video_output.c 38.3 KB
Newer Older
1
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
2 3 4
 * video_output.c : video output thread
 * This module describes the programming interface for video output threads.
 * It includes functions allowing to open a new thread, send pictures to a
5 6
 * thread, and destroy a previously oppened video output thread.
 *****************************************************************************
7
 * Copyright (C) 2000-2001 VideoLAN
Gildas Bazin's avatar
 
Gildas Bazin committed
8
 * $Id: video_output.c,v 1.208 2003/01/28 12:30:44 gbazin Exp $
9
 *
Sam Hocevar's avatar
 
Sam Hocevar committed
10
 * Authors: Vincent Seguin <seguin@via.ecp.fr>
11 12 13 14 15
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
Sam Hocevar's avatar
Sam Hocevar committed
16
 *
17 18
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 20
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
21
 *
22 23 24
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
25
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
26

27
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
28
 * Preamble
29
 *****************************************************************************/
30
#include <stdlib.h>                                                /* free() */
Vincent Seguin's avatar
Vincent Seguin committed
31

32
#include <vlc/vlc.h>
Sam Hocevar's avatar
 
Sam Hocevar committed
33

34 35
#ifdef HAVE_SYS_TIMES_H
#   include <sys/times.h>
36
#endif
37

Michel Kaempf's avatar
Michel Kaempf committed
38 39
#include "video.h"
#include "video_output.h"
40

41 42 43 44
#if defined( SYS_DARWIN )
#include "darwin_specific.h"
#endif

45
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
46
 * Local prototypes
47
 *****************************************************************************/
48 49 50 51 52
static int      InitThread        ( vout_thread_t * );
static void     RunThread         ( vout_thread_t * );
static void     ErrorThread       ( vout_thread_t * );
static void     EndThread         ( vout_thread_t * );
static void     DestroyThread     ( vout_thread_t * );
Sam Hocevar's avatar
 
Sam Hocevar committed
53

Sam Hocevar's avatar
 
Sam Hocevar committed
54
static int      ReduceHeight      ( int );
55 56
static int      BinaryLog         ( uint32_t );
static void     MaskToShift       ( int *, int *, uint32_t );
Gildas Bazin's avatar
 
Gildas Bazin committed
57
static void     InitWindowSize    ( vout_thread_t *, int *, int * );
Michel Kaempf's avatar
Michel Kaempf committed
58

59
/*****************************************************************************
60 61 62 63 64 65 66 67 68 69 70 71 72 73
 * vout_Request: find a video output thread, create one, or destroy one.
 *****************************************************************************
 * This function looks for a video output thread matching the current
 * properties. If not found, it spawns a new one.
 *****************************************************************************/
vout_thread_t * __vout_Request ( vlc_object_t *p_this, vout_thread_t *p_vout,
                                 unsigned int i_width, unsigned int i_height,
                                 vlc_fourcc_t i_chroma, unsigned int i_aspect )
{
    if( !i_width || !i_height || !i_chroma )
    {
        /* Reattach video output to p_vlc before bailing out */
        if( p_vout )
        {
74 75 76 77 78 79 80 81 82 83
            char *psz_sout = config_GetPsz( p_this, "sout" );

            if( !psz_sout || !*psz_sout )
            {
                vlc_object_detach( p_vout );
                vlc_object_attach( p_vout, p_this->p_vlc );
            }
            else
            {
                vlc_object_detach( p_vout );
Gildas Bazin's avatar
 
Gildas Bazin committed
84
                vlc_object_release( p_vout );
85 86 87
                vout_Destroy( p_vout );
            }
            if( psz_sout ) free( psz_sout );
88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110
        }

        return NULL;
    }

    /* If a video output was provided, lock it, otherwise look for one. */
    if( p_vout )
    {
        vlc_object_yield( p_vout );
    }
    else
    {
        p_vout = vlc_object_find( p_this, VLC_OBJECT_VOUT, FIND_CHILD );

        if( !p_vout )
        {
            p_vout = vlc_object_find( p_this, VLC_OBJECT_VOUT, FIND_ANYWHERE );
        }
    }

    /* If we now have a video output, check it has the right properties */
    if( p_vout )
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138
        char *psz_filter_chain;

        /* We don't directly check for the "filter" variable for obvious
         * performance reasons. */
        if( p_vout->b_filter_change )
        {
            psz_filter_chain = config_GetPsz( p_this, "filter" );

            if( psz_filter_chain && !*psz_filter_chain )
            {
                free( psz_filter_chain );
                psz_filter_chain = NULL;
            }
            if( p_vout->psz_filter_chain && !*p_vout->psz_filter_chain )
            {
                free( p_vout->psz_filter_chain );
                p_vout->psz_filter_chain = NULL;
            }

            if( ( !psz_filter_chain && !p_vout->psz_filter_chain ) ||
                ( psz_filter_chain && p_vout->psz_filter_chain &&
                  !strcmp( psz_filter_chain, p_vout->psz_filter_chain ) ) )
            {
                p_vout->b_filter_change = VLC_FALSE;
            }

        }

139 140
        if( ( p_vout->render.i_width != i_width ) ||
            ( p_vout->render.i_height != i_height ) ||
Gildas Bazin's avatar
 
Gildas Bazin committed
141
            ( p_vout->render.i_chroma != i_chroma ) ||
Gildas Bazin's avatar
 
Gildas Bazin committed
142 143
            ( p_vout->render.i_aspect != i_aspect ) ||
            p_vout->b_filter_change )
144 145 146 147 148 149 150 151 152 153 154 155 156 157
        {
            /* We are not interested in this format, close this vout */
            vlc_object_detach( p_vout );
            vlc_object_release( p_vout );
            vout_Destroy( p_vout );
            p_vout = NULL;
        }
        else
        {
            /* This video output is cool! Hijack it. */
            vlc_object_detach( p_vout );
            vlc_object_attach( p_vout, p_this );
            vlc_object_release( p_vout );
        }
Gildas Bazin's avatar
 
Gildas Bazin committed
158 159

        if( psz_filter_chain ) free( psz_filter_chain );
160 161 162 163 164 165 166 167 168 169 170 171 172 173
    }

    if( !p_vout )
    {
        msg_Dbg( p_this, "no usable vout present, spawning one" );

        p_vout = vout_Create( p_this, i_width, i_height, i_chroma, i_aspect );
    }

    return p_vout;
}

/*****************************************************************************
 * vout_Create: creates a new video output thread
174
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
175 176
 * This function creates a new video output thread, and returns a pointer
 * to its description. On error, it returns NULL.
177
 *****************************************************************************/
178 179 180
vout_thread_t * __vout_Create( vlc_object_t *p_parent,
                               unsigned int i_width, unsigned int i_height,
                               vlc_fourcc_t i_chroma, unsigned int i_aspect )
Michel Kaempf's avatar
Michel Kaempf committed
181
{
182
    vout_thread_t * p_vout;                             /* thread descriptor */
Sam Hocevar's avatar
 
Sam Hocevar committed
183
    int             i_index;                                /* loop variable */
Sam Hocevar's avatar
 
Sam Hocevar committed
184
    char          * psz_plugin;
185
    vlc_value_t     val;
Michel Kaempf's avatar
Michel Kaempf committed
186

187
    /* Allocate descriptor */
188
    p_vout = vlc_object_create( p_parent, VLC_OBJECT_VOUT );
189
    if( p_vout == NULL )
Michel Kaempf's avatar
Michel Kaempf committed
190
    {
191
        msg_Err( p_parent, "out of memory" );
192
        return NULL;
Michel Kaempf's avatar
Michel Kaempf committed
193
    }
194

195 196 197 198
    var_Create( p_vout, "intf-change", VLC_VAR_BOOL );
    val.b_bool = VLC_TRUE;
    var_Set( p_vout, "intf-change", val );

Gildas Bazin's avatar
 
Gildas Bazin committed
199 200 201
    /* If the parent is not a VOUT object, that means we are at the start of
     * the video output pipe */
    if( p_parent->i_object_type != VLC_OBJECT_VOUT )
Sam Hocevar's avatar
 
Sam Hocevar committed
202
    {
203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237
        char *psz_aspect = config_GetPsz( p_parent, "aspect-ratio" );

        /* Check whether the user tried to override aspect ratio */
        if( psz_aspect )
        {
            unsigned int i_new_aspect = i_aspect;
            char *psz_parser = strchr( psz_aspect, ':' );

            if( psz_parser )
            {
                *psz_parser++ = '\0';
                i_new_aspect = atoi( psz_aspect ) * VOUT_ASPECT_FACTOR
                                                  / atoi( psz_parser );
            }
            else
            {
                i_new_aspect = i_width * VOUT_ASPECT_FACTOR
                                       * atof( psz_aspect )
                                       / i_height;
            }

            free( psz_aspect );

            if( i_new_aspect && i_new_aspect != i_aspect )
            {
                int i_pgcd = ReduceHeight( i_new_aspect );

                msg_Dbg( p_vout, "overriding source aspect ratio to %i:%i",
                         i_new_aspect / i_pgcd, VOUT_ASPECT_FACTOR / i_pgcd );

                i_aspect = i_new_aspect;
            }
        }

        /* Look for the default filter configuration */
Gildas Bazin's avatar
 
Gildas Bazin committed
238 239 240 241 242 243 244 245 246 247 248 249 250 251
        p_vout->psz_filter_chain = config_GetPsz( p_parent, "filter" );
    }
    else
    {
        /* continue the parent's filter chain */
        char *psz_end;

        psz_end = strchr( ((vout_thread_t *)p_parent)->psz_filter_chain, ':' );
        if( psz_end && *(psz_end+1) )
            p_vout->psz_filter_chain = strdup( psz_end+1 );
        else p_vout->psz_filter_chain = NULL;
    }

    /* Choose the video output module */
Gildas Bazin's avatar
 
Gildas Bazin committed
252
    if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
Gildas Bazin's avatar
 
Gildas Bazin committed
253 254 255 256 257 258 259 260 261 262 263 264 265 266
    {
        psz_plugin = config_GetPsz( p_parent, "vout" );
    }
    else
    {
        /* the filter chain is a string list of filters separated by double
         * colons */
        char *psz_end;

        psz_end = strchr( p_vout->psz_filter_chain, ':' );
        if( psz_end )
            psz_plugin = strndup( p_vout->psz_filter_chain,
                                  psz_end - p_vout->psz_filter_chain );
        else psz_plugin = strdup( p_vout->psz_filter_chain );
Sam Hocevar's avatar
 
Sam Hocevar committed
267 268
    }

269
    /* Initialize pictures and subpictures - translation tables and functions
270
     * will be initialized later in InitThread */
Sam Hocevar's avatar
 
Sam Hocevar committed
271
    for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES; i_index++)
272
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
273
        p_vout->p_picture[i_index].i_status = FREE_PICTURE;
Sam Hocevar's avatar
 
Sam Hocevar committed
274
        p_vout->p_picture[i_index].i_type   = EMPTY_PICTURE;
275
    }
Sam Hocevar's avatar
 
Sam Hocevar committed
276

277 278
    for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++)
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
279
        p_vout->p_subpicture[i_index].i_status = FREE_SUBPICTURE;
Sam Hocevar's avatar
 
Sam Hocevar committed
280
        p_vout->p_subpicture[i_index].i_type   = EMPTY_SUBPICTURE;
281
    }
Sam Hocevar's avatar
 
Sam Hocevar committed
282

Sam Hocevar's avatar
 
Sam Hocevar committed
283
    /* No images in the heap */
Sam Hocevar's avatar
 
Sam Hocevar committed
284 285
    p_vout->i_heap_size = 0;

Sam Hocevar's avatar
 
Sam Hocevar committed
286
    /* Initialize the rendering heap */
Sam Hocevar's avatar
 
Sam Hocevar committed
287 288 289 290 291
    I_RENDERPICTURES = 0;
    p_vout->render.i_width    = i_width;
    p_vout->render.i_height   = i_height;
    p_vout->render.i_chroma   = i_chroma;
    p_vout->render.i_aspect   = i_aspect;
Sam Hocevar's avatar
 
Sam Hocevar committed
292

Sam Hocevar's avatar
 
Sam Hocevar committed
293 294 295 296
    p_vout->render.i_rmask    = 0;
    p_vout->render.i_gmask    = 0;
    p_vout->render.i_bmask    = 0;

Gildas Bazin's avatar
 
Gildas Bazin committed
297
    p_vout->render.i_last_used_pic = -1;
Gildas Bazin's avatar
 
Gildas Bazin committed
298 299
    p_vout->render.b_allow_modify_pics = 1;

Sam Hocevar's avatar
 
Sam Hocevar committed
300 301 302 303 304 305 306 307 308 309 310
    /* Zero the output heap */
    I_OUTPUTPICTURES = 0;
    p_vout->output.i_width    = 0;
    p_vout->output.i_height   = 0;
    p_vout->output.i_chroma   = 0;
    p_vout->output.i_aspect   = 0;

    p_vout->output.i_rmask    = 0;
    p_vout->output.i_gmask    = 0;
    p_vout->output.i_bmask    = 0;

Sam Hocevar's avatar
 
Sam Hocevar committed
311
    /* Initialize misc stuff */
Sam Hocevar's avatar
 
Sam Hocevar committed
312 313 314 315 316 317
    p_vout->i_changes    = 0;
    p_vout->f_gamma      = 0;
    p_vout->b_grayscale  = 0;
    p_vout->b_info       = 0;
    p_vout->b_interface  = 0;
    p_vout->b_scale      = 1;
Gildas Bazin's avatar
 
Gildas Bazin committed
318
    p_vout->b_fullscreen = 0;
Sam Hocevar's avatar
 
Sam Hocevar committed
319
    p_vout->render_time  = 10;
Gildas Bazin's avatar
 
Gildas Bazin committed
320
    p_vout->c_fps_samples= 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
321
    p_vout->b_filter_change = 0;
322

323 324 325 326 327
    /* Mouse coordinates */
    var_Create( p_vout, "mouse-x", VLC_VAR_INTEGER );
    var_Create( p_vout, "mouse-y", VLC_VAR_INTEGER );
    var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
    var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );
328
    var_Create( p_vout, "key-pressed", VLC_VAR_STRING );
329

Gildas Bazin's avatar
 
Gildas Bazin committed
330
    /* user requested fullscreen? */
331 332
    if( config_GetInt( p_vout, "fullscreen" ) )
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
333
        p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
334
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
335

Gildas Bazin's avatar
 
Gildas Bazin committed
336 337 338 339 340
    /* Initialize the dimensions of the video window */
    InitWindowSize( p_vout, &p_vout->i_window_width,
                    &p_vout->i_window_height );


Gildas Bazin's avatar
 
Gildas Bazin committed
341
    p_vout->p_module = module_Need( p_vout,
Gildas Bazin's avatar
 
Gildas Bazin committed
342 343
                           ( p_vout->psz_filter_chain &&
                               *p_vout->psz_filter_chain ) ?
344 345
                           "video filter" : "video output",
                           psz_plugin );
Sam Hocevar's avatar
 
Sam Hocevar committed
346

Gildas Bazin's avatar
 
Gildas Bazin committed
347
    if( psz_plugin ) free( psz_plugin );
Sam Hocevar's avatar
 
Sam Hocevar committed
348 349
    if( p_vout->p_module == NULL )
    {
350 351
        msg_Err( p_vout, "no suitable vout module" );
        vlc_object_destroy( p_vout );
352
        return NULL;
Sam Hocevar's avatar
 
Sam Hocevar committed
353 354
    }

Michel Kaempf's avatar
Michel Kaempf committed
355
    /* Create thread and set locks */
356 357 358
    vlc_mutex_init( p_vout, &p_vout->picture_lock );
    vlc_mutex_init( p_vout, &p_vout->subpicture_lock );
    vlc_mutex_init( p_vout, &p_vout->change_lock );
359

360 361
    vlc_object_attach( p_vout, p_parent );

362 363
    if( vlc_thread_create( p_vout, "video output", RunThread,
                           VLC_THREAD_PRIORITY_OUTPUT, VLC_FALSE ) )
Michel Kaempf's avatar
Michel Kaempf committed
364
    {
365
        msg_Err( p_vout, "out of memory" );
366
        module_Unneed( p_vout, p_vout->p_module );
367 368
        vlc_object_destroy( p_vout );
        return NULL;
369
    }
Michel Kaempf's avatar
Michel Kaempf committed
370

371
    return p_vout;
Michel Kaempf's avatar
Michel Kaempf committed
372 373
}

374
/*****************************************************************************
375
 * vout_Destroy: destroys a previously created video output
376 377
 *****************************************************************************
 * Destroy a terminated thread.
Michel Kaempf's avatar
Michel Kaempf committed
378
 * The function will request a destruction of the specified thread. If pi_error
379
 * is NULL, it will return once the thread is destroyed. Else, it will be
Michel Kaempf's avatar
Michel Kaempf committed
380
 * update using one of the THREAD_* constants.
381
 *****************************************************************************/
382
void vout_Destroy( vout_thread_t *p_vout )
383
{
Michel Kaempf's avatar
Michel Kaempf committed
384
    /* Request thread destruction */
385
    p_vout->b_die = VLC_TRUE;
386
    vlc_thread_join( p_vout );
Michel Kaempf's avatar
Michel Kaempf committed
387

388 389
    var_Destroy( p_vout, "intf-change" );

390
    /* Free structure */
391
    vlc_object_destroy( p_vout );
Michel Kaempf's avatar
Michel Kaempf committed
392 393
}

394
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
395
 * InitThread: initialize video output thread
396
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
397 398 399
 * 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.
400
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
401
static int InitThread( vout_thread_t *p_vout )
Vincent Seguin's avatar
Vincent Seguin committed
402
{
Sam Hocevar's avatar
 
Sam Hocevar committed
403
    int i, i_pgcd;
Sam Hocevar's avatar
 
Sam Hocevar committed
404

Sam Hocevar's avatar
 
Sam Hocevar committed
405 406 407 408
    vlc_mutex_lock( &p_vout->change_lock );

#ifdef STATS
    p_vout->c_loops = 0;
Vincent Seguin's avatar
Vincent Seguin committed
409 410
#endif

Sam Hocevar's avatar
 
Sam Hocevar committed
411
    /* Initialize output method, it allocates direct buffers for us */
Sam Hocevar's avatar
 
Sam Hocevar committed
412
    if( p_vout->pf_init( p_vout ) )
Vincent Seguin's avatar
Vincent Seguin committed
413
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
414
        vlc_mutex_unlock( &p_vout->change_lock );
415
        return VLC_EGENERIC;
Sam Hocevar's avatar
 
Sam Hocevar committed
416 417
    }

Sam Hocevar's avatar
 
Sam Hocevar committed
418
    if( !I_OUTPUTPICTURES )
Sam Hocevar's avatar
 
Sam Hocevar committed
419
    {
420 421
        msg_Err( p_vout, "plugin was unable to allocate at least "
                         "one direct buffer" );
Sam Hocevar's avatar
 
Sam Hocevar committed
422
        p_vout->pf_end( p_vout );
Sam Hocevar's avatar
 
Sam Hocevar committed
423
        vlc_mutex_unlock( &p_vout->change_lock );
424
        return VLC_EGENERIC;
425
    }
Vincent Seguin's avatar
Vincent Seguin committed
426

Gildas Bazin's avatar
 
Gildas Bazin committed
427 428 429 430 431 432 433 434 435
    if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
    {
        msg_Err( p_vout, "plugin allocated too many direct buffers, "
                         "our internal buffers must have overflown." );
        p_vout->pf_end( p_vout );
        vlc_mutex_unlock( &p_vout->change_lock );
        return VLC_EGENERIC;
    }

436
    msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
Sam Hocevar's avatar
 
Sam Hocevar committed
437

438
#if 0
439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458
    if( !p_vout->psz_filter_chain )
    {
        char *psz_aspect = config_GetPsz( p_vout, "pixel-ratio" );

        if( psz_aspect )
        {
            int i_new_aspect = p_vout->output.i_width * VOUT_ASPECT_FACTOR
                                                      * atof( psz_aspect )
                                                      / p_vout->output.i_height;
            free( psz_aspect );

            if( i_new_aspect && i_new_aspect != p_vout->output.i_aspect )
            {
                int i_pgcd = ReduceHeight( i_new_aspect );
                msg_Dbg( p_vout, "output ratio forced to %i:%i\n",
                         i_new_aspect / i_pgcd, VOUT_ASPECT_FACTOR / i_pgcd );
                p_vout->output.i_aspect = i_new_aspect;
            }
        }
    }
459
#endif
460

Sam Hocevar's avatar
 
Sam Hocevar committed
461
    i_pgcd = ReduceHeight( p_vout->render.i_aspect );
462 463 464 465 466
    msg_Dbg( p_vout,
             "picture in %ix%i, chroma 0x%.8x (%4.4s), aspect ratio %i:%i",
             p_vout->render.i_width, p_vout->render.i_height,
             p_vout->render.i_chroma, (char*)&p_vout->render.i_chroma,
             p_vout->render.i_aspect / i_pgcd, VOUT_ASPECT_FACTOR / i_pgcd );
Sam Hocevar's avatar
 
Sam Hocevar committed
467 468

    i_pgcd = ReduceHeight( p_vout->output.i_aspect );
469 470 471 472 473
    msg_Dbg( p_vout,
             "picture out %ix%i, chroma 0x%.8x (%4.4s), aspect ratio %i:%i",
             p_vout->output.i_width, p_vout->output.i_height,
             p_vout->output.i_chroma, (char*)&p_vout->output.i_chroma,
             p_vout->output.i_aspect / i_pgcd, VOUT_ASPECT_FACTOR / i_pgcd );
Sam Hocevar's avatar
 
Sam Hocevar committed
474

Sam Hocevar's avatar
 
Sam Hocevar committed
475 476 477 478 479 480 481 482
    /* Calculate shifts from system-updated masks */
    MaskToShift( &p_vout->output.i_lrshift, &p_vout->output.i_rrshift,
                 p_vout->output.i_rmask );
    MaskToShift( &p_vout->output.i_lgshift, &p_vout->output.i_rgshift,
                 p_vout->output.i_gmask );
    MaskToShift( &p_vout->output.i_lbshift, &p_vout->output.i_rbshift,
                 p_vout->output.i_bmask );

Sam Hocevar's avatar
 
Sam Hocevar committed
483
    /* Check whether we managed to create direct buffers similar to
484
     * the render buffers, ie same size and chroma */
Sam Hocevar's avatar
 
Sam Hocevar committed
485 486
    if( ( p_vout->output.i_width == p_vout->render.i_width )
     && ( p_vout->output.i_height == p_vout->render.i_height )
487
     && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
Sam Hocevar's avatar
 
Sam Hocevar committed
488
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
489 490 491 492
        /* Cool ! We have direct buffers, we can ask the decoder to
         * directly decode into them ! Map the first render buffers to
         * the first direct buffers, but keep the first direct buffer
         * for memcpy operations */
Sam Hocevar's avatar
 
Sam Hocevar committed
493 494
        p_vout->b_direct = 1;

Sam Hocevar's avatar
 
Sam Hocevar committed
495 496
        for( i = 1; i < VOUT_MAX_PICTURES; i++ )
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
497 498 499 500 501 502 503 504
            if( p_vout->p_picture[ i ].i_type != DIRECT_PICTURE &&
                I_RENDERPICTURES >= VOUT_MIN_DIRECT_PICTURES - 1 &&
                p_vout->p_picture[ i - 1 ].i_type == DIRECT_PICTURE )
            {
                /* We have enough direct buffers so there's no need to
                 * try to use system memory buffers. */
                break;
            }
Sam Hocevar's avatar
 
Sam Hocevar committed
505 506 507
            PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
            I_RENDERPICTURES++;
        }
Gildas Bazin's avatar
 
Gildas Bazin committed
508 509 510 511

        msg_Dbg( p_vout, "direct render, mapping "
                 "render pictures 0-%i to system pictures 1-%i",
                 VOUT_MAX_PICTURES - 2, VOUT_MAX_PICTURES - 1 );
Sam Hocevar's avatar
 
Sam Hocevar committed
512 513 514
    }
    else
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
515 516 517
        /* Rats... Something is wrong here, we could not find an output
         * plugin able to directly render what we decode. See if we can
         * find a chroma plugin to do the conversion */
Sam Hocevar's avatar
 
Sam Hocevar committed
518 519
        p_vout->b_direct = 0;

Sam Hocevar's avatar
 
Sam Hocevar committed
520
        /* Choose the best module */
521
        p_vout->chroma.p_module = module_Need( p_vout, "chroma", NULL );
Sam Hocevar's avatar
 
Sam Hocevar committed
522

Sam Hocevar's avatar
 
Sam Hocevar committed
523 524
        if( p_vout->chroma.p_module == NULL )
        {
525
            msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
526 527
                     (char*)&p_vout->render.i_chroma,
                     (char*)&p_vout->output.i_chroma );
Sam Hocevar's avatar
 
Sam Hocevar committed
528 529
            p_vout->pf_end( p_vout );
            vlc_mutex_unlock( &p_vout->change_lock );
530
            return VLC_EGENERIC;
Sam Hocevar's avatar
 
Sam Hocevar committed
531
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
532

Gildas Bazin's avatar
 
Gildas Bazin committed
533 534 535 536
        msg_Dbg( p_vout, "indirect render, mapping "
                 "render pictures 0-%i to system pictures %i-%i",
                 VOUT_MAX_PICTURES - 1, I_OUTPUTPICTURES,
                 I_OUTPUTPICTURES + VOUT_MAX_PICTURES - 1 );
Sam Hocevar's avatar
 
Sam Hocevar committed
537 538

        /* Append render buffers after the direct buffers */
Sam Hocevar's avatar
 
Sam Hocevar committed
539
        for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
Sam Hocevar's avatar
 
Sam Hocevar committed
540 541 542
        {
            PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
            I_RENDERPICTURES++;
Gildas Bazin's avatar
 
Gildas Bazin committed
543 544 545 546

            /* Check if we have enough render pictures */
            if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
                break;
Sam Hocevar's avatar
 
Sam Hocevar committed
547 548
        }
    }
Vincent Seguin's avatar
Vincent Seguin committed
549

Sam Hocevar's avatar
 
Sam Hocevar committed
550 551 552 553 554 555 556 557 558 559 560
    /* Link pictures back to their heap */
    for( i = 0 ; i < I_RENDERPICTURES ; i++ )
    {
        PP_RENDERPICTURE[ i ]->p_heap = &p_vout->render;
    }

    for( i = 0 ; i < I_OUTPUTPICTURES ; i++ )
    {
        PP_OUTPUTPICTURE[ i ]->p_heap = &p_vout->output;
    }

561
/* XXX XXX mark thread ready */
562
    return VLC_SUCCESS;
Vincent Seguin's avatar
Vincent Seguin committed
563 564
}

565
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
566
 * RunThread: video output thread
567
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
568 569 570
 * 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.
571
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
572
static void RunThread( vout_thread_t *p_vout)
Vincent Seguin's avatar
Vincent Seguin committed
573
{
Sam Hocevar's avatar
 
Sam Hocevar committed
574
    int             i_index;                                /* index in heap */
575
    int             i_idle_loops = 0;  /* loops without displaying a picture */
Sam Hocevar's avatar
 
Sam Hocevar committed
576 577 578 579
    mtime_t         current_date;                            /* current date */
    mtime_t         display_date;                            /* display date */

    picture_t *     p_picture;                            /* picture pointer */
580
    picture_t *     p_last_picture = NULL;                   /* last picture */
Sam Hocevar's avatar
 
Sam Hocevar committed
581 582 583 584 585 586 587 588 589 590 591
    picture_t *     p_directbuffer;              /* direct buffer to display */

    subpicture_t *  p_subpic;                          /* subpicture pointer */

    /*
     * Initialize thread
     */
    p_vout->b_error = InitThread( p_vout );
    if( p_vout->b_error )
    {
        /* Destroy thread structures allocated by Create and InitThread */
592
        DestroyThread( p_vout );
Sam Hocevar's avatar
 
Sam Hocevar committed
593 594
        return;
    }
595

596
    /*
Sam Hocevar's avatar
 
Sam Hocevar committed
597 598
     * Main loop - it is not executed if an error occured during
     * initialization
599
     */
Sam Hocevar's avatar
 
Sam Hocevar committed
600
    while( (!p_vout->b_die) && (!p_vout->b_error) )
601
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
602
        /* Initialize loop variables */
603
        p_picture = NULL;
Sam Hocevar's avatar
 
Sam Hocevar committed
604 605
        display_date = 0;
        current_date = mdate();
Sam Hocevar's avatar
 
Sam Hocevar committed
606 607 608 609

#ifdef STATS
        p_vout->c_loops++;
        if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
610
        {
611 612
            msg_Dbg( p_vout, "picture heap: %d/%d",
                     I_RENDERPICTURES, p_vout->i_heap_size );
Sam Hocevar's avatar
 
Sam Hocevar committed
613
        }
614
#endif
Sam Hocevar's avatar
 
Sam Hocevar committed
615 616

        /*
617 618 619
         * Find the picture to display (the one with the earliest date).
         * This operation does not need lock, since only READY_PICTUREs
         * are handled. */
620
        for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
Sam Hocevar's avatar
 
Sam Hocevar committed
621
        {
Sam Hocevar's avatar
 
Sam Hocevar committed
622 623 624
            if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
                && ( (p_picture == NULL) ||
                     (PP_RENDERPICTURE[i_index]->date < display_date) ) )
625
            {
Sam Hocevar's avatar
 
Sam Hocevar committed
626
                p_picture = PP_RENDERPICTURE[i_index];
Sam Hocevar's avatar
 
Sam Hocevar committed
627
                display_date = p_picture->date;
628 629
            }
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
630

631
        if( p_picture )
632
        {
633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663
            /* If we met the last picture, parse again to see whether there is
             * a more appropriate one. */
            if( p_picture == p_last_picture )
            {
                for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
                {
                    if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
                        && (PP_RENDERPICTURE[i_index] != p_last_picture)
                        && ((p_picture == p_last_picture) ||
                            (PP_RENDERPICTURE[i_index]->date < display_date)) )
                    {
                        p_picture = PP_RENDERPICTURE[i_index];
                        display_date = p_picture->date;
                    }
                }
            }
    
            /* If we found better than the last picture, destroy it */
            if( p_last_picture && p_picture != p_last_picture )
            {
                vlc_mutex_lock( &p_vout->picture_lock );
                if( p_last_picture->i_refcount )
                {
                    p_last_picture->i_status = DISPLAYED_PICTURE;
                }
                else
                {
                    p_last_picture->i_status = DESTROYED_PICTURE;
                    p_vout->i_heap_size--;
                }
                vlc_mutex_unlock( &p_vout->picture_lock );
664
                p_last_picture = NULL;
665 666
            }

Sam Hocevar's avatar
 
Sam Hocevar committed
667 668 669 670
            /* Compute FPS rate */
            p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
                = display_date;

671
            if( !p_picture->b_force &&
672
                p_picture != p_last_picture &&
673
                display_date < current_date + p_vout->render_time )
Sam Hocevar's avatar
 
Sam Hocevar committed
674 675 676 677 678 679 680 681 682 683 684 685 686 687
            {
                /* Picture is late: it will be destroyed and the thread
                 * will directly choose the next picture */
                vlc_mutex_lock( &p_vout->picture_lock );
                if( p_picture->i_refcount )
                {
                    /* Pretend we displayed the picture, but don't destroy
                     * it since the decoder might still need it. */
                    p_picture->i_status = DISPLAYED_PICTURE;
                }
                else
                {
                    /* Destroy the picture without displaying it */
                    p_picture->i_status = DESTROYED_PICTURE;
Sam Hocevar's avatar
 
Sam Hocevar committed
688
                    p_vout->i_heap_size--;
Sam Hocevar's avatar
 
Sam Hocevar committed
689
                }
Gildas Bazin's avatar
 
Gildas Bazin committed
690
                msg_Warn( p_vout, "late picture skipped ("I64Fd")",
691
                                  current_date - display_date );
692 693 694 695
                vlc_mutex_unlock( &p_vout->picture_lock );

                continue;
            }
Christophe Massiot's avatar
Christophe Massiot committed
696 697
#if 0
            /* Removed because it causes problems for some people --Meuuh */
698
            if( display_date > current_date + VOUT_BOGUS_DELAY )
699 700 701 702 703 704 705 706 707 708 709 710 711 712 713
            {
                /* Picture is waaay too early: it will be destroyed */
                vlc_mutex_lock( &p_vout->picture_lock );
                if( p_picture->i_refcount )
                {
                    /* Pretend we displayed the picture, but don't destroy
                     * it since the decoder might still need it. */
                    p_picture->i_status = DISPLAYED_PICTURE;
                }
                else
                {
                    /* Destroy the picture without displaying it */
                    p_picture->i_status = DESTROYED_PICTURE;
                    p_vout->i_heap_size--;
                }
Gildas Bazin's avatar
 
Gildas Bazin committed
714 715
                intf_WarnMsg( 1, "vout warning: early picture skipped "
                              "("I64Fd")", display_date - current_date );
Sam Hocevar's avatar
 
Sam Hocevar committed
716 717 718 719
                vlc_mutex_unlock( &p_vout->picture_lock );

                continue;
            }
Christophe Massiot's avatar
Christophe Massiot committed
720
#endif
721
            if( display_date > current_date + VOUT_DISPLAY_DELAY )
Sam Hocevar's avatar
 
Sam Hocevar committed
722 723 724 725 726 727 728 729
            {
                /* 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_picture    = NULL;
                display_date = 0;
            }
730 731
            else if( p_picture == p_last_picture )
            {
732 733
                /* We are asked to repeat the previous picture, but we first
                 * wait for a couple of idle loops */
734 735 736 737 738 739 740
                if( i_idle_loops < 4 )
                {
                    p_picture    = NULL;
                    display_date = 0;
                }
                else
                {
741 742 743
                    /* We set the display date to something high, otherwise
                     * we'll have lots of problems with late pictures */
                    display_date = current_date + p_vout->render_time;
744 745 746 747 748 749 750
                }
            }
        }

        if( p_picture == NULL )
        {
            i_idle_loops++;
751 752
        }

Sam Hocevar's avatar
 
Sam Hocevar committed
753 754 755 756
        /*
         * Check for subpictures to display
         */
        p_subpic = vout_SortSubPictures( p_vout, display_date );
757

Sam Hocevar's avatar
 
Sam Hocevar committed
758 759 760 761 762
        /*
         * Perform rendering
         */
        p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );

Sam Hocevar's avatar
 
Sam Hocevar committed
763
        /*
764
         * Call the plugin-specific rendering method if there is one
Sam Hocevar's avatar
 
Sam Hocevar committed
765
         */
766
        if( p_picture != NULL && p_vout->pf_render )
Sam Hocevar's avatar
 
Sam Hocevar committed
767 768 769 770 771
        {
            /* Render the direct buffer returned by vout_RenderPicture */
            p_vout->pf_render( p_vout, p_directbuffer );
        }

Sam Hocevar's avatar
 
Sam Hocevar committed
772 773 774 775
        /*
         * Sleep, wake up
         */
        if( display_date != 0 )
776
        {
777
            /* Store render time using a sliding mean */
Sam Hocevar's avatar
 
Sam Hocevar committed
778 779
            p_vout->render_time += mdate() - current_date;
            p_vout->render_time >>= 1;
780 781
        }

Sam Hocevar's avatar
 
Sam Hocevar committed
782 783 784 785 786
        /* Give back change lock */
        vlc_mutex_unlock( &p_vout->change_lock );

        /* Sleep a while or until a given date */
        if( display_date != 0 )
Sam Hocevar's avatar
Sam Hocevar committed
787
        {
Sam Hocevar's avatar
 
Sam Hocevar committed
788
            mwait( display_date - VOUT_MWAIT_TOLERANCE );
789 790 791
        }
        else
        {
Sam Hocevar's avatar
 
Sam Hocevar committed
792
            msleep( VOUT_IDLE_SLEEP );
793
        }
794

Sam Hocevar's avatar
 
Sam Hocevar committed
795 796 797 798 799 800 801 802 803 804
        /* On awakening, take back lock and send immediately picture
         * to display. */
        vlc_mutex_lock( &p_vout->change_lock );

        /*
         * Display the previously rendered picture
         */
        if( p_picture != NULL )
        {
            /* Display the direct buffer returned by vout_RenderPicture */
805 806 807 808
            if( p_vout->pf_display )
            {
                p_vout->pf_display( p_vout, p_directbuffer );
            }
Vincent Seguin's avatar
Vincent Seguin committed
809

810 811 812 813 814 815 816
            /* Reinitialize idle loop count */
            i_idle_loops = 0;

            /* Tell the vout this was the last picture and that it does not
             * need to be forced anymore. */
            p_last_picture = p_picture;
            p_last_picture->b_force = 0;
Sam Hocevar's avatar
 
Sam Hocevar committed
817
        }
Vincent Seguin's avatar
Vincent Seguin committed
818

Sam Hocevar's avatar
 
Sam Hocevar committed
819 820 821
        /*
         * Check events and manage thread
         */
822
        if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
Sam Hocevar's avatar
 
Sam Hocevar committed
823
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
824 825 826
            /* A fatal error occured, and the thread must terminate
             * immediately, without displaying anything - setting b_error to 1
             * causes the immediate end of the main while() loop. */
Sam Hocevar's avatar
 
Sam Hocevar committed
827 828
            p_vout->b_error = 1;
        }
Gildas Bazin's avatar
 
Gildas Bazin committed
829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846

        if( p_vout->i_changes & VOUT_SIZE_CHANGE )
        {
            /* this must only happen when the vout plugin is incapable of
             * rescaling the picture itself. In this case we need to destroy
             * the current picture buffers and recreate new ones with the right
             * dimensions */
            int i;

            p_vout->i_changes &= ~VOUT_SIZE_CHANGE;

            p_vout->pf_end( p_vout );
            for( i = 0; i < I_OUTPUTPICTURES; i++ )
                 p_vout->p_picture[ i ].i_status = FREE_PICTURE;

            I_OUTPUTPICTURES = 0;
            if( p_vout->pf_init( p_vout ) )
            {
847
                msg_Err( p_vout, "cannot resize display" );
848
                /* FIXME: pf_end will be called again in EndThread() */
Gildas Bazin's avatar
 
Gildas Bazin committed
849 850 851 852
                p_vout->b_error = 1;
            }

            /* Need to reinitialise the chroma plugin */
853 854
            p_vout->chroma.p_module->pf_deactivate( VLC_OBJECT(p_vout) );
            p_vout->chroma.p_module->pf_activate( VLC_OBJECT(p_vout) );
Gildas Bazin's avatar
 
Gildas Bazin committed
855
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
856
    }
Vincent Seguin's avatar
Vincent Seguin committed
857

Sam Hocevar's avatar
 
Sam Hocevar committed
858 859 860 861
    /*
     * Error loop - wait until the thread destruction is requested
     */
    if( p_vout->b_error )
862
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
863
        ErrorThread( p_vout );
864
    }
Michel Kaempf's avatar
Michel Kaempf committed
865

Sam Hocevar's avatar
 
Sam Hocevar committed
866 867 868 869
    /* End of thread */
    EndThread( p_vout );

    /* Destroy thread structures allocated by CreateThread */
870
    DestroyThread( p_vout );
Michel Kaempf's avatar
Michel Kaempf committed
871 872
}

873
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
874
 * ErrorThread: RunThread() error loop
875
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
876 877 878
 * 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.
879
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
880
static void ErrorThread( vout_thread_t *p_vout )
881
{
Sam Hocevar's avatar
 
Sam Hocevar committed
882 883
    /* Wait until a `die' order */
    while( !p_vout->b_die )
884
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
885 886
        /* Sleep a while */
        msleep( VOUT_IDLE_SLEEP );
887
    }
888 889
}

890
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
891
 * EndThread: thread destruction
892
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
893 894
 * This function is called when the thread ends after a sucessful
 * initialization. It frees all ressources allocated by InitThread.
895
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
896
static void EndThread( vout_thread_t *p_vout )
Michel Kaempf's avatar
Michel Kaempf committed
897
{
Sam Hocevar's avatar
 
Sam Hocevar committed
898
    int     i_index;                                        /* index in heap */
Michel Kaempf's avatar
Michel Kaempf committed
899

Sam Hocevar's avatar
 
Sam Hocevar committed
900
#ifdef STATS
Vincent Seguin's avatar
Vincent Seguin committed
901
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
902 903
        struct tms cpu_usage;
        times( &cpu_usage );
Michel Kaempf's avatar
Michel Kaempf committed
904

905 906
        msg_Dbg( p_vout, "cpu usage (user: %d, system: %d)",
                 cpu_usage.tms_utime, cpu_usage.tms_stime );
Michel Kaempf's avatar
Michel Kaempf committed
907
    }
Sam Hocevar's avatar
 
Sam Hocevar committed
908
#endif
Michel Kaempf's avatar
Michel Kaempf committed
909

Sam Hocevar's avatar
 
Sam Hocevar committed
910 911
    if( !p_vout->b_direct )
    {
912
        module_Unneed( p_vout, p_vout->chroma.p_module );
Sam Hocevar's avatar
 
Sam Hocevar committed
913 914
    }

Sam Hocevar's avatar
 
Sam Hocevar committed
915
    /* Destroy all remaining pictures */
Sam Hocevar's avatar
 
Sam Hocevar committed
916
    for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES; i_index++ )
Vincent Seguin's avatar
Vincent Seguin committed
917
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
918
        if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
Michel Kaempf's avatar
Michel Kaempf committed
919
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
920
            free( p_vout->p_picture[i_index].p_data_orig );
Michel Kaempf's avatar
Michel Kaempf committed
921
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
922
    }
Michel Kaempf's avatar
Michel Kaempf committed
923

Sam Hocevar's avatar
 
Sam Hocevar committed
924 925 926 927
    /* Destroy all remaining subpictures */
    for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
    {
        if( p_vout->p_subpicture[i_index].i_status != FREE_SUBPICTURE )
Vincent Seguin's avatar
Vincent Seguin committed
928
        {
Sam Hocevar's avatar
 
Sam Hocevar committed
929
            free( p_vout->p_subpicture[i_index].p_sys );
Vincent Seguin's avatar
Vincent Seguin committed
930
        }
Michel Kaempf's avatar
Michel Kaempf committed
931
    }
932

Sam Hocevar's avatar
 
Sam Hocevar committed
933 934 935 936 937
    /* Destroy translation tables */
    p_vout->pf_end( p_vout );

    /* Release the change lock */
    vlc_mutex_unlock( &p_vout->change_lock );
Michel Kaempf's avatar
Michel Kaempf committed
938 939
}

940
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
941
 * DestroyThread: thread destruction
942
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
943 944
 * This function is called when the thread ends. It frees all ressources
 * allocated by CreateThread. Status is available at this stage.
945
 *****************************************************************************/
946
static void DestroyThread( vout_thread_t *p_vout )
Michel Kaempf's avatar
Michel Kaempf committed
947
{
Sam Hocevar's avatar
 
Sam Hocevar committed
948 949 950 951
    /* Destroy the locks */
    vlc_mutex_destroy( &p_vout->picture_lock );
    vlc_mutex_destroy( &p_vout->subpicture_lock );
    vlc_mutex_destroy( &p_vout->change_lock );
952

Sam Hocevar's avatar
 
Sam Hocevar committed
953
    /* Release the module */
954
    module_Unneed( p_vout, p_vout->p_module );
955 956
}

Sam Hocevar's avatar
 
Sam Hocevar committed
957 958
/* following functions are local */

Sam Hocevar's avatar
 
Sam Hocevar committed
959 960 961 962 963
static int ReduceHeight( int i_ratio )
{
    int i_dummy = VOUT_ASPECT_FACTOR;
    int i_pgcd  = 1;
 
Sam Hocevar's avatar
 
Sam Hocevar committed
964 965 966 967 968
    if( !i_ratio )
    {
        return i_pgcd;
    }

Sam Hocevar's avatar
 
Sam Hocevar committed
969 970 971 972 973 974 975 976
    /* VOUT_ASPECT_FACTOR is (2^7 * 3^3 * 5^3), we just check for 2, 3 and 5 */
    while( !(i_ratio & 1) && !(i_dummy & 1) )
    {
        i_ratio >>= 1;
        i_dummy >>= 1;
        i_pgcd  <<= 1;
    }

977
    while( !(i_ratio % 3) && !(i_dummy % 3) )
Sam Hocevar's avatar
 
Sam Hocevar committed
978 979 980 981 982 983
    {
        i_ratio /= 3;
        i_dummy /= 3;
        i_pgcd  *= 3;
    }

984
    while( !(i_ratio % 5) && !(i_dummy % 5) )
Sam Hocevar's avatar
 
Sam Hocevar committed
985 986 987 988 989 990 991 992 993
    {
        i_ratio /= 5;
        i_dummy /= 5;
        i_pgcd  *= 5;
    }

    return i_pgcd;
}

Sam Hocevar's avatar
 
Sam Hocevar committed
994 995 996 997 998 999