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_shortname( _("Transcode"));
 134     set_description( _("Transcode stream output") );
 135     set_capability( "sout stream", 50 );
 136     add_shortcut( "transcode" );
 137     set_callbacks( Open, Close );
 138     set_category( CAT_SOUT );
 139     set_subcategory( SUBCAT_SOUT_STREAM );
 140     set_section( N_("Video"), NULL );
 141     add_string( SOUT_CFG_PREFIX "venc", NULL, NULL, VENC_TEXT,
 142                 VENC_LONGTEXT, VLC_FALSE );
 143     add_string( SOUT_CFG_PREFIX "vcodec", NULL, NULL, VCODEC_TEXT,
 144                 VCODEC_LONGTEXT, VLC_FALSE );
 145     add_integer( SOUT_CFG_PREFIX "vb", 800 * 1000, NULL, VB_TEXT,
 146                  VB_LONGTEXT, VLC_FALSE );
 147     add_float( SOUT_CFG_PREFIX "scale", 1, NULL, SCALE_TEXT,
 148                SCALE_LONGTEXT, VLC_FALSE );
 149     add_float( SOUT_CFG_PREFIX "fps", 0, NULL, FPS_TEXT,
 150                FPS_LONGTEXT, VLC_FALSE );
 151     add_bool( SOUT_CFG_PREFIX "deinterlace", 0, NULL, DEINTERLACE_TEXT,
 152               DEINTERLACE_LONGTEXT, VLC_FALSE );
 153     add_integer( SOUT_CFG_PREFIX "width", 0, NULL, WIDTH_TEXT,
 154                  WIDTH_LONGTEXT, VLC_TRUE );
 155     add_integer( SOUT_CFG_PREFIX "height", 0, NULL, HEIGHT_TEXT,
 156                  HEIGHT_LONGTEXT, VLC_TRUE );
 157
 158     add_integer( SOUT_CFG_PREFIX "croptop", 0, NULL, CROPTOP_TEXT,
 159                  CROPTOP_LONGTEXT, VLC_TRUE );
 160     add_integer( SOUT_CFG_PREFIX "cropleft", 0, NULL, CROPLEFT_TEXT,
 161                  CROPLEFT_LONGTEXT, VLC_TRUE );
 162     add_integer( SOUT_CFG_PREFIX "cropbottom", 0, NULL, CROPBOTTOM_TEXT,
 163                  CROPBOTTOM_LONGTEXT, VLC_TRUE );
 164     add_integer( SOUT_CFG_PREFIX "cropright", 0, NULL, CROPRIGHT_TEXT,
 165                  CROPRIGHT_LONGTEXT, VLC_TRUE );
 166
 167     set_section( N_("Audio"), NULL );
 168     add_string( SOUT_CFG_PREFIX "aenc", NULL, NULL, AENC_TEXT,
 169                 AENC_LONGTEXT, VLC_FALSE );
 170     add_string( SOUT_CFG_PREFIX "acodec", NULL, NULL, ACODEC_TEXT,
 171                 ACODEC_LONGTEXT, VLC_FALSE );
 172     add_integer( SOUT_CFG_PREFIX "ab", 64000, NULL, AB_TEXT,
 173                  AB_LONGTEXT, VLC_FALSE );
 174     add_integer( SOUT_CFG_PREFIX "channels", 0, NULL, ACHANS_TEXT,
 175                  ACHANS_LONGTEXT, VLC_FALSE );
 176     add_integer( SOUT_CFG_PREFIX "samplerate", 0, NULL, ARATE_TEXT,
 177                  ARATE_LONGTEXT, VLC_TRUE );
 178     add_bool( SOUT_CFG_PREFIX "audio-sync", 0, NULL, ASYNC_TEXT,
 179               ASYNC_LONGTEXT, VLC_FALSE );
 180
 181     set_section( N_("Overlays/Subtitles"), NULL );
 182     add_string( SOUT_CFG_PREFIX "senc", NULL, NULL, SENC_TEXT,
 183                 SENC_LONGTEXT, VLC_FALSE );
 184     add_string( SOUT_CFG_PREFIX "scodec", NULL, NULL, SCODEC_TEXT,
 185                 SCODEC_LONGTEXT, VLC_FALSE );
 186     add_bool( SOUT_CFG_PREFIX "soverlay", 0, NULL, SCODEC_TEXT,
 187                SCODEC_LONGTEXT, VLC_FALSE );
 188     add_module_list_cat( SOUT_CFG_PREFIX "sfilter", SUBCAT_VIDEO_SUBPIC,
 189                      NULL, NULL,
 190                      SFILTER_TEXT, SFILTER_LONGTEXT, VLC_FALSE );
 191
 192     set_section( N_("Miscellaneous"), NULL );
 193     add_integer( SOUT_CFG_PREFIX "threads", 0, NULL, THREADS_TEXT,
 194                  THREADS_LONGTEXT, VLC_TRUE );
 195
 196 vlc_module_end();
 197
 198 static const char *ppsz_sout_options[] = {
 199     "venc", "vcodec", "vb", "croptop", "cropbottom", "cropleft", "cropright",
 200     "scale", "fps", "width", "height", "deinterlace", "threads",
 201     "aenc", "acodec", "ab", "samplerate", "channels",
 202     "senc", "scodec", "soverlay", "sfilter",
 203     "audio-sync", NULL
 204 };
 205
 206 /*****************************************************************************
 207  * Exported prototypes
 208  *****************************************************************************/
 209 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
 210 static int               Del ( sout_stream_t *, sout_stream_id_t * );
 211 static int               Send( sout_stream_t *, sout_stream_id_t *, block_t* );
 212
 213 static int  transcode_audio_new    ( sout_stream_t *, sout_stream_id_t * );
 214 static void transcode_audio_close  ( sout_stream_t *, sout_stream_id_t * );
 215 static int  transcode_audio_process( sout_stream_t *, sout_stream_id_t *,
 216                                      block_t *, block_t ** );
 217
 218 static aout_buffer_t *audio_new_buffer( decoder_t *, int );
 219 static void audio_del_buffer( decoder_t *, aout_buffer_t * );
 220
 221 static int  transcode_video_new    ( sout_stream_t *, sout_stream_id_t * );
 222 static void transcode_video_close  ( sout_stream_t *, sout_stream_id_t * );
 223 static int  transcode_video_encoder_open( sout_stream_t *, sout_stream_id_t *);
 224 static int  transcode_video_process( sout_stream_t *, sout_stream_id_t *,
 225                                      block_t *, block_t ** );
 226
 227 static void video_del_buffer( vlc_object_t *, picture_t * );
 228 static picture_t *video_new_buffer_decoder( decoder_t * );
 229 static void video_del_buffer_decoder( decoder_t *, picture_t * );
 230 static void video_link_picture_decoder( decoder_t *, picture_t * );
 231 static void video_unlink_picture_decoder( decoder_t *, picture_t * );
 232 static picture_t *video_new_buffer_filter( filter_t * );
 233 static void video_del_buffer_filter( filter_t *, picture_t * );
 234
 235 static int  transcode_spu_new    ( sout_stream_t *, sout_stream_id_t * );
 236 static void transcode_spu_close  ( sout_stream_t *, sout_stream_id_t * );
 237 static int  transcode_spu_process( sout_stream_t *, sout_stream_id_t *,
 238                                    block_t *, block_t ** );
 239
 240 static int  EncoderThread( struct sout_stream_sys_t * p_sys );
 241
 242 static int pi_channels_maps[6] =
 243 {
 244     0,
 245     AOUT_CHAN_CENTER,   AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
 246     AOUT_CHAN_CENTER | AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
 247     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARLEFT
 248      | AOUT_CHAN_REARRIGHT,
 249     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
 250      | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
 251 };
 252
 253 #define PICTURE_RING_SIZE 64
 254 #define SUBPICTURE_RING_SIZE 20
 255
 256 struct sout_stream_sys_t
 257 {
 258     VLC_COMMON_MEMBERS
 259
 260     sout_stream_t   *p_out;
 261     sout_stream_id_t *id_video;
 262     block_t         *p_buffers;
 263     vlc_mutex_t     lock_out;
 264     vlc_cond_t      cond;
 265     picture_t *     pp_pics[PICTURE_RING_SIZE];
 266     int             i_first_pic, i_last_pic;
 267
 268     /* Audio */
 269     vlc_fourcc_t    i_acodec;   /* codec audio (0 if not transcode) */
 270     char            *psz_aenc;
 271     sout_cfg_t      *p_audio_cfg;
 272     int             i_sample_rate;
 273     int             i_channels;
 274     int             i_abitrate;
 275
 276     /* Video */
 277     vlc_fourcc_t    i_vcodec;   /* codec video (0 if not transcode) */
 278     char            *psz_venc;
 279     sout_cfg_t      *p_video_cfg;
 280     int             i_vbitrate;
 281     double          f_scale;
 282     double          f_fps;
 283     int             i_width;
 284     int             i_height;
 285     vlc_bool_t      b_deinterlace;
 286     int             i_threads;
 287
 288     int             i_crop_top;
 289     int             i_crop_bottom;
 290     int             i_crop_right;
 291     int             i_crop_left;
 292
 293     /* SPU */
 294     vlc_fourcc_t    i_scodec;   /* codec spu (0 if not transcode) */
 295     char            *psz_senc;
 296     vlc_bool_t      b_soverlay;
 297     sout_cfg_t      *p_spu_cfg;
 298     spu_t           *p_spu;
 299
 300     /* Sync */
 301     vlc_bool_t      b_master_sync;
 302     mtime_t         i_master_drift;
 303 };
 304
 305 struct decoder_owner_sys_t
 306 {
 307     picture_t *pp_pics[PICTURE_RING_SIZE];
 308 };
 309 struct filter_owner_sys_t
 310 {
 311     picture_t *pp_pics[PICTURE_RING_SIZE];
 312 };
 313
 314 /*****************************************************************************
 315  * Open:
 316  *****************************************************************************/
 317 static int Open( vlc_object_t *p_this )
 318 {
 319     sout_stream_t     *p_stream = (sout_stream_t*)p_this;
 320     sout_stream_sys_t *p_sys;
 321     vlc_value_t       val;
 322
 323     p_sys = vlc_object_create( p_this, sizeof( sout_stream_sys_t ) );
 324
 325     p_sys->p_out = sout_StreamNew( p_stream->p_sout, p_stream->psz_next );
 326     if( !p_sys->p_out )
 327     {
 328         msg_Err( p_stream, "cannot create chain" );
 329         vlc_object_destroy( p_sys );
 330         return VLC_EGENERIC;
 331     }
 332
 333     p_sys->i_master_drift = 0;
 334
 335     sout_CfgParse( p_stream, SOUT_CFG_PREFIX, ppsz_sout_options,
 336                    p_stream->p_cfg );
 337
 338     /* Audio transcoding parameters */
 339     var_Get( p_stream, SOUT_CFG_PREFIX "aenc", &val );
 340     p_sys->psz_aenc = NULL;
 341     p_sys->p_audio_cfg = NULL;
 342     if( val.psz_string && *val.psz_string )
 343     {
 344         char *psz_next;
 345         psz_next = sout_CfgCreate( &p_sys->psz_aenc, &p_sys->p_audio_cfg,
 346                                    val.psz_string );
 347         if( psz_next ) free( psz_next );
 348     }
 349     if( val.psz_string ) free( val.psz_string );
 350
 351     var_Get( p_stream, SOUT_CFG_PREFIX "acodec", &val );
 352     p_sys->i_acodec = 0;
 353     if( val.psz_string && *val.psz_string )
 354     {
 355         char fcc[4] = "    ";
 356         memcpy( fcc, val.psz_string, __MIN( strlen( val.psz_string ), 4 ) );
 357         p_sys->i_acodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
 358     }
 359     if( val.psz_string ) free( val.psz_string );
 360
 361     var_Get( p_stream, SOUT_CFG_PREFIX "ab", &val );
 362     p_sys->i_abitrate = val.i_int;
 363     if( p_sys->i_abitrate < 4000 ) p_sys->i_abitrate *= 1000;
 364
 365     var_Get( p_stream, SOUT_CFG_PREFIX "samplerate", &val );
 366     p_sys->i_sample_rate = val.i_int;
 367
 368     var_Get( p_stream, SOUT_CFG_PREFIX "channels", &val );
 369     p_sys->i_channels = val.i_int;
 370
 371     if( p_sys->i_acodec )
 372     {
 373         msg_Dbg( p_stream, "codec audio=%4.4s %dHz %d channels %dKb/s",
 374                  (char *)&p_sys->i_acodec, p_sys->i_sample_rate,
 375                  p_sys->i_channels, p_sys->i_abitrate / 1000 );
 376     }
 377
 378     /* Video transcoding parameters */
 379     var_Get( p_stream, SOUT_CFG_PREFIX "venc", &val );
 380     p_sys->psz_venc = NULL;
 381     p_sys->p_video_cfg = NULL;
 382     if( val.psz_string && *val.psz_string )
 383     {
 384         char *psz_next;
 385         psz_next = sout_CfgCreate( &p_sys->psz_venc, &p_sys->p_video_cfg,
 386                                    val.psz_string );
 387         if( psz_next ) free( psz_next );
 388     }
 389     if( val.psz_string ) free( val.psz_string );
 390
 391     var_Get( p_stream, SOUT_CFG_PREFIX "vcodec", &val );
 392     p_sys->i_vcodec = 0;
 393     if( val.psz_string && *val.psz_string )
 394     {
 395         char fcc[4] = "    ";
 396         memcpy( fcc, val.psz_string, __MIN( strlen( val.psz_string ), 4 ) );
 397         p_sys->i_vcodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
 398     }
 399     if( val.psz_string ) free( val.psz_string );
 400
 401     var_Get( p_stream, SOUT_CFG_PREFIX "vb", &val );
 402     p_sys->i_vbitrate = val.i_int;
 403     if( p_sys->i_vbitrate < 16000 ) p_sys->i_vbitrate *= 1000;
 404
 405     var_Get( p_stream, SOUT_CFG_PREFIX "scale", &val );
 406     p_sys->f_scale = val.f_float;
 407
 408     var_Get( p_stream, SOUT_CFG_PREFIX "fps", &val );
 409     p_sys->f_fps = val.f_float;
 410
 411     var_Get( p_stream, SOUT_CFG_PREFIX "width", &val );
 412     p_sys->i_width = val.i_int;
 413
 414     var_Get( p_stream, SOUT_CFG_PREFIX "height", &val );
 415     p_sys->i_height = val.i_int;
 416
 417     var_Get( p_stream, SOUT_CFG_PREFIX "deinterlace", &val );
 418     p_sys->b_deinterlace = val.b_bool;
 419
 420     var_Get( p_stream, SOUT_CFG_PREFIX "croptop", &val );
 421     p_sys->i_crop_top = val.i_int;
 422     var_Get( p_stream, SOUT_CFG_PREFIX "cropbottom", &val );
 423     p_sys->i_crop_bottom = val.i_int;
 424     var_Get( p_stream, SOUT_CFG_PREFIX "cropleft", &val );
 425     p_sys->i_crop_left = val.i_int;
 426     var_Get( p_stream, SOUT_CFG_PREFIX "cropright", &val );
 427     p_sys->i_crop_right = val.i_int;
 428
 429     var_Get( p_stream, SOUT_CFG_PREFIX "threads", &val );
 430     p_sys->i_threads = val.i_int;
 431
 432     if( p_sys->i_vcodec )
 433     {
 434         msg_Dbg( p_stream, "codec video=%4.4s %dx%d scaling: %f %dkb/s",
 435                  (char *)&p_sys->i_vcodec, p_sys->i_width, p_sys->i_height,
 436                  p_sys->f_scale, p_sys->i_vbitrate / 1000 );
 437     }
 438
 439     /* Subpictures transcoding parameters */
 440     p_sys->p_spu = 0;
 441     p_sys->psz_senc = NULL;
 442     p_sys->p_spu_cfg = NULL;
 443     p_sys->i_scodec = 0;
 444
 445     var_Get( p_stream, SOUT_CFG_PREFIX "senc", &val );
 446     if( val.psz_string && *val.psz_string )
 447     {
 448         char *psz_next;
 449         psz_next = sout_CfgCreate( &p_sys->psz_senc, &p_sys->p_spu_cfg,
 450                                    val.psz_string );
 451         if( psz_next ) free( psz_next );
 452     }
 453     if( val.psz_string ) free( val.psz_string );
 454
 455     var_Get( p_stream, SOUT_CFG_PREFIX "scodec", &val );
 456     if( val.psz_string && *val.psz_string )
 457     {
 458         char fcc[4] = "    ";
 459         memcpy( fcc, val.psz_string, __MIN( strlen( val.psz_string ), 4 ) );
 460         p_sys->i_scodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
 461     }
 462     if( val.psz_string ) free( val.psz_string );
 463
 464     if( p_sys->i_scodec )
 465     {
 466         msg_Dbg( p_stream, "codec spu=%4.4s", (char *)&p_sys->i_acodec );
 467     }
 468
 469     var_Get( p_stream, SOUT_CFG_PREFIX "soverlay", &val );
 470     p_sys->b_soverlay = val.b_bool;
 471
 472     var_Get( p_stream, SOUT_CFG_PREFIX "sfilter", &val );
 473     if( val.psz_string && *val.psz_string )
 474     {
 475         p_sys->p_spu = spu_Create( p_stream );
 476         var_Create( p_sys->p_spu, "sub-filter", VLC_VAR_STRING );
 477         var_Set( p_sys->p_spu, "sub-filter", val );
 478         spu_Init( p_sys->p_spu );
 479     }
 480     if( val.psz_string ) free( val.psz_string );
 481
 482     var_Get( p_stream, SOUT_CFG_PREFIX "audio-sync", &val );
 483     p_sys->b_master_sync = val.b_bool;
 484     if( p_sys->f_fps > 0 ) p_sys->b_master_sync = VLC_TRUE;
 485
 486     p_stream->pf_add    = Add;
 487     p_stream->pf_del    = Del;
 488     p_stream->pf_send   = Send;
 489     p_stream->p_sys     = p_sys;
 490
 491     return VLC_SUCCESS;
 492 }
 493
 494 /*****************************************************************************
 495  * Close:
 496  *****************************************************************************/
 497 static void Close( vlc_object_t * p_this )
 498 {
 499     sout_stream_t       *p_stream = (sout_stream_t*)p_this;
 500     sout_stream_sys_t   *p_sys = p_stream->p_sys;
 501
 502     sout_StreamDelete( p_sys->p_out );
 503
 504     while( p_sys->p_audio_cfg != NULL )
 505     {
 506         sout_cfg_t *p_next = p_sys->p_audio_cfg->p_next;
 507
 508         if( p_sys->p_audio_cfg->psz_name )
 509             free( p_sys->p_audio_cfg->psz_name );
 510         if( p_sys->p_audio_cfg->psz_value )
 511             free( p_sys->p_audio_cfg->psz_value );
 512         free( p_sys->p_audio_cfg );
 513
 514         p_sys->p_audio_cfg = p_next;
 515     }
 516     if( p_sys->psz_aenc ) free( p_sys->psz_aenc );
 517
 518     while( p_sys->p_video_cfg != NULL )
 519     {
 520         sout_cfg_t *p_next = p_sys->p_video_cfg->p_next;
 521
 522         if( p_sys->p_video_cfg->psz_name )
 523             free( p_sys->p_video_cfg->psz_name );
 524         if( p_sys->p_video_cfg->psz_value )
 525             free( p_sys->p_video_cfg->psz_value );
 526         free( p_sys->p_video_cfg );
 527
 528         p_sys->p_video_cfg = p_next;
 529     }
 530     if( p_sys->psz_venc ) free( p_sys->psz_venc );
 531
 532     while( p_sys->p_spu_cfg != NULL )
 533     {
 534         sout_cfg_t *p_next = p_sys->p_spu_cfg->p_next;
 535
 536         if( p_sys->p_spu_cfg->psz_name )
 537             free( p_sys->p_spu_cfg->psz_name );
 538         if( p_sys->p_spu_cfg->psz_value )
 539             free( p_sys->p_spu_cfg->psz_value );
 540         free( p_sys->p_spu_cfg );
 541
 542         p_sys->p_spu_cfg = p_next;
 543     }
 544     if( p_sys->psz_senc ) free( p_sys->psz_senc );
 545
 546     if( p_sys->p_spu ) spu_Destroy( p_sys->p_spu );
 547
 548     vlc_object_destroy( p_sys );
 549 }
 550
 551 struct sout_stream_id_t
 552 {
 553     vlc_fourcc_t  b_transcode;
 554
 555     /* id of the out stream */
 556     void *id;
 557
 558     /* Decoder */
 559     decoder_t       *p_decoder;
 560
 561     /* Filters */
 562     filter_t        *pp_filter[10];
 563     int             i_filter;
 564
 565     /* Encoder */
 566     encoder_t       *p_encoder;
 567
 568     /* Sync */
 569     date_t          interpolated_pts;
 570 };
 571
 572
 573 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
 574 {
 575     sout_stream_sys_t *p_sys = p_stream->p_sys;
 576     sout_stream_id_t *id;
 577
 578     id = malloc( sizeof( sout_stream_id_t ) );
 579     memset( id, 0, sizeof(sout_stream_id_t) );
 580
 581     id->id = NULL;
 582     id->p_decoder = NULL;
 583     id->p_encoder = NULL;
 584
 585     /* Create decoder object */
 586     id->p_decoder = vlc_object_create( p_stream, VLC_OBJECT_DECODER );
 587     if( !id->p_decoder )
 588     {
 589         msg_Err( p_stream, "out of memory" );
 590         goto error;
 591     }
 592     vlc_object_attach( id->p_decoder, p_stream );
 593     id->p_decoder->p_module = NULL;
 594     id->p_decoder->fmt_in = *p_fmt;
 595     id->p_decoder->fmt_out = *p_fmt;
 596     id->p_decoder->fmt_out.i_extra = 0;
 597     id->p_decoder->fmt_out.p_extra = 0;
 598     id->p_decoder->b_pace_control = VLC_TRUE;
 599
 600     /* Create encoder object */
 601     id->p_encoder = vlc_object_create( p_stream, VLC_OBJECT_ENCODER );
 602     if( !id->p_encoder )
 603     {
 604         msg_Err( p_stream, "out of memory" );
 605         goto error;
 606     }
 607     vlc_object_attach( id->p_encoder, p_stream );
 608     id->p_encoder->p_module = NULL;
 609
 610     /* Create destination format */
 611     es_format_Init( &id->p_encoder->fmt_out, p_fmt->i_cat, 0 );
 612     id->p_encoder->fmt_out.i_id    = p_fmt->i_id;
 613     id->p_encoder->fmt_out.i_group = p_fmt->i_group;
 614     if( p_fmt->psz_language )
 615         id->p_encoder->fmt_out.psz_language = strdup( p_fmt->psz_language );
 616
 617     if( p_fmt->i_cat == AUDIO_ES && (p_sys->i_acodec || p_sys->psz_aenc) )
 618     {
 619         msg_Dbg( p_stream,
 620                  "creating audio transcoding from fcc=`%4.4s' to fcc=`%4.4s'",
 621                  (char*)&p_fmt->i_codec, (char*)&p_sys->i_acodec );
 622
 623         /* Complete destination format */
 624         id->p_encoder->fmt_out.i_codec = p_sys->i_acodec;
 625         id->p_encoder->fmt_out.audio.i_rate = p_sys->i_sample_rate > 0 ?
 626             p_sys->i_sample_rate : (int)p_fmt->audio.i_rate;
 627         id->p_encoder->fmt_out.audio.i_channels = p_sys->i_channels > 0 ?
 628             p_sys->i_channels : p_fmt->audio.i_channels;
 629         id->p_encoder->fmt_out.i_bitrate = p_sys->i_abitrate;
 630         id->p_encoder->fmt_out.audio.i_bitspersample =
 631             p_fmt->audio.i_bitspersample;
 632
 633         /* Build decoder -> filter -> encoder chain */
 634         if( transcode_audio_new( p_stream, id ) )
 635         {
 636             msg_Err( p_stream, "cannot create audio chain" );
 637             goto error;
 638         }
 639
 640         /* Open output stream */
 641         id->id = p_sys->p_out->pf_add( p_sys->p_out, &id->p_encoder->fmt_out );
 642         id->b_transcode = VLC_TRUE;
 643
 644         if( !id->id ) goto error;
 645
 646         date_Init( &id->interpolated_pts, p_fmt->audio.i_rate, 1 );
 647     }
 648     else if( p_fmt->i_cat == VIDEO_ES &&
 649              (p_sys->i_vcodec != 0 || p_sys->psz_venc) )
 650     {
 651         msg_Dbg( p_stream,
 652                  "creating video transcoding from fcc=`%4.4s' to fcc=`%4.4s'",
 653                  (char*)&p_fmt->i_codec, (char*)&p_sys->i_vcodec );
 654
 655         /* Complete destination format */
 656         id->p_encoder->fmt_out.i_codec = p_sys->i_vcodec;
 657         id->p_encoder->fmt_out.video.i_width  = p_sys->i_width;
 658         id->p_encoder->fmt_out.video.i_height = p_sys->i_height;
 659         id->p_encoder->fmt_out.i_bitrate = p_sys->i_vbitrate;
 660
 661         /* Build decoder -> filter -> encoder chain */
 662         if( transcode_video_new( p_stream, id ) )
 663         {
 664             msg_Err( p_stream, "cannot create video chain" );
 665             goto error;
 666         }
 667
 668         /* Stream will be added later on because we don't know
 669          * all the characteristics of the decoded stream yet */
 670         id->b_transcode = VLC_TRUE;
 671
 672         if( p_sys->f_fps > 0 )
 673         {
 674             id->p_encoder->fmt_out.video.i_frame_rate = p_sys->f_fps * 1000;
 675             id->p_encoder->fmt_out.video.i_frame_rate_base = 1000;
 676         }
 677     }
 678     else if( p_fmt->i_cat == SPU_ES && (p_sys->i_scodec || p_sys->psz_senc) )
 679     {
 680         msg_Dbg( p_stream, "creating subtitles transcoding from fcc=`%4.4s' "
 681                  "to fcc=`%4.4s'", (char*)&p_fmt->i_codec,
 682                  (char*)&p_sys->i_scodec );
 683
 684         /* Complete destination format */
 685         id->p_encoder->fmt_out.i_codec = p_sys->i_scodec;
 686
 687         /* build decoder -> filter -> encoder */
 688         if( transcode_spu_new( p_stream, id ) )
 689         {
 690             msg_Err( p_stream, "cannot create subtitles chain" );
 691             goto error;
 692         }
 693
 694         /* open output stream */
 695         id->id = p_sys->p_out->pf_add( p_sys->p_out, &id->p_encoder->fmt_out );
 696         id->b_transcode = VLC_TRUE;
 697
 698         if( !id->id ) goto error;
 699     }
 700     else if( p_fmt->i_cat == SPU_ES && p_sys->b_soverlay )
 701     {
 702         msg_Dbg( p_stream, "subtitles (fcc=`%4.4s') overlaying",
 703                  (char*)&p_fmt->i_codec );
 704
 705         id->b_transcode = VLC_TRUE;
 706
 707         /* Build decoder -> filter -> overlaying chain */
 708         if( transcode_spu_new( p_stream, id ) )
 709         {
 710             msg_Err( p_stream, "cannot create subtitles chain" );
 711             goto error;
 712         }
 713     }
 714     else
 715     {
 716         msg_Dbg( p_stream, "not transcoding a stream (fcc=`%4.4s')",
 717                  (char*)&p_fmt->i_codec );
 718         id->id = p_sys->p_out->pf_add( p_sys->p_out, p_fmt );
 719         id->b_transcode = VLC_FALSE;
 720
 721         if( !id->id ) goto error;
 722     }
 723
 724     return id;
 725
 726  error:
 727     if( id->p_decoder )
 728     {
 729         vlc_object_detach( id->p_decoder );
 730         vlc_object_destroy( id->p_decoder );
 731     }
 732
 733     if( id->p_encoder )
 734     {
 735         vlc_object_detach( id->p_encoder );
 736         vlc_object_destroy( id->p_encoder );
 737     }
 738
 739     free( id );
 740     return NULL;
 741 }
 742
 743 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
 744 {
 745     sout_stream_sys_t *p_sys = p_stream->p_sys;
 746
 747     if( id->b_transcode )
 748     {
 749         switch( id->p_decoder->fmt_in.i_cat )
 750         {
 751         case AUDIO_ES:
 752             transcode_audio_close( p_stream, id );
 753             break;
 754         case VIDEO_ES:
 755             transcode_video_close( p_stream, id );
 756             break;
 757         case SPU_ES:
 758             transcode_spu_close( p_stream, id );
 759             break;
 760         }
 761     }
 762
 763     if( id->id ) p_sys->p_out->pf_del( p_sys->p_out, id->id );
 764
 765     if( id->p_decoder )
 766     {
 767         vlc_object_detach( id->p_decoder );
 768         vlc_object_destroy( id->p_decoder );
 769     }
 770
 771     if( id->p_encoder )
 772     {
 773         vlc_object_detach( id->p_encoder );
 774         vlc_object_destroy( id->p_encoder );
 775     }
 776
 777     free( id );
 778
 779     return VLC_SUCCESS;
 780 }
 781
 782 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
 783                  block_t *p_buffer )
 784 {
 785     sout_stream_sys_t *p_sys = p_stream->p_sys;
 786     block_t *p_out;
 787
 788     if( !id->b_transcode && id->id )
 789     {
 790         if( p_sys->b_master_sync && p_sys->i_master_drift )
 791         {
 792             if( p_buffer->i_dts > 0 )
 793             {
 794                 p_buffer->i_dts -= p_sys->i_master_drift;
 795                 if( p_buffer->i_dts < 0 )
 796                 {
 797                     block_Release( p_buffer );
 798                     return VLC_EGENERIC;
 799                 }
 800             }
 801             if( p_buffer->i_pts > 0 )
 802             {
 803                 p_buffer->i_pts -= p_sys->i_master_drift;
 804                 if( p_buffer->i_pts < 0 )
 805                 {
 806                     block_Release( p_buffer );
 807                     return VLC_EGENERIC;
 808                 }
 809             }
 810         }
 811
 812         return p_sys->p_out->pf_send( p_sys->p_out, id->id, p_buffer );
 813     }
 814     else if( !id->b_transcode )
 815     {
 816         block_Release( p_buffer );
 817         return VLC_EGENERIC;
 818     }
 819
 820     switch( id->p_decoder->fmt_in.i_cat )
 821     {
 822     case AUDIO_ES:
 823         transcode_audio_process( p_stream, id, p_buffer, &p_out );
 824         break;
 825
 826     case VIDEO_ES:
 827         if( transcode_video_process( p_stream, id, p_buffer, &p_out )
 828             != VLC_SUCCESS )
 829         {
 830             return VLC_EGENERIC;
 831         }
 832         break;
 833
 834     case SPU_ES:
 835         if( transcode_spu_process( p_stream, id, p_buffer, &p_out ) !=
 836             VLC_SUCCESS )
 837         {
 838             return VLC_EGENERIC;
 839         }
 840         break;
 841
 842     default:
 843         block_Release( p_buffer );
 844         break;
 845     }
 846
 847     if( p_out ) return p_sys->p_out->pf_send( p_sys->p_out, id->id, p_out );
 848     return VLC_SUCCESS;
 849 }
 850
 851 /****************************************************************************
 852  * decoder reencoder part
 853  ****************************************************************************/
 854 int audio_BitsPerSample( vlc_fourcc_t i_format )
 855 {
 856     switch( i_format )
 857     {
 858     case VLC_FOURCC('u','8',' ',' '):
 859     case VLC_FOURCC('s','8',' ',' '):
 860         return 8;
 861
 862     case VLC_FOURCC('u','1','6','l'):
 863     case VLC_FOURCC('s','1','6','l'):
 864     case VLC_FOURCC('u','1','6','b'):
 865     case VLC_FOURCC('s','1','6','b'):
 866         return 16;
 867
 868     case VLC_FOURCC('u','2','4','l'):
 869     case VLC_FOURCC('s','2','4','l'):
 870     case VLC_FOURCC('u','2','4','b'):
 871     case VLC_FOURCC('s','2','4','b'):
 872         return 24;
 873
 874     case VLC_FOURCC('u','3','2','l'):
 875     case VLC_FOURCC('s','3','2','l'):
 876     case VLC_FOURCC('u','3','2','b'):
 877     case VLC_FOURCC('s','3','2','b'):
 878     case VLC_FOURCC('f','l','3','2'):
 879     case VLC_FOURCC('f','i','3','2'):
 880         return 32;
 881
 882     case VLC_FOURCC('f','l','6','4'):
 883         return 64;
 884     }
 885
 886     return 0;
 887 }
 888
 889 static int transcode_audio_new( sout_stream_t *p_stream,
 890                                 sout_stream_id_t *id )
 891 {
 892     sout_stream_sys_t *p_sys = p_stream->p_sys;
 893
 894     /*
 895      * Open decoder
 896      */
 897
 898     /* Initialization of decoder structures */
 899     id->p_decoder->pf_decode_audio = 0;
 900     id->p_decoder->pf_aout_buffer_new = audio_new_buffer;
 901     id->p_decoder->pf_aout_buffer_del = audio_del_buffer;
 902     //id->p_decoder->p_cfg = p_sys->p_video_cfg;
 903
 904     id->p_decoder->p_module =
 905         module_Need( id->p_decoder, "decoder", "$codec", 0 );
 906
 907     if( !id->p_decoder->p_module )
 908     {
 909         msg_Err( p_stream, "cannot find decoder" );
 910         return VLC_EGENERIC;
 911     }
 912     id->p_decoder->fmt_out.audio.i_bitspersample =
 913         audio_BitsPerSample( id->p_decoder->fmt_out.i_codec );
 914
 915     /*
 916      * Open encoder
 917      */
 918
 919     /* Initialization of encoder format structures */
 920     es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
 921                     id->p_decoder->fmt_out.i_codec );
 922     id->p_encoder->fmt_in.audio.i_format = id->p_decoder->fmt_out.i_codec;
 923
 924     /* Sanity check for audio channels */
 925     id->p_encoder->fmt_out.audio.i_channels =
 926         __MIN( id->p_encoder->fmt_out.audio.i_channels,
 927                id->p_decoder->fmt_out.audio.i_channels );
 928     if( id->p_decoder->fmt_out.audio.i_channels ==
 929         id->p_encoder->fmt_out.audio.i_channels )
 930         id->p_encoder->fmt_out.audio.i_physical_channels =
 931             id->p_encoder->fmt_out.audio.i_original_channels =
 932                 id->p_decoder->fmt_out.audio.i_physical_channels;
 933     else
 934         id->p_encoder->fmt_out.audio.i_physical_channels =
 935             id->p_encoder->fmt_out.audio.i_original_channels =
 936                 pi_channels_maps[id->p_encoder->fmt_out.audio.i_channels];
 937
 938     /* Initialization of encoder format structures */
 939     es_format_Init( &id->p_encoder->fmt_in, AUDIO_ES, AOUT_FMT_S16_NE );
 940     id->p_encoder->fmt_in.audio.i_format = AOUT_FMT_S16_NE;
 941     id->p_encoder->fmt_in.audio.i_rate = id->p_encoder->fmt_out.audio.i_rate;
 942     id->p_encoder->fmt_in.audio.i_physical_channels =
 943         id->p_encoder->fmt_in.audio.i_original_channels =
 944             id->p_encoder->fmt_out.audio.i_physical_channels;
 945     id->p_encoder->fmt_in.audio.i_channels =
 946         id->p_encoder->fmt_out.audio.i_channels;
 947     id->p_encoder->fmt_in.audio.i_bitspersample =
 948         audio_BitsPerSample( id->p_encoder->fmt_in.i_codec );
 949
 950     id->p_encoder->p_cfg = p_stream->p_sys->p_audio_cfg;
 951
 952     id->p_encoder->p_module =
 953         module_Need( id->p_encoder, "encoder", p_sys->psz_aenc, VLC_TRUE );
 954     if( !id->p_encoder->p_module )
 955     {
 956         msg_Err( p_stream, "cannot find encoder" );
 957         module_Unneed( id->p_decoder, id->p_decoder->p_module );
 958         id->p_decoder->p_module = 0;
 959         return VLC_EGENERIC;
 960     }
 961     id->p_encoder->fmt_in.audio.i_format = id->p_encoder->fmt_in.i_codec;
 962     id->p_encoder->fmt_in.audio.i_bitspersample =
 963         audio_BitsPerSample( id->p_encoder->fmt_in.i_codec );
 964
 965     /* Check if we need a filter for chroma conversion or resizing */
 966     if( id->p_decoder->fmt_out.i_codec !=
 967         id->p_encoder->fmt_in.i_codec )
 968     {
 969         id->pp_filter[0] =
 970             vlc_object_create( p_stream, VLC_OBJECT_FILTER );
 971         vlc_object_attach( id->pp_filter[0], p_stream );
 972
 973         id->pp_filter[0]->pf_audio_buffer_new = __block_New;
 974
 975         id->pp_filter[0]->fmt_in = id->p_decoder->fmt_out;
 976         id->pp_filter[0]->fmt_out = id->p_encoder->fmt_in;
 977         id->pp_filter[0]->p_module =
 978             module_Need( id->pp_filter[0], "audio filter2", 0, 0 );
 979         if( id->pp_filter[0]->p_module ) id->i_filter++;
 980         else
 981         {
 982             msg_Dbg( p_stream, "no audio filter found (%4.4s->%4.4s)",
 983                      (char *)&id->pp_filter[0]->fmt_in,
 984                      (char *)&id->pp_filter[0]->fmt_out );
 985             vlc_object_detach( id->pp_filter[0] );
 986             vlc_object_destroy( id->pp_filter[0] );
 987             module_Unneed( id->p_decoder, id->p_decoder->p_module );
 988             id->p_decoder->p_module = 0;
 989             module_Unneed( id->p_encoder, id->p_encoder->p_module );
 990             id->p_encoder->p_module = 0;
 991             return VLC_EGENERIC;
 992         }
 993
 994         id->pp_filter[0]->fmt_out.audio.i_bitspersample =
 995             audio_BitsPerSample( id->pp_filter[0]->fmt_out.i_codec );
 996
 997         /* Try a 2 stage conversion */
 998         if( id->pp_filter[0]->fmt_out.i_codec !=
 999             id->p_encoder->fmt_in.i_codec )
1000         {
1001             id->pp_filter[1] =
1002                 vlc_object_create( p_stream, VLC_OBJECT_FILTER );
1003             vlc_object_attach( id->pp_filter[1], p_stream );
1004
1005             id->pp_filter[1]->pf_audio_buffer_new = __block_New;
1006
1007             id->pp_filter[1]->fmt_in = id->pp_filter[0]->fmt_out;
1008             id->pp_filter[1]->fmt_out = id->p_encoder->fmt_in;
1009             id->pp_filter[1]->p_module =
1010               module_Need( id->pp_filter[1], "audio filter2", 0, 0 );
1011             if( !id->pp_filter[1]->p_module ||
1012                 id->pp_filter[1]->fmt_out.i_codec !=
1013                   id->p_encoder->fmt_in.i_codec )
1014             {
1015                 msg_Dbg( p_stream, "no audio filter found (%4.4s->%4.4s)",
1016                          (char *)&id->pp_filter[1]->fmt_in,
1017                          (char *)&id->pp_filter[1]->fmt_out );
1018                 module_Unneed( id->pp_filter[0], id->pp_filter[0]->p_module );
1019                 vlc_object_detach( id->pp_filter[0] );
1020                 vlc_object_destroy( id->pp_filter[0] );
1021                 if( id->pp_filter[1]->p_module )
1022                 module_Unneed( id->pp_filter[0], id->pp_filter[0]->p_module );
1023                 vlc_object_detach( id->pp_filter[1] );
1024                 vlc_object_destroy( id->pp_filter[1] );
1025                 module_Unneed( id->p_decoder, id->p_decoder->p_module );
1026                 id->p_decoder->p_module = 0;
1027                 module_Unneed( id->p_encoder, id->p_encoder->p_module );
1028                 id->p_encoder->p_module = 0;
1029                 return VLC_EGENERIC;
1030             }
1031             else id->i_filter++;
1032         }
1033     }
1034
1035     /* FIXME: Hack for mp3 transcoding support */
1036     if( id->p_encoder->fmt_out.i_codec == VLC_FOURCC( 'm','p','3',' ' ) )
1037         id->p_encoder->fmt_out.i_codec = VLC_FOURCC( 'm','p','g','a' );
1038
1039     return VLC_SUCCESS;
1040 }
1041
1042 static void transcode_audio_close( sout_stream_t *p_stream,
1043                                    sout_stream_id_t *id )
1044 {
1045     int i;
1046
1047     /* Close decoder */
1048     if( id->p_decoder->p_module )
1049         module_Unneed( id->p_decoder, id->p_decoder->p_module );
1050
1051     /* Close encoder */
1052     if( id->p_encoder->p_module )
1053         module_Unneed( id->p_encoder, id->p_encoder->p_module );
1054
1055     /* Close filters */
1056     for( i = 0; i < id->i_filter; i++ )
1057     {
1058         vlc_object_detach( id->pp_filter[i] );
1059         if( id->pp_filter[i]->p_module )
1060             module_Unneed( id->pp_filter[i], id->pp_filter[i]->p_module );
1061         vlc_object_destroy( id->pp_filter[i] );
1062     }
1063 }
1064
1065 static int transcode_audio_process( sout_stream_t *p_stream,
1066                                     sout_stream_id_t *id,
1067                                     block_t *in, block_t **out )
1068 {
1069     sout_stream_sys_t *p_sys = p_stream->p_sys;
1070     aout_buffer_t *p_audio_buf;
1071     block_t *p_block, *p_audio_block;
1072     int i;
1073     *out = NULL;
1074
1075     while( (p_audio_buf = id->p_decoder->pf_decode_audio( id->p_decoder,
1076                                                           &in )) )
1077     {
1078         if( p_sys->b_master_sync )
1079         {
1080             mtime_t i_dts = date_Get( &id->interpolated_pts ) + 1;
1081             p_sys->i_master_drift = p_audio_buf->start_date - i_dts;
1082             date_Increment( &id->interpolated_pts, p_audio_buf->i_nb_samples );
1083             p_audio_buf->start_date -= p_sys->i_master_drift;
1084             p_audio_buf->end_date -= p_sys->i_master_drift;
1085         }
1086
1087         p_audio_block = p_audio_buf->p_sys;
1088         p_audio_block->i_buffer = p_audio_buf->i_nb_bytes;
1089         p_audio_block->i_dts = p_audio_block->i_pts =
1090             p_audio_buf->start_date;
1091         p_audio_block->i_length = p_audio_buf->end_date -
1092             p_audio_buf->start_date;
1093         p_audio_block->i_samples = p_audio_buf->i_nb_samples;
1094
1095         /* Run filter chain */
1096         for( i = 0; i < id->i_filter; i++ )
1097         {
1098             p_audio_block =
1099                 id->pp_filter[i]->pf_audio_filter( id->pp_filter[i],
1100                                                    p_audio_block );
1101         }
1102
1103         p_audio_buf->p_buffer = p_audio_block->p_buffer;
1104         p_audio_buf->i_nb_bytes = p_audio_block->i_buffer;
1105         p_audio_buf->i_nb_samples = p_audio_block->i_samples;
1106         p_audio_buf->start_date = p_audio_block->i_dts;
1107         p_audio_buf->end_date = p_audio_block->i_dts + p_audio_block->i_length;
1108
1109         p_block = id->p_encoder->pf_encode_audio( id->p_encoder, p_audio_buf );
1110         block_ChainAppend( out, p_block );
1111         block_Release( p_audio_block );
1112         free( p_audio_buf );
1113     }
1114
1115     return VLC_SUCCESS;
1116 }
1117
1118 static void audio_release_buffer( aout_buffer_t *p_buffer )
1119 {
1120     if( p_buffer && p_buffer->p_sys ) block_Release( p_buffer->p_sys );
1121     if( p_buffer ) free( p_buffer );
1122 }
1123
1124 static aout_buffer_t *audio_new_buffer( decoder_t *p_dec, int i_samples )
1125 {
1126     aout_buffer_t *p_buffer;
1127     block_t *p_block;
1128     int i_size;
1129
1130     if( p_dec->fmt_out.audio.i_bitspersample )
1131     {
1132         i_size = i_samples * p_dec->fmt_out.audio.i_bitspersample / 8 *
1133             p_dec->fmt_out.audio.i_channels;
1134     }
1135     else if( p_dec->fmt_out.audio.i_bytes_per_frame &&
1136              p_dec->fmt_out.audio.i_frame_length )
1137     {
1138         i_size = i_samples * p_dec->fmt_out.audio.i_bytes_per_frame /
1139             p_dec->fmt_out.audio.i_frame_length;
1140     }
1141     else
1142     {
1143         i_size = i_samples * 4 * p_dec->fmt_out.audio.i_channels;
1144     }
1145
1146     p_buffer = malloc( sizeof(aout_buffer_t) );
1147     p_buffer->pf_release = audio_release_buffer;
1148     p_buffer->p_sys = p_block = block_New( p_dec, i_size );
1149
1150     p_buffer->p_buffer = p_block->p_buffer;
1151     p_buffer->i_size = p_buffer->i_nb_bytes = p_block->i_buffer;
1152     p_buffer->i_nb_samples = i_samples;
1153     p_block->i_samples = i_samples;
1154
1155     return p_buffer;
1156 }
1157
1158 static void audio_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
1159 {
1160     if( p_buffer && p_buffer->p_sys ) block_Release( p_buffer->p_sys );
1161     if( p_buffer ) free( p_buffer );
1162 }
1163
1164 /*
1165  * video
1166  */
1167 static int transcode_video_new( sout_stream_t *p_stream, sout_stream_id_t *id )
1168 {
1169     sout_stream_sys_t *p_sys = p_stream->p_sys;
1170     int i;
1171
1172     /*
1173      * Open decoder
1174      */
1175
1176     /* Initialization of decoder structures */
1177     id->p_decoder->pf_decode_video = 0;
1178     id->p_decoder->pf_vout_buffer_new = video_new_buffer_decoder;
1179     id->p_decoder->pf_vout_buffer_del = video_del_buffer_decoder;
1180     id->p_decoder->pf_picture_link    = video_link_picture_decoder;
1181     id->p_decoder->pf_picture_unlink  = video_unlink_picture_decoder;
1182     id->p_decoder->p_owner = malloc( sizeof(decoder_owner_sys_t) );
1183     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1184         id->p_decoder->p_owner->pp_pics[i] = 0;
1185     //id->p_decoder->p_cfg = p_sys->p_video_cfg;
1186
1187     id->p_decoder->p_module =
1188         module_Need( id->p_decoder, "decoder", "$codec", 0 );
1189
1190     if( !id->p_decoder->p_module )
1191     {
1192         msg_Err( p_stream, "cannot find decoder" );
1193         return VLC_EGENERIC;
1194     }
1195
1196     /*
1197      * Open encoder.
1198      * Because some info about the decoded input will only be available
1199      * once the first frame is decoded, we actually only test the availability
1200      * of the encoder here.
1201      */
1202
1203     /* Initialization of encoder format structures */
1204     es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
1205                     id->p_decoder->fmt_out.i_codec );
1206     id->p_encoder->fmt_in.video.i_chroma = id->p_decoder->fmt_out.i_codec;
1207
1208     /* The dimensions will be set properly later on.
1209      * Just put sensible values so we can test an encoder is available. */
1210     id->p_encoder->fmt_in.video.i_width =
1211         id->p_encoder->fmt_out.video.i_width ?
1212         id->p_encoder->fmt_out.video.i_width :
1213         id->p_decoder->fmt_in.video.i_width ?
1214         id->p_decoder->fmt_in.video.i_width : 16;
1215     id->p_encoder->fmt_in.video.i_height =
1216         id->p_encoder->fmt_out.video.i_height ?
1217         id->p_encoder->fmt_out.video.i_height :
1218         id->p_decoder->fmt_in.video.i_height ?
1219         id->p_decoder->fmt_in.video.i_height : 16;
1220     id->p_encoder->fmt_in.video.i_frame_rate = 25;
1221     id->p_encoder->fmt_in.video.i_frame_rate_base = 1;
1222
1223     id->p_encoder->i_threads = p_sys->i_threads;
1224     id->p_encoder->p_cfg = p_sys->p_video_cfg;
1225
1226     id->p_encoder->p_module =
1227         module_Need( id->p_encoder, "encoder", p_sys->psz_venc, VLC_TRUE );
1228     if( !id->p_encoder->p_module )
1229     {
1230         msg_Err( p_stream, "cannot find encoder" );
1231         module_Unneed( id->p_decoder, id->p_decoder->p_module );
1232         id->p_decoder->p_module = 0;
1233         return VLC_EGENERIC;
1234     }
1235
1236     /* Close the encoder.
1237      * We'll open it only when we have the first frame. */
1238     module_Unneed( id->p_encoder, id->p_encoder->p_module );
1239     id->p_encoder->p_module = NULL;
1240
1241     if( p_sys->i_threads >= 1 )
1242     {
1243         p_sys->id_video = id;
1244         vlc_mutex_init( p_stream, &p_sys->lock_out );
1245         vlc_cond_init( p_stream, &p_sys->cond );
1246         memset( p_sys->pp_pics, 0, sizeof(p_sys->pp_pics) );
1247         p_sys->i_first_pic = 0;
1248         p_sys->i_last_pic = 0;
1249         p_sys->p_buffers = NULL;
1250         p_sys->b_die = p_sys->b_error = 0;
1251         if( vlc_thread_create( p_sys, "encoder", EncoderThread,
1252                                VLC_THREAD_PRIORITY_VIDEO, VLC_FALSE ) )
1253         {
1254             msg_Err( p_stream, "cannot spawn encoder thread" );
1255             module_Unneed( id->p_decoder, id->p_decoder->p_module );
1256             id->p_decoder->p_module = 0;
1257             return VLC_EGENERIC;
1258         }
1259     }
1260
1261     date_Set( &id->interpolated_pts, 0 );
1262
1263     return VLC_SUCCESS;
1264 }
1265
1266 static int transcode_video_encoder_open( sout_stream_t *p_stream,
1267                                          sout_stream_id_t *id )
1268 {
1269     sout_stream_sys_t *p_sys = p_stream->p_sys;
1270
1271     /* Hack because of the copy packetizer which can fail to detect the
1272      * proper size (which forces us to wait until the 1st frame
1273      * is decoded) */
1274     int i_width = id->p_decoder->fmt_out.video.i_width -
1275         p_sys->i_crop_left - p_sys->i_crop_right;
1276     int i_height = id->p_decoder->fmt_out.video.i_height -
1277         p_sys->i_crop_top - p_sys->i_crop_bottom;
1278
1279     if( id->p_encoder->fmt_out.video.i_width <= 0 &&
1280         id->p_encoder->fmt_out.video.i_height <= 0 && p_sys->f_scale )
1281     {
1282         /* Apply the scaling */
1283         id->p_encoder->fmt_out.video.i_width = i_width * p_sys->f_scale;
1284         id->p_encoder->fmt_out.video.i_height = i_height * p_sys->f_scale;
1285     }
1286     else if( id->p_encoder->fmt_out.video.i_width > 0 &&
1287              id->p_encoder->fmt_out.video.i_height <= 0 )
1288     {
1289         id->p_encoder->fmt_out.video.i_height =
1290             id->p_encoder->fmt_out.video.i_width / (double)i_width * i_height;
1291     }
1292     else if( id->p_encoder->fmt_out.video.i_width <= 0 &&
1293              id->p_encoder->fmt_out.video.i_height > 0 )
1294     {
1295         id->p_encoder->fmt_out.video.i_width =
1296             id->p_encoder->fmt_out.video.i_height / (double)i_height * i_width;
1297     }
1298
1299     /* Make sure the size is at least a multiple of 2 */
1300     id->p_encoder->fmt_out.video.i_width =
1301         (id->p_encoder->fmt_out.video.i_width + 1) >> 1 << 1;
1302     id->p_encoder->fmt_out.video.i_height =
1303         (id->p_encoder->fmt_out.video.i_height + 1) >> 1 << 1;
1304
1305     id->p_encoder->fmt_in.video.i_width =
1306         id->p_encoder->fmt_out.video.i_width;
1307     id->p_encoder->fmt_in.video.i_height =
1308         id->p_encoder->fmt_out.video.i_height;
1309
1310     if( !id->p_encoder->fmt_out.video.i_frame_rate ||
1311         !id->p_encoder->fmt_out.video.i_frame_rate_base )
1312     {
1313         if( id->p_decoder->fmt_out.video.i_frame_rate &&
1314             id->p_decoder->fmt_out.video.i_frame_rate_base )
1315         {
1316             id->p_encoder->fmt_out.video.i_frame_rate =
1317                 id->p_decoder->fmt_out.video.i_frame_rate;
1318             id->p_encoder->fmt_out.video.i_frame_rate_base =
1319                 id->p_decoder->fmt_out.video.i_frame_rate_base;
1320         }
1321         else
1322         {
1323             /* Pick a sensible default value */
1324             id->p_encoder->fmt_out.video.i_frame_rate = 25;
1325             id->p_encoder->fmt_out.video.i_frame_rate_base = 1;
1326         }
1327     }
1328
1329     id->p_encoder->fmt_in.video.i_frame_rate =
1330         id->p_encoder->fmt_out.video.i_frame_rate;
1331     id->p_encoder->fmt_in.video.i_frame_rate_base =
1332         id->p_encoder->fmt_out.video.i_frame_rate_base;
1333
1334     date_Init( &id->interpolated_pts,
1335                id->p_encoder->fmt_out.video.i_frame_rate,
1336                id->p_encoder->fmt_out.video.i_frame_rate_base );
1337
1338     /* Check whether a particular aspect ratio was requested */
1339     if( !id->p_encoder->fmt_out.video.i_aspect )
1340     {
1341         id->p_encoder->fmt_out.video.i_aspect =
1342             id->p_decoder->fmt_out.video.i_aspect;
1343     }
1344     id->p_encoder->fmt_in.video.i_aspect =
1345         id->p_encoder->fmt_out.video.i_aspect;
1346
1347     id->p_encoder->p_module =
1348         module_Need( id->p_encoder, "encoder", p_sys->psz_venc, VLC_TRUE );
1349     if( !id->p_encoder->p_module )
1350     {
1351         msg_Err( p_stream, "cannot find encoder" );
1352         return VLC_EGENERIC;
1353     }
1354
1355     id->p_encoder->fmt_in.video.i_chroma = id->p_encoder->fmt_in.i_codec;
1356
1357     /* Hack for mp2v/mp1v transcoding support */
1358     if( id->p_encoder->fmt_out.i_codec == VLC_FOURCC('m','p','1','v') ||
1359         id->p_encoder->fmt_out.i_codec == VLC_FOURCC('m','p','2','v') )
1360     {
1361         id->p_encoder->fmt_out.i_codec = VLC_FOURCC('m','p','g','v');
1362     }
1363
1364     id->id = p_stream->p_sys->p_out->pf_add( p_stream->p_sys->p_out,
1365                                              &id->p_encoder->fmt_out );
1366     if( !id->id )
1367     {
1368         msg_Err( p_stream, "cannot add this stream" );
1369         return VLC_EGENERIC;
1370     }
1371
1372     return VLC_SUCCESS;
1373 }
1374
1375 static void transcode_video_close( sout_stream_t *p_stream,
1376                                    sout_stream_id_t *id )
1377 {
1378     int i, j;
1379
1380     if( p_stream->p_sys->i_threads >= 1 )
1381     {
1382         vlc_mutex_lock( &p_stream->p_sys->lock_out );
1383         p_stream->p_sys->b_die = 1;
1384         vlc_cond_signal( &p_stream->p_sys->cond );
1385         vlc_mutex_unlock( &p_stream->p_sys->lock_out );
1386         vlc_thread_join( p_stream->p_sys );
1387         vlc_mutex_destroy( &p_stream->p_sys->lock_out );
1388         vlc_cond_destroy( &p_stream->p_sys->cond );
1389     }
1390
1391     /* Close decoder */
1392     if( id->p_decoder->p_module )
1393         module_Unneed( id->p_decoder, id->p_decoder->p_module );
1394
1395     if( id->p_decoder->p_owner )
1396     {
1397         /* Clean-up pictures ring buffer */
1398         for( i = 0; i < PICTURE_RING_SIZE; i++ )
1399         {
1400             if( id->p_decoder->p_owner->pp_pics[i] )
1401                 video_del_buffer( VLC_OBJECT(id->p_decoder),
1402                                   id->p_decoder->p_owner->pp_pics[i] );
1403         }
1404         free( id->p_decoder->p_owner );
1405     }
1406
1407     /* Close encoder */
1408     if( id->p_encoder->p_module )
1409         module_Unneed( id->p_encoder, id->p_encoder->p_module );
1410
1411     /* Close filters */
1412     for( i = 0; i < id->i_filter; i++ )
1413     {
1414         vlc_object_detach( id->pp_filter[i] );
1415         if( id->pp_filter[i]->p_module )
1416             module_Unneed( id->pp_filter[i], id->pp_filter[i]->p_module );
1417
1418         /* Clean-up pictures ring buffer */
1419         for( j = 0; j < PICTURE_RING_SIZE; j++ )
1420         {
1421             if( id->pp_filter[i]->p_owner->pp_pics[j] )
1422                 video_del_buffer( VLC_OBJECT(id->pp_filter[i]),
1423                                   id->pp_filter[i]->p_owner->pp_pics[j] );
1424         }
1425         free( id->pp_filter[i]->p_owner );
1426
1427         vlc_object_destroy( id->pp_filter[i] );
1428     }
1429 }
1430
1431 static int transcode_video_process( sout_stream_t *p_stream,
1432                                     sout_stream_id_t *id,
1433                                     block_t *in, block_t **out )
1434 {
1435     sout_stream_sys_t *p_sys = p_stream->p_sys;
1436     int i_duplicate = 1, i;
1437     picture_t *p_pic;
1438     *out = NULL;
1439
1440     while( (p_pic = id->p_decoder->pf_decode_video( id->p_decoder, &in )) )
1441     {
1442         subpicture_t *p_subpic = 0;
1443
1444         if( p_sys->b_master_sync )
1445         {
1446             mtime_t i_video_drift;
1447             mtime_t i_master_drift = p_sys->i_master_drift;
1448             mtime_t i_pts;
1449
1450             if( !i_master_drift )
1451             {
1452                 /* No audio track ? */
1453                 p_sys->i_master_drift = i_master_drift = p_pic->date;
1454             }
1455
1456             i_pts = date_Get( &id->interpolated_pts ) + 1;
1457             i_video_drift = p_pic->date - i_pts;
1458             i_duplicate = 1;
1459
1460             /* Set the pts of the frame being encoded */
1461             p_pic->date = i_pts;
1462
1463             if( i_video_drift < i_master_drift - 50000 )
1464             {
1465 #if 0
1466                 msg_Dbg( p_stream, "dropping frame (%i)",
1467                          (int)(i_video_drift - i_master_drift) );
1468 #endif
1469                 p_pic->pf_release( p_pic );
1470                 return VLC_EGENERIC;
1471             }
1472             else if( i_video_drift > i_master_drift + 50000 )
1473             {
1474 #if 0
1475                 msg_Dbg( p_stream, "adding frame (%i)",
1476                          (int)(i_video_drift - i_master_drift) );
1477 #endif
1478                 i_duplicate = 2;
1479             }
1480         }
1481
1482         if( !id->p_encoder->p_module )
1483         {
1484             if( transcode_video_encoder_open( p_stream, id ) != VLC_SUCCESS )
1485             {
1486                 transcode_video_close( p_stream, id );
1487                 id->b_transcode = VLC_FALSE;
1488                 p_pic->pf_release( p_pic );
1489                 return VLC_EGENERIC;
1490             }
1491
1492             /* Deinterlace */
1493             if( p_stream->p_sys->b_deinterlace )
1494             {
1495                 id->pp_filter[id->i_filter] =
1496                     vlc_object_create( p_stream, VLC_OBJECT_FILTER );
1497                 vlc_object_attach( id->pp_filter[id->i_filter], p_stream );
1498
1499                 id->pp_filter[id->i_filter]->pf_vout_buffer_new =
1500                     video_new_buffer_filter;
1501                 id->pp_filter[id->i_filter]->pf_vout_buffer_del =
1502                     video_del_buffer_filter;
1503
1504                 id->pp_filter[id->i_filter]->fmt_in = id->p_decoder->fmt_out;
1505                 id->pp_filter[id->i_filter]->fmt_out = id->p_decoder->fmt_out;
1506                 id->pp_filter[id->i_filter]->p_module =
1507                     module_Need( id->pp_filter[id->i_filter],
1508                                  "video filter2", "deinterlace", 0 );
1509                 if( id->pp_filter[id->i_filter]->p_module )
1510                 {
1511                     id->pp_filter[id->i_filter]->p_owner =
1512                         malloc( sizeof(filter_owner_sys_t) );
1513                     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1514                         id->pp_filter[id->i_filter]->p_owner->pp_pics[i] = 0;
1515
1516                     id->i_filter++;
1517                 }
1518                 else
1519                 {
1520                     msg_Dbg( p_stream, "no video filter found" );
1521                     vlc_object_detach( id->pp_filter[id->i_filter] );
1522                     vlc_object_destroy( id->pp_filter[id->i_filter] );
1523                 }
1524             }
1525
1526             /* Check if we need a filter for chroma conversion or resizing */
1527             if( id->p_decoder->fmt_out.video.i_chroma !=
1528                 id->p_encoder->fmt_in.video.i_chroma ||
1529                 id->p_decoder->fmt_out.video.i_width !=
1530                 id->p_encoder->fmt_out.video.i_width ||
1531                 id->p_decoder->fmt_out.video.i_height !=
1532                 id->p_encoder->fmt_out.video.i_height ||
1533                 p_sys->i_crop_top > 0 || p_sys->i_crop_bottom > 0 ||
1534                 p_sys->i_crop_left > 0 || p_sys->i_crop_right > 0 )
1535             {
1536                 id->pp_filter[id->i_filter] =
1537                     vlc_object_create( p_stream, VLC_OBJECT_FILTER );
1538                 vlc_object_attach( id->pp_filter[id->i_filter], p_stream );
1539
1540                 id->pp_filter[id->i_filter]->pf_vout_buffer_new =
1541                     video_new_buffer_filter;
1542                 id->pp_filter[id->i_filter]->pf_vout_buffer_del =
1543                     video_del_buffer_filter;
1544
1545                 id->pp_filter[id->i_filter]->fmt_in = id->p_decoder->fmt_out;
1546                 id->pp_filter[id->i_filter]->fmt_out = id->p_encoder->fmt_in;
1547                 id->pp_filter[id->i_filter]->p_module =
1548                     module_Need( id->pp_filter[id->i_filter],
1549                                  "video filter2", 0, 0 );
1550                 if( id->pp_filter[id->i_filter]->p_module )
1551                 {
1552                     id->pp_filter[id->i_filter]->p_owner =
1553                         malloc( sizeof(filter_owner_sys_t) );
1554                     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1555                         id->pp_filter[id->i_filter]->p_owner->pp_pics[i] = 0;
1556
1557                     id->i_filter++;
1558                 }
1559                 else
1560                 {
1561                     msg_Dbg( p_stream, "no video filter found" );
1562                     vlc_object_detach( id->pp_filter[id->i_filter] );
1563                     vlc_object_destroy( id->pp_filter[id->i_filter] );
1564
1565                     transcode_video_close( p_stream, id );
1566                     id->b_transcode = VLC_FALSE;
1567                     p_pic->pf_release( p_pic );
1568                     return VLC_EGENERIC;
1569                 }
1570             }
1571         }
1572
1573         /* Run filter chain */
1574         for( i = 0; i < id->i_filter; i++ )
1575         {
1576             p_pic = id->pp_filter[i]->pf_video_filter(id->pp_filter[i], p_pic);
1577         }
1578
1579         /*
1580          * Encoding
1581          */
1582
1583         /* Check if we have a subpicture to overlay */
1584         if( p_sys->p_spu )
1585         {
1586             p_subpic = spu_SortSubpictures( p_sys->p_spu, p_pic->date );
1587             /* TODO: get another pic */
1588         }
1589
1590         /* Overlay subpicture */
1591         if( p_subpic )
1592         {
1593             int i_scale_width, i_scale_height;
1594             video_format_t *p_fmt;
1595
1596             i_scale_width = id->p_encoder->fmt_in.video.i_width * 1000 /
1597                 id->p_decoder->fmt_out.video.i_width;
1598             i_scale_height = id->p_encoder->fmt_in.video.i_height * 1000 /
1599                 id->p_decoder->fmt_out.video.i_height;
1600
1601             if( p_pic->i_refcount && !id->i_filter )
1602             {
1603                 /* We can't modify the picture, we need to duplicate it */
1604                 picture_t *p_tmp = video_new_buffer_decoder( id->p_decoder );
1605                 if( p_tmp )
1606                 {
1607                     vout_CopyPicture( p_stream, p_tmp, p_pic );
1608                     p_pic->pf_release( p_pic );
1609                     p_pic = p_tmp;
1610                 }
1611             }
1612
1613             if( id->i_filter )
1614                 p_fmt = &id->pp_filter[id->i_filter -1]->fmt_out.video;
1615             else
1616                 p_fmt = &id->p_decoder->fmt_out.video;
1617
1618             /* FIXME (shouldn't have to be done here) */
1619             p_fmt->i_sar_num = p_fmt->i_aspect *
1620                 p_fmt->i_height / p_fmt->i_width;
1621             p_fmt->i_sar_den = VOUT_ASPECT_FACTOR;
1622
1623             spu_RenderSubpictures( p_sys->p_spu, p_fmt, p_pic, p_pic, p_subpic,
1624                                    i_scale_width, i_scale_height );
1625         }
1626
1627         if( p_sys->i_threads >= 1 )
1628         {
1629             vlc_mutex_lock( &p_sys->lock_out );
1630             p_sys->pp_pics[p_sys->i_last_pic++] = p_pic;
1631             p_sys->i_last_pic %= PICTURE_RING_SIZE;
1632             *out = p_sys->p_buffers;
1633             p_sys->p_buffers = NULL;
1634             vlc_cond_signal( &p_sys->cond );
1635             vlc_mutex_unlock( &p_sys->lock_out );
1636         }
1637         else
1638         {
1639             block_t *p_block;
1640             p_block = id->p_encoder->pf_encode_video( id->p_encoder, p_pic );
1641             block_ChainAppend( out, p_block );
1642
1643             if( p_sys->b_master_sync )
1644                 date_Increment( &id->interpolated_pts, 1 );
1645
1646             if( p_sys->b_master_sync && i_duplicate > 1 )
1647             {
1648                 mtime_t i_pts = date_Get( &id->interpolated_pts ) + 1;
1649                 date_Increment( &id->interpolated_pts, 1 );
1650                 p_pic->date = i_pts;
1651                 p_block = id->p_encoder->pf_encode_video(id->p_encoder, p_pic);
1652                 block_ChainAppend( out, p_block );
1653             }
1654
1655             p_pic->pf_release( p_pic );
1656         }
1657     }
1658
1659     return VLC_SUCCESS;
1660 }
1661
1662 static int EncoderThread( sout_stream_sys_t *p_sys )
1663 {
1664     sout_stream_id_t *id = p_sys->id_video;
1665     picture_t *p_pic;
1666
1667     while( !p_sys->b_die && !p_sys->b_error )
1668     {
1669         block_t *p_block;
1670
1671         vlc_mutex_lock( &p_sys->lock_out );
1672         while( p_sys->i_last_pic == p_sys->i_first_pic )
1673         {
1674             vlc_cond_wait( &p_sys->cond, &p_sys->lock_out );
1675             if( p_sys->b_die || p_sys->b_error ) break;
1676         }
1677         if( p_sys->b_die || p_sys->b_error )
1678         {
1679             vlc_mutex_unlock( &p_sys->lock_out );
1680             break;
1681         }
1682
1683         p_pic = p_sys->pp_pics[p_sys->i_first_pic++];
1684         p_sys->i_first_pic %= PICTURE_RING_SIZE;
1685         vlc_mutex_unlock( &p_sys->lock_out );
1686
1687         p_block = id->p_encoder->pf_encode_video( id->p_encoder, p_pic );
1688         vlc_mutex_lock( &p_sys->lock_out );
1689         block_ChainAppend( &p_sys->p_buffers, p_block );
1690
1691         if( p_sys->b_master_sync )
1692             date_Increment( &id->interpolated_pts, 1 );
1693
1694 #if 0
1695         if( p_sys->b_master_sync && i_duplicate > 1 )
1696         {
1697             mtime_t i_pts = date_Get( &id->interpolated_pts ) + 1;
1698             date_Increment( &id->interpolated_pts, 1 );
1699             p_pic->date = i_pts;
1700             p_block = id->p_encoder->pf_encode_video(id->p_encoder, p_pic);
1701             block_ChainAppend( &p_sys->p_buffers, p_block );
1702         }
1703 #endif
1704         vlc_mutex_unlock( &p_sys->lock_out );
1705
1706         p_pic->pf_release( p_pic );
1707     }
1708
1709     while( p_sys->i_last_pic != p_sys->i_first_pic )
1710     {
1711         p_pic = p_sys->pp_pics[p_sys->i_first_pic++];
1712         p_sys->i_first_pic %= PICTURE_RING_SIZE;
1713
1714         p_pic->pf_release( p_pic );
1715     }
1716
1717     block_ChainRelease( p_sys->p_buffers );
1718
1719     return 0;
1720 }
1721
1722 struct picture_sys_t
1723 {
1724     vlc_object_t *p_owner;
1725 };
1726
1727 static void video_release_buffer( picture_t *p_pic )
1728 {
1729     if( p_pic && !p_pic->i_refcount && p_pic->pf_release && p_pic->p_sys )
1730     {
1731         video_del_buffer_decoder( (decoder_t *)p_pic->p_sys->p_owner, p_pic );
1732     }
1733     else if( p_pic && p_pic->i_refcount > 0 ) p_pic->i_refcount--;
1734 }
1735
1736 static picture_t *video_new_buffer( vlc_object_t *p_this, picture_t **pp_ring )
1737 {
1738     decoder_t *p_dec = (decoder_t *)p_this;
1739     picture_t *p_pic;
1740     int i;
1741
1742     /* Find an empty space in the picture ring buffer */
1743     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1744     {
1745         if( pp_ring[i] != 0 && pp_ring[i]->i_status == DESTROYED_PICTURE )
1746         {
1747             pp_ring[i]->i_status = RESERVED_PICTURE;
1748             return pp_ring[i];
1749         }
1750     }
1751     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1752     {
1753         if( pp_ring[i] == 0 ) break;
1754     }
1755
1756     if( i == PICTURE_RING_SIZE )
1757     {
1758         msg_Err( p_this, "decoder/filter is leaking pictures, "
1759                  "resetting its ring buffer" );
1760
1761         for( i = 0; i < PICTURE_RING_SIZE; i++ )
1762         {
1763             pp_ring[i]->pf_release( pp_ring[i] );
1764         }
1765
1766         i = 0;
1767     }
1768
1769     p_pic = malloc( sizeof(picture_t) );
1770     p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
1771     vout_AllocatePicture( VLC_OBJECT(p_dec), p_pic,
1772                           p_dec->fmt_out.video.i_chroma,
1773                           p_dec->fmt_out.video.i_width,
1774                           p_dec->fmt_out.video.i_height,
1775                           p_dec->fmt_out.video.i_aspect );
1776
1777     if( !p_pic->i_planes )
1778     {
1779         free( p_pic );
1780         return 0;
1781     }
1782
1783     p_pic->pf_release = video_release_buffer;
1784     p_pic->p_sys = malloc( sizeof(picture_sys_t) );
1785     p_pic->p_sys->p_owner = p_this;
1786     p_pic->i_status = RESERVED_PICTURE;
1787
1788     pp_ring[i] = p_pic;
1789
1790     return p_pic;
1791 }
1792
1793 static picture_t *video_new_buffer_decoder( decoder_t *p_dec )
1794 {
1795     return video_new_buffer( VLC_OBJECT(p_dec),
1796                              p_dec->p_owner->pp_pics );
1797 }
1798
1799 static picture_t *video_new_buffer_filter( filter_t *p_filter )
1800 {
1801     return video_new_buffer( VLC_OBJECT(p_filter),
1802                              p_filter->p_owner->pp_pics );
1803 }
1804
1805 static void video_del_buffer( vlc_object_t *p_this, picture_t *p_pic )
1806 {
1807     if( p_pic && p_pic->p_data_orig ) free( p_pic->p_data_orig );
1808     if( p_pic && p_pic->p_sys ) free( p_pic->p_sys );
1809     if( p_pic ) free( p_pic );
1810 }
1811
1812 static void video_del_buffer_decoder( decoder_t *p_decoder, picture_t *p_pic )
1813 {
1814     p_pic->i_refcount = 0;
1815     p_pic->i_status = DESTROYED_PICTURE;
1816 }
1817
1818 static void video_del_buffer_filter( filter_t *p_filter, picture_t *p_pic )
1819 {
1820     p_pic->i_refcount = 0;
1821     p_pic->i_status = DESTROYED_PICTURE;
1822 }
1823
1824 static void video_link_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
1825 {
1826     p_pic->i_refcount++;
1827 }
1828
1829 static void video_unlink_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
1830 {
1831     video_release_buffer( p_pic );
1832 }
1833
1834 /*
1835  * SPU
1836  */
1837 static subpicture_t *spu_new_buffer( decoder_t * );
1838 static void spu_del_buffer( decoder_t *, subpicture_t * );
1839
1840 static int transcode_spu_new( sout_stream_t *p_stream, sout_stream_id_t *id )
1841 {
1842     sout_stream_sys_t *p_sys = p_stream->p_sys;
1843
1844     /*
1845      * Open decoder
1846      */
1847
1848     /* Initialization of decoder structures */
1849     id->p_decoder->pf_spu_buffer_new = spu_new_buffer;
1850     id->p_decoder->pf_spu_buffer_del = spu_del_buffer;
1851     id->p_decoder->p_owner = (decoder_owner_sys_t *)p_stream;
1852     //id->p_decoder->p_cfg = p_sys->p_spu_cfg;
1853
1854     id->p_decoder->p_module =
1855         module_Need( id->p_decoder, "decoder", "$codec", 0 );
1856
1857     if( !id->p_decoder->p_module )
1858     {
1859         msg_Err( p_stream, "cannot find decoder" );
1860         return VLC_EGENERIC;
1861     }
1862
1863     if( !p_sys->b_soverlay )
1864     {
1865         /*
1866          * Open encoder
1867          */
1868
1869         /* Initialization of encoder format structures */
1870         es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
1871                         id->p_decoder->fmt_in.i_codec );
1872
1873         id->p_encoder->p_cfg = p_sys->p_spu_cfg;
1874
1875         id->p_encoder->p_module =
1876             module_Need( id->p_encoder, "encoder", p_sys->psz_senc, VLC_TRUE );
1877
1878         if( !id->p_encoder->p_module )
1879         {
1880             module_Unneed( id->p_decoder, id->p_decoder->p_module );
1881             msg_Err( p_stream, "cannot find encoder" );
1882             return VLC_EGENERIC;
1883         }
1884     }
1885
1886     if( !p_sys->p_spu )
1887     {
1888         p_sys->p_spu = spu_Create( p_stream );
1889         spu_Init( p_sys->p_spu );
1890     }
1891
1892     return VLC_SUCCESS;
1893 }
1894
1895 static void transcode_spu_close( sout_stream_t *p_stream, sout_stream_id_t *id)
1896 {
1897     /* Close decoder */
1898     if( id->p_decoder->p_module )
1899         module_Unneed( id->p_decoder, id->p_decoder->p_module );
1900
1901     /* Close encoder */
1902     if( id->p_encoder->p_module )
1903         module_Unneed( id->p_encoder, id->p_encoder->p_module );
1904 }
1905
1906 static int transcode_spu_process( sout_stream_t *p_stream,
1907                                   sout_stream_id_t *id,
1908                                   block_t *in, block_t **out )
1909 {
1910     sout_stream_sys_t *p_sys = p_stream->p_sys;
1911     subpicture_t *p_subpic;
1912     *out = NULL;
1913
1914     p_subpic = id->p_decoder->pf_decode_sub( id->p_decoder, &in );
1915     if( !p_subpic ) return VLC_EGENERIC;
1916
1917     if( p_sys->b_master_sync && p_sys->i_master_drift )
1918     {
1919         p_subpic->i_start -= p_sys->i_master_drift;
1920         if( p_subpic->i_stop ) p_subpic->i_stop -= p_sys->i_master_drift;
1921     }
1922
1923     if( p_sys->b_soverlay )
1924     {
1925         spu_DisplaySubpicture( p_sys->p_spu, p_subpic );
1926     }
1927     else
1928     {
1929         block_t *p_block;
1930
1931         p_block = id->p_encoder->pf_encode_sub( id->p_encoder, p_subpic );
1932         spu_del_buffer( id->p_decoder, p_subpic );
1933
1934         if( p_block )
1935         {
1936             block_ChainAppend( out, p_block );
1937             return VLC_SUCCESS;
1938         }
1939     }
1940
1941     return VLC_EGENERIC;
1942 }
1943
1944 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
1945 {
1946     sout_stream_t *p_stream = (sout_stream_t *)p_dec->p_owner;
1947     return spu_CreateSubpicture( p_stream->p_sys->p_spu );
1948 }
1949
1950 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
1951 {
1952     sout_stream_t *p_stream = (sout_stream_t *)p_dec->p_owner;
1953     spu_DestroySubpicture( p_stream->p_sys->p_spu, p_subpic );
1954 }