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