video_output.c 49.3 KB
Newer Older
1
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
2 3 4
 * video_output.c : video output thread
 * This module describes the programming interface for video output threads.
 * It includes functions allowing to open a new thread, send pictures to a
5 6
 * thread, and destroy a previously oppened video output thread.
 *****************************************************************************
7
 * Copyright (C) 2000-2001 VideoLAN
Gildas Bazin's avatar
 
Gildas Bazin committed
8
 * $Id: video_output.c,v 1.241 2003/11/26 08:18:09 gbazin Exp $
9
 *
Sam Hocevar's avatar
 
Sam Hocevar committed
10
 * Authors: Vincent Seguin <seguin@via.ecp.fr>
11 12 13 14 15
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
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 61 62
/* Object variables callbacks */
static int FullscreenCallback( vlc_object_t *, char const *,
                               vlc_value_t, vlc_value_t, void * );
Gildas Bazin's avatar
 
Gildas Bazin committed
63 64
static int DeinterlaceCallback( vlc_object_t *, char const *,
                                vlc_value_t, vlc_value_t, void * );
65 66
static int FilterCallback( vlc_object_t *, char const *,
                           vlc_value_t, vlc_value_t, void * );
Gildas Bazin's avatar
 
Gildas Bazin committed
67

68
/*****************************************************************************
69 70 71 72 73 74 75 76 77 78 79
 * 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
80
        /* Reattach video output to input before bailing out */
81 82
        if( p_vout )
        {
83
            vlc_object_t *p_playlist;
84

85
            p_playlist = vlc_object_find( p_this,
86
                                          VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
Gildas Bazin's avatar
 
Gildas Bazin committed
87

88
            if( p_playlist )
89 90
            {
                vlc_object_detach( p_vout );
91
                vlc_object_attach( p_vout, p_playlist );
92

93
                vlc_object_release( p_playlist );
94 95 96
            }
            else
            {
97
                msg_Dbg( p_this, "cannot find playlist destroying vout" );
98 99 100
                vlc_object_detach( p_vout );
                vout_Destroy( p_vout );
            }
101 102 103 104 105 106 107 108 109 110 111 112 113 114 115
        }
        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 )
        {
116
            vlc_object_t *p_playlist;
Gildas Bazin's avatar
 
Gildas Bazin committed
117

118 119 120
            p_playlist = vlc_object_find( p_this,
                                          VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
            if( p_playlist )
Gildas Bazin's avatar
 
Gildas Bazin committed
121
            {
122 123
                p_vout = vlc_object_find( p_playlist,
                                          VLC_OBJECT_VOUT, FIND_CHILD );
124
                /* only first children of p_input for unused vout */
125
                if( p_vout && p_vout->p_parent != p_playlist )
126 127 128 129
                {
                    vlc_object_release( p_vout );
                    p_vout = NULL;
                }
130
                vlc_object_release( p_playlist );
Gildas Bazin's avatar
 
Gildas Bazin committed
131
            }
132 133 134 135 136 137
        }
    }

    /* If we now have a video output, check it has the right properties */
    if( p_vout )
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163
        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
164
            if( psz_filter_chain ) free( psz_filter_chain );
Gildas Bazin's avatar
 
Gildas Bazin committed
165 166
        }

167 168
        if( ( p_vout->render.i_width != i_width ) ||
            ( p_vout->render.i_height != i_height ) ||
Gildas Bazin's avatar
 
Gildas Bazin committed
169
            ( p_vout->render.i_chroma != i_chroma ) ||
170 171
            ( p_vout->render.i_aspect != i_aspect
                    && !p_vout->b_override_aspect ) ||
Gildas Bazin's avatar
 
Gildas Bazin committed
172
            p_vout->b_filter_change )
173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200
        {
            /* 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
201
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
202 203
 * This function creates a new video output thread, and returns a pointer
 * to its description. On error, it returns NULL.
204
 *****************************************************************************/
205 206 207
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
208
{
Gildas Bazin's avatar
 
Gildas Bazin committed
209 210 211 212
    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
213
    vlc_value_t      val, text;
Michel Kaempf's avatar
Michel Kaempf committed
214

215
    /* Allocate descriptor */
216
    p_vout = vlc_object_create( p_parent, VLC_OBJECT_VOUT );
217
    if( p_vout == NULL )
Michel Kaempf's avatar
Michel Kaempf committed
218
    {
219
        msg_Err( p_parent, "out of memory" );
220
        return NULL;
Michel Kaempf's avatar
Michel Kaempf committed
221
    }
222

Gildas Bazin's avatar
 
Gildas Bazin committed
223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274
    /* Initialize pictures and subpictures - translation tables and functions
     * will be initialized later in InitThread */
    for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES; i_index++)
    {
        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;
    }

    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;

    /* 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
275
    p_vout->i_alignment  = 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
276 277 278 279 280 281 282 283 284 285 286
    p_vout->render_time  = 10;
    p_vout->c_fps_samples = 0;
    p_vout->b_filter_change = 0;

    /* 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 );

287 288 289 290
    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
291 292 293 294 295 296 297 298 299 300 301 302 303
    /* 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 );

    /* Create a few object variables we'll need later on */
    var_Create( p_vout, "aspect-ratio", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
    var_Create( p_vout, "width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
    var_Create( p_vout, "height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
    var_Create( p_vout, "zoom", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
Gildas Bazin's avatar
 
Gildas Bazin committed
304
    var_Create( p_vout, "align", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
Gildas Bazin's avatar
 
Gildas Bazin committed
305

306 307
    p_vout->b_override_aspect = VLC_FALSE;

Gildas Bazin's avatar
 
Gildas Bazin committed
308 309 310
    /* 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
311
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
312
        var_Get( p_vout, "aspect-ratio", &val );
313 314

        /* Check whether the user tried to override aspect ratio */
Gildas Bazin's avatar
 
Gildas Bazin committed
315
        if( val.psz_string )
316 317
        {
            unsigned int i_new_aspect = i_aspect;
Gildas Bazin's avatar
 
Gildas Bazin committed
318
            char *psz_parser = strchr( val.psz_string, ':' );
319 320 321 322

            if( psz_parser )
            {
                *psz_parser++ = '\0';
Gildas Bazin's avatar
 
Gildas Bazin committed
323 324
                i_new_aspect = atoi( val.psz_string ) * VOUT_ASPECT_FACTOR
                                                      / atoi( psz_parser );
325 326 327 328
            }
            else
            {
                i_new_aspect = i_width * VOUT_ASPECT_FACTOR
Gildas Bazin's avatar
 
Gildas Bazin committed
329
                                       * atof( val.psz_string )
330 331 332
                                       / i_height;
            }

Gildas Bazin's avatar
 
Gildas Bazin committed
333
            free( val.psz_string );
334 335 336 337 338 339 340 341

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

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

Gildas Bazin's avatar
 
Gildas Bazin committed
342
                p_vout->render.i_aspect = i_new_aspect;
343 344

                p_vout->b_override_aspect = VLC_TRUE;
345 346 347 348
            }
        }

        /* Look for the default filter configuration */
Gildas Bazin's avatar
 
Gildas Bazin committed
349 350 351
        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
352 353 354 355 356 357 358 359 360 361 362 363 364
    }
    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
365
    if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
Gildas Bazin's avatar
 
Gildas Bazin committed
366
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
367 368 369
        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
370 371 372 373 374 375 376 377 378 379 380 381
    }
    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
382 383
    }

Gildas Bazin's avatar
 
Gildas Bazin committed
384 385 386 387
    /* 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
388
    /* Create the vout thread */
Gildas Bazin's avatar
 
Gildas Bazin committed
389
    p_vout->p_module = module_Need( p_vout,
Gildas Bazin's avatar
 
Gildas Bazin committed
390 391
                           ( p_vout->psz_filter_chain &&
                               *p_vout->psz_filter_chain ) ?
392 393
                           "video filter" : "video output",
                           psz_plugin );
Sam Hocevar's avatar
 
Sam Hocevar committed
394

Gildas Bazin's avatar
 
Gildas Bazin committed
395
    if( psz_plugin ) free( psz_plugin );
Sam Hocevar's avatar
 
Sam Hocevar committed
396 397
    if( p_vout->p_module == NULL )
    {
398 399
        msg_Err( p_vout, "no suitable vout module" );
        vlc_object_destroy( p_vout );
400
        return NULL;
Sam Hocevar's avatar
 
Sam Hocevar committed
401
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
402

403 404
    p_vout->p_text_renderer_module = module_Need( p_vout, "text renderer",
                                                  NULL );
405 406
    if( p_vout->p_text_renderer_module == NULL )
    {
407 408
        msg_Warn( p_vout, "no suitable text renderer module" );
        p_vout->pf_add_string = NULL;
409
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
410

Gildas Bazin's avatar
 
Gildas Bazin committed
411 412 413 414
    /* Create a few object variables for interface interaction */
    var_Create( p_vout, "fullscreen", VLC_VAR_BOOL );
    text.psz_string = _("Fullscreen");
    var_Change( p_vout, "fullscreen", VLC_VAR_SETTEXT, &text, NULL );
Gildas Bazin's avatar
 
Gildas Bazin committed
415 416 417 418 419 420
    var_Change( p_vout, "fullscreen", VLC_VAR_INHERITVALUE, &val, NULL );
    if( val.b_bool )
    {
        /* user requested fullscreen */
        p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
421 422
    var_AddCallback( p_vout, "fullscreen", FullscreenCallback, NULL );

Gildas Bazin's avatar
 
Gildas Bazin committed
423 424 425 426 427 428 429 430 431 432 433 434 435 436 437
    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
438 439 440
    if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
    {
        var_Set( p_vout, "deinterlace", val );
Gildas Bazin's avatar
 
Gildas Bazin committed
441
        if( val.psz_string ) free( val.psz_string );
Gildas Bazin's avatar
 
Gildas Bazin committed
442
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
443 444
    var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );

445 446 447 448 449

    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
450
    if( val.psz_string )
451 452
    {
        var_Set( p_vout, "filter", val );
Gildas Bazin's avatar
 
Gildas Bazin committed
453
        free( val.psz_string );
454 455 456
    }
    var_AddCallback( p_vout, "filter", FilterCallback, NULL );

Gildas Bazin's avatar
 
Gildas Bazin committed
457 458
    /* Calculate delay created by internal caching */
    p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
Gildas Bazin's avatar
 
Gildas Bazin committed
459
                                           VLC_OBJECT_INPUT, FIND_ANYWHERE );
Gildas Bazin's avatar
 
Gildas Bazin committed
460 461
    if( p_input_thread )
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
462
        p_vout->i_pts_delay = p_input_thread->i_pts_delay;
Gildas Bazin's avatar
 
Gildas Bazin committed
463 464 465 466
        vlc_object_release( p_input_thread );
    }
    else
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
467
        p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
Gildas Bazin's avatar
 
Gildas Bazin committed
468 469
    }

470
    if( vlc_thread_create( p_vout, "video output", RunThread,
Gildas Bazin's avatar
 
Gildas Bazin committed
471
                           VLC_THREAD_PRIORITY_OUTPUT, VLC_TRUE ) )
Michel Kaempf's avatar
Michel Kaempf committed
472
    {
473
        msg_Err( p_vout, "out of memory" );
474
        module_Unneed( p_vout, p_vout->p_module );
475 476
        vlc_object_destroy( p_vout );
        return NULL;
477
    }
Michel Kaempf's avatar
Michel Kaempf committed
478

479
    return p_vout;
Michel Kaempf's avatar
Michel Kaempf committed
480 481
}

482
/*****************************************************************************
483
 * vout_Destroy: destroys a previously created video output
484 485
 *****************************************************************************
 * Destroy a terminated thread.
Michel Kaempf's avatar
Michel Kaempf committed
486
 * The function will request a destruction of the specified thread. If pi_error
487
 * is NULL, it will return once the thread is destroyed. Else, it will be
Michel Kaempf's avatar
Michel Kaempf committed
488
 * update using one of the THREAD_* constants.
489
 *****************************************************************************/
490
void vout_Destroy( vout_thread_t *p_vout )
491 492 493
{ 
    vlc_object_t *p_playlist;
    
Michel Kaempf's avatar
Michel Kaempf committed
494
    /* Request thread destruction */
495
    p_vout->b_die = VLC_TRUE;
496
    vlc_thread_join( p_vout );
Michel Kaempf's avatar
Michel Kaempf committed
497

498 499
    var_Destroy( p_vout, "intf-change" );

500 501 502
    p_playlist = vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST, 
                                  FIND_ANYWHERE );

Gildas Bazin's avatar
 
Gildas Bazin committed
503 504
    if( p_vout->psz_filter_chain ) free( p_vout->psz_filter_chain );

505
    /* Free structure */
506
    vlc_object_destroy( p_vout );
507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524

    /* If it was the last vout, tell the interface to show up */
    if( p_playlist != NULL )
    {
        vout_thread_t *p_another_vout = vlc_object_find( p_playlist, 
                                            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
525 526
}

527
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
528
 * InitThread: initialize video output thread
529
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
530 531 532
 * 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.
533
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
534
static int InitThread( vout_thread_t *p_vout )
Vincent Seguin's avatar
Vincent Seguin committed
535
{
Sam Hocevar's avatar
 
Sam Hocevar committed
536
    int i, i_pgcd;
Sam Hocevar's avatar
 
Sam Hocevar committed
537

Sam Hocevar's avatar
 
Sam Hocevar committed
538 539 540 541
    vlc_mutex_lock( &p_vout->change_lock );

#ifdef STATS
    p_vout->c_loops = 0;
Vincent Seguin's avatar
Vincent Seguin committed
542 543
#endif

Sam Hocevar's avatar
 
Sam Hocevar committed
544
    /* Initialize output method, it allocates direct buffers for us */
Sam Hocevar's avatar
 
Sam Hocevar committed
545
    if( p_vout->pf_init( p_vout ) )
Vincent Seguin's avatar
Vincent Seguin committed
546
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
547
        vlc_mutex_unlock( &p_vout->change_lock );
548
        return VLC_EGENERIC;
Sam Hocevar's avatar
 
Sam Hocevar committed
549 550
    }

Sam Hocevar's avatar
 
Sam Hocevar committed
551
    if( !I_OUTPUTPICTURES )
Sam Hocevar's avatar
 
Sam Hocevar committed
552
    {
553 554
        msg_Err( p_vout, "plugin was unable to allocate at least "
                         "one direct buffer" );
Sam Hocevar's avatar
 
Sam Hocevar committed
555
        p_vout->pf_end( p_vout );
Sam Hocevar's avatar
 
Sam Hocevar committed
556
        vlc_mutex_unlock( &p_vout->change_lock );
557
        return VLC_EGENERIC;
558
    }
Vincent Seguin's avatar
Vincent Seguin committed
559

Gildas Bazin's avatar
 
Gildas Bazin committed
560 561 562 563 564 565 566 567 568
    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;
    }

569
    msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
Sam Hocevar's avatar
 
Sam Hocevar committed
570

571
#if 0
572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591
    if( !p_vout->psz_filter_chain )
    {
        char *psz_aspect = config_GetPsz( p_vout, "pixel-ratio" );

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

            if( i_new_aspect && i_new_aspect != p_vout->output.i_aspect )
            {
                int i_pgcd = ReduceHeight( i_new_aspect );
                msg_Dbg( p_vout, "output ratio forced to %i:%i\n",
                         i_new_aspect / i_pgcd, VOUT_ASPECT_FACTOR / i_pgcd );
                p_vout->output.i_aspect = i_new_aspect;
            }
        }
    }
592
#endif
593

Sam Hocevar's avatar
 
Sam Hocevar committed
594
    i_pgcd = ReduceHeight( p_vout->render.i_aspect );
595 596 597 598 599
    msg_Dbg( p_vout,
             "picture in %ix%i, chroma 0x%.8x (%4.4s), aspect ratio %i:%i",
             p_vout->render.i_width, p_vout->render.i_height,
             p_vout->render.i_chroma, (char*)&p_vout->render.i_chroma,
             p_vout->render.i_aspect / i_pgcd, VOUT_ASPECT_FACTOR / i_pgcd );
Sam Hocevar's avatar
 
Sam Hocevar committed
600 601

    i_pgcd = ReduceHeight( p_vout->output.i_aspect );
602 603 604 605 606
    msg_Dbg( p_vout,
             "picture out %ix%i, chroma 0x%.8x (%4.4s), aspect ratio %i:%i",
             p_vout->output.i_width, p_vout->output.i_height,
             p_vout->output.i_chroma, (char*)&p_vout->output.i_chroma,
             p_vout->output.i_aspect / i_pgcd, VOUT_ASPECT_FACTOR / i_pgcd );
Sam Hocevar's avatar
 
Sam Hocevar committed
607

Sam Hocevar's avatar
 
Sam Hocevar committed
608 609 610 611 612 613 614 615
    /* 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
616
    /* Check whether we managed to create direct buffers similar to
617
     * the render buffers, ie same size and chroma */
Sam Hocevar's avatar
 
Sam Hocevar committed
618 619
    if( ( p_vout->output.i_width == p_vout->render.i_width )
     && ( p_vout->output.i_height == p_vout->render.i_height )
620
     && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
Sam Hocevar's avatar
 
Sam Hocevar committed
621
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
622 623 624 625
        /* 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
626 627
        p_vout->b_direct = 1;

Sam Hocevar's avatar
 
Sam Hocevar committed
628 629
        for( i = 1; i < VOUT_MAX_PICTURES; i++ )
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
630 631 632 633 634 635 636 637
            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
638 639 640
            PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
            I_RENDERPICTURES++;
        }
Gildas Bazin's avatar
 
Gildas Bazin committed
641 642 643 644

        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
645 646 647
    }
    else
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
648 649 650
        /* 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
651 652
        p_vout->b_direct = 0;

Sam Hocevar's avatar
 
Sam Hocevar committed
653
        /* Choose the best module */
654
        p_vout->chroma.p_module = module_Need( p_vout, "chroma", NULL );
Sam Hocevar's avatar
 
Sam Hocevar committed
655

Sam Hocevar's avatar
 
Sam Hocevar committed
656 657
        if( p_vout->chroma.p_module == NULL )
        {
658
            msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
659 660
                     (char*)&p_vout->render.i_chroma,
                     (char*)&p_vout->output.i_chroma );
Sam Hocevar's avatar
 
Sam Hocevar committed
661 662
            p_vout->pf_end( p_vout );
            vlc_mutex_unlock( &p_vout->change_lock );
663
            return VLC_EGENERIC;
Sam Hocevar's avatar
 
Sam Hocevar committed
664
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
665

Gildas Bazin's avatar
 
Gildas Bazin committed
666 667 668 669
        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
670 671

        /* Append render buffers after the direct buffers */
Sam Hocevar's avatar
 
Sam Hocevar committed
672
        for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
Sam Hocevar's avatar
 
Sam Hocevar committed
673 674 675
        {
            PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
            I_RENDERPICTURES++;
Gildas Bazin's avatar
 
Gildas Bazin committed
676 677 678 679

            /* Check if we have enough render pictures */
            if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
                break;
Sam Hocevar's avatar
 
Sam Hocevar committed
680 681
        }
    }
Vincent Seguin's avatar
Vincent Seguin committed
682

Sam Hocevar's avatar
 
Sam Hocevar committed
683 684 685 686 687 688 689 690 691 692 693
    /* 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;
    }

694
/* XXX XXX mark thread ready */
695
    return VLC_SUCCESS;
Vincent Seguin's avatar
Vincent Seguin committed
696 697
}

698
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
699
 * RunThread: video output thread
700
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
701 702 703
 * 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.
704
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
705
static void RunThread( vout_thread_t *p_vout)
Vincent Seguin's avatar
Vincent Seguin committed
706
{
Sam Hocevar's avatar
 
Sam Hocevar committed
707
    int             i_index;                                /* index in heap */
708
    int             i_idle_loops = 0;  /* loops without displaying a picture */
Sam Hocevar's avatar
 
Sam Hocevar committed
709 710 711 712
    mtime_t         current_date;                            /* current date */
    mtime_t         display_date;                            /* display date */

    picture_t *     p_picture;                            /* picture pointer */
713
    picture_t *     p_last_picture = NULL;                   /* last picture */
Sam Hocevar's avatar
 
Sam Hocevar committed
714 715 716 717 718 719 720 721
    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
722 723 724 725

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

Sam Hocevar's avatar
 
Sam Hocevar committed
726 727 728
    if( p_vout->b_error )
    {
        /* Destroy thread structures allocated by Create and InitThread */
729
        DestroyThread( p_vout );
Sam Hocevar's avatar
 
Sam Hocevar committed
730 731
        return;
    }
732

733
    /*
Sam Hocevar's avatar
 
Sam Hocevar committed
734 735
     * Main loop - it is not executed if an error occured during
     * initialization
736
     */
Sam Hocevar's avatar
 
Sam Hocevar committed
737
    while( (!p_vout->b_die) && (!p_vout->b_error) )
738
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
739
        /* Initialize loop variables */
740
        p_picture = NULL;
Sam Hocevar's avatar
 
Sam Hocevar committed
741 742
        display_date = 0;
        current_date = mdate();
Sam Hocevar's avatar
 
Sam Hocevar committed
743

744
#if 0
Sam Hocevar's avatar
 
Sam Hocevar committed
745 746
        p_vout->c_loops++;
        if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
747
        {
748 749
            msg_Dbg( p_vout, "picture heap: %d/%d",
                     I_RENDERPICTURES, p_vout->i_heap_size );
Sam Hocevar's avatar
 
Sam Hocevar committed
750
        }
751
#endif
Sam Hocevar's avatar
 
Sam Hocevar committed
752 753

        /*
754 755 756
         * Find the picture to display (the one with the earliest date).
         * This operation does not need lock, since only READY_PICTUREs
         * are handled. */
757
        for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
Sam Hocevar's avatar
 
Sam Hocevar committed
758
        {
Sam Hocevar's avatar
 
Sam Hocevar committed
759 760 761
            if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
                && ( (p_picture == NULL) ||
                     (PP_RENDERPICTURE[i_index]->date < display_date) ) )
762
            {
Sam Hocevar's avatar
 
Sam Hocevar committed
763
                p_picture = PP_RENDERPICTURE[i_index];
Sam Hocevar's avatar
 
Sam Hocevar committed
764
                display_date = p_picture->date;
765 766
            }
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
767

768
        if( p_picture )
769
        {
770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785
            /* 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;
                    }
                }
            }
786

787 788 789 790 791 792 793 794 795 796 797 798 799 800
            /* 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 );
801
                p_last_picture = NULL;
802 803
            }

Sam Hocevar's avatar
 
Sam Hocevar committed
804 805 806 807
            /* Compute FPS rate */
            p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
                = display_date;

808
            if( !p_picture->b_force &&
809
                p_picture != p_last_picture &&
810
                display_date < current_date + p_vout->render_time )
Sam Hocevar's avatar
 
Sam Hocevar committed
811 812 813 814 815 816 817 818 819 820 821 822 823 824
            {
                /* 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
825
                    p_vout->i_heap_size--;
Sam Hocevar's avatar
 
Sam Hocevar committed
826
                }
Gildas Bazin's avatar
 
Gildas Bazin committed
827
                msg_Warn( p_vout, "late picture skipped ("I64Fd")",
828
                                  current_date - display_date );
829 830 831 832
                vlc_mutex_unlock( &p_vout->picture_lock );

                continue;
            }
833

Gildas Bazin's avatar
 
Gildas Bazin committed
834
            if( display_date >
835
                current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
836 837 838 839 840 841 842 843 844 845 846 847 848 849 850
            {
                /* 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--;
                }
851
                msg_Warn( p_vout, "vout warning: early picture skipped "
Gildas Bazin's avatar
 
Gildas Bazin committed
852 853
                          "("I64Fd")", display_date - current_date
                          - p_vout->i_pts_delay );
Sam Hocevar's avatar
 
Sam Hocevar committed
854 855 856 857
                vlc_mutex_unlock( &p_vout->picture_lock );

                continue;
            }
858

859
            if( display_date > current_date + VOUT_DISPLAY_DELAY )
Sam Hocevar's avatar
 
Sam Hocevar committed
860 861 862 863 864 865 866 867
            {
                /* 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;
            }
868 869
            else if( p_picture == p_last_picture )
            {
870 871
                /* We are asked to repeat the previous picture, but we first
                 * wait for a couple of idle loops */
872 873 874 875 876 877 878
                if( i_idle_loops < 4 )
                {
                    p_picture    = NULL;
                    display_date = 0;
                }
                else
                {
879 880 881
                    /* 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;
882 883 884 885 886 887 888
                }
            }
        }

        if( p_picture == NULL )
        {
            i_idle_loops++;
889 890
        }

Sam Hocevar's avatar
 
Sam Hocevar committed
891 892 893 894
        /*
         * Check for subpictures to display
         */
        p_subpic = vout_SortSubPictures( p_vout, display_date );
895

Sam Hocevar's avatar
 
Sam Hocevar committed
896 897 898 899 900
        /*
         * Perform rendering
         */
        p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );

Sam Hocevar's avatar
 
Sam Hocevar committed
901
        /*
902
         * Call the plugin-specific rendering method if there is one
Sam Hocevar's avatar
 
Sam Hocevar committed
903
         */
Gildas Bazin's avatar
 
Gildas Bazin committed
904
        if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
Sam Hocevar's avatar
 
Sam Hocevar committed
905 906 907 908 909
        {
            /* Render the direct buffer returned by vout_RenderPicture */
            p_vout->pf_render( p_vout, p_directbuffer );
        }

Sam Hocevar's avatar
 
Sam Hocevar committed
910 911 912
        /*
         * Sleep, wake up
         */
Gildas Bazin's avatar
 
Gildas Bazin committed
913
        if( display_date != 0 && p_directbuffer != NULL )
914
        {
915 916 917 918 919 920 921 922 923 924 925
            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;
            }
926 927
        }

Sam Hocevar's avatar
 
Sam Hocevar committed
928 929 930 931
        /* 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
932
        if( display_date != 0 )
933
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
934 935 936 937 938 939
            /* 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 );
            }
940 941 942
        }
        else
        {
Sam Hocevar's avatar
 
Sam Hocevar committed
943
            msleep( VOUT_IDLE_SLEEP );
944
        }
945

Sam Hocevar's avatar
 
Sam Hocevar committed
946 947 948 949 950 951 952
        /* 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
953
        if( p_picture != NULL && p_directbuffer != NULL )
Sam Hocevar's avatar
 
Sam Hocevar committed
954 955
        {
            /* Display the direct buffer returned by vout_RenderPicture */
956 957 958 959
            if( p_vout->pf_display )
            {
                p_vout->pf_display( p_vout, p_directbuffer );
            }
Vincent Seguin's avatar
Vincent Seguin committed
960

961 962 963 964 965 966 967
            /* 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
968
        }
Vincent Seguin's avatar
Vincent Seguin committed
969

Sam Hocevar's avatar
 
Sam Hocevar committed
970 971 972
        /*
         * Check events and manage thread
         */
973
        if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
Sam Hocevar's avatar
 
Sam Hocevar committed
974
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
975 976 977
            /* 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
978 979
            p_vout->b_error = 1;
        }
Gildas Bazin's avatar
 
Gildas Bazin committed
980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997

        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 ) )
            {
998
                msg_Err( p_vout, "cannot resize display" );
999
                /* FIXME: pf_end will be called again in EndThread() */
Gildas Bazin's avatar
 
Gildas Bazin committed
1000 1001 1002 1003
                p_vout->b_error = 1;
            }

            /* Need to reinitialise the chroma plugin */
1004 1005 1006 1007 1008 1009
            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
1010
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
1011
    }
Vincent Seguin's avatar
Vincent Seguin committed
1012

Sam Hocevar's avatar
 
Sam Hocevar committed
1013 1014 1015 1016
    /*
     * Error loop - wait until the thread destruction is requested
     */
    if( p_vout->b_error )
1017
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
1018
        ErrorThread( p_vout );
1019
    }
Michel Kaempf's avatar
Michel Kaempf committed
1020

Sam Hocevar's avatar
 
Sam Hocevar committed
1021 1022 1023 1024
    /* End of thread */
    EndThread( p_vout );

    /* Destroy thread structures allocated by CreateThread */
1025
    DestroyThread( p_vout );
Michel Kaempf's avatar
Michel Kaempf committed
1026 1027
}

1028
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1029
 * ErrorThread: RunThread() error loop
1030
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1031 1032 1033
 * 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.
1034
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
1035
static void ErrorThread( vout_thread_t *p_vout )
1036
{
Sam Hocevar's avatar
 
Sam Hocevar committed
1037 1038
    /* Wait until a `die' order */
    while( !p_vout->b_die )
1039
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
1040 1041
        /* Sleep a while */
        msleep( VOUT_IDLE_SLEEP );
1042
    }
1043 1044
}

1045
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1046
 * EndThread: thread destruction
1047
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1048 1049
 * This function is called when the thread ends after a sucessful
 * initialization. It frees all ressources allocated by InitThread.
1050
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
1051
static void EndThread( vout_thread_t *p_vout )
Michel Kaempf's avatar
Michel Kaempf committed
1052
{
Sam Hocevar's avatar
 
Sam Hocevar committed
1053
    int     i_index;                                        /* index in heap */
Michel Kaempf's avatar
Michel Kaempf committed
1054

Sam Hocevar's avatar
 
Sam Hocevar committed
1055
#ifdef STATS
Vincent Seguin's avatar
Vincent Seguin committed
1056
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
1057 1058
        struct tms cpu_usage;
        times( &cpu_usage );
Michel Kaempf's avatar
Michel Kaempf committed
1059

1060 1061
        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
1062
    }
Sam Hocevar's avatar
 
Sam Hocevar committed
1063
#endif
Michel Kaempf's avatar
Michel Kaempf committed
1064

Sam Hocevar's avatar
 
Sam Hocevar committed
1065 1066
    if( !p_vout->b_direct )
    {
1067
        module_Unneed( p_vout, p_vout->chroma.p_module );
Sam Hocevar's avatar
 
Sam Hocevar committed
1068
    }
1069
    
Sam Hocevar's avatar
 
Sam Hocevar committed
1070
    /* Destroy all remaining pictures */
Sam Hocevar's avatar
 
Sam Hocevar committed
1071
    for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES; i_index++ )
Vincent Seguin's avatar
Vincent Seguin committed
1072
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
1073
        if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
Michel Kaempf's avatar
Michel Kaempf committed
1074
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
1075
            free( p_vout->p_picture[i_index].p_data_orig );
Michel Kaempf's avatar
Michel Kaempf committed
1076
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
1077
    }
Michel Kaempf's avatar
Michel Kaempf committed
1078

Sam Hocevar's avatar
 
Sam Hocevar committed
1079 1080 1081 1082
    /* 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
1083
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
1084 1085
            vout_DestroySubPicture( p_vout,
                                    &p_vout->p_subpicture[i_index] );
Vincent Seguin's avatar
Vincent Seguin committed
1086
        }
Michel Kaempf's avatar
Michel Kaempf committed
1087
    }
1088

Gildas Bazin's avatar
 
Gildas Bazin committed
1089 1090
    if( p_vout->p_text_renderer_module )
        module_Unneed( p_vout, p_vout->p_text_renderer_module );
1091
    
Sam Hocevar's avatar
 
Sam Hocevar committed
1092 1093 1094 1095 1096
    /* Destroy translation tables */
    p_vout->pf_end( p_vout );

    /* Release the change lock */
    vlc_mutex_unlock( &p_vout->change_lock );
Michel Kaempf's avatar
Michel Kaempf committed
1097 1098
}

1099
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1100
 * DestroyThread: thread destruction
1101
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1102 1103
 * This function is called when the thread ends. It frees all ressources
 * allocated by CreateThread. Status is available at this stage.
1104
 *****************************************************************************/
1105
static void DestroyThread( vout_thread_t *p_vout )
Michel Kaempf's avatar
Michel Kaempf committed
1106
{
Sam Hocevar's avatar
 
Sam Hocevar committed
1107 1108 1109 1110
    /* Destroy the locks */
    vlc_mutex_destroy( &p_vout->picture_lock );
    vlc_mutex_destroy( &p_vout->subpicture_lock );
    vlc_mutex_destroy( &p_vout->change_lock );
1111

Sam Hocevar's avatar
 
Sam Hocevar committed
1112
    /* Release the module */
1113
    module_Unneed( p_vout, p_vout->p_module );
1114 1115
}

Sam Hocevar's avatar
 
Sam Hocevar committed
1116 1117
/* following functions are local */

Sam Hocevar's avatar
 
Sam Hocevar committed
1118 1119 1120 1121 1122
static int ReduceHeight( int i_ratio )
{
    int i_dummy = VOUT_ASPECT_FACTOR;
    int i_pgcd  = 1;
 
Sam Hocevar's avatar
 
Sam Hocevar committed
1123 1124 1125 1126 1127
    if( !i_ratio )
    {
        return i_pgcd;
    }

Sam Hocevar's avatar
 
Sam Hocevar committed
1128 1129 1130 1131 1132 1133 1134 1135
    /* VOUT_ASPECT_FACTOR is (2^7 * 3^3 * 5^3), we just check for 2, 3 and 5 */
    while( !(i_ratio & 1) && !(i_dummy & 1) )
    {
        i_ratio >>= 1;
        i_dummy >>= 1;
        i_pgcd  <<= 1;
    }

1136
    while( !(i_ratio % 3) && !(i_dummy % 3) )
Sam Hocevar's avatar
 
Sam Hocevar committed
1137 1138 1139 1140 1141 1142
    {
        i_ratio /= 3;
        i_dummy /= 3;
        i_pgcd  *= 3;
    }

1143
    while( !(i_ratio % 5) && !(i_dummy % 5) )
Sam Hocevar's avatar
 
Sam Hocevar committed
1144 1145 1146 1147 1148 1149 1150 1151 1152
    {
        i_ratio /= 5;
        i_dummy /= 5;
        i_pgcd  *= 5;
    }

    return i_pgcd;
}

Sam Hocevar's avatar
 
Sam Hocevar committed
1153 1154 1155 1156 1157 1158
/*****************************************************************************
 * BinaryLog: computes the base 2 log of a binary value
 *****************************************************************************
 * This functions is used by MaskToShift, to get a bit index from a binary
 * value.
 *****************************************************************************/
1159
static int BinaryLog( uint32_t i )
Sam Hocevar's avatar
 
Sam Hocevar committed
1160 1161 1162
{
    int i_log = 0;

1163
    if( i == 0 ) return -31337;
Sam Hocevar's avatar<