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 <vlc_common.h>
  34 #include <vlc_plugin.h>
  35 #include <vlc_sout.h>
  36 #include <vlc_block.h>
  37 #include <vlc_codec.h>
  38 #include <vlc_meta.h>
  39
  40 #include <vlc_image.h>
  41 #include <vlc_filter.h>
  42 #include <vlc_modules.h>
  43
  44 #include "../video_filter/mosaic.h"
  45
  46 /*****************************************************************************
  47  * Local structures
  48  *****************************************************************************/
  49 struct sout_stream_sys_t
  50 {
  51     bridged_es_t *p_es;
  52     vlc_mutex_t *p_lock;
  53
  54     decoder_t       *p_decoder;
  55     image_handler_t *p_image; /* filter for resizing */
  56     int i_height, i_width;
  57     unsigned int i_sar_num, i_sar_den;
  58     char *psz_id;
  59     bool b_inited;
  60
  61     int i_chroma; /* force image format chroma */
  62
  63     filter_chain_t *p_vf2;
  64 };
  65
  66 struct decoder_owner_sys_t
  67 {
  68     /* Current format in use by the output */
  69     video_format_t video;
  70 };
  71
  72 /*****************************************************************************
  73  * Local prototypes
  74  *****************************************************************************/
  75 static int  Open    ( vlc_object_t * );
  76 static void Close   ( vlc_object_t * );
  77 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
  78 static int               Del ( sout_stream_t *, sout_stream_id_t * );
  79 static int               Send( sout_stream_t *, sout_stream_id_t *, block_t * );
  80
  81 inline static void video_del_buffer_decoder( decoder_t *, picture_t * );
  82 inline static void video_del_buffer_filter( filter_t *, picture_t * );
  83
  84 inline static picture_t *video_new_buffer_decoder( decoder_t * );
  85 inline static picture_t *video_new_buffer_filter( filter_t * );
  86 static picture_t *video_new_buffer( vlc_object_t *, decoder_owner_sys_t *,
  87                                     es_format_t * );
  88
  89 static void video_link_picture_decoder( decoder_t *, picture_t * );
  90 static void video_unlink_picture_decoder( decoder_t *, picture_t * );
  91
  92 static int HeightCallback( vlc_object_t *, char const *,
  93                            vlc_value_t, vlc_value_t, void * );
  94 static int WidthCallback( vlc_object_t *, char const *,
  95                           vlc_value_t, vlc_value_t, void * );
  96 static int alphaCallback( vlc_object_t *, char const *,
  97                           vlc_value_t, vlc_value_t, void * );
  98 static int xCallback( vlc_object_t *, char const *,
  99                       vlc_value_t, vlc_value_t, void * );
 100 static int yCallback( vlc_object_t *, char const *,
 101                       vlc_value_t, vlc_value_t, void * );
 102
 103 /*****************************************************************************
 104  * Module descriptor
 105  *****************************************************************************/
 106 #define ID_TEXT N_("ID")
 107 #define ID_LONGTEXT N_( \
 108     "Specify an identifier string for this subpicture" )
 109
 110 #define WIDTH_TEXT N_("Video width")
 111 #define WIDTH_LONGTEXT N_( \
 112     "Output video width." )
 113 #define HEIGHT_TEXT N_("Video height")
 114 #define HEIGHT_LONGTEXT N_( \
 115     "Output video height." )
 116 #define RATIO_TEXT N_("Sample aspect ratio")
 117 #define RATIO_LONGTEXT N_( \
 118     "Sample aspect ratio of the destination (1:1, 3:4, 2:3)." )
 119
 120 #define VFILTER_TEXT N_("Video filter")
 121 #define VFILTER_LONGTEXT N_( \
 122     "Video filters will be applied to the video stream." )
 123
 124 #define CHROMA_TEXT N_("Image chroma")
 125 #define CHROMA_LONGTEXT N_( \
 126     "Force the use of a specific chroma. Use YUVA if you're planning " \
 127     "to use the Alphamask or Bluescreen video filter." )
 128
 129 #define ALPHA_TEXT N_("Transparency")
 130 #define ALPHA_LONGTEXT N_( \
 131     "Transparency of the mosaic picture." )
 132
 133 #define X_TEXT N_("X offset")
 134 #define X_LONGTEXT N_( \
 135     "X coordinate of the upper left corner in the mosaic if non negative." )
 136
 137 #define Y_TEXT N_("Y offset")
 138 #define Y_LONGTEXT N_( \
 139     "Y coordinate of the upper left corner in the mosaic if non negative." )
 140
 141 #define CFG_PREFIX "sout-mosaic-bridge-"
 142
 143 vlc_module_begin ()
 144     set_shortname( N_( "Mosaic bridge" ) )
 145     set_description(N_("Mosaic bridge stream output") )
 146     set_capability( "sout stream", 0 )
 147     add_shortcut( "mosaic-bridge" )
 148
 149     add_string( CFG_PREFIX "id", "Id", NULL, ID_TEXT, ID_LONGTEXT,
 150                 false )
 151     add_integer( CFG_PREFIX "width", 0, NULL, WIDTH_TEXT,
 152                  WIDTH_LONGTEXT, true )
 153     add_integer( CFG_PREFIX "height", 0, NULL, HEIGHT_TEXT,
 154                  HEIGHT_LONGTEXT, true )
 155     add_string( CFG_PREFIX "sar", "1:1", NULL, RATIO_TEXT,
 156                 RATIO_LONGTEXT, false )
 157     add_string( CFG_PREFIX "chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
 158                 false )
 159
 160     add_module_list( CFG_PREFIX "vfilter", "video filter2",
 161                      NULL, NULL, VFILTER_TEXT, VFILTER_LONGTEXT, false )
 162
 163     add_integer_with_range( CFG_PREFIX "alpha", 255, 0, 255, NULL,
 164                             ALPHA_TEXT, ALPHA_LONGTEXT, false )
 165     add_integer( CFG_PREFIX "x", -1, NULL, X_TEXT, X_LONGTEXT, false )
 166     add_integer( CFG_PREFIX "y", -1, NULL, Y_TEXT, Y_LONGTEXT, false )
 167
 168     set_callbacks( Open, Close )
 169 vlc_module_end ()
 170
 171 static const char *const ppsz_sout_options[] = {
 172     "id", "width", "height", "sar", "vfilter", "chroma", "alpha", "x", "y", NULL
 173 };
 174
 175 /*****************************************************************************
 176  * Open
 177  *****************************************************************************/
 178 static int Open( vlc_object_t *p_this )
 179 {
 180     sout_stream_t        *p_stream = (sout_stream_t *)p_this;
 181     sout_stream_sys_t    *p_sys;
 182     vlc_object_t         *p_libvlc = VLC_OBJECT( p_this->p_libvlc );
 183     vlc_value_t           val;
 184
 185     config_ChainParse( p_stream, CFG_PREFIX, ppsz_sout_options,
 186                        p_stream->p_cfg );
 187
 188     p_sys = malloc( sizeof( sout_stream_sys_t ) );
 189     if( !p_sys )
 190         return VLC_ENOMEM;
 191
 192     p_stream->p_sys = p_sys;
 193     p_sys->b_inited = false;
 194
 195     var_Create( p_libvlc, "mosaic-lock", VLC_VAR_MUTEX );
 196     var_Get( p_libvlc, "mosaic-lock", &val );
 197     p_sys->p_lock = val.p_address;
 198
 199     p_sys->psz_id = var_CreateGetString( p_stream, CFG_PREFIX "id" );
 200
 201     p_sys->i_height =
 202         var_CreateGetIntegerCommand( p_stream, CFG_PREFIX "height" );
 203     var_AddCallback( p_stream, CFG_PREFIX "height", HeightCallback, p_stream );
 204
 205     p_sys->i_width =
 206         var_CreateGetIntegerCommand( p_stream, CFG_PREFIX "width" );
 207     var_AddCallback( p_stream, CFG_PREFIX "width", WidthCallback, p_stream );
 208
 209     var_Get( p_stream, CFG_PREFIX "sar", &val );
 210     if( val.psz_string )
 211     {
 212         char *psz_parser = strchr( val.psz_string, ':' );
 213
 214         if( psz_parser )
 215         {
 216             *psz_parser++ = '\0';
 217             p_sys->i_sar_num = atoi( val.psz_string );
 218             p_sys->i_sar_den = atoi( psz_parser );
 219             vlc_ureduce( &p_sys->i_sar_num, &p_sys->i_sar_den,
 220                          p_sys->i_sar_num, p_sys->i_sar_den, 0 );
 221         }
 222         else
 223         {
 224             msg_Warn( p_stream, "bad aspect ratio %s", val.psz_string );
 225             p_sys->i_sar_num = p_sys->i_sar_den = 1;
 226         }
 227
 228         free( val.psz_string );
 229     }
 230     else
 231     {
 232         p_sys->i_sar_num = p_sys->i_sar_den = 1;
 233     }
 234
 235     p_sys->i_chroma = 0;
 236     val.psz_string = var_GetNonEmptyString( p_stream, CFG_PREFIX "chroma" );
 237     if( val.psz_string && strlen( val.psz_string ) >= 4 )
 238     {
 239         memcpy( &p_sys->i_chroma, val.psz_string, 4 );
 240         msg_Dbg( p_stream, "Forcing image chroma to 0x%.8x (%4.4s)", p_sys->i_chroma, (char*)&p_sys->i_chroma );
 241     }
 242     free( val.psz_string );
 243
 244 #define INT_COMMAND( a ) do { \
 245     var_Create( p_stream, CFG_PREFIX #a, \
 246                 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT | VLC_VAR_ISCOMMAND ); \
 247     var_AddCallback( p_stream, CFG_PREFIX #a, a ## Callback, \
 248                      p_stream ); } while(0)
 249     INT_COMMAND( alpha );
 250     INT_COMMAND( x );
 251     INT_COMMAND( y );
 252
 253 #undef INT_COMMAND
 254
 255     p_stream->pf_add    = Add;
 256     p_stream->pf_del    = Del;
 257     p_stream->pf_send   = Send;
 258
 259     p_stream->p_sout->i_out_pace_nocontrol++;
 260
 261     return VLC_SUCCESS;
 262 }
 263
 264 /*****************************************************************************
 265  * Close
 266  *****************************************************************************/
 267 static void Close( vlc_object_t * p_this )
 268 {
 269     sout_stream_t     *p_stream = (sout_stream_t*)p_this;
 270     sout_stream_sys_t *p_sys = p_stream->p_sys;
 271
 272     /* Delete the callbacks */
 273     var_DelCallback( p_stream, CFG_PREFIX "height", HeightCallback, p_stream );
 274     var_DelCallback( p_stream, CFG_PREFIX "width", WidthCallback, p_stream );
 275     var_DelCallback( p_stream, CFG_PREFIX "alpha", alphaCallback, p_stream );
 276     var_DelCallback( p_stream, CFG_PREFIX "x", xCallback, p_stream );
 277     var_DelCallback( p_stream, CFG_PREFIX "y", yCallback, p_stream );
 278
 279     p_stream->p_sout->i_out_pace_nocontrol--;
 280
 281     free( p_sys->psz_id );
 282
 283     free( p_sys );
 284 }
 285
 286 static int video_filter_buffer_allocation_init( filter_t *p_filter, void *p_data )
 287 {
 288     p_filter->pf_video_buffer_new = video_new_buffer_filter;
 289     p_filter->pf_video_buffer_del = video_del_buffer_filter;
 290     p_filter->p_owner = p_data;
 291     return VLC_SUCCESS;
 292 }
 293
 294 static sout_stream_id_t * Add( sout_stream_t *p_stream, es_format_t *p_fmt )
 295 {
 296     sout_stream_sys_t *p_sys = p_stream->p_sys;
 297     bridge_t *p_bridge;
 298     bridged_es_t *p_es;
 299     char *psz_chain;
 300     int i;
 301
 302     if( p_sys->b_inited || p_fmt->i_cat != VIDEO_ES )
 303         return NULL;
 304
 305     /* Create decoder object */
 306     p_sys->p_decoder = vlc_object_create( p_stream, sizeof( decoder_t ) );
 307     if( !p_sys->p_decoder )
 308         return NULL;
 309     vlc_object_attach( p_sys->p_decoder, p_stream );
 310     p_sys->p_decoder->p_module = NULL;
 311     p_sys->p_decoder->fmt_in = *p_fmt;
 312     p_sys->p_decoder->b_pace_control = false;
 313     p_sys->p_decoder->fmt_out = p_sys->p_decoder->fmt_in;
 314     p_sys->p_decoder->fmt_out.i_extra = 0;
 315     p_sys->p_decoder->fmt_out.p_extra = 0;
 316     p_sys->p_decoder->pf_decode_video = 0;
 317     p_sys->p_decoder->pf_vout_buffer_new = video_new_buffer_decoder;
 318     p_sys->p_decoder->pf_vout_buffer_del = video_del_buffer_decoder;
 319     p_sys->p_decoder->pf_picture_link    = video_link_picture_decoder;
 320     p_sys->p_decoder->pf_picture_unlink  = video_unlink_picture_decoder;
 321     p_sys->p_decoder->p_owner = malloc( sizeof(decoder_owner_sys_t) );
 322     if( !p_sys->p_decoder->p_owner )
 323     {
 324         vlc_object_release( p_sys->p_decoder );
 325         return NULL;
 326     }
 327
 328     p_sys->p_decoder->p_owner->video = p_fmt->video;
 329     //p_sys->p_decoder->p_cfg = p_sys->p_video_cfg;
 330
 331     p_sys->p_decoder->p_module =
 332         module_need( p_sys->p_decoder, "decoder", "$codec", false );
 333
 334     if( !p_sys->p_decoder->p_module || !p_sys->p_decoder->pf_decode_video )
 335     {
 336         if( p_sys->p_decoder->p_module )
 337         {
 338             msg_Err( p_stream, "instanciated a non video decoder" );
 339             module_unneed( p_sys->p_decoder, p_sys->p_decoder->p_module );
 340         }
 341         else
 342         {
 343             msg_Err( p_stream, "cannot find decoder" );
 344         }
 345         free( p_sys->p_decoder->p_owner );
 346         vlc_object_release( p_sys->p_decoder );
 347         return NULL;
 348     }
 349
 350     p_sys->b_inited = true;
 351     vlc_mutex_lock( p_sys->p_lock );
 352
 353     p_bridge = GetBridge( p_stream );
 354     if ( p_bridge == NULL )
 355     {
 356         vlc_object_t *p_libvlc = VLC_OBJECT( p_stream->p_libvlc );
 357         vlc_value_t val;
 358
 359         p_bridge = xmalloc( sizeof( bridge_t ) );
 360
 361         var_Create( p_libvlc, "mosaic-struct", VLC_VAR_ADDRESS );
 362         val.p_address = p_bridge;
 363         var_Set( p_libvlc, "mosaic-struct", val );
 364
 365         p_bridge->i_es_num = 0;
 366         p_bridge->pp_es = NULL;
 367     }
 368
 369     for ( i = 0; i < p_bridge->i_es_num; i++ )
 370     {
 371         if ( p_bridge->pp_es[i]->b_empty )
 372             break;
 373     }
 374
 375     if ( i == p_bridge->i_es_num )
 376     {
 377         p_bridge->pp_es = xrealloc( p_bridge->pp_es,
 378                           (p_bridge->i_es_num + 1) * sizeof(bridged_es_t *) );
 379         p_bridge->i_es_num++;
 380         p_bridge->pp_es[i] = xmalloc( sizeof(bridged_es_t) );
 381     }
 382
 383     p_sys->p_es = p_es = p_bridge->pp_es[i];
 384
 385     p_es->i_alpha = var_GetInteger( p_stream, CFG_PREFIX "alpha" );
 386     p_es->i_x = var_GetInteger( p_stream, CFG_PREFIX "x" );
 387     p_es->i_y = var_GetInteger( p_stream, CFG_PREFIX "y" );
 388
 389     //p_es->fmt = *p_fmt;
 390     p_es->psz_id = p_sys->psz_id;
 391     p_es->p_picture = NULL;
 392     p_es->pp_last = &p_es->p_picture;
 393     p_es->b_empty = false;
 394
 395     vlc_mutex_unlock( p_sys->p_lock );
 396
 397     if ( p_sys->i_height || p_sys->i_width )
 398     {
 399         p_sys->p_image = image_HandlerCreate( p_stream );
 400     }
 401     else
 402     {
 403         p_sys->p_image = NULL;
 404     }
 405
 406     msg_Dbg( p_stream, "mosaic bridge id=%s pos=%d", p_es->psz_id, i );
 407
 408     /* Create user specified video filters */
 409     psz_chain = var_GetNonEmptyString( p_stream, CFG_PREFIX "vfilter" );
 410     msg_Dbg( p_stream, "psz_chain: %s", psz_chain );
 411     if( psz_chain )
 412     {
 413         p_sys->p_vf2 = filter_chain_New( p_stream, "video filter2", false,
 414                                          video_filter_buffer_allocation_init,
 415                                          NULL, p_sys->p_decoder->p_owner );
 416         es_format_t fmt;
 417         es_format_Copy( &fmt, &p_sys->p_decoder->fmt_out );
 418         if( p_sys->i_chroma )
 419             fmt.video.i_chroma = p_sys->i_chroma;
 420         filter_chain_Reset( p_sys->p_vf2, &fmt, &fmt );
 421         filter_chain_AppendFromString( p_sys->p_vf2, psz_chain );
 422         free( psz_chain );
 423     }
 424     else
 425     {
 426         p_sys->p_vf2 = NULL;
 427     }
 428
 429     return (sout_stream_id_t *)p_sys;
 430 }
 431
 432 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
 433 {
 434     VLC_UNUSED(id);
 435     sout_stream_sys_t *p_sys = p_stream->p_sys;
 436     bridge_t *p_bridge;
 437     bridged_es_t *p_es;
 438     bool b_last_es = true;
 439     int i;
 440
 441     if( !p_sys->b_inited )
 442         return VLC_SUCCESS;
 443
 444     if( p_sys->p_decoder != NULL )
 445     {
 446         decoder_owner_sys_t *p_owner = p_sys->p_decoder->p_owner;
 447
 448         if( p_sys->p_decoder->p_module )
 449             module_unneed( p_sys->p_decoder, p_sys->p_decoder->p_module );
 450         if( p_sys->p_decoder->p_description )
 451             vlc_meta_Delete( p_sys->p_decoder->p_description );
 452
 453         vlc_object_release( p_sys->p_decoder );
 454
 455         free( p_owner );
 456     }
 457
 458     /* Destroy user specified video filters */
 459     if( p_sys->p_vf2 )
 460         filter_chain_Delete( p_sys->p_vf2 );
 461
 462     vlc_mutex_lock( p_sys->p_lock );
 463
 464     p_bridge = GetBridge( p_stream );
 465     p_es = p_sys->p_es;
 466
 467     p_es->b_empty = true;
 468     while ( p_es->p_picture )
 469     {
 470         picture_t *p_next = p_es->p_picture->p_next;
 471         picture_Release( p_es->p_picture );
 472         p_es->p_picture = p_next;
 473     }
 474
 475     for ( i = 0; i < p_bridge->i_es_num; i++ )
 476     {
 477         if ( !p_bridge->pp_es[i]->b_empty )
 478         {
 479             b_last_es = false;
 480             break;
 481         }
 482     }
 483
 484     if ( b_last_es )
 485     {
 486         vlc_object_t *p_libvlc = VLC_OBJECT( p_stream->p_libvlc );
 487         for ( i = 0; i < p_bridge->i_es_num; i++ )
 488             free( p_bridge->pp_es[i] );
 489         free( p_bridge->pp_es );
 490         free( p_bridge );
 491         var_Destroy( p_libvlc, "mosaic-struct" );
 492     }
 493
 494     vlc_mutex_unlock( p_sys->p_lock );
 495
 496     if ( p_sys->p_image )
 497     {
 498         image_HandlerDelete( p_sys->p_image );
 499     }
 500
 501     p_sys->b_inited = false;
 502
 503     return VLC_SUCCESS;
 504 }
 505
 506 /*****************************************************************************
 507  * PushPicture : push a picture in the mosaic-struct structure
 508  *****************************************************************************/
 509 static void PushPicture( sout_stream_t *p_stream, picture_t *p_picture )
 510 {
 511     sout_stream_sys_t *p_sys = p_stream->p_sys;
 512     bridged_es_t *p_es = p_sys->p_es;
 513
 514     vlc_mutex_lock( p_sys->p_lock );
 515
 516     *p_es->pp_last = p_picture;
 517     p_picture->p_next = NULL;
 518     p_es->pp_last = &p_picture->p_next;
 519
 520     vlc_mutex_unlock( p_sys->p_lock );
 521 }
 522
 523 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
 524                  block_t *p_buffer )
 525 {
 526     sout_stream_sys_t *p_sys = p_stream->p_sys;
 527     picture_t *p_pic;
 528
 529     if ( (sout_stream_sys_t *)id != p_sys )
 530     {
 531         block_ChainRelease( p_buffer );
 532         return VLC_SUCCESS;
 533     }
 534
 535     while ( (p_pic = p_sys->p_decoder->pf_decode_video( p_sys->p_decoder,
 536                                                         &p_buffer )) )
 537     {
 538         picture_t *p_new_pic;
 539
 540         if( p_sys->i_height || p_sys->i_width )
 541         {
 542             video_format_t fmt_out, fmt_in;
 543
 544             memset( &fmt_in, 0, sizeof(video_format_t) );
 545             memset( &fmt_out, 0, sizeof(video_format_t) );
 546             fmt_in = p_sys->p_decoder->fmt_out.video;
 547
 548
 549             if( p_sys->i_chroma )
 550                 fmt_out.i_chroma = p_sys->i_chroma;
 551             else
 552                 fmt_out.i_chroma = VLC_CODEC_I420;
 553
 554             const unsigned i_fmt_in_aspect =
 555                 (int64_t)VOUT_ASPECT_FACTOR *
 556                 fmt_in.i_sar_num * fmt_in.i_width /
 557                 (fmt_in.i_sar_den * fmt_in.i_height);
 558             if ( !p_sys->i_height )
 559             {
 560                 fmt_out.i_width = p_sys->i_width;
 561                 fmt_out.i_height = (p_sys->i_width * VOUT_ASPECT_FACTOR
 562                     * p_sys->i_sar_num / p_sys->i_sar_den / i_fmt_in_aspect)
 563                       & ~0x1;
 564             }
 565             else if ( !p_sys->i_width )
 566             {
 567                 fmt_out.i_height = p_sys->i_height;
 568                 fmt_out.i_width = (p_sys->i_height * i_fmt_in_aspect
 569                     * p_sys->i_sar_den / p_sys->i_sar_num / VOUT_ASPECT_FACTOR)
 570                       & ~0x1;
 571             }
 572             else
 573             {
 574                 fmt_out.i_width = p_sys->i_width;
 575                 fmt_out.i_height = p_sys->i_height;
 576             }
 577             fmt_out.i_visible_width = fmt_out.i_width;
 578             fmt_out.i_visible_height = fmt_out.i_height;
 579
 580             p_new_pic = image_Convert( p_sys->p_image,
 581                                        p_pic, &fmt_in, &fmt_out );
 582             if( p_new_pic == NULL )
 583             {
 584                 msg_Err( p_stream, "image conversion failed" );
 585                 picture_Release( p_pic );
 586                 continue;
 587             }
 588         }
 589         else
 590         {
 591             /* TODO: chroma conversion if needed */
 592
 593             p_new_pic = picture_New( p_pic->format.i_chroma,
 594                                      p_pic->format.i_width, p_pic->format.i_height,
 595                                      p_sys->p_decoder->fmt_out.video.i_sar_num,
 596                                      p_sys->p_decoder->fmt_out.video.i_sar_den );
 597             if( !p_new_pic )
 598             {
 599                 picture_Release( p_pic );
 600                 msg_Err( p_stream, "image allocation failed" );
 601                 continue;
 602             }
 603
 604             picture_Copy( p_new_pic, p_pic );
 605         }
 606         picture_Release( p_pic );
 607
 608         if( p_sys->p_vf2 )
 609             p_new_pic = filter_chain_VideoFilter( p_sys->p_vf2, p_new_pic );
 610
 611         PushPicture( p_stream, p_new_pic );
 612     }
 613
 614     return VLC_SUCCESS;
 615 }
 616
 617 inline static picture_t *video_new_buffer_decoder( decoder_t *p_dec )
 618 {
 619     return video_new_buffer( VLC_OBJECT( p_dec ),
 620                              (decoder_owner_sys_t *)p_dec->p_owner,
 621                              &p_dec->fmt_out );
 622 }
 623
 624 inline static picture_t *video_new_buffer_filter( filter_t *p_filter )
 625 {
 626     return video_new_buffer( VLC_OBJECT( p_filter ),
 627                              (decoder_owner_sys_t *)p_filter->p_owner,
 628                              &p_filter->fmt_out );
 629 }
 630
 631 static picture_t *video_new_buffer( vlc_object_t *p_this,
 632                                     decoder_owner_sys_t *p_sys,
 633                                     es_format_t *fmt_out )
 634 {
 635     VLC_UNUSED(p_this);
 636     if( fmt_out->video.i_width != p_sys->video.i_width ||
 637         fmt_out->video.i_height != p_sys->video.i_height ||
 638         fmt_out->video.i_chroma != p_sys->video.i_chroma ||
 639         (int64_t)fmt_out->video.i_sar_num * p_sys->video.i_sar_den !=
 640         (int64_t)fmt_out->video.i_sar_den * p_sys->video.i_sar_num )
 641     {
 642         vlc_ureduce( &fmt_out->video.i_sar_num,
 643                      &fmt_out->video.i_sar_den,
 644                      fmt_out->video.i_sar_num,
 645                      fmt_out->video.i_sar_den, 0 );
 646
 647         if( !fmt_out->video.i_visible_width ||
 648             !fmt_out->video.i_visible_height )
 649         {
 650             fmt_out->video.i_visible_width = fmt_out->video.i_width;
 651             fmt_out->video.i_visible_height = fmt_out->video.i_height;
 652         }
 653
 654         fmt_out->video.i_chroma = fmt_out->i_codec;
 655         p_sys->video = fmt_out->video;
 656     }
 657
 658     /* */
 659     fmt_out->video.i_chroma = fmt_out->i_codec;
 660
 661     return picture_NewFromFormat( &fmt_out->video );
 662 }
 663
 664 inline static void video_del_buffer_decoder( decoder_t *p_this,
 665                                              picture_t *p_pic )
 666 {
 667     VLC_UNUSED(p_this);
 668     picture_Release( p_pic );
 669 }
 670
 671 inline static void video_del_buffer_filter( filter_t *p_this,
 672                                             picture_t *p_pic )
 673 {
 674     VLC_UNUSED(p_this);
 675     picture_Release( p_pic );
 676 }
 677
 678 static void video_link_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
 679 {
 680     VLC_UNUSED(p_dec);
 681     picture_Hold( p_pic );
 682 }
 683
 684 static void video_unlink_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
 685 {
 686     VLC_UNUSED(p_dec);
 687     picture_Release( p_pic );
 688 }
 689
 690
 691 /**********************************************************************
 692  * Callback to update (some) params on the fly
 693  **********************************************************************/
 694 static int HeightCallback( vlc_object_t *p_this, char const *psz_var,
 695                            vlc_value_t oldval, vlc_value_t newval,
 696                            void *p_data )
 697 {
 698     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 699     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 700     sout_stream_sys_t *p_sys = p_stream->p_sys;
 701
 702     /* We create the handler before updating the value in p_sys
 703      * so we don't have to worry about locking */
 704     if( !p_sys->p_image && newval.i_int )
 705         p_sys->p_image = image_HandlerCreate( p_stream );
 706     p_sys->i_height = newval.i_int;
 707
 708     return VLC_SUCCESS;
 709 }
 710
 711 static int WidthCallback( vlc_object_t *p_this, char const *psz_var,
 712                            vlc_value_t oldval, vlc_value_t newval,
 713                            void *p_data )
 714 {
 715     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 716     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 717     sout_stream_sys_t *p_sys = p_stream->p_sys;
 718
 719     /* We create the handler before updating the value in p_sys
 720      * so we don't have to worry about locking */
 721     if( !p_sys->p_image && newval.i_int )
 722         p_sys->p_image = image_HandlerCreate( p_stream );
 723     p_sys->i_width = newval.i_int;
 724
 725     return VLC_SUCCESS;
 726 }
 727
 728 static int alphaCallback( vlc_object_t *p_this, char const *psz_var,
 729                           vlc_value_t oldval, vlc_value_t newval,
 730                           void *p_data )
 731 {
 732     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 733     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 734     sout_stream_sys_t *p_sys = p_stream->p_sys;
 735
 736     if( p_sys->p_es )
 737         p_sys->p_es->i_alpha = newval.i_int;
 738
 739     return VLC_SUCCESS;
 740 }
 741
 742 static int xCallback( vlc_object_t *p_this, char const *psz_var,
 743                       vlc_value_t oldval, vlc_value_t newval,
 744                       void *p_data )
 745 {
 746     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 747     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 748     sout_stream_sys_t *p_sys = p_stream->p_sys;
 749
 750     if( p_sys->p_es )
 751         p_sys->p_es->i_x = newval.i_int;
 752
 753     return VLC_SUCCESS;
 754 }
 755
 756 static int yCallback( vlc_object_t *p_this, char const *psz_var,
 757                       vlc_value_t oldval, vlc_value_t newval,
 758                       void *p_data )
 759 {
 760     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 761     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 762     sout_stream_sys_t *p_sys = p_stream->p_sys;
 763
 764     if( p_sys->p_es )
 765         p_sys->p_es->i_y = newval.i_int;
 766
 767     return VLC_SUCCESS;
 768 }