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

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