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 #include <math.h>
  31
  32 #include <vlc/vlc.h>
  33 #include <vlc/input.h>
  34 #include <vlc/sout.h>
  35 #include <vlc/vout.h>
  36 #include <vlc/decoder.h>
  37 #include "vlc_filter.h"
  38 #include "osd.h"
  39
  40 /*****************************************************************************
  41  * Module descriptor
  42  *****************************************************************************/
  43 #define VENC_TEXT N_("Video encoder")
  44 #define VENC_LONGTEXT N_( \
  45     "Allows you to specify the video encoder to use and its associated " \
  46     "options." )
  47 #define VCODEC_TEXT N_("Destination video codec")
  48 #define VCODEC_LONGTEXT N_( \
  49     "Allows you to specify the destination video codec used for the " \
  50     "streaming output." )
  51 #define VB_TEXT N_("Video bitrate")
  52 #define VB_LONGTEXT N_( \
  53     "Allows you to specify the video bitrate used for the streaming " \
  54     "output." )
  55 #define SCALE_TEXT N_("Video scaling")
  56 #define SCALE_LONGTEXT N_( \
  57     "Allows you to scale the video before encoding." )
  58 #define FPS_TEXT N_("Video frame-rate")
  59 #define FPS_LONGTEXT N_( \
  60     "Allows you to specify an output frame rate for the video." )
  61 #define DEINTERLACE_TEXT N_("Deinterlace video")
  62 #define DEINTERLACE_LONGTEXT N_( \
  63     "Allows you to deinterlace the video before encoding." )
  64 #define WIDTH_TEXT N_("Video width")
  65 #define WIDTH_LONGTEXT N_( \
  66     "Allows you to specify the output video width." )
  67 #define HEIGHT_TEXT N_("Video height")
  68 #define HEIGHT_LONGTEXT N_( \
  69     "Allows you to specify the output video height." )
  70
  71 #define CROPTOP_TEXT N_("Video crop top")
  72 #define CROPTOP_LONGTEXT N_( \
  73     "Allows you to specify the top coordinate for the video cropping." )
  74 #define CROPLEFT_TEXT N_("Video crop left")
  75 #define CROPLEFT_LONGTEXT N_( \
  76     "Allows you to specify the left coordinate for the video cropping." )
  77 #define CROPBOTTOM_TEXT N_("Video crop bottom")
  78 #define CROPBOTTOM_LONGTEXT N_( \
  79     "Allows you to specify the bottom coordinate for the video cropping." )
  80 #define CROPRIGHT_TEXT N_("Video crop right")
  81 #define CROPRIGHT_LONGTEXT N_( \
  82     "Allows you to specify the right coordinate for the video cropping." )
  83
  84 #define AENC_TEXT N_("Audio encoder")
  85 #define AENC_LONGTEXT N_( \
  86     "Allows you to specify the audio encoder to use and its associated " \
  87     "options." )
  88 #define ACODEC_TEXT N_("Destination audio codec")
  89 #define ACODEC_LONGTEXT N_( \
  90     "Allows you to specify the destination audio codec used for the " \
  91     "streaming output." )
  92 #define AB_TEXT N_("Audio bitrate")
  93 #define AB_LONGTEXT N_( \
  94     "Allows you to specify the audio bitrate used for the streaming " \
  95     "output." )
  96 #define ARATE_TEXT N_("Audio sample rate")
  97 #define ARATE_LONGTEXT N_( \
  98     "Allows you to specify the audio sample rate used for the streaming " \
  99     "output." )
 100 #define ACHANS_TEXT N_("Audio channels")
 101 #define ACHANS_LONGTEXT N_( \
 102     "Allows you to specify the number of audio channels used for the " \
 103     "streaming output." )
 104
 105 #define SENC_TEXT N_("Subtitles encoder")
 106 #define SENC_LONGTEXT N_( \
 107     "Allows you to specify the subtitles encoder to use and its associated " \
 108     "options." )
 109 #define SCODEC_TEXT N_("Destination subtitles codec")
 110 #define SCODEC_LONGTEXT N_( \
 111     "Allows you to specify the destination subtitles codec used for the " \
 112     "streaming output." )
 113 #define SFILTER_TEXT N_("Subpictures filter")
 114 #define SFILTER_LONGTEXT N_( \
 115     "Allows you to specify subpictures filters used during the video " \
 116     "transcoding. The subpictures produced by the filters will be overlayed " \
 117     "directly onto the video." )
 118
 119 #define THREADS_TEXT N_("Number of threads")
 120 #define THREADS_LONGTEXT N_( \
 121     "Allows you to specify the number of threads used for the transcoding." )
 122
 123 #define ASYNC_TEXT N_("Synchronise on audio track")
 124 #define ASYNC_LONGTEXT N_( \
 125     "This option will drop/duplicate video frames to synchronise the video " \
 126     "track on the audio track." )
 127
 128 static int  Open ( vlc_object_t * );
 129 static void Close( vlc_object_t * );
 130
 131 #define SOUT_CFG_PREFIX "sout-transcode-"
 132
 133 vlc_module_begin();
 134     set_shortname( _("Transcode"));
 135     set_description( _("Transcode stream output") );
 136     set_capability( "sout stream", 50 );
 137     add_shortcut( "transcode" );
 138     set_callbacks( Open, Close );
 139     set_category( CAT_SOUT );
 140     set_subcategory( SUBCAT_SOUT_STREAM );
 141     set_section( N_("Video"), NULL );
 142     add_string( SOUT_CFG_PREFIX "venc", NULL, NULL, VENC_TEXT,
 143                 VENC_LONGTEXT, VLC_FALSE );
 144     add_string( SOUT_CFG_PREFIX "vcodec", NULL, NULL, VCODEC_TEXT,
 145                 VCODEC_LONGTEXT, VLC_FALSE );
 146     add_integer( SOUT_CFG_PREFIX "vb", 800 * 1000, NULL, VB_TEXT,
 147                  VB_LONGTEXT, VLC_FALSE );
 148     add_float( SOUT_CFG_PREFIX "scale", 1, NULL, SCALE_TEXT,
 149                SCALE_LONGTEXT, VLC_FALSE );
 150     add_float( SOUT_CFG_PREFIX "fps", 0, NULL, FPS_TEXT,
 151                FPS_LONGTEXT, VLC_FALSE );
 152     add_bool( SOUT_CFG_PREFIX "deinterlace", 0, NULL, DEINTERLACE_TEXT,
 153               DEINTERLACE_LONGTEXT, VLC_FALSE );
 154     add_integer( SOUT_CFG_PREFIX "width", 0, NULL, WIDTH_TEXT,
 155                  WIDTH_LONGTEXT, VLC_TRUE );
 156     add_integer( SOUT_CFG_PREFIX "height", 0, NULL, HEIGHT_TEXT,
 157                  HEIGHT_LONGTEXT, VLC_TRUE );
 158
 159     add_integer( SOUT_CFG_PREFIX "croptop", 0, NULL, CROPTOP_TEXT,
 160                  CROPTOP_LONGTEXT, VLC_TRUE );
 161     add_integer( SOUT_CFG_PREFIX "cropleft", 0, NULL, CROPLEFT_TEXT,
 162                  CROPLEFT_LONGTEXT, VLC_TRUE );
 163     add_integer( SOUT_CFG_PREFIX "cropbottom", 0, NULL, CROPBOTTOM_TEXT,
 164                  CROPBOTTOM_LONGTEXT, VLC_TRUE );
 165     add_integer( SOUT_CFG_PREFIX "cropright", 0, NULL, CROPRIGHT_TEXT,
 166                  CROPRIGHT_LONGTEXT, VLC_TRUE );
 167
 168     set_section( N_("Audio"), NULL );
 169     add_string( SOUT_CFG_PREFIX "aenc", NULL, NULL, AENC_TEXT,
 170                 AENC_LONGTEXT, VLC_FALSE );
 171     add_string( SOUT_CFG_PREFIX "acodec", NULL, NULL, ACODEC_TEXT,
 172                 ACODEC_LONGTEXT, VLC_FALSE );
 173     add_integer( SOUT_CFG_PREFIX "ab", 64000, NULL, AB_TEXT,
 174                  AB_LONGTEXT, VLC_FALSE );
 175     add_integer( SOUT_CFG_PREFIX "channels", 0, NULL, ACHANS_TEXT,
 176                  ACHANS_LONGTEXT, VLC_FALSE );
 177     add_integer( SOUT_CFG_PREFIX "samplerate", 0, NULL, ARATE_TEXT,
 178                  ARATE_LONGTEXT, VLC_TRUE );
 179     add_bool( SOUT_CFG_PREFIX "audio-sync", 0, NULL, ASYNC_TEXT,
 180               ASYNC_LONGTEXT, VLC_FALSE );
 181
 182     set_section( N_("Overlays/Subtitles"), NULL );
 183     add_string( SOUT_CFG_PREFIX "senc", NULL, NULL, SENC_TEXT,
 184                 SENC_LONGTEXT, VLC_FALSE );
 185     add_string( SOUT_CFG_PREFIX "scodec", NULL, NULL, SCODEC_TEXT,
 186                 SCODEC_LONGTEXT, VLC_FALSE );
 187     add_bool( SOUT_CFG_PREFIX "soverlay", 0, NULL, SCODEC_TEXT,
 188                SCODEC_LONGTEXT, VLC_FALSE );
 189     add_module_list_cat( SOUT_CFG_PREFIX "sfilter", SUBCAT_VIDEO_SUBPIC,
 190                      NULL, NULL,
 191                      SFILTER_TEXT, SFILTER_LONGTEXT, VLC_FALSE );
 192
 193     set_section( N_("Miscellaneous"), NULL );
 194     add_integer( SOUT_CFG_PREFIX "threads", 0, NULL, THREADS_TEXT,
 195                  THREADS_LONGTEXT, VLC_TRUE );
 196
 197 vlc_module_end();
 198
 199 static const char *ppsz_sout_options[] = {
 200     "venc", "vcodec", "vb", "croptop", "cropbottom", "cropleft", "cropright",
 201     "scale", "fps", "width", "height", "deinterlace", "threads",
 202     "aenc", "acodec", "ab", "samplerate", "channels",
 203     "senc", "scodec", "soverlay", "sfilter",
 204     "audio-sync", NULL
 205 };
 206
 207 /*****************************************************************************
 208  * Exported prototypes
 209  *****************************************************************************/
 210 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
 211 static int               Del ( sout_stream_t *, sout_stream_id_t * );
 212 static int               Send( sout_stream_t *, sout_stream_id_t *, block_t* );
 213
 214 static int  transcode_audio_new    ( sout_stream_t *, sout_stream_id_t * );
 215 static void transcode_audio_close  ( sout_stream_t *, sout_stream_id_t * );
 216 static int  transcode_audio_process( sout_stream_t *, sout_stream_id_t *,
 217                                      block_t *, block_t ** );
 218
 219 static aout_buffer_t *audio_new_buffer( decoder_t *, int );
 220 static void audio_del_buffer( decoder_t *, aout_buffer_t * );
 221
 222 static int  transcode_video_new    ( sout_stream_t *, sout_stream_id_t * );
 223 static void transcode_video_close  ( sout_stream_t *, sout_stream_id_t * );
 224 static int  transcode_video_encoder_open( sout_stream_t *, sout_stream_id_t *);
 225 static int  transcode_video_process( sout_stream_t *, sout_stream_id_t *,
 226                                      block_t *, block_t ** );
 227
 228 static void video_del_buffer( vlc_object_t *, picture_t * );
 229 static picture_t *video_new_buffer_decoder( decoder_t * );
 230 static void video_del_buffer_decoder( decoder_t *, picture_t * );
 231 static void video_link_picture_decoder( decoder_t *, picture_t * );
 232 static void video_unlink_picture_decoder( decoder_t *, picture_t * );
 233 static picture_t *video_new_buffer_filter( filter_t * );
 234 static void video_del_buffer_filter( filter_t *, picture_t * );
 235
 236 static int  transcode_spu_new    ( sout_stream_t *, sout_stream_id_t * );
 237 static void transcode_spu_close  ( sout_stream_t *, sout_stream_id_t * );
 238 static int  transcode_spu_process( sout_stream_t *, sout_stream_id_t *,
 239                                    block_t *, block_t ** );
 240
 241 static int  EncoderThread( struct sout_stream_sys_t * p_sys );
 242
 243 static int pi_channels_maps[6] =
 244 {
 245     0,
 246     AOUT_CHAN_CENTER,   AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
 247     AOUT_CHAN_CENTER | AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
 248     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARLEFT
 249      | AOUT_CHAN_REARRIGHT,
 250     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
 251      | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
 252 };
 253
 254 #define PICTURE_RING_SIZE 64
 255 #define SUBPICTURE_RING_SIZE 20
 256
 257 struct sout_stream_sys_t
 258 {
 259     VLC_COMMON_MEMBERS
 260
 261     sout_stream_t   *p_out;
 262     sout_stream_id_t *id_video;
 263     block_t         *p_buffers;
 264     vlc_mutex_t     lock_out;
 265     vlc_cond_t      cond;
 266     picture_t *     pp_pics[PICTURE_RING_SIZE];
 267     int             i_first_pic, i_last_pic;
 268
 269     /* Audio */
 270     vlc_fourcc_t    i_acodec;   /* codec audio (0 if not transcode) */
 271     char            *psz_aenc;
 272     sout_cfg_t      *p_audio_cfg;
 273     int             i_sample_rate;
 274     int             i_channels;
 275     int             i_abitrate;
 276
 277     /* Video */
 278     vlc_fourcc_t    i_vcodec;   /* codec video (0 if not transcode) */
 279     char            *psz_venc;
 280     sout_cfg_t      *p_video_cfg;
 281     int             i_vbitrate;
 282     double          f_scale;
 283     double          f_fps;
 284     int             i_width;
 285     int             i_height;
 286     vlc_bool_t      b_deinterlace;
 287     int             i_threads;
 288
 289     int             i_crop_top;
 290     int             i_crop_bottom;
 291     int             i_crop_right;
 292     int             i_crop_left;
 293
 294     /* SPU */
 295     vlc_fourcc_t    i_scodec;   /* codec spu (0 if not transcode) */
 296     char            *psz_senc;
 297     vlc_bool_t      b_soverlay;
 298     sout_cfg_t      *p_spu_cfg;
 299     spu_t           *p_spu;
 300
 301     /* Sync */
 302     vlc_bool_t      b_master_sync;
 303     mtime_t         i_master_drift;
 304 };
 305
 306 struct decoder_owner_sys_t
 307 {
 308     picture_t *pp_pics[PICTURE_RING_SIZE];
 309 };
 310 struct filter_owner_sys_t
 311 {
 312     picture_t *pp_pics[PICTURE_RING_SIZE];
 313 };
 314
 315 /*****************************************************************************
 316  * Open:
 317  *****************************************************************************/
 318 static int Open( vlc_object_t *p_this )
 319 {
 320     sout_stream_t     *p_stream = (sout_stream_t*)p_this;
 321     sout_stream_sys_t *p_sys;
 322     vlc_value_t       val;
 323
 324     p_sys = vlc_object_create( p_this, sizeof( sout_stream_sys_t ) );
 325
 326     p_sys->p_out = sout_StreamNew( p_stream->p_sout, p_stream->psz_next );
 327     if( !p_sys->p_out )
 328     {
 329         msg_Err( p_stream, "cannot create chain" );
 330         vlc_object_destroy( p_sys );
 331         return VLC_EGENERIC;
 332     }
 333
 334     p_sys->i_master_drift = 0;
 335
 336     sout_CfgParse( p_stream, SOUT_CFG_PREFIX, ppsz_sout_options,
 337                    p_stream->p_cfg );
 338
 339     /* Audio transcoding parameters */
 340     var_Get( p_stream, SOUT_CFG_PREFIX "aenc", &val );
 341     p_sys->psz_aenc = NULL;
 342     p_sys->p_audio_cfg = NULL;
 343     if( val.psz_string && *val.psz_string )
 344     {
 345         char *psz_next;
 346         psz_next = sout_CfgCreate( &p_sys->psz_aenc, &p_sys->p_audio_cfg,
 347                                    val.psz_string );
 348         if( psz_next ) free( psz_next );
 349     }
 350     if( val.psz_string ) free( val.psz_string );
 351
 352     var_Get( p_stream, SOUT_CFG_PREFIX "acodec", &val );
 353     p_sys->i_acodec = 0;
 354     if( val.psz_string && *val.psz_string )
 355     {
 356         char fcc[4] = "    ";
 357         memcpy( fcc, val.psz_string, __MIN( strlen( val.psz_string ), 4 ) );
 358         p_sys->i_acodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
 359     }
 360     if( val.psz_string ) free( val.psz_string );
 361
 362     var_Get( p_stream, SOUT_CFG_PREFIX "ab", &val );
 363     p_sys->i_abitrate = val.i_int;
 364     if( p_sys->i_abitrate < 4000 ) p_sys->i_abitrate *= 1000;
 365
 366     var_Get( p_stream, SOUT_CFG_PREFIX "samplerate", &val );
 367     p_sys->i_sample_rate = val.i_int;
 368
 369     var_Get( p_stream, SOUT_CFG_PREFIX "channels", &val );
 370     p_sys->i_channels = val.i_int;
 371
 372     if( p_sys->i_acodec )
 373     {
 374         msg_Dbg( p_stream, "codec audio=%4.4s %dHz %d channels %dKb/s",
 375                  (char *)&p_sys->i_acodec, p_sys->i_sample_rate,
 376                  p_sys->i_channels, p_sys->i_abitrate / 1000 );
 377     }
 378
 379     /* Video transcoding parameters */
 380     var_Get( p_stream, SOUT_CFG_PREFIX "venc", &val );
 381     p_sys->psz_venc = NULL;
 382     p_sys->p_video_cfg = NULL;
 383     if( val.psz_string && *val.psz_string )
 384     {
 385         char *psz_next;
 386         psz_next = sout_CfgCreate( &p_sys->psz_venc, &p_sys->p_video_cfg,
 387                                    val.psz_string );
 388         if( psz_next ) free( psz_next );
 389     }
 390     if( val.psz_string ) free( val.psz_string );
 391
 392     var_Get( p_stream, SOUT_CFG_PREFIX "vcodec", &val );
 393     p_sys->i_vcodec = 0;
 394     if( val.psz_string && *val.psz_string )
 395     {
 396         char fcc[4] = "    ";
 397         memcpy( fcc, val.psz_string, __MIN( strlen( val.psz_string ), 4 ) );
 398         p_sys->i_vcodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
 399     }
 400     if( val.psz_string ) free( val.psz_string );
 401
 402     var_Get( p_stream, SOUT_CFG_PREFIX "vb", &val );
 403     p_sys->i_vbitrate = val.i_int;
 404     if( p_sys->i_vbitrate < 16000 ) p_sys->i_vbitrate *= 1000;
 405
 406     var_Get( p_stream, SOUT_CFG_PREFIX "scale", &val );
 407     p_sys->f_scale = val.f_float;
 408
 409     var_Get( p_stream, SOUT_CFG_PREFIX "fps", &val );
 410     p_sys->f_fps = val.f_float;
 411
 412     var_Get( p_stream, SOUT_CFG_PREFIX "width", &val );
 413     p_sys->i_width = val.i_int;
 414
 415     var_Get( p_stream, SOUT_CFG_PREFIX "height", &val );
 416     p_sys->i_height = val.i_int;
 417
 418     var_Get( p_stream, SOUT_CFG_PREFIX "deinterlace", &val );
 419     p_sys->b_deinterlace = val.b_bool;
 420
 421     var_Get( p_stream, SOUT_CFG_PREFIX "croptop", &val );
 422     p_sys->i_crop_top = val.i_int;
 423     var_Get( p_stream, SOUT_CFG_PREFIX "cropbottom", &val );
 424     p_sys->i_crop_bottom = val.i_int;
 425     var_Get( p_stream, SOUT_CFG_PREFIX "cropleft", &val );
 426     p_sys->i_crop_left = val.i_int;
 427     var_Get( p_stream, SOUT_CFG_PREFIX "cropright", &val );
 428     p_sys->i_crop_right = val.i_int;
 429
 430     var_Get( p_stream, SOUT_CFG_PREFIX "threads", &val );
 431     p_sys->i_threads = val.i_int;
 432
 433     if( p_sys->i_vcodec )
 434     {
 435         msg_Dbg( p_stream, "codec video=%4.4s %dx%d scaling: %f %dkb/s",
 436                  (char *)&p_sys->i_vcodec, p_sys->i_width, p_sys->i_height,
 437                  p_sys->f_scale, p_sys->i_vbitrate / 1000 );
 438     }
 439
 440     /* Subpictures transcoding parameters */
 441     p_sys->p_spu = 0;
 442     p_sys->psz_senc = NULL;
 443     p_sys->p_spu_cfg = NULL;
 444     p_sys->i_scodec = 0;
 445
 446     var_Get( p_stream, SOUT_CFG_PREFIX "senc", &val );
 447     if( val.psz_string && *val.psz_string )
 448     {
 449         char *psz_next;
 450         psz_next = sout_CfgCreate( &p_sys->psz_senc, &p_sys->p_spu_cfg,
 451                                    val.psz_string );
 452         if( psz_next ) free( psz_next );
 453     }
 454     if( val.psz_string ) free( val.psz_string );
 455
 456     var_Get( p_stream, SOUT_CFG_PREFIX "scodec", &val );
 457     if( val.psz_string && *val.psz_string )
 458     {
 459         char fcc[4] = "    ";
 460         memcpy( fcc, val.psz_string, __MIN( strlen( val.psz_string ), 4 ) );
 461         p_sys->i_scodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
 462     }
 463     if( val.psz_string ) free( val.psz_string );
 464
 465     if( p_sys->i_scodec )
 466     {
 467         msg_Dbg( p_stream, "codec spu=%4.4s", (char *)&p_sys->i_scodec );
 468     }
 469
 470     var_Get( p_stream, SOUT_CFG_PREFIX "soverlay", &val );
 471     p_sys->b_soverlay = val.b_bool;
 472
 473     var_Get( p_stream, SOUT_CFG_PREFIX "sfilter", &val );
 474     if( val.psz_string && *val.psz_string )
 475     {
 476         p_sys->p_spu = spu_Create( p_stream );
 477         var_Create( p_sys->p_spu, "sub-filter", VLC_VAR_STRING );
 478         var_Set( p_sys->p_spu, "sub-filter", val );
 479         spu_Init( p_sys->p_spu );
 480     }
 481     if( val.psz_string ) free( val.psz_string );
 482
 483     var_Get( p_stream, SOUT_CFG_PREFIX "audio-sync", &val );
 484     p_sys->b_master_sync = val.b_bool;
 485     if( p_sys->f_fps > 0 ) p_sys->b_master_sync = VLC_TRUE;
 486
 487     p_stream->pf_add    = Add;
 488     p_stream->pf_del    = Del;
 489     p_stream->pf_send   = Send;
 490     p_stream->p_sys     = p_sys;
 491
 492     return VLC_SUCCESS;
 493 }
 494
 495 /*****************************************************************************
 496  * Close:
 497  *****************************************************************************/
 498 static void Close( vlc_object_t * p_this )
 499 {
 500     sout_stream_t       *p_stream = (sout_stream_t*)p_this;
 501     sout_stream_sys_t   *p_sys = p_stream->p_sys;
 502
 503     sout_StreamDelete( p_sys->p_out );
 504
 505     while( p_sys->p_audio_cfg != NULL )
 506     {
 507         sout_cfg_t *p_next = p_sys->p_audio_cfg->p_next;
 508
 509         if( p_sys->p_audio_cfg->psz_name )
 510             free( p_sys->p_audio_cfg->psz_name );
 511         if( p_sys->p_audio_cfg->psz_value )
 512             free( p_sys->p_audio_cfg->psz_value );
 513         free( p_sys->p_audio_cfg );
 514
 515         p_sys->p_audio_cfg = p_next;
 516     }
 517     if( p_sys->psz_aenc ) free( p_sys->psz_aenc );
 518
 519     while( p_sys->p_video_cfg != NULL )
 520     {
 521         sout_cfg_t *p_next = p_sys->p_video_cfg->p_next;
 522
 523         if( p_sys->p_video_cfg->psz_name )
 524             free( p_sys->p_video_cfg->psz_name );
 525         if( p_sys->p_video_cfg->psz_value )
 526             free( p_sys->p_video_cfg->psz_value );
 527         free( p_sys->p_video_cfg );
 528
 529         p_sys->p_video_cfg = p_next;
 530     }
 531     if( p_sys->psz_venc ) free( p_sys->psz_venc );
 532
 533     while( p_sys->p_spu_cfg != NULL )
 534     {
 535         sout_cfg_t *p_next = p_sys->p_spu_cfg->p_next;
 536
 537         if( p_sys->p_spu_cfg->psz_name )
 538             free( p_sys->p_spu_cfg->psz_name );
 539         if( p_sys->p_spu_cfg->psz_value )
 540             free( p_sys->p_spu_cfg->psz_value );
 541         free( p_sys->p_spu_cfg );
 542
 543         p_sys->p_spu_cfg = p_next;
 544     }
 545     if( p_sys->psz_senc ) free( p_sys->psz_senc );
 546
 547     if( p_sys->p_spu ) spu_Destroy( p_sys->p_spu );
 548
 549     vlc_object_destroy( p_sys );
 550 }
 551
 552 struct sout_stream_id_t
 553 {
 554     vlc_fourcc_t  b_transcode;
 555
 556     /* id of the out stream */
 557     void *id;
 558
 559     /* Decoder */
 560     decoder_t       *p_decoder;
 561
 562     /* Filters */
 563     filter_t        *pp_filter[10];
 564     int             i_filter;
 565
 566     /* Encoder */
 567     encoder_t       *p_encoder;
 568
 569     /* Sync */
 570     date_t          interpolated_pts;
 571 };
 572
 573
 574 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
 575 {
 576     sout_stream_sys_t *p_sys = p_stream->p_sys;
 577     sout_stream_id_t *id;
 578
 579     id = malloc( sizeof( sout_stream_id_t ) );
 580     memset( id, 0, sizeof(sout_stream_id_t) );
 581
 582     id->id = NULL;
 583     id->p_decoder = NULL;
 584     id->p_encoder = NULL;
 585
 586     /* Create decoder object */
 587     id->p_decoder = vlc_object_create( p_stream, VLC_OBJECT_DECODER );
 588     if( !id->p_decoder )
 589     {
 590         msg_Err( p_stream, "out of memory" );
 591         goto error;
 592     }
 593     vlc_object_attach( id->p_decoder, p_stream );
 594     id->p_decoder->p_module = NULL;
 595     id->p_decoder->fmt_in = *p_fmt;
 596     id->p_decoder->fmt_out = *p_fmt;
 597     id->p_decoder->fmt_out.i_extra = 0;
 598     id->p_decoder->fmt_out.p_extra = 0;
 599     id->p_decoder->b_pace_control = VLC_TRUE;
 600
 601     /* Create encoder object */
 602     id->p_encoder = vlc_object_create( p_stream, VLC_OBJECT_ENCODER );
 603     if( !id->p_encoder )
 604     {
 605         msg_Err( p_stream, "out of memory" );
 606         goto error;
 607     }
 608     vlc_object_attach( id->p_encoder, p_stream );
 609     id->p_encoder->p_module = NULL;
 610
 611     /* Create destination format */
 612     es_format_Init( &id->p_encoder->fmt_out, p_fmt->i_cat, 0 );
 613     id->p_encoder->fmt_out.i_id    = p_fmt->i_id;
 614     id->p_encoder->fmt_out.i_group = p_fmt->i_group;
 615     if( p_fmt->psz_language )
 616         id->p_encoder->fmt_out.psz_language = strdup( p_fmt->psz_language );
 617
 618     if( p_fmt->i_cat == AUDIO_ES && (p_sys->i_acodec || p_sys->psz_aenc) )
 619     {
 620         msg_Dbg( p_stream,
 621                  "creating audio transcoding from fcc=`%4.4s' to fcc=`%4.4s'",
 622                  (char*)&p_fmt->i_codec, (char*)&p_sys->i_acodec );
 623
 624         /* Complete destination format */
 625         id->p_encoder->fmt_out.i_codec = p_sys->i_acodec;
 626         id->p_encoder->fmt_out.audio.i_rate = p_sys->i_sample_rate > 0 ?
 627             p_sys->i_sample_rate : (int)p_fmt->audio.i_rate;
 628         id->p_encoder->fmt_out.audio.i_channels = p_sys->i_channels > 0 ?
 629             p_sys->i_channels : p_fmt->audio.i_channels;
 630         id->p_encoder->fmt_out.i_bitrate = p_sys->i_abitrate;
 631         id->p_encoder->fmt_out.audio.i_bitspersample =
 632             p_fmt->audio.i_bitspersample;
 633
 634         /* Build decoder -> filter -> encoder chain */
 635         if( transcode_audio_new( p_stream, id ) )
 636         {
 637             msg_Err( p_stream, "cannot create audio chain" );
 638             goto error;
 639         }
 640
 641         /* Open output stream */
 642         id->id = p_sys->p_out->pf_add( p_sys->p_out, &id->p_encoder->fmt_out );
 643         id->b_transcode = VLC_TRUE;
 644
 645         if( !id->id ) goto error;
 646
 647         date_Init( &id->interpolated_pts, p_fmt->audio.i_rate, 1 );
 648     }
 649     else if( p_fmt->i_cat == VIDEO_ES &&
 650              (p_sys->i_vcodec != 0 || p_sys->psz_venc) )
 651     {
 652         msg_Dbg( p_stream,
 653                  "creating video transcoding from fcc=`%4.4s' to fcc=`%4.4s'",
 654                  (char*)&p_fmt->i_codec, (char*)&p_sys->i_vcodec );
 655
 656         /* Complete destination format */
 657         id->p_encoder->fmt_out.i_codec = p_sys->i_vcodec;
 658         id->p_encoder->fmt_out.video.i_width  = p_sys->i_width;
 659         id->p_encoder->fmt_out.video.i_height = p_sys->i_height;
 660         id->p_encoder->fmt_out.i_bitrate = p_sys->i_vbitrate;
 661
 662         /* Build decoder -> filter -> encoder chain */
 663         if( transcode_video_new( p_stream, id ) )
 664         {
 665             msg_Err( p_stream, "cannot create video chain" );
 666             goto error;
 667         }
 668
 669         /* Stream will be added later on because we don't know
 670          * all the characteristics of the decoded stream yet */
 671         id->b_transcode = VLC_TRUE;
 672
 673         if( p_sys->f_fps > 0 )
 674         {
 675             id->p_encoder->fmt_out.video.i_frame_rate = nearbyint(p_sys->f_fps * 1000) ;
 676             id->p_encoder->fmt_out.video.i_frame_rate_base = 1000;
 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     date_Init( &id->interpolated_pts,
1368                id->p_encoder->fmt_out.video.i_frame_rate,
1369                id->p_encoder->fmt_out.video.i_frame_rate_base );
1370
1371     /* Check whether a particular aspect ratio was requested */
1372     if( !id->p_encoder->fmt_out.video.i_aspect )
1373     {
1374         id->p_encoder->fmt_out.video.i_aspect =
1375             id->p_decoder->fmt_out.video.i_aspect;
1376     }
1377     id->p_encoder->fmt_in.video.i_aspect =
1378         id->p_encoder->fmt_out.video.i_aspect;
1379
1380     id->p_encoder->p_module =
1381         module_Need( id->p_encoder, "encoder", p_sys->psz_venc, VLC_TRUE );
1382     if( !id->p_encoder->p_module )
1383     {
1384         msg_Err( p_stream, "cannot find encoder" );
1385         return VLC_EGENERIC;
1386     }
1387
1388     id->p_encoder->fmt_in.video.i_chroma = id->p_encoder->fmt_in.i_codec;
1389
1390     /* Hack for mp2v/mp1v transcoding support */
1391     if( id->p_encoder->fmt_out.i_codec == VLC_FOURCC('m','p','1','v') ||
1392         id->p_encoder->fmt_out.i_codec == VLC_FOURCC('m','p','2','v') )
1393     {
1394         id->p_encoder->fmt_out.i_codec = VLC_FOURCC('m','p','g','v');
1395     }
1396
1397     id->id = p_stream->p_sys->p_out->pf_add( p_stream->p_sys->p_out,
1398                                              &id->p_encoder->fmt_out );
1399     if( !id->id )
1400     {
1401         msg_Err( p_stream, "cannot add this stream" );
1402         return VLC_EGENERIC;
1403     }
1404
1405     return VLC_SUCCESS;
1406 }
1407
1408 static void transcode_video_close( sout_stream_t *p_stream,
1409                                    sout_stream_id_t *id )
1410 {
1411     int i, j;
1412
1413     if( p_stream->p_sys->i_threads >= 1 )
1414     {
1415         vlc_mutex_lock( &p_stream->p_sys->lock_out );
1416         p_stream->p_sys->b_die = 1;
1417         vlc_cond_signal( &p_stream->p_sys->cond );
1418         vlc_mutex_unlock( &p_stream->p_sys->lock_out );
1419         vlc_thread_join( p_stream->p_sys );
1420         vlc_mutex_destroy( &p_stream->p_sys->lock_out );
1421         vlc_cond_destroy( &p_stream->p_sys->cond );
1422     }
1423
1424     /* Close decoder */
1425     if( id->p_decoder->p_module )
1426         module_Unneed( id->p_decoder, id->p_decoder->p_module );
1427
1428     if( id->p_decoder->p_owner )
1429     {
1430         /* Clean-up pictures ring buffer */
1431         for( i = 0; i < PICTURE_RING_SIZE; i++ )
1432         {
1433             if( id->p_decoder->p_owner->pp_pics[i] )
1434                 video_del_buffer( VLC_OBJECT(id->p_decoder),
1435                                   id->p_decoder->p_owner->pp_pics[i] );
1436         }
1437         free( id->p_decoder->p_owner );
1438     }
1439
1440     /* Close encoder */
1441     if( id->p_encoder->p_module )
1442         module_Unneed( id->p_encoder, id->p_encoder->p_module );
1443
1444     /* Close filters */
1445     for( i = 0; i < id->i_filter; i++ )
1446     {
1447         vlc_object_detach( id->pp_filter[i] );
1448         if( id->pp_filter[i]->p_module )
1449             module_Unneed( id->pp_filter[i], id->pp_filter[i]->p_module );
1450
1451         /* Clean-up pictures ring buffer */
1452         for( j = 0; j < PICTURE_RING_SIZE; j++ )
1453         {
1454             if( id->pp_filter[i]->p_owner->pp_pics[j] )
1455                 video_del_buffer( VLC_OBJECT(id->pp_filter[i]),
1456                                   id->pp_filter[i]->p_owner->pp_pics[j] );
1457         }
1458         free( id->pp_filter[i]->p_owner );
1459
1460         vlc_object_destroy( id->pp_filter[i] );
1461     }
1462 }
1463
1464 static int transcode_video_process( sout_stream_t *p_stream,
1465                                     sout_stream_id_t *id,
1466                                     block_t *in, block_t **out )
1467 {
1468     sout_stream_sys_t *p_sys = p_stream->p_sys;
1469     int i_duplicate = 1, i;
1470     picture_t *p_pic;
1471     *out = NULL;
1472
1473     while( (p_pic = id->p_decoder->pf_decode_video( id->p_decoder, &in )) )
1474     {
1475         subpicture_t *p_subpic = 0;
1476
1477         if( p_sys->b_master_sync )
1478         {
1479             mtime_t i_video_drift;
1480             mtime_t i_master_drift = p_sys->i_master_drift;
1481             mtime_t i_pts;
1482
1483             if( !i_master_drift )
1484             {
1485                 /* No audio track ? */
1486                 p_sys->i_master_drift = i_master_drift = p_pic->date;
1487             }
1488
1489             i_pts = date_Get( &id->interpolated_pts ) + 1;
1490             i_video_drift = p_pic->date - i_pts;
1491             i_duplicate = 1;
1492
1493             /* Set the pts of the frame being encoded */
1494             p_pic->date = i_pts;
1495
1496             if( i_video_drift < i_master_drift - 50000 )
1497             {
1498 #if 0
1499                 msg_Dbg( p_stream, "dropping frame (%i)",
1500                          (int)(i_video_drift - i_master_drift) );
1501 #endif
1502                 p_pic->pf_release( p_pic );
1503                 return VLC_EGENERIC;
1504             }
1505             else if( i_video_drift > i_master_drift + 50000 )
1506             {
1507 #if 0
1508                 msg_Dbg( p_stream, "adding frame (%i)",
1509                          (int)(i_video_drift - i_master_drift) );
1510 #endif
1511                 i_duplicate = 2;
1512             }
1513         }
1514
1515         if( !id->p_encoder->p_module )
1516         {
1517             if( transcode_video_encoder_open( p_stream, id ) != VLC_SUCCESS )
1518             {
1519                 p_pic->pf_release( p_pic );
1520                 transcode_video_close( p_stream, id );
1521                 id->b_transcode = VLC_FALSE;
1522                 return VLC_EGENERIC;
1523             }
1524
1525             /* Deinterlace */
1526             if( p_stream->p_sys->b_deinterlace )
1527             {
1528                 id->pp_filter[id->i_filter] =
1529                     vlc_object_create( p_stream, VLC_OBJECT_FILTER );
1530                 vlc_object_attach( id->pp_filter[id->i_filter], p_stream );
1531
1532                 id->pp_filter[id->i_filter]->pf_vout_buffer_new =
1533                     video_new_buffer_filter;
1534                 id->pp_filter[id->i_filter]->pf_vout_buffer_del =
1535                     video_del_buffer_filter;
1536
1537                 id->pp_filter[id->i_filter]->fmt_in = id->p_decoder->fmt_out;
1538                 id->pp_filter[id->i_filter]->fmt_out = id->p_decoder->fmt_out;
1539                 id->pp_filter[id->i_filter]->p_module =
1540                     module_Need( id->pp_filter[id->i_filter],
1541                                  "video filter2", "deinterlace", 0 );
1542                 if( id->pp_filter[id->i_filter]->p_module )
1543                 {
1544                     id->pp_filter[id->i_filter]->p_owner =
1545                         malloc( sizeof(filter_owner_sys_t) );
1546                     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1547                         id->pp_filter[id->i_filter]->p_owner->pp_pics[i] = 0;
1548
1549                     id->i_filter++;
1550                 }
1551                 else
1552                 {
1553                     msg_Dbg( p_stream, "no video filter found" );
1554                     vlc_object_detach( id->pp_filter[id->i_filter] );
1555                     vlc_object_destroy( id->pp_filter[id->i_filter] );
1556                 }
1557             }
1558
1559             /* Check if we need a filter for chroma conversion or resizing */
1560             if( id->p_decoder->fmt_out.video.i_chroma !=
1561                 id->p_encoder->fmt_in.video.i_chroma ||
1562                 id->p_decoder->fmt_out.video.i_width !=
1563                 id->p_encoder->fmt_out.video.i_width ||
1564                 id->p_decoder->fmt_out.video.i_height !=
1565                 id->p_encoder->fmt_out.video.i_height ||
1566                 p_sys->i_crop_top > 0 || p_sys->i_crop_bottom > 0 ||
1567                 p_sys->i_crop_left > 0 || p_sys->i_crop_right > 0 )
1568             {
1569                 id->pp_filter[id->i_filter] =
1570                     vlc_object_create( p_stream, VLC_OBJECT_FILTER );
1571                 vlc_object_attach( id->pp_filter[id->i_filter], p_stream );
1572
1573                 id->pp_filter[id->i_filter]->pf_vout_buffer_new =
1574                     video_new_buffer_filter;
1575                 id->pp_filter[id->i_filter]->pf_vout_buffer_del =
1576                     video_del_buffer_filter;
1577
1578                 id->pp_filter[id->i_filter]->fmt_in = id->p_decoder->fmt_out;
1579                 id->pp_filter[id->i_filter]->fmt_out = id->p_encoder->fmt_in;
1580                 id->pp_filter[id->i_filter]->p_module =
1581                     module_Need( id->pp_filter[id->i_filter],
1582                                  "video filter2", 0, 0 );
1583                 if( id->pp_filter[id->i_filter]->p_module )
1584                 {
1585                     id->pp_filter[id->i_filter]->p_owner =
1586                         malloc( sizeof(filter_owner_sys_t) );
1587                     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1588                         id->pp_filter[id->i_filter]->p_owner->pp_pics[i] = 0;
1589
1590                     id->i_filter++;
1591                 }
1592                 else
1593                 {
1594                     msg_Dbg( p_stream, "no video filter found" );
1595                     vlc_object_detach( id->pp_filter[id->i_filter] );
1596                     vlc_object_destroy( id->pp_filter[id->i_filter] );
1597
1598                     p_pic->pf_release( p_pic );
1599                     transcode_video_close( p_stream, id );
1600                     id->b_transcode = VLC_FALSE;
1601                     return VLC_EGENERIC;
1602                 }
1603             }
1604         }
1605
1606         /* Run filter chain */
1607         for( i = 0; i < id->i_filter; i++ )
1608         {
1609             p_pic = id->pp_filter[i]->pf_video_filter(id->pp_filter[i], p_pic);
1610         }
1611
1612         /*
1613          * Encoding
1614          */
1615
1616         /* Check if we have a subpicture to overlay */
1617         if( p_sys->p_spu )
1618         {
1619             p_subpic = spu_SortSubpictures( p_sys->p_spu, p_pic->date );
1620             /* TODO: get another pic */
1621         }
1622
1623         /* Overlay subpicture */
1624         if( p_subpic )
1625         {
1626             int i_scale_width, i_scale_height;
1627             video_format_t *p_fmt;
1628
1629             i_scale_width = id->p_encoder->fmt_in.video.i_width * 1000 /
1630                 id->p_decoder->fmt_out.video.i_width;
1631             i_scale_height = id->p_encoder->fmt_in.video.i_height * 1000 /
1632                 id->p_decoder->fmt_out.video.i_height;
1633
1634             if( p_pic->i_refcount && !id->i_filter )
1635             {
1636                 /* We can't modify the picture, we need to duplicate it */
1637                 picture_t *p_tmp = video_new_buffer_decoder( id->p_decoder );
1638                 if( p_tmp )
1639                 {
1640                     vout_CopyPicture( p_stream, p_tmp, p_pic );
1641                     p_pic->pf_release( p_pic );
1642                     p_pic = p_tmp;
1643                 }
1644             }
1645
1646             if( id->i_filter )
1647                 p_fmt = &id->pp_filter[id->i_filter -1]->fmt_out.video;
1648             else
1649                 p_fmt = &id->p_decoder->fmt_out.video;
1650
1651             /* FIXME (shouldn't have to be done here) */
1652             p_fmt->i_sar_num = p_fmt->i_aspect *
1653                 p_fmt->i_height / p_fmt->i_width;
1654             p_fmt->i_sar_den = VOUT_ASPECT_FACTOR;
1655
1656             spu_RenderSubpictures( p_sys->p_spu, p_fmt, p_pic, p_pic, p_subpic,
1657                                    i_scale_width, i_scale_height );
1658         }
1659
1660         if( p_sys->i_threads >= 1 )
1661         {
1662             vlc_mutex_lock( &p_sys->lock_out );
1663             p_sys->pp_pics[p_sys->i_last_pic++] = p_pic;
1664             p_sys->i_last_pic %= PICTURE_RING_SIZE;
1665             *out = p_sys->p_buffers;
1666             p_sys->p_buffers = NULL;
1667             vlc_cond_signal( &p_sys->cond );
1668             vlc_mutex_unlock( &p_sys->lock_out );
1669         }
1670         else
1671         {
1672             block_t *p_block;
1673             p_block = id->p_encoder->pf_encode_video( id->p_encoder, p_pic );
1674             block_ChainAppend( out, p_block );
1675
1676             if( p_sys->b_master_sync )
1677                 date_Increment( &id->interpolated_pts, 1 );
1678
1679             if( p_sys->b_master_sync && i_duplicate > 1 )
1680             {
1681                 mtime_t i_pts = date_Get( &id->interpolated_pts ) + 1;
1682                 date_Increment( &id->interpolated_pts, 1 );
1683                 p_pic->date = i_pts;
1684                 p_block = id->p_encoder->pf_encode_video(id->p_encoder, p_pic);
1685                 block_ChainAppend( out, p_block );
1686             }
1687
1688             p_pic->pf_release( p_pic );
1689         }
1690     }
1691
1692     return VLC_SUCCESS;
1693 }
1694
1695 static int EncoderThread( sout_stream_sys_t *p_sys )
1696 {
1697     sout_stream_id_t *id = p_sys->id_video;
1698     picture_t *p_pic;
1699
1700     while( !p_sys->b_die && !p_sys->b_error )
1701     {
1702         block_t *p_block;
1703
1704         vlc_mutex_lock( &p_sys->lock_out );
1705         while( p_sys->i_last_pic == p_sys->i_first_pic )
1706         {
1707             vlc_cond_wait( &p_sys->cond, &p_sys->lock_out );
1708             if( p_sys->b_die || p_sys->b_error ) break;
1709         }
1710         if( p_sys->b_die || p_sys->b_error )
1711         {
1712             vlc_mutex_unlock( &p_sys->lock_out );
1713             break;
1714         }
1715
1716         p_pic = p_sys->pp_pics[p_sys->i_first_pic++];
1717         p_sys->i_first_pic %= PICTURE_RING_SIZE;
1718         vlc_mutex_unlock( &p_sys->lock_out );
1719
1720         p_block = id->p_encoder->pf_encode_video( id->p_encoder, p_pic );
1721         vlc_mutex_lock( &p_sys->lock_out );
1722         block_ChainAppend( &p_sys->p_buffers, p_block );
1723
1724         if( p_sys->b_master_sync )
1725             date_Increment( &id->interpolated_pts, 1 );
1726
1727 #if 0
1728         if( p_sys->b_master_sync && i_duplicate > 1 )
1729         {
1730             mtime_t i_pts = date_Get( &id->interpolated_pts ) + 1;
1731             date_Increment( &id->interpolated_pts, 1 );
1732             p_pic->date = i_pts;
1733             p_block = id->p_encoder->pf_encode_video(id->p_encoder, p_pic);
1734             block_ChainAppend( &p_sys->p_buffers, p_block );
1735         }
1736 #endif
1737         vlc_mutex_unlock( &p_sys->lock_out );
1738
1739         p_pic->pf_release( p_pic );
1740     }
1741
1742     while( p_sys->i_last_pic != p_sys->i_first_pic )
1743     {
1744         p_pic = p_sys->pp_pics[p_sys->i_first_pic++];
1745         p_sys->i_first_pic %= PICTURE_RING_SIZE;
1746
1747         p_pic->pf_release( p_pic );
1748     }
1749
1750     block_ChainRelease( p_sys->p_buffers );
1751
1752     return 0;
1753 }
1754
1755 struct picture_sys_t
1756 {
1757     vlc_object_t *p_owner;
1758 };
1759
1760 static void video_release_buffer( picture_t *p_pic )
1761 {
1762     if( p_pic && !p_pic->i_refcount && p_pic->pf_release && p_pic->p_sys )
1763     {
1764         video_del_buffer_decoder( (decoder_t *)p_pic->p_sys->p_owner, p_pic );
1765     }
1766     else if( p_pic && p_pic->i_refcount > 0 ) p_pic->i_refcount--;
1767 }
1768
1769 static picture_t *video_new_buffer( vlc_object_t *p_this, picture_t **pp_ring )
1770 {
1771     decoder_t *p_dec = (decoder_t *)p_this;
1772     picture_t *p_pic;
1773     int i;
1774
1775     /* Find an empty space in the picture ring buffer */
1776     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1777     {
1778         if( pp_ring[i] != 0 && pp_ring[i]->i_status == DESTROYED_PICTURE )
1779         {
1780             pp_ring[i]->i_status = RESERVED_PICTURE;
1781             return pp_ring[i];
1782         }
1783     }
1784     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1785     {
1786         if( pp_ring[i] == 0 ) break;
1787     }
1788
1789     if( i == PICTURE_RING_SIZE )
1790     {
1791         msg_Err( p_this, "decoder/filter is leaking pictures, "
1792                  "resetting its ring buffer" );
1793
1794         for( i = 0; i < PICTURE_RING_SIZE; i++ )
1795         {
1796             pp_ring[i]->pf_release( pp_ring[i] );
1797         }
1798
1799         i = 0;
1800     }
1801
1802     p_pic = malloc( sizeof(picture_t) );
1803     p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
1804     vout_AllocatePicture( VLC_OBJECT(p_dec), p_pic,
1805                           p_dec->fmt_out.video.i_chroma,
1806                           p_dec->fmt_out.video.i_width,
1807                           p_dec->fmt_out.video.i_height,
1808                           p_dec->fmt_out.video.i_aspect );
1809
1810     if( !p_pic->i_planes )
1811     {
1812         free( p_pic );
1813         return 0;
1814     }
1815
1816     p_pic->pf_release = video_release_buffer;
1817     p_pic->p_sys = malloc( sizeof(picture_sys_t) );
1818     p_pic->p_sys->p_owner = p_this;
1819     p_pic->i_status = RESERVED_PICTURE;
1820
1821     pp_ring[i] = p_pic;
1822
1823     return p_pic;
1824 }
1825
1826 static picture_t *video_new_buffer_decoder( decoder_t *p_dec )
1827 {
1828     return video_new_buffer( VLC_OBJECT(p_dec),
1829                              p_dec->p_owner->pp_pics );
1830 }
1831
1832 static picture_t *video_new_buffer_filter( filter_t *p_filter )
1833 {
1834     return video_new_buffer( VLC_OBJECT(p_filter),
1835                              p_filter->p_owner->pp_pics );
1836 }
1837
1838 static void video_del_buffer( vlc_object_t *p_this, picture_t *p_pic )
1839 {
1840     if( p_pic && p_pic->p_data_orig ) free( p_pic->p_data_orig );
1841     if( p_pic && p_pic->p_sys ) free( p_pic->p_sys );
1842     if( p_pic ) free( p_pic );
1843 }
1844
1845 static void video_del_buffer_decoder( decoder_t *p_decoder, picture_t *p_pic )
1846 {
1847     p_pic->i_refcount = 0;
1848     p_pic->i_status = DESTROYED_PICTURE;
1849 }
1850
1851 static void video_del_buffer_filter( filter_t *p_filter, picture_t *p_pic )
1852 {
1853     p_pic->i_refcount = 0;
1854     p_pic->i_status = DESTROYED_PICTURE;
1855 }
1856
1857 static void video_link_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
1858 {
1859     p_pic->i_refcount++;
1860 }
1861
1862 static void video_unlink_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
1863 {
1864     video_release_buffer( p_pic );
1865 }
1866
1867 /*
1868  * SPU
1869  */
1870 static subpicture_t *spu_new_buffer( decoder_t * );
1871 static void spu_del_buffer( decoder_t *, subpicture_t * );
1872
1873 static int transcode_spu_new( sout_stream_t *p_stream, sout_stream_id_t *id )
1874 {
1875     sout_stream_sys_t *p_sys = p_stream->p_sys;
1876
1877     /*
1878      * Open decoder
1879      */
1880
1881     /* Initialization of decoder structures */
1882     id->p_decoder->pf_spu_buffer_new = spu_new_buffer;
1883     id->p_decoder->pf_spu_buffer_del = spu_del_buffer;
1884     id->p_decoder->p_owner = (decoder_owner_sys_t *)p_stream;
1885     //id->p_decoder->p_cfg = p_sys->p_spu_cfg;
1886
1887     id->p_decoder->p_module =
1888         module_Need( id->p_decoder, "decoder", "$codec", 0 );
1889
1890     if( !id->p_decoder->p_module )
1891     {
1892         msg_Err( p_stream, "cannot find decoder" );
1893         return VLC_EGENERIC;
1894     }
1895
1896     if( !p_sys->b_soverlay )
1897     {
1898         /*
1899          * Open encoder
1900          */
1901
1902         /* Initialization of encoder format structures */
1903         es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
1904                         id->p_decoder->fmt_in.i_codec );
1905
1906         id->p_encoder->p_cfg = p_sys->p_spu_cfg;
1907
1908         id->p_encoder->p_module =
1909             module_Need( id->p_encoder, "encoder", p_sys->psz_senc, VLC_TRUE );
1910
1911         if( !id->p_encoder->p_module )
1912         {
1913             module_Unneed( id->p_decoder, id->p_decoder->p_module );
1914             msg_Err( p_stream, "cannot find encoder" );
1915             return VLC_EGENERIC;
1916         }
1917     }
1918
1919     if( !p_sys->p_spu )
1920     {
1921         p_sys->p_spu = spu_Create( p_stream );
1922         spu_Init( p_sys->p_spu );
1923     }
1924
1925     return VLC_SUCCESS;
1926 }
1927
1928 static void transcode_spu_close( sout_stream_t *p_stream, sout_stream_id_t *id)
1929 {
1930     /* Close decoder */
1931     if( id->p_decoder->p_module )
1932         module_Unneed( id->p_decoder, id->p_decoder->p_module );
1933
1934     /* Close encoder */
1935     if( id->p_encoder->p_module )
1936         module_Unneed( id->p_encoder, id->p_encoder->p_module );
1937 }
1938
1939 static int transcode_spu_process( sout_stream_t *p_stream,
1940                                   sout_stream_id_t *id,
1941                                   block_t *in, block_t **out )
1942 {
1943     sout_stream_sys_t *p_sys = p_stream->p_sys;
1944     subpicture_t *p_subpic;
1945     *out = NULL;
1946
1947     p_subpic = id->p_decoder->pf_decode_sub( id->p_decoder, &in );
1948     if( !p_subpic ) return VLC_EGENERIC;
1949
1950     if( p_sys->b_master_sync && p_sys->i_master_drift )
1951     {
1952         p_subpic->i_start -= p_sys->i_master_drift;
1953         if( p_subpic->i_stop ) p_subpic->i_stop -= p_sys->i_master_drift;
1954     }
1955
1956     if( p_sys->b_soverlay )
1957     {
1958         spu_DisplaySubpicture( p_sys->p_spu, p_subpic );
1959     }
1960     else
1961     {
1962         block_t *p_block;
1963
1964         p_block = id->p_encoder->pf_encode_sub( id->p_encoder, p_subpic );
1965         spu_del_buffer( id->p_decoder, p_subpic );
1966
1967         if( p_block )
1968         {
1969             block_ChainAppend( out, p_block );
1970             return VLC_SUCCESS;
1971         }
1972     }
1973
1974     return VLC_EGENERIC;
1975 }
1976
1977 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
1978 {
1979     sout_stream_t *p_stream = (sout_stream_t *)p_dec->p_owner;
1980     return spu_CreateSubpicture( p_stream->p_sys->p_spu );
1981 }
1982
1983 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
1984 {
1985     sout_stream_t *p_stream = (sout_stream_t *)p_dec->p_owner;
1986     spu_DestroySubpicture( p_stream->p_sys->p_spu, p_subpic );
1987 }