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

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