git.sesse.net Git - vlc/blob - modules/stream_out/mosaic_bridge.c

   1 /*****************************************************************************
   2  * mosaic_bridge.c:
   3  *****************************************************************************
   4  * Copyright (C) 2004-2007 VLC authors and VideoLAN
   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 it
  11  * under the terms of the GNU Lesser General Public License as published by
  12  * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public License
  21  * along with this program; if not, write to the Free Software Foundation,
  22  * 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
  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_sys_t *Add ( sout_stream_t *, es_format_t * );
  77 static int               Del ( sout_stream_t *, sout_stream_id_sys_t * );
  78 static int               Send( sout_stream_t *, sout_stream_id_sys_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", ID_TEXT, ID_LONGTEXT,
 149                 false )
 150     add_integer( CFG_PREFIX "width", 0, WIDTH_TEXT,
 151                  WIDTH_LONGTEXT, true )
 152     add_integer( CFG_PREFIX "height", 0, HEIGHT_TEXT,
 153                  HEIGHT_LONGTEXT, true )
 154     add_string( CFG_PREFIX "sar", "1:1", RATIO_TEXT,
 155                 RATIO_LONGTEXT, false )
 156     add_string( CFG_PREFIX "chroma", NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
 157                 false )
 158
 159     add_module_list( CFG_PREFIX "vfilter", "video filter2",
 160                      NULL, VFILTER_TEXT, VFILTER_LONGTEXT, false )
 161
 162     add_integer_with_range( CFG_PREFIX "alpha", 255, 0, 255,
 163                             ALPHA_TEXT, ALPHA_LONGTEXT, false )
 164     add_integer( CFG_PREFIX "x", -1, X_TEXT, X_LONGTEXT, false )
 165     add_integer( CFG_PREFIX "y", -1, 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_value_t           val;
 182
 183     config_ChainParse( p_stream, CFG_PREFIX, ppsz_sout_options,
 184                        p_stream->p_cfg );
 185
 186     p_sys = malloc( sizeof( sout_stream_sys_t ) );
 187     if( !p_sys )
 188         return VLC_ENOMEM;
 189
 190     p_stream->p_sys = p_sys;
 191     p_sys->b_inited = false;
 192
 193     p_sys->psz_id = var_CreateGetString( p_stream, CFG_PREFIX "id" );
 194
 195     p_sys->i_height =
 196         var_CreateGetIntegerCommand( p_stream, CFG_PREFIX "height" );
 197     var_AddCallback( p_stream, CFG_PREFIX "height", HeightCallback, p_stream );
 198
 199     p_sys->i_width =
 200         var_CreateGetIntegerCommand( p_stream, CFG_PREFIX "width" );
 201     var_AddCallback( p_stream, CFG_PREFIX "width", WidthCallback, p_stream );
 202
 203     var_Get( p_stream, CFG_PREFIX "sar", &val );
 204     if( val.psz_string )
 205     {
 206         char *psz_parser = strchr( val.psz_string, ':' );
 207
 208         if( psz_parser )
 209         {
 210             *psz_parser++ = '\0';
 211             p_sys->i_sar_num = atoi( val.psz_string );
 212             p_sys->i_sar_den = atoi( psz_parser );
 213             vlc_ureduce( &p_sys->i_sar_num, &p_sys->i_sar_den,
 214                          p_sys->i_sar_num, p_sys->i_sar_den, 0 );
 215         }
 216         else
 217         {
 218             msg_Warn( p_stream, "bad aspect ratio %s", val.psz_string );
 219             p_sys->i_sar_num = p_sys->i_sar_den = 1;
 220         }
 221
 222         free( val.psz_string );
 223     }
 224     else
 225     {
 226         p_sys->i_sar_num = p_sys->i_sar_den = 1;
 227     }
 228
 229     p_sys->i_chroma = 0;
 230     val.psz_string = var_GetNonEmptyString( p_stream, CFG_PREFIX "chroma" );
 231     if( val.psz_string && strlen( val.psz_string ) >= 4 )
 232     {
 233         memcpy( &p_sys->i_chroma, val.psz_string, 4 );
 234         msg_Dbg( p_stream, "Forcing image chroma to 0x%.8x (%4.4s)", p_sys->i_chroma, (char*)&p_sys->i_chroma );
 235     }
 236     free( val.psz_string );
 237
 238 #define INT_COMMAND( a ) do { \
 239     var_Create( p_stream, CFG_PREFIX #a, \
 240                 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT | VLC_VAR_ISCOMMAND ); \
 241     var_AddCallback( p_stream, CFG_PREFIX #a, a ## Callback, \
 242                      p_stream ); } while(0)
 243     INT_COMMAND( alpha );
 244     INT_COMMAND( x );
 245     INT_COMMAND( y );
 246
 247 #undef INT_COMMAND
 248
 249     p_stream->pf_add    = Add;
 250     p_stream->pf_del    = Del;
 251     p_stream->pf_send   = Send;
 252     p_stream->pace_nocontrol = true;
 253
 254     return VLC_SUCCESS;
 255 }
 256
 257 /*****************************************************************************
 258  * Close
 259  *****************************************************************************/
 260 static void Close( vlc_object_t * p_this )
 261 {
 262     sout_stream_t     *p_stream = (sout_stream_t*)p_this;
 263     sout_stream_sys_t *p_sys = p_stream->p_sys;
 264
 265     /* Delete the callbacks */
 266     var_DelCallback( p_stream, CFG_PREFIX "height", HeightCallback, p_stream );
 267     var_DelCallback( p_stream, CFG_PREFIX "width", WidthCallback, p_stream );
 268     var_DelCallback( p_stream, CFG_PREFIX "alpha", alphaCallback, p_stream );
 269     var_DelCallback( p_stream, CFG_PREFIX "x", xCallback, p_stream );
 270     var_DelCallback( p_stream, CFG_PREFIX "y", yCallback, p_stream );
 271
 272     free( p_sys->psz_id );
 273
 274     free( p_sys );
 275 }
 276
 277 static sout_stream_id_sys_t * Add( sout_stream_t *p_stream, es_format_t *p_fmt )
 278 {
 279     sout_stream_sys_t *p_sys = p_stream->p_sys;
 280     bridge_t *p_bridge;
 281     bridged_es_t *p_es;
 282     char *psz_chain;
 283     int i;
 284
 285     if( p_sys->b_inited || p_fmt->i_cat != VIDEO_ES )
 286         return NULL;
 287
 288     /* Create decoder object */
 289     p_sys->p_decoder = vlc_object_create( p_stream, sizeof( decoder_t ) );
 290     if( !p_sys->p_decoder )
 291         return NULL;
 292     p_sys->p_decoder->p_module = NULL;
 293     p_sys->p_decoder->fmt_in = *p_fmt;
 294     p_sys->p_decoder->b_pace_control = false;
 295     p_sys->p_decoder->fmt_out = p_sys->p_decoder->fmt_in;
 296     p_sys->p_decoder->fmt_out.i_extra = 0;
 297     p_sys->p_decoder->fmt_out.p_extra = 0;
 298     p_sys->p_decoder->pf_decode_video = 0;
 299     p_sys->p_decoder->pf_vout_buffer_new = video_new_buffer_decoder;
 300     p_sys->p_decoder->pf_vout_buffer_del = video_del_buffer_decoder;
 301     p_sys->p_decoder->pf_picture_link    = video_link_picture_decoder;
 302     p_sys->p_decoder->pf_picture_unlink  = video_unlink_picture_decoder;
 303     p_sys->p_decoder->p_owner = malloc( sizeof(decoder_owner_sys_t) );
 304     if( !p_sys->p_decoder->p_owner )
 305     {
 306         vlc_object_release( p_sys->p_decoder );
 307         return NULL;
 308     }
 309
 310     p_sys->p_decoder->p_owner->video = p_fmt->video;
 311     //p_sys->p_decoder->p_cfg = p_sys->p_video_cfg;
 312
 313     p_sys->p_decoder->p_module =
 314         module_need( p_sys->p_decoder, "decoder", "$codec", false );
 315
 316     if( !p_sys->p_decoder->p_module || !p_sys->p_decoder->pf_decode_video )
 317     {
 318         if( p_sys->p_decoder->p_module )
 319         {
 320             msg_Err( p_stream, "instanciated a non video decoder" );
 321             module_unneed( p_sys->p_decoder, p_sys->p_decoder->p_module );
 322         }
 323         else
 324         {
 325             msg_Err( p_stream, "cannot find decoder" );
 326         }
 327         free( p_sys->p_decoder->p_owner );
 328         vlc_object_release( p_sys->p_decoder );
 329         return NULL;
 330     }
 331
 332     p_sys->b_inited = true;
 333     vlc_global_lock( VLC_MOSAIC_MUTEX );
 334
 335     p_bridge = GetBridge( p_stream );
 336     if ( p_bridge == NULL )
 337     {
 338         vlc_object_t *p_libvlc = VLC_OBJECT( p_stream->p_libvlc );
 339         vlc_value_t val;
 340
 341         p_bridge = xmalloc( sizeof( bridge_t ) );
 342
 343         var_Create( p_libvlc, "mosaic-struct", VLC_VAR_ADDRESS );
 344         val.p_address = p_bridge;
 345         var_Set( p_libvlc, "mosaic-struct", val );
 346
 347         p_bridge->i_es_num = 0;
 348         p_bridge->pp_es = NULL;
 349     }
 350
 351     for ( i = 0; i < p_bridge->i_es_num; i++ )
 352     {
 353         if ( p_bridge->pp_es[i]->b_empty )
 354             break;
 355     }
 356
 357     if ( i == p_bridge->i_es_num )
 358     {
 359         p_bridge->pp_es = xrealloc( p_bridge->pp_es,
 360                           (p_bridge->i_es_num + 1) * sizeof(bridged_es_t *) );
 361         p_bridge->i_es_num++;
 362         p_bridge->pp_es[i] = xmalloc( sizeof(bridged_es_t) );
 363     }
 364
 365     p_sys->p_es = p_es = p_bridge->pp_es[i];
 366
 367     p_es->i_alpha = var_GetInteger( p_stream, CFG_PREFIX "alpha" );
 368     p_es->i_x = var_GetInteger( p_stream, CFG_PREFIX "x" );
 369     p_es->i_y = var_GetInteger( p_stream, CFG_PREFIX "y" );
 370
 371     //p_es->fmt = *p_fmt;
 372     p_es->psz_id = p_sys->psz_id;
 373     p_es->p_picture = NULL;
 374     p_es->pp_last = &p_es->p_picture;
 375     p_es->b_empty = false;
 376
 377     vlc_global_unlock( VLC_MOSAIC_MUTEX );
 378
 379     if ( p_sys->i_height || p_sys->i_width )
 380     {
 381         p_sys->p_image = image_HandlerCreate( p_stream );
 382     }
 383     else
 384     {
 385         p_sys->p_image = NULL;
 386     }
 387
 388     msg_Dbg( p_stream, "mosaic bridge id=%s pos=%d", p_es->psz_id, i );
 389
 390     /* Create user specified video filters */
 391     psz_chain = var_GetNonEmptyString( p_stream, CFG_PREFIX "vfilter" );
 392     msg_Dbg( p_stream, "psz_chain: %s", psz_chain );
 393     if( psz_chain )
 394     {
 395         filter_owner_t owner = {
 396             .sys = p_sys->p_decoder->p_owner,
 397             .video = {
 398                 .buffer_new = video_new_buffer_filter,
 399                 .buffer_del = video_del_buffer_filter,
 400             },
 401         };
 402
 403         p_sys->p_vf2 = filter_chain_NewVideo( p_stream, false, &owner );
 404         es_format_t fmt;
 405         es_format_Copy( &fmt, &p_sys->p_decoder->fmt_out );
 406         if( p_sys->i_chroma )
 407             fmt.video.i_chroma = p_sys->i_chroma;
 408         filter_chain_Reset( p_sys->p_vf2, &fmt, &fmt );
 409         filter_chain_AppendFromString( p_sys->p_vf2, psz_chain );
 410         free( psz_chain );
 411     }
 412     else
 413     {
 414         p_sys->p_vf2 = NULL;
 415     }
 416
 417     return (sout_stream_id_sys_t *)p_sys;
 418 }
 419
 420 static int Del( sout_stream_t *p_stream, sout_stream_id_sys_t *id )
 421 {
 422     VLC_UNUSED(id);
 423     sout_stream_sys_t *p_sys = p_stream->p_sys;
 424     bridge_t *p_bridge;
 425     bridged_es_t *p_es;
 426     bool b_last_es = true;
 427     int i;
 428
 429     if( !p_sys->b_inited )
 430         return VLC_SUCCESS;
 431
 432     if( p_sys->p_decoder != NULL )
 433     {
 434         decoder_owner_sys_t *p_owner = p_sys->p_decoder->p_owner;
 435
 436         if( p_sys->p_decoder->p_module )
 437             module_unneed( p_sys->p_decoder, p_sys->p_decoder->p_module );
 438         if( p_sys->p_decoder->p_description )
 439             vlc_meta_Delete( p_sys->p_decoder->p_description );
 440
 441         vlc_object_release( p_sys->p_decoder );
 442
 443         free( p_owner );
 444     }
 445
 446     /* Destroy user specified video filters */
 447     if( p_sys->p_vf2 )
 448         filter_chain_Delete( p_sys->p_vf2 );
 449
 450     vlc_global_lock( VLC_MOSAIC_MUTEX );
 451
 452     p_bridge = GetBridge( p_stream );
 453     p_es = p_sys->p_es;
 454
 455     p_es->b_empty = true;
 456     while ( p_es->p_picture )
 457     {
 458         picture_t *p_next = p_es->p_picture->p_next;
 459         picture_Release( p_es->p_picture );
 460         p_es->p_picture = p_next;
 461     }
 462
 463     for ( i = 0; i < p_bridge->i_es_num; i++ )
 464     {
 465         if ( !p_bridge->pp_es[i]->b_empty )
 466         {
 467             b_last_es = false;
 468             break;
 469         }
 470     }
 471
 472     if ( b_last_es )
 473     {
 474         vlc_object_t *p_libvlc = VLC_OBJECT( p_stream->p_libvlc );
 475         for ( i = 0; i < p_bridge->i_es_num; i++ )
 476             free( p_bridge->pp_es[i] );
 477         free( p_bridge->pp_es );
 478         free( p_bridge );
 479         var_Destroy( p_libvlc, "mosaic-struct" );
 480     }
 481
 482     vlc_global_unlock( VLC_MOSAIC_MUTEX );
 483
 484     if ( p_sys->p_image )
 485     {
 486         image_HandlerDelete( p_sys->p_image );
 487     }
 488
 489     p_sys->b_inited = false;
 490
 491     return VLC_SUCCESS;
 492 }
 493
 494 /*****************************************************************************
 495  * PushPicture : push a picture in the mosaic-struct structure
 496  *****************************************************************************/
 497 static void PushPicture( sout_stream_t *p_stream, picture_t *p_picture )
 498 {
 499     sout_stream_sys_t *p_sys = p_stream->p_sys;
 500     bridged_es_t *p_es = p_sys->p_es;
 501
 502     vlc_global_lock( VLC_MOSAIC_MUTEX );
 503
 504     *p_es->pp_last = p_picture;
 505     p_picture->p_next = NULL;
 506     p_es->pp_last = &p_picture->p_next;
 507
 508     vlc_global_unlock( VLC_MOSAIC_MUTEX );
 509 }
 510
 511 static int Send( sout_stream_t *p_stream, sout_stream_id_sys_t *id,
 512                  block_t *p_buffer )
 513 {
 514     sout_stream_sys_t *p_sys = p_stream->p_sys;
 515     picture_t *p_pic;
 516
 517     if ( (sout_stream_sys_t *)id != p_sys )
 518     {
 519         block_ChainRelease( p_buffer );
 520         return VLC_SUCCESS;
 521     }
 522
 523     while ( (p_pic = p_sys->p_decoder->pf_decode_video( p_sys->p_decoder,
 524                                                         &p_buffer )) )
 525     {
 526         picture_t *p_new_pic;
 527
 528         if( p_sys->i_height || p_sys->i_width )
 529         {
 530             video_format_t fmt_out, fmt_in;
 531
 532             memset( &fmt_in, 0, sizeof(video_format_t) );
 533             memset( &fmt_out, 0, sizeof(video_format_t) );
 534             fmt_in = p_sys->p_decoder->fmt_out.video;
 535
 536
 537             if( p_sys->i_chroma )
 538                 fmt_out.i_chroma = p_sys->i_chroma;
 539             else
 540                 fmt_out.i_chroma = VLC_CODEC_I420;
 541
 542             const unsigned i_fmt_in_aspect =
 543                 (int64_t)VOUT_ASPECT_FACTOR *
 544                 fmt_in.i_sar_num * fmt_in.i_width /
 545                 (fmt_in.i_sar_den * fmt_in.i_height);
 546             if ( !p_sys->i_height )
 547             {
 548                 fmt_out.i_width = p_sys->i_width;
 549                 fmt_out.i_height = (p_sys->i_width * VOUT_ASPECT_FACTOR
 550                     * p_sys->i_sar_num / p_sys->i_sar_den / i_fmt_in_aspect)
 551                       & ~0x1;
 552             }
 553             else if ( !p_sys->i_width )
 554             {
 555                 fmt_out.i_height = p_sys->i_height;
 556                 fmt_out.i_width = (p_sys->i_height * i_fmt_in_aspect
 557                     * p_sys->i_sar_den / p_sys->i_sar_num / VOUT_ASPECT_FACTOR)
 558                       & ~0x1;
 559             }
 560             else
 561             {
 562                 fmt_out.i_width = p_sys->i_width;
 563                 fmt_out.i_height = p_sys->i_height;
 564             }
 565             fmt_out.i_visible_width = fmt_out.i_width;
 566             fmt_out.i_visible_height = fmt_out.i_height;
 567
 568             p_new_pic = image_Convert( p_sys->p_image,
 569                                        p_pic, &fmt_in, &fmt_out );
 570             if( p_new_pic == NULL )
 571             {
 572                 msg_Err( p_stream, "image conversion failed" );
 573                 picture_Release( p_pic );
 574                 continue;
 575             }
 576         }
 577         else
 578         {
 579             /* TODO: chroma conversion if needed */
 580
 581             p_new_pic = picture_New( p_pic->format.i_chroma,
 582                                      p_pic->format.i_width, p_pic->format.i_height,
 583                                      p_sys->p_decoder->fmt_out.video.i_sar_num,
 584                                      p_sys->p_decoder->fmt_out.video.i_sar_den );
 585             if( !p_new_pic )
 586             {
 587                 picture_Release( p_pic );
 588                 msg_Err( p_stream, "image allocation failed" );
 589                 continue;
 590             }
 591
 592             picture_Copy( p_new_pic, p_pic );
 593         }
 594         picture_Release( p_pic );
 595
 596         if( p_sys->p_vf2 )
 597             p_new_pic = filter_chain_VideoFilter( p_sys->p_vf2, p_new_pic );
 598
 599         PushPicture( p_stream, p_new_pic );
 600     }
 601
 602     return VLC_SUCCESS;
 603 }
 604
 605 inline static picture_t *video_new_buffer_decoder( decoder_t *p_dec )
 606 {
 607     return video_new_buffer( VLC_OBJECT( p_dec ),
 608                              (decoder_owner_sys_t *)p_dec->p_owner,
 609                              &p_dec->fmt_out );
 610 }
 611
 612 inline static picture_t *video_new_buffer_filter( filter_t *p_filter )
 613 {
 614     return video_new_buffer( VLC_OBJECT( p_filter ),
 615                              (decoder_owner_sys_t *)p_filter->owner.sys,
 616                              &p_filter->fmt_out );
 617 }
 618
 619 static picture_t *video_new_buffer( vlc_object_t *p_this,
 620                                     decoder_owner_sys_t *p_sys,
 621                                     es_format_t *fmt_out )
 622 {
 623     VLC_UNUSED(p_this);
 624     if( fmt_out->video.i_width != p_sys->video.i_width ||
 625         fmt_out->video.i_height != p_sys->video.i_height ||
 626         fmt_out->video.i_chroma != p_sys->video.i_chroma ||
 627         (int64_t)fmt_out->video.i_sar_num * p_sys->video.i_sar_den !=
 628         (int64_t)fmt_out->video.i_sar_den * p_sys->video.i_sar_num )
 629     {
 630         vlc_ureduce( &fmt_out->video.i_sar_num,
 631                      &fmt_out->video.i_sar_den,
 632                      fmt_out->video.i_sar_num,
 633                      fmt_out->video.i_sar_den, 0 );
 634
 635         if( !fmt_out->video.i_visible_width ||
 636             !fmt_out->video.i_visible_height )
 637         {
 638             fmt_out->video.i_visible_width = fmt_out->video.i_width;
 639             fmt_out->video.i_visible_height = fmt_out->video.i_height;
 640         }
 641
 642         fmt_out->video.i_chroma = fmt_out->i_codec;
 643         p_sys->video = fmt_out->video;
 644     }
 645
 646     /* */
 647     fmt_out->video.i_chroma = fmt_out->i_codec;
 648
 649     return picture_NewFromFormat( &fmt_out->video );
 650 }
 651
 652 inline static void video_del_buffer_decoder( decoder_t *p_this,
 653                                              picture_t *p_pic )
 654 {
 655     VLC_UNUSED(p_this);
 656     picture_Release( p_pic );
 657 }
 658
 659 inline static void video_del_buffer_filter( filter_t *p_this,
 660                                             picture_t *p_pic )
 661 {
 662     VLC_UNUSED(p_this);
 663     picture_Release( p_pic );
 664 }
 665
 666 static void video_link_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
 667 {
 668     VLC_UNUSED(p_dec);
 669     picture_Hold( p_pic );
 670 }
 671
 672 static void video_unlink_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
 673 {
 674     VLC_UNUSED(p_dec);
 675     picture_Release( p_pic );
 676 }
 677
 678
 679 /**********************************************************************
 680  * Callback to update (some) params on the fly
 681  **********************************************************************/
 682 static int HeightCallback( vlc_object_t *p_this, char const *psz_var,
 683                            vlc_value_t oldval, vlc_value_t newval,
 684                            void *p_data )
 685 {
 686     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 687     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 688     sout_stream_sys_t *p_sys = p_stream->p_sys;
 689
 690     /* We create the handler before updating the value in p_sys
 691      * so we don't have to worry about locking */
 692     if( !p_sys->p_image && newval.i_int )
 693         p_sys->p_image = image_HandlerCreate( p_stream );
 694     p_sys->i_height = newval.i_int;
 695
 696     return VLC_SUCCESS;
 697 }
 698
 699 static int WidthCallback( vlc_object_t *p_this, char const *psz_var,
 700                            vlc_value_t oldval, vlc_value_t newval,
 701                            void *p_data )
 702 {
 703     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 704     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 705     sout_stream_sys_t *p_sys = p_stream->p_sys;
 706
 707     /* We create the handler before updating the value in p_sys
 708      * so we don't have to worry about locking */
 709     if( !p_sys->p_image && newval.i_int )
 710         p_sys->p_image = image_HandlerCreate( p_stream );
 711     p_sys->i_width = newval.i_int;
 712
 713     return VLC_SUCCESS;
 714 }
 715
 716 static int alphaCallback( vlc_object_t *p_this, char const *psz_var,
 717                           vlc_value_t oldval, vlc_value_t newval,
 718                           void *p_data )
 719 {
 720     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 721     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 722     sout_stream_sys_t *p_sys = p_stream->p_sys;
 723
 724     if( p_sys->p_es )
 725         p_sys->p_es->i_alpha = newval.i_int;
 726
 727     return VLC_SUCCESS;
 728 }
 729
 730 static int xCallback( 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_x = newval.i_int;
 740
 741     return VLC_SUCCESS;
 742 }
 743
 744 static int yCallback( 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_y = newval.i_int;
 754
 755     return VLC_SUCCESS;
 756 }