modules/stream_out/transcode/transcode.c

   1 /*****************************************************************************
   2  * transcode.c: transcoding stream output module
   3  *****************************************************************************
   4  * Copyright (C) 2003-2009 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   8  *          Gildas Bazin <gbazin@videolan.org>
   9  *          Jean-Paul Saman <jpsaman #_at_# m2x dot nl>
  10  *          Antoine Cellerier <dionoea at videolan dot org>
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  25  *****************************************************************************/
  26
  27 /*****************************************************************************
  28  * Preamble
  29  *****************************************************************************/
  30 #ifdef HAVE_CONFIG_H
  31 # include "config.h"
  32 #endif
  33
  34 #include <vlc_common.h>
  35 #include <vlc_plugin.h>
  36
  37 #include <vlc_spu.h>
  38
  39 #include "transcode.h"
  40
  41 /*****************************************************************************
  42  * Module descriptor
  43  *****************************************************************************/
  44 #define VENC_TEXT N_("Video encoder")
  45 #define VENC_LONGTEXT N_( \
  46     "This is the video encoder module that will be used (and its associated "\
  47     "options).")
  48 #define VCODEC_TEXT N_("Destination video codec")
  49 #define VCODEC_LONGTEXT N_( \
  50     "This is the video codec that will be used.")
  51 #define VB_TEXT N_("Video bitrate")
  52 #define VB_LONGTEXT N_( \
  53     "Target bitrate of the transcoded video stream." )
  54 #define SCALE_TEXT N_("Video scaling")
  55 #define SCALE_LONGTEXT N_( \
  56     "Scale factor to apply to the video while transcoding (eg: 0.25)")
  57 #define FPS_TEXT N_("Video frame-rate")
  58 #define FPS_LONGTEXT N_( \
  59     "Target output frame rate for the video stream." )
  60 #define DEINTERLACE_TEXT N_("Deinterlace video")
  61 #define DEINTERLACE_LONGTEXT N_( \
  62     "Deinterlace the video before encoding." )
  63 #define DEINTERLACE_MODULE_TEXT N_("Deinterlace module")
  64 #define DEINTERLACE_MODULE_LONGTEXT N_( \
  65     "Specify the deinterlace module to use." )
  66 #define WIDTH_TEXT N_("Video width")
  67 #define WIDTH_LONGTEXT N_( \
  68     "Output video width." )
  69 #define HEIGHT_TEXT N_("Video height")
  70 #define HEIGHT_LONGTEXT N_( \
  71     "Output video height." )
  72 #define MAXWIDTH_TEXT N_("Maximum video width")
  73 #define MAXWIDTH_LONGTEXT N_( \
  74     "Maximum output video width." )
  75 #define MAXHEIGHT_TEXT N_("Maximum video height")
  76 #define MAXHEIGHT_LONGTEXT N_( \
  77     "Maximum output video height." )
  78 #define VFILTER_TEXT N_("Video filter")
  79 #define VFILTER_LONGTEXT N_( \
  80     "Video filters will be applied to the video streams (after overlays " \
  81     "are applied). You can enter a colon-separated list of filters." )
  82
  83 #define AENC_TEXT N_("Audio encoder")
  84 #define AENC_LONGTEXT N_( \
  85     "This is the audio encoder module that will be used (and its associated "\
  86     "options).")
  87 #define ACODEC_TEXT N_("Destination audio codec")
  88 #define ACODEC_LONGTEXT N_( \
  89     "This is the audio codec that will be used.")
  90 #define AB_TEXT N_("Audio bitrate")
  91 #define AB_LONGTEXT N_( \
  92     "Target bitrate of the transcoded audio stream." )
  93 #define ARATE_TEXT N_("Audio sample rate")
  94 #define ARATE_LONGTEXT N_( \
  95  "Sample rate of the transcoded audio stream (11250, 22500, 44100 or 48000).")
  96 #define ALANG_TEXT N_("Audio Language")
  97 #define ALANG_LONGTEXT N_( \
  98     "This is the language of the audio stream.")
  99 #define ACHANS_TEXT N_("Audio channels")
 100 #define ACHANS_LONGTEXT N_( \
 101     "Number of audio channels in the transcoded streams." )
 102 #define AFILTER_TEXT N_("Audio filter")
 103 #define AFILTER_LONGTEXT N_( \
 104     "Audio filters will be applied to the audio streams (after conversion " \
 105     "filters are applied). You can enter a colon-separated list of filters." )
 106
 107 #define SENC_TEXT N_("Subtitles encoder")
 108 #define SENC_LONGTEXT N_( \
 109     "This is the subtitles encoder module that will be used (and its " \
 110     "associated options)." )
 111 #define SCODEC_TEXT N_("Destination subtitles codec")
 112 #define SCODEC_LONGTEXT N_( \
 113     "This is the subtitles codec that will be used." )
 114
 115 #define SFILTER_TEXT N_("Overlays")
 116 #define SFILTER_LONGTEXT N_( \
 117     "This allows you to add overlays (also known as \"subpictures\" on the "\
 118     "transcoded video stream. The subpictures produced by the filters will "\
 119     "be overlayed directly onto the video. You can specify a colon-separated "\
 120     "list of subpicture modules" )
 121
 122 #define OSD_TEXT N_("OSD menu")
 123 #define OSD_LONGTEXT N_(\
 124     "Stream the On Screen Display menu (using the osdmenu subpicture module)." )
 125
 126 #define THREADS_TEXT N_("Number of threads")
 127 #define THREADS_LONGTEXT N_( \
 128     "Number of threads used for the transcoding." )
 129 #define HP_TEXT N_("High priority")
 130 #define HP_LONGTEXT N_( \
 131     "Runs the optional encoder thread at the OUTPUT priority instead of " \
 132     "VIDEO." )
 133
 134 #define ASYNC_TEXT N_("Synchronise on audio track")
 135 #define ASYNC_LONGTEXT N_( \
 136     "This option will drop/duplicate video frames to synchronise the video " \
 137     "track on the audio track." )
 138
 139 #define HURRYUP_TEXT N_( "Hurry up" )
 140 #define HURRYUP_LONGTEXT N_( "The transcoder will drop frames if your CPU " \
 141                 "can't keep up with the encoding rate." )
 142
 143 static const char *const ppsz_deinterlace_type[] =
 144 {
 145     "deinterlace", "ffmpeg-deinterlace"
 146 };
 147
 148 static int  Open ( vlc_object_t * );
 149 static void Close( vlc_object_t * );
 150
 151 #define SOUT_CFG_PREFIX "sout-transcode-"
 152
 153 vlc_module_begin ()
 154     set_shortname( N_("Transcode"))
 155     set_description( N_("Transcode stream output") )
 156     set_capability( "sout stream", 50 )
 157     add_shortcut( "transcode" )
 158     set_callbacks( Open, Close )
 159     set_category( CAT_SOUT )
 160     set_subcategory( SUBCAT_SOUT_STREAM )
 161     set_section( N_("Video"), NULL )
 162     add_module( SOUT_CFG_PREFIX "venc", "encoder", NULL, NULL, VENC_TEXT,
 163                 VENC_LONGTEXT, false )
 164     add_string( SOUT_CFG_PREFIX "vcodec", NULL, VCODEC_TEXT,
 165                 VCODEC_LONGTEXT, false )
 166     add_integer( SOUT_CFG_PREFIX "vb", 0, NULL, VB_TEXT,
 167                  VB_LONGTEXT, false )
 168     add_float( SOUT_CFG_PREFIX "scale", 0, SCALE_TEXT,
 169                SCALE_LONGTEXT, false )
 170     add_float( SOUT_CFG_PREFIX "fps", 0, FPS_TEXT,
 171                FPS_LONGTEXT, false )
 172     add_bool( SOUT_CFG_PREFIX "hurry-up", true, NULL, HURRYUP_TEXT,
 173                HURRYUP_LONGTEXT, false )
 174     add_bool( SOUT_CFG_PREFIX "deinterlace", false, NULL, DEINTERLACE_TEXT,
 175               DEINTERLACE_LONGTEXT, false )
 176     add_string( SOUT_CFG_PREFIX "deinterlace-module", "deinterlace",
 177                 DEINTERLACE_MODULE_TEXT, DEINTERLACE_MODULE_LONGTEXT,
 178                 false )
 179         change_string_list( ppsz_deinterlace_type, 0, 0 )
 180     add_integer( SOUT_CFG_PREFIX "width", 0, NULL, WIDTH_TEXT,
 181                  WIDTH_LONGTEXT, true )
 182     add_integer( SOUT_CFG_PREFIX "height", 0, NULL, HEIGHT_TEXT,
 183                  HEIGHT_LONGTEXT, true )
 184     add_integer( SOUT_CFG_PREFIX "maxwidth", 0, NULL, MAXWIDTH_TEXT,
 185                  MAXWIDTH_LONGTEXT, true )
 186     add_integer( SOUT_CFG_PREFIX "maxheight", 0, NULL, MAXHEIGHT_TEXT,
 187                  MAXHEIGHT_LONGTEXT, true )
 188     add_module_list( SOUT_CFG_PREFIX "vfilter", "video filter2",
 189                      NULL, NULL,
 190                      VFILTER_TEXT, VFILTER_LONGTEXT, false )
 191
 192     set_section( N_("Audio"), NULL )
 193     add_module( SOUT_CFG_PREFIX "aenc", "encoder", NULL, NULL, AENC_TEXT,
 194                 AENC_LONGTEXT, false )
 195     add_string( SOUT_CFG_PREFIX "acodec", NULL, ACODEC_TEXT,
 196                 ACODEC_LONGTEXT, false )
 197     add_integer( SOUT_CFG_PREFIX "ab", 96, NULL, AB_TEXT,
 198                  AB_LONGTEXT, false )
 199     add_string( SOUT_CFG_PREFIX "alang", NULL, ALANG_TEXT,
 200                 ALANG_LONGTEXT, true )
 201     add_integer( SOUT_CFG_PREFIX "channels", 0, NULL, ACHANS_TEXT,
 202                  ACHANS_LONGTEXT, false )
 203     add_integer( SOUT_CFG_PREFIX "samplerate", 0, NULL, ARATE_TEXT,
 204                  ARATE_LONGTEXT, true )
 205     add_bool( SOUT_CFG_PREFIX "audio-sync", false, NULL, ASYNC_TEXT,
 206               ASYNC_LONGTEXT, false )
 207     add_module_list( SOUT_CFG_PREFIX "afilter",  "audio filter",
 208                      NULL, NULL,
 209                      AFILTER_TEXT, AFILTER_LONGTEXT, false )
 210
 211     set_section( N_("Overlays/Subtitles"), NULL )
 212     add_module( SOUT_CFG_PREFIX "senc", "encoder", NULL, NULL, SENC_TEXT,
 213                 SENC_LONGTEXT, false )
 214     add_string( SOUT_CFG_PREFIX "scodec", NULL, SCODEC_TEXT,
 215                 SCODEC_LONGTEXT, false )
 216     add_bool( SOUT_CFG_PREFIX "soverlay", false, NULL, SCODEC_TEXT,
 217                SCODEC_LONGTEXT, false )
 218     add_module_list( SOUT_CFG_PREFIX "sfilter", "video filter",
 219                      NULL, NULL,
 220                      SFILTER_TEXT, SFILTER_LONGTEXT, false )
 221
 222     set_section( N_("On Screen Display"), NULL )
 223     add_bool( SOUT_CFG_PREFIX "osd", false, NULL, OSD_TEXT,
 224               OSD_LONGTEXT, false )
 225
 226     set_section( N_("Miscellaneous"), NULL )
 227     add_integer( SOUT_CFG_PREFIX "threads", 0, NULL, THREADS_TEXT,
 228                  THREADS_LONGTEXT, true )
 229     add_bool( SOUT_CFG_PREFIX "high-priority", false, NULL, HP_TEXT, HP_LONGTEXT,
 230               true )
 231
 232 vlc_module_end ()
 233
 234 static const char *const ppsz_sout_options[] = {
 235     "venc", "vcodec", "vb",
 236     "scale", "fps", "width", "height", "vfilter", "deinterlace",
 237     "deinterlace-module", "threads", "hurry-up", "aenc", "acodec", "ab", "alang",
 238     "afilter", "samplerate", "channels", "senc", "scodec", "soverlay",
 239     "sfilter", "osd", "audio-sync", "high-priority", "maxwidth", "maxheight",
 240     NULL
 241 };
 242
 243 /*****************************************************************************
 244  * Exported prototypes
 245  *****************************************************************************/
 246 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
 247 static int               Del ( sout_stream_t *, sout_stream_id_t * );
 248 static int               Send( sout_stream_t *, sout_stream_id_t *, block_t* );
 249
 250 /*****************************************************************************
 251  * Open:
 252  *****************************************************************************/
 253 static int Open( vlc_object_t *p_this )
 254 {
 255     sout_stream_t     *p_stream = (sout_stream_t*)p_this;
 256     sout_stream_sys_t *p_sys;
 257     char              *psz_string;
 258
 259     p_sys = vlc_object_create( p_this, sizeof( sout_stream_sys_t ) );
 260
 261     if( !p_stream->p_next )
 262     {
 263         msg_Err( p_stream, "cannot create chain" );
 264         vlc_object_release( p_sys );
 265         return VLC_EGENERIC;
 266     }
 267
 268     p_sys->i_master_drift = 0;
 269
 270     config_ChainParse( p_stream, SOUT_CFG_PREFIX, ppsz_sout_options,
 271                    p_stream->p_cfg );
 272
 273     /* Audio transcoding parameters */
 274     psz_string = var_GetString( p_stream, SOUT_CFG_PREFIX "aenc" );
 275     p_sys->psz_aenc = NULL;
 276     p_sys->p_audio_cfg = NULL;
 277     if( psz_string && *psz_string )
 278     {
 279         char *psz_next;
 280         psz_next = config_ChainCreate( &p_sys->psz_aenc, &p_sys->p_audio_cfg,
 281                                        psz_string );
 282         free( psz_next );
 283     }
 284     free( psz_string );
 285
 286     psz_string = var_GetString( p_stream, SOUT_CFG_PREFIX "acodec" );
 287     p_sys->i_acodec = 0;
 288     if( psz_string && *psz_string )
 289     {
 290         char fcc[4] = "    ";
 291         memcpy( fcc, psz_string, __MIN( strlen( psz_string ), 4 ) );
 292         p_sys->i_acodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
 293     }
 294     free( psz_string );
 295
 296     p_sys->psz_alang = var_GetNonEmptyString( p_stream, SOUT_CFG_PREFIX "alang" );
 297
 298     p_sys->i_abitrate = var_GetInteger( p_stream, SOUT_CFG_PREFIX "ab" );
 299     if( p_sys->i_abitrate < 4000 ) p_sys->i_abitrate *= 1000;
 300
 301     p_sys->i_sample_rate = var_GetInteger( p_stream, SOUT_CFG_PREFIX "samplerate" );
 302
 303     p_sys->i_channels = var_GetInteger( p_stream, SOUT_CFG_PREFIX "channels" );
 304
 305     if( p_sys->i_acodec )
 306     {
 307         if( ( p_sys->i_acodec == VLC_CODEC_MP3 ||
 308               p_sys->i_acodec == VLC_CODEC_MPGA ) && p_sys->i_channels > 2 )
 309         {
 310             msg_Warn( p_stream, "%d channels invalid for mp3, forcing to 2",
 311                       p_sys->i_channels );
 312             p_sys->i_channels = 2;
 313         }
 314         msg_Dbg( p_stream, "codec audio=%4.4s %dHz %d channels %dKb/s",
 315                  (char *)&p_sys->i_acodec, p_sys->i_sample_rate,
 316                  p_sys->i_channels, p_sys->i_abitrate / 1000 );
 317     }
 318
 319     psz_string = var_GetString( p_stream, SOUT_CFG_PREFIX "afilter" );
 320     if( psz_string && *psz_string )
 321         p_sys->psz_af = strdup( psz_string );
 322     else
 323         p_sys->psz_af = NULL;
 324     free( psz_string );
 325
 326     /* Video transcoding parameters */
 327     psz_string = var_GetString( p_stream, SOUT_CFG_PREFIX "venc" );
 328     p_sys->psz_venc = NULL;
 329     p_sys->p_video_cfg = NULL;
 330     if( psz_string && *psz_string )
 331     {
 332         char *psz_next;
 333         psz_next = config_ChainCreate( &p_sys->psz_venc, &p_sys->p_video_cfg,
 334                                    psz_string );
 335         free( psz_next );
 336     }
 337     free( psz_string );
 338
 339     psz_string = var_GetString( p_stream, SOUT_CFG_PREFIX "vcodec" );
 340     p_sys->i_vcodec = 0;
 341     if( psz_string && *psz_string )
 342     {
 343         char fcc[4] = "    ";
 344         memcpy( fcc, psz_string, __MIN( strlen( psz_string ), 4 ) );
 345         p_sys->i_vcodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
 346     }
 347     free( psz_string );
 348
 349     p_sys->i_vbitrate = var_GetInteger( p_stream, SOUT_CFG_PREFIX "vb" );
 350     if( p_sys->i_vbitrate < 16000 ) p_sys->i_vbitrate *= 1000;
 351
 352     p_sys->f_scale = var_GetFloat( p_stream, SOUT_CFG_PREFIX "scale" );
 353
 354     p_sys->f_fps = var_GetFloat( p_stream, SOUT_CFG_PREFIX "fps" );
 355
 356     p_sys->b_hurry_up = var_GetBool( p_stream, SOUT_CFG_PREFIX "hurry-up" );
 357
 358     p_sys->i_width = var_GetInteger( p_stream, SOUT_CFG_PREFIX "width" );
 359
 360     p_sys->i_height = var_GetInteger( p_stream, SOUT_CFG_PREFIX "height" );
 361
 362     p_sys->i_maxwidth = var_GetInteger( p_stream, SOUT_CFG_PREFIX "maxwidth" );
 363
 364     p_sys->i_maxheight = var_GetInteger( p_stream, SOUT_CFG_PREFIX "maxheight" );
 365
 366     psz_string = var_GetString( p_stream, SOUT_CFG_PREFIX "vfilter" );
 367     if( psz_string && *psz_string )
 368         p_sys->psz_vf2 = strdup(psz_string );
 369     else
 370         p_sys->psz_vf2 = NULL;
 371     free( psz_string );
 372
 373     p_sys->b_deinterlace = var_GetBool( p_stream, SOUT_CFG_PREFIX "deinterlace" );
 374
 375     psz_string = var_GetString( p_stream, SOUT_CFG_PREFIX "deinterlace-module" );
 376     p_sys->psz_deinterlace = NULL;
 377     p_sys->p_deinterlace_cfg = NULL;
 378     if( psz_string && *psz_string )
 379     {
 380         char *psz_next;
 381         psz_next = config_ChainCreate( &p_sys->psz_deinterlace,
 382                                    &p_sys->p_deinterlace_cfg,
 383                                    psz_string );
 384         free( psz_next );
 385     }
 386     free( psz_string );
 387
 388     p_sys->i_threads = var_GetInteger( p_stream, SOUT_CFG_PREFIX "threads" );
 389     p_sys->b_high_priority = var_GetBool( p_stream, SOUT_CFG_PREFIX "high-priority" );
 390
 391     if( p_sys->i_vcodec )
 392     {
 393         msg_Dbg( p_stream, "codec video=%4.4s %dx%d scaling: %f %dkb/s",
 394                  (char *)&p_sys->i_vcodec, p_sys->i_width, p_sys->i_height,
 395                  p_sys->f_scale, p_sys->i_vbitrate / 1000 );
 396     }
 397
 398     /* Subpictures transcoding parameters */
 399     p_sys->p_spu = NULL;
 400     p_sys->psz_senc = NULL;
 401     p_sys->p_spu_cfg = NULL;
 402     p_sys->i_scodec = 0;
 403
 404     psz_string = var_GetString( p_stream, SOUT_CFG_PREFIX "senc" );
 405     if( psz_string && *psz_string )
 406     {
 407         char *psz_next;
 408         psz_next = config_ChainCreate( &p_sys->psz_senc, &p_sys->p_spu_cfg,
 409                                    psz_string );
 410         free( psz_next );
 411     }
 412     free( psz_string );
 413
 414     psz_string = var_GetString( p_stream, SOUT_CFG_PREFIX "scodec" );
 415     if( psz_string && *psz_string )
 416     {
 417         char fcc[4] = "    ";
 418         memcpy( fcc, psz_string, __MIN( strlen( psz_string ), 4 ) );
 419         p_sys->i_scodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
 420     }
 421     free( psz_string );
 422
 423     if( p_sys->i_scodec )
 424     {
 425         msg_Dbg( p_stream, "codec spu=%4.4s", (char *)&p_sys->i_scodec );
 426     }
 427
 428     p_sys->b_soverlay = var_GetBool( p_stream, SOUT_CFG_PREFIX "soverlay" );
 429
 430     psz_string = var_GetString( p_stream, SOUT_CFG_PREFIX "sfilter" );
 431     if( psz_string && *psz_string )
 432     {
 433         p_sys->p_spu = spu_Create( p_stream );
 434         if( p_sys->p_spu )
 435             spu_ChangeFilters( p_sys->p_spu, psz_string );
 436     }
 437     free( psz_string );
 438
 439     /* OSD menu transcoding parameters */
 440     p_sys->psz_osdenc = NULL;
 441     p_sys->p_osd_cfg  = NULL;
 442     p_sys->i_osdcodec = 0;
 443     p_sys->b_osd   = var_GetBool( p_stream, SOUT_CFG_PREFIX "osd" );
 444
 445     if( p_sys->b_osd )
 446     {
 447         char *psz_next;
 448
 449         psz_next = config_ChainCreate( &p_sys->psz_osdenc,
 450                                    &p_sys->p_osd_cfg, strdup( "dvbsub") );
 451         free( psz_next );
 452
 453         p_sys->i_osdcodec = VLC_CODEC_YUVP;
 454
 455         msg_Dbg( p_stream, "codec osd=%4.4s", (char *)&p_sys->i_osdcodec );
 456
 457         if( !p_sys->p_spu )
 458         {
 459             p_sys->p_spu = spu_Create( p_stream );
 460             if( p_sys->p_spu )
 461                 spu_ChangeFilters( p_sys->p_spu, "osdmenu" );
 462         }
 463         else
 464         {
 465             spu_ChangeFilters( p_sys->p_spu, "osdmenu" );
 466         }
 467     }
 468
 469     /* Audio settings */
 470     p_sys->b_master_sync = var_GetBool( p_stream, SOUT_CFG_PREFIX "audio-sync" );
 471     if( p_sys->f_fps > 0 ) p_sys->b_master_sync = true;
 472
 473     p_stream->pf_add    = Add;
 474     p_stream->pf_del    = Del;
 475     p_stream->pf_send   = Send;
 476     p_stream->p_sys     = p_sys;
 477
 478     return VLC_SUCCESS;
 479 }
 480
 481 /*****************************************************************************
 482  * Close:
 483  *****************************************************************************/
 484 static void Close( vlc_object_t * p_this )
 485 {
 486     sout_stream_t       *p_stream = (sout_stream_t*)p_this;
 487     sout_stream_sys_t   *p_sys = p_stream->p_sys;
 488
 489     free( p_sys->psz_af );
 490
 491     config_ChainDestroy( p_sys->p_audio_cfg );
 492     free( p_sys->psz_aenc );
 493     free( p_sys->psz_alang );
 494
 495     free( p_sys->psz_vf2 );
 496
 497     config_ChainDestroy( p_sys->p_video_cfg );
 498     free( p_sys->psz_venc );
 499
 500     config_ChainDestroy( p_sys->p_deinterlace_cfg );
 501     free( p_sys->psz_deinterlace );
 502
 503     config_ChainDestroy( p_sys->p_spu_cfg );
 504     free( p_sys->psz_senc );
 505
 506     if( p_sys->p_spu ) spu_Destroy( p_sys->p_spu );
 507
 508     config_ChainDestroy( p_sys->p_osd_cfg );
 509     free( p_sys->psz_osdenc );
 510
 511     vlc_object_release( p_sys );
 512 }
 513
 514 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
 515 {
 516     sout_stream_sys_t *p_sys = p_stream->p_sys;
 517     sout_stream_id_t *id;
 518
 519     id = calloc( 1, sizeof( sout_stream_id_t ) );
 520     if( !id )
 521         goto error;
 522
 523     id->id = NULL;
 524     id->p_decoder = NULL;
 525     id->p_encoder = NULL;
 526
 527     /* Create decoder object */
 528     id->p_decoder = vlc_object_create( p_stream, sizeof( decoder_t ) );
 529     if( !id->p_decoder )
 530         goto error;
 531     vlc_object_attach( id->p_decoder, p_stream );
 532     id->p_decoder->p_module = NULL;
 533     id->p_decoder->fmt_in = *p_fmt;
 534     id->p_decoder->b_pace_control = true;
 535
 536     /* Create encoder object */
 537     id->p_encoder = sout_EncoderCreate( p_stream );
 538     if( !id->p_encoder )
 539         goto error;
 540     vlc_object_attach( id->p_encoder, p_stream );
 541     id->p_encoder->p_module = NULL;
 542
 543     /* Create destination format */
 544     es_format_Init( &id->p_encoder->fmt_out, p_fmt->i_cat, 0 );
 545     id->p_encoder->fmt_out.i_id    = p_fmt->i_id;
 546     id->p_encoder->fmt_out.i_group = p_fmt->i_group;
 547
 548     if( p_sys->psz_alang )
 549         id->p_encoder->fmt_out.psz_language = strdup( p_sys->psz_alang );
 550     else if( p_fmt->psz_language )
 551         id->p_encoder->fmt_out.psz_language = strdup( p_fmt->psz_language );
 552
 553     bool success;
 554
 555     if( p_fmt->i_cat == AUDIO_ES && (p_sys->i_acodec || p_sys->psz_aenc) )
 556         success = transcode_audio_add(p_stream, p_fmt, id);
 557     else if( p_fmt->i_cat == VIDEO_ES && (p_sys->i_vcodec || p_sys->psz_venc) )
 558         success = transcode_video_add(p_stream, p_fmt, id);
 559     else if( ( p_fmt->i_cat == SPU_ES ) &&
 560              ( p_sys->i_scodec || p_sys->psz_senc || p_sys->b_soverlay ) )
 561         success = transcode_spu_add(p_stream, p_fmt, id);
 562     else if( !p_sys->b_osd && (p_sys->i_osdcodec != 0 || p_sys->psz_osdenc) )
 563         success = transcode_osd_add(p_stream, p_fmt, id);
 564     else
 565     {
 566         msg_Dbg( p_stream, "not transcoding a stream (fcc=`%4.4s')",
 567                  (char*)&p_fmt->i_codec );
 568         id->id = sout_StreamIdAdd( p_stream->p_next, p_fmt );
 569         id->b_transcode = false;
 570
 571         success = id->id;
 572     }
 573
 574     if(!success)
 575         goto error;
 576
 577     return id;
 578
 579 error:
 580     if( id )
 581     {
 582         if( id->p_decoder )
 583         {
 584             vlc_object_release( id->p_decoder );
 585             id->p_decoder = NULL;
 586         }
 587
 588         if( id->p_encoder )
 589         {
 590             es_format_Clean( &id->p_encoder->fmt_out );
 591             vlc_object_release( id->p_encoder );
 592             id->p_encoder = NULL;
 593         }
 594
 595         free( id );
 596     }
 597     return NULL;
 598 }
 599
 600 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
 601 {
 602     sout_stream_sys_t *p_sys = p_stream->p_sys;
 603
 604     if( id->b_transcode )
 605     {
 606         switch( id->p_decoder->fmt_in.i_cat )
 607         {
 608         case AUDIO_ES:
 609             transcode_audio_close( id );
 610             break;
 611         case VIDEO_ES:
 612             Send( p_stream, id, NULL );
 613             transcode_video_close( p_stream, id );
 614             break;
 615         case SPU_ES:
 616             if( p_sys->b_osd )
 617                 transcode_osd_close( p_stream, id );
 618             else
 619                 transcode_spu_close( p_stream, id );
 620             break;
 621         }
 622     }
 623
 624     if( id->id ) sout_StreamIdDel( p_stream->p_next, id->id );
 625
 626     if( id->p_decoder )
 627     {
 628         vlc_object_release( id->p_decoder );
 629         id->p_decoder = NULL;
 630     }
 631
 632     if( id->p_encoder )
 633     {
 634         es_format_Clean( &id->p_encoder->fmt_out );
 635         vlc_object_release( id->p_encoder );
 636         id->p_encoder = NULL;
 637     }
 638     free( id );
 639
 640     return VLC_SUCCESS;
 641 }
 642
 643 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
 644                  block_t *p_buffer )
 645 {
 646     sout_stream_sys_t *p_sys = p_stream->p_sys;
 647     block_t *p_out = NULL;
 648
 649     if( !id->b_transcode )
 650     {
 651         if( id->id )
 652             return sout_StreamIdSend( p_stream->p_next, id->id, p_buffer );
 653
 654         block_Release( p_buffer );
 655         return VLC_EGENERIC;
 656     }
 657
 658     switch( id->p_decoder->fmt_in.i_cat )
 659     {
 660     case AUDIO_ES:
 661         transcode_audio_process( p_stream, id, p_buffer, &p_out );
 662         break;
 663
 664     case VIDEO_ES:
 665         if( transcode_video_process( p_stream, id, p_buffer, &p_out )
 666             != VLC_SUCCESS )
 667         {
 668             return VLC_EGENERIC;
 669         }
 670         break;
 671
 672     case SPU_ES:
 673         /* Transcode OSD menu pictures. */
 674         if( p_sys->b_osd )
 675         {
 676             if( transcode_osd_process( p_stream, id, p_buffer, &p_out ) !=
 677                 VLC_SUCCESS )
 678             {
 679                 return VLC_EGENERIC;
 680             }
 681         }
 682         else if ( transcode_spu_process( p_stream, id, p_buffer, &p_out ) !=
 683             VLC_SUCCESS )
 684         {
 685             return VLC_EGENERIC;
 686         }
 687         break;
 688
 689     default:
 690         p_out = NULL;
 691         block_Release( p_buffer );
 692         break;
 693     }
 694
 695     if( p_out )
 696         return sout_StreamIdSend( p_stream->p_next, id->id, p_out );
 697     return VLC_SUCCESS;
 698 }