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

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