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 #include "config.h"
  37 #include "common.h"
  38 #include "threads.h"
  39 #include "mtime.h"
  40 #include "plugins.h"
  41 #include "video.h"
  42 #include "video_output.h"
  43 #include "video_text.h"
  44 #include "video_spu.h"
  45 #include "video_yuv.h"
  46
  47 #include "intf_msg.h"
  48 #include "main.h"
  49
  50 /*****************************************************************************
  51  * Local prototypes
  52  *****************************************************************************/
  53 static int      BinaryLog         ( u32 i );
  54 static void     MaskToShift       ( int *pi_left, int *pi_right, u32 i_mask );
  55 static int      InitThread        ( vout_thread_t *p_vout );
  56 static void     RunThread         ( vout_thread_t *p_vout );
  57 static void     ErrorThread       ( vout_thread_t *p_vout );
  58 static void     EndThread         ( vout_thread_t *p_vout );
  59 static void     DestroyThread     ( vout_thread_t *p_vout, int i_status );
  60 static void     Print             ( vout_thread_t *p_vout, int i_x, int i_y,
  61                                     int i_h_align, int i_v_align,
  62                                     unsigned char *psz_text );
  63 static void     SetBufferArea     ( vout_thread_t *p_vout, int i_x, int i_y,
  64                                     int i_w, int i_h );
  65 static void     SetBufferPicture  ( vout_thread_t *p_vout, picture_t *p_pic );
  66 static void     RenderPicture     ( vout_thread_t *p_vout, picture_t *p_pic );
  67 static void     RenderPictureInfo ( vout_thread_t *p_vout, picture_t *p_pic );
  68 static void     RenderSubPicture  ( vout_thread_t *p_vout,
  69                                     subpicture_t *p_subpic );
  70 static void     RenderInterface   ( vout_thread_t *p_vout );
  71 static int      RenderIdle        ( vout_thread_t *p_vout );
  72 static int      RenderSplash( vout_thread_t *p_vout );
  73 static void     RenderInfo        ( vout_thread_t *p_vout );
  74 static void     Synchronize       ( vout_thread_t *p_vout, s64 i_delay );
  75 static int      Manage            ( vout_thread_t *p_vout );
  76 static int      Align             ( vout_thread_t *p_vout, int *pi_x,
  77                                     int *pi_y, int i_width, int i_height,
  78                                     int i_h_align, int i_v_align );
  79 static void     SetPalette        ( p_vout_thread_t p_vout, u16 *red,
  80                                     u16 *green, u16 *blue, u16 *transp );
  81
  82 /*****************************************************************************
  83  * vout_CreateThread: creates a new video output thread
  84  *****************************************************************************
  85  * This function creates a new video output thread, and returns a pointer
  86  * to its description. On error, it returns NULL.
  87  * If pi_status is NULL, then the function will block until the thread is ready.
  88  * If not, it will be updated using one of the THREAD_* constants.
  89  *****************************************************************************/
  90 vout_thread_t * vout_CreateThread   ( char *psz_display, int i_root_window,
  91                           int i_width, int i_height, int *pi_status,
  92                           int i_method, void *p_data )
  93 {
  94     vout_thread_t * p_vout;                             /* thread descriptor */
  95     typedef void    ( vout_getplugin_t ) ( vout_thread_t * p_vout );
  96     int             i_status;                               /* thread status */
  97     int             i_index;               /* index for array initialization */
  98     int             i_best_index = 0, i_best_score = 0;
  99
 100     /* Allocate descriptor */
 101     intf_DbgMsg("\n");
 102     p_vout = (vout_thread_t *) malloc( sizeof(vout_thread_t) );
 103     if( p_vout == NULL )
 104     {
 105         intf_ErrMsg( "error: %s\n", strerror(ENOMEM) );
 106         return( NULL );
 107     }
 108
 109     p_vout->p_set_palette       = SetPalette;
 110
 111     /* Get a suitable video plugin */
 112     for( i_index = 0 ; i_index < p_main->p_bank->i_plugin_count ; i_index++ )
 113     {
 114         /* If there's a plugin in p_info ... */
 115         if( p_main->p_bank->p_info[ i_index ] != NULL )
 116         {
 117             /* ... and if this plugin provides the functions we want ... */
 118             if( p_main->p_bank->p_info[ i_index ]->vout_GetPlugin != NULL )
 119             {
 120                 /* ... and if this plugin has a good score ... */
 121                 if( p_main->p_bank->p_info[ i_index ]->i_score > i_best_score )
 122                 {
 123                     /* ... then take it */
 124                     i_best_score = p_main->p_bank->p_info[ i_index ]->i_score;
 125                     i_best_index = i_index;
 126                 }
 127             }
 128         }
 129     }
 130
 131     if( i_best_score == 0 )
 132     {
 133         free( p_vout );
 134         return( NULL );
 135     }
 136
 137     /* Get the plugin functions */
 138     ( (vout_getplugin_t *)
 139       p_main->p_bank->p_info[ i_best_index ]->vout_GetPlugin )( p_vout );
 140
 141     /* Initialize thread properties - thread id and locks will be initialized
 142      * later */
 143     p_vout->b_die               = 0;
 144     p_vout->b_error             = 0;
 145     p_vout->b_active            = 0;
 146     p_vout->pi_status           = (pi_status != NULL) ? pi_status : &i_status;
 147     *p_vout->pi_status          = THREAD_CREATE;
 148
 149     /* Initialize some fields used by the system-dependant method - these
 150      * fields will probably be modified by the method, and are only
 151      * preferences */
 152     p_vout->i_changes           = 0;
 153     p_vout->i_width             = i_width;
 154     p_vout->i_height            = i_height;
 155     p_vout->i_bytes_per_line    = i_width * 2;
 156     p_vout->i_screen_depth      = 15;
 157     p_vout->i_bytes_per_pixel   = 2;
 158     p_vout->f_gamma             = VOUT_GAMMA;
 159
 160     p_vout->b_grayscale         = main_GetIntVariable( VOUT_GRAYSCALE_VAR,
 161                                                        VOUT_GRAYSCALE_DEFAULT );
 162     p_vout->b_info              = 0;
 163     p_vout->b_interface         = 0;
 164     p_vout->b_scale             = 1;
 165
 166     intf_DbgMsg( "wished configuration: %dx%d, %d/%d bpp (%d Bpl)\n",
 167                  p_vout->i_width, p_vout->i_height, p_vout->i_screen_depth,
 168                  p_vout->i_bytes_per_pixel * 8, p_vout->i_bytes_per_line );
 169
 170     /* Initialize idle screen */
 171     p_vout->last_display_date   = 0;
 172     p_vout->last_idle_date      = 0;
 173     p_vout->init_display_date   = mdate();
 174
 175 #ifdef STATS
 176     /* Initialize statistics fields */
 177     p_vout->render_time         = 0;
 178     p_vout->c_fps_samples       = 0;
 179 #endif
 180
 181     /* Initialize buffer index */
 182     p_vout->i_buffer_index      = 0;
 183
 184     /* Initialize pictures and subpictures - translation tables and functions
 185      * will be initialized later in InitThread */
 186     for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++)
 187     {
 188         p_vout->p_picture[i_index].i_type   =   EMPTY_PICTURE;
 189         p_vout->p_picture[i_index].i_status =   FREE_PICTURE;
 190     }
 191     for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++)
 192     {
 193         p_vout->p_subpicture[i_index].i_type  = EMPTY_SUBPICTURE;
 194         p_vout->p_subpicture[i_index].i_status= FREE_SUBPICTURE;
 195     }
 196     p_vout->i_pictures = 0;
 197
 198     /* Initialize synchronization information */
 199     p_vout->i_synchro_level     = VOUT_SYNCHRO_LEVEL_START;
 200
 201     /* Create and initialize system-dependant method - this function issues its
 202      * own error messages */
 203     if( p_vout->p_sys_create( p_vout, psz_display, i_root_window, p_data ) )
 204     {
 205         free( p_vout );
 206         return( NULL );
 207     }
 208     intf_DbgMsg( "actual configuration: %dx%d, %d/%d bpp (%d Bpl), "
 209                  "masks: 0x%x/0x%x/0x%x\n",
 210                  p_vout->i_width, p_vout->i_height, p_vout->i_screen_depth,
 211                  p_vout->i_bytes_per_pixel * 8, p_vout->i_bytes_per_line,
 212                  p_vout->i_red_mask, p_vout->i_green_mask,
 213                  p_vout->i_blue_mask );
 214
 215     /* Calculate shifts from system-updated masks */
 216     MaskToShift( &p_vout->i_red_lshift, &p_vout->i_red_rshift,
 217                  p_vout->i_red_mask );
 218     MaskToShift( &p_vout->i_green_lshift, &p_vout->i_green_rshift,
 219                  p_vout->i_green_mask );
 220     MaskToShift( &p_vout->i_blue_lshift, &p_vout->i_blue_rshift,
 221                  p_vout->i_blue_mask );
 222
 223     /* Set some useful colors */
 224     p_vout->i_white_pixel = RGB2PIXEL( p_vout, 255, 255, 255 );
 225     p_vout->i_black_pixel = RGB2PIXEL( p_vout, 0, 0, 0 );
 226     p_vout->i_gray_pixel  = RGB2PIXEL( p_vout, 128, 128, 128 );
 227     p_vout->i_blue_pixel  = RGB2PIXEL( p_vout, 0, 0, 50 );
 228
 229     /* Load fonts - fonts must be initialized after the system method since
 230      * they may be dependant on screen depth and other thread properties */
 231     p_vout->p_default_font = vout_LoadFont( DATA_PATH "/" VOUT_DEFAULT_FONT );
 232     if( p_vout->p_default_font == NULL )
 233     {
 234         p_vout->p_default_font = vout_LoadFont( "share/" VOUT_DEFAULT_FONT );
 235     }
 236     if( p_vout->p_default_font == NULL )
 237     {
 238         intf_ErrMsg( "vout error: could not load default font\n" );
 239         p_vout->p_sys_destroy( p_vout );
 240         free( p_vout );
 241         return( NULL );
 242     }
 243     p_vout->p_large_font = vout_LoadFont( DATA_PATH "/" VOUT_LARGE_FONT );
 244     if( p_vout->p_large_font == NULL )
 245     {
 246         p_vout->p_large_font = vout_LoadFont( "share/" VOUT_LARGE_FONT );
 247     }
 248     if( p_vout->p_large_font == NULL )
 249     {
 250         intf_ErrMsg( "vout error: could not load large font\n" );
 251         vout_UnloadFont( p_vout->p_default_font );
 252         p_vout->p_sys_destroy( p_vout );
 253         free( p_vout );
 254         return( NULL );
 255     }
 256
 257     /* Create thread and set locks */
 258     vlc_mutex_init( &p_vout->picture_lock );
 259     vlc_mutex_init( &p_vout->subpicture_lock );
 260     vlc_mutex_init( &p_vout->change_lock );
 261     vlc_mutex_lock( &p_vout->change_lock );
 262     if( vlc_thread_create( &p_vout->thread_id, "video output",
 263                            (void *) RunThread, (void *) p_vout) )
 264     {
 265         intf_ErrMsg("error: %s\n", strerror(ENOMEM));
 266         vout_UnloadFont( p_vout->p_default_font );
 267         vout_UnloadFont( p_vout->p_large_font );
 268         p_vout->p_sys_destroy( p_vout );
 269         free( p_vout );
 270         return( NULL );
 271     }
 272
 273     intf_Msg( "Video display initialized (%dx%d, %d/%d bpp)\n", p_vout->i_width,
 274               p_vout->i_height, p_vout->i_screen_depth,
 275               p_vout->i_bytes_per_pixel * 8 );
 276
 277     /* If status is NULL, wait until the thread is created */
 278     if( pi_status == NULL )
 279     {
 280         do
 281         {
 282             msleep( THREAD_SLEEP );
 283         }while( (i_status != THREAD_READY) && (i_status != THREAD_ERROR)
 284                 && (i_status != THREAD_FATAL) );
 285         if( i_status != THREAD_READY )
 286         {
 287             return( NULL );
 288         }
 289     }
 290     return( p_vout );
 291 }
 292
 293 /*****************************************************************************
 294  * vout_DestroyThread: destroys a previously created thread
 295  *****************************************************************************
 296  * Destroy a terminated thread.
 297  * The function will request a destruction of the specified thread. If pi_error
 298  * is NULL, it will return once the thread is destroyed. Else, it will be
 299  * update using one of the THREAD_* constants.
 300  *****************************************************************************/
 301 void vout_DestroyThread( vout_thread_t *p_vout, int *pi_status )
 302 {
 303     int     i_status;                                       /* thread status */
 304
 305     /* Set status */
 306     intf_DbgMsg("\n");
 307     p_vout->pi_status = (pi_status != NULL) ? pi_status : &i_status;
 308     *p_vout->pi_status = THREAD_DESTROY;
 309
 310     /* Request thread destruction */
 311     p_vout->b_die = 1;
 312
 313     /* If status is NULL, wait until thread has been destroyed */
 314     if( pi_status == NULL )
 315     {
 316         do
 317         {
 318             msleep( THREAD_SLEEP );
 319         }while( (i_status != THREAD_OVER) && (i_status != THREAD_ERROR)
 320                 && (i_status != THREAD_FATAL) );
 321     }
 322 }
 323
 324 /*****************************************************************************
 325  * vout_DisplaySubPicture: display a subpicture unit
 326  *****************************************************************************
 327  * Remove the reservation flag of an subpicture, which will cause it to be ready
 328  * for display. The picture does not need to be locked, since it is ignored by
 329  * the output thread if is reserved.
 330  *****************************************************************************/
 331 void  vout_DisplaySubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
 332 {
 333 #ifdef DEBUG_VIDEO
 334     char        psz_begin_date[MSTRTIME_MAX_SIZE]; /* buffer for date string */
 335     char        psz_end_date[MSTRTIME_MAX_SIZE];   /* buffer for date string */
 336 #endif
 337
 338 #ifdef DEBUG
 339     /* Check if status is valid */
 340     if( p_subpic->i_status != RESERVED_SUBPICTURE )
 341     {
 342         intf_DbgMsg("error: subpicture %p has invalid status %d\n", p_subpic,
 343                     p_subpic->i_status );
 344     }
 345 #endif
 346
 347     /* Remove reservation flag */
 348     p_subpic->i_status = READY_SUBPICTURE;
 349
 350 #ifdef DEBUG_VIDEO
 351     /* Send subpicture information */
 352     intf_DbgMsg("subpicture %p: type=%d, begin date=%s, end date=%s\n",
 353                 p_subpic, p_subpic->i_type,
 354                 mstrtime( psz_begin_date, p_subpic->begin_date ),
 355                 mstrtime( psz_end_date, p_subpic->end_date ) );
 356 #endif
 357 }
 358
 359 /*****************************************************************************
 360  * vout_CreateSubPicture: allocate a subpicture in the video output heap.
 361  *****************************************************************************
 362  * This function create a reserved subpicture in the video output heap.
 363  * A null pointer is returned if the function fails. This method provides an
 364  * already allocated zone of memory in the spu data fields. It needs locking
 365  * since several pictures can be created by several producers threads.
 366  *****************************************************************************/
 367 subpicture_t *vout_CreateSubPicture( vout_thread_t *p_vout, int i_type,
 368                                      int i_size )
 369 {
 370     int                 i_subpic;                        /* subpicture index */
 371     subpicture_t *      p_free_subpic = NULL;       /* first free subpicture */
 372     subpicture_t *      p_destroyed_subpic = NULL; /* first destroyed subpic */
 373
 374     /* Get lock */
 375     vlc_mutex_lock( &p_vout->subpicture_lock );
 376
 377     /*
 378      * Look for an empty place
 379      */
 380     for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
 381     {
 382         if( p_vout->p_subpicture[i_subpic].i_status == DESTROYED_SUBPICTURE )
 383         {
 384             /* Subpicture is marked for destruction, but is still allocated */
 385             if( (p_vout->p_subpicture[i_subpic].i_type  == i_type)   &&
 386                 (p_vout->p_subpicture[i_subpic].i_size  >= i_size) )
 387             {
 388                 /* Memory size do match or is smaller : memory will not be
 389                  * reallocated, and function can end immediately - this is
 390                  * the best possible case, since no memory allocation needs
 391                  * to be done */
 392                 p_vout->p_subpicture[i_subpic].i_status = RESERVED_SUBPICTURE;
 393 #ifdef DEBUG_VIDEO
 394                 intf_DbgMsg("subpicture %p (in destroyed subpicture slot)\n",
 395                             &p_vout->p_subpicture[i_subpic] );
 396 #endif
 397                 vlc_mutex_unlock( &p_vout->subpicture_lock );
 398                 return( &p_vout->p_subpicture[i_subpic] );
 399             }
 400             else if( p_destroyed_subpic == NULL )
 401             {
 402                 /* Memory size do not match, but subpicture index will be kept in
 403                  * case no other place are left */
 404                 p_destroyed_subpic = &p_vout->p_subpicture[i_subpic];
 405             }
 406         }
 407         else if( (p_free_subpic == NULL) &&
 408                  (p_vout->p_subpicture[i_subpic].i_status == FREE_SUBPICTURE ))
 409         {
 410             /* Subpicture is empty and ready for allocation */
 411             p_free_subpic = &p_vout->p_subpicture[i_subpic];
 412         }
 413     }
 414
 415     /* If no free subpictures are available, use a destroyed subpicture */
 416     if( (p_free_subpic == NULL) && (p_destroyed_subpic != NULL ) )
 417     {
 418         /* No free subpicture or matching destroyed subpictures have been
 419          * found, but a destroyed subpicture is still avalaible */
 420         free( p_destroyed_subpic->p_data );
 421         p_free_subpic = p_destroyed_subpic;
 422     }
 423
 424     /*
 425      * Prepare subpicture
 426      */
 427     if( p_free_subpic != NULL )
 428     {
 429         /* Allocate memory */
 430         switch( i_type )
 431         {
 432         case TEXT_SUBPICTURE:                             /* text subpicture */
 433             p_free_subpic->p_data = malloc( i_size + 1 );
 434             break;
 435         case DVD_SUBPICTURE:                          /* DVD subpicture unit */
 436             p_free_subpic->p_data = malloc( i_size );
 437             break;
 438 #ifdef DEBUG
 439         default:
 440             intf_DbgMsg("error: unknown subpicture type %d\n", i_type );
 441             p_free_subpic->p_data   =  NULL;
 442             break;
 443 #endif
 444         }
 445
 446         if( p_free_subpic->p_data != NULL )
 447         {
 448             /* Copy subpicture information, set some default values */
 449             p_free_subpic->i_type                      = i_type;
 450             p_free_subpic->i_status                    = RESERVED_SUBPICTURE;
 451             p_free_subpic->i_size                      = i_size;
 452             p_free_subpic->i_x                         = 0;
 453             p_free_subpic->i_y                         = 0;
 454             p_free_subpic->i_width                     = 0;
 455             p_free_subpic->i_height                    = 0;
 456             p_free_subpic->i_horizontal_align          = CENTER_RALIGN;
 457             p_free_subpic->i_vertical_align            = CENTER_RALIGN;
 458         }
 459         else
 460         {
 461             /* Memory allocation failed : set subpicture as empty */
 462             p_free_subpic->i_type   =  EMPTY_SUBPICTURE;
 463             p_free_subpic->i_status =  FREE_SUBPICTURE;
 464             p_free_subpic =            NULL;
 465             intf_ErrMsg("spu warning: %s\n", strerror( ENOMEM ) );
 466         }
 467
 468 #ifdef DEBUG_VIDEO
 469         intf_DbgMsg("subpicture %p (in free subpicture slot)\n", p_free_subpic );
 470 #endif
 471         vlc_mutex_unlock( &p_vout->subpicture_lock );
 472         return( p_free_subpic );
 473     }
 474
 475     /* No free or destroyed subpicture could be found */
 476     intf_DbgMsg( "warning: subpicture heap is full\n" );
 477     vlc_mutex_unlock( &p_vout->subpicture_lock );
 478     return( NULL );
 479 }
 480
 481 /*****************************************************************************
 482  * vout_DestroySubPicture: remove a subpicture from the heap
 483  *****************************************************************************
 484  * This function frees a previously reserved subpicture.
 485  * It is meant to be used when the construction of a picture aborted.
 486  * This function does not need locking since reserved subpictures are ignored
 487  * by the output thread.
 488  *****************************************************************************/
 489 void vout_DestroySubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
 490 {
 491 #ifdef DEBUG
 492    /* Check if status is valid */
 493    if( p_subpic->i_status != RESERVED_SUBPICTURE )
 494    {
 495        intf_DbgMsg("error: subpicture %p has invalid status %d\n",
 496                    p_subpic, p_subpic->i_status );
 497    }
 498 #endif
 499
 500     p_subpic->i_status = DESTROYED_SUBPICTURE;
 501
 502 #ifdef DEBUG_VIDEO
 503     intf_DbgMsg("subpicture %p\n", p_subpic);
 504 #endif
 505 }
 506
 507 /*****************************************************************************
 508  * vout_DisplayPicture: display a picture
 509  *****************************************************************************
 510  * Remove the reservation flag of a picture, which will cause it to be ready for
 511  * display. The picture won't be displayed until vout_DatePicture has been
 512  * called.
 513  *****************************************************************************/
 514 void  vout_DisplayPicture( vout_thread_t *p_vout, picture_t *p_pic )
 515 {
 516     vlc_mutex_lock( &p_vout->picture_lock );
 517     switch( p_pic->i_status )
 518     {
 519     case RESERVED_PICTURE:
 520         p_pic->i_status = RESERVED_DISP_PICTURE;
 521         break;
 522     case RESERVED_DATED_PICTURE:
 523         p_pic->i_status = READY_PICTURE;
 524         break;
 525 #ifdef DEBUG
 526     default:
 527         intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status );
 528         break;
 529 #endif
 530     }
 531
 532 #ifdef DEBUG_VIDEO
 533     intf_DbgMsg("picture %p\n", p_pic);
 534 #endif
 535     vlc_mutex_unlock( &p_vout->picture_lock );
 536 }
 537
 538 /*****************************************************************************
 539  * vout_DatePicture: date a picture
 540  *****************************************************************************
 541  * Remove the reservation flag of a picture, which will cause it to be ready for
 542  * display. The picture won't be displayed until vout_DisplayPicture has been
 543  * called.
 544  *****************************************************************************/
 545 void  vout_DatePicture( vout_thread_t *p_vout, picture_t *p_pic, mtime_t date )
 546 {
 547 #ifdef DEBUG_VIDEO
 548     char        psz_date[MSTRTIME_MAX_SIZE];                         /* date */
 549 #endif
 550
 551     vlc_mutex_lock( &p_vout->picture_lock );
 552     p_pic->date = date;
 553     switch( p_pic->i_status )
 554     {
 555     case RESERVED_PICTURE:
 556         p_pic->i_status = RESERVED_DATED_PICTURE;
 557         break;
 558     case RESERVED_DISP_PICTURE:
 559         p_pic->i_status = READY_PICTURE;
 560         break;
 561 #ifdef DEBUG
 562     default:
 563         intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status );
 564         break;
 565 #endif
 566     }
 567
 568 #ifdef DEBUG_VIDEO
 569     intf_DbgMsg("picture %p, display date: %s\n", p_pic, mstrtime( psz_date, p_pic->date) );
 570 #endif
 571     vlc_mutex_unlock( &p_vout->picture_lock );
 572 }
 573
 574 /*****************************************************************************
 575  * vout_CreatePicture: allocate a picture in the video output heap.
 576  *****************************************************************************
 577  * This function create a reserved image in the video output heap.
 578  * A null pointer is returned if the function fails. This method provides an
 579  * already allocated zone of memory in the picture data fields. It needs locking
 580  * since several pictures can be created by several producers threads.
 581  *****************************************************************************/
 582 picture_t *vout_CreatePicture( vout_thread_t *p_vout, int i_type,
 583                                int i_width, int i_height )
 584 {
 585     int         i_picture;                                  /* picture index */
 586     int         i_chroma_width = 0;                          /* chroma width */
 587     picture_t * p_free_picture = NULL;                 /* first free picture */
 588     picture_t * p_destroyed_picture = NULL;       /* first destroyed picture */
 589
 590     /* Get lock */
 591     vlc_mutex_lock( &p_vout->picture_lock );
 592
 593     /*
 594      * Look for an empty place
 595      */
 596     for( i_picture = 0; i_picture < VOUT_MAX_PICTURES; i_picture++ )
 597     {
 598         if( p_vout->p_picture[i_picture].i_status == DESTROYED_PICTURE )
 599         {
 600             /* Picture is marked for destruction, but is still allocated - note
 601              * that if width and type are the same for two pictures, chroma_width
 602              * should also be the same */
 603             if( (p_vout->p_picture[i_picture].i_type           == i_type)   &&
 604                 (p_vout->p_picture[i_picture].i_height         == i_height) &&
 605                 (p_vout->p_picture[i_picture].i_width          == i_width) )
 606             {
 607                 /* Memory size do match : memory will not be reallocated, and function
 608                  * can end immediately - this is the best possible case, since no
 609                  * memory allocation needs to be done */
 610                 p_vout->p_picture[i_picture].i_status = RESERVED_PICTURE;
 611                 p_vout->i_pictures++;
 612 #ifdef DEBUG_VIDEO
 613                 intf_DbgMsg("picture %p (in destroyed picture slot)\n",
 614                             &p_vout->p_picture[i_picture] );
 615 #endif
 616                 vlc_mutex_unlock( &p_vout->picture_lock );
 617                 return( &p_vout->p_picture[i_picture] );
 618             }
 619             else if( p_destroyed_picture == NULL )
 620             {
 621                 /* Memory size do not match, but picture index will be kept in
 622                  * case no other place are left */
 623                 p_destroyed_picture = &p_vout->p_picture[i_picture];
 624             }
 625         }
 626         else if( (p_free_picture == NULL) &&
 627                  (p_vout->p_picture[i_picture].i_status == FREE_PICTURE ))
 628         {
 629             /* Picture is empty and ready for allocation */
 630             p_free_picture = &p_vout->p_picture[i_picture];
 631         }
 632     }
 633
 634     /* If no free picture is available, use a destroyed picture */
 635     if( (p_free_picture == NULL) && (p_destroyed_picture != NULL ) )
 636     {
 637         /* No free picture or matching destroyed picture has been found, but
 638          * a destroyed picture is still avalaible */
 639         free( p_destroyed_picture->p_data );
 640         p_free_picture = p_destroyed_picture;
 641     }
 642
 643     /*
 644      * Prepare picture
 645      */
 646     if( p_free_picture != NULL )
 647     {
 648         /* Allocate memory */
 649         switch( i_type )
 650         {
 651         case YUV_420_PICTURE:        /* YUV 420: 1,1/4,1/4 samples per pixel */
 652             i_chroma_width = i_width / 2;
 653             p_free_picture->p_data = malloc( i_height * i_chroma_width * 3 * sizeof( yuv_data_t ) );
 654             p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
 655             p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*4/2;
 656             p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*5/2;
 657             break;
 658         case YUV_422_PICTURE:        /* YUV 422: 1,1/2,1/2 samples per pixel */
 659             i_chroma_width = i_width / 2;
 660             p_free_picture->p_data = malloc( i_height * i_chroma_width * 4 * sizeof( yuv_data_t ) );
 661             p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
 662             p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*2;
 663             p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*3;
 664             break;
 665         case YUV_444_PICTURE:            /* YUV 444: 1,1,1 samples per pixel */
 666             i_chroma_width = i_width;
 667             p_free_picture->p_data = malloc( i_height * i_chroma_width * 3 * sizeof( yuv_data_t ) );
 668             p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
 669             p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width;
 670             p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*2;
 671             break;
 672 #ifdef DEBUG
 673         default:
 674             intf_DbgMsg("error: unknown picture type %d\n", i_type );
 675             p_free_picture->p_data   =  NULL;
 676             break;
 677 #endif
 678         }
 679
 680         if( p_free_picture->p_data != NULL )
 681         {
 682             /* Copy picture information, set some default values */
 683             p_free_picture->i_type                      = i_type;
 684             p_free_picture->i_status                    = RESERVED_PICTURE;
 685             p_free_picture->i_matrix_coefficients       = 1;
 686             p_free_picture->i_width                     = i_width;
 687             p_free_picture->i_height                    = i_height;
 688             p_free_picture->i_chroma_width              = i_chroma_width;
 689             p_free_picture->i_display_horizontal_offset = 0;
 690             p_free_picture->i_display_vertical_offset   = 0;
 691             p_free_picture->i_display_width             = i_width;
 692             p_free_picture->i_display_height            = i_height;
 693             p_free_picture->i_aspect_ratio              = AR_SQUARE_PICTURE;
 694             p_free_picture->i_refcount                  = 0;
 695             p_vout->i_pictures++;
 696         }
 697         else
 698         {
 699             /* Memory allocation failed : set picture as empty */
 700             p_free_picture->i_type   =  EMPTY_PICTURE;
 701             p_free_picture->i_status =  FREE_PICTURE;
 702             p_free_picture =            NULL;
 703             intf_ErrMsg("vout warning: %s\n", strerror( ENOMEM ) );
 704         }
 705
 706 #ifdef DEBUG_VIDEO
 707         intf_DbgMsg("picture %p (in free picture slot)\n", p_free_picture );
 708 #endif
 709         vlc_mutex_unlock( &p_vout->picture_lock );
 710         return( p_free_picture );
 711     }
 712
 713     /* No free or destroyed picture could be found */
 714     intf_DbgMsg( "warning: picture heap is full\n" );
 715     vlc_mutex_unlock( &p_vout->picture_lock );
 716     return( NULL );
 717 }
 718
 719 /*****************************************************************************
 720  * vout_DestroyPicture: remove a permanent or reserved picture from the heap
 721  *****************************************************************************
 722  * This function frees a previously reserved picture or a permanent
 723  * picture. It is meant to be used when the construction of a picture aborted.
 724  * Note that the picture will be destroyed even if it is linked !
 725  *****************************************************************************/
 726 void vout_DestroyPicture( vout_thread_t *p_vout, picture_t *p_pic )
 727 {
 728    vlc_mutex_lock( &p_vout->picture_lock );
 729
 730 #ifdef DEBUG
 731    /* Check if picture status is valid */
 732    if( (p_pic->i_status != RESERVED_PICTURE) &&
 733        (p_pic->i_status != RESERVED_DATED_PICTURE) &&
 734        (p_pic->i_status != RESERVED_DISP_PICTURE) )
 735    {
 736        intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status );
 737    }
 738 #endif
 739
 740    p_pic->i_status = DESTROYED_PICTURE;
 741    p_vout->i_pictures--;
 742
 743 #ifdef DEBUG_VIDEO
 744    intf_DbgMsg("picture %p\n", p_pic);
 745 #endif
 746    vlc_mutex_unlock( &p_vout->picture_lock );
 747 }
 748
 749 /*****************************************************************************
 750  * vout_LinkPicture: increment reference counter of a picture
 751  *****************************************************************************
 752  * This function increment the reference counter of a picture in the video
 753  * heap. It needs a lock since several producer threads can access the picture.
 754  *****************************************************************************/
 755 void vout_LinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
 756 {
 757     vlc_mutex_lock( &p_vout->picture_lock );
 758     p_pic->i_refcount++;
 759
 760 #ifdef DEBUG_VIDEO
 761     intf_DbgMsg("picture %p refcount=%d\n", p_pic, p_pic->i_refcount );
 762 #endif
 763
 764     vlc_mutex_unlock( &p_vout->picture_lock );
 765 }
 766
 767 /*****************************************************************************
 768  * vout_UnlinkPicture: decrement reference counter of a picture
 769  *****************************************************************************
 770  * This function decrement the reference counter of a picture in the video heap.
 771  *****************************************************************************/
 772 void vout_UnlinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
 773 {
 774     vlc_mutex_lock( &p_vout->picture_lock );
 775     p_pic->i_refcount--;
 776
 777 #ifdef DEBUG_VIDEO
 778     if( p_pic->i_refcount < 0 )
 779     {
 780         intf_DbgMsg("error: refcount < 0\n");
 781         p_pic->i_refcount = 0;
 782     }
 783 #endif
 784
 785     if( (p_pic->i_refcount == 0) && (p_pic->i_status == DISPLAYED_PICTURE) )
 786     {
 787         p_pic->i_status = DESTROYED_PICTURE;
 788         p_vout->i_pictures--;
 789     }
 790
 791 #ifdef DEBUG_VIDEO
 792     intf_DbgMsg("picture %p refcount=%d\n", p_pic, p_pic->i_refcount );
 793 #endif
 794
 795     vlc_mutex_unlock( &p_vout->picture_lock );
 796 }
 797
 798 /*****************************************************************************
 799  * vout_SetBuffers: set buffers adresses
 800  *****************************************************************************
 801  * This function is called by system drivers to set buffers video memory
 802  * adresses.
 803  *****************************************************************************/
 804 void vout_SetBuffers( vout_thread_t *p_vout, void *p_buf1, void *p_buf2 )
 805 {
 806     /* No picture previously */
 807     p_vout->p_buffer[0].i_pic_x =         0;
 808     p_vout->p_buffer[0].i_pic_y =         0;
 809     p_vout->p_buffer[0].i_pic_width =     0;
 810     p_vout->p_buffer[0].i_pic_height =    0;
 811     p_vout->p_buffer[1].i_pic_x =         0;
 812     p_vout->p_buffer[1].i_pic_y =         0;
 813     p_vout->p_buffer[1].i_pic_width =     0;
 814     p_vout->p_buffer[1].i_pic_height =    0;
 815
 816     /* The first area covers all the screen */
 817     p_vout->p_buffer[0].i_areas =                 1;
 818     p_vout->p_buffer[0].pi_area_begin[0] =        0;
 819     p_vout->p_buffer[0].pi_area_end[0] =          p_vout->i_height - 1;
 820     p_vout->p_buffer[1].i_areas =                 1;
 821     p_vout->p_buffer[1].pi_area_begin[0] =        0;
 822     p_vout->p_buffer[1].pi_area_end[0] =          p_vout->i_height - 1;
 823
 824     /* Set adresses */
 825     p_vout->p_buffer[0].p_data = p_buf1;
 826     p_vout->p_buffer[1].p_data = p_buf2;
 827 }
 828
 829 /*****************************************************************************
 830  * vout_Pixel2RGB: return red, green and blue from pixel value
 831  *****************************************************************************
 832  * Return color values, in 0-255 range, of the decomposition of a pixel. This
 833  * is a slow routine and should only be used for initialization phase.
 834  *****************************************************************************/
 835 void vout_Pixel2RGB( vout_thread_t *p_vout, u32 i_pixel, int *pi_red, int *pi_green, int *pi_blue )
 836 {
 837     *pi_red =   i_pixel & p_vout->i_red_mask;
 838     *pi_green = i_pixel & p_vout->i_green_mask;
 839     *pi_blue =  i_pixel & p_vout->i_blue_mask;
 840 }
 841
 842 /* following functions are local */
 843
 844 /*****************************************************************************
 845  * BinaryLog: computes the base 2 log of a binary value
 846  *****************************************************************************
 847  * This functions is used by MaskToShift, to get a bit index from a binary
 848  * value.
 849  *****************************************************************************/
 850 static int BinaryLog(u32 i)
 851 {
 852     int i_log;
 853
 854     i_log = 0;
 855     if (i & 0xffff0000)
 856     {
 857         i_log = 16;
 858     }
 859     if (i & 0xff00ff00)
 860     {
 861         i_log += 8;
 862     }
 863     if (i & 0xf0f0f0f0)
 864     {
 865         i_log += 4;
 866     }
 867     if (i & 0xcccccccc)
 868     {
 869         i_log += 2;
 870     }
 871     if (i & 0xaaaaaaaa)
 872     {
 873         i_log++;
 874     }
 875     if (i != ((u32)1 << i_log))
 876     {
 877         intf_DbgMsg("internal error: binary log overflow\n");
 878     }
 879
 880     return( i_log );
 881 }
 882
 883 /*****************************************************************************
 884  * MaskToShift: transform a color mask into right and left shifts
 885  *****************************************************************************
 886  * This function is used for obtaining color shifts from masks.
 887  *****************************************************************************/
 888 static void MaskToShift( int *pi_left, int *pi_right, u32 i_mask )
 889 {
 890     u32 i_low, i_high;                 /* lower hand higher bits of the mask */
 891
 892     /* Get bits */
 893     i_low =  i_mask & (- i_mask);                   /* lower bit of the mask */
 894     i_high = i_mask + i_low;                       /* higher bit of the mask */
 895
 896     /* Transform bits into an index */
 897     i_low =  BinaryLog (i_low);
 898     i_high = BinaryLog (i_high);
 899
 900     /* Update pointers and return */
 901     *pi_left =   i_low;
 902     *pi_right = (8 - i_high + i_low);
 903 }
 904
 905 /*****************************************************************************
 906  * InitThread: initialize video output thread
 907  *****************************************************************************
 908  * This function is called from RunThread and performs the second step of the
 909  * initialization. It returns 0 on success. Note that the thread's flag are not
 910  * modified inside this function.
 911  *****************************************************************************/
 912 static int InitThread( vout_thread_t *p_vout )
 913 {
 914     /* Update status */
 915     intf_DbgMsg("\n");
 916     *p_vout->pi_status = THREAD_START;
 917
 918    /* Initialize output method - this function issues its own error messages */
 919     if( p_vout->p_sys_init( p_vout ) )
 920     {
 921         return( 1 );
 922     }
 923
 924     /* Initialize convertion tables and functions */
 925     if( vout_InitYUV( p_vout ) )
 926     {
 927         intf_ErrMsg("error: can't allocate YUV translation tables\n");
 928         return( 1 );
 929     }
 930
 931     /* Mark thread as running and return */
 932     p_vout->b_active =          1;
 933     *p_vout->pi_status =        THREAD_READY;
 934
 935
 936     intf_DbgMsg("thread ready\n");
 937     return( 0 );
 938 }
 939
 940 /*****************************************************************************
 941  * RunThread: video output thread
 942  *****************************************************************************
 943  * Video output thread. This function does only returns when the thread is
 944  * terminated. It handles the pictures arriving in the video heap and the
 945  * display device events.
 946  *****************************************************************************/
 947 static void RunThread( vout_thread_t *p_vout)
 948 {
 949     /* XXX?? welcome to gore land */
 950     static int i_trash_count = 0;
 951     static mtime_t last_display_date = 0;
 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     intf_DbgMsg("\n");
 970
 971     /*
 972      * Main loop - it is not executed if an error occured during
 973      * initialization
 974      */
 975     while( (!p_vout->b_die) && (!p_vout->b_error) )
 976     {
 977         /* Initialize loop variables */
 978         p_pic =         NULL;
 979         p_subpic =      NULL;
 980         display_date =  0;
 981         current_date =  mdate();
 982
 983         /*
 984          * Find the picture to display - this operation does not need lock,
 985          * since only READY_PICTUREs are handled
 986          */
 987         for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++ )
 988         {
 989             if( (p_vout->p_picture[i_index].i_status == READY_PICTURE) &&
 990             ( (p_pic == NULL) ||
 991               (p_vout->p_picture[i_index].date < display_date) ) )
 992             {
 993                 p_pic = &p_vout->p_picture[i_index];
 994                 display_date = p_pic->date;
 995             }
 996         }
 997
 998         if( p_pic )
 999         {
1000 #ifdef STATS
1001             /* Computes FPS rate */
1002             p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ] = display_date;
1003 #endif
1004 /* XXX?? */
1005 i_trash_count++;
1006 //fprintf( stderr, "gap : %Ld\n", display_date-last_display_date );
1007 last_display_date = display_date;
1008 #if 1
1009             if( display_date < current_date && i_trash_count > 4 )
1010             {
1011                 /* Picture is late: it will be destroyed and the thread
1012                  * will sleep and go to next picture */
1013
1014                 vlc_mutex_lock( &p_vout->picture_lock );
1015                 if( p_pic->i_refcount )
1016                 {
1017                     p_pic->i_status = DISPLAYED_PICTURE;
1018                 }
1019                 else
1020                 {
1021                     p_pic->i_status = DESTROYED_PICTURE;
1022                     p_vout->i_pictures--;
1023                 }
1024                 intf_DbgMsg( "warning: late picture %p skipped refcount=%d\n", p_pic, p_pic->i_refcount );
1025                 vlc_mutex_unlock( &p_vout->picture_lock );
1026
1027                 /* Update synchronization information as if display delay
1028                  * was 0 */
1029                 Synchronize( p_vout, display_date - current_date );
1030
1031                 p_pic =         NULL;
1032                 display_date =  0;
1033                 i_trash_count = 0;
1034             }
1035             else
1036 #endif
1037                 if( display_date > current_date + VOUT_DISPLAY_DELAY )
1038             {
1039                 /* A picture is ready to be rendered, but its rendering date
1040                  * is far from the current one so the thread will perform an
1041                  * empty loop as if no picture were found. The picture state
1042                  * is unchanged */
1043                 p_pic =         NULL;
1044                 display_date =  0;
1045             }
1046             else
1047             {
1048                 /* Picture will be displayed, update synchronization
1049                  * information */
1050                 Synchronize( p_vout, display_date - current_date );
1051             }
1052         }
1053         /*
1054          * Find the subpictures to display - this operation does not need
1055          * lock, since only READY_SUBPICTURE are handled. If no picture
1056          * has been selected, display_date will depend on the subpicture.
1057          * We get an easily parsable chained list of subpictures which
1058          * ends with NULL since p_subpic was initialized to NULL.
1059          */
1060         for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
1061         {
1062             if( p_vout->p_subpicture[i_index].i_status == READY_SUBPICTURE )
1063             {
1064                 p_vout->p_subpicture[i_index].p_next = p_subpic;
1065                 p_subpic = &p_vout->p_subpicture[i_index];
1066             }
1067         }
1068
1069
1070         /*
1071          * Perform rendering, sleep and display rendered picture
1072          */
1073
1074         if( p_pic )                        /* picture and perhaps subpicture */
1075         {
1076             b_display = p_vout->b_active;
1077             p_vout->last_display_date = display_date;
1078
1079             if( b_display )
1080             {
1081                 /* Set picture dimensions and clear buffer */
1082                 SetBufferPicture( p_vout, p_pic );
1083
1084                 /* Render picture and information */
1085                 RenderPicture( p_vout, p_pic );
1086                 if( p_vout->b_info )
1087                 {
1088                     RenderPictureInfo( p_vout, p_pic );
1089                     RenderInfo( p_vout );
1090                 }
1091                 if( p_subpic )
1092                 {
1093                     RenderSubPicture( p_vout, p_subpic );
1094                 }
1095             }
1096
1097             /* Remove picture from heap */
1098             vlc_mutex_lock( &p_vout->picture_lock );
1099             if( p_pic->i_refcount )
1100             {
1101                 p_pic->i_status = DISPLAYED_PICTURE;
1102             }
1103             else
1104             {
1105                 p_pic->i_status = DESTROYED_PICTURE;
1106                 p_vout->i_pictures--;
1107             }
1108             vlc_mutex_unlock( &p_vout->picture_lock );
1109
1110             /* Render interface and subpicture */
1111             if( b_display && p_vout->b_interface )
1112             {
1113                 RenderInterface( p_vout );
1114             }
1115
1116         }
1117         else if( p_vout->b_active && p_vout->init_display_date == 0)        /* idle or interface screen alone */
1118         {
1119             if( p_vout->b_interface && 0 /* && XXX?? intf_change */ )
1120             {
1121                 /* Interface has changed, so a new rendering is required - force
1122                  * it by setting last idle date to 0 */
1123                 p_vout->last_idle_date = 0;
1124             }
1125
1126             /* Render idle screen and update idle date, then render interface if
1127              * required */
1128             b_display = RenderIdle( p_vout );
1129             if( b_display )
1130             {
1131                 p_vout->last_idle_date = current_date;
1132                 if( p_vout->b_interface )
1133                 {
1134                     RenderInterface( p_vout );
1135                 }
1136             }
1137
1138         }
1139         else
1140         {
1141             b_display = 0;
1142         }
1143
1144
1145         /*
1146          * chech for the current time and
1147          * display splash screen if everything is on time
1148          */
1149         if( p_vout->init_display_date > 0)
1150         {
1151             if( p_vout->b_active &&
1152                     mdate()-p_vout->init_display_date < 5000000)
1153             {
1154                 /* there is something to display ! */
1155                     b_display = 1;
1156                     RenderSplash( p_vout );
1157
1158             } else {
1159                 /* no splash screen ! */
1160                 intf_ErrMsgImm("End of splash screen\n");
1161                 p_vout->init_display_date=0;
1162             }
1163         }
1164
1165
1166
1167
1168         /*
1169          * Sleep, wake up and display rendered picture
1170          */
1171
1172 #ifdef STATS
1173         /* Store render time */
1174         p_vout->render_time = mdate() - current_date;
1175 #endif
1176
1177         /* Give back change lock */
1178         vlc_mutex_unlock( &p_vout->change_lock );
1179
1180         /* Sleep a while or until a given date */
1181         if( display_date != 0 )
1182         {
1183             mwait( display_date );
1184         }
1185         else
1186         {
1187             msleep( VOUT_IDLE_SLEEP );
1188         }
1189
1190         /* On awakening, take back lock and send immediately picture to display,
1191          * then swap buffers */
1192         vlc_mutex_lock( &p_vout->change_lock );
1193 #ifdef DEBUG_VIDEO
1194         intf_DbgMsg( "picture %p, subpicture %p in buffer %d, display=%d\n", p_pic, p_subpic,
1195                      p_vout->i_buffer_index, b_display && !(p_vout->i_changes & VOUT_NODISPLAY_CHANGE) );
1196 #endif
1197         if( b_display && !(p_vout->i_changes & VOUT_NODISPLAY_CHANGE) )
1198         {
1199             p_vout->p_sys_display( p_vout );
1200 #ifndef SYS_BEOS
1201             p_vout->i_buffer_index = ++p_vout->i_buffer_index & 1;
1202 #endif
1203         }
1204
1205         /*
1206          * Check events and manage thread
1207          */
1208         if( p_vout->p_sys_manage( p_vout ) | Manage( p_vout ) )
1209         {
1210             /* A fatal error occured, and the thread must terminate immediately,
1211              * without displaying anything - setting b_error to 1 cause the
1212              * immediate end of the main while() loop. */
1213             p_vout->b_error = 1;
1214         }
1215     }
1216
1217     /*
1218      * Error loop - wait until the thread destruction is requested
1219      */
1220     if( p_vout->b_error )
1221     {
1222         ErrorThread( p_vout );
1223     }
1224
1225     /* End of thread */
1226     EndThread( p_vout );
1227     DestroyThread( p_vout, THREAD_OVER );
1228     intf_DbgMsg( "thread end\n" );
1229 }
1230
1231 /*****************************************************************************
1232  * ErrorThread: RunThread() error loop
1233  *****************************************************************************
1234  * This function is called when an error occured during thread main's loop. The
1235  * thread can still receive feed, but must be ready to terminate as soon as
1236  * possible.
1237  *****************************************************************************/
1238 static void ErrorThread( vout_thread_t *p_vout )
1239 {
1240     /* Wait until a `die' order */
1241     intf_DbgMsg("\n");
1242     while( !p_vout->b_die )
1243     {
1244         /* Sleep a while */
1245         msleep( VOUT_IDLE_SLEEP );
1246     }
1247 }
1248
1249 /*****************************************************************************
1250  * EndThread: thread destruction
1251  *****************************************************************************
1252  * This function is called when the thread ends after a sucessful
1253  * initialization. It frees all ressources allocated by InitThread.
1254  *****************************************************************************/
1255 static void EndThread( vout_thread_t *p_vout )
1256 {
1257     int     i_index;                                        /* index in heap */
1258
1259     /* Store status */
1260     intf_DbgMsg("\n");
1261     *p_vout->pi_status = THREAD_END;
1262
1263     /* Destroy all remaining pictures and subpictures */
1264     for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++ )
1265     {
1266         if( p_vout->p_picture[i_index].i_status != FREE_PICTURE )
1267         {
1268             free( p_vout->p_picture[i_index].p_data );
1269         }
1270     }
1271     for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
1272     {
1273         if( p_vout->p_subpicture[i_index].i_status != FREE_SUBPICTURE )
1274         {
1275             free( p_vout->p_subpicture[i_index].p_data );
1276         }
1277     }
1278
1279     /* Destroy translation tables */
1280     vout_EndYUV( p_vout );
1281     p_vout->p_sys_end( p_vout );
1282 }
1283
1284 /*****************************************************************************
1285  * DestroyThread: thread destruction
1286  *****************************************************************************
1287  * This function is called when the thread ends. It frees all ressources
1288  * allocated by CreateThread. Status is available at this stage.
1289  *****************************************************************************/
1290 static void DestroyThread( vout_thread_t *p_vout, int i_status )
1291 {
1292     int *pi_status;                                         /* status adress */
1293
1294     /* Store status adress */
1295     intf_DbgMsg("\n");
1296     pi_status = p_vout->pi_status;
1297
1298     /* Destroy thread structures allocated by Create and InitThread */
1299     vout_UnloadFont( p_vout->p_default_font );
1300     vout_UnloadFont( p_vout->p_large_font );
1301     p_vout->p_sys_destroy( p_vout );
1302
1303     /* Free structure */
1304     free( p_vout );
1305     *pi_status = i_status;
1306 }
1307
1308 /*****************************************************************************
1309  * Print: print simple text on a picture
1310  *****************************************************************************
1311  * This function will print a simple text on the picture. It is designed to
1312  * print debugging or general information.
1313  *****************************************************************************/
1314 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 )
1315 {
1316     int                 i_text_height;                  /* total text height */
1317     int                 i_text_width;                    /* total text width */
1318
1319     /* Update upper left coordinates according to alignment */
1320     vout_TextSize( p_vout->p_default_font, 0, psz_text, &i_text_width, &i_text_height );
1321     if( !Align( p_vout, &i_x, &i_y, i_text_width, i_text_height, i_h_align, i_v_align ) )
1322     {
1323         /* Set area and print text */
1324         SetBufferArea( p_vout, i_x, i_y, i_text_width, i_text_height );
1325         vout_Print( p_vout->p_default_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1326                     i_y * p_vout->i_bytes_per_line + i_x * p_vout->i_bytes_per_pixel,
1327                     p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1328                     p_vout->i_white_pixel, 0, 0,
1329                     0, psz_text, 100 );
1330     }
1331 }
1332
1333 /*****************************************************************************
1334  * SetBufferArea: activate an area in current buffer
1335  *****************************************************************************
1336  * This function is called when something is rendered on the current buffer.
1337  * It set the area as active and prepare it to be cleared on next rendering.
1338  * Pay attention to the fact that in this functions, i_h is in fact the end y
1339  * coordinate of the new area.
1340  *****************************************************************************/
1341 static void SetBufferArea( vout_thread_t *p_vout, int i_x, int i_y, int i_w, int i_h )
1342 {
1343     vout_buffer_t *     p_buffer;                          /* current buffer */
1344     int                 i_area_begin, i_area_end; /* area vertical extension */
1345     int                 i_area, i_area_copy;                   /* area index */
1346     int                 i_area_shift;            /* shift distance for areas */
1347
1348     /* Choose buffer and modify h to end of area position */
1349     p_buffer =  &p_vout->p_buffer[ p_vout->i_buffer_index ];
1350     i_h +=      i_y - 1;
1351
1352     /*
1353      * Remove part of the area which is inside the picture - this is done
1354      * by calling again SetBufferArea with the correct areas dimensions.
1355      */
1356     if( (i_x >= p_buffer->i_pic_x) && (i_x + i_w <= p_buffer->i_pic_x + p_buffer->i_pic_width) )
1357     {
1358         i_area_begin =  p_buffer->i_pic_y;
1359         i_area_end =    i_area_begin + p_buffer->i_pic_height - 1;
1360
1361         if( ((i_y >= i_area_begin) && (i_y <= i_area_end)) ||
1362             ((i_h >= i_area_begin) && (i_h <= i_area_end)) ||
1363             ((i_y <  i_area_begin) && (i_h > i_area_end)) )
1364         {
1365             /* Keep the stripe above the picture, if any */
1366             if( i_y < i_area_begin )
1367             {
1368                 SetBufferArea( p_vout, i_x, i_y, i_w, i_area_begin - i_y );
1369             }
1370             /* Keep the stripe below the picture, if any */
1371             if( i_h > i_area_end )
1372             {
1373                 SetBufferArea( p_vout, i_x, i_area_end, i_w, i_h - i_area_end );
1374             }
1375             return;
1376         }
1377     }
1378
1379     /* Skip some extensions until interesting areas */
1380     for( i_area = 0;
1381          (i_area < p_buffer->i_areas) &&
1382              (p_buffer->pi_area_end[i_area] + 1 <= i_y);
1383          i_area++ )
1384     {
1385         ;
1386     }
1387
1388     if( i_area == p_buffer->i_areas )
1389     {
1390         /* New area is below all existing ones: just add it at the end of the
1391          * array, if possible - otherwise, append it to the last one */
1392         if( i_area < VOUT_MAX_AREAS )
1393         {
1394             p_buffer->pi_area_begin[i_area] = i_y;
1395             p_buffer->pi_area_end[i_area] = i_h;
1396             p_buffer->i_areas++;
1397         }
1398         else
1399         {
1400 #ifdef DEBUG_VIDEO
1401             intf_DbgMsg("area overflow\n");
1402 #endif
1403             p_buffer->pi_area_end[VOUT_MAX_AREAS - 1] = i_h;
1404         }
1405     }
1406     else
1407     {
1408         i_area_begin =  p_buffer->pi_area_begin[i_area];
1409         i_area_end =    p_buffer->pi_area_end[i_area];
1410
1411         if( i_y < i_area_begin )
1412         {
1413             if( i_h >= i_area_begin - 1 )
1414             {
1415                 /* Extend area above */
1416                 p_buffer->pi_area_begin[i_area] = i_y;
1417             }
1418             else
1419             {
1420                 /* Create a new area above : merge last area if overflow, then
1421                  * move all old areas down */
1422                 if( p_buffer->i_areas == VOUT_MAX_AREAS )
1423                 {
1424 #ifdef DEBUG_VIDEO
1425                     intf_DbgMsg("areas overflow\n");
1426 #endif
1427                     p_buffer->pi_area_end[VOUT_MAX_AREAS - 2] = p_buffer->pi_area_end[VOUT_MAX_AREAS - 1];
1428                 }
1429                 else
1430                 {
1431                     p_buffer->i_areas++;
1432                 }
1433                 for( i_area_copy = p_buffer->i_areas - 1; i_area_copy > i_area; i_area_copy-- )
1434                 {
1435                     p_buffer->pi_area_begin[i_area_copy] = p_buffer->pi_area_begin[i_area_copy - 1];
1436                     p_buffer->pi_area_end[i_area_copy] =   p_buffer->pi_area_end[i_area_copy - 1];
1437                 }
1438                 p_buffer->pi_area_begin[i_area] = i_y;
1439                 p_buffer->pi_area_end[i_area] = i_h;
1440                 return;
1441             }
1442         }
1443         if( i_h > i_area_end )
1444         {
1445             /* Find further areas which can be merged with the new one */
1446             for( i_area_copy = i_area + 1;
1447                  (i_area_copy < p_buffer->i_areas) &&
1448                      (p_buffer->pi_area_begin[i_area] <= i_h);
1449                  i_area_copy++ )
1450             {
1451                 ;
1452             }
1453             i_area_copy--;
1454
1455             if( i_area_copy != i_area )
1456             {
1457                 /* Merge with last possible areas */
1458                 p_buffer->pi_area_end[i_area] = MAX( i_h, p_buffer->pi_area_end[i_area_copy] );
1459
1460                 /* Shift lower areas upward */
1461                 i_area_shift = i_area_copy - i_area;
1462                 p_buffer->i_areas -= i_area_shift;
1463                 for( i_area_copy = i_area + 1; i_area_copy < p_buffer->i_areas; i_area_copy++ )
1464                 {
1465                     p_buffer->pi_area_begin[i_area_copy] = p_buffer->pi_area_begin[i_area_copy + i_area_shift];
1466                     p_buffer->pi_area_end[i_area_copy] =   p_buffer->pi_area_end[i_area_copy + i_area_shift];
1467                 }
1468             }
1469             else
1470             {
1471                 /* Extend area below */
1472                 p_buffer->pi_area_end[i_area] = i_h;
1473             }
1474         }
1475     }
1476 }
1477
1478 /*****************************************************************************
1479  * SetBufferPicture: clear buffer and set picture area
1480  *****************************************************************************
1481  * This function is called before any rendering. It clears the current
1482  * rendering buffer and set the new picture area. If the picture pointer is
1483  * NULL, then no picture area is defined. Floating operations are avoided since
1484  * some MMX calculations may follow.
1485  *****************************************************************************/
1486 static void SetBufferPicture( vout_thread_t *p_vout, picture_t *p_pic )
1487 {
1488     vout_buffer_t *     p_buffer;                          /* current buffer */
1489     int                 i_pic_x, i_pic_y;                /* picture position */
1490     int                 i_pic_width, i_pic_height;     /* picture dimensions */
1491     int                 i_old_pic_y, i_old_pic_height;   /* old picture area */
1492     int                 i_vout_width, i_vout_height;   /* display dimensions */
1493     int                 i_area;                                /* area index */
1494     int                 i_data_index;                     /* area data index */
1495     int                 i_data_size;   /* area data size, in 256 bytes blocs */
1496     u64 *               p_data;                   /* area data, for clearing */
1497     byte_t *            p_data8;           /* area data, for clearing (slow) */
1498
1499     /* Choose buffer and set display dimensions */
1500     p_buffer =          &p_vout->p_buffer[ p_vout->i_buffer_index ];
1501     i_vout_width =      p_vout->i_width;
1502     i_vout_height =     p_vout->i_height;
1503
1504     /*
1505      * Computes new picture size
1506      */
1507     if( p_pic != NULL )
1508     {
1509         /* Try horizontal scaling first - width must be a mutiple of 16 */
1510         i_pic_width = (( p_vout->b_scale || (p_pic->i_width > i_vout_width)) ?
1511                        i_vout_width : p_pic->i_width) & ~0xf;
1512         switch( p_pic->i_aspect_ratio )
1513         {
1514         case AR_3_4_PICTURE:
1515             i_pic_height = i_pic_width * 3 / 4;
1516             break;
1517         case AR_16_9_PICTURE:
1518             i_pic_height = i_pic_width * 9 / 16;
1519             break;
1520         case AR_221_1_PICTURE:
1521             i_pic_height = i_pic_width * 100 / 221;
1522             break;
1523         case AR_SQUARE_PICTURE:
1524         default:
1525             i_pic_height = p_pic->i_height * i_pic_width / p_pic->i_width;
1526             break;
1527         }
1528
1529         /* If picture dimensions using horizontal scaling are too large, use
1530          * vertical scaling. Since width must be a multiple of 16, height is
1531          * adjusted again after. */
1532         if( i_pic_height > i_vout_height )
1533         {
1534             i_pic_height = ( p_vout->b_scale || (p_pic->i_height > i_vout_height)) ?
1535                 i_vout_height : p_pic->i_height;
1536             switch( p_pic->i_aspect_ratio )
1537             {
1538             case AR_3_4_PICTURE:
1539                 i_pic_width = (i_pic_height * 4 / 3) & ~0xf;
1540                 i_pic_height = i_pic_width * 3 / 4;
1541                 break;
1542             case AR_16_9_PICTURE:
1543                 i_pic_width = (i_pic_height * 16 / 9) & ~0xf;
1544                 i_pic_height = i_pic_width * 9 / 16;
1545                 break;
1546             case AR_221_1_PICTURE:
1547                 i_pic_width = (i_pic_height * 221 / 100) & ~0xf;
1548                 i_pic_height = i_pic_width * 100 / 221;
1549                 break;
1550             case AR_SQUARE_PICTURE:
1551             default:
1552                 i_pic_width = (p_pic->i_width * i_pic_height / p_pic->i_height) & ~0xf;
1553                 i_pic_height = p_pic->i_height * i_pic_width / p_pic->i_width;
1554                 break;
1555             }
1556         }
1557
1558         /* Set picture position */
1559         i_pic_x = (p_vout->i_width - i_pic_width) / 2;
1560         i_pic_y = (p_vout->i_height - i_pic_height) / 2;
1561     }
1562     else
1563     {
1564         /* No picture: size is 0 */
1565         i_pic_x =       0;
1566         i_pic_y =       0;
1567         i_pic_width =   0;
1568         i_pic_height =  0;
1569     }
1570
1571     /*
1572      * Set new picture size - if it is smaller than the previous one, clear
1573      * around it. Since picture are centered, only their size is tested.
1574      */
1575     if( (p_buffer->i_pic_width > i_pic_width) || (p_buffer->i_pic_height > i_pic_height) )
1576     {
1577         i_old_pic_y =            p_buffer->i_pic_y;
1578         i_old_pic_height =       p_buffer->i_pic_height;
1579         p_buffer->i_pic_x =      i_pic_x;
1580         p_buffer->i_pic_y =      i_pic_y;
1581         p_buffer->i_pic_width =  i_pic_width;
1582         p_buffer->i_pic_height = i_pic_height;
1583         SetBufferArea( p_vout, 0, i_old_pic_y, p_vout->i_width, i_old_pic_height );
1584     }
1585     else
1586     {
1587         p_buffer->i_pic_x =      i_pic_x;
1588         p_buffer->i_pic_y =      i_pic_y;
1589         p_buffer->i_pic_width =  i_pic_width;
1590         p_buffer->i_pic_height = i_pic_height;
1591     }
1592
1593     /*
1594      * Clear areas
1595      */
1596     for( i_area = 0; i_area < p_buffer->i_areas; i_area++ )
1597     {
1598 #ifdef DEBUG_VIDEO
1599         intf_DbgMsg("clearing picture %p area in buffer %d: %d-%d\n", p_pic,
1600                     p_vout->i_buffer_index, p_buffer->pi_area_begin[i_area], p_buffer->pi_area_end[i_area] );
1601 #endif
1602         i_data_size = (p_buffer->pi_area_end[i_area] - p_buffer->pi_area_begin[i_area] + 1) * p_vout->i_bytes_per_line;
1603         p_data = (u64*) (p_buffer->p_data + p_vout->i_bytes_per_line * p_buffer->pi_area_begin[i_area]);
1604         for( i_data_index = i_data_size / 256; i_data_index-- ; )
1605         {
1606             /* Clear 256 bytes block */
1607             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1608             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1609             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1610             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1611             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1612             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1613             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1614             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1615         }
1616         for( i_data_index = (i_data_size % 256) / 16; i_data_index--; )
1617         {
1618             /* Clear remaining 16 bytes blocks */
1619             *p_data++ = 0;  *p_data++ = 0;
1620         }
1621         p_data8 = (byte_t *)p_data;
1622         for( i_data_index = i_data_size % 16; i_data_index--; )
1623         {
1624             /* Clear remaining bytes */
1625             *p_data8++ = 0;
1626         }
1627     }
1628
1629     /*
1630      * Clear areas array
1631      */
1632     p_buffer->i_areas = 0;
1633 }
1634
1635 /*****************************************************************************
1636  * RenderPicture: render a picture
1637  *****************************************************************************
1638  * This function converts a picture from a video heap to a pixel-encoded image
1639  * and copies it to the current rendering buffer. No lock is required, since
1640  * the * rendered picture has been determined as existant, and will only be
1641  * destroyed by the vout thread later.
1642  *****************************************************************************/
1643 static void RenderPicture( vout_thread_t *p_vout, picture_t *p_pic )
1644 {
1645 #ifdef DEBUG_VIDEO
1646     char                psz_date[MSTRTIME_MAX_SIZE];         /* picture date */
1647     mtime_t             render_time;               /* picture rendering time */
1648 #endif
1649     vout_buffer_t *     p_buffer;                        /* rendering buffer */
1650     byte_t *            p_pic_data;                /* convertion destination */
1651
1652     /* Get and set rendering information */
1653     p_buffer =          &p_vout->p_buffer[ p_vout->i_buffer_index ];
1654     p_pic_data =        p_buffer->p_data +
1655                         p_buffer->i_pic_x * p_vout->i_bytes_per_pixel +
1656                         p_buffer->i_pic_y * p_vout->i_bytes_per_line;
1657 #ifdef DEBUG_VIDEO
1658     render_time = mdate();
1659 #endif
1660
1661     /*
1662      * Choose appropriate rendering function and render picture
1663      */
1664     switch( p_pic->i_type )
1665     {
1666     case YUV_420_PICTURE:
1667         p_vout->yuv.p_Convert420( p_vout, p_pic_data,
1668                                   p_pic->p_y, p_pic->p_u, p_pic->p_v,
1669                                   p_pic->i_width, p_pic->i_height,
1670                                   p_buffer->i_pic_width, p_buffer->i_pic_height,
1671                                   p_vout->i_bytes_per_line / p_vout->i_bytes_per_pixel,
1672                                   p_pic->i_matrix_coefficients );
1673         break;
1674     case YUV_422_PICTURE:
1675         p_vout->yuv.p_Convert422( p_vout, p_pic_data,
1676                                   p_pic->p_y, p_pic->p_u, p_pic->p_v,
1677                                   p_pic->i_width, p_pic->i_height,
1678                                   p_buffer->i_pic_width, p_buffer->i_pic_height,
1679                                   p_vout->i_bytes_per_line / p_vout->i_bytes_per_pixel,
1680                                   p_pic->i_matrix_coefficients );
1681         break;
1682     case YUV_444_PICTURE:
1683         p_vout->yuv.p_Convert444( p_vout, p_pic_data,
1684                                   p_pic->p_y, p_pic->p_u, p_pic->p_v,
1685                                   p_pic->i_width, p_pic->i_height,
1686                                   p_buffer->i_pic_width, p_buffer->i_pic_height,
1687                                   p_vout->i_bytes_per_line / p_vout->i_bytes_per_pixel,
1688                                   p_pic->i_matrix_coefficients );
1689         break;
1690 #ifdef DEBUG
1691     default:
1692         intf_DbgMsg("error: unknown picture type %d\n", p_pic->i_type );
1693         break;
1694 #endif
1695     }
1696
1697 #ifdef DEBUG_VIDEO
1698     /* Print picture date and rendering time */
1699     intf_DbgMsg("picture %p rendered in buffer %d (%ld us), display date: %s\n", p_pic,
1700                 p_vout->i_buffer_index, (long) (mdate() - render_time),
1701                 mstrtime( psz_date, p_pic->date ));
1702 #endif
1703 }
1704
1705 /*****************************************************************************
1706  * RenderPictureInfo: print additionnal information on a picture
1707  *****************************************************************************
1708  * This function will print information such as fps and other picture
1709  * dependant information.
1710  *****************************************************************************/
1711 static void RenderPictureInfo( vout_thread_t *p_vout, picture_t *p_pic )
1712 {
1713 #if defined(STATS) || defined(DEBUG)
1714     char        psz_buffer[256];                            /* string buffer */
1715 #endif
1716
1717 #ifdef STATS
1718     /*
1719      * Print FPS rate in upper right corner
1720      */
1721     if( p_vout->c_fps_samples > VOUT_FPS_SAMPLES )
1722     {
1723         long i_fps = VOUT_FPS_SAMPLES * 1000000 * 10 /
1724                            ( p_vout->p_fps_sample[ (p_vout->c_fps_samples - 1)
1725                                                    % VOUT_FPS_SAMPLES ] -
1726                              p_vout->p_fps_sample[ p_vout->c_fps_samples
1727                                                    % VOUT_FPS_SAMPLES ] );
1728         sprintf( psz_buffer, "%li.%i fps", i_fps / 10, (int)i_fps % 10 );
1729         Print( p_vout, 0, 0, RIGHT_RALIGN, TOP_RALIGN, psz_buffer );
1730     }
1731
1732     /*
1733      * Print frames count and loop time in upper left corner
1734      */
1735     sprintf( psz_buffer, "%ld frames, render: %ldus",
1736              (long) p_vout->c_fps_samples, (long) p_vout->render_time );
1737     Print( p_vout, 0, 0, LEFT_RALIGN, TOP_RALIGN, psz_buffer );
1738 #endif
1739
1740 #ifdef DEBUG
1741     /*
1742      * Print picture information in lower right corner
1743      */
1744     sprintf( psz_buffer, "%s picture %dx%d (%dx%d%+d%+d %s) -> %dx%d+%d+%d",
1745              (p_pic->i_type == YUV_420_PICTURE) ? "4:2:0" :
1746              ((p_pic->i_type == YUV_422_PICTURE) ? "4:2:2" :
1747               ((p_pic->i_type == YUV_444_PICTURE) ? "4:4:4" : "ukn-type")),
1748              p_pic->i_width, p_pic->i_height,
1749              p_pic->i_display_width, p_pic->i_display_height,
1750              p_pic->i_display_horizontal_offset, p_pic->i_display_vertical_offset,
1751              (p_pic->i_aspect_ratio == AR_SQUARE_PICTURE) ? "sq" :
1752              ((p_pic->i_aspect_ratio == AR_3_4_PICTURE) ? "4:3" :
1753               ((p_pic->i_aspect_ratio == AR_16_9_PICTURE) ? "16:9" :
1754                ((p_pic->i_aspect_ratio == AR_221_1_PICTURE) ? "2.21:1" : "ukn-ar" ))),
1755              p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_width,
1756              p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_height,
1757              p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_x,
1758              p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_y );
1759     Print( p_vout, 0, 0, RIGHT_RALIGN, BOTTOM_RALIGN, psz_buffer );
1760 #endif
1761 }
1762
1763 /*****************************************************************************
1764  * RenderSplash: render splash picture
1765  *****************************************************************************
1766  * This function will print something on the screen. It will return 0 if
1767  * nothing has been rendered, or 1 if something has been changed on the screen.
1768  * Note that if you absolutely want something to be printed, you will have
1769  * to force it by setting the last idle date to 0.
1770  * Unlike other rendering functions, this one calls the SetBufferPicture
1771  * function when needed.
1772  *****************************************************************************/
1773 int RenderSplash( vout_thread_t *p_vout )
1774 {
1775     int         i_x = 0, i_y = 0;                           /* text position */
1776     int         i_width, i_height;                              /* text size */
1777     char *psz_text =    "VideoLan Client (" VERSION ")";            /* text to display */
1778
1779     memset( p_vout->p_buffer[ p_vout->i_buffer_index ].p_data,
1780                   p_vout->i_bytes_per_line * p_vout->i_height, 12);
1781
1782  //   SetBufferPicture( p_vout, NULL );
1783     vout_TextSize( p_vout->p_large_font, WIDE_TEXT | OUTLINED_TEXT, psz_text,
1784                    &i_width, &i_height );
1785     if( !Align( p_vout, &i_x, &i_y, i_width, i_height, CENTER_RALIGN, CENTER_RALIGN ) )
1786     {
1787         vout_Print( p_vout->p_large_font,
1788                     p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1789                     i_x * p_vout->i_bytes_per_pixel + (i_y - 16 ) * p_vout->i_bytes_per_line,
1790                     p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1791                     p_vout->i_white_pixel, p_vout->i_gray_pixel, 0,
1792                     WIDE_TEXT | OUTLINED_TEXT, psz_text, 100);
1793         SetBufferArea( p_vout, i_x, i_y, i_width, i_height);
1794     }
1795     return( 1 );
1796 }
1797
1798
1799 /*****************************************************************************
1800  * RenderIdle: render idle picture
1801  *****************************************************************************
1802  * This function will print something on the screen. It will return 0 if
1803  * nothing has been rendered, or 1 if something has been changed on the screen.
1804  * Note that if you absolutely want something to be printed, you will have
1805  * to force it by setting the last idle date to 0.
1806  * Unlike other rendering functions, this one calls the SetBufferPicture
1807  * function when needed.
1808  *****************************************************************************/
1809 int RenderIdle( vout_thread_t *p_vout )
1810 {
1811     int         i_x = 0, i_y = 0;                           /* text position */
1812     int         i_width, i_height;                              /* text size */
1813     mtime_t     current_date;                                /* current date */
1814     int         i_amount = 0;                             /*  amount to draw */
1815     char *psz_text =    "Waiting for stream";            /* text to display */
1816     char *psz_wtext =   "[................]";
1817
1818
1819     memset( p_vout->p_buffer[ p_vout->i_buffer_index ].p_data,
1820                     p_vout->i_bytes_per_line * p_vout->i_height, 12);
1821
1822
1823     current_date = mdate();
1824     if( (current_date - p_vout->last_display_date) > VOUT_IDLE_DELAY
1825 //            && (current_date - p_vout->last_idle_date) > VOUT_IDLE_DELAY
1826     )
1827     {
1828         SetBufferPicture( p_vout, NULL );
1829         vout_TextSize( p_vout->p_large_font, WIDE_TEXT | OUTLINED_TEXT, psz_text,
1830                        &i_width, &i_height );
1831         if( !Align( p_vout, &i_x, &i_y, i_width, i_height * 2, CENTER_RALIGN, CENTER_RALIGN ) )
1832         {
1833             i_amount = (int) ((current_date - p_vout->last_display_date ) / 5000LL);
1834             vout_Print( p_vout->p_large_font,
1835                         p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1836                         i_x * p_vout->i_bytes_per_pixel + i_y * p_vout->i_bytes_per_line,
1837                         p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1838                         p_vout->i_white_pixel, p_vout->i_gray_pixel, 0,
1839                         WIDE_TEXT | OUTLINED_TEXT, psz_text,  (i_amount / 3 ) %110);
1840
1841             vout_Print( p_vout->p_large_font,
1842                     p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1843                     i_x * p_vout->i_bytes_per_pixel + (i_y + 16) * p_vout->i_bytes_per_line,
1844                     p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1845                     p_vout->i_white_pixel, p_vout->i_gray_pixel, 0,
1846                     WIDE_TEXT | OUTLINED_TEXT, psz_wtext,  (i_amount/5)%110 );
1847
1848
1849             SetBufferArea( p_vout, i_x, i_y, i_width, i_height * 2 );
1850         }
1851         return( 1 );
1852     }
1853     return( 0 );
1854 }
1855
1856 /*****************************************************************************
1857  * RenderInfo: render additionnal information
1858  *****************************************************************************
1859  * This function renders information which do not depend on the current
1860  * picture rendered.
1861  *****************************************************************************/
1862 static void RenderInfo( vout_thread_t *p_vout )
1863 {
1864 #ifdef DEBUG
1865     char        psz_buffer[256];                            /* string buffer */
1866     int         i_ready_pic = 0;                           /* ready pictures */
1867     int         i_reserved_pic = 0;                     /* reserved pictures */
1868     int         i_picture;                                  /* picture index */
1869 #endif
1870
1871 #ifdef DEBUG
1872     /*
1873      * Print thread state in lower left corner
1874      */
1875     for( i_picture = 0; i_picture < VOUT_MAX_PICTURES; i_picture++ )
1876     {
1877         switch( p_vout->p_picture[i_picture].i_status )
1878         {
1879         case RESERVED_PICTURE:
1880         case RESERVED_DATED_PICTURE:
1881         case RESERVED_DISP_PICTURE:
1882             i_reserved_pic++;
1883             break;
1884         case READY_PICTURE:
1885             i_ready_pic++;
1886             break;
1887         }
1888     }
1889     sprintf( psz_buffer, "pic: %d (%d/%d)/%d",
1890              p_vout->i_pictures, i_reserved_pic, i_ready_pic, VOUT_MAX_PICTURES );
1891     Print( p_vout, 0, 0, LEFT_RALIGN, BOTTOM_RALIGN, psz_buffer );
1892 #endif
1893 }
1894
1895 /*****************************************************************************
1896  * RenderSubPicture: render a subpicture
1897  *****************************************************************************
1898  * This function renders a sub picture unit.
1899  *****************************************************************************/
1900 static void RenderSubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
1901 {
1902     p_vout_font_t       p_font;                                 /* text font */
1903     int                 i_width, i_height;          /* subpicture dimensions */
1904
1905     while( p_subpic != NULL )
1906     {
1907         switch( p_subpic->i_type )
1908         {
1909         case DVD_SUBPICTURE:                          /* DVD subpicture unit */
1910             /* test if the picture really has to be displayed */
1911             if( mdate() < p_subpic->begin_date )
1912             {
1913                 /* not yet, see you later */
1914                 break;
1915             }
1916             if( mdate() > p_subpic->end_date )
1917             {
1918                 /* too late, destroying the subpic */
1919                 vout_DestroySubPicture( p_vout, p_subpic );
1920                 break;
1921             }
1922             vout_RenderSPU( &p_vout->p_buffer[ p_vout->i_buffer_index ],
1923                             p_subpic, p_vout->i_bytes_per_pixel,
1924                             p_vout->i_bytes_per_line );
1925             break;
1926         case TEXT_SUBPICTURE:                            /* single line text */
1927             /* Select default font if not specified */
1928             p_font = p_subpic->type.text.p_font;
1929             if( p_font == NULL )
1930             {
1931                 p_font = p_vout->p_default_font;
1932             }
1933
1934             /* Compute text size (width and height fields are ignored)
1935              * and print it */
1936             vout_TextSize( p_font, p_subpic->type.text.i_style,
1937                            p_subpic->p_data, &i_width, &i_height );
1938             if( !Align( p_vout, &p_subpic->i_x, &p_subpic->i_y,
1939                         i_width, i_height, p_subpic->i_horizontal_align,
1940                         p_subpic->i_vertical_align ) )
1941             {
1942                 vout_Print( p_font,
1943                             p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1944                             p_subpic->i_x * p_vout->i_bytes_per_pixel +
1945                             p_subpic->i_y * p_vout->i_bytes_per_line,
1946                             p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1947                             p_subpic->type.text.i_char_color,
1948                             p_subpic->type.text.i_border_color,
1949                             p_subpic->type.text.i_bg_color,
1950                             p_subpic->type.text.i_style, p_subpic->p_data, 100 );
1951                 SetBufferArea( p_vout, p_subpic->i_x, p_subpic->i_y,
1952                                i_width, i_height );
1953             }
1954             break;
1955
1956 #ifdef DEBUG
1957         default:
1958             intf_DbgMsg( "error: unknown subpicture %p type %d\n",
1959                          p_subpic, p_subpic->i_type );
1960 #endif
1961         }
1962
1963         p_subpic = p_subpic->p_next;
1964     }
1965 }
1966
1967 /*****************************************************************************
1968  * RenderInterface: render the interface
1969  *****************************************************************************
1970  * This function renders the interface, if any.
1971  *****************************************************************************/
1972 static void RenderInterface( vout_thread_t *p_vout )
1973 {
1974     int         i_height, i_text_height;            /* total and text height */
1975     int         i_width_1, i_width_2;                          /* text width */
1976     int         i_byte;                                        /* byte index */
1977     const char *psz_text_1 = "[1-9] Channel   [i]nfo   [c]olor     [g/G]amma";
1978     const char *psz_text_2 = "[+/-] Volume    [m]ute   [s]caling   [Q]uit";
1979
1980     /* Get text size */
1981     vout_TextSize( p_vout->p_large_font, OUTLINED_TEXT, psz_text_1, &i_width_1, &i_height );
1982     vout_TextSize( p_vout->p_large_font, OUTLINED_TEXT, psz_text_2, &i_width_2, &i_text_height );
1983     i_height += i_text_height;
1984
1985     /* Render background */
1986     for( i_byte = (p_vout->i_height - i_height) * p_vout->i_bytes_per_line;
1987          i_byte < p_vout->i_height * p_vout->i_bytes_per_line;
1988          i_byte++ )
1989     {
1990         /* XXX?? noooo ! */
1991         p_vout->p_buffer[ p_vout->i_buffer_index ].p_data[ i_byte ] = p_vout->i_blue_pixel;
1992     }
1993
1994     /* Render text, if not larger than screen */
1995     if( i_width_1 < p_vout->i_width )
1996     {
1997         vout_Print( p_vout->p_large_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1998                     (p_vout->i_height - i_height) * p_vout->i_bytes_per_line,
1999                     p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
2000                     p_vout->i_white_pixel, p_vout->i_black_pixel, 0,
2001                     OUTLINED_TEXT, psz_text_1, 100 );
2002     }
2003     if( i_width_2 < p_vout->i_width )
2004     {
2005         vout_Print( p_vout->p_large_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
2006                     (p_vout->i_height - i_height + i_text_height) * p_vout->i_bytes_per_line,
2007                     p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
2008                     p_vout->i_white_pixel, p_vout->i_black_pixel, 0,
2009                     OUTLINED_TEXT, psz_text_2, 100 );
2010     }
2011
2012     /* Activate modified area */
2013     SetBufferArea( p_vout, 0, p_vout->i_height - i_height, p_vout->i_width, i_height );
2014 }
2015
2016 /*****************************************************************************
2017  * Synchronize: update synchro level depending of heap state
2018  *****************************************************************************
2019  * This function is called during the main vout loop.
2020  *****************************************************************************/
2021 static void Synchronize( vout_thread_t *p_vout, s64 i_delay )
2022 {
2023     int i_synchro_inc = 0;
2024     /* XXX?? gore following */
2025     static int i_panic_count = 0;
2026     static int i_last_synchro_inc = 0;
2027     static int i_synchro_level = VOUT_SYNCHRO_LEVEL_START;
2028     static int i_truc = 10;
2029
2030     if( i_delay < 0 )
2031     {
2032         //fprintf( stderr, "PANIC %d\n", i_panic_count );
2033         i_panic_count++;
2034     }
2035
2036     i_truc *= 2;
2037
2038     if( p_vout->i_pictures > VOUT_SYNCHRO_HEAP_IDEAL_SIZE+1 )
2039     {
2040         i_truc = 40;
2041         i_synchro_inc += p_vout->i_pictures - VOUT_SYNCHRO_HEAP_IDEAL_SIZE - 1;
2042
2043     }
2044     else
2045     {
2046         if( p_vout->i_pictures < VOUT_SYNCHRO_HEAP_IDEAL_SIZE )
2047         {
2048             i_truc = 32;
2049             i_synchro_inc += p_vout->i_pictures - VOUT_SYNCHRO_HEAP_IDEAL_SIZE;
2050         }
2051     }
2052
2053     if( i_truc > VOUT_SYNCHRO_LEVEL_MAX >> 5 ||
2054         i_synchro_inc*i_last_synchro_inc < 0 )
2055     {
2056         i_truc = 32;
2057     }
2058
2059     if( i_delay < 6000 )
2060     {
2061         i_truc = 16;
2062         i_synchro_inc -= 2;
2063     }
2064     else if( i_delay < 70000 )
2065     {
2066         i_truc = 24+(24*i_delay)/70000;
2067         if( i_truc < 16 )
2068             i_truc = 16;
2069         i_synchro_inc -= 1+(5*(70000-i_delay))/70000;
2070     }
2071     else if( i_delay > 100000 )
2072     {
2073         i_synchro_level += 1 << 10;
2074         if( i_delay > 130000 )
2075             i_synchro_level += 1 << 10;
2076     }
2077
2078     i_synchro_level += ( i_synchro_inc << 10 ) / i_truc;
2079     p_vout->i_synchro_level = ( i_synchro_level + (1 << 9) );
2080
2081     if( i_synchro_level > VOUT_SYNCHRO_LEVEL_MAX )
2082     {
2083         i_synchro_level = VOUT_SYNCHRO_LEVEL_MAX;
2084     }
2085
2086     //fprintf( stderr, "synchro level : %d, heap : %d (%d, %d) (%d, %f) - %Ld\n", p_vout->i_synchro_level,
2087     //        p_vout->i_pictures, i_last_synchro_inc, i_synchro_inc, i_truc, r_synchro_level, i_delay );
2088     i_last_synchro_inc = i_synchro_inc;
2089 }
2090
2091 /*****************************************************************************
2092  * Manage: manage thread
2093  *****************************************************************************
2094  * This function will handle changes in thread configuration.
2095  *****************************************************************************/
2096 static int Manage( vout_thread_t *p_vout )
2097 {
2098 #ifdef DEBUG_VIDEO
2099     if( p_vout->i_changes )
2100     {
2101         intf_DbgMsg("changes: 0x%x (no display: 0x%x)\n", p_vout->i_changes,
2102                     p_vout->i_changes & VOUT_NODISPLAY_CHANGE );
2103     }
2104 #endif
2105
2106     /* On gamma or grayscale change, rebuild tables */
2107     if( p_vout->i_changes & (VOUT_GAMMA_CHANGE | VOUT_GRAYSCALE_CHANGE |
2108                              VOUT_YUV_CHANGE) )
2109     {
2110         if( vout_ResetYUV( p_vout ) )
2111         {
2112             intf_ErrMsg("error: can't rebuild convertion tables\n");
2113             return( 1 );
2114         }
2115     }
2116
2117     /* Clear changes flags which does not need management or have been
2118      * handled */
2119     p_vout->i_changes &= ~(VOUT_GAMMA_CHANGE | VOUT_GRAYSCALE_CHANGE |
2120                            VOUT_YUV_CHANGE   | VOUT_INFO_CHANGE |
2121                            VOUT_INTF_CHANGE  | VOUT_SCALE_CHANGE );
2122
2123     /* Detect unauthorized changes */
2124     if( p_vout->i_changes )
2125     {
2126         /* Some changes were not acknowledged by p_vout->p_sys_manage or this
2127          * function, it means they should not be authorized */
2128         intf_ErrMsg( "error: unauthorized changes in the video output thread\n" );
2129         return( 1 );
2130     }
2131
2132     return( 0 );
2133 }
2134
2135 /*****************************************************************************
2136  * Align: align a subpicture in the screen
2137  *****************************************************************************
2138  * This function is used for rendering text or subpictures. It returns non 0
2139  * it the final aera is not fully included in display area. Return coordinates
2140  * are absolute.
2141  *****************************************************************************/
2142 static int Align( vout_thread_t *p_vout, int *pi_x, int *pi_y,
2143                    int i_width, int i_height, int i_h_align, int i_v_align )
2144 {
2145     /* Align horizontally */
2146     switch( i_h_align )
2147     {
2148     case CENTER_ALIGN:
2149         *pi_x -= i_width / 2;
2150         break;
2151     case CENTER_RALIGN:
2152         *pi_x += (p_vout->i_width - i_width) / 2;
2153         break;
2154     case RIGHT_ALIGN:
2155         *pi_x -= i_width;
2156         break;
2157     case RIGHT_RALIGN:
2158         *pi_x += p_vout->i_width - i_width;
2159         break;
2160     }
2161
2162     /* Align vertically */
2163     switch( i_v_align )
2164     {
2165     case CENTER_ALIGN:
2166         *pi_y -= i_height / 2;
2167         break;
2168     case CENTER_RALIGN:
2169         *pi_y += (p_vout->i_height - i_height) / 2;
2170         break;
2171     case BOTTOM_ALIGN:
2172         *pi_y -= i_height;
2173         break;
2174     case BOTTOM_RALIGN:
2175         *pi_y += p_vout->i_height - i_height;
2176         break;
2177     case SUBTITLE_RALIGN:
2178         *pi_y += (p_vout->i_height + p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_y +
2179                   p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_height - i_height) / 2;
2180         break;
2181     }
2182
2183     /* Return non 0 if clipping failed */
2184     return( (*pi_x < 0) || (*pi_y < 0) ||
2185             (*pi_x + i_width > p_vout->i_width) || (*pi_y + i_height > p_vout->i_height) );
2186 }
2187
2188 /*****************************************************************************
2189  * SetPalette: sets an 8 bpp palette
2190  *****************************************************************************
2191  * This function is just a prototype that does nothing. Architectures that
2192  * support palette allocation should override it.
2193  *****************************************************************************/
2194 static void     SetPalette        ( p_vout_thread_t p_vout, u16 *red,
2195                                     u16 *green, u16 *blue, u16 *transp )
2196 {
2197     intf_ErrMsg( "SetPalette: method does not support palette changing\n" );
2198 }
2199