video_output.c 34.1 KB
Newer Older
Michel Kaempf's avatar
Michel Kaempf committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
/*******************************************************************************
 * video_output.c : video output thread
 * (c)1999 VideoLAN
 *******************************************************************************
 * 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.
 *******************************************************************************/

/*******************************************************************************
 * Preamble
 *******************************************************************************/
#include <errno.h> 
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
Vincent Seguin's avatar
Vincent Seguin committed
17 18

#ifdef VIDEO_X11
Michel Kaempf's avatar
Michel Kaempf committed
19
#include <X11/Xlib.h>
Vincent Seguin's avatar
Vincent Seguin committed
20
#endif
Michel Kaempf's avatar
Michel Kaempf committed
21 22 23 24

#include "common.h"
#include "config.h"
#include "mtime.h"
25
#include "vlc_thread.h"
Michel Kaempf's avatar
Michel Kaempf committed
26 27
#include "video.h"
#include "video_output.h"
Vincent Seguin's avatar
Vincent Seguin committed
28 29 30 31 32 33
#include "video_sys.h"
#include "intf_msg.h"

/*******************************************************************************
 * Macros
 *******************************************************************************/
34 35 36

/* CLIP_BYTE: return value if between 0 and 255, else return nearest boundary 
 * (0 or 255) */
Vincent Seguin's avatar
Vincent Seguin committed
37 38
#define CLIP_BYTE( i_val ) ( (i_val < 0) ? 0 : ((i_val > 255) ? 255 : i_val) )

39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79
/* YUV_TRANSFORM_16: parametric macro. Due to the high performance need of this
 * loop, all possible conditions evaluations are made outside the transformation
 * loop. However, the code does not change much for two different loops. This 
 * macro allows to change slightly the content of the loop without having to
 * copy and paste code. It is used in RenderYUVPicture function.
 */
#define YUV_TRANSFORM( CHROMA, TRANS_RED, TRANS_GREEN, TRANS_BLUE, P_PIC ) \
/* Main loop */                                                         \
for (i_pic_y=0; i_pic_y < p_pic->i_height ; i_pic_y++)                  \
{                                                                       \
    for (i_pic_x=0; i_pic_x< p_pic->i_width; i_pic_x+=2)                \
    {                                                                   \
        /* First sample (complete) */                                   \
        i_y = 76309 * *p_y++ - 1188177;                                 \
        i_u = *p_u++ - 128;                                             \
        i_v = *p_v++ - 128;                                             \
        *P_PIC++ =                                                      \
            TRANS_RED   [(i_y+i_crv*i_v)                >>16] |         \
            TRANS_GREEN [(i_y-i_cgu*i_u-i_cgv*i_v)      >>16] |         \
            TRANS_BLUE  [(i_y+i_cbu*i_u)                >>16];          \
        i_y = 76309 * *p_y++ - 1188177;                                 \
        /* Second sample (partial) */                                   \
        if( CHROMA == 444 )                                             \
        {                                                               \
            i_u = *p_u++ - 128;                                         \
            i_v = *p_v++ - 128;                                         \
        }                                                               \
        *P_PIC++ =                                                      \
            TRANS_RED   [(i_y+i_crv*i_v)                >>16] |         \
            TRANS_GREEN [(i_y-i_cgu*i_u-i_cgv*i_v)      >>16] |         \
            TRANS_BLUE  [(i_y+i_cbu*i_u)                >>16];          \
    }                                                                   \
    if( (CHROMA == 420) && !(i_pic_y & 0x1) )                           \
    {                                                                   \
        p_u -= p_pic->i_width;                                          \
        p_v -= p_pic->i_width;                                          \
    }                                                                   \
    /* Skip until beginning of next line */                             \
    P_PIC += i_pic_eol_offset - p_pic->i_width;                         \
}

Vincent Seguin's avatar
Vincent Seguin committed
80 81 82
/*******************************************************************************
 * Constants
 *******************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
83

Vincent Seguin's avatar
Vincent Seguin committed
84
/* RGB/YUV inversion matrix (ISO/IEC 13818-2 section 6.3.6, table 6.9) */
85
int matrix_coefficients_table[8][4] =
Vincent Seguin's avatar
Vincent Seguin committed
86 87 88 89 90 91 92 93 94 95 96 97
{
  {117504, 138453, 13954, 34903},       /* no sequence_display_extension */
  {117504, 138453, 13954, 34903},       /* ITU-R Rec. 709 (1990) */
  {104597, 132201, 25675, 53279},       /* unspecified */
  {104597, 132201, 25675, 53279},       /* reserved */
  {104448, 132798, 24759, 53109},       /* FCC */
  {104597, 132201, 25675, 53279},       /* ITU-R Rec. 624-4 System B, G */
  {104597, 132201, 25675, 53279},       /* SMPTE 170M */
  {117579, 136230, 16907, 35559}        /* SMPTE 240M (1987) */
};

/*******************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
98
 * Local prototypes
Vincent Seguin's avatar
Vincent Seguin committed
99
 *******************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
100 101 102 103 104
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 );

Vincent Seguin's avatar
Vincent Seguin committed
105
static void     RenderPicture   ( vout_thread_t *p_vout, picture_t *p_pic );
106
static void     RenderYUVPicture( vout_thread_t *p_vout, picture_t *p_pic );
Michel Kaempf's avatar
Michel Kaempf committed
107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123

/*******************************************************************************
 * vout_CreateThread: creates a new video output thread
 *******************************************************************************
 * This function creates a new video output thread, and returns a pointer
 * to its description. On error, it returns NULL.
 * Following configuration properties are used:
 *  VIDEO_CFG_SIZE      video heap maximal size
 *  VIDEO_CFG_WIDTH     window width
 *  VIDEO_CFG_HEIGHT    window height 
 * Using X11 display method (the only one supported yet):
 *  VIDEO_CFG_DISPLAY   display used
 *  VIDEO_CFG_TITLE     window title
 *  VIDEO_CFG_SHM_EXT   try to use XShm extension
 * If pi_status is NULL, then the function will block until the thread is ready.
 * If not, pi_error will be updated using one of the THREAD_* constants.
 *******************************************************************************/
Vincent Seguin's avatar
Vincent Seguin committed
124 125
vout_thread_t * vout_CreateThread               ( 
#if defined(VIDEO_X11)
126
                                                  char *psz_display, Window root_window, 
Vincent Seguin's avatar
Vincent Seguin committed
127 128 129 130 131
#elif defined(VIDEO_FB)
                                                  //??
#endif
                                                  int i_width, int i_height, int *pi_status 
                                                )
Michel Kaempf's avatar
Michel Kaempf committed
132 133 134 135
{
    vout_thread_t * p_vout;                               /* thread descriptor */
    int             i_status;                                 /* thread status */

Vincent Seguin's avatar
Vincent Seguin committed
136
    /* Allocate descriptor and create method */
Michel Kaempf's avatar
Michel Kaempf committed
137 138 139 140 141
    p_vout = (vout_thread_t *) malloc( sizeof(vout_thread_t) );
    if( p_vout == NULL )                                              /* error */
    {
        return( NULL );
    }
142
    intf_DbgMsg( "%p\n", p_vout );
Vincent Seguin's avatar
Vincent Seguin committed
143 144
    if( vout_SysCreate( p_vout
#if defined(VIDEO_X11)
145
                        , psz_display, root_window 
Vincent Seguin's avatar
Vincent Seguin committed
146 147 148 149
#elif defined(VIDEO_FB)
                        //??
#endif
        ) )
Michel Kaempf's avatar
Michel Kaempf committed
150
    {
Vincent Seguin's avatar
Vincent Seguin committed
151 152
      free( p_vout );
      return( NULL );
Michel Kaempf's avatar
Michel Kaempf committed
153
    }
Vincent Seguin's avatar
Vincent Seguin committed
154 155 156 157 158 159 160 161 162
  
    /* Initialize */
    p_vout->i_width            = i_width;
    p_vout->i_height           = i_height;
    p_vout->pi_status          = (pi_status != NULL) ? pi_status : &i_status;
    *p_vout->pi_status         = THREAD_CREATE;
    p_vout->b_die              = 0;
    p_vout->b_error            = 0;    
    p_vout->b_active           = 0;
Michel Kaempf's avatar
Michel Kaempf committed
163 164

    /* Create thread and set locks */
Vincent Seguin's avatar
Vincent Seguin committed
165 166 167
    vlc_mutex_init( &p_vout->lock );
    if( vlc_thread_create( &p_vout->thread_id, "video output", 
			   (void *) RunThread, (void *) p_vout) )
Michel Kaempf's avatar
Michel Kaempf committed
168 169
    {
        intf_ErrMsg("vout error: %s\n", strerror(ENOMEM));
Vincent Seguin's avatar
Vincent Seguin committed
170
	vout_SysDestroy( p_vout );
Michel Kaempf's avatar
Michel Kaempf committed
171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203
        free( p_vout );
        return( NULL );
    }   

    /* 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 );
}

/*******************************************************************************
 * vout_DestroyThread: destroys a previously created thread
 *******************************************************************************
 * 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.
 *******************************************************************************/
void vout_DestroyThread( vout_thread_t *p_vout, int *pi_status )
{  
    int     i_status;                                         /* thread status */

204
    intf_DbgMsg( "%p\n", p_vout );
Vincent Seguin's avatar
Vincent Seguin committed
205

Michel Kaempf's avatar
Michel Kaempf committed
206 207
    /* Set status */
    p_vout->pi_status = (pi_status != NULL) ? pi_status : &i_status;
Vincent Seguin's avatar
Vincent Seguin committed
208
    *p_vout->pi_status = THREAD_DESTROY;    
Michel Kaempf's avatar
Michel Kaempf committed
209 210 211 212 213
     
    /* Request thread destruction */
    p_vout->b_die = 1;

    /* If status is NULL, wait until thread has been destroyed */
214
    if( pi_status == NULL )
Michel Kaempf's avatar
Michel Kaempf committed
215 216 217 218 219 220 221 222 223 224
    {
        do
        {
            msleep( THREAD_SLEEP );
        }while( (i_status != THREAD_OVER) && (i_status != THREAD_ERROR) 
                && (i_status != THREAD_FATAL) );   
    }
}

/*******************************************************************************
Vincent Seguin's avatar
Vincent Seguin committed
225
 * vout_DisplayPicture: display a picture
Michel Kaempf's avatar
Michel Kaempf committed
226
 *******************************************************************************
Vincent Seguin's avatar
Vincent Seguin committed
227 228
 * Remove the reservation flag of a picture, which will cause it to be ready for
 * display.
Michel Kaempf's avatar
Michel Kaempf committed
229
 *******************************************************************************/
Vincent Seguin's avatar
Vincent Seguin committed
230
void  vout_DisplayPicture( vout_thread_t *p_vout, picture_t *p_pic )
Michel Kaempf's avatar
Michel Kaempf committed
231
{
Vincent Seguin's avatar
Vincent Seguin committed
232
    vlc_mutex_lock( &p_vout->lock );
Michel Kaempf's avatar
Michel Kaempf committed
233 234

    /* Remove reservation flag */
Vincent Seguin's avatar
Vincent Seguin committed
235
    p_pic->i_status = READY_PICTURE;
Michel Kaempf's avatar
Michel Kaempf committed
236 237 238 239 240 241

#ifdef STATS
    /* Update stats */
    p_vout->c_pictures++;
#endif

Vincent Seguin's avatar
Vincent Seguin committed
242
    vlc_mutex_unlock( &p_vout->lock );
Michel Kaempf's avatar
Michel Kaempf committed
243 244 245
}

/*******************************************************************************
Vincent Seguin's avatar
Vincent Seguin committed
246
 * vout_CreatePicture: allocate a picture in the video output heap.
Michel Kaempf's avatar
Michel Kaempf committed
247 248
 *******************************************************************************
 * This function create a reserved image in the video output heap. 
Vincent Seguin's avatar
Vincent Seguin committed
249 250
 * A null pointer is returned if the function fails. This method provides an
 * already allocated zone of memory in the picture data fields.
Michel Kaempf's avatar
Michel Kaempf committed
251
 *******************************************************************************/
Vincent Seguin's avatar
Vincent Seguin committed
252 253
picture_t *vout_CreatePicture( vout_thread_t *p_vout, int i_type, 
			       int i_width, int i_height, int i_bytes_per_line )
Michel Kaempf's avatar
Michel Kaempf committed
254
{
Vincent Seguin's avatar
Vincent Seguin committed
255 256 257
    int         i_picture;                                    /* picture index */
    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
258

Vincent Seguin's avatar
Vincent Seguin committed
259 260
    /* Get lock */
    vlc_mutex_lock( &p_vout->lock );
Michel Kaempf's avatar
Michel Kaempf committed
261

Vincent Seguin's avatar
Vincent Seguin committed
262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296
    /* 
     * Look for an empty place 
     */
    for( i_picture = 0; 
         i_picture < VOUT_MAX_PICTURES; 
         i_picture++ )
    {
	if( p_vout->p_picture[i_picture].i_status == DESTROYED_PICTURE )
	{
	    /* Picture is marked for destruction, but is still allocated */
	    if( (p_vout->p_picture[i_picture].i_type           == i_type)   &&
		(p_vout->p_picture[i_picture].i_height         == i_height) &&
		(p_vout->p_picture[i_picture].i_bytes_per_line == i_bytes_per_line) )
	    {
		/* 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_width  = i_width;
		p_vout->p_picture[i_picture].i_status = RESERVED_PICTURE;
		vlc_mutex_unlock( &p_vout->lock );
		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
297 298
    }

Vincent Seguin's avatar
Vincent Seguin committed
299 300 301 302 303 304 305
    /* 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
306 307
    }

Vincent Seguin's avatar
Vincent Seguin committed
308 309 310 311 312 313 314
    /*
     * Prepare picture
     */
    if( p_free_picture != NULL )
    {
        /* Allocate memory */
        switch( i_type )
Michel Kaempf's avatar
Michel Kaempf committed
315
        {
316 317
        case YUV_420_PICTURE:           /* YUV picture: 3*16 ?? bits per pixel */
        case YUV_422_PICTURE:
Vincent Seguin's avatar
Vincent Seguin committed
318 319
        case YUV_444_PICTURE:
            p_free_picture->p_data = malloc( 3 * i_height * i_bytes_per_line );                
320 321 322
            p_free_picture->p_y = (yuv_data_t *) p_free_picture->p_data;
            p_free_picture->p_u = (yuv_data_t *)(p_free_picture->p_data + i_height * i_bytes_per_line);
            p_free_picture->p_v = (yuv_data_t *)(p_free_picture->p_data + i_height * i_bytes_per_line * 2);
Vincent Seguin's avatar
Vincent Seguin committed
323 324 325
            break;                
#ifdef DEBUG
        default:
326
            intf_DbgMsg("%p error: unknown picture type %d\n", p_vout, i_type );
Vincent Seguin's avatar
Vincent Seguin committed
327 328
            p_free_picture->p_data = NULL;            
#endif    
Michel Kaempf's avatar
Michel Kaempf committed
329 330
        }

Vincent Seguin's avatar
Vincent Seguin committed
331 332 333 334 335 336 337 338 339
        if( p_free_picture->p_data != NULL )
        {        
            /* Copy picture informations */
            p_free_picture->i_type           = i_type;
            p_free_picture->i_status         = RESERVED_PICTURE;
            p_free_picture->i_width          = i_width;
            p_free_picture->i_height         = i_height;
            p_free_picture->i_bytes_per_line = i_bytes_per_line;
            p_free_picture->i_refcount       = 0;            
340
            p_free_picture->i_matrix_coefficients = 1; // ?? default value            
Vincent Seguin's avatar
Vincent Seguin committed
341 342 343 344 345 346 347
        }
        else
        {
            /* Memory allocation failed : set picture as empty */
            p_free_picture->i_type   = EMPTY_PICTURE;            
            p_free_picture->i_status = FREE_PICTURE;            
            p_free_picture = NULL;            
348
            intf_DbgMsg("%p malloc for new picture failed\n", p_vout );            
Vincent Seguin's avatar
Vincent Seguin committed
349 350 351 352
        }
        
        vlc_mutex_unlock( &p_vout->lock );
        return( p_free_picture );
Michel Kaempf's avatar
Michel Kaempf committed
353
    }
Vincent Seguin's avatar
Vincent Seguin committed
354 355
    
    // No free or destroyed picture could be found
356
    intf_DbgMsg("%p no picture available\n", p_vout );
Vincent Seguin's avatar
Vincent Seguin committed
357 358
    vlc_mutex_unlock( &p_vout->lock );
    return( NULL );
Michel Kaempf's avatar
Michel Kaempf committed
359 360 361 362 363 364
}

/*******************************************************************************
 * vout_RemovePicture: remove a permanent or reserved picture from the heap
 *******************************************************************************
 * This function frees a previously reserved picture or a permanent
Vincent Seguin's avatar
Vincent Seguin committed
365 366
 * 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 !
Michel Kaempf's avatar
Michel Kaempf committed
367
 *******************************************************************************/
Vincent Seguin's avatar
Vincent Seguin committed
368
void vout_DestroyPicture( vout_thread_t *p_vout, picture_t *p_pic )
Michel Kaempf's avatar
Michel Kaempf committed
369
{
Vincent Seguin's avatar
Vincent Seguin committed
370
    vlc_mutex_lock( &p_vout->lock );
Michel Kaempf's avatar
Michel Kaempf committed
371 372

    /* Mark picture for destruction */
Vincent Seguin's avatar
Vincent Seguin committed
373
    p_pic->i_status = DESTROYED_PICTURE;
374
    intf_DbgMsg("%p picture %p destroyed\n", p_vout, p_pic );
Michel Kaempf's avatar
Michel Kaempf committed
375

Vincent Seguin's avatar
Vincent Seguin committed
376
    vlc_mutex_unlock( &p_vout->lock );
Michel Kaempf's avatar
Michel Kaempf committed
377 378 379 380 381 382 383 384 385 386
}

/*******************************************************************************
 * vout_LinkPicture: increment reference counter of a picture
 *******************************************************************************
 * This function increment the reference counter of a picture in the video
 * heap.
 *******************************************************************************/
void vout_LinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
{
Vincent Seguin's avatar
Vincent Seguin committed
387
    vlc_mutex_lock( &p_vout->lock );
Michel Kaempf's avatar
Michel Kaempf committed
388
    p_pic->i_refcount++;
Vincent Seguin's avatar
Vincent Seguin committed
389
    vlc_mutex_unlock( &p_vout->lock );
Michel Kaempf's avatar
Michel Kaempf committed
390 391 392 393 394 395 396 397 398
}

/*******************************************************************************
 * vout_UnlinkPicture: decrement reference counter of a picture
 *******************************************************************************
 * This function decrement the reference counter of a picture in the video heap.
 *******************************************************************************/
void vout_UnlinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
{
Vincent Seguin's avatar
Vincent Seguin committed
399
    vlc_mutex_lock( &p_vout->lock );
Michel Kaempf's avatar
Michel Kaempf committed
400
    p_pic->i_refcount--;
Vincent Seguin's avatar
Vincent Seguin committed
401
    if( (p_pic->i_refcount == 0) && (p_pic->i_status == DISPLAYED_PICTURE) )
Michel Kaempf's avatar
Michel Kaempf committed
402
    {
Vincent Seguin's avatar
Vincent Seguin committed
403
	p_pic->i_status = DESTROYED_PICTURE;
Michel Kaempf's avatar
Michel Kaempf committed
404
    }
Vincent Seguin's avatar
Vincent Seguin committed
405
    vlc_mutex_unlock( &p_vout->lock );    
Michel Kaempf's avatar
Michel Kaempf committed
406 407 408 409 410 411 412 413 414 415 416 417 418 419
}

/* following functions are local */

/*******************************************************************************
 * InitThread: initialize video output thread
 *******************************************************************************
 * 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.
 *******************************************************************************/
static int InitThread( vout_thread_t *p_vout )
{
    int     i_index;                                          /* generic index */    
Vincent Seguin's avatar
Vincent Seguin committed
420
    int     i_pixel_size;     /* pixel size, in bytes, for translations tables */    
Michel Kaempf's avatar
Michel Kaempf committed
421 422 423 424 425

    /* Update status */
    *p_vout->pi_status = THREAD_START;    
    
    /* Initialize pictures */    
Vincent Seguin's avatar
Vincent Seguin committed
426
    for( i_index = 0; i_index < VOUT_MAX_PICTURES; i_index++)
Michel Kaempf's avatar
Michel Kaempf committed
427
    {
Vincent Seguin's avatar
Vincent Seguin committed
428 429
        p_vout->p_picture[i_index].i_type  = EMPTY_PICTURE;
        p_vout->p_picture[i_index].i_status= FREE_PICTURE;
Michel Kaempf's avatar
Michel Kaempf committed
430 431 432 433 434 435 436 437 438 439 440 441 442
    }

    /* Initialize other properties */
    p_vout->i_pictures = 0;
#ifdef STATS
    p_vout->c_loops = 0;
    p_vout->c_idle_loops = 0;
    p_vout->c_pictures = 0;
    p_vout->c_rendered_pictures = 0;
#endif

    /* Initialize output method - width, height, screen depth and bytes per 
     * pixel are initialized by this call. */
Vincent Seguin's avatar
Vincent Seguin committed
443
    if( vout_SysInit( p_vout ) )                        /* error */
Michel Kaempf's avatar
Michel Kaempf committed
444 445 446 447 448
    {
        *p_vout->pi_status = THREAD_ERROR;        
        return( 1 );
    } 

Vincent Seguin's avatar
Vincent Seguin committed
449 450 451 452 453 454 455 456
    /* Allocate translation tables */
    switch( p_vout->i_bytes_per_pixel )
    {
    case 2:                   /* 15 or 16 bpp, use 16 bits translations tables */        
        i_pixel_size = sizeof( u16 );        
        break;                
    case 3:                   /* 24 or 32 bpp, use 32 bits translations tables */        
    case 4:
457
    default:        
Vincent Seguin's avatar
Vincent Seguin committed
458 459 460
        i_pixel_size = sizeof( u32 );
        break;        
    }
461 462 463 464 465 466
    p_vout->pi_trans32_red =   (u32 *)p_vout->pi_trans16_red =   
        (u16 *)malloc( 1024 * i_pixel_size );
    p_vout->pi_trans32_green = (u32 *)p_vout->pi_trans16_green = 
        (u16 *)malloc( 1024 * i_pixel_size );
    p_vout->pi_trans32_blue =  (u32 *)p_vout->pi_trans16_blue =  
        (u16 *)malloc( 1024 * i_pixel_size );
Vincent Seguin's avatar
Vincent Seguin committed
467 468 469 470
    if( (p_vout->pi_trans16_red == NULL) || 
        (p_vout->pi_trans16_green == NULL ) ||
        (p_vout->pi_trans16_blue == NULL ) )
    {
471 472
        intf_ErrMsg("vout error: %s\n", strerror(ENOMEM) );
        *p_vout->pi_status = THREAD_ERROR;   
Vincent Seguin's avatar
Vincent Seguin committed
473 474 475 476 477 478 479 480 481 482 483 484 485
        if( p_vout->pi_trans16_red != NULL )
        {
            free( p_vout->pi_trans16_red );
        }
        if( p_vout->pi_trans16_green != NULL )
        {
            free( p_vout->pi_trans16_green );
        }
        if( p_vout->pi_trans16_blue != NULL )
        {
            free( p_vout->pi_trans16_blue );
        }
        return( 1 );
486
    }              
Vincent Seguin's avatar
Vincent Seguin committed
487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513
    
    /* Translate translation tables */
    p_vout->pi_trans16_red      += 384;
    p_vout->pi_trans16_green    += 384;
    p_vout->pi_trans16_blue     += 384;
    p_vout->pi_trans32_red      += 384;
    p_vout->pi_trans32_green    += 384;
    p_vout->pi_trans32_blue     += 384;

    /* Build translation tables */
    switch( p_vout->i_screen_depth )
    {
    case 15:
        for( i_index = -384; i_index < 640; i_index++) 
        {
            p_vout->pi_trans16_red[i_index]     = (CLIP_BYTE( i_index ) & 0xf8)<<7;
            p_vout->pi_trans16_green[i_index]   = (CLIP_BYTE( i_index ) & 0xf8)<<2;
            p_vout->pi_trans16_blue[i_index]    =  CLIP_BYTE( i_index ) >> 3;
        }
        break;        
    case 16:
        for( i_index = -384; i_index < 640; i_index++) 
        {
            p_vout->pi_trans16_red[i_index]     = (CLIP_BYTE( i_index ) & 0xf8)<<8;
            p_vout->pi_trans16_green[i_index]   = (CLIP_BYTE( i_index ) & 0xf8)<<3;
            p_vout->pi_trans16_blue[i_index]    =  CLIP_BYTE( i_index ) >> 3;
        }
514
        break;        
Vincent Seguin's avatar
Vincent Seguin committed
515 516 517 518 519 520 521 522 523 524 525
    case 24:
    case 32:        
        for( i_index = -384; i_index < 640; i_index++) 
        {
            p_vout->pi_trans32_red[i_index]     =  CLIP_BYTE( i_index ) <<16;
            p_vout->pi_trans32_green[i_index]   =  CLIP_BYTE( i_index ) <<8;
            p_vout->pi_trans32_blue[i_index]    =  CLIP_BYTE( i_index ) ;
        }
        break;        
    }
    
Michel Kaempf's avatar
Michel Kaempf committed
526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543
    /* Mark thread as running and return */
    *p_vout->pi_status = THREAD_READY;    
    intf_DbgMsg("%p -> succeeded\n", p_vout);    
    return(0);    
}

/*******************************************************************************
 * RunThread: video output thread
 *******************************************************************************
 * 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.
 *******************************************************************************/
static void RunThread( vout_thread_t *p_vout)
{
    int             i_picture;                                /* picture index */
    int             i_err;                                       /* error code */
    mtime_t         current_date;                              /* current date */
Vincent Seguin's avatar
Vincent Seguin committed
544
    picture_t *     p_pic = NULL;
Michel Kaempf's avatar
Michel Kaempf committed
545 546 547 548 549 550 551
#ifdef VOUT_DEBUG
    char            sz_date[MSTRTIME_MAX_SIZE];                 /* date buffer */
#endif

    /* 
     * Initialize thread and free configuration 
     */
552
    intf_DbgMsg( "%p begin\n", p_vout );
Michel Kaempf's avatar
Michel Kaempf committed
553 554 555 556 557 558 559 560 561 562 563 564 565
    p_vout->b_error = InitThread( p_vout );
    if( p_vout->b_error )
    {
        free( p_vout );                                  /* destroy descriptor */
        return;        
    }    

    /*
     * Main loop - it is not executed if an error occured during
     * initialization
     */
    while( (!p_vout->b_die) && (!p_vout->b_error) )
    {
Vincent Seguin's avatar
Vincent Seguin committed
566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589
        /* 
	 * Find the picture to display - this is the only operation requiring
	 * the lock on the picture, since once a READY_PICTURE has been found,
	 * it can't be modified by the other threads (except if it is unliked,
	 * but its data remains)
	 */
        vlc_mutex_lock( &p_vout->lock );

	for( i_picture = 0; i_picture < VOUT_MAX_PICTURES; i_picture++ )
	{
	    if( (p_vout->p_picture[i_picture].i_status == READY_PICTURE) &&
		( (p_pic == NULL) || 
		  (p_vout->p_picture[i_picture].date < p_pic->date) ) )
	    {
		p_pic = &p_vout->p_picture[i_picture];
	    }
	}

	vlc_mutex_unlock( &p_vout->lock );

        /* 
	 * Render picture if any
	 */
        if( p_pic )
Michel Kaempf's avatar
Michel Kaempf committed
590
        {
Vincent Seguin's avatar
Vincent Seguin committed
591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621
	    current_date = mdate();
	    if( p_pic->date < current_date )
	    {
		/* Picture is late: it will be destroyed and the thread will go
		 * immediately to next picture */
		vlc_mutex_lock( &p_vout->lock );
		if( p_pic->i_refcount )
		{
		    p_pic->i_status = DISPLAYED_PICTURE;
		}
		else
		{
		    p_pic->i_status = DESTROYED_PICTURE;
		}
		vlc_mutex_unlock( &p_vout->lock );
		intf_ErrMsg( "vout error: picture %p was late - skipped\n", p_pic );
		p_pic = NULL;
	    }
	    else if( p_pic->date > current_date + VOUT_DISPLAY_DELAY )
	    {
		/* 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 */
		p_pic = NULL;
	    }
	    else
	    {
		/* Picture has not yet been displayed, and has a valid display
		 * date : render it */
		RenderPicture( p_vout, p_pic );
	    }
Michel Kaempf's avatar
Michel Kaempf committed
622
        }
Vincent Seguin's avatar
Vincent Seguin committed
623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662
    
        /*
         * Check events, sleep and display picture
	 */
        i_err = vout_SysManage( p_vout );
	if( i_err < 0 )
	{
	    /* A fatal error occured, and the thread must terminate immediately,
	     * without displaying anything - setting b_error to 1 cause the
	     * immediate end of the main while() loop. */
	    p_vout->b_error = 1;
	}
	else 
	{
	    if( p_pic )
	    {
		/* A picture is ready to be displayed : sleep until its display date */
		mwait( p_pic->date );

		if( !i_err )
		{
		    vout_SysDisplay( p_vout );
		}

		/* Picture has been displayed : destroy it */
		vlc_mutex_lock( &p_vout->lock );
		if( p_pic->i_refcount )
		{
		    p_pic->i_status = DISPLAYED_PICTURE;
		}
		else
		{
		    p_pic->i_status = DESTROYED_PICTURE;
		}
		vlc_mutex_unlock( &p_vout->lock );
	    }
	    else
	    {
		/* Sleep to wait for new pictures */
		msleep( VOUT_IDLE_SLEEP );
Michel Kaempf's avatar
Michel Kaempf committed
663
#ifdef STATS
Vincent Seguin's avatar
Vincent Seguin committed
664 665
		/* Update counters */
		p_vout->c_idle_loops++;
Michel Kaempf's avatar
Michel Kaempf committed
666
#endif
Vincent Seguin's avatar
Vincent Seguin committed
667 668
	    }
	}
Michel Kaempf's avatar
Michel Kaempf committed
669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685

#ifdef STATS
        /* Update counters */
        p_vout->c_loops++;
#endif
    } 

    /*
     * Error loop
     */
    if( p_vout->b_error )
    {
        ErrorThread( p_vout );        
    }

    /* End of thread */
    EndThread( p_vout );
686
    intf_DbgMsg( "%p end\n", p_vout );
Michel Kaempf's avatar
Michel Kaempf committed
687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714
}

/*******************************************************************************
 * ErrorThread: RunThread() error loop
 *******************************************************************************
 * This function is called when an error occured during thread main's loop. The
 * thread can still receive feed, but must be ready to terminate as soon as
 * possible.
 *******************************************************************************/
static void ErrorThread( vout_thread_t *p_vout )
{
    /* Wait until a `die' order */
    while( !p_vout->b_die )
    {
        /* Sleep a while */
        msleep( VOUT_IDLE_SLEEP );                
    }
}

/*******************************************************************************
 * EndThread: thread destruction
 *******************************************************************************
 * This function is called when the thread ends after a sucessfull 
 * initialization.
 *******************************************************************************/
static void EndThread( vout_thread_t *p_vout )
{
    int *   pi_status;                                        /* thread status */
Vincent Seguin's avatar
Vincent Seguin committed
715
    int     i_picture;
Michel Kaempf's avatar
Michel Kaempf committed
716 717 718 719 720
        
    /* Store status */
    pi_status = p_vout->pi_status;    
    *pi_status = THREAD_END;    

Vincent Seguin's avatar
Vincent Seguin committed
721 722 723 724 725 726 727 728
    /* Destroy all remaining pictures */
    for( i_picture = 0; i_picture < VOUT_MAX_PICTURES; i_picture++ )
    {
	if( p_vout->p_picture[i_picture].i_status != FREE_PICTURE )
	{
            free( p_vout->p_picture[i_picture].p_data );
        }
    }
Vincent Seguin's avatar
Vincent Seguin committed
729 730 731 732 733

    /* Destroy translation tables - remeber these tables are translated */    
    free( p_vout->pi_trans16_red - 384 );
    free( p_vout->pi_trans16_green - 384 );
    free( p_vout->pi_trans16_blue - 384 );
Vincent Seguin's avatar
Vincent Seguin committed
734
    
Michel Kaempf's avatar
Michel Kaempf committed
735
    /* Destroy thread structures allocated by InitThread */
Vincent Seguin's avatar
Vincent Seguin committed
736 737
    vout_SysEnd( p_vout );
    vout_SysDestroy( p_vout );            /* destroy output method */
Michel Kaempf's avatar
Michel Kaempf committed
738 739 740 741 742 743 744 745 746 747 748 749 750
    free( p_vout );

    /* Update status */
    *pi_status = THREAD_OVER;    
    intf_DbgMsg("%p\n", p_vout);
}

/*******************************************************************************
 * RenderPicture: render a picture
 *******************************************************************************
 * This function convert a picture from a video heap to a pixel-encoded image
 * and copy it to the current rendering buffer. No lock is required, since the
 * rendered picture has been determined as existant, and will only be destroyed
Vincent Seguin's avatar
Vincent Seguin committed
751
 * by the vout thread later.
Michel Kaempf's avatar
Michel Kaempf committed
752 753 754
 *******************************************************************************/
static void RenderPicture( vout_thread_t *p_vout, picture_t *p_pic )
{
755 756 757 758 759 760 761 762 763 764
    switch( p_pic->i_type )
    {
    case YUV_420_PICTURE:                   /* YUV picture: YUV transformation */        
    case YUV_422_PICTURE:
    case YUV_444_PICTURE:
        RenderYUVPicture( p_vout, p_pic );        
        break;        
    }    
        
    intf_DbgMsg("%p Picture %p type=%d, %dx%d\n", 
765 766
                p_vout, p_pic, p_pic->i_type, p_pic->i_width, p_pic->i_height );
    
Vincent Seguin's avatar
Vincent Seguin committed
767
    /*???*/
Michel Kaempf's avatar
Michel Kaempf committed
768 769
}

770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898
/*******************************************************************************
 * RenderYUVPicture: render a YUV picture
 *******************************************************************************
 * Performs the YUV convertion.
 *******************************************************************************/
static void RenderYUVPicture( vout_thread_t *p_vout, picture_t *p_pic )
{
    int         i_crv;    
    int         i_cbu;
    int         i_cgu;
    int         i_cgv;    
    int         i_pic_x;                            /* x coordinate in picture */
    int         i_pic_y;                            /* y coordinate in picture */
    yuv_data_t *p_y;                                     /* Y data base adress */
    yuv_data_t *p_u;                                     /* U data base adress */
    yuv_data_t *p_v;                                     /* V data base adress */
    yuv_data_t  i_y;                                               /* Y sample */
    yuv_data_t  i_u;                                               /* U sample */
    yuv_data_t  i_v;                                               /* V sample */
    u16        *pi_pic16;               /* base adress for destination picture */
    u32        *pi_pic32;               /* base adress for destination picture */
    int         i_pic_eol_offset;                        /* end of line offset */    
    
    /* Choose transformation matrix coefficients */
    i_crv = matrix_coefficients_table[p_pic->i_matrix_coefficients][0];
    i_cbu = matrix_coefficients_table[p_pic->i_matrix_coefficients][1];
    i_cgu = matrix_coefficients_table[p_pic->i_matrix_coefficients][2];
    i_cgv = matrix_coefficients_table[p_pic->i_matrix_coefficients][3];

    /* Set the base pointers */
    p_y = p_pic->p_y;
    p_u = p_pic->p_u;
    p_v = p_pic->p_v;
    
    /* Get base adress for destination image */
    pi_pic32 = (u32 *)pi_pic16 = 
        (u16 *)vout_SysGetPicture( p_vout, &i_pic_eol_offset );

    //?? copy used values (translation, height, width) to local variables ?

    /* Do YUV transformation - the loops are repeated for optimization */
    switch( p_vout->i_screen_depth )
    {
    case 15:
    case 16:
        switch( p_pic->i_type )
        {
          case YUV_420_PICTURE:             /* 15 or 16 bpp 420 transformation */
//#ifdef HAVE_MMX
            // ?? MMX
//#else
            YUV_TRANSFORM( 420,
                           p_vout->pi_trans16_red, 
                           p_vout->pi_trans16_green, 
                           p_vout->pi_trans16_blue,
                           pi_pic16 );            
//#endif
            break;
          case YUV_422_PICTURE:             /* 15 or 16 bpp 422 transformation */
            YUV_TRANSFORM( 422,
                           p_vout->pi_trans16_red, 
                           p_vout->pi_trans16_green, 
                           p_vout->pi_trans16_blue,
                           pi_pic16 );            
           break;
          case YUV_444_PICTURE:             /* 15 or 16 bpp 444 transformation */
            YUV_TRANSFORM( 444,
                           p_vout->pi_trans16_red, 
                           p_vout->pi_trans16_green, 
                           p_vout->pi_trans16_blue,
                           pi_pic16 );            
            break;                
        }
        break;        
    case 24: // ?? probably wrong !
       switch( p_pic->i_type )
        {
          case YUV_420_PICTURE:                   /* 24 bpp 420 transformation */
            YUV_TRANSFORM( 420,  
                           p_vout->pi_trans32_red, 
                           p_vout->pi_trans32_green, 
                           p_vout->pi_trans32_blue,
                           pi_pic32 );
            break;
          case YUV_422_PICTURE:                   /* 24 bpp 422 transformation */
            YUV_TRANSFORM( 422,
                           p_vout->pi_trans32_red, 
                           p_vout->pi_trans32_green, 
                           p_vout->pi_trans32_blue,
                           pi_pic32 );
            break;
          case YUV_444_PICTURE:                   /* 24 bpp 444 transformation */
            YUV_TRANSFORM( 444,
                           p_vout->pi_trans32_red, 
                           p_vout->pi_trans32_green, 
                           p_vout->pi_trans32_blue,
                           pi_pic32 );
            break;                
        }
        break;        
    case 32:
        switch( p_pic->i_type )
        {
          case YUV_420_PICTURE:                   /* 32 bpp 420 transformation */
            YUV_TRANSFORM( 420,
                           p_vout->pi_trans32_red, 
                           p_vout->pi_trans32_green, 
                           p_vout->pi_trans32_blue,
                           pi_pic32 );            
            break;
          case YUV_422_PICTURE:                   /* 32 bpp 422 transformation */
            YUV_TRANSFORM( 422,
                           p_vout->pi_trans32_red, 
                           p_vout->pi_trans32_green, 
                           p_vout->pi_trans32_blue,
                           pi_pic32 );
            break;
          case YUV_444_PICTURE:                   /* 32 bpp 444 transformation */
            YUV_TRANSFORM( 444,
                           p_vout->pi_trans32_red, 
                           p_vout->pi_trans32_green, 
                           p_vout->pi_trans32_blue,
                           pi_pic32 );
           break;                
        }
        break;
    }                
}