git.sesse.net Git - vlc/blob - modules/stream_out/mosaic_bridge.c

   1 /*****************************************************************************
   2  * mosaic_bridge.c:
   3  *****************************************************************************
   4  * Copyright (C) 2004-2007 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Antoine Cellerier <dionoea@videolan.org>
   8  *          Christophe Massiot <massiot@via.ecp.fr>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28 #include <errno.h>                                                 /* ENOMEM */
  29 #include <stdlib.h>                                                /* free() */
  30 #include <string.h>                                            /* strerror() */
  31
  32 #include <vlc/vlc.h>
  33 #include <vlc_sout.h>
  34 #include <vlc_block.h>
  35 #include <vlc_codec.h>
  36
  37 #include <vlc_image.h>
  38 #include <vlc_filter.h>
  39
  40 #include "../video_filter/mosaic.h"
  41
  42 /*****************************************************************************
  43  * Local structures
  44  *****************************************************************************/
  45 struct sout_stream_sys_t
  46 {
  47     bridged_es_t *p_es;
  48     vlc_mutex_t *p_lock;
  49
  50     decoder_t       *p_decoder;
  51     image_handler_t *p_image; /* filter for resizing */
  52     int i_height, i_width;
  53     unsigned int i_sar_num, i_sar_den;
  54     char *psz_id;
  55     vlc_bool_t b_inited;
  56
  57     int i_chroma; /* force image format chroma */
  58
  59     filter_t **pp_vfilters;
  60     int i_vfilters;
  61 };
  62
  63 #define PICTURE_RING_SIZE 4
  64 struct decoder_owner_sys_t
  65 {
  66     picture_t *pp_pics[PICTURE_RING_SIZE];
  67
  68     /* Current format in use by the output */
  69     video_format_t video;
  70 };
  71
  72 typedef void (* pf_release_t)( picture_t * );
  73 static void ReleasePicture( picture_t *p_pic )
  74 {
  75     p_pic->i_refcount--;
  76
  77     if ( p_pic->i_refcount <= 0 )
  78     {
  79         if ( p_pic->p_sys != NULL )
  80         {
  81             pf_release_t pf_release = (pf_release_t)p_pic->p_sys;
  82             p_pic->p_sys = NULL;
  83             pf_release( p_pic );
  84         }
  85         else
  86         {
  87             if( p_pic && p_pic->p_data_orig ) free( p_pic->p_data_orig );
  88             if( p_pic ) free( p_pic );
  89         }
  90     }
  91 }
  92
  93 /*****************************************************************************
  94  * Local prototypes
  95  *****************************************************************************/
  96 static int  Open    ( vlc_object_t * );
  97 static void Close   ( vlc_object_t * );
  98 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
  99 static int               Del ( sout_stream_t *, sout_stream_id_t * );
 100 static int               Send( sout_stream_t *, sout_stream_id_t *, block_t * );
 101
 102 inline static void video_del_buffer_decoder( decoder_t *, picture_t * );
 103 inline static void video_del_buffer_filter( filter_t *, picture_t * );
 104 static void video_del_buffer( vlc_object_t *, picture_t * );
 105
 106 inline static picture_t *video_new_buffer_decoder( decoder_t * );
 107 inline static picture_t *video_new_buffer_filter( filter_t * );
 108 static picture_t *video_new_buffer( vlc_object_t *, decoder_owner_sys_t *,
 109                                     es_format_t *, void (*)( picture_t * ) );
 110
 111 static void video_link_picture_decoder( decoder_t *, picture_t * );
 112 static void video_unlink_picture_decoder( decoder_t *, picture_t * );
 113 static int MosaicBridgeCallback( vlc_object_t *, char const *,
 114                                  vlc_value_t, vlc_value_t, void * );
 115
 116 /*****************************************************************************
 117  * Module descriptor
 118  *****************************************************************************/
 119 #define ID_TEXT N_("ID")
 120 #define ID_LONGTEXT N_( \
 121     "Specify an identifier string for this subpicture" )
 122
 123 #define WIDTH_TEXT N_("Video width")
 124 #define WIDTH_LONGTEXT N_( \
 125     "Output video width." )
 126 #define HEIGHT_TEXT N_("Video height")
 127 #define HEIGHT_LONGTEXT N_( \
 128     "Output video height." )
 129 #define RATIO_TEXT N_("Sample aspect ratio")
 130 #define RATIO_LONGTEXT N_( \
 131     "Sample aspect ratio of the destination (1:1, 3:4, 2:3)." )
 132
 133 #define VFILTER_TEXT N_("Video filter")
 134 #define VFILTER_LONGTEXT N_( \
 135     "Video filters will be applied to the video stream." );
 136
 137 #define CHROMA_TEXT N_("Image chroma")
 138 #define CHROMA_LONGTEXT N_( \
 139     "Force the use of a specific chroma. Use YUVA if you're planning " \
 140     "to use the Alphamask or Bluescreen video filter." );
 141
 142 #define CFG_PREFIX "sout-mosaic-bridge-"
 143
 144 vlc_module_begin();
 145     set_shortname( _( "Mosaic bridge" ) );
 146     set_description(_("Mosaic bridge stream output") );
 147     set_capability( "sout stream", 0 );
 148     add_shortcut( "mosaic-bridge" );
 149
 150     add_string( CFG_PREFIX "id", "Id", NULL, ID_TEXT, ID_LONGTEXT,
 151                 VLC_FALSE );
 152     add_integer( CFG_PREFIX "width", 0, NULL, WIDTH_TEXT,
 153                  WIDTH_LONGTEXT, VLC_TRUE );
 154     add_integer( CFG_PREFIX "height", 0, NULL, HEIGHT_TEXT,
 155                  HEIGHT_LONGTEXT, VLC_TRUE );
 156     add_string( CFG_PREFIX "sar", "1:1", NULL, RATIO_TEXT,
 157                 RATIO_LONGTEXT, VLC_FALSE );
 158     add_string( CFG_PREFIX "chroma", 0, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
 159                 VLC_FALSE );
 160
 161     add_module_list( CFG_PREFIX "vfilter", "video filter2",
 162                      NULL, NULL, VFILTER_TEXT, VFILTER_LONGTEXT, VLC_FALSE );
 163
 164     set_callbacks( Open, Close );
 165
 166     var_Create( p_module->p_libvlc_global, "mosaic-lock", VLC_VAR_MUTEX );
 167 vlc_module_end();
 168
 169 static const char *ppsz_sout_options[] = {
 170     "id", "width", "height", "sar", "vfilter", "chroma", NULL
 171 };
 172
 173 /*****************************************************************************
 174  * Open
 175  *****************************************************************************/
 176 static int Open( vlc_object_t *p_this )
 177 {
 178     sout_stream_t        *p_stream = (sout_stream_t *)p_this;
 179     sout_stream_sys_t    *p_sys;
 180     vlc_object_t         *p_libvlc_global = p_this->p_libvlc_global;
 181     vlc_value_t           val;
 182
 183     config_ChainParse( p_stream, CFG_PREFIX, ppsz_sout_options,
 184                        p_stream->p_cfg );
 185
 186     p_sys = malloc( sizeof( sout_stream_sys_t ) );
 187     if( !p_sys )
 188     {
 189         return VLC_ENOMEM;
 190     }
 191
 192     p_stream->p_sys = p_sys;
 193     p_sys->b_inited = VLC_FALSE;
 194
 195     var_Get( p_libvlc_global, "mosaic-lock", &val );
 196     p_sys->p_lock = val.p_address;
 197
 198     var_Get( p_stream, CFG_PREFIX "id", &val );
 199     p_sys->psz_id = val.psz_string;
 200
 201     p_sys->i_height =
 202         var_CreateGetIntegerCommand( p_stream, CFG_PREFIX "height" );
 203     var_AddCallback( p_stream, CFG_PREFIX "height", MosaicBridgeCallback,
 204                      p_stream );
 205
 206     p_sys->i_width =
 207         var_CreateGetIntegerCommand( p_stream, CFG_PREFIX "width" );
 208     var_AddCallback( p_stream, CFG_PREFIX "width", MosaicBridgeCallback,
 209                      p_stream );
 210
 211     var_Get( p_stream, CFG_PREFIX "sar", &val );
 212     if ( val.psz_string )
 213     {
 214         char *psz_parser = strchr( val.psz_string, ':' );
 215
 216         if( psz_parser )
 217         {
 218             *psz_parser++ = '\0';
 219             p_sys->i_sar_num = atoi( val.psz_string );
 220             p_sys->i_sar_den = atoi( psz_parser );
 221             vlc_ureduce( &p_sys->i_sar_num, &p_sys->i_sar_den,
 222                          p_sys->i_sar_num, p_sys->i_sar_den, 0 );
 223         }
 224         else
 225         {
 226             msg_Warn( p_stream, "bad aspect ratio %s", val.psz_string );
 227             p_sys->i_sar_num = p_sys->i_sar_den = 1;
 228         }
 229
 230         free( val.psz_string );
 231     }
 232     else
 233     {
 234         p_sys->i_sar_num = p_sys->i_sar_den = 1;
 235     }
 236
 237     p_sys->i_chroma = 0;
 238     val.psz_string = var_GetNonEmptyString( p_stream, CFG_PREFIX "chroma" );
 239     if( val.psz_string && strlen( val.psz_string ) >= 4 )
 240     {
 241         memcpy( &p_sys->i_chroma, val.psz_string, 4 );
 242         msg_Dbg( p_stream, "Forcing image chroma to 0x%.8x (%4.4s)", p_sys->i_chroma, (char*)&p_sys->i_chroma );
 243     }
 244
 245     p_stream->pf_add    = Add;
 246     p_stream->pf_del    = Del;
 247     p_stream->pf_send   = Send;
 248
 249     p_stream->p_sout->i_out_pace_nocontrol++;
 250
 251     return VLC_SUCCESS;
 252 }
 253
 254 /*****************************************************************************
 255  * Close
 256  *****************************************************************************/
 257 static void Close( vlc_object_t * p_this )
 258 {
 259     sout_stream_t     *p_stream = (sout_stream_t*)p_this;
 260     sout_stream_sys_t *p_sys = p_stream->p_sys;
 261
 262     p_stream->p_sout->i_out_pace_nocontrol--;
 263
 264     if ( p_sys->psz_id )
 265         free( p_sys->psz_id );
 266
 267     free( p_sys );
 268 }
 269
 270 static sout_stream_id_t * Add( sout_stream_t *p_stream, es_format_t *p_fmt )
 271 {
 272     sout_stream_sys_t *p_sys = p_stream->p_sys;
 273     bridge_t *p_bridge;
 274     bridged_es_t *p_es;
 275     char *psz_chain, *psz_parser;
 276     int i;
 277
 278     if ( p_sys->b_inited )
 279     {
 280         return NULL;
 281     }
 282
 283     /* Create decoder object */
 284     p_sys->p_decoder = vlc_object_create( p_stream, VLC_OBJECT_DECODER );
 285     vlc_object_attach( p_sys->p_decoder, p_stream );
 286     p_sys->p_decoder->p_module = NULL;
 287     p_sys->p_decoder->fmt_in = *p_fmt;
 288     p_sys->p_decoder->b_pace_control = VLC_FALSE;
 289     p_sys->p_decoder->fmt_out = p_sys->p_decoder->fmt_in;
 290     p_sys->p_decoder->fmt_out.i_extra = 0;
 291     p_sys->p_decoder->fmt_out.p_extra = 0;
 292     p_sys->p_decoder->pf_decode_video = 0;
 293     p_sys->p_decoder->pf_vout_buffer_new = video_new_buffer_decoder;
 294     p_sys->p_decoder->pf_vout_buffer_del = video_del_buffer_decoder;
 295     p_sys->p_decoder->pf_picture_link    = video_link_picture_decoder;
 296     p_sys->p_decoder->pf_picture_unlink  = video_unlink_picture_decoder;
 297     p_sys->p_decoder->p_owner = malloc( sizeof(decoder_owner_sys_t) );
 298     for( i = 0; i < PICTURE_RING_SIZE; i++ )
 299         p_sys->p_decoder->p_owner->pp_pics[i] = 0;
 300     p_sys->p_decoder->p_owner->video = p_fmt->video;
 301     //p_sys->p_decoder->p_cfg = p_sys->p_video_cfg;
 302
 303     p_sys->p_decoder->p_module =
 304         module_Need( p_sys->p_decoder, "decoder", "$codec", 0 );
 305
 306     if( !p_sys->p_decoder->p_module )
 307     {
 308         msg_Err( p_stream, "cannot find decoder" );
 309         vlc_object_detach( p_sys->p_decoder );
 310         vlc_object_destroy( p_sys->p_decoder );
 311         return NULL;
 312     }
 313
 314     p_sys->b_inited = VLC_TRUE;
 315     vlc_mutex_lock( p_sys->p_lock );
 316
 317     p_bridge = GetBridge( p_stream );
 318     if ( p_bridge == NULL )
 319     {
 320         vlc_object_t *p_libvlc_global = p_stream->p_libvlc_global;
 321         vlc_value_t val;
 322
 323         p_bridge = malloc( sizeof( bridge_t ) );
 324
 325         var_Create( p_libvlc_global, "mosaic-struct", VLC_VAR_ADDRESS );
 326         val.p_address = p_bridge;
 327         var_Set( p_libvlc_global, "mosaic-struct", val );
 328
 329         p_bridge->i_es_num = 0;
 330         p_bridge->pp_es = NULL;
 331     }
 332
 333     for ( i = 0; i < p_bridge->i_es_num; i++ )
 334     {
 335         if ( p_bridge->pp_es[i]->b_empty )
 336             break;
 337     }
 338
 339     if ( i == p_bridge->i_es_num )
 340     {
 341         p_bridge->pp_es = realloc( p_bridge->pp_es,
 342                                    (p_bridge->i_es_num + 1)
 343                                      * sizeof(bridged_es_t *) );
 344         p_bridge->i_es_num++;
 345         p_bridge->pp_es[i] = malloc( sizeof(bridged_es_t) );
 346     }
 347
 348     p_sys->p_es = p_es = p_bridge->pp_es[i];
 349
 350     //p_es->fmt = *p_fmt;
 351     p_es->psz_id = p_sys->psz_id;
 352     p_es->p_picture = NULL;
 353     p_es->pp_last = &p_es->p_picture;
 354     p_es->b_empty = VLC_FALSE;
 355
 356     vlc_mutex_unlock( p_sys->p_lock );
 357
 358     if ( p_sys->i_height || p_sys->i_width )
 359     {
 360         p_sys->p_image = image_HandlerCreate( p_stream );
 361     }
 362     else
 363     {
 364         p_sys->p_image = NULL;
 365     }
 366
 367     msg_Dbg( p_stream, "mosaic bridge id=%s pos=%d", p_es->psz_id, i );
 368
 369     /* Create user specified video filters */
 370     psz_chain = var_GetNonEmptyString( p_stream, CFG_PREFIX "vfilter" );
 371     printf("psz_chain: \e[33;1m%s\e[0m\n", psz_chain );
 372     {
 373         config_chain_t *p_cfg;
 374         for( p_cfg = p_stream->p_cfg; p_cfg != NULL; p_cfg = p_cfg->p_next )
 375         {
 376             printf(" - %s\n", p_cfg->psz_value );
 377         }
 378     }
 379     p_sys->i_vfilters = 0;
 380     p_sys->pp_vfilters = NULL;
 381     psz_parser = psz_chain;
 382     while( psz_parser && *psz_parser )
 383     {
 384         config_chain_t *p_cfg;
 385         char *psz_name;
 386         filter_t **pp_vfilter;
 387         psz_parser = config_ChainCreate( &psz_name, &p_cfg, psz_parser );
 388         p_sys->i_vfilters++;
 389         p_sys->pp_vfilters =
 390             (filter_t **)realloc( p_sys->pp_vfilters,
 391                                   p_sys->i_vfilters * sizeof(filter_t *) );
 392         pp_vfilter = p_sys->pp_vfilters+(p_sys->i_vfilters - 1);
 393         *pp_vfilter = vlc_object_create( p_stream, VLC_OBJECT_FILTER );
 394         vlc_object_attach( *pp_vfilter, p_stream );
 395         (*pp_vfilter)->pf_vout_buffer_new = video_new_buffer_filter;
 396         (*pp_vfilter)->pf_vout_buffer_del = video_del_buffer_filter;
 397         (*pp_vfilter)->fmt_in = p_sys->p_decoder->fmt_out;
 398         if( p_sys->i_chroma )
 399             (*pp_vfilter)->fmt_in.video.i_chroma = p_sys->i_chroma;
 400         (*pp_vfilter)->fmt_out = (*pp_vfilter)->fmt_in;
 401         (*pp_vfilter)->p_cfg = p_cfg;
 402         (*pp_vfilter)->p_module =
 403             module_Need( *pp_vfilter, "video filter2", psz_name, VLC_TRUE );
 404         if( (*pp_vfilter)->p_module )
 405         {
 406             /* It worked! */
 407             (*pp_vfilter)->p_owner = (filter_owner_sys_t *)
 408                 p_sys->p_decoder->p_owner;
 409             msg_Err( p_stream, "Added video filter %s to the chain",
 410                      psz_name );
 411         }
 412         else
 413         {
 414             /* Crap ... we didn't find a filter */
 415             msg_Warn( p_stream,
 416                       "no video filter matching name \"%s\" found",
 417                       psz_name );
 418             vlc_object_detach( *pp_vfilter );
 419             vlc_object_destroy( *pp_vfilter );
 420             p_sys->i_vfilters--;
 421         }
 422         //if( psz_parser && *psz_parser ) psz_parser++;
 423         printf("\n\npsz_parser: %s\n\n", psz_parser );
 424     }
 425     free( psz_chain );
 426
 427     return (sout_stream_id_t *)p_sys;
 428 }
 429
 430 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
 431 {
 432     sout_stream_sys_t *p_sys = p_stream->p_sys;
 433     bridge_t *p_bridge;
 434     bridged_es_t *p_es;
 435     vlc_bool_t b_last_es = VLC_TRUE;
 436     filter_t **pp_vfilter, **pp_end;
 437     int i;
 438
 439     if ( !p_sys->b_inited )
 440     {
 441         return VLC_SUCCESS;
 442     }
 443
 444     if ( p_sys->p_decoder != NULL )
 445     {
 446         picture_t **pp_ring = p_sys->p_decoder->p_owner->pp_pics;
 447
 448         if( p_sys->p_decoder->p_module )
 449             module_Unneed( p_sys->p_decoder, p_sys->p_decoder->p_module );
 450         vlc_object_detach( p_sys->p_decoder );
 451         vlc_object_destroy( p_sys->p_decoder );
 452
 453         for( i = 0; i < PICTURE_RING_SIZE; i++ )
 454         {
 455             if ( pp_ring[i] != NULL )
 456             {
 457                 if ( pp_ring[i]->p_data_orig != NULL )
 458                     free( pp_ring[i]->p_data_orig );
 459                 free( pp_ring[i]->p_sys );
 460                 free( pp_ring[i] );
 461             }
 462         }
 463     }
 464
 465     /* Destroy user specified video filters */
 466     pp_vfilter = p_sys->pp_vfilters;
 467     pp_end = pp_vfilter + p_sys->i_vfilters;
 468     for( ; pp_vfilter < pp_end; pp_vfilter++ )
 469     {
 470         vlc_object_detach( *pp_vfilter );
 471         if( (*pp_vfilter)->p_module )
 472             module_Unneed( *pp_vfilter, (*pp_vfilter)->p_module );
 473         vlc_object_destroy( *pp_vfilter );
 474     }
 475     free( p_sys->pp_vfilters );
 476
 477     vlc_mutex_lock( p_sys->p_lock );
 478
 479     p_bridge = GetBridge( p_stream );
 480     p_es = p_sys->p_es;
 481
 482     p_es->b_empty = VLC_TRUE;
 483     while ( p_es->p_picture )
 484     {
 485         picture_t *p_next = p_es->p_picture->p_next;
 486         p_es->p_picture->pf_release( p_es->p_picture );
 487         p_es->p_picture = p_next;
 488     }
 489
 490     for ( i = 0; i < p_bridge->i_es_num; i++ )
 491     {
 492         if ( !p_bridge->pp_es[i]->b_empty )
 493         {
 494             b_last_es = VLC_FALSE;
 495             break;
 496         }
 497     }
 498
 499     if ( b_last_es )
 500     {
 501         vlc_object_t *p_libvlc_global = p_stream->p_libvlc_global;
 502         for ( i = 0; i < p_bridge->i_es_num; i++ )
 503             free( p_bridge->pp_es[i] );
 504         free( p_bridge->pp_es );
 505         free( p_bridge );
 506         var_Destroy( p_libvlc_global, "mosaic-struct" );
 507     }
 508
 509     vlc_mutex_unlock( p_sys->p_lock );
 510
 511     if ( p_sys->p_image )
 512     {
 513         image_HandlerDelete( p_sys->p_image );
 514     }
 515
 516     p_sys->b_inited = VLC_FALSE;
 517
 518     return VLC_SUCCESS;
 519 }
 520
 521 /*****************************************************************************
 522  * PushPicture : push a picture in the mosaic-struct structure
 523  *****************************************************************************/
 524 static void PushPicture( sout_stream_t *p_stream, picture_t *p_picture )
 525 {
 526     sout_stream_sys_t *p_sys = p_stream->p_sys;
 527     bridged_es_t *p_es = p_sys->p_es;
 528
 529     vlc_mutex_lock( p_sys->p_lock );
 530
 531     *p_es->pp_last = p_picture;
 532     p_picture->p_next = NULL;
 533     p_es->pp_last = &p_picture->p_next;
 534
 535     vlc_mutex_unlock( p_sys->p_lock );
 536 }
 537
 538 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
 539                  block_t *p_buffer )
 540 {
 541     sout_stream_sys_t *p_sys = p_stream->p_sys;
 542     picture_t *p_pic;
 543
 544     if ( (sout_stream_sys_t *)id != p_sys )
 545     {
 546         block_ChainRelease( p_buffer );
 547         return VLC_SUCCESS;
 548     }
 549
 550     while ( (p_pic = p_sys->p_decoder->pf_decode_video( p_sys->p_decoder,
 551                                                         &p_buffer )) )
 552     {
 553         picture_t *p_new_pic;
 554
 555         if( p_sys->i_height || p_sys->i_width )
 556         {
 557             video_format_t fmt_out, fmt_in;
 558
 559             memset( &fmt_in, 0, sizeof(video_format_t) );
 560             memset( &fmt_out, 0, sizeof(video_format_t) );
 561             fmt_in = p_sys->p_decoder->fmt_out.video;
 562
 563
 564             if( p_sys->i_chroma )
 565                 fmt_out.i_chroma = p_sys->i_chroma;
 566             else
 567                 fmt_out.i_chroma = VLC_FOURCC('I','4','2','0');
 568
 569             if ( !p_sys->i_height )
 570             {
 571                 fmt_out.i_width = p_sys->i_width;
 572                 fmt_out.i_height = (p_sys->i_width * VOUT_ASPECT_FACTOR
 573                     * p_sys->i_sar_num / p_sys->i_sar_den / fmt_in.i_aspect)
 574                       & ~0x1;
 575             }
 576             else if ( !p_sys->i_width )
 577             {
 578                 fmt_out.i_height = p_sys->i_height;
 579                 fmt_out.i_width = (p_sys->i_height * fmt_in.i_aspect
 580                     * p_sys->i_sar_den / p_sys->i_sar_num / VOUT_ASPECT_FACTOR)
 581                       & ~0x1;
 582             }
 583             else
 584             {
 585                 fmt_out.i_width = p_sys->i_width;
 586                 fmt_out.i_height = p_sys->i_height;
 587             }
 588             fmt_out.i_visible_width = fmt_out.i_width;
 589             fmt_out.i_visible_height = fmt_out.i_height;
 590
 591             p_new_pic = image_Convert( p_sys->p_image,
 592                                        p_pic, &fmt_in, &fmt_out );
 593             if ( p_new_pic == NULL )
 594             {
 595                 msg_Err( p_stream, "image conversion failed" );
 596                 continue;
 597             }
 598         }
 599         else
 600         {
 601             p_new_pic = (picture_t*)malloc( sizeof(picture_t) );
 602             /* TODO: chroma conversion if needed */
 603             vout_AllocatePicture( p_stream, p_new_pic, p_pic->format.i_chroma,
 604                                   p_pic->format.i_width, p_pic->format.i_height,
 605                                   p_sys->p_decoder->fmt_out.video.i_aspect );
 606
 607             vout_CopyPicture( p_stream, p_new_pic, p_pic );
 608         }
 609
 610         p_new_pic->i_refcount = 1;
 611         p_new_pic->i_status = DESTROYED_PICTURE;
 612         p_new_pic->i_type   = DIRECT_PICTURE;
 613         p_new_pic->p_sys = (picture_sys_t *)p_new_pic->pf_release;
 614         p_new_pic->pf_release = ReleasePicture;
 615         p_new_pic->date = p_pic->date;
 616         p_pic->pf_release( p_pic );
 617
 618         if( p_sys->pp_vfilters )
 619         {
 620             /* Apply user specified video filters */
 621             filter_t **pp_vfilter = p_sys->pp_vfilters;
 622             filter_t **pp_end = pp_vfilter + p_sys->i_vfilters;
 623             for( ; pp_vfilter < pp_end; pp_vfilter++ )
 624             {
 625                 (*pp_vfilter)->fmt_in.i_codec = p_new_pic->format.i_chroma;
 626                 (*pp_vfilter)->fmt_out.i_codec = p_new_pic->format.i_chroma;
 627                 (*pp_vfilter)->fmt_in.video = p_new_pic->format;
 628                 (*pp_vfilter)->fmt_out.video = p_new_pic->format;
 629                 p_new_pic = (*pp_vfilter)->pf_video_filter( *pp_vfilter,
 630                                                              p_new_pic );
 631                 if( !p_new_pic )
 632                 {
 633                     msg_Err( p_stream, "video filter failed" );
 634                     break;
 635                 }
 636             }
 637             if( !p_new_pic ) continue;
 638         }
 639
 640         PushPicture( p_stream, p_new_pic );
 641     }
 642
 643     return VLC_SUCCESS;
 644 }
 645
 646 struct picture_sys_t
 647 {
 648     vlc_object_t *p_owner;
 649     vlc_bool_t b_dead;
 650 };
 651
 652 static void video_release_buffer_decoder( picture_t *p_pic )
 653 {
 654     if( p_pic && !p_pic->i_refcount && p_pic->pf_release && p_pic->p_sys )
 655     {
 656         video_del_buffer_decoder( (decoder_t *)p_pic->p_sys->p_owner, p_pic );
 657     }
 658     else if( p_pic && p_pic->i_refcount > 0 ) p_pic->i_refcount--;
 659 }
 660
 661 static void video_release_buffer_filter( picture_t *p_pic )
 662 {
 663     if( p_pic && !p_pic->i_refcount && p_pic->pf_release && p_pic->p_sys )
 664     {
 665         video_del_buffer_filter( (filter_t *)p_pic->p_sys->p_owner, p_pic );
 666     }
 667     else if( p_pic && p_pic->i_refcount > 0 ) p_pic->i_refcount--;
 668 }
 669
 670 inline static picture_t *video_new_buffer_decoder( decoder_t *p_dec )
 671 {
 672     return video_new_buffer( VLC_OBJECT( p_dec ),
 673                              (decoder_owner_sys_t *)p_dec->p_owner,
 674                              &p_dec->fmt_out,
 675                              video_release_buffer_decoder );
 676 }
 677
 678 inline static picture_t *video_new_buffer_filter( filter_t *p_filter )
 679 {
 680     return video_new_buffer( VLC_OBJECT( p_filter ),
 681                              (decoder_owner_sys_t *)p_filter->p_owner,
 682                              &p_filter->fmt_out,
 683                              video_release_buffer_filter );
 684 }
 685
 686 static picture_t *video_new_buffer( vlc_object_t *p_this,
 687                                     decoder_owner_sys_t *p_sys,
 688                                     es_format_t *fmt_out,
 689                                     void ( *pf_release )( picture_t * ) )
 690 {
 691     picture_t **pp_ring = p_sys->pp_pics;
 692     picture_t *p_pic;
 693     int i;
 694
 695     if( fmt_out->video.i_width != p_sys->video.i_width ||
 696         fmt_out->video.i_height != p_sys->video.i_height ||
 697         fmt_out->video.i_chroma != p_sys->video.i_chroma ||
 698         fmt_out->video.i_aspect != p_sys->video.i_aspect )
 699     {
 700         if( !fmt_out->video.i_sar_num ||
 701             !fmt_out->video.i_sar_den )
 702         {
 703             fmt_out->video.i_sar_num =
 704                 fmt_out->video.i_aspect * fmt_out->video.i_height;
 705
 706             fmt_out->video.i_sar_den =
 707                 VOUT_ASPECT_FACTOR * fmt_out->video.i_width;
 708         }
 709
 710         vlc_ureduce( &fmt_out->video.i_sar_num,
 711                      &fmt_out->video.i_sar_den,
 712                      fmt_out->video.i_sar_num,
 713                      fmt_out->video.i_sar_den, 0 );
 714
 715         if( !fmt_out->video.i_visible_width ||
 716             !fmt_out->video.i_visible_height )
 717         {
 718             fmt_out->video.i_visible_width = fmt_out->video.i_width;
 719             fmt_out->video.i_visible_height = fmt_out->video.i_height;
 720         }
 721
 722         fmt_out->video.i_chroma = fmt_out->i_codec;
 723         p_sys->video = fmt_out->video;
 724
 725         for( i = 0; i < PICTURE_RING_SIZE; i++ )
 726         {
 727             if ( pp_ring[i] != NULL )
 728             {
 729                 if ( pp_ring[i]->i_status == DESTROYED_PICTURE )
 730                 {
 731                     if ( pp_ring[i]->p_data_orig != NULL )
 732                         free( pp_ring[i]->p_data_orig );
 733                     free( pp_ring[i]->p_sys );
 734                     free( pp_ring[i] );
 735                 }
 736                 else
 737                 {
 738                     pp_ring[i]->p_sys->b_dead = VLC_TRUE;
 739                 }
 740                 pp_ring[i] = NULL;
 741             }
 742         }
 743     }
 744
 745     /* Find an empty space in the picture ring buffer */
 746     for( i = 0; i < PICTURE_RING_SIZE; i++ )
 747     {
 748         if( pp_ring[i] != NULL && pp_ring[i]->i_status == DESTROYED_PICTURE )
 749         {
 750             pp_ring[i]->i_status = RESERVED_PICTURE;
 751             return pp_ring[i];
 752         }
 753     }
 754     for( i = 0; i < PICTURE_RING_SIZE; i++ )
 755     {
 756         if( pp_ring[i] == NULL ) break;
 757     }
 758
 759     if( i == PICTURE_RING_SIZE )
 760     {
 761         msg_Err( p_this, "decoder/filter is leaking pictures, "
 762                  "resetting its ring buffer" );
 763
 764         for( i = 0; i < PICTURE_RING_SIZE; i++ )
 765         {
 766             pp_ring[i]->pf_release( pp_ring[i] );
 767         }
 768
 769         i = 0;
 770     }
 771
 772     p_pic = malloc( sizeof(picture_t) );
 773     fmt_out->video.i_chroma = fmt_out->i_codec;
 774     vout_AllocatePicture( p_this, p_pic,
 775                           fmt_out->video.i_chroma,
 776                           fmt_out->video.i_width,
 777                           fmt_out->video.i_height,
 778                           fmt_out->video.i_aspect );
 779
 780     if( !p_pic->i_planes )
 781     {
 782         free( p_pic );
 783         return NULL;
 784     }
 785
 786     p_pic->pf_release = pf_release;
 787     p_pic->p_sys = malloc( sizeof(picture_sys_t) );
 788     p_pic->p_sys->p_owner = p_this;
 789     p_pic->p_sys->b_dead = VLC_FALSE;
 790     p_pic->i_status = RESERVED_PICTURE;
 791
 792     pp_ring[i] = p_pic;
 793
 794     return p_pic;
 795 }
 796
 797 inline static void video_del_buffer_decoder( decoder_t *p_this,
 798                                              picture_t *p_pic )
 799 {
 800     video_del_buffer( VLC_OBJECT( p_this ), p_pic );
 801 }
 802
 803 inline static void video_del_buffer_filter( filter_t *p_this,
 804                                             picture_t *p_pic )
 805 {
 806     video_del_buffer( VLC_OBJECT( p_this ), p_pic );
 807 }
 808
 809 static void video_del_buffer( vlc_object_t *p_this, picture_t *p_pic )
 810 {
 811     p_pic->i_refcount = 0;
 812     p_pic->i_status = DESTROYED_PICTURE;
 813     if ( p_pic->p_sys->b_dead )
 814     {
 815         if ( p_pic->p_data_orig != NULL )
 816             free( p_pic->p_data_orig );
 817         free( p_pic->p_sys );
 818         free( p_pic );
 819     }
 820 }
 821
 822 static void video_link_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
 823 {
 824     p_pic->i_refcount++;
 825 }
 826
 827 static void video_unlink_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
 828 {
 829     video_release_buffer_decoder( p_pic );
 830 }
 831
 832
 833 /**********************************************************************
 834  * Callback to update (some) params on the fly
 835  **********************************************************************/
 836 static int MosaicBridgeCallback( vlc_object_t *p_this, char const *psz_var,
 837                                  vlc_value_t oldval, vlc_value_t newval,
 838                                  void *p_data )
 839 {
 840     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 841     sout_stream_sys_t *p_sys = p_stream->p_sys;
 842     int i_ret = VLC_SUCCESS;
 843
 844 #define VAR_IS( a ) !strcmp( psz_var, CFG_PREFIX a )
 845     if( VAR_IS( "height" ) )
 846     {
 847         /* We create the handler before updating the value in p_sys
 848          * so we don't have to worry about locking */
 849         if( !p_sys->p_image && newval.i_int )
 850             p_sys->p_image = image_HandlerCreate( p_stream );
 851         p_sys->i_height = newval.i_int;
 852     }
 853     else if( VAR_IS( "width" ) )
 854     {
 855         /* We create the handler before updating the value in p_sys
 856          * so we don't have to worry about locking */
 857         if( !p_sys->p_image && newval.i_int )
 858             p_sys->p_image = image_HandlerCreate( p_stream );
 859         p_sys->i_width = newval.i_int;
 860     }
 861 #undef VAR_IS
 862
 863     return i_ret;
 864 }