video_output.c 50.4 KB
Newer Older
1
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
2
 * video_output.c : video output thread
3
 *
Michel Kaempf's avatar
Michel Kaempf committed
4 5
 * This module describes the programming interface for video output threads.
 * It includes functions allowing to open a new thread, send pictures to a
6 7
 * thread, and destroy a previously oppened video output thread.
 *****************************************************************************
8
 * Copyright (C) 2000-2004 the VideoLAN team
gbazin's avatar
gbazin committed
9
 * $Id$
10
 *
Sam Hocevar's avatar
 
Sam Hocevar committed
11
 * Authors: Vincent Seguin <seguin@via.ecp.fr>
12
 *          Gildas Bazin <gbazin@videolan.org>
13 14 15 16 17
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
Sam Hocevar's avatar
Sam Hocevar committed
18
 *
19 20
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 22
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
23
 *
24 25 26
 * 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.
27
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
28

29
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
30
 * Preamble
31
 *****************************************************************************/
32
#include <stdlib.h>                                                /* free() */
Vincent Seguin's avatar
Vincent Seguin committed
33

34
#include <vlc/vlc.h>
Sam Hocevar's avatar
 
Sam Hocevar committed
35

36 37
#ifdef HAVE_SYS_TIMES_H
#   include <sys/times.h>
38
#endif
39

40
#include "vlc_video.h"
Michel Kaempf's avatar
Michel Kaempf committed
41
#include "video_output.h"
42
#include "vlc_spu.h"
gbazin's avatar
 
gbazin committed
43
#include <vlc/input.h>                 /* for input_thread_t and i_pts_delay */
44
#include "vlc_playlist.h"
45

46 47 48 49
#if defined( SYS_DARWIN )
#include "darwin_specific.h"
#endif

50
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
51
 * Local prototypes
52
 *****************************************************************************/
53 54 55 56 57
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
58

59
static void     AspectRatio       ( int, int *, int * );
60 61
static int      BinaryLog         ( uint32_t );
static void     MaskToShift       ( int *, int *, uint32_t );
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
62
static void     InitWindowSize    ( vout_thread_t *, unsigned *, unsigned * );
Michel Kaempf's avatar
Michel Kaempf committed
63

gbazin's avatar
 
gbazin committed
64
/* Object variables callbacks */
gbazin's avatar
 
gbazin committed
65 66
static int DeinterlaceCallback( vlc_object_t *, char const *,
                                vlc_value_t, vlc_value_t, void * );
67 68
static int FilterCallback( vlc_object_t *, char const *,
                           vlc_value_t, vlc_value_t, void * );
gbazin's avatar
 
gbazin committed
69

70 71 72
/* From vout_intf.c */
int vout_Snapshot( vout_thread_t *, picture_t * );

73
/*****************************************************************************
74 75 76 77 78
 * 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.
 *****************************************************************************/
79 80
vout_thread_t *__vout_Request( vlc_object_t *p_this, vout_thread_t *p_vout,
                               video_format_t *p_fmt )
81
{
82
    if( !p_fmt )
83
    {
gbazin's avatar
 
gbazin committed
84
        /* Reattach video output to input before bailing out */
85 86
        if( p_vout )
        {
87
            vlc_object_t *p_playlist;
88

89 90
            p_playlist = vlc_object_find( p_this, VLC_OBJECT_PLAYLIST,
                                          FIND_ANYWHERE );
gbazin's avatar
 
gbazin committed
91

92
            if( p_playlist )
93
            {
94
                spu_Attach( p_vout->p_spu, p_this, VLC_FALSE );
95
                vlc_object_detach( p_vout );
96
                vlc_object_attach( p_vout, p_playlist );
97

98
                vlc_object_release( p_playlist );
99 100 101
            }
            else
            {
zorglub's avatar
zorglub committed
102
                msg_Dbg( p_this, "cannot find playlist, destroying vout" );
103 104 105
                vlc_object_detach( p_vout );
                vout_Destroy( p_vout );
            }
106 107 108 109 110 111 112 113 114 115 116 117 118 119 120
        }
        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 )
        {
121
            playlist_t *p_playlist;
gbazin's avatar
 
gbazin committed
122

123 124 125
            p_playlist = vlc_object_find( p_this,
                                          VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
            if( p_playlist )
gbazin's avatar
 
gbazin committed
126
            {
127
                vlc_mutex_lock( &p_playlist->gc_lock );
128 129
                p_vout = vlc_object_find( p_playlist,
                                          VLC_OBJECT_VOUT, FIND_CHILD );
130
                /* only first children of p_input for unused vout */
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
131
                if( p_vout && p_vout->p_parent != (vlc_object_t *)p_playlist )
132 133 134 135
                {
                    vlc_object_release( p_vout );
                    p_vout = NULL;
                }
136
                vlc_mutex_unlock( &p_playlist->gc_lock );
137
                vlc_object_release( p_playlist );
gbazin's avatar
 
gbazin committed
138
            }
139 140 141 142 143 144
        }
    }

    /* If we now have a video output, check it has the right properties */
    if( p_vout )
    {
gbazin's avatar
 
gbazin committed
145
        char *psz_filter_chain;
146
        vlc_value_t val;
gbazin's avatar
 
gbazin committed
147

148
        /* We don't directly check for the "vout-filter" variable for obvious
gbazin's avatar
 
gbazin committed
149 150 151
         * performance reasons. */
        if( p_vout->b_filter_change )
        {
152
            var_Get( p_vout, "vout-filter", &val );
153
            psz_filter_chain = val.psz_string;
gbazin's avatar
 
gbazin committed
154 155 156 157 158 159 160 161 162 163 164 165

            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;
            }

166
            if( !psz_filter_chain && !p_vout->psz_filter_chain )
gbazin's avatar
 
gbazin committed
167 168 169 170
            {
                p_vout->b_filter_change = VLC_FALSE;
            }

gbazin's avatar
 
gbazin committed
171
            if( psz_filter_chain ) free( psz_filter_chain );
gbazin's avatar
 
gbazin committed
172 173
        }

174 175 176 177
        if( ( p_vout->fmt_render.i_width != p_fmt->i_width ) ||
            ( p_vout->fmt_render.i_height != p_fmt->i_height ) ||
            ( p_vout->fmt_render.i_chroma != p_fmt->i_chroma ) ||
            ( p_vout->fmt_render.i_aspect != p_fmt->i_aspect
178
                    && !p_vout->b_override_aspect ) ||
gbazin's avatar
 
gbazin committed
179
            p_vout->b_filter_change )
180 181 182 183 184 185 186 187 188 189 190
        {
            /* 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 );
191
            spu_Attach( p_vout->p_spu, p_this, VLC_TRUE );
192 193 194 195 196 197 198 199 200
            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" );

201
        p_vout = vout_Create( p_this, p_fmt );
202 203 204 205 206 207 208
    }

    return p_vout;
}

/*****************************************************************************
 * vout_Create: creates a new video output thread
209
 *****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
210 211
 * This function creates a new video output thread, and returns a pointer
 * to its description. On error, it returns NULL.
212
 *****************************************************************************/
213
vout_thread_t * __vout_Create( vlc_object_t *p_parent, video_format_t *p_fmt )
Michel Kaempf's avatar
Michel Kaempf committed
214
{
gbazin's avatar
 
gbazin committed
215 216 217 218
    vout_thread_t  * p_vout;                            /* thread descriptor */
    input_thread_t * p_input_thread;
    int              i_index;                               /* loop variable */
    char           * psz_plugin;
gbazin's avatar
 
gbazin committed
219
    vlc_value_t      val, text;
Michel Kaempf's avatar
Michel Kaempf committed
220

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

226
    /* Allocate descriptor */
227
    p_vout = vlc_object_create( p_parent, VLC_OBJECT_VOUT );
228
    if( p_vout == NULL )
Michel Kaempf's avatar
Michel Kaempf committed
229
    {
230
        msg_Err( p_parent, "out of memory" );
231
        return NULL;
Michel Kaempf's avatar
Michel Kaempf committed
232
    }
233

234
    /* Initialize pictures - translation tables and functions
gbazin's avatar
 
gbazin committed
235
     * will be initialized later in InitThread */
236
    for( i_index = 0; i_index < 2 * VOUT_MAX_PICTURES + 1; i_index++)
gbazin's avatar
 
gbazin committed
237 238 239 240 241
    {
        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;
242
        p_vout->p_picture[i_index].b_slow   = 0;
gbazin's avatar
 
gbazin committed
243 244 245 246 247 248 249
    }

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

    /* Initialize the rendering heap */
    I_RENDERPICTURES = 0;
250 251
    p_vout->fmt_render        = *p_fmt;   /* FIXME palette */
    p_vout->fmt_in            = *p_fmt;   /* FIXME palette */
gbazin's avatar
 
gbazin committed
252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282
    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;
gbazin's avatar
 
gbazin committed
283
    p_vout->i_alignment  = 0;
gbazin's avatar
 
gbazin committed
284 285 286
    p_vout->render_time  = 10;
    p_vout->c_fps_samples = 0;
    p_vout->b_filter_change = 0;
287
    p_vout->pf_control = 0;
288
    p_vout->p_parent_intf = 0;
gbazin's avatar
 
gbazin committed
289 290 291 292 293

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

294 295 296 297 298 299 300
    /* 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 );

301
    /* Initialize subpicture unit */
302
    p_vout->p_spu = spu_Create( p_vout );
303
    spu_Attach( p_vout->p_spu, p_parent, VLC_TRUE );
304

gbazin's avatar
 
gbazin committed
305 306 307
    /* Attach the new object now so we can use var inheritance below */
    vlc_object_attach( p_vout, p_parent );

308 309
    spu_Init( p_vout->p_spu );

310 311
    /* Take care of some "interface/control" related initialisations */
    vout_IntfInit( p_vout );
gbazin's avatar
 
gbazin committed
312

313 314
    p_vout->b_override_aspect = VLC_FALSE;

gbazin's avatar
 
gbazin committed
315 316 317
    /* 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
318
    {
gbazin's avatar
 
gbazin committed
319
        var_Get( p_vout, "aspect-ratio", &val );
320 321

        /* Check whether the user tried to override aspect ratio */
gbazin's avatar
 
gbazin committed
322
        if( val.psz_string )
323 324
        {
            unsigned int i_new_aspect = i_aspect;
gbazin's avatar
 
gbazin committed
325
            char *psz_parser = strchr( val.psz_string, ':' );
326 327 328 329

            if( psz_parser )
            {
                *psz_parser++ = '\0';
gbazin's avatar
 
gbazin committed
330 331
                i_new_aspect = atoi( val.psz_string ) * VOUT_ASPECT_FACTOR
                                                      / atoi( psz_parser );
332 333 334
            }
            else
            {
335 336
                i_new_aspect = VOUT_ASPECT_FACTOR
                                       * atof( val.psz_string );
337 338
            }

gbazin's avatar
 
gbazin committed
339
            free( val.psz_string );
340 341 342

            if( i_new_aspect && i_new_aspect != i_aspect )
            {
343
                int i_aspect_x, i_aspect_y;
zorglub's avatar
zorglub committed
344

345
                AspectRatio( i_new_aspect, &i_aspect_x, &i_aspect_y );
346 347

                msg_Dbg( p_vout, "overriding source aspect ratio to %i:%i",
348
                         i_aspect_x, i_aspect_y );
349

gbazin's avatar
 
gbazin committed
350
                p_vout->render.i_aspect = i_new_aspect;
351 352

                p_vout->b_override_aspect = VLC_TRUE;
353 354 355 356
            }
        }

        /* Look for the default filter configuration */
357 358
        var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
        var_Get( p_vout, "vout-filter", &val );
gbazin's avatar
 
gbazin committed
359
        p_vout->psz_filter_chain = val.psz_string;
gbazin's avatar
 
gbazin committed
360 361 362 363 364 365
    }
    else
    {
        /* continue the parent's filter chain */
        char *psz_end;

366
        psz_end = strchr( ((vout_thread_t *)p_parent)->psz_filter_chain, ':' );
gbazin's avatar
 
gbazin committed
367 368 369 370 371 372
        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 */
gbazin's avatar
 
gbazin committed
373
    if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
gbazin's avatar
 
gbazin committed
374
    {
gbazin's avatar
 
gbazin committed
375 376 377
        var_Create( p_vout, "vout", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
        var_Get( p_vout, "vout", &val );
        psz_plugin = val.psz_string;
gbazin's avatar
 
gbazin committed
378 379 380 381 382 383 384
    }
    else
    {
        /* the filter chain is a string list of filters separated by double
         * colons */
        char *psz_end;

385
        psz_end = strchr( p_vout->psz_filter_chain, ':' );
gbazin's avatar
 
gbazin committed
386 387 388 389
        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
390 391
    }

gbazin's avatar
 
gbazin committed
392 393 394 395
    /* Initialize the dimensions of the video window */
    InitWindowSize( p_vout, &p_vout->i_window_width,
                    &p_vout->i_window_height );

gbazin's avatar
 
gbazin committed
396
    /* Create the vout thread */
gbazin's avatar
 
gbazin committed
397
    p_vout->p_module = module_Need( p_vout,
gbazin's avatar
 
gbazin committed
398 399
        ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ?
        "video filter" : "video output", psz_plugin, 0 );
Sam Hocevar's avatar
 
Sam Hocevar committed
400

gbazin's avatar
 
gbazin committed
401
    if( psz_plugin ) free( psz_plugin );
Sam Hocevar's avatar
 
Sam Hocevar committed
402 403
    if( p_vout->p_module == NULL )
    {
404
        msg_Err( p_vout, "no suitable vout module" );
405
        vlc_object_detach( p_vout );
406
        vlc_object_destroy( p_vout );
407
        return NULL;
Sam Hocevar's avatar
 
Sam Hocevar committed
408
    }
gbazin's avatar
 
gbazin committed
409

gbazin's avatar
 
gbazin committed
410
    /* Create a few object variables for interface interaction */
gbazin's avatar
 
gbazin committed
411 412 413 414 415 416 417 418 419 420 421 422 423 424 425
    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 );
426 427 428
    val.psz_string = "x"; text.psz_string = "X";
    var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );

gbazin's avatar
 
gbazin committed
429 430 431
    if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
    {
        var_Set( p_vout, "deinterlace", val );
gbazin's avatar
 
gbazin committed
432
        if( val.psz_string ) free( val.psz_string );
gbazin's avatar
 
gbazin committed
433
    }
gbazin's avatar
 
gbazin committed
434 435
    var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );

436

437
    var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
438
    text.psz_string = _("Filters");
439 440
    var_Change( p_vout, "vout-filter", VLC_VAR_SETTEXT, &text, NULL );
    var_AddCallback( p_vout, "vout-filter", FilterCallback, NULL );
441

gbazin's avatar
 
gbazin committed
442 443
    /* Calculate delay created by internal caching */
    p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
gbazin's avatar
 
gbazin committed
444
                                           VLC_OBJECT_INPUT, FIND_ANYWHERE );
gbazin's avatar
 
gbazin committed
445 446
    if( p_input_thread )
    {
gbazin's avatar
 
gbazin committed
447
        p_vout->i_pts_delay = p_input_thread->i_pts_delay;
gbazin's avatar
 
gbazin committed
448 449 450 451
        vlc_object_release( p_input_thread );
    }
    else
    {
gbazin's avatar
 
gbazin committed
452
        p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
gbazin's avatar
 
gbazin committed
453 454
    }

455
    if( vlc_thread_create( p_vout, "video output", RunThread,
gbazin's avatar
 
gbazin committed
456
                           VLC_THREAD_PRIORITY_OUTPUT, VLC_TRUE ) )
Michel Kaempf's avatar
Michel Kaempf committed
457
    {
458
        msg_Err( p_vout, "out of memory" );
459
        module_Unneed( p_vout, p_vout->p_module );
460 461 462 463 464 465 466 467 468 469 470
        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;
471

472 473 474
        vlc_thread_join( p_vout );

        vlc_object_detach( p_vout );
475 476
        vlc_object_destroy( p_vout );
        return NULL;
477
    }
Michel Kaempf's avatar
Michel Kaempf committed
478

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

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

Michel Kaempf's avatar
Michel Kaempf committed
494
    /* Request thread destruction */
495
    p_vout->b_die = VLC_TRUE;
496
    vlc_thread_join( p_vout );
Michel Kaempf's avatar
Michel Kaempf committed
497

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

zorglub's avatar
zorglub committed
500
    p_playlist = vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
501 502
                                  FIND_ANYWHERE );

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

505
    /* Free structure */
506
    vlc_object_destroy( p_vout );
507 508 509 510

    /* If it was the last vout, tell the interface to show up */
    if( p_playlist != NULL )
    {
zorglub's avatar
zorglub committed
511
        vout_thread_t *p_another_vout = vlc_object_find( p_playlist,
512 513 514 515 516 517 518 519 520 521 522 523 524
                                            VLC_OBJECT_VOUT, FIND_ANYWHERE );
        if( p_another_vout == NULL )
        {
            vlc_value_t val;
            val.b_bool = VLC_TRUE;
            var_Set( p_playlist, "intf-show", val );
        }
        else
        {
            vlc_object_release( p_another_vout );
        }
        vlc_object_release( p_playlist );
    }
Michel Kaempf's avatar
Michel Kaempf committed
525 526
}

527
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
528
 * InitThread: initialize video output thread
529
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
530 531 532
 * This function is called from RunThread and performs the second step of the
 * initialization. It returns 0 on success. Note that the thread's flag are not
 * modified inside this function.
533
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
534
static int InitThread( vout_thread_t *p_vout )
Vincent Seguin's avatar
Vincent Seguin committed
535
{
536
    int i, i_aspect_x, i_aspect_y;
Sam Hocevar's avatar
 
Sam Hocevar committed
537

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

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

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

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

gbazin's avatar
 
gbazin committed
560 561 562 563 564 565 566 567 568
    if( I_OUTPUTPICTURES > VOUT_MAX_PICTURES )
    {
        msg_Err( p_vout, "plugin allocated too many direct buffers, "
                         "our internal buffers must have overflown." );
        p_vout->pf_end( p_vout );
        vlc_mutex_unlock( &p_vout->change_lock );
        return VLC_EGENERIC;
    }

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

571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617
    AspectRatio( p_vout->fmt_render.i_aspect, &i_aspect_x, &i_aspect_y );

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

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

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

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

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

    vlc_reduce( &p_vout->fmt_out.i_sar_num, &p_vout->fmt_out.i_sar_den,
                p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den, 0 );

    AspectRatio( p_vout->fmt_out.i_aspect, &i_aspect_x, &i_aspect_y );
Sam Hocevar's avatar
 
Sam Hocevar committed
618

619
    msg_Dbg( p_vout, "picture out %ix%i, chroma %4.4s, ar %i:%i, sar %i:%i",
620
             p_vout->output.i_width, p_vout->output.i_height,
621 622 623
             (char*)&p_vout->output.i_chroma,
             i_aspect_x, i_aspect_y,
             p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den );
Sam Hocevar's avatar
 
Sam Hocevar committed
624

Sam Hocevar's avatar
 
Sam Hocevar committed
625 626 627 628 629 630 631 632
    /* 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
633
    /* Check whether we managed to create direct buffers similar to
634
     * the render buffers, ie same size and chroma */
Sam Hocevar's avatar
 
Sam Hocevar committed
635 636
    if( ( p_vout->output.i_width == p_vout->render.i_width )
     && ( p_vout->output.i_height == p_vout->render.i_height )
637
     && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
Sam Hocevar's avatar
 
Sam Hocevar committed
638
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
639 640 641 642
        /* 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
643 644
        p_vout->b_direct = 1;

Sam Hocevar's avatar
 
Sam Hocevar committed
645 646
        for( i = 1; i < VOUT_MAX_PICTURES; i++ )
        {
gbazin's avatar
 
gbazin committed
647 648 649 650 651 652 653 654
            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
655 656 657
            PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
            I_RENDERPICTURES++;
        }
gbazin's avatar
 
gbazin committed
658 659 660 661

        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
662 663 664
    }
    else
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
665 666 667
        /* 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
668 669
        p_vout->b_direct = 0;

Sam Hocevar's avatar
 
Sam Hocevar committed
670
        /* Choose the best module */
gbazin's avatar
 
gbazin committed
671
        p_vout->chroma.p_module = module_Need( p_vout, "chroma", NULL, 0 );
Sam Hocevar's avatar
 
Sam Hocevar committed
672

Sam Hocevar's avatar
 
Sam Hocevar committed
673 674
        if( p_vout->chroma.p_module == NULL )
        {
675
            msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
676 677
                     (char*)&p_vout->render.i_chroma,
                     (char*)&p_vout->output.i_chroma );
Sam Hocevar's avatar
 
Sam Hocevar committed
678 679
            p_vout->pf_end( p_vout );
            vlc_mutex_unlock( &p_vout->change_lock );
680
            return VLC_EGENERIC;
Sam Hocevar's avatar
 
Sam Hocevar committed
681
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
682

gbazin's avatar
 
gbazin committed
683 684 685 686
        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
687 688

        /* Append render buffers after the direct buffers */
Sam Hocevar's avatar
 
Sam Hocevar committed
689
        for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
Sam Hocevar's avatar
 
Sam Hocevar committed
690 691 692
        {
            PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
            I_RENDERPICTURES++;
gbazin's avatar
 
gbazin committed
693 694 695 696

            /* Check if we have enough render pictures */
            if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
                break;
Sam Hocevar's avatar
 
Sam Hocevar committed
697 698
        }
    }
Vincent Seguin's avatar
Vincent Seguin committed
699

Sam Hocevar's avatar
 
Sam Hocevar committed
700 701 702 703 704 705 706 707 708 709 710
    /* 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;
    }

711
/* XXX XXX mark thread ready */
712
    return VLC_SUCCESS;
Vincent Seguin's avatar
Vincent Seguin committed
713 714
}

715
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
716
 * RunThread: video output thread
717
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
718 719 720
 * 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.
721
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
722
static void RunThread( vout_thread_t *p_vout)
Vincent Seguin's avatar
Vincent Seguin committed
723
{
Sam Hocevar's avatar
 
Sam Hocevar committed
724
    int             i_index;                                /* index in heap */
725
    int             i_idle_loops = 0;  /* loops without displaying a picture */
Sam Hocevar's avatar
 
Sam Hocevar committed
726 727 728 729
    mtime_t         current_date;                            /* current date */
    mtime_t         display_date;                            /* display date */

    picture_t *     p_picture;                            /* picture pointer */
730
    picture_t *     p_last_picture = NULL;                   /* last picture */
Sam Hocevar's avatar
 
Sam Hocevar committed
731 732
    picture_t *     p_directbuffer;              /* direct buffer to display */

733
    subpicture_t *  p_subpic = NULL;                   /* subpicture pointer */
Sam Hocevar's avatar
 
Sam Hocevar committed
734 735 736 737 738

    /*
     * Initialize thread
     */
    p_vout->b_error = InitThread( p_vout );
gbazin's avatar
 
gbazin committed
739 740 741 742

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

Sam Hocevar's avatar
 
Sam Hocevar committed
743 744 745
    if( p_vout->b_error )
    {
        /* Destroy thread structures allocated by Create and InitThread */
746
        DestroyThread( p_vout );
Sam Hocevar's avatar
 
Sam Hocevar committed
747 748
        return;
    }
749

750
    /*
Sam Hocevar's avatar
Sam Hocevar committed
751
     * Main loop - it is not executed if an error occurred during
Sam Hocevar's avatar
 
Sam Hocevar committed
752
     * initialization
753
     */
Sam Hocevar's avatar
 
Sam Hocevar committed
754
    while( (!p_vout->b_die) && (!p_vout->b_error) )
755
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
756
        /* Initialize loop variables */
757
        p_picture = NULL;
Sam Hocevar's avatar
 
Sam Hocevar committed
758 759
        display_date = 0;
        current_date = mdate();
Sam Hocevar's avatar
 
Sam Hocevar committed
760

761
#if 0
Sam Hocevar's avatar
 
Sam Hocevar committed
762 763
        p_vout->c_loops++;
        if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
764
        {
765 766
            msg_Dbg( p_vout, "picture heap: %d/%d",
                     I_RENDERPICTURES, p_vout->i_heap_size );
Sam Hocevar's avatar
 
Sam Hocevar committed
767
        }
768
#endif
Sam Hocevar's avatar
 
Sam Hocevar committed
769 770

        /*
771 772 773
         * Find the picture to display (the one with the earliest date).
         * This operation does not need lock, since only READY_PICTUREs
         * are handled. */
774
        for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
Sam Hocevar's avatar
 
Sam Hocevar committed
775
        {
Sam Hocevar's avatar
 
Sam Hocevar committed
776 777 778
            if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
                && ( (p_picture == NULL) ||
                     (PP_RENDERPICTURE[i_index]->date < display_date) ) )
779
            {
Sam Hocevar's avatar
 
Sam Hocevar committed
780
                p_picture = PP_RENDERPICTURE[i_index];
Sam Hocevar's avatar
 
Sam Hocevar committed
781
                display_date = p_picture->date;
782 783
            }
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
784

785
        if( p_picture )
786
        {
787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802
            /* 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;
                    }
                }
            }
803

804 805 806 807 808 809 810 811 812 813 814 815 816 817
            /* 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 );
818
                p_last_picture = NULL;
819 820
            }

Sam Hocevar's avatar
 
Sam Hocevar committed
821 822 823 824
            /* Compute FPS rate */
            p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
                = display_date;

825
            if( !p_picture->b_force &&
826
                p_picture != p_last_picture &&
827
                display_date < current_date + p_vout->render_time )
Sam Hocevar's avatar
 
Sam Hocevar committed
828 829 830 831 832 833 834 835 836 837 838 839 840 841
            {
                /* 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
842
                    p_vout->i_heap_size--;
Sam Hocevar's avatar
 
Sam Hocevar committed
843
                }
gbazin's avatar
 
gbazin committed
844
                msg_Warn( p_vout, "late picture skipped ("I64Fd")",
845
                                  current_date - display_date );
846 847 848 849
                vlc_mutex_unlock( &p_vout->picture_lock );

                continue;
            }
850

gbazin's avatar
 
gbazin committed
851
            if( display_date >
sigmunau's avatar
sigmunau committed
852
                current_date + p_vout->i_pts_delay + VOUT_BOGUS_DELAY )
853 854 855 856 857 858 859 860 861 862 863 864 865 866 867
            {
                /* 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--;
                }
868
                msg_Warn( p_vout, "vout warning: early picture skipped "
gbazin's avatar
 
gbazin committed
869 870
                          "("I64Fd")", display_date - current_date
                          - p_vout->i_pts_delay );
Sam Hocevar's avatar
 
Sam Hocevar committed
871 872 873 874
                vlc_mutex_unlock( &p_vout->picture_lock );

                continue;
            }
875

876
            if( display_date > current_date + VOUT_DISPLAY_DELAY )
Sam Hocevar's avatar
 
Sam Hocevar committed
877 878 879 880 881 882 883 884
            {
                /* 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;
            }
885 886
            else if( p_picture == p_last_picture )
            {
887 888
                /* We are asked to repeat the previous picture, but we first
                 * wait for a couple of idle loops */
889 890 891 892 893 894 895
                if( i_idle_loops < 4 )
                {
                    p_picture    = NULL;