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

   1 /*****************************************************************************
   2  * mosaic_bridge.c:
   3  *****************************************************************************
   4  * Copyright (C) 2004-2007 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Antoine Cellerier <dionoea@videolan.org>
   8  *          Christophe Massiot <massiot@via.ecp.fr>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32
  33 #include <errno.h>                                                 /* ENOMEM */
  34
  35 #include <vlc_common.h>
  36 #include <vlc_plugin.h>
  37 #include <vlc_sout.h>
  38 #include <vlc_block.h>
  39 #include <vlc_codec.h>
  40
  41 #include <vlc_image.h>
  42 #include <vlc_filter.h>
  43
  44 #include "../video_filter/mosaic.h"
  45
  46 #include <assert.h>
  47
  48 /*****************************************************************************
  49  * Local structures
  50  *****************************************************************************/
  51 struct sout_stream_sys_t
  52 {
  53     bridged_es_t *p_es;
  54     vlc_mutex_t *p_lock;
  55
  56     decoder_t       *p_decoder;
  57     image_handler_t *p_image; /* filter for resizing */
  58     int i_height, i_width;
  59     unsigned int i_sar_num, i_sar_den;
  60     char *psz_id;
  61     bool b_inited;
  62
  63     int i_chroma; /* force image format chroma */
  64
  65     filter_chain_t *p_vf2;
  66 };
  67
  68 #define PICTURE_RING_SIZE 4
  69 struct decoder_owner_sys_t
  70 {
  71     picture_t *pp_pics[PICTURE_RING_SIZE];
  72
  73     /* Current format in use by the output */
  74     video_format_t video;
  75 };
  76
  77 typedef void (* pf_release_t)( picture_t * );
  78 static void ReleasePicture( picture_t *p_pic )
  79 {
  80     assert( p_pic );
  81
  82     if( --p_pic->i_refcount > 0 )
  83         return;
  84
  85     if( p_pic->p_sys )
  86     {
  87         pf_release_t pf_release = (pf_release_t)p_pic->p_sys;
  88         p_pic->p_sys = NULL;
  89         pf_release( p_pic );
  90     }
  91     else
  92     {
  93         free( p_pic->p_data_orig );
  94         free( p_pic );
  95     }
  96 }
  97
  98 /*****************************************************************************
  99  * Local prototypes
 100  *****************************************************************************/
 101 static int  Open    ( vlc_object_t * );
 102 static void Close   ( vlc_object_t * );
 103 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
 104 static int               Del ( sout_stream_t *, sout_stream_id_t * );
 105 static int               Send( sout_stream_t *, sout_stream_id_t *, block_t * );
 106
 107 inline static void video_del_buffer_decoder( decoder_t *, picture_t * );
 108 inline static void video_del_buffer_filter( filter_t *, picture_t * );
 109 static void video_del_buffer( picture_t * );
 110
 111 inline static picture_t *video_new_buffer_decoder( decoder_t * );
 112 inline static picture_t *video_new_buffer_filter( filter_t * );
 113 static picture_t *video_new_buffer( vlc_object_t *, decoder_owner_sys_t *,
 114                                     es_format_t *, void (*)( picture_t * ) );
 115
 116 static void video_link_picture_decoder( decoder_t *, picture_t * );
 117 static void video_unlink_picture_decoder( decoder_t *, picture_t * );
 118
 119 static int HeightCallback( vlc_object_t *, char const *,
 120                            vlc_value_t, vlc_value_t, void * );
 121 static int WidthCallback( vlc_object_t *, char const *,
 122                           vlc_value_t, vlc_value_t, void * );
 123 static int alphaCallback( vlc_object_t *, char const *,
 124                           vlc_value_t, vlc_value_t, void * );
 125 static int xCallback( vlc_object_t *, char const *,
 126                       vlc_value_t, vlc_value_t, void * );
 127 static int yCallback( vlc_object_t *, char const *,
 128                       vlc_value_t, vlc_value_t, void * );
 129
 130 /*****************************************************************************
 131  * Module descriptor
 132  *****************************************************************************/
 133 #define ID_TEXT N_("ID")
 134 #define ID_LONGTEXT N_( \
 135     "Specify an identifier string for this subpicture" )
 136
 137 #define WIDTH_TEXT N_("Video width")
 138 #define WIDTH_LONGTEXT N_( \
 139     "Output video width." )
 140 #define HEIGHT_TEXT N_("Video height")
 141 #define HEIGHT_LONGTEXT N_( \
 142     "Output video height." )
 143 #define RATIO_TEXT N_("Sample aspect ratio")
 144 #define RATIO_LONGTEXT N_( \
 145     "Sample aspect ratio of the destination (1:1, 3:4, 2:3)." )
 146
 147 #define VFILTER_TEXT N_("Video filter")
 148 #define VFILTER_LONGTEXT N_( \
 149     "Video filters will be applied to the video stream." )
 150
 151 #define CHROMA_TEXT N_("Image chroma")
 152 #define CHROMA_LONGTEXT N_( \
 153     "Force the use of a specific chroma. Use YUVA if you're planning " \
 154     "to use the Alphamask or Bluescreen video filter." )
 155
 156 #define ALPHA_TEXT N_("Transparency")
 157 #define ALPHA_LONGTEXT N_( \
 158     "Transparency of the mosaic picture." )
 159
 160 #define X_TEXT N_("X offset")
 161 #define X_LONGTEXT N_( \
 162     "X coordinate of the upper left corner in the mosaic if non negative." )
 163
 164 #define Y_TEXT N_("Y offset")
 165 #define Y_LONGTEXT N_( \
 166     "Y coordinate of the upper left corner in the mosaic if non negative." )
 167
 168 #define CFG_PREFIX "sout-mosaic-bridge-"
 169
 170 vlc_module_begin();
 171     set_shortname( N_( "Mosaic bridge" ) );
 172     set_description(N_("Mosaic bridge stream output") );
 173     set_capability( "sout stream", 0 );
 174     add_shortcut( "mosaic-bridge" );
 175
 176     add_string( CFG_PREFIX "id", "Id", NULL, ID_TEXT, ID_LONGTEXT,
 177                 false );
 178     add_integer( CFG_PREFIX "width", 0, NULL, WIDTH_TEXT,
 179                  WIDTH_LONGTEXT, true );
 180     add_integer( CFG_PREFIX "height", 0, NULL, HEIGHT_TEXT,
 181                  HEIGHT_LONGTEXT, true );
 182     add_string( CFG_PREFIX "sar", "1:1", NULL, RATIO_TEXT,
 183                 RATIO_LONGTEXT, false );
 184     add_string( CFG_PREFIX "chroma", 0, NULL, CHROMA_TEXT, CHROMA_LONGTEXT,
 185                 false );
 186
 187     add_module_list( CFG_PREFIX "vfilter", "video filter2",
 188                      NULL, NULL, VFILTER_TEXT, VFILTER_LONGTEXT, false );
 189
 190     add_integer_with_range( CFG_PREFIX "alpha", 255, 0, 255, NULL,
 191                             ALPHA_TEXT, ALPHA_LONGTEXT, false );
 192     add_integer( CFG_PREFIX "x", -1, NULL, X_TEXT, X_LONGTEXT, false );
 193     add_integer( CFG_PREFIX "y", -1, NULL, Y_TEXT, Y_LONGTEXT, false );
 194
 195     set_callbacks( Open, Close );
 196 vlc_module_end();
 197
 198 static const char *const ppsz_sout_options[] = {
 199     "id", "width", "height", "sar", "vfilter", "chroma", "alpha", "x", "y", NULL
 200 };
 201
 202 /*****************************************************************************
 203  * Open
 204  *****************************************************************************/
 205 static int Open( vlc_object_t *p_this )
 206 {
 207     sout_stream_t        *p_stream = (sout_stream_t *)p_this;
 208     sout_stream_sys_t    *p_sys;
 209     vlc_object_t         *p_libvlc = VLC_OBJECT( p_this->p_libvlc );
 210     vlc_value_t           val;
 211
 212     config_ChainParse( p_stream, CFG_PREFIX, ppsz_sout_options,
 213                        p_stream->p_cfg );
 214
 215     p_sys = malloc( sizeof( sout_stream_sys_t ) );
 216     if( !p_sys )
 217         return VLC_ENOMEM;
 218
 219     p_stream->p_sys = p_sys;
 220     p_sys->b_inited = false;
 221
 222     var_Create( p_libvlc, "mosaic-lock", VLC_VAR_MUTEX );
 223     var_Get( p_libvlc, "mosaic-lock", &val );
 224     p_sys->p_lock = val.p_address;
 225
 226     p_sys->psz_id = var_CreateGetString( p_stream, CFG_PREFIX "id" );
 227
 228     p_sys->i_height =
 229         var_CreateGetIntegerCommand( p_stream, CFG_PREFIX "height" );
 230     var_AddCallback( p_stream, CFG_PREFIX "height", HeightCallback, p_stream );
 231
 232     p_sys->i_width =
 233         var_CreateGetIntegerCommand( p_stream, CFG_PREFIX "width" );
 234     var_AddCallback( p_stream, CFG_PREFIX "width", WidthCallback, p_stream );
 235
 236     var_Get( p_stream, CFG_PREFIX "sar", &val );
 237     if( val.psz_string )
 238     {
 239         char *psz_parser = strchr( val.psz_string, ':' );
 240
 241         if( psz_parser )
 242         {
 243             *psz_parser++ = '\0';
 244             p_sys->i_sar_num = atoi( val.psz_string );
 245             p_sys->i_sar_den = atoi( psz_parser );
 246             vlc_ureduce( &p_sys->i_sar_num, &p_sys->i_sar_den,
 247                          p_sys->i_sar_num, p_sys->i_sar_den, 0 );
 248         }
 249         else
 250         {
 251             msg_Warn( p_stream, "bad aspect ratio %s", val.psz_string );
 252             p_sys->i_sar_num = p_sys->i_sar_den = 1;
 253         }
 254
 255         free( val.psz_string );
 256     }
 257     else
 258     {
 259         p_sys->i_sar_num = p_sys->i_sar_den = 1;
 260     }
 261
 262     p_sys->i_chroma = 0;
 263     val.psz_string = var_GetNonEmptyString( p_stream, CFG_PREFIX "chroma" );
 264     if( val.psz_string && strlen( val.psz_string ) >= 4 )
 265     {
 266         memcpy( &p_sys->i_chroma, val.psz_string, 4 );
 267         msg_Dbg( p_stream, "Forcing image chroma to 0x%.8x (%4.4s)", p_sys->i_chroma, (char*)&p_sys->i_chroma );
 268     }
 269
 270 #define INT_COMMAND( a ) do { \
 271     var_Create( p_stream, CFG_PREFIX #a, \
 272                 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT | VLC_VAR_ISCOMMAND ); \
 273     var_AddCallback( p_stream, CFG_PREFIX #a, a ## Callback, \
 274                      p_stream ); } while(0)
 275     INT_COMMAND( alpha );
 276     INT_COMMAND( x );
 277     INT_COMMAND( y );
 278
 279 #undef INT_COMMAND
 280
 281     p_stream->pf_add    = Add;
 282     p_stream->pf_del    = Del;
 283     p_stream->pf_send   = Send;
 284
 285     p_stream->p_sout->i_out_pace_nocontrol++;
 286
 287     return VLC_SUCCESS;
 288 }
 289
 290 /*****************************************************************************
 291  * Close
 292  *****************************************************************************/
 293 static void Close( vlc_object_t * p_this )
 294 {
 295     sout_stream_t     *p_stream = (sout_stream_t*)p_this;
 296     sout_stream_sys_t *p_sys = p_stream->p_sys;
 297
 298     p_stream->p_sout->i_out_pace_nocontrol--;
 299
 300     free( p_sys->psz_id );
 301
 302     free( p_sys );
 303 }
 304
 305 static int video_filter_buffer_allocation_init( filter_t *p_filter, void *p_data )
 306 {
 307     p_filter->pf_vout_buffer_new = video_new_buffer_filter;
 308     p_filter->pf_vout_buffer_del = video_del_buffer_filter;
 309     p_filter->p_owner = p_data;
 310     return VLC_SUCCESS;
 311 }
 312
 313 static sout_stream_id_t * Add( sout_stream_t *p_stream, es_format_t *p_fmt )
 314 {
 315     sout_stream_sys_t *p_sys = p_stream->p_sys;
 316     bridge_t *p_bridge;
 317     bridged_es_t *p_es;
 318     char *psz_chain;
 319     int i;
 320
 321     if( p_sys->b_inited || p_fmt->i_cat != VIDEO_ES )
 322         return NULL;
 323
 324     /* Create decoder object */
 325     p_sys->p_decoder = vlc_object_create( p_stream, VLC_OBJECT_DECODER );
 326     if( !p_sys->p_decoder )
 327         return NULL;
 328     vlc_object_attach( p_sys->p_decoder, p_stream );
 329     p_sys->p_decoder->p_module = NULL;
 330     p_sys->p_decoder->fmt_in = *p_fmt;
 331     p_sys->p_decoder->b_pace_control = false;
 332     p_sys->p_decoder->fmt_out = p_sys->p_decoder->fmt_in;
 333     p_sys->p_decoder->fmt_out.i_extra = 0;
 334     p_sys->p_decoder->fmt_out.p_extra = 0;
 335     p_sys->p_decoder->pf_decode_video = 0;
 336     p_sys->p_decoder->pf_vout_buffer_new = video_new_buffer_decoder;
 337     p_sys->p_decoder->pf_vout_buffer_del = video_del_buffer_decoder;
 338     p_sys->p_decoder->pf_picture_link    = video_link_picture_decoder;
 339     p_sys->p_decoder->pf_picture_unlink  = video_unlink_picture_decoder;
 340     p_sys->p_decoder->p_owner = malloc( sizeof(decoder_owner_sys_t) );
 341     if( !p_sys->p_decoder->p_owner )
 342     {
 343         vlc_object_detach( p_sys->p_decoder );
 344         vlc_object_release( p_sys->p_decoder );
 345         return NULL;
 346     }
 347
 348     for( i = 0; i < PICTURE_RING_SIZE; i++ )
 349         p_sys->p_decoder->p_owner->pp_pics[i] = NULL;
 350     p_sys->p_decoder->p_owner->video = p_fmt->video;
 351     //p_sys->p_decoder->p_cfg = p_sys->p_video_cfg;
 352
 353     p_sys->p_decoder->p_module =
 354         module_Need( p_sys->p_decoder, "decoder", "$codec", 0 );
 355
 356     if( !p_sys->p_decoder->p_module || !p_sys->p_decoder->pf_decode_video )
 357     {
 358         if( p_sys->p_decoder->p_module )
 359         {
 360             msg_Err( p_stream, "instanciated a non video decoder" );
 361             module_Unneed( p_sys->p_decoder, p_sys->p_decoder->p_module );
 362         }
 363         else
 364         {
 365             msg_Err( p_stream, "cannot find decoder" );
 366         }
 367         free( p_sys->p_decoder->p_owner );
 368         vlc_object_detach( p_sys->p_decoder );
 369         vlc_object_release( p_sys->p_decoder );
 370         return NULL;
 371     }
 372
 373     p_sys->b_inited = true;
 374     vlc_mutex_lock( p_sys->p_lock );
 375
 376     p_bridge = GetBridge( p_stream );
 377     if ( p_bridge == NULL )
 378     {
 379         vlc_object_t *p_libvlc = VLC_OBJECT( p_stream->p_libvlc );
 380         vlc_value_t val;
 381
 382         p_bridge = malloc( sizeof( bridge_t ) );
 383
 384         var_Create( p_libvlc, "mosaic-struct", VLC_VAR_ADDRESS );
 385         val.p_address = p_bridge;
 386         var_Set( p_libvlc, "mosaic-struct", val );
 387
 388         p_bridge->i_es_num = 0;
 389         p_bridge->pp_es = NULL;
 390     }
 391
 392     for ( i = 0; i < p_bridge->i_es_num; i++ )
 393     {
 394         if ( p_bridge->pp_es[i]->b_empty )
 395             break;
 396     }
 397
 398     if ( i == p_bridge->i_es_num )
 399     {
 400         p_bridge->pp_es = realloc( p_bridge->pp_es,
 401                                    (p_bridge->i_es_num + 1)
 402                                      * sizeof(bridged_es_t *) );
 403         p_bridge->i_es_num++;
 404         p_bridge->pp_es[i] = malloc( sizeof(bridged_es_t) );
 405     }
 406
 407     p_sys->p_es = p_es = p_bridge->pp_es[i];
 408
 409     p_es->i_alpha = var_GetInteger( p_stream, CFG_PREFIX "alpha" );
 410     p_es->i_x = var_GetInteger( p_stream, CFG_PREFIX "x" );
 411     p_es->i_y = var_GetInteger( p_stream, CFG_PREFIX "y" );
 412
 413     //p_es->fmt = *p_fmt;
 414     p_es->psz_id = p_sys->psz_id;
 415     p_es->p_picture = NULL;
 416     p_es->pp_last = &p_es->p_picture;
 417     p_es->b_empty = false;
 418
 419     vlc_mutex_unlock( p_sys->p_lock );
 420
 421     if ( p_sys->i_height || p_sys->i_width )
 422     {
 423         p_sys->p_image = image_HandlerCreate( p_stream );
 424     }
 425     else
 426     {
 427         p_sys->p_image = NULL;
 428     }
 429
 430     msg_Dbg( p_stream, "mosaic bridge id=%s pos=%d", p_es->psz_id, i );
 431
 432     /* Create user specified video filters */
 433     psz_chain = var_GetNonEmptyString( p_stream, CFG_PREFIX "vfilter" );
 434     msg_Dbg( p_stream, "psz_chain: %s\n", psz_chain );
 435     if( psz_chain )
 436     {
 437         p_sys->p_vf2 = filter_chain_New( p_stream, "video filter2", false,
 438                                          video_filter_buffer_allocation_init,
 439                                          NULL, p_sys->p_decoder->p_owner );
 440         es_format_t fmt;
 441         es_format_Copy( &fmt, &p_sys->p_decoder->fmt_out );
 442         if( p_sys->i_chroma )
 443             fmt.video.i_chroma = p_sys->i_chroma;
 444         filter_chain_Reset( p_sys->p_vf2, &fmt, &fmt );
 445         filter_chain_AppendFromString( p_sys->p_vf2, psz_chain );
 446         free( psz_chain );
 447     }
 448     else
 449     {
 450         p_sys->p_vf2 = NULL;
 451     }
 452
 453     return (sout_stream_id_t *)p_sys;
 454 }
 455
 456 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
 457 {
 458     VLC_UNUSED(id);
 459     sout_stream_sys_t *p_sys = p_stream->p_sys;
 460     bridge_t *p_bridge;
 461     bridged_es_t *p_es;
 462     bool b_last_es = true;
 463     int i;
 464
 465     if( !p_sys->b_inited )
 466         return VLC_SUCCESS;
 467
 468     if( p_sys->p_decoder != NULL )
 469     {
 470         decoder_owner_sys_t *p_owner = p_sys->p_decoder->p_owner;
 471
 472         if( p_sys->p_decoder->p_module )
 473             module_Unneed( p_sys->p_decoder, p_sys->p_decoder->p_module );
 474         vlc_object_detach( p_sys->p_decoder );
 475         vlc_object_release( p_sys->p_decoder );
 476
 477         picture_t **pp_ring = p_owner->pp_pics;
 478         for( i = 0; i < PICTURE_RING_SIZE; i++ )
 479         {
 480             if ( pp_ring[i] != NULL )
 481             {
 482                 free( pp_ring[i]->p_data_orig );
 483                 free( pp_ring[i]->p_sys );
 484                 free( pp_ring[i] );
 485             }
 486         }
 487         free( p_owner );
 488     }
 489
 490     /* Destroy user specified video filters */
 491     if( p_sys->p_vf2 )
 492         filter_chain_Delete( p_sys->p_vf2 );
 493
 494     vlc_mutex_lock( p_sys->p_lock );
 495
 496     p_bridge = GetBridge( p_stream );
 497     p_es = p_sys->p_es;
 498
 499     p_es->b_empty = true;
 500     while ( p_es->p_picture )
 501     {
 502         picture_t *p_next = p_es->p_picture->p_next;
 503         p_es->p_picture->pf_release( p_es->p_picture );
 504         p_es->p_picture = p_next;
 505     }
 506
 507     for ( i = 0; i < p_bridge->i_es_num; i++ )
 508     {
 509         if ( !p_bridge->pp_es[i]->b_empty )
 510         {
 511             b_last_es = false;
 512             break;
 513         }
 514     }
 515
 516     if ( b_last_es )
 517     {
 518         vlc_object_t *p_libvlc = VLC_OBJECT( p_stream->p_libvlc );
 519         for ( i = 0; i < p_bridge->i_es_num; i++ )
 520             free( p_bridge->pp_es[i] );
 521         free( p_bridge->pp_es );
 522         free( p_bridge );
 523         var_Destroy( p_libvlc, "mosaic-struct" );
 524     }
 525
 526     vlc_mutex_unlock( p_sys->p_lock );
 527
 528     if ( p_sys->p_image )
 529     {
 530         image_HandlerDelete( p_sys->p_image );
 531     }
 532
 533     p_sys->b_inited = false;
 534
 535     return VLC_SUCCESS;
 536 }
 537
 538 /*****************************************************************************
 539  * PushPicture : push a picture in the mosaic-struct structure
 540  *****************************************************************************/
 541 static void PushPicture( sout_stream_t *p_stream, picture_t *p_picture )
 542 {
 543     sout_stream_sys_t *p_sys = p_stream->p_sys;
 544     bridged_es_t *p_es = p_sys->p_es;
 545
 546     vlc_mutex_lock( p_sys->p_lock );
 547
 548     *p_es->pp_last = p_picture;
 549     p_picture->p_next = NULL;
 550     p_es->pp_last = &p_picture->p_next;
 551
 552     vlc_mutex_unlock( p_sys->p_lock );
 553 }
 554
 555 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
 556                  block_t *p_buffer )
 557 {
 558     sout_stream_sys_t *p_sys = p_stream->p_sys;
 559     picture_t *p_pic;
 560
 561     if ( (sout_stream_sys_t *)id != p_sys )
 562     {
 563         block_ChainRelease( p_buffer );
 564         return VLC_SUCCESS;
 565     }
 566
 567     while ( (p_pic = p_sys->p_decoder->pf_decode_video( p_sys->p_decoder,
 568                                                         &p_buffer )) )
 569     {
 570         picture_t *p_new_pic;
 571
 572         if( p_sys->i_height || p_sys->i_width )
 573         {
 574             video_format_t fmt_out, fmt_in;
 575
 576             memset( &fmt_in, 0, sizeof(video_format_t) );
 577             memset( &fmt_out, 0, sizeof(video_format_t) );
 578             fmt_in = p_sys->p_decoder->fmt_out.video;
 579
 580
 581             if( p_sys->i_chroma )
 582                 fmt_out.i_chroma = p_sys->i_chroma;
 583             else
 584                 fmt_out.i_chroma = VLC_FOURCC('I','4','2','0');
 585
 586             if ( !p_sys->i_height )
 587             {
 588                 fmt_out.i_width = p_sys->i_width;
 589                 fmt_out.i_height = (p_sys->i_width * VOUT_ASPECT_FACTOR
 590                     * p_sys->i_sar_num / p_sys->i_sar_den / fmt_in.i_aspect)
 591                       & ~0x1;
 592             }
 593             else if ( !p_sys->i_width )
 594             {
 595                 fmt_out.i_height = p_sys->i_height;
 596                 fmt_out.i_width = (p_sys->i_height * fmt_in.i_aspect
 597                     * p_sys->i_sar_den / p_sys->i_sar_num / VOUT_ASPECT_FACTOR)
 598                       & ~0x1;
 599             }
 600             else
 601             {
 602                 fmt_out.i_width = p_sys->i_width;
 603                 fmt_out.i_height = p_sys->i_height;
 604             }
 605             fmt_out.i_visible_width = fmt_out.i_width;
 606             fmt_out.i_visible_height = fmt_out.i_height;
 607
 608             p_new_pic = image_Convert( p_sys->p_image,
 609                                        p_pic, &fmt_in, &fmt_out );
 610             if ( p_new_pic == NULL )
 611             {
 612                 msg_Err( p_stream, "image conversion failed" );
 613                 picture_Release( p_pic );
 614                 continue;
 615             }
 616         }
 617         else
 618         {
 619             /* TODO: chroma conversion if needed */
 620
 621             p_new_pic = (picture_t*)malloc( sizeof(picture_t) );
 622             if( p_new_pic == NULL )
 623             {
 624                 msg_Err( p_stream, "image conversion failed" );
 625                 continue;
 626             }
 627
 628             if( vout_AllocatePicture(
 629                                   p_stream, p_new_pic, p_pic->format.i_chroma,
 630                                   p_pic->format.i_width, p_pic->format.i_height,
 631                                   p_sys->p_decoder->fmt_out.video.i_aspect )
 632                 != VLC_SUCCESS )
 633             {
 634                 picture_Release( p_pic );
 635                 free( p_new_pic );
 636                 msg_Err( p_stream, "image allocation failed" );
 637                 continue;
 638             }
 639
 640             vout_CopyPicture( p_stream, p_new_pic, p_pic );
 641         }
 642
 643         p_new_pic->i_refcount = 1;
 644         p_new_pic->i_status = DESTROYED_PICTURE;
 645         p_new_pic->i_type   = DIRECT_PICTURE;
 646         p_new_pic->p_sys = (picture_sys_t *)p_new_pic->pf_release;
 647         p_new_pic->pf_release = ReleasePicture;
 648         p_new_pic->date = p_pic->date;
 649         picture_Release( p_pic );
 650
 651         if( p_sys->p_vf2 )
 652             p_new_pic = filter_chain_VideoFilter( p_sys->p_vf2, p_new_pic );
 653
 654         PushPicture( p_stream, p_new_pic );
 655     }
 656
 657     return VLC_SUCCESS;
 658 }
 659
 660 struct picture_sys_t
 661 {
 662     vlc_object_t *p_owner;
 663     bool b_dead;
 664 };
 665
 666 static void video_release_buffer_decoder( picture_t *p_pic )
 667 {
 668     assert( p_pic && p_pic->p_sys );
 669
 670     if( --p_pic->i_refcount > 0 )
 671         return;
 672
 673     video_del_buffer_decoder( (decoder_t *)p_pic->p_sys->p_owner, p_pic );
 674 }
 675
 676 static void video_release_buffer_filter( picture_t *p_pic )
 677 {
 678     assert( p_pic );
 679
 680     if( --p_pic->i_refcount > 0 )
 681         return;
 682
 683     assert( p_pic->p_sys );
 684
 685     video_del_buffer_filter( (filter_t *)p_pic->p_sys->p_owner, p_pic );
 686 }
 687
 688 inline static picture_t *video_new_buffer_decoder( decoder_t *p_dec )
 689 {
 690     return video_new_buffer( VLC_OBJECT( p_dec ),
 691                              (decoder_owner_sys_t *)p_dec->p_owner,
 692                              &p_dec->fmt_out,
 693                              video_release_buffer_decoder );
 694 }
 695
 696 inline static picture_t *video_new_buffer_filter( filter_t *p_filter )
 697 {
 698     return video_new_buffer( VLC_OBJECT( p_filter ),
 699                              (decoder_owner_sys_t *)p_filter->p_owner,
 700                              &p_filter->fmt_out,
 701                              video_release_buffer_filter );
 702 }
 703
 704 static picture_t *video_new_buffer( vlc_object_t *p_this,
 705                                     decoder_owner_sys_t *p_sys,
 706                                     es_format_t *fmt_out,
 707                                     void ( *pf_release )( picture_t * ) )
 708 {
 709     picture_t **pp_ring = p_sys->pp_pics;
 710     picture_t *p_pic;
 711     int i;
 712
 713     if( fmt_out->video.i_width != p_sys->video.i_width ||
 714         fmt_out->video.i_height != p_sys->video.i_height ||
 715         fmt_out->video.i_chroma != p_sys->video.i_chroma ||
 716         fmt_out->video.i_aspect != p_sys->video.i_aspect )
 717     {
 718         if( !fmt_out->video.i_sar_num ||
 719             !fmt_out->video.i_sar_den )
 720         {
 721             fmt_out->video.i_sar_num =
 722                 fmt_out->video.i_aspect * fmt_out->video.i_height;
 723
 724             fmt_out->video.i_sar_den =
 725                 VOUT_ASPECT_FACTOR * fmt_out->video.i_width;
 726         }
 727
 728         vlc_ureduce( &fmt_out->video.i_sar_num,
 729                      &fmt_out->video.i_sar_den,
 730                      fmt_out->video.i_sar_num,
 731                      fmt_out->video.i_sar_den, 0 );
 732
 733         if( !fmt_out->video.i_visible_width ||
 734             !fmt_out->video.i_visible_height )
 735         {
 736             fmt_out->video.i_visible_width = fmt_out->video.i_width;
 737             fmt_out->video.i_visible_height = fmt_out->video.i_height;
 738         }
 739
 740         fmt_out->video.i_chroma = fmt_out->i_codec;
 741         p_sys->video = fmt_out->video;
 742
 743         for( i = 0; i < PICTURE_RING_SIZE; i++ )
 744         {
 745             if ( pp_ring[i] != NULL )
 746             {
 747                 if ( pp_ring[i]->i_status == DESTROYED_PICTURE )
 748                 {
 749                     free( pp_ring[i]->p_data_orig );
 750                     free( pp_ring[i]->p_sys );
 751                     free( pp_ring[i] );
 752                 }
 753                 else
 754                 {
 755                     pp_ring[i]->p_sys->b_dead = true;
 756                 }
 757                 pp_ring[i] = NULL;
 758             }
 759         }
 760     }
 761
 762     /* Find an empty space in the picture ring buffer */
 763     for( i = 0; i < PICTURE_RING_SIZE; i++ )
 764     {
 765         if( pp_ring[i] != NULL && pp_ring[i]->i_status == DESTROYED_PICTURE )
 766         {
 767             pp_ring[i]->i_status = RESERVED_PICTURE;
 768             pp_ring[i]->i_refcount = 1;
 769             return pp_ring[i];
 770         }
 771     }
 772     for( i = 0; i < PICTURE_RING_SIZE; i++ )
 773     {
 774         if( pp_ring[i] == NULL ) break;
 775     }
 776
 777     if( i == PICTURE_RING_SIZE )
 778     {
 779         msg_Err( p_this, "decoder/filter is leaking pictures, "
 780                  "resetting its ring buffer" );
 781
 782         for( i = 0; i < PICTURE_RING_SIZE; i++ )
 783         {
 784             pp_ring[i]->p_sys->b_dead = true;
 785             pp_ring[i]->pf_release( pp_ring[i] );
 786             pp_ring[i] = NULL;
 787         }
 788
 789         i = 0;
 790     }
 791
 792     p_pic = malloc( sizeof(picture_t) );
 793     if( !p_pic ) return NULL;
 794     fmt_out->video.i_chroma = fmt_out->i_codec;
 795     if( vout_AllocatePicture( p_this, p_pic,
 796                           fmt_out->video.i_chroma,
 797                           fmt_out->video.i_width,
 798                           fmt_out->video.i_height,
 799                           fmt_out->video.i_aspect ) != VLC_SUCCESS )
 800     {
 801         free( p_pic );
 802         return NULL;
 803     }
 804
 805     if( !p_pic->i_planes )
 806     {
 807         free( p_pic );
 808         return NULL;
 809     }
 810
 811     p_pic->pf_release = pf_release;
 812     p_pic->i_refcount = 1;
 813     p_pic->p_sys = malloc( sizeof(picture_sys_t) );
 814     p_pic->p_sys->p_owner = p_this;
 815     p_pic->p_sys->b_dead = false;
 816     p_pic->i_status = RESERVED_PICTURE;
 817
 818     pp_ring[i] = p_pic;
 819
 820     return p_pic;
 821 }
 822
 823 inline static void video_del_buffer_decoder( decoder_t *p_this,
 824                                              picture_t *p_pic )
 825 {
 826     VLC_UNUSED(p_this);
 827     video_del_buffer( p_pic );
 828 }
 829
 830 inline static void video_del_buffer_filter( filter_t *p_this,
 831                                             picture_t *p_pic )
 832 {
 833     VLC_UNUSED(p_this);
 834     video_del_buffer( p_pic );
 835 }
 836
 837 static void video_del_buffer( picture_t *p_pic )
 838 {
 839     p_pic->i_refcount = 0;
 840     p_pic->i_status = DESTROYED_PICTURE;
 841     if ( p_pic->p_sys->b_dead )
 842     {
 843         free( p_pic->p_data_orig );
 844         free( p_pic->p_sys );
 845         free( p_pic );
 846     }
 847 }
 848
 849 static void video_link_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
 850 {
 851     VLC_UNUSED(p_dec);
 852     p_pic->i_refcount++;
 853 }
 854
 855 static void video_unlink_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
 856 {
 857     VLC_UNUSED(p_dec);
 858     video_release_buffer_decoder( p_pic );
 859 }
 860
 861
 862 /**********************************************************************
 863  * Callback to update (some) params on the fly
 864  **********************************************************************/
 865 static int HeightCallback( vlc_object_t *p_this, char const *psz_var,
 866                            vlc_value_t oldval, vlc_value_t newval,
 867                            void *p_data )
 868 {
 869     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 870     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 871     sout_stream_sys_t *p_sys = p_stream->p_sys;
 872
 873     /* We create the handler before updating the value in p_sys
 874      * so we don't have to worry about locking */
 875     if( !p_sys->p_image && newval.i_int )
 876         p_sys->p_image = image_HandlerCreate( p_stream );
 877     p_sys->i_height = newval.i_int;
 878
 879     return VLC_SUCCESS;
 880 }
 881
 882 static int WidthCallback( vlc_object_t *p_this, char const *psz_var,
 883                            vlc_value_t oldval, vlc_value_t newval,
 884                            void *p_data )
 885 {
 886     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 887     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 888     sout_stream_sys_t *p_sys = p_stream->p_sys;
 889
 890     /* We create the handler before updating the value in p_sys
 891      * so we don't have to worry about locking */
 892     if( !p_sys->p_image && newval.i_int )
 893         p_sys->p_image = image_HandlerCreate( p_stream );
 894     p_sys->i_width = newval.i_int;
 895
 896     return VLC_SUCCESS;
 897 }
 898
 899 static int alphaCallback( vlc_object_t *p_this, char const *psz_var,
 900                           vlc_value_t oldval, vlc_value_t newval,
 901                           void *p_data )
 902 {
 903     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 904     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 905     sout_stream_sys_t *p_sys = p_stream->p_sys;
 906
 907     if( p_sys->p_es )
 908         p_sys->p_es->i_alpha = newval.i_int;
 909
 910     return VLC_SUCCESS;
 911 }
 912
 913 static int xCallback( vlc_object_t *p_this, char const *psz_var,
 914                       vlc_value_t oldval, vlc_value_t newval,
 915                       void *p_data )
 916 {
 917     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 918     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 919     sout_stream_sys_t *p_sys = p_stream->p_sys;
 920
 921     if( p_sys->p_es )
 922         p_sys->p_es->i_x = newval.i_int;
 923
 924     return VLC_SUCCESS;
 925 }
 926
 927 static int yCallback( vlc_object_t *p_this, char const *psz_var,
 928                       vlc_value_t oldval, vlc_value_t newval,
 929                       void *p_data )
 930 {
 931     VLC_UNUSED(p_this); VLC_UNUSED(oldval); VLC_UNUSED(psz_var);
 932     sout_stream_t *p_stream = (sout_stream_t *)p_data;
 933     sout_stream_sys_t *p_sys = p_stream->p_sys;
 934
 935     if( p_sys->p_es )
 936         p_sys->p_es->i_y = newval.i_int;
 937
 938     return VLC_SUCCESS;
 939 }