video_output.c 52.9 KB
Newer Older
1
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
2
 * video_output.c : video output thread
3
 *
Michel Kaempf's avatar
Michel Kaempf committed
4 5
 * This module describes the programming interface for video output threads.
 * It includes functions allowing to open a new thread, send pictures to a
6 7
 * thread, and destroy a previously oppened video output thread.
 *****************************************************************************
8
 * Copyright (C) 2000-2007 the VideoLAN team
Gildas Bazin's avatar
Gildas Bazin committed
9
 * $Id$
10
 *
Sam Hocevar's avatar
 
Sam Hocevar committed
11
 * Authors: Vincent Seguin <seguin@via.ecp.fr>
12
 *          Gildas Bazin <gbazin@videolan.org>
13 14 15 16 17
 *
 * 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
18
 *
19 20
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 22
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
23
 *
24 25
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
Antoine Cellerier's avatar
Antoine Cellerier committed
26
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
27
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
28

29
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
30
 * Preamble
31
 *****************************************************************************/
32 33 34 35
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

36
#include <vlc_common.h>
37

38
#include <stdlib.h>                                                /* free() */
39
#include <string.h>
Vincent Seguin's avatar
Vincent Seguin committed
40

Sam Hocevar's avatar
 
Sam Hocevar committed
41

42 43
#ifdef HAVE_SYS_TIMES_H
#   include <sys/times.h>
44
#endif
45

Clément Stenac's avatar
Clément Stenac committed
46
#include <vlc_vout.h>
47

Clément Stenac's avatar
Clément Stenac committed
48 49
#include <vlc_filter.h>
#include <vlc_osd.h>
50

51
#if defined( __APPLE__ )
Clément Stenac's avatar
Clément Stenac committed
52
/* Include darwin_specific.h here if needed */
53 54
#endif

Clément Stenac's avatar
Clément Stenac committed
55 56 57 58
/** FIXME This is quite ugly but needed while we don't have counters
 * helpers */
#include "input/input_internal.h"

59
#include "modules/modules.h"
60
#include <assert.h>
61

62
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
63
 * Local prototypes
64
 *****************************************************************************/
65
static int      InitThread        ( vout_thread_t * );
66
static void*    RunThread         ( vlc_object_t *  );
67
static void     ErrorThread       ( vout_thread_t * );
Laurent Aimar's avatar
Laurent Aimar committed
68
static void     CleanThread       ( vout_thread_t * );
69
static void     EndThread         ( vout_thread_t * );
Sam Hocevar's avatar
 
Sam Hocevar committed
70

71
static void     AspectRatio       ( int, int *, int * );
Michel Kaempf's avatar
Michel Kaempf committed
72

Laurent Aimar's avatar
Laurent Aimar committed
73
static void VideoFormatImportRgb( video_format_t *, const picture_heap_t * );
74 75
static void PictureHeapFixRgb( picture_heap_t * );

76 77
static void     vout_Destructor   ( vlc_object_t * p_this );

Gildas Bazin's avatar
 
Gildas Bazin committed
78
/* Object variables callbacks */
Gildas Bazin's avatar
 
Gildas Bazin committed
79 80
static int DeinterlaceCallback( vlc_object_t *, char const *,
                                vlc_value_t, vlc_value_t, void * );
81 82
static int FilterCallback( vlc_object_t *, char const *,
                           vlc_value_t, vlc_value_t, void * );
83 84
static int VideoFilter2Callback( vlc_object_t *, char const *,
                                 vlc_value_t, vlc_value_t, void * );
Gildas Bazin's avatar
 
Gildas Bazin committed
85

86 87 88
/* From vout_intf.c */
int vout_Snapshot( vout_thread_t *, picture_t * );

89 90 91
/* Display media title in OSD */
static void DisplayTitleOnOSD( vout_thread_t *p_vout );

92 93 94 95 96 97
/*****************************************************************************
 * Video Filter2 functions
 *****************************************************************************/
static picture_t *video_new_buffer_filter( filter_t *p_filter )
{
    picture_t *p_picture;
98
    vout_thread_t *p_vout = (vout_thread_t*)p_filter->p_owner;
99 100 101 102 103 104 105 106

    p_picture = vout_CreatePicture( p_vout, 0, 0, 0 );

    return p_picture;
}

static void video_del_buffer_filter( filter_t *p_filter, picture_t *p_pic )
{
107 108 109 110 111 112 113 114 115
    vout_DestroyPicture( (vout_thread_t*)p_filter->p_owner, p_pic );
}

static int video_filter_buffer_allocation_init( filter_t *p_filter, void *p_data )
{
    p_filter->pf_vout_buffer_new = video_new_buffer_filter;
    p_filter->pf_vout_buffer_del = video_del_buffer_filter;
    p_filter->p_owner = p_data; /* p_vout */
    return VLC_SUCCESS;
116 117
}

118
/*****************************************************************************
119 120 121 122 123
 * 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.
 *****************************************************************************/
124 125
vout_thread_t *__vout_Request( vlc_object_t *p_this, vout_thread_t *p_vout,
                               video_format_t *p_fmt )
126
{
127
    if( !p_fmt )
128
    {
129 130 131
        /* Video output is no longer used.
         * TODO: support for reusing video outputs with proper _thread-safe_
         * reference handling. */
132
        if( p_vout )
133
            vout_CloseAndRelease( p_vout );
134 135 136 137 138 139 140 141 142
        return NULL;
    }

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

143
    /* TODO: find a suitable unused video output */
144 145 146 147

    /* If we now have a video output, check it has the right properties */
    if( p_vout )
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
148
        char *psz_filter_chain;
149
        vlc_value_t val;
Gildas Bazin's avatar
 
Gildas Bazin committed
150

151
        /* We don't directly check for the "vout-filter" variable for obvious
Gildas Bazin's avatar
 
Gildas Bazin committed
152 153 154
         * performance reasons. */
        if( p_vout->b_filter_change )
        {
155
            var_Get( p_vout, "vout-filter", &val );
156
            psz_filter_chain = val.psz_string;
Gildas Bazin's avatar
 
Gildas Bazin committed
157

158
            if( psz_filter_chain && !*psz_filter_chain )
Gildas Bazin's avatar
 
Gildas Bazin committed
159 160 161 162
            {
                free( psz_filter_chain );
                psz_filter_chain = NULL;
            }
163
            if( p_vout->psz_filter_chain && !*p_vout->psz_filter_chain )
Gildas Bazin's avatar
 
Gildas Bazin committed
164 165 166 167 168
            {
                free( p_vout->psz_filter_chain );
                p_vout->psz_filter_chain = NULL;
            }

169
            if( !psz_filter_chain && !p_vout->psz_filter_chain )
Gildas Bazin's avatar
 
Gildas Bazin committed
170
            {
171
                p_vout->b_filter_change = false;
Gildas Bazin's avatar
 
Gildas Bazin committed
172 173
            }

174
            free( psz_filter_chain );
Gildas Bazin's avatar
 
Gildas Bazin committed
175 176
        }

177 178
        if( ( p_vout->fmt_render.i_width != p_fmt->i_width ) ||
            ( p_vout->fmt_render.i_height != p_fmt->i_height ) ||
179
            ( p_vout->fmt_render.i_aspect != p_fmt->i_aspect ) ||
Gildas Bazin's avatar
 
Gildas Bazin committed
180
            p_vout->b_filter_change )
181 182
        {
            /* We are not interested in this format, close this vout */
183
            vout_CloseAndRelease( p_vout );
184
            vlc_object_release( p_vout );
185 186 187 188 189
            p_vout = NULL;
        }
        else
        {
            /* This video output is cool! Hijack it. */
190
            spu_Attach( p_vout->p_spu, p_this, true );
191
            vlc_object_attach( p_vout, p_this );
192 193
            if( p_vout->b_title_show )
                DisplayTitleOnOSD( p_vout );
194 195 196 197 198 199 200 201
            vlc_object_release( p_vout );
        }
    }

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

202
        p_vout = vout_Create( p_this, p_fmt );
203 204 205 206 207 208 209
    }

    return p_vout;
}

/*****************************************************************************
 * vout_Create: creates a new video output thread
210
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
211 212
 * This function creates a new video output thread, and returns a pointer
 * to its description. On error, it returns NULL.
213
 *****************************************************************************/
214
vout_thread_t * __vout_Create( vlc_object_t *p_parent, video_format_t *p_fmt )
Michel Kaempf's avatar
Michel Kaempf committed
215
{
Gildas Bazin's avatar
 
Gildas Bazin committed
216 217 218
    vout_thread_t  * p_vout;                            /* thread descriptor */
    input_thread_t * p_input_thread;
    int              i_index;                               /* loop variable */
219
    vlc_value_t      val, text;
Michel Kaempf's avatar
Michel Kaempf committed
220

221 222
    unsigned int i_width = p_fmt->i_width;
    unsigned int i_height = p_fmt->i_height;
223 224 225
    vlc_fourcc_t i_chroma = p_fmt->i_chroma;
    unsigned int i_aspect = p_fmt->i_aspect;

226 227 228 229
    config_chain_t *p_cfg;
    char *psz_parser;
    char *psz_name;

230 231 232 233 234 235 236 237
    if( i_width <= 0 || i_height <= 0 || i_aspect <= 0 )
        return NULL;

    vlc_ureduce( &p_fmt->i_sar_num, &p_fmt->i_sar_den,
                 p_fmt->i_sar_num, p_fmt->i_sar_den, 50000 );
    if( p_fmt->i_sar_num <= 0 || p_fmt->i_sar_den <= 0 )
        return NULL;

238
    /* Allocate descriptor */
239 240 241
    static const char typename[] = "video output";
    p_vout = vlc_custom_create( p_parent, sizeof( *p_vout ), VLC_OBJECT_VOUT,
                                typename );
242
    if( p_vout == NULL )
243
        return NULL;
244

245
    /* Initialize pictures - translation tables and functions
Gildas Bazin's avatar
 
Gildas Bazin committed
246
     * will be initialized later in InitThread */
247
    for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++)
Gildas Bazin's avatar
 
Gildas Bazin committed
248 249 250 251 252
    {
        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;
253
        p_vout->p_picture[i_index].b_slow   = 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
254 255 256 257 258 259 260
    }

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

    /* Initialize the rendering heap */
    I_RENDERPICTURES = 0;
261

262 263
    p_vout->fmt_render        = *p_fmt;   /* FIXME palette */
    p_vout->fmt_in            = *p_fmt;   /* FIXME palette */
264

Gildas Bazin's avatar
 
Gildas Bazin committed
265 266 267 268 269
    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;

270 271 272
    p_vout->render.i_rmask    = p_fmt->i_rmask;
    p_vout->render.i_gmask    = p_fmt->i_gmask;
    p_vout->render.i_bmask    = p_fmt->i_bmask;
Gildas Bazin's avatar
 
Gildas Bazin committed
273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295

    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
296
    p_vout->i_alignment  = 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
297 298 299
    p_vout->render_time  = 10;
    p_vout->c_fps_samples = 0;
    p_vout->b_filter_change = 0;
300 301
    p_vout->pf_control = NULL;
    p_vout->p_window = NULL;
302
    p_vout->i_par_num = p_vout->i_par_den = 1;
Gildas Bazin's avatar
 
Gildas Bazin committed
303 304

    /* Initialize locks */
305 306 307
    vlc_mutex_init( &p_vout->picture_lock );
    vlc_mutex_init( &p_vout->change_lock );
    vlc_mutex_init( &p_vout->vfilter_lock );
Gildas Bazin's avatar
 
Gildas Bazin committed
308

309 310 311 312 313 314 315
    /* 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 );

316
    /* Initialize subpicture unit */
317
    p_vout->p_spu = spu_Create( p_vout );
318
    spu_Attach( p_vout->p_spu, p_parent, true );
319

Gildas Bazin's avatar
 
Gildas Bazin committed
320 321 322
    /* Attach the new object now so we can use var inheritance below */
    vlc_object_attach( p_vout, p_parent );

323 324
    spu_Init( p_vout->p_spu );

325 326
    /* Take care of some "interface/control" related initialisations */
    vout_IntfInit( p_vout );
Gildas Bazin's avatar
 
Gildas Bazin committed
327

Gildas Bazin's avatar
 
Gildas Bazin committed
328 329 330
    /* 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
331
    {
332
        /* Look for the default filter configuration */
333 334
        p_vout->psz_filter_chain =
            var_CreateGetStringCommand( p_vout, "vout-filter" );
335 336

        /* Apply video filter2 objects on the first vout */
337 338
        p_vout->psz_vf2 =
            var_CreateGetStringCommand( p_vout, "video-filter" );
Gildas Bazin's avatar
 
Gildas Bazin committed
339 340 341 342
    }
    else
    {
        /* continue the parent's filter chain */
343
        char *psz_tmp;
Gildas Bazin's avatar
 
Gildas Bazin committed
344

345 346 347 348 349 350 351
        /* Ugly hack to jump to our configuration chain */
        p_vout->psz_filter_chain
            = ((vout_thread_t *)p_parent)->psz_filter_chain;
        p_vout->psz_filter_chain
            = config_ChainCreate( &psz_tmp, &p_cfg, p_vout->psz_filter_chain );
        config_ChainDestroy( p_cfg );
        free( psz_tmp );
352 353

        /* Create a video filter2 var ... but don't inherit values */
354 355 356
        var_Create( p_vout, "video-filter",
                    VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
        p_vout->psz_vf2 = var_GetString( p_vout, "video-filter" );
Gildas Bazin's avatar
 
Gildas Bazin committed
357 358
    }

359
    var_AddCallback( p_vout, "video-filter", VideoFilter2Callback, NULL );
360 361
    p_vout->p_vf2_chain = filter_chain_New( p_vout, "video filter2",
        false, video_filter_buffer_allocation_init, NULL, p_vout );
362

Gildas Bazin's avatar
 
Gildas Bazin committed
363
    /* Choose the video output module */
Gildas Bazin's avatar
 
Gildas Bazin committed
364
    if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
Gildas Bazin's avatar
 
Gildas Bazin committed
365
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
366 367
        var_Create( p_vout, "vout", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
        var_Get( p_vout, "vout", &val );
Antoine Cellerier's avatar
Antoine Cellerier committed
368
        psz_parser = val.psz_string;
Gildas Bazin's avatar
 
Gildas Bazin committed
369 370 371
    }
    else
    {
Antoine Cellerier's avatar
Antoine Cellerier committed
372
        psz_parser = strdup( p_vout->psz_filter_chain );
Sam Hocevar's avatar
 
Sam Hocevar committed
373 374
    }

Gildas Bazin's avatar
 
Gildas Bazin committed
375
    /* Create the vout thread */
376
    char* psz_tmp = config_ChainCreate( &psz_name, &p_cfg, psz_parser );
Antoine Cellerier's avatar
Antoine Cellerier committed
377
    free( psz_parser );
378
    free( psz_tmp );
379
    p_vout->p_cfg = p_cfg;
Gildas Bazin's avatar
 
Gildas Bazin committed
380
    p_vout->p_module = module_Need( p_vout,
Gildas Bazin's avatar
 
Gildas Bazin committed
381
        ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ?
382
        "video filter" : "video output", psz_name, p_vout->psz_filter_chain && *p_vout->psz_filter_chain );
383
    free( psz_name );
Sam Hocevar's avatar
 
Sam Hocevar committed
384 385 386

    if( p_vout->p_module == NULL )
    {
387
        msg_Err( p_vout, "no suitable vout module" );
388 389
        // FIXME it's ugly but that's exactly the function that need to be called.
        EndThread( p_vout );
390
        vlc_object_detach( p_vout );
391
        vlc_object_release( p_vout );
392
        return NULL;
Sam Hocevar's avatar
 
Sam Hocevar committed
393
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
394

Gildas Bazin's avatar
 
Gildas Bazin committed
395
    /* Create a few object variables for interface interaction */
Gildas Bazin's avatar
 
Gildas Bazin committed
396 397 398
    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 );
399
    val.psz_string = (char *)""; text.psz_string = _("Disable");
Gildas Bazin's avatar
 
Gildas Bazin committed
400
    var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
401
    val.psz_string = (char *)"discard"; text.psz_string = _("Discard");
Gildas Bazin's avatar
 
Gildas Bazin committed
402
    var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
403
    val.psz_string = (char *)"blend"; text.psz_string = _("Blend");
Gildas Bazin's avatar
 
Gildas Bazin committed
404
    var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
405
    val.psz_string = (char *)"mean"; text.psz_string = _("Mean");
Gildas Bazin's avatar
 
Gildas Bazin committed
406
    var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
407
    val.psz_string = (char *)"bob"; text.psz_string = _("Bob");
Gildas Bazin's avatar
 
Gildas Bazin committed
408
    var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
409
    val.psz_string = (char *)"linear"; text.psz_string = _("Linear");
Gildas Bazin's avatar
 
Gildas Bazin committed
410
    var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );
411
    val.psz_string = (char *)"x"; text.psz_string = (char *)"X";
412 413
    var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );

Gildas Bazin's avatar
 
Gildas Bazin committed
414 415 416
    if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
    {
        var_Set( p_vout, "deinterlace", val );
417
        free( val.psz_string );
Gildas Bazin's avatar
 
Gildas Bazin committed
418
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
419 420
    var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );

421
    var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
422
    text.psz_string = _("Filters");
423 424
    var_Change( p_vout, "vout-filter", VLC_VAR_SETTEXT, &text, NULL );
    var_AddCallback( p_vout, "vout-filter", FilterCallback, NULL );
425

Gildas Bazin's avatar
 
Gildas Bazin committed
426 427
    /* Calculate delay created by internal caching */
    p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
Gildas Bazin's avatar
 
Gildas Bazin committed
428
                                           VLC_OBJECT_INPUT, FIND_ANYWHERE );
Gildas Bazin's avatar
 
Gildas Bazin committed
429 430
    if( p_input_thread )
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
431
        p_vout->i_pts_delay = p_input_thread->i_pts_delay;
Gildas Bazin's avatar
 
Gildas Bazin committed
432 433 434 435
        vlc_object_release( p_input_thread );
    }
    else
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
436
        p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
Gildas Bazin's avatar
 
Gildas Bazin committed
437 438
    }

439
    if( vlc_thread_create( p_vout, "video output", RunThread,
440
                           VLC_THREAD_PRIORITY_OUTPUT, true ) )
Michel Kaempf's avatar
Michel Kaempf committed
441
    {
442
        module_Unneed( p_vout, p_vout->p_module );
443
        vlc_object_release( p_vout );
444 445 446
        return NULL;
    }

447 448
    vlc_object_set_destructor( p_vout, vout_Destructor );

449 450 451
    if( p_vout->b_error )
    {
        msg_Err( p_vout, "video output creation failed" );
452
        vout_CloseAndRelease( p_vout );
453
        return NULL;
454
    }
Michel Kaempf's avatar
Michel Kaempf committed
455

456
    return p_vout;
Michel Kaempf's avatar
Michel Kaempf committed
457 458
}

459
/*****************************************************************************
460
 * vout_Close: Close a vout created by vout_Create.
461
 *****************************************************************************
462 463 464 465
 * You HAVE to call it on vout created by vout_Create before vlc_object_release.
 * You should NEVER call it on vout not obtained though vout_Create
 * (like with vout_Request or vlc_object_find.)
 * You can use vout_CloseAndRelease() as a convenient method.
466
 *****************************************************************************/
467
void vout_Close( vout_thread_t *p_vout )
468 469 470 471 472 473
{
    assert( p_vout );

    vlc_object_kill( p_vout );
    vlc_thread_join( p_vout );
    module_Unneed( p_vout, p_vout->p_module );
474
    p_vout->p_module = NULL;
475 476 477
}

/* */
478 479
static void vout_Destructor( vlc_object_t * p_this )
{
480
    vout_thread_t *p_vout = (vout_thread_t *)p_this;
481

482 483 484
    /* Make sure the vout was stopped first */
    assert( !p_vout->p_module );

485 486 487 488 489
    /* Destroy the locks */
    vlc_mutex_destroy( &p_vout->picture_lock );
    vlc_mutex_destroy( &p_vout->change_lock );
    vlc_mutex_destroy( &p_vout->vfilter_lock );

490
    free( p_vout->psz_filter_chain );
Gildas Bazin's avatar
 
Gildas Bazin committed
491

492 493
    config_ChainDestroy( p_vout->p_cfg );

494
#ifndef __APPLE__
495
    vout_thread_t *p_another_vout;
496

497 498 499 500 501 502 503 504
    /* This is a dirty hack mostly for Linux, where there is no way to get the
     * GUI back if you closed it while playing video. This is solved in
     * Mac OS X, where we have this novelty called menubar, that will always
     * allow you access to the applications main functionality. They should try
     * that on linux sometime. */
    p_another_vout = vlc_object_find( p_this->p_libvlc,
                                      VLC_OBJECT_VOUT, FIND_ANYWHERE );
    if( p_another_vout == NULL )
505
        var_SetBool( p_this->p_libvlc, "intf-show", true );
506 507
    else
        vlc_object_release( p_another_vout );
508
#endif
Michel Kaempf's avatar
Michel Kaempf committed
509 510
}

511
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
512
 * InitThread: initialize video output thread
513
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
514 515 516
 * 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.
517
 * XXX You have to enter it with change_lock taken.
518
 *****************************************************************************/
519 520
static int ChromaCreate( vout_thread_t *p_vout );
static void ChromaDestroy( vout_thread_t *p_vout );
Laurent Aimar's avatar
Laurent Aimar committed
521
static void DropPicture( vout_thread_t *p_vout, picture_t *p_picture );
522

Sam Hocevar's avatar
 
Sam Hocevar committed
523
static int InitThread( vout_thread_t *p_vout )
Vincent Seguin's avatar
Vincent Seguin committed
524
{
525
    int i, i_aspect_x, i_aspect_y;
Sam Hocevar's avatar
 
Sam Hocevar committed
526

Sam Hocevar's avatar
 
Sam Hocevar committed
527 528
#ifdef STATS
    p_vout->c_loops = 0;
Vincent Seguin's avatar
Vincent Seguin committed
529 530
#endif

Sam Hocevar's avatar
 
Sam Hocevar committed
531
    /* Initialize output method, it allocates direct buffers for us */
Sam Hocevar's avatar
 
Sam Hocevar committed
532
    if( p_vout->pf_init( p_vout ) )
533
        return VLC_EGENERIC;
Sam Hocevar's avatar
 
Sam Hocevar committed
534

Sam Hocevar's avatar
 
Sam Hocevar committed
535
    if( !I_OUTPUTPICTURES )
Sam Hocevar's avatar
 
Sam Hocevar committed
536
    {
537 538
        msg_Err( p_vout, "plugin was unable to allocate at least "
                         "one direct buffer" );
Sam Hocevar's avatar
 
Sam Hocevar committed
539
        p_vout->pf_end( p_vout );
540
        return VLC_EGENERIC;
541
    }
Vincent Seguin's avatar
Vincent Seguin committed
542

Gildas Bazin's avatar
 
Gildas Bazin committed
543 544 545 546 547 548 549 550
    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 );
        return VLC_EGENERIC;
    }

551
    msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
Sam Hocevar's avatar
 
Sam Hocevar committed
552

553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595
    AspectRatio( p_vout->fmt_render.i_aspect, &i_aspect_x, &i_aspect_y );

    msg_Dbg( p_vout, "picture in %ix%i (%i,%i,%ix%i), "
             "chroma %4.4s, ar %i:%i, sar %i:%i",
             p_vout->fmt_render.i_width, p_vout->fmt_render.i_height,
             p_vout->fmt_render.i_x_offset, p_vout->fmt_render.i_y_offset,
             p_vout->fmt_render.i_visible_width,
             p_vout->fmt_render.i_visible_height,
             (char*)&p_vout->fmt_render.i_chroma,
             i_aspect_x, i_aspect_y,
             p_vout->fmt_render.i_sar_num, p_vout->fmt_render.i_sar_den );

    AspectRatio( p_vout->fmt_in.i_aspect, &i_aspect_x, &i_aspect_y );

    msg_Dbg( p_vout, "picture user %ix%i (%i,%i,%ix%i), "
             "chroma %4.4s, ar %i:%i, sar %i:%i",
             p_vout->fmt_in.i_width, p_vout->fmt_in.i_height,
             p_vout->fmt_in.i_x_offset, p_vout->fmt_in.i_y_offset,
             p_vout->fmt_in.i_visible_width,
             p_vout->fmt_in.i_visible_height,
             (char*)&p_vout->fmt_in.i_chroma,
             i_aspect_x, i_aspect_y,
             p_vout->fmt_in.i_sar_num, p_vout->fmt_in.i_sar_den );

    if( !p_vout->fmt_out.i_width || !p_vout->fmt_out.i_height )
    {
        p_vout->fmt_out.i_width = p_vout->fmt_out.i_visible_width =
            p_vout->output.i_width;
        p_vout->fmt_out.i_height = p_vout->fmt_out.i_visible_height =
            p_vout->output.i_height;
        p_vout->fmt_out.i_x_offset =  p_vout->fmt_out.i_y_offset = 0;

        p_vout->fmt_out.i_aspect = p_vout->output.i_aspect;
        p_vout->fmt_out.i_chroma = p_vout->output.i_chroma;
    }
    if( !p_vout->fmt_out.i_sar_num || !p_vout->fmt_out.i_sar_num )
    {
        p_vout->fmt_out.i_sar_num = p_vout->fmt_out.i_aspect *
            p_vout->fmt_out.i_height;
        p_vout->fmt_out.i_sar_den = VOUT_ASPECT_FACTOR *
            p_vout->fmt_out.i_width;
    }

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
596 597
    vlc_ureduce( &p_vout->fmt_out.i_sar_num, &p_vout->fmt_out.i_sar_den,
                 p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den, 0 );
598 599

    AspectRatio( p_vout->fmt_out.i_aspect, &i_aspect_x, &i_aspect_y );
Sam Hocevar's avatar
 
Sam Hocevar committed
600

601 602
    msg_Dbg( p_vout, "picture out %ix%i (%i,%i,%ix%i), "
             "chroma %4.4s, ar %i:%i, sar %i:%i",
603
             p_vout->fmt_out.i_width, p_vout->fmt_out.i_height,
604 605 606 607 608
             p_vout->fmt_out.i_x_offset, p_vout->fmt_out.i_y_offset,
             p_vout->fmt_out.i_visible_width,
             p_vout->fmt_out.i_visible_height,
             (char*)&p_vout->fmt_out.i_chroma,
             i_aspect_x, i_aspect_y,
609
             p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den );
Sam Hocevar's avatar
 
Sam Hocevar committed
610

611
    /* FIXME removed the need of both fmt_* and heap infos */
Sam Hocevar's avatar
 
Sam Hocevar committed
612
    /* Calculate shifts from system-updated masks */
613 614 615 616 617
    PictureHeapFixRgb( &p_vout->render );
    VideoFormatImportRgb( &p_vout->fmt_render, &p_vout->render );

    PictureHeapFixRgb( &p_vout->output );
    VideoFormatImportRgb( &p_vout->fmt_out, &p_vout->output );
Sam Hocevar's avatar
 
Sam Hocevar committed
618

Sam Hocevar's avatar
 
Sam Hocevar committed
619
    /* Check whether we managed to create direct buffers similar to
620
     * the render buffers, ie same size and chroma */
Sam Hocevar's avatar
 
Sam Hocevar committed
621 622
    if( ( p_vout->output.i_width == p_vout->render.i_width )
     && ( p_vout->output.i_height == p_vout->render.i_height )
623
     && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
Sam Hocevar's avatar
 
Sam Hocevar committed
624
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
625 626 627 628
        /* 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
629 630
        p_vout->b_direct = 1;

Sam Hocevar's avatar
 
Sam Hocevar committed
631 632
        for( i = 1; i < VOUT_MAX_PICTURES; i++ )
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
633 634 635 636 637 638 639 640
            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
641 642 643
            PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
            I_RENDERPICTURES++;
        }
Gildas Bazin's avatar
 
Gildas Bazin committed
644 645 646 647

        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
648 649 650
    }
    else
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
651 652 653
        /* 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
654 655
        p_vout->b_direct = 0;

656
        if( ChromaCreate( p_vout ) )
Sam Hocevar's avatar
 
Sam Hocevar committed
657 658
        {
            p_vout->pf_end( p_vout );
659
            return VLC_EGENERIC;
Sam Hocevar's avatar
 
Sam Hocevar committed
660
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
661

Gildas Bazin's avatar
 
Gildas Bazin committed
662 663 664 665
        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
666 667

        /* Append render buffers after the direct buffers */
Sam Hocevar's avatar
 
Sam Hocevar committed
668
        for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
Sam Hocevar's avatar
 
Sam Hocevar committed
669 670 671
        {
            PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
            I_RENDERPICTURES++;
Gildas Bazin's avatar
 
Gildas Bazin committed
672 673 674 675

            /* Check if we have enough render pictures */
            if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
                break;
Sam Hocevar's avatar
 
Sam Hocevar committed
676 677
        }
    }
Vincent Seguin's avatar
Vincent Seguin committed
678

Sam Hocevar's avatar
 
Sam Hocevar committed
679 680 681 682 683 684 685 686 687 688 689
    /* 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;
    }

690
    return VLC_SUCCESS;
Vincent Seguin's avatar
Vincent Seguin committed
691 692
}

693
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
694
 * RunThread: video output thread
695
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
696 697 698
 * 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.
699
 *****************************************************************************/
700
static void* RunThread( vlc_object_t *p_this )
Vincent Seguin's avatar
Vincent Seguin committed
701
{
702
    vout_thread_t *p_vout = (vout_thread_t *)p_this;
Sam Hocevar's avatar
 
Sam Hocevar committed
703
    int             i_index;                                /* index in heap */
704
    int             i_idle_loops = 0;  /* loops without displaying a picture */
Sam Hocevar's avatar
 
Sam Hocevar committed
705 706 707 708
    mtime_t         current_date;                            /* current date */
    mtime_t         display_date;                            /* display date */

    picture_t *     p_picture;                            /* picture pointer */
709
    picture_t *     p_last_picture = NULL;                   /* last picture */
Sam Hocevar's avatar
 
Sam Hocevar committed
710 711
    picture_t *     p_directbuffer;              /* direct buffer to display */

712
    subpicture_t *  p_subpic = NULL;                   /* subpicture pointer */
Sam Hocevar's avatar
 
Sam Hocevar committed
713

714
    input_thread_t *p_input = NULL ;           /* Parent input, if it exists */
715

716
    vlc_value_t     val;
717
    bool      b_drop_late;
718

719
    int             i_displayed = 0, i_lost = 0, i_loops = 0;
720
    int canc = vlc_savecancel ();
721

Sam Hocevar's avatar
 
Sam Hocevar committed
722 723 724
    /*
     * Initialize thread
     */
725
    vlc_mutex_lock( &p_vout->change_lock );
Sam Hocevar's avatar
 
Sam Hocevar committed
726
    p_vout->b_error = InitThread( p_vout );
Gildas Bazin's avatar
 
Gildas Bazin committed
727

728 729 730 731
    var_Create( p_vout, "drop-late-frames", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
    var_Get( p_vout, "drop-late-frames", &val );
    b_drop_late = val.b_bool;

Gildas Bazin's avatar
 
Gildas Bazin committed
732 733 734
    /* signal the creation of the vout */
    vlc_thread_ready( p_vout );

Sam Hocevar's avatar
 
Sam Hocevar committed
735
    if( p_vout->b_error )
736
    {
Laurent Aimar's avatar
Laurent Aimar committed
737
        EndThread( p_vout );
738
        vlc_mutex_unlock( &p_vout->change_lock );
739
        vlc_restorecancel (canc);
740
        return NULL;
741
    }
742

743 744
    vlc_object_lock( p_vout );

745 746
    if( p_vout->b_title_show )
        DisplayTitleOnOSD( p_vout );
747

748
    /*
Sam Hocevar's avatar
Sam Hocevar committed
749
     * Main loop - it is not executed if an error occurred during
Sam Hocevar's avatar
 
Sam Hocevar committed
750
     * initialization
751
     */
Laurent Aimar's avatar
Laurent Aimar committed
752
    while( vlc_object_alive( p_vout ) && !p_vout->b_error )
753
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
754
        /* Initialize loop variables */
755
        p_picture = NULL;
Sam Hocevar's avatar
 
Sam Hocevar committed
756 757
        display_date = 0;
        current_date = mdate();
Sam Hocevar's avatar
 
Sam Hocevar committed
758

759
        i_loops++;
Laurent Aimar's avatar
Laurent Aimar committed
760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777
        if( !p_input )
        {
            p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
                                       FIND_PARENT );
        }
        if( p_input )
        {
            vlc_mutex_lock( &p_input->p->counters.counters_lock );
            stats_UpdateInteger( p_vout, p_input->p->counters.p_lost_pictures,
                                 i_lost , NULL);
            stats_UpdateInteger( p_vout,
                                 p_input->p->counters.p_displayed_pictures,
                                 i_displayed , NULL);
            i_displayed = i_lost = 0;
            vlc_mutex_unlock( &p_input->p->counters.counters_lock );
            vlc_object_release( p_input );
            p_input = NULL;
        }
778
#if 0
Sam Hocevar's avatar
 
Sam Hocevar committed
779 780
        p_vout->c_loops++;
        if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
781
        {
782 783
            msg_Dbg( p_vout, "picture heap: %d/%d",
                     I_RENDERPICTURES, p_vout->i_heap_size );
Sam Hocevar's avatar
 
Sam Hocevar committed
784
        }
785
#endif
Sam Hocevar's avatar
 
Sam Hocevar committed
786 787

        /*
788 789 790
         * Find the picture to display (the one with the earliest date).
         * This operation does not need lock, since only READY_PICTUREs
         * are handled. */
791
        for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
Sam Hocevar's avatar
 
Sam Hocevar committed
792
        {
Sam Hocevar's avatar
 
Sam Hocevar committed
793 794 795
            if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
                && ( (p_picture == NULL) ||
                     (PP_RENDERPICTURE[i_index]->date < display_date) ) )
796
            {
Sam Hocevar's avatar
 
Sam Hocevar committed
797
                p_picture = PP_RENDERPICTURE[i_index];
Sam Hocevar's avatar
 
Sam Hocevar committed
798
                display_date = p_picture->date;
799 800
            }
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
801

802
        if( p_picture )
803
        {
804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819
            /* 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;
                    }
                }
            }
820

821 822 823
            /* If we found better than the last picture, destroy it */
            if( p_last_picture && p_picture != p_last_picture )
            {
Laurent Aimar's avatar
Laurent Aimar committed
824
                DropPicture( p_vout, p_last_picture );
825
                p_last_picture = NULL;
826 827
            }

Sam Hocevar's avatar
 
Sam Hocevar committed
828 829 830 831
            /* Compute FPS rate */
            p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
                = display_date;

832
            if( !p_picture->b_force &&
833
                p_picture != p_last_picture &&
834
                display_date < current_date + p_vout->render_time &&
835
                b_drop_late )
Sam Hocevar's avatar
 
Sam Hocevar committed
836 837 838
            {
                /* Picture is late: it will be destroyed and the thread
                 * will directly choose the next picture */
Laurent Aimar's avatar
Laurent Aimar committed
839 840
                DropPicture( p_vout, p_picture );
                i_lost++;
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
841
                msg_Warn( p_vout, "late picture skipped (%"PRId64")",
842
                                  current_date - display_date );
843 844
                continue;
            }
845

Gildas Bazin's avatar
 
Gildas Bazin committed
846
            if( display_date >
847
                current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
848 849
            {
                /* Picture is waaay too early: it will be destroyed */
Laurent Aimar's avatar
Laurent Aimar committed
850
                DropPicture( p_vout, p_picture );
851
                i_lost++;
852
                msg_Warn( p_vout, "vout warning: early picture skipped "
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
853
                          "(%"PRId64")", display_date - current_date
Gildas Bazin's avatar
 
Gildas Bazin committed
854
                          - p_vout->i_pts_delay );
Sam Hocevar's avatar
 
Sam Hocevar committed
855 856
                continue;
            }
857

858
            if( display_date > current_date + VOUT_DISPLAY_DELAY )
Sam Hocevar's avatar
 
Sam Hocevar committed
859 860 861 862 863 864 865 866
            {
                /* 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;
            }
867 868
            else if( p_picture == p_last_picture )
            {
869 870
                /* We are asked to repeat the previous picture, but we first
                 * wait for a couple of idle loops */
871 872 873 874 875 876 877
                if( i_idle_loops < 4 )
                {
                    p_picture    = NULL;
                    display_date = 0;
                }
                else
                {
878 879 880
                    /* 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;
881 882 883 884 885 886 887
                }
            }
        }

        if( p_picture == NULL )
        {
            i_idle_loops++;
888 889
        }

890 891
        if( p_picture )
        {
892 893
            p_picture = filter_chain_VideoFilter( p_vout->p_vf2_chain,
                                                  p_picture );
894 895
        }

896 897
        if( p_picture && p_vout->b_snapshot )
        {
898
            p_vout->b_snapshot = false;
899 900 901
            vout_Snapshot( p_vout, p_picture );
        }

Sam Hocevar's avatar
 
Sam Hocevar committed
902 903 904
        /*
         * Check for subpictures to display
         */
905 906
        if( display_date > 0 )
        {
907
            if( !p_input )
908
            {
909 910
                p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
                                           FIND_PARENT );
911
            }
912
            p_subpic = spu_SortSubpictures( p_vout->p_spu, display_date,
913
            p_input ? var_GetBool( p_input, "state" ) == PAUSE_S : false );
914 915 916
            if( p_input )
                vlc_object_release( p_input );
            p_input = NULL;
917
        }
918

Sam Hocevar's avatar
 
Sam Hocevar committed
919 920 921
        /*
         * Perform rendering
         */
922
        i_displayed++;
Sam Hocevar's avatar
 
Sam Hocevar committed
923 924
        p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );

Sam Hocevar's avatar
 
Sam Hocevar committed
925
        /*
926
         * Call the plugin-specific rendering method if there is one
Sam Hocevar's avatar
 
Sam Hocevar committed
927
         */
Gildas Bazin's avatar
 
Gildas Bazin committed
928
        if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
Sam Hocevar's avatar
 
Sam Hocevar committed
929 930 931 932 933
        {
            /* Render the direct buffer returned by vout_RenderPicture */
            p_vout->pf_render( p_vout, p_directbuffer );
        }

Sam Hocevar's avatar
 
Sam Hocevar committed
934 935 936
        /*
         * Sleep, wake up
         */
Gildas Bazin's avatar
 
Gildas Bazin committed
937
        if( display_date != 0 && p_directbuffer != NULL )
938
        {
939 940 941 942 943 944 945 946 947 948 949
            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;
            }
950 951
        }

Sam Hocevar's avatar
 
Sam Hocevar committed
952 953 954
        /* Give back change lock */
        vlc_mutex_unlock( &p_vout->change_lock );

955 956
        vlc_object_unlock( p_vout );

Sam Hocevar's avatar
 
Sam Hocevar committed
957
        /* 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
        /* On awakening, take back lock and send immediately picture
         * to display. */
974 975 976
        vlc_object_lock( p_vout );
        /* Note: vlc_object_alive() could be false here, and we
         * could be dead */
Sam Hocevar's avatar
 
Sam Hocevar committed
977 978 979 980 981
        vlc_mutex_lock( &p_vout->change_lock );

        /*
         * Display the previously rendered picture
         */
Gildas Bazin's avatar
 
Gildas Bazin committed
982
        if( p_picture != NULL && p_directbuffer != NULL )