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
  43 #include "../video_filter/mosaic.h"
  44
  45 /*****************************************************************************
  46  * Local structures
  47  *****************************************************************************/
  48 struct sout_stream_sys_t
  49 {
  50     bridged_es_t *p_es;
  51     vlc_mutex_t *p_lock;
  52
  53     decoder_t       *p_decoder;
  54     image_handler_t *p_image; /* filter for resizing */
  55     int i_height, i_width;
  56     unsigned int i_sar_num, i_sar_den;
  57     char *psz_id;
  58     bool b_inited;
  59
  60     int i_chroma; /* force image format chroma */
  61
  62     filter_chain_t *p_vf2;
  63 };
  64
  65 struct decoder_owner_sys_t
  66 {
  67     /* Current format in use by the output */
  68     video_format_t video;
  69 };
  70
  71 /*****************************************************************************
  72  * Local prototypes
  73  *****************************************************************************/
  74 static int  Open    ( vlc_object_t * );
  75 static void Close   ( vlc_object_t * );
  76 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
  77 static int               Del ( sout_stream_t *, sout_stream_id_t * );
  78 static int               Send( sout_stream_t *, sout_stream_id_t *, block_t * );
  79
  80 inline static void video_del_buffer_decoder( decoder_t *, picture_t * );
  81 inline static void video_del_buffer_filter( filter_t *, picture_t * );
  82
  83 inline static picture_t *video_new_buffer_decoder( decoder_t * );
  84 inline static picture_t *video_new_buffer_filter( filter_t * );
  85 static picture_t *video_new_buffer( vlc_object_t *, decoder_owner_sys_t *,
  86                                     es_format_t * );
  87
  88 static void video_link_picture_decoder( decoder_t *, picture_t * );
  89 static void video_unlink_picture_decoder( decoder_t *, picture_t * );
  90
  91 static int HeightCallback( vlc_object_t *, char const *,
  92                            vlc_value_t, vlc_value_t, void * );
  93 static int WidthCallback( vlc_object_t *, char const *,
  94                           vlc_value_t, vlc_value_t, void * );
  95 static int alphaCallback( vlc_object_t *, char const *,
  96                           vlc_value_t, vlc_value_t, void * );
  97 static int xCallback( vlc_object_t *, char const *,
  98                       vlc_value_t, vlc_value_t, void * );
  99 static int yCallback( vlc_object_t *, char const *,
 100                       vlc_value_t, vlc_value_t, void * );
 101
 102 /*****************************************************************************
 103  * Module descriptor
 104  *****************************************************************************/
 105 #define ID_TEXT N_("ID")
 106 #define ID_LONGTEXT N_( \
 107     "Specify an identifier string for this subpicture" )
 108
 109 #define WIDTH_TEXT N_("Video width")
 110 #define WIDTH_LONGTEXT N_( \
 111     "Output video width." )
 112 #define HEIGHT_TEXT N_("Video height")
 113 #define HEIGHT_LONGTEXT N_( \
 114     "Output video height." )
 115 #define RATIO_TEXT N_("Sample aspect ratio")
 116 #define RATIO_LONGTEXT N_( \
 117     "Sample aspect ratio of the destination (1:1, 3:4, 2:3)." )
 118
 119 #define VFILTER_TEXT N_("Video filter")
 120 #define VFILTER_LONGTEXT N_( \
 121     "Video filters will be applied to the video stream." )
 122
 123 #define CHROMA_TEXT N_("Image chroma")
 124 #define CHROMA_LONGTEXT N_( \
 125     "Force the use of a specific chroma. Use YUVA if you're planning " \
 126     "to use the Alphamask or Bluescreen video filter." )
 127
 128 #define ALPHA_TEXT N_("Transparency")
 129 #define ALPHA_LONGTEXT N_( \
 130     "Transparency of the mosaic picture." )
 131
 132 #define X_TEXT N_("X offset")
 133 #define X_LONGTEXT N_( \
 134     "X coordinate of the upper left corner in the mosaic if non negative." )
 135
 136 #define Y_TEXT N_("Y offset")
 137 #define Y_LONGTEXT N_( \
 138     "Y coordinate of the upper left corner in the mosaic if non negative." )
 139
 140 #define CFG_PREFIX "sout-mosaic-bridge-"
 141
 142 vlc_module_begin ()
 143     set_shortname( N_( "Mosaic bridge" ) )
 144     set_description(N_("Mosaic bridge stream output") )
 145     set_capability( "sout stream", 0 )
 146     add_shortcut( "mosaic-bridge" )
 147
 148     add_string( CFG_PREFIX "id", "Id", NULL, ID_TEXT, ID_LONGTEXT,
 149                 false )
 150     add_integer( CFG_PREFIX "width", 0, NULL, WIDTH_TEXT,
 151                  WIDTH_LONGTEXT, true )
 152     add_integer( CFG_PREFIX "height", 0, NULL, HEIGHT_TEXT,
 153                  HEIGHT_LONGTEXT, true )
 154     add_string( CFG_PREFIX "sar", "1:1", NULL, RATIO_TEXT,
 155                 RATIO_LONGTEXT, false )
 156     add_string( CFG_PREFIX "chroma", NULL, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
 157                 false )
 158
 159     add_module_list( CFG_PREFIX "vfilter", "video filter2",
 160                      NULL, NULL, VFILTER_TEXT, VFILTER_LONGTEXT, false )
 161
 162     add_integer_with_range( CFG_PREFIX "alpha", 255, 0, 255, NULL,
 163                             ALPHA_TEXT, ALPHA_LONGTEXT, false )
 164     add_integer( CFG_PREFIX "x", -1, NULL, X_TEXT, X_LONGTEXT, false )
 165     add_integer( CFG_PREFIX "y", -1, NULL, Y_TEXT, Y_LONGTEXT, false )
 166
 167     set_callbacks( Open, Close )
 168 vlc_module_end ()
 169
 170 static const char *const ppsz_sout_options[] = {
 171     "id", "width", "height", "sar", "vfilter", "chroma", "alpha", "x", "y", NULL
 172 };
 173
 174 /*****************************************************************************
 175  * Open
 176  *****************************************************************************/
 177 static int Open( vlc_object_t *p_this )
 178 {
 179     sout_stream_t        *p_stream = (sout_stream_t *)p_this;
 180     sout_stream_sys_t    *p_sys;
 181     vlc_object_t         *p_libvlc = VLC_OBJECT( p_this->p_libvlc );
 182     vlc_value_t           val;
 183
 184     config_ChainParse( p_stream, CFG_PREFIX, ppsz_sout_options,
 185                        p_stream->p_cfg );
 186
 187     p_sys = malloc( sizeof( sout_stream_sys_t ) );
 188     if( !p_sys )
 189         return VLC_ENOMEM;
 190
 191     p_stream->p_sys = p_sys;
 192     p_sys->b_inited = false;
 193
 194     var_Create( p_libvlc, "mosaic-lock", VLC_VAR_MUTEX );
 195     var_Get( p_libvlc, "mosaic-lock", &val );
 196     p_sys->p_lock = val.p_address;
 197
 198     p_sys->psz_id = var_CreateGetString( p_stream, CFG_PREFIX "id" );
 199
 200     p_sys->i_height =
 201         var_CreateGetIntegerCommand( p_stream, CFG_PREFIX "height" );
 202     var_AddCallback( p_stream, CFG_PREFIX "height", HeightCallback, p_stream );
 203
 204     p_sys->i_width =
 205         var_CreateGetIntegerCommand( p_stream, CFG_PREFIX "width" );
 206     var_AddCallback( p_stream, CFG_PREFIX "width", WidthCallback, p_stream );
 207
 208     var_Get( p_stream, CFG_PREFIX "sar", &val );
 209     if( val.psz_string )
 210     {
 211         char *psz_parser = strchr( val.psz_string, ':' );
 212
 213         if( psz_parser )
 214         {
 215             *psz_parser++ = '\0';
 216             p_sys->i_sar_num = atoi( val.psz_string );
 217             p_sys->i_sar_den = atoi( psz_parser );
 218             vlc_ureduce( &p_sys->i_sar_num, &p_sys->i_sar_den,
 219                          p_sys->i_sar_num, p_sys->i_sar_den, 0 );
 220         }
 221         else
 222         {
 223             msg_Warn( p_stream, "bad aspect ratio %s", val.psz_string );
 224             p_sys->i_sar_num = p_sys->i_sar_den = 1;
 225         }
 226
 227         free( val.psz_string );
 228     }
 229     else
 230     {
 231         p_sys->i_sar_num = p_sys->i_sar_den = 1;
 232     }
 233
 234     p_sys->i_chroma = 0;
 235     val.psz_string = var_GetNonEmptyString( p_stream, CFG_PREFIX "chroma" );
 236     if( val.psz_string && strlen( val.psz_string ) >= 4 )
 237     {
 238         memcpy( &p_sys->i_chroma, val.psz_string, 4 );
 239         msg_Dbg( p_stream, "Forcing image chroma to 0x%.8x (%4.4s)", p_sys->i_chroma, (char*)&p_sys->i_chroma );
 240     }
 241     free( val.psz_string );
 242
 243 #define INT_COMMAND( a ) do { \
 244     var_Create( p_stream, CFG_PREFIX #a, \
 245                 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT | VLC_VAR_ISCOMMAND ); \
 246     var_AddCallback( p_stream, CFG_PREFIX #a, a ## Callback, \
 247                      p_stream ); } while(0)
 248     INT_COMMAND( alpha );
 249     INT_COMMAND( x );
 250     INT_COMMAND( y );
 251
 252 #undef INT_COMMAND
 253
 254     p_stream->pf_add    = Add;
 255     p_stream->pf_del    = Del;
 256     p_stream->pf_send   = Send;
 257
 258     p_stream->p_sout->i_out_pace_nocontrol++;
 259
 260     return VLC_SUCCESS;
 261 }
 262
 263 /*****************************************************************************
 264  * Close
 265  *****************************************************************************/
 266 static void Close( vlc_object_t * p_this )
 267 {
 268     sout_stream_t     *p_stream = (sout_stream_t*)p_this;
 269     sout_stream_sys_t *p_sys = p_stream->p_sys;
 270
 271     /* Delete the callbacks */
 272     var_DelCallback( p_stream, CFG_PREFIX "height", HeightCallback, p_stream );
 273     var_DelCallback( p_stream, CFG_PREFIX "width", WidthCallback, p_stream );
 274     var_DelCallback( p_stream, CFG_PREFIX "alpha", alphaCallback, p_stream );
 275     var_DelCallback( p_stream, CFG_PREFIX "x", xCallback, p_stream );
 276     var_DelCallback( p_stream, CFG_PREFIX "y", yCallback, p_stream );
 277
 278     p_stream->p_sout->i_out_pace_nocontrol--;
 279
 280     free( p_sys->psz_id );
 281
 282     free( p_sys );
 283 }
 284
 285 static int video_filter_buffer_allocation_init( filter_t *p_filter, void *p_data )
 286 {
 287     p_filter->pf_vout_buffer_new = video_new_buffer_filter;
 288     p_filter->pf_vout_buffer_del = video_del_buffer_filter;
 289     p_filter->p_owner = p_data;
 290     return VLC_SUCCESS;
 291 }
 292
 293 static sout_stream_id_t * Add( sout_stream_t *p_stream, es_format_t *p_fmt )
 294 {
 295     sout_stream_sys_t *p_sys = p_stream->p_sys;
 296     bridge_t *p_bridge;
 297     bridged_es_t *p_es;
 298     char *psz_chain;
 299     int i;
 300
 301     if( p_sys->b_inited || p_fmt->i_cat != VIDEO_ES )
 302         return NULL;
 303
 304     /* Create decoder object */
 305     p_sys->p_decoder = vlc_object_create( p_stream, VLC_OBJECT_DECODER );
 306     if( !p_sys->p_decoder )
 307         return NULL;
 308     vlc_object_attach( p_sys->p_decoder, p_stream );
 309     p_sys->p_decoder->p_module = NULL;
 310     p_sys->p_decoder->fmt_in = *p_fmt;
 311     p_sys->p_decoder->b_pace_control = false;
 312     p_sys->p_decoder->fmt_out = p_sys->p_decoder->fmt_in;
 313     p_sys->p_decoder->fmt_out.i_extra = 0;
 314     p_sys->p_decoder->fmt_out.p_extra = 0;
 315     p_sys->p_decoder->pf_decode_video = 0;
 316     p_sys->p_decoder->pf_vout_buffer_new = video_new_buffer_decoder;
 317     p_sys->p_decoder->pf_vout_buffer_del = video_del_buffer_decoder;
 318     p_sys->p_decoder->pf_picture_link    = video_link_picture_decoder;
 319     p_sys->p_decoder->pf_picture_unlink  = video_unlink_picture_decoder;
 320     p_sys->p_decoder->p_owner = malloc( sizeof(decoder_owner_sys_t) );
 321     if( !p_sys->p_decoder->p_owner )
 322     {
 323         vlc_object_detach( p_sys->p_decoder );
 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_detach( p_sys->p_decoder );
 347         vlc_object_release( p_sys->p_decoder );
 348         return NULL;
 349     }
 350
 351     p_sys->b_inited = true;
 352     vlc_mutex_lock( p_sys->p_lock );
 353
 354     p_bridge = GetBridge( p_stream );
 355     if ( p_bridge == NULL )
 356     {
 357         vlc_object_t *p_libvlc = VLC_OBJECT( p_stream->p_libvlc );
 358         vlc_value_t val;
 359
 360         p_bridge = xmalloc( sizeof( bridge_t ) );
 361
 362         var_Create( p_libvlc, "mosaic-struct", VLC_VAR_ADDRESS );
 363         val.p_address = p_bridge;
 364         var_Set( p_libvlc, "mosaic-struct", val );
 365
 366         p_bridge->i_es_num = 0;
 367         p_bridge->pp_es = NULL;
 368     }
 369
 370     for ( i = 0; i < p_bridge->i_es_num; i++ )
 371     {
 372         if ( p_bridge->pp_es[i]->b_empty )
 373             break;
 374     }
 375
 376     if ( i == p_bridge->i_es_num )
 377     {
 378         p_bridge->pp_es = xrealloc( p_bridge->pp_es,
 379                           (p_bridge->i_es_num + 1) * sizeof(bridged_es_t *) );
 380         p_bridge->i_es_num++;
 381         p_bridge->pp_es[i] = xmalloc( sizeof(bridged_es_t) );
 382     }
 383
 384     p_sys->p_es = p_es = p_bridge->pp_es[i];
 385
 386     p_es->i_alpha = var_GetInteger( p_stream, CFG_PREFIX "alpha" );
 387     p_es->i_x = var_GetInteger( p_stream, CFG_PREFIX "x" );
 388     p_es->i_y = var_GetInteger( p_stream, CFG_PREFIX "y" );
 389
 390     //p_es->fmt = *p_fmt;
 391     p_es->psz_id = p_sys->psz_id;
 392     p_es->p_picture = NULL;
 393     p_es->pp_last = &p_es->p_picture;
 394     p_es->b_empty = false;
 395
 396     vlc_mutex_unlock( p_sys->p_lock );
 397
 398     if ( p_sys->i_height || p_sys->i_width )
 399     {
 400         p_sys->p_image = image_HandlerCreate( p_stream );
 401     }
 402     else
 403     {
 404         p_sys->p_image = NULL;
 405     }
 406
 407     msg_Dbg( p_stream, "mosaic bridge id=%s pos=%d", p_es->psz_id, i );
 408
 409     /* Create user specified video filters */
 410     psz_chain = var_GetNonEmptyString( p_stream, CFG_PREFIX "vfilter" );
 411     msg_Dbg( p_stream, "psz_chain: %s", psz_chain );
 412     if( psz_chain )
 413     {
 414         p_sys->p_vf2 = filter_chain_New( p_stream, "video filter2", false,
 415                                          video_filter_buffer_allocation_init,
 416                                          NULL, p_sys->p_decoder->p_owner );
 417         es_format_t fmt;
 418         es_format_Copy( &fmt, &p_sys->p_decoder->fmt_out );
 419         if( p_sys->i_chroma )
 420             fmt.video.i_chroma = p_sys->i_chroma;
 421         filter_chain_Reset( p_sys->p_vf2, &fmt, &fmt );
 422         filter_chain_AppendFromString( p_sys->p_vf2, psz_chain );
 423         free( psz_chain );
 424     }
 425     else
 426     {
 427         p_sys->p_vf2 = NULL;
 428     }
 429
 430     return (sout_stream_id_t *)p_sys;
 431 }
 432
 433 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
 434 {
 435     VLC_UNUSED(id);
 436     sout_stream_sys_t *p_sys = p_stream->p_sys;
 437     bridge_t *p_bridge;
 438     bridged_es_t *p_es;
 439     bool b_last_es = true;
 440     int i;
 441
 442     if( !p_sys->b_inited )
 443         return VLC_SUCCESS;
 444
 445     if( p_sys->p_decoder != NULL )
 446     {
 447         decoder_owner_sys_t *p_owner = p_sys->p_decoder->p_owner;
 448
 449         if( p_sys->p_decoder->p_module )
 450             module_unneed( p_sys->p_decoder, p_sys->p_decoder->p_module );
 451         if( p_sys->p_decoder->p_description )
 452             vlc_meta_Delete( p_sys->p_decoder->p_description );
 453
 454         vlc_object_detach( p_sys->p_decoder );
 455         vlc_object_release( p_sys->p_decoder );
 456
 457         free( p_owner );
 458     }
 459
 460     /* Destroy user specified video filters */
 461     if( p_sys->p_vf2 )
 462         filter_chain_Delete( p_sys->p_vf2 );
 463
 464     vlc_mutex_lock( p_sys->p_lock );
 465
 466     p_bridge = GetBridge( p_stream );
 467     p_es = p_sys->p_es;
 468
 469     p_es->b_empty = true;
 470     while ( p_es->p_picture )
 471     {
 472         picture_t *p_next = p_es->p_picture->p_next;
 473         picture_Release( p_es->p_picture );
 474         p_es->p_picture = p_next;
 475     }
 476
 477     for ( i = 0; i < p_bridge->i_es_num; i++ )
 478     {
 479         if ( !p_bridge->pp_es[i]->b_empty )
 480         {
 481             b_last_es = false;
 482             break;
 483         }
 484     }
 485
 486     if ( b_last_es )
 487     {
 488         vlc_object_t *p_libvlc = VLC_OBJECT( p_stream->p_libvlc );
 489         for ( i = 0; i < p_bridge->i_es_num; i++ )
 490             free( p_bridge->pp_es[i] );
 491         free( p_bridge->pp_es );
 492         free( p_bridge );
 493         var_Destroy( p_libvlc, "mosaic-struct" );
 494     }
 495
 496     vlc_mutex_unlock( p_sys->p_lock );
 497
 498     if ( p_sys->p_image )
 499     {
 500         image_HandlerDelete( p_sys->p_image );
 501     }
 502
 503     p_sys->b_inited = false;
 504
 505     return VLC_SUCCESS;
 506 }
 507
 508 /*****************************************************************************
 509  * PushPicture : push a picture in the mosaic-struct structure
 510  *****************************************************************************/
 511 static void PushPicture( sout_stream_t *p_stream, picture_t *p_picture )
 512 {
 513     sout_stream_sys_t *p_sys = p_stream->p_sys;
 514     bridged_es_t *p_es = p_sys->p_es;
 515
 516     vlc_mutex_lock( p_sys->p_lock );
 517
 518     *p_es->pp_last = p_picture;
 519     p_picture->p_next = NULL;
 520     p_es->pp_last = &p_picture->p_next;
 521
 522     vlc_mutex_unlock( p_sys->p_lock );
 523 }
 524
 525 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
 526                  block_t *p_buffer )
 527 {
 528     sout_stream_sys_t *p_sys = p_stream->p_sys;
 529     picture_t *p_pic;
 530
 531     if ( (sout_stream_sys_t *)id != p_sys )
 532     {
 533         block_ChainRelease( p_buffer );
 534         return VLC_SUCCESS;
 535     }
 536
 537     while ( (p_pic = p_sys->p_decoder->pf_decode_video( p_sys->p_decoder,
 538                                                         &p_buffer )) )
 539     {
 540         picture_t *p_new_pic;
 541
 542         if( p_sys->i_height || p_sys->i_width )
 543         {
 544             video_format_t fmt_out, fmt_in;
 545
 546             memset( &fmt_in, 0, sizeof(video_format_t) );
 547             memset( &fmt_out, 0, sizeof(video_format_t) );
 548             fmt_in = p_sys->p_decoder->fmt_out.video;
 549
 550
 551             if( p_sys->i_chroma )
 552                 fmt_out.i_chroma = p_sys->i_chroma;
 553             else
 554                 fmt_out.i_chroma = VLC_CODEC_I420;
 555
 556             const unsigned i_fmt_in_aspect =
 557                 (int64_t)VOUT_ASPECT_FACTOR *
 558                 fmt_in.i_sar_num * fmt_in.i_width /
 559                 (fmt_in.i_sar_den * fmt_in.i_height);
 560             if ( !p_sys->i_height )
 561             {
 562                 fmt_out.i_width = p_sys->i_width;
 563                 fmt_out.i_height = (p_sys->i_width * VOUT_ASPECT_FACTOR
 564                     * p_sys->i_sar_num / p_sys->i_sar_den / i_fmt_in_aspect)
 565                       & ~0x1;
 566             }
 567             else if ( !p_sys->i_width )
 568             {
 569                 fmt_out.i_height = p_sys->i_height;
 570                 fmt_out.i_width = (p_sys->i_height * i_fmt_in_aspect
 571                     * p_sys->i_sar_den / p_sys->i_sar_num / VOUT_ASPECT_FACTOR)
 572                       & ~0x1;
 573             }
 574             else
 575             {
 576                 fmt_out.i_width = p_sys->i_width;
 577                 fmt_out.i_height = p_sys->i_height;
 578             }
 579             fmt_out.i_visible_width = fmt_out.i_width;
 580             fmt_out.i_visible_height = fmt_out.i_height;
 581
 582             p_new_pic = image_Convert( p_sys->p_image,
 583                                        p_pic, &fmt_in, &fmt_out );
 584             if( p_new_pic == NULL )
 585             {
 586                 msg_Err( p_stream, "image conversion failed" );
 587                 picture_Release( p_pic );
 588                 continue;
 589             }
 590         }
 591         else
 592         {
 593             /* TODO: chroma conversion if needed */
 594
 595             p_new_pic = picture_New( p_pic->format.i_chroma,
 596                                      p_pic->format.i_width, p_pic->format.i_height,
 597                                      p_sys->p_decoder->fmt_out.video.i_sar_num,
 598                                      p_sys->p_decoder->fmt_out.video.i_sar_den );
 599             if( !p_new_pic )
 600             {
 601                 picture_Release( p_pic );
 602                 msg_Err( p_stream, "image allocation failed" );
 603                 continue;
 604             }
 605
 606             picture_Copy( p_new_pic, p_pic );
 607         }
 608         picture_Release( p_pic );
 609
 610         if( p_sys->p_vf2 )
 611             p_new_pic = filter_chain_VideoFilter( p_sys->p_vf2, p_new_pic );
 612
 613         PushPicture( p_stream, p_new_pic );
 614     }
 615
 616     return VLC_SUCCESS;
 617 }
 618
 619 inline static picture_t *video_new_buffer_decoder( decoder_t *p_dec )
 620 {
 621     return video_new_buffer( VLC_OBJECT( p_dec ),
 622                              (decoder_owner_sys_t *)p_dec->p_owner,
 623                              &p_dec->fmt_out );
 624 }
 625
 626 inline static picture_t *video_new_buffer_filter( filter_t *p_filter )
 627 {
 628     return video_new_buffer( VLC_OBJECT( p_filter ),
 629                              (decoder_owner_sys_t *)p_filter->p_owner,
 630                              &p_filter->fmt_out );
 631 }
 632
 633 static picture_t *video_new_buffer( vlc_object_t *p_this,
 634                                     decoder_owner_sys_t *p_sys,
 635                                     es_format_t *fmt_out )
 636 {
 637     VLC_UNUSED(p_this);
 638     if( fmt_out->video.i_width != p_sys->video.i_width ||
 639         fmt_out->video.i_height != p_sys->video.i_height ||
 640         fmt_out->video.i_chroma != p_sys->video.i_chroma ||
 641         (int64_t)fmt_out->video.i_sar_num * p_sys->video.i_sar_den !=
 642         (int64_t)fmt_out->video.i_sar_den * p_sys->video.i_sar_num )
 643     {
 644         vlc_ureduce( &fmt_out->video.i_sar_num,
 645                      &fmt_out->video.i_sar_den,
 646                      fmt_out->video.i_sar_num,
 647                      fmt_out->video.i_sar_den, 0 );
 648
 649         if( !fmt_out->video.i_visible_width ||
 650             !fmt_out->video.i_visible_height )
 651         {
 652             fmt_out->video.i_visible_width = fmt_out->video.i_width;
 653             fmt_out->video.i_visible_height = fmt_out->video.i_height;
 654         }
 655
 656         fmt_out->video.i_chroma = fmt_out->i_codec;
 657         p_sys->video = fmt_out->video;
 658     }
 659
 660     /* */
 661     fmt_out->video.i_chroma = fmt_out->i_codec;
 662
 663     return picture_NewFromFormat( &fmt_out->video );
 664 }
 665
 666 inline static void video_del_buffer_decoder( decoder_t *p_this,
 667                                              picture_t *p_pic )
 668 {
 669     VLC_UNUSED(p_this);
 670     picture_Release( p_pic );
 671 }
 672
 673 inline static void video_del_buffer_filter( filter_t *p_this,
 674                                             picture_t *p_pic )
 675 {
 676     VLC_UNUSED(p_this);
 677     picture_Release( p_pic );
 678 }
 679
 680 static void video_link_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
 681 {
 682     VLC_UNUSED(p_dec);
 683     picture_Hold( p_pic );
 684 }
 685
 686 static void video_unlink_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
 687 {
 688     VLC_UNUSED(p_dec);
 689     picture_Release( p_pic );
 690 }
 691
 692
 693 /**********************************************************************
 694  * Callback to update (some) params on the fly
 695  **********************************************************************/
 696 static int HeightCallback( vlc_object_t *p_this, char const *psz_var,
 697                            vlc_value_t oldval, vlc_value_t newval,
 698                            void *p_data )
 699 {
 700     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 701     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 702     sout_stream_sys_t *p_sys = p_stream->p_sys;
 703
 704     /* We create the handler before updating the value in p_sys
 705      * so we don't have to worry about locking */
 706     if( !p_sys->p_image && newval.i_int )
 707         p_sys->p_image = image_HandlerCreate( p_stream );
 708     p_sys->i_height = newval.i_int;
 709
 710     return VLC_SUCCESS;
 711 }
 712
 713 static int WidthCallback( vlc_object_t *p_this, char const *psz_var,
 714                            vlc_value_t oldval, vlc_value_t newval,
 715                            void *p_data )
 716 {
 717     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 718     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 719     sout_stream_sys_t *p_sys = p_stream->p_sys;
 720
 721     /* We create the handler before updating the value in p_sys
 722      * so we don't have to worry about locking */
 723     if( !p_sys->p_image && newval.i_int )
 724         p_sys->p_image = image_HandlerCreate( p_stream );
 725     p_sys->i_width = newval.i_int;
 726
 727     return VLC_SUCCESS;
 728 }
 729
 730 static int alphaCallback( vlc_object_t *p_this, char const *psz_var,
 731                           vlc_value_t oldval, vlc_value_t newval,
 732                           void *p_data )
 733 {
 734     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 735     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 736     sout_stream_sys_t *p_sys = p_stream->p_sys;
 737
 738     if( p_sys->p_es )
 739         p_sys->p_es->i_alpha = newval.i_int;
 740
 741     return VLC_SUCCESS;
 742 }
 743
 744 static int xCallback( vlc_object_t *p_this, char const *psz_var,
 745                       vlc_value_t oldval, vlc_value_t newval,
 746                       void *p_data )
 747 {
 748     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 749     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 750     sout_stream_sys_t *p_sys = p_stream->p_sys;
 751
 752     if( p_sys->p_es )
 753         p_sys->p_es->i_x = newval.i_int;
 754
 755     return VLC_SUCCESS;
 756 }
 757
 758 static int yCallback( vlc_object_t *p_this, char const *psz_var,
 759                       vlc_value_t oldval, vlc_value_t newval,
 760                       void *p_data )
 761 {
 762     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 763     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 764     sout_stream_sys_t *p_sys = p_stream->p_sys;
 765
 766     if( p_sys->p_es )
 767         p_sys->p_es->i_y = newval.i_int;
 768
 769     return VLC_SUCCESS;
 770 }