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     if( p_pic->p_sys )
  86     {
  87         pf_release_t pf_release = (pf_release_t)p_pic->p_sys;
  88         p_pic->p_sys = NULL;
  89         pf_release( p_pic );
  90     }
  91     else
  92     {
  93         free( p_pic->p_data_orig );
  94         free( p_pic );
  95     }
  96 }
  97
  98 /*****************************************************************************
  99  * Local prototypes
 100  *****************************************************************************/
 101 static int  Open    ( vlc_object_t * );
 102 static void Close   ( vlc_object_t * );
 103 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
 104 static int               Del ( sout_stream_t *, sout_stream_id_t * );
 105 static int               Send( sout_stream_t *, sout_stream_id_t *, block_t * );
 106
 107 inline static void video_del_buffer_decoder( decoder_t *, picture_t * );
 108 inline static void video_del_buffer_filter( filter_t *, picture_t * );
 109 static void video_del_buffer( picture_t * );
 110
 111 inline static picture_t *video_new_buffer_decoder( decoder_t * );
 112 inline static picture_t *video_new_buffer_filter( filter_t * );
 113 static picture_t *video_new_buffer( vlc_object_t *, decoder_owner_sys_t *,
 114                                     es_format_t *, void (*)( picture_t * ) );
 115
 116 static void video_link_picture_decoder( decoder_t *, picture_t * );
 117 static void video_unlink_picture_decoder( decoder_t *, picture_t * );
 118
 119 static int HeightCallback( vlc_object_t *, char const *,
 120                            vlc_value_t, vlc_value_t, void * );
 121 static int WidthCallback( vlc_object_t *, char const *,
 122                           vlc_value_t, vlc_value_t, void * );
 123 static int alphaCallback( vlc_object_t *, char const *,
 124                           vlc_value_t, vlc_value_t, void * );
 125 static int xCallback( vlc_object_t *, char const *,
 126                       vlc_value_t, vlc_value_t, void * );
 127 static int yCallback( vlc_object_t *, char const *,
 128                       vlc_value_t, vlc_value_t, void * );
 129
 130 /*****************************************************************************
 131  * Module descriptor
 132  *****************************************************************************/
 133 #define ID_TEXT N_("ID")
 134 #define ID_LONGTEXT N_( \
 135     "Specify an identifier string for this subpicture" )
 136
 137 #define WIDTH_TEXT N_("Video width")
 138 #define WIDTH_LONGTEXT N_( \
 139     "Output video width." )
 140 #define HEIGHT_TEXT N_("Video height")
 141 #define HEIGHT_LONGTEXT N_( \
 142     "Output video height." )
 143 #define RATIO_TEXT N_("Sample aspect ratio")
 144 #define RATIO_LONGTEXT N_( \
 145     "Sample aspect ratio of the destination (1:1, 3:4, 2:3)." )
 146
 147 #define VFILTER_TEXT N_("Video filter")
 148 #define VFILTER_LONGTEXT N_( \
 149     "Video filters will be applied to the video stream." )
 150
 151 #define CHROMA_TEXT N_("Image chroma")
 152 #define CHROMA_LONGTEXT N_( \
 153     "Force the use of a specific chroma. Use YUVA if you're planning " \
 154     "to use the Alphamask or Bluescreen video filter." )
 155
 156 #define ALPHA_TEXT N_("Transparency")
 157 #define ALPHA_LONGTEXT N_( \
 158     "Transparency of the mosaic picture." )
 159
 160 #define X_TEXT N_("X offset")
 161 #define X_LONGTEXT N_( \
 162     "X coordinate of the upper left corner in the mosaic if non negative." )
 163
 164 #define Y_TEXT N_("Y offset")
 165 #define Y_LONGTEXT N_( \
 166     "Y coordinate of the upper left corner in the mosaic if non negative." )
 167
 168 #define CFG_PREFIX "sout-mosaic-bridge-"
 169
 170 vlc_module_begin();
 171     set_shortname( N_( "Mosaic bridge" ) );
 172     set_description(N_("Mosaic bridge stream output") );
 173     set_capability( "sout stream", 0 );
 174     add_shortcut( "mosaic-bridge" );
 175
 176     add_string( CFG_PREFIX "id", "Id", NULL, ID_TEXT, ID_LONGTEXT,
 177                 false );
 178     add_integer( CFG_PREFIX "width", 0, NULL, WIDTH_TEXT,
 179                  WIDTH_LONGTEXT, true );
 180     add_integer( CFG_PREFIX "height", 0, NULL, HEIGHT_TEXT,
 181                  HEIGHT_LONGTEXT, true );
 182     add_string( CFG_PREFIX "sar", "1:1", NULL, RATIO_TEXT,
 183                 RATIO_LONGTEXT, false );
 184     add_string( CFG_PREFIX "chroma", 0, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
 185                 false );
 186
 187     add_module_list( CFG_PREFIX "vfilter", "video filter2",
 188                      NULL, NULL, VFILTER_TEXT, VFILTER_LONGTEXT, false );
 189
 190     add_integer_with_range( CFG_PREFIX "alpha", 255, 0, 255, NULL,
 191                             ALPHA_TEXT, ALPHA_LONGTEXT, false );
 192     add_integer( CFG_PREFIX "x", -1, NULL, X_TEXT, X_LONGTEXT, false );
 193     add_integer( CFG_PREFIX "y", -1, NULL, Y_TEXT, Y_LONGTEXT, false );
 194
 195     set_callbacks( Open, Close );
 196 vlc_module_end();
 197
 198 static const char *const ppsz_sout_options[] = {
 199     "id", "width", "height", "sar", "vfilter", "chroma", "alpha", "x", "y", NULL
 200 };
 201
 202 /*****************************************************************************
 203  * Open
 204  *****************************************************************************/
 205 static int Open( vlc_object_t *p_this )
 206 {
 207     sout_stream_t        *p_stream = (sout_stream_t *)p_this;
 208     sout_stream_sys_t    *p_sys;
 209     vlc_object_t         *p_libvlc = VLC_OBJECT( p_this->p_libvlc );
 210     vlc_value_t           val;
 211
 212     config_ChainParse( p_stream, CFG_PREFIX, ppsz_sout_options,
 213                        p_stream->p_cfg );
 214
 215     p_sys = malloc( sizeof( sout_stream_sys_t ) );
 216     if( !p_sys )
 217     {
 218         return VLC_ENOMEM;
 219     }
 220
 221     p_stream->p_sys = p_sys;
 222     p_sys->b_inited = false;
 223
 224     var_Create( p_libvlc, "mosaic-lock", VLC_VAR_MUTEX );
 225     var_Get( p_libvlc, "mosaic-lock", &val );
 226     p_sys->p_lock = val.p_address;
 227
 228     var_Get( p_stream, CFG_PREFIX "id", &val );
 229     p_sys->psz_id = val.psz_string;
 230
 231     p_sys->i_height =
 232         var_CreateGetIntegerCommand( p_stream, CFG_PREFIX "height" );
 233     var_AddCallback( p_stream, CFG_PREFIX "height", HeightCallback, p_stream );
 234
 235     p_sys->i_width =
 236         var_CreateGetIntegerCommand( p_stream, CFG_PREFIX "width" );
 237     var_AddCallback( p_stream, CFG_PREFIX "width", WidthCallback, p_stream );
 238
 239     var_Get( p_stream, CFG_PREFIX "sar", &val );
 240     if ( val.psz_string )
 241     {
 242         char *psz_parser = strchr( val.psz_string, ':' );
 243
 244         if( psz_parser )
 245         {
 246             *psz_parser++ = '\0';
 247             p_sys->i_sar_num = atoi( val.psz_string );
 248             p_sys->i_sar_den = atoi( psz_parser );
 249             vlc_ureduce( &p_sys->i_sar_num, &p_sys->i_sar_den,
 250                          p_sys->i_sar_num, p_sys->i_sar_den, 0 );
 251         }
 252         else
 253         {
 254             msg_Warn( p_stream, "bad aspect ratio %s", val.psz_string );
 255             p_sys->i_sar_num = p_sys->i_sar_den = 1;
 256         }
 257
 258         free( val.psz_string );
 259     }
 260     else
 261     {
 262         p_sys->i_sar_num = p_sys->i_sar_den = 1;
 263     }
 264
 265     p_sys->i_chroma = 0;
 266     val.psz_string = var_GetNonEmptyString( p_stream, CFG_PREFIX "chroma" );
 267     if( val.psz_string && strlen( val.psz_string ) >= 4 )
 268     {
 269         memcpy( &p_sys->i_chroma, val.psz_string, 4 );
 270         msg_Dbg( p_stream, "Forcing image chroma to 0x%.8x (%4.4s)", p_sys->i_chroma, (char*)&p_sys->i_chroma );
 271     }
 272
 273 #define INT_COMMAND( a ) \
 274     var_Create( p_stream, CFG_PREFIX #a, \
 275                 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT | VLC_VAR_ISCOMMAND ); \
 276     var_AddCallback( p_stream, CFG_PREFIX #a, a ## Callback, \
 277                      p_stream );
 278     INT_COMMAND( alpha )
 279     INT_COMMAND( x )
 280     INT_COMMAND( y )
 281
 282     p_stream->pf_add    = Add;
 283     p_stream->pf_del    = Del;
 284     p_stream->pf_send   = Send;
 285
 286     p_stream->p_sout->i_out_pace_nocontrol++;
 287
 288     return VLC_SUCCESS;
 289 }
 290
 291 /*****************************************************************************
 292  * Close
 293  *****************************************************************************/
 294 static void Close( vlc_object_t * p_this )
 295 {
 296     sout_stream_t     *p_stream = (sout_stream_t*)p_this;
 297     sout_stream_sys_t *p_sys = p_stream->p_sys;
 298
 299     p_stream->p_sout->i_out_pace_nocontrol--;
 300
 301     free( p_sys->psz_id );
 302
 303     free( p_sys );
 304 }
 305
 306 static int video_filter_buffer_allocation_init( filter_t *p_filter, void *p_data )
 307 {
 308     p_filter->pf_vout_buffer_new = video_new_buffer_filter;
 309     p_filter->pf_vout_buffer_del = video_del_buffer_filter;
 310     p_filter->p_owner = p_data;
 311     return VLC_SUCCESS;
 312 }
 313
 314 static sout_stream_id_t * Add( sout_stream_t *p_stream, es_format_t *p_fmt )
 315 {
 316     sout_stream_sys_t *p_sys = p_stream->p_sys;
 317     bridge_t *p_bridge;
 318     bridged_es_t *p_es;
 319     char *psz_chain;
 320     int i;
 321
 322     if ( p_sys->b_inited )
 323     {
 324         return NULL;
 325     }
 326
 327     /* Create decoder object */
 328     p_sys->p_decoder = vlc_object_create( p_stream, VLC_OBJECT_DECODER );
 329     if( !p_sys->p_decoder )
 330         return NULL;
 331     vlc_object_attach( p_sys->p_decoder, p_stream );
 332     p_sys->p_decoder->p_module = NULL;
 333     p_sys->p_decoder->fmt_in = *p_fmt;
 334     p_sys->p_decoder->b_pace_control = false;
 335     p_sys->p_decoder->fmt_out = p_sys->p_decoder->fmt_in;
 336     p_sys->p_decoder->fmt_out.i_extra = 0;
 337     p_sys->p_decoder->fmt_out.p_extra = 0;
 338     p_sys->p_decoder->pf_decode_video = 0;
 339     p_sys->p_decoder->pf_vout_buffer_new = video_new_buffer_decoder;
 340     p_sys->p_decoder->pf_vout_buffer_del = video_del_buffer_decoder;
 341     p_sys->p_decoder->pf_picture_link    = video_link_picture_decoder;
 342     p_sys->p_decoder->pf_picture_unlink  = video_unlink_picture_decoder;
 343     p_sys->p_decoder->p_owner = malloc( sizeof(decoder_owner_sys_t) );
 344     if( !p_sys->p_decoder->p_owner )
 345     {
 346         vlc_object_detach( p_sys->p_decoder );
 347         vlc_object_release( p_sys->p_decoder );
 348         return NULL;
 349     }
 350
 351     for( i = 0; i < PICTURE_RING_SIZE; i++ )
 352         p_sys->p_decoder->p_owner->pp_pics[i] = NULL;
 353     p_sys->p_decoder->p_owner->video = p_fmt->video;
 354     //p_sys->p_decoder->p_cfg = p_sys->p_video_cfg;
 355
 356     p_sys->p_decoder->p_module =
 357         module_Need( p_sys->p_decoder, "decoder", "$codec", 0 );
 358
 359     if( !p_sys->p_decoder->p_module )
 360     {
 361         msg_Err( p_stream, "cannot find decoder" );
 362         vlc_object_detach( p_sys->p_decoder );
 363         vlc_object_release( p_sys->p_decoder );
 364         return NULL;
 365     }
 366
 367     p_sys->b_inited = true;
 368     vlc_mutex_lock( p_sys->p_lock );
 369
 370     p_bridge = GetBridge( p_stream );
 371     if ( p_bridge == NULL )
 372     {
 373         vlc_object_t *p_libvlc = VLC_OBJECT( p_stream->p_libvlc );
 374         vlc_value_t val;
 375
 376         p_bridge = malloc( sizeof( bridge_t ) );
 377
 378         var_Create( p_libvlc, "mosaic-struct", VLC_VAR_ADDRESS );
 379         val.p_address = p_bridge;
 380         var_Set( p_libvlc, "mosaic-struct", val );
 381
 382         p_bridge->i_es_num = 0;
 383         p_bridge->pp_es = NULL;
 384     }
 385
 386     for ( i = 0; i < p_bridge->i_es_num; i++ )
 387     {
 388         if ( p_bridge->pp_es[i]->b_empty )
 389             break;
 390     }
 391
 392     if ( i == p_bridge->i_es_num )
 393     {
 394         p_bridge->pp_es = realloc( p_bridge->pp_es,
 395                                    (p_bridge->i_es_num + 1)
 396                                      * sizeof(bridged_es_t *) );
 397         p_bridge->i_es_num++;
 398         p_bridge->pp_es[i] = malloc( sizeof(bridged_es_t) );
 399     }
 400
 401     p_sys->p_es = p_es = p_bridge->pp_es[i];
 402
 403     p_es->i_alpha = var_GetInteger( p_stream, CFG_PREFIX "alpha" );
 404     p_es->i_x = var_GetInteger( p_stream, CFG_PREFIX "x" );
 405     p_es->i_y = var_GetInteger( p_stream, CFG_PREFIX "y" );
 406
 407     //p_es->fmt = *p_fmt;
 408     p_es->psz_id = p_sys->psz_id;
 409     p_es->p_picture = NULL;
 410     p_es->pp_last = &p_es->p_picture;
 411     p_es->b_empty = false;
 412
 413     vlc_mutex_unlock( p_sys->p_lock );
 414
 415     if ( p_sys->i_height || p_sys->i_width )
 416     {
 417         p_sys->p_image = image_HandlerCreate( p_stream );
 418     }
 419     else
 420     {
 421         p_sys->p_image = NULL;
 422     }
 423
 424     msg_Dbg( p_stream, "mosaic bridge id=%s pos=%d", p_es->psz_id, i );
 425
 426     /* Create user specified video filters */
 427     psz_chain = var_GetNonEmptyString( p_stream, CFG_PREFIX "vfilter" );
 428     msg_Dbg( p_stream, "psz_chain: %s\n", psz_chain );
 429     if( psz_chain )
 430     {
 431         p_sys->p_vf2 = filter_chain_New( p_stream, "video filter2", false,
 432                                          video_filter_buffer_allocation_init,
 433                                          NULL, p_sys->p_decoder->p_owner );
 434         es_format_t fmt;
 435         es_format_Copy( &fmt, &p_sys->p_decoder->fmt_out );
 436         if( p_sys->i_chroma )
 437             fmt.video.i_chroma = p_sys->i_chroma;
 438         filter_chain_Reset( p_sys->p_vf2, &fmt, &fmt );
 439         filter_chain_AppendFromString( p_sys->p_vf2, psz_chain );
 440         free( psz_chain );
 441     }
 442     else
 443     {
 444         p_sys->p_vf2 = NULL;
 445     }
 446
 447     return (sout_stream_id_t *)p_sys;
 448 }
 449
 450 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
 451 {
 452     VLC_UNUSED(id);
 453     sout_stream_sys_t *p_sys = p_stream->p_sys;
 454     bridge_t *p_bridge;
 455     bridged_es_t *p_es;
 456     bool b_last_es = true;
 457     int i;
 458
 459     if ( !p_sys->b_inited )
 460     {
 461         return VLC_SUCCESS;
 462     }
 463
 464     if ( p_sys->p_decoder != NULL )
 465     {
 466         decoder_owner_sys_t *p_owner = p_sys->p_decoder->p_owner;
 467
 468         if( p_sys->p_decoder->p_module )
 469             module_Unneed( p_sys->p_decoder, p_sys->p_decoder->p_module );
 470         vlc_object_detach( p_sys->p_decoder );
 471         vlc_object_release( p_sys->p_decoder );
 472
 473         picture_t **pp_ring = p_owner->pp_pics;
 474         for( i = 0; i < PICTURE_RING_SIZE; i++ )
 475         {
 476             if ( pp_ring[i] != NULL )
 477             {
 478                 free( pp_ring[i]->p_data_orig );
 479                 free( pp_ring[i]->p_sys );
 480                 free( pp_ring[i] );
 481             }
 482         }
 483         free( p_owner );
 484     }
 485
 486     /* Destroy user specified video filters */
 487     filter_chain_Delete( p_sys->p_vf2 );
 488
 489     vlc_mutex_lock( p_sys->p_lock );
 490
 491     p_bridge = GetBridge( p_stream );
 492     p_es = p_sys->p_es;
 493
 494     p_es->b_empty = true;
 495     while ( p_es->p_picture )
 496     {
 497         picture_t *p_next = p_es->p_picture->p_next;
 498         p_es->p_picture->pf_release( p_es->p_picture );
 499         p_es->p_picture = p_next;
 500     }
 501
 502     for ( i = 0; i < p_bridge->i_es_num; i++ )
 503     {
 504         if ( !p_bridge->pp_es[i]->b_empty )
 505         {
 506             b_last_es = false;
 507             break;
 508         }
 509     }
 510
 511     if ( b_last_es )
 512     {
 513         vlc_object_t *p_libvlc = VLC_OBJECT( p_stream->p_libvlc );
 514         for ( i = 0; i < p_bridge->i_es_num; i++ )
 515             free( p_bridge->pp_es[i] );
 516         free( p_bridge->pp_es );
 517         free( p_bridge );
 518         var_Destroy( p_libvlc, "mosaic-struct" );
 519     }
 520
 521     vlc_mutex_unlock( p_sys->p_lock );
 522
 523     if ( p_sys->p_image )
 524     {
 525         image_HandlerDelete( p_sys->p_image );
 526     }
 527
 528     p_sys->b_inited = false;
 529
 530     return VLC_SUCCESS;
 531 }
 532
 533 /*****************************************************************************
 534  * PushPicture : push a picture in the mosaic-struct structure
 535  *****************************************************************************/
 536 static void PushPicture( sout_stream_t *p_stream, picture_t *p_picture )
 537 {
 538     sout_stream_sys_t *p_sys = p_stream->p_sys;
 539     bridged_es_t *p_es = p_sys->p_es;
 540
 541     vlc_mutex_lock( p_sys->p_lock );
 542
 543     *p_es->pp_last = p_picture;
 544     p_picture->p_next = NULL;
 545     p_es->pp_last = &p_picture->p_next;
 546
 547     vlc_mutex_unlock( p_sys->p_lock );
 548 }
 549
 550 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
 551                  block_t *p_buffer )
 552 {
 553     sout_stream_sys_t *p_sys = p_stream->p_sys;
 554     picture_t *p_pic;
 555
 556     if ( (sout_stream_sys_t *)id != p_sys )
 557     {
 558         block_ChainRelease( p_buffer );
 559         return VLC_SUCCESS;
 560     }
 561
 562     while ( (p_pic = p_sys->p_decoder->pf_decode_video( p_sys->p_decoder,
 563                                                         &p_buffer )) )
 564     {
 565         picture_t *p_new_pic;
 566
 567         if( p_sys->i_height || p_sys->i_width )
 568         {
 569             video_format_t fmt_out, fmt_in;
 570
 571             memset( &fmt_in, 0, sizeof(video_format_t) );
 572             memset( &fmt_out, 0, sizeof(video_format_t) );
 573             fmt_in = p_sys->p_decoder->fmt_out.video;
 574
 575
 576             if( p_sys->i_chroma )
 577                 fmt_out.i_chroma = p_sys->i_chroma;
 578             else
 579                 fmt_out.i_chroma = VLC_FOURCC('I','4','2','0');
 580
 581             if ( !p_sys->i_height )
 582             {
 583                 fmt_out.i_width = p_sys->i_width;
 584                 fmt_out.i_height = (p_sys->i_width * VOUT_ASPECT_FACTOR
 585                     * p_sys->i_sar_num / p_sys->i_sar_den / fmt_in.i_aspect)
 586                       & ~0x1;
 587             }
 588             else if ( !p_sys->i_width )
 589             {
 590                 fmt_out.i_height = p_sys->i_height;
 591                 fmt_out.i_width = (p_sys->i_height * fmt_in.i_aspect
 592                     * p_sys->i_sar_den / p_sys->i_sar_num / VOUT_ASPECT_FACTOR)
 593                       & ~0x1;
 594             }
 595             else
 596             {
 597                 fmt_out.i_width = p_sys->i_width;
 598                 fmt_out.i_height = p_sys->i_height;
 599             }
 600             fmt_out.i_visible_width = fmt_out.i_width;
 601             fmt_out.i_visible_height = fmt_out.i_height;
 602
 603             p_new_pic = image_Convert( p_sys->p_image,
 604                                        p_pic, &fmt_in, &fmt_out );
 605             if ( p_new_pic == NULL )
 606             {
 607                 msg_Err( p_stream, "image conversion failed" );
 608                 p_pic->pf_release( p_pic );
 609                 continue;
 610             }
 611         }
 612         else
 613         {
 614             /* TODO: chroma conversion if needed */
 615
 616             p_new_pic = (picture_t*)malloc( sizeof(picture_t) );
 617             if( p_new_pic == NULL )
 618             {
 619                 msg_Err( p_stream, "image conversion failed" );
 620                 continue;
 621             }
 622
 623             if( vout_AllocatePicture(
 624                                   p_stream, p_new_pic, p_pic->format.i_chroma,
 625                                   p_pic->format.i_width, p_pic->format.i_height,
 626                                   p_sys->p_decoder->fmt_out.video.i_aspect )
 627                 != VLC_SUCCESS )
 628             {
 629                 p_pic->pf_release( p_pic );
 630                 free( p_new_pic );
 631                 msg_Err( p_stream, "image allocation failed" );
 632                 continue;
 633             }
 634
 635             vout_CopyPicture( p_stream, p_new_pic, p_pic );
 636         }
 637
 638         p_new_pic->i_refcount = 1;
 639         p_new_pic->i_status = DESTROYED_PICTURE;
 640         p_new_pic->i_type   = DIRECT_PICTURE;
 641         p_new_pic->p_sys = (picture_sys_t *)p_new_pic->pf_release;
 642         p_new_pic->pf_release = ReleasePicture;
 643         p_new_pic->date = p_pic->date;
 644         p_pic->pf_release( p_pic );
 645
 646         if( p_sys->p_vf2 )
 647             p_new_pic = filter_chain_VideoFilter( p_sys->p_vf2, p_new_pic );
 648
 649         PushPicture( p_stream, p_new_pic );
 650     }
 651
 652     return VLC_SUCCESS;
 653 }
 654
 655 struct picture_sys_t
 656 {
 657     vlc_object_t *p_owner;
 658     bool b_dead;
 659 };
 660
 661 static void video_release_buffer_decoder( picture_t *p_pic )
 662 {
 663     assert( p_pic && p_pic->p_sys );
 664
 665     if( --p_pic->i_refcount > 0 )
 666         return;
 667
 668     video_del_buffer_decoder( (decoder_t *)p_pic->p_sys->p_owner, p_pic );
 669 }
 670
 671 static void video_release_buffer_filter( picture_t *p_pic )
 672 {
 673     assert( p_pic );
 674
 675     if( --p_pic->i_refcount > 0 )
 676         return;
 677
 678     assert( p_pic->p_sys );
 679
 680     video_del_buffer_filter( (filter_t *)p_pic->p_sys->p_owner, p_pic );
 681 }
 682
 683 inline static picture_t *video_new_buffer_decoder( decoder_t *p_dec )
 684 {
 685     return video_new_buffer( VLC_OBJECT( p_dec ),
 686                              (decoder_owner_sys_t *)p_dec->p_owner,
 687                              &p_dec->fmt_out,
 688                              video_release_buffer_decoder );
 689 }
 690
 691 inline static picture_t *video_new_buffer_filter( filter_t *p_filter )
 692 {
 693     return video_new_buffer( VLC_OBJECT( p_filter ),
 694                              (decoder_owner_sys_t *)p_filter->p_owner,
 695                              &p_filter->fmt_out,
 696                              video_release_buffer_filter );
 697 }
 698
 699 static picture_t *video_new_buffer( vlc_object_t *p_this,
 700                                     decoder_owner_sys_t *p_sys,
 701                                     es_format_t *fmt_out,
 702                                     void ( *pf_release )( picture_t * ) )
 703 {
 704     picture_t **pp_ring = p_sys->pp_pics;
 705     picture_t *p_pic;
 706     int i;
 707
 708     if( fmt_out->video.i_width != p_sys->video.i_width ||
 709         fmt_out->video.i_height != p_sys->video.i_height ||
 710         fmt_out->video.i_chroma != p_sys->video.i_chroma ||
 711         fmt_out->video.i_aspect != p_sys->video.i_aspect )
 712     {
 713         if( !fmt_out->video.i_sar_num ||
 714             !fmt_out->video.i_sar_den )
 715         {
 716             fmt_out->video.i_sar_num =
 717                 fmt_out->video.i_aspect * fmt_out->video.i_height;
 718
 719             fmt_out->video.i_sar_den =
 720                 VOUT_ASPECT_FACTOR * fmt_out->video.i_width;
 721         }
 722
 723         vlc_ureduce( &fmt_out->video.i_sar_num,
 724                      &fmt_out->video.i_sar_den,
 725                      fmt_out->video.i_sar_num,
 726                      fmt_out->video.i_sar_den, 0 );
 727
 728         if( !fmt_out->video.i_visible_width ||
 729             !fmt_out->video.i_visible_height )
 730         {
 731             fmt_out->video.i_visible_width = fmt_out->video.i_width;
 732             fmt_out->video.i_visible_height = fmt_out->video.i_height;
 733         }
 734
 735         fmt_out->video.i_chroma = fmt_out->i_codec;
 736         p_sys->video = fmt_out->video;
 737
 738         for( i = 0; i < PICTURE_RING_SIZE; i++ )
 739         {
 740             if ( pp_ring[i] != NULL )
 741             {
 742                 if ( pp_ring[i]->i_status == DESTROYED_PICTURE )
 743                 {
 744                     free( pp_ring[i]->p_data_orig );
 745                     free( pp_ring[i]->p_sys );
 746                     free( pp_ring[i] );
 747                 }
 748                 else
 749                 {
 750                     pp_ring[i]->p_sys->b_dead = true;
 751                 }
 752                 pp_ring[i] = NULL;
 753             }
 754         }
 755     }
 756
 757     /* Find an empty space in the picture ring buffer */
 758     for( i = 0; i < PICTURE_RING_SIZE; i++ )
 759     {
 760         if( pp_ring[i] != NULL && pp_ring[i]->i_status == DESTROYED_PICTURE )
 761         {
 762             pp_ring[i]->i_status = RESERVED_PICTURE;
 763             pp_ring[i]->i_refcount = 1;
 764             return pp_ring[i];
 765         }
 766     }
 767     for( i = 0; i < PICTURE_RING_SIZE; i++ )
 768     {
 769         if( pp_ring[i] == NULL ) break;
 770     }
 771
 772     if( i == PICTURE_RING_SIZE )
 773     {
 774         msg_Err( p_this, "decoder/filter is leaking pictures, "
 775                  "resetting its ring buffer" );
 776
 777         for( i = 0; i < PICTURE_RING_SIZE; i++ )
 778         {
 779             pp_ring[i]->p_sys->b_dead = true;
 780             pp_ring[i]->pf_release( pp_ring[i] );
 781             pp_ring[i] = NULL;
 782         }
 783
 784         i = 0;
 785     }
 786
 787     p_pic = malloc( sizeof(picture_t) );
 788     if( !p_pic ) return NULL;
 789     fmt_out->video.i_chroma = fmt_out->i_codec;
 790     if( vout_AllocatePicture( p_this, p_pic,
 791                           fmt_out->video.i_chroma,
 792                           fmt_out->video.i_width,
 793                           fmt_out->video.i_height,
 794                           fmt_out->video.i_aspect ) != VLC_SUCCESS )
 795     {
 796         free( p_pic );
 797         return NULL;
 798     }
 799
 800     if( !p_pic->i_planes )
 801     {
 802         free( p_pic );
 803         return NULL;
 804     }
 805
 806     p_pic->pf_release = pf_release;
 807     p_pic->i_refcount = 1;
 808     p_pic->p_sys = malloc( sizeof(picture_sys_t) );
 809     p_pic->p_sys->p_owner = p_this;
 810     p_pic->p_sys->b_dead = false;
 811     p_pic->i_status = RESERVED_PICTURE;
 812
 813     pp_ring[i] = p_pic;
 814
 815     return p_pic;
 816 }
 817
 818 inline static void video_del_buffer_decoder( decoder_t *p_this,
 819                                              picture_t *p_pic )
 820 {
 821     VLC_UNUSED(p_this);
 822     video_del_buffer( p_pic );
 823 }
 824
 825 inline static void video_del_buffer_filter( filter_t *p_this,
 826                                             picture_t *p_pic )
 827 {
 828     VLC_UNUSED(p_this);
 829     video_del_buffer( p_pic );
 830 }
 831
 832 static void video_del_buffer( picture_t *p_pic )
 833 {
 834     p_pic->i_refcount = 0;
 835     p_pic->i_status = DESTROYED_PICTURE;
 836     if ( p_pic->p_sys->b_dead )
 837     {
 838         free( p_pic->p_data_orig );
 839         free( p_pic->p_sys );
 840         free( p_pic );
 841     }
 842 }
 843
 844 static void video_link_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
 845 {
 846     VLC_UNUSED(p_dec);
 847     p_pic->i_refcount++;
 848 }
 849
 850 static void video_unlink_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
 851 {
 852     VLC_UNUSED(p_dec);
 853     video_release_buffer_decoder( p_pic );
 854 }
 855
 856
 857 /**********************************************************************
 858  * Callback to update (some) params on the fly
 859  **********************************************************************/
 860 static int HeightCallback( vlc_object_t *p_this, char const *psz_var,
 861                            vlc_value_t oldval, vlc_value_t newval,
 862                            void *p_data )
 863 {
 864     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 865     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 866     sout_stream_sys_t *p_sys = p_stream->p_sys;
 867
 868     /* We create the handler before updating the value in p_sys
 869      * so we don't have to worry about locking */
 870     if( !p_sys->p_image && newval.i_int )
 871         p_sys->p_image = image_HandlerCreate( p_stream );
 872     p_sys->i_height = newval.i_int;
 873
 874     return VLC_SUCCESS;
 875 }
 876
 877 static int WidthCallback( vlc_object_t *p_this, char const *psz_var,
 878                            vlc_value_t oldval, vlc_value_t newval,
 879                            void *p_data )
 880 {
 881     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 882     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 883     sout_stream_sys_t *p_sys = p_stream->p_sys;
 884
 885     /* We create the handler before updating the value in p_sys
 886      * so we don't have to worry about locking */
 887     if( !p_sys->p_image && newval.i_int )
 888         p_sys->p_image = image_HandlerCreate( p_stream );
 889     p_sys->i_width = newval.i_int;
 890
 891     return VLC_SUCCESS;
 892 }
 893
 894 static int alphaCallback( vlc_object_t *p_this, char const *psz_var,
 895                           vlc_value_t oldval, vlc_value_t newval,
 896                           void *p_data )
 897 {
 898     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 899     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 900     sout_stream_sys_t *p_sys = p_stream->p_sys;
 901
 902     if( p_sys->p_es )
 903         p_sys->p_es->i_alpha = newval.i_int;
 904
 905     return VLC_SUCCESS;
 906 }
 907
 908 static int xCallback( vlc_object_t *p_this, char const *psz_var,
 909                       vlc_value_t oldval, vlc_value_t newval,
 910                       void *p_data )
 911 {
 912     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 913     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 914     sout_stream_sys_t *p_sys = p_stream->p_sys;
 915
 916     if( p_sys->p_es )
 917         p_sys->p_es->i_x = newval.i_int;
 918
 919     return VLC_SUCCESS;
 920 }
 921
 922 static int yCallback( vlc_object_t *p_this, char const *psz_var,
 923                       vlc_value_t oldval, vlc_value_t newval,
 924                       void *p_data )
 925 {
 926     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 927     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 928     sout_stream_sys_t *p_sys = p_stream->p_sys;
 929
 930     if( p_sys->p_es )
 931         p_sys->p_es->i_y = newval.i_int;
 932
 933     return VLC_SUCCESS;
 934 }