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
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32
  33 #include <errno.h>                                                 /* ENOMEM */
  34
  35 #include <vlc_common.h>
  36 #include <vlc_plugin.h>
  37 #include <vlc_sout.h>
  38 #include <vlc_block.h>
  39 #include <vlc_codec.h>
  40
  41 #include <vlc_image.h>
  42 #include <vlc_filter.h>
  43
  44 #include "../video_filter/mosaic.h"
  45
  46 #include <assert.h>
  47
  48 /*****************************************************************************
  49  * Local structures
  50  *****************************************************************************/
  51 struct sout_stream_sys_t
  52 {
  53     bridged_es_t *p_es;
  54     vlc_mutex_t *p_lock;
  55
  56     decoder_t       *p_decoder;
  57     image_handler_t *p_image; /* filter for resizing */
  58     int i_height, i_width;
  59     unsigned int i_sar_num, i_sar_den;
  60     char *psz_id;
  61     bool b_inited;
  62
  63     int i_chroma; /* force image format chroma */
  64
  65     filter_chain_t *p_vf2;
  66 };
  67
  68 #define PICTURE_RING_SIZE 4
  69 struct decoder_owner_sys_t
  70 {
  71     picture_t *pp_pics[PICTURE_RING_SIZE];
  72
  73     /* Current format in use by the output */
  74     video_format_t video;
  75 };
  76
  77 typedef void (* pf_release_t)( picture_t * );
  78 static void ReleasePicture( picture_t *p_pic )
  79 {
  80     assert( p_pic );
  81
  82     if( --p_pic->i_refcount > 0 )
  83         return;
  84
  85     assert( p_pic->p_sys );
  86     if( p_pic->p_sys )
  87     {
  88         pf_release_t pf_release = (pf_release_t)p_pic->p_sys;
  89         p_pic->p_sys = NULL;
  90         pf_release( p_pic );
  91     }
  92     else
  93     {
  94         free( p_pic->p_data_orig );
  95         free( p_pic );
  96     }
  97 }
  98
  99 /*****************************************************************************
 100  * Local prototypes
 101  *****************************************************************************/
 102 static int  Open    ( vlc_object_t * );
 103 static void Close   ( vlc_object_t * );
 104 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
 105 static int               Del ( sout_stream_t *, sout_stream_id_t * );
 106 static int               Send( sout_stream_t *, sout_stream_id_t *, block_t * );
 107
 108 inline static void video_del_buffer_decoder( decoder_t *, picture_t * );
 109 inline static void video_del_buffer_filter( filter_t *, picture_t * );
 110 static void video_del_buffer( picture_t * );
 111
 112 inline static picture_t *video_new_buffer_decoder( decoder_t * );
 113 inline static picture_t *video_new_buffer_filter( filter_t * );
 114 static picture_t *video_new_buffer( vlc_object_t *, decoder_owner_sys_t *,
 115                                     es_format_t *, void (*)( picture_t * ) );
 116
 117 static void video_link_picture_decoder( decoder_t *, picture_t * );
 118 static void video_unlink_picture_decoder( decoder_t *, picture_t * );
 119
 120 static int HeightCallback( vlc_object_t *, char const *,
 121                            vlc_value_t, vlc_value_t, void * );
 122 static int WidthCallback( vlc_object_t *, char const *,
 123                           vlc_value_t, vlc_value_t, void * );
 124 static int alphaCallback( vlc_object_t *, char const *,
 125                           vlc_value_t, vlc_value_t, void * );
 126 static int xCallback( vlc_object_t *, char const *,
 127                       vlc_value_t, vlc_value_t, void * );
 128 static int yCallback( vlc_object_t *, char const *,
 129                       vlc_value_t, vlc_value_t, void * );
 130
 131 /*****************************************************************************
 132  * Module descriptor
 133  *****************************************************************************/
 134 #define ID_TEXT N_("ID")
 135 #define ID_LONGTEXT N_( \
 136     "Specify an identifier string for this subpicture" )
 137
 138 #define WIDTH_TEXT N_("Video width")
 139 #define WIDTH_LONGTEXT N_( \
 140     "Output video width." )
 141 #define HEIGHT_TEXT N_("Video height")
 142 #define HEIGHT_LONGTEXT N_( \
 143     "Output video height." )
 144 #define RATIO_TEXT N_("Sample aspect ratio")
 145 #define RATIO_LONGTEXT N_( \
 146     "Sample aspect ratio of the destination (1:1, 3:4, 2:3)." )
 147
 148 #define VFILTER_TEXT N_("Video filter")
 149 #define VFILTER_LONGTEXT N_( \
 150     "Video filters will be applied to the video stream." )
 151
 152 #define CHROMA_TEXT N_("Image chroma")
 153 #define CHROMA_LONGTEXT N_( \
 154     "Force the use of a specific chroma. Use YUVA if you're planning " \
 155     "to use the Alphamask or Bluescreen video filter." )
 156
 157 #define ALPHA_TEXT N_("Transparency")
 158 #define ALPHA_LONGTEXT N_( \
 159     "Transparency of the mosaic picture." )
 160
 161 #define X_TEXT N_("X offset")
 162 #define X_LONGTEXT N_( \
 163     "X coordinate of the upper left corner in the mosaic if non negative." )
 164
 165 #define Y_TEXT N_("Y offset")
 166 #define Y_LONGTEXT N_( \
 167     "Y coordinate of the upper left corner in the mosaic if non negative." )
 168
 169 #define CFG_PREFIX "sout-mosaic-bridge-"
 170
 171 vlc_module_begin();
 172     set_shortname( N_( "Mosaic bridge" ) );
 173     set_description(N_("Mosaic bridge stream output") );
 174     set_capability( "sout stream", 0 );
 175     add_shortcut( "mosaic-bridge" );
 176
 177     add_string( CFG_PREFIX "id", "Id", NULL, ID_TEXT, ID_LONGTEXT,
 178                 false );
 179     add_integer( CFG_PREFIX "width", 0, NULL, WIDTH_TEXT,
 180                  WIDTH_LONGTEXT, true );
 181     add_integer( CFG_PREFIX "height", 0, NULL, HEIGHT_TEXT,
 182                  HEIGHT_LONGTEXT, true );
 183     add_string( CFG_PREFIX "sar", "1:1", NULL, RATIO_TEXT,
 184                 RATIO_LONGTEXT, false );
 185     add_string( CFG_PREFIX "chroma", 0, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
 186                 false );
 187
 188     add_module_list( CFG_PREFIX "vfilter", "video filter2",
 189                      NULL, NULL, VFILTER_TEXT, VFILTER_LONGTEXT, false );
 190
 191     add_integer_with_range( CFG_PREFIX "alpha", 255, 0, 255, NULL,
 192                             ALPHA_TEXT, ALPHA_LONGTEXT, false );
 193     add_integer( CFG_PREFIX "x", -1, NULL, X_TEXT, X_LONGTEXT, false );
 194     add_integer( CFG_PREFIX "y", -1, NULL, Y_TEXT, Y_LONGTEXT, false );
 195
 196     set_callbacks( Open, Close );
 197 vlc_module_end();
 198
 199 static const char *const ppsz_sout_options[] = {
 200     "id", "width", "height", "sar", "vfilter", "chroma", "alpha", "x", "y", NULL
 201 };
 202
 203 /*****************************************************************************
 204  * Open
 205  *****************************************************************************/
 206 static int Open( vlc_object_t *p_this )
 207 {
 208     sout_stream_t        *p_stream = (sout_stream_t *)p_this;
 209     sout_stream_sys_t    *p_sys;
 210     vlc_object_t         *p_libvlc = VLC_OBJECT( p_this->p_libvlc );
 211     vlc_value_t           val;
 212
 213     config_ChainParse( p_stream, CFG_PREFIX, ppsz_sout_options,
 214                        p_stream->p_cfg );
 215
 216     p_sys = malloc( sizeof( sout_stream_sys_t ) );
 217     if( !p_sys )
 218     {
 219         return VLC_ENOMEM;
 220     }
 221
 222     p_stream->p_sys = p_sys;
 223     p_sys->b_inited = false;
 224
 225     var_Create( p_libvlc, "mosaic-lock", VLC_VAR_MUTEX );
 226     var_Get( p_libvlc, "mosaic-lock", &val );
 227     p_sys->p_lock = val.p_address;
 228
 229     var_Get( p_stream, CFG_PREFIX "id", &val );
 230     p_sys->psz_id = val.psz_string;
 231
 232     p_sys->i_height =
 233         var_CreateGetIntegerCommand( p_stream, CFG_PREFIX "height" );
 234     var_AddCallback( p_stream, CFG_PREFIX "height", HeightCallback, p_stream );
 235
 236     p_sys->i_width =
 237         var_CreateGetIntegerCommand( p_stream, CFG_PREFIX "width" );
 238     var_AddCallback( p_stream, CFG_PREFIX "width", WidthCallback, p_stream );
 239
 240     var_Get( p_stream, CFG_PREFIX "sar", &val );
 241     if ( val.psz_string )
 242     {
 243         char *psz_parser = strchr( val.psz_string, ':' );
 244
 245         if( psz_parser )
 246         {
 247             *psz_parser++ = '\0';
 248             p_sys->i_sar_num = atoi( val.psz_string );
 249             p_sys->i_sar_den = atoi( psz_parser );
 250             vlc_ureduce( &p_sys->i_sar_num, &p_sys->i_sar_den,
 251                          p_sys->i_sar_num, p_sys->i_sar_den, 0 );
 252         }
 253         else
 254         {
 255             msg_Warn( p_stream, "bad aspect ratio %s", val.psz_string );
 256             p_sys->i_sar_num = p_sys->i_sar_den = 1;
 257         }
 258
 259         free( val.psz_string );
 260     }
 261     else
 262     {
 263         p_sys->i_sar_num = p_sys->i_sar_den = 1;
 264     }
 265
 266     p_sys->i_chroma = 0;
 267     val.psz_string = var_GetNonEmptyString( p_stream, CFG_PREFIX "chroma" );
 268     if( val.psz_string && strlen( val.psz_string ) >= 4 )
 269     {
 270         memcpy( &p_sys->i_chroma, val.psz_string, 4 );
 271         msg_Dbg( p_stream, "Forcing image chroma to 0x%.8x (%4.4s)", p_sys->i_chroma, (char*)&p_sys->i_chroma );
 272     }
 273
 274 #define INT_COMMAND( a ) \
 275     var_Create( p_stream, CFG_PREFIX #a, \
 276                 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT | VLC_VAR_ISCOMMAND ); \
 277     var_AddCallback( p_stream, CFG_PREFIX #a, a ## Callback, \
 278                      p_stream );
 279     INT_COMMAND( alpha )
 280     INT_COMMAND( x )
 281     INT_COMMAND( y )
 282
 283     p_stream->pf_add    = Add;
 284     p_stream->pf_del    = Del;
 285     p_stream->pf_send   = Send;
 286
 287     p_stream->p_sout->i_out_pace_nocontrol++;
 288
 289     return VLC_SUCCESS;
 290 }
 291
 292 /*****************************************************************************
 293  * Close
 294  *****************************************************************************/
 295 static void Close( vlc_object_t * p_this )
 296 {
 297     sout_stream_t     *p_stream = (sout_stream_t*)p_this;
 298     sout_stream_sys_t *p_sys = p_stream->p_sys;
 299
 300     p_stream->p_sout->i_out_pace_nocontrol--;
 301
 302     free( p_sys->psz_id );
 303
 304     free( p_sys );
 305 }
 306
 307 static int video_filter_buffer_allocation_init( filter_t *p_filter, void *p_data )
 308 {
 309     p_filter->pf_vout_buffer_new = video_new_buffer_filter;
 310     p_filter->pf_vout_buffer_del = video_del_buffer_filter;
 311     p_filter->p_owner = p_data;
 312     return VLC_SUCCESS;
 313 }
 314
 315 static sout_stream_id_t * Add( sout_stream_t *p_stream, es_format_t *p_fmt )
 316 {
 317     sout_stream_sys_t *p_sys = p_stream->p_sys;
 318     bridge_t *p_bridge;
 319     bridged_es_t *p_es;
 320     char *psz_chain;
 321     int i;
 322
 323     if ( p_sys->b_inited )
 324     {
 325         return NULL;
 326     }
 327
 328     /* Create decoder object */
 329     p_sys->p_decoder = vlc_object_create( p_stream, VLC_OBJECT_DECODER );
 330     if( !p_sys->p_decoder )
 331         return NULL;
 332     vlc_object_attach( p_sys->p_decoder, p_stream );
 333     p_sys->p_decoder->p_module = NULL;
 334     p_sys->p_decoder->fmt_in = *p_fmt;
 335     p_sys->p_decoder->b_pace_control = false;
 336     p_sys->p_decoder->fmt_out = p_sys->p_decoder->fmt_in;
 337     p_sys->p_decoder->fmt_out.i_extra = 0;
 338     p_sys->p_decoder->fmt_out.p_extra = 0;
 339     p_sys->p_decoder->pf_decode_video = 0;
 340     p_sys->p_decoder->pf_vout_buffer_new = video_new_buffer_decoder;
 341     p_sys->p_decoder->pf_vout_buffer_del = video_del_buffer_decoder;
 342     p_sys->p_decoder->pf_picture_link    = video_link_picture_decoder;
 343     p_sys->p_decoder->pf_picture_unlink  = video_unlink_picture_decoder;
 344     p_sys->p_decoder->p_owner = malloc( sizeof(decoder_owner_sys_t) );
 345     if( !p_sys->p_decoder->p_owner )
 346     {
 347         vlc_object_detach( p_sys->p_decoder );
 348         vlc_object_release( p_sys->p_decoder );
 349         return NULL;
 350     }
 351
 352     for( i = 0; i < PICTURE_RING_SIZE; i++ )
 353         p_sys->p_decoder->p_owner->pp_pics[i] = NULL;
 354     p_sys->p_decoder->p_owner->video = p_fmt->video;
 355     //p_sys->p_decoder->p_cfg = p_sys->p_video_cfg;
 356
 357     p_sys->p_decoder->p_module =
 358         module_Need( p_sys->p_decoder, "decoder", "$codec", 0 );
 359
 360     if( !p_sys->p_decoder->p_module )
 361     {
 362         msg_Err( p_stream, "cannot find decoder" );
 363         vlc_object_detach( p_sys->p_decoder );
 364         vlc_object_release( p_sys->p_decoder );
 365         return NULL;
 366     }
 367
 368     p_sys->b_inited = true;
 369     vlc_mutex_lock( p_sys->p_lock );
 370
 371     p_bridge = GetBridge( p_stream );
 372     if ( p_bridge == NULL )
 373     {
 374         vlc_object_t *p_libvlc = VLC_OBJECT( p_stream->p_libvlc );
 375         vlc_value_t val;
 376
 377         p_bridge = malloc( sizeof( bridge_t ) );
 378
 379         var_Create( p_libvlc, "mosaic-struct", VLC_VAR_ADDRESS );
 380         val.p_address = p_bridge;
 381         var_Set( p_libvlc, "mosaic-struct", val );
 382
 383         p_bridge->i_es_num = 0;
 384         p_bridge->pp_es = NULL;
 385     }
 386
 387     for ( i = 0; i < p_bridge->i_es_num; i++ )
 388     {
 389         if ( p_bridge->pp_es[i]->b_empty )
 390             break;
 391     }
 392
 393     if ( i == p_bridge->i_es_num )
 394     {
 395         p_bridge->pp_es = realloc( p_bridge->pp_es,
 396                                    (p_bridge->i_es_num + 1)
 397                                      * sizeof(bridged_es_t *) );
 398         p_bridge->i_es_num++;
 399         p_bridge->pp_es[i] = malloc( sizeof(bridged_es_t) );
 400     }
 401
 402     p_sys->p_es = p_es = p_bridge->pp_es[i];
 403
 404     p_es->i_alpha = var_GetInteger( p_stream, CFG_PREFIX "alpha" );
 405     p_es->i_x = var_GetInteger( p_stream, CFG_PREFIX "x" );
 406     p_es->i_y = var_GetInteger( p_stream, CFG_PREFIX "y" );
 407
 408     //p_es->fmt = *p_fmt;
 409     p_es->psz_id = p_sys->psz_id;
 410     p_es->p_picture = NULL;
 411     p_es->pp_last = &p_es->p_picture;
 412     p_es->b_empty = false;
 413
 414     vlc_mutex_unlock( p_sys->p_lock );
 415
 416     if ( p_sys->i_height || p_sys->i_width )
 417     {
 418         p_sys->p_image = image_HandlerCreate( p_stream );
 419     }
 420     else
 421     {
 422         p_sys->p_image = NULL;
 423     }
 424
 425     msg_Dbg( p_stream, "mosaic bridge id=%s pos=%d", p_es->psz_id, i );
 426
 427     /* Create user specified video filters */
 428     psz_chain = var_GetNonEmptyString( p_stream, CFG_PREFIX "vfilter" );
 429     msg_Dbg( p_stream, "psz_chain: %s\n", psz_chain );
 430     if( psz_chain )
 431     {
 432         p_sys->p_vf2 = filter_chain_New( p_stream, "video filter2", false,
 433                                          video_filter_buffer_allocation_init,
 434                                          NULL, p_sys->p_decoder->p_owner );
 435         es_format_t fmt;
 436         es_format_Copy( &fmt, &p_sys->p_decoder->fmt_out );
 437         if( p_sys->i_chroma )
 438             fmt.video.i_chroma = p_sys->i_chroma;
 439         filter_chain_Reset( p_sys->p_vf2, &fmt, &fmt );
 440         filter_chain_AppendFromString( p_sys->p_vf2, psz_chain );
 441         free( psz_chain );
 442     }
 443
 444     return (sout_stream_id_t *)p_sys;
 445 }
 446
 447 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
 448 {
 449     VLC_UNUSED(id);
 450     sout_stream_sys_t *p_sys = p_stream->p_sys;
 451     bridge_t *p_bridge;
 452     bridged_es_t *p_es;
 453     bool b_last_es = true;
 454     int i;
 455
 456     if ( !p_sys->b_inited )
 457     {
 458         return VLC_SUCCESS;
 459     }
 460
 461     if ( p_sys->p_decoder != NULL )
 462     {
 463         decoder_owner_sys_t *p_owner = p_sys->p_decoder->p_owner;
 464
 465         if( p_sys->p_decoder->p_module )
 466             module_Unneed( p_sys->p_decoder, p_sys->p_decoder->p_module );
 467         vlc_object_detach( p_sys->p_decoder );
 468         vlc_object_release( p_sys->p_decoder );
 469
 470         picture_t **pp_ring = p_owner->pp_pics;
 471         for( i = 0; i < PICTURE_RING_SIZE; i++ )
 472         {
 473             if ( pp_ring[i] != NULL )
 474             {
 475                 free( pp_ring[i]->p_data_orig );
 476                 free( pp_ring[i]->p_sys );
 477                 free( pp_ring[i] );
 478             }
 479         }
 480         free( p_owner );
 481     }
 482
 483     /* Destroy user specified video filters */
 484     filter_chain_Delete( p_sys->p_vf2 );
 485
 486     vlc_mutex_lock( p_sys->p_lock );
 487
 488     p_bridge = GetBridge( p_stream );
 489     p_es = p_sys->p_es;
 490
 491     p_es->b_empty = true;
 492     while ( p_es->p_picture )
 493     {
 494         picture_t *p_next = p_es->p_picture->p_next;
 495         p_es->p_picture->pf_release( p_es->p_picture );
 496         p_es->p_picture = p_next;
 497     }
 498
 499     for ( i = 0; i < p_bridge->i_es_num; i++ )
 500     {
 501         if ( !p_bridge->pp_es[i]->b_empty )
 502         {
 503             b_last_es = false;
 504             break;
 505         }
 506     }
 507
 508     if ( b_last_es )
 509     {
 510         vlc_object_t *p_libvlc = VLC_OBJECT( p_stream->p_libvlc );
 511         for ( i = 0; i < p_bridge->i_es_num; i++ )
 512             free( p_bridge->pp_es[i] );
 513         free( p_bridge->pp_es );
 514         free( p_bridge );
 515         var_Destroy( p_libvlc, "mosaic-struct" );
 516     }
 517
 518     vlc_mutex_unlock( p_sys->p_lock );
 519
 520     if ( p_sys->p_image )
 521     {
 522         image_HandlerDelete( p_sys->p_image );
 523     }
 524
 525     p_sys->b_inited = false;
 526
 527     return VLC_SUCCESS;
 528 }
 529
 530 /*****************************************************************************
 531  * PushPicture : push a picture in the mosaic-struct structure
 532  *****************************************************************************/
 533 static void PushPicture( sout_stream_t *p_stream, picture_t *p_picture )
 534 {
 535     sout_stream_sys_t *p_sys = p_stream->p_sys;
 536     bridged_es_t *p_es = p_sys->p_es;
 537
 538     vlc_mutex_lock( p_sys->p_lock );
 539
 540     *p_es->pp_last = p_picture;
 541     p_picture->p_next = NULL;
 542     p_es->pp_last = &p_picture->p_next;
 543
 544     vlc_mutex_unlock( p_sys->p_lock );
 545 }
 546
 547 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
 548                  block_t *p_buffer )
 549 {
 550     sout_stream_sys_t *p_sys = p_stream->p_sys;
 551     picture_t *p_pic;
 552
 553     if ( (sout_stream_sys_t *)id != p_sys )
 554     {
 555         block_ChainRelease( p_buffer );
 556         return VLC_SUCCESS;
 557     }
 558
 559     while ( (p_pic = p_sys->p_decoder->pf_decode_video( p_sys->p_decoder,
 560                                                         &p_buffer )) )
 561     {
 562         picture_t *p_new_pic;
 563
 564         if( p_sys->i_height || p_sys->i_width )
 565         {
 566             video_format_t fmt_out, fmt_in;
 567
 568             memset( &fmt_in, 0, sizeof(video_format_t) );
 569             memset( &fmt_out, 0, sizeof(video_format_t) );
 570             fmt_in = p_sys->p_decoder->fmt_out.video;
 571
 572
 573             if( p_sys->i_chroma )
 574                 fmt_out.i_chroma = p_sys->i_chroma;
 575             else
 576                 fmt_out.i_chroma = VLC_FOURCC('I','4','2','0');
 577
 578             if ( !p_sys->i_height )
 579             {
 580                 fmt_out.i_width = p_sys->i_width;
 581                 fmt_out.i_height = (p_sys->i_width * VOUT_ASPECT_FACTOR
 582                     * p_sys->i_sar_num / p_sys->i_sar_den / fmt_in.i_aspect)
 583                       & ~0x1;
 584             }
 585             else if ( !p_sys->i_width )
 586             {
 587                 fmt_out.i_height = p_sys->i_height;
 588                 fmt_out.i_width = (p_sys->i_height * fmt_in.i_aspect
 589                     * p_sys->i_sar_den / p_sys->i_sar_num / VOUT_ASPECT_FACTOR)
 590                       & ~0x1;
 591             }
 592             else
 593             {
 594                 fmt_out.i_width = p_sys->i_width;
 595                 fmt_out.i_height = p_sys->i_height;
 596             }
 597             fmt_out.i_visible_width = fmt_out.i_width;
 598             fmt_out.i_visible_height = fmt_out.i_height;
 599
 600             p_new_pic = image_Convert( p_sys->p_image,
 601                                        p_pic, &fmt_in, &fmt_out );
 602             if ( p_new_pic == NULL )
 603             {
 604                 msg_Err( p_stream, "image conversion failed" );
 605                 p_pic->pf_release( p_pic );
 606                 continue;
 607             }
 608         }
 609         else
 610         {
 611             /* TODO: chroma conversion if needed */
 612
 613             p_new_pic = (picture_t*)malloc( sizeof(picture_t) );
 614             if( p_new_pic == NULL )
 615             {
 616                 msg_Err( p_stream, "image conversion failed" );
 617                 continue;
 618             }
 619
 620             if( vout_AllocatePicture(
 621                                   p_stream, p_new_pic, p_pic->format.i_chroma,
 622                                   p_pic->format.i_width, p_pic->format.i_height,
 623                                   p_sys->p_decoder->fmt_out.video.i_aspect )
 624                 != VLC_SUCCESS )
 625             {
 626                 p_pic->pf_release( p_pic );
 627                 free( p_new_pic );
 628                 msg_Err( p_stream, "image allocation failed" );
 629                 continue;
 630             }
 631
 632             vout_CopyPicture( p_stream, p_new_pic, p_pic );
 633         }
 634
 635         p_new_pic->i_refcount = 1;
 636         p_new_pic->i_status = DESTROYED_PICTURE;
 637         p_new_pic->i_type   = DIRECT_PICTURE;
 638         p_new_pic->p_sys = (picture_sys_t *)p_new_pic->pf_release;
 639         p_new_pic->pf_release = ReleasePicture;
 640         p_new_pic->date = p_pic->date;
 641         p_pic->pf_release( p_pic );
 642
 643         if( p_sys->p_vf2 )
 644             p_new_pic = filter_chain_VideoFilter( p_sys->p_vf2, p_new_pic );
 645
 646         PushPicture( p_stream, p_new_pic );
 647     }
 648
 649     return VLC_SUCCESS;
 650 }
 651
 652 struct picture_sys_t
 653 {
 654     vlc_object_t *p_owner;
 655     bool b_dead;
 656 };
 657
 658 static void video_release_buffer_decoder( picture_t *p_pic )
 659 {
 660     assert( p_pic && p_pic->p_sys );
 661
 662     if( --p_pic->i_refcount > 0 )
 663         return;
 664
 665     video_del_buffer_decoder( (decoder_t *)p_pic->p_sys->p_owner, p_pic );
 666 }
 667
 668 static void video_release_buffer_filter( picture_t *p_pic )
 669 {
 670     assert( p_pic );
 671
 672     if( --p_pic->i_refcount > 0 )
 673         return;
 674
 675     assert( p_pic->p_sys );
 676
 677     video_del_buffer_filter( (filter_t *)p_pic->p_sys->p_owner, p_pic );
 678 }
 679
 680 inline static picture_t *video_new_buffer_decoder( decoder_t *p_dec )
 681 {
 682     return video_new_buffer( VLC_OBJECT( p_dec ),
 683                              (decoder_owner_sys_t *)p_dec->p_owner,
 684                              &p_dec->fmt_out,
 685                              video_release_buffer_decoder );
 686 }
 687
 688 inline static picture_t *video_new_buffer_filter( filter_t *p_filter )
 689 {
 690     return video_new_buffer( VLC_OBJECT( p_filter ),
 691                              (decoder_owner_sys_t *)p_filter->p_owner,
 692                              &p_filter->fmt_out,
 693                              video_release_buffer_filter );
 694 }
 695
 696 static picture_t *video_new_buffer( vlc_object_t *p_this,
 697                                     decoder_owner_sys_t *p_sys,
 698                                     es_format_t *fmt_out,
 699                                     void ( *pf_release )( picture_t * ) )
 700 {
 701     picture_t **pp_ring = p_sys->pp_pics;
 702     picture_t *p_pic;
 703     int i;
 704
 705     if( fmt_out->video.i_width != p_sys->video.i_width ||
 706         fmt_out->video.i_height != p_sys->video.i_height ||
 707         fmt_out->video.i_chroma != p_sys->video.i_chroma ||
 708         fmt_out->video.i_aspect != p_sys->video.i_aspect )
 709     {
 710         if( !fmt_out->video.i_sar_num ||
 711             !fmt_out->video.i_sar_den )
 712         {
 713             fmt_out->video.i_sar_num =
 714                 fmt_out->video.i_aspect * fmt_out->video.i_height;
 715
 716             fmt_out->video.i_sar_den =
 717                 VOUT_ASPECT_FACTOR * fmt_out->video.i_width;
 718         }
 719
 720         vlc_ureduce( &fmt_out->video.i_sar_num,
 721                      &fmt_out->video.i_sar_den,
 722                      fmt_out->video.i_sar_num,
 723                      fmt_out->video.i_sar_den, 0 );
 724
 725         if( !fmt_out->video.i_visible_width ||
 726             !fmt_out->video.i_visible_height )
 727         {
 728             fmt_out->video.i_visible_width = fmt_out->video.i_width;
 729             fmt_out->video.i_visible_height = fmt_out->video.i_height;
 730         }
 731
 732         fmt_out->video.i_chroma = fmt_out->i_codec;
 733         p_sys->video = fmt_out->video;
 734
 735         for( i = 0; i < PICTURE_RING_SIZE; i++ )
 736         {
 737             if ( pp_ring[i] != NULL )
 738             {
 739                 if ( pp_ring[i]->i_status == DESTROYED_PICTURE )
 740                 {
 741                     free( pp_ring[i]->p_data_orig );
 742                     free( pp_ring[i]->p_sys );
 743                     free( pp_ring[i] );
 744                 }
 745                 else
 746                 {
 747                     pp_ring[i]->p_sys->b_dead = true;
 748                 }
 749                 pp_ring[i] = NULL;
 750             }
 751         }
 752     }
 753
 754     /* Find an empty space in the picture ring buffer */
 755     for( i = 0; i < PICTURE_RING_SIZE; i++ )
 756     {
 757         if( pp_ring[i] != NULL && pp_ring[i]->i_status == DESTROYED_PICTURE )
 758         {
 759             pp_ring[i]->i_status = RESERVED_PICTURE;
 760             pp_ring[i]->i_refcount = 1;
 761             return pp_ring[i];
 762         }
 763     }
 764     for( i = 0; i < PICTURE_RING_SIZE; i++ )
 765     {
 766         if( pp_ring[i] == NULL ) break;
 767     }
 768
 769     if( i == PICTURE_RING_SIZE )
 770     {
 771         msg_Err( p_this, "decoder/filter is leaking pictures, "
 772                  "resetting its ring buffer" );
 773
 774         for( i = 0; i < PICTURE_RING_SIZE; i++ )
 775         {
 776             pp_ring[i]->p_sys->b_dead = true;
 777             pp_ring[i]->pf_release( pp_ring[i] );
 778             pp_ring[i] = NULL;
 779         }
 780
 781         i = 0;
 782     }
 783
 784     p_pic = malloc( sizeof(picture_t) );
 785     if( !p_pic ) return NULL;
 786     fmt_out->video.i_chroma = fmt_out->i_codec;
 787     if( vout_AllocatePicture( p_this, p_pic,
 788                           fmt_out->video.i_chroma,
 789                           fmt_out->video.i_width,
 790                           fmt_out->video.i_height,
 791                           fmt_out->video.i_aspect ) != VLC_SUCCESS )
 792     {
 793         free( p_pic );
 794         return NULL;
 795     }
 796
 797     if( !p_pic->i_planes )
 798     {
 799         free( p_pic );
 800         return NULL;
 801     }
 802
 803     p_pic->pf_release = pf_release;
 804     p_pic->i_refcount = 1;
 805     p_pic->p_sys = malloc( sizeof(picture_sys_t) );
 806     p_pic->p_sys->p_owner = p_this;
 807     p_pic->p_sys->b_dead = false;
 808     p_pic->i_status = RESERVED_PICTURE;
 809
 810     pp_ring[i] = p_pic;
 811
 812     return p_pic;
 813 }
 814
 815 inline static void video_del_buffer_decoder( decoder_t *p_this,
 816                                              picture_t *p_pic )
 817 {
 818     VLC_UNUSED(p_this);
 819     video_del_buffer( p_pic );
 820 }
 821
 822 inline static void video_del_buffer_filter( filter_t *p_this,
 823                                             picture_t *p_pic )
 824 {
 825     VLC_UNUSED(p_this);
 826     video_del_buffer( p_pic );
 827 }
 828
 829 static void video_del_buffer( picture_t *p_pic )
 830 {
 831     p_pic->i_refcount = 0;
 832     p_pic->i_status = DESTROYED_PICTURE;
 833     if ( p_pic->p_sys->b_dead )
 834     {
 835         free( p_pic->p_data_orig );
 836         free( p_pic->p_sys );
 837         free( p_pic );
 838     }
 839 }
 840
 841 static void video_link_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
 842 {
 843     VLC_UNUSED(p_dec);
 844     p_pic->i_refcount++;
 845 }
 846
 847 static void video_unlink_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
 848 {
 849     VLC_UNUSED(p_dec);
 850     video_release_buffer_decoder( p_pic );
 851 }
 852
 853
 854 /**********************************************************************
 855  * Callback to update (some) params on the fly
 856  **********************************************************************/
 857 static int HeightCallback( vlc_object_t *p_this, char const *psz_var,
 858                            vlc_value_t oldval, vlc_value_t newval,
 859                            void *p_data )
 860 {
 861     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 862     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 863     sout_stream_sys_t *p_sys = p_stream->p_sys;
 864
 865     /* We create the handler before updating the value in p_sys
 866      * so we don't have to worry about locking */
 867     if( !p_sys->p_image && newval.i_int )
 868         p_sys->p_image = image_HandlerCreate( p_stream );
 869     p_sys->i_height = newval.i_int;
 870
 871     return VLC_SUCCESS;
 872 }
 873
 874 static int WidthCallback( vlc_object_t *p_this, char const *psz_var,
 875                            vlc_value_t oldval, vlc_value_t newval,
 876                            void *p_data )
 877 {
 878     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 879     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 880     sout_stream_sys_t *p_sys = p_stream->p_sys;
 881
 882     /* We create the handler before updating the value in p_sys
 883      * so we don't have to worry about locking */
 884     if( !p_sys->p_image && newval.i_int )
 885         p_sys->p_image = image_HandlerCreate( p_stream );
 886     p_sys->i_width = newval.i_int;
 887
 888     return VLC_SUCCESS;
 889 }
 890
 891 static int alphaCallback( vlc_object_t *p_this, char const *psz_var,
 892                           vlc_value_t oldval, vlc_value_t newval,
 893                           void *p_data )
 894 {
 895     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 896     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 897     sout_stream_sys_t *p_sys = p_stream->p_sys;
 898
 899     if( p_sys->p_es )
 900         p_sys->p_es->i_alpha = newval.i_int;
 901
 902     return VLC_SUCCESS;
 903 }
 904
 905 static int xCallback( vlc_object_t *p_this, char const *psz_var,
 906                       vlc_value_t oldval, vlc_value_t newval,
 907                       void *p_data )
 908 {
 909     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 910     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 911     sout_stream_sys_t *p_sys = p_stream->p_sys;
 912
 913     if( p_sys->p_es )
 914         p_sys->p_es->i_x = newval.i_int;
 915
 916     return VLC_SUCCESS;
 917 }
 918
 919 static int yCallback( vlc_object_t *p_this, char const *psz_var,
 920                       vlc_value_t oldval, vlc_value_t newval,
 921                       void *p_data )
 922 {
 923     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 924     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 925     sout_stream_sys_t *p_sys = p_stream->p_sys;
 926
 927     if( p_sys->p_es )
 928         p_sys->p_es->i_y = newval.i_int;
 929
 930     return VLC_SUCCESS;
 931 }