video_output.c 47.6 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 1.237 2003/10/05 23:03:35 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 * );
Gildas Bazin's avatar
 
Gildas Bazin committed
65

66
/*****************************************************************************
67 68 69 70 71 72 73 74 75 76 77
 * 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
78
        /* Reattach video output to input before bailing out */
79 80
        if( p_vout )
        {
81
            vlc_object_t *p_playlist;
82

83
            p_playlist = vlc_object_find( p_this,
84
                                          VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
Gildas Bazin's avatar
 
Gildas Bazin committed
85

86
            if( p_playlist )
87 88
            {
                vlc_object_detach( p_vout );
89
                vlc_object_attach( p_vout, p_playlist );
90

91
                vlc_object_release( p_playlist );
92 93 94
            }
            else
            {
95
                msg_Dbg( p_this, "cannot find playlist destroying vout" );
96 97 98
                vlc_object_detach( p_vout );
                vout_Destroy( p_vout );
            }
99 100 101 102 103 104 105 106 107 108 109 110 111 112 113
        }
        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 )
        {
114
            vlc_object_t *p_playlist;
Gildas Bazin's avatar
 
Gildas Bazin committed
115

116 117 118
            p_playlist = vlc_object_find( p_this,
                                          VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
            if( p_playlist )
Gildas Bazin's avatar
 
Gildas Bazin committed
119
            {
120 121
                p_vout = vlc_object_find( p_playlist,
                                          VLC_OBJECT_VOUT, FIND_CHILD );
122
                /* only first children of p_input for unused vout */
123
                if( p_vout && p_vout->p_parent != p_playlist )
124 125 126 127
                {
                    vlc_object_release( p_vout );
                    p_vout = NULL;
                }
128
                vlc_object_release( p_playlist );
Gildas Bazin's avatar
 
Gildas Bazin committed
129
            }
130 131 132 133 134 135
        }
    }

    /* If we now have a video output, check it has the right properties */
    if( p_vout )
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161
        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
162
            if( psz_filter_chain ) free( psz_filter_chain );
Gildas Bazin's avatar
 
Gildas Bazin committed
163 164
        }

165 166
        if( ( p_vout->render.i_width != i_width ) ||
            ( p_vout->render.i_height != i_height ) ||
Gildas Bazin's avatar
 
Gildas Bazin committed
167
            ( p_vout->render.i_chroma != i_chroma ) ||
168 169
            ( p_vout->render.i_aspect != i_aspect
                    && !p_vout->b_override_aspect ) ||
Gildas Bazin's avatar
 
Gildas Bazin committed
170
            p_vout->b_filter_change )
171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198
        {
            /* 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
199
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
200 201
 * This function creates a new video output thread, and returns a pointer
 * to its description. On error, it returns NULL.
202
 *****************************************************************************/
203 204 205
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
206
{
Gildas Bazin's avatar
 
Gildas Bazin committed
207 208 209 210
    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
211
    vlc_value_t      val, text;
Michel Kaempf's avatar
Michel Kaempf committed
212

213
    /* Allocate descriptor */
214
    p_vout = vlc_object_create( p_parent, VLC_OBJECT_VOUT );
215
    if( p_vout == NULL )
Michel Kaempf's avatar
Michel Kaempf committed
216
    {
217
        msg_Err( p_parent, "out of memory" );
218
        return NULL;
Michel Kaempf's avatar
Michel Kaempf committed
219
    }
220

Gildas Bazin's avatar
 
Gildas Bazin committed
221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272
    /* 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
273
    p_vout->i_alignment  = 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
274 275 276 277 278 279 280 281 282 283 284 285
    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 );
    var_Create( p_vout, "key-pressed", VLC_VAR_STRING );

286 287 288 289
    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
290 291 292 293 294 295 296 297 298 299 300 301 302
    /* 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
303
    var_Create( p_vout, "align", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
Gildas Bazin's avatar
 
Gildas Bazin committed
304

305 306
    p_vout->b_override_aspect = VLC_FALSE;

Gildas Bazin's avatar
 
Gildas Bazin committed
307 308 309
    /* 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
310
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
311
        var_Get( p_vout, "aspect-ratio", &val );
312 313

        /* Check whether the user tried to override aspect ratio */
Gildas Bazin's avatar
 
Gildas Bazin committed
314
        if( val.psz_string )
315 316
        {
            unsigned int i_new_aspect = i_aspect;
Gildas Bazin's avatar
 
Gildas Bazin committed
317
            char *psz_parser = strchr( val.psz_string, ':' );
318 319 320 321

            if( psz_parser )
            {
                *psz_parser++ = '\0';
Gildas Bazin's avatar
 
Gildas Bazin committed
322 323
                i_new_aspect = atoi( val.psz_string ) * VOUT_ASPECT_FACTOR
                                                      / atoi( psz_parser );
324 325 326 327
            }
            else
            {
                i_new_aspect = i_width * VOUT_ASPECT_FACTOR
Gildas Bazin's avatar
 
Gildas Bazin committed
328
                                       * atof( val.psz_string )
329 330 331
                                       / i_height;
            }

Gildas Bazin's avatar
 
Gildas Bazin committed
332
            free( val.psz_string );
333 334 335 336 337 338 339 340

            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
341
                p_vout->render.i_aspect = i_new_aspect;
342 343

                p_vout->b_override_aspect = VLC_TRUE;
344 345 346 347
            }
        }

        /* Look for the default filter configuration */
Gildas Bazin's avatar
 
Gildas Bazin committed
348 349 350
        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
351 352 353 354 355 356 357 358 359 360 361 362 363
    }
    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
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
366 367 368
        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
369 370 371 372 373 374 375 376 377 378 379 380
    }
    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
381 382
    }

Gildas Bazin's avatar
 
Gildas Bazin committed
383 384 385 386
    /* 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
387
    /* Create the vout thread */
Gildas Bazin's avatar
 
Gildas Bazin committed
388
    p_vout->p_module = module_Need( p_vout,
Gildas Bazin's avatar
 
Gildas Bazin committed
389 390
                           ( p_vout->psz_filter_chain &&
                               *p_vout->psz_filter_chain ) ?
391 392
                           "video filter" : "video output",
                           psz_plugin );
Sam Hocevar's avatar
 
Sam Hocevar committed
393

Gildas Bazin's avatar
 
Gildas Bazin committed
394
    if( psz_plugin ) free( psz_plugin );
Sam Hocevar's avatar
 
Sam Hocevar committed
395 396
    if( p_vout->p_module == NULL )
    {
397 398
        msg_Err( p_vout, "no suitable vout module" );
        vlc_object_destroy( p_vout );
399
        return NULL;
Sam Hocevar's avatar
 
Sam Hocevar committed
400
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
401

402 403 404 405 406 407 408
    p_vout->p_text_renderer_module = module_Need( p_vout, "text renderer", 
						  NULL );
    if( p_vout->p_text_renderer_module == NULL )
    {
	msg_Warn( p_vout, "no suitable text renderer module" );
	p_vout->pf_add_string = NULL;
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
409

Gildas Bazin's avatar
 
Gildas Bazin committed
410 411 412 413
    /* 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
414 415 416 417 418 419
    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
420 421
    var_AddCallback( p_vout, "fullscreen", FullscreenCallback, NULL );

Gildas Bazin's avatar
 
Gildas Bazin committed
422 423 424 425 426 427 428 429 430 431 432 433 434 435 436
    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
437 438 439 440
    if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
    {
        var_Set( p_vout, "deinterlace", val );
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
441 442
    var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );

Gildas Bazin's avatar
 
Gildas Bazin committed
443 444
    /* Calculate delay created by internal caching */
    p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
Gildas Bazin's avatar
 
Gildas Bazin committed
445
                                           VLC_OBJECT_INPUT, FIND_ANYWHERE );
Gildas Bazin's avatar
 
Gildas Bazin committed
446 447
    if( p_input_thread )
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
448
        p_vout->i_pts_delay = p_input_thread->i_pts_delay;
Gildas Bazin's avatar
 
Gildas Bazin committed
449 450 451 452
        vlc_object_release( p_input_thread );
    }
    else
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
453
        p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
Gildas Bazin's avatar
 
Gildas Bazin committed
454 455
    }

456
    if( vlc_thread_create( p_vout, "video output", RunThread,
Gildas Bazin's avatar
 
Gildas Bazin committed
457
                           VLC_THREAD_PRIORITY_OUTPUT, VLC_TRUE ) )
Michel Kaempf's avatar
Michel Kaempf committed
458
    {
459
        msg_Err( p_vout, "out of memory" );
460
        module_Unneed( p_vout, p_vout->p_module );
461 462
        vlc_object_destroy( p_vout );
        return NULL;
463
    }
Michel Kaempf's avatar
Michel Kaempf committed
464

465
    return p_vout;
Michel Kaempf's avatar
Michel Kaempf committed
466 467
}

468
/*****************************************************************************
469
 * vout_Destroy: destroys a previously created video output
470 471
 *****************************************************************************
 * Destroy a terminated thread.
Michel Kaempf's avatar
Michel Kaempf committed
472
 * The function will request a destruction of the specified thread. If pi_error
473
 * is NULL, it will return once the thread is destroyed. Else, it will be
Michel Kaempf's avatar
Michel Kaempf committed
474
 * update using one of the THREAD_* constants.
475
 *****************************************************************************/
476
void vout_Destroy( vout_thread_t *p_vout )
477 478 479
{ 
    vlc_object_t *p_playlist;
    
Michel Kaempf's avatar
Michel Kaempf committed
480
    /* Request thread destruction */
481
    p_vout->b_die = VLC_TRUE;
482
    vlc_thread_join( p_vout );
Michel Kaempf's avatar
Michel Kaempf committed
483

484 485
    var_Destroy( p_vout, "intf-change" );

486 487 488
    p_playlist = vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST, 
                                  FIND_ANYWHERE );

489
    /* Free structure */
490
    vlc_object_destroy( p_vout );
491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508

    /* 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
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
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
518
static int InitThread( vout_thread_t *p_vout )
Vincent Seguin's avatar
Vincent Seguin committed
519
{
Sam Hocevar's avatar
 
Sam Hocevar committed
520
    int i, i_pgcd;
Sam Hocevar's avatar
 
Sam Hocevar committed
521

Sam Hocevar's avatar
 
Sam Hocevar committed
522 523 524 525
    vlc_mutex_lock( &p_vout->change_lock );

#ifdef STATS
    p_vout->c_loops = 0;
Vincent Seguin's avatar
Vincent Seguin committed
526 527
#endif

Sam Hocevar's avatar
 
Sam Hocevar committed
528
    /* Initialize output method, it allocates direct buffers for us */
Sam Hocevar's avatar
 
Sam Hocevar committed
529
    if( p_vout->pf_init( p_vout ) )
Vincent Seguin's avatar
Vincent Seguin committed
530
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
531
        vlc_mutex_unlock( &p_vout->change_lock );
532
        return VLC_EGENERIC;
Sam Hocevar's avatar
 
Sam Hocevar committed
533 534
    }

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 );
Sam Hocevar's avatar
 
Sam Hocevar committed
540
        vlc_mutex_unlock( &p_vout->change_lock );
541
        return VLC_EGENERIC;
542
    }
Vincent Seguin's avatar
Vincent Seguin committed
543

Gildas Bazin's avatar
 
Gildas Bazin committed
544 545 546 547 548 549 550 551 552
    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;
    }

553
    msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
Sam Hocevar's avatar
 
Sam Hocevar committed
554

555
#if 0
556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575
    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;
            }
        }
    }
576
#endif
577

Sam Hocevar's avatar
 
Sam Hocevar committed
578
    i_pgcd = ReduceHeight( p_vout->render.i_aspect );
579 580 581 582 583
    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
584 585

    i_pgcd = ReduceHeight( p_vout->output.i_aspect );
586 587 588 589 590
    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
591

Sam Hocevar's avatar
 
Sam Hocevar committed
592 593 594 595 596 597 598 599
    /* 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
600
    /* Check whether we managed to create direct buffers similar to
601
     * the render buffers, ie same size and chroma */
Sam Hocevar's avatar
 
Sam Hocevar committed
602 603
    if( ( p_vout->output.i_width == p_vout->render.i_width )
     && ( p_vout->output.i_height == p_vout->render.i_height )
604
     && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
Sam Hocevar's avatar
 
Sam Hocevar committed
605
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
606 607 608 609
        /* 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
610 611
        p_vout->b_direct = 1;

Sam Hocevar's avatar
 
Sam Hocevar committed
612 613
        for( i = 1; i < VOUT_MAX_PICTURES; i++ )
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
614 615 616 617 618 619 620 621
            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
622 623 624
            PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
            I_RENDERPICTURES++;
        }
Gildas Bazin's avatar
 
Gildas Bazin committed
625 626 627 628

        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
629 630 631
    }
    else
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
632 633 634
        /* 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
635 636
        p_vout->b_direct = 0;

Sam Hocevar's avatar
 
Sam Hocevar committed
637
        /* Choose the best module */
638
        p_vout->chroma.p_module = module_Need( p_vout, "chroma", NULL );
Sam Hocevar's avatar
 
Sam Hocevar committed
639

Sam Hocevar's avatar
 
Sam Hocevar committed
640 641
        if( p_vout->chroma.p_module == NULL )
        {
642
            msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
643 644
                     (char*)&p_vout->render.i_chroma,
                     (char*)&p_vout->output.i_chroma );
Sam Hocevar's avatar
 
Sam Hocevar committed
645 646
            p_vout->pf_end( p_vout );
            vlc_mutex_unlock( &p_vout->change_lock );
647
            return VLC_EGENERIC;
Sam Hocevar's avatar
 
Sam Hocevar committed
648
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
649

Gildas Bazin's avatar
 
Gildas Bazin committed
650 651 652 653
        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
654 655

        /* Append render buffers after the direct buffers */
Sam Hocevar's avatar
 
Sam Hocevar committed
656
        for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
Sam Hocevar's avatar
 
Sam Hocevar committed
657 658 659
        {
            PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
            I_RENDERPICTURES++;
Gildas Bazin's avatar
 
Gildas Bazin committed
660 661 662 663

            /* Check if we have enough render pictures */
            if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
                break;
Sam Hocevar's avatar
 
Sam Hocevar committed
664 665
        }
    }
Vincent Seguin's avatar
Vincent Seguin committed
666

Sam Hocevar's avatar
 
Sam Hocevar committed
667 668 669 670 671 672 673 674 675 676 677
    /* 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;
    }

678
/* XXX XXX mark thread ready */
679
    return VLC_SUCCESS;
Vincent Seguin's avatar
Vincent Seguin committed
680 681
}

682
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
683
 * RunThread: video output thread
684
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
685 686 687
 * 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.
688
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
689
static void RunThread( vout_thread_t *p_vout)
Vincent Seguin's avatar
Vincent Seguin committed
690
{
Sam Hocevar's avatar
 
Sam Hocevar committed
691
    int             i_index;                                /* index in heap */
692
    int             i_idle_loops = 0;  /* loops without displaying a picture */
Sam Hocevar's avatar
 
Sam Hocevar committed
693 694 695 696
    mtime_t         current_date;                            /* current date */
    mtime_t         display_date;                            /* display date */

    picture_t *     p_picture;                            /* picture pointer */
697
    picture_t *     p_last_picture = NULL;                   /* last picture */
Sam Hocevar's avatar
 
Sam Hocevar committed
698 699 700 701 702 703 704 705
    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
706 707 708 709

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

Sam Hocevar's avatar
 
Sam Hocevar committed
710 711 712
    if( p_vout->b_error )
    {
        /* Destroy thread structures allocated by Create and InitThread */
713
        DestroyThread( p_vout );
Sam Hocevar's avatar
 
Sam Hocevar committed
714 715
        return;
    }
716

717
    /*
Sam Hocevar's avatar
 
Sam Hocevar committed
718 719
     * Main loop - it is not executed if an error occured during
     * initialization
720
     */
Sam Hocevar's avatar
 
Sam Hocevar committed
721
    while( (!p_vout->b_die) && (!p_vout->b_error) )
722
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
723
        /* Initialize loop variables */
724
        p_picture = NULL;
Sam Hocevar's avatar
 
Sam Hocevar committed
725 726
        display_date = 0;
        current_date = mdate();
Sam Hocevar's avatar
 
Sam Hocevar committed
727

728
#if 0
Sam Hocevar's avatar
 
Sam Hocevar committed
729 730
        p_vout->c_loops++;
        if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
731
        {
732 733
            msg_Dbg( p_vout, "picture heap: %d/%d",
                     I_RENDERPICTURES, p_vout->i_heap_size );
Sam Hocevar's avatar
 
Sam Hocevar committed
734
        }
735
#endif
Sam Hocevar's avatar
 
Sam Hocevar committed
736 737

        /*
738 739 740
         * Find the picture to display (the one with the earliest date).
         * This operation does not need lock, since only READY_PICTUREs
         * are handled. */
741
        for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
Sam Hocevar's avatar
 
Sam Hocevar committed
742
        {
Sam Hocevar's avatar
 
Sam Hocevar committed
743 744 745
            if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
                && ( (p_picture == NULL) ||
                     (PP_RENDERPICTURE[i_index]->date < display_date) ) )
746
            {
Sam Hocevar's avatar
 
Sam Hocevar committed
747
                p_picture = PP_RENDERPICTURE[i_index];
Sam Hocevar's avatar
 
Sam Hocevar committed
748
                display_date = p_picture->date;
749 750
            }
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
751

752
        if( p_picture )
753
        {
754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769
            /* 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;
                    }
                }
            }
770

771 772 773 774 775 776 777 778 779 780 781 782 783 784
            /* 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 );
785
                p_last_picture = NULL;
786 787
            }

Sam Hocevar's avatar
 
Sam Hocevar committed
788 789 790 791
            /* Compute FPS rate */
            p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
                = display_date;

792
            if( !p_picture->b_force &&
793
                p_picture != p_last_picture &&
794
                display_date < current_date + p_vout->render_time )
Sam Hocevar's avatar
 
Sam Hocevar committed
795 796 797 798 799 800 801 802 803 804 805 806 807 808
            {
                /* 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
809
                    p_vout->i_heap_size--;
Sam Hocevar's avatar
 
Sam Hocevar committed
810
                }
Gildas Bazin's avatar
 
Gildas Bazin committed
811
                msg_Warn( p_vout, "late picture skipped ("I64Fd")",
812
                                  current_date - display_date );
813 814 815 816
                vlc_mutex_unlock( &p_vout->picture_lock );

                continue;
            }
817

Gildas Bazin's avatar
 
Gildas Bazin committed
818
            if( display_date >
819
                current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
820 821 822 823 824 825 826 827 828 829 830 831 832 833 834
            {
                /* 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--;
                }
835
                msg_Warn( p_vout, "vout warning: early picture skipped "
Gildas Bazin's avatar
 
Gildas Bazin committed
836 837
                          "("I64Fd")", display_date - current_date
                          - p_vout->i_pts_delay );
Sam Hocevar's avatar
 
Sam Hocevar committed
838 839 840 841
                vlc_mutex_unlock( &p_vout->picture_lock );

                continue;
            }
842

843
            if( display_date > current_date + VOUT_DISPLAY_DELAY )
Sam Hocevar's avatar
 
Sam Hocevar committed
844 845 846 847 848 849 850 851
            {
                /* 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;
            }
852 853
            else if( p_picture == p_last_picture )
            {
854 855
                /* We are asked to repeat the previous picture, but we first
                 * wait for a couple of idle loops */
856 857 858 859 860 861 862
                if( i_idle_loops < 4 )
                {
                    p_picture    = NULL;
                    display_date = 0;
                }
                else
                {
863 864 865
                    /* 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;
866 867 868 869 870 871 872
                }
            }
        }

        if( p_picture == NULL )
        {
            i_idle_loops++;
873 874
        }

Sam Hocevar's avatar
 
Sam Hocevar committed
875 876 877 878
        /*
         * Check for subpictures to display
         */
        p_subpic = vout_SortSubPictures( p_vout, display_date );
879

Sam Hocevar's avatar
 
Sam Hocevar committed
880 881 882 883 884
        /*
         * Perform rendering
         */
        p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );

Sam Hocevar's avatar
 
Sam Hocevar committed
885
        /*
886
         * Call the plugin-specific rendering method if there is one
Sam Hocevar's avatar
 
Sam Hocevar committed
887
         */
Gildas Bazin's avatar
 
Gildas Bazin committed
888
        if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
Sam Hocevar's avatar
 
Sam Hocevar committed
889 890 891 892 893
        {
            /* Render the direct buffer returned by vout_RenderPicture */
            p_vout->pf_render( p_vout, p_directbuffer );
        }

Sam Hocevar's avatar
 
Sam Hocevar committed
894 895 896
        /*
         * Sleep, wake up
         */
Gildas Bazin's avatar
 
Gildas Bazin committed
897
        if( display_date != 0 && p_directbuffer != NULL )
898
        {
899 900 901 902 903 904 905 906 907 908 909
            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;
            }
910 911
        }

Sam Hocevar's avatar
 
Sam Hocevar committed
912 913 914 915
        /* 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
916
        if( display_date != 0 )
917
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
918 919 920 921 922 923
            /* 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 );
            }
924 925 926
        }
        else
        {
Sam Hocevar's avatar
 
Sam Hocevar committed
927
            msleep( VOUT_IDLE_SLEEP );
928
        }
929

Sam Hocevar's avatar
 
Sam Hocevar committed
930 931 932 933 934 935 936
        /* 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
937
        if( p_picture != NULL && p_directbuffer != NULL )
Sam Hocevar's avatar
 
Sam Hocevar committed
938 939
        {
            /* Display the direct buffer returned by vout_RenderPicture */
940 941 942 943
            if( p_vout->pf_display )
            {
                p_vout->pf_display( p_vout, p_directbuffer );
            }
Vincent Seguin's avatar
Vincent Seguin committed
944

945 946 947 948 949 950 951
            /* 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
952
        }
Vincent Seguin's avatar
Vincent Seguin committed
953

Sam Hocevar's avatar
 
Sam Hocevar committed
954 955 956
        /*
         * Check events and manage thread
         */
957
        if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
Sam Hocevar's avatar
 
Sam Hocevar committed
958
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
959 960 961
            /* 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
962 963
            p_vout->b_error = 1;
        }
Gildas Bazin's avatar
 
Gildas Bazin committed
964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981

        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 ) )
            {
982
                msg_Err( p_vout, "cannot resize display" );
983
                /* FIXME: pf_end will be called again in EndThread() */
Gildas Bazin's avatar
 
Gildas Bazin committed
984 985 986 987
                p_vout->b_error = 1;
            }

            /* Need to reinitialise the chroma plugin */
988 989 990 991 992 993
            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
994
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
995
    }
Vincent Seguin's avatar
Vincent Seguin committed
996

Sam Hocevar's avatar
 
Sam Hocevar committed
997 998 999 1000
    /*
     * Error loop - wait until the thread destruction is requested
     */
    if( p_vout->b_error )
1001
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
1002
        ErrorThread( p_vout );
1003
    }
Michel Kaempf's avatar
Michel Kaempf committed
1004

Sam Hocevar's avatar
 
Sam Hocevar committed
1005 1006 1007 1008
    /* End of thread */
    EndThread( p_vout );

    /* Destroy thread structures allocated by CreateThread */
1009
    DestroyThread( p_vout );
Michel Kaempf's avatar
Michel Kaempf committed
1010 1011
}

1012
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1013
 * ErrorThread: RunThread() error loop
1014
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1015 1016 1017
 * 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.
1018
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
1019
static void ErrorThread( vout_thread_t *p_vout )
1020
{
Sam Hocevar's avatar
 
Sam Hocevar committed
1021 1022
    /* Wait until a `die' order */
    while( !p_vout->b_die )
1023
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
1024 1025
        /* Sleep a while */
        msleep( VOUT_IDLE_SLEEP );
1026
    }
1027 1028
}

1029
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1030
 * EndThread: thread destruction
1031
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1032 1033
 * This function is called when the thread ends after a sucessful
 * initialization. It frees all ressources allocated by InitThread.
1034
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
1035
static void EndThread( vout_thread_t *p_vout )
Michel Kaempf's avatar
Michel Kaempf committed
1036
{
Sam Hocevar's avatar
 
Sam Hocevar committed
1037
    int     i_index;                                        /* index in heap */
Michel Kaempf's avatar
Michel Kaempf committed
1038

Sam Hocevar's avatar
 
Sam Hocevar committed
1039
#ifdef STATS
Vincent Seguin's avatar
Vincent Seguin committed
1040
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
1041 1042
        struct tms cpu_usage;
        times( &cpu_usage );
Michel Kaempf's avatar
Michel Kaempf committed
1043

1044 1045
        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
1046
    }
Sam Hocevar's avatar
 
Sam Hocevar committed
1047
#endif
Michel Kaempf's avatar
Michel Kaempf committed
1048

Sam Hocevar's avatar
 
Sam Hocevar committed
1049 1050
    if( !p_vout->b_direct )
    {
1051
        module_Unneed( p_vout, p_vout->chroma.p_module );
Sam Hocevar's avatar
 
Sam Hocevar committed
1052
    }
1053
    
Sam Hocevar's avatar
 
Sam Hocevar committed
1054
    /* Destroy all remaining pictures */
Sam Hocevar's avatar
 
Sam Hocevar committed
1055
    for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES; i_index++ )
Vincent Seguin's avatar
Vincent Seguin committed
1056
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
1057
        if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
Michel Kaempf's avatar
Michel Kaempf committed
1058
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
1059
            free( p_vout->p_picture[i_index].p_data_orig );
Michel Kaempf's avatar
Michel Kaempf committed
1060
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
1061
    }
Michel Kaempf's avatar
Michel Kaempf committed
1062

Sam Hocevar's avatar
 
Sam Hocevar committed
1063 1064 1065 1066
    /* 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
1067
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
1068 1069
            vout_DestroySubPicture( p_vout,
                                    &p_vout->p_subpicture[i_index] );
Vincent Seguin's avatar
Vincent Seguin committed
1070
        }
Michel Kaempf's avatar
Michel Kaempf committed
1071
    }
1072

Gildas Bazin's avatar
 
Gildas Bazin committed
1073 1074
    if( p_vout->p_text_renderer_module )
        module_Unneed( p_vout, p_vout->p_text_renderer_module );
1075
    
Sam Hocevar's avatar
 
Sam Hocevar committed
1076 1077 1078 1079 1080
    /* 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
1081 1082
}

1083
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1084
 * DestroyThread: thread destruction
1085
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1086 1087
 * This function is called when the thread ends. It frees all ressources
 * allocated by CreateThread. Status is available at this stage.
1088
 *****************************************************************************/
1089
static void DestroyThread( vout_thread_t *p_vout )
Michel Kaempf's avatar
Michel Kaempf committed
1090
{
Sam Hocevar's avatar
 
Sam Hocevar committed
1091 1092 1093 1094
    /* Destroy the locks */
    vlc_mutex_destroy( &p_vout->picture_lock );
    vlc_mutex_destroy( &p_vout->subpicture_lock );
    vlc_mutex_destroy( &p_vout->change_lock );
1095

Sam Hocevar's avatar
 
Sam Hocevar committed
1096
    /* Release the module */
1097
    module_Unneed( p_vout, p_vout->p_module );
1098 1099
}

Sam Hocevar's avatar
 
Sam Hocevar committed
1100 1101
/* following functions are local */

Sam Hocevar's avatar
 
Sam Hocevar committed
1102 1103 1104 1105 1106
static int ReduceHeight( int i_ratio )
{
    int i_dummy = VOUT_ASPECT_FACTOR;
    int i_pgcd  = 1;
 
Sam Hocevar's avatar
 
Sam Hocevar committed
1107 1108 1109 1110 1111
    if( !i_ratio )
    {
        return i_pgcd;
    }

Sam Hocevar's avatar
 
Sam Hocevar committed
1112 1113 1114 1115 1116 1117 1118 1119
    /* 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;
    }

1120
    while( !(i_ratio % 3) && !(i_dummy % 3) )
Sam Hocevar's avatar
 
Sam Hocevar committed
1121 1122 1123 1124 1125 1126
    {
        i_ratio /= 3;
        i_dummy /= 3;
        i_pgcd  *= 3;
    }

1127
    while( !(i_ratio % 5) && !(i_dummy % 5) )
Sam Hocevar's avatar
 
Sam Hocevar committed
1128 1129 1130 1131 1132 1133 1134 1135 1136
    {
        i_ratio /= 5;
        i_dummy /= 5;
        i_pgcd  *= 5;
    }

    return i_pgcd;
}

Sam Hocevar's avatar
 
Sam Hocevar committed
1137 1138 1139 1140 1141 1142
/*****************************************************************************
 * 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.
 *****************************************************************************/
1143
static int BinaryLog( uint32_t i )
Sam Hocevar's avatar
 
Sam Hocevar committed
1144 1145 1146
{
    int i_log = 0;

1147
    if( i == 0 ) return -31337;
Sam Hocevar's avatar
 
Sam Hocevar committed
1148

1149 1150 1151 1152 1153
    if( i & 0xffff0000 ) i_log += 16;
    if( i & 0xff00ff00 ) i_log += 8;
    if( i & 0xf0f0f0f0 ) i_log += 4;
    if( i & 0xcccccccc ) i_log += 2;
    if( i & 0xaaaaaaaa ) i_log += 1;
Sam Hocevar's avatar
 
Sam Hocevar committed
1154

1155
    return i_log;
Sam Hocevar's avatar
 
Sam Hocevar committed
1156 1157 1158 1159 1160 1161 1162
}

/*****************************************************************************
 * MaskToShift: transform a color mask into right and left shifts
 *****************************************************************************
 * This function is used for obtaining color shifts from masks.
 *****************************************************************************/
1163
static void MaskToShift( int *pi_left, int *pi_right, uint32_t i_mask )
Sam Hocevar's avatar
 
Sam Hocevar committed
1164
{
1165
    uint32_t i_low, i_high;            /* lower hand higher bits of the mask */
Sam Hocevar's avatar
 
Sam Hocevar committed
1166 1167 1168 1169 1170 1171 1172 1173

    if( !i_mask )
    {
        *pi_left = *pi_right = 0;
        return;
    }

    /* Get bits */
1174
    i_low =  i_mask & (- (int32_t)i_mask);          /* lower bit of the mask */
Sam Hocevar's avatar