video_output.c 74 KB
Newer Older
1
/******************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
2
 * video_output.c : video output thread
3
 * (c)2000 VideoLAN
4
 ******************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
5 6 7
 * This module describes the programming interface for video output threads.
 * It includes functions allowing to open a new thread, send pictures to a
 * thread, and destroy a previously oppenned video output thread.
8
 ******************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
9

10
/******************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
11
 * Preamble
12
 ******************************************************************************/
13
#include <errno.h>
Michel Kaempf's avatar
Michel Kaempf committed
14 15 16
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
Vincent Seguin's avatar
Vincent Seguin committed
17

Michel Kaempf's avatar
Michel Kaempf committed
18 19 20
#include "common.h"
#include "config.h"
#include "mtime.h"
21
#include "vlc_thread.h"
Michel Kaempf's avatar
Michel Kaempf committed
22 23
#include "video.h"
#include "video_output.h"
Vincent Seguin's avatar
Vincent Seguin committed
24
#include "video_text.h"
Vincent Seguin's avatar
Vincent Seguin committed
25
#include "video_sys.h"
26
#include "video_yuv.h"
Vincent Seguin's avatar
Vincent Seguin committed
27
#include "intf_msg.h"
28
#include "main.h"
Vincent Seguin's avatar
Vincent Seguin committed
29

30
/******************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
31
 * Local prototypes
32
 ******************************************************************************/
33 34 35 36
static int      InitThread              ( vout_thread_t *p_vout );
static void     RunThread               ( vout_thread_t *p_vout );
static void     ErrorThread             ( vout_thread_t *p_vout );
static void     EndThread               ( vout_thread_t *p_vout );
37
static void     DestroyThread           ( vout_thread_t *p_vout, int i_status );
38 39
static 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 );
40 41 42 43
static void     SetBufferArea           ( vout_thread_t *p_vout, int i_x, int i_y, int i_w, int i_h );
static void     SetBufferPicture        ( vout_thread_t *p_vout, picture_t *p_pic );
static void     RenderPicture           ( vout_thread_t *p_vout, picture_t *p_pic );
static void     RenderPictureInfo       ( vout_thread_t *p_vout, picture_t *p_pic );
44
static void     RenderSubPicture        ( vout_thread_t *p_vout, subpicture_t *p_subpic );
45
static void     RenderInterface         ( vout_thread_t *p_vout );
46
static int      RenderIdle              ( vout_thread_t *p_vout );
47
static void     RenderInfo              ( vout_thread_t *p_vout );
Vincent Seguin's avatar
Vincent Seguin committed
48
static int      Manage                  ( vout_thread_t *p_vout );
49 50
static int      Align                   ( vout_thread_t *p_vout, int *pi_x, int *pi_y, 
                                          int i_width, int i_height, int i_h_align, int i_v_align );
Michel Kaempf's avatar
Michel Kaempf committed
51

52
/******************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
53
 * vout_CreateThread: creates a new video output thread
54
 ******************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
55 56 57
 * This function creates a new video output thread, and returns a pointer
 * to its description. On error, it returns NULL.
 * If pi_status is NULL, then the function will block until the thread is ready.
58
 * If not, it will be updated using one of the THREAD_* constants.
59
 ******************************************************************************/
Vincent Seguin's avatar
Vincent Seguin committed
60 61
vout_thread_t * vout_CreateThread               ( char *psz_display, int i_root_window, 
                                                  int i_width, int i_height, int *pi_status )
Michel Kaempf's avatar
Michel Kaempf committed
62
{
63 64
    vout_thread_t * p_vout;                              /* thread descriptor */
    int             i_status;                                /* thread status */
65
    int             i_index;                /* index for array initialization */    
Michel Kaempf's avatar
Michel Kaempf committed
66

67
    /* Allocate descriptor */
68
    intf_DbgMsg("\n");    
Michel Kaempf's avatar
Michel Kaempf committed
69
    p_vout = (vout_thread_t *) malloc( sizeof(vout_thread_t) );
70
    if( p_vout == NULL )
Michel Kaempf's avatar
Michel Kaempf committed
71
    {
72
        intf_ErrMsg("error: %s\n", strerror(ENOMEM));        
Michel Kaempf's avatar
Michel Kaempf committed
73 74
        return( NULL );
    }
75

76 77
    /* Initialize thread properties - thread id and locks will be initialized 
     * later */
78 79 80 81 82 83
    p_vout->b_die               = 0;
    p_vout->b_error             = 0;    
    p_vout->b_active            = 0;
    p_vout->pi_status           = (pi_status != NULL) ? pi_status : &i_status;
    *p_vout->pi_status          = THREAD_CREATE;    

84
    /* Initialize some fields used by the system-dependant method - these fields will
85
     * probably be modified by the method, and are only preferences */
86
    p_vout->i_changes           = 0;
87 88
    p_vout->i_width             = i_width;
    p_vout->i_height            = i_height;
89
    p_vout->i_bytes_per_line    = i_width * 2;    
90 91
    p_vout->i_screen_depth      = 15;
    p_vout->i_bytes_per_pixel   = 2;
92
    p_vout->f_gamma             = VOUT_GAMMA;    
93 94 95

    p_vout->b_grayscale         = main_GetIntVariable( VOUT_GRAYSCALE_VAR, 
                                                       VOUT_GRAYSCALE_DEFAULT );
Vincent Seguin's avatar
Vincent Seguin committed
96
    p_vout->b_info              = 0;    
97 98 99
    p_vout->b_interface         = 0;
    p_vout->b_scale             = 0;
    
Vincent Seguin's avatar
Vincent Seguin committed
100
    intf_DbgMsg("wished configuration: %dx%d,%d (%d bytes/pixel, %d bytes/line)\n",
101
                p_vout->i_width, p_vout->i_height, p_vout->i_screen_depth,
Vincent Seguin's avatar
Vincent Seguin committed
102
                p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line );
103

104 105 106 107
    /* Initialize idle screen */
    p_vout->last_display_date   = mdate();
    p_vout->last_idle_date      = 0;

108 109 110 111 112 113 114 115 116
#ifdef STATS
    /* Initialize statistics fields */
    p_vout->render_time         = 0;    
    p_vout->c_fps_samples       = 0;    
#endif      

    /* Initialize buffer index */
    p_vout->i_buffer_index      = 0;

117
    /* Initialize pictures and subpictures - translation tables and functions
118 119 120
     * will be initialized later in InitThread */    
    for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++)
    {
121 122 123 124
        p_vout->p_picture[i_index].i_type   =   EMPTY_PICTURE;
        p_vout->p_picture[i_index].i_status =   FREE_PICTURE;
        p_vout->p_subpicture[i_index].i_type  = EMPTY_SUBPICTURE;
        p_vout->p_subpicture[i_index].i_status= FREE_SUBPICTURE;
125
    }
126 127 128
   
    /* Create and initialize system-dependant method - this function issues its
     * own error messages */
Vincent Seguin's avatar
Vincent Seguin committed
129
    if( vout_SysCreate( p_vout, psz_display, i_root_window ) )
Michel Kaempf's avatar
Michel Kaempf committed
130
    {
Vincent Seguin's avatar
Vincent Seguin committed
131 132
      free( p_vout );
      return( NULL );
Michel Kaempf's avatar
Michel Kaempf committed
133
    }
Vincent Seguin's avatar
Vincent Seguin committed
134
    intf_DbgMsg("actual configuration: %dx%d,%d (%d bytes/pixel, %d bytes/line)\n",
135
                p_vout->i_width, p_vout->i_height, p_vout->i_screen_depth,
Vincent Seguin's avatar
Vincent Seguin committed
136
                p_vout->i_bytes_per_pixel, p_vout->i_bytes_per_line );
Vincent Seguin's avatar
Vincent Seguin committed
137

138 139
    /* Load fonts - fonts must be initialized after the systme method since
     * they may be dependant of screen depth and other thread properties */
Vincent Seguin's avatar
Vincent Seguin committed
140 141 142 143 144 145 146 147 148 149 150 151 152 153
    p_vout->p_default_font      = vout_LoadFont( VOUT_DEFAULT_FONT );    
    if( p_vout->p_default_font == NULL )
    {
        vout_SysDestroy( p_vout );        
        free( p_vout );        
        return( NULL );        
    }    
    p_vout->p_large_font        = vout_LoadFont( VOUT_LARGE_FONT );        
    if( p_vout->p_large_font == NULL )
    {
        vout_UnloadFont( p_vout->p_default_font );        
        vout_SysDestroy( p_vout );        
        free( p_vout );        
        return( NULL );        
154
    }     
Vincent Seguin's avatar
Vincent Seguin committed
155

Michel Kaempf's avatar
Michel Kaempf committed
156
    /* Create thread and set locks */
Vincent Seguin's avatar
Vincent Seguin committed
157
    vlc_mutex_init( &p_vout->picture_lock );
158
    vlc_mutex_init( &p_vout->subpicture_lock );    
Vincent Seguin's avatar
Vincent Seguin committed
159 160 161
    vlc_mutex_init( &p_vout->change_lock );    
    vlc_mutex_lock( &p_vout->change_lock );    
    if( vlc_thread_create( &p_vout->thread_id, "video output", (void *) RunThread, (void *) p_vout) )
Michel Kaempf's avatar
Michel Kaempf committed
162
    {
163
        intf_ErrMsg("error: %s\n", strerror(ENOMEM));
Vincent Seguin's avatar
Vincent Seguin committed
164 165
        vout_UnloadFont( p_vout->p_default_font );
        vout_UnloadFont( p_vout->p_large_font );        
Vincent Seguin's avatar
Vincent Seguin committed
166
	vout_SysDestroy( p_vout );
Michel Kaempf's avatar
Michel Kaempf committed
167 168 169 170
        free( p_vout );
        return( NULL );
    }   

171
    intf_Msg("Video display initialized (%dx%d, %d bpp)\n", 
172 173
             p_vout->i_width, p_vout->i_height, p_vout->i_screen_depth );    

Michel Kaempf's avatar
Michel Kaempf committed
174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189
    /* If status is NULL, wait until the thread is created */
    if( pi_status == NULL )
    {
        do
        {            
            msleep( THREAD_SLEEP );
        }while( (i_status != THREAD_READY) && (i_status != THREAD_ERROR) 
                && (i_status != THREAD_FATAL) );
        if( i_status != THREAD_READY )
        {
            return( NULL );            
        }        
    }
    return( p_vout );
}

190
/******************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
191
 * vout_DestroyThread: destroys a previously created thread
192
 ******************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
193 194 195 196
 * Destroy a terminated thread. 
 * The function will request a destruction of the specified thread. If pi_error
 * is NULL, it will return once the thread is destroyed. Else, it will be 
 * update using one of the THREAD_* constants.
197
 ******************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
198 199
void vout_DestroyThread( vout_thread_t *p_vout, int *pi_status )
{  
200
    int     i_status;                                        /* thread status */
Michel Kaempf's avatar
Michel Kaempf committed
201 202

    /* Set status */
203
    intf_DbgMsg("\n");
Michel Kaempf's avatar
Michel Kaempf committed
204
    p_vout->pi_status = (pi_status != NULL) ? pi_status : &i_status;
Vincent Seguin's avatar
Vincent Seguin committed
205
    *p_vout->pi_status = THREAD_DESTROY;    
Michel Kaempf's avatar
Michel Kaempf committed
206 207 208 209 210
     
    /* Request thread destruction */
    p_vout->b_die = 1;

    /* If status is NULL, wait until thread has been destroyed */
211
    if( pi_status == NULL )
Michel Kaempf's avatar
Michel Kaempf committed
212 213 214 215 216 217 218 219 220
    {
        do
        {
            msleep( THREAD_SLEEP );
        }while( (i_status != THREAD_OVER) && (i_status != THREAD_ERROR) 
                && (i_status != THREAD_FATAL) );   
    }
}

221
/******************************************************************************
222
 * vout_DisplaySubPicture: display a subpicture unit
223
 ******************************************************************************
224 225
 * Remove the reservation flag of an subpicture, which will cause it to be ready 
 * for display. The picture does not need to be locked, since it is ignored by
Vincent Seguin's avatar
Vincent Seguin committed
226
 * the output thread if is reserved.
227
 ******************************************************************************/
228
void  vout_DisplaySubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
Vincent Seguin's avatar
Vincent Seguin committed
229 230
{
#ifdef DEBUG_VIDEO
231 232
    char        psz_begin_date[MSTRTIME_MAX_SIZE];  /* buffer for date string */
    char        psz_end_date[MSTRTIME_MAX_SIZE];    /* buffer for date string */
Vincent Seguin's avatar
Vincent Seguin committed
233 234 235 236
#endif

#ifdef DEBUG
    /* Check if status is valid */
237
    if( p_subpic->i_status != RESERVED_SUBPICTURE )
Vincent Seguin's avatar
Vincent Seguin committed
238
    {
239 240
        intf_DbgMsg("error: subpicture %p has invalid status %d\n", p_subpic, 
                    p_subpic->i_status );       
Vincent Seguin's avatar
Vincent Seguin committed
241 242 243 244
    }   
#endif

    /* Remove reservation flag */
245
    p_subpic->i_status = READY_SUBPICTURE;
Vincent Seguin's avatar
Vincent Seguin committed
246 247

#ifdef DEBUG_VIDEO
248
    /* Send subpicture informations */
249 250 251 252
    intf_DbgMsg("subpicture %p: type=%d, begin date=%s, end date=%s\n", 
                p_subpic, p_subpic->i_type, 
                mstrtime( psz_begin_date, p_subpic->begin_date ), 
                mstrtime( psz_end_date, p_subpic->end_date ) );    
Vincent Seguin's avatar
Vincent Seguin committed
253 254 255
#endif
}

256
/******************************************************************************
257
 * vout_CreateSubPicture: allocate an subpicture in the video output heap.
258
 ******************************************************************************
259
 * This function create a reserved subpicture in the video output heap. 
Vincent Seguin's avatar
Vincent Seguin committed
260
 * A null pointer is returned if the function fails. This method provides an
261
 * already allocated zone of memory in the spu data fields. It needs locking
Vincent Seguin's avatar
Vincent Seguin committed
262
 * since several pictures can be created by several producers threads. 
263
 ******************************************************************************/
264 265
subpicture_t *vout_CreateSubPicture( vout_thread_t *p_vout, int i_type, 
                                     int i_size )
Vincent Seguin's avatar
Vincent Seguin committed
266
{
267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370
    int                 i_subpic;                          /* subpicture index */
    subpicture_t *      p_free_subpic = NULL;         /* first free subpicture */    
    subpicture_t *      p_destroyed_subpic = NULL;   /* first destroyed subpic */

    /* Get lock */
    vlc_mutex_lock( &p_vout->subpicture_lock );

    /* 
     * Look for an empty place 
     */
    for( i_subpic = 0; i_subpic < VOUT_MAX_PICTURES; i_subpic++ )
    {
	if( p_vout->p_subpicture[i_subpic].i_status == DESTROYED_SUBPICTURE )
	{
	    /* Subpicture is marked for destruction, but is still allocated */
	    if( (p_vout->p_subpicture[i_subpic].i_type  == i_type)   &&
		(p_vout->p_subpicture[i_subpic].i_size  >= i_size) )
	    {
		/* Memory size do match or is smaller : memory will not be reallocated, 
                 * and function can end immediately - this is the best possible case, 
                 * since no memory allocation needs to be done */
		p_vout->p_subpicture[i_subpic].i_status = RESERVED_SUBPICTURE;
#ifdef DEBUG_VIDEO
                intf_DbgMsg("subpicture %p (in destroyed subpicture slot)\n", 
                            &p_vout->p_subpicture[i_subpic] );                
#endif
		vlc_mutex_unlock( &p_vout->subpicture_lock );
		return( &p_vout->p_subpicture[i_subpic] );
	    }
	    else if( p_destroyed_subpic == NULL )
	    {
		/* Memory size do not match, but subpicture index will be kept in
		 * case no other place are left */
		p_destroyed_subpic = &p_vout->p_subpicture[i_subpic];                
	    }	    
	}
        else if( (p_free_subpic == NULL) && 
                 (p_vout->p_subpicture[i_subpic].i_status == FREE_SUBPICTURE ))
        {
	    /* Subpicture is empty and ready for allocation */
            p_free_subpic = &p_vout->p_subpicture[i_subpic];
        }
    }

    /* If no free subpicture is available, use a destroyed subpicture */
    if( (p_free_subpic == NULL) && (p_destroyed_subpic != NULL ) )
    { 
	/* No free subpicture or matching destroyed subpicture has been found, but
	 * a destroyed subpicture is still avalaible */
        free( p_destroyed_subpic->p_data );        
        p_free_subpic = p_destroyed_subpic;
    }

    /*
     * Prepare subpicture
     */
    if( p_free_subpic != NULL )
    {
        /* Allocate memory */
        switch( i_type )
        {
        case TEXT_SUBPICTURE:                               /* text subpicture */
            p_free_subpic->p_data = malloc( i_size + 1 );             
            break;
#ifdef DEBUG
        default:
            intf_DbgMsg("error: unknown subpicture type %d\n", i_type );
            p_free_subpic->p_data   =  NULL;            
            break;            
#endif    
        }

        if( p_free_subpic->p_data != NULL )
        {                    /* Copy subpicture informations, set some default values */
            p_free_subpic->i_type                      = i_type;
            p_free_subpic->i_status                    = RESERVED_SUBPICTURE;
            p_free_subpic->i_size                      = i_size;            
            p_free_subpic->i_x                         = 0;
            p_free_subpic->i_y                         = 0;             
            p_free_subpic->i_width                     = 0;
            p_free_subpic->i_height                    = 0;
            p_free_subpic->i_horizontal_align          = CENTER_RALIGN;             
            p_free_subpic->i_vertical_align            = CENTER_RALIGN;             
        }
        else
        {
            /* Memory allocation failed : set subpicture as empty */
            p_free_subpic->i_type   =  EMPTY_SUBPICTURE;            
            p_free_subpic->i_status =  FREE_SUBPICTURE;            
            p_free_subpic =            NULL;            
            intf_ErrMsg("warning: %s\n", strerror( ENOMEM ) );            
        }
        
#ifdef DEBUG_VIDEO
        intf_DbgMsg("subpicture %p (in free subpicture slot)\n", p_free_subpic );        
#endif
        vlc_mutex_unlock( &p_vout->subpicture_lock );
        return( p_free_subpic );
    }
    
    /* No free or destroyed subpicture could be found */
    intf_DbgMsg( "warning: heap is full\n" );
    vlc_mutex_unlock( &p_vout->subpicture_lock );
    return( NULL );
Vincent Seguin's avatar
Vincent Seguin committed
371 372
}

373
/******************************************************************************
374
 * vout_DestroySubPicture: remove a subpicture from the heap
375
 ******************************************************************************
376
 * This function frees a previously reserved subpicture.
Vincent Seguin's avatar
Vincent Seguin committed
377
 * It is meant to be used when the construction of a picture aborted.
378 379
 * This function does not need locking since reserved subpictures are ignored 
 * by the output thread.
380
 ******************************************************************************/
381
void vout_DestroySubPicture( vout_thread_t *p_vout, subpicture_t *p_subpic )
Vincent Seguin's avatar
Vincent Seguin committed
382 383
{
#ifdef DEBUG
384 385
   /* Check if status is valid */
   if( p_subpic->i_status != RESERVED_SUBPICTURE )
Vincent Seguin's avatar
Vincent Seguin committed
386
   {
387 388
       intf_DbgMsg("error: subpicture %p has invalid status %d\n", 
                   p_subpic, p_subpic->i_status );       
Vincent Seguin's avatar
Vincent Seguin committed
389 390 391
   }   
#endif

392
    p_subpic->i_status = DESTROYED_SUBPICTURE;
Vincent Seguin's avatar
Vincent Seguin committed
393 394

#ifdef DEBUG_VIDEO
395
    intf_DbgMsg("subpicture %p\n", p_subpic);    
Vincent Seguin's avatar
Vincent Seguin committed
396 397 398
#endif
}

Vincent Seguin's avatar
Vincent Seguin committed
399
/*******************************************************************************
Vincent Seguin's avatar
Vincent Seguin committed
400
 * vout_DisplayPicture: display a picture
Vincent Seguin's avatar
Vincent Seguin committed
401
 *******************************************************************************
Vincent Seguin's avatar
Vincent Seguin committed
402
 * Remove the reservation flag of a picture, which will cause it to be ready for
403 404
 * display. The picture won't be displayed until vout_DatePicture has been 
 * called.
Vincent Seguin's avatar
Vincent Seguin committed
405
 *******************************************************************************/
Vincent Seguin's avatar
Vincent Seguin committed
406
void  vout_DisplayPicture( vout_thread_t *p_vout, picture_t *p_pic )
Michel Kaempf's avatar
Michel Kaempf committed
407
{
408 409
    vlc_mutex_lock( &p_vout->picture_lock );
    switch( p_pic->i_status )
410
    {
411 412 413 414 415 416 417 418 419 420
    case RESERVED_PICTURE:        
        p_pic->i_status = RESERVED_DISP_PICTURE;
        break;        
    case RESERVED_DATED_PICTURE:
        p_pic->i_status = READY_PICTURE;
        break;        
#ifdef DEBUG
    default:        
        intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status );    
        break;        
421
#endif
422
    }
Michel Kaempf's avatar
Michel Kaempf committed
423

424
#ifdef DEBUG_VIDEO
Vincent Seguin's avatar
Vincent Seguin committed
425
    intf_DbgMsg("picture %p\n", p_pic);
426
#endif
427
    vlc_mutex_unlock( &p_vout->picture_lock );
Michel Kaempf's avatar
Michel Kaempf committed
428 429
}

Vincent Seguin's avatar
Vincent Seguin committed
430
/*******************************************************************************
431
 * vout_DatePicture: date a picture
Vincent Seguin's avatar
Vincent Seguin committed
432
 *******************************************************************************
433
 * Remove the reservation flag of a picture, which will cause it to be ready for
434 435
 * display. The picture won't be displayed until vout_DisplayPicture has been 
 * called.
Vincent Seguin's avatar
Vincent Seguin committed
436
 *******************************************************************************/
437 438
void  vout_DatePicture( vout_thread_t *p_vout, picture_t *p_pic, mtime_t date )
{
Vincent Seguin's avatar
Vincent Seguin committed
439 440 441 442
#ifdef DEBUG_VIDEO
    char        psz_date[MSTRTIME_MAX_SIZE];                           /* date */
#endif

443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460
    vlc_mutex_lock( &p_vout->picture_lock );
    p_pic->date = date;    
    switch( p_pic->i_status )
    {
    case RESERVED_PICTURE:        
        p_pic->i_status = RESERVED_DATED_PICTURE;
        break;        
    case RESERVED_DISP_PICTURE:
        p_pic->i_status = READY_PICTURE;
        break;        
#ifdef DEBUG
    default:        
        intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status );    
        break;        
#endif
    }

#ifdef DEBUG_VIDEO
Vincent Seguin's avatar
Vincent Seguin committed
461
    intf_DbgMsg("picture %p, display date: %s\n", p_pic, mstrtime( psz_date, p_pic->date) );
462
#endif
463
    vlc_mutex_unlock( &p_vout->picture_lock );
464 465
}

466
/******************************************************************************
Vincent Seguin's avatar
Vincent Seguin committed
467
 * vout_CreatePicture: allocate a picture in the video output heap.
468
 ******************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
469
 * This function create a reserved image in the video output heap. 
Vincent Seguin's avatar
Vincent Seguin committed
470
 * A null pointer is returned if the function fails. This method provides an
471
 * already allocated zone of memory in the picture data fields. It needs locking
472
 * since several pictures can be created by several producers threads. 
473
 ******************************************************************************/
Vincent Seguin's avatar
Vincent Seguin committed
474
picture_t *vout_CreatePicture( vout_thread_t *p_vout, int i_type, 
475
			       int i_width, int i_height )
Michel Kaempf's avatar
Michel Kaempf committed
476
{
477 478 479 480
    int         i_picture;                                   /* picture index */
    int         i_chroma_width = 0;                           /* chroma width */    
    picture_t * p_free_picture = NULL;                  /* first free picture */    
    picture_t * p_destroyed_picture = NULL;        /* first destroyed picture */    
Michel Kaempf's avatar
Michel Kaempf committed
481

Vincent Seguin's avatar
Vincent Seguin committed
482
    /* Get lock */
Vincent Seguin's avatar
Vincent Seguin committed
483
    vlc_mutex_lock( &p_vout->picture_lock );
Michel Kaempf's avatar
Michel Kaempf committed
484

Vincent Seguin's avatar
Vincent Seguin committed
485 486 487
    /* 
     * Look for an empty place 
     */
488
    for( i_picture = 0; i_picture < VOUT_MAX_PICTURES; i_picture++ )
Vincent Seguin's avatar
Vincent Seguin committed
489 490 491
    {
	if( p_vout->p_picture[i_picture].i_status == DESTROYED_PICTURE )
	{
492 493 494
	    /* Picture is marked for destruction, but is still allocated - note
             * that if width and type are the same for two pictures, chroma_width 
             * should also be the same */
Vincent Seguin's avatar
Vincent Seguin committed
495 496
	    if( (p_vout->p_picture[i_picture].i_type           == i_type)   &&
		(p_vout->p_picture[i_picture].i_height         == i_height) &&
497
		(p_vout->p_picture[i_picture].i_width          == i_width) )
Vincent Seguin's avatar
Vincent Seguin committed
498 499 500 501 502
	    {
		/* Memory size do match : memory will not be reallocated, and function
                 * can end immediately - this is the best possible case, since no
                 * memory allocation needs to be done */
		p_vout->p_picture[i_picture].i_status = RESERVED_PICTURE;
503 504 505 506
#ifdef DEBUG_VIDEO
                intf_DbgMsg("picture %p (in destroyed picture slot)\n", 
                            &p_vout->p_picture[i_picture] );                
#endif
Vincent Seguin's avatar
Vincent Seguin committed
507
		vlc_mutex_unlock( &p_vout->picture_lock );
Vincent Seguin's avatar
Vincent Seguin committed
508 509 510 511 512 513 514 515 516 517 518 519 520 521 522
		return( &p_vout->p_picture[i_picture] );
	    }
	    else if( p_destroyed_picture == NULL )
	    {
		/* Memory size do not match, but picture index will be kept in
		 * case no other place are left */
		p_destroyed_picture = &p_vout->p_picture[i_picture];                
	    }	    
	}
        else if( (p_free_picture == NULL) && 
                 (p_vout->p_picture[i_picture].i_status == FREE_PICTURE ))
        {
	    /* Picture is empty and ready for allocation */
            p_free_picture = &p_vout->p_picture[i_picture];            
        }
Michel Kaempf's avatar
Michel Kaempf committed
523 524
    }

Vincent Seguin's avatar
Vincent Seguin committed
525 526 527 528 529 530 531
    /* If no free picture is available, use a destroyed picture */
    if( (p_free_picture == NULL) && (p_destroyed_picture != NULL ) )
    { 
	/* No free picture or matching destroyed picture has been found, but
	 * a destroyed picture is still avalaible */
        free( p_destroyed_picture->p_data );        
        p_free_picture = p_destroyed_picture;        
Michel Kaempf's avatar
Michel Kaempf committed
532 533
    }

Vincent Seguin's avatar
Vincent Seguin committed
534 535 536 537 538 539 540
    /*
     * Prepare picture
     */
    if( p_free_picture != NULL )
    {
        /* Allocate memory */
        switch( i_type )
Michel Kaempf's avatar
Michel Kaempf committed
541
        {
542
        case YUV_420_PICTURE:          /* YUV 420: 1,1/4,1/4 samples per pixel */
Vincent Seguin's avatar
Vincent Seguin committed
543 544
            i_chroma_width = i_width / 2;            
            p_free_picture->p_data = malloc( i_height * i_chroma_width * 3 * sizeof( yuv_data_t ) );
545
            p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
Vincent Seguin's avatar
Vincent Seguin committed
546 547
            p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*4/2;
            p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*5/2;
548 549
            break;
        case YUV_422_PICTURE:          /* YUV 422: 1,1/2,1/2 samples per pixel */
550 551 552
            i_chroma_width = i_width / 2;            
            p_free_picture->p_data = malloc( i_height * i_chroma_width * 4 * sizeof( yuv_data_t ) );
            p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
Vincent Seguin's avatar
Vincent Seguin committed
553 554
            p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*2;
            p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*3;
555 556
            break;
        case YUV_444_PICTURE:              /* YUV 444: 1,1,1 samples per pixel */
557 558 559
            i_chroma_width = i_width;            
            p_free_picture->p_data = malloc( i_height * i_chroma_width * 3 * sizeof( yuv_data_t ) );
            p_free_picture->p_y = (yuv_data_t *)p_free_picture->p_data;
Vincent Seguin's avatar
Vincent Seguin committed
560 561
            p_free_picture->p_u = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width;
            p_free_picture->p_v = (yuv_data_t *)p_free_picture->p_data +i_height*i_chroma_width*2;
Vincent Seguin's avatar
Vincent Seguin committed
562 563 564
            break;                
#ifdef DEBUG
        default:
565
            intf_DbgMsg("error: unknown picture type %d\n", i_type );
566 567
            p_free_picture->p_data   =  NULL;            
            break;            
Vincent Seguin's avatar
Vincent Seguin committed
568
#endif    
Michel Kaempf's avatar
Michel Kaempf committed
569 570
        }

Vincent Seguin's avatar
Vincent Seguin committed
571 572
        if( p_free_picture->p_data != NULL )
        {        
573
            /* Copy picture informations, set some default values */
574 575
            p_free_picture->i_type                      = i_type;
            p_free_picture->i_status                    = RESERVED_PICTURE;
576
            p_free_picture->i_matrix_coefficients       = 1; 
577 578
            p_free_picture->i_width                     = i_width;
            p_free_picture->i_height                    = i_height;
579 580 581 582 583 584
            p_free_picture->i_chroma_width              = i_chroma_width;            
            p_free_picture->i_display_horizontal_offset = 0;
            p_free_picture->i_display_vertical_offset   = 0;            
            p_free_picture->i_display_width             = i_width;
            p_free_picture->i_display_height            = i_height;
            p_free_picture->i_aspect_ratio              = AR_SQUARE_PICTURE;            
585
            p_free_picture->i_refcount                  = 0;            
Vincent Seguin's avatar
Vincent Seguin committed
586 587 588 589
        }
        else
        {
            /* Memory allocation failed : set picture as empty */
590 591 592 593
            p_free_picture->i_type   =  EMPTY_PICTURE;            
            p_free_picture->i_status =  FREE_PICTURE;            
            p_free_picture =            NULL;            
            intf_ErrMsg("warning: %s\n", strerror( ENOMEM ) );            
Vincent Seguin's avatar
Vincent Seguin committed
594 595
        }
        
596 597 598
#ifdef DEBUG_VIDEO
        intf_DbgMsg("picture %p (in free picture slot)\n", p_free_picture );        
#endif
Vincent Seguin's avatar
Vincent Seguin committed
599
        vlc_mutex_unlock( &p_vout->picture_lock );
Vincent Seguin's avatar
Vincent Seguin committed
600
        return( p_free_picture );
Michel Kaempf's avatar
Michel Kaempf committed
601
    }
Vincent Seguin's avatar
Vincent Seguin committed
602
    
603
    /* No free or destroyed picture could be found */
604
    intf_DbgMsg( "warning: heap is full\n" );
Vincent Seguin's avatar
Vincent Seguin committed
605
    vlc_mutex_unlock( &p_vout->picture_lock );
Vincent Seguin's avatar
Vincent Seguin committed
606
    return( NULL );
Michel Kaempf's avatar
Michel Kaempf committed
607 608
}

609
/******************************************************************************
610
 * vout_DestroyPicture: remove a permanent or reserved picture from the heap
611
 ******************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
612
 * This function frees a previously reserved picture or a permanent
Vincent Seguin's avatar
Vincent Seguin committed
613 614
 * picture. It is meant to be used when the construction of a picture aborted.
 * Note that the picture will be destroyed even if it is linked !
615 616
 * This function does not need locking since reserved pictures are ignored by
 * the output thread.
617
 ******************************************************************************/
Vincent Seguin's avatar
Vincent Seguin committed
618
void vout_DestroyPicture( vout_thread_t *p_vout, picture_t *p_pic )
Michel Kaempf's avatar
Michel Kaempf committed
619
{
620
#ifdef DEBUG
621
   /* Check if picture status is valid */
622 623 624
   if( (p_pic->i_status != RESERVED_PICTURE) && 
       (p_pic->i_status != RESERVED_DATED_PICTURE) &&
       (p_pic->i_status != RESERVED_DISP_PICTURE) )
625
   {
Vincent Seguin's avatar
Vincent Seguin committed
626
       intf_DbgMsg("error: picture %p has invalid status %d\n", p_pic, p_pic->i_status );       
627 628 629
   }   
#endif

Vincent Seguin's avatar
Vincent Seguin committed
630
    p_pic->i_status = DESTROYED_PICTURE;
631 632 633 634

#ifdef DEBUG_VIDEO
    intf_DbgMsg("picture %p\n", p_pic);    
#endif
Michel Kaempf's avatar
Michel Kaempf committed
635 636
}

637
/******************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
638
 * vout_LinkPicture: increment reference counter of a picture
639
 ******************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
640
 * This function increment the reference counter of a picture in the video
641
 * heap. It needs a lock since several producer threads can access the picture.
642
 ******************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
643 644
void vout_LinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
{
Vincent Seguin's avatar
Vincent Seguin committed
645
    vlc_mutex_lock( &p_vout->picture_lock );
Michel Kaempf's avatar
Michel Kaempf committed
646
    p_pic->i_refcount++;
647 648

#ifdef DEBUG_VIDEO
649
    intf_DbgMsg("picture %p refcount=%d\n", p_pic, p_pic->i_refcount );    
650
#endif
651 652

    vlc_mutex_unlock( &p_vout->picture_lock );
Michel Kaempf's avatar
Michel Kaempf committed
653 654
}

655
/******************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
656
 * vout_UnlinkPicture: decrement reference counter of a picture
657
 ******************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
658
 * This function decrement the reference counter of a picture in the video heap.
659
 ******************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
660 661
void vout_UnlinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
{
Vincent Seguin's avatar
Vincent Seguin committed
662
    vlc_mutex_lock( &p_vout->picture_lock );
Michel Kaempf's avatar
Michel Kaempf committed
663
    p_pic->i_refcount--;
664 665 666 667 668 669 670 671 672

#ifdef DEBUG_VIDEO
    if( p_pic->i_refcount < 0 )
    {
        intf_DbgMsg("error: refcount < 0\n");
        p_pic->i_refcount = 0;        
    }    
#endif

Vincent Seguin's avatar
Vincent Seguin committed
673
    if( (p_pic->i_refcount == 0) && (p_pic->i_status == DISPLAYED_PICTURE) )
Michel Kaempf's avatar
Michel Kaempf committed
674
    {
Vincent Seguin's avatar
Vincent Seguin committed
675
	p_pic->i_status = DESTROYED_PICTURE;
Michel Kaempf's avatar
Michel Kaempf committed
676
    }
677 678

#ifdef DEBUG_VIDEO
679
    intf_DbgMsg("picture %p refcount=%d\n", p_pic, p_pic->i_refcount );    
680
#endif
681 682

    vlc_mutex_unlock( &p_vout->picture_lock );
Michel Kaempf's avatar
Michel Kaempf committed
683 684
}

685
/******************************************************************************
686
 * vout_SetBuffers: set buffers adresses
687
 ******************************************************************************
688 689
 * This function is called by system drivers to set buffers video memory 
 * adresses.
690
 ******************************************************************************/
691
void vout_SetBuffers( vout_thread_t *p_vout, void *p_buf1, void *p_buf2 )
692 693
{
    /* No picture previously */
694 695 696 697 698 699 700 701
    p_vout->p_buffer[0].i_pic_x =         0;
    p_vout->p_buffer[0].i_pic_y =         0;
    p_vout->p_buffer[0].i_pic_width =     0;
    p_vout->p_buffer[0].i_pic_height =    0;
    p_vout->p_buffer[1].i_pic_x =         0;
    p_vout->p_buffer[1].i_pic_y =         0;
    p_vout->p_buffer[1].i_pic_width =     0;
    p_vout->p_buffer[1].i_pic_height =    0;
702 703

    /* The first area covers all the screen */
704 705 706 707 708 709 710 711 712 713
    p_vout->p_buffer[0].i_areas =                 1;
    p_vout->p_buffer[0].pi_area_begin[0] =        0;
    p_vout->p_buffer[0].pi_area_end[0] =          p_vout->i_height - 1;
    p_vout->p_buffer[1].i_areas =                 1;
    p_vout->p_buffer[1].pi_area_begin[0] =        0;
    p_vout->p_buffer[1].pi_area_end[0] =          p_vout->i_height - 1;

    /* Set adresses */
    p_vout->p_buffer[0].p_data = p_buf1;    
    p_vout->p_buffer[1].p_data = p_buf2;    
714 715
}

Michel Kaempf's avatar
Michel Kaempf committed
716 717
/* following functions are local */

718
/******************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
719
 * InitThread: initialize video output thread
720
 ******************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
721 722 723
 * This function is called from RunThread and performs the second step of the
 * initialization. It returns 0 on success. Note that the thread's flag are not
 * modified inside this function.
724
 ******************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
725 726 727
static int InitThread( vout_thread_t *p_vout )
{
    /* Update status */
728
    intf_DbgMsg("\n");
Michel Kaempf's avatar
Michel Kaempf committed
729 730
    *p_vout->pi_status = THREAD_START;    

731 732
    /* Initialize output method - this function issues its own error messages */
    if( vout_SysInit( p_vout ) )
Michel Kaempf's avatar
Michel Kaempf committed
733 734 735 736
    {
        return( 1 );
    } 

737
    /* Initialize convertion tables and functions */
738
    if( vout_InitYUV( p_vout ) )
739
    {
740
        intf_ErrMsg("error: can't allocate YUV translation tables\n");
741
        return( 1 );                
Vincent Seguin's avatar
Vincent Seguin committed
742 743
    }
    
Michel Kaempf's avatar
Michel Kaempf committed
744
    /* Mark thread as running and return */
745 746
    p_vout->b_active =          1;    
    *p_vout->pi_status =        THREAD_READY;    
747
    intf_DbgMsg("thread ready\n");    
748
    return( 0 );    
Michel Kaempf's avatar
Michel Kaempf committed
749 750
}

751
/******************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
752
 * RunThread: video output thread
753
 ******************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
754 755 756
 * Video output thread. This function does only returns when the thread is
 * terminated. It handles the pictures arriving in the video heap and the
 * display device events.
757
 ******************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
758 759
static void RunThread( vout_thread_t *p_vout)
{
760
    int             i_index;                                 /* index in heap */
761
    mtime_t         current_date;                             /* current date */
762
    mtime_t         display_date;                             /* display date */    
763 764
    boolean_t       b_display;                                /* display flag */    
    picture_t *     p_pic;                                 /* picture pointer */
765
    subpicture_t *  p_subpic;                           /* subpicture pointer */    
766
     
Michel Kaempf's avatar
Michel Kaempf committed
767
    /* 
768
     * Initialize thread
Michel Kaempf's avatar
Michel Kaempf committed
769 770 771 772
     */
    p_vout->b_error = InitThread( p_vout );
    if( p_vout->b_error )
    {
773
        DestroyThread( p_vout, THREAD_ERROR );
Michel Kaempf's avatar
Michel Kaempf committed
774 775
        return;        
    }    
776
    intf_DbgMsg("\n");
Michel Kaempf's avatar
Michel Kaempf committed
777 778 779 780 781 782

    /*
     * Main loop - it is not executed if an error occured during
     * initialization
     */
    while( (!p_vout->b_die) && (!p_vout->b_error) )
783 784 785
    {
        /* Initialize loop variables */
        p_pic =         NULL;
786
        p_subpic =      NULL;
787 788 789
        display_date =  0;        
        current_date =  mdate();

Vincent Seguin's avatar
Vincent Seguin committed
790
        /* 
791
	 * Find the picture to display - this operation does not need lock,
792
         * since only READY_PICTUREs are handled 
793
         */
794
        for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++ )
Vincent Seguin's avatar
Vincent Seguin committed
795
	{
796
	    if( (p_vout->p_picture[i_index].i_status == READY_PICTURE) &&
Vincent Seguin's avatar
Vincent Seguin committed
797
		( (p_pic == NULL) || 
798
		  (p_vout->p_picture[i_index].date < display_date) ) )
Vincent Seguin's avatar
Vincent Seguin committed
799
	    {
800 801
                p_pic = &p_vout->p_picture[i_index];
                display_date = p_pic->date;                
Vincent Seguin's avatar
Vincent Seguin committed
802 803
	    }
	}
Vincent Seguin's avatar
Vincent Seguin committed
804
 
Vincent Seguin's avatar
Vincent Seguin committed
805
        if( p_pic )
Michel Kaempf's avatar
Michel Kaempf committed
806
        {
807 808
#ifdef STATS
            /* Computes FPS rate */
809
            p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ] = display_date;
810
#endif	    
811
	    if( display_date < current_date )
Vincent Seguin's avatar
Vincent Seguin committed
812
	    {
813 814
		/* Picture is late: it will be destroyed and the thread will sleep and
                 * go to next picture */
Vincent Seguin's avatar
Vincent Seguin committed
815
                vlc_mutex_lock( &p_vout->picture_lock );
816
                p_pic->i_status = p_pic->i_refcount ? DISPLAYED_PICTURE : DESTROYED_PICTURE;
817 818
		intf_DbgMsg( "warning: late picture %p skipped refcount=%d\n", p_pic, p_pic->i_refcount );
                vlc_mutex_unlock( &p_vout->picture_lock );
819
                p_pic =         NULL;                
820
                display_date =  0;                
Vincent Seguin's avatar
Vincent Seguin committed
821
	    }
822
	    else if( display_date > current_date + VOUT_DISPLAY_DELAY )
Vincent Seguin's avatar
Vincent Seguin committed
823 824 825 826
	    {
		/* A picture is ready to be rendered, but its rendering date is
		 * far from the current one so the thread will perform an empty loop
		 * as if no picture were found. The picture state is unchanged */
827
                p_pic =         NULL;                
828
                display_date =  0;                
Vincent Seguin's avatar
Vincent Seguin committed
829
	    }
Michel Kaempf's avatar
Michel Kaempf committed
830
        }
831 832

        /*
833
         * Find the subpicture to display - this operation does not need lock, since
834 835
         * only READY_SUBPICTURES are handled. If no picture has been selected,
         * display_date will depend on the subpicture
836 837 838
         */
        //??

Vincent Seguin's avatar
Vincent Seguin committed
839 840
        /*
         * Perform rendering, sleep and display rendered picture
841
         */
842
        if( p_pic )                          /* picture and perhaps subpicture */
843
        {
844
            b_display = p_vout->b_active;            
845 846
            p_vout->last_display_date = display_date;
            
847 848 849 850 851 852 853
            if( b_display )
            {                
                /* Set picture dimensions and clear buffer */
                SetBufferPicture( p_vout, p_pic );

                /* Render picture and informations */
                RenderPicture( p_vout, p_pic );             
Vincent Seguin's avatar
Vincent Seguin committed
854 855
                if( p_vout->b_info )
                {
856 857 858
                    RenderPictureInfo( p_vout, p_pic );
                    RenderInfo( p_vout );                
                }
Vincent Seguin's avatar
Vincent Seguin committed
859
            }
860
            
Vincent Seguin's avatar
Vincent Seguin committed
861 862 863 864
            /* Remove picture from heap */
            vlc_mutex_lock( &p_vout->picture_lock );
            p_pic->i_status = p_pic->i_refcount ? DISPLAYED_PICTURE : DESTROYED_PICTURE;
            vlc_mutex_unlock( &p_vout->picture_lock );                          
865

866
            /* Render interface and subpicture */
867 868 869 870
            if( b_display && p_vout->b_interface )
            {
                RenderInterface( p_vout );                
            }
871
            if( p_subpic )
872 873 874
            {
                if( b_display )
                {                    
875
                    RenderSubPicture( p_vout, p_subpic );
876 877
                }                

878 879 880 881
                /* Remove subpicture from heap */
                vlc_mutex_lock( &p_vout->subpicture_lock );
                p_subpic->i_status = DESTROYED_SUBPICTURE;
                vlc_mutex_unlock( &p_vout->subpicture_lock );                          
882 883 884
            }

        }
885
        else if( p_subpic )                                /* subpicture alone */
Vincent Seguin's avatar
Vincent Seguin committed
886
        {
887
            b_display = p_vout->b_active;
888
            p_vout->last_display_date = display_date;            
889 890

            if( b_display )
Vincent Seguin's avatar
Vincent Seguin committed
891
            {                
892 893 894
                /* Clear buffer */
                SetBufferPicture( p_vout, NULL );

895
                /* Render informations, interface and subpicture */
Vincent Seguin's avatar
Vincent Seguin committed
896
                if( p_vout->b_info )
897 898 899 900 901 902 903
                {
                    RenderInfo( p_vout );
                }
                if( p_vout->b_interface )
                {
                    RenderInterface( p_vout );
                }
904
                RenderSubPicture( p_vout, p_subpic );            
Vincent Seguin's avatar
Vincent Seguin committed
905
            }            
906

907 908 909 910
            /* Remove subpicture from heap */
            vlc_mutex_lock( &p_vout->subpicture_lock );
            p_subpic->i_status = DESTROYED_SUBPICTURE;
            vlc_mutex_unlock( &p_vout->subpicture_lock );                          
Vincent Seguin's avatar
Vincent Seguin committed
911
        }
912 913
        else if( p_vout->b_active )          /* idle or interface screen alone */
        {
914
            if( p_vout->b_interface && 0 /* && ?? intf_change */ )
915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937
            {
                /* Interface has changed, so a new rendering is required - force
                 * it by setting last idle date to 0 */
                p_vout->last_idle_date = 0;                
            }

            /* Render idle screen and update idle date, then render interface if
             * required */
            b_display = RenderIdle( p_vout );
            if( b_display )
            {                
                p_vout->last_idle_date = current_date;
                if( p_vout->b_interface )
                {
                    RenderInterface( p_vout );                
                }
            }
            
        }       
        else
        {
            b_display = 0;            
        }        
Vincent Seguin's avatar
Vincent Seguin committed
938

939 940 941 942 943 944 945 946 947
        /*
         * Sleep, wake up and display rendered picture
         */

#ifdef STATS