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 =
 676                 nearbyint(p_sys->f_fps * 1001);
 677             id->p_encoder->fmt_out.video.i_frame_rate_base = 1001;
 678         }
 679     }
 680     else if( p_fmt->i_cat == SPU_ES && (p_sys->i_scodec || p_sys->psz_senc) )
 681     {
 682         msg_Dbg( p_stream, "creating subtitles transcoding from fcc=`%4.4s' "
 683                  "to fcc=`%4.4s'", (char*)&p_fmt->i_codec,
 684                  (char*)&p_sys->i_scodec );
 685
 686         /* Complete destination format */
 687         id->p_encoder->fmt_out.i_codec = p_sys->i_scodec;
 688
 689         /* build decoder -> filter -> encoder */
 690         if( transcode_spu_new( p_stream, id ) )
 691         {
 692             msg_Err( p_stream, "cannot create subtitles chain" );
 693             goto error;
 694         }
 695
 696         /* open output stream */
 697         id->id = p_sys->p_out->pf_add( p_sys->p_out, &id->p_encoder->fmt_out );
 698         id->b_transcode = VLC_TRUE;
 699
 700         if( !id->id ) goto error;
 701     }
 702     else if( p_fmt->i_cat == SPU_ES && p_sys->b_soverlay )
 703     {
 704         msg_Dbg( p_stream, "subtitles (fcc=`%4.4s') overlaying",
 705                  (char*)&p_fmt->i_codec );
 706
 707         id->b_transcode = VLC_TRUE;
 708
 709         /* Build decoder -> filter -> overlaying chain */
 710         if( transcode_spu_new( p_stream, id ) )
 711         {
 712             msg_Err( p_stream, "cannot create subtitles chain" );
 713             goto error;
 714         }
 715     }
 716     else
 717     {
 718         msg_Dbg( p_stream, "not transcoding a stream (fcc=`%4.4s')",
 719                  (char*)&p_fmt->i_codec );
 720         id->id = p_sys->p_out->pf_add( p_sys->p_out, p_fmt );
 721         id->b_transcode = VLC_FALSE;
 722
 723         if( !id->id ) goto error;
 724     }
 725
 726     return id;
 727
 728  error:
 729     if( id->p_decoder )
 730     {
 731         vlc_object_detach( id->p_decoder );
 732         vlc_object_destroy( id->p_decoder );
 733     }
 734
 735     if( id->p_encoder )
 736     {
 737         vlc_object_detach( id->p_encoder );
 738         vlc_object_destroy( id->p_encoder );
 739     }
 740
 741     free( id );
 742     return NULL;
 743 }
 744
 745 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
 746 {
 747     sout_stream_sys_t *p_sys = p_stream->p_sys;
 748
 749     if( id->b_transcode )
 750     {
 751         switch( id->p_decoder->fmt_in.i_cat )
 752         {
 753         case AUDIO_ES:
 754             transcode_audio_close( p_stream, id );
 755             break;
 756         case VIDEO_ES:
 757             transcode_video_close( p_stream, id );
 758             break;
 759         case SPU_ES:
 760             transcode_spu_close( p_stream, id );
 761             break;
 762         }
 763     }
 764
 765     if( id->id ) p_sys->p_out->pf_del( p_sys->p_out, id->id );
 766
 767     if( id->p_decoder )
 768     {
 769         vlc_object_detach( id->p_decoder );
 770         vlc_object_destroy( id->p_decoder );
 771     }
 772
 773     if( id->p_encoder )
 774     {
 775         vlc_object_detach( id->p_encoder );
 776         vlc_object_destroy( id->p_encoder );
 777     }
 778
 779     free( id );
 780
 781     return VLC_SUCCESS;
 782 }
 783
 784 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
 785                  block_t *p_buffer )
 786 {
 787     sout_stream_sys_t *p_sys = p_stream->p_sys;
 788     block_t *p_out;
 789
 790     if( !id->b_transcode && id->id )
 791     {
 792         if( p_sys->b_master_sync && p_sys->i_master_drift )
 793         {
 794             if( p_buffer->i_dts > 0 )
 795             {
 796                 p_buffer->i_dts -= p_sys->i_master_drift;
 797                 if( p_buffer->i_dts < 0 )
 798                 {
 799                     block_Release( p_buffer );
 800                     return VLC_EGENERIC;
 801                 }
 802             }
 803             if( p_buffer->i_pts > 0 )
 804             {
 805                 p_buffer->i_pts -= p_sys->i_master_drift;
 806                 if( p_buffer->i_pts < 0 )
 807                 {
 808                     block_Release( p_buffer );
 809                     return VLC_EGENERIC;
 810                 }
 811             }
 812         }
 813
 814         return p_sys->p_out->pf_send( p_sys->p_out, id->id, p_buffer );
 815     }
 816     else if( !id->b_transcode )
 817     {
 818         block_Release( p_buffer );
 819         return VLC_EGENERIC;
 820     }
 821
 822     switch( id->p_decoder->fmt_in.i_cat )
 823     {
 824     case AUDIO_ES:
 825         transcode_audio_process( p_stream, id, p_buffer, &p_out );
 826         break;
 827
 828     case VIDEO_ES:
 829         if( transcode_video_process( p_stream, id, p_buffer, &p_out )
 830             != VLC_SUCCESS )
 831         {
 832             return VLC_EGENERIC;
 833         }
 834         break;
 835
 836     case SPU_ES:
 837         if( transcode_spu_process( p_stream, id, p_buffer, &p_out ) !=
 838             VLC_SUCCESS )
 839         {
 840             return VLC_EGENERIC;
 841         }
 842         break;
 843
 844     default:
 845         block_Release( p_buffer );
 846         break;
 847     }
 848
 849     if( p_out ) return p_sys->p_out->pf_send( p_sys->p_out, id->id, p_out );
 850     return VLC_SUCCESS;
 851 }
 852
 853 /****************************************************************************
 854  * decoder reencoder part
 855  ****************************************************************************/
 856 int audio_BitsPerSample( vlc_fourcc_t i_format )
 857 {
 858     switch( i_format )
 859     {
 860     case VLC_FOURCC('u','8',' ',' '):
 861     case VLC_FOURCC('s','8',' ',' '):
 862         return 8;
 863
 864     case VLC_FOURCC('u','1','6','l'):
 865     case VLC_FOURCC('s','1','6','l'):
 866     case VLC_FOURCC('u','1','6','b'):
 867     case VLC_FOURCC('s','1','6','b'):
 868         return 16;
 869
 870     case VLC_FOURCC('u','2','4','l'):
 871     case VLC_FOURCC('s','2','4','l'):
 872     case VLC_FOURCC('u','2','4','b'):
 873     case VLC_FOURCC('s','2','4','b'):
 874         return 24;
 875
 876     case VLC_FOURCC('u','3','2','l'):
 877     case VLC_FOURCC('s','3','2','l'):
 878     case VLC_FOURCC('u','3','2','b'):
 879     case VLC_FOURCC('s','3','2','b'):
 880     case VLC_FOURCC('f','l','3','2'):
 881     case VLC_FOURCC('f','i','3','2'):
 882         return 32;
 883
 884     case VLC_FOURCC('f','l','6','4'):
 885         return 64;
 886     }
 887
 888     return 0;
 889 }
 890
 891 static filter_t *transcode_audio_filter_new( sout_stream_t *p_stream,
 892                                              sout_stream_id_t *id,
 893                                              es_format_t *p_fmt_in,
 894                                              es_format_t *p_fmt_out )
 895 {
 896     filter_t *p_filter = vlc_object_create( p_stream, VLC_OBJECT_FILTER );
 897
 898     vlc_object_attach( p_filter, p_stream );
 899     p_filter->pf_audio_buffer_new = __block_New;
 900
 901     p_filter->fmt_in = *p_fmt_in;
 902     p_filter->fmt_out = *p_fmt_out;
 903
 904     p_filter->p_module = module_Need( p_filter, "audio filter2", 0, 0 );
 905     if( p_filter->p_module )
 906     {
 907         p_filter->fmt_out.audio.i_bitspersample =
 908             audio_BitsPerSample( p_filter->fmt_out.i_codec );
 909         *p_fmt_in = p_filter->fmt_out;
 910     }
 911     else
 912     {
 913         vlc_object_detach( p_filter );
 914         vlc_object_destroy( p_filter );
 915         p_filter = 0;
 916     }
 917
 918     return p_filter;
 919 }
 920
 921 static int transcode_audio_new( sout_stream_t *p_stream,
 922                                 sout_stream_id_t *id )
 923 {
 924     sout_stream_sys_t *p_sys = p_stream->p_sys;
 925     es_format_t fmt_last;
 926     int i_pass = 6;
 927
 928     /*
 929      * Open decoder
 930      */
 931
 932     /* Initialization of decoder structures */
 933     id->p_decoder->pf_decode_audio = 0;
 934     id->p_decoder->pf_aout_buffer_new = audio_new_buffer;
 935     id->p_decoder->pf_aout_buffer_del = audio_del_buffer;
 936     //id->p_decoder->p_cfg = p_sys->p_video_cfg;
 937
 938     id->p_decoder->p_module =
 939         module_Need( id->p_decoder, "decoder", "$codec", 0 );
 940
 941     if( !id->p_decoder->p_module )
 942     {
 943         msg_Err( p_stream, "cannot find decoder" );
 944         return VLC_EGENERIC;
 945     }
 946     id->p_decoder->fmt_out.audio.i_bitspersample =
 947         audio_BitsPerSample( id->p_decoder->fmt_out.i_codec );
 948     fmt_last = id->p_decoder->fmt_out;
 949     /* FIX decoders so we don't have to do this */
 950     fmt_last.audio.i_rate = id->p_decoder->fmt_in.audio.i_rate;
 951
 952     /*
 953      * Open encoder
 954      */
 955
 956     /* Initialization of encoder format structures */
 957     es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
 958                     id->p_decoder->fmt_out.i_codec );
 959     id->p_encoder->fmt_in.audio.i_format = id->p_decoder->fmt_out.i_codec;
 960
 961     /* Sanity check for audio channels */
 962     id->p_encoder->fmt_out.audio.i_channels =
 963         __MIN( id->p_encoder->fmt_out.audio.i_channels,
 964                id->p_decoder->fmt_out.audio.i_channels );
 965     if( id->p_decoder->fmt_out.audio.i_channels ==
 966         id->p_encoder->fmt_out.audio.i_channels )
 967         id->p_encoder->fmt_out.audio.i_physical_channels =
 968             id->p_encoder->fmt_out.audio.i_original_channels =
 969                 id->p_decoder->fmt_out.audio.i_physical_channels;
 970     else
 971         id->p_encoder->fmt_out.audio.i_physical_channels =
 972             id->p_encoder->fmt_out.audio.i_original_channels =
 973                 pi_channels_maps[id->p_encoder->fmt_out.audio.i_channels];
 974
 975     /* Initialization of encoder format structures */
 976     es_format_Init( &id->p_encoder->fmt_in, AUDIO_ES, AOUT_FMT_S16_NE );
 977     id->p_encoder->fmt_in.audio.i_format = AOUT_FMT_S16_NE;
 978     id->p_encoder->fmt_in.audio.i_rate = id->p_encoder->fmt_out.audio.i_rate;
 979     id->p_encoder->fmt_in.audio.i_physical_channels =
 980         id->p_encoder->fmt_in.audio.i_original_channels =
 981             id->p_encoder->fmt_out.audio.i_physical_channels;
 982     id->p_encoder->fmt_in.audio.i_channels =
 983         id->p_encoder->fmt_out.audio.i_channels;
 984     id->p_encoder->fmt_in.audio.i_bitspersample =
 985         audio_BitsPerSample( id->p_encoder->fmt_in.i_codec );
 986
 987     id->p_encoder->p_cfg = p_stream->p_sys->p_audio_cfg;
 988
 989     id->p_encoder->p_module =
 990         module_Need( id->p_encoder, "encoder", p_sys->psz_aenc, VLC_TRUE );
 991     if( !id->p_encoder->p_module )
 992     {
 993         msg_Err( p_stream, "cannot find encoder" );
 994         module_Unneed( id->p_decoder, id->p_decoder->p_module );
 995         id->p_decoder->p_module = 0;
 996         return VLC_EGENERIC;
 997     }
 998     id->p_encoder->fmt_in.audio.i_format = id->p_encoder->fmt_in.i_codec;
 999     id->p_encoder->fmt_in.audio.i_bitspersample =
1000         audio_BitsPerSample( id->p_encoder->fmt_in.i_codec );
1001
1002     /* Load conversion filters */
1003     if( fmt_last.audio.i_channels != id->p_encoder->fmt_in.audio.i_channels ||
1004         fmt_last.audio.i_rate != id->p_encoder->fmt_in.audio.i_rate )
1005     {
1006         /* We'll have to go through fl32 first */
1007         es_format_t fmt_out = id->p_encoder->fmt_in;
1008         fmt_out.i_codec = fmt_out.audio.i_format = VLC_FOURCC('f','l','3','2');
1009
1010         id->pp_filter[id->i_filter] =
1011             transcode_audio_filter_new( p_stream, id, &fmt_last, &fmt_out );
1012
1013         if( id->pp_filter[id->i_filter] ) id->i_filter++;
1014     }
1015
1016     while( i_pass-- )
1017     {
1018         if( fmt_last.audio.i_channels !=
1019             id->p_encoder->fmt_in.audio.i_channels ||
1020             fmt_last.audio.i_rate != id->p_encoder->fmt_in.audio.i_rate ||
1021             fmt_last.i_codec != id->p_encoder->fmt_in.i_codec )
1022         {
1023             id->pp_filter[id->i_filter] =
1024                 transcode_audio_filter_new( p_stream, id, &fmt_last,
1025                                             &id->p_encoder->fmt_in );
1026
1027             if( id->pp_filter[id->i_filter] ) id->i_filter++;
1028             else break;
1029         }
1030     }
1031
1032     /* Final checks to see if conversions were successful */
1033     if( fmt_last.i_codec != id->p_encoder->fmt_in.i_codec )
1034     {
1035         msg_Dbg( p_stream, "no audio filter found (%4.4s->%4.4s)",
1036                  (char *)&fmt_last.i_codec,
1037                  (char *)&id->p_encoder->fmt_in.i_codec );
1038         transcode_audio_close( p_stream, id );
1039         return VLC_EGENERIC;
1040     }
1041
1042     if( fmt_last.audio.i_channels != id->p_encoder->fmt_in.audio.i_channels )
1043     {
1044         msg_Dbg( p_stream, "no audio filter found for mixing from"
1045                  " %i to %i channels", fmt_last.audio.i_channels,
1046                  id->p_encoder->fmt_in.audio.i_channels );
1047
1048         id->p_encoder->fmt_in.audio.i_channels = fmt_last.audio.i_channels;
1049         id->p_encoder->fmt_out.audio.i_channels = fmt_last.audio.i_channels;
1050
1051         id->p_encoder->fmt_in.audio.i_physical_channels =
1052             id->p_encoder->fmt_in.audio.i_original_channels =
1053                 fmt_last.audio.i_physical_channels;
1054         id->p_encoder->fmt_out.audio.i_physical_channels =
1055             id->p_encoder->fmt_out.audio.i_original_channels =
1056                 fmt_last.audio.i_physical_channels;
1057     }
1058
1059     if( fmt_last.audio.i_rate != id->p_encoder->fmt_in.audio.i_rate )
1060     {
1061         msg_Dbg( p_stream, "no audio filter found for resampling from"
1062                  " %iHz to %iHz", fmt_last.audio.i_rate,
1063                  id->p_encoder->fmt_in.audio.i_rate );
1064         id->p_encoder->fmt_in.audio.i_rate = fmt_last.audio.i_rate;
1065         id->p_encoder->fmt_out.audio.i_rate = fmt_last.audio.i_rate;
1066     }
1067
1068     /* FIXME: Hack for mp3 transcoding support */
1069     if( id->p_encoder->fmt_out.i_codec == VLC_FOURCC( 'm','p','3',' ' ) )
1070         id->p_encoder->fmt_out.i_codec = VLC_FOURCC( 'm','p','g','a' );
1071
1072     return VLC_SUCCESS;
1073 }
1074
1075 static void transcode_audio_close( sout_stream_t *p_stream,
1076                                    sout_stream_id_t *id )
1077 {
1078     int i;
1079
1080     /* Close decoder */
1081     if( id->p_decoder->p_module )
1082         module_Unneed( id->p_decoder, id->p_decoder->p_module );
1083     id->p_decoder->p_module = 0;
1084
1085     /* Close encoder */
1086     if( id->p_encoder->p_module )
1087         module_Unneed( id->p_encoder, id->p_encoder->p_module );
1088     id->p_encoder->p_module = 0;
1089
1090     /* Close filters */
1091     for( i = 0; i < id->i_filter; i++ )
1092     {
1093         vlc_object_detach( id->pp_filter[i] );
1094         if( id->pp_filter[i]->p_module )
1095             module_Unneed( id->pp_filter[i], id->pp_filter[i]->p_module );
1096         vlc_object_destroy( id->pp_filter[i] );
1097     }
1098 }
1099
1100 static int transcode_audio_process( sout_stream_t *p_stream,
1101                                     sout_stream_id_t *id,
1102                                     block_t *in, block_t **out )
1103 {
1104     sout_stream_sys_t *p_sys = p_stream->p_sys;
1105     aout_buffer_t *p_audio_buf;
1106     block_t *p_block, *p_audio_block;
1107     int i;
1108     *out = NULL;
1109
1110     while( (p_audio_buf = id->p_decoder->pf_decode_audio( id->p_decoder,
1111                                                           &in )) )
1112     {
1113         if( p_sys->b_master_sync )
1114         {
1115             mtime_t i_dts = date_Get( &id->interpolated_pts ) + 1;
1116             p_sys->i_master_drift = p_audio_buf->start_date - i_dts;
1117             date_Increment( &id->interpolated_pts, p_audio_buf->i_nb_samples );
1118             p_audio_buf->start_date -= p_sys->i_master_drift;
1119             p_audio_buf->end_date -= p_sys->i_master_drift;
1120         }
1121
1122         p_audio_block = p_audio_buf->p_sys;
1123         p_audio_block->i_buffer = p_audio_buf->i_nb_bytes;
1124         p_audio_block->i_dts = p_audio_block->i_pts =
1125             p_audio_buf->start_date;
1126         p_audio_block->i_length = p_audio_buf->end_date -
1127             p_audio_buf->start_date;
1128         p_audio_block->i_samples = p_audio_buf->i_nb_samples;
1129
1130         /* Run filter chain */
1131         for( i = 0; i < id->i_filter; i++ )
1132         {
1133             p_audio_block =
1134                 id->pp_filter[i]->pf_audio_filter( id->pp_filter[i],
1135                                                    p_audio_block );
1136         }
1137
1138         p_audio_buf->p_buffer = p_audio_block->p_buffer;
1139         p_audio_buf->i_nb_bytes = p_audio_block->i_buffer;
1140         p_audio_buf->i_nb_samples = p_audio_block->i_samples;
1141         p_audio_buf->start_date = p_audio_block->i_dts;
1142         p_audio_buf->end_date = p_audio_block->i_dts + p_audio_block->i_length;
1143
1144         p_block = id->p_encoder->pf_encode_audio( id->p_encoder, p_audio_buf );
1145         block_ChainAppend( out, p_block );
1146         block_Release( p_audio_block );
1147         free( p_audio_buf );
1148     }
1149
1150     return VLC_SUCCESS;
1151 }
1152
1153 static void audio_release_buffer( aout_buffer_t *p_buffer )
1154 {
1155     if( p_buffer && p_buffer->p_sys ) block_Release( p_buffer->p_sys );
1156     if( p_buffer ) free( p_buffer );
1157 }
1158
1159 static aout_buffer_t *audio_new_buffer( decoder_t *p_dec, int i_samples )
1160 {
1161     aout_buffer_t *p_buffer;
1162     block_t *p_block;
1163     int i_size;
1164
1165     if( p_dec->fmt_out.audio.i_bitspersample )
1166     {
1167         i_size = i_samples * p_dec->fmt_out.audio.i_bitspersample / 8 *
1168             p_dec->fmt_out.audio.i_channels;
1169     }
1170     else if( p_dec->fmt_out.audio.i_bytes_per_frame &&
1171              p_dec->fmt_out.audio.i_frame_length )
1172     {
1173         i_size = i_samples * p_dec->fmt_out.audio.i_bytes_per_frame /
1174             p_dec->fmt_out.audio.i_frame_length;
1175     }
1176     else
1177     {
1178         i_size = i_samples * 4 * p_dec->fmt_out.audio.i_channels;
1179     }
1180
1181     p_buffer = malloc( sizeof(aout_buffer_t) );
1182     p_buffer->pf_release = audio_release_buffer;
1183     p_buffer->p_sys = p_block = block_New( p_dec, i_size );
1184
1185     p_buffer->p_buffer = p_block->p_buffer;
1186     p_buffer->i_size = p_buffer->i_nb_bytes = p_block->i_buffer;
1187     p_buffer->i_nb_samples = i_samples;
1188     p_block->i_samples = i_samples;
1189
1190     return p_buffer;
1191 }
1192
1193 static void audio_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
1194 {
1195     if( p_buffer && p_buffer->p_sys ) block_Release( p_buffer->p_sys );
1196     if( p_buffer ) free( p_buffer );
1197 }
1198
1199 /*
1200  * video
1201  */
1202 static int transcode_video_new( sout_stream_t *p_stream, sout_stream_id_t *id )
1203 {
1204     sout_stream_sys_t *p_sys = p_stream->p_sys;
1205     int i;
1206
1207     /*
1208      * Open decoder
1209      */
1210
1211     /* Initialization of decoder structures */
1212     id->p_decoder->pf_decode_video = 0;
1213     id->p_decoder->pf_vout_buffer_new = video_new_buffer_decoder;
1214     id->p_decoder->pf_vout_buffer_del = video_del_buffer_decoder;
1215     id->p_decoder->pf_picture_link    = video_link_picture_decoder;
1216     id->p_decoder->pf_picture_unlink  = video_unlink_picture_decoder;
1217     id->p_decoder->p_owner = malloc( sizeof(decoder_owner_sys_t) );
1218     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1219         id->p_decoder->p_owner->pp_pics[i] = 0;
1220     //id->p_decoder->p_cfg = p_sys->p_video_cfg;
1221
1222     id->p_decoder->p_module =
1223         module_Need( id->p_decoder, "decoder", "$codec", 0 );
1224
1225     if( !id->p_decoder->p_module )
1226     {
1227         msg_Err( p_stream, "cannot find decoder" );
1228         return VLC_EGENERIC;
1229     }
1230
1231     /*
1232      * Open encoder.
1233      * Because some info about the decoded input will only be available
1234      * once the first frame is decoded, we actually only test the availability
1235      * of the encoder here.
1236      */
1237
1238     /* Initialization of encoder format structures */
1239     es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
1240                     id->p_decoder->fmt_out.i_codec );
1241     id->p_encoder->fmt_in.video.i_chroma = id->p_decoder->fmt_out.i_codec;
1242
1243     /* The dimensions will be set properly later on.
1244      * Just put sensible values so we can test an encoder is available. */
1245     id->p_encoder->fmt_in.video.i_width =
1246         id->p_encoder->fmt_out.video.i_width ?
1247         id->p_encoder->fmt_out.video.i_width :
1248         id->p_decoder->fmt_in.video.i_width ?
1249         id->p_decoder->fmt_in.video.i_width : 16;
1250     id->p_encoder->fmt_in.video.i_height =
1251         id->p_encoder->fmt_out.video.i_height ?
1252         id->p_encoder->fmt_out.video.i_height :
1253         id->p_decoder->fmt_in.video.i_height ?
1254         id->p_decoder->fmt_in.video.i_height : 16;
1255     id->p_encoder->fmt_in.video.i_frame_rate = 25;
1256     id->p_encoder->fmt_in.video.i_frame_rate_base = 1;
1257
1258     id->p_encoder->i_threads = p_sys->i_threads;
1259     id->p_encoder->p_cfg = p_sys->p_video_cfg;
1260
1261     id->p_encoder->p_module =
1262         module_Need( id->p_encoder, "encoder", p_sys->psz_venc, VLC_TRUE );
1263     if( !id->p_encoder->p_module )
1264     {
1265         msg_Err( p_stream, "cannot find encoder" );
1266         module_Unneed( id->p_decoder, id->p_decoder->p_module );
1267         id->p_decoder->p_module = 0;
1268         return VLC_EGENERIC;
1269     }
1270
1271     /* Close the encoder.
1272      * We'll open it only when we have the first frame. */
1273     module_Unneed( id->p_encoder, id->p_encoder->p_module );
1274     id->p_encoder->p_module = NULL;
1275
1276     if( p_sys->i_threads >= 1 )
1277     {
1278         p_sys->id_video = id;
1279         vlc_mutex_init( p_stream, &p_sys->lock_out );
1280         vlc_cond_init( p_stream, &p_sys->cond );
1281         memset( p_sys->pp_pics, 0, sizeof(p_sys->pp_pics) );
1282         p_sys->i_first_pic = 0;
1283         p_sys->i_last_pic = 0;
1284         p_sys->p_buffers = NULL;
1285         p_sys->b_die = p_sys->b_error = 0;
1286         if( vlc_thread_create( p_sys, "encoder", EncoderThread,
1287                                VLC_THREAD_PRIORITY_VIDEO, VLC_FALSE ) )
1288         {
1289             msg_Err( p_stream, "cannot spawn encoder thread" );
1290             module_Unneed( id->p_decoder, id->p_decoder->p_module );
1291             id->p_decoder->p_module = 0;
1292             return VLC_EGENERIC;
1293         }
1294     }
1295
1296     date_Set( &id->interpolated_pts, 0 );
1297
1298     return VLC_SUCCESS;
1299 }
1300
1301 static int transcode_video_encoder_open( sout_stream_t *p_stream,
1302                                          sout_stream_id_t *id )
1303 {
1304     sout_stream_sys_t *p_sys = p_stream->p_sys;
1305
1306     /* Hack because of the copy packetizer which can fail to detect the
1307      * proper size (which forces us to wait until the 1st frame
1308      * is decoded) */
1309     int i_width = id->p_decoder->fmt_out.video.i_width -
1310         p_sys->i_crop_left - p_sys->i_crop_right;
1311     int i_height = id->p_decoder->fmt_out.video.i_height -
1312         p_sys->i_crop_top - p_sys->i_crop_bottom;
1313
1314     if( id->p_encoder->fmt_out.video.i_width <= 0 &&
1315         id->p_encoder->fmt_out.video.i_height <= 0 && p_sys->f_scale )
1316     {
1317         /* Apply the scaling */
1318         id->p_encoder->fmt_out.video.i_width = i_width * p_sys->f_scale;
1319         id->p_encoder->fmt_out.video.i_height = i_height * p_sys->f_scale;
1320     }
1321     else if( id->p_encoder->fmt_out.video.i_width > 0 &&
1322              id->p_encoder->fmt_out.video.i_height <= 0 )
1323     {
1324         id->p_encoder->fmt_out.video.i_height =
1325             id->p_encoder->fmt_out.video.i_width / (double)i_width * i_height;
1326     }
1327     else if( id->p_encoder->fmt_out.video.i_width <= 0 &&
1328              id->p_encoder->fmt_out.video.i_height > 0 )
1329     {
1330         id->p_encoder->fmt_out.video.i_width =
1331             id->p_encoder->fmt_out.video.i_height / (double)i_height * i_width;
1332     }
1333
1334     /* Make sure the size is at least a multiple of 2 */
1335     id->p_encoder->fmt_out.video.i_width =
1336         (id->p_encoder->fmt_out.video.i_width + 1) >> 1 << 1;
1337     id->p_encoder->fmt_out.video.i_height =
1338         (id->p_encoder->fmt_out.video.i_height + 1) >> 1 << 1;
1339
1340     id->p_encoder->fmt_in.video.i_width =
1341         id->p_encoder->fmt_out.video.i_width;
1342     id->p_encoder->fmt_in.video.i_height =
1343         id->p_encoder->fmt_out.video.i_height;
1344
1345     if( !id->p_encoder->fmt_out.video.i_frame_rate ||
1346         !id->p_encoder->fmt_out.video.i_frame_rate_base )
1347     {
1348         if( id->p_decoder->fmt_out.video.i_frame_rate &&
1349             id->p_decoder->fmt_out.video.i_frame_rate_base )
1350         {
1351             id->p_encoder->fmt_out.video.i_frame_rate =
1352                 id->p_decoder->fmt_out.video.i_frame_rate;
1353             id->p_encoder->fmt_out.video.i_frame_rate_base =
1354                 id->p_decoder->fmt_out.video.i_frame_rate_base;
1355         }
1356         else
1357         {
1358             /* Pick a sensible default value */
1359             id->p_encoder->fmt_out.video.i_frame_rate = 25;
1360             id->p_encoder->fmt_out.video.i_frame_rate_base = 1;
1361         }
1362     }
1363
1364     id->p_encoder->fmt_in.video.i_frame_rate =
1365         id->p_encoder->fmt_out.video.i_frame_rate;
1366     id->p_encoder->fmt_in.video.i_frame_rate_base =
1367         id->p_encoder->fmt_out.video.i_frame_rate_base;
1368
1369     date_Init( &id->interpolated_pts,
1370                id->p_encoder->fmt_out.video.i_frame_rate,
1371                id->p_encoder->fmt_out.video.i_frame_rate_base );
1372
1373     /* Check whether a particular aspect ratio was requested */
1374     if( !id->p_encoder->fmt_out.video.i_aspect )
1375     {
1376         id->p_encoder->fmt_out.video.i_aspect =
1377             id->p_decoder->fmt_out.video.i_aspect;
1378     }
1379     id->p_encoder->fmt_in.video.i_aspect =
1380         id->p_encoder->fmt_out.video.i_aspect;
1381
1382     id->p_encoder->p_module =
1383         module_Need( id->p_encoder, "encoder", p_sys->psz_venc, VLC_TRUE );
1384     if( !id->p_encoder->p_module )
1385     {
1386         msg_Err( p_stream, "cannot find encoder" );
1387         return VLC_EGENERIC;
1388     }
1389
1390     id->p_encoder->fmt_in.video.i_chroma = id->p_encoder->fmt_in.i_codec;
1391
1392     /* Hack for mp2v/mp1v transcoding support */
1393     if( id->p_encoder->fmt_out.i_codec == VLC_FOURCC('m','p','1','v') ||
1394         id->p_encoder->fmt_out.i_codec == VLC_FOURCC('m','p','2','v') )
1395     {
1396         id->p_encoder->fmt_out.i_codec = VLC_FOURCC('m','p','g','v');
1397     }
1398
1399     id->id = p_stream->p_sys->p_out->pf_add( p_stream->p_sys->p_out,
1400                                              &id->p_encoder->fmt_out );
1401     if( !id->id )
1402     {
1403         msg_Err( p_stream, "cannot add this stream" );
1404         return VLC_EGENERIC;
1405     }
1406
1407     return VLC_SUCCESS;
1408 }
1409
1410 static void transcode_video_close( sout_stream_t *p_stream,
1411                                    sout_stream_id_t *id )
1412 {
1413     int i, j;
1414
1415     if( p_stream->p_sys->i_threads >= 1 )
1416     {
1417         vlc_mutex_lock( &p_stream->p_sys->lock_out );
1418         p_stream->p_sys->b_die = 1;
1419         vlc_cond_signal( &p_stream->p_sys->cond );
1420         vlc_mutex_unlock( &p_stream->p_sys->lock_out );
1421         vlc_thread_join( p_stream->p_sys );
1422         vlc_mutex_destroy( &p_stream->p_sys->lock_out );
1423         vlc_cond_destroy( &p_stream->p_sys->cond );
1424     }
1425
1426     /* Close decoder */
1427     if( id->p_decoder->p_module )
1428         module_Unneed( id->p_decoder, id->p_decoder->p_module );
1429
1430     if( id->p_decoder->p_owner )
1431     {
1432         /* Clean-up pictures ring buffer */
1433         for( i = 0; i < PICTURE_RING_SIZE; i++ )
1434         {
1435             if( id->p_decoder->p_owner->pp_pics[i] )
1436                 video_del_buffer( VLC_OBJECT(id->p_decoder),
1437                                   id->p_decoder->p_owner->pp_pics[i] );
1438         }
1439         free( id->p_decoder->p_owner );
1440     }
1441
1442     /* Close encoder */
1443     if( id->p_encoder->p_module )
1444         module_Unneed( id->p_encoder, id->p_encoder->p_module );
1445
1446     /* Close filters */
1447     for( i = 0; i < id->i_filter; i++ )
1448     {
1449         vlc_object_detach( id->pp_filter[i] );
1450         if( id->pp_filter[i]->p_module )
1451             module_Unneed( id->pp_filter[i], id->pp_filter[i]->p_module );
1452
1453         /* Clean-up pictures ring buffer */
1454         for( j = 0; j < PICTURE_RING_SIZE; j++ )
1455         {
1456             if( id->pp_filter[i]->p_owner->pp_pics[j] )
1457                 video_del_buffer( VLC_OBJECT(id->pp_filter[i]),
1458                                   id->pp_filter[i]->p_owner->pp_pics[j] );
1459         }
1460         free( id->pp_filter[i]->p_owner );
1461
1462         vlc_object_destroy( id->pp_filter[i] );
1463     }
1464 }
1465
1466 static int transcode_video_process( sout_stream_t *p_stream,
1467                                     sout_stream_id_t *id,
1468                                     block_t *in, block_t **out )
1469 {
1470     sout_stream_sys_t *p_sys = p_stream->p_sys;
1471     int i_duplicate = 1, i;
1472     picture_t *p_pic;
1473     *out = NULL;
1474
1475     while( (p_pic = id->p_decoder->pf_decode_video( id->p_decoder, &in )) )
1476     {
1477         subpicture_t *p_subpic = 0;
1478
1479         if( p_sys->b_master_sync )
1480         {
1481             mtime_t i_video_drift;
1482             mtime_t i_master_drift = p_sys->i_master_drift;
1483             mtime_t i_pts;
1484
1485             if( !i_master_drift )
1486             {
1487                 /* No audio track ? */
1488                 p_sys->i_master_drift = i_master_drift = p_pic->date;
1489             }
1490
1491             i_pts = date_Get( &id->interpolated_pts ) + 1;
1492             i_video_drift = p_pic->date - i_pts;
1493             i_duplicate = 1;
1494
1495             /* Set the pts of the frame being encoded */
1496             p_pic->date = i_pts;
1497
1498             if( i_video_drift < i_master_drift - 50000 )
1499             {
1500 #if 0
1501                 msg_Dbg( p_stream, "dropping frame (%i)",
1502                          (int)(i_video_drift - i_master_drift) );
1503 #endif
1504                 p_pic->pf_release( p_pic );
1505                 return VLC_EGENERIC;
1506             }
1507             else if( i_video_drift > i_master_drift + 50000 )
1508             {
1509 #if 0
1510                 msg_Dbg( p_stream, "adding frame (%i)",
1511                          (int)(i_video_drift - i_master_drift) );
1512 #endif
1513                 i_duplicate = 2;
1514             }
1515         }
1516
1517         if( !id->p_encoder->p_module )
1518         {
1519             if( transcode_video_encoder_open( p_stream, id ) != VLC_SUCCESS )
1520             {
1521                 p_pic->pf_release( p_pic );
1522                 transcode_video_close( p_stream, id );
1523                 id->b_transcode = VLC_FALSE;
1524                 return VLC_EGENERIC;
1525             }
1526
1527             /* Deinterlace */
1528             if( p_stream->p_sys->b_deinterlace )
1529             {
1530                 id->pp_filter[id->i_filter] =
1531                     vlc_object_create( p_stream, VLC_OBJECT_FILTER );
1532                 vlc_object_attach( id->pp_filter[id->i_filter], p_stream );
1533
1534                 id->pp_filter[id->i_filter]->pf_vout_buffer_new =
1535                     video_new_buffer_filter;
1536                 id->pp_filter[id->i_filter]->pf_vout_buffer_del =
1537                     video_del_buffer_filter;
1538
1539                 id->pp_filter[id->i_filter]->fmt_in = id->p_decoder->fmt_out;
1540                 id->pp_filter[id->i_filter]->fmt_out = id->p_decoder->fmt_out;
1541                 id->pp_filter[id->i_filter]->p_module =
1542                     module_Need( id->pp_filter[id->i_filter],
1543                                  "video filter2", "deinterlace", 0 );
1544                 if( id->pp_filter[id->i_filter]->p_module )
1545                 {
1546                     id->pp_filter[id->i_filter]->p_owner =
1547                         malloc( sizeof(filter_owner_sys_t) );
1548                     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1549                         id->pp_filter[id->i_filter]->p_owner->pp_pics[i] = 0;
1550
1551                     id->i_filter++;
1552                 }
1553                 else
1554                 {
1555                     msg_Dbg( p_stream, "no video filter found" );
1556                     vlc_object_detach( id->pp_filter[id->i_filter] );
1557                     vlc_object_destroy( id->pp_filter[id->i_filter] );
1558                 }
1559             }
1560
1561             /* Check if we need a filter for chroma conversion or resizing */
1562             if( id->p_decoder->fmt_out.video.i_chroma !=
1563                 id->p_encoder->fmt_in.video.i_chroma ||
1564                 id->p_decoder->fmt_out.video.i_width !=
1565                 id->p_encoder->fmt_out.video.i_width ||
1566                 id->p_decoder->fmt_out.video.i_height !=
1567                 id->p_encoder->fmt_out.video.i_height ||
1568                 p_sys->i_crop_top > 0 || p_sys->i_crop_bottom > 0 ||
1569                 p_sys->i_crop_left > 0 || p_sys->i_crop_right > 0 )
1570             {
1571                 id->pp_filter[id->i_filter] =
1572                     vlc_object_create( p_stream, VLC_OBJECT_FILTER );
1573                 vlc_object_attach( id->pp_filter[id->i_filter], p_stream );
1574
1575                 id->pp_filter[id->i_filter]->pf_vout_buffer_new =
1576                     video_new_buffer_filter;
1577                 id->pp_filter[id->i_filter]->pf_vout_buffer_del =
1578                     video_del_buffer_filter;
1579
1580                 id->pp_filter[id->i_filter]->fmt_in = id->p_decoder->fmt_out;
1581                 id->pp_filter[id->i_filter]->fmt_out = id->p_encoder->fmt_in;
1582                 id->pp_filter[id->i_filter]->p_module =
1583                     module_Need( id->pp_filter[id->i_filter],
1584                                  "video filter2", 0, 0 );
1585                 if( id->pp_filter[id->i_filter]->p_module )
1586                 {
1587                     id->pp_filter[id->i_filter]->p_owner =
1588                         malloc( sizeof(filter_owner_sys_t) );
1589                     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1590                         id->pp_filter[id->i_filter]->p_owner->pp_pics[i] = 0;
1591
1592                     id->i_filter++;
1593                 }
1594                 else
1595                 {
1596                     msg_Dbg( p_stream, "no video filter found" );
1597                     vlc_object_detach( id->pp_filter[id->i_filter] );
1598                     vlc_object_destroy( id->pp_filter[id->i_filter] );
1599
1600                     p_pic->pf_release( p_pic );
1601                     transcode_video_close( p_stream, id );
1602                     id->b_transcode = VLC_FALSE;
1603                     return VLC_EGENERIC;
1604                 }
1605             }
1606         }
1607
1608         /* Run filter chain */
1609         for( i = 0; i < id->i_filter; i++ )
1610         {
1611             p_pic = id->pp_filter[i]->pf_video_filter(id->pp_filter[i], p_pic);
1612         }
1613
1614         /*
1615          * Encoding
1616          */
1617
1618         /* Check if we have a subpicture to overlay */
1619         if( p_sys->p_spu )
1620         {
1621             p_subpic = spu_SortSubpictures( p_sys->p_spu, p_pic->date );
1622             /* TODO: get another pic */
1623         }
1624
1625         /* Overlay subpicture */
1626         if( p_subpic )
1627         {
1628             int i_scale_width, i_scale_height;
1629             video_format_t *p_fmt;
1630
1631             i_scale_width = id->p_encoder->fmt_in.video.i_width * 1000 /
1632                 id->p_decoder->fmt_out.video.i_width;
1633             i_scale_height = id->p_encoder->fmt_in.video.i_height * 1000 /
1634                 id->p_decoder->fmt_out.video.i_height;
1635
1636             if( p_pic->i_refcount && !id->i_filter )
1637             {
1638                 /* We can't modify the picture, we need to duplicate it */
1639                 picture_t *p_tmp = video_new_buffer_decoder( id->p_decoder );
1640                 if( p_tmp )
1641                 {
1642                     vout_CopyPicture( p_stream, p_tmp, p_pic );
1643                     p_pic->pf_release( p_pic );
1644                     p_pic = p_tmp;
1645                 }
1646             }
1647
1648             if( id->i_filter )
1649                 p_fmt = &id->pp_filter[id->i_filter -1]->fmt_out.video;
1650             else
1651                 p_fmt = &id->p_decoder->fmt_out.video;
1652
1653             /* FIXME (shouldn't have to be done here) */
1654             p_fmt->i_sar_num = p_fmt->i_aspect *
1655                 p_fmt->i_height / p_fmt->i_width;
1656             p_fmt->i_sar_den = VOUT_ASPECT_FACTOR;
1657
1658             spu_RenderSubpictures( p_sys->p_spu, p_fmt, p_pic, p_pic, p_subpic,
1659                                    i_scale_width, i_scale_height );
1660         }
1661
1662         if( p_sys->i_threads >= 1 )
1663         {
1664             vlc_mutex_lock( &p_sys->lock_out );
1665             p_sys->pp_pics[p_sys->i_last_pic++] = p_pic;
1666             p_sys->i_last_pic %= PICTURE_RING_SIZE;
1667             *out = p_sys->p_buffers;
1668             p_sys->p_buffers = NULL;
1669             vlc_cond_signal( &p_sys->cond );
1670             vlc_mutex_unlock( &p_sys->lock_out );
1671         }
1672         else
1673         {
1674             block_t *p_block;
1675             p_block = id->p_encoder->pf_encode_video( id->p_encoder, p_pic );
1676             block_ChainAppend( out, p_block );
1677
1678             if( p_sys->b_master_sync )
1679                 date_Increment( &id->interpolated_pts, 1 );
1680
1681             if( p_sys->b_master_sync && i_duplicate > 1 )
1682             {
1683                 mtime_t i_pts = date_Get( &id->interpolated_pts ) + 1;
1684                 date_Increment( &id->interpolated_pts, 1 );
1685                 p_pic->date = i_pts;
1686                 p_block = id->p_encoder->pf_encode_video(id->p_encoder, p_pic);
1687                 block_ChainAppend( out, p_block );
1688             }
1689
1690             p_pic->pf_release( p_pic );
1691         }
1692     }
1693
1694     return VLC_SUCCESS;
1695 }
1696
1697 static int EncoderThread( sout_stream_sys_t *p_sys )
1698 {
1699     sout_stream_id_t *id = p_sys->id_video;
1700     picture_t *p_pic;
1701
1702     while( !p_sys->b_die && !p_sys->b_error )
1703     {
1704         block_t *p_block;
1705
1706         vlc_mutex_lock( &p_sys->lock_out );
1707         while( p_sys->i_last_pic == p_sys->i_first_pic )
1708         {
1709             vlc_cond_wait( &p_sys->cond, &p_sys->lock_out );
1710             if( p_sys->b_die || p_sys->b_error ) break;
1711         }
1712         if( p_sys->b_die || p_sys->b_error )
1713         {
1714             vlc_mutex_unlock( &p_sys->lock_out );
1715             break;
1716         }
1717
1718         p_pic = p_sys->pp_pics[p_sys->i_first_pic++];
1719         p_sys->i_first_pic %= PICTURE_RING_SIZE;
1720         vlc_mutex_unlock( &p_sys->lock_out );
1721
1722         p_block = id->p_encoder->pf_encode_video( id->p_encoder, p_pic );
1723         vlc_mutex_lock( &p_sys->lock_out );
1724         block_ChainAppend( &p_sys->p_buffers, p_block );
1725
1726         if( p_sys->b_master_sync )
1727             date_Increment( &id->interpolated_pts, 1 );
1728
1729 #if 0
1730         if( p_sys->b_master_sync && i_duplicate > 1 )
1731         {
1732             mtime_t i_pts = date_Get( &id->interpolated_pts ) + 1;
1733             date_Increment( &id->interpolated_pts, 1 );
1734             p_pic->date = i_pts;
1735             p_block = id->p_encoder->pf_encode_video(id->p_encoder, p_pic);
1736             block_ChainAppend( &p_sys->p_buffers, p_block );
1737         }
1738 #endif
1739         vlc_mutex_unlock( &p_sys->lock_out );
1740
1741         p_pic->pf_release( p_pic );
1742     }
1743
1744     while( p_sys->i_last_pic != p_sys->i_first_pic )
1745     {
1746         p_pic = p_sys->pp_pics[p_sys->i_first_pic++];
1747         p_sys->i_first_pic %= PICTURE_RING_SIZE;
1748
1749         p_pic->pf_release( p_pic );
1750     }
1751
1752     block_ChainRelease( p_sys->p_buffers );
1753
1754     return 0;
1755 }
1756
1757 struct picture_sys_t
1758 {
1759     vlc_object_t *p_owner;
1760 };
1761
1762 static void video_release_buffer( picture_t *p_pic )
1763 {
1764     if( p_pic && !p_pic->i_refcount && p_pic->pf_release && p_pic->p_sys )
1765     {
1766         video_del_buffer_decoder( (decoder_t *)p_pic->p_sys->p_owner, p_pic );
1767     }
1768     else if( p_pic && p_pic->i_refcount > 0 ) p_pic->i_refcount--;
1769 }
1770
1771 static picture_t *video_new_buffer( vlc_object_t *p_this, picture_t **pp_ring )
1772 {
1773     decoder_t *p_dec = (decoder_t *)p_this;
1774     picture_t *p_pic;
1775     int i;
1776
1777     /* Find an empty space in the picture ring buffer */
1778     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1779     {
1780         if( pp_ring[i] != 0 && pp_ring[i]->i_status == DESTROYED_PICTURE )
1781         {
1782             pp_ring[i]->i_status = RESERVED_PICTURE;
1783             return pp_ring[i];
1784         }
1785     }
1786     for( i = 0; i < PICTURE_RING_SIZE; i++ )
1787     {
1788         if( pp_ring[i] == 0 ) break;
1789     }
1790
1791     if( i == PICTURE_RING_SIZE )
1792     {
1793         msg_Err( p_this, "decoder/filter is leaking pictures, "
1794                  "resetting its ring buffer" );
1795
1796         for( i = 0; i < PICTURE_RING_SIZE; i++ )
1797         {
1798             pp_ring[i]->pf_release( pp_ring[i] );
1799         }
1800
1801         i = 0;
1802     }
1803
1804     p_pic = malloc( sizeof(picture_t) );
1805     p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
1806     vout_AllocatePicture( VLC_OBJECT(p_dec), p_pic,
1807                           p_dec->fmt_out.video.i_chroma,
1808                           p_dec->fmt_out.video.i_width,
1809                           p_dec->fmt_out.video.i_height,
1810                           p_dec->fmt_out.video.i_aspect );
1811
1812     if( !p_pic->i_planes )
1813     {
1814         free( p_pic );
1815         return 0;
1816     }
1817
1818     p_pic->pf_release = video_release_buffer;
1819     p_pic->p_sys = malloc( sizeof(picture_sys_t) );
1820     p_pic->p_sys->p_owner = p_this;
1821     p_pic->i_status = RESERVED_PICTURE;
1822
1823     pp_ring[i] = p_pic;
1824
1825     return p_pic;
1826 }
1827
1828 static picture_t *video_new_buffer_decoder( decoder_t *p_dec )
1829 {
1830     return video_new_buffer( VLC_OBJECT(p_dec),
1831                              p_dec->p_owner->pp_pics );
1832 }
1833
1834 static picture_t *video_new_buffer_filter( filter_t *p_filter )
1835 {
1836     return video_new_buffer( VLC_OBJECT(p_filter),
1837                              p_filter->p_owner->pp_pics );
1838 }
1839
1840 static void video_del_buffer( vlc_object_t *p_this, picture_t *p_pic )
1841 {
1842     if( p_pic && p_pic->p_data_orig ) free( p_pic->p_data_orig );
1843     if( p_pic && p_pic->p_sys ) free( p_pic->p_sys );
1844     if( p_pic ) free( p_pic );
1845 }
1846
1847 static void video_del_buffer_decoder( decoder_t *p_decoder, picture_t *p_pic )
1848 {
1849     p_pic->i_refcount = 0;
1850     p_pic->i_status = DESTROYED_PICTURE;
1851 }
1852
1853 static void video_del_buffer_filter( filter_t *p_filter, picture_t *p_pic )
1854 {
1855     p_pic->i_refcount = 0;
1856     p_pic->i_status = DESTROYED_PICTURE;
1857 }
1858
1859 static void video_link_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
1860 {
1861     p_pic->i_refcount++;
1862 }
1863
1864 static void video_unlink_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
1865 {
1866     video_release_buffer( p_pic );
1867 }
1868
1869 /*
1870  * SPU
1871  */
1872 static subpicture_t *spu_new_buffer( decoder_t * );
1873 static void spu_del_buffer( decoder_t *, subpicture_t * );
1874
1875 static int transcode_spu_new( sout_stream_t *p_stream, sout_stream_id_t *id )
1876 {
1877     sout_stream_sys_t *p_sys = p_stream->p_sys;
1878
1879     /*
1880      * Open decoder
1881      */
1882
1883     /* Initialization of decoder structures */
1884     id->p_decoder->pf_spu_buffer_new = spu_new_buffer;
1885     id->p_decoder->pf_spu_buffer_del = spu_del_buffer;
1886     id->p_decoder->p_owner = (decoder_owner_sys_t *)p_stream;
1887     //id->p_decoder->p_cfg = p_sys->p_spu_cfg;
1888
1889     id->p_decoder->p_module =
1890         module_Need( id->p_decoder, "decoder", "$codec", 0 );
1891
1892     if( !id->p_decoder->p_module )
1893     {
1894         msg_Err( p_stream, "cannot find decoder" );
1895         return VLC_EGENERIC;
1896     }
1897
1898     if( !p_sys->b_soverlay )
1899     {
1900         /*
1901          * Open encoder
1902          */
1903
1904         /* Initialization of encoder format structures */
1905         es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
1906                         id->p_decoder->fmt_in.i_codec );
1907
1908         id->p_encoder->p_cfg = p_sys->p_spu_cfg;
1909
1910         id->p_encoder->p_module =
1911             module_Need( id->p_encoder, "encoder", p_sys->psz_senc, VLC_TRUE );
1912
1913         if( !id->p_encoder->p_module )
1914         {
1915             module_Unneed( id->p_decoder, id->p_decoder->p_module );
1916             msg_Err( p_stream, "cannot find encoder" );
1917             return VLC_EGENERIC;
1918         }
1919     }
1920
1921     if( !p_sys->p_spu )
1922     {
1923         p_sys->p_spu = spu_Create( p_stream );
1924         spu_Init( p_sys->p_spu );
1925     }
1926
1927     return VLC_SUCCESS;
1928 }
1929
1930 static void transcode_spu_close( sout_stream_t *p_stream, sout_stream_id_t *id)
1931 {
1932     /* Close decoder */
1933     if( id->p_decoder->p_module )
1934         module_Unneed( id->p_decoder, id->p_decoder->p_module );
1935
1936     /* Close encoder */
1937     if( id->p_encoder->p_module )
1938         module_Unneed( id->p_encoder, id->p_encoder->p_module );
1939 }
1940
1941 static int transcode_spu_process( sout_stream_t *p_stream,
1942                                   sout_stream_id_t *id,
1943                                   block_t *in, block_t **out )
1944 {
1945     sout_stream_sys_t *p_sys = p_stream->p_sys;
1946     subpicture_t *p_subpic;
1947     *out = NULL;
1948
1949     p_subpic = id->p_decoder->pf_decode_sub( id->p_decoder, &in );
1950     if( !p_subpic ) return VLC_EGENERIC;
1951
1952     if( p_sys->b_master_sync && p_sys->i_master_drift )
1953     {
1954         p_subpic->i_start -= p_sys->i_master_drift;
1955         if( p_subpic->i_stop ) p_subpic->i_stop -= p_sys->i_master_drift;
1956     }
1957
1958     if( p_sys->b_soverlay )
1959     {
1960         spu_DisplaySubpicture( p_sys->p_spu, p_subpic );
1961     }
1962     else
1963     {
1964         block_t *p_block;
1965
1966         p_block = id->p_encoder->pf_encode_sub( id->p_encoder, p_subpic );
1967         spu_del_buffer( id->p_decoder, p_subpic );
1968
1969         if( p_block )
1970         {
1971             block_ChainAppend( out, p_block );
1972             return VLC_SUCCESS;
1973         }
1974     }
1975
1976     return VLC_EGENERIC;
1977 }
1978
1979 static subpicture_t *spu_new_buffer( decoder_t *p_dec )
1980 {
1981     sout_stream_t *p_stream = (sout_stream_t *)p_dec->p_owner;
1982     return spu_CreateSubpicture( p_stream->p_sys->p_spu );
1983 }
1984
1985 static void spu_del_buffer( decoder_t *p_dec, subpicture_t *p_subpic )
1986 {
1987     sout_stream_t *p_stream = (sout_stream_t *)p_dec->p_owner;
1988     spu_DestroySubpicture( p_stream->p_sys->p_spu, p_subpic );
1989 }