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