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 #include "vdec_idct.h"
  55 #include "video_decoder.h"
  56
  57 /*****************************************************************************
  58  * Local prototypes
  59  *****************************************************************************/
  60 static int      BinaryLog         ( u32 i );
  61 static void     MaskToShift       ( int *pi_left, int *pi_right, u32 i_mask );
  62 static int      InitThread        ( vout_thread_t *p_vout );
  63 static void     RunThread         ( vout_thread_t *p_vout );
  64 static void     ErrorThread       ( vout_thread_t *p_vout );
  65 static void     EndThread         ( vout_thread_t *p_vout );
  66 static void     DestroyThread     ( vout_thread_t *p_vout, int i_status );
  67 static void     Print             ( vout_thread_t *p_vout, int i_x, int i_y,
  68                                     int i_h_align, int i_v_align,
  69                                     unsigned char *psz_text );
  70 static void     SetBufferArea     ( vout_thread_t *p_vout, int i_x, int i_y,
  71                                     int i_w, int i_h );
  72 static void     SetBufferPicture  ( vout_thread_t *p_vout, picture_t *p_pic );
  73 static void     RenderPicture     ( vout_thread_t *p_vout, picture_t *p_pic );
  74 static void     RenderPictureInfo ( vout_thread_t *p_vout, picture_t *p_pic );
  75 static void     RenderSubPicture  ( vout_thread_t *p_vout,
  76                                     subpicture_t *p_subpic );
  77 static void     RenderInterface   ( vout_thread_t *p_vout );
  78 static int      RenderIdle        ( vout_thread_t *p_vout );
  79 static int      RenderSplash      ( vout_thread_t *p_vout );
  80 static void     RenderInfo        ( vout_thread_t *p_vout );
  81 static int      Manage            ( vout_thread_t *p_vout );
  82 static int      Align             ( vout_thread_t *p_vout, int *pi_x,
  83                                     int *pi_y, int i_width, int i_height,
  84                                     int i_h_align, int i_v_align );
  85 static void     SetPalette        ( p_vout_thread_t p_vout, u16 *red,
  86                                     u16 *green, u16 *blue, u16 *transp );
  87
  88 /*****************************************************************************
  89  * vout_CreateThread: creates a new video output thread
  90  *****************************************************************************
  91  * This function creates a new video output thread, and returns a pointer
  92  * to its description. On error, it returns NULL.
  93  * If pi_status is NULL, then the function will block until the thread is ready.
  94  * If not, it will be updated using one of the THREAD_* constants.
  95  *****************************************************************************/
  96 vout_thread_t * vout_CreateThread   ( char *psz_display, int i_root_window,
  97                           int i_width, int i_height, int *pi_status,
  98                           int i_method, void *p_data )
  99 {
 100     vout_thread_t * p_vout;                             /* thread descriptor */
 101     typedef void    ( vout_getplugin_t ) ( vout_thread_t * p_vout );
 102     int             i_status;                               /* thread status */
 103     int             i_index;               /* index for array initialization */
 104     int             i_best_index = 0, i_best_score = 0;
 105
 106     /* Allocate descriptor */
 107     intf_DbgMsg("\n");
 108     p_vout = (vout_thread_t *) malloc( sizeof(vout_thread_t) );
 109     if( p_vout == NULL )
 110     {
 111         intf_ErrMsg( "vout error: %s\n", strerror(ENOMEM) );
 112         return( NULL );
 113     }
 114
 115     p_vout->p_set_palette       = SetPalette;
 116
 117     /* Get a suitable video plugin */
 118     for( i_index = 0 ; i_index < p_main->p_bank->i_plugin_count ; i_index++ )
 119     {
 120         /* If there's a plugin in p_info ... */
 121         if( p_main->p_bank->p_info[ i_index ] != NULL )
 122         {
 123             /* ... and if this plugin provides the functions we want ... */
 124             if( p_main->p_bank->p_info[ i_index ]->vout_GetPlugin != NULL )
 125             {
 126                 /* ... and if this plugin has a good score ... */
 127                 if( p_main->p_bank->p_info[ i_index ]->i_score > i_best_score )
 128                 {
 129                     /* ... then take it */
 130                     i_best_score = p_main->p_bank->p_info[ i_index ]->i_score;
 131                     i_best_index = i_index;
 132                 }
 133             }
 134         }
 135     }
 136
 137     if( i_best_score == 0 )
 138     {
 139         free( p_vout );
 140         return( NULL );
 141     }
 142
 143     /* Get the plugin functions */
 144     ( (vout_getplugin_t *)
 145       p_main->p_bank->p_info[ i_best_index ]->vout_GetPlugin )( p_vout );
 146
 147     /* Initialize thread properties - thread id and locks will be initialized
 148      * later */
 149     p_vout->b_die               = 0;
 150     p_vout->b_error             = 0;
 151     p_vout->b_active            = 0;
 152     p_vout->pi_status           = (pi_status != NULL) ? pi_status : &i_status;
 153     *p_vout->pi_status          = THREAD_CREATE;
 154
 155     /* Initialize some fields used by the system-dependant method - these
 156      * fields will probably be modified by the method, and are only
 157      * preferences */
 158     p_vout->i_changes             = 0;
 159     p_vout->i_width               = i_width;
 160     p_vout->i_height              = i_height;
 161     p_vout->i_bytes_per_line      = i_width * 2;
 162     p_vout->i_screen_depth        = 15;
 163     p_vout->i_bytes_per_pixel     = 2;
 164     p_vout->f_gamma               = VOUT_GAMMA;
 165     p_vout->b_need_render         = 1;
 166
 167     p_vout->b_grayscale           = main_GetIntVariable( VOUT_GRAYSCALE_VAR,
 168                                                        VOUT_GRAYSCALE_DEFAULT );
 169     p_vout->vdec_DecodeMacroblock = vdec_DecodeMacroblockC;
 170     p_vout->b_info                = 0;
 171     p_vout->b_interface           = 0;
 172     p_vout->b_scale               = 1;
 173
 174     intf_DbgMsg( "wished configuration: %dx%d, %d/%d bpp (%d Bpl)\n",
 175                  p_vout->i_width, p_vout->i_height, p_vout->i_screen_depth,
 176                  p_vout->i_bytes_per_pixel * 8, p_vout->i_bytes_per_line );
 177
 178     /* Initialize idle screen */
 179     p_vout->last_display_date   = 0;
 180     p_vout->last_idle_date      = 0;
 181     p_vout->init_display_date   = mdate();
 182     p_vout->render_time         = 10000;
 183
 184     /* Initialize statistics fields */
 185     p_vout->c_fps_samples       = 0;
 186
 187     /* Initialize buffer index */
 188     p_vout->i_buffer_index      = 0;
 189
 190     /* Initialize pictures and subpictures - translation tables and functions
 191      * will be initialized later in InitThread */
 192     for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++)
 193     {
 194         p_vout->p_picture[i_index].i_type   =   EMPTY_PICTURE;
 195         p_vout->p_picture[i_index].i_status =   FREE_PICTURE;
 196     }
 197     for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++)
 198     {
 199         p_vout->p_subpicture[i_index].i_type  = EMPTY_SUBPICTURE;
 200         p_vout->p_subpicture[i_index].i_status= FREE_SUBPICTURE;
 201     }
 202     p_vout->i_pictures = 0;
 203
 204     /* Create and initialize system-dependant method - this function issues its
 205      * own error messages */
 206     if( p_vout->p_sys_create( p_vout, psz_display, i_root_window, p_data ) )
 207     {
 208         free( p_vout );
 209         return( NULL );
 210     }
 211     intf_DbgMsg( "actual configuration: %dx%d, %d/%d bpp (%d Bpl), "
 212                  "masks: 0x%x/0x%x/0x%x\n",
 213                  p_vout->i_width, p_vout->i_height, p_vout->i_screen_depth,
 214                  p_vout->i_bytes_per_pixel * 8, p_vout->i_bytes_per_line,
 215                  p_vout->i_red_mask, p_vout->i_green_mask,
 216                  p_vout->i_blue_mask );
 217
 218     /* Calculate shifts from system-updated masks */
 219     MaskToShift( &p_vout->i_red_lshift, &p_vout->i_red_rshift,
 220                  p_vout->i_red_mask );
 221     MaskToShift( &p_vout->i_green_lshift, &p_vout->i_green_rshift,
 222                  p_vout->i_green_mask );
 223     MaskToShift( &p_vout->i_blue_lshift, &p_vout->i_blue_rshift,
 224                  p_vout->i_blue_mask );
 225
 226     /* Set some useful colors */
 227     p_vout->i_white_pixel = RGB2PIXEL( p_vout, 255, 255, 255 );
 228     p_vout->i_black_pixel = RGB2PIXEL( p_vout, 0, 0, 0 );
 229     p_vout->i_gray_pixel  = RGB2PIXEL( p_vout, 128, 128, 128 );
 230     p_vout->i_blue_pixel  = RGB2PIXEL( p_vout, 0, 0, 50 );
 231
 232     /* Load fonts - fonts must be initialized after the system method since
 233      * they may be dependant on screen depth and other thread properties */
 234     p_vout->p_default_font = vout_LoadFont( DATA_PATH "/" VOUT_DEFAULT_FONT );
 235     if( p_vout->p_default_font == NULL )
 236     {
 237         p_vout->p_default_font = vout_LoadFont( "share/" VOUT_DEFAULT_FONT );
 238     }
 239     if( p_vout->p_default_font == NULL )
 240     {
 241         intf_ErrMsg( "vout error: could not load default font\n" );
 242         p_vout->p_sys_destroy( p_vout );
 243         free( p_vout );
 244         return( NULL );
 245     }
 246     p_vout->p_large_font = vout_LoadFont( DATA_PATH "/" VOUT_LARGE_FONT );
 247     if( p_vout->p_large_font == NULL )
 248     {
 249         p_vout->p_large_font = vout_LoadFont( "share/" VOUT_LARGE_FONT );
 250     }
 251     if( p_vout->p_large_font == NULL )
 252     {
 253         intf_ErrMsg( "vout error: could not load large font\n" );
 254         vout_UnloadFont( p_vout->p_default_font );
 255         p_vout->p_sys_destroy( p_vout );
 256         free( p_vout );
 257         return( NULL );
 258     }
 259
 260     /* Create thread and set locks */
 261     vlc_mutex_init( &p_vout->picture_lock );
 262     vlc_mutex_init( &p_vout->subpicture_lock );
 263     vlc_mutex_init( &p_vout->change_lock );
 264     vlc_mutex_lock( &p_vout->change_lock );
 265     if( vlc_thread_create( &p_vout->thread_id, "video output",
 266                            (void *) RunThread, (void *) p_vout) )
 267     {
 268         intf_ErrMsg("vout error: %s\n", strerror(ENOMEM));
 269         vout_UnloadFont( p_vout->p_default_font );
 270         vout_UnloadFont( p_vout->p_large_font );
 271         p_vout->p_sys_destroy( p_vout );
 272         free( p_vout );
 273         return( NULL );
 274     }
 275
 276     intf_Msg( "Video display initialized (%dx%d, %d/%d bpp)\n", p_vout->i_width,
 277               p_vout->i_height, p_vout->i_screen_depth,
 278               p_vout->i_bytes_per_pixel * 8 );
 279
 280     /* If status is NULL, wait until the thread is created */
 281     if( pi_status == NULL )
 282     {
 283         do
 284         {
 285             msleep( THREAD_SLEEP );
 286         }while( (i_status != THREAD_READY) && (i_status != THREAD_ERROR)
 287                 && (i_status != THREAD_FATAL) );
 288         if( i_status != THREAD_READY )
 289         {
 290             return( NULL );
 291         }
 292     }
 293     return( p_vout );
 294 }
 295
 296 /*****************************************************************************
 297  * vout_DestroyThread: destroys a previously created thread
 298  *****************************************************************************
 299  * Destroy a terminated thread.
 300  * The function will request a destruction of the specified thread. If pi_error
 301  * is NULL, it will return once the thread is destroyed. Else, it will be
 302  * update using one of the THREAD_* constants.
 303  *****************************************************************************/
 304 void vout_DestroyThread( vout_thread_t *p_vout, int *pi_status )
 305 {
 306     int     i_status;                                       /* thread status */
 307
 308     /* Set status */
 309     intf_DbgMsg("\n");
 310     p_vout->pi_status = (pi_status != NULL) ? pi_status : &i_status;
 311     *p_vout->pi_status = THREAD_DESTROY;
 312
 313     /* Request thread destruction */
 314     p_vout->b_die = 1;
 315
 316     /* If status is NULL, wait until thread has been destroyed */
 317     if( pi_status == NULL )
 318     {
 319         do
 320         {
 321             msleep( THREAD_SLEEP );
 322         }while( (i_status != THREAD_OVER) && (i_status != THREAD_ERROR)
 323                 && (i_status != THREAD_FATAL) );
 324     }
 325 }
 326
 327 /*****************************************************************************
 328  * vout_DisplaySubPicture: display a subpicture unit
 329  *****************************************************************************
 330  * Remove the reservation flag of an subpicture, which will cause it to be ready
 331  * for display. The picture does not need to be locked, since it is ignored by
 332  * the output thread if is reserved.
 333  *****************************************************************************/
 334 void  vout_DisplaySubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
 335 {
 336 #ifdef DEBUG_VOUT
 337     char        psz_begin_date[MSTRTIME_MAX_SIZE]; /* buffer for date string */
 338     char        psz_end_date[MSTRTIME_MAX_SIZE];   /* buffer for date string */
 339 #endif
 340
 341 #ifdef DEBUG
 342     /* Check if status is valid */
 343     if( p_subpic->i_status != RESERVED_SUBPICTURE )
 344     {
 345         intf_DbgMsg("error: subpicture %p has invalid status %d\n", p_subpic,
 346                     p_subpic->i_status );
 347     }
 348 #endif
 349
 350     /* Remove reservation flag */
 351     p_subpic->i_status = READY_SUBPICTURE;
 352
 353 #ifdef DEBUG_VOUT
 354     /* Send subpicture information */
 355     intf_DbgMsg("subpicture %p: type=%d, begin date=%s, end date=%s\n",
 356                 p_subpic, p_subpic->i_type,
 357                 mstrtime( psz_begin_date, p_subpic->begin_date ),
 358                 mstrtime( psz_end_date, p_subpic->end_date ) );
 359 #endif
 360 }
 361
 362 /*****************************************************************************
 363  * vout_CreateSubPicture: allocate a subpicture in the video output heap.
 364  *****************************************************************************
 365  * This function create a reserved subpicture in the video output heap.
 366  * A null pointer is returned if the function fails. This method provides an
 367  * already allocated zone of memory in the spu data fields. It needs locking
 368  * since several pictures can be created by several producers threads.
 369  *****************************************************************************/
 370 subpicture_t *vout_CreateSubPicture( vout_thread_t *p_vout, int i_type,
 371                                      int i_size )
 372 {
 373     int                 i_subpic;                        /* subpicture index */
 374     subpicture_t *      p_free_subpic = NULL;       /* first free subpicture */
 375     subpicture_t *      p_destroyed_subpic = NULL; /* first destroyed subpic */
 376
 377     /* Get lock */
 378     vlc_mutex_lock( &p_vout->subpicture_lock );
 379
 380     /*
 381      * Look for an empty place
 382      */
 383     for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
 384     {
 385         if( p_vout->p_subpicture[i_subpic].i_status == DESTROYED_SUBPICTURE )
 386         {
 387             /* Subpicture is marked for destruction, but is still allocated */
 388             if( (p_vout->p_subpicture[i_subpic].i_type  == i_type)   &&
 389                 (p_vout->p_subpicture[i_subpic].i_size  >= i_size) )
 390             {
 391                 /* Memory size do match or is smaller : memory will not be
 392                  * reallocated, and function can end immediately - this is
 393                  * the best possible case, since no memory allocation needs
 394                  * to be done */
 395                 p_vout->p_subpicture[i_subpic].i_status = RESERVED_SUBPICTURE;
 396 #ifdef DEBUG_VOUT
 397                 intf_DbgMsg("subpicture %p (in destroyed subpicture slot)\n",
 398                             &p_vout->p_subpicture[i_subpic] );
 399 #endif
 400                 vlc_mutex_unlock( &p_vout->subpicture_lock );
 401                 return( &p_vout->p_subpicture[i_subpic] );
 402             }
 403             else if( p_destroyed_subpic == NULL )
 404             {
 405                 /* Memory size do not match, but subpicture index will be kept in
 406                  * case no other place are left */
 407                 p_destroyed_subpic = &p_vout->p_subpicture[i_subpic];
 408             }
 409         }
 410         else if( (p_free_subpic == NULL) &&
 411                  (p_vout->p_subpicture[i_subpic].i_status == FREE_SUBPICTURE ))
 412         {
 413             /* Subpicture is empty and ready for allocation */
 414             p_free_subpic = &p_vout->p_subpicture[i_subpic];
 415         }
 416     }
 417
 418     /* If no free subpictures are available, use a destroyed subpicture */
 419     if( (p_free_subpic == NULL) && (p_destroyed_subpic != NULL ) )
 420     {
 421         /* No free subpicture or matching destroyed subpictures have been
 422          * found, but a destroyed subpicture is still avalaible */
 423         free( p_destroyed_subpic->p_data );
 424         p_free_subpic = p_destroyed_subpic;
 425     }
 426
 427     /*
 428      * Prepare subpicture
 429      */
 430     if( p_free_subpic != NULL )
 431     {
 432         /* Allocate memory */
 433         switch( i_type )
 434         {
 435         case TEXT_SUBPICTURE:                             /* text subpicture */
 436             p_free_subpic->p_data = malloc( i_size + 1 );
 437             break;
 438         case DVD_SUBPICTURE:                          /* DVD subpicture unit */
 439             p_free_subpic->p_data = malloc( i_size );
 440             break;
 441 #ifdef DEBUG
 442         default:
 443             intf_DbgMsg("error: unknown subpicture type %d\n", i_type );
 444             p_free_subpic->p_data   =  NULL;
 445             break;
 446 #endif
 447         }
 448
 449         if( p_free_subpic->p_data != NULL )
 450         {
 451             /* Copy subpicture information, set some default values */
 452             p_free_subpic->i_type                      = i_type;
 453             p_free_subpic->i_status                    = RESERVED_SUBPICTURE;
 454             p_free_subpic->i_size                      = i_size;
 455             p_free_subpic->i_x                         = 0;
 456             p_free_subpic->i_y                         = 0;
 457             p_free_subpic->i_width                     = 0;
 458             p_free_subpic->i_height                    = 0;
 459             p_free_subpic->i_horizontal_align          = CENTER_RALIGN;
 460             p_free_subpic->i_vertical_align            = CENTER_RALIGN;
 461         }
 462         else
 463         {
 464             /* Memory allocation failed : set subpicture as empty */
 465             p_free_subpic->i_type   =  EMPTY_SUBPICTURE;
 466             p_free_subpic->i_status =  FREE_SUBPICTURE;
 467             p_free_subpic =            NULL;
 468             intf_ErrMsg("spu warning: %s\n", strerror( ENOMEM ) );
 469         }
 470
 471 #ifdef DEBUG_VOUT
 472         intf_DbgMsg("subpicture %p (in free subpicture slot)\n", p_free_subpic );
 473 #endif
 474         vlc_mutex_unlock( &p_vout->subpicture_lock );
 475         return( p_free_subpic );
 476     }
 477
 478     /* No free or destroyed subpicture could be found */
 479     intf_DbgMsg( "warning: subpicture heap is full\n" );
 480     vlc_mutex_unlock( &p_vout->subpicture_lock );
 481     return( NULL );
 482 }
 483
 484 /*****************************************************************************
 485  * vout_DestroySubPicture: remove a subpicture from the heap
 486  *****************************************************************************
 487  * This function frees a previously reserved subpicture.
 488  * It is meant to be used when the construction of a picture aborted.
 489  * This function does not need locking since reserved subpictures are ignored
 490  * by the output thread.
 491  *****************************************************************************/
 492 void vout_DestroySubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
 493 {
 494 #ifdef DEBUG
 495    /* Check if status is valid */
 496    if( p_subpic->i_status != RESERVED_SUBPICTURE )
 497    {
 498        intf_DbgMsg("error: subpicture %p has invalid status %d\n",
 499                    p_subpic, p_subpic->i_status );
 500    }
 501 #endif
 502
 503     p_subpic->i_status = DESTROYED_SUBPICTURE;
 504
 505 #ifdef DEBUG_VOUT
 506     intf_DbgMsg("subpicture %p\n", p_subpic);
 507 #endif
 508 }
 509
 510 /*****************************************************************************
 511  * vout_DisplayPicture: display a picture
 512  *****************************************************************************
 513  * Remove the reservation flag of a picture, which will cause it to be ready for
 514  * display. The picture won't be displayed until vout_DatePicture has been
 515  * called.
 516  *****************************************************************************/
 517 void  vout_DisplayPicture( vout_thread_t *p_vout, picture_t *p_pic )
 518 {
 519     vlc_mutex_lock( &p_vout->picture_lock );
 520     switch( p_pic->i_status )
 521     {
 522     case RESERVED_PICTURE:
 523         p_pic->i_status = RESERVED_DISP_PICTURE;
 524         break;
 525     case RESERVED_DATED_PICTURE:
 526         p_pic->i_status = READY_PICTURE;
 527         break;
 528 #ifdef DEBUG
 529     default:
 530         intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status );
 531         break;
 532 #endif
 533     }
 534
 535 #ifdef DEBUG_VOUT
 536     intf_DbgMsg("picture %p\n", p_pic);
 537 #endif
 538     vlc_mutex_unlock( &p_vout->picture_lock );
 539 }
 540
 541 /*****************************************************************************
 542  * vout_DatePicture: date a picture
 543  *****************************************************************************
 544  * Remove the reservation flag of a picture, which will cause it to be ready for
 545  * display. The picture won't be displayed until vout_DisplayPicture has been
 546  * called.
 547  *****************************************************************************/
 548 void  vout_DatePicture( vout_thread_t *p_vout, picture_t *p_pic, mtime_t date )
 549 {
 550 #ifdef DEBUG_VOUT
 551     char        psz_date[MSTRTIME_MAX_SIZE];                         /* date */
 552 #endif
 553
 554     vlc_mutex_lock( &p_vout->picture_lock );
 555     p_pic->date = date;
 556     switch( p_pic->i_status )
 557     {
 558     case RESERVED_PICTURE:
 559         p_pic->i_status = RESERVED_DATED_PICTURE;
 560         break;
 561     case RESERVED_DISP_PICTURE:
 562         p_pic->i_status = READY_PICTURE;
 563         break;
 564 #ifdef DEBUG
 565     default:
 566         intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status );
 567         break;
 568 #endif
 569     }
 570
 571 #ifdef DEBUG_VOUT
 572     intf_DbgMsg("picture %p, display date: %s\n", p_pic, mstrtime( psz_date, p_pic->date) );
 573 #endif
 574     vlc_mutex_unlock( &p_vout->picture_lock );
 575 }
 576
 577 /*****************************************************************************
 578  * vout_CreatePicture: allocate a picture in the video output heap.
 579  *****************************************************************************
 580  * This function create a reserved image in the video output heap.
 581  * A null pointer is returned if the function fails. This method provides an
 582  * already allocated zone of memory in the picture data fields. It needs locking
 583  * since several pictures can be created by several producers threads.
 584  *****************************************************************************/
 585 picture_t *vout_CreatePicture( vout_thread_t *p_vout, int i_type,
 586                                int i_width, int i_height )
 587 {
 588     int         i_picture;                                  /* picture index */
 589     int         i_chroma_width = 0;                          /* chroma width */
 590     picture_t * p_free_picture = NULL;                 /* first free picture */
 591     picture_t * p_destroyed_picture = NULL;       /* first destroyed picture */
 592
 593     /* Get lock */
 594     vlc_mutex_lock( &p_vout->picture_lock );
 595
 596     /*
 597      * Look for an empty place
 598      */
 599     for( i_picture = 0; i_picture < VOUT_MAX_PICTURES; i_picture++ )
 600     {
 601         if( p_vout->p_picture[i_picture].i_status == DESTROYED_PICTURE )
 602         {
 603             /* Picture is marked for destruction, but is still allocated - note
 604              * that if width and type are the same for two pictures, chroma_width
 605              * should also be the same */
 606             if( (p_vout->p_picture[i_picture].i_type           == i_type)   &&
 607                 (p_vout->p_picture[i_picture].i_height         == i_height) &&
 608                 (p_vout->p_picture[i_picture].i_width          == i_width) )
 609             {
 610                 /* Memory size do match : memory will not be reallocated, and function
 611                  * can end immediately - this is the best possible case, since no
 612                  * memory allocation needs to be done */
 613                 p_vout->p_picture[i_picture].i_status = RESERVED_PICTURE;
 614                 p_vout->i_pictures++;
 615 #ifdef DEBUG_VOUT
 616                 intf_DbgMsg("picture %p (in destroyed picture slot)\n",
 617                             &p_vout->p_picture[i_picture] );
 618 #endif
 619                 vlc_mutex_unlock( &p_vout->picture_lock );
 620                 return( &p_vout->p_picture[i_picture] );
 621             }
 622             else if( p_destroyed_picture == NULL )
 623             {
 624                 /* Memory size do not match, but picture index will be kept in
 625                  * case no other place are left */
 626                 p_destroyed_picture = &p_vout->p_picture[i_picture];
 627             }
 628         }
 629         else if( (p_free_picture == NULL) &&
 630                  (p_vout->p_picture[i_picture].i_status == FREE_PICTURE ))
 631         {
 632             /* Picture is empty and ready for allocation */
 633             p_free_picture = &p_vout->p_picture[i_picture];
 634         }
 635     }
 636
 637     /* If no free picture is available, use a destroyed picture */
 638     if( (p_free_picture == NULL) && (p_destroyed_picture != NULL ) )
 639     {
 640         /* No free picture or matching destroyed picture has been found, but
 641          * a destroyed picture is still avalaible */
 642         free( p_destroyed_picture->p_data );
 643         p_free_picture = p_destroyed_picture;
 644     }
 645
 646     /*
 647      * Prepare picture
 648      */
 649     if( p_free_picture != NULL )
 650     {
 651         /* Allocate memory */
 652         switch( i_type )
 653         {
 654         case YUV_420_PICTURE:        /* YUV 420: 1,1/4,1/4 samples per pixel */
 655             i_chroma_width = i_width / 2;
 656             p_free_picture->p_data = malloc( i_height * i_chroma_width * 3 * sizeof( yuv_data_t ) );
 657             p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
 658             p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*4/2;
 659             p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*5/2;
 660             break;
 661         case YUV_422_PICTURE:        /* YUV 422: 1,1/2,1/2 samples per pixel */
 662             i_chroma_width = i_width / 2;
 663             p_free_picture->p_data = malloc( i_height * i_chroma_width * 4 * sizeof( yuv_data_t ) );
 664             p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
 665             p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*2;
 666             p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*3;
 667             break;
 668         case YUV_444_PICTURE:            /* YUV 444: 1,1,1 samples per pixel */
 669             i_chroma_width = i_width;
 670             p_free_picture->p_data = malloc( i_height * i_chroma_width * 3 * sizeof( yuv_data_t ) );
 671             p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
 672             p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width;
 673             p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*2;
 674             break;
 675 #ifdef DEBUG
 676         default:
 677             intf_DbgMsg("error: unknown picture type %d\n", i_type );
 678             p_free_picture->p_data   =  NULL;
 679             break;
 680 #endif
 681         }
 682
 683         if( p_free_picture->p_data != NULL )
 684         {
 685             /* Copy picture information, set some default values */
 686             p_free_picture->i_type                      = i_type;
 687             p_free_picture->i_status                    = RESERVED_PICTURE;
 688             p_free_picture->i_matrix_coefficients       = 1;
 689             p_free_picture->i_width                     = i_width;
 690             p_free_picture->i_height                    = i_height;
 691             p_free_picture->i_chroma_width              = i_chroma_width;
 692             p_free_picture->i_display_horizontal_offset = 0;
 693             p_free_picture->i_display_vertical_offset   = 0;
 694             p_free_picture->i_display_width             = i_width;
 695             p_free_picture->i_display_height            = i_height;
 696             p_free_picture->i_aspect_ratio              = AR_SQUARE_PICTURE;
 697             p_free_picture->i_refcount                  = 0;
 698             p_vout->i_pictures++;
 699         }
 700         else
 701         {
 702             /* Memory allocation failed : set picture as empty */
 703             p_free_picture->i_type   =  EMPTY_PICTURE;
 704             p_free_picture->i_status =  FREE_PICTURE;
 705             p_free_picture =            NULL;
 706             intf_ErrMsg( "vout warning: %s\n", strerror( ENOMEM ) );
 707         }
 708
 709 #ifdef DEBUG_VOUT
 710         intf_DbgMsg("picture %p (in free picture slot)\n", p_free_picture );
 711 #endif
 712         vlc_mutex_unlock( &p_vout->picture_lock );
 713         return( p_free_picture );
 714     }
 715
 716     /* No free or destroyed picture could be found */
 717     intf_DbgMsg( "warning: picture heap is full\n" );
 718     vlc_mutex_unlock( &p_vout->picture_lock );
 719     return( NULL );
 720 }
 721
 722 /*****************************************************************************
 723  * vout_DestroyPicture: remove a permanent or reserved picture from the heap
 724  *****************************************************************************
 725  * This function frees a previously reserved picture or a permanent
 726  * picture. It is meant to be used when the construction of a picture aborted.
 727  * Note that the picture will be destroyed even if it is linked !
 728  *****************************************************************************/
 729 void vout_DestroyPicture( vout_thread_t *p_vout, picture_t *p_pic )
 730 {
 731    vlc_mutex_lock( &p_vout->picture_lock );
 732
 733 #ifdef DEBUG
 734    /* Check if picture status is valid */
 735    if( (p_pic->i_status != RESERVED_PICTURE) &&
 736        (p_pic->i_status != RESERVED_DATED_PICTURE) &&
 737        (p_pic->i_status != RESERVED_DISP_PICTURE) )
 738    {
 739        intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status );
 740    }
 741 #endif
 742
 743    p_pic->i_status = DESTROYED_PICTURE;
 744    p_vout->i_pictures--;
 745
 746 #ifdef DEBUG_VOUT
 747    intf_DbgMsg("picture %p\n", p_pic);
 748 #endif
 749    vlc_mutex_unlock( &p_vout->picture_lock );
 750 }
 751
 752 /*****************************************************************************
 753  * vout_LinkPicture: increment reference counter of a picture
 754  *****************************************************************************
 755  * This function increment the reference counter of a picture in the video
 756  * heap. It needs a lock since several producer threads can access the picture.
 757  *****************************************************************************/
 758 void vout_LinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
 759 {
 760     vlc_mutex_lock( &p_vout->picture_lock );
 761     p_pic->i_refcount++;
 762
 763 #ifdef DEBUG_VOUT
 764     intf_DbgMsg("picture %p refcount=%d\n", p_pic, p_pic->i_refcount );
 765 #endif
 766
 767     vlc_mutex_unlock( &p_vout->picture_lock );
 768 }
 769
 770 /*****************************************************************************
 771  * vout_UnlinkPicture: decrement reference counter of a picture
 772  *****************************************************************************
 773  * This function decrement the reference counter of a picture in the video heap.
 774  *****************************************************************************/
 775 void vout_UnlinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
 776 {
 777     vlc_mutex_lock( &p_vout->picture_lock );
 778     p_pic->i_refcount--;
 779
 780 #ifdef DEBUG_VOUT
 781     if( p_pic->i_refcount < 0 )
 782     {
 783         intf_DbgMsg("error: refcount < 0\n");
 784         p_pic->i_refcount = 0;
 785     }
 786 #endif
 787
 788     if( (p_pic->i_refcount == 0) && (p_pic->i_status == DISPLAYED_PICTURE) )
 789     {
 790         p_pic->i_status = DESTROYED_PICTURE;
 791         p_vout->i_pictures--;
 792     }
 793
 794 #ifdef DEBUG_VOUT
 795     intf_DbgMsg("picture %p refcount=%d\n", p_pic, p_pic->i_refcount );
 796 #endif
 797
 798     vlc_mutex_unlock( &p_vout->picture_lock );
 799 }
 800
 801 /*****************************************************************************
 802  * vout_SetBuffers: set buffers adresses
 803  *****************************************************************************
 804  * This function is called by system drivers to set buffers video memory
 805  * adresses.
 806  *****************************************************************************/
 807 void vout_SetBuffers( vout_thread_t *p_vout, void *p_buf1, void *p_buf2 )
 808 {
 809     /* No picture previously */
 810     p_vout->p_buffer[0].i_pic_x =         0;
 811     p_vout->p_buffer[0].i_pic_y =         0;
 812     p_vout->p_buffer[0].i_pic_width =     0;
 813     p_vout->p_buffer[0].i_pic_height =    0;
 814     p_vout->p_buffer[1].i_pic_x =         0;
 815     p_vout->p_buffer[1].i_pic_y =         0;
 816     p_vout->p_buffer[1].i_pic_width =     0;
 817     p_vout->p_buffer[1].i_pic_height =    0;
 818
 819     /* The first area covers all the screen */
 820     p_vout->p_buffer[0].i_areas =                 1;
 821     p_vout->p_buffer[0].pi_area_begin[0] =        0;
 822     p_vout->p_buffer[0].pi_area_end[0] =          p_vout->i_height - 1;
 823     p_vout->p_buffer[1].i_areas =                 1;
 824     p_vout->p_buffer[1].pi_area_begin[0] =        0;
 825     p_vout->p_buffer[1].pi_area_end[0] =          p_vout->i_height - 1;
 826
 827     /* Set adresses */
 828     p_vout->p_buffer[0].p_data = p_buf1;
 829     p_vout->p_buffer[1].p_data = p_buf2;
 830 }
 831
 832 /*****************************************************************************
 833  * vout_Pixel2RGB: return red, green and blue from pixel value
 834  *****************************************************************************
 835  * Return color values, in 0-255 range, of the decomposition of a pixel. This
 836  * is a slow routine and should only be used for initialization phase.
 837  *****************************************************************************/
 838 void vout_Pixel2RGB( vout_thread_t *p_vout, u32 i_pixel, int *pi_red, int *pi_green, int *pi_blue )
 839 {
 840     *pi_red =   i_pixel & p_vout->i_red_mask;
 841     *pi_green = i_pixel & p_vout->i_green_mask;
 842     *pi_blue =  i_pixel & p_vout->i_blue_mask;
 843 }
 844
 845 /* following functions are local */
 846
 847 /*****************************************************************************
 848  * BinaryLog: computes the base 2 log of a binary value
 849  *****************************************************************************
 850  * This functions is used by MaskToShift, to get a bit index from a binary
 851  * value.
 852  *****************************************************************************/
 853 static int BinaryLog(u32 i)
 854 {
 855     int i_log;
 856
 857     i_log = 0;
 858     if (i & 0xffff0000)
 859     {
 860         i_log = 16;
 861     }
 862     if (i & 0xff00ff00)
 863     {
 864         i_log += 8;
 865     }
 866     if (i & 0xf0f0f0f0)
 867     {
 868         i_log += 4;
 869     }
 870     if (i & 0xcccccccc)
 871     {
 872         i_log += 2;
 873     }
 874     if (i & 0xaaaaaaaa)
 875     {
 876         i_log++;
 877     }
 878     if (i != ((u32)1 << i_log))
 879     {
 880         intf_DbgMsg("internal error: binary log overflow\n");
 881     }
 882
 883     return( i_log );
 884 }
 885
 886 /*****************************************************************************
 887  * MaskToShift: transform a color mask into right and left shifts
 888  *****************************************************************************
 889  * This function is used for obtaining color shifts from masks.
 890  *****************************************************************************/
 891 static void MaskToShift( int *pi_left, int *pi_right, u32 i_mask )
 892 {
 893     u32 i_low, i_high;                 /* lower hand higher bits of the mask */
 894
 895     /* Get bits */
 896     i_low =  i_mask & (- i_mask);                   /* lower bit of the mask */
 897     i_high = i_mask + i_low;                       /* higher bit of the mask */
 898
 899     /* Transform bits into an index */
 900     i_low =  BinaryLog (i_low);
 901     i_high = BinaryLog (i_high);
 902
 903     /* Update pointers and return */
 904     *pi_left =   i_low;
 905     *pi_right = (8 - i_high + i_low);
 906 }
 907
 908 /*****************************************************************************
 909  * InitThread: initialize video output thread
 910  *****************************************************************************
 911  * This function is called from RunThread and performs the second step of the
 912  * initialization. It returns 0 on success. Note that the thread's flag are not
 913  * modified inside this function.
 914  *****************************************************************************/
 915 static int InitThread( vout_thread_t *p_vout )
 916 {
 917     /* Update status */
 918     intf_DbgMsg("\n");
 919     *p_vout->pi_status = THREAD_START;
 920
 921 #ifdef STATS
 922     p_vout->c_loops = 0;
 923 #endif
 924
 925    /* Initialize output method - this function issues its own error messages */
 926     if( p_vout->p_sys_init( p_vout ) )
 927     {
 928         return( 1 );
 929     }
 930
 931     if( p_vout->b_need_render )
 932     {
 933         /* Initialize convertion tables and functions */
 934         if( vout_InitYUV( p_vout ) )
 935         {
 936             intf_ErrMsg("error: can't allocate YUV translation tables\n");
 937             return( 1 );
 938         }
 939     }
 940
 941     /* Mark thread as running and return */
 942     p_vout->b_active =          1;
 943     *p_vout->pi_status =        THREAD_READY;
 944
 945
 946     intf_DbgMsg("thread ready\n");
 947     return( 0 );
 948 }
 949
 950 /*****************************************************************************
 951  * RunThread: video output thread
 952  *****************************************************************************
 953  * Video output thread. This function does only returns when the thread is
 954  * terminated. It handles the pictures arriving in the video heap and the
 955  * display device events.
 956  *****************************************************************************/
 957 static void RunThread( vout_thread_t *p_vout)
 958 {
 959     int             i_index;                                /* index in heap */
 960     mtime_t         current_date;                            /* current date */
 961     mtime_t         display_date;                            /* display date */
 962     boolean_t       b_display;                               /* display flag */
 963     picture_t *     p_pic;                                /* picture pointer */
 964     subpicture_t *  p_subpic;                          /* subpicture pointer */
 965
 966     /*
 967      * Initialize thread
 968      */
 969     p_vout->b_error = InitThread( p_vout );
 970     if( p_vout->b_error )
 971     {
 972         DestroyThread( p_vout, THREAD_ERROR );
 973         return;
 974     }
 975     intf_DbgMsg("\n");
 976
 977     /*
 978      * Main loop - it is not executed if an error occured during
 979      * initialization
 980      */
 981     while( (!p_vout->b_die) && (!p_vout->b_error) )
 982     {
 983         /* Initialize loop variables */
 984         p_pic =         NULL;
 985         p_subpic =      NULL;
 986         display_date =  0;
 987         current_date =  mdate();
 988 #ifdef STATS
 989         p_vout->c_loops++;
 990         if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
 991         {
 992             intf_Msg("vout stats: picture heap: %d/%d\n",
 993                      p_vout->i_pictures, VOUT_MAX_PICTURES);
 994         }
 995 #endif
 996
 997         /*
 998          * Find the picture to display - this operation does not need lock,
 999          * since only READY_PICTUREs are handled
1000          */
1001         for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++ )
1002         {
1003             if( (p_vout->p_picture[i_index].i_status == READY_PICTURE) &&
1004             ( (p_pic == NULL) ||
1005               (p_vout->p_picture[i_index].date < display_date) ) )
1006             {
1007                 p_pic = &p_vout->p_picture[i_index];
1008                 display_date = p_pic->date;
1009             }
1010         }
1011
1012         if( p_pic )
1013         {
1014             /* Computes FPS rate */
1015             p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ] = display_date;
1016
1017             if( display_date < current_date - p_vout->render_time )
1018             {
1019                 /* Picture is late: it will be destroyed and the thread
1020                  * will sleep and go to next picture */
1021
1022                 vlc_mutex_lock( &p_vout->picture_lock );
1023                 if( p_pic->i_refcount )
1024                 {
1025                     p_pic->i_status = DISPLAYED_PICTURE;
1026                 }
1027                 else
1028                 {
1029                     p_pic->i_status = DESTROYED_PICTURE;
1030                     p_vout->i_pictures--;
1031                 }
1032                 intf_WarnMsg( 3,
1033                         "warning: late picture skipped (%p)\n", p_pic );
1034                 vlc_mutex_unlock( &p_vout->picture_lock );
1035
1036                 continue;
1037             }
1038             else if( display_date > current_date + VOUT_DISPLAY_DELAY )
1039             {
1040                 /* A picture is ready to be rendered, but its rendering date
1041                  * is far from the current one so the thread will perform an
1042                  * empty loop as if no picture were found. The picture state
1043                  * is unchanged */
1044                 p_pic =         NULL;
1045                 display_date =  0;
1046             }
1047         }
1048         /*
1049          * Find the subpictures to display - this operation does not need
1050          * lock, since only READY_SUBPICTURE are handled. If no picture
1051          * has been selected, display_date will depend on the subpicture.
1052          * We get an easily parsable chained list of subpictures which
1053          * ends with NULL since p_subpic was initialized to NULL.
1054          */
1055         for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
1056         {
1057             if( p_vout->p_subpicture[i_index].i_status == READY_SUBPICTURE )
1058             {
1059                 p_vout->p_subpicture[i_index].p_next = p_subpic;
1060                 p_subpic = &p_vout->p_subpicture[i_index];
1061             }
1062         }
1063
1064         /*
1065          * Perform rendering, sleep and display rendered picture
1066          */
1067         if( p_pic )                        /* picture and perhaps subpicture */
1068         {
1069             b_display = p_vout->b_active;
1070             p_vout->last_display_date = display_date;
1071             p_vout->p_rendered_pic = p_pic;
1072
1073
1074
1075
1076             /* FIXME: if b_need_render == 0 we need to do something with
1077              * the subpictures one day. */
1078             if( p_vout->b_need_render && b_display )
1079             {
1080                 /* Set picture dimensions and clear buffer */
1081                 SetBufferPicture( p_vout, p_pic );
1082
1083                 /* Render picture and information */
1084                 RenderPicture( p_vout, p_pic );
1085                 if( p_vout->b_info )
1086                 {
1087                     RenderPictureInfo( p_vout, p_pic );
1088                     RenderInfo( p_vout );
1089                 }
1090                 if( p_subpic )
1091                 {
1092                     RenderSubPicture( p_vout, p_subpic );
1093                 }
1094             }
1095
1096             /* Render interface and subpicture */
1097             if( b_display && p_vout->b_interface && p_vout->b_need_render )
1098             {
1099                 RenderInterface( p_vout );
1100             }
1101
1102         }
1103         else if( p_vout->b_active && p_vout->b_need_render
1104                   && p_vout->init_display_date == 0)
1105         {
1106             /* Idle or interface screen alone */
1107
1108             if( p_vout->b_interface && 0 /* && XXX?? intf_change */ )
1109             {
1110                 /* Interface has changed, so a new rendering is required - force
1111                  * it by setting last idle date to 0 */
1112                 p_vout->last_idle_date = 0;
1113             }
1114
1115             /* Render idle screen and update idle date, then render interface if
1116              * required */
1117             b_display = RenderIdle( p_vout );
1118             if( b_display )
1119             {
1120                 p_vout->last_idle_date = current_date;
1121                 if( p_vout->b_interface )
1122                 {
1123                     RenderInterface( p_vout );
1124                 }
1125             }
1126
1127         }
1128         else
1129         {
1130             b_display = 0;
1131         }
1132
1133
1134         /*
1135          * Check for the current time and
1136          * display splash screen if everything is on time
1137          */
1138         if( p_vout->init_display_date > 0 && p_vout->b_need_render )
1139         {
1140             if( p_vout->b_active &&
1141                     mdate()-p_vout->init_display_date < 5000000)
1142             {
1143                 /* there is something to display ! */
1144                     b_display = 1;
1145                     RenderSplash( p_vout );
1146
1147             } else {
1148                 /* no splash screen ! */
1149                 intf_ErrMsgImm("End of splash screen\n");
1150                 p_vout->init_display_date=0;
1151             }
1152         }
1153
1154
1155         /*
1156          * Sleep, wake up and display rendered picture
1157          */
1158
1159         if( display_date != 0 )
1160         {
1161             /* Store render time using Bresenham algorithm */
1162             p_vout->render_time += mdate() - current_date;
1163             p_vout->render_time >>= 1;
1164         }
1165
1166         /* Give back change lock */
1167         vlc_mutex_unlock( &p_vout->change_lock );
1168
1169         /* Sleep a while or until a given date */
1170         if( display_date != 0 )
1171         {
1172             mwait( display_date - VOUT_MWAIT_TOLERANCE );
1173         }
1174         else
1175         {
1176             msleep( VOUT_IDLE_SLEEP );
1177         }
1178
1179         /* On awakening, take back lock and send immediately picture to display,
1180          * then swap buffers */
1181         vlc_mutex_lock( &p_vout->change_lock );
1182 #ifdef DEBUG_VOUT
1183         intf_DbgMsg( "picture %p, subpicture %p in buffer %d, display=%d\n", p_pic, p_subpic,
1184                      p_vout->i_buffer_index, b_display /* && !(p_vout->i_changes & VOUT_NODISPLAY_CHANGE) */ );
1185 #endif
1186         if( b_display /* && !(p_vout->i_changes & VOUT_NODISPLAY_CHANGE) */ )
1187         {
1188             p_vout->p_sys_display( p_vout );
1189 #ifndef SYS_BEOS
1190             p_vout->i_buffer_index = ++p_vout->i_buffer_index & 1;
1191 #endif
1192         }
1193
1194         if( p_pic )
1195         {
1196             /* Remove picture from heap */
1197             vlc_mutex_lock( &p_vout->picture_lock );
1198             if( p_pic->i_refcount )
1199             {
1200                 p_pic->i_status = DISPLAYED_PICTURE;
1201             }
1202             else
1203             {
1204                 p_pic->i_status = DESTROYED_PICTURE;
1205                 p_vout->i_pictures--;
1206             }
1207             vlc_mutex_unlock( &p_vout->picture_lock );
1208         }
1209
1210
1211         /*
1212          * Check events and manage thread
1213          */
1214         if( p_vout->p_sys_manage( p_vout ) | Manage( p_vout ) )
1215         {
1216             /* A fatal error occured, and the thread must terminate immediately,
1217              * without displaying anything - setting b_error to 1 cause the
1218              * immediate end of the main while() loop. */
1219             p_vout->b_error = 1;
1220         }
1221     }
1222
1223     /*
1224      * Error loop - wait until the thread destruction is requested
1225      */
1226     if( p_vout->b_error )
1227     {
1228         ErrorThread( p_vout );
1229     }
1230
1231     /* End of thread */
1232     EndThread( p_vout );
1233     DestroyThread( p_vout, THREAD_OVER );
1234     intf_DbgMsg( "thread end\n" );
1235 }
1236
1237 /*****************************************************************************
1238  * ErrorThread: RunThread() error loop
1239  *****************************************************************************
1240  * This function is called when an error occured during thread main's loop. The
1241  * thread can still receive feed, but must be ready to terminate as soon as
1242  * possible.
1243  *****************************************************************************/
1244 static void ErrorThread( vout_thread_t *p_vout )
1245 {
1246     /* Wait until a `die' order */
1247     intf_DbgMsg("\n");
1248     while( !p_vout->b_die )
1249     {
1250         /* Sleep a while */
1251         msleep( VOUT_IDLE_SLEEP );
1252     }
1253 }
1254
1255 /*****************************************************************************
1256  * EndThread: thread destruction
1257  *****************************************************************************
1258  * This function is called when the thread ends after a sucessful
1259  * initialization. It frees all ressources allocated by InitThread.
1260  *****************************************************************************/
1261 static void EndThread( vout_thread_t *p_vout )
1262 {
1263     int     i_index;                                        /* index in heap */
1264
1265     /* Store status */
1266     intf_DbgMsg("\n");
1267     *p_vout->pi_status = THREAD_END;
1268
1269 #ifdef STATS
1270     {
1271         struct tms cpu_usage;
1272         times( &cpu_usage );
1273
1274         intf_Msg("vout stats: cpu usage (user: %d, system: %d)\n",
1275                  cpu_usage.tms_utime, cpu_usage.tms_stime);
1276     }
1277 #endif
1278
1279     /* Destroy all remaining pictures and subpictures */
1280     for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++ )
1281     {
1282         if( p_vout->p_picture[i_index].i_status != FREE_PICTURE )
1283         {
1284             free( p_vout->p_picture[i_index].p_data );
1285         }
1286     }
1287     for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
1288     {
1289         if( p_vout->p_subpicture[i_index].i_status != FREE_SUBPICTURE )
1290         {
1291             free( p_vout->p_subpicture[i_index].p_data );
1292         }
1293     }
1294
1295     /* Destroy translation tables */
1296     vout_EndYUV( p_vout );
1297     p_vout->p_sys_end( p_vout );
1298 }
1299
1300 /*****************************************************************************
1301  * DestroyThread: thread destruction
1302  *****************************************************************************
1303  * This function is called when the thread ends. It frees all ressources
1304  * allocated by CreateThread. Status is available at this stage.
1305  *****************************************************************************/
1306 static void DestroyThread( vout_thread_t *p_vout, int i_status )
1307 {
1308     int *pi_status;                                         /* status adress */
1309
1310     /* Store status adress */
1311     intf_DbgMsg("\n");
1312     pi_status = p_vout->pi_status;
1313
1314     /* Destroy thread structures allocated by Create and InitThread */
1315     vout_UnloadFont( p_vout->p_default_font );
1316     vout_UnloadFont( p_vout->p_large_font );
1317     p_vout->p_sys_destroy( p_vout );
1318
1319     /* Free structure */
1320     free( p_vout );
1321     *pi_status = i_status;
1322 }
1323
1324 /*****************************************************************************
1325  * Print: print simple text on a picture
1326  *****************************************************************************
1327  * This function will print a simple text on the picture. It is designed to
1328  * print debugging or general information.
1329  *****************************************************************************/
1330 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 )
1331 {
1332     int                 i_text_height;                  /* total text height */
1333     int                 i_text_width;                    /* total text width */
1334
1335     /* Update upper left coordinates according to alignment */
1336     vout_TextSize( p_vout->p_default_font, 0, psz_text, &i_text_width, &i_text_height );
1337     if( !Align( p_vout, &i_x, &i_y, i_text_width, i_text_height, i_h_align, i_v_align ) )
1338     {
1339         /* Set area and print text */
1340         SetBufferArea( p_vout, i_x, i_y, i_text_width, i_text_height );
1341         vout_Print( p_vout->p_default_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1342                     i_y * p_vout->i_bytes_per_line + i_x * p_vout->i_bytes_per_pixel,
1343                     p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1344                     p_vout->i_white_pixel, 0, 0,
1345                     0, psz_text, 100 );
1346     }
1347 }
1348
1349 /*****************************************************************************
1350  * SetBufferArea: activate an area in current buffer
1351  *****************************************************************************
1352  * This function is called when something is rendered on the current buffer.
1353  * It set the area as active and prepare it to be cleared on next rendering.
1354  * Pay attention to the fact that in this functions, i_h is in fact the end y
1355  * coordinate of the new area.
1356  *****************************************************************************/
1357 static void SetBufferArea( vout_thread_t *p_vout, int i_x, int i_y, int i_w, int i_h )
1358 {
1359     vout_buffer_t *     p_buffer;                          /* current buffer */
1360     int                 i_area_begin, i_area_end; /* area vertical extension */
1361     int                 i_area, i_area_copy;                   /* area index */
1362     int                 i_area_shift;            /* shift distance for areas */
1363
1364     /* Choose buffer and modify h to end of area position */
1365     p_buffer =  &p_vout->p_buffer[ p_vout->i_buffer_index ];
1366     i_h +=      i_y - 1;
1367
1368     /*
1369      * Remove part of the area which is inside the picture - this is done
1370      * by calling again SetBufferArea with the correct areas dimensions.
1371      */
1372     if( (i_x >= p_buffer->i_pic_x) && (i_x + i_w <= p_buffer->i_pic_x + p_buffer->i_pic_width) )
1373     {
1374         i_area_begin =  p_buffer->i_pic_y;
1375         i_area_end =    i_area_begin + p_buffer->i_pic_height - 1;
1376
1377         if( ((i_y >= i_area_begin) && (i_y <= i_area_end)) ||
1378             ((i_h >= i_area_begin) && (i_h <= i_area_end)) ||
1379             ((i_y <  i_area_begin) && (i_h > i_area_end)) )
1380         {
1381             /* Keep the stripe above the picture, if any */
1382             if( i_y < i_area_begin )
1383             {
1384                 SetBufferArea( p_vout, i_x, i_y, i_w, i_area_begin - i_y );
1385             }
1386             /* Keep the stripe below the picture, if any */
1387             if( i_h > i_area_end )
1388             {
1389                 SetBufferArea( p_vout, i_x, i_area_end, i_w, i_h - i_area_end );
1390             }
1391             return;
1392         }
1393     }
1394
1395     /* Skip some extensions until interesting areas */
1396     for( i_area = 0;
1397          (i_area < p_buffer->i_areas) &&
1398              (p_buffer->pi_area_end[i_area] + 1 <= i_y);
1399          i_area++ )
1400     {
1401         ;
1402     }
1403
1404     if( i_area == p_buffer->i_areas )
1405     {
1406         /* New area is below all existing ones: just add it at the end of the
1407          * array, if possible - otherwise, append it to the last one */
1408         if( i_area < VOUT_MAX_AREAS )
1409         {
1410             p_buffer->pi_area_begin[i_area] = i_y;
1411             p_buffer->pi_area_end[i_area] = i_h;
1412             p_buffer->i_areas++;
1413         }
1414         else
1415         {
1416 #ifdef DEBUG_VOUT
1417             intf_DbgMsg("area overflow\n");
1418 #endif
1419             p_buffer->pi_area_end[VOUT_MAX_AREAS - 1] = i_h;
1420         }
1421     }
1422     else
1423     {
1424         i_area_begin =  p_buffer->pi_area_begin[i_area];
1425         i_area_end =    p_buffer->pi_area_end[i_area];
1426
1427         if( i_y < i_area_begin )
1428         {
1429             if( i_h >= i_area_begin - 1 )
1430             {
1431                 /* Extend area above */
1432                 p_buffer->pi_area_begin[i_area] = i_y;
1433             }
1434             else
1435             {
1436                 /* Create a new area above : merge last area if overflow, then
1437                  * move all old areas down */
1438                 if( p_buffer->i_areas == VOUT_MAX_AREAS )
1439                 {
1440 #ifdef DEBUG_VOUT
1441                     intf_DbgMsg("areas overflow\n");
1442 #endif
1443                     p_buffer->pi_area_end[VOUT_MAX_AREAS - 2] = p_buffer->pi_area_end[VOUT_MAX_AREAS - 1];
1444                 }
1445                 else
1446                 {
1447                     p_buffer->i_areas++;
1448                 }
1449                 for( i_area_copy = p_buffer->i_areas - 1; i_area_copy > i_area; i_area_copy-- )
1450                 {
1451                     p_buffer->pi_area_begin[i_area_copy] = p_buffer->pi_area_begin[i_area_copy - 1];
1452                     p_buffer->pi_area_end[i_area_copy] =   p_buffer->pi_area_end[i_area_copy - 1];
1453                 }
1454                 p_buffer->pi_area_begin[i_area] = i_y;
1455                 p_buffer->pi_area_end[i_area] = i_h;
1456                 return;
1457             }
1458         }
1459         if( i_h > i_area_end )
1460         {
1461             /* Find further areas which can be merged with the new one */
1462             for( i_area_copy = i_area + 1;
1463                  (i_area_copy < p_buffer->i_areas) &&
1464                      (p_buffer->pi_area_begin[i_area] <= i_h);
1465                  i_area_copy++ )
1466             {
1467                 ;
1468             }
1469             i_area_copy--;
1470
1471             if( i_area_copy != i_area )
1472             {
1473                 /* Merge with last possible areas */
1474                 p_buffer->pi_area_end[i_area] = MAX( i_h, p_buffer->pi_area_end[i_area_copy] );
1475
1476                 /* Shift lower areas upward */
1477                 i_area_shift = i_area_copy - i_area;
1478                 p_buffer->i_areas -= i_area_shift;
1479                 for( i_area_copy = i_area + 1; i_area_copy < p_buffer->i_areas; i_area_copy++ )
1480                 {
1481                     p_buffer->pi_area_begin[i_area_copy] = p_buffer->pi_area_begin[i_area_copy + i_area_shift];
1482                     p_buffer->pi_area_end[i_area_copy] =   p_buffer->pi_area_end[i_area_copy + i_area_shift];
1483                 }
1484             }
1485             else
1486             {
1487                 /* Extend area below */
1488                 p_buffer->pi_area_end[i_area] = i_h;
1489             }
1490         }
1491     }
1492 }
1493
1494 /*****************************************************************************
1495  * SetBufferPicture: clear buffer and set picture area
1496  *****************************************************************************
1497  * This function is called before any rendering. It clears the current
1498  * rendering buffer and set the new picture area. If the picture pointer is
1499  * NULL, then no picture area is defined. Floating operations are avoided since
1500  * some MMX calculations may follow.
1501  *****************************************************************************/
1502 static void SetBufferPicture( vout_thread_t *p_vout, picture_t *p_pic )
1503 {
1504     vout_buffer_t *     p_buffer;                          /* current buffer */
1505     int                 i_pic_x, i_pic_y;                /* picture position */
1506     int                 i_pic_width, i_pic_height;     /* picture dimensions */
1507     int                 i_old_pic_y, i_old_pic_height;   /* old picture area */
1508     int                 i_vout_width, i_vout_height;   /* display dimensions */
1509     int                 i_area;                                /* area index */
1510     int                 i_data_index;                     /* area data index */
1511     int                 i_data_size;   /* area data size, in 256 bytes blocs */
1512     u64 *               p_data;                   /* area data, for clearing */
1513     byte_t *            p_data8;           /* area data, for clearing (slow) */
1514
1515     /* Choose buffer and set display dimensions */
1516     p_buffer =          &p_vout->p_buffer[ p_vout->i_buffer_index ];
1517     i_vout_width =      p_vout->i_width;
1518     i_vout_height =     p_vout->i_height;
1519
1520     /*
1521      * Computes new picture size
1522      */
1523     if( p_pic != NULL )
1524     {
1525         /* Try horizontal scaling first - width must be a mutiple of 16 */
1526         i_pic_width = (( p_vout->b_scale || (p_pic->i_width > i_vout_width)) ?
1527                        i_vout_width : p_pic->i_width) & ~0xf;
1528         switch( p_pic->i_aspect_ratio )
1529         {
1530         case AR_3_4_PICTURE:
1531             i_pic_height = i_pic_width * 3 / 4;
1532             break;
1533         case AR_16_9_PICTURE:
1534             i_pic_height = i_pic_width * 9 / 16;
1535             break;
1536         case AR_221_1_PICTURE:
1537             i_pic_height = i_pic_width * 100 / 221;
1538             break;
1539         case AR_SQUARE_PICTURE:
1540         default:
1541             i_pic_height = p_pic->i_height * i_pic_width / p_pic->i_width;
1542             break;
1543         }
1544
1545         /* If picture dimensions using horizontal scaling are too large, use
1546          * vertical scaling. Since width must be a multiple of 16, height is
1547          * adjusted again after. */
1548         if( i_pic_height > i_vout_height )
1549         {
1550             i_pic_height = ( p_vout->b_scale || (p_pic->i_height > i_vout_height)) ?
1551                 i_vout_height : p_pic->i_height;
1552             switch( p_pic->i_aspect_ratio )
1553             {
1554             case AR_3_4_PICTURE:
1555                 i_pic_width = (i_pic_height * 4 / 3) & ~0xf;
1556                 i_pic_height = i_pic_width * 3 / 4;
1557                 break;
1558             case AR_16_9_PICTURE:
1559                 i_pic_width = (i_pic_height * 16 / 9) & ~0xf;
1560                 i_pic_height = i_pic_width * 9 / 16;
1561                 break;
1562             case AR_221_1_PICTURE:
1563                 i_pic_width = (i_pic_height * 221 / 100) & ~0xf;
1564                 i_pic_height = i_pic_width * 100 / 221;
1565                 break;
1566             case AR_SQUARE_PICTURE:
1567             default:
1568                 i_pic_width = (p_pic->i_width * i_pic_height / p_pic->i_height) & ~0xf;
1569                 i_pic_height = p_pic->i_height * i_pic_width / p_pic->i_width;
1570                 break;
1571             }
1572         }
1573
1574         /* Set picture position */
1575         i_pic_x = (p_vout->i_width - i_pic_width) / 2;
1576         i_pic_y = (p_vout->i_height - i_pic_height) / 2;
1577
1578     }
1579     else
1580     {
1581         /* No picture: size is 0 */
1582         i_pic_x =       0;
1583         i_pic_y =       0;
1584         i_pic_width =   0;
1585         i_pic_height =  0;
1586     }
1587
1588     /*
1589      * Set new picture size - if it is smaller than the previous one, clear
1590      * around it. Since picture are centered, only their size is tested.
1591      */
1592     if( (p_buffer->i_pic_width > i_pic_width) || (p_buffer->i_pic_height > i_pic_height) )
1593     {
1594         i_old_pic_y =            p_buffer->i_pic_y;
1595         i_old_pic_height =       p_buffer->i_pic_height;
1596         p_buffer->i_pic_x =      i_pic_x;
1597         p_buffer->i_pic_y =      i_pic_y;
1598         p_buffer->i_pic_width =  i_pic_width;
1599         p_buffer->i_pic_height = i_pic_height;
1600         SetBufferArea( p_vout, 0, i_old_pic_y, p_vout->i_width, i_old_pic_height );
1601     }
1602     else
1603     {
1604         p_buffer->i_pic_x =      i_pic_x;
1605         p_buffer->i_pic_y =      i_pic_y;
1606         p_buffer->i_pic_width =  i_pic_width;
1607         p_buffer->i_pic_height = i_pic_height;
1608     }
1609
1610     /*
1611      * Clear areas
1612      */
1613     for( i_area = 0; i_area < p_buffer->i_areas; i_area++ )
1614     {
1615 #ifdef DEBUG_VOUT
1616         intf_DbgMsg("clearing picture %p area in buffer %d: %d-%d\n", p_pic,
1617                     p_vout->i_buffer_index, p_buffer->pi_area_begin[i_area], p_buffer->pi_area_end[i_area] );
1618 #endif
1619         i_data_size = (p_buffer->pi_area_end[i_area] - p_buffer->pi_area_begin[i_area] + 1) * p_vout->i_bytes_per_line;
1620         p_data = (u64*) (p_buffer->p_data + p_vout->i_bytes_per_line * p_buffer->pi_area_begin[i_area]);
1621         for( i_data_index = i_data_size / 256; i_data_index-- ; )
1622         {
1623             /* Clear 256 bytes block */
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             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1628             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1629             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1630             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1631             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1632         }
1633         for( i_data_index = (i_data_size % 256) / 16; i_data_index--; )
1634         {
1635             /* Clear remaining 16 bytes blocks */
1636             *p_data++ = 0;  *p_data++ = 0;
1637         }
1638         p_data8 = (byte_t *)p_data;
1639         for( i_data_index = i_data_size % 16; i_data_index--; )
1640         {
1641             /* Clear remaining bytes */
1642             *p_data8++ = 0;
1643         }
1644     }
1645
1646     /*
1647      * Clear areas array
1648      */
1649     p_buffer->i_areas = 0;
1650 }
1651
1652 /*****************************************************************************
1653  * RenderPicture: render a picture
1654  *****************************************************************************
1655  * This function converts a picture from a video heap to a pixel-encoded image
1656  * and copies it to the current rendering buffer. No lock is required, since
1657  * the * rendered picture has been determined as existant, and will only be
1658  * destroyed by the vout thread later.
1659  *****************************************************************************/
1660 static void RenderPicture( vout_thread_t *p_vout, picture_t *p_pic )
1661 {
1662 #ifdef DEBUG_VOUT
1663     char                psz_date[MSTRTIME_MAX_SIZE];         /* picture date */
1664     mtime_t             render_time;               /* picture rendering time */
1665 #endif
1666     vout_buffer_t *     p_buffer;                        /* rendering buffer */
1667     byte_t *            p_pic_data;                /* convertion destination */
1668
1669     /* Get and set rendering information */
1670     p_buffer =          &p_vout->p_buffer[ p_vout->i_buffer_index ];
1671     p_pic_data =        p_buffer->p_data +
1672                         p_buffer->i_pic_x * p_vout->i_bytes_per_pixel +
1673                         p_buffer->i_pic_y * p_vout->i_bytes_per_line;
1674 #ifdef DEBUG_VOUT
1675     render_time = mdate();
1676 #endif
1677
1678
1679
1680     /*
1681      * Choose appropriate rendering function and render picture
1682      */
1683     switch( p_pic->i_type )
1684     {
1685     case YUV_420_PICTURE:
1686         p_vout->yuv.p_Convert420( p_vout, p_pic_data,
1687                                   p_pic->p_y, p_pic->p_u, p_pic->p_v,
1688                                   p_pic->i_width, p_pic->i_height,
1689                                   p_buffer->i_pic_width, p_buffer->i_pic_height,
1690                                   p_vout->i_bytes_per_line / p_vout->i_bytes_per_pixel,
1691                                   p_pic->i_matrix_coefficients );
1692         break;
1693     case YUV_422_PICTURE:
1694         p_vout->yuv.p_Convert422( p_vout, p_pic_data,
1695                                   p_pic->p_y, p_pic->p_u, p_pic->p_v,
1696                                   p_pic->i_width, p_pic->i_height,
1697                                   p_buffer->i_pic_width, p_buffer->i_pic_height,
1698                                   p_vout->i_bytes_per_line / p_vout->i_bytes_per_pixel,
1699                                   p_pic->i_matrix_coefficients );
1700         break;
1701     case YUV_444_PICTURE:
1702         p_vout->yuv.p_Convert444( p_vout, p_pic_data,
1703                                   p_pic->p_y, p_pic->p_u, p_pic->p_v,
1704                                   p_pic->i_width, p_pic->i_height,
1705                                   p_buffer->i_pic_width, p_buffer->i_pic_height,
1706                                   p_vout->i_bytes_per_line / p_vout->i_bytes_per_pixel,
1707                                   p_pic->i_matrix_coefficients );
1708         break;
1709 #ifdef DEBUG
1710     default:
1711         intf_DbgMsg("error: unknown picture type %d\n", p_pic->i_type );
1712         break;
1713 #endif
1714     }
1715
1716 #ifdef DEBUG_VOUT
1717     /* Print picture date and rendering time */
1718     intf_DbgMsg("picture %p rendered in buffer %d (%ld us), display date: %s\n", p_pic,
1719                 p_vout->i_buffer_index, (long) (mdate() - render_time),
1720                 mstrtime( psz_date, p_pic->date ));
1721 #endif
1722 }
1723
1724 /*****************************************************************************
1725  * RenderPictureInfo: print additionnal information on a picture
1726  *****************************************************************************
1727  * This function will print information such as fps and other picture
1728  * dependant information.
1729  *****************************************************************************/
1730 static void RenderPictureInfo( vout_thread_t *p_vout, picture_t *p_pic )
1731 {
1732     char        psz_buffer[256];                            /* string buffer */
1733
1734     /*
1735      * Print FPS rate in upper right corner
1736      */
1737     if( p_vout->c_fps_samples > VOUT_FPS_SAMPLES )
1738     {
1739         long i_fps = VOUT_FPS_SAMPLES * 1000000 * 10 /
1740                            ( p_vout->p_fps_sample[ (p_vout->c_fps_samples - 1)
1741                                                    % VOUT_FPS_SAMPLES ] -
1742                              p_vout->p_fps_sample[ p_vout->c_fps_samples
1743                                                    % VOUT_FPS_SAMPLES ] );
1744         sprintf( psz_buffer, "%li.%i fps", i_fps / 10, (int)i_fps % 10 );
1745         Print( p_vout, 0, 0, RIGHT_RALIGN, TOP_RALIGN, psz_buffer );
1746     }
1747
1748     /*
1749      * Print frames count and loop time in upper left corner
1750      */
1751     sprintf( psz_buffer, "%ld frames, render: %ldus",
1752              (long) p_vout->c_fps_samples, (long) p_vout->render_time );
1753     Print( p_vout, 0, 0, LEFT_RALIGN, TOP_RALIGN, psz_buffer );
1754
1755 #ifdef STATS
1756     /*
1757      * Print picture information in lower right corner
1758      */
1759     sprintf( psz_buffer, "%s picture %dx%d (%dx%d%+d%+d %s) -> %dx%d+%d+%d",
1760              (p_pic->i_type == YUV_420_PICTURE) ? "4:2:0" :
1761              ((p_pic->i_type == YUV_422_PICTURE) ? "4:2:2" :
1762               ((p_pic->i_type == YUV_444_PICTURE) ? "4:4:4" : "ukn-type")),
1763              p_pic->i_width, p_pic->i_height,
1764              p_pic->i_display_width, p_pic->i_display_height,
1765              p_pic->i_display_horizontal_offset, p_pic->i_display_vertical_offset,
1766              (p_pic->i_aspect_ratio == AR_SQUARE_PICTURE) ? "sq" :
1767              ((p_pic->i_aspect_ratio == AR_3_4_PICTURE) ? "4:3" :
1768               ((p_pic->i_aspect_ratio == AR_16_9_PICTURE) ? "16:9" :
1769                ((p_pic->i_aspect_ratio == AR_221_1_PICTURE) ? "2.21:1" : "ukn-ar" ))),
1770              p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_width,
1771              p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_height,
1772              p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_x,
1773              p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_y );
1774     Print( p_vout, 0, 0, RIGHT_RALIGN, BOTTOM_RALIGN, psz_buffer );
1775 #endif
1776 }
1777
1778 /*****************************************************************************
1779  * RenderSplash: render splash picture
1780  *****************************************************************************
1781  * This function will print something on the screen. It will return 0 if
1782  * nothing has been rendered, or 1 if something has been changed on the screen.
1783  * Note that if you absolutely want something to be printed, you will have
1784  * to force it by setting the last idle date to 0.
1785  * Unlike other rendering functions, this one calls the SetBufferPicture
1786  * function when needed.
1787  *****************************************************************************/
1788 int RenderSplash( vout_thread_t *p_vout )
1789 {
1790     int         i_x = 0, i_y = 0;                           /* text position */
1791     int         i_width, i_height;                              /* text size */
1792     char *psz_text =    "VideoLAN Client (" VERSION ")";  /* text to display */
1793
1794     memset( p_vout->p_buffer[ p_vout->i_buffer_index ].p_data,
1795                   p_vout->i_bytes_per_line * p_vout->i_height, 12);
1796
1797  //   SetBufferPicture( p_vout, NULL );
1798     vout_TextSize( p_vout->p_large_font, WIDE_TEXT | OUTLINED_TEXT, psz_text,
1799                    &i_width, &i_height );
1800     if( !Align( p_vout, &i_x, &i_y, i_width, i_height, CENTER_RALIGN, CENTER_RALIGN ) )
1801     {
1802         vout_Print( p_vout->p_large_font,
1803                     p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1804                     i_x * p_vout->i_bytes_per_pixel + (i_y - 16 ) * p_vout->i_bytes_per_line,
1805                     p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1806                     p_vout->i_white_pixel, p_vout->i_gray_pixel, 0,
1807                     WIDE_TEXT | OUTLINED_TEXT, psz_text, 100);
1808         SetBufferArea( p_vout, i_x, i_y, i_width, i_height);
1809     }
1810     return( 1 );
1811 }
1812
1813
1814 /*****************************************************************************
1815  * RenderIdle: render idle picture
1816  *****************************************************************************
1817  * This function will print something on the screen. It will return 0 if
1818  * nothing has been rendered, or 1 if something has been changed on the screen.
1819  * Note that if you absolutely want something to be printed, you will have
1820  * to force it by setting the last idle date to 0.
1821  * Unlike other rendering functions, this one calls the SetBufferPicture
1822  * function when needed.
1823  *****************************************************************************/
1824 int RenderIdle( vout_thread_t *p_vout )
1825 {
1826     int         i_x = 0, i_y = 0;                           /* text position */
1827     int         i_width, i_height;                              /* text size */
1828     mtime_t     current_date;                                /* current date */
1829     int         i_amount = 0;                             /*  amount to draw */
1830     char *psz_text =    "Waiting for stream";            /* text to display */
1831     char *psz_wtext =   "[................]";
1832
1833
1834     memset( p_vout->p_buffer[ p_vout->i_buffer_index ].p_data,
1835                     p_vout->i_bytes_per_line * p_vout->i_height, 12);
1836
1837
1838     current_date = mdate();
1839     if( (current_date - p_vout->last_display_date) > VOUT_IDLE_DELAY
1840 //            && (current_date - p_vout->last_idle_date) > VOUT_IDLE_DELAY
1841     )
1842     {
1843         SetBufferPicture( p_vout, NULL );
1844         vout_TextSize( p_vout->p_large_font, WIDE_TEXT | OUTLINED_TEXT, psz_text,
1845                        &i_width, &i_height );
1846         if( !Align( p_vout, &i_x, &i_y, i_width, i_height * 2, CENTER_RALIGN, CENTER_RALIGN ) )
1847         {
1848             i_amount = (int) ((current_date - p_vout->last_display_date ) / 5000LL);
1849             vout_Print( p_vout->p_large_font,
1850                         p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1851                         i_x * p_vout->i_bytes_per_pixel + i_y * p_vout->i_bytes_per_line,
1852                         p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1853                         p_vout->i_white_pixel, p_vout->i_gray_pixel, 0,
1854                         WIDE_TEXT | OUTLINED_TEXT, psz_text,  (i_amount / 3 ) %110);
1855
1856             vout_Print( p_vout->p_large_font,
1857                     p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1858                     i_x * p_vout->i_bytes_per_pixel + (i_y + 16) * p_vout->i_bytes_per_line,
1859                     p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1860                     p_vout->i_white_pixel, p_vout->i_gray_pixel, 0,
1861                     WIDE_TEXT | OUTLINED_TEXT, psz_wtext,  (i_amount/5)%110 );
1862
1863
1864             SetBufferArea( p_vout, i_x, i_y, i_width, i_height * 2 );
1865         }
1866         return( 1 );
1867     }
1868     return( 0 );
1869 }
1870
1871 /*****************************************************************************
1872  * RenderInfo: render additionnal information
1873  *****************************************************************************
1874  * This function renders information which do not depend on the current
1875  * picture rendered.
1876  *****************************************************************************/
1877 static void RenderInfo( vout_thread_t *p_vout )
1878 {
1879 #ifdef DEBUG
1880     char        psz_buffer[256];                            /* string buffer */
1881     int         i_ready_pic = 0;                           /* ready pictures */
1882     int         i_reserved_pic = 0;                     /* reserved pictures */
1883     int         i_picture;                                  /* picture index */
1884 #endif
1885
1886 #ifdef DEBUG
1887     /*
1888      * Print thread state in lower left corner
1889      */
1890     for( i_picture = 0; i_picture < VOUT_MAX_PICTURES; i_picture++ )
1891     {
1892         switch( p_vout->p_picture[i_picture].i_status )
1893         {
1894         case RESERVED_PICTURE:
1895         case RESERVED_DATED_PICTURE:
1896         case RESERVED_DISP_PICTURE:
1897             i_reserved_pic++;
1898             break;
1899         case READY_PICTURE:
1900             i_ready_pic++;
1901             break;
1902         }
1903     }
1904     sprintf( psz_buffer, "pic: %d (%d/%d)/%d",
1905              p_vout->i_pictures, i_reserved_pic, i_ready_pic, VOUT_MAX_PICTURES );
1906     Print( p_vout, 0, 0, LEFT_RALIGN, BOTTOM_RALIGN, psz_buffer );
1907 #endif
1908 }
1909
1910 /*****************************************************************************
1911  * RenderSubPicture: render a subpicture
1912  *****************************************************************************
1913  * This function renders a sub picture unit.
1914  *****************************************************************************/
1915 static void RenderSubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
1916 {
1917     p_vout_font_t       p_font;                                 /* text font */
1918     int                 i_width, i_height;          /* subpicture dimensions */
1919
1920     while( p_subpic != NULL )
1921     {
1922         switch( p_subpic->i_type )
1923         {
1924         case DVD_SUBPICTURE:                          /* DVD subpicture unit */
1925             /* test if the picture really has to be displayed */
1926             if( mdate() < p_subpic->begin_date )
1927             {
1928                 /* not yet, see you later */
1929                 break;
1930             }
1931             if( mdate() > p_subpic->end_date )
1932             {
1933                 /* too late, destroying the subpic */
1934                 vout_DestroySubPicture( p_vout, p_subpic );
1935                 break;
1936             }
1937             vout_RenderSPU( &p_vout->p_buffer[ p_vout->i_buffer_index ],
1938                             p_subpic, p_vout->i_bytes_per_pixel,
1939                             p_vout->i_bytes_per_line );
1940             break;
1941         case TEXT_SUBPICTURE:                            /* single line text */
1942             /* Select default font if not specified */
1943             p_font = p_subpic->type.text.p_font;
1944             if( p_font == NULL )
1945             {
1946                 p_font = p_vout->p_default_font;
1947             }
1948
1949             /* Compute text size (width and height fields are ignored)
1950              * and print it */
1951             vout_TextSize( p_font, p_subpic->type.text.i_style,
1952                            p_subpic->p_data, &i_width, &i_height );
1953             if( !Align( p_vout, &p_subpic->i_x, &p_subpic->i_y,
1954                         i_width, i_height, p_subpic->i_horizontal_align,
1955                         p_subpic->i_vertical_align ) )
1956             {
1957                 vout_Print( p_font,
1958                             p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1959                             p_subpic->i_x * p_vout->i_bytes_per_pixel +
1960                             p_subpic->i_y * p_vout->i_bytes_per_line,
1961                             p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1962                             p_subpic->type.text.i_char_color,
1963                             p_subpic->type.text.i_border_color,
1964                             p_subpic->type.text.i_bg_color,
1965                             p_subpic->type.text.i_style, p_subpic->p_data, 100 );
1966                 SetBufferArea( p_vout, p_subpic->i_x, p_subpic->i_y,
1967                                i_width, i_height );
1968             }
1969             break;
1970
1971 #ifdef DEBUG
1972         default:
1973             intf_DbgMsg( "error: unknown subpicture %p type %d\n",
1974                          p_subpic, p_subpic->i_type );
1975 #endif
1976         }
1977
1978         p_subpic = p_subpic->p_next;
1979     }
1980 }
1981
1982 /*****************************************************************************
1983  * RenderInterface: render the interface
1984  *****************************************************************************
1985  * This function renders the interface, if any.
1986  *****************************************************************************/
1987 static void RenderInterface( vout_thread_t *p_vout )
1988 {
1989     int         i_height, i_text_height;            /* total and text height */
1990     int         i_width_1, i_width_2;                          /* text width */
1991     int         i_byte;                                        /* byte index */
1992     const char *psz_text_1 = "[1-9] Channel   [i]nfo   [c]olor     [g/G]amma";
1993     const char *psz_text_2 = "[+/-] Volume    [m]ute   [s]caling   [Q]uit";
1994
1995     /* Get text size */
1996     vout_TextSize( p_vout->p_large_font, OUTLINED_TEXT, psz_text_1, &i_width_1, &i_height );
1997     vout_TextSize( p_vout->p_large_font, OUTLINED_TEXT, psz_text_2, &i_width_2, &i_text_height );
1998     i_height += i_text_height;
1999
2000     /* Render background */
2001     for( i_byte = (p_vout->i_height - i_height) * p_vout->i_bytes_per_line;
2002          i_byte < p_vout->i_height * p_vout->i_bytes_per_line;
2003          i_byte++ )
2004     {
2005         /* XXX?? noooo ! */
2006         p_vout->p_buffer[ p_vout->i_buffer_index ].p_data[ i_byte ] = p_vout->i_blue_pixel;
2007     }
2008
2009     /* Render text, if not larger than screen */
2010     if( i_width_1 < p_vout->i_width )
2011     {
2012         vout_Print( p_vout->p_large_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
2013                     (p_vout->i_height - i_height) * p_vout->i_bytes_per_line,
2014                     p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
2015                     p_vout->i_white_pixel, p_vout->i_black_pixel, 0,
2016                     OUTLINED_TEXT, psz_text_1, 100 );
2017     }
2018     if( i_width_2 < p_vout->i_width )
2019     {
2020         vout_Print( p_vout->p_large_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
2021                     (p_vout->i_height - i_height + i_text_height) * p_vout->i_bytes_per_line,
2022                     p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
2023                     p_vout->i_white_pixel, p_vout->i_black_pixel, 0,
2024                     OUTLINED_TEXT, psz_text_2, 100 );
2025     }
2026
2027     /* Activate modified area */
2028     SetBufferArea( p_vout, 0, p_vout->i_height - i_height, p_vout->i_width, i_height );
2029 }
2030
2031 /*****************************************************************************
2032  * Manage: manage thread
2033  *****************************************************************************
2034  * This function will handle changes in thread configuration.
2035  *****************************************************************************/
2036 static int Manage( vout_thread_t *p_vout )
2037 {
2038 #ifdef DEBUG_VOUT
2039     if( p_vout->i_changes )
2040     {
2041         intf_DbgMsg("changes: 0x%x (no display: 0x%x)\n", p_vout->i_changes,
2042                     0 /* p_vout->i_changes & VOUT_NODISPLAY_CHANGE */ );
2043     }
2044 #endif
2045
2046     /* On gamma or grayscale change, rebuild tables */
2047     if( p_vout->i_changes & (VOUT_GAMMA_CHANGE | VOUT_GRAYSCALE_CHANGE |
2048                              VOUT_YUV_CHANGE) )
2049     {
2050         /* Change vdec_DecodeMacroblock when switching between BW and C */
2051         if( !p_vout->b_grayscale )
2052         {
2053             p_vout->vdec_DecodeMacroblock = vdec_DecodeMacroblockC;
2054         }
2055         else if( p_vout->b_grayscale)
2056         {
2057             p_vout->vdec_DecodeMacroblock = vdec_DecodeMacroblockBW;
2058         }
2059         if( vout_ResetYUV( p_vout ) )
2060         {
2061             intf_ErrMsg("error: can't rebuild convertion tables\n");
2062             return( 1 );
2063         }
2064     }
2065
2066     /* Clear changes flags which does not need management or have been
2067      * handled */
2068     p_vout->i_changes &= ~(VOUT_GAMMA_CHANGE | VOUT_GRAYSCALE_CHANGE |
2069                            VOUT_YUV_CHANGE   | VOUT_INFO_CHANGE |
2070                            VOUT_INTF_CHANGE  | VOUT_SCALE_CHANGE );
2071
2072     /* Detect unauthorized changes */
2073     if( p_vout->i_changes )
2074     {
2075         /* Some changes were not acknowledged by p_vout->p_sys_manage or this
2076          * function, it means they should not be authorized */
2077         intf_ErrMsg( "error: unauthorized changes in the video output thread\n" );
2078         return( 1 );
2079     }
2080
2081     return( 0 );
2082 }
2083
2084 /*****************************************************************************
2085  * Align: align a subpicture in the screen
2086  *****************************************************************************
2087  * This function is used for rendering text or subpictures. It returns non 0
2088  * it the final aera is not fully included in display area. Return coordinates
2089  * are absolute.
2090  *****************************************************************************/
2091 static int Align( vout_thread_t *p_vout, int *pi_x, int *pi_y,
2092                    int i_width, int i_height, int i_h_align, int i_v_align )
2093 {
2094     /* Align horizontally */
2095     switch( i_h_align )
2096     {
2097     case CENTER_ALIGN:
2098         *pi_x -= i_width / 2;
2099         break;
2100     case CENTER_RALIGN:
2101         *pi_x += (p_vout->i_width - i_width) / 2;
2102         break;
2103     case RIGHT_ALIGN:
2104         *pi_x -= i_width;
2105         break;
2106     case RIGHT_RALIGN:
2107         *pi_x += p_vout->i_width - i_width;
2108         break;
2109     }
2110
2111     /* Align vertically */
2112     switch( i_v_align )
2113     {
2114     case CENTER_ALIGN:
2115         *pi_y -= i_height / 2;
2116         break;
2117     case CENTER_RALIGN:
2118         *pi_y += (p_vout->i_height - i_height) / 2;
2119         break;
2120     case BOTTOM_ALIGN:
2121         *pi_y -= i_height;
2122         break;
2123     case BOTTOM_RALIGN:
2124         *pi_y += p_vout->i_height - i_height;
2125         break;
2126     case SUBTITLE_RALIGN:
2127         *pi_y += (p_vout->i_height + p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_y +
2128                   p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_height - i_height) / 2;
2129         break;
2130     }
2131
2132     /* Return non 0 if clipping failed */
2133     return( (*pi_x < 0) || (*pi_y < 0) ||
2134             (*pi_x + i_width > p_vout->i_width) || (*pi_y + i_height > p_vout->i_height) );
2135 }
2136
2137 /*****************************************************************************
2138  * SetPalette: sets an 8 bpp palette
2139  *****************************************************************************
2140  * This function is just a prototype that does nothing. Architectures that
2141  * support palette allocation should override it.
2142  *****************************************************************************/
2143 static void     SetPalette        ( p_vout_thread_t p_vout, u16 *red,
2144                                     u16 *green, u16 *blue, u16 *transp )
2145 {
2146     intf_ErrMsg( "SetPalette: method does not support palette changing\n" );
2147 }
2148