video_output.c 49.3 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.
 *****************************************************************************
Clément Stenac's avatar
Clément Stenac committed
7
 * Copyright (C) 2000-2004 VideoLAN
Gildas Bazin's avatar
Gildas Bazin committed
8
 * $Id$
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

38
#include "vlc_video.h"
Michel Kaempf's avatar
Michel Kaempf committed
39
#include "video_output.h"
Gildas Bazin's avatar
 
Gildas Bazin committed
40
#include <vlc/input.h>                 /* for input_thread_t and i_pts_delay */
41

42 43 44 45
#if defined( SYS_DARWIN )
#include "darwin_specific.h"
#endif

46
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
47
 * Local prototypes
48
 *****************************************************************************/
49 50 51 52 53
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
54

Sam Hocevar's avatar
 
Sam Hocevar committed
55
static int      ReduceHeight      ( int );
56 57
static int      BinaryLog         ( uint32_t );
static void     MaskToShift       ( int *, int *, uint32_t );
Gildas Bazin's avatar
 
Gildas Bazin committed
58
static void     InitWindowSize    ( vout_thread_t *, int *, int * );
Michel Kaempf's avatar
Michel Kaempf committed
59

60 61
void vout_IntfInit( vout_thread_t * );

Gildas Bazin's avatar
 
Gildas Bazin committed
62
/* Object variables callbacks */
Gildas Bazin's avatar
 
Gildas Bazin committed
63 64
static int DeinterlaceCallback( vlc_object_t *, char const *,
                                vlc_value_t, vlc_value_t, void * );
65 66
static int FilterCallback( vlc_object_t *, char const *,
                           vlc_value_t, vlc_value_t, void * );
Gildas Bazin's avatar
 
Gildas Bazin committed
67

68 69 70 71 72
/**
 * vout_AspectRatio
 *
 * Set the i_aspect_x and i_aspect_y from i_aspect.
 */
Clément Stenac's avatar
Clément Stenac committed
73 74 75 76
void vout_AspectRatio( unsigned int i_aspect,
                       /*out*/ unsigned int *i_aspect_x,
                       /*out*/ unsigned int *i_aspect_y )
{
77 78 79 80 81
  unsigned int i_pgcd = ReduceHeight( i_aspect );
  *i_aspect_x = i_aspect / i_pgcd;
  *i_aspect_y = VOUT_ASPECT_FACTOR / i_pgcd;
}

82
/*****************************************************************************
83 84 85 86 87 88 89 90 91 92 93
 * 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 )
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
94
        /* Reattach video output to input before bailing out */
95 96
        if( p_vout )
        {
97
            vlc_object_t *p_playlist;
98

99
            p_playlist = vlc_object_find( p_this,
100
                                          VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
Gildas Bazin's avatar
 
Gildas Bazin committed
101

102
            if( p_playlist )
103 104
            {
                vlc_object_detach( p_vout );
105
                vlc_object_attach( p_vout, p_playlist );
106

107
                vlc_object_release( p_playlist );
108 109 110
            }
            else
            {
Clément Stenac's avatar
Clément Stenac committed
111
                msg_Dbg( p_this, "cannot find playlist, destroying vout" );
112 113 114
                vlc_object_detach( p_vout );
                vout_Destroy( p_vout );
            }
115 116 117 118 119 120 121 122 123 124 125 126 127 128 129
        }
        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 )
        {
130
            vlc_object_t *p_playlist;
Gildas Bazin's avatar
 
Gildas Bazin committed
131

132 133 134
            p_playlist = vlc_object_find( p_this,
                                          VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
            if( p_playlist )
Gildas Bazin's avatar
 
Gildas Bazin committed
135
            {
136 137
                p_vout = vlc_object_find( p_playlist,
                                          VLC_OBJECT_VOUT, FIND_CHILD );
138
                /* only first children of p_input for unused vout */
139
                if( p_vout && p_vout->p_parent != p_playlist )
140 141 142 143
                {
                    vlc_object_release( p_vout );
                    p_vout = NULL;
                }
144
                vlc_object_release( p_playlist );
Gildas Bazin's avatar
 
Gildas Bazin committed
145
            }
146 147 148 149 150 151
        }
    }

    /* If we now have a video output, check it has the right properties */
    if( p_vout )
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177
        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;
            }

Gildas Bazin's avatar
 
Gildas Bazin committed
178
            if( psz_filter_chain ) free( psz_filter_chain );
Gildas Bazin's avatar
 
Gildas Bazin committed
179 180
        }

181 182
        if( ( p_vout->render.i_width != i_width ) ||
            ( p_vout->render.i_height != i_height ) ||
Gildas Bazin's avatar
 
Gildas Bazin committed
183
            ( p_vout->render.i_chroma != i_chroma ) ||
184 185
            ( p_vout->render.i_aspect != i_aspect
                    && !p_vout->b_override_aspect ) ||
Gildas Bazin's avatar
 
Gildas Bazin committed
186
            p_vout->b_filter_change )
187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214
        {
            /* 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 );
        }
    }

    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
215
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
216 217
 * This function creates a new video output thread, and returns a pointer
 * to its description. On error, it returns NULL.
218
 *****************************************************************************/
219 220 221
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
222
{
Gildas Bazin's avatar
 
Gildas Bazin committed
223 224 225 226
    vout_thread_t  * p_vout;                            /* thread descriptor */
    input_thread_t * p_input_thread;
    int              i_index;                               /* loop variable */
    char           * psz_plugin;
Gildas Bazin's avatar
 
Gildas Bazin committed
227
    vlc_value_t      val, text;
Michel Kaempf's avatar
Michel Kaempf committed
228

229
    /* Allocate descriptor */
230
    p_vout = vlc_object_create( p_parent, VLC_OBJECT_VOUT );
231
    if( p_vout == NULL )
Michel Kaempf's avatar
Michel Kaempf committed
232
    {
233
        msg_Err( p_parent, "out of memory" );
234
        return NULL;
Michel Kaempf's avatar
Michel Kaempf committed
235
    }
236

Gildas Bazin's avatar
 
Gildas Bazin committed
237 238
    /* Initialize pictures and subpictures - translation tables and functions
     * will be initialized later in InitThread */
239
    for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++)
Gildas Bazin's avatar
 
Gildas Bazin committed
240 241 242 243 244
    {
        p_vout->p_picture[i_index].pf_lock = NULL;
        p_vout->p_picture[i_index].pf_unlock = NULL;
        p_vout->p_picture[i_index].i_status = FREE_PICTURE;
        p_vout->p_picture[i_index].i_type   = EMPTY_PICTURE;
245
        p_vout->p_picture[i_index].b_slow   = 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
246 247 248 249 250 251 252 253 254 255 256
    }

    for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++)
    {
        p_vout->p_subpicture[i_index].i_status = FREE_SUBPICTURE;
        p_vout->p_subpicture[i_index].i_type   = EMPTY_SUBPICTURE;
    }

    /* No images in the heap */
    p_vout->i_heap_size = 0;

257 258 259 260
    /* Register the default subpicture channel */
    p_vout->p_default_channel = NULL;
    p_vout->i_channel_count = 1;

Gildas Bazin's avatar
 
Gildas Bazin committed
261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293
    /* Initialize the rendering heap */
    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;

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

    p_vout->render.i_last_used_pic = -1;
    p_vout->render.b_allow_modify_pics = 1;

    /* 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;

    /* Initialize misc stuff */
    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;
    p_vout->b_fullscreen = 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
294
    p_vout->i_alignment  = 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
295 296 297
    p_vout->render_time  = 10;
    p_vout->c_fps_samples = 0;
    p_vout->b_filter_change = 0;
298
    p_vout->pf_control = 0;
299
    p_vout->p_parent_intf = 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
300 301 302 303 304 305 306 307

    /* 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-button-down", VLC_VAR_INTEGER );
    var_Create( p_vout, "mouse-moved", VLC_VAR_BOOL );
    var_Create( p_vout, "mouse-clicked", VLC_VAR_INTEGER );

308 309 310 311
    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
312 313 314 315 316 317 318 319
    /* Initialize locks */
    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 );

    /* Attach the new object now so we can use var inheritance below */
    vlc_object_attach( p_vout, p_parent );

320 321
    /* Take care of some "interface/control" related initialisations */
    vout_IntfInit( p_vout );
Gildas Bazin's avatar
 
Gildas Bazin committed
322

323 324
    p_vout->b_override_aspect = VLC_FALSE;

Gildas Bazin's avatar
 
Gildas Bazin committed
325 326 327
    /* 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
328
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
329
        var_Get( p_vout, "aspect-ratio", &val );
330 331

        /* Check whether the user tried to override aspect ratio */
Gildas Bazin's avatar
 
Gildas Bazin committed
332
        if( val.psz_string )
333 334
        {
            unsigned int i_new_aspect = i_aspect;
Gildas Bazin's avatar
 
Gildas Bazin committed
335
            char *psz_parser = strchr( val.psz_string, ':' );
336 337 338 339

            if( psz_parser )
            {
                *psz_parser++ = '\0';
Gildas Bazin's avatar
 
Gildas Bazin committed
340 341
                i_new_aspect = atoi( val.psz_string ) * VOUT_ASPECT_FACTOR
                                                      / atoi( psz_parser );
342 343 344 345
            }
            else
            {
                i_new_aspect = i_width * VOUT_ASPECT_FACTOR
Gildas Bazin's avatar
 
Gildas Bazin committed
346
                                       * atof( val.psz_string )
347 348 349
                                       / i_height;
            }

Gildas Bazin's avatar
 
Gildas Bazin committed
350
            free( val.psz_string );
351 352 353

            if( i_new_aspect && i_new_aspect != i_aspect )
            {
Clément Stenac's avatar
Clément Stenac committed
354 355 356
                unsigned int i_aspect_x, i_aspect_y;

                vout_AspectRatio( i_new_aspect, &i_aspect_x, &i_aspect_y );
357 358

                msg_Dbg( p_vout, "overriding source aspect ratio to %i:%i",
359
                         i_aspect_x, i_aspect_y );
360

Gildas Bazin's avatar
 
Gildas Bazin committed
361
                p_vout->render.i_aspect = i_new_aspect;
362 363

                p_vout->b_override_aspect = VLC_TRUE;
364 365 366 367
            }
        }

        /* Look for the default filter configuration */
Gildas Bazin's avatar
 
Gildas Bazin committed
368 369 370
        var_Create( p_vout, "filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
        var_Get( p_vout, "filter", &val );
        p_vout->psz_filter_chain = val.psz_string;
Gildas Bazin's avatar
 
Gildas Bazin committed
371 372 373 374 375 376 377 378 379 380 381 382 383
    }
    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
384
    if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
Gildas Bazin's avatar
 
Gildas Bazin committed
385
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
386 387 388
        var_Create( p_vout, "vout", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
        var_Get( p_vout, "vout", &val );
        psz_plugin = val.psz_string;
Gildas Bazin's avatar
 
Gildas Bazin committed
389 390 391 392 393 394 395 396 397 398 399 400
    }
    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
401 402
    }

Gildas Bazin's avatar
 
Gildas Bazin committed
403 404 405 406
    /* 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
407
    /* Create the vout thread */
Gildas Bazin's avatar
 
Gildas Bazin committed
408
    p_vout->p_module = module_Need( p_vout,
Gildas Bazin's avatar
 
Gildas Bazin committed
409 410
        ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ?
        "video filter" : "video output", psz_plugin, 0 );
Sam Hocevar's avatar
 
Sam Hocevar committed
411

Gildas Bazin's avatar
 
Gildas Bazin committed
412
    if( psz_plugin ) free( psz_plugin );
Sam Hocevar's avatar
 
Sam Hocevar committed
413 414
    if( p_vout->p_module == NULL )
    {
415 416
        msg_Err( p_vout, "no suitable vout module" );
        vlc_object_destroy( p_vout );
417
        return NULL;
Sam Hocevar's avatar
 
Sam Hocevar committed
418
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
419

Gildas Bazin's avatar
 
Gildas Bazin committed
420 421
    p_vout->p_text_renderer_module =
        module_Need( p_vout, "text renderer", NULL, 0 );
422 423
    if( p_vout->p_text_renderer_module == NULL )
    {
424 425
        msg_Warn( p_vout, "no suitable text renderer module" );
        p_vout->pf_add_string = NULL;
426
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
427

Gildas Bazin's avatar
 
Gildas Bazin committed
428
    /* Create a few object variables for interface interaction */
Gildas Bazin's avatar
 
Gildas Bazin committed
429 430 431 432 433 434 435 436 437 438 439 440 441 442 443
    var_Create( p_vout, "deinterlace", VLC_VAR_STRING | VLC_VAR_HASCHOICE );
    text.psz_string = _("Deinterlace");
    var_Change( p_vout, "deinterlace", VLC_VAR_SETTEXT, &text, NULL );
    val.psz_string = ""; text.psz_string = _("Disable");
    var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
    val.psz_string = "discard"; text.psz_string = _("Discard");
    var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
    val.psz_string = "blend"; text.psz_string = _("Blend");
    var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
    val.psz_string = "mean"; text.psz_string = _("Mean");
    var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
    val.psz_string = "bob"; text.psz_string = _("Bob");
    var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
    val.psz_string = "linear"; text.psz_string = _("Linear");
    var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
Gildas Bazin's avatar
 
Gildas Bazin committed
444 445 446
    if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
    {
        var_Set( p_vout, "deinterlace", val );
Gildas Bazin's avatar
 
Gildas Bazin committed
447
        if( val.psz_string ) free( val.psz_string );
Gildas Bazin's avatar
 
Gildas Bazin committed
448
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
449 450
    var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );

451 452 453 454 455

    var_Create( p_vout, "filter", VLC_VAR_STRING );
    text.psz_string = _("Filters");
    var_Change( p_vout, "filter", VLC_VAR_SETTEXT, &text, NULL );
    var_Change( p_vout, "filter", VLC_VAR_INHERITVALUE, &val, NULL );
Gildas Bazin's avatar
 
Gildas Bazin committed
456
    if( val.psz_string )
457 458
    {
        var_Set( p_vout, "filter", val );
Gildas Bazin's avatar
 
Gildas Bazin committed
459
        free( val.psz_string );
460 461 462
    }
    var_AddCallback( p_vout, "filter", FilterCallback, NULL );

Gildas Bazin's avatar
 
Gildas Bazin committed
463 464
    /* Calculate delay created by internal caching */
    p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
Gildas Bazin's avatar
 
Gildas Bazin committed
465
                                           VLC_OBJECT_INPUT, FIND_ANYWHERE );
Gildas Bazin's avatar
 
Gildas Bazin committed
466 467
    if( p_input_thread )
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
468
        p_vout->i_pts_delay = p_input_thread->i_pts_delay;
Gildas Bazin's avatar
 
Gildas Bazin committed
469 470 471 472
        vlc_object_release( p_input_thread );
    }
    else
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
473
        p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
Gildas Bazin's avatar
 
Gildas Bazin committed
474 475
    }

476
    if( vlc_thread_create( p_vout, "video output", RunThread,
Gildas Bazin's avatar
 
Gildas Bazin committed
477
                           VLC_THREAD_PRIORITY_OUTPUT, VLC_TRUE ) )
Michel Kaempf's avatar
Michel Kaempf committed
478
    {
479
        msg_Err( p_vout, "out of memory" );
480
        module_Unneed( p_vout, p_vout->p_module );
481 482 483 484 485 486 487 488 489 490 491 492 493 494
        vlc_object_detach( p_vout );
        vlc_object_destroy( p_vout );
        return NULL;
    }

    if( p_vout->b_error )
    {
        msg_Err( p_vout, "video output creation failed" );

        /* Make sure the thread is destroyed */
        p_vout->b_die = VLC_TRUE;
        vlc_thread_join( p_vout );

        vlc_object_detach( p_vout );
495 496
        vlc_object_destroy( p_vout );
        return NULL;
497
    }
Michel Kaempf's avatar
Michel Kaempf committed
498

499
    return p_vout;
Michel Kaempf's avatar
Michel Kaempf committed
500 501
}

502
/*****************************************************************************
503
 * vout_Destroy: destroys a previously created video output
504 505
 *****************************************************************************
 * Destroy a terminated thread.
Michel Kaempf's avatar
Michel Kaempf committed
506
 * The function will request a destruction of the specified thread. If pi_error
507
 * is NULL, it will return once the thread is destroyed. Else, it will be
Michel Kaempf's avatar
Michel Kaempf committed
508
 * update using one of the THREAD_* constants.
509
 *****************************************************************************/
510
void vout_Destroy( vout_thread_t *p_vout )
Clément Stenac's avatar
Clément Stenac committed
511
{
512
    vlc_object_t *p_playlist;
Clément Stenac's avatar
Clément Stenac committed
513

Michel Kaempf's avatar
Michel Kaempf committed
514
    /* Request thread destruction */
515
    p_vout->b_die = VLC_TRUE;
516
    vlc_thread_join( p_vout );
Michel Kaempf's avatar
Michel Kaempf committed
517

518 519
    var_Destroy( p_vout, "intf-change" );

Clément Stenac's avatar
Clément Stenac committed
520
    p_playlist = vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
521 522
                                  FIND_ANYWHERE );

Gildas Bazin's avatar
 
Gildas Bazin committed
523 524
    if( p_vout->psz_filter_chain ) free( p_vout->psz_filter_chain );

525
    /* Free structure */
526
    vlc_object_destroy( p_vout );
527 528 529 530

    /* If it was the last vout, tell the interface to show up */
    if( p_playlist != NULL )
    {
Clément Stenac's avatar
Clément Stenac committed
531
        vout_thread_t *p_another_vout = vlc_object_find( p_playlist,
532 533 534 535 536 537 538 539 540 541 542 543 544
                                            VLC_OBJECT_VOUT, FIND_ANYWHERE );
        if( p_another_vout == NULL )
        {
            vlc_value_t val;
            val.b_bool = VLC_TRUE;
            var_Set( p_playlist, "intf-show", val );
        }
        else
        {
            vlc_object_release( p_another_vout );
        }
        vlc_object_release( p_playlist );
    }
Michel Kaempf's avatar
Michel Kaempf committed
545 546
}

547
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
548
 * InitThread: initialize video output thread
549
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
550 551 552
 * 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.
553
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
554
static int InitThread( vout_thread_t *p_vout )
Vincent Seguin's avatar
Vincent Seguin committed
555
{
556 557
    int i;
    unsigned int i_aspect_x, i_aspect_y;
Sam Hocevar's avatar
 
Sam Hocevar committed
558

Sam Hocevar's avatar
 
Sam Hocevar committed
559 560 561 562
    vlc_mutex_lock( &p_vout->change_lock );

#ifdef STATS
    p_vout->c_loops = 0;
Vincent Seguin's avatar
Vincent Seguin committed
563 564
#endif

Sam Hocevar's avatar
 
Sam Hocevar committed
565
    /* Initialize output method, it allocates direct buffers for us */
Sam Hocevar's avatar
 
Sam Hocevar committed
566
    if( p_vout->pf_init( p_vout ) )
Vincent Seguin's avatar
Vincent Seguin committed
567
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
568
        vlc_mutex_unlock( &p_vout->change_lock );
569
        return VLC_EGENERIC;
Sam Hocevar's avatar
 
Sam Hocevar committed
570 571
    }

Sam Hocevar's avatar
 
Sam Hocevar committed
572
    if( !I_OUTPUTPICTURES )
Sam Hocevar's avatar
 
Sam Hocevar committed
573
    {
574 575
        msg_Err( p_vout, "plugin was unable to allocate at least "
                         "one direct buffer" );
Sam Hocevar's avatar
 
Sam Hocevar committed
576
        p_vout->pf_end( p_vout );
Sam Hocevar's avatar
 
Sam Hocevar committed
577
        vlc_mutex_unlock( &p_vout->change_lock );
578
        return VLC_EGENERIC;
579
    }
Vincent Seguin's avatar
Vincent Seguin committed
580

Gildas Bazin's avatar
 
Gildas Bazin committed
581 582 583 584 585 586 587 588 589
    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;
    }

590
    msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
Sam Hocevar's avatar
 
Sam Hocevar committed
591

592
#if 0
593 594 595 596 597 598 599 600 601 602 603 604 605
    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 )
            {
Clément Stenac's avatar
Clément Stenac committed
606
                vout_AspectRatio( i_new_aspect, &i_aspect_x, &i_aspect_y );
607

608
                msg_Dbg( p_vout, "output ratio forced to %i:%i\n",
609
                         i_aspect_x, i_aspect_y );
610 611 612 613
                p_vout->output.i_aspect = i_new_aspect;
            }
        }
    }
614
#endif
615

616
    vout_AspectRatio( p_vout->render.i_aspect, &i_aspect_x, &i_aspect_y );
617 618 619 620
    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,
621
             i_aspect_x, i_aspect_y );
Sam Hocevar's avatar
 
Sam Hocevar committed
622

623
    vout_AspectRatio( p_vout->output.i_aspect, &i_aspect_x, &i_aspect_y );
624 625 626 627
    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,
628
             i_aspect_x, i_aspect_y );
Sam Hocevar's avatar
 
Sam Hocevar committed
629

Sam Hocevar's avatar
 
Sam Hocevar committed
630 631 632 633 634 635 636 637
    /* 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
638
    /* Check whether we managed to create direct buffers similar to
639
     * the render buffers, ie same size and chroma */
Sam Hocevar's avatar
 
Sam Hocevar committed
640 641
    if( ( p_vout->output.i_width == p_vout->render.i_width )
     && ( p_vout->output.i_height == p_vout->render.i_height )
642
     && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
Sam Hocevar's avatar
 
Sam Hocevar committed
643
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
644 645 646 647
        /* 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
648 649
        p_vout->b_direct = 1;

Sam Hocevar's avatar
 
Sam Hocevar committed
650 651
        for( i = 1; i < VOUT_MAX_PICTURES; i++ )
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
652 653 654 655 656 657 658 659
            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
660 661 662
            PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
            I_RENDERPICTURES++;
        }
Gildas Bazin's avatar
 
Gildas Bazin committed
663 664 665 666

        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
667 668 669
    }
    else
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
670 671 672
        /* 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
673 674
        p_vout->b_direct = 0;

Sam Hocevar's avatar
 
Sam Hocevar committed
675
        /* Choose the best module */
Gildas Bazin's avatar
 
Gildas Bazin committed
676
        p_vout->chroma.p_module = module_Need( p_vout, "chroma", NULL, 0 );
Sam Hocevar's avatar
 
Sam Hocevar committed
677

Sam Hocevar's avatar
 
Sam Hocevar committed
678 679
        if( p_vout->chroma.p_module == NULL )
        {
680
            msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
681 682
                     (char*)&p_vout->render.i_chroma,
                     (char*)&p_vout->output.i_chroma );
Sam Hocevar's avatar
 
Sam Hocevar committed
683 684
            p_vout->pf_end( p_vout );
            vlc_mutex_unlock( &p_vout->change_lock );
685
            return VLC_EGENERIC;
Sam Hocevar's avatar
 
Sam Hocevar committed
686
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
687

Gildas Bazin's avatar
 
Gildas Bazin committed
688 689 690 691
        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
692 693

        /* Append render buffers after the direct buffers */
Sam Hocevar's avatar
 
Sam Hocevar committed
694
        for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
Sam Hocevar's avatar
 
Sam Hocevar committed
695 696 697
        {
            PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
            I_RENDERPICTURES++;
Gildas Bazin's avatar
 
Gildas Bazin committed
698 699 700 701

            /* Check if we have enough render pictures */
            if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
                break;
Sam Hocevar's avatar
 
Sam Hocevar committed
702 703
        }
    }
Vincent Seguin's avatar
Vincent Seguin committed
704

Sam Hocevar's avatar
 
Sam Hocevar committed
705 706 707 708 709 710 711 712 713 714 715
    /* 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;
    }

716
/* XXX XXX mark thread ready */
717
    return VLC_SUCCESS;
Vincent Seguin's avatar
Vincent Seguin committed
718 719
}

720
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
721
 * RunThread: video output thread
722
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
723 724 725
 * 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.
726
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
727
static void RunThread( vout_thread_t *p_vout)
Vincent Seguin's avatar
Vincent Seguin committed
728
{
Sam Hocevar's avatar
 
Sam Hocevar committed
729
    int             i_index;                                /* index in heap */
730
    int             i_idle_loops = 0;  /* loops without displaying a picture */
Sam Hocevar's avatar
 
Sam Hocevar committed
731 732 733 734
    mtime_t         current_date;                            /* current date */
    mtime_t         display_date;                            /* display date */

    picture_t *     p_picture;                            /* picture pointer */
735
    picture_t *     p_last_picture = NULL;                   /* last picture */
Sam Hocevar's avatar
 
Sam Hocevar committed
736 737 738 739 740 741 742 743
    picture_t *     p_directbuffer;              /* direct buffer to display */

    subpicture_t *  p_subpic;                          /* subpicture pointer */

    /*
     * Initialize thread
     */
    p_vout->b_error = InitThread( p_vout );
Gildas Bazin's avatar
 
Gildas Bazin committed
744 745 746 747

    /* signal the creation of the vout */
    vlc_thread_ready( p_vout );

Sam Hocevar's avatar
 
Sam Hocevar committed
748 749 750
    if( p_vout->b_error )
    {
        /* Destroy thread structures allocated by Create and InitThread */
751
        DestroyThread( p_vout );
Sam Hocevar's avatar
 
Sam Hocevar committed
752 753
        return;
    }
754

755
    /*
Sam Hocevar's avatar
 
Sam Hocevar committed
756 757
     * Main loop - it is not executed if an error occured during
     * initialization
758
     */
Sam Hocevar's avatar
 
Sam Hocevar committed
759
    while( (!p_vout->b_die) && (!p_vout->b_error) )
760
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
761
        /* Initialize loop variables */
762
        p_picture = NULL;
Sam Hocevar's avatar
 
Sam Hocevar committed
763 764
        display_date = 0;
        current_date = mdate();
Sam Hocevar's avatar
 
Sam Hocevar committed
765

766
#if 0
Sam Hocevar's avatar
 
Sam Hocevar committed
767 768
        p_vout->c_loops++;
        if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
769
        {
770 771
            msg_Dbg( p_vout, "picture heap: %d/%d",
                     I_RENDERPICTURES, p_vout->i_heap_size );
Sam Hocevar's avatar
 
Sam Hocevar committed
772
        }
773
#endif
Sam Hocevar's avatar
 
Sam Hocevar committed
774 775

        /*
776 777 778
         * Find the picture to display (the one with the earliest date).
         * This operation does not need lock, since only READY_PICTUREs
         * are handled. */
779
        for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
Sam Hocevar's avatar
 
Sam Hocevar committed
780
        {
Sam Hocevar's avatar
 
Sam Hocevar committed
781 782 783
            if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
                && ( (p_picture == NULL) ||
                     (PP_RENDERPICTURE[i_index]->date < display_date) ) )
784
            {
Sam Hocevar's avatar
 
Sam Hocevar committed
785
                p_picture = PP_RENDERPICTURE[i_index];
Sam Hocevar's avatar
 
Sam Hocevar committed
786
                display_date = p_picture->date;
787 788
            }
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
789

790
        if( p_picture )
791
        {
792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807
            /* 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;
                    }
                }
            }
808

809 810 811 812 813 814 815 816 817 818 819 820 821 822
            /* 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 );
823
                p_last_picture = NULL;
824 825
            }

Sam Hocevar's avatar
 
Sam Hocevar committed
826 827 828 829
            /* Compute FPS rate */
            p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
                = display_date;

830
            if( !p_picture->b_force &&
831
                p_picture != p_last_picture &&
832
                display_date < current_date + p_vout->render_time )
Sam Hocevar's avatar
 
Sam Hocevar committed
833 834 835 836 837 838 839 840 841 842 843 844 845 846
            {
                /* 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
847
                    p_vout->i_heap_size--;
Sam Hocevar's avatar
 
Sam Hocevar committed
848
                }
Gildas Bazin's avatar
 
Gildas Bazin committed
849
                msg_Warn( p_vout, "late picture skipped ("I64Fd")",
850
                                  current_date - display_date );
851 852 853 854
                vlc_mutex_unlock( &p_vout->picture_lock );

                continue;
            }
855

Gildas Bazin's avatar
 
Gildas Bazin committed
856
            if( display_date >
857
                current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
858 859 860 861 862 863 864 865 866 867 868 869 870 871 872
            {
                /* 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--;
                }
873
                msg_Warn( p_vout, "vout warning: early picture skipped "
Gildas Bazin's avatar
 
Gildas Bazin committed
874 875
                          "("I64Fd")", display_date - current_date
                          - p_vout->i_pts_delay );
Sam Hocevar's avatar
 
Sam Hocevar committed
876 877 878 879
                vlc_mutex_unlock( &p_vout->picture_lock );

                continue;
            }
880

881
            if( display_date > current_date + VOUT_DISPLAY_DELAY )
Sam Hocevar's avatar
 
Sam Hocevar committed
882 883 884 885 886 887 888 889
            {
                /* 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;
            }
890 891
            else if( p_picture == p_last_picture )
            {
892 893
                /* We are asked to repeat the previous picture, but we first
                 * wait for a couple of idle loops */
894 895 896 897 898 899 900
                if( i_idle_loops < 4 )
                {
                    p_picture    = NULL;
                    display_date = 0;
                }
                else
                {
901 902 903
                    /* 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;
904 905 906 907 908 909 910
                }
            }
        }

        if( p_picture == NULL )
        {
            i_idle_loops++;
911 912
        }

Sam Hocevar's avatar
 
Sam Hocevar committed
913 914 915 916
        /*
         * Check for subpictures to display
         */
        p_subpic = vout_SortSubPictures( p_vout, display_date );
917

Sam Hocevar's avatar
 
Sam Hocevar committed
918 919 920 921 922
        /*
         * Perform rendering
         */
        p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );

Sam Hocevar's avatar
 
Sam Hocevar committed
923
        /*
924
         * Call the plugin-specific rendering method if there is one
Sam Hocevar's avatar
 
Sam Hocevar committed
925
         */
Gildas Bazin's avatar
 
Gildas Bazin committed
926
        if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
Sam Hocevar's avatar
 
Sam Hocevar committed
927 928 929 930 931
        {
            /* Render the direct buffer returned by vout_RenderPicture */
            p_vout->pf_render( p_vout, p_directbuffer );
        }

Sam Hocevar's avatar
 
Sam Hocevar committed
932 933 934
        /*
         * Sleep, wake up
         */
Gildas Bazin's avatar
 
Gildas Bazin committed
935
        if( display_date != 0 && p_directbuffer != NULL )
936
        {
937 938 939 940 941 942 943 944 945 946 947
            mtime_t current_render_time = mdate() - current_date;
            /* if render time is very large we don't include it in the mean */
            if( current_render_time < p_vout->render_time +
                VOUT_DISPLAY_DELAY )
            {
                /* Store render time using a sliding mean weighting to
                 * current value in a 3 to 1 ratio*/
                p_vout->render_time *= 3;
                p_vout->render_time += current_render_time;
                p_vout->render_time >>= 2;
            }
948 949
        }

Sam Hocevar's avatar
 
Sam Hocevar committed
950 951 952 953
        /* Give back change lock */
        vlc_mutex_unlock( &p_vout->change_lock );

        /* Sleep a while or until a given date */
Gildas Bazin's avatar
 
Gildas Bazin committed
954
        if( display_date != 0 )
Sam Hocevar's avatar
Sam Hocevar committed
955
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
956 957 958 959 960 961
            /* If there are filters in the chain, better give them the picture
             * in advance */
            if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
            {
                mwait( display_date - VOUT_MWAIT_TOLERANCE );
            }
962 963 964
        }
        else
        {
Sam Hocevar's avatar
 
Sam Hocevar committed
965
            msleep( VOUT_IDLE_SLEEP );
966
        }
967

Sam Hocevar's avatar
 
Sam Hocevar committed
968 969 970 971 972 973 974
        /* On awakening, take back lock and send immediately picture
         * to display. */
        vlc_mutex_lock( &p_vout->change_lock );

        /*
         * Display the previously rendered picture
         */
Gildas Bazin's avatar
 
Gildas Bazin committed
975
        if( p_picture != NULL && p_directbuffer != NULL )
Sam Hocevar's avatar
 
Sam Hocevar committed
976 977
        {
            /* Display the direct buffer returned by vout_RenderPicture */
978 979 980 981
            if( p_vout->pf_display )
            {
                p_vout->pf_display( p_vout, p_directbuffer );
            }
Vincent Seguin's avatar
Vincent Seguin committed
982

983 984 985 986 987 988 989
            /* 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
990
        }
Vincent Seguin's avatar
Vincent Seguin committed
991

Sam Hocevar's avatar
 
Sam Hocevar committed
992 993 994
        /*
         * Check events and manage thread
         */
995
        if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
Sam Hocevar's avatar
 
Sam Hocevar committed
996
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
997 998 999
            /* 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
1000 1001
            p_vout->b_error = 1;
        }
Gildas Bazin's avatar
 
Gildas Bazin committed
1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019

        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 ) )
            {
1020
                msg_Err( p_vout, "cannot resize display" );
1021
                /* FIXME: pf_end will be called again in EndThread() */
Gildas Bazin's avatar
 
Gildas Bazin committed
1022 1023 1024 1025
                p_vout->b_error = 1;
            }

            /* Need to reinitialise the chroma plugin */
1026 1027 1028 1029 1030 1031
            if( p_vout->chroma.p_module )
            {
                if( p_vout->chroma.p_module->pf_deactivate )
                    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
1032
        }
1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057

        if( p_vout->i_changes & VOUT_PICTURE_BUFFERS_CHANGE )
        {
            /* This happens when the picture buffers need to be recreated.
             * This is useful on multimonitor displays for instance.
             *
             * Warning: This only works when the vout creates only 1 picture
             * buffer!! */
            p_vout->i_changes &= ~VOUT_PICTURE_BUFFERS_CHANGE;

            if( !p_vout->b_direct )
            {
                module_Unneed( p_vout, p_vout->chroma.p_module );
            }

            vlc_mutex_lock( &p_vout->picture_lock );

            p_vout->pf_end( p_vout );

            I_OUTPUTPICTURES = I_RENDERPICTURES = 0;

            p_vout->b_error = InitThread( p_vout );

            vlc_mutex_unlock( &p_vout->picture_lock );
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
1058
    }
Vincent Seguin's avatar
Vincent Seguin committed
1059

Sam Hocevar's avatar
 
Sam Hocevar committed
1060 1061 1062 1063
    /*
     * Error loop - wait until the thread destruction is requested
     */
    if( p_vout->b_error )
1064
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
1065
        ErrorThread( p_vout );
1066
    }
Michel Kaempf's avatar
Michel Kaempf committed
1067

Sam Hocevar's avatar
 
Sam Hocevar committed
1068 1069 1070 1071
    /* End of thread */
    EndThread( p_vout );

    /* Destroy thread structures allocated by CreateThread */
1072
    DestroyThread( p_vout );
Michel Kaempf's avatar
Michel Kaempf committed
1073 1074
}

1075
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1076
 * ErrorThread: RunThread() error loop
1077
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1078 1079 1080
 * 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.
1081
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
1082
static void ErrorThread( vout_thread_t *p_vout )
1083
{
Sam Hocevar's avatar
 
Sam Hocevar committed
1084 1085
    /* Wait until a `die' order */
    while( !p_vout->b_die )
1086
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
1087 1088
        /* Sleep a while */
        msleep( VOUT_IDLE_SLEEP );
1089
    }
1090 1091
}

1092
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1093
 * EndThread: thread destruction
1094
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1095 1096
 * This function is called when the thread ends after a sucessful
 * initialization. It frees all ressources allocated by InitThread.
1097
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
1098
static void EndThread( vout_thread_t *p_vout )
Michel Kaempf's avatar
Michel Kaempf committed
1099
{
Sam Hocevar's avatar
 
Sam Hocevar committed
1100
    int     i_index;                                        /* index in heap */
Michel Kaempf's avatar
Michel Kaempf committed
1101

Sam Hocevar's avatar
 
Sam Hocevar committed
1102
#ifdef STATS
Vincent Seguin's avatar
Vincent Seguin committed
1103
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
1104 1105
        struct tms cpu_usage;
        times( &cpu_usage );
Michel Kaempf's avatar
Michel Kaempf committed
1106

1107 1108
        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
1109
    }
Sam Hocevar's avatar
 
Sam Hocevar committed
1110
#endif
Michel Kaempf's avatar
Michel Kaempf committed
1111

Sam Hocevar's avatar
 
Sam Hocevar committed
1112 1113
    if( !p_vout->b_direct )
    {
1114
        module_Unneed( p_vout, p_vout->chroma.p_module );
Sam Hocevar's avatar
 
Sam Hocevar committed
1115
    }
Clément Stenac's avatar
Clément Stenac committed
1116

Sam Hocevar's avatar
 
Sam Hocevar committed
1117
    /* Destroy all remaining pictures */
1118
    for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++ )
Vincent Seguin's avatar
Vincent Seguin committed
1119
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
1120
        if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
Michel Kaempf's avatar
Michel Kaempf committed
1121
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
1122
            free( p_vout->p_picture[i_index].p_data_orig );
Michel Kaempf's avatar
Michel Kaempf committed
1123
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
1124
    }
Michel Kaempf's avatar
Michel Kaempf committed
1125

Sam Hocevar's avatar
 
Sam Hocevar committed
1126 1127 1128 1129
    /* 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
1130
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
1131 1132
            vout_DestroySubPicture( p_vout,
                                    &p_vout->p_subpicture[i_index] );
Vincent Seguin's avatar
Vincent Seguin committed
1133
        }
Michel Kaempf's avatar
Michel Kaempf committed
1134
    }
1135

Gildas Bazin's avatar
 
Gildas Bazin committed
1136 1137
    if( p_vout->p_text_renderer_module )
        module_Unneed( p_vout, p_vout->p_text_renderer_module );
Clément Stenac's avatar
Clément Stenac committed
1138

Sam Hocevar's avatar
 
Sam Hocevar committed