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

   1 /*****************************************************************************
   2  * transcode.c: transcoding stream output module
   3  *****************************************************************************
   4  * Copyright (C) 2003-2004 VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   8  *          Gildas Bazin <gbazin@videolan.org>
   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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28 #include <stdlib.h>
  29 #include <string.h>
  30
  31 #include <vlc/vlc.h>
  32 #include <vlc/input.h>
  33 #include <vlc/sout.h>
  34 #include <vlc/vout.h>
  35 #include <vlc/decoder.h>
  36 #include "vlc_filter.h"
  37 #include "osd.h"
  38
  39 /*****************************************************************************
  40  * Module descriptor
  41  *****************************************************************************/
  42 #define VENC_TEXT N_("Video encoder")
  43 #define VENC_LONGTEXT N_( \
  44     "Allows you to specify the video encoder to use and its associated " \
  45     "options." )
  46 #define VCODEC_TEXT N_("Destination video codec")
  47 #define VCODEC_LONGTEXT N_( \
  48     "Allows you to specify the destination video codec used for the " \
  49     "streaming output." )
  50 #define VB_TEXT N_("Video bitrate")
  51 #define VB_LONGTEXT N_( \
  52     "Allows you to specify the video bitrate used for the streaming " \
  53     "output." )
  54 #define SCALE_TEXT N_("Video scaling")
  55 #define SCALE_LONGTEXT N_( \
  56     "Allows you to scale the video before encoding." )
  57 #define FPS_TEXT N_("Video frame-rate")
  58 #define FPS_LONGTEXT N_( \
  59     "Allows you to specify an output frame rate for the video." )
  60 #define DEINTERLACE_TEXT N_("Deinterlace video")
  61 #define DEINTERLACE_LONGTEXT N_( \
  62     "Allows you to deinterlace the video before encoding." )
  63 #define WIDTH_TEXT N_("Video width")
  64 #define WIDTH_LONGTEXT N_( \
  65     "Allows you to specify the output video width." )
  66 #define HEIGHT_TEXT N_("Video height")
  67 #define HEIGHT_LONGTEXT N_( \
  68     "Allows you to specify the output video height." )
  69
  70 #define CROPTOP_TEXT N_("Video crop top")
  71 #define CROPTOP_LONGTEXT N_( \
  72     "Allows you to specify the top coordinate for the video cropping." )
  73 #define CROPLEFT_TEXT N_("Video crop left")
  74 #define CROPLEFT_LONGTEXT N_( \
  75     "Allows you to specify the left coordinate for the video cropping." )
  76 #define CROPBOTTOM_TEXT N_("Video crop bottom")
  77 #define CROPBOTTOM_LONGTEXT N_( \
  78     "Allows you to specify the bottom coordinate for the video cropping." )
  79 #define CROPRIGHT_TEXT N_("Video crop right")
  80 #define CROPRIGHT_LONGTEXT N_( \
  81     "Allows you to specify the right coordinate for the video cropping." )
  82
  83 #define AENC_TEXT N_("Audio encoder")
  84 #define AENC_LONGTEXT N_( \
  85     "Allows you to specify the audio encoder to use and its associated " \
  86     "options." )
  87 #define ACODEC_TEXT N_("Destination audio codec")
  88 #define ACODEC_LONGTEXT N_( \
  89     "Allows you to specify the destination audio codec used for the " \
  90     "streaming output." )
  91 #define AB_TEXT N_("Audio bitrate")
  92 #define AB_LONGTEXT N_( \
  93     "Allows you to specify the audio bitrate used for the streaming " \
  94     "output." )
  95 #define ARATE_TEXT N_("Audio sample rate")
  96 #define ARATE_LONGTEXT N_( \
  97     "Allows you to specify the audio sample rate used for the streaming " \
  98     "output." )
  99 #define ACHANS_TEXT N_("Audio channels")
 100 #define ACHANS_LONGTEXT N_( \
 101     "Allows you to specify the number of audio channels used for the " \
 102     "streaming output." )
 103
 104 #define SENC_TEXT N_("Subtitles encoder")
 105 #define SENC_LONGTEXT N_( \
 106     "Allows you to specify the subtitles encoder to use and its associated " \
 107     "options." )
 108 #define SCODEC_TEXT N_("Destination subtitles codec")
 109 #define SCODEC_LONGTEXT N_( \
 110     "Allows you to specify the destination subtitles codec used for the " \
 111     "streaming output." )
 112 #define SFILTER_TEXT N_("Subpictures filter")
 113 #define SFILTER_LONGTEXT N_( \
 114     "Allows you to specify subpictures filters used during the video " \
 115     "transcoding. The subpictures produced by the filters will be overlayed " \
 116     "directly onto the video." )
 117
 118 #define THREADS_TEXT N_("Number of threads")
 119 #define THREADS_LONGTEXT N_( \
 120     "Allows you to specify the number of threads used for the transcoding." )
 121
 122 #define ASYNC_TEXT N_("Synchronise on audio track")
 123 #define ASYNC_LONGTEXT N_( \
 124     "This option will drop/duplicate video frames to synchronise the video " \
 125     "track on the audio track." )
 126
 127 static int  Open ( vlc_object_t * );
 128 static void Close( vlc_object_t * );
 129
 130 #define SOUT_CFG_PREFIX "sout-transcode-"
 131
 132 vlc_module_begin();
 133     set_description( _("Transcode stream output") );
 134     set_capability( "sout stream", 50 );
 135     add_shortcut( "transcode" );
 136     set_callbacks( Open, Close );
 137     set_category( CAT_SOUT );
 138     set_subcategory( SUBCAT_SOUT_STREAM );
 139
 140     add_string( SOUT_CFG_PREFIX "venc", NULL, NULL, VENC_TEXT,
 141                 VENC_LONGTEXT, VLC_FALSE );
 142     add_string( SOUT_CFG_PREFIX "vcodec", NULL, NULL, VCODEC_TEXT,
 143                 VCODEC_LONGTEXT, VLC_FALSE );
 144     add_integer( SOUT_CFG_PREFIX "vb", 800 * 1000, NULL, VB_TEXT,
 145                  VB_LONGTEXT, VLC_FALSE );
 146     add_float( SOUT_CFG_PREFIX "scale", 1, NULL, SCALE_TEXT,
 147                SCALE_LONGTEXT, VLC_FALSE );
 148     add_float( SOUT_CFG_PREFIX "fps", 0, NULL, FPS_TEXT,
 149                FPS_LONGTEXT, VLC_FALSE );
 150     add_bool( SOUT_CFG_PREFIX "deinterlace", 0, NULL, DEINTERLACE_TEXT,
 151               DEINTERLACE_LONGTEXT, VLC_FALSE );
 152     add_integer( SOUT_CFG_PREFIX "width", 0, NULL, WIDTH_TEXT,
 153                  WIDTH_LONGTEXT, VLC_TRUE );
 154     add_integer( SOUT_CFG_PREFIX "height", 0, NULL, HEIGHT_TEXT,
 155                  HEIGHT_LONGTEXT, VLC_TRUE );
 156
 157     add_integer( SOUT_CFG_PREFIX "croptop", 0, NULL, CROPTOP_TEXT,
 158                  CROPTOP_LONGTEXT, VLC_TRUE );
 159     add_integer( SOUT_CFG_PREFIX "cropleft", 0, NULL, CROPLEFT_TEXT,
 160                  CROPLEFT_LONGTEXT, VLC_TRUE );
 161     add_integer( SOUT_CFG_PREFIX "cropbottom", 0, NULL, CROPBOTTOM_TEXT,
 162                  CROPBOTTOM_LONGTEXT, VLC_TRUE );
 163     add_integer( SOUT_CFG_PREFIX "cropright", 0, NULL, CROPRIGHT_TEXT,
 164                  CROPRIGHT_LONGTEXT, VLC_TRUE );
 165
 166     add_string( SOUT_CFG_PREFIX "aenc", NULL, NULL, AENC_TEXT,
 167                 AENC_LONGTEXT, VLC_FALSE );
 168     add_string( SOUT_CFG_PREFIX "acodec", NULL, NULL, ACODEC_TEXT,
 169                 ACODEC_LONGTEXT, VLC_FALSE );
 170     add_integer( SOUT_CFG_PREFIX "ab", 64000, NULL, AB_TEXT,
 171                  AB_LONGTEXT, VLC_FALSE );
 172     add_integer( SOUT_CFG_PREFIX "channels", 0, NULL, ACHANS_TEXT,
 173                  ACHANS_LONGTEXT, VLC_FALSE );
 174     add_integer( SOUT_CFG_PREFIX "samplerate", 0, NULL, ARATE_TEXT,
 175                  ARATE_LONGTEXT, VLC_TRUE );
 176
 177     add_string( SOUT_CFG_PREFIX "senc", NULL, NULL, SENC_TEXT,
 178                 SENC_LONGTEXT, VLC_FALSE );
 179     add_string( SOUT_CFG_PREFIX "scodec", NULL, NULL, SCODEC_TEXT,
 180                 SCODEC_LONGTEXT, VLC_FALSE );
 181     add_bool( SOUT_CFG_PREFIX "soverlay", 0, NULL, SCODEC_TEXT,
 182                SCODEC_LONGTEXT, VLC_FALSE );
 183     add_string( SOUT_CFG_PREFIX "sfilter", NULL, NULL, SFILTER_TEXT,
 184                 SFILTER_LONGTEXT, VLC_FALSE );
 185
 186     add_integer( SOUT_CFG_PREFIX "threads", 0, NULL, THREADS_TEXT,
 187                  THREADS_LONGTEXT, VLC_TRUE );
 188
 189     add_bool( SOUT_CFG_PREFIX "audio-sync", 0, NULL, ASYNC_TEXT,
 190               ASYNC_LONGTEXT, VLC_FALSE );
 191 vlc_module_end();
 192
 193 static const char *ppsz_sout_options[] = {
 194     "venc", "vcodec", "vb", "croptop", "cropbottom", "cropleft", "cropright",
 195     "scale", "fps", "width", "height", "deinterlace", "threads",
 196     "aenc", "acodec", "ab", "samplerate", "channels",
 197     "senc", "scodec", "soverlay", "sfilter",
 198     "audio-sync", NULL
 199 };
 200
 201 /*****************************************************************************
 202  * Exported prototypes
 203  *****************************************************************************/
 204 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
 205 static int               Del ( sout_stream_t *, sout_stream_id_t * );
 206 static int               Send( sout_stream_t *, sout_stream_id_t *, block_t* );
 207
 208 static int  transcode_audio_new    ( sout_stream_t *, sout_stream_id_t * );
 209 static void transcode_audio_close  ( sout_stream_t *, sout_stream_id_t * );
 210 static int  transcode_audio_process( sout_stream_t *, sout_stream_id_t *,
 211                                      block_t *, block_t ** );
 212
 213 static aout_buffer_t *audio_new_buffer( decoder_t *, int );
 214 static void audio_del_buffer( decoder_t *, aout_buffer_t * );
 215
 216 static int  transcode_video_new    ( sout_stream_t *, sout_stream_id_t * );
 217 static void transcode_video_close  ( sout_stream_t *, sout_stream_id_t * );
 218 static int  transcode_video_encoder_open( sout_stream_t *, sout_stream_id_t *);
 219 static int  transcode_video_process( sout_stream_t *, sout_stream_id_t *,
 220                                      block_t *, block_t ** );
 221
 222 static void video_del_buffer( vlc_object_t *, picture_t * );
 223 static picture_t *video_new_buffer_decoder( decoder_t * );
 224 static void video_del_buffer_decoder( decoder_t *, picture_t * );
 225 static void video_link_picture_decoder( decoder_t *, picture_t * );
 226 static void video_unlink_picture_decoder( decoder_t *, picture_t * );
 227 static picture_t *video_new_buffer_filter( filter_t * );
 228 static void video_del_buffer_filter( filter_t *, picture_t * );
 229
 230 static int  transcode_spu_new    ( sout_stream_t *, sout_stream_id_t * );
 231 static void transcode_spu_close  ( sout_stream_t *, sout_stream_id_t * );
 232 static int  transcode_spu_process( sout_stream_t *, sout_stream_id_t *,
 233                                    block_t *, block_t ** );
 234
 235 static int  EncoderThread( struct sout_stream_sys_t * p_sys );
 236
 237 static int pi_channels_maps[6] =
 238 {
 239     0,
 240     AOUT_CHAN_CENTER,   AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
 241     AOUT_CHAN_CENTER | AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
 242     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARLEFT
 243      | AOUT_CHAN_REARRIGHT,
 244     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
 245      | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
 246 };
 247
 248 #define PICTURE_RING_SIZE 64
 249 #define SUBPICTURE_RING_SIZE 20
 250
 251 struct sout_stream_sys_t
 252 {
 253     VLC_COMMON_MEMBERS
 254
 255     sout_stream_t   *p_out;
 256     sout_stream_id_t *id_video;
 257     block_t         *p_buffers;
 258     vlc_mutex_t     lock_out;
 259     vlc_cond_t      cond;
 260     picture_t *     pp_pics[PICTURE_RING_SIZE];
 261     int             i_first_pic, i_last_pic;
 262
 263     /* Audio */
 264     vlc_fourcc_t    i_acodec;   /* codec audio (0 if not transcode) */
 265     char            *psz_aenc;
 266     sout_cfg_t      *p_audio_cfg;
 267     int             i_sample_rate;
 268     int             i_channels;
 269     int             i_abitrate;
 270
 271     /* Video */
 272     vlc_fourcc_t    i_vcodec;   /* codec video (0 if not transcode) */
 273     char            *psz_venc;
 274     sout_cfg_t      *p_video_cfg;
 275     int             i_vbitrate;
 276     double          f_scale;
 277     double          f_fps;
 278     int             i_width;
 279     int             i_height;
 280     vlc_bool_t      b_deinterlace;
 281     int             i_threads;
 282
 283     int             i_crop_top;
 284     int             i_crop_bottom;
 285     int             i_crop_right;
 286     int             i_crop_left;
 287
 288     /* SPU */
 289     vlc_fourcc_t    i_scodec;   /* codec spu (0 if not transcode) */
 290     char            *psz_senc;
 291     vlc_bool_t      b_soverlay;
 292     sout_cfg_t      *p_spu_cfg;
 293     spu_t           *p_spu;
 294
 295     /* Sync */
 296     vlc_bool_t      b_master_sync;
 297     mtime_t         i_master_drift;
 298 };
 299
 300 struct decoder_owner_sys_t
 301 {
 302     picture_t *pp_pics[PICTURE_RING_SIZE];
 303 };
 304 struct filter_owner_sys_t
 305 {
 306     picture_t *pp_pics[PICTURE_RING_SIZE];
 307 };
 308
 309 /*****************************************************************************
 310  * Open:
 311  *****************************************************************************/
 312 static int Open( vlc_object_t *p_this )
 313 {
 314     sout_stream_t     *p_stream = (sout_stream_t*)p_this;
 315     sout_stream_sys_t *p_sys;
 316     vlc_value_t       val;
 317
 318     p_sys = vlc_object_create( p_this, sizeof( sout_stream_sys_t ) );
 319
 320     p_sys->p_out = sout_StreamNew( p_stream->p_sout, p_stream->psz_next );
 321     if( !p_sys->p_out )
 322     {
 323         msg_Err( p_stream, "cannot create chain" );
 324         free( p_sys );
 325         return VLC_EGENERIC;
 326     }
 327
 328     p_sys->i_master_drift = 0;
 329
 330     sout_CfgParse( p_stream, SOUT_CFG_PREFIX, ppsz_sout_options,
 331                    p_stream->p_cfg );
 332
 333     /* Audio transcoding parameters */
 334     var_Get( p_stream, SOUT_CFG_PREFIX "aenc", &val );
 335     p_sys->psz_aenc = NULL;
 336     p_sys->p_audio_cfg = NULL;
 337     if( val.psz_string && *val.psz_string )
 338     {
 339         char *psz_next;
 340         psz_next = sout_CfgCreate( &p_sys->psz_aenc, &p_sys->p_audio_cfg,
 341                                    val.psz_string );
 342         if( psz_next ) free( psz_next );
 343     }
 344     if( val.psz_string ) free( val.psz_string );
 345
 346     var_Get( p_stream, SOUT_CFG_PREFIX "acodec", &val );
 347     p_sys->i_acodec = 0;
 348     if( val.psz_string && *val.psz_string )
 349     {
 350         char fcc[4] = "    ";
 351         memcpy( fcc, val.psz_string, __MIN( strlen( val.psz_string ), 4 ) );
 352         p_sys->i_acodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
 353     }
 354     if( val.psz_string ) free( val.psz_string );
 355
 356     var_Get( p_stream, SOUT_CFG_PREFIX "ab", &val );
 357     p_sys->i_abitrate = val.i_int;
 358     if( p_sys->i_abitrate < 4000 ) p_sys->i_abitrate *= 1000;
 359
 360     var_Get( p_stream, SOUT_CFG_PREFIX "samplerate", &val );
 361     p_sys->i_sample_rate = val.i_int;
 362
 363     var_Get( p_stream, SOUT_CFG_PREFIX "channels", &val );
 364     p_sys->i_channels = val.i_int;
 365
 366     if( p_sys->i_acodec )
 367     {
 368         msg_Dbg( p_stream, "codec audio=%4.4s %dHz %d channels %dKb/s",
 369                  (char *)&p_sys->i_acodec, p_sys->i_sample_rate,
 370                  p_sys->i_channels, p_sys->i_abitrate / 1000 );
 371     }
 372
 373     /* Video transcoding parameters */
 374     var_Get( p_stream, SOUT_CFG_PREFIX "venc", &val );
 375     p_sys->psz_venc = NULL;
 376     p_sys->p_video_cfg = NULL;
 377     if( val.psz_string && *val.psz_string )
 378     {
 379         char *psz_next;
 380         psz_next = sout_CfgCreate( &p_sys->psz_venc, &p_sys->p_video_cfg,
 381                                    val.psz_string );
 382         if( psz_next ) free( psz_next );
 383     }
 384     if( val.psz_string ) free( val.psz_string );
 385
 386     var_Get( p_stream, SOUT_CFG_PREFIX "vcodec", &val );
 387     p_sys->i_vcodec = 0;
 388     if( val.psz_string && *val.psz_string )
 389     {
 390         char fcc[4] = "    ";
 391         memcpy( fcc, val.psz_string, __MIN( strlen( val.psz_string ), 4 ) );
 392         p_sys->i_vcodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
 393     }
 394     if( val.psz_string ) free( val.psz_string );
 395
 396     var_Get( p_stream, SOUT_CFG_PREFIX "vb", &val );
 397     p_sys->i_vbitrate = val.i_int;
 398     if( p_sys->i_vbitrate < 16000 ) p_sys->i_vbitrate *= 1000;
 399
 400     var_Get( p_stream, SOUT_CFG_PREFIX "scale", &val );
 401     p_sys->f_scale = val.f_float;
 402
 403     var_Get( p_stream, SOUT_CFG_PREFIX "fps", &val );
 404     p_sys->f_fps = val.f_float;
 405
 406     var_Get( p_stream, SOUT_CFG_PREFIX "width", &val );
 407     p_sys->i_width = val.i_int;
 408
 409     var_Get( p_stream, SOUT_CFG_PREFIX "height", &val );
 410     p_sys->i_height = val.i_int;
 411
 412     var_Get( p_stream, SOUT_CFG_PREFIX "deinterlace", &val );
 413     p_sys->b_deinterlace = val.b_bool;
 414
 415     var_Get( p_stream, SOUT_CFG_PREFIX "croptop", &val );
 416     p_sys->i_crop_top = val.i_int;
 417     var_Get( p_stream, SOUT_CFG_PREFIX "cropbottom", &val );
 418     p_sys->i_crop_bottom = val.i_int;
 419     var_Get( p_stream, SOUT_CFG_PREFIX "cropleft", &val );
 420     p_sys->i_crop_left = val.i_int;
 421     var_Get( p_stream, SOUT_CFG_PREFIX "cropright", &val );
 422     p_sys->i_crop_right = val.i_int;
 423
 424     var_Get( p_stream, SOUT_CFG_PREFIX "threads", &val );
 425     p_sys->i_threads = val.i_int;
 426
 427     if( p_sys->i_vcodec )
 428     {
 429         msg_Dbg( p_stream, "codec video=%4.4s %dx%d scaling: %f %dkb/s",
 430                  (char *)&p_sys->i_vcodec, p_sys->i_width, p_sys->i_height,
 431                  p_sys->f_scale, p_sys->i_vbitrate / 1000 );
 432     }
 433
 434     /* Subpictures transcoding parameters */
 435     p_sys->p_spu = 0;
 436     p_sys->psz_senc = NULL;
 437     p_sys->p_spu_cfg = NULL;
 438     p_sys->i_scodec = 0;
 439
 440     var_Get( p_stream, SOUT_CFG_PREFIX "senc", &val );
 441     if( val.psz_string && *val.psz_string )
 442     {
 443         char *psz_next;
 444         psz_next = sout_CfgCreate( &p_sys->psz_senc, &p_sys->p_spu_cfg,
 445                                    val.psz_string );
 446         if( psz_next ) free( psz_next );
 447     }
 448     if( val.psz_string ) free( val.psz_string );
 449
 450     var_Get( p_stream, SOUT_CFG_PREFIX "scodec", &val );
 451     if( val.psz_string && *val.psz_string )
 452     {
 453         char fcc[4] = "    ";
 454         memcpy( fcc, val.psz_string, __MIN( strlen( val.psz_string ), 4 ) );
 455         p_sys->i_scodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
 456     }
 457     if( val.psz_string ) free( val.psz_string );
 458
 459     if( p_sys->i_scodec )
 460     {
 461         msg_Dbg( p_stream, "codec spu=%4.4s", (char *)&p_sys->i_acodec );
 462     }
 463
 464     var_Get( p_stream, SOUT_CFG_PREFIX "soverlay", &val );
 465     p_sys->b_soverlay = val.b_bool;
 466
 467     var_Get( p_stream, SOUT_CFG_PREFIX "sfilter", &val );
 468     if( val.psz_string && *val.psz_string )
 469     {
 470         p_sys->p_spu = spu_Create( p_stream );
 471         var_Create( p_sys->p_spu, "sub-filter", VLC_VAR_STRING );
 472         var_Set( p_sys->p_spu, "sub-filter", val );
 473         spu_Init( p_sys->p_spu );
 474     }
 475     if( val.psz_string ) free( val.psz_string );
 476
 477     var_Get( p_stream, SOUT_CFG_PREFIX "audio-sync", &val );
 478     p_sys->b_master_sync = val.b_bool;
 479     if( p_sys->f_fps > 0 ) p_sys->b_master_sync = VLC_TRUE;
 480
 481     p_stream->pf_add    = Add;
 482     p_stream->pf_del    = Del;
 483     p_stream->pf_send   = Send;
 484     p_stream->p_sys     = p_sys;
 485
 486     return VLC_SUCCESS;
 487 }
 488
 489 /*****************************************************************************
 490  * Close:
 491  *****************************************************************************/
 492 static void Close( vlc_object_t * p_this )
 493 {
 494     sout_stream_t       *p_stream = (sout_stream_t*)p_this;
 495     sout_stream_sys_t   *p_sys = p_stream->p_sys;
 496
 497     sout_StreamDelete( p_sys->p_out );
 498
 499     while( p_sys->p_audio_cfg != NULL )
 500     {
 501         sout_cfg_t *p_next = p_sys->p_audio_cfg->p_next;
 502
 503         if( p_sys->p_audio_cfg->psz_name )
 504             free( p_sys->p_audio_cfg->psz_name );
 505         if( p_sys->p_audio_cfg->psz_value )
 506             free( p_sys->p_audio_cfg->psz_value );
 507         free( p_sys->p_audio_cfg );
 508
 509         p_sys->p_audio_cfg = p_next;
 510     }
 511     if( p_sys->psz_aenc ) free( p_sys->psz_aenc );
 512
 513     while( p_sys->p_video_cfg != NULL )
 514     {
 515         sout_cfg_t *p_next = p_sys->p_video_cfg->p_next;
 516
 517         if( p_sys->p_video_cfg->psz_name )
 518             free( p_sys->p_video_cfg->psz_name );
 519         if( p_sys->p_video_cfg->psz_value )
 520             free( p_sys->p_video_cfg->psz_value );
 521         free( p_sys->p_video_cfg );
 522
 523         p_sys->p_video_cfg = p_next;
 524     }
 525     if( p_sys->psz_venc ) free( p_sys->psz_venc );
 526
 527     while( p_sys->p_spu_cfg != NULL )
 528     {
 529         sout_cfg_t *p_next = p_sys->p_spu_cfg->p_next;
 530
 531         if( p_sys->p_spu_cfg->psz_name )
 532             free( p_sys->p_spu_cfg->psz_name );
 533         if( p_sys->p_spu_cfg->psz_value )
 534             free( p_sys->p_spu_cfg->psz_value );
 535         free( p_sys->p_spu_cfg );
 536
 537         p_sys->p_spu_cfg = p_next;
 538     }
 539     if( p_sys->psz_senc ) free( p_sys->psz_senc );
 540
 541     if( p_sys->p_spu ) spu_Destroy( p_sys->p_spu );
 542
 543     vlc_object_destroy( p_sys );
 544 }
 545
 546 struct sout_stream_id_t
 547 {
 548     vlc_fourcc_t  b_transcode;
 549
 550     /* id of the out stream */
 551     void *id;
 552
 553     /* Decoder */
 554     decoder_t       *p_decoder;
 555
 556     /* Filters */
 557     filter_t        *pp_filter[10];
 558     int             i_filter;
 559
 560     /* Encoder */
 561     encoder_t       *p_encoder;
 562
 563     /* Sync */
 564     date_t          interpolated_pts;
 565 };
 566
 567
 568 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
 569 {
 570     sout_stream_sys_t *p_sys = p_stream->p_sys;
 571     sout_stream_id_t *id;
 572
 573     id = malloc( sizeof( sout_stream_id_t ) );
 574     memset( id, 0, sizeof(sout_stream_id_t) );
 575
 576     id->id = NULL;
 577     id->p_decoder = NULL;
 578     id->p_encoder = NULL;
 579
 580     /* Create decoder object */
 581     id->p_decoder = vlc_object_create( p_stream, VLC_OBJECT_DECODER );
 582     if( !id->p_decoder )
 583     {
 584         msg_Err( p_stream, "out of memory" );
 585         goto error;
 586     }
 587     vlc_object_attach( id->p_decoder, p_stream );
 588     id->p_decoder->p_module = NULL;
 589     id->p_decoder->fmt_in = *p_fmt;
 590     id->p_decoder->fmt_out = *p_fmt;
 591     id->p_decoder->fmt_out.i_extra = 0;
 592     id->p_decoder->fmt_out.p_extra = 0;
 593     id->p_decoder->b_pace_control = VLC_TRUE;
 594
 595     /* Create encoder object */
 596     id->p_encoder = vlc_object_create( p_stream, VLC_OBJECT_ENCODER );
 597     if( !id->p_encoder )
 598     {
 599         msg_Err( p_stream, "out of memory" );
 600         goto error;
 601     }
 602     vlc_object_attach( id->p_encoder, p_stream );
 603     id->p_encoder->p_module = NULL;
 604
 605     /* Create destination format */
 606     es_format_Init( &id->p_encoder->fmt_out, p_fmt->i_cat, 0 );
 607     id->p_encoder->fmt_out.i_id    = p_fmt->i_id;
 608     id->p_encoder->fmt_out.i_group = p_fmt->i_group;
 609     if( p_fmt->psz_language )
 610         id->p_encoder->fmt_out.psz_language = strdup( p_fmt->psz_language );
 611
 612     if( p_fmt->i_cat == AUDIO_ES && (p_sys->i_acodec || p_sys->psz_aenc) )
 613     {
 614         msg_Dbg( p_stream,
 615                  "creating audio transcoding from fcc=`%4.4s' to fcc=`%4.4s'",
 616                  (char*)&p_fmt->i_codec, (char*)&p_sys->i_acodec );
 617
 618         /* Complete destination format */
 619         id->p_encoder->fmt_out.i_codec = p_sys->i_acodec;
 620         id->p_encoder->fmt_out.audio.i_rate = p_sys->i_sample_rate > 0 ?
 621             p_sys->i_sample_rate : (int)p_fmt->audio.i_rate;
 622         id->p_encoder->fmt_out.audio.i_channels = p_sys->i_channels > 0 ?
 623             p_sys->i_channels : p_fmt->audio.i_channels;
 624         id->p_encoder->fmt_out.i_bitrate = p_sys->i_abitrate;
 625         id->p_encoder->fmt_out.audio.i_bitspersample =
 626             p_fmt->audio.i_bitspersample;
 627
 628         /* Build decoder -> filter -> encoder chain */
 629         if( transcode_audio_new( p_stream, id ) )
 630         {
 631             msg_Err( p_stream, "cannot create audio chain" );
 632             goto error;
 633         }
 634
 635         /* Open output stream */
 636         id->id = p_sys->p_out->pf_add( p_sys->p_out, &id->p_encoder->fmt_out );
 637         id->b_transcode = VLC_TRUE;
 638
 639         if( !id->id ) goto error;
 640
 641         date_Init( &id->interpolated_pts, p_fmt->audio.i_rate, 1 );
 642     }
 643     else if( p_fmt->i_cat == VIDEO_ES &&
 644              (p_sys->i_vcodec != 0 || p_sys->psz_venc) )
 645     {
 646         msg_Dbg( p_stream,
 647                  "creating video transcoding from fcc=`%4.4s' to fcc=`%4.4s'",
 648                  (char*)&p_fmt->i_codec, (char*)&p_sys->i_vcodec );
 649
 650         /* Complete destination format */
 651         id->p_encoder->fmt_out.i_codec = p_sys->i_vcodec;
 652         id->p_encoder->fmt_out.video.i_width  = p_sys->i_width;
 653         id->p_encoder->fmt_out.video.i_height = p_sys->i_height;
 654         id->p_encoder->fmt_out.i_bitrate = p_sys->i_vbitrate;
 655
 656         /* Build decoder -> filter -> encoder chain */
 657         if( transcode_video_new( p_stream, id ) )
 658         {
 659             msg_Err( p_stream, "cannot create video chain" );
 660             goto error;
 661         }
 662
 663         /* Stream will be added later on because we don't know
 664          * all the characteristics of the decoded stream yet */
 665         id->b_transcode = VLC_TRUE;
 666
 667         if( p_sys->f_fps > 0 )
 668         {
 669             id->p_encoder->fmt_out.video.i_frame_rate = p_sys->f_fps * 1000;
 670             id->p_encoder->fmt_out.video.i_frame_rate_base = 1000;
 671         }
 672     }
 673     else if( p_fmt->i_cat == SPU_ES && (p_sys->i_scodec || p_sys->psz_senc) )
 674     {
 675         msg_Dbg( p_stream, "creating subtitles transcoding from fcc=`%4.4s' "
 676                  "to fcc=`%4.4s'", (char*)&p_fmt->i_codec,
 677                  (char*)&p_sys->i_scodec );
 678
 679         /* Complete destination format */
 680         id->p_encoder->fmt_out.i_codec = p_sys->i_scodec;
 681
 682         /* build decoder -> filter -> encoder */
 683         if( transcode_spu_new( p_stream, id ) )
 684         {
 685             msg_Err( p_stream, "cannot create subtitles chain" );
 686             goto error;
 687         }
 688
 689         /* open output stream */
 690         id->id = p_sys->p_out->pf_add( p_sys->p_out, &id->p_encoder->fmt_out );
 691         id->b_transcode = VLC_TRUE;
 692
 693         if( !id->id ) goto error;
 694     }
 695     else if( p_fmt->i_cat == SPU_ES && p_sys->b_soverlay )
 696     {
 697         msg_Dbg( p_stream, "subtitles (fcc=`%4.4s') overlaying",
 698                  (char*)&p_fmt->i_codec );
 699
 700         id->b_transcode = VLC_TRUE;
 701
 702         /* Build decoder -> filter -> overlaying chain */
 703         if( transcode_spu_new( p_stream, id ) )
 704         {
 705             msg_Err( p_stream, "cannot create subtitles chain" );
 706             goto error;
 707         }
 708     }
 709     else
 710     {
 711         msg_Dbg( p_stream, "not transcoding a stream (fcc=`%4.4s')",
 712                  (char*)&p_fmt->i_codec );
 713         id->id = p_sys->p_out->pf_add( p_sys->p_out, p_fmt );
 714         id->b_transcode = VLC_FALSE;
 715
 716         if( !id->id ) goto error;
 717     }
 718
 719     return id;
 720
 721  error:
 722     if( id->p_decoder )
 723     {
 724         vlc_object_detach( id->p_decoder );
 725         vlc_object_destroy( id->p_decoder );
 726     }
 727
 728     if( id->p_encoder )
 729     {
 730         vlc_object_detach( id->p_encoder );
 731         vlc_object_destroy( id->p_encoder );
 732     }
 733
 734     free( id );
 735     return NULL;
 736 }
 737
 738 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
 739 {
 740     sout_stream_sys_t *p_sys = p_stream->p_sys;
 741
 742     if( id->b_transcode )
 743     {
 744         switch( id->p_decoder->fmt_in.i_cat )
 745         {
 746         case AUDIO_ES:
 747             transcode_audio_close( p_stream, id );
 748             break;
 749         case VIDEO_ES:
 750             transcode_video_close( p_stream, id );
 751             break;
 752         case SPU_ES:
 753             transcode_spu_close( p_stream, id );
 754             break;
 755         }
 756     }
 757
 758     if( id->id ) p_sys->p_out->pf_del( p_sys->p_out, id->id );
 759
 760     if( id->p_decoder )
 761     {
 762         vlc_object_detach( id->p_decoder );
 763         vlc_object_destroy( id->p_decoder );
 764     }
 765
 766     if( id->p_encoder )
 767     {
 768         vlc_object_detach( id->p_encoder );
 769         vlc_object_destroy( id->p_encoder );
 770     }
 771
 772     free( id );
 773
 774     return VLC_SUCCESS;
 775 }
 776
 777 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
 778                  block_t *p_buffer )
 779 {
 780     sout_stream_sys_t *p_sys = p_stream->p_sys;
 781     block_t *p_out;
 782
 783     if( !id->b_transcode && id->id )
 784     {
 785         if( p_sys->b_master_sync && p_sys->i_master_drift )
 786         {
 787             if( p_buffer->i_dts > 0 )
 788             {
 789                 p_buffer->i_dts -= p_sys->i_master_drift;
 790                 if( p_buffer->i_dts < 0 )
 791                 {
 792                     block_Release( p_buffer );
 793                     return VLC_EGENERIC;
 794                 }
 795             }
 796             if( p_buffer->i_pts > 0 )
 797             {
 798                 p_buffer->i_pts -= p_sys->i_master_drift;
 799                 if( p_buffer->i_pts < 0 )
 800                 {
 801                     block_Release( p_buffer );
 802                     return VLC_EGENERIC;
 803                 }
 804             }
 805         }
 806
 807         return p_sys->p_out->pf_send( p_sys->p_out, id->id, p_buffer );
 808     }
 809     else if( !id->b_transcode )
 810     {
 811         block_Release( p_buffer );
 812         return VLC_EGENERIC;
 813     }
 814
 815     switch( id->p_decoder->fmt_in.i_cat )
 816     {
 817     case AUDIO_ES:
 818         transcode_audio_process( p_stream, id, p_buffer, &p_out );
 819         break;
 820
 821     case VIDEO_ES:
 822         if( transcode_video_process( p_stream, id, p_buffer, &p_out )
 823             != VLC_SUCCESS )
 824         {
 825             return VLC_EGENERIC;
 826         }
 827         break;
 828
 829     case SPU_ES:
 830         if( transcode_spu_process( p_stream, id, p_buffer, &p_out ) !=
 831             VLC_SUCCESS )
 832         {
 833             return VLC_EGENERIC;
 834         }
 835         break;
 836
 837     default:
 838         block_Release( p_buffer );
 839         break;
 840     }
 841
 842     if( p_out ) return p_sys->p_out->pf_send( p_sys->p_out, id->id, p_out );
 843     return VLC_SUCCESS;
 844 }
 845
 846 /****************************************************************************
 847  * decoder reencoder part
 848  ****************************************************************************/
 849 int audio_BitsPerSample( vlc_fourcc_t i_format )
 850 {
 851     switch( i_format )
 852     {
 853     case VLC_FOURCC('u','8',' ',' '):
 854     case VLC_FOURCC('s','8',' ',' '):
 855         return 8;
 856
 857     case VLC_FOURCC('u','1','6','l'):
 858     case VLC_FOURCC('s','1','6','l'):
 859     case VLC_FOURCC('u','1','6','b'):
 860     case VLC_FOURCC('s','1','6','b'):
 861         return 16;
 862
 863     case VLC_FOURCC('u','2','4','l'):
 864     case VLC_FOURCC('s','2','4','l'):
 865     case VLC_FOURCC('u','2','4','b'):
 866     case VLC_FOURCC('s','2','4','b'):
 867         return 24;
 868
 869     case VLC_FOURCC('u','3','2','l'):
 870     case VLC_FOURCC('s','3','2','l'):
 871     case VLC_FOURCC('u','3','2','b'):
 872     case VLC_FOURCC('s','3','2','b'):
 873     case VLC_FOURCC('f','l','3','2'):
 874     case VLC_FOURCC('f','i','3','2'):
 875         return 32;
 876
 877     case VLC_FOURCC('f','l','6','4'):
 878         return 64;
 879     }
 880
 881     return 0;
 882 }
 883
 884 static int transcode_audio_new( sout_stream_t *p_stream,
 885                                 sout_stream_id_t *id )
 886 {
 887     sout_stream_sys_t *p_sys = p_stream->p_sys;
 888
 889     /*
 890      * Open decoder
 891      */
 892
 893     /* Initialization of decoder structures */
 894     id->p_decoder->pf_decode_audio = 0;
 895     id->p_decoder->pf_aout_buffer_new = audio_new_buffer;
 896     id->p_decoder->pf_aout_buffer_del = audio_del_buffer;
 897     //id->p_decoder->p_cfg = p_sys->p_video_cfg;
 898
 899     id->p_decoder->p_module =
 900         module_Need( id->p_decoder, "decoder", "$codec", 0 );
 901
 902     if( !id->p_decoder->p_module )
 903     {
 904         msg_Err( p_stream, "cannot find decoder" );
 905         return VLC_EGENERIC;
 906     }
 907     id->p_decoder->fmt_out.audio.i_bitspersample =
 908         audio_BitsPerSample( id->p_decoder->fmt_out.i_codec );
 909
 910     /*
 911      * Open encoder
 912      */
 913
 914     /* Initialization of encoder format structures */
 915     es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
 916                     id->p_decoder->fmt_out.i_codec );
 917     id->p_encoder->fmt_in.audio.i_format = id->p_decoder->fmt_out.i_codec;
 918
 919     /* Sanity check for audio channels */
 920     id->p_encoder->fmt_out.audio.i_channels =
 921         __MIN( id->p_encoder->fmt_out.audio.i_channels,
 922                id->p_decoder->fmt_out.audio.i_channels );
 923     if( id->p_decoder->fmt_out.audio.i_channels ==
 924         id->p_encoder->fmt_out.audio.i_channels )
 925         id->p_encoder->fmt_out.audio.i_physical_channels =
 926             id->p_encoder->fmt_out.audio.i_original_channels =
 927                 id->p_decoder->fmt_out.audio.i_physical_channels;
 928     else
 929         id->p_encoder->fmt_out.audio.i_physical_channels =
 930             id->p_encoder->fmt_out.audio.i_original_channels =
 931                 pi_channels_maps[id->p_encoder->fmt_out.audio.i_channels];
 932
 933     /* Initialization of encoder format structures */
 934     es_format_Init( &id->p_encoder->fmt_in, AUDIO_ES, AOUT_FMT_S16_NE );
 935     id->p_encoder->fmt_in.audio.i_format = AOUT_FMT_S16_NE;
 936     id->p_encoder->fmt_in.audio.i_rate = id->p_encoder->fmt_out.audio.i_rate;
 937     id->p_encoder->fmt_in.audio.i_physical_channels =
 938         id->p_encoder->fmt_in.audio.i_original_channels =
 939             id->p_encoder->fmt_out.audio.i_physical_channels;
 940     id->p_encoder->fmt_in.audio.i_channels =
 941         id->p_encoder->fmt_out.audio.i_channels;
 942     id->p_encoder->fmt_in.audio.i_bitspersample =
 943         audio_BitsPerSample( id->p_encoder->fmt_in.i_codec );
 944
 945     id->p_encoder->p_cfg = p_stream->p_sys->p_audio_cfg;
 946
 947     id->p_encoder->p_module =
 948         module_Need( id->p_encoder, "encoder", p_sys->psz_aenc, VLC_TRUE );
 949     if( !id->p_encoder->p_module )
 950     {
 951         msg_Err( p_stream, "cannot find encoder" );
 952         module_Unneed( id->p_decoder, id->p_decoder->p_module );
 953         id->p_decoder->p_module = 0;
 954         return VLC_EGENERIC;
 955     }
 956     id->p_encoder->fmt_in.audio.i_format = id->p_encoder->fmt_in.i_codec;
 957     id->p_encoder->fmt_in.audio.i_bitspersample =
 958         audio_BitsPerSample( id->p_encoder->fmt_in.i_codec );
 959
 960     /* Check if we need a filter for chroma conversion or resizing */
 961     if( id->p_decoder->fmt_out.i_codec !=
 962         id->p_encoder->fmt_in.i_codec )
 963     {
 964         id->pp_filter[0] =
 965             vlc_object_create( p_stream, VLC_OBJECT_FILTER );
 966         vlc_object_attach( id->pp_filter[0], p_stream );
 967
 968         id->pp_filter[0]->pf_audio_buffer_new = __block_New;
 969
 970         id->pp_filter[0]->fmt_in = id->p_decoder->fmt_out;
 971         id->pp_filter[0]->fmt_out = id->p_encoder->fmt_in;
 972         id->pp_filter[0]->p_module =
 973             module_Need( id->pp_filter[0], "audio filter2", 0, 0 );
 974         if( id->pp_filter[0]->p_module ) id->i_filter++;
 975         else
 976         {
 977             msg_Dbg( p_stream, "no audio filter found (%4.4s->%4.4s)",
 978                      (char *)&id->pp_filter[0]->fmt_in,
 979                      (char *)&id->pp_filter[0]->fmt_out );
 980             vlc_object_detach( id->pp_filter[0] );
 981             vlc_object_destroy( id->pp_filter[0] );
 982             module_Unneed( id->p_decoder, id->p_decoder->p_module );
 983             id->p_decoder->p_module = 0;
 984             module_Unneed( id->p_encoder, id->p_encoder->p_module );
 985             id->p_encoder->p_module = 0;
 986             return VLC_EGENERIC;
 987         }
 988
 989         id->pp_filter[0]->fmt_out.audio.i_bitspersample =
 990             audio_BitsPerSample( id->pp_filter[0]->fmt_out.i_codec );
 991
 992         /* Try a 2 stage conversion */
 993         if( id->pp_filter[0]->fmt_out.i_codec !=
 994             id->p_encoder->fmt_in.i_codec )
 995         {
 996             id->pp_filter[1] =
 997                 vlc_object_create( p_stream, VLC_OBJECT_FILTER );
 998             vlc_object_attach( id->pp_filter[1], p_stream );
 999
1000             id->pp_filter[1]->pf_audio_buffer_new = __block_New;
1001
1002             id->pp_filter[1]->fmt_in = id->pp_filter[0]->fmt_out;
1003             id->pp_filter[1]->fmt_out = id->p_encoder->fmt_in;
1004             id->pp_filter[1]->p_module =
1005               module_Need( id->pp_filter[1], "audio filter2", 0, 0 );
1006             if( !id->pp_filter[1]->p_module ||
1007                 id->pp_filter[1]->fmt_out.i_codec !=
1008                   id->p_encoder->fmt_in.i_codec )
1009             {
1010                 msg_Dbg( p_stream, "no audio filter found (%4.4s->%4.4s)",
1011                          (char *)&id->pp_filter[1]->fmt_in,
1012                          (char *)&id->pp_filter[1]->fmt_out );
1013                 module_Unneed( id->pp_filter[0], id->pp_filter[0]->p_module );
1014                 vlc_object_detach( id->pp_filter[0] );
1015                 vlc_object_destroy( id->pp_filter[0] );
1016                 if( id->pp_filter[1]->p_module )
1017                 module_Unneed( id->pp_filter[0], id->pp_filter[0]->p_module );
1018                 vlc_object_detach( id->pp_filter[1] );
1019                 vlc_object_destroy( id->pp_filter[1] );
1020                 module_Unneed( id->p_decoder, id->p_decoder->p_module );
1021                 id->p_decoder->p_module = 0;
1022                 module_Unneed( id->p_encoder, id->p_encoder->p_module );
1023                 id->p_encoder->p_module = 0;
1024                 return VLC_EGENERIC;
1025             }
1026             else id->i_filter++;
1027         }
1028     }
1029
1030     /* FIXME: Hack for mp3 transcoding support */
1031     if( id->p_encoder->fmt_out.i_codec == VLC_FOURCC( 'm','p','3',' ' ) )
1032         id->p_encoder->fmt_out.i_codec = VLC_FOURCC( 'm','p','g','a' );
1033
1034     return VLC_SUCCESS;
1035 }
1036
1037 static void transcode_audio_close( sout_stream_t *p_stream,
1038                                    sout_stream_id_t *id )
1039 {
1040     int i;
1041
1042     /* Close decoder */
1043     if( id->p_decoder->p_module )
1044         module_Unneed( id->p_decoder, id->p_decoder->p_module );
1045
1046     /* Close encoder */
1047     if( id->p_encoder->p_module )
1048         module_Unneed( id->p_encoder, id->p_encoder->p_module );
1049
1050     /* Close filters */
1051     for( i = 0; i < id->i_filter; i++ )
1052     {
1053         vlc_object_detach( id->pp_filter[i] );
1054         if( id->pp_filter[i]->p_module )
1055             module_Unneed( id->pp_filter[i], id->pp_filter[i]->p_module );
1056         vlc_object_destroy( id->pp_filter[i] );
1057     }
1058 }
1059
1060 static int transcode_audio_process( sout_stream_t *p_stream,
1061                                     sout_stream_id_t *id,
1062                                     block_t *in, block_t **out )
1063 {
1064     sout_stream_sys_t *p_sys = p_stream->p_sys;
1065     aout_buffer_t *p_audio_buf;
1066     block_t *p_block, *p_audio_block;
1067     int i;
1068     *out = NULL;
1069
1070     while( (p_audio_buf = id->p_decoder->pf_decode_audio( id->p_decoder,
1071                                                           &in )) )
1072     {
1073         if( p_sys->b_master_sync )
1074         {
1075             mtime_t i_dts = date_Get( &id->interpolated_pts ) + 1;
1076             p_sys->i_master_drift = p_audio_buf->start_date - i_dts;
1077             date_Increment( &id->interpolated_pts, p_audio_buf->i_nb_samples );
1078             p_audio_buf->start_date -= p_sys->i_master_drift;
1079             p_audio_buf->end_date -= p_sys->i_master_drift;
1080         }
1081
1082         p_audio_block = p_audio_buf->p_sys;
1083         p_audio_block->i_buffer = p_audio_buf->i_nb_bytes;
1084         p_audio_block->i_dts = p_audio_block->i_pts =
1085             p_audio_buf->start_date;
1086         p_audio_block->i_length = p_audio_buf->end_date -
1087             p_audio_buf->start_date;
1088         p_audio_block->i_samples = p_audio_buf->i_nb_samples;
1089
1090         /* Run filter chain */
1091         for( i = 0; i < id->i_filter; i++ )
1092         {
1093             p_audio_block =
1094                 id->pp_filter[i]->pf_audio_filter( id->pp_filter[i],
1095                                                    p_audio_block );
1096         }
1097
1098         p_audio_buf->p_buffer = p_audio_block->p_buffer;
1099         p_audio_buf->i_nb_bytes = p_audio_block->i_buffer;
1100         p_audio_buf->i_nb_samples = p_audio_block->i_samples;
1101         p_audio_buf->start_date = p_audio_block->i_dts;
1102         p_audio_buf->end_date = p_audio_block->i_dts + p_audio_block->i_length;
1103
1104         p_block = id->p_encoder->pf_encode_audio( id->p_encoder, p_audio_buf );
1105         block_ChainAppend( out, p_block );
1106         block_Release( p_audio_block );
1107         free( p_audio_buf );
1108     }
1109
1110     return VLC_SUCCESS;
1111 }
1112
1113 static void audio_release_buffer( aout_buffer_t *p_buffer )
1114 {
1115     if( p_buffer && p_buffer->p_sys ) block_Release( p_buffer->p_sys );
1116     if( p_buffer ) free( p_buffer );
1117 }
1118
1119 static aout_buffer_t *audio_new_buffer( decoder_t *p_dec, int i_samples )
1120 {
1121     aout_buffer_t *p_buffer;
1122     block_t *p_block;
1123     int i_size;
1124
1125     if( p_dec->fmt_out.audio.i_bitspersample )
1126     {
1127         i_size = i_samples * p_dec->fmt_out.audio.i_bitspersample / 8 *
1128             p_dec->fmt_out.audio.i_channels;
1129     }
1130     else if( p_dec->fmt_out.audio.i_bytes_per_frame &&
1131              p_dec->fmt_out.audio.i_frame_length )
1132     {
1133         i_size = i_samples * p_dec->fmt_out.audio.i_bytes_per_frame /
1134             p_dec->fmt_out.audio.i_frame_length;
1135     }
1136     else
1137     {
1138         i_size = i_samples * 4 * p_dec->fmt_out.audio.i_channels;
1139     }
1140
1141     p_buffer = malloc( sizeof(aout_buffer_t) );
1142     p_buffer->pf_release = audio_release_buffer;
1143     p_buffer->p_sys = p_block = block_New( p_dec, i_size );
1144
1145     p_buffer->p_buffer = p_block->p_buffer;
1146     p_buffer->i_size = p_buffer->i_nb_bytes = p_block->i_buffer;
1147     p_buffer->i_nb_samples = i_samples;
1148     p_block->i_samples = i_samples;
1149
1150     return p_buffer;
1151 }
1152
1153 static void audio_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
1154 {
1155     if( p_buffer && p_buffer->p_sys ) block_Release( p_buffer->p_sys );
1156     if( p_buffer ) free( p_buffer );
1157 }
1158
1159 /*
1160  * video
1161  */
1162 static int transcode_video_new( sout_stream_t *p_stream, sout_stream_id_t *id )
1163 {
1164     sout_stream_sys_t *p_sys = p_stream->p_sys;
1165     int i;
1166
1167     /*
1168      * Open decoder
1169      */
1170
1171     /* Initialization of decoder structures */
1172     id->p_decoder->pf_decode_video = 0;
1173     id->p_decoder->pf_vout_buffer_new = video_new_buffer_decoder;
1174     id->p_decoder->pf_vout_buffer_del = video_del_buffer_decoder;
1175     id->p_decoder->pf_picture_link    = video_link_picture_decoder;
1176     id->p_decoder->pf_picture_unlink  = video_unlink_picture_decoder;
1177     id->p_decoder->p_owner = malloc( sizeof(decoder_owner_sys_t) );
1178     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1179         id->p_decoder->p_owner->pp_pics[i] = 0;
1180     //id->p_decoder->p_cfg = p_sys->p_video_cfg;
1181
1182     id->p_decoder->p_module =
1183         module_Need( id->p_decoder, "decoder", "$codec", 0 );
1184
1185     if( !id->p_decoder->p_module )
1186     {
1187         msg_Err( p_stream, "cannot find decoder" );
1188         return VLC_EGENERIC;
1189     }
1190
1191     /*
1192      * Open encoder.
1193      * Because some info about the decoded input will only be available
1194      * once the first frame is decoded, we actually only test the availability
1195      * of the encoder here.
1196      */
1197
1198     /* Initialization of encoder format structures */
1199     es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
1200                     id->p_decoder->fmt_out.i_codec );
1201     id->p_encoder->fmt_in.video.i_chroma = id->p_decoder->fmt_out.i_codec;
1202
1203     /* The dimensions will be set properly later on.
1204      * Just put sensible values so we can test an encoder is available. */
1205     id->p_encoder->fmt_in.video.i_width =
1206         id->p_encoder->fmt_out.video.i_width ?
1207         id->p_encoder->fmt_out.video.i_width :
1208         id->p_decoder->fmt_in.video.i_width ?
1209         id->p_decoder->fmt_in.video.i_width : 16;
1210     id->p_encoder->fmt_in.video.i_height =
1211         id->p_encoder->fmt_out.video.i_height ?
1212         id->p_encoder->fmt_out.video.i_height :
1213         id->p_decoder->fmt_in.video.i_height ?
1214         id->p_decoder->fmt_in.video.i_height : 16;
1215     id->p_encoder->fmt_in.video.i_frame_rate = 25;
1216     id->p_encoder->fmt_in.video.i_frame_rate_base = 1;
1217
1218     id->p_encoder->i_threads = p_sys->i_threads;
1219     id->p_encoder->p_cfg = p_sys->p_video_cfg;
1220
1221     id->p_encoder->p_module =
1222         module_Need( id->p_encoder, "encoder", p_sys->psz_venc, VLC_TRUE );
1223     if( !id->p_encoder->p_module )
1224     {
1225         msg_Err( p_stream, "cannot find encoder" );
1226         module_Unneed( id->p_decoder, id->p_decoder->p_module );
1227         id->p_decoder->p_module = 0;
1228         return VLC_EGENERIC;
1229     }
1230
1231     /* Close the encoder.
1232      * We'll open it only when we have the first frame. */
1233     module_Unneed( id->p_encoder, id->p_encoder->p_module );
1234     id->p_encoder->p_module = NULL;
1235
1236     if( p_sys->i_threads >= 1 )
1237     {
1238         p_sys->id_video = id;
1239         vlc_mutex_init( p_stream, &p_sys->lock_out );
1240         vlc_cond_init( p_stream, &p_sys->cond );
1241         memset( p_sys->pp_pics, 0, sizeof(p_sys->pp_pics) );
1242         p_sys->i_first_pic = 0;
1243         p_sys->i_last_pic = 0;
1244         p_sys->p_buffers = NULL;
1245         p_sys->b_die = p_sys->b_error = 0;
1246         if( vlc_thread_create( p_sys, "encoder", EncoderThread,
1247                                VLC_THREAD_PRIORITY_VIDEO, VLC_FALSE ) )
1248         {
1249             msg_Err( p_stream, "cannot spawn encoder thread" );
1250             module_Unneed( id->p_decoder, id->p_decoder->p_module );
1251             id->p_decoder->p_module = 0;
1252             return VLC_EGENERIC;
1253         }
1254     }
1255
1256     date_Set( &id->interpolated_pts, 0 );
1257
1258     return VLC_SUCCESS;
1259 }
1260
1261 static int transcode_video_encoder_open( sout_stream_t *p_stream,
1262                                          sout_stream_id_t *id )
1263 {
1264     sout_stream_sys_t *p_sys = p_stream->p_sys;
1265
1266     /* Hack because of the copy packetizer which can fail to detect the
1267      * proper size (which forces us to wait until the 1st frame
1268      * is decoded) */
1269     int i_width = id->p_decoder->fmt_out.video.i_width -
1270         p_sys->i_crop_left - p_sys->i_crop_right;
1271     int i_height = id->p_decoder->fmt_out.video.i_height -
1272         p_sys->i_crop_top - p_sys->i_crop_bottom;
1273
1274     if( id->p_encoder->fmt_out.video.i_width <= 0 &&
1275         id->p_encoder->fmt_out.video.i_height <= 0 && p_sys->f_scale )
1276     {
1277         /* Apply the scaling */
1278         id->p_encoder->fmt_out.video.i_width = i_width * p_sys->f_scale;
1279         id->p_encoder->fmt_out.video.i_height = i_height * p_sys->f_scale;
1280     }
1281     else if( id->p_encoder->fmt_out.video.i_width > 0 &&
1282              id->p_encoder->fmt_out.video.i_height <= 0 )
1283     {
1284         id->p_encoder->fmt_out.video.i_height =
1285             id->p_encoder->fmt_out.video.i_width / (double)i_width * i_height;
1286     }
1287     else if( id->p_encoder->fmt_out.video.i_width <= 0 &&
1288              id->p_encoder->fmt_out.video.i_height > 0 )
1289     {
1290         id->p_encoder->fmt_out.video.i_width =
1291             id->p_encoder->fmt_out.video.i_height / (double)i_height * i_width;
1292     }
1293
1294     /* Make sure the size is at least a multiple of 2 */
1295     id->p_encoder->fmt_out.video.i_width =
1296         (id->p_encoder->fmt_out.video.i_width + 1) >> 1 << 1;
1297     id->p_encoder->fmt_out.video.i_height =
1298         (id->p_encoder->fmt_out.video.i_height + 1) >> 1 << 1;
1299
1300     id->p_encoder->fmt_in.video.i_width =
1301         id->p_encoder->fmt_out.video.i_width;
1302     id->p_encoder->fmt_in.video.i_height =
1303         id->p_encoder->fmt_out.video.i_height;
1304
1305     if( !id->p_encoder->fmt_out.video.i_frame_rate ||
1306         !id->p_encoder->fmt_out.video.i_frame_rate_base )
1307     {
1308         if( id->p_decoder->fmt_out.video.i_frame_rate &&
1309             id->p_decoder->fmt_out.video.i_frame_rate_base )
1310         {
1311             id->p_encoder->fmt_out.video.i_frame_rate =
1312                 id->p_decoder->fmt_out.video.i_frame_rate;
1313             id->p_encoder->fmt_out.video.i_frame_rate_base =
1314                 id->p_decoder->fmt_out.video.i_frame_rate_base;
1315         }
1316         else
1317         {
1318             /* Pick a sensible default value */
1319             id->p_encoder->fmt_out.video.i_frame_rate = 25;
1320             id->p_encoder->fmt_out.video.i_frame_rate_base = 1;
1321         }
1322     }
1323
1324     id->p_encoder->fmt_in.video.i_frame_rate =
1325         id->p_encoder->fmt_out.video.i_frame_rate;
1326     id->p_encoder->fmt_in.video.i_frame_rate_base =
1327         id->p_encoder->fmt_out.video.i_frame_rate_base;
1328
1329     date_Init( &id->interpolated_pts,
1330                id->p_encoder->fmt_out.video.i_frame_rate,
1331                id->p_encoder->fmt_out.video.i_frame_rate_base );
1332
1333     /* Check whether a particular aspect ratio was requested */
1334     if( !id->p_encoder->fmt_out.video.i_aspect )
1335     {
1336         id->p_encoder->fmt_out.video.i_aspect =
1337             id->p_decoder->fmt_out.video.i_aspect;
1338     }
1339     id->p_encoder->fmt_in.video.i_aspect =
1340         id->p_encoder->fmt_out.video.i_aspect;
1341
1342     id->p_encoder->p_module =
1343         module_Need( id->p_encoder, "encoder", p_sys->psz_venc, VLC_TRUE );
1344     if( !id->p_encoder->p_module )
1345     {
1346         msg_Err( p_stream, "cannot find encoder" );
1347         return VLC_EGENERIC;
1348     }
1349
1350     id->p_encoder->fmt_in.video.i_chroma = id->p_encoder->fmt_in.i_codec;
1351
1352     /* Hack for mp2v/mp1v transcoding support */
1353     if( id->p_encoder->fmt_out.i_codec == VLC_FOURCC('m','p','1','v') ||
1354         id->p_encoder->fmt_out.i_codec == VLC_FOURCC('m','p','2','v') )
1355     {
1356         id->p_encoder->fmt_out.i_codec = VLC_FOURCC('m','p','g','v');
1357     }
1358
1359     id->id = p_stream->p_sys->p_out->pf_add( p_stream->p_sys->p_out,
1360                                              &id->p_encoder->fmt_out );
1361     if( !id->id )
1362     {
1363         msg_Err( p_stream, "cannot add this stream" );
1364         return VLC_EGENERIC;
1365     }
1366
1367     return VLC_SUCCESS;
1368 }
1369
1370 static void transcode_video_close( sout_stream_t *p_stream,
1371                                    sout_stream_id_t *id )
1372 {
1373     int i, j;
1374
1375     if( p_stream->p_sys->i_threads >= 1 )
1376     {
1377         vlc_mutex_lock( &p_stream->p_sys->lock_out );
1378         p_stream->p_sys->b_die = 1;
1379         vlc_cond_signal( &p_stream->p_sys->cond );
1380         vlc_mutex_unlock( &p_stream->p_sys->lock_out );
1381         vlc_thread_join( p_stream->p_sys );
1382         vlc_mutex_destroy( &p_stream->p_sys->lock_out );
1383         vlc_cond_destroy( &p_stream->p_sys->cond );
1384     }
1385
1386     /* Close decoder */
1387     if( id->p_decoder->p_module )
1388         module_Unneed( id->p_decoder, id->p_decoder->p_module );
1389
1390     if( id->p_decoder->p_owner )
1391     {
1392         /* Clean-up pictures ring buffer */
1393         for( i = 0; i < PICTURE_RING_SIZE; i++ )
1394         {
1395             if( id->p_decoder->p_owner->pp_pics[i] )
1396                 video_del_buffer( VLC_OBJECT(id->p_decoder),
1397                                   id->p_decoder->p_owner->pp_pics[i] );
1398         }
1399         free( id->p_decoder->p_owner );
1400     }
1401
1402     /* Close encoder */
1403     if( id->p_encoder->p_module )
1404         module_Unneed( id->p_encoder, id->p_encoder->p_module );
1405
1406     /* Close filters */
1407     for( i = 0; i < id->i_filter; i++ )
1408     {
1409         vlc_object_detach( id->pp_filter[i] );
1410         if( id->pp_filter[i]->p_module )
1411             module_Unneed( id->pp_filter[i], id->pp_filter[i]->p_module );
1412
1413         /* Clean-up pictures ring buffer */
1414         for( j = 0; j < PICTURE_RING_SIZE; j++ )
1415         {
1416             if( id->pp_filter[i]->p_owner->pp_pics[j] )
1417                 video_del_buffer( VLC_OBJECT(id->pp_filter[i]),
1418                                   id->pp_filter[i]->p_owner->pp_pics[j] );
1419         }
1420         free( id->pp_filter[i]->p_owner );
1421
1422         vlc_object_destroy( id->pp_filter[i] );
1423     }
1424 }
1425
1426 static int transcode_video_process( sout_stream_t *p_stream,
1427                                     sout_stream_id_t *id,
1428                                     block_t *in, block_t **out )
1429 {
1430     sout_stream_sys_t *p_sys = p_stream->p_sys;
1431     int i_duplicate = 1, i;
1432     picture_t *p_pic;
1433     *out = NULL;
1434
1435     while( (p_pic = id->p_decoder->pf_decode_video( id->p_decoder, &in )) )
1436     {
1437         subpicture_t *p_subpic = 0;
1438
1439         if( p_sys->b_master_sync )
1440         {
1441             mtime_t i_video_drift;
1442             mtime_t i_master_drift = p_sys->i_master_drift;
1443             mtime_t i_pts;
1444
1445             if( !i_master_drift )
1446             {
1447                 /* No audio track ? */
1448                 p_sys->i_master_drift = i_master_drift = p_pic->date;
1449             }
1450
1451             i_pts = date_Get( &id->interpolated_pts ) + 1;
1452             i_video_drift = p_pic->date - i_pts;
1453             i_duplicate = 1;
1454
1455             /* Set the pts of the frame being encoded */
1456             p_pic->date = i_pts;
1457
1458             if( i_video_drift < i_master_drift - 50000 )
1459             {
1460 #if 0
1461                 msg_Dbg( p_stream, "dropping frame (%i)",
1462                          (int)(i_video_drift - i_master_drift) );
1463 #endif
1464                 p_pic->pf_release( p_pic );
1465                 return VLC_EGENERIC;
1466             }
1467             else if( i_video_drift > i_master_drift + 50000 )
1468             {
1469 #if 0
1470                 msg_Dbg( p_stream, "adding frame (%i)",
1471                          (int)(i_video_drift - i_master_drift) );
1472 #endif
1473                 i_duplicate = 2;
1474             }
1475         }
1476
1477         if( !id->p_encoder->p_module )
1478         {
1479             if( transcode_video_encoder_open( p_stream, id ) != VLC_SUCCESS )
1480             {
1481                 transcode_video_close( p_stream, id );
1482                 id->b_transcode = VLC_FALSE;
1483                 p_pic->pf_release( p_pic );
1484                 return VLC_EGENERIC;
1485             }
1486
1487             /* Deinterlace */
1488             if( p_stream->p_sys->b_deinterlace )
1489             {
1490                 id->pp_filter[id->i_filter] =
1491                     vlc_object_create( p_stream, VLC_OBJECT_FILTER );
1492                 vlc_object_attach( id->pp_filter[id->i_filter], p_stream );
1493
1494                 id->pp_filter[id->i_filter]->pf_vout_buffer_new =
1495                     video_new_buffer_filter;
1496                 id->pp_filter[id->i_filter]->pf_vout_buffer_del =
1497                     video_del_buffer_filter;
1498
1499                 id->pp_filter[id->i_filter]->fmt_in = id->p_decoder->fmt_out;
1500                 id->pp_filter[id->i_filter]->fmt_out = id->p_decoder->fmt_out;
1501                 id->pp_filter[id->i_filter]->p_module =
1502                     module_Need( id->pp_filter[id->i_filter],
1503                                  "video filter2", "deinterlace", 0 );
1504                 if( id->pp_filter[id->i_filter]->p_module )
1505                 {
1506                     id->pp_filter[id->i_filter]->p_owner =
1507                         malloc( sizeof(filter_owner_sys_t) );
1508                     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1509                         id->pp_filter[id->i_filter]->p_owner->pp_pics[i] = 0;
1510
1511                     id->i_filter++;
1512                 }
1513                 else
1514                 {
1515                     msg_Dbg( p_stream, "no video filter found" );
1516                     vlc_object_detach( id->pp_filter[id->i_filter] );
1517                     vlc_object_destroy( id->pp_filter[id->i_filter] );
1518                 }
1519             }
1520
1521             /* Check if we need a filter for chroma conversion or resizing */
1522             if( id->p_decoder->fmt_out.video.i_chroma !=
1523                 id->p_encoder->fmt_in.video.i_chroma ||
1524                 id->p_decoder->fmt_out.video.i_width !=
1525                 id->p_encoder->fmt_out.video.i_width ||
1526                 id->p_decoder->fmt_out.video.i_height !=
1527                 id->p_encoder->fmt_out.video.i_height ||
1528                 p_sys->i_crop_top > 0 || p_sys->i_crop_bottom > 0 ||
1529                 p_sys->i_crop_left > 0 || p_sys->i_crop_right > 0 )
1530             {
1531                 id->pp_filter[id->i_filter] =
1532                     vlc_object_create( p_stream, VLC_OBJECT_FILTER );
1533                 vlc_object_attach( id->pp_filter[id->i_filter], p_stream );
1534
1535                 id->pp_filter[id->i_filter]->pf_vout_buffer_new =
1536                     video_new_buffer_filter;
1537                 id->pp_filter[id->i_filter]->pf_vout_buffer_del =
1538                     video_del_buffer_filter;
1539
1540                 id->pp_filter[id->i_filter]->fmt_in = id->p_decoder->fmt_out;
1541                 id->pp_filter[id->i_filter]->fmt_out = id->p_encoder->fmt_in;
1542                 id->pp_filter[id->i_filter]->p_module =
1543                     module_Need( id->pp_filter[id->i_filter],
1544                                  "video filter2", 0, 0 );
1545                 if( id->pp_filter[id->i_filter]->p_module )
1546                 {
1547                     id->pp_filter[id->i_filter]->p_owner =
1548                         malloc( sizeof(filter_owner_sys_t) );
1549                     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1550                         id->pp_filter[id->i_filter]->p_owner->pp_pics[i] = 0;
1551
1552                     id->i_filter++;
1553                 }
1554                 else
1555                 {
1556                     msg_Dbg( p_stream, "no video filter found" );
1557                     vlc_object_detach( id->pp_filter[id->i_filter] );
1558                     vlc_object_destroy( id->pp_filter[id->i_filter] );
1559
1560                     transcode_video_close( p_stream, id );
1561                     id->b_transcode = VLC_FALSE;
1562                     p_pic->pf_release( p_pic );
1563                     return VLC_EGENERIC;
1564                 }
1565             }
1566         }
1567
1568         /* Run filter chain */
1569         for( i = 0; i < id->i_filter; i++ )
1570         {
1571             p_pic = id->pp_filter[i]->pf_video_filter(id->pp_filter[i], p_pic);
1572         }
1573
1574         /*
1575          * Encoding
1576          */
1577
1578         /* Check if we have a subpicture to overlay */
1579         if( p_sys->p_spu )
1580         {
1581             p_subpic = spu_SortSubpictures( p_sys->p_spu, p_pic->date );
1582             /* TODO: get another pic */
1583         }
1584
1585         /* Overlay subpicture */
1586         if( p_subpic )
1587         {
1588             int i_scale_width, i_scale_height;
1589             video_format_t *p_fmt;
1590
1591             i_scale_width = id->p_encoder->fmt_in.video.i_width * 1000 /
1592                 id->p_decoder->fmt_out.video.i_width;
1593             i_scale_height = id->p_encoder->fmt_in.video.i_height * 1000 /
1594                 id->p_decoder->fmt_out.video.i_height;
1595
1596             if( p_pic->i_refcount && !id->i_filter )
1597             {
1598                 /* We can't modify the picture, we need to duplicate it */
1599                 picture_t *p_tmp = video_new_buffer_decoder( id->p_decoder );
1600                 if( p_tmp )
1601                 {
1602                     vout_CopyPicture( p_stream, p_tmp, p_pic );
1603                     p_pic->pf_release( p_pic );
1604                     p_pic = p_tmp;
1605                 }
1606             }
1607
1608             if( id->i_filter )
1609                 p_fmt = &id->pp_filter[id->i_filter -1]->fmt_out.video;
1610             else
1611                 p_fmt = &id->p_decoder->fmt_out.video;
1612
1613             /* FIXME (shouldn't have to be done here) */
1614             p_fmt->i_sar_num = p_fmt->i_aspect *
1615                 p_fmt->i_height / p_fmt->i_width;
1616             p_fmt->i_sar_den = VOUT_ASPECT_FACTOR;
1617
1618             spu_RenderSubpictures( p_sys->p_spu, p_fmt, p_pic, p_pic, p_subpic,
1619                                    i_scale_width, i_scale_height );
1620         }
1621
1622         if( p_sys->i_threads >= 1 )
1623         {
1624             vlc_mutex_lock( &p_sys->lock_out );
1625             p_sys->pp_pics[p_sys->i_last_pic++] = p_pic;
1626             p_sys->i_last_pic %= PICTURE_RING_SIZE;
1627             *out = p_sys->p_buffers;
1628             p_sys->p_buffers = NULL;
1629             vlc_cond_signal( &p_sys->cond );
1630             vlc_mutex_unlock( &p_sys->lock_out );
1631         }
1632         else
1633         {
1634             block_t *p_block;
1635             p_block = id->p_encoder->pf_encode_video( id->p_encoder, p_pic );
1636             block_ChainAppend( out, p_block );
1637
1638             if( p_sys->b_master_sync )
1639                 date_Increment( &id->interpolated_pts, 1 );
1640
1641             if( p_sys->b_master_sync && i_duplicate > 1 )
1642             {
1643                 mtime_t i_pts = date_Get( &id->interpolated_pts ) + 1;
1644                 date_Increment( &id->interpolated_pts, 1 );
1645                 p_pic->date = i_pts;
1646                 p_block = id->p_encoder->pf_encode_video(id->p_encoder, p_pic);
1647                 block_ChainAppend( out, p_block );
1648             }
1649
1650             p_pic->pf_release( p_pic );
1651         }
1652     }
1653
1654     return VLC_SUCCESS;
1655 }
1656
1657 static int EncoderThread( sout_stream_sys_t *p_sys )
1658 {
1659     sout_stream_id_t *id = p_sys->id_video;
1660     picture_t *p_pic;
1661     int i_plane;
1662
1663     while( !p_sys->b_die && !p_sys->b_error )
1664     {
1665         block_t *p_block;
1666
1667         vlc_mutex_lock( &p_sys->lock_out );
1668         while( p_sys->i_last_pic == p_sys->i_first_pic )
1669         {
1670             vlc_cond_wait( &p_sys->cond, &p_sys->lock_out );
1671             if( p_sys->b_die || p_sys->b_error ) break;
1672         }
1673         if( p_sys->b_die || p_sys->b_error )
1674         {
1675             vlc_mutex_unlock( &p_sys->lock_out );
1676             break;
1677         }
1678
1679         p_pic = p_sys->pp_pics[p_sys->i_first_pic++];
1680         p_sys->i_first_pic %= PICTURE_RING_SIZE;
1681         vlc_mutex_unlock( &p_sys->lock_out );
1682
1683         p_block = id->p_encoder->pf_encode_video( id->p_encoder, p_pic );
1684         vlc_mutex_lock( &p_sys->lock_out );
1685         block_ChainAppend( &p_sys->p_buffers, p_block );
1686         vlc_mutex_unlock( &p_sys->lock_out );
1687
1688         for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
1689         {
1690             free( p_pic->p[i_plane].p_pixels );
1691         }
1692         free( p_pic );
1693     }
1694
1695     while( p_sys->i_last_pic != p_sys->i_first_pic )
1696     {
1697         p_pic = p_sys->pp_pics[p_sys->i_first_pic++];
1698         p_sys->i_first_pic %= PICTURE_RING_SIZE;
1699
1700         for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
1701         {
1702             free( p_pic->p[i_plane].p_pixels );
1703         }
1704         free( p_pic );
1705     }
1706
1707     block_ChainRelease( p_sys->p_buffers );
1708
1709     return 0;
1710 }
1711
1712 struct picture_sys_t
1713 {
1714     vlc_object_t *p_owner;
1715 };
1716
1717 static void video_release_buffer( picture_t *p_pic )
1718 {
1719     if( p_pic && !p_pic->i_refcount && p_pic->pf_release && p_pic->p_sys )
1720     {
1721         video_del_buffer_decoder( (decoder_t *)p_pic->p_sys->p_owner, p_pic );
1722     }
1723     else if( p_pic && p_pic->i_refcount > 0 ) p_pic->i_refcount--;
1724 }
1725
1726 static picture_t *video_new_buffer( vlc_object_t *p_this, picture_t **pp_ring )
1727 {
1728     decoder_t *p_dec = (decoder_t *)p_this;
1729     picture_t *p_pic;
1730     int i;
1731
1732     /* Find an empty space in the picture ring buffer */
1733     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1734     {
1735         if( pp_ring[i] != 0 && pp_ring[i]->i_status == DESTROYED_PICTURE )
1736         {
1737             pp_ring[i]->i_status = RESERVED_PICTURE;
1738             return pp_ring[i];
1739         }
1740     }
1741     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1742     {
1743         if( pp_ring[i] == 0 ) break;
1744     }
1745
1746     if( i == PICTURE_RING_SIZE )
1747     {
1748         msg_Err( p_this, "decoder/filter is leaking pictures, "
1749                  "resetting its ring buffer" );
1750
1751         for( i = 0; i < PICTURE_RING_SIZE; i++ )
1752         {
1753             pp_ring[i]->pf_release( pp_ring[i] );
1754         }
1755
1756         i = 0;
1757     }
1758
1759     p_pic = malloc( sizeof(picture_t) );
1760     p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
1761     vout_AllocatePicture( VLC_OBJECT(p_dec), p_pic,
1762                           p_dec->fmt_out.video.i_chroma,
1763                           p_dec->fmt_out.video.i_width,
1764                           p_dec->fmt_out.video.i_height,
1765                           p_dec->fmt_out.video.i_aspect );
1766
1767     if( !p_pic->i_planes )
1768     {
1769         free( p_pic );
1770         return 0;
1771     }
1772
1773     p_pic->pf_release = video_release_buffer;
1774     p_pic->p_sys = malloc( sizeof(picture_sys_t) );
1775     p_pic->p_sys->p_owner = p_this;
1776     p_pic->i_status = RESERVED_PICTURE;
1777
1778     pp_ring[i] = p_pic;
1779
1780     return p_pic;
1781 }
1782
1783 static picture_t *video_new_buffer_decoder( decoder_t *p_dec )
1784 {
1785     return video_new_buffer( VLC_OBJECT(p_dec),
1786                              p_dec->p_owner->pp_pics );
1787 }
1788
1789 static picture_t *video_new_buffer_filter( filter_t *p_filter )
1790 {
1791     return video_new_buffer( VLC_OBJECT(p_filter),
1792                              p_filter->p_owner->pp_pics );
1793 }
1794
1795 static void video_del_buffer( vlc_object_t *p_this, picture_t *p_pic )
1796 {
1797     if( p_pic && p_pic->p_data_orig ) free( p_pic->p_data_orig );
1798     if( p_pic && p_pic->p_sys ) free( p_pic->p_sys );
1799     if( p_pic ) free( p_pic );
1800 }
1801
1802 static void video_del_buffer_decoder( decoder_t *p_decoder, picture_t *p_pic )
1803 {
1804     p_pic->i_refcount = 0;
1805     p_pic->i_status = DESTROYED_PICTURE;
1806 }
1807
1808 static void video_del_buffer_filter( filter_t *p_filter, picture_t *p_pic )
1809 {
1810     p_pic->i_refcount = 0;
1811     p_pic->i_status = DESTROYED_PICTURE;
1812 }
1813
1814 static void video_link_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
1815 {
1816     p_pic->i_refcount++;
1817 }
1818
1819 static void video_unlink_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
1820 {
1821     video_release_buffer( p_pic );
1822 }
1823
1824 /*
1825  * SPU
1826  */
1827 static subpicture_t *spu_new_buffer( decoder_t * );
1828 static void spu_del_buffer( decoder_t *, subpicture_t * );
1829
1830 static int transcode_spu_new( sout_stream_t *p_stream, sout_stream_id_t *id )
1831 {
1832     sout_stream_sys_t *p_sys = p_stream->p_sys;
1833
1834     /*
1835      * Open decoder
1836      */
1837
1838     /* Initialization of decoder structures */
1839     id->p_decoder->pf_spu_buffer_new = spu_new_buffer;
1840     id->p_decoder->pf_spu_buffer_del = spu_del_buffer;
1841     id->p_decoder->p_owner = (decoder_owner_sys_t *)p_stream;
1842     //id->p_decoder->p_cfg = p_sys->p_spu_cfg;
1843
1844     id->p_decoder->p_module =
1845         module_Need( id->p_decoder, "decoder", "$codec", 0 );
1846
1847     if( !id->p_decoder->p_module )
1848     {
1849         msg_Err( p_stream, "cannot find decoder" );
1850         return VLC_EGENERIC;
1851     }
1852
1853     if( !p_sys->b_soverlay )
1854     {
1855         /*
1856          * Open encoder
1857          */
1858
1859         /* Initialization of encoder format structures */
1860         es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
1861                         id->p_decoder->fmt_in.i_codec );
1862
1863         id->p_encoder->p_cfg = p_sys->p_spu_cfg;
1864
1865         id->p_encoder->p_module =
1866             module_Need( id->p_encoder, "encoder", p_sys->psz_senc, VLC_TRUE );
1867
1868         if( !id->p_encoder->p_module )
1869         {
1870             module_Unneed( id->p_decoder, id->p_decoder->p_module );
1871             msg_Err( p_stream, "cannot find encoder" );
1872             return VLC_EGENERIC;
1873         }
1874     }
1875
1876     if( !p_sys->p_spu )
1877     {
1878         p_sys->p_spu = spu_Create( p_stream );
1879         spu_Init( p_sys->p_spu );
1880     }
1881
1882     return VLC_SUCCESS;
1883 }
1884
1885 static void transcode_spu_close( sout_stream_t *p_stream, sout_stream_id_t *id)
1886 {
1887     /* Close decoder */
1888     if( id->p_decoder->p_module )
1889         module_Unneed( id->p_decoder, id->p_decoder->p_module );
1890
1891     /* Close encoder */
1892     if( id->p_encoder->p_module )
1893         module_Unneed( id->p_encoder, id->p_encoder->p_module );
1894 }
1895
1896 static int transcode_spu_process( sout_stream_t *p_stream,
1897                                   sout_stream_id_t *id,
1898                                   block_t *in, block_t **out )
1899 {
1900     sout_stream_sys_t *p_sys = p_stream->p_sys;
1901     subpicture_t *p_subpic;
1902     *out = NULL;
1903
1904     p_subpic = id->p_decoder->pf_decode_sub( id->p_decoder, &in );
1905     if( !p_subpic ) return VLC_EGENERIC;
1906
1907     if( p_sys->b_master_sync && p_sys->i_master_drift )
1908     {
1909         p_subpic->i_start -= p_sys->i_master_drift;
1910         if( p_subpic->i_stop ) p_subpic->i_stop -= p_sys->i_master_drift;
1911     }
1912
1913     if( p_sys->b_soverlay )
1914     {
1915         spu_DisplaySubpicture( p_sys->p_spu, p_subpic );
1916     }
1917     else
1918     {
1919         block_t *p_block;
1920
1921         p_block = id->p_encoder->pf_encode_sub( id->p_encoder, p_subpic );
1922         spu_del_buffer( id->p_decoder, p_subpic );
1923
1924         if( p_block )
1925         {
1926             block_ChainAppend( out, p_block );
1927             return VLC_SUCCESS;
1928         }
1929     }
1930
1931     return VLC_EGENERIC;
1932 }
1933
1934 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
1935 {
1936     sout_stream_t *p_stream = (sout_stream_t *)p_dec->p_owner;
1937     return spu_CreateSubpicture( p_stream->p_sys->p_spu );
1938 }
1939
1940 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
1941 {
1942     sout_stream_t *p_stream = (sout_stream_t *)p_dec->p_owner;
1943     spu_DestroySubpicture( p_stream->p_sys->p_spu, p_subpic );
1944 }