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_scodec );
 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 =
 675                 p_sys->f_fps * 1001 + 0.5;
 676             id->p_encoder->fmt_out.video.i_frame_rate_base = 1001;
 677         }
 678     }
 679     else if( p_fmt->i_cat == SPU_ES && (p_sys->i_scodec || p_sys->psz_senc) )
 680     {
 681         msg_Dbg( p_stream, "creating subtitles transcoding from fcc=`%4.4s' "
 682                  "to fcc=`%4.4s'", (char*)&p_fmt->i_codec,
 683                  (char*)&p_sys->i_scodec );
 684
 685         /* Complete destination format */
 686         id->p_encoder->fmt_out.i_codec = p_sys->i_scodec;
 687
 688         /* build decoder -> filter -> encoder */
 689         if( transcode_spu_new( p_stream, id ) )
 690         {
 691             msg_Err( p_stream, "cannot create subtitles chain" );
 692             goto error;
 693         }
 694
 695         /* open output stream */
 696         id->id = p_sys->p_out->pf_add( p_sys->p_out, &id->p_encoder->fmt_out );
 697         id->b_transcode = VLC_TRUE;
 698
 699         if( !id->id ) goto error;
 700     }
 701     else if( p_fmt->i_cat == SPU_ES && p_sys->b_soverlay )
 702     {
 703         msg_Dbg( p_stream, "subtitles (fcc=`%4.4s') overlaying",
 704                  (char*)&p_fmt->i_codec );
 705
 706         id->b_transcode = VLC_TRUE;
 707
 708         /* Build decoder -> filter -> overlaying chain */
 709         if( transcode_spu_new( p_stream, id ) )
 710         {
 711             msg_Err( p_stream, "cannot create subtitles chain" );
 712             goto error;
 713         }
 714     }
 715     else
 716     {
 717         msg_Dbg( p_stream, "not transcoding a stream (fcc=`%4.4s')",
 718                  (char*)&p_fmt->i_codec );
 719         id->id = p_sys->p_out->pf_add( p_sys->p_out, p_fmt );
 720         id->b_transcode = VLC_FALSE;
 721
 722         if( !id->id ) goto error;
 723     }
 724
 725     return id;
 726
 727  error:
 728     if( id->p_decoder )
 729     {
 730         vlc_object_detach( id->p_decoder );
 731         vlc_object_destroy( id->p_decoder );
 732     }
 733
 734     if( id->p_encoder )
 735     {
 736         vlc_object_detach( id->p_encoder );
 737         vlc_object_destroy( id->p_encoder );
 738     }
 739
 740     free( id );
 741     return NULL;
 742 }
 743
 744 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
 745 {
 746     sout_stream_sys_t *p_sys = p_stream->p_sys;
 747
 748     if( id->b_transcode )
 749     {
 750         switch( id->p_decoder->fmt_in.i_cat )
 751         {
 752         case AUDIO_ES:
 753             transcode_audio_close( p_stream, id );
 754             break;
 755         case VIDEO_ES:
 756             transcode_video_close( p_stream, id );
 757             break;
 758         case SPU_ES:
 759             transcode_spu_close( p_stream, id );
 760             break;
 761         }
 762     }
 763
 764     if( id->id ) p_sys->p_out->pf_del( p_sys->p_out, id->id );
 765
 766     if( id->p_decoder )
 767     {
 768         vlc_object_detach( id->p_decoder );
 769         vlc_object_destroy( id->p_decoder );
 770     }
 771
 772     if( id->p_encoder )
 773     {
 774         vlc_object_detach( id->p_encoder );
 775         vlc_object_destroy( id->p_encoder );
 776     }
 777
 778     free( id );
 779
 780     return VLC_SUCCESS;
 781 }
 782
 783 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
 784                  block_t *p_buffer )
 785 {
 786     sout_stream_sys_t *p_sys = p_stream->p_sys;
 787     block_t *p_out;
 788
 789     if( !id->b_transcode && id->id )
 790     {
 791         if( p_sys->b_master_sync && p_sys->i_master_drift )
 792         {
 793             if( p_buffer->i_dts > 0 )
 794             {
 795                 p_buffer->i_dts -= p_sys->i_master_drift;
 796                 if( p_buffer->i_dts < 0 )
 797                 {
 798                     block_Release( p_buffer );
 799                     return VLC_EGENERIC;
 800                 }
 801             }
 802             if( p_buffer->i_pts > 0 )
 803             {
 804                 p_buffer->i_pts -= p_sys->i_master_drift;
 805                 if( p_buffer->i_pts < 0 )
 806                 {
 807                     block_Release( p_buffer );
 808                     return VLC_EGENERIC;
 809                 }
 810             }
 811         }
 812
 813         return p_sys->p_out->pf_send( p_sys->p_out, id->id, p_buffer );
 814     }
 815     else if( !id->b_transcode )
 816     {
 817         block_Release( p_buffer );
 818         return VLC_EGENERIC;
 819     }
 820
 821     switch( id->p_decoder->fmt_in.i_cat )
 822     {
 823     case AUDIO_ES:
 824         transcode_audio_process( p_stream, id, p_buffer, &p_out );
 825         break;
 826
 827     case VIDEO_ES:
 828         if( transcode_video_process( p_stream, id, p_buffer, &p_out )
 829             != VLC_SUCCESS )
 830         {
 831             return VLC_EGENERIC;
 832         }
 833         break;
 834
 835     case SPU_ES:
 836         if( transcode_spu_process( p_stream, id, p_buffer, &p_out ) !=
 837             VLC_SUCCESS )
 838         {
 839             return VLC_EGENERIC;
 840         }
 841         break;
 842
 843     default:
 844         block_Release( p_buffer );
 845         break;
 846     }
 847
 848     if( p_out ) return p_sys->p_out->pf_send( p_sys->p_out, id->id, p_out );
 849     return VLC_SUCCESS;
 850 }
 851
 852 /****************************************************************************
 853  * decoder reencoder part
 854  ****************************************************************************/
 855 int audio_BitsPerSample( vlc_fourcc_t i_format )
 856 {
 857     switch( i_format )
 858     {
 859     case VLC_FOURCC('u','8',' ',' '):
 860     case VLC_FOURCC('s','8',' ',' '):
 861         return 8;
 862
 863     case VLC_FOURCC('u','1','6','l'):
 864     case VLC_FOURCC('s','1','6','l'):
 865     case VLC_FOURCC('u','1','6','b'):
 866     case VLC_FOURCC('s','1','6','b'):
 867         return 16;
 868
 869     case VLC_FOURCC('u','2','4','l'):
 870     case VLC_FOURCC('s','2','4','l'):
 871     case VLC_FOURCC('u','2','4','b'):
 872     case VLC_FOURCC('s','2','4','b'):
 873         return 24;
 874
 875     case VLC_FOURCC('u','3','2','l'):
 876     case VLC_FOURCC('s','3','2','l'):
 877     case VLC_FOURCC('u','3','2','b'):
 878     case VLC_FOURCC('s','3','2','b'):
 879     case VLC_FOURCC('f','l','3','2'):
 880     case VLC_FOURCC('f','i','3','2'):
 881         return 32;
 882
 883     case VLC_FOURCC('f','l','6','4'):
 884         return 64;
 885     }
 886
 887     return 0;
 888 }
 889
 890 static filter_t *transcode_audio_filter_new( sout_stream_t *p_stream,
 891                                              sout_stream_id_t *id,
 892                                              es_format_t *p_fmt_in,
 893                                              es_format_t *p_fmt_out )
 894 {
 895     filter_t *p_filter = vlc_object_create( p_stream, VLC_OBJECT_FILTER );
 896
 897     vlc_object_attach( p_filter, p_stream );
 898     p_filter->pf_audio_buffer_new = __block_New;
 899
 900     p_filter->fmt_in = *p_fmt_in;
 901     p_filter->fmt_out = *p_fmt_out;
 902
 903     p_filter->p_module = module_Need( p_filter, "audio filter2", 0, 0 );
 904     if( p_filter->p_module )
 905     {
 906         p_filter->fmt_out.audio.i_bitspersample =
 907             audio_BitsPerSample( p_filter->fmt_out.i_codec );
 908         *p_fmt_in = p_filter->fmt_out;
 909     }
 910     else
 911     {
 912         vlc_object_detach( p_filter );
 913         vlc_object_destroy( p_filter );
 914         p_filter = 0;
 915     }
 916
 917     return p_filter;
 918 }
 919
 920 static int transcode_audio_new( sout_stream_t *p_stream,
 921                                 sout_stream_id_t *id )
 922 {
 923     sout_stream_sys_t *p_sys = p_stream->p_sys;
 924     es_format_t fmt_last;
 925     int i_pass = 6;
 926
 927     /*
 928      * Open decoder
 929      */
 930
 931     /* Initialization of decoder structures */
 932     id->p_decoder->pf_decode_audio = 0;
 933     id->p_decoder->pf_aout_buffer_new = audio_new_buffer;
 934     id->p_decoder->pf_aout_buffer_del = audio_del_buffer;
 935     //id->p_decoder->p_cfg = p_sys->p_video_cfg;
 936
 937     id->p_decoder->p_module =
 938         module_Need( id->p_decoder, "decoder", "$codec", 0 );
 939
 940     if( !id->p_decoder->p_module )
 941     {
 942         msg_Err( p_stream, "cannot find decoder" );
 943         return VLC_EGENERIC;
 944     }
 945     id->p_decoder->fmt_out.audio.i_bitspersample =
 946         audio_BitsPerSample( id->p_decoder->fmt_out.i_codec );
 947     fmt_last = id->p_decoder->fmt_out;
 948     /* FIX decoders so we don't have to do this */
 949     fmt_last.audio.i_rate = id->p_decoder->fmt_in.audio.i_rate;
 950
 951     /*
 952      * Open encoder
 953      */
 954
 955     /* Initialization of encoder format structures */
 956     es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
 957                     id->p_decoder->fmt_out.i_codec );
 958     id->p_encoder->fmt_in.audio.i_format = id->p_decoder->fmt_out.i_codec;
 959
 960     /* Sanity check for audio channels */
 961     id->p_encoder->fmt_out.audio.i_channels =
 962         __MIN( id->p_encoder->fmt_out.audio.i_channels,
 963                id->p_decoder->fmt_out.audio.i_channels );
 964     if( id->p_decoder->fmt_out.audio.i_channels ==
 965         id->p_encoder->fmt_out.audio.i_channels )
 966         id->p_encoder->fmt_out.audio.i_physical_channels =
 967             id->p_encoder->fmt_out.audio.i_original_channels =
 968                 id->p_decoder->fmt_out.audio.i_physical_channels;
 969     else
 970         id->p_encoder->fmt_out.audio.i_physical_channels =
 971             id->p_encoder->fmt_out.audio.i_original_channels =
 972                 pi_channels_maps[id->p_encoder->fmt_out.audio.i_channels];
 973
 974     /* Initialization of encoder format structures */
 975     es_format_Init( &id->p_encoder->fmt_in, AUDIO_ES, AOUT_FMT_S16_NE );
 976     id->p_encoder->fmt_in.audio.i_format = AOUT_FMT_S16_NE;
 977     id->p_encoder->fmt_in.audio.i_rate = id->p_encoder->fmt_out.audio.i_rate;
 978     id->p_encoder->fmt_in.audio.i_physical_channels =
 979         id->p_encoder->fmt_in.audio.i_original_channels =
 980             id->p_encoder->fmt_out.audio.i_physical_channels;
 981     id->p_encoder->fmt_in.audio.i_channels =
 982         id->p_encoder->fmt_out.audio.i_channels;
 983     id->p_encoder->fmt_in.audio.i_bitspersample =
 984         audio_BitsPerSample( id->p_encoder->fmt_in.i_codec );
 985
 986     id->p_encoder->p_cfg = p_stream->p_sys->p_audio_cfg;
 987
 988     id->p_encoder->p_module =
 989         module_Need( id->p_encoder, "encoder", p_sys->psz_aenc, VLC_TRUE );
 990     if( !id->p_encoder->p_module )
 991     {
 992         msg_Err( p_stream, "cannot find encoder" );
 993         module_Unneed( id->p_decoder, id->p_decoder->p_module );
 994         id->p_decoder->p_module = 0;
 995         return VLC_EGENERIC;
 996     }
 997     id->p_encoder->fmt_in.audio.i_format = id->p_encoder->fmt_in.i_codec;
 998     id->p_encoder->fmt_in.audio.i_bitspersample =
 999         audio_BitsPerSample( id->p_encoder->fmt_in.i_codec );
1000
1001     /* Load conversion filters */
1002     if( fmt_last.audio.i_channels != id->p_encoder->fmt_in.audio.i_channels ||
1003         fmt_last.audio.i_rate != id->p_encoder->fmt_in.audio.i_rate )
1004     {
1005         /* We'll have to go through fl32 first */
1006         es_format_t fmt_out = id->p_encoder->fmt_in;
1007         fmt_out.i_codec = fmt_out.audio.i_format = VLC_FOURCC('f','l','3','2');
1008
1009         id->pp_filter[id->i_filter] =
1010             transcode_audio_filter_new( p_stream, id, &fmt_last, &fmt_out );
1011
1012         if( id->pp_filter[id->i_filter] ) id->i_filter++;
1013     }
1014
1015     while( i_pass-- )
1016     {
1017         if( fmt_last.audio.i_channels !=
1018             id->p_encoder->fmt_in.audio.i_channels ||
1019             fmt_last.audio.i_rate != id->p_encoder->fmt_in.audio.i_rate ||
1020             fmt_last.i_codec != id->p_encoder->fmt_in.i_codec )
1021         {
1022             id->pp_filter[id->i_filter] =
1023                 transcode_audio_filter_new( p_stream, id, &fmt_last,
1024                                             &id->p_encoder->fmt_in );
1025
1026             if( id->pp_filter[id->i_filter] ) id->i_filter++;
1027             else break;
1028         }
1029     }
1030
1031     /* Final checks to see if conversions were successful */
1032     if( fmt_last.i_codec != id->p_encoder->fmt_in.i_codec )
1033     {
1034         msg_Dbg( p_stream, "no audio filter found (%4.4s->%4.4s)",
1035                  (char *)&fmt_last.i_codec,
1036                  (char *)&id->p_encoder->fmt_in.i_codec );
1037         transcode_audio_close( p_stream, id );
1038         return VLC_EGENERIC;
1039     }
1040
1041     if( fmt_last.audio.i_channels != id->p_encoder->fmt_in.audio.i_channels )
1042     {
1043         msg_Dbg( p_stream, "no audio filter found for mixing from"
1044                  " %i to %i channels", fmt_last.audio.i_channels,
1045                  id->p_encoder->fmt_in.audio.i_channels );
1046
1047         id->p_encoder->fmt_in.audio.i_channels = fmt_last.audio.i_channels;
1048         id->p_encoder->fmt_out.audio.i_channels = fmt_last.audio.i_channels;
1049
1050         id->p_encoder->fmt_in.audio.i_physical_channels =
1051             id->p_encoder->fmt_in.audio.i_original_channels =
1052                 fmt_last.audio.i_physical_channels;
1053         id->p_encoder->fmt_out.audio.i_physical_channels =
1054             id->p_encoder->fmt_out.audio.i_original_channels =
1055                 fmt_last.audio.i_physical_channels;
1056     }
1057
1058     if( fmt_last.audio.i_rate != id->p_encoder->fmt_in.audio.i_rate )
1059     {
1060         msg_Dbg( p_stream, "no audio filter found for resampling from"
1061                  " %iHz to %iHz", fmt_last.audio.i_rate,
1062                  id->p_encoder->fmt_in.audio.i_rate );
1063         id->p_encoder->fmt_in.audio.i_rate = fmt_last.audio.i_rate;
1064         id->p_encoder->fmt_out.audio.i_rate = fmt_last.audio.i_rate;
1065     }
1066
1067     /* FIXME: Hack for mp3 transcoding support */
1068     if( id->p_encoder->fmt_out.i_codec == VLC_FOURCC( 'm','p','3',' ' ) )
1069         id->p_encoder->fmt_out.i_codec = VLC_FOURCC( 'm','p','g','a' );
1070
1071     return VLC_SUCCESS;
1072 }
1073
1074 static void transcode_audio_close( sout_stream_t *p_stream,
1075                                    sout_stream_id_t *id )
1076 {
1077     int i;
1078
1079     /* Close decoder */
1080     if( id->p_decoder->p_module )
1081         module_Unneed( id->p_decoder, id->p_decoder->p_module );
1082     id->p_decoder->p_module = 0;
1083
1084     /* Close encoder */
1085     if( id->p_encoder->p_module )
1086         module_Unneed( id->p_encoder, id->p_encoder->p_module );
1087     id->p_encoder->p_module = 0;
1088
1089     /* Close filters */
1090     for( i = 0; i < id->i_filter; i++ )
1091     {
1092         vlc_object_detach( id->pp_filter[i] );
1093         if( id->pp_filter[i]->p_module )
1094             module_Unneed( id->pp_filter[i], id->pp_filter[i]->p_module );
1095         vlc_object_destroy( id->pp_filter[i] );
1096     }
1097 }
1098
1099 static int transcode_audio_process( sout_stream_t *p_stream,
1100                                     sout_stream_id_t *id,
1101                                     block_t *in, block_t **out )
1102 {
1103     sout_stream_sys_t *p_sys = p_stream->p_sys;
1104     aout_buffer_t *p_audio_buf;
1105     block_t *p_block, *p_audio_block;
1106     int i;
1107     *out = NULL;
1108
1109     while( (p_audio_buf = id->p_decoder->pf_decode_audio( id->p_decoder,
1110                                                           &in )) )
1111     {
1112         if( p_sys->b_master_sync )
1113         {
1114             mtime_t i_dts = date_Get( &id->interpolated_pts ) + 1;
1115             p_sys->i_master_drift = p_audio_buf->start_date - i_dts;
1116             date_Increment( &id->interpolated_pts, p_audio_buf->i_nb_samples );
1117             p_audio_buf->start_date -= p_sys->i_master_drift;
1118             p_audio_buf->end_date -= p_sys->i_master_drift;
1119         }
1120
1121         p_audio_block = p_audio_buf->p_sys;
1122         p_audio_block->i_buffer = p_audio_buf->i_nb_bytes;
1123         p_audio_block->i_dts = p_audio_block->i_pts =
1124             p_audio_buf->start_date;
1125         p_audio_block->i_length = p_audio_buf->end_date -
1126             p_audio_buf->start_date;
1127         p_audio_block->i_samples = p_audio_buf->i_nb_samples;
1128
1129         /* Run filter chain */
1130         for( i = 0; i < id->i_filter; i++ )
1131         {
1132             p_audio_block =
1133                 id->pp_filter[i]->pf_audio_filter( id->pp_filter[i],
1134                                                    p_audio_block );
1135         }
1136
1137         p_audio_buf->p_buffer = p_audio_block->p_buffer;
1138         p_audio_buf->i_nb_bytes = p_audio_block->i_buffer;
1139         p_audio_buf->i_nb_samples = p_audio_block->i_samples;
1140         p_audio_buf->start_date = p_audio_block->i_dts;
1141         p_audio_buf->end_date = p_audio_block->i_dts + p_audio_block->i_length;
1142
1143         p_block = id->p_encoder->pf_encode_audio( id->p_encoder, p_audio_buf );
1144         block_ChainAppend( out, p_block );
1145         block_Release( p_audio_block );
1146         free( p_audio_buf );
1147     }
1148
1149     return VLC_SUCCESS;
1150 }
1151
1152 static void audio_release_buffer( aout_buffer_t *p_buffer )
1153 {
1154     if( p_buffer && p_buffer->p_sys ) block_Release( p_buffer->p_sys );
1155     if( p_buffer ) free( p_buffer );
1156 }
1157
1158 static aout_buffer_t *audio_new_buffer( decoder_t *p_dec, int i_samples )
1159 {
1160     aout_buffer_t *p_buffer;
1161     block_t *p_block;
1162     int i_size;
1163
1164     if( p_dec->fmt_out.audio.i_bitspersample )
1165     {
1166         i_size = i_samples * p_dec->fmt_out.audio.i_bitspersample / 8 *
1167             p_dec->fmt_out.audio.i_channels;
1168     }
1169     else if( p_dec->fmt_out.audio.i_bytes_per_frame &&
1170              p_dec->fmt_out.audio.i_frame_length )
1171     {
1172         i_size = i_samples * p_dec->fmt_out.audio.i_bytes_per_frame /
1173             p_dec->fmt_out.audio.i_frame_length;
1174     }
1175     else
1176     {
1177         i_size = i_samples * 4 * p_dec->fmt_out.audio.i_channels;
1178     }
1179
1180     p_buffer = malloc( sizeof(aout_buffer_t) );
1181     p_buffer->pf_release = audio_release_buffer;
1182     p_buffer->p_sys = p_block = block_New( p_dec, i_size );
1183
1184     p_buffer->p_buffer = p_block->p_buffer;
1185     p_buffer->i_size = p_buffer->i_nb_bytes = p_block->i_buffer;
1186     p_buffer->i_nb_samples = i_samples;
1187     p_block->i_samples = i_samples;
1188
1189     return p_buffer;
1190 }
1191
1192 static void audio_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
1193 {
1194     if( p_buffer && p_buffer->p_sys ) block_Release( p_buffer->p_sys );
1195     if( p_buffer ) free( p_buffer );
1196 }
1197
1198 /*
1199  * video
1200  */
1201 static int transcode_video_new( sout_stream_t *p_stream, sout_stream_id_t *id )
1202 {
1203     sout_stream_sys_t *p_sys = p_stream->p_sys;
1204     int i;
1205
1206     /*
1207      * Open decoder
1208      */
1209
1210     /* Initialization of decoder structures */
1211     id->p_decoder->pf_decode_video = 0;
1212     id->p_decoder->pf_vout_buffer_new = video_new_buffer_decoder;
1213     id->p_decoder->pf_vout_buffer_del = video_del_buffer_decoder;
1214     id->p_decoder->pf_picture_link    = video_link_picture_decoder;
1215     id->p_decoder->pf_picture_unlink  = video_unlink_picture_decoder;
1216     id->p_decoder->p_owner = malloc( sizeof(decoder_owner_sys_t) );
1217     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1218         id->p_decoder->p_owner->pp_pics[i] = 0;
1219     //id->p_decoder->p_cfg = p_sys->p_video_cfg;
1220
1221     id->p_decoder->p_module =
1222         module_Need( id->p_decoder, "decoder", "$codec", 0 );
1223
1224     if( !id->p_decoder->p_module )
1225     {
1226         msg_Err( p_stream, "cannot find decoder" );
1227         return VLC_EGENERIC;
1228     }
1229
1230     /*
1231      * Open encoder.
1232      * Because some info about the decoded input will only be available
1233      * once the first frame is decoded, we actually only test the availability
1234      * of the encoder here.
1235      */
1236
1237     /* Initialization of encoder format structures */
1238     es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
1239                     id->p_decoder->fmt_out.i_codec );
1240     id->p_encoder->fmt_in.video.i_chroma = id->p_decoder->fmt_out.i_codec;
1241
1242     /* The dimensions will be set properly later on.
1243      * Just put sensible values so we can test an encoder is available. */
1244     id->p_encoder->fmt_in.video.i_width =
1245         id->p_encoder->fmt_out.video.i_width ?
1246         id->p_encoder->fmt_out.video.i_width :
1247         id->p_decoder->fmt_in.video.i_width ?
1248         id->p_decoder->fmt_in.video.i_width : 16;
1249     id->p_encoder->fmt_in.video.i_height =
1250         id->p_encoder->fmt_out.video.i_height ?
1251         id->p_encoder->fmt_out.video.i_height :
1252         id->p_decoder->fmt_in.video.i_height ?
1253         id->p_decoder->fmt_in.video.i_height : 16;
1254     id->p_encoder->fmt_in.video.i_frame_rate = 25;
1255     id->p_encoder->fmt_in.video.i_frame_rate_base = 1;
1256
1257     id->p_encoder->i_threads = p_sys->i_threads;
1258     id->p_encoder->p_cfg = p_sys->p_video_cfg;
1259
1260     id->p_encoder->p_module =
1261         module_Need( id->p_encoder, "encoder", p_sys->psz_venc, VLC_TRUE );
1262     if( !id->p_encoder->p_module )
1263     {
1264         msg_Err( p_stream, "cannot find encoder" );
1265         module_Unneed( id->p_decoder, id->p_decoder->p_module );
1266         id->p_decoder->p_module = 0;
1267         return VLC_EGENERIC;
1268     }
1269
1270     /* Close the encoder.
1271      * We'll open it only when we have the first frame. */
1272     module_Unneed( id->p_encoder, id->p_encoder->p_module );
1273     id->p_encoder->p_module = NULL;
1274
1275     if( p_sys->i_threads >= 1 )
1276     {
1277         p_sys->id_video = id;
1278         vlc_mutex_init( p_stream, &p_sys->lock_out );
1279         vlc_cond_init( p_stream, &p_sys->cond );
1280         memset( p_sys->pp_pics, 0, sizeof(p_sys->pp_pics) );
1281         p_sys->i_first_pic = 0;
1282         p_sys->i_last_pic = 0;
1283         p_sys->p_buffers = NULL;
1284         p_sys->b_die = p_sys->b_error = 0;
1285         if( vlc_thread_create( p_sys, "encoder", EncoderThread,
1286                                VLC_THREAD_PRIORITY_VIDEO, VLC_FALSE ) )
1287         {
1288             msg_Err( p_stream, "cannot spawn encoder thread" );
1289             module_Unneed( id->p_decoder, id->p_decoder->p_module );
1290             id->p_decoder->p_module = 0;
1291             return VLC_EGENERIC;
1292         }
1293     }
1294
1295     date_Set( &id->interpolated_pts, 0 );
1296
1297     return VLC_SUCCESS;
1298 }
1299
1300 static int transcode_video_encoder_open( sout_stream_t *p_stream,
1301                                          sout_stream_id_t *id )
1302 {
1303     sout_stream_sys_t *p_sys = p_stream->p_sys;
1304
1305     /* Hack because of the copy packetizer which can fail to detect the
1306      * proper size (which forces us to wait until the 1st frame
1307      * is decoded) */
1308     int i_width = id->p_decoder->fmt_out.video.i_width -
1309         p_sys->i_crop_left - p_sys->i_crop_right;
1310     int i_height = id->p_decoder->fmt_out.video.i_height -
1311         p_sys->i_crop_top - p_sys->i_crop_bottom;
1312
1313     if( id->p_encoder->fmt_out.video.i_width <= 0 &&
1314         id->p_encoder->fmt_out.video.i_height <= 0 && p_sys->f_scale )
1315     {
1316         /* Apply the scaling */
1317         id->p_encoder->fmt_out.video.i_width = i_width * p_sys->f_scale;
1318         id->p_encoder->fmt_out.video.i_height = i_height * p_sys->f_scale;
1319     }
1320     else if( id->p_encoder->fmt_out.video.i_width > 0 &&
1321              id->p_encoder->fmt_out.video.i_height <= 0 )
1322     {
1323         id->p_encoder->fmt_out.video.i_height =
1324             id->p_encoder->fmt_out.video.i_width / (double)i_width * i_height;
1325     }
1326     else if( id->p_encoder->fmt_out.video.i_width <= 0 &&
1327              id->p_encoder->fmt_out.video.i_height > 0 )
1328     {
1329         id->p_encoder->fmt_out.video.i_width =
1330             id->p_encoder->fmt_out.video.i_height / (double)i_height * i_width;
1331     }
1332
1333     /* Make sure the size is at least a multiple of 2 */
1334     id->p_encoder->fmt_out.video.i_width =
1335         (id->p_encoder->fmt_out.video.i_width + 1) >> 1 << 1;
1336     id->p_encoder->fmt_out.video.i_height =
1337         (id->p_encoder->fmt_out.video.i_height + 1) >> 1 << 1;
1338
1339     id->p_encoder->fmt_in.video.i_width =
1340         id->p_encoder->fmt_out.video.i_width;
1341     id->p_encoder->fmt_in.video.i_height =
1342         id->p_encoder->fmt_out.video.i_height;
1343
1344     if( !id->p_encoder->fmt_out.video.i_frame_rate ||
1345         !id->p_encoder->fmt_out.video.i_frame_rate_base )
1346     {
1347         if( id->p_decoder->fmt_out.video.i_frame_rate &&
1348             id->p_decoder->fmt_out.video.i_frame_rate_base )
1349         {
1350             id->p_encoder->fmt_out.video.i_frame_rate =
1351                 id->p_decoder->fmt_out.video.i_frame_rate;
1352             id->p_encoder->fmt_out.video.i_frame_rate_base =
1353                 id->p_decoder->fmt_out.video.i_frame_rate_base;
1354         }
1355         else
1356         {
1357             /* Pick a sensible default value */
1358             id->p_encoder->fmt_out.video.i_frame_rate = 25;
1359             id->p_encoder->fmt_out.video.i_frame_rate_base = 1;
1360         }
1361     }
1362
1363     id->p_encoder->fmt_in.video.i_frame_rate =
1364         id->p_encoder->fmt_out.video.i_frame_rate;
1365     id->p_encoder->fmt_in.video.i_frame_rate_base =
1366         id->p_encoder->fmt_out.video.i_frame_rate_base;
1367
1368     date_Init( &id->interpolated_pts,
1369                id->p_encoder->fmt_out.video.i_frame_rate,
1370                id->p_encoder->fmt_out.video.i_frame_rate_base );
1371
1372     /* Check whether a particular aspect ratio was requested */
1373     if( !id->p_encoder->fmt_out.video.i_aspect )
1374     {
1375         id->p_encoder->fmt_out.video.i_aspect =
1376             id->p_decoder->fmt_out.video.i_aspect;
1377     }
1378     id->p_encoder->fmt_in.video.i_aspect =
1379         id->p_encoder->fmt_out.video.i_aspect;
1380
1381     id->p_encoder->p_module =
1382         module_Need( id->p_encoder, "encoder", p_sys->psz_venc, VLC_TRUE );
1383     if( !id->p_encoder->p_module )
1384     {
1385         msg_Err( p_stream, "cannot find encoder" );
1386         return VLC_EGENERIC;
1387     }
1388
1389     id->p_encoder->fmt_in.video.i_chroma = id->p_encoder->fmt_in.i_codec;
1390
1391     /* Hack for mp2v/mp1v transcoding support */
1392     if( id->p_encoder->fmt_out.i_codec == VLC_FOURCC('m','p','1','v') ||
1393         id->p_encoder->fmt_out.i_codec == VLC_FOURCC('m','p','2','v') )
1394     {
1395         id->p_encoder->fmt_out.i_codec = VLC_FOURCC('m','p','g','v');
1396     }
1397
1398     id->id = p_stream->p_sys->p_out->pf_add( p_stream->p_sys->p_out,
1399                                              &id->p_encoder->fmt_out );
1400     if( !id->id )
1401     {
1402         msg_Err( p_stream, "cannot add this stream" );
1403         return VLC_EGENERIC;
1404     }
1405
1406     return VLC_SUCCESS;
1407 }
1408
1409 static void transcode_video_close( sout_stream_t *p_stream,
1410                                    sout_stream_id_t *id )
1411 {
1412     int i, j;
1413
1414     if( p_stream->p_sys->i_threads >= 1 )
1415     {
1416         vlc_mutex_lock( &p_stream->p_sys->lock_out );
1417         p_stream->p_sys->b_die = 1;
1418         vlc_cond_signal( &p_stream->p_sys->cond );
1419         vlc_mutex_unlock( &p_stream->p_sys->lock_out );
1420         vlc_thread_join( p_stream->p_sys );
1421         vlc_mutex_destroy( &p_stream->p_sys->lock_out );
1422         vlc_cond_destroy( &p_stream->p_sys->cond );
1423     }
1424
1425     /* Close decoder */
1426     if( id->p_decoder->p_module )
1427         module_Unneed( id->p_decoder, id->p_decoder->p_module );
1428
1429     if( id->p_decoder->p_owner )
1430     {
1431         /* Clean-up pictures ring buffer */
1432         for( i = 0; i < PICTURE_RING_SIZE; i++ )
1433         {
1434             if( id->p_decoder->p_owner->pp_pics[i] )
1435                 video_del_buffer( VLC_OBJECT(id->p_decoder),
1436                                   id->p_decoder->p_owner->pp_pics[i] );
1437         }
1438         free( id->p_decoder->p_owner );
1439     }
1440
1441     /* Close encoder */
1442     if( id->p_encoder->p_module )
1443         module_Unneed( id->p_encoder, id->p_encoder->p_module );
1444
1445     /* Close filters */
1446     for( i = 0; i < id->i_filter; i++ )
1447     {
1448         vlc_object_detach( id->pp_filter[i] );
1449         if( id->pp_filter[i]->p_module )
1450             module_Unneed( id->pp_filter[i], id->pp_filter[i]->p_module );
1451
1452         /* Clean-up pictures ring buffer */
1453         for( j = 0; j < PICTURE_RING_SIZE; j++ )
1454         {
1455             if( id->pp_filter[i]->p_owner->pp_pics[j] )
1456                 video_del_buffer( VLC_OBJECT(id->pp_filter[i]),
1457                                   id->pp_filter[i]->p_owner->pp_pics[j] );
1458         }
1459         free( id->pp_filter[i]->p_owner );
1460
1461         vlc_object_destroy( id->pp_filter[i] );
1462     }
1463 }
1464
1465 static int transcode_video_process( sout_stream_t *p_stream,
1466                                     sout_stream_id_t *id,
1467                                     block_t *in, block_t **out )
1468 {
1469     sout_stream_sys_t *p_sys = p_stream->p_sys;
1470     int i_duplicate = 1, i;
1471     picture_t *p_pic;
1472     *out = NULL;
1473
1474     while( (p_pic = id->p_decoder->pf_decode_video( id->p_decoder, &in )) )
1475     {
1476         subpicture_t *p_subpic = 0;
1477
1478         if( p_sys->b_master_sync )
1479         {
1480             mtime_t i_video_drift;
1481             mtime_t i_master_drift = p_sys->i_master_drift;
1482             mtime_t i_pts;
1483
1484             if( !i_master_drift )
1485             {
1486                 /* No audio track ? */
1487                 p_sys->i_master_drift = i_master_drift = p_pic->date;
1488             }
1489
1490             i_pts = date_Get( &id->interpolated_pts ) + 1;
1491             i_video_drift = p_pic->date - i_pts;
1492             i_duplicate = 1;
1493
1494             /* Set the pts of the frame being encoded */
1495             p_pic->date = i_pts;
1496
1497             if( i_video_drift < i_master_drift - 50000 )
1498             {
1499 #if 0
1500                 msg_Dbg( p_stream, "dropping frame (%i)",
1501                          (int)(i_video_drift - i_master_drift) );
1502 #endif
1503                 p_pic->pf_release( p_pic );
1504                 return VLC_EGENERIC;
1505             }
1506             else if( i_video_drift > i_master_drift + 50000 )
1507             {
1508 #if 0
1509                 msg_Dbg( p_stream, "adding frame (%i)",
1510                          (int)(i_video_drift - i_master_drift) );
1511 #endif
1512                 i_duplicate = 2;
1513             }
1514         }
1515
1516         if( !id->p_encoder->p_module )
1517         {
1518             if( transcode_video_encoder_open( p_stream, id ) != VLC_SUCCESS )
1519             {
1520                 p_pic->pf_release( p_pic );
1521                 transcode_video_close( p_stream, id );
1522                 id->b_transcode = VLC_FALSE;
1523                 return VLC_EGENERIC;
1524             }
1525
1526             /* Deinterlace */
1527             if( p_stream->p_sys->b_deinterlace )
1528             {
1529                 id->pp_filter[id->i_filter] =
1530                     vlc_object_create( p_stream, VLC_OBJECT_FILTER );
1531                 vlc_object_attach( id->pp_filter[id->i_filter], p_stream );
1532
1533                 id->pp_filter[id->i_filter]->pf_vout_buffer_new =
1534                     video_new_buffer_filter;
1535                 id->pp_filter[id->i_filter]->pf_vout_buffer_del =
1536                     video_del_buffer_filter;
1537
1538                 id->pp_filter[id->i_filter]->fmt_in = id->p_decoder->fmt_out;
1539                 id->pp_filter[id->i_filter]->fmt_out = id->p_decoder->fmt_out;
1540                 id->pp_filter[id->i_filter]->p_module =
1541                     module_Need( id->pp_filter[id->i_filter],
1542                                  "video filter2", "deinterlace", 0 );
1543                 if( id->pp_filter[id->i_filter]->p_module )
1544                 {
1545                     id->pp_filter[id->i_filter]->p_owner =
1546                         malloc( sizeof(filter_owner_sys_t) );
1547                     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1548                         id->pp_filter[id->i_filter]->p_owner->pp_pics[i] = 0;
1549
1550                     id->i_filter++;
1551                 }
1552                 else
1553                 {
1554                     msg_Dbg( p_stream, "no video filter found" );
1555                     vlc_object_detach( id->pp_filter[id->i_filter] );
1556                     vlc_object_destroy( id->pp_filter[id->i_filter] );
1557                 }
1558             }
1559
1560             /* Check if we need a filter for chroma conversion or resizing */
1561             if( id->p_decoder->fmt_out.video.i_chroma !=
1562                 id->p_encoder->fmt_in.video.i_chroma ||
1563                 id->p_decoder->fmt_out.video.i_width !=
1564                 id->p_encoder->fmt_out.video.i_width ||
1565                 id->p_decoder->fmt_out.video.i_height !=
1566                 id->p_encoder->fmt_out.video.i_height ||
1567                 p_sys->i_crop_top > 0 || p_sys->i_crop_bottom > 0 ||
1568                 p_sys->i_crop_left > 0 || p_sys->i_crop_right > 0 )
1569             {
1570                 id->pp_filter[id->i_filter] =
1571                     vlc_object_create( p_stream, VLC_OBJECT_FILTER );
1572                 vlc_object_attach( id->pp_filter[id->i_filter], p_stream );
1573
1574                 id->pp_filter[id->i_filter]->pf_vout_buffer_new =
1575                     video_new_buffer_filter;
1576                 id->pp_filter[id->i_filter]->pf_vout_buffer_del =
1577                     video_del_buffer_filter;
1578
1579                 id->pp_filter[id->i_filter]->fmt_in = id->p_decoder->fmt_out;
1580                 id->pp_filter[id->i_filter]->fmt_out = id->p_encoder->fmt_in;
1581                 id->pp_filter[id->i_filter]->p_module =
1582                     module_Need( id->pp_filter[id->i_filter],
1583                                  "video filter2", 0, 0 );
1584                 if( id->pp_filter[id->i_filter]->p_module )
1585                 {
1586                     id->pp_filter[id->i_filter]->p_owner =
1587                         malloc( sizeof(filter_owner_sys_t) );
1588                     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1589                         id->pp_filter[id->i_filter]->p_owner->pp_pics[i] = 0;
1590
1591                     id->i_filter++;
1592                 }
1593                 else
1594                 {
1595                     msg_Dbg( p_stream, "no video filter found" );
1596                     vlc_object_detach( id->pp_filter[id->i_filter] );
1597                     vlc_object_destroy( id->pp_filter[id->i_filter] );
1598
1599                     p_pic->pf_release( p_pic );
1600                     transcode_video_close( p_stream, id );
1601                     id->b_transcode = VLC_FALSE;
1602                     return VLC_EGENERIC;
1603                 }
1604             }
1605         }
1606
1607         /* Run filter chain */
1608         for( i = 0; i < id->i_filter; i++ )
1609         {
1610             p_pic = id->pp_filter[i]->pf_video_filter(id->pp_filter[i], p_pic);
1611         }
1612
1613         /*
1614          * Encoding
1615          */
1616
1617         /* Check if we have a subpicture to overlay */
1618         if( p_sys->p_spu )
1619         {
1620             p_subpic = spu_SortSubpictures( p_sys->p_spu, p_pic->date );
1621             /* TODO: get another pic */
1622         }
1623
1624         /* Overlay subpicture */
1625         if( p_subpic )
1626         {
1627             int i_scale_width, i_scale_height;
1628             video_format_t *p_fmt;
1629
1630             i_scale_width = id->p_encoder->fmt_in.video.i_width * 1000 /
1631                 id->p_decoder->fmt_out.video.i_width;
1632             i_scale_height = id->p_encoder->fmt_in.video.i_height * 1000 /
1633                 id->p_decoder->fmt_out.video.i_height;
1634
1635             if( p_pic->i_refcount && !id->i_filter )
1636             {
1637                 /* We can't modify the picture, we need to duplicate it */
1638                 picture_t *p_tmp = video_new_buffer_decoder( id->p_decoder );
1639                 if( p_tmp )
1640                 {
1641                     vout_CopyPicture( p_stream, p_tmp, p_pic );
1642                     p_pic->pf_release( p_pic );
1643                     p_pic = p_tmp;
1644                 }
1645             }
1646
1647             if( id->i_filter )
1648                 p_fmt = &id->pp_filter[id->i_filter -1]->fmt_out.video;
1649             else
1650                 p_fmt = &id->p_decoder->fmt_out.video;
1651
1652             /* FIXME (shouldn't have to be done here) */
1653             p_fmt->i_sar_num = p_fmt->i_aspect *
1654                 p_fmt->i_height / p_fmt->i_width;
1655             p_fmt->i_sar_den = VOUT_ASPECT_FACTOR;
1656
1657             spu_RenderSubpictures( p_sys->p_spu, p_fmt, p_pic, p_pic, p_subpic,
1658                                    i_scale_width, i_scale_height );
1659         }
1660
1661         if( p_sys->i_threads >= 1 )
1662         {
1663             vlc_mutex_lock( &p_sys->lock_out );
1664             p_sys->pp_pics[p_sys->i_last_pic++] = p_pic;
1665             p_sys->i_last_pic %= PICTURE_RING_SIZE;
1666             *out = p_sys->p_buffers;
1667             p_sys->p_buffers = NULL;
1668             vlc_cond_signal( &p_sys->cond );
1669             vlc_mutex_unlock( &p_sys->lock_out );
1670         }
1671         else
1672         {
1673             block_t *p_block;
1674             p_block = id->p_encoder->pf_encode_video( id->p_encoder, p_pic );
1675             block_ChainAppend( out, p_block );
1676
1677             if( p_sys->b_master_sync )
1678                 date_Increment( &id->interpolated_pts, 1 );
1679
1680             if( p_sys->b_master_sync && i_duplicate > 1 )
1681             {
1682                 mtime_t i_pts = date_Get( &id->interpolated_pts ) + 1;
1683                 date_Increment( &id->interpolated_pts, 1 );
1684                 p_pic->date = i_pts;
1685                 p_block = id->p_encoder->pf_encode_video(id->p_encoder, p_pic);
1686                 block_ChainAppend( out, p_block );
1687             }
1688
1689             p_pic->pf_release( p_pic );
1690         }
1691     }
1692
1693     return VLC_SUCCESS;
1694 }
1695
1696 static int EncoderThread( sout_stream_sys_t *p_sys )
1697 {
1698     sout_stream_id_t *id = p_sys->id_video;
1699     picture_t *p_pic;
1700
1701     while( !p_sys->b_die && !p_sys->b_error )
1702     {
1703         block_t *p_block;
1704
1705         vlc_mutex_lock( &p_sys->lock_out );
1706         while( p_sys->i_last_pic == p_sys->i_first_pic )
1707         {
1708             vlc_cond_wait( &p_sys->cond, &p_sys->lock_out );
1709             if( p_sys->b_die || p_sys->b_error ) break;
1710         }
1711         if( p_sys->b_die || p_sys->b_error )
1712         {
1713             vlc_mutex_unlock( &p_sys->lock_out );
1714             break;
1715         }
1716
1717         p_pic = p_sys->pp_pics[p_sys->i_first_pic++];
1718         p_sys->i_first_pic %= PICTURE_RING_SIZE;
1719         vlc_mutex_unlock( &p_sys->lock_out );
1720
1721         p_block = id->p_encoder->pf_encode_video( id->p_encoder, p_pic );
1722         vlc_mutex_lock( &p_sys->lock_out );
1723         block_ChainAppend( &p_sys->p_buffers, p_block );
1724
1725         if( p_sys->b_master_sync )
1726             date_Increment( &id->interpolated_pts, 1 );
1727
1728 #if 0
1729         if( p_sys->b_master_sync && i_duplicate > 1 )
1730         {
1731             mtime_t i_pts = date_Get( &id->interpolated_pts ) + 1;
1732             date_Increment( &id->interpolated_pts, 1 );
1733             p_pic->date = i_pts;
1734             p_block = id->p_encoder->pf_encode_video(id->p_encoder, p_pic);
1735             block_ChainAppend( &p_sys->p_buffers, p_block );
1736         }
1737 #endif
1738         vlc_mutex_unlock( &p_sys->lock_out );
1739
1740         p_pic->pf_release( p_pic );
1741     }
1742
1743     while( p_sys->i_last_pic != p_sys->i_first_pic )
1744     {
1745         p_pic = p_sys->pp_pics[p_sys->i_first_pic++];
1746         p_sys->i_first_pic %= PICTURE_RING_SIZE;
1747
1748         p_pic->pf_release( p_pic );
1749     }
1750
1751     block_ChainRelease( p_sys->p_buffers );
1752
1753     return 0;
1754 }
1755
1756 struct picture_sys_t
1757 {
1758     vlc_object_t *p_owner;
1759 };
1760
1761 static void video_release_buffer( picture_t *p_pic )
1762 {
1763     if( p_pic && !p_pic->i_refcount && p_pic->pf_release && p_pic->p_sys )
1764     {
1765         video_del_buffer_decoder( (decoder_t *)p_pic->p_sys->p_owner, p_pic );
1766     }
1767     else if( p_pic && p_pic->i_refcount > 0 ) p_pic->i_refcount--;
1768 }
1769
1770 static picture_t *video_new_buffer( vlc_object_t *p_this, picture_t **pp_ring )
1771 {
1772     decoder_t *p_dec = (decoder_t *)p_this;
1773     picture_t *p_pic;
1774     int i;
1775
1776     /* Find an empty space in the picture ring buffer */
1777     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1778     {
1779         if( pp_ring[i] != 0 && pp_ring[i]->i_status == DESTROYED_PICTURE )
1780         {
1781             pp_ring[i]->i_status = RESERVED_PICTURE;
1782             return pp_ring[i];
1783         }
1784     }
1785     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1786     {
1787         if( pp_ring[i] == 0 ) break;
1788     }
1789
1790     if( i == PICTURE_RING_SIZE )
1791     {
1792         msg_Err( p_this, "decoder/filter is leaking pictures, "
1793                  "resetting its ring buffer" );
1794
1795         for( i = 0; i < PICTURE_RING_SIZE; i++ )
1796         {
1797             pp_ring[i]->pf_release( pp_ring[i] );
1798         }
1799
1800         i = 0;
1801     }
1802
1803     p_pic = malloc( sizeof(picture_t) );
1804     p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
1805     vout_AllocatePicture( VLC_OBJECT(p_dec), p_pic,
1806                           p_dec->fmt_out.video.i_chroma,
1807                           p_dec->fmt_out.video.i_width,
1808                           p_dec->fmt_out.video.i_height,
1809                           p_dec->fmt_out.video.i_aspect );
1810
1811     if( !p_pic->i_planes )
1812     {
1813         free( p_pic );
1814         return 0;
1815     }
1816
1817     p_pic->pf_release = video_release_buffer;
1818     p_pic->p_sys = malloc( sizeof(picture_sys_t) );
1819     p_pic->p_sys->p_owner = p_this;
1820     p_pic->i_status = RESERVED_PICTURE;
1821
1822     pp_ring[i] = p_pic;
1823
1824     return p_pic;
1825 }
1826
1827 static picture_t *video_new_buffer_decoder( decoder_t *p_dec )
1828 {
1829     return video_new_buffer( VLC_OBJECT(p_dec),
1830                              p_dec->p_owner->pp_pics );
1831 }
1832
1833 static picture_t *video_new_buffer_filter( filter_t *p_filter )
1834 {
1835     return video_new_buffer( VLC_OBJECT(p_filter),
1836                              p_filter->p_owner->pp_pics );
1837 }
1838
1839 static void video_del_buffer( vlc_object_t *p_this, picture_t *p_pic )
1840 {
1841     if( p_pic && p_pic->p_data_orig ) free( p_pic->p_data_orig );
1842     if( p_pic && p_pic->p_sys ) free( p_pic->p_sys );
1843     if( p_pic ) free( p_pic );
1844 }
1845
1846 static void video_del_buffer_decoder( decoder_t *p_decoder, picture_t *p_pic )
1847 {
1848     p_pic->i_refcount = 0;
1849     p_pic->i_status = DESTROYED_PICTURE;
1850 }
1851
1852 static void video_del_buffer_filter( filter_t *p_filter, picture_t *p_pic )
1853 {
1854     p_pic->i_refcount = 0;
1855     p_pic->i_status = DESTROYED_PICTURE;
1856 }
1857
1858 static void video_link_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
1859 {
1860     p_pic->i_refcount++;
1861 }
1862
1863 static void video_unlink_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
1864 {
1865     video_release_buffer( p_pic );
1866 }
1867
1868 /*
1869  * SPU
1870  */
1871 static subpicture_t *spu_new_buffer( decoder_t * );
1872 static void spu_del_buffer( decoder_t *, subpicture_t * );
1873
1874 static int transcode_spu_new( sout_stream_t *p_stream, sout_stream_id_t *id )
1875 {
1876     sout_stream_sys_t *p_sys = p_stream->p_sys;
1877
1878     /*
1879      * Open decoder
1880      */
1881
1882     /* Initialization of decoder structures */
1883     id->p_decoder->pf_spu_buffer_new = spu_new_buffer;
1884     id->p_decoder->pf_spu_buffer_del = spu_del_buffer;
1885     id->p_decoder->p_owner = (decoder_owner_sys_t *)p_stream;
1886     //id->p_decoder->p_cfg = p_sys->p_spu_cfg;
1887
1888     id->p_decoder->p_module =
1889         module_Need( id->p_decoder, "decoder", "$codec", 0 );
1890
1891     if( !id->p_decoder->p_module )
1892     {
1893         msg_Err( p_stream, "cannot find decoder" );
1894         return VLC_EGENERIC;
1895     }
1896
1897     if( !p_sys->b_soverlay )
1898     {
1899         /*
1900          * Open encoder
1901          */
1902
1903         /* Initialization of encoder format structures */
1904         es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
1905                         id->p_decoder->fmt_in.i_codec );
1906
1907         id->p_encoder->p_cfg = p_sys->p_spu_cfg;
1908
1909         id->p_encoder->p_module =
1910             module_Need( id->p_encoder, "encoder", p_sys->psz_senc, VLC_TRUE );
1911
1912         if( !id->p_encoder->p_module )
1913         {
1914             module_Unneed( id->p_decoder, id->p_decoder->p_module );
1915             msg_Err( p_stream, "cannot find encoder" );
1916             return VLC_EGENERIC;
1917         }
1918     }
1919
1920     if( !p_sys->p_spu )
1921     {
1922         p_sys->p_spu = spu_Create( p_stream );
1923         spu_Init( p_sys->p_spu );
1924     }
1925
1926     return VLC_SUCCESS;
1927 }
1928
1929 static void transcode_spu_close( sout_stream_t *p_stream, sout_stream_id_t *id)
1930 {
1931     /* Close decoder */
1932     if( id->p_decoder->p_module )
1933         module_Unneed( id->p_decoder, id->p_decoder->p_module );
1934
1935     /* Close encoder */
1936     if( id->p_encoder->p_module )
1937         module_Unneed( id->p_encoder, id->p_encoder->p_module );
1938 }
1939
1940 static int transcode_spu_process( sout_stream_t *p_stream,
1941                                   sout_stream_id_t *id,
1942                                   block_t *in, block_t **out )
1943 {
1944     sout_stream_sys_t *p_sys = p_stream->p_sys;
1945     subpicture_t *p_subpic;
1946     *out = NULL;
1947
1948     p_subpic = id->p_decoder->pf_decode_sub( id->p_decoder, &in );
1949     if( !p_subpic ) return VLC_EGENERIC;
1950
1951     if( p_sys->b_master_sync && p_sys->i_master_drift )
1952     {
1953         p_subpic->i_start -= p_sys->i_master_drift;
1954         if( p_subpic->i_stop ) p_subpic->i_stop -= p_sys->i_master_drift;
1955     }
1956
1957     if( p_sys->b_soverlay )
1958     {
1959         spu_DisplaySubpicture( p_sys->p_spu, p_subpic );
1960     }
1961     else
1962     {
1963         block_t *p_block;
1964
1965         p_block = id->p_encoder->pf_encode_sub( id->p_encoder, p_subpic );
1966         spu_del_buffer( id->p_decoder, p_subpic );
1967
1968         if( p_block )
1969         {
1970             block_ChainAppend( out, p_block );
1971             return VLC_SUCCESS;
1972         }
1973     }
1974
1975     return VLC_EGENERIC;
1976 }
1977
1978 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
1979 {
1980     sout_stream_t *p_stream = (sout_stream_t *)p_dec->p_owner;
1981     return spu_CreateSubpicture( p_stream->p_sys->p_spu );
1982 }
1983
1984 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
1985 {
1986     sout_stream_t *p_stream = (sout_stream_t *)p_dec->p_owner;
1987     spu_DestroySubpicture( p_stream->p_sys->p_spu, p_subpic );
1988 }