049         }
2050     }
2051
2052     /* Clear changes flags which does not need management or have been
2053      * handled */
2054     p_vout->i_changes &= ~(VOUT_GAMMA_CHANGE | VOUT_GRAYSCALE_CHANGE |
2055                            VOUT_YUV_CHANGE   | VOUT_INFO_CHANGE |
2056                            VOUT_INTF_CHANGE  | VOUT_SCALE_CHANGE );
2057
2058     /* Detect unauthorized changes */
2059     if( p_vout->i_changes )
2060     {
2061         /* Some changes were not acknowledged by p_vout->p_sys_manage or this
2062          * function, it means they should not be authorized */
2063         intf_ErrMsg( "vout error: unauthorized changes in the vout thread" );
2064         return( 1 );
2065     }
2066
2067     return( 0 );
2068 }
2069
2070 /*****************************************************************************
2071  * Align: align a subpicture in the screen
2072  *****************************************************************************
2073  * This function is used for rendering text or subpictures. It returns non 0
2074  * it the final aera is not fully included in display area. Return coordinates
2075  * are absolute.
2076  *****************************************************************************/
2077 static int Align( vout_thread_t *p_vout, int *pi_x, int *pi_y,
2078                    int i_width, int i_height, int i_h_align, int i_v_align )
2079 {
2080     /* Align horizontally */
2081     switch( i_h_align )
2082     {
2083     case CENTER_ALIGN:
2084         *pi_x -= i_width / 2;
2085         break;
2086     case CENTER_RALIGN:
2087         *pi_x += (p_vout->i_width - i_width) / 2;
2088         break;
2089     case RIGHT_ALIGN:
2090         *pi_x -= i_width;
2091         break;
2092     case RIGHT_RALIGN:
2093         *pi_x += p_vout->i_width - i_width;
2094         break;
2095     }
2096
2097     /* Align vertically */
2098     switch( i_v_align )
2099     {
2100     case CENTER_ALIGN:
2101         *pi_y -= i_height / 2;
2102         break;
2103     case CENTER_RALIGN:
2104         *pi_y += (p_vout->i_height - i_height) / 2;
2105         break;
2106     case BOTTOM_ALIGN:
2107         *pi_y -= i_height;
2108         break;
2109     case BOTTOM_RALIGN:
2110         *pi_y += p_vout->i_height - i_height;
2111         break;
2112     case SUBTITLE_RALIGN:
2113         *pi_y += (p_vout->i_height + p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_y +
2114                   p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_height - i_height) / 2;
2115         break;
2116     }
2117
2118     /* Return non 0 if clipping failed */
2119     return( (*pi_x < 0) || (*pi_y < 0) ||
2120             (*pi_x + i_width > p_vout->i_width) || (*pi_y + i_height > p_vout->i_height) );
2121 }
2122
2123 /*****************************************************************************
2124  * SetPalette: sets an 8 bpp palette
2125  *****************************************************************************
2126  * This function is just a prototype that does nothing. Architectures that
2127  * support palette allocation should override it.
2128  *****************************************************************************/
2129 static void     SetPalette        ( p_vout_thread_t p_vout, u16 *red,
2130                                     u16 *green, u16 *blue, u16 *transp )
2131 {
2132     intf_ErrMsg( "vout error: method does not support palette changing" );
2133 }
2134