video_output.c 49.5 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

Gildas Bazin's avatar
 
Gildas Bazin committed
60
/* Object variables callbacks */
Gildas Bazin's avatar
 
Gildas Bazin committed
61 62
static int DeinterlaceCallback( vlc_object_t *, char const *,
                                vlc_value_t, vlc_value_t, void * );
63 64
static int FilterCallback( vlc_object_t *, char const *,
                           vlc_value_t, vlc_value_t, void * );
Gildas Bazin's avatar
 
Gildas Bazin committed
65

66 67 68 69 70
/**
 * vout_AspectRatio
 *
 * Set the i_aspect_x and i_aspect_y from i_aspect.
 */
Clément Stenac's avatar
Clément Stenac committed
71 72 73 74
void vout_AspectRatio( unsigned int i_aspect,
                       /*out*/ unsigned int *i_aspect_x,
                       /*out*/ unsigned int *i_aspect_y )
{
75 76 77 78 79
  unsigned int i_pgcd = ReduceHeight( i_aspect );
  *i_aspect_x = i_aspect / i_pgcd;
  *i_aspect_y = VOUT_ASPECT_FACTOR / i_pgcd;
}

80
/*****************************************************************************
81 82 83 84 85 86 87 88 89 90 91
 * 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
92
        /* Reattach video output to input before bailing out */
93 94
        if( p_vout )
        {
95
            vlc_object_t *p_playlist;
96

97
            p_playlist = vlc_object_find( p_this,
98
                                          VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
Gildas Bazin's avatar
 
Gildas Bazin committed
99

100
            if( p_playlist )
101 102
            {
                vlc_object_detach( p_vout );
103
                vlc_object_attach( p_vout, p_playlist );
104

105
                vlc_object_release( p_playlist );
106 107 108
            }
            else
            {
Clément Stenac's avatar
Clément Stenac committed
109
                msg_Dbg( p_this, "cannot find playlist, destroying vout" );
110 111 112
                vlc_object_detach( p_vout );
                vout_Destroy( p_vout );
            }
113 114 115 116 117 118 119 120 121 122 123 124 125 126 127
        }
        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 )
        {
128
            vlc_object_t *p_playlist;
Gildas Bazin's avatar
 
Gildas Bazin committed
129

130 131 132
            p_playlist = vlc_object_find( p_this,
                                          VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
            if( p_playlist )
Gildas Bazin's avatar
 
Gildas Bazin committed
133
            {
134 135
                p_vout = vlc_object_find( p_playlist,
                                          VLC_OBJECT_VOUT, FIND_CHILD );
136
                /* only first children of p_input for unused vout */
137
                if( p_vout && p_vout->p_parent != p_playlist )
138 139 140 141
                {
                    vlc_object_release( p_vout );
                    p_vout = NULL;
                }
142
                vlc_object_release( p_playlist );
Gildas Bazin's avatar
 
Gildas Bazin committed
143
            }
144 145 146 147 148 149
        }
    }

    /* If we now have a video output, check it has the right properties */
    if( p_vout )
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175
        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
176
            if( psz_filter_chain ) free( psz_filter_chain );
Gildas Bazin's avatar
 
Gildas Bazin committed
177 178
        }

179 180
        if( ( p_vout->render.i_width != i_width ) ||
            ( p_vout->render.i_height != i_height ) ||
Gildas Bazin's avatar
 
Gildas Bazin committed
181
            ( p_vout->render.i_chroma != i_chroma ) ||
182 183
            ( p_vout->render.i_aspect != i_aspect
                    && !p_vout->b_override_aspect ) ||
Gildas Bazin's avatar
 
Gildas Bazin committed
184
            p_vout->b_filter_change )
185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212
        {
            /* 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
213
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
214 215
 * This function creates a new video output thread, and returns a pointer
 * to its description. On error, it returns NULL.
216
 *****************************************************************************/
217 218 219
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
220
{
Gildas Bazin's avatar
 
Gildas Bazin committed
221 222 223 224
    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
225
    vlc_value_t      val, text;
Michel Kaempf's avatar
Michel Kaempf committed
226

227
    /* Allocate descriptor */
228
    p_vout = vlc_object_create( p_parent, VLC_OBJECT_VOUT );
229
    if( p_vout == NULL )
Michel Kaempf's avatar
Michel Kaempf committed
230
    {
231
        msg_Err( p_parent, "out of memory" );
232
        return NULL;
Michel Kaempf's avatar
Michel Kaempf committed
233
    }
234

Gildas Bazin's avatar
 
Gildas Bazin committed
235 236
    /* Initialize pictures and subpictures - translation tables and functions
     * will be initialized later in InitThread */
237
    for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++)
Gildas Bazin's avatar
 
Gildas Bazin committed
238 239 240 241 242
    {
        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;
243
        p_vout->p_picture[i_index].b_slow   = 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
244 245 246 247 248 249 250 251 252 253 254
    }

    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;

255 256 257 258
    /* Register the default subpicture channel */
    p_vout->p_default_channel = NULL;
    p_vout->i_channel_count = 1;

Gildas Bazin's avatar
 
Gildas Bazin committed
259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291
    /* 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
292
    p_vout->i_alignment  = 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
293 294 295
    p_vout->render_time  = 10;
    p_vout->c_fps_samples = 0;
    p_vout->b_filter_change = 0;
296
    p_vout->pf_control = 0;
297
    p_vout->p_parent_intf = 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
298 299 300 301 302 303 304 305

    /* 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 );

306 307 308 309
    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
310 311 312 313 314 315 316 317
    /* 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 );

318 319
    /* Take care of some "interface/control" related initialisations */
    vout_IntfInit( p_vout );
Gildas Bazin's avatar
 
Gildas Bazin committed
320

321 322
    p_vout->b_override_aspect = VLC_FALSE;

Gildas Bazin's avatar
 
Gildas Bazin committed
323 324 325
    /* 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
326
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
327
        var_Get( p_vout, "aspect-ratio", &val );
328 329

        /* Check whether the user tried to override aspect ratio */
Gildas Bazin's avatar
 
Gildas Bazin committed
330
        if( val.psz_string )
331 332
        {
            unsigned int i_new_aspect = i_aspect;
Gildas Bazin's avatar
 
Gildas Bazin committed
333
            char *psz_parser = strchr( val.psz_string, ':' );
334 335 336 337

            if( psz_parser )
            {
                *psz_parser++ = '\0';
Gildas Bazin's avatar
 
Gildas Bazin committed
338 339
                i_new_aspect = atoi( val.psz_string ) * VOUT_ASPECT_FACTOR
                                                      / atoi( psz_parser );
340 341 342 343
            }
            else
            {
                i_new_aspect = i_width * VOUT_ASPECT_FACTOR
Gildas Bazin's avatar
 
Gildas Bazin committed
344
                                       * atof( val.psz_string )
345 346 347
                                       / i_height;
            }

Gildas Bazin's avatar
 
Gildas Bazin committed
348
            free( val.psz_string );
349 350 351

            if( i_new_aspect && i_new_aspect != i_aspect )
            {
Clément Stenac's avatar
Clément Stenac committed
352 353 354
                unsigned int i_aspect_x, i_aspect_y;

                vout_AspectRatio( i_new_aspect, &i_aspect_x, &i_aspect_y );
355 356

                msg_Dbg( p_vout, "overriding source aspect ratio to %i:%i",
357
                         i_aspect_x, i_aspect_y );
358

Gildas Bazin's avatar
 
Gildas Bazin committed
359
                p_vout->render.i_aspect = i_new_aspect;
360 361

                p_vout->b_override_aspect = VLC_TRUE;
362 363 364 365
            }
        }

        /* Look for the default filter configuration */
Gildas Bazin's avatar
 
Gildas Bazin committed
366 367 368
        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
369 370 371 372 373 374 375 376 377 378 379 380 381
    }
    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
382
    if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
Gildas Bazin's avatar
 
Gildas Bazin committed
383
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
384 385 386
        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
387 388 389 390 391 392 393 394 395 396 397 398
    }
    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
399 400
    }

Gildas Bazin's avatar
 
Gildas Bazin committed
401 402 403 404
    /* 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
405
    /* Create the vout thread */
Gildas Bazin's avatar
 
Gildas Bazin committed
406
    p_vout->p_module = module_Need( p_vout,
Gildas Bazin's avatar
 
Gildas Bazin committed
407 408
        ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ?
        "video filter" : "video output", psz_plugin, 0 );
Sam Hocevar's avatar
 
Sam Hocevar committed
409

Gildas Bazin's avatar
 
Gildas Bazin committed
410
    if( psz_plugin ) free( psz_plugin );
Sam Hocevar's avatar
 
Sam Hocevar committed
411 412
    if( p_vout->p_module == NULL )
    {
413
        msg_Err( p_vout, "no suitable vout module" );
414
        vlc_object_detach( p_vout );
415
        vlc_object_destroy( p_vout );
416
        return NULL;
Sam Hocevar's avatar
 
Sam Hocevar committed
417
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
418

Gildas Bazin's avatar
 
Gildas Bazin committed
419 420
    p_vout->p_text_renderer_module =
        module_Need( p_vout, "text renderer", NULL, 0 );
421 422
    if( p_vout->p_text_renderer_module == NULL )
    {
423 424
        msg_Warn( p_vout, "no suitable text renderer module" );
        p_vout->pf_add_string = NULL;
425
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
426

Gildas Bazin's avatar
 
Gildas Bazin committed
427
    /* Create a few object variables for interface interaction */
Gildas Bazin's avatar
 
Gildas Bazin committed
428 429 430 431 432 433 434 435 436 437 438 439 440 441 442
    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
443 444 445
    if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
    {
        var_Set( p_vout, "deinterlace", val );
Gildas Bazin's avatar
 
Gildas Bazin committed
446
        if( val.psz_string ) free( val.psz_string );
Gildas Bazin's avatar
 
Gildas Bazin committed
447
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
448 449
    var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );

450 451 452 453 454

    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
455
    if( val.psz_string )
456 457
    {
        var_Set( p_vout, "filter", val );
Gildas Bazin's avatar
 
Gildas Bazin committed
458
        free( val.psz_string );
459 460 461
    }
    var_AddCallback( p_vout, "filter", FilterCallback, NULL );

Gildas Bazin's avatar
 
Gildas Bazin committed
462 463
    /* Calculate delay created by internal caching */
    p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
Gildas Bazin's avatar
 
Gildas Bazin committed
464
                                           VLC_OBJECT_INPUT, FIND_ANYWHERE );
Gildas Bazin's avatar
 
Gildas Bazin committed
465 466
    if( p_input_thread )
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
467
        p_vout->i_pts_delay = p_input_thread->i_pts_delay;
Gildas Bazin's avatar
 
Gildas Bazin committed
468 469 470 471
        vlc_object_release( p_input_thread );
    }
    else
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
472
        p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
Gildas Bazin's avatar
 
Gildas Bazin committed
473 474
    }

475
    if( vlc_thread_create( p_vout, "video output", RunThread,
Gildas Bazin's avatar
 
Gildas Bazin committed
476
                           VLC_THREAD_PRIORITY_OUTPUT, VLC_TRUE ) )
Michel Kaempf's avatar
Michel Kaempf committed
477
    {
478
        msg_Err( p_vout, "out of memory" );
479
        module_Unneed( p_vout, p_vout->p_module );
480 481 482 483 484 485 486 487 488 489 490
        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;
491 492 493 494 495

        if( p_vout->p_text_renderer_module )
        {
            module_Unneed( p_vout, p_vout->p_text_renderer_module );
        }
496 497 498
        vlc_thread_join( p_vout );

        vlc_object_detach( p_vout );
499 500
        vlc_object_destroy( p_vout );
        return NULL;
501
    }
Michel Kaempf's avatar
Michel Kaempf committed
502

503
    return p_vout;
Michel Kaempf's avatar
Michel Kaempf committed
504 505
}

506
/*****************************************************************************
507
 * vout_Destroy: destroys a previously created video output
508 509
 *****************************************************************************
 * Destroy a terminated thread.
Michel Kaempf's avatar
Michel Kaempf committed
510
 * The function will request a destruction of the specified thread. If pi_error
511
 * is NULL, it will return once the thread is destroyed. Else, it will be
Michel Kaempf's avatar
Michel Kaempf committed
512
 * update using one of the THREAD_* constants.
513
 *****************************************************************************/
514
void vout_Destroy( vout_thread_t *p_vout )
Clément Stenac's avatar
Clément Stenac committed
515
{
516
    vlc_object_t *p_playlist;
Clément Stenac's avatar
Clément Stenac committed
517

Michel Kaempf's avatar
Michel Kaempf committed
518
    /* Request thread destruction */
519
    p_vout->b_die = VLC_TRUE;
520
    vlc_thread_join( p_vout );
Michel Kaempf's avatar
Michel Kaempf committed
521

522 523
    var_Destroy( p_vout, "intf-change" );

Clément Stenac's avatar
Clément Stenac committed
524
    p_playlist = vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
525 526
                                  FIND_ANYWHERE );

Gildas Bazin's avatar
 
Gildas Bazin committed
527 528
    if( p_vout->psz_filter_chain ) free( p_vout->psz_filter_chain );

529
    /* Free structure */
530
    vlc_object_destroy( p_vout );
531 532 533 534

    /* If it was the last vout, tell the interface to show up */
    if( p_playlist != NULL )
    {
Clément Stenac's avatar
Clément Stenac committed
535
        vout_thread_t *p_another_vout = vlc_object_find( p_playlist,
536 537 538 539 540 541 542 543 544 545 546 547 548
                                            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
549 550
}

551
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
552
 * InitThread: initialize video output thread
553
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
554 555 556
 * 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.
557
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
558
static int InitThread( vout_thread_t *p_vout )
Vincent Seguin's avatar
Vincent Seguin committed
559
{
560 561
    int i;
    unsigned int i_aspect_x, i_aspect_y;
Sam Hocevar's avatar
 
Sam Hocevar committed
562

Sam Hocevar's avatar
 
Sam Hocevar committed
563 564 565 566
    vlc_mutex_lock( &p_vout->change_lock );

#ifdef STATS
    p_vout->c_loops = 0;
Vincent Seguin's avatar
Vincent Seguin committed
567 568
#endif

Sam Hocevar's avatar
 
Sam Hocevar committed
569
    /* Initialize output method, it allocates direct buffers for us */
Sam Hocevar's avatar
 
Sam Hocevar committed
570
    if( p_vout->pf_init( p_vout ) )
Vincent Seguin's avatar
Vincent Seguin committed
571
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
572
        vlc_mutex_unlock( &p_vout->change_lock );
573
        return VLC_EGENERIC;
Sam Hocevar's avatar
 
Sam Hocevar committed
574 575
    }

Sam Hocevar's avatar
 
Sam Hocevar committed
576
    if( !I_OUTPUTPICTURES )
Sam Hocevar's avatar
 
Sam Hocevar committed
577
    {
578 579
        msg_Err( p_vout, "plugin was unable to allocate at least "
                         "one direct buffer" );
Sam Hocevar's avatar
 
Sam Hocevar committed
580
        p_vout->pf_end( p_vout );
Sam Hocevar's avatar
 
Sam Hocevar committed
581
        vlc_mutex_unlock( &p_vout->change_lock );
582
        return VLC_EGENERIC;
583
    }
Vincent Seguin's avatar
Vincent Seguin committed
584

Gildas Bazin's avatar
 
Gildas Bazin committed
585 586 587 588 589 590 591 592 593
    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;
    }

594
    msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
Sam Hocevar's avatar
 
Sam Hocevar committed
595

596
#if 0
597 598 599 600 601 602 603 604 605 606 607 608 609
    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
610
                vout_AspectRatio( i_new_aspect, &i_aspect_x, &i_aspect_y );
611

612
                msg_Dbg( p_vout, "output ratio forced to %i:%i\n",
613
                         i_aspect_x, i_aspect_y );
614 615 616 617
                p_vout->output.i_aspect = i_new_aspect;
            }
        }
    }
618
#endif
619

620
    vout_AspectRatio( p_vout->render.i_aspect, &i_aspect_x, &i_aspect_y );
621 622 623 624
    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,
625
             i_aspect_x, i_aspect_y );
Sam Hocevar's avatar
 
Sam Hocevar committed
626

627
    vout_AspectRatio( p_vout->output.i_aspect, &i_aspect_x, &i_aspect_y );
628 629 630 631
    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,
632
             i_aspect_x, i_aspect_y );
Sam Hocevar's avatar
 
Sam Hocevar committed
633

Sam Hocevar's avatar
 
Sam Hocevar committed
634 635 636 637 638 639 640 641
    /* 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
642
    /* Check whether we managed to create direct buffers similar to
643
     * the render buffers, ie same size and chroma */
Sam Hocevar's avatar
 
Sam Hocevar committed
644 645
    if( ( p_vout->output.i_width == p_vout->render.i_width )
     && ( p_vout->output.i_height == p_vout->render.i_height )
646
     && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
Sam Hocevar's avatar
 
Sam Hocevar committed
647
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
648 649 650 651
        /* 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
652 653
        p_vout->b_direct = 1;

Sam Hocevar's avatar
 
Sam Hocevar committed
654 655
        for( i = 1; i < VOUT_MAX_PICTURES; i++ )
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
656 657 658 659 660 661 662 663
            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
664 665 666
            PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
            I_RENDERPICTURES++;
        }
Gildas Bazin's avatar
 
Gildas Bazin committed
667 668 669 670

        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
671 672 673
    }
    else
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
674 675 676
        /* 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
677 678
        p_vout->b_direct = 0;

Sam Hocevar's avatar
 
Sam Hocevar committed
679
        /* Choose the best module */
Gildas Bazin's avatar
 
Gildas Bazin committed
680
        p_vout->chroma.p_module = module_Need( p_vout, "chroma", NULL, 0 );
Sam Hocevar's avatar
 
Sam Hocevar committed
681

Sam Hocevar's avatar
 
Sam Hocevar committed
682 683
        if( p_vout->chroma.p_module == NULL )
        {
684
            msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
685 686
                     (char*)&p_vout->render.i_chroma,
                     (char*)&p_vout->output.i_chroma );
Sam Hocevar's avatar
 
Sam Hocevar committed
687 688
            p_vout->pf_end( p_vout );
            vlc_mutex_unlock( &p_vout->change_lock );
689
            return VLC_EGENERIC;
Sam Hocevar's avatar
 
Sam Hocevar committed
690
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
691

Gildas Bazin's avatar
 
Gildas Bazin committed
692 693 694 695
        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
696 697

        /* Append render buffers after the direct buffers */
Sam Hocevar's avatar
 
Sam Hocevar committed
698
        for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
Sam Hocevar's avatar
 
Sam Hocevar committed
699 700 701
        {
            PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
            I_RENDERPICTURES++;
Gildas Bazin's avatar
 
Gildas Bazin committed
702 703 704 705

            /* Check if we have enough render pictures */
            if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
                break;
Sam Hocevar's avatar
 
Sam Hocevar committed
706 707
        }
    }
Vincent Seguin's avatar
Vincent Seguin committed
708

Sam Hocevar's avatar
 
Sam Hocevar committed
709 710 711 712 713 714 715 716 717 718 719
    /* 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;
    }

720
/* XXX XXX mark thread ready */
721
    return VLC_SUCCESS;
Vincent Seguin's avatar
Vincent Seguin committed
722 723
}

724
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
725
 * RunThread: video output thread
726
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
727 728 729
 * 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.
730
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
731
static void RunThread( vout_thread_t *p_vout)
Vincent Seguin's avatar
Vincent Seguin committed
732
{
Sam Hocevar's avatar
 
Sam Hocevar committed
733
    int             i_index;                                /* index in heap */
734
    int             i_idle_loops = 0;  /* loops without displaying a picture */
Sam Hocevar's avatar
 
Sam Hocevar committed
735 736 737 738
    mtime_t         current_date;                            /* current date */
    mtime_t         display_date;                            /* display date */

    picture_t *     p_picture;                            /* picture pointer */
739
    picture_t *     p_last_picture = NULL;                   /* last picture */
Sam Hocevar's avatar
 
Sam Hocevar committed
740 741 742 743 744 745 746 747
    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
748 749 750 751

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

Sam Hocevar's avatar
 
Sam Hocevar committed
752 753 754
    if( p_vout->b_error )
    {
        /* Destroy thread structures allocated by Create and InitThread */
755
        DestroyThread( p_vout );
Sam Hocevar's avatar
 
Sam Hocevar committed
756 757
        return;
    }
758

759
    /*
Sam Hocevar's avatar
 
Sam Hocevar committed
760 761
     * Main loop - it is not executed if an error occured during
     * initialization
762
     */
Sam Hocevar's avatar
 
Sam Hocevar committed
763
    while( (!p_vout->b_die) && (!p_vout->b_error) )
764
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
765
        /* Initialize loop variables */
766
        p_picture = NULL;
Sam Hocevar's avatar
 
Sam Hocevar committed
767 768
        display_date = 0;
        current_date = mdate();
Sam Hocevar's avatar
 
Sam Hocevar committed
769

770
#if 0
Sam Hocevar's avatar
 
Sam Hocevar committed
771 772
        p_vout->c_loops++;
        if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
773
        {
774 775
            msg_Dbg( p_vout, "picture heap: %d/%d",
                     I_RENDERPICTURES, p_vout->i_heap_size );
Sam Hocevar's avatar
 
Sam Hocevar committed
776
        }
777
#endif
Sam Hocevar's avatar
 
Sam Hocevar committed
778 779

        /*
780 781 782
         * Find the picture to display (the one with the earliest date).
         * This operation does not need lock, since only READY_PICTUREs
         * are handled. */
783
        for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
Sam Hocevar's avatar
 
Sam Hocevar committed
784
        {
Sam Hocevar's avatar
 
Sam Hocevar committed
785 786 787
            if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
                && ( (p_picture == NULL) ||
                     (PP_RENDERPICTURE[i_index]->date < display_date) ) )
788
            {
Sam Hocevar's avatar
 
Sam Hocevar committed
789
                p_picture = PP_RENDERPICTURE[i_index];
Sam Hocevar's avatar
 
Sam Hocevar committed
790
                display_date = p_picture->date;
791 792
            }
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
793

794
        if( p_picture )
795
        {
796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811
            /* 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;
                    }
                }
            }
812

813 814 815 816 817 818 819 820 821 822 823 824 825 826
            /* 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 );
827
                p_last_picture = NULL;
828 829
            }

Sam Hocevar's avatar
 
Sam Hocevar committed
830 831 832 833
            /* Compute FPS rate */
            p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
                = display_date;

834
            if( !p_picture->b_force &&
835
                p_picture != p_last_picture &&
836
                display_date < current_date + p_vout->render_time )
Sam Hocevar's avatar
 
Sam Hocevar committed
837 838 839 840 841 842 843 844 845 846 847 848 849 850
            {
                /* 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
851
                    p_vout->i_heap_size--;
Sam Hocevar's avatar
 
Sam Hocevar committed
852
                }
Gildas Bazin's avatar
 
Gildas Bazin committed
853
                msg_Warn( p_vout, "late picture skipped ("I64Fd")",
854
                                  current_date - display_date );
855 856 857 858
                vlc_mutex_unlock( &p_vout->picture_lock );

                continue;
            }
859

Gildas Bazin's avatar
 
Gildas Bazin committed
860
            if( display_date >
861
                current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
862 863 864 865 866 867 868 869 870 871 872 873 874 875 876
            {
                /* 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--;
                }
877
                msg_Warn( p_vout, "vout warning: early picture skipped "
Gildas Bazin's avatar
 
Gildas Bazin committed
878 879
                          "("I64Fd")", display_date - current_date
                          - p_vout->i_pts_delay );
Sam Hocevar's avatar
 
Sam Hocevar committed
880 881 882 883
                vlc_mutex_unlock( &p_vout->picture_lock );

                continue;
            }
884

885
            if( display_date > current_date + VOUT_DISPLAY_DELAY )
Sam Hocevar's avatar
 
Sam Hocevar committed
886 887 888 889 890 891 892 893
            {
                /* 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;
            }
894 895
            else if( p_picture == p_last_picture )
            {
896 897
                /* We are asked to repeat the previous picture, but we first
                 * wait for a couple of idle loops */
898 899 900 901 902 903 904
                if( i_idle_loops < 4 )
                {
                    p_picture    = NULL;
                    display_date = 0;
                }
                else
                {
905 906 907
                    /* 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;
908 909 910 911 912 913 914
                }
            }
        }

        if( p_picture == NULL )
        {
            i_idle_loops++;
915 916
        }

Sam Hocevar's avatar
 
Sam Hocevar committed
917 918 919 920
        /*
         * Check for subpictures to display
         */
        p_subpic = vout_SortSubPictures( p_vout, display_date );
921

Sam Hocevar's avatar
 
Sam Hocevar committed
922 923 924 925 926
        /*
         * Perform rendering
         */
        p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );

Sam Hocevar's avatar
 
Sam Hocevar committed
927
        /*
928
         * Call the plugin-specific rendering method if there is one
Sam Hocevar's avatar
 
Sam Hocevar committed
929
         */
Gildas Bazin's avatar
 
Gildas Bazin committed
930
        if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
Sam Hocevar's avatar
 
Sam Hocevar committed
931 932 933 934 935
        {
            /* Render the direct buffer returned by vout_RenderPicture */
            p_vout->pf_render( p_vout, p_directbuffer );
        }

Sam Hocevar's avatar
 
Sam Hocevar committed
936 937 938
        /*
         * Sleep, wake up
         */
Gildas Bazin's avatar
 
Gildas Bazin committed
939
        if( display_date != 0 && p_directbuffer != NULL )
940
        {
941 942 943 944 945 946 947 948 949 950 951
            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;
            }
952 953
        }

Sam Hocevar's avatar
 
Sam Hocevar committed
954 955 956 957
        /* 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
958
        if( display_date != 0 )
Sam Hocevar's avatar
Sam Hocevar committed
959
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
960 961 962 963 964 965
            /* 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 );
            }
966 967 968
        }
        else
        {
Sam Hocevar's avatar
 
Sam Hocevar committed
969
            msleep( VOUT_IDLE_SLEEP );
970
        }
971

Sam Hocevar's avatar
 
Sam Hocevar committed
972 973 974 975 976 977 978
        /* 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
979
        if( p_picture != NULL && p_directbuffer != NULL )
Sam Hocevar's avatar
 
Sam Hocevar committed
980 981
        {
            /* Display the direct buffer returned by vout_RenderPicture */
982 983 984 985
            if( p_vout->pf_display )
            {
                p_vout->pf_display( p_vout, p_directbuffer );
            }
Vincent Seguin's avatar
Vincent Seguin committed
986

987 988 989 990 991 992 993
            /* 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
994
        }
Vincent Seguin's avatar
Vincent Seguin committed
995

Sam Hocevar's avatar
 
Sam Hocevar committed
996 997 998
        /*
         * Check events and manage thread
         */
999
        if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
Sam Hocevar's avatar
 
Sam Hocevar committed
1000
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
1001 1002 1003
            /* 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
1004 1005
            p_vout->b_error = 1;
        }
Gildas Bazin's avatar
 
Gildas Bazin committed
1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023

        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 ) )
            {
1024
                msg_Err( p_vout, "cannot resize display" );
1025
                /* FIXME: pf_end will be called again in EndThread() */
Gildas Bazin's avatar
 
Gildas Bazin committed
1026 1027 1028 1029
                p_vout->b_error = 1;
            }

            /* Need to reinitialise the chroma plugin */
1030 1031 1032 1033 1034 1035
            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
1036
        }
1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061

        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
1062
    }
Vincent Seguin's avatar
Vincent Seguin committed
1063

Sam Hocevar's avatar
 
Sam Hocevar committed
1064 1065 1066 1067
    /*
     * Error loop - wait until the thread destruction is requested
     */
    if( p_vout->b_error )
1068
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
1069
        ErrorThread( p_vout );
1070
    }
Michel Kaempf's avatar
Michel Kaempf committed
1071

Sam Hocevar's avatar
 
Sam Hocevar committed
1072 1073 1074 1075
    /* End of thread */
    EndThread( p_vout );

    /* Destroy thread structures allocated by CreateThread */
1076
    DestroyThread( p_vout );
Michel Kaempf's avatar
Michel Kaempf committed
1077 1078
}

1079
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1080
 * ErrorThread: RunThread() error loop
1081
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1082 1083 1084
 * 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.
1085
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
1086
static void ErrorThread( vout_thread_t *p_vout )
1087
{
Sam Hocevar's avatar
 
Sam Hocevar committed
1088 1089
    /* Wait until a `die' order */
    while( !p_vout->b_die )
1090
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
1091 1092
        /* Sleep a while */
        msleep( VOUT_IDLE_SLEEP );
1093
    }
1094 1095
}

1096
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1097
 * EndThread: thread destruction
1098
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1099
 * This function is called when the thread ends after a sucessful
Derk-Jan Hartman's avatar
-  
Derk-Jan Hartman committed
1100
 * initialization. It frees all resources allocated by InitThread.
1101
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
1102
static void EndThread( vout_thread_t *p_vout )
Michel Kaempf's avatar
Michel Kaempf committed
1103
{
Sam Hocevar's avatar
 
Sam Hocevar committed
1104
    int     i_index;                                        /* index in heap */
Michel Kaempf's avatar
Michel Kaempf committed
1105

Sam Hocevar's avatar
 
Sam Hocevar committed
1106
#ifdef STATS
Vincent Seguin's avatar
Vincent Seguin committed
1107
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
1108 1109
        struct tms cpu_usage;
        times( &cpu_usage );
Michel Kaempf's avatar
Michel Kaempf committed
1110

1111 1112
        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
1113
    }
Sam Hocevar's avatar
 
Sam Hocevar committed
1114
#endif
Michel Kaempf's avatar
Michel Kaempf committed
1115

Sam Hocevar's avatar
 
Sam Hocevar committed
1116 1117
    if( !p_vout->b_direct )
    {
1118
        module_Unneed( p_vout, p_vout->chroma.p_module );
Sam Hocevar's avatar
 
Sam Hocevar committed
1119
    }
Clément Stenac's avatar
Clément Stenac committed
1120

Sam Hocevar's avatar
 
Sam Hocevar committed
1121
    /* Destroy all remaining pictures */
1122
    for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++ )
Vincent Seguin's avatar
Vincent Seguin committed
1123
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
1124
        if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
Michel Kaempf's avatar
Michel Kaempf committed
1125
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
1126
            free( p_vout->p_picture[i_index].p_data_orig );
Michel Kaempf's avatar
Michel Kaempf committed
1127
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
1128
    }
Michel Kaempf's avatar
Michel Kaempf committed
1129

Sam Hocevar's avatar
 
Sam Hocevar committed
1130 1131 1132 1133
    /* 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
1134
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
1135 1136
            vout_DestroySubPicture( p_vout,
                                    &p_vout->p_subpicture[i_index] );
Vincent Seguin's avatar
Vincent Seguin committed
1137
        }
Michel Kaempf's avatar
Michel Kaempf committed