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

   1 /*****************************************************************************
   2  * video_output.c : video output thread
   3  * This module describes the programming interface for video output threads.
   4  * It includes functions allowing to open a new thread, send pictures to a
   5  * thread, and destroy a previously oppened video output thread.
   6  *****************************************************************************
   7  * Copyright (C) 2000 VideoLAN
   8  *
   9  * Authors:
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  24  *****************************************************************************/
  25
  26 /*****************************************************************************
  27  * Preamble
  28  *****************************************************************************/
  29 #include "defs.h"
  30
  31 #include <errno.h>                                                 /* ENOMEM */
  32 #include <stdlib.h>                                                /* free() */
  33 #include <stdio.h>                                              /* sprintf() */
  34 #include <string.h>                                            /* strerror() */
  35
  36 #ifdef STATS
  37 #   include <sys/times.h>
  38 #endif
  39
  40 #include "config.h"
  41 #include "common.h"
  42 #include "threads.h"
  43 #include "mtime.h"
  44 #include "plugins.h"
  45 #include "video.h"
  46 #include "video_output.h"
  47 #include "video_text.h"
  48 #include "video_spu.h"
  49 #include "video_yuv.h"
  50
  51 #include "intf_msg.h"
  52 #include "main.h"
  53
  54 /*****************************************************************************
  55  * Local prototypes
  56  *****************************************************************************/
  57 static int      BinaryLog         ( u32 i );
  58 static void     MaskToShift       ( int *pi_left, int *pi_right, u32 i_mask );
  59 static int      InitThread        ( vout_thread_t *p_vout );
  60 static void     RunThread         ( vout_thread_t *p_vout );
  61 static void     ErrorThread       ( vout_thread_t *p_vout );
  62 static void     EndThread         ( vout_thread_t *p_vout );
  63 static void     DestroyThread     ( vout_thread_t *p_vout, int i_status );
  64 static void     Print             ( vout_thread_t *p_vout, int i_x, int i_y,
  65                                     int i_h_align, int i_v_align,
  66                                     unsigned char *psz_text );
  67 static void     SetBufferArea     ( vout_thread_t *p_vout, int i_x, int i_y,
  68                                     int i_w, int i_h );
  69 static void     SetBufferPicture  ( vout_thread_t *p_vout, picture_t *p_pic );
  70 static void     RenderPicture     ( vout_thread_t *p_vout, picture_t *p_pic );
  71 static void     RenderPictureInfo ( vout_thread_t *p_vout, picture_t *p_pic );
  72 static void     RenderSubPicture  ( vout_thread_t *p_vout,
  73                                     subpicture_t *p_subpic );
  74 static void     RenderInterface   ( vout_thread_t *p_vout );
  75 static int      RenderIdle        ( vout_thread_t *p_vout );
  76 static int      RenderSplash      ( vout_thread_t *p_vout );
  77 static void     RenderInfo        ( vout_thread_t *p_vout );
  78 static int      Manage            ( vout_thread_t *p_vout );
  79 static int      Align             ( vout_thread_t *p_vout, int *pi_x,
  80                                     int *pi_y, int i_width, int i_height,
  81                                     int i_h_align, int i_v_align );
  82 static void     SetPalette        ( p_vout_thread_t p_vout, u16 *red,
  83                                     u16 *green, u16 *blue, u16 *transp );
  84
  85 /*****************************************************************************
  86  * vout_CreateThread: creates a new video output thread
  87  *****************************************************************************
  88  * This function creates a new video output thread, and returns a pointer
  89  * to its description. On error, it returns NULL.
  90  * If pi_status is NULL, then the function will block until the thread is ready.
  91  * If not, it will be updated using one of the THREAD_* constants.
  92  *****************************************************************************/
  93 vout_thread_t * vout_CreateThread   ( char *psz_display, int i_root_window,
  94                           int i_width, int i_height, int *pi_status,
  95                           int i_method, void *p_data )
  96 {
  97     vout_thread_t * p_vout;                             /* thread descriptor */
  98     typedef void    ( vout_getplugin_t ) ( vout_thread_t * p_vout );
  99     int             i_status;                               /* thread status */
 100     int             i_index;               /* index for array initialization */
 101     int             i_best_index = 0, i_best_score = 0;
 102
 103     /* Allocate descriptor */
 104     intf_DbgMsg("\n");
 105     p_vout = (vout_thread_t *) malloc( sizeof(vout_thread_t) );
 106     if( p_vout == NULL )
 107     {
 108         intf_ErrMsg( "vout error: %s\n", strerror(ENOMEM) );
 109         return( NULL );
 110     }
 111
 112     p_vout->p_set_palette       = SetPalette;
 113
 114     /* Get a suitable video plugin */
 115     for( i_index = 0 ; i_index < p_main->p_bank->i_plugin_count ; i_index++ )
 116     {
 117         /* If there's a plugin in p_info ... */
 118         if( p_main->p_bank->p_info[ i_index ] != NULL )
 119         {
 120             /* ... and if this plugin provides the functions we want ... */
 121             if( p_main->p_bank->p_info[ i_index ]->vout_GetPlugin != NULL )
 122             {
 123                 /* ... and if this plugin has a good score ... */
 124                 if( p_main->p_bank->p_info[ i_index ]->i_score > i_best_score )
 125                 {
 126                     /* ... then take it */
 127                     i_best_score = p_main->p_bank->p_info[ i_index ]->i_score;
 128                     i_best_index = i_index;
 129                 }
 130             }
 131         }
 132     }
 133
 134     if( i_best_score == 0 )
 135     {
 136         free( p_vout );
 137         return( NULL );
 138     }
 139
 140     /* Get the plugin functions */
 141     ( (vout_getplugin_t *)
 142       p_main->p_bank->p_info[ i_best_index ]->vout_GetPlugin )( p_vout );
 143
 144     /* Initialize thread properties - thread id and locks will be initialized
 145      * later */
 146     p_vout->b_die               = 0;
 147     p_vout->b_error             = 0;
 148     p_vout->b_active            = 0;
 149     p_vout->pi_status           = (pi_status != NULL) ? pi_status : &i_status;
 150     *p_vout->pi_status          = THREAD_CREATE;
 151
 152     /* Initialize some fields used by the system-dependant method - these
 153      * fields will probably be modified by the method, and are only
 154      * preferences */
 155     p_vout->i_changes             = 0;
 156     p_vout->i_width               = i_width;
 157     p_vout->i_height              = i_height;
 158     p_vout->i_bytes_per_line      = i_width * 2;
 159     p_vout->i_screen_depth        = 15;
 160     p_vout->i_bytes_per_pixel     = 2;
 161     p_vout->f_gamma               = VOUT_GAMMA;
 162     p_vout->b_need_render         = 1;
 163
 164     p_vout->b_grayscale           = main_GetIntVariable( VOUT_GRAYSCALE_VAR,
 165                                                        VOUT_GRAYSCALE_DEFAULT );
 166     p_vout->b_info                = 0;
 167     p_vout->b_interface           = 0;
 168     p_vout->b_scale               = 1;
 169
 170     intf_DbgMsg( "wished configuration: %dx%d, %d/%d bpp (%d Bpl)\n",
 171                  p_vout->i_width, p_vout->i_height, p_vout->i_screen_depth,
 172                  p_vout->i_bytes_per_pixel * 8, p_vout->i_bytes_per_line );
 173
 174     /* Initialize idle screen */
 175     p_vout->last_display_date   = 0;
 176     p_vout->last_idle_date      = 0;
 177     p_vout->init_display_date   = mdate();
 178     p_vout->render_time         = 10000;
 179
 180     /* Initialize statistics fields */
 181     p_vout->c_fps_samples       = 0;
 182
 183     /* Initialize buffer index */
 184     p_vout->i_buffer_index      = 0;
 185
 186     /* Initialize pictures and subpictures - translation tables and functions
 187      * will be initialized later in InitThread */
 188     for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++)
 189     {
 190         p_vout->p_picture[i_index].i_type   =   EMPTY_PICTURE;
 191         p_vout->p_picture[i_index].i_status =   FREE_PICTURE;
 192     }
 193     for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++)
 194     {
 195         p_vout->p_subpicture[i_index].i_type  = EMPTY_SUBPICTURE;
 196         p_vout->p_subpicture[i_index].i_status= FREE_SUBPICTURE;
 197     }
 198     p_vout->i_pictures = 0;
 199
 200     /* Create and initialize system-dependant method - this function issues its
 201      * own error messages */
 202     if( p_vout->p_sys_create( p_vout, psz_display, i_root_window, p_data ) )
 203     {
 204         free( p_vout );
 205         return( NULL );
 206     }
 207     intf_DbgMsg( "actual configuration: %dx%d, %d/%d bpp (%d Bpl), "
 208                  "masks: 0x%x/0x%x/0x%x\n",
 209                  p_vout->i_width, p_vout->i_height, p_vout->i_screen_depth,
 210                  p_vout->i_bytes_per_pixel * 8, p_vout->i_bytes_per_line,
 211                  p_vout->i_red_mask, p_vout->i_green_mask,
 212                  p_vout->i_blue_mask );
 213
 214     /* Calculate shifts from system-updated masks */
 215     MaskToShift( &p_vout->i_red_lshift, &p_vout->i_red_rshift,
 216                  p_vout->i_red_mask );
 217     MaskToShift( &p_vout->i_green_lshift, &p_vout->i_green_rshift,
 218                  p_vout->i_green_mask );
 219     MaskToShift( &p_vout->i_blue_lshift, &p_vout->i_blue_rshift,
 220                  p_vout->i_blue_mask );
 221
 222     /* Set some useful colors */
 223     p_vout->i_white_pixel = RGB2PIXEL( p_vout, 255, 255, 255 );
 224     p_vout->i_black_pixel = RGB2PIXEL( p_vout, 0, 0, 0 );
 225     p_vout->i_gray_pixel  = RGB2PIXEL( p_vout, 128, 128, 128 );
 226     p_vout->i_blue_pixel  = RGB2PIXEL( p_vout, 0, 0, 50 );
 227
 228     /* Load fonts - fonts must be initialized after the system method since
 229      * they may be dependant on screen depth and other thread properties */
 230     p_vout->p_default_font = vout_LoadFont( DATA_PATH "/" VOUT_DEFAULT_FONT );
 231     if( p_vout->p_default_font == NULL )
 232     {
 233         p_vout->p_default_font = vout_LoadFont( "share/" VOUT_DEFAULT_FONT );
 234     }
 235     if( p_vout->p_default_font == NULL )
 236     {
 237         intf_ErrMsg( "vout error: could not load default font\n" );
 238         p_vout->p_sys_destroy( p_vout );
 239         free( p_vout );
 240         return( NULL );
 241     }
 242     p_vout->p_large_font = vout_LoadFont( DATA_PATH "/" VOUT_LARGE_FONT );
 243     if( p_vout->p_large_font == NULL )
 244     {
 245         p_vout->p_large_font = vout_LoadFont( "share/" VOUT_LARGE_FONT );
 246     }
 247     if( p_vout->p_large_font == NULL )
 248     {
 249         intf_ErrMsg( "vout error: could not load large font\n" );
 250         vout_UnloadFont( p_vout->p_default_font );
 251         p_vout->p_sys_destroy( p_vout );
 252         free( p_vout );
 253         return( NULL );
 254     }
 255
 256     /* Create thread and set locks */
 257     vlc_mutex_init( &p_vout->picture_lock );
 258     vlc_mutex_init( &p_vout->subpicture_lock );
 259     vlc_mutex_init( &p_vout->change_lock );
 260     vlc_mutex_lock( &p_vout->change_lock );
 261     if( vlc_thread_create( &p_vout->thread_id, "video output",
 262                            (void *) RunThread, (void *) p_vout) )
 263     {
 264         intf_ErrMsg("vout error: %s\n", strerror(ENOMEM));
 265         vout_UnloadFont( p_vout->p_default_font );
 266         vout_UnloadFont( p_vout->p_large_font );
 267         p_vout->p_sys_destroy( p_vout );
 268         free( p_vout );
 269         return( NULL );
 270     }
 271
 272     intf_Msg( "Video display initialized (%dx%d, %d/%d bpp)\n", p_vout->i_width,
 273               p_vout->i_height, p_vout->i_screen_depth,
 274               p_vout->i_bytes_per_pixel * 8 );
 275
 276     /* If status is NULL, wait until the thread is created */
 277     if( pi_status == NULL )
 278     {
 279         do
 280         {
 281             msleep( THREAD_SLEEP );
 282         }while( (i_status != THREAD_READY) && (i_status != THREAD_ERROR)
 283                 && (i_status != THREAD_FATAL) );
 284         if( i_status != THREAD_READY )
 285         {
 286             return( NULL );
 287         }
 288     }
 289     return( p_vout );
 290 }
 291
 292 /*****************************************************************************
 293  * vout_DestroyThread: destroys a previously created thread
 294  *****************************************************************************
 295  * Destroy a terminated thread.
 296  * The function will request a destruction of the specified thread. If pi_error
 297  * is NULL, it will return once the thread is destroyed. Else, it will be
 298  * update using one of the THREAD_* constants.
 299  *****************************************************************************/
 300 void vout_DestroyThread( vout_thread_t *p_vout, int *pi_status )
 301 {
 302     int     i_status;                                       /* thread status */
 303
 304     /* Set status */
 305     intf_DbgMsg("\n");
 306     p_vout->pi_status = (pi_status != NULL) ? pi_status : &i_status;
 307     *p_vout->pi_status = THREAD_DESTROY;
 308
 309     /* Request thread destruction */
 310     p_vout->b_die = 1;
 311
 312     /* If status is NULL, wait until thread has been destroyed */
 313     if( pi_status == NULL )
 314     {
 315         do
 316         {
 317             msleep( THREAD_SLEEP );
 318         }while( (i_status != THREAD_OVER) && (i_status != THREAD_ERROR)
 319                 && (i_status != THREAD_FATAL) );
 320     }
 321 }
 322
 323 /*****************************************************************************
 324  * vout_DisplaySubPicture: display a subpicture unit
 325  *****************************************************************************
 326  * Remove the reservation flag of an subpicture, which will cause it to be ready
 327  * for display. The picture does not need to be locked, since it is ignored by
 328  * the output thread if is reserved.
 329  *****************************************************************************/
 330 void  vout_DisplaySubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
 331 {
 332 #ifdef DEBUG_VOUT
 333     char        psz_begin_date[MSTRTIME_MAX_SIZE]; /* buffer for date string */
 334     char        psz_end_date[MSTRTIME_MAX_SIZE];   /* buffer for date string */
 335 #endif
 336
 337 #ifdef DEBUG
 338     /* Check if status is valid */
 339     if( p_subpic->i_status != RESERVED_SUBPICTURE )
 340     {
 341         intf_DbgMsg("error: subpicture %p has invalid status %d\n", p_subpic,
 342                     p_subpic->i_status );
 343     }
 344 #endif
 345
 346     /* Remove reservation flag */
 347     p_subpic->i_status = READY_SUBPICTURE;
 348
 349 #ifdef DEBUG_VOUT
 350     /* Send subpicture information */
 351     intf_DbgMsg("subpicture %p: type=%d, begin date=%s, end date=%s\n",
 352                 p_subpic, p_subpic->i_type,
 353                 mstrtime( psz_begin_date, p_subpic->begin_date ),
 354                 mstrtime( psz_end_date, p_subpic->end_date ) );
 355 #endif
 356 }
 357
 358 /*****************************************************************************
 359  * vout_CreateSubPicture: allocate a subpicture in the video output heap.
 360  *****************************************************************************
 361  * This function create a reserved subpicture in the video output heap.
 362  * A null pointer is returned if the function fails. This method provides an
 363  * already allocated zone of memory in the spu data fields. It needs locking
 364  * since several pictures can be created by several producers threads.
 365  *****************************************************************************/
 366 subpicture_t *vout_CreateSubPicture( vout_thread_t *p_vout, int i_type,
 367                                      int i_size )
 368 {
 369     int                 i_subpic;                        /* subpicture index */
 370     subpicture_t *      p_free_subpic = NULL;       /* first free subpicture */
 371     subpicture_t *      p_destroyed_subpic = NULL; /* first destroyed subpic */
 372
 373     /* Get lock */
 374     vlc_mutex_lock( &p_vout->subpicture_lock );
 375
 376     /*
 377      * Look for an empty place
 378      */
 379     for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
 380     {
 381         if( p_vout->p_subpicture[i_subpic].i_status == DESTROYED_SUBPICTURE )
 382         {
 383             /* Subpicture is marked for destruction, but is still allocated */
 384             if( (p_vout->p_subpicture[i_subpic].i_type  == i_type)   &&
 385                 (p_vout->p_subpicture[i_subpic].i_size  >= i_size) )
 386             {
 387                 /* Memory size do match or is smaller : memory will not be
 388                  * reallocated, and function can end immediately - this is
 389                  * the best possible case, since no memory allocation needs
 390                  * to be done */
 391                 p_vout->p_subpicture[i_subpic].i_status = RESERVED_SUBPICTURE;
 392 #ifdef DEBUG_VOUT
 393                 intf_DbgMsg("subpicture %p (in destroyed subpicture slot)\n",
 394                             &p_vout->p_subpicture[i_subpic] );
 395 #endif
 396                 vlc_mutex_unlock( &p_vout->subpicture_lock );
 397                 return( &p_vout->p_subpicture[i_subpic] );
 398             }
 399             else if( p_destroyed_subpic == NULL )
 400             {
 401                 /* Memory size do not match, but subpicture index will be kept in
 402                  * case no other place are left */
 403                 p_destroyed_subpic = &p_vout->p_subpicture[i_subpic];
 404             }
 405         }
 406         else if( (p_free_subpic == NULL) &&
 407                  (p_vout->p_subpicture[i_subpic].i_status == FREE_SUBPICTURE ))
 408         {
 409             /* Subpicture is empty and ready for allocation */
 410             p_free_subpic = &p_vout->p_subpicture[i_subpic];
 411         }
 412     }
 413
 414     /* If no free subpictures are available, use a destroyed subpicture */
 415     if( (p_free_subpic == NULL) && (p_destroyed_subpic != NULL ) )
 416     {
 417         /* No free subpicture or matching destroyed subpictures have been
 418          * found, but a destroyed subpicture is still avalaible */
 419         free( p_destroyed_subpic->p_data );
 420         p_free_subpic = p_destroyed_subpic;
 421     }
 422
 423     /*
 424      * Prepare subpicture
 425      */
 426     if( p_free_subpic != NULL )
 427     {
 428         /* Allocate memory */
 429         switch( i_type )
 430         {
 431         case TEXT_SUBPICTURE:                             /* text subpicture */
 432             p_free_subpic->p_data = malloc( i_size + 1 );
 433             break;
 434         case DVD_SUBPICTURE:                          /* DVD subpicture unit */
 435             p_free_subpic->p_data = malloc( i_size );
 436             break;
 437 #ifdef DEBUG
 438         default:
 439             intf_DbgMsg("error: unknown subpicture type %d\n", i_type );
 440             p_free_subpic->p_data   =  NULL;
 441             break;
 442 #endif
 443         }
 444
 445         if( p_free_subpic->p_data != NULL )
 446         {
 447             /* Copy subpicture information, set some default values */
 448             p_free_subpic->i_type                      = i_type;
 449             p_free_subpic->i_status                    = RESERVED_SUBPICTURE;
 450             p_free_subpic->i_size                      = i_size;
 451             p_free_subpic->i_x                         = 0;
 452             p_free_subpic->i_y                         = 0;
 453             p_free_subpic->i_width                     = 0;
 454             p_free_subpic->i_height                    = 0;
 455             p_free_subpic->i_horizontal_align          = CENTER_RALIGN;
 456             p_free_subpic->i_vertical_align            = CENTER_RALIGN;
 457         }
 458         else
 459         {
 460             /* Memory allocation failed : set subpicture as empty */
 461             p_free_subpic->i_type   =  EMPTY_SUBPICTURE;
 462             p_free_subpic->i_status =  FREE_SUBPICTURE;
 463             p_free_subpic =            NULL;
 464             intf_ErrMsg("spu warning: %s\n", strerror( ENOMEM ) );
 465         }
 466
 467 #ifdef DEBUG_VOUT
 468         intf_DbgMsg("subpicture %p (in free subpicture slot)\n", p_free_subpic );
 469 #endif
 470         vlc_mutex_unlock( &p_vout->subpicture_lock );
 471         return( p_free_subpic );
 472     }
 473
 474     /* No free or destroyed subpicture could be found */
 475     intf_DbgMsg( "warning: subpicture heap is full\n" );
 476     vlc_mutex_unlock( &p_vout->subpicture_lock );
 477     return( NULL );
 478 }
 479
 480 /*****************************************************************************
 481  * vout_DestroySubPicture: remove a subpicture from the heap
 482  *****************************************************************************
 483  * This function frees a previously reserved subpicture.
 484  * It is meant to be used when the construction of a picture aborted.
 485  * This function does not need locking since reserved subpictures are ignored
 486  * by the output thread.
 487  *****************************************************************************/
 488 void vout_DestroySubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
 489 {
 490 #ifdef DEBUG
 491    /* Check if status is valid */
 492    if( p_subpic->i_status != RESERVED_SUBPICTURE )
 493    {
 494        intf_DbgMsg("error: subpicture %p has invalid status %d\n",
 495                    p_subpic, p_subpic->i_status );
 496    }
 497 #endif
 498
 499     p_subpic->i_status = DESTROYED_SUBPICTURE;
 500
 501 #ifdef DEBUG_VOUT
 502     intf_DbgMsg("subpicture %p\n", p_subpic);
 503 #endif
 504 }
 505
 506 /*****************************************************************************
 507  * vout_DisplayPicture: display a picture
 508  *****************************************************************************
 509  * Remove the reservation flag of a picture, which will cause it to be ready for
 510  * display. The picture won't be displayed until vout_DatePicture has been
 511  * called.
 512  *****************************************************************************/
 513 void  vout_DisplayPicture( vout_thread_t *p_vout, picture_t *p_pic )
 514 {
 515     vlc_mutex_lock( &p_vout->picture_lock );
 516     switch( p_pic->i_status )
 517     {
 518     case RESERVED_PICTURE:
 519         p_pic->i_status = RESERVED_DISP_PICTURE;
 520         break;
 521     case RESERVED_DATED_PICTURE:
 522         p_pic->i_status = READY_PICTURE;
 523         break;
 524 #ifdef DEBUG
 525     default:
 526         intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status );
 527         break;
 528 #endif
 529     }
 530
 531 #ifdef DEBUG_VOUT
 532     intf_DbgMsg("picture %p\n", p_pic);
 533 #endif
 534     vlc_mutex_unlock( &p_vout->picture_lock );
 535 }
 536
 537 /*****************************************************************************
 538  * vout_DatePicture: date a picture
 539  *****************************************************************************
 540  * Remove the reservation flag of a picture, which will cause it to be ready for
 541  * display. The picture won't be displayed until vout_DisplayPicture has been
 542  * called.
 543  *****************************************************************************/
 544 void  vout_DatePicture( vout_thread_t *p_vout, picture_t *p_pic, mtime_t date )
 545 {
 546 #ifdef DEBUG_VOUT
 547     char        psz_date[MSTRTIME_MAX_SIZE];                         /* date */
 548 #endif
 549
 550     vlc_mutex_lock( &p_vout->picture_lock );
 551     p_pic->date = date;
 552     switch( p_pic->i_status )
 553     {
 554     case RESERVED_PICTURE:
 555         p_pic->i_status = RESERVED_DATED_PICTURE;
 556         break;
 557     case RESERVED_DISP_PICTURE:
 558         p_pic->i_status = READY_PICTURE;
 559         break;
 560 #ifdef DEBUG
 561     default:
 562         intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status );
 563         break;
 564 #endif
 565     }
 566
 567 #ifdef DEBUG_VOUT
 568     intf_DbgMsg("picture %p, display date: %s\n", p_pic, mstrtime( psz_date, p_pic->date) );
 569 #endif
 570     vlc_mutex_unlock( &p_vout->picture_lock );
 571 }
 572
 573 /*****************************************************************************
 574  * vout_CreatePicture: allocate a picture in the video output heap.
 575  *****************************************************************************
 576  * This function create a reserved image in the video output heap.
 577  * A null pointer is returned if the function fails. This method provides an
 578  * already allocated zone of memory in the picture data fields. It needs locking
 579  * since several pictures can be created by several producers threads.
 580  *****************************************************************************/
 581 picture_t *vout_CreatePicture( vout_thread_t *p_vout, int i_type,
 582                                int i_width, int i_height )
 583 {
 584     int         i_picture;                                  /* picture index */
 585     int         i_chroma_width = 0;                          /* chroma width */
 586     picture_t * p_free_picture = NULL;                 /* first free picture */
 587     picture_t * p_destroyed_picture = NULL;       /* first destroyed picture */
 588
 589     /* Get lock */
 590     vlc_mutex_lock( &p_vout->picture_lock );
 591
 592     /*
 593      * Look for an empty place
 594      */
 595     for( i_picture = 0; i_picture < VOUT_MAX_PICTURES; i_picture++ )
 596     {
 597         if( p_vout->p_picture[i_picture].i_status == DESTROYED_PICTURE )
 598         {
 599             /* Picture is marked for destruction, but is still allocated - note
 600              * that if width and type are the same for two pictures, chroma_width
 601              * should also be the same */
 602             if( (p_vout->p_picture[i_picture].i_type           == i_type)   &&
 603                 (p_vout->p_picture[i_picture].i_height         == i_height) &&
 604                 (p_vout->p_picture[i_picture].i_width          == i_width) )
 605             {
 606                 /* Memory size do match : memory will not be reallocated, and function
 607                  * can end immediately - this is the best possible case, since no
 608                  * memory allocation needs to be done */
 609                 p_vout->p_picture[i_picture].i_status = RESERVED_PICTURE;
 610                 p_vout->i_pictures++;
 611 #ifdef DEBUG_VOUT
 612                 intf_DbgMsg("picture %p (in destroyed picture slot)\n",
 613                             &p_vout->p_picture[i_picture] );
 614 #endif
 615                 vlc_mutex_unlock( &p_vout->picture_lock );
 616                 return( &p_vout->p_picture[i_picture] );
 617             }
 618             else if( p_destroyed_picture == NULL )
 619             {
 620                 /* Memory size do not match, but picture index will be kept in
 621                  * case no other place are left */
 622                 p_destroyed_picture = &p_vout->p_picture[i_picture];
 623             }
 624         }
 625         else if( (p_free_picture == NULL) &&
 626                  (p_vout->p_picture[i_picture].i_status == FREE_PICTURE ))
 627         {
 628             /* Picture is empty and ready for allocation */
 629             p_free_picture = &p_vout->p_picture[i_picture];
 630         }
 631     }
 632
 633     /* If no free picture is available, use a destroyed picture */
 634     if( (p_free_picture == NULL) && (p_destroyed_picture != NULL ) )
 635     {
 636         /* No free picture or matching destroyed picture has been found, but
 637          * a destroyed picture is still avalaible */
 638         free( p_destroyed_picture->p_data );
 639         p_free_picture = p_destroyed_picture;
 640     }
 641
 642     /*
 643      * Prepare picture
 644      */
 645     if( p_free_picture != NULL )
 646     {
 647         /* Allocate memory */
 648         switch( i_type )
 649         {
 650         case YUV_420_PICTURE:        /* YUV 420: 1,1/4,1/4 samples per pixel */
 651             i_chroma_width = i_width / 2;
 652             p_free_picture->p_data = malloc( i_height * i_chroma_width * 3 * sizeof( yuv_data_t ) );
 653             p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
 654             p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*4/2;
 655             p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*5/2;
 656             break;
 657         case YUV_422_PICTURE:        /* YUV 422: 1,1/2,1/2 samples per pixel */
 658             i_chroma_width = i_width / 2;
 659             p_free_picture->p_data = malloc( i_height * i_chroma_width * 4 * sizeof( yuv_data_t ) );
 660             p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
 661             p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*2;
 662             p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*3;
 663             break;
 664         case YUV_444_PICTURE:            /* YUV 444: 1,1,1 samples per pixel */
 665             i_chroma_width = i_width;
 666             p_free_picture->p_data = malloc( i_height * i_chroma_width * 3 * sizeof( yuv_data_t ) );
 667             p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
 668             p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width;
 669             p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*2;
 670             break;
 671 #ifdef DEBUG
 672         default:
 673             intf_DbgMsg("error: unknown picture type %d\n", i_type );
 674             p_free_picture->p_data   =  NULL;
 675             break;
 676 #endif
 677         }
 678
 679         if( p_free_picture->p_data != NULL )
 680         {
 681             /* Copy picture information, set some default values */
 682             p_free_picture->i_type                      = i_type;
 683             p_free_picture->i_status                    = RESERVED_PICTURE;
 684             p_free_picture->i_matrix_coefficients       = 1;
 685             p_free_picture->i_width                     = i_width;
 686             p_free_picture->i_height                    = i_height;
 687             p_free_picture->i_chroma_width              = i_chroma_width;
 688             p_free_picture->i_display_horizontal_offset = 0;
 689             p_free_picture->i_display_vertical_offset   = 0;
 690             p_free_picture->i_display_width             = i_width;
 691             p_free_picture->i_display_height            = i_height;
 692             p_free_picture->i_aspect_ratio              = AR_SQUARE_PICTURE;
 693             p_free_picture->i_refcount                  = 0;
 694             p_vout->i_pictures++;
 695         }
 696         else
 697         {
 698             /* Memory allocation failed : set picture as empty */
 699             p_free_picture->i_type   =  EMPTY_PICTURE;
 700             p_free_picture->i_status =  FREE_PICTURE;
 701             p_free_picture =            NULL;
 702             intf_ErrMsg( "vout warning: %s\n", strerror( ENOMEM ) );
 703         }
 704
 705 #ifdef DEBUG_VOUT
 706         intf_DbgMsg("picture %p (in free picture slot)\n", p_free_picture );
 707 #endif
 708         vlc_mutex_unlock( &p_vout->picture_lock );
 709         return( p_free_picture );
 710     }
 711
 712     /* No free or destroyed picture could be found */
 713     intf_DbgMsg( "warning: picture heap is full\n" );
 714     vlc_mutex_unlock( &p_vout->picture_lock );
 715     return( NULL );
 716 }
 717
 718 /*****************************************************************************
 719  * vout_DestroyPicture: remove a permanent or reserved picture from the heap
 720  *****************************************************************************
 721  * This function frees a previously reserved picture or a permanent
 722  * picture. It is meant to be used when the construction of a picture aborted.
 723  * Note that the picture will be destroyed even if it is linked !
 724  *****************************************************************************/
 725 void vout_DestroyPicture( vout_thread_t *p_vout, picture_t *p_pic )
 726 {
 727    vlc_mutex_lock( &p_vout->picture_lock );
 728
 729 #ifdef DEBUG
 730    /* Check if picture status is valid */
 731    if( (p_pic->i_status != RESERVED_PICTURE) &&
 732        (p_pic->i_status != RESERVED_DATED_PICTURE) &&
 733        (p_pic->i_status != RESERVED_DISP_PICTURE) )
 734    {
 735        intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status );
 736    }
 737 #endif
 738
 739    p_pic->i_status = DESTROYED_PICTURE;
 740    p_vout->i_pictures--;
 741
 742 #ifdef DEBUG_VOUT
 743    intf_DbgMsg("picture %p\n", p_pic);
 744 #endif
 745    vlc_mutex_unlock( &p_vout->picture_lock );
 746 }
 747
 748 /*****************************************************************************
 749  * vout_LinkPicture: increment reference counter of a picture
 750  *****************************************************************************
 751  * This function increment the reference counter of a picture in the video
 752  * heap. It needs a lock since several producer threads can access the picture.
 753  *****************************************************************************/
 754 void vout_LinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
 755 {
 756     vlc_mutex_lock( &p_vout->picture_lock );
 757     p_pic->i_refcount++;
 758
 759 #ifdef DEBUG_VOUT
 760     intf_DbgMsg("picture %p refcount=%d\n", p_pic, p_pic->i_refcount );
 761 #endif
 762
 763     vlc_mutex_unlock( &p_vout->picture_lock );
 764 }
 765
 766 /*****************************************************************************
 767  * vout_UnlinkPicture: decrement reference counter of a picture
 768  *****************************************************************************
 769  * This function decrement the reference counter of a picture in the video heap.
 770  *****************************************************************************/
 771 void vout_UnlinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
 772 {
 773     vlc_mutex_lock( &p_vout->picture_lock );
 774     p_pic->i_refcount--;
 775
 776 #ifdef DEBUG_VOUT
 777     if( p_pic->i_refcount < 0 )
 778     {
 779         intf_DbgMsg("error: refcount < 0\n");
 780         p_pic->i_refcount = 0;
 781     }
 782 #endif
 783
 784     if( (p_pic->i_refcount == 0) && (p_pic->i_status == DISPLAYED_PICTURE) )
 785     {
 786         p_pic->i_status = DESTROYED_PICTURE;
 787         p_vout->i_pictures--;
 788     }
 789
 790 #ifdef DEBUG_VOUT
 791     intf_DbgMsg("picture %p refcount=%d\n", p_pic, p_pic->i_refcount );
 792 #endif
 793
 794     vlc_mutex_unlock( &p_vout->picture_lock );
 795 }
 796
 797 /*****************************************************************************
 798  * vout_SetBuffers: set buffers adresses
 799  *****************************************************************************
 800  * This function is called by system drivers to set buffers video memory
 801  * adresses.
 802  *****************************************************************************/
 803 void vout_SetBuffers( vout_thread_t *p_vout, void *p_buf1, void *p_buf2 )
 804 {
 805     /* No picture previously */
 806     p_vout->p_buffer[0].i_pic_x =         0;
 807     p_vout->p_buffer[0].i_pic_y =         0;
 808     p_vout->p_buffer[0].i_pic_width =     0;
 809     p_vout->p_buffer[0].i_pic_height =    0;
 810     p_vout->p_buffer[1].i_pic_x =         0;
 811     p_vout->p_buffer[1].i_pic_y =         0;
 812     p_vout->p_buffer[1].i_pic_width =     0;
 813     p_vout->p_buffer[1].i_pic_height =    0;
 814
 815     /* The first area covers all the screen */
 816     p_vout->p_buffer[0].i_areas =                 1;
 817     p_vout->p_buffer[0].pi_area_begin[0] =        0;
 818     p_vout->p_buffer[0].pi_area_end[0] =          p_vout->i_height - 1;
 819     p_vout->p_buffer[1].i_areas =                 1;
 820     p_vout->p_buffer[1].pi_area_begin[0] =        0;
 821     p_vout->p_buffer[1].pi_area_end[0] =          p_vout->i_height - 1;
 822
 823     /* Set adresses */
 824     p_vout->p_buffer[0].p_data = p_buf1;
 825     p_vout->p_buffer[1].p_data = p_buf2;
 826 }
 827
 828 /*****************************************************************************
 829  * vout_Pixel2RGB: return red, green and blue from pixel value
 830  *****************************************************************************
 831  * Return color values, in 0-255 range, of the decomposition of a pixel. This
 832  * is a slow routine and should only be used for initialization phase.
 833  *****************************************************************************/
 834 void vout_Pixel2RGB( vout_thread_t *p_vout, u32 i_pixel, int *pi_red, int *pi_green, int *pi_blue )
 835 {
 836     *pi_red =   i_pixel & p_vout->i_red_mask;
 837     *pi_green = i_pixel & p_vout->i_green_mask;
 838     *pi_blue =  i_pixel & p_vout->i_blue_mask;
 839 }
 840
 841 /* following functions are local */
 842
 843 /*****************************************************************************
 844  * BinaryLog: computes the base 2 log of a binary value
 845  *****************************************************************************
 846  * This functions is used by MaskToShift, to get a bit index from a binary
 847  * value.
 848  *****************************************************************************/
 849 static int BinaryLog(u32 i)
 850 {
 851     int i_log;
 852
 853     i_log = 0;
 854     if (i & 0xffff0000)
 855     {
 856         i_log = 16;
 857     }
 858     if (i & 0xff00ff00)
 859     {
 860         i_log += 8;
 861     }
 862     if (i & 0xf0f0f0f0)
 863     {
 864         i_log += 4;
 865     }
 866     if (i & 0xcccccccc)
 867     {
 868         i_log += 2;
 869     }
 870     if (i & 0xaaaaaaaa)
 871     {
 872         i_log++;
 873     }
 874     if (i != ((u32)1 << i_log))
 875     {
 876         intf_DbgMsg("internal error: binary log overflow\n");
 877     }
 878
 879     return( i_log );
 880 }
 881
 882 /*****************************************************************************
 883  * MaskToShift: transform a color mask into right and left shifts
 884  *****************************************************************************
 885  * This function is used for obtaining color shifts from masks.
 886  *****************************************************************************/
 887 static void MaskToShift( int *pi_left, int *pi_right, u32 i_mask )
 888 {
 889     u32 i_low, i_high;                 /* lower hand higher bits of the mask */
 890
 891     /* Get bits */
 892     i_low =  i_mask & (- i_mask);                   /* lower bit of the mask */
 893     i_high = i_mask + i_low;                       /* higher bit of the mask */
 894
 895     /* Transform bits into an index */
 896     i_low =  BinaryLog (i_low);
 897     i_high = BinaryLog (i_high);
 898
 899     /* Update pointers and return */
 900     *pi_left =   i_low;
 901     *pi_right = (8 - i_high + i_low);
 902 }
 903
 904 /*****************************************************************************
 905  * InitThread: initialize video output thread
 906  *****************************************************************************
 907  * This function is called from RunThread and performs the second step of the
 908  * initialization. It returns 0 on success. Note that the thread's flag are not
 909  * modified inside this function.
 910  *****************************************************************************/
 911 static int InitThread( vout_thread_t *p_vout )
 912 {
 913     /* Update status */
 914     intf_DbgMsg("\n");
 915     *p_vout->pi_status = THREAD_START;
 916
 917 #ifdef STATS
 918     p_vout->c_loops = 0;
 919 #endif
 920
 921    /* Initialize output method - this function issues its own error messages */
 922     if( p_vout->p_sys_init( p_vout ) )
 923     {
 924         return( 1 );
 925     }
 926
 927     if( p_vout->b_need_render )
 928     {
 929         /* Initialize convertion tables and functions */
 930         if( vout_InitYUV( p_vout ) )
 931         {
 932             intf_ErrMsg("error: can't allocate YUV translation tables\n");
 933             return( 1 );
 934         }
 935     }
 936
 937     /* Mark thread as running and return */
 938     p_vout->b_active =          1;
 939     *p_vout->pi_status =        THREAD_READY;
 940
 941
 942     intf_DbgMsg("thread ready\n");
 943     return( 0 );
 944 }
 945
 946 /*****************************************************************************
 947  * RunThread: video output thread
 948  *****************************************************************************
 949  * Video output thread. This function does only returns when the thread is
 950  * terminated. It handles the pictures arriving in the video heap and the
 951  * display device events.
 952  *****************************************************************************/
 953 static void RunThread( vout_thread_t *p_vout)
 954 {
 955     int             i_index;                                /* index in heap */
 956     mtime_t         current_date;                            /* current date */
 957     mtime_t         display_date;                            /* display date */
 958     boolean_t       b_display;                               /* display flag */
 959     picture_t *     p_pic;                                /* picture pointer */
 960     subpicture_t *  p_subpic;                          /* subpicture pointer */
 961
 962     /*
 963      * Initialize thread
 964      */
 965     p_vout->b_error = InitThread( p_vout );
 966     if( p_vout->b_error )
 967     {
 968         DestroyThread( p_vout, THREAD_ERROR );
 969         return;
 970     }
 971     intf_DbgMsg("\n");
 972
 973     /*
 974      * Main loop - it is not executed if an error occured during
 975      * initialization
 976      */
 977     while( (!p_vout->b_die) && (!p_vout->b_error) )
 978     {
 979         /* Initialize loop variables */
 980         p_pic =         NULL;
 981         p_subpic =      NULL;
 982         display_date =  0;
 983         current_date =  mdate();
 984 #ifdef STATS
 985         p_vout->c_loops++;
 986         if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
 987         {
 988             intf_Msg("vout stats: picture heap: %d/%d\n",
 989                      p_vout->i_pictures, VOUT_MAX_PICTURES);
 990         }
 991 #endif
 992
 993         /*
 994          * Find the picture to display - this operation does not need lock,
 995          * since only READY_PICTUREs are handled
 996          */
 997         for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++ )
 998         {
 999             if( (p_vout->p_picture[i_index].i_status == READY_PICTURE) &&
1000             ( (p_pic == NULL) ||
1001               (p_vout->p_picture[i_index].date < display_date) ) )
1002             {
1003                 p_pic = &p_vout->p_picture[i_index];
1004                 display_date = p_pic->date;
1005             }
1006         }
1007
1008         if( p_pic )
1009         {
1010             /* Computes FPS rate */
1011             p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ] = display_date;
1012
1013             if( display_date < current_date - p_vout->render_time )
1014             {
1015                 /* Picture is late: it will be destroyed and the thread
1016                  * will sleep and go to next picture */
1017
1018                 vlc_mutex_lock( &p_vout->picture_lock );
1019                 if( p_pic->i_refcount )
1020                 {
1021                     p_pic->i_status = DISPLAYED_PICTURE;
1022                 }
1023                 else
1024                 {
1025                     p_pic->i_status = DESTROYED_PICTURE;
1026                     p_vout->i_pictures--;
1027                 }
1028                 intf_WarnMsg( 3,
1029                         "warning: late picture skipped (%p)\n", p_pic );
1030                 vlc_mutex_unlock( &p_vout->picture_lock );
1031
1032                 continue;
1033             }
1034             else if( display_date > current_date + VOUT_DISPLAY_DELAY )
1035             {
1036                 /* A picture is ready to be rendered, but its rendering date
1037                  * is far from the current one so the thread will perform an
1038                  * empty loop as if no picture were found. The picture state
1039                  * is unchanged */
1040                 p_pic =         NULL;
1041                 display_date =  0;
1042             }
1043         }
1044         /*
1045          * Find the subpictures to display - this operation does not need
1046          * lock, since only READY_SUBPICTURE are handled. If no picture
1047          * has been selected, display_date will depend on the subpicture.
1048          * We get an easily parsable chained list of subpictures which
1049          * ends with NULL since p_subpic was initialized to NULL.
1050          */
1051         for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
1052         {
1053             if( p_vout->p_subpicture[i_index].i_status == READY_SUBPICTURE )
1054             {
1055                 p_vout->p_subpicture[i_index].p_next = p_subpic;
1056                 p_subpic = &p_vout->p_subpicture[i_index];
1057             }
1058         }
1059
1060         /*
1061          * Perform rendering, sleep and display rendered picture
1062          */
1063         if( p_pic )                        /* picture and perhaps subpicture */
1064         {
1065             b_display = p_vout->b_active;
1066             p_vout->last_display_date = display_date;
1067             p_vout->p_rendered_pic = p_pic;
1068
1069
1070
1071
1072             /* FIXME: if b_need_render == 0 we need to do something with
1073              * the subpictures one day. */
1074             if( p_vout->b_need_render && b_display )
1075             {
1076                 /* Set picture dimensions and clear buffer */
1077                 SetBufferPicture( p_vout, p_pic );
1078
1079                 /* Render picture and information */
1080                 RenderPicture( p_vout, p_pic );
1081                 if( p_vout->b_info )
1082                 {
1083                     RenderPictureInfo( p_vout, p_pic );
1084                     RenderInfo( p_vout );
1085                 }
1086                 if( p_subpic )
1087                 {
1088                     RenderSubPicture( p_vout, p_subpic );
1089                 }
1090             }
1091
1092             /* Render interface and subpicture */
1093             if( b_display && p_vout->b_interface && p_vout->b_need_render )
1094             {
1095                 RenderInterface( p_vout );
1096             }
1097
1098         }
1099         else if( p_vout->b_active && p_vout->b_need_render
1100                   && p_vout->init_display_date == 0)
1101         {
1102             /* Idle or interface screen alone */
1103
1104             if( p_vout->b_interface && 0 /* && XXX?? intf_change */ )
1105             {
1106                 /* Interface has changed, so a new rendering is required - force
1107                  * it by setting last idle date to 0 */
1108                 p_vout->last_idle_date = 0;
1109             }
1110
1111             /* Render idle screen and update idle date, then render interface if
1112              * required */
1113             b_display = RenderIdle( p_vout );
1114             if( b_display )
1115             {
1116                 p_vout->last_idle_date = current_date;
1117                 if( p_vout->b_interface )
1118                 {
1119                     RenderInterface( p_vout );
1120                 }
1121             }
1122
1123         }
1124         else
1125         {
1126             b_display = 0;
1127         }
1128
1129
1130         /*
1131          * Check for the current time and
1132          * display splash screen if everything is on time
1133          */
1134         if( p_vout->init_display_date > 0 && p_vout->b_need_render )
1135         {
1136             if( p_vout->b_active &&
1137                     mdate()-p_vout->init_display_date < 5000000)
1138             {
1139                 /* there is something to display ! */
1140                     b_display = 1;
1141                     RenderSplash( p_vout );
1142
1143             } else {
1144                 /* no splash screen ! */
1145                 intf_ErrMsgImm("End of splash screen\n");
1146                 p_vout->init_display_date=0;
1147             }
1148         }
1149
1150
1151         /*
1152          * Sleep, wake up and display rendered picture
1153          */
1154
1155         if( display_date != 0 )
1156         {
1157             /* Store render time using Bresenham algorithm */
1158             p_vout->render_time += mdate() - current_date;
1159             p_vout->render_time >>= 1;
1160         }
1161
1162         /* Give back change lock */
1163         vlc_mutex_unlock( &p_vout->change_lock );
1164
1165         /* Sleep a while or until a given date */
1166         if( display_date != 0 )
1167         {
1168             mwait( display_date - VOUT_MWAIT_TOLERANCE );
1169         }
1170         else
1171         {
1172             msleep( VOUT_IDLE_SLEEP );
1173         }
1174
1175         /* On awakening, take back lock and send immediately picture to display,
1176          * then swap buffers */
1177         vlc_mutex_lock( &p_vout->change_lock );
1178 #ifdef DEBUG_VOUT
1179         intf_DbgMsg( "picture %p, subpicture %p in buffer %d, display=%d\n", p_pic, p_subpic,
1180                      p_vout->i_buffer_index, b_display /* && !(p_vout->i_changes & VOUT_NODISPLAY_CHANGE) */ );
1181 #endif
1182         if( b_display /* && !(p_vout->i_changes & VOUT_NODISPLAY_CHANGE) */ )
1183         {
1184             p_vout->p_sys_display( p_vout );
1185 #ifndef SYS_BEOS
1186             p_vout->i_buffer_index = ++p_vout->i_buffer_index & 1;
1187 #endif
1188         }
1189
1190         if( p_pic )
1191         {
1192             /* Remove picture from heap */
1193             vlc_mutex_lock( &p_vout->picture_lock );
1194             if( p_pic->i_refcount )
1195             {
1196                 p_pic->i_status = DISPLAYED_PICTURE;
1197             }
1198             else
1199             {
1200                 p_pic->i_status = DESTROYED_PICTURE;
1201                 p_vout->i_pictures--;
1202             }
1203             vlc_mutex_unlock( &p_vout->picture_lock );
1204         }
1205
1206
1207         /*
1208          * Check events and manage thread
1209          */
1210         if( p_vout->p_sys_manage( p_vout ) | Manage( p_vout ) )
1211         {
1212             /* A fatal error occured, and the thread must terminate immediately,
1213              * without displaying anything - setting b_error to 1 cause the
1214              * immediate end of the main while() loop. */
1215             p_vout->b_error = 1;
1216         }
1217     }
1218
1219     /*
1220      * Error loop - wait until the thread destruction is requested
1221      */
1222     if( p_vout->b_error )
1223     {
1224         ErrorThread( p_vout );
1225     }
1226
1227     /* End of thread */
1228     EndThread( p_vout );
1229     DestroyThread( p_vout, THREAD_OVER );
1230     intf_DbgMsg( "thread end\n" );
1231 }
1232
1233 /*****************************************************************************
1234  * ErrorThread: RunThread() error loop
1235  *****************************************************************************
1236  * This function is called when an error occured during thread main's loop. The
1237  * thread can still receive feed, but must be ready to terminate as soon as
1238  * possible.
1239  *****************************************************************************/
1240 static void ErrorThread( vout_thread_t *p_vout )
1241 {
1242     /* Wait until a `die' order */
1243     intf_DbgMsg("\n");
1244     while( !p_vout->b_die )
1245     {
1246         /* Sleep a while */
1247         msleep( VOUT_IDLE_SLEEP );
1248     }
1249 }
1250
1251 /*****************************************************************************
1252  * EndThread: thread destruction
1253  *****************************************************************************
1254  * This function is called when the thread ends after a sucessful
1255  * initialization. It frees all ressources allocated by InitThread.
1256  *****************************************************************************/
1257 static void EndThread( vout_thread_t *p_vout )
1258 {
1259     int     i_index;                                        /* index in heap */
1260
1261     /* Store status */
1262     intf_DbgMsg("\n");
1263     *p_vout->pi_status = THREAD_END;
1264
1265 #ifdef STATS
1266     {
1267         struct tms cpu_usage;
1268         times( &cpu_usage );
1269
1270         intf_Msg("vout stats: cpu usage (user: %d, system: %d)\n",
1271                  cpu_usage.tms_utime, cpu_usage.tms_stime);
1272     }
1273 #endif
1274
1275     /* Destroy all remaining pictures and subpictures */
1276     for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++ )
1277     {
1278         if( p_vout->p_picture[i_index].i_status != FREE_PICTURE )
1279         {
1280             free( p_vout->p_picture[i_index].p_data );
1281         }
1282     }
1283     for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
1284     {
1285         if( p_vout->p_subpicture[i_index].i_status != FREE_SUBPICTURE )
1286         {
1287             free( p_vout->p_subpicture[i_index].p_data );
1288         }
1289     }
1290
1291     /* Destroy translation tables */
1292     vout_EndYUV( p_vout );
1293     p_vout->p_sys_end( p_vout );
1294 }
1295
1296 /*****************************************************************************
1297  * DestroyThread: thread destruction
1298  *****************************************************************************
1299  * This function is called when the thread ends. It frees all ressources
1300  * allocated by CreateThread. Status is available at this stage.
1301  *****************************************************************************/
1302 static void DestroyThread( vout_thread_t *p_vout, int i_status )
1303 {
1304     int *pi_status;                                         /* status adress */
1305
1306     /* Store status adress */
1307     intf_DbgMsg("\n");
1308     pi_status = p_vout->pi_status;
1309
1310     /* Destroy thread structures allocated by Create and InitThread */
1311     vout_UnloadFont( p_vout->p_default_font );
1312     vout_UnloadFont( p_vout->p_large_font );
1313     p_vout->p_sys_destroy( p_vout );
1314
1315     /* Free structure */
1316     free( p_vout );
1317     *pi_status = i_status;
1318 }
1319
1320 /*****************************************************************************
1321  * Print: print simple text on a picture
1322  *****************************************************************************
1323  * This function will print a simple text on the picture. It is designed to
1324  * print debugging or general information.
1325  *****************************************************************************/
1326 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 )
1327 {
1328     int                 i_text_height;                  /* total text height */
1329     int                 i_text_width;                    /* total text width */
1330
1331     /* Update upper left coordinates according to alignment */
1332     vout_TextSize( p_vout->p_default_font, 0, psz_text, &i_text_width, &i_text_height );
1333     if( !Align( p_vout, &i_x, &i_y, i_text_width, i_text_height, i_h_align, i_v_align ) )
1334     {
1335         /* Set area and print text */
1336         SetBufferArea( p_vout, i_x, i_y, i_text_width, i_text_height );
1337         vout_Print( p_vout->p_default_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1338                     i_y * p_vout->i_bytes_per_line + i_x * p_vout->i_bytes_per_pixel,
1339                     p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1340                     p_vout->i_white_pixel, 0, 0,
1341                     0, psz_text, 100 );
1342     }
1343 }
1344
1345 /*****************************************************************************
1346  * SetBufferArea: activate an area in current buffer
1347  *****************************************************************************
1348  * This function is called when something is rendered on the current buffer.
1349  * It set the area as active and prepare it to be cleared on next rendering.
1350  * Pay attention to the fact that in this functions, i_h is in fact the end y
1351  * coordinate of the new area.
1352  *****************************************************************************/
1353 static void SetBufferArea( vout_thread_t *p_vout, int i_x, int i_y, int i_w, int i_h )
1354 {
1355     vout_buffer_t *     p_buffer;                          /* current buffer */
1356     int                 i_area_begin, i_area_end; /* area vertical extension */
1357     int                 i_area, i_area_copy;                   /* area index */
1358     int                 i_area_shift;            /* shift distance for areas */
1359
1360     /* Choose buffer and modify h to end of area position */
1361     p_buffer =  &p_vout->p_buffer[ p_vout->i_buffer_index ];
1362     i_h +=      i_y - 1;
1363
1364     /*
1365      * Remove part of the area which is inside the picture - this is done
1366      * by calling again SetBufferArea with the correct areas dimensions.
1367      */
1368     if( (i_x >= p_buffer->i_pic_x) && (i_x + i_w <= p_buffer->i_pic_x + p_buffer->i_pic_width) )
1369     {
1370         i_area_begin =  p_buffer->i_pic_y;
1371         i_area_end =    i_area_begin + p_buffer->i_pic_height - 1;
1372
1373         if( ((i_y >= i_area_begin) && (i_y <= i_area_end)) ||
1374             ((i_h >= i_area_begin) && (i_h <= i_area_end)) ||
1375             ((i_y <  i_area_begin) && (i_h > i_area_end)) )
1376         {
1377             /* Keep the stripe above the picture, if any */
1378             if( i_y < i_area_begin )
1379             {
1380                 SetBufferArea( p_vout, i_x, i_y, i_w, i_area_begin - i_y );
1381             }
1382             /* Keep the stripe below the picture, if any */
1383             if( i_h > i_area_end )
1384             {
1385                 SetBufferArea( p_vout, i_x, i_area_end, i_w, i_h - i_area_end );
1386             }
1387             return;
1388         }
1389     }
1390
1391     /* Skip some extensions until interesting areas */
1392     for( i_area = 0;
1393          (i_area < p_buffer->i_areas) &&
1394              (p_buffer->pi_area_end[i_area] + 1 <= i_y);
1395          i_area++ )
1396     {
1397         ;
1398     }
1399
1400     if( i_area == p_buffer->i_areas )
1401     {
1402         /* New area is below all existing ones: just add it at the end of the
1403          * array, if possible - otherwise, append it to the last one */
1404         if( i_area < VOUT_MAX_AREAS )
1405         {
1406             p_buffer->pi_area_begin[i_area] = i_y;
1407             p_buffer->pi_area_end[i_area] = i_h;
1408             p_buffer->i_areas++;
1409         }
1410         else
1411         {
1412 #ifdef DEBUG_VOUT
1413             intf_DbgMsg("area overflow\n");
1414 #endif
1415             p_buffer->pi_area_end[VOUT_MAX_AREAS - 1] = i_h;
1416         }
1417     }
1418     else
1419     {
1420         i_area_begin =  p_buffer->pi_area_begin[i_area];
1421         i_area_end =    p_buffer->pi_area_end[i_area];
1422
1423         if( i_y < i_area_begin )
1424         {
1425             if( i_h >= i_area_begin - 1 )
1426             {
1427                 /* Extend area above */
1428                 p_buffer->pi_area_begin[i_area] = i_y;
1429             }
1430             else
1431             {
1432                 /* Create a new area above : merge last area if overflow, then
1433                  * move all old areas down */
1434                 if( p_buffer->i_areas == VOUT_MAX_AREAS )
1435                 {
1436 #ifdef DEBUG_VOUT
1437                     intf_DbgMsg("areas overflow\n");
1438 #endif
1439                     p_buffer->pi_area_end[VOUT_MAX_AREAS - 2] = p_buffer->pi_area_end[VOUT_MAX_AREAS - 1];
1440                 }
1441                 else
1442                 {
1443                     p_buffer->i_areas++;
1444                 }
1445                 for( i_area_copy = p_buffer->i_areas - 1; i_area_copy > i_area; i_area_copy-- )
1446                 {
1447                     p_buffer->pi_area_begin[i_area_copy] = p_buffer->pi_area_begin[i_area_copy - 1];
1448                     p_buffer->pi_area_end[i_area_copy] =   p_buffer->pi_area_end[i_area_copy - 1];
1449                 }
1450                 p_buffer->pi_area_begin[i_area] = i_y;
1451                 p_buffer->pi_area_end[i_area] = i_h;
1452                 return;
1453             }
1454         }
1455         if( i_h > i_area_end )
1456         {
1457             /* Find further areas which can be merged with the new one */
1458             for( i_area_copy = i_area + 1;
1459                  (i_area_copy < p_buffer->i_areas) &&
1460                      (p_buffer->pi_area_begin[i_area] <= i_h);
1461                  i_area_copy++ )
1462             {
1463                 ;
1464             }
1465             i_area_copy--;
1466
1467             if( i_area_copy != i_area )
1468             {
1469                 /* Merge with last possible areas */
1470                 p_buffer->pi_area_end[i_area] = MAX( i_h, p_buffer->pi_area_end[i_area_copy] );
1471
1472                 /* Shift lower areas upward */
1473                 i_area_shift = i_area_copy - i_area;
1474                 p_buffer->i_areas -= i_area_shift;
1475                 for( i_area_copy = i_area + 1; i_area_copy < p_buffer->i_areas; i_area_copy++ )
1476                 {
1477                     p_buffer->pi_area_begin[i_area_copy] = p_buffer->pi_area_begin[i_area_copy + i_area_shift];
1478                     p_buffer->pi_area_end[i_area_copy] =   p_buffer->pi_area_end[i_area_copy + i_area_shift];
1479                 }
1480             }
1481             else
1482             {
1483                 /* Extend area below */
1484                 p_buffer->pi_area_end[i_area] = i_h;
1485             }
1486         }
1487     }
1488 }
1489
1490 /*****************************************************************************
1491  * SetBufferPicture: clear buffer and set picture area
1492  *****************************************************************************
1493  * This function is called before any rendering. It clears the current
1494  * rendering buffer and set the new picture area. If the picture pointer is
1495  * NULL, then no picture area is defined. Floating operations are avoided since
1496  * some MMX calculations may follow.
1497  *****************************************************************************/
1498 static void SetBufferPicture( vout_thread_t *p_vout, picture_t *p_pic )
1499 {
1500     vout_buffer_t *     p_buffer;                          /* current buffer */
1501     int                 i_pic_x, i_pic_y;                /* picture position */
1502     int                 i_pic_width, i_pic_height;     /* picture dimensions */
1503     int                 i_old_pic_y, i_old_pic_height;   /* old picture area */
1504     int                 i_vout_width, i_vout_height;   /* display dimensions */
1505     int                 i_area;                                /* area index */
1506     int                 i_data_index;                     /* area data index */
1507     int                 i_data_size;   /* area data size, in 256 bytes blocs */
1508     u64 *               p_data;                   /* area data, for clearing */
1509     byte_t *            p_data8;           /* area data, for clearing (slow) */
1510
1511     /* Choose buffer and set display dimensions */
1512     p_buffer =          &p_vout->p_buffer[ p_vout->i_buffer_index ];
1513     i_vout_width =      p_vout->i_width;
1514     i_vout_height =     p_vout->i_height;
1515
1516     /*
1517      * Computes new picture size
1518      */
1519     if( p_pic != NULL )
1520     {
1521         /* Try horizontal scaling first - width must be a mutiple of 16 */
1522         i_pic_width = (( p_vout->b_scale || (p_pic->i_width > i_vout_width)) ?
1523                        i_vout_width : p_pic->i_width) & ~0xf;
1524         switch( p_pic->i_aspect_ratio )
1525         {
1526         case AR_3_4_PICTURE:
1527             i_pic_height = i_pic_width * 3 / 4;
1528             break;
1529         case AR_16_9_PICTURE:
1530             i_pic_height = i_pic_width * 9 / 16;
1531             break;
1532         case AR_221_1_PICTURE:
1533             i_pic_height = i_pic_width * 100 / 221;
1534             break;
1535         case AR_SQUARE_PICTURE:
1536         default:
1537             i_pic_height = p_pic->i_height * i_pic_width / p_pic->i_width;
1538             break;
1539         }
1540
1541         /* If picture dimensions using horizontal scaling are too large, use
1542          * vertical scaling. Since width must be a multiple of 16, height is
1543          * adjusted again after. */
1544         if( i_pic_height > i_vout_height )
1545         {
1546             i_pic_height = ( p_vout->b_scale || (p_pic->i_height > i_vout_height)) ?
1547                 i_vout_height : p_pic->i_height;
1548             switch( p_pic->i_aspect_ratio )
1549             {
1550             case AR_3_4_PICTURE:
1551                 i_pic_width = (i_pic_height * 4 / 3) & ~0xf;
1552                 i_pic_height = i_pic_width * 3 / 4;
1553                 break;
1554             case AR_16_9_PICTURE:
1555                 i_pic_width = (i_pic_height * 16 / 9) & ~0xf;
1556                 i_pic_height = i_pic_width * 9 / 16;
1557                 break;
1558             case AR_221_1_PICTURE:
1559                 i_pic_width = (i_pic_height * 221 / 100) & ~0xf;
1560                 i_pic_height = i_pic_width * 100 / 221;
1561                 break;
1562             case AR_SQUARE_PICTURE:
1563             default:
1564                 i_pic_width = (p_pic->i_width * i_pic_height / p_pic->i_height) & ~0xf;
1565                 i_pic_height = p_pic->i_height * i_pic_width / p_pic->i_width;
1566                 break;
1567             }
1568         }
1569
1570         /* Set picture position */
1571         i_pic_x = (p_vout->i_width - i_pic_width) / 2;
1572         i_pic_y = (p_vout->i_height - i_pic_height) / 2;
1573
1574     }
1575     else
1576     {
1577         /* No picture: size is 0 */
1578         i_pic_x =       0;
1579         i_pic_y =       0;
1580         i_pic_width =   0;
1581         i_pic_height =  0;
1582     }
1583
1584     /*
1585      * Set new picture size - if it is smaller than the previous one, clear
1586      * around it. Since picture are centered, only their size is tested.
1587      */
1588     if( (p_buffer->i_pic_width > i_pic_width) || (p_buffer->i_pic_height > i_pic_height) )
1589     {
1590         i_old_pic_y =            p_buffer->i_pic_y;
1591         i_old_pic_height =       p_buffer->i_pic_height;
1592         p_buffer->i_pic_x =      i_pic_x;
1593         p_buffer->i_pic_y =      i_pic_y;
1594         p_buffer->i_pic_width =  i_pic_width;
1595         p_buffer->i_pic_height = i_pic_height;
1596         SetBufferArea( p_vout, 0, i_old_pic_y, p_vout->i_width, i_old_pic_height );
1597     }
1598     else
1599     {
1600         p_buffer->i_pic_x =      i_pic_x;
1601         p_buffer->i_pic_y =      i_pic_y;
1602         p_buffer->i_pic_width =  i_pic_width;
1603         p_buffer->i_pic_height = i_pic_height;
1604     }
1605
1606     /*
1607      * Clear areas
1608      */
1609     for( i_area = 0; i_area < p_buffer->i_areas; i_area++ )
1610     {
1611 #ifdef DEBUG_VOUT
1612         intf_DbgMsg("clearing picture %p area in buffer %d: %d-%d\n", p_pic,
1613                     p_vout->i_buffer_index, p_buffer->pi_area_begin[i_area], p_buffer->pi_area_end[i_area] );
1614 #endif
1615         i_data_size = (p_buffer->pi_area_end[i_area] - p_buffer->pi_area_begin[i_area] + 1) * p_vout->i_bytes_per_line;
1616         p_data = (u64*) (p_buffer->p_data + p_vout->i_bytes_per_line * p_buffer->pi_area_begin[i_area]);
1617         for( i_data_index = i_data_size / 256; i_data_index-- ; )
1618         {
1619             /* Clear 256 bytes block */
1620             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1621             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1622             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1623             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1624             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1625             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1626             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1627             *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;  *p_data++ = 0;
1628         }
1629         for( i_data_index = (i_data_size % 256) / 16; i_data_index--; )
1630         {
1631             /* Clear remaining 16 bytes blocks */
1632             *p_data++ = 0;  *p_data++ = 0;
1633         }
1634         p_data8 = (byte_t *)p_data;
1635         for( i_data_index = i_data_size % 16; i_data_index--; )
1636         {
1637             /* Clear remaining bytes */
1638             *p_data8++ = 0;
1639         }
1640     }
1641
1642     /*
1643      * Clear areas array
1644      */
1645     p_buffer->i_areas = 0;
1646 }
1647
1648 /*****************************************************************************
1649  * RenderPicture: render a picture
1650  *****************************************************************************
1651  * This function converts a picture from a video heap to a pixel-encoded image
1652  * and copies it to the current rendering buffer. No lock is required, since
1653  * the * rendered picture has been determined as existant, and will only be
1654  * destroyed by the vout thread later.
1655  *****************************************************************************/
1656 static void RenderPicture( vout_thread_t *p_vout, picture_t *p_pic )
1657 {
1658 #ifdef DEBUG_VOUT
1659     char                psz_date[MSTRTIME_MAX_SIZE];         /* picture date */
1660     mtime_t             render_time;               /* picture rendering time */
1661 #endif
1662     vout_buffer_t *     p_buffer;                        /* rendering buffer */
1663     byte_t *            p_pic_data;                /* convertion destination */
1664
1665     /* Get and set rendering information */
1666     p_buffer =          &p_vout->p_buffer[ p_vout->i_buffer_index ];
1667     p_pic_data =        p_buffer->p_data +
1668                         p_buffer->i_pic_x * p_vout->i_bytes_per_pixel +
1669                         p_buffer->i_pic_y * p_vout->i_bytes_per_line;
1670 #ifdef DEBUG_VOUT
1671     render_time = mdate();
1672 #endif
1673
1674
1675
1676     /*
1677      * Choose appropriate rendering function and render picture
1678      */
1679     switch( p_pic->i_type )
1680     {
1681     case YUV_420_PICTURE:
1682         p_vout->yuv.p_Convert420( p_vout, p_pic_data,
1683                                   p_pic->p_y, p_pic->p_u, p_pic->p_v,
1684                                   p_pic->i_width, p_pic->i_height,
1685                                   p_buffer->i_pic_width, p_buffer->i_pic_height,
1686                                   p_vout->i_bytes_per_line / p_vout->i_bytes_per_pixel,
1687                                   p_pic->i_matrix_coefficients );
1688         break;
1689     case YUV_422_PICTURE:
1690         p_vout->yuv.p_Convert422( p_vout, p_pic_data,
1691                                   p_pic->p_y, p_pic->p_u, p_pic->p_v,
1692                                   p_pic->i_width, p_pic->i_height,
1693                                   p_buffer->i_pic_width, p_buffer->i_pic_height,
1694                                   p_vout->i_bytes_per_line / p_vout->i_bytes_per_pixel,
1695                                   p_pic->i_matrix_coefficients );
1696         break;
1697     case YUV_444_PICTURE:
1698         p_vout->yuv.p_Convert444( p_vout, p_pic_data,
1699                                   p_pic->p_y, p_pic->p_u, p_pic->p_v,
1700                                   p_pic->i_width, p_pic->i_height,
1701                                   p_buffer->i_pic_width, p_buffer->i_pic_height,
1702                                   p_vout->i_bytes_per_line / p_vout->i_bytes_per_pixel,
1703                                   p_pic->i_matrix_coefficients );
1704         break;
1705 #ifdef DEBUG
1706     default:
1707         intf_DbgMsg("error: unknown picture type %d\n", p_pic->i_type );
1708         break;
1709 #endif
1710     }
1711
1712 #ifdef DEBUG_VOUT
1713     /* Print picture date and rendering time */
1714     intf_DbgMsg("picture %p rendered in buffer %d (%ld us), display date: %s\n", p_pic,
1715                 p_vout->i_buffer_index, (long) (mdate() - render_time),
1716                 mstrtime( psz_date, p_pic->date ));
1717 #endif
1718 }
1719
1720 /*****************************************************************************
1721  * RenderPictureInfo: print additionnal information on a picture
1722  *****************************************************************************
1723  * This function will print information such as fps and other picture
1724  * dependant information.
1725  *****************************************************************************/
1726 static void RenderPictureInfo( vout_thread_t *p_vout, picture_t *p_pic )
1727 {
1728     char        psz_buffer[256];                            /* string buffer */
1729
1730     /*
1731      * Print FPS rate in upper right corner
1732      */
1733     if( p_vout->c_fps_samples > VOUT_FPS_SAMPLES )
1734     {
1735         long i_fps = VOUT_FPS_SAMPLES * 1000000 * 10 /
1736                            ( p_vout->p_fps_sample[ (p_vout->c_fps_samples - 1)
1737                                                    % VOUT_FPS_SAMPLES ] -
1738                              p_vout->p_fps_sample[ p_vout->c_fps_samples
1739                                                    % VOUT_FPS_SAMPLES ] );
1740         sprintf( psz_buffer, "%li.%i fps", i_fps / 10, (int)i_fps % 10 );
1741         Print( p_vout, 0, 0, RIGHT_RALIGN, TOP_RALIGN, psz_buffer );
1742     }
1743
1744     /*
1745      * Print frames count and loop time in upper left corner
1746      */
1747     sprintf( psz_buffer, "%ld frames, render: %ldus",
1748              (long) p_vout->c_fps_samples, (long) p_vout->render_time );
1749     Print( p_vout, 0, 0, LEFT_RALIGN, TOP_RALIGN, psz_buffer );
1750
1751 #ifdef STATS
1752     /*
1753      * Print picture information in lower right corner
1754      */
1755     sprintf( psz_buffer, "%s picture %dx%d (%dx%d%+d%+d %s) -> %dx%d+%d+%d",
1756              (p_pic->i_type == YUV_420_PICTURE) ? "4:2:0" :
1757              ((p_pic->i_type == YUV_422_PICTURE) ? "4:2:2" :
1758               ((p_pic->i_type == YUV_444_PICTURE) ? "4:4:4" : "ukn-type")),
1759              p_pic->i_width, p_pic->i_height,
1760              p_pic->i_display_width, p_pic->i_display_height,
1761              p_pic->i_display_horizontal_offset, p_pic->i_display_vertical_offset,
1762              (p_pic->i_aspect_ratio == AR_SQUARE_PICTURE) ? "sq" :
1763              ((p_pic->i_aspect_ratio == AR_3_4_PICTURE) ? "4:3" :
1764               ((p_pic->i_aspect_ratio == AR_16_9_PICTURE) ? "16:9" :
1765                ((p_pic->i_aspect_ratio == AR_221_1_PICTURE) ? "2.21:1" : "ukn-ar" ))),
1766              p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_width,
1767              p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_height,
1768              p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_x,
1769              p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_y );
1770     Print( p_vout, 0, 0, RIGHT_RALIGN, BOTTOM_RALIGN, psz_buffer );
1771 #endif
1772 }
1773
1774 /*****************************************************************************
1775  * RenderSplash: render splash picture
1776  *****************************************************************************
1777  * This function will print something on the screen. It will return 0 if
1778  * nothing has been rendered, or 1 if something has been changed on the screen.
1779  * Note that if you absolutely want something to be printed, you will have
1780  * to force it by setting the last idle date to 0.
1781  * Unlike other rendering functions, this one calls the SetBufferPicture
1782  * function when needed.
1783  *****************************************************************************/
1784 int RenderSplash( vout_thread_t *p_vout )
1785 {
1786     int         i_x = 0, i_y = 0;                           /* text position */
1787     int         i_width, i_height;                              /* text size */
1788     char *psz_text =    "VideoLAN Client (" VERSION ")";  /* text to display */
1789
1790     memset( p_vout->p_buffer[ p_vout->i_buffer_index ].p_data,
1791                   p_vout->i_bytes_per_line * p_vout->i_height, 12);
1792
1793  //   SetBufferPicture( p_vout, NULL );
1794     vout_TextSize( p_vout->p_large_font, WIDE_TEXT | OUTLINED_TEXT, psz_text,
1795                    &i_width, &i_height );
1796     if( !Align( p_vout, &i_x, &i_y, i_width, i_height, CENTER_RALIGN, CENTER_RALIGN ) )
1797     {
1798         vout_Print( p_vout->p_large_font,
1799                     p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1800                     i_x * p_vout->i_bytes_per_pixel + (i_y - 16 ) * p_vout->i_bytes_per_line,
1801                     p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1802                     p_vout->i_white_pixel, p_vout->i_gray_pixel, 0,
1803                     WIDE_TEXT | OUTLINED_TEXT, psz_text, 100);
1804         SetBufferArea( p_vout, i_x, i_y, i_width, i_height);
1805     }
1806     return( 1 );
1807 }
1808
1809
1810 /*****************************************************************************
1811  * RenderIdle: render idle picture
1812  *****************************************************************************
1813  * This function will print something on the screen. It will return 0 if
1814  * nothing has been rendered, or 1 if something has been changed on the screen.
1815  * Note that if you absolutely want something to be printed, you will have
1816  * to force it by setting the last idle date to 0.
1817  * Unlike other rendering functions, this one calls the SetBufferPicture
1818  * function when needed.
1819  *****************************************************************************/
1820 int RenderIdle( vout_thread_t *p_vout )
1821 {
1822     int         i_x = 0, i_y = 0;                           /* text position */
1823     int         i_width, i_height;                              /* text size */
1824     mtime_t     current_date;                                /* current date */
1825     int         i_amount = 0;                             /*  amount to draw */
1826     char *psz_text =    "Waiting for stream";            /* text to display */
1827     char *psz_wtext =   "[................]";
1828
1829
1830     memset( p_vout->p_buffer[ p_vout->i_buffer_index ].p_data,
1831                     p_vout->i_bytes_per_line * p_vout->i_height, 12);
1832
1833
1834     current_date = mdate();
1835     if( (current_date - p_vout->last_display_date) > VOUT_IDLE_DELAY
1836 //            && (current_date - p_vout->last_idle_date) > VOUT_IDLE_DELAY
1837     )
1838     {
1839         SetBufferPicture( p_vout, NULL );
1840         vout_TextSize( p_vout->p_large_font, WIDE_TEXT | OUTLINED_TEXT, psz_text,
1841                        &i_width, &i_height );
1842         if( !Align( p_vout, &i_x, &i_y, i_width, i_height * 2, CENTER_RALIGN, CENTER_RALIGN ) )
1843         {
1844             i_amount = (int) ((current_date - p_vout->last_display_date ) / 5000LL);
1845             vout_Print( p_vout->p_large_font,
1846                         p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1847                         i_x * p_vout->i_bytes_per_pixel + i_y * p_vout->i_bytes_per_line,
1848                         p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1849                         p_vout->i_white_pixel, p_vout->i_gray_pixel, 0,
1850                         WIDE_TEXT | OUTLINED_TEXT, psz_text,  (i_amount / 3 ) %110);
1851
1852             vout_Print( p_vout->p_large_font,
1853                     p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1854                     i_x * p_vout->i_bytes_per_pixel + (i_y + 16) * p_vout->i_bytes_per_line,
1855                     p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1856                     p_vout->i_white_pixel, p_vout->i_gray_pixel, 0,
1857                     WIDE_TEXT | OUTLINED_TEXT, psz_wtext,  (i_amount/5)%110 );
1858
1859
1860             SetBufferArea( p_vout, i_x, i_y, i_width, i_height * 2 );
1861         }
1862         return( 1 );
1863     }
1864     return( 0 );
1865 }
1866
1867 /*****************************************************************************
1868  * RenderInfo: render additionnal information
1869  *****************************************************************************
1870  * This function renders information which do not depend on the current
1871  * picture rendered.
1872  *****************************************************************************/
1873 static void RenderInfo( vout_thread_t *p_vout )
1874 {
1875 #ifdef DEBUG
1876     char        psz_buffer[256];                            /* string buffer */
1877     int         i_ready_pic = 0;                           /* ready pictures */
1878     int         i_reserved_pic = 0;                     /* reserved pictures */
1879     int         i_picture;                                  /* picture index */
1880 #endif
1881
1882 #ifdef DEBUG
1883     /*
1884      * Print thread state in lower left corner
1885      */
1886     for( i_picture = 0; i_picture < VOUT_MAX_PICTURES; i_picture++ )
1887     {
1888         switch( p_vout->p_picture[i_picture].i_status )
1889         {
1890         case RESERVED_PICTURE:
1891         case RESERVED_DATED_PICTURE:
1892         case RESERVED_DISP_PICTURE:
1893             i_reserved_pic++;
1894             break;
1895         case READY_PICTURE:
1896             i_ready_pic++;
1897             break;
1898         }
1899     }
1900     sprintf( psz_buffer, "pic: %d (%d/%d)/%d",
1901              p_vout->i_pictures, i_reserved_pic, i_ready_pic, VOUT_MAX_PICTURES );
1902     Print( p_vout, 0, 0, LEFT_RALIGN, BOTTOM_RALIGN, psz_buffer );
1903 #endif
1904 }
1905
1906 /*****************************************************************************
1907  * RenderSubPicture: render a subpicture
1908  *****************************************************************************
1909  * This function renders a sub picture unit.
1910  *****************************************************************************/
1911 static void RenderSubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
1912 {
1913     p_vout_font_t       p_font;                                 /* text font */
1914     int                 i_width, i_height;          /* subpicture dimensions */
1915
1916     while( p_subpic != NULL )
1917     {
1918         switch( p_subpic->i_type )
1919         {
1920         case DVD_SUBPICTURE:                          /* DVD subpicture unit */
1921             /* test if the picture really has to be displayed */
1922             if( mdate() < p_subpic->begin_date )
1923             {
1924                 /* not yet, see you later */
1925                 break;
1926             }
1927             if( mdate() > p_subpic->end_date )
1928             {
1929                 /* too late, destroying the subpic */
1930                 vout_DestroySubPicture( p_vout, p_subpic );
1931                 break;
1932             }
1933             vout_RenderSPU( &p_vout->p_buffer[ p_vout->i_buffer_index ],
1934                             p_subpic, p_vout->i_bytes_per_pixel,
1935                             p_vout->i_bytes_per_line );
1936             break;
1937         case TEXT_SUBPICTURE:                            /* single line text */
1938             /* Select default font if not specified */
1939             p_font = p_subpic->type.text.p_font;
1940             if( p_font == NULL )
1941             {
1942                 p_font = p_vout->p_default_font;
1943             }
1944
1945             /* Compute text size (width and height fields are ignored)
1946              * and print it */
1947             vout_TextSize( p_font, p_subpic->type.text.i_style,
1948                            p_subpic->p_data, &i_width, &i_height );
1949             if( !Align( p_vout, &p_subpic->i_x, &p_subpic->i_y,
1950                         i_width, i_height, p_subpic->i_horizontal_align,
1951                         p_subpic->i_vertical_align ) )
1952             {
1953                 vout_Print( p_font,
1954                             p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
1955                             p_subpic->i_x * p_vout->i_bytes_per_pixel +
1956                             p_subpic->i_y * p_vout->i_bytes_per_line,
1957                             p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
1958                             p_subpic->type.text.i_char_color,
1959                             p_subpic->type.text.i_border_color,
1960                             p_subpic->type.text.i_bg_color,
1961                             p_subpic->type.text.i_style, p_subpic->p_data, 100 );
1962                 SetBufferArea( p_vout, p_subpic->i_x, p_subpic->i_y,
1963                                i_width, i_height );
1964             }
1965             break;
1966
1967 #ifdef DEBUG
1968         default:
1969             intf_DbgMsg( "error: unknown subpicture %p type %d\n",
1970                          p_subpic, p_subpic->i_type );
1971 #endif
1972         }
1973
1974         p_subpic = p_subpic->p_next;
1975     }
1976 }
1977
1978 /*****************************************************************************
1979  * RenderInterface: render the interface
1980  *****************************************************************************
1981  * This function renders the interface, if any.
1982  *****************************************************************************/
1983 static void RenderInterface( vout_thread_t *p_vout )
1984 {
1985     int         i_height, i_text_height;            /* total and text height */
1986     int         i_width_1, i_width_2;                          /* text width */
1987     int         i_byte;                                        /* byte index */
1988     const char *psz_text_1 = "[1-9] Channel   [i]nfo   [c]olor     [g/G]amma";
1989     const char *psz_text_2 = "[+/-] Volume    [m]ute   [s]caling   [Q]uit";
1990
1991     /* Get text size */
1992     vout_TextSize( p_vout->p_large_font, OUTLINED_TEXT, psz_text_1, &i_width_1, &i_height );
1993     vout_TextSize( p_vout->p_large_font, OUTLINED_TEXT, psz_text_2, &i_width_2, &i_text_height );
1994     i_height += i_text_height;
1995
1996     /* Render background */
1997     for( i_byte = (p_vout->i_height - i_height) * p_vout->i_bytes_per_line;
1998          i_byte < p_vout->i_height * p_vout->i_bytes_per_line;
1999          i_byte++ )
2000     {
2001         /* XXX?? noooo ! */
2002         p_vout->p_buffer[ p_vout->i_buffer_index ].p_data[ i_byte ] = p_vout->i_blue_pixel;
2003     }
2004
2005     /* Render text, if not larger than screen */
2006     if( i_width_1 < p_vout->i_width )
2007     {
2008         vout_Print( p_vout->p_large_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
2009                     (p_vout->i_height - i_height) * p_vout->i_bytes_per_line,
2010                     p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
2011                     p_vout->i_white_pixel, p_vout->i_black_pixel, 0,
2012                     OUTLINED_TEXT, psz_text_1, 100 );
2013     }
2014     if( i_width_2 < p_vout->i_width )
2015     {
2016         vout_Print( p_vout->p_large_font, p_vout->p_buffer[ p_vout->i_buffer_index ].p_data +
2017                     (p_vout->i_height - i_height + i_text_height) * p_vout->i_bytes_per_line,
2018                     p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line,
2019                     p_vout->i_white_pixel, p_vout->i_black_pixel, 0,
2020                     OUTLINED_TEXT, psz_text_2, 100 );
2021     }
2022
2023     /* Activate modified area */
2024     SetBufferArea( p_vout, 0, p_vout->i_height - i_height, p_vout->i_width, i_height );
2025 }
2026
2027 /*****************************************************************************
2028  * Manage: manage thread
2029  *****************************************************************************
2030  * This function will handle changes in thread configuration.
2031  *****************************************************************************/
2032 static int Manage( vout_thread_t *p_vout )
2033 {
2034 #ifdef DEBUG_VOUT
2035     if( p_vout->i_changes )
2036     {
2037         intf_DbgMsg("changes: 0x%x (no display: 0x%x)\n", p_vout->i_changes,
2038                     0 /* p_vout->i_changes & VOUT_NODISPLAY_CHANGE */ );
2039     }
2040 #endif
2041
2042     /* On gamma or grayscale change, rebuild tables */
2043     if( p_vout->i_changes & (VOUT_GAMMA_CHANGE | VOUT_GRAYSCALE_CHANGE |
2044                              VOUT_YUV_CHANGE) )
2045     {
2046         if( vout_ResetYUV( p_vout ) )
2047         {
2048             intf_ErrMsg("error: can't rebuild convertion tables\n");
2049             return( 1 );
2050         }
2051     }
2052
2053     /* Clear changes flags which does not need management or have been
2054      * handled */
2055     p_vout->i_changes &= ~(VOUT_GAMMA_CHANGE | VOUT_GRAYSCALE_CHANGE |
2056                            VOUT_YUV_CHANGE   | VOUT_INFO_CHANGE |
2057                            VOUT_INTF_CHANGE  | VOUT_SCALE_CHANGE );
2058
2059     /* Detect unauthorized changes */
2060     if( p_vout->i_changes )
2061     {
2062         /* Some changes were not acknowledged by p_vout->p_sys_manage or this
2063          * function, it means they should not be authorized */
2064         intf_ErrMsg( "error: unauthorized changes in the video output thread\n" );
2065         return( 1 );
2066     }
2067
2068     return( 0 );
2069 }
2070
2071 /*****************************************************************************
2072  * Align: align a subpicture in the screen
2073  *****************************************************************************
2074  * This function is used for rendering text or subpictures. It returns non 0
2075  * it the final aera is not fully included in display area. Return coordinates
2076  * are absolute.
2077  *****************************************************************************/
2078 static int Align( vout_thread_t *p_vout, int *pi_x, int *pi_y,
2079                    int i_width, int i_height, int i_h_align, int i_v_align )
2080 {
2081     /* Align horizontally */
2082     switch( i_h_align )
2083     {
2084     case CENTER_ALIGN:
2085         *pi_x -= i_width / 2;
2086         break;
2087     case CENTER_RALIGN:
2088         *pi_x += (p_vout->i_width - i_width) / 2;
2089         break;
2090     case RIGHT_ALIGN:
2091         *pi_x -= i_width;
2092         break;
2093     case RIGHT_RALIGN:
2094         *pi_x += p_vout->i_width - i_width;
2095         break;
2096     }
2097
2098     /* Align vertically */
2099     switch( i_v_align )
2100     {
2101     case CENTER_ALIGN:
2102         *pi_y -= i_height / 2;
2103         break;
2104     case CENTER_RALIGN:
2105         *pi_y += (p_vout->i_height - i_height) / 2;
2106         break;
2107     case BOTTOM_ALIGN:
2108         *pi_y -= i_height;
2109         break;
2110     case BOTTOM_RALIGN:
2111         *pi_y += p_vout->i_height - i_height;
2112         break;
2113     case SUBTITLE_RALIGN:
2114         *pi_y += (p_vout->i_height + p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_y +
2115                   p_vout->p_buffer[ p_vout->i_buffer_index ].i_pic_height - i_height) / 2;
2116         break;
2117     }
2118
2119     /* Return non 0 if clipping failed */
2120     return( (*pi_x < 0) || (*pi_y < 0) ||
2121             (*pi_x + i_width > p_vout->i_width) || (*pi_y + i_height > p_vout->i_height) );
2122 }
2123
2124 /*****************************************************************************
2125  * SetPalette: sets an 8 bpp palette
2126  *****************************************************************************
2127  * This function is just a prototype that does nothing. Architectures that
2128  * support palette allocation should override it.
2129  *****************************************************************************/
2130 static void     SetPalette        ( p_vout_thread_t p_vout, u16 *red,
2131                                     u16 *green, u16 *blue, u16 *transp )
2132 {
2133     intf_ErrMsg( "SetPalette: method does not support palette changing\n" );
2134 }
2135