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
  30 #ifdef HAVE_CONFIG_H
  31 # include "config.h"
  32 #endif
  33
  34 #include <vlc_common.h>
  35 #include <vlc_plugin.h>
  36 #include <vlc_sout.h>
  37 #include <vlc_block.h>
  38 #include <vlc_codec.h>
  39
  40 #include <vlc_image.h>
  41 #include <vlc_filter.h>
  42
  43 #include "../video_filter/mosaic.h"
  44
  45 #include <assert.h>
  46
  47 /*****************************************************************************
  48  * Local structures
  49  *****************************************************************************/
  50 struct sout_stream_sys_t
  51 {
  52     bridged_es_t *p_es;
  53     vlc_mutex_t *p_lock;
  54
  55     decoder_t       *p_decoder;
  56     image_handler_t *p_image; /* filter for resizing */
  57     int i_height, i_width;
  58     unsigned int i_sar_num, i_sar_den;
  59     char *psz_id;
  60     bool b_inited;
  61
  62     int i_chroma; /* force image format chroma */
  63
  64     filter_chain_t *p_vf2;
  65 };
  66
  67 #define PICTURE_RING_SIZE 4
  68 struct decoder_owner_sys_t
  69 {
  70     picture_t *pp_pics[PICTURE_RING_SIZE];
  71
  72     /* Current format in use by the output */
  73     video_format_t video;
  74 };
  75
  76 typedef void (* pf_release_t)( picture_t * );
  77 static void ReleasePicture( picture_t *p_pic )
  78 {
  79     assert( p_pic );
  80
  81     if( --p_pic->i_refcount > 0 )
  82         return;
  83
  84     assert( p_pic->p_sys );
  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
 443     return (sout_stream_id_t *)p_sys;
 444 }
 445
 446 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
 447 {
 448     VLC_UNUSED(id);
 449     sout_stream_sys_t *p_sys = p_stream->p_sys;
 450     bridge_t *p_bridge;
 451     bridged_es_t *p_es;
 452     bool b_last_es = true;
 453     int i;
 454
 455     if ( !p_sys->b_inited )
 456     {
 457         return VLC_SUCCESS;
 458     }
 459
 460     if ( p_sys->p_decoder != NULL )
 461     {
 462         decoder_owner_sys_t *p_owner = p_sys->p_decoder->p_owner;
 463
 464         if( p_sys->p_decoder->p_module )
 465             module_Unneed( p_sys->p_decoder, p_sys->p_decoder->p_module );
 466         vlc_object_detach( p_sys->p_decoder );
 467         vlc_object_release( p_sys->p_decoder );
 468
 469         picture_t **pp_ring = p_owner->pp_pics;
 470         for( i = 0; i < PICTURE_RING_SIZE; i++ )
 471         {
 472             if ( pp_ring[i] != NULL )
 473             {
 474                 free( pp_ring[i]->p_data_orig );
 475                 free( pp_ring[i]->p_sys );
 476                 free( pp_ring[i] );
 477             }
 478         }
 479         free( p_owner );
 480     }
 481
 482     /* Destroy user specified video filters */
 483     filter_chain_Delete( p_sys->p_vf2 );
 484
 485     vlc_mutex_lock( p_sys->p_lock );
 486
 487     p_bridge = GetBridge( p_stream );
 488     p_es = p_sys->p_es;
 489
 490     p_es->b_empty = true;
 491     while ( p_es->p_picture )
 492     {
 493         picture_t *p_next = p_es->p_picture->p_next;
 494         p_es->p_picture->pf_release( p_es->p_picture );
 495         p_es->p_picture = p_next;
 496     }
 497
 498     for ( i = 0; i < p_bridge->i_es_num; i++ )
 499     {
 500         if ( !p_bridge->pp_es[i]->b_empty )
 501         {
 502             b_last_es = false;
 503             break;
 504         }
 505     }
 506
 507     if ( b_last_es )
 508     {
 509         vlc_object_t *p_libvlc = VLC_OBJECT( p_stream->p_libvlc );
 510         for ( i = 0; i < p_bridge->i_es_num; i++ )
 511             free( p_bridge->pp_es[i] );
 512         free( p_bridge->pp_es );
 513         free( p_bridge );
 514         var_Destroy( p_libvlc, "mosaic-struct" );
 515     }
 516
 517     vlc_mutex_unlock( p_sys->p_lock );
 518
 519     if ( p_sys->p_image )
 520     {
 521         image_HandlerDelete( p_sys->p_image );
 522     }
 523
 524     p_sys->b_inited = false;
 525
 526     return VLC_SUCCESS;
 527 }
 528
 529 /*****************************************************************************
 530  * PushPicture : push a picture in the mosaic-struct structure
 531  *****************************************************************************/
 532 static void PushPicture( sout_stream_t *p_stream, picture_t *p_picture )
 533 {
 534     sout_stream_sys_t *p_sys = p_stream->p_sys;
 535     bridged_es_t *p_es = p_sys->p_es;
 536
 537     vlc_mutex_lock( p_sys->p_lock );
 538
 539     *p_es->pp_last = p_picture;
 540     p_picture->p_next = NULL;
 541     p_es->pp_last = &p_picture->p_next;
 542
 543     vlc_mutex_unlock( p_sys->p_lock );
 544 }
 545
 546 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
 547                  block_t *p_buffer )
 548 {
 549     sout_stream_sys_t *p_sys = p_stream->p_sys;
 550     picture_t *p_pic;
 551
 552     if ( (sout_stream_sys_t *)id != p_sys )
 553     {
 554         block_ChainRelease( p_buffer );
 555         return VLC_SUCCESS;
 556     }
 557
 558     while ( (p_pic = p_sys->p_decoder->pf_decode_video( p_sys->p_decoder,
 559                                                         &p_buffer )) )
 560     {
 561         picture_t *p_new_pic;
 562
 563         if( p_sys->i_height || p_sys->i_width )
 564         {
 565             video_format_t fmt_out, fmt_in;
 566
 567             memset( &fmt_in, 0, sizeof(video_format_t) );
 568             memset( &fmt_out, 0, sizeof(video_format_t) );
 569             fmt_in = p_sys->p_decoder->fmt_out.video;
 570
 571
 572             if( p_sys->i_chroma )
 573                 fmt_out.i_chroma = p_sys->i_chroma;
 574             else
 575                 fmt_out.i_chroma = VLC_FOURCC('I','4','2','0');
 576
 577             if ( !p_sys->i_height )
 578             {
 579                 fmt_out.i_width = p_sys->i_width;
 580                 fmt_out.i_height = (p_sys->i_width * VOUT_ASPECT_FACTOR
 581                     * p_sys->i_sar_num / p_sys->i_sar_den / fmt_in.i_aspect)
 582                       & ~0x1;
 583             }
 584             else if ( !p_sys->i_width )
 585             {
 586                 fmt_out.i_height = p_sys->i_height;
 587                 fmt_out.i_width = (p_sys->i_height * fmt_in.i_aspect
 588                     * p_sys->i_sar_den / p_sys->i_sar_num / VOUT_ASPECT_FACTOR)
 589                       & ~0x1;
 590             }
 591             else
 592             {
 593                 fmt_out.i_width = p_sys->i_width;
 594                 fmt_out.i_height = p_sys->i_height;
 595             }
 596             fmt_out.i_visible_width = fmt_out.i_width;
 597             fmt_out.i_visible_height = fmt_out.i_height;
 598
 599             p_new_pic = image_Convert( p_sys->p_image,
 600                                        p_pic, &fmt_in, &fmt_out );
 601             if ( p_new_pic == NULL )
 602             {
 603                 msg_Err( p_stream, "image conversion failed" );
 604                 p_pic->pf_release( p_pic );
 605                 continue;
 606             }
 607         }
 608         else
 609         {
 610             /* TODO: chroma conversion if needed */
 611
 612             p_new_pic = (picture_t*)malloc( sizeof(picture_t) );
 613             if( p_new_pic == NULL )
 614             {
 615                 msg_Err( p_stream, "image conversion failed" );
 616                 continue;
 617             }
 618
 619             if( vout_AllocatePicture(
 620                                   p_stream, p_new_pic, p_pic->format.i_chroma,
 621                                   p_pic->format.i_width, p_pic->format.i_height,
 622                                   p_sys->p_decoder->fmt_out.video.i_aspect )
 623                 != VLC_SUCCESS )
 624             {
 625                 p_pic->pf_release( p_pic );
 626                 free( p_new_pic );
 627                 msg_Err( p_stream, "image allocation failed" );
 628                 continue;
 629             }
 630
 631             vout_CopyPicture( p_stream, p_new_pic, p_pic );
 632         }
 633
 634         p_new_pic->i_refcount = 1;
 635         p_new_pic->i_status = DESTROYED_PICTURE;
 636         p_new_pic->i_type   = DIRECT_PICTURE;
 637         p_new_pic->p_sys = (picture_sys_t *)p_new_pic->pf_release;
 638         p_new_pic->pf_release = ReleasePicture;
 639         p_new_pic->date = p_pic->date;
 640         p_pic->pf_release( p_pic );
 641
 642         if( p_sys->p_vf2 )
 643             p_new_pic = filter_chain_VideoFilter( p_sys->p_vf2, p_new_pic );
 644
 645         PushPicture( p_stream, p_new_pic );
 646     }
 647
 648     return VLC_SUCCESS;
 649 }
 650
 651 struct picture_sys_t
 652 {
 653     vlc_object_t *p_owner;
 654     bool b_dead;
 655 };
 656
 657 static void video_release_buffer_decoder( picture_t *p_pic )
 658 {
 659     assert( p_pic && p_pic->p_sys );
 660
 661     if( --p_pic->i_refcount > 0 )
 662         return;
 663
 664     video_del_buffer_decoder( (decoder_t *)p_pic->p_sys->p_owner, p_pic );
 665 }
 666
 667 static void video_release_buffer_filter( picture_t *p_pic )
 668 {
 669     assert( p_pic );
 670
 671     if( --p_pic->i_refcount > 0 )
 672         return;
 673
 674     assert( p_pic->p_sys );
 675
 676     video_del_buffer_filter( (filter_t *)p_pic->p_sys->p_owner, p_pic );
 677 }
 678
 679 inline static picture_t *video_new_buffer_decoder( decoder_t *p_dec )
 680 {
 681     return video_new_buffer( VLC_OBJECT( p_dec ),
 682                              (decoder_owner_sys_t *)p_dec->p_owner,
 683                              &p_dec->fmt_out,
 684                              video_release_buffer_decoder );
 685 }
 686
 687 inline static picture_t *video_new_buffer_filter( filter_t *p_filter )
 688 {
 689     return video_new_buffer( VLC_OBJECT( p_filter ),
 690                              (decoder_owner_sys_t *)p_filter->p_owner,
 691                              &p_filter->fmt_out,
 692                              video_release_buffer_filter );
 693 }
 694
 695 static picture_t *video_new_buffer( vlc_object_t *p_this,
 696                                     decoder_owner_sys_t *p_sys,
 697                                     es_format_t *fmt_out,
 698                                     void ( *pf_release )( picture_t * ) )
 699 {
 700     picture_t **pp_ring = p_sys->pp_pics;
 701     picture_t *p_pic;
 702     int i;
 703
 704     if( fmt_out->video.i_width != p_sys->video.i_width ||
 705         fmt_out->video.i_height != p_sys->video.i_height ||
 706         fmt_out->video.i_chroma != p_sys->video.i_chroma ||
 707         fmt_out->video.i_aspect != p_sys->video.i_aspect )
 708     {
 709         if( !fmt_out->video.i_sar_num ||
 710             !fmt_out->video.i_sar_den )
 711         {
 712             fmt_out->video.i_sar_num =
 713                 fmt_out->video.i_aspect * fmt_out->video.i_height;
 714
 715             fmt_out->video.i_sar_den =
 716                 VOUT_ASPECT_FACTOR * fmt_out->video.i_width;
 717         }
 718
 719         vlc_ureduce( &fmt_out->video.i_sar_num,
 720                      &fmt_out->video.i_sar_den,
 721                      fmt_out->video.i_sar_num,
 722                      fmt_out->video.i_sar_den, 0 );
 723
 724         if( !fmt_out->video.i_visible_width ||
 725             !fmt_out->video.i_visible_height )
 726         {
 727             fmt_out->video.i_visible_width = fmt_out->video.i_width;
 728             fmt_out->video.i_visible_height = fmt_out->video.i_height;
 729         }
 730
 731         fmt_out->video.i_chroma = fmt_out->i_codec;
 732         p_sys->video = fmt_out->video;
 733
 734         for( i = 0; i < PICTURE_RING_SIZE; i++ )
 735         {
 736             if ( pp_ring[i] != NULL )
 737             {
 738                 if ( pp_ring[i]->i_status == DESTROYED_PICTURE )
 739                 {
 740                     free( pp_ring[i]->p_data_orig );
 741                     free( pp_ring[i]->p_sys );
 742                     free( pp_ring[i] );
 743                 }
 744                 else
 745                 {
 746                     pp_ring[i]->p_sys->b_dead = true;
 747                 }
 748                 pp_ring[i] = NULL;
 749             }
 750         }
 751     }
 752
 753     /* Find an empty space in the picture ring buffer */
 754     for( i = 0; i < PICTURE_RING_SIZE; i++ )
 755     {
 756         if( pp_ring[i] != NULL && pp_ring[i]->i_status == DESTROYED_PICTURE )
 757         {
 758             pp_ring[i]->i_status = RESERVED_PICTURE;
 759             pp_ring[i]->i_refcount = 1;
 760             return pp_ring[i];
 761         }
 762     }
 763     for( i = 0; i < PICTURE_RING_SIZE; i++ )
 764     {
 765         if( pp_ring[i] == NULL ) break;
 766     }
 767
 768     if( i == PICTURE_RING_SIZE )
 769     {
 770         msg_Err( p_this, "decoder/filter is leaking pictures, "
 771                  "resetting its ring buffer" );
 772
 773         for( i = 0; i < PICTURE_RING_SIZE; i++ )
 774         {
 775             pp_ring[i]->p_sys->b_dead = true;
 776             pp_ring[i]->pf_release( pp_ring[i] );
 777             pp_ring[i] = NULL;
 778         }
 779
 780         i = 0;
 781     }
 782
 783     p_pic = malloc( sizeof(picture_t) );
 784     if( !p_pic ) return NULL;
 785     fmt_out->video.i_chroma = fmt_out->i_codec;
 786     if( vout_AllocatePicture( p_this, p_pic,
 787                           fmt_out->video.i_chroma,
 788                           fmt_out->video.i_width,
 789                           fmt_out->video.i_height,
 790                           fmt_out->video.i_aspect ) != VLC_SUCCESS )
 791     {
 792         free( p_pic );
 793         return NULL;
 794     }
 795
 796     if( !p_pic->i_planes )
 797     {
 798         free( p_pic );
 799         return NULL;
 800     }
 801
 802     p_pic->pf_release = pf_release;
 803     p_pic->i_refcount = 1;
 804     p_pic->p_sys = malloc( sizeof(picture_sys_t) );
 805     p_pic->p_sys->p_owner = p_this;
 806     p_pic->p_sys->b_dead = false;
 807     p_pic->i_status = RESERVED_PICTURE;
 808
 809     pp_ring[i] = p_pic;
 810
 811     return p_pic;
 812 }
 813
 814 inline static void video_del_buffer_decoder( decoder_t *p_this,
 815                                              picture_t *p_pic )
 816 {
 817     VLC_UNUSED(p_this);
 818     video_del_buffer( p_pic );
 819 }
 820
 821 inline static void video_del_buffer_filter( filter_t *p_this,
 822                                             picture_t *p_pic )
 823 {
 824     VLC_UNUSED(p_this);
 825     video_del_buffer( p_pic );
 826 }
 827
 828 static void video_del_buffer( picture_t *p_pic )
 829 {
 830     p_pic->i_refcount = 0;
 831     p_pic->i_status = DESTROYED_PICTURE;
 832     if ( p_pic->p_sys->b_dead )
 833     {
 834         free( p_pic->p_data_orig );
 835         free( p_pic->p_sys );
 836         free( p_pic );
 837     }
 838 }
 839
 840 static void video_link_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
 841 {
 842     VLC_UNUSED(p_dec);
 843     p_pic->i_refcount++;
 844 }
 845
 846 static void video_unlink_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
 847 {
 848     VLC_UNUSED(p_dec);
 849     video_release_buffer_decoder( p_pic );
 850 }
 851
 852
 853 /**********************************************************************
 854  * Callback to update (some) params on the fly
 855  **********************************************************************/
 856 static int HeightCallback( vlc_object_t *p_this, char const *psz_var,
 857                            vlc_value_t oldval, vlc_value_t newval,
 858                            void *p_data )
 859 {
 860     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 861     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 862     sout_stream_sys_t *p_sys = p_stream->p_sys;
 863
 864     /* We create the handler before updating the value in p_sys
 865      * so we don't have to worry about locking */
 866     if( !p_sys->p_image && newval.i_int )
 867         p_sys->p_image = image_HandlerCreate( p_stream );
 868     p_sys->i_height = newval.i_int;
 869
 870     return VLC_SUCCESS;
 871 }
 872
 873 static int WidthCallback( vlc_object_t *p_this, char const *psz_var,
 874                            vlc_value_t oldval, vlc_value_t newval,
 875                            void *p_data )
 876 {
 877     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 878     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 879     sout_stream_sys_t *p_sys = p_stream->p_sys;
 880
 881     /* We create the handler before updating the value in p_sys
 882      * so we don't have to worry about locking */
 883     if( !p_sys->p_image && newval.i_int )
 884         p_sys->p_image = image_HandlerCreate( p_stream );
 885     p_sys->i_width = newval.i_int;
 886
 887     return VLC_SUCCESS;
 888 }
 889
 890 static int alphaCallback( vlc_object_t *p_this, char const *psz_var,
 891                           vlc_value_t oldval, vlc_value_t newval,
 892                           void *p_data )
 893 {
 894     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 895     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 896     sout_stream_sys_t *p_sys = p_stream->p_sys;
 897
 898     if( p_sys->p_es )
 899         p_sys->p_es->i_alpha = newval.i_int;
 900
 901     return VLC_SUCCESS;
 902 }
 903
 904 static int xCallback( vlc_object_t *p_this, char const *psz_var,
 905                       vlc_value_t oldval, vlc_value_t newval,
 906                       void *p_data )
 907 {
 908     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 909     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 910     sout_stream_sys_t *p_sys = p_stream->p_sys;
 911
 912     if( p_sys->p_es )
 913         p_sys->p_es->i_x = newval.i_int;
 914
 915     return VLC_SUCCESS;
 916 }
 917
 918 static int yCallback( vlc_object_t *p_this, char const *psz_var,
 919                       vlc_value_t oldval, vlc_value_t newval,
 920                       void *p_data )
 921 {
 922     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 923     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 924     sout_stream_sys_t *p_sys = p_stream->p_sys;
 925
 926     if( p_sys->p_es )
 927         p_sys->p_es->i_y = newval.i_int;
 928
 929     return VLC_SUCCESS;
 930 }