video_output.c 51.5 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;
219
    vlc_value_t      val, val2, text;
Michel Kaempf's avatar
Michel Kaempf committed
220

221 222
    unsigned int i_width = p_fmt->i_visible_width;
    unsigned int i_height = p_fmt->i_visible_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 );

301 302 303
    var_Create( p_vout, "height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
    var_Create( p_vout, "width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );

304
    /* Initialize subpicture unit */
305
    p_vout->p_spu = spu_Create( p_vout );
306
    spu_Attach( p_vout->p_spu, p_parent, VLC_TRUE );
307

gbazin's avatar
 
gbazin committed
308 309 310
    /* Attach the new object now so we can use var inheritance below */
    vlc_object_attach( p_vout, p_parent );

311 312
    spu_Init( p_vout->p_spu );

313 314
    /* Take care of some "interface/control" related initialisations */
    vout_IntfInit( p_vout );
gbazin's avatar
 
gbazin committed
315

316 317
    p_vout->b_override_aspect = VLC_FALSE;

gbazin's avatar
 
gbazin committed
318 319 320
    /* 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
321
    {
322
        int i_monitor_aspect_x = 4 , i_monitor_aspect_y = 3;
gbazin's avatar
 
gbazin committed
323
        var_Get( p_vout, "aspect-ratio", &val );
324
        var_Get( p_vout, "monitor-aspect-ratio", &val2 );
325 326 327 328 329 330 331

        if( val2.psz_string )
        {
            char *psz_parser = strchr( val2.psz_string, ':' );
            if( psz_parser )
            {
                *psz_parser++ = '\0';
332 333
                i_monitor_aspect_x = atoi( val2.psz_string );
                i_monitor_aspect_y = atoi( psz_parser );
334 335
            } else {
                AspectRatio( VOUT_ASPECT_FACTOR * atof( val2.psz_string ),
336
                                 &i_monitor_aspect_x, &i_monitor_aspect_y );
337 338 339 340
            }

            free( val2.psz_string );
        }
341 342

        /* Check whether the user tried to override aspect ratio */
gbazin's avatar
 
gbazin committed
343
        if( val.psz_string )
344 345
        {
            unsigned int i_new_aspect = i_aspect;
gbazin's avatar
 
gbazin committed
346
            char *psz_parser = strchr( val.psz_string, ':' );
347 348
                int i_aspect_x, i_aspect_y;
                AspectRatio( i_aspect, &i_aspect_x, &i_aspect_y );
349 350 351 352

            if( psz_parser )
            {
                *psz_parser++ = '\0';
353 354
                i_new_aspect = atoi( val.psz_string )
                               * VOUT_ASPECT_FACTOR / atoi( psz_parser );
355 356 357
            }
            else
            {
358 359 360 361
                if( atof( val.psz_string ) != 0 )
                {
                i_new_aspect = VOUT_ASPECT_FACTOR * atof( val.psz_string );
                }
362
            }
363
            i_new_aspect = (int)((float)i_new_aspect
364
                * (float)i_monitor_aspect_y*4.0/((float)i_monitor_aspect_x*3.0));
365

gbazin's avatar
 
gbazin committed
366
            free( val.psz_string );
367 368 369

            if( i_new_aspect && i_new_aspect != i_aspect )
            {
370
                int i_aspect_x, i_aspect_y;
zorglub's avatar
zorglub committed
371

372
                AspectRatio( i_new_aspect, &i_aspect_x, &i_aspect_y );
373 374

                msg_Dbg( p_vout, "overriding source aspect ratio to %i:%i",
375
                         i_aspect_x, i_aspect_y );
376

gbazin's avatar
 
gbazin committed
377
                p_vout->render.i_aspect = i_new_aspect;
378 379

                p_vout->b_override_aspect = VLC_TRUE;
380 381 382 383
            }
        }

        /* Look for the default filter configuration */
384 385
        var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
        var_Get( p_vout, "vout-filter", &val );
gbazin's avatar
 
gbazin committed
386
        p_vout->psz_filter_chain = val.psz_string;
gbazin's avatar
 
gbazin committed
387 388 389 390 391 392
    }
    else
    {
        /* continue the parent's filter chain */
        char *psz_end;

393
        psz_end = strchr( ((vout_thread_t *)p_parent)->psz_filter_chain, ':' );
gbazin's avatar
 
gbazin committed
394 395 396 397 398 399
        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
400
    if( !p_vout->psz_filter_chain || !*p_vout->psz_filter_chain )
gbazin's avatar
 
gbazin committed
401
    {
gbazin's avatar
 
gbazin committed
402 403 404
        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
405 406 407 408 409 410 411
    }
    else
    {
        /* the filter chain is a string list of filters separated by double
         * colons */
        char *psz_end;

412
        psz_end = strchr( p_vout->psz_filter_chain, ':' );
gbazin's avatar
 
gbazin committed
413 414 415 416
        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
417 418
    }

gbazin's avatar
 
gbazin committed
419 420 421 422
    /* 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
423
    /* Create the vout thread */
gbazin's avatar
 
gbazin committed
424
    p_vout->p_module = module_Need( p_vout,
gbazin's avatar
 
gbazin committed
425 426
        ( p_vout->psz_filter_chain && *p_vout->psz_filter_chain ) ?
        "video filter" : "video output", psz_plugin, 0 );
Sam Hocevar's avatar
 
Sam Hocevar committed
427

gbazin's avatar
 
gbazin committed
428
    if( psz_plugin ) free( psz_plugin );
Sam Hocevar's avatar
 
Sam Hocevar committed
429 430
    if( p_vout->p_module == NULL )
    {
431
        msg_Err( p_vout, "no suitable vout module" );
432
        vlc_object_detach( p_vout );
433
        vlc_object_destroy( p_vout );
434
        return NULL;
Sam Hocevar's avatar
 
Sam Hocevar committed
435
    }
gbazin's avatar
 
gbazin committed
436

gbazin's avatar
 
gbazin committed
437
    /* Create a few object variables for interface interaction */
gbazin's avatar
 
gbazin committed
438 439 440 441 442 443 444 445 446 447 448 449 450 451 452
    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 );
453 454 455
    val.psz_string = "x"; text.psz_string = "X";
    var_Change( p_vout, "deinterlace", VLC_VAR_ADDCHOICE, &val, &text );

gbazin's avatar
 
gbazin committed
456 457 458
    if( var_Get( p_vout, "deinterlace-mode", &val ) == VLC_SUCCESS )
    {
        var_Set( p_vout, "deinterlace", val );
gbazin's avatar
 
gbazin committed
459
        if( val.psz_string ) free( val.psz_string );
gbazin's avatar
 
gbazin committed
460
    }
gbazin's avatar
 
gbazin committed
461 462
    var_AddCallback( p_vout, "deinterlace", DeinterlaceCallback, NULL );

463

464
    var_Create( p_vout, "vout-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
465
    text.psz_string = _("Filters");
466 467
    var_Change( p_vout, "vout-filter", VLC_VAR_SETTEXT, &text, NULL );
    var_AddCallback( p_vout, "vout-filter", FilterCallback, NULL );
468

gbazin's avatar
 
gbazin committed
469 470
    /* Calculate delay created by internal caching */
    p_input_thread = (input_thread_t *)vlc_object_find( p_vout,
gbazin's avatar
 
gbazin committed
471
                                           VLC_OBJECT_INPUT, FIND_ANYWHERE );
gbazin's avatar
 
gbazin committed
472 473
    if( p_input_thread )
    {
gbazin's avatar
 
gbazin committed
474
        p_vout->i_pts_delay = p_input_thread->i_pts_delay;
gbazin's avatar
 
gbazin committed
475 476 477 478
        vlc_object_release( p_input_thread );
    }
    else
    {
gbazin's avatar
 
gbazin committed
479
        p_vout->i_pts_delay = DEFAULT_PTS_DELAY;
gbazin's avatar
 
gbazin committed
480 481
    }

482
    if( vlc_thread_create( p_vout, "video output", RunThread,
gbazin's avatar
 
gbazin committed
483
                           VLC_THREAD_PRIORITY_OUTPUT, VLC_TRUE ) )
Michel Kaempf's avatar
Michel Kaempf committed
484
    {
485
        msg_Err( p_vout, "out of memory" );
486
        module_Unneed( p_vout, p_vout->p_module );
487 488 489 490 491 492 493 494 495 496 497
        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;
498

499 500 501
        vlc_thread_join( p_vout );

        vlc_object_detach( p_vout );
502 503
        vlc_object_destroy( p_vout );
        return NULL;
504
    }
Michel Kaempf's avatar
Michel Kaempf committed
505

506
    return p_vout;
Michel Kaempf's avatar
Michel Kaempf committed
507 508
}

509
/*****************************************************************************
510
 * vout_Destroy: destroys a previously created video output
511 512
 *****************************************************************************
 * Destroy a terminated thread.
Michel Kaempf's avatar
Michel Kaempf committed
513
 * The function will request a destruction of the specified thread. If pi_error
514
 * is NULL, it will return once the thread is destroyed. Else, it will be
Michel Kaempf's avatar
Michel Kaempf committed
515
 * update using one of the THREAD_* constants.
516
 *****************************************************************************/
517
void vout_Destroy( vout_thread_t *p_vout )
zorglub's avatar
zorglub committed
518
{
519
    vlc_object_t *p_playlist;
zorglub's avatar
zorglub committed
520

Michel Kaempf's avatar
Michel Kaempf committed
521
    /* Request thread destruction */
522
    p_vout->b_die = VLC_TRUE;
523
    vlc_thread_join( p_vout );
Michel Kaempf's avatar
Michel Kaempf committed
524

525 526
    var_Destroy( p_vout, "intf-change" );

zorglub's avatar
zorglub committed
527
    p_playlist = vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
528 529
                                  FIND_ANYWHERE );

gbazin's avatar
 
gbazin committed
530 531
    if( p_vout->psz_filter_chain ) free( p_vout->psz_filter_chain );

532
    /* Free structure */
533
    vlc_object_destroy( p_vout );
534 535 536 537

    /* If it was the last vout, tell the interface to show up */
    if( p_playlist != NULL )
    {
zorglub's avatar
zorglub committed
538
        vout_thread_t *p_another_vout = vlc_object_find( p_playlist,
539 540 541 542 543 544 545 546 547 548 549 550 551
                                            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
552 553
}

554
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
555
 * InitThread: initialize video output thread
556
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
557 558 559
 * 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.
560
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
561
static int InitThread( vout_thread_t *p_vout )
Vincent Seguin's avatar
Vincent Seguin committed
562
{
563
    int i, i_aspect_x, i_aspect_y;
Sam Hocevar's avatar
 
Sam Hocevar committed
564

Sam Hocevar's avatar
 
Sam Hocevar committed
565 566 567 568
    vlc_mutex_lock( &p_vout->change_lock );

#ifdef STATS
    p_vout->c_loops = 0;
Vincent Seguin's avatar
Vincent Seguin committed
569 570
#endif

Sam Hocevar's avatar
 
Sam Hocevar committed
571
    /* Initialize output method, it allocates direct buffers for us */
Sam Hocevar's avatar
 
Sam Hocevar committed
572
    if( p_vout->pf_init( p_vout ) )
Vincent Seguin's avatar
Vincent Seguin committed
573
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
574
        vlc_mutex_unlock( &p_vout->change_lock );
575
        return VLC_EGENERIC;
Sam Hocevar's avatar
 
Sam Hocevar committed
576 577
    }

Sam Hocevar's avatar
 
Sam Hocevar committed
578
    if( !I_OUTPUTPICTURES )
Sam Hocevar's avatar
 
Sam Hocevar committed
579
    {
580 581
        msg_Err( p_vout, "plugin was unable to allocate at least "
                         "one direct buffer" );
Sam Hocevar's avatar
 
Sam Hocevar committed
582
        p_vout->pf_end( p_vout );
Sam Hocevar's avatar
 
Sam Hocevar committed
583
        vlc_mutex_unlock( &p_vout->change_lock );
584
        return VLC_EGENERIC;
585
    }
Vincent Seguin's avatar
Vincent Seguin committed
586

gbazin's avatar
 
gbazin committed
587 588 589 590 591 592 593 594 595
    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;
    }

596
    msg_Dbg( p_vout, "got %i direct buffer(s)", I_OUTPUTPICTURES );
Sam Hocevar's avatar
 
Sam Hocevar committed
597

598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640
    AspectRatio( p_vout->fmt_render.i_aspect, &i_aspect_x, &i_aspect_y );

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

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

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

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

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

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
641 642
    vlc_ureduce( &p_vout->fmt_out.i_sar_num, &p_vout->fmt_out.i_sar_den,
                 p_vout->fmt_out.i_sar_num, p_vout->fmt_out.i_sar_den, 0 );
643 644

    AspectRatio( p_vout->fmt_out.i_aspect, &i_aspect_x, &i_aspect_y );
Sam Hocevar's avatar
 
Sam Hocevar committed
645

646
    msg_Dbg( p_vout, "picture out %ix%i, chroma %4.4s, ar %i:%i, sar %i:%i",
647
             p_vout->output.i_width, p_vout->output.i_height,
648 649 650
             (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
651

Sam Hocevar's avatar
 
Sam Hocevar committed
652 653 654 655 656 657 658 659
    /* 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
660
    /* Check whether we managed to create direct buffers similar to
661
     * the render buffers, ie same size and chroma */
Sam Hocevar's avatar
 
Sam Hocevar committed
662 663
    if( ( p_vout->output.i_width == p_vout->render.i_width )
     && ( p_vout->output.i_height == p_vout->render.i_height )
664
     && ( vout_ChromaCmp( p_vout->output.i_chroma, p_vout->render.i_chroma ) ) )
Sam Hocevar's avatar
 
Sam Hocevar committed
665
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
666 667 668 669
        /* 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
670 671
        p_vout->b_direct = 1;

Sam Hocevar's avatar
 
Sam Hocevar committed
672 673
        for( i = 1; i < VOUT_MAX_PICTURES; i++ )
        {
gbazin's avatar
 
gbazin committed
674 675 676 677 678 679 680 681
            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
682 683 684
            PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
            I_RENDERPICTURES++;
        }
gbazin's avatar
 
gbazin committed
685 686 687 688

        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
689 690 691
    }
    else
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
692 693 694
        /* 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
695 696
        p_vout->b_direct = 0;

Sam Hocevar's avatar
 
Sam Hocevar committed
697
        /* Choose the best module */
gbazin's avatar
 
gbazin committed
698
        p_vout->chroma.p_module = module_Need( p_vout, "chroma", NULL, 0 );
Sam Hocevar's avatar
 
Sam Hocevar committed
699

Sam Hocevar's avatar
 
Sam Hocevar committed
700 701
        if( p_vout->chroma.p_module == NULL )
        {
702
            msg_Err( p_vout, "no chroma module for %4.4s to %4.4s",
703 704
                     (char*)&p_vout->render.i_chroma,
                     (char*)&p_vout->output.i_chroma );
Sam Hocevar's avatar
 
Sam Hocevar committed
705 706
            p_vout->pf_end( p_vout );
            vlc_mutex_unlock( &p_vout->change_lock );
707
            return VLC_EGENERIC;
Sam Hocevar's avatar
 
Sam Hocevar committed
708
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
709

gbazin's avatar
 
gbazin committed
710 711 712 713
        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
714 715

        /* Append render buffers after the direct buffers */
Sam Hocevar's avatar
 
Sam Hocevar committed
716
        for( i = I_OUTPUTPICTURES; i < 2 * VOUT_MAX_PICTURES; i++ )
Sam Hocevar's avatar
 
Sam Hocevar committed
717 718 719
        {
            PP_RENDERPICTURE[ I_RENDERPICTURES ] = &p_vout->p_picture[ i ];
            I_RENDERPICTURES++;
gbazin's avatar
 
gbazin committed
720 721 722 723

            /* Check if we have enough render pictures */
            if( I_RENDERPICTURES == VOUT_MAX_PICTURES )
                break;
Sam Hocevar's avatar
 
Sam Hocevar committed
724 725
        }
    }
Vincent Seguin's avatar
Vincent Seguin committed
726

Sam Hocevar's avatar
 
Sam Hocevar committed
727 728 729 730 731 732 733 734 735 736 737
    /* 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;
    }

738
/* XXX XXX mark thread ready */
739
    return VLC_SUCCESS;
Vincent Seguin's avatar
Vincent Seguin committed
740 741
}

742
/*****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
743
 * RunThread: video output thread
744
 *****************************************************************************
Sam Hocevar's avatar
 
Sam Hocevar committed
745 746 747
 * 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.
748
 *****************************************************************************/
Sam Hocevar's avatar
 
Sam Hocevar committed
749
static void RunThread( vout_thread_t *p_vout)
Vincent Seguin's avatar
Vincent Seguin committed
750
{
Sam Hocevar's avatar
 
Sam Hocevar committed
751
    int             i_index;                                /* index in heap */
752
    int             i_idle_loops = 0;  /* loops without displaying a picture */
Sam Hocevar's avatar
 
Sam Hocevar committed
753 754 755 756
    mtime_t         current_date;                            /* current date */
    mtime_t         display_date;                            /* display date */

    picture_t *     p_picture;                            /* picture pointer */
757
    picture_t *     p_last_picture = NULL;                   /* last picture */
Sam Hocevar's avatar
 
Sam Hocevar committed
758 759
    picture_t *     p_directbuffer;              /* direct buffer to display */

760
    subpicture_t *  p_subpic = NULL;                   /* subpicture pointer */
Sam Hocevar's avatar
 
Sam Hocevar committed
761 762 763 764 765

    /*
     * Initialize thread
     */
    p_vout->b_error = InitThread( p_vout );
gbazin's avatar
 
gbazin committed
766 767 768 769

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

Sam Hocevar's avatar
 
Sam Hocevar committed
770 771 772
    if( p_vout->b_error )
    {
        /* Destroy thread structures allocated by Create and InitThread */
773
        DestroyThread( p_vout );
Sam Hocevar's avatar
 
Sam Hocevar committed
774 775
        return;
    }
776

777
    /*
Sam Hocevar's avatar
Sam Hocevar committed
778
     * Main loop - it is not executed if an error occurred during
Sam Hocevar's avatar
 
Sam Hocevar committed
779
     * initialization
780
     */
Sam Hocevar's avatar
 
Sam Hocevar committed
781
    while( (!p_vout->b_die) && (!p_vout->b_error) )
782
    {
Sam Hocevar's avatar
 
Sam Hocevar committed
783
        /* Initialize loop variables */
784
        p_picture = NULL;
Sam Hocevar's avatar
 
Sam Hocevar committed
785 786
        display_date = 0;
        current_date = mdate();
Sam Hocevar's avatar
 
Sam Hocevar committed
787

788
#if 0
Sam Hocevar's avatar
 
Sam Hocevar committed
789 790
        p_vout->c_loops++;
        if( !(p_vout->c_loops % VOUT_STATS_NB_LOOPS) )
791
        {
792 793
            msg_Dbg( p_vout, "picture heap: %d/%d",
                     I_RENDERPICTURES, p_vout->i_heap_size );
Sam Hocevar's avatar
 
Sam Hocevar committed
794
        }
795
#endif
Sam Hocevar's avatar
 
Sam Hocevar committed
796 797

        /*
798 799 800
         * Find the picture to display (the one with the earliest date).
         * This operation does not need lock, since only READY_PICTUREs
         * are handled. */
801
        for( i_index = 0; i_index < I_RENDERPICTURES; i_index++ )
Sam Hocevar's avatar
 
Sam Hocevar committed
802
        {
Sam Hocevar's avatar
 
Sam Hocevar committed
803 804 805
            if( (PP_RENDERPICTURE[i_index]->i_status == READY_PICTURE)
                && ( (p_picture == NULL) ||
                     (PP_RENDERPICTURE[i_index]->date < display_date) ) )
806
            {
Sam Hocevar's avatar
 
Sam Hocevar committed
807
                p_picture = PP_RENDERPICTURE[i_index];
Sam Hocevar's avatar
 
Sam Hocevar committed
808
                display_date = p_picture->date;
809 810
            }
        }
Sam Hocevar's avatar
 
Sam Hocevar committed
811

812
        if( p_picture )
813
        {
814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829
            /* 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;
                    }
                }
            }
830

831 832 833 834 835 836 837 838 839 840 841 842 843 844
            /* 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 );
845
                p_last_picture = NULL;
846 847
            }

Sam Hocevar's avatar
 
Sam Hocevar committed
848 849 850 851
            /* Compute FPS rate */
            p_vout->p_fps_sample[ p_vout->c_fps_samples++ % VOUT_FPS_SAMPLES ]
                = display_date;

852
            if( !p_picture->b_force &&
853
                p_picture != p_last_picture &&
854
                display_date < current_date + p_vout->render_time )
Sam Hocevar's avatar
 
Sam Hocevar committed
855 856 857 858 859 860 861 862 863 864 865 866 867 868
            {
                /* 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
869
                    p_vout->i_heap_size--;
Sam Hocevar's avatar
 
Sam Hocevar committed
870
                }
gbazin's avatar
 
gbazin committed
871
                msg_Warn( p_vout, "late picture skipped ("I64Fd")",
872
                                  current_date - display_date );
873 874 875 876
                vlc_mutex_unlock( &p_vout->picture_lock );

                continue;
            }
877

gbazin's avatar
 
gbazin committed