video_output.c 48 KB
Newer Older
1
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
2
 * video_output.c : video output thread
3
 *
Michel Kaempf's avatar
Michel Kaempf committed
4 5
 * This module describes the programming interface for video output threads.
 * It includes functions allowing to open a new thread, send pictures to a
6 7
 * thread, and destroy a previously oppened video output thread.
 *****************************************************************************
Clément Stenac's avatar
Clément Stenac committed
8
 * Copyright (C) 2000-2004 VideoLAN
Gildas Bazin's avatar
Gildas Bazin committed
9
 * $Id$
10
 *
Sam Hocevar's avatar
 
Sam Hocevar committed
11
 * Authors: Vincent Seguin <seguin@via.ecp.fr>
12 13 14 15 16
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
Sam Hocevar's avatar
Sam Hocevar committed
17
 *
18 19
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 21
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
22
 *
23 24 25
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
26
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
27

28
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
29
 * Preamble
30
 *****************************************************************************/
31
#include <stdlib.h>                                                /* free() */
Vincent Seguin's avatar
Vincent Seguin committed
32

33
#include <vlc/vlc.h>
Sam Hocevar's avatar
 
Sam Hocevar committed
34

35 36
#ifdef HAVE_SYS_TIMES_H
#   include <sys/times.h>
37
#endif
38

39
#include "vlc_video.h"
Michel Kaempf's avatar
Michel Kaempf committed
40
#include "video_output.h"
41
#include "vlc_spu.h"
Gildas Bazin's avatar
 
Gildas Bazin committed
42
#include <vlc/input.h>                 /* for input_thread_t and i_pts_delay */
43

44 45 46 47
#if defined( SYS_DARWIN )
#include "darwin_specific.h"
#endif

48
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
49
 * Local prototypes
50
 *****************************************************************************/
51 52 53 54 55
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
56

57
static void     AspectRatio       ( int, int *, int * );
58 59
static int      BinaryLog         ( uint32_t );
static void     MaskToShift       ( int *, int *, uint32_t );
Gildas Bazin's avatar
 
Gildas Bazin committed
60
static void     InitWindowSize    ( vout_thread_t *, int *, int * );
Michel Kaempf's avatar
Michel Kaempf committed
61

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

68
/*****************************************************************************
69 70 71 72 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 86
            p_playlist = vlc_object_find( p_this, VLC_OBJECT_PLAYLIST,
                                          FIND_ANYWHERE );
Gildas Bazin's avatar
 
Gildas Bazin committed
87

88
            if( p_playlist )
89
            {
90
                spu_Attach( p_vout->p_spu, p_this, VLC_FALSE );
91
                vlc_object_detach( p_vout );
92
                vlc_object_attach( p_vout, p_playlist );
93

94
                vlc_object_release( p_playlist );
95 96 97
            }
            else
            {
Clément Stenac's avatar
Clément Stenac committed
98
                msg_Dbg( p_this, "cannot find playlist, destroying vout" );
99 100 101
                vlc_object_detach( p_vout );
                vout_Destroy( p_vout );
            }
102 103 104 105 106 107 108 109 110 111 112 113 114 115 116
        }
        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 )
        {
117
            vlc_object_t *p_playlist;
Gildas Bazin's avatar
 
Gildas Bazin committed
118

119 120 121
            p_playlist = vlc_object_find( p_this,
                                          VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
            if( p_playlist )
Gildas Bazin's avatar
 
Gildas Bazin committed
122
            {
123 124
                p_vout = vlc_object_find( p_playlist,
                                          VLC_OBJECT_VOUT, FIND_CHILD );
125
                /* only first children of p_input for unused vout */
126
                if( p_vout && p_vout->p_parent != p_playlist )
127 128 129 130
                {
                    vlc_object_release( p_vout );
                    p_vout = NULL;
                }
131
                vlc_object_release( p_playlist );
Gildas Bazin's avatar
 
Gildas Bazin committed
132
            }
133 134 135 136 137 138
        }
    }

    /* If we now have a video output, check it has the right properties */
    if( p_vout )
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
139
        char *psz_filter_chain;
140
        vlc_value_t val;
Gildas Bazin's avatar
 
Gildas Bazin committed
141 142 143 144 145

        /* We don't directly check for the "filter" variable for obvious
         * performance reasons. */
        if( p_vout->b_filter_change )
        {
146
            var_Get( p_vout, "filter", &val );
147
            psz_filter_chain = val.psz_string;
Gildas Bazin's avatar
 
Gildas Bazin committed
148 149 150 151 152 153 154 155 156 157 158 159

            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;
            }

160
            if( !psz_filter_chain && !p_vout->psz_filter_chain )
Gildas Bazin's avatar
 
Gildas Bazin committed
161 162 163 164
            {
                p_vout->b_filter_change = VLC_FALSE;
            }

Gildas Bazin's avatar
 
Gildas Bazin committed
165
            if( psz_filter_chain ) free( psz_filter_chain );
Gildas Bazin's avatar
 
Gildas Bazin committed
166 167
        }

168 169
        if( ( p_vout->render.i_width != i_width ) ||
            ( p_vout->render.i_height != i_height ) ||
Gildas Bazin's avatar
 
Gildas Bazin committed
170
            ( p_vout->render.i_chroma != i_chroma ) ||
171 172
            ( p_vout->render.i_aspect != i_aspect
                    && !p_vout->b_override_aspect ) ||
Gildas Bazin's avatar
 
Gildas Bazin committed
173
            p_vout->b_filter_change )
174 175 176 177 178 179 180 181 182 183 184
        {
            /* 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 );
185
            spu_Attach( p_vout->p_spu, p_this, VLC_TRUE );
186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202
            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
203
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
204 205
 * This function creates a new video output thread, and returns a pointer
 * to its description. On error, it returns NULL.
206
 *****************************************************************************/
207 208 209
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
210
{
Gildas Bazin's avatar
 
Gildas Bazin committed
211 212 213 214
    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
215
    vlc_value_t      val, text;
Michel Kaempf's avatar
Michel Kaempf committed
216

217
    /* Allocate descriptor */
218
    p_vout = vlc_object_create( p_parent, VLC_OBJECT_VOUT );
219
    if( p_vout == NULL )
Michel Kaempf's avatar
Michel Kaempf committed
220
    {
221
        msg_Err( p_parent, "out of memory" );
222
        return NULL;
Michel Kaempf's avatar
Michel Kaempf committed
223
    }
224

225
    /* Initialize pictures - translation tables and functions
Gildas Bazin's avatar
 
Gildas Bazin committed
226
     * will be initialized later in InitThread */
227
    for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++)
Gildas Bazin's avatar
 
Gildas Bazin committed
228 229 230 231 232
    {
        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;
233
        p_vout->p_picture[i_index].b_slow   = 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
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
    }

    /* 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
272
    p_vout->i_alignment  = 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
273 274 275
    p_vout->render_time  = 10;
    p_vout->c_fps_samples = 0;
    p_vout->b_filter_change = 0;
276
    p_vout->pf_control = 0;
277
    p_vout->p_parent_intf = 0;
Gildas Bazin's avatar
 
Gildas Bazin committed
278 279 280 281 282

    /* Initialize locks */
    vlc_mutex_init( p_vout, &p_vout->picture_lock );
    vlc_mutex_init( p_vout, &p_vout->change_lock );

283 284 285 286 287 288 289
    /* 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 );

290
    /* Initialize subpicture unit */
291
    p_vout->p_spu = spu_Create( p_vout );
292
    spu_Attach( p_vout->p_spu, p_parent, VLC_TRUE );
293

Gildas Bazin's avatar
 
Gildas Bazin committed
294 295 296
    /* Attach the new object now so we can use var inheritance below */
    vlc_object_attach( p_vout, p_parent );

297 298
    spu_Init( p_vout->p_spu );

299 300
    /* Take care of some "interface/control" related initialisations */
    vout_IntfInit( p_vout );
Gildas Bazin's avatar
 
Gildas Bazin committed
301

302 303
    p_vout->b_override_aspect = VLC_FALSE;

Gildas Bazin's avatar
 
Gildas Bazin committed
304 305 306
    /* 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
307
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
308
        var_Get( p_vout, "aspect-ratio", &val );
309 310

        /* Check whether the user tried to override aspect ratio */
Gildas Bazin's avatar
 
Gildas Bazin committed
311
        if( val.psz_string )
312 313
        {
            unsigned int i_new_aspect = i_aspect;
Gildas Bazin's avatar
 
Gildas Bazin committed
314
            char *psz_parser = strchr( val.psz_string, ':' );
315 316 317 318

            if( psz_parser )
            {
                *psz_parser++ = '\0';
Gildas Bazin's avatar
 
Gildas Bazin committed
319 320
                i_new_aspect = atoi( val.psz_string ) * VOUT_ASPECT_FACTOR
                                                      / atoi( psz_parser );
321 322 323 324
            }
            else
            {
                i_new_aspect = i_width * VOUT_ASPECT_FACTOR
Gildas Bazin's avatar
 
Gildas Bazin committed
325
                                       * atof( val.psz_string )
326 327 328
                                       / i_height;
            }

Gildas Bazin's avatar
 
Gildas Bazin committed
329
            free( val.psz_string );
330 331 332

            if( i_new_aspect && i_new_aspect != i_aspect )
            {
333
                int i_aspect_x, i_aspect_y;
Clément Stenac's avatar
Clément Stenac committed
334

335
                AspectRatio( i_new_aspect, &i_aspect_x, &i_aspect_y );
336 337

                msg_Dbg( p_vout, "overriding source aspect ratio to %i:%i",
338
                         i_aspect_x, i_aspect_y );
339

Gildas Bazin's avatar
 
Gildas Bazin committed
340
                p_vout->render.i_aspect = i_new_aspect;
341 342

                p_vout->b_override_aspect = VLC_TRUE;
343 344 345 346
            }
        }

        /* Look for the default filter configuration */
Gildas Bazin's avatar
 
Gildas Bazin committed
347 348 349
        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
350 351 352 353 354 355
    }
    else
    {
        /* continue the parent's filter chain */
        char *psz_end;

Clément Stenac's avatar
Clément Stenac committed
356
        psz_end = strchr( ((vout_thread_t *)p_parent)->psz_filter_chain, ',' );
Gildas Bazin's avatar
 
Gildas Bazin committed
357 358 359 360 361 362
        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
363
    if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
Gildas Bazin's avatar
 
Gildas Bazin committed
364
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
365 366 367
        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
368 369 370 371 372 373 374
    }
    else
    {
        /* the filter chain is a string list of filters separated by double
         * colons */
        char *psz_end;

Clément Stenac's avatar
Clément Stenac committed
375
        psz_end = strchr( p_vout->psz_filter_chain, ',' );
Gildas Bazin's avatar
 
Gildas Bazin committed
376 377 378 379
        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
380 381
    }

Gildas Bazin's avatar
 
Gildas Bazin committed
382 383 384 385
    /* 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
386
    /* Create the vout thread */
Gildas Bazin's avatar
 
Gildas Bazin committed
387
    p_vout->p_module = module_Need( p_vout,
Gildas Bazin's avatar
 
Gildas Bazin committed
388 389
        ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ?
        "video filter" : "video output", psz_plugin, 0 );
Sam Hocevar's avatar
 
Sam Hocevar committed
390

Gildas Bazin's avatar
 
Gildas Bazin committed
391
    if( psz_plugin ) free( psz_plugin );
Sam Hocevar's avatar
 
Sam Hocevar committed
392 393
    if( p_vout->p_module == NULL )
    {
394
        msg_Err( p_vout, "no suitable vout module" );
395
        vlc_object_detach( p_vout );
396
        vlc_object_destroy( p_vout );
397
        return NULL;
Sam Hocevar's avatar
 
Sam Hocevar committed
398
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
399

Gildas Bazin's avatar
 
Gildas Bazin committed
400
    /* Create a few object variables for interface interaction */
Gildas Bazin's avatar
 
Gildas Bazin committed
401 402 403 404 405 406 407 408 409 410 411 412 413 414 415
    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
416 417 418
    if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
    {
        var_Set( p_vout, "deinterlace", val );
Gildas Bazin's avatar
 
Gildas Bazin committed
419
        if( val.psz_string ) free( val.psz_string );
Gildas Bazin's avatar
 
Gildas Bazin committed
420
    }
Gildas Bazin's avatar
 
Gildas Bazin committed
421 422
    var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );

423

424
    var_Create( p_vout, "filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
425 426 427 428
    text.psz_string = _("Filters");
    var_Change( p_vout, "filter", VLC_VAR_SETTEXT, &text, NULL );
    var_AddCallback( p_vout, "filter", FilterCallback, NULL );

Gildas Bazin's avatar
 
Gildas Bazin committed
429 430
    /* Calculate delay created by internal caching */
    p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
Gildas Bazin's avatar
 
Gildas Bazin committed
431
                                           VLC_OBJECT_INPUT, FIND_ANYWHERE );
Gildas Bazin's avatar
 
Gildas Bazin committed
432 433
    if( p_input_thread )
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
434
        p_vout->i_pts_delay = p_input_thread->i_pts_delay;
Gildas Bazin's avatar
 
Gildas Bazin committed
435 436 437 438
        vlc_object_release( p_input_thread );
    }
    else
    {
Gildas Bazin's avatar
 
Gildas Bazin committed
439
        p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
Gildas Bazin's avatar
 
Gildas Bazin committed
440 441
    }

442
    if( vlc_thread_create( p_vout, "video output", RunThread,
Gildas Bazin's avatar
 
Gildas Bazin committed
443
                           VLC_THREAD_PRIORITY_OUTPUT, VLC_TRUE ) )
Michel Kaempf's avatar
Michel Kaempf committed
444
    {
445
        msg_Err( p_vout, "out of memory" );
446
        module_Unneed( p_vout, p_vout->p_module );
447 448 449 450 451 452 453 454 455 456 457
        vlc_object_detach( p_vout );
        vlc_object_destroy( p_vout );
        return NULL;
    }

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

        /* Make sure the thread is destroyed */
        p_vout->b_die = VLC_TRUE;
458

459 460 461
        vlc_thread_join( p_vout );

        vlc_object_detach( p_vout );
462 463
        vlc_object_destroy( p_vout );
        return NULL;
464
    }
Michel Kaempf's avatar
Michel Kaempf committed
465

466
    return p_vout;
Michel Kaempf's avatar
Michel Kaempf committed
467 468
}

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

Michel Kaempf's avatar
Michel Kaempf committed
481
    /* Request thread destruction */
482
    p_vout->b_die = VLC_TRUE;
483
    vlc_thread_join( p_vout );
Michel Kaempf's avatar
Michel Kaempf committed
484

485 486
    var_Destroy( p_vout, "intf-change" );

Clément Stenac's avatar
Clément Stenac committed
487
    p_playlist = vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
488 489
                                  FIND_ANYWHERE );

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

492
    /* Free structure */
493
    vlc_object_destroy( p_vout );
494 495 496 497

    /* If it was the last vout, tell the interface to show up */
    if( p_playlist != NULL )
    {
Clément Stenac's avatar
Clément Stenac committed
498
        vout_thread_t *p_another_vout = vlc_object_find( p_playlist,
499 500 501 502 503 504 505 506 507 508 509 510 511
                                            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
512 513
}

514
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
515
 * InitThread: initialize video output thread
516
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
517 518 519
 * 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.
520
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
521
static int InitThread( vout_thread_t *p_vout )
Vincent Seguin's avatar
Vincent Seguin committed
522
{
523
    int i, i_aspect_x, i_aspect_y;
Sam Hocevar's avatar
 
Sam Hocevar committed
524

Sam Hocevar's avatar
 
Sam Hocevar committed
525 526 527 528
    vlc_mutex_lock( &p_vout->change_lock );

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

Sam Hocevar's avatar
 
Sam Hocevar committed
531
    /* Initialize output method, it allocates direct buffers for us */
Sam Hocevar's avatar
 
Sam Hocevar committed
532
    if( p_vout->pf_init( p_vout ) )
Vincent Seguin's avatar
Vincent Seguin committed
533
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
534
        vlc_mutex_unlock( &p_vout->change_lock );
535
        return VLC_EGENERIC;
Sam Hocevar's avatar
 
Sam Hocevar committed
536 537
    }

Sam Hocevar's avatar
 
Sam Hocevar committed
538
    if( !I_OUTPUTPICTURES )
Sam Hocevar's avatar
 
Sam Hocevar committed
539
    {
540 541
        msg_Err( p_vout, "plugin was unable to allocate at least "
                         "one direct buffer" );
Sam Hocevar's avatar
 
Sam Hocevar committed
542
        p_vout->pf_end( p_vout );
Sam Hocevar's avatar
 
Sam Hocevar committed
543
        vlc_mutex_unlock( &p_vout->change_lock );
544
        return VLC_EGENERIC;
545
    }
Vincent Seguin's avatar
Vincent Seguin committed
546

Gildas Bazin's avatar
 
Gildas Bazin committed
547 548 549 550 551 552 553 554 555
    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;
    }

556
    msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
Sam Hocevar's avatar
 
Sam Hocevar committed
557

558
    AspectRatio( p_vout->render.i_aspect, &i_aspect_x, &i_aspect_y );
559 560 561 562
    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,
563
             i_aspect_x, i_aspect_y );
Sam Hocevar's avatar
 
Sam Hocevar committed
564

565
    AspectRatio( p_vout->output.i_aspect, &i_aspect_x, &i_aspect_y );
566 567 568 569
    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,
570
             i_aspect_x, i_aspect_y );
Sam Hocevar's avatar
 
Sam Hocevar committed
571

Sam Hocevar's avatar
 
Sam Hocevar committed
572 573 574 575 576 577 578 579
    /* 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
580
    /* Check whether we managed to create direct buffers similar to
581
     * the render buffers, ie same size and chroma */
Sam Hocevar's avatar
 
Sam Hocevar committed
582 583
    if( ( p_vout->output.i_width == p_vout->render.i_width )
     && ( p_vout->output.i_height == p_vout->render.i_height )
584
     && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
Sam Hocevar's avatar
 
Sam Hocevar committed
585
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
586 587 588 589
        /* 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
590 591
        p_vout->b_direct = 1;

Sam Hocevar's avatar
 
Sam Hocevar committed
592 593
        for( i = 1; i < VOUT_MAX_PICTURES; i++ )
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
594 595 596 597 598 599 600 601
            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
602 603 604
            PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
            I_RENDERPICTURES++;
        }
Gildas Bazin's avatar
 
Gildas Bazin committed
605 606 607 608

        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
609 610 611
    }
    else
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
612 613 614
        /* 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
615 616
        p_vout->b_direct = 0;

Sam Hocevar's avatar
 
Sam Hocevar committed
617
        /* Choose the best module */
Gildas Bazin's avatar
 
Gildas Bazin committed
618
        p_vout->chroma.p_module = module_Need( p_vout, "chroma", NULL, 0 );
Sam Hocevar's avatar
 
Sam Hocevar committed
619

Sam Hocevar's avatar
 
Sam Hocevar committed
620 621
        if( p_vout->chroma.p_module == NULL )
        {
622
            msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
623 624
                     (char*)&p_vout->render.i_chroma,
                     (char*)&p_vout->output.i_chroma );
Sam Hocevar's avatar
 
Sam Hocevar committed
625 626
            p_vout->pf_end( p_vout );
            vlc_mutex_unlock( &p_vout->change_lock );
627
            return VLC_EGENERIC;
Sam Hocevar's avatar
 
Sam Hocevar committed
628
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
629

Gildas Bazin's avatar
 
Gildas Bazin committed
630 631 632 633
        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
634 635

        /* Append render buffers after the direct buffers */
Sam Hocevar's avatar
 
Sam Hocevar committed
636
        for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
Sam Hocevar's avatar
 
Sam Hocevar committed
637 638 639
        {
            PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
            I_RENDERPICTURES++;
Gildas Bazin's avatar
 
Gildas Bazin committed
640 641 642 643

            /* Check if we have enough render pictures */
            if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
                break;
Sam Hocevar's avatar
 
Sam Hocevar committed
644 645
        }
    }
Vincent Seguin's avatar
Vincent Seguin committed
646

Sam Hocevar's avatar
 
Sam Hocevar committed
647 648 649 650 651 652 653 654 655 656 657
    /* 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;
    }

658
/* XXX XXX mark thread ready */
659
    return VLC_SUCCESS;
Vincent Seguin's avatar
Vincent Seguin committed
660 661
}

662
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
663
 * RunThread: video output thread
664
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
665 666 667
 * 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.
668
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
669
static void RunThread( vout_thread_t *p_vout)
Vincent Seguin's avatar
Vincent Seguin committed
670
{
Sam Hocevar's avatar
 
Sam Hocevar committed
671
    int             i_index;                                /* index in heap */
672
    int             i_idle_loops = 0;  /* loops without displaying a picture */
Sam Hocevar's avatar
 
Sam Hocevar committed
673 674 675 676
    mtime_t         current_date;                            /* current date */
    mtime_t         display_date;                            /* display date */

    picture_t *     p_picture;                            /* picture pointer */
677
    picture_t *     p_last_picture = NULL;                   /* last picture */
Sam Hocevar's avatar
 
Sam Hocevar committed
678 679 680 681 682 683 684 685
    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
686 687 688 689

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

Sam Hocevar's avatar
 
Sam Hocevar committed
690 691 692
    if( p_vout->b_error )
    {
        /* Destroy thread structures allocated by Create and InitThread */
693
        DestroyThread( p_vout );
Sam Hocevar's avatar
 
Sam Hocevar committed
694 695
        return;
    }
696

697
    /*
Sam Hocevar's avatar
Sam Hocevar committed
698
     * Main loop - it is not executed if an error occurred during
Sam Hocevar's avatar
 
Sam Hocevar committed
699
     * initialization
700
     */
Sam Hocevar's avatar
 
Sam Hocevar committed
701
    while( (!p_vout->b_die) && (!p_vout->b_error) )
702
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
703
        /* Initialize loop variables */
704
        p_picture = NULL;
Sam Hocevar's avatar
 
Sam Hocevar committed
705 706
        display_date = 0;
        current_date = mdate();
Sam Hocevar's avatar
 
Sam Hocevar committed
707

708
#if 0
Sam Hocevar's avatar
 
Sam Hocevar committed
709 710
        p_vout->c_loops++;
        if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
711
        {
712 713
            msg_Dbg( p_vout, "picture heap: %d/%d",
                     I_RENDERPICTURES, p_vout->i_heap_size );
Sam Hocevar's avatar
 
Sam Hocevar committed
714
        }
715
#endif
Sam Hocevar's avatar
 
Sam Hocevar committed
716 717

        /*
718 719 720
         * Find the picture to display (the one with the earliest date).
         * This operation does not need lock, since only READY_PICTUREs
         * are handled. */
721
        for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
Sam Hocevar's avatar
 
Sam Hocevar committed
722
        {
Sam Hocevar's avatar
 
Sam Hocevar committed
723 724 725
            if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
                && ( (p_picture == NULL) ||
                     (PP_RENDERPICTURE[i_index]->date < display_date) ) )
726
            {
Sam Hocevar's avatar
 
Sam Hocevar committed
727
                p_picture = PP_RENDERPICTURE[i_index];
Sam Hocevar's avatar
 
Sam Hocevar committed
728
                display_date = p_picture->date;
729 730
            }
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
731

732
        if( p_picture )
733
        {
734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749
            /* 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;
                    }
                }
            }
750

751 752 753 754 755 756 757 758 759 760 761 762 763 764
            /* 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 );
765
                p_last_picture = NULL;
766 767
            }

Sam Hocevar's avatar
 
Sam Hocevar committed
768 769 770 771
            /* Compute FPS rate */
            p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
                = display_date;

772
            if( !p_picture->b_force &&
773
                p_picture != p_last_picture &&
774
                display_date < current_date + p_vout->render_time )
Sam Hocevar's avatar
 
Sam Hocevar committed
775 776 777 778 779 780 781 782 783 784 785 786 787 788
            {
                /* 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
789
                    p_vout->i_heap_size--;
Sam Hocevar's avatar
 
Sam Hocevar committed
790
                }
Gildas Bazin's avatar
 
Gildas Bazin committed
791
                msg_Warn( p_vout, "late picture skipped ("I64Fd")",
792
                                  current_date - display_date );
793 794 795 796
                vlc_mutex_unlock( &p_vout->picture_lock );

                continue;
            }
797

Gildas Bazin's avatar
 
Gildas Bazin committed
798
            if( display_date >
799
                current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
800 801 802 803 804 805 806 807 808 809 810 811 812 813 814
            {
                /* 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--;
                }
815
                msg_Warn( p_vout, "vout warning: early picture skipped "
Gildas Bazin's avatar
 
Gildas Bazin committed
816 817
                          "("I64Fd")", display_date - current_date
                          - p_vout->i_pts_delay );
Sam Hocevar's avatar
 
Sam Hocevar committed
818 819 820 821
                vlc_mutex_unlock( &p_vout->picture_lock );

                continue;
            }
822

823
            if( display_date > current_date + VOUT_DISPLAY_DELAY )
Sam Hocevar's avatar
 
Sam Hocevar committed
824 825 826 827 828 829 830 831
            {
                /* 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;
            }
832 833
            else if( p_picture == p_last_picture )
            {
834 835
                /* We are asked to repeat the previous picture, but we first
                 * wait for a couple of idle loops */
836 837 838 839 840 841 842
                if( i_idle_loops < 4 )
                {
                    p_picture    = NULL;
                    display_date = 0;
                }
                else
                {
843 844 845
                    /* 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;
846 847 848 849 850 851 852
                }
            }
        }

        if( p_picture == NULL )
        {
            i_idle_loops++;
853 854
        }

Sam Hocevar's avatar
 
Sam Hocevar committed
855 856 857
        /*
         * Check for subpictures to display
         */
858
        p_subpic = spu_SortSubpictures( p_vout->p_spu, display_date );
859

Sam Hocevar's avatar
 
Sam Hocevar committed
860 861 862 863 864
        /*
         * Perform rendering
         */
        p_directbuffer = vout_RenderPicture( p_vout, p_picture, p_subpic );

Sam Hocevar's avatar
 
Sam Hocevar committed
865
        /*
866
         * Call the plugin-specific rendering method if there is one
Sam Hocevar's avatar
 
Sam Hocevar committed
867
         */
Gildas Bazin's avatar
 
Gildas Bazin committed
868
        if( p_picture != NULL && p_directbuffer != NULL && p_vout->pf_render )
Sam Hocevar's avatar
 
Sam Hocevar committed
869 870 871 872 873
        {
            /* Render the direct buffer returned by vout_RenderPicture */
            p_vout->pf_render( p_vout, p_directbuffer );
        }

Sam Hocevar's avatar
 
Sam Hocevar committed
874 875 876
        /*
         * Sleep, wake up
         */
Gildas Bazin's avatar
 
Gildas Bazin committed
877
        if( display_date != 0 && p_directbuffer != NULL )
878
        {
879 880 881 882 883 884 885 886 887 888 889
            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;
            }
890 891
        }

Sam Hocevar's avatar
 
Sam Hocevar committed
892 893 894 895
        /* 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
896
        if( display_date != 0 )
Sam Hocevar's avatar
Sam Hocevar committed
897
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
898 899 900 901 902 903
            /* 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 );
            }
904 905 906
        }
        else
        {
Sam Hocevar's avatar
 
Sam Hocevar committed
907
            msleep( VOUT_IDLE_SLEEP );
908
        }
909

Sam Hocevar's avatar
 
Sam Hocevar committed
910 911 912 913 914 915 916
        /* 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
917
        if( p_picture != NULL && p_directbuffer != NULL )
Sam Hocevar's avatar
 
Sam Hocevar committed
918 919
        {
            /* Display the direct buffer returned by vout_RenderPicture */
920 921 922 923
            if( p_vout->pf_display )
            {
                p_vout->pf_display( p_vout, p_directbuffer );
            }
Vincent Seguin's avatar
Vincent Seguin committed
924

925 926 927 928
            /* 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
929
        }
Vincent Seguin's avatar
Vincent Seguin committed
930

931 932 933 934 935 936
        if( p_picture != NULL )
        {
            /* Reinitialize idle loop count */
            i_idle_loops = 0;
        }

Sam Hocevar's avatar
 
Sam Hocevar committed
937 938 939
        /*
         * Check events and manage thread
         */
940
        if( p_vout->pf_manage && p_vout->pf_manage( p_vout ) )
Sam Hocevar's avatar
 
Sam Hocevar committed
941
        {
Sam Hocevar's avatar
Sam Hocevar committed
942
            /* A fatal error occurred, and the thread must terminate
Gildas Bazin's avatar
 
Gildas Bazin committed
943 944
             * 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
945 946
            p_vout->b_error = 1;
        }
Gildas Bazin's avatar
 
Gildas Bazin committed
947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964

        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 ) )
            {
965
                msg_Err( p_vout, "cannot resize display" );
966
                /* FIXME: pf_end will be called again in EndThread() */
Gildas Bazin's avatar
 
Gildas Bazin committed
967 968 969 970
                p_vout->b_error = 1;
            }

            /* Need to reinitialise the chroma plugin */
971 972 973 974 975 976
            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
977
        }
978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002

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

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

            vlc_mutex_lock( &p_vout->picture_lock );

            p_vout->pf_end( p_vout );

            I_OUTPUTPICTURES = I_RENDERPICTURES = 0;

            p_vout->b_error = InitThread( p_vout );

            vlc_mutex_unlock( &p_vout->picture_lock );
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
1003
    }
Vincent Seguin's avatar
Vincent Seguin committed
1004

Sam Hocevar's avatar
 
Sam Hocevar committed
1005 1006 1007 1008
    /*
     * Error loop - wait until the thread destruction is requested
     */
    if( p_vout->b_error )
1009
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
1010
        ErrorThread( p_vout );
1011
    }
Michel Kaempf's avatar
Michel Kaempf committed
1012

Sam Hocevar's avatar
 
Sam Hocevar committed
1013 1014 1015 1016
    /* End of thread */
    EndThread( p_vout );

    /* Destroy thread structures allocated by CreateThread */
1017
    DestroyThread( p_vout );
Michel Kaempf's avatar
Michel Kaempf committed
1018 1019
}

1020
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1021
 * ErrorThread: RunThread() error loop
1022
 *****************************************************************************
Sam Hocevar's avatar
Sam Hocevar committed
1023 1024 1025
 * This function is called when an error occurred during thread main's loop.
 * The thread can still receive feed, but must be ready to terminate as soon
 * as possible.
1026
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
1027
static void ErrorThread( vout_thread_t *p_vout )
1028
{
Sam Hocevar's avatar
 
Sam Hocevar committed
1029 1030
    /* Wait until a `die' order */
    while( !p_vout->b_die )
1031
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
1032 1033
        /* Sleep a while */
        msleep( VOUT_IDLE_SLEEP );
1034
    }
1035 1036
}

1037
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1038
 * EndThread: thread destruction
1039
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1040
 * This function is called when the thread ends after a sucessful
Derk-Jan Hartman's avatar
-  
Derk-Jan Hartman committed
1041
 * initialization. It frees all resources allocated by InitThread.
1042
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
1043
static void EndThread( vout_thread_t *p_vout )
Michel Kaempf's avatar
Michel Kaempf committed
1044
{
Sam Hocevar's avatar
 
Sam Hocevar committed
1045
    int     i_index;                                        /* index in heap */
Michel Kaempf's avatar
Michel Kaempf committed
1046

Sam Hocevar's avatar
 
Sam Hocevar committed
1047
#ifdef STATS
Vincent Seguin's avatar
Vincent Seguin committed
1048
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
1049 1050
        struct tms cpu_usage;
        times( &cpu_usage );
Michel Kaempf's avatar
Michel Kaempf committed
1051

1052 1053
        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
1054
    }
Sam Hocevar's avatar
 
Sam Hocevar committed
1055
#endif
Michel Kaempf's avatar
Michel Kaempf committed
1056

Sam Hocevar's avatar
 
Sam Hocevar committed
1057 1058
    if( !p_vout->b_direct )
    {
1059
        module_Unneed( p_vout, p_vout->chroma.p_module );
Sam Hocevar's avatar
 
Sam Hocevar committed
1060
    }
Clément Stenac's avatar
Clément Stenac committed
1061

Sam Hocevar's avatar
 
Sam Hocevar committed
1062
    /* Destroy all remaining pictures */
1063
    for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++ )
Vincent Seguin's avatar
Vincent Seguin committed
1064
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
1065
        if ( p_vout->p_picture[i_index].i_type == MEMORY_PICTURE )
Michel Kaempf's avatar
Michel Kaempf committed
1066
        {
Gildas Bazin's avatar
 
Gildas Bazin committed
1067
            free( p_vout->p_picture[i_index].p_data_orig );
Michel Kaempf's avatar
Michel Kaempf committed
1068
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
1069
    }
Michel Kaempf's avatar
Michel Kaempf committed
1070

1071
    /* Destroy subpicture unit */
1072 1073
    spu_Attach( p_vout->p_spu, VLC_OBJECT(p_vout), VLC_FALSE );
    spu_Destroy( p_vout->p_spu );
Clément Stenac's avatar
Clément Stenac committed
1074

Sam Hocevar's avatar
 
Sam Hocevar committed
1075 1076 1077 1078 1079
    /* 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
1080 1081
}

1082
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
1083
 * DestroyThread: thread destruction
1084
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed