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@netcourrier.com>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28 #include <stdlib.h>
  29 #include <string.h>
  30
  31 #include <vlc/vlc.h>
  32 #include <vlc/input.h>
  33 #include <vlc/sout.h>
  34 #include <vlc/vout.h>
  35 #include <vlc/decoder.h>
  36
  37 /* ffmpeg header */
  38 #ifdef HAVE_FFMPEG_AVCODEC_H
  39 #   include <ffmpeg/avcodec.h>
  40 #else
  41 #   include <avcodec.h>
  42 #endif
  43
  44 #if LIBAVCODEC_BUILD < 4704
  45 #   define AV_NOPTS_VALUE 0
  46 #endif
  47
  48 /*****************************************************************************
  49  * Module descriptor
  50  *****************************************************************************/
  51 static int  Open ( vlc_object_t * );
  52 static void Close( vlc_object_t * );
  53
  54 vlc_module_begin();
  55     set_description( _("Transcode stream output") );
  56     set_capability( "sout stream", 50 );
  57     add_shortcut( "transcode" );
  58     set_callbacks( Open, Close );
  59 vlc_module_end();
  60
  61
  62 /*****************************************************************************
  63  * Exported prototypes
  64  *****************************************************************************/
  65 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
  66 static int               Del ( sout_stream_t *, sout_stream_id_t * );
  67 static int               Send( sout_stream_t *, sout_stream_id_t *, block_t* );
  68
  69 static int  transcode_audio_ffmpeg_new    ( sout_stream_t *, sout_stream_id_t * );
  70 static void transcode_audio_ffmpeg_close  ( sout_stream_t *, sout_stream_id_t * );
  71 static int  transcode_audio_ffmpeg_process( sout_stream_t *, sout_stream_id_t *, block_t *, block_t ** );
  72
  73 static int  transcode_video_ffmpeg_new    ( sout_stream_t *, sout_stream_id_t * );
  74 static void transcode_video_ffmpeg_close  ( sout_stream_t *, sout_stream_id_t * );
  75 static int  transcode_video_ffmpeg_process( sout_stream_t *, sout_stream_id_t *, block_t *, block_t ** );
  76
  77 static int  transcode_video_ffmpeg_getframebuf( struct AVCodecContext *, AVFrame *);
  78
  79 static int  EncoderThread( struct sout_stream_sys_t * p_sys );
  80
  81 static int pi_channels_maps[6] =
  82 {
  83     0,
  84     AOUT_CHAN_CENTER,   AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
  85     AOUT_CHAN_CENTER | AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
  86     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARLEFT
  87      | AOUT_CHAN_REARRIGHT,
  88     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
  89      | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
  90 };
  91
  92 #define PICTURE_RING_SIZE 64
  93
  94 struct sout_stream_sys_t
  95 {
  96     VLC_COMMON_MEMBERS
  97
  98     sout_stream_t * p_out;
  99     sout_stream_id_t * id_video;
 100     block_t * p_buffers;
 101     vlc_mutex_t     lock_out;
 102     vlc_cond_t      cond;
 103     picture_t *     pp_pics[PICTURE_RING_SIZE];
 104     int             i_first_pic, i_last_pic;
 105
 106     vlc_fourcc_t    i_acodec;   /* codec audio (0 if not transcode) */
 107     int             i_sample_rate;
 108     int             i_channels;
 109     int             i_abitrate;
 110
 111     vlc_fourcc_t    i_vcodec;   /*    "   video  " "   "      " */
 112     int             i_vbitrate;
 113     int             i_vtolerance;
 114     double          f_scale;
 115     int             i_width;
 116     int             i_height;
 117     int             i_b_frames;
 118     int             i_key_int;
 119     int             i_qmin;
 120     int             i_qmax;
 121     vlc_bool_t      i_hq;
 122     vlc_bool_t      b_deinterlace;
 123     vlc_bool_t      b_interlace;
 124     vlc_bool_t      b_strict_rc;
 125     vlc_bool_t      b_pre_me;
 126     vlc_bool_t      b_hurry_up;
 127     int             i_rc_buffer_size;
 128     float           f_rc_buffer_aggressivity;
 129     float           f_i_quant_factor;
 130     int             i_noise_reduction;
 131     vlc_bool_t      b_mpeg4_matrix;
 132     int             i_threads;
 133     vlc_bool_t      b_trellis;
 134
 135     int             i_crop_top;
 136     int             i_crop_bottom;
 137     int             i_crop_right;
 138     int             i_crop_left;
 139
 140     mtime_t         i_input_dts;
 141     mtime_t         i_input_pts;
 142     vlc_bool_t      b_input_has_b_frames;
 143
 144     mtime_t         i_output_pts;
 145 };
 146
 147 /*****************************************************************************
 148  * Open:
 149  *****************************************************************************/
 150 static int Open( vlc_object_t *p_this )
 151 {
 152     sout_stream_t     *p_stream = (sout_stream_t*)p_this;
 153     sout_stream_sys_t *p_sys;
 154     char *codec;
 155
 156     p_sys = vlc_object_create( p_this, sizeof( sout_stream_sys_t ) );
 157     p_sys->p_out = sout_stream_new( p_stream->p_sout, p_stream->psz_next );
 158
 159     p_sys->f_scale      = 1;
 160     p_sys->i_vtolerance = -1;
 161     p_sys->i_key_int    = -1;
 162     p_sys->i_qmin       = 2;
 163     p_sys->i_qmax       = 31;
 164     p_sys->f_i_quant_factor = 0.0;
 165 #if LIBAVCODEC_BUILD >= 4673
 166     p_sys->i_hq         = FF_MB_DECISION_SIMPLE;
 167 #else
 168     p_sys->i_hq         = VLC_FALSE;
 169 #endif
 170     p_sys->i_rc_buffer_size = 224*1024*8 * 3/2;
 171     p_sys->f_rc_buffer_aggressivity = 0.1;
 172     p_sys->i_threads = 0;
 173     p_sys->b_trellis = 0;
 174     p_sys->b_input_has_b_frames = VLC_FALSE;
 175     p_sys->i_output_pts = 0;
 176
 177     if( ( codec = sout_cfg_find_value( p_stream->p_cfg, "acodec" ) ) )
 178     {
 179         char fcc[4] = "    ";
 180         char *val;
 181
 182         memcpy( fcc, codec, __MIN( strlen( codec ), 4 ) );
 183
 184         p_sys->i_acodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
 185
 186         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "samplerate" ) ) )
 187         {
 188             p_sys->i_sample_rate = atoi( val );
 189         }
 190         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "channels" ) ) )
 191         {
 192             p_sys->i_channels = atoi( val );
 193         }
 194         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "ab" ) ) )
 195         {
 196             p_sys->i_abitrate = atoi( val );
 197             if( p_sys->i_abitrate < 4000 )
 198             {
 199                 p_sys->i_abitrate *= 1000;
 200             }
 201         }
 202
 203         msg_Dbg( p_stream, "codec audio=%4.4s %dHz %d channels %dKb/s", fcc,
 204                  p_sys->i_sample_rate, p_sys->i_channels,
 205                  p_sys->i_abitrate / 1000 );
 206     }
 207
 208     if( ( codec = sout_cfg_find_value( p_stream->p_cfg, "vcodec" ) ) )
 209     {
 210         char fcc[4] = "    ";
 211         char *val;
 212
 213         memcpy( fcc, codec, __MIN( strlen( codec ), 4 ) );
 214
 215         p_sys->i_vcodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
 216
 217         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "scale" ) ) )
 218         {
 219             p_sys->f_scale = atof( val );
 220         }
 221         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "width" ) ) )
 222         {
 223             p_sys->i_width = atoi( val );
 224         }
 225         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "height" ) ) )
 226         {
 227             p_sys->i_height = atoi( val );
 228         }
 229         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "vb" ) ) )
 230         {
 231             p_sys->i_vbitrate = atoi( val );
 232             if( p_sys->i_vbitrate < 16000 )
 233             {
 234                 p_sys->i_vbitrate *= 1000;
 235             }
 236         }
 237         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "vt" ) ) )
 238         {
 239             p_sys->i_vtolerance = atoi( val );
 240         }
 241         if( sout_cfg_find( p_stream->p_cfg, "deinterlace" ) )
 242         {
 243             p_sys->b_deinterlace = VLC_TRUE;
 244         }
 245         if( sout_cfg_find( p_stream->p_cfg, "interlace" ) )
 246         {
 247             p_sys->b_interlace = VLC_TRUE;
 248         }
 249         if( sout_cfg_find( p_stream->p_cfg, "strict_rc" ) )
 250         {
 251             p_sys->b_strict_rc = VLC_TRUE;
 252         }
 253         if( sout_cfg_find( p_stream->p_cfg, "pre_me" ) )
 254         {
 255             p_sys->b_pre_me = VLC_TRUE;
 256         }
 257         if( sout_cfg_find( p_stream->p_cfg, "hurry_up" ) )
 258         {
 259             p_sys->b_hurry_up = VLC_TRUE;
 260             /* hurry up mode needs noise reduction, even small */
 261             p_sys->i_noise_reduction = 1;
 262         }
 263         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "rc_buffer_size" ) ) )
 264         {
 265             p_sys->i_rc_buffer_size = atoi( val );
 266         }
 267         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "rc_buffer_aggressivity" ) ) )
 268         {
 269             p_sys->f_rc_buffer_aggressivity = atof( val );
 270         }
 271         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "i_quant_factor" ) ) )
 272         {
 273             p_sys->f_i_quant_factor = atof( val );
 274         }
 275         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "noise_reduction" ) ) )
 276         {
 277             p_sys->i_noise_reduction = atoi( val );
 278         }
 279         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "mpeg4_matrix" ) ) )
 280         {
 281             p_sys->b_mpeg4_matrix = VLC_TRUE;
 282         }
 283         /* crop */
 284         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "croptop" ) ) )
 285         {
 286             p_sys->i_crop_top = atoi( val );
 287         }
 288         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "cropbottom" ) ) )
 289         {
 290             p_sys->i_crop_bottom = atoi( val );
 291         }
 292         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "cropleft" ) ) )
 293         {
 294             p_sys->i_crop_left = atoi( val );
 295         }
 296         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "cropright" ) ) )
 297         {
 298             p_sys->i_crop_right = atoi( val );
 299         }
 300         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "keyint" ) ) )
 301         {
 302             p_sys->i_key_int    = atoi( val );
 303         }
 304         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "bframes" ) ) )
 305         {
 306             p_sys->i_b_frames   = atoi( val );
 307         }
 308 #if LIBAVCODEC_BUILD >= 4673
 309         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "hq" ) ) )
 310         {
 311             if( !strcmp( val, "rd" ) )
 312             {
 313                 p_sys->i_hq = FF_MB_DECISION_RD;
 314             }
 315             else if( !strcmp( val, "bits" ) )
 316             {
 317                 p_sys->i_hq = FF_MB_DECISION_BITS;
 318             }
 319             else if( !strcmp( val, "simple" ) )
 320             {
 321                 p_sys->i_hq = FF_MB_DECISION_SIMPLE;
 322             }
 323             else
 324             {
 325                 p_sys->i_hq = FF_MB_DECISION_RD;
 326             }
 327         }
 328 #else
 329         if( sout_cfg_find( p_stream->p_cfg, "hq" ) )
 330         {
 331             p_sys->i_hq = VLC_TRUE;
 332         }
 333 #endif
 334         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "qmin" ) ) )
 335         {
 336             p_sys->i_qmin   = atoi( val );
 337         }
 338         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "qmax" ) ) )
 339         {
 340             p_sys->i_qmax   = atoi( val );
 341         }
 342         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "threads" ) ) )
 343         {
 344             p_sys->i_threads = atoi( val );
 345         }
 346         if( sout_cfg_find( p_stream->p_cfg, "trellis" ) )
 347         {
 348             p_sys->b_trellis = VLC_TRUE;
 349         }
 350
 351         msg_Dbg( p_stream, "codec video=%4.4s %dx%d scaling: %f %dkb/s",
 352                  fcc, p_sys->i_width, p_sys->i_height, p_sys->f_scale,
 353                  p_sys->i_vbitrate / 1000 );
 354     }
 355
 356     if( !p_sys->p_out )
 357     {
 358         msg_Err( p_stream, "cannot create chain" );
 359         free( p_sys );
 360         return VLC_EGENERIC;
 361     }
 362
 363     p_stream->pf_add    = Add;
 364     p_stream->pf_del    = Del;
 365     p_stream->pf_send   = Send;
 366     p_stream->p_sys     = p_sys;
 367
 368     avcodec_init();
 369     avcodec_register_all();
 370
 371     return VLC_SUCCESS;
 372 }
 373
 374 /*****************************************************************************
 375  * Close:
 376  *****************************************************************************/
 377 static void Close( vlc_object_t * p_this )
 378 {
 379     sout_stream_t       *p_stream = (sout_stream_t*)p_this;
 380     sout_stream_sys_t   *p_sys = p_stream->p_sys;
 381
 382     sout_stream_delete( p_sys->p_out );
 383     vlc_object_destroy( p_sys );
 384 }
 385
 386 struct sout_stream_id_t
 387 {
 388     vlc_fourcc_t  b_transcode;
 389     es_format_t f_src;        /* only if transcoding */
 390     es_format_t f_dst;        /*  "   "      " */
 391     unsigned int  i_inter_pixfmt; /* intermediary format when transcoding */
 392
 393     /* id of the out stream */
 394     void *id;
 395
 396     /* Encoder */
 397     encoder_t       *p_encoder;
 398     vlc_fourcc_t    b_enc_inited;
 399
 400     /* ffmpeg part */
 401     AVCodec         *ff_dec;
 402     AVCodecContext  *ff_dec_c;
 403
 404     mtime_t         i_dts;
 405     mtime_t         i_length;
 406
 407     int             i_buffer;
 408     int             i_buffer_pos;
 409     uint8_t         *p_buffer;
 410
 411     AVFrame         *p_ff_pic;
 412     AVFrame         *p_ff_pic_tmp0; /* to do deinterlace */
 413     AVFrame         *p_ff_pic_tmp1; /* to do pix conversion */
 414     AVFrame         *p_ff_pic_tmp2; /* to do resample */
 415
 416     ImgReSampleContext *p_vresample;
 417 };
 418
 419
 420 static sout_stream_id_t * Add( sout_stream_t *p_stream, es_format_t *p_fmt )
 421 {
 422     sout_stream_sys_t   *p_sys = p_stream->p_sys;
 423     sout_stream_id_t    *id;
 424
 425     id = malloc( sizeof( sout_stream_id_t ) );
 426     id->i_dts = 0;
 427     id->id = NULL;
 428     id->p_encoder = NULL;
 429
 430     if( p_fmt->i_cat == AUDIO_ES && p_sys->i_acodec != 0 )
 431     {
 432         msg_Dbg( p_stream,
 433                  "creating audio transcoding from fcc=`%4.4s' to fcc=`%4.4s'",
 434                  (char*)&p_fmt->i_codec,
 435                  (char*)&p_sys->i_acodec );
 436
 437         /* src format */
 438         memcpy( &id->f_src, p_fmt, sizeof( es_format_t ) );
 439
 440         /* create dst format */
 441         es_format_Init( &id->f_dst, AUDIO_ES, p_sys->i_acodec );
 442         id->f_dst.i_id    = id->f_src.i_id;
 443         id->f_dst.i_group = id->f_src.i_group;
 444         if( id->f_src.psz_language ) id->f_dst.psz_language = strdup( id->f_src.psz_language );
 445         id->f_dst.audio.i_rate = p_sys->i_sample_rate  > 0 ? p_sys->i_sample_rate : id->f_src.audio.i_rate;
 446         id->f_dst.audio.i_channels    = p_sys->i_channels > 0 ? p_sys->i_channels : id->f_src.audio.i_channels;
 447         id->f_dst.i_bitrate     = p_sys->i_abitrate > 0 ? p_sys->i_abitrate : 64000;
 448         id->f_dst.audio.i_blockalign = 0;
 449         id->f_dst.i_extra  = 0;
 450         id->f_dst.p_extra  = NULL;
 451
 452         /* build decoder -> filter -> encoder */
 453         if( transcode_audio_ffmpeg_new( p_stream, id ) )
 454         {
 455             msg_Err( p_stream, "cannot create audio chain" );
 456             free( id );
 457             return NULL;
 458         }
 459
 460         /* open output stream */
 461         id->id = p_sys->p_out->pf_add( p_sys->p_out, &id->f_dst );
 462         id->b_transcode = VLC_TRUE;
 463
 464         if( id->id == NULL )
 465         {
 466             free( id );
 467             return NULL;
 468         }
 469     }
 470     else if( p_fmt->i_cat == VIDEO_ES && p_sys->i_vcodec != 0 )
 471     {
 472         msg_Dbg( p_stream,
 473                  "creating video transcoding from fcc=`%4.4s' to fcc=`%4.4s'",
 474                  (char*)&p_fmt->i_codec,
 475                  (char*)&p_sys->i_vcodec );
 476
 477         memcpy( &id->f_src, p_fmt, sizeof( es_format_t ) );
 478
 479         /* create dst format */
 480         es_format_Init( &id->f_dst, VIDEO_ES, p_sys->i_vcodec );
 481         id->f_dst.i_id    = id->f_src.i_id;
 482         id->f_dst.i_group = id->f_src.i_group;
 483         if( id->f_src.psz_language ) id->f_dst.psz_language = strdup( id->f_src.psz_language );
 484         id->f_dst.video.i_width = p_sys->i_width;
 485         id->f_dst.video.i_height= p_sys->i_height;
 486         id->f_dst.i_bitrate     = p_sys->i_vbitrate > 0 ? p_sys->i_vbitrate : 800*1000;
 487         id->f_dst.i_extra       = 0;
 488         id->f_dst.p_extra       = NULL;
 489
 490         /* build decoder -> filter -> encoder */
 491         if( transcode_video_ffmpeg_new( p_stream, id ) )
 492         {
 493             msg_Err( p_stream, "cannot create video chain" );
 494             free( id );
 495             return NULL;
 496         }
 497 #if 0
 498         /* open output stream */
 499         id->id = p_sys->p_out->pf_add( p_sys->p_out, &id->f_dst );
 500 #endif
 501         id->b_transcode = VLC_TRUE;
 502     }
 503     else
 504     {
 505         msg_Dbg( p_stream, "not transcoding a stream (fcc=`%4.4s')", (char*)&p_fmt->i_codec );
 506         id->id = p_sys->p_out->pf_add( p_sys->p_out, p_fmt );
 507         id->b_transcode = VLC_FALSE;
 508
 509         if( id->id == NULL )
 510         {
 511             free( id );
 512             return NULL;
 513         }
 514     }
 515
 516     return id;
 517 }
 518
 519 static int     Del      ( sout_stream_t *p_stream, sout_stream_id_t *id )
 520 {
 521     sout_stream_sys_t   *p_sys = p_stream->p_sys;
 522
 523     if( id->b_transcode )
 524     {
 525         if( id->f_src.i_cat == AUDIO_ES )
 526         {
 527             transcode_audio_ffmpeg_close( p_stream, id );
 528         }
 529         else if( id->f_src.i_cat == VIDEO_ES )
 530         {
 531             transcode_video_ffmpeg_close( p_stream, id );
 532         }
 533     }
 534
 535     if( id->id ) p_sys->p_out->pf_del( p_sys->p_out, id->id );
 536     free( id );
 537
 538     return VLC_SUCCESS;
 539 }
 540
 541 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
 542                  block_t *p_buffer )
 543 {
 544     sout_stream_sys_t   *p_sys = p_stream->p_sys;
 545
 546     if( id->b_transcode )
 547     {
 548         block_t *p_buffer_out;
 549
 550         /* Be sure to have padding */
 551         p_buffer = block_Realloc( p_buffer, 0, p_buffer->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
 552         if( p_buffer == NULL )
 553         {
 554             return VLC_EGENERIC;
 555         }
 556         p_buffer->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
 557         memset( &p_buffer->p_buffer[p_buffer->i_buffer], 0, FF_INPUT_BUFFER_PADDING_SIZE );
 558
 559         if( id->f_src.i_cat == AUDIO_ES )
 560         {
 561             transcode_audio_ffmpeg_process( p_stream, id, p_buffer,
 562                                             &p_buffer_out );
 563         }
 564         else if( id->f_src.i_cat == VIDEO_ES )
 565         {
 566             if( transcode_video_ffmpeg_process( p_stream, id, p_buffer,
 567                 &p_buffer_out ) != VLC_SUCCESS )
 568             {
 569                 block_Release( p_buffer );
 570                 return VLC_EGENERIC;
 571             }
 572         }
 573         block_Release( p_buffer );
 574
 575         if( p_buffer_out )
 576         {
 577             return p_sys->p_out->pf_send( p_sys->p_out, id->id, p_buffer_out );
 578         }
 579         return VLC_SUCCESS;
 580     }
 581     else if( id->id != NULL )
 582     {
 583         return p_sys->p_out->pf_send( p_sys->p_out, id->id, p_buffer );
 584     }
 585     else
 586     {
 587         block_Release( p_buffer );
 588         return VLC_EGENERIC;
 589     }
 590 }
 591
 592 /****************************************************************************
 593  * ffmpeg decoder reencocdr part
 594  ****************************************************************************/
 595
 596 static struct
 597 {
 598     vlc_fourcc_t i_fcc;
 599     int          i_ff_codec;
 600 } fourcc_to_ff_code[] =
 601 {
 602     /* audio */
 603     { VLC_FOURCC( 'm', 'p', 'g', 'a' ), CODEC_ID_MP2 },
 604     { VLC_FOURCC( 'm', 'p', '3', ' ' ), CODEC_ID_MP3LAME },
 605     { VLC_FOURCC( 'm', 'p', '4', 'a' ), CODEC_ID_AAC },
 606     { VLC_FOURCC( 'a', '5', '2', ' ' ), CODEC_ID_AC3 },
 607     { VLC_FOURCC( 'a', 'c', '3', ' ' ), CODEC_ID_AC3 },
 608     { VLC_FOURCC( 'w', 'm', 'a', '1' ), CODEC_ID_WMAV1 },
 609     { VLC_FOURCC( 'w', 'm', 'a', '2' ), CODEC_ID_WMAV2 },
 610     { VLC_FOURCC( 'v', 'o', 'r', 'b' ), CODEC_ID_VORBIS },
 611     { VLC_FOURCC( 'a', 'l', 'a', 'w' ), CODEC_ID_PCM_ALAW },
 612
 613     /* video */
 614     { VLC_FOURCC( 'm', 'p', 'g', 'v' ), CODEC_ID_MPEG1VIDEO },
 615     { VLC_FOURCC( 'm', 'p', '1', 'v' ), CODEC_ID_MPEG1VIDEO },
 616 #if LIBAVCODEC_BUILD >= 4676
 617     { VLC_FOURCC( 'm', 'p', '2', 'v' ), CODEC_ID_MPEG2VIDEO },
 618 #endif
 619     { VLC_FOURCC( 'm', 'p', '4', 'v'),  CODEC_ID_MPEG4 },
 620     { VLC_FOURCC( 'D', 'I', 'V', '1' ), CODEC_ID_MSMPEG4V1 },
 621     { VLC_FOURCC( 'D', 'I', 'V', '2' ), CODEC_ID_MSMPEG4V2 },
 622     { VLC_FOURCC( 'D', 'I', 'V', '3' ), CODEC_ID_MSMPEG4V3 },
 623     { VLC_FOURCC( 'H', '2', '6', '3' ), CODEC_ID_H263 },
 624     { VLC_FOURCC( 'I', '2', '6', '3' ), CODEC_ID_H263I },
 625     { VLC_FOURCC( 'h', 'u', 'f', 'f' ), CODEC_ID_HUFFYUV },
 626     { VLC_FOURCC( 'W', 'M', 'V', '1' ), CODEC_ID_WMV1 },
 627     { VLC_FOURCC( 'W', 'M', 'V', '2' ), CODEC_ID_WMV2 },
 628     { VLC_FOURCC( 'M', 'J', 'P', 'G' ), CODEC_ID_MJPEG },
 629     { VLC_FOURCC( 'm', 'j', 'p', 'b' ), CODEC_ID_MJPEGB },
 630     { VLC_FOURCC( 'd', 'v', 's', 'l' ), CODEC_ID_DVVIDEO },
 631     { VLC_FOURCC( 'S', 'V', 'Q', '1' ), CODEC_ID_SVQ1 },
 632 #if LIBAVCODEC_BUILD >= 4666
 633     { VLC_FOURCC( 'S', 'V', 'Q', '3' ), CODEC_ID_SVQ3 },
 634 #endif
 635
 636     /* raw video code, only used for 'encoding' */
 637     { VLC_FOURCC( 'I', '4', '2', '0' ), CODEC_ID_RAWVIDEO },
 638     { VLC_FOURCC( 'I', '4', '2', '2' ), CODEC_ID_RAWVIDEO },
 639     { VLC_FOURCC( 'I', '4', '4', '4' ), CODEC_ID_RAWVIDEO },
 640     { VLC_FOURCC( 'R', 'V', '1', '5' ), CODEC_ID_RAWVIDEO },
 641     { VLC_FOURCC( 'R', 'V', '1', '6' ), CODEC_ID_RAWVIDEO },
 642     { VLC_FOURCC( 'R', 'V', '2', '4' ), CODEC_ID_RAWVIDEO },
 643     { VLC_FOURCC( 'R', 'V', '3', '2' ), CODEC_ID_RAWVIDEO },
 644     { VLC_FOURCC( 'Y', 'U', 'Y', '2' ), CODEC_ID_RAWVIDEO },
 645     { VLC_FOURCC( 'Y', 'V', '1', '2' ), CODEC_ID_RAWVIDEO },
 646     { VLC_FOURCC( 'I', 'Y', 'U', 'V' ), CODEC_ID_RAWVIDEO },
 647
 648     { VLC_FOURCC(   0,   0,   0,   0 ), 0 }
 649 };
 650
 651 static inline int get_ff_codec( vlc_fourcc_t i_fcc )
 652 {
 653     int i;
 654
 655     for( i = 0; fourcc_to_ff_code[i].i_fcc != 0; i++ )
 656     {
 657         if( fourcc_to_ff_code[i].i_fcc == i_fcc )
 658         {
 659             return fourcc_to_ff_code[i].i_ff_codec;
 660         }
 661     }
 662
 663     return 0;
 664 }
 665
 666 static inline int get_ff_chroma( vlc_fourcc_t i_chroma )
 667 {
 668     switch( i_chroma )
 669     {
 670         case VLC_FOURCC( 'Y', 'V', '1', '2' ):
 671         case VLC_FOURCC( 'I', 'Y', 'U', 'V' ):
 672         case VLC_FOURCC( 'I', '4', '2', '0' ):
 673             return PIX_FMT_YUV420P;
 674         case VLC_FOURCC( 'I', '4', '2', '2' ):
 675             return PIX_FMT_YUV422P;
 676         case VLC_FOURCC( 'I', '4', '4', '4' ):
 677             return PIX_FMT_YUV444P;
 678         case VLC_FOURCC( 'R', 'V', '1', '5' ):
 679             return PIX_FMT_RGB555;
 680         case VLC_FOURCC( 'R', 'V', '1', '6' ):
 681             return PIX_FMT_RGB565;
 682         case VLC_FOURCC( 'R', 'V', '2', '4' ):
 683             return PIX_FMT_BGR24;
 684         case VLC_FOURCC( 'R', 'V', '3', '2' ):
 685             return PIX_FMT_RGBA32;
 686         case VLC_FOURCC( 'G', 'R', 'E', 'Y' ):
 687             return PIX_FMT_GRAY8;
 688         case VLC_FOURCC( 'Y', 'U', 'Y', '2' ):
 689             return PIX_FMT_YUV422;
 690         default:
 691             return 0;
 692     }
 693 }
 694
 695 static inline vlc_fourcc_t get_vlc_chroma( int i_pix_fmt )
 696 {
 697     switch( i_pix_fmt )
 698     {
 699     case PIX_FMT_YUV420P:
 700         return VLC_FOURCC('I','4','2','0');
 701     case PIX_FMT_YUV422P:
 702         return VLC_FOURCC('I','4','2','2');
 703     case PIX_FMT_YUV444P:
 704         return VLC_FOURCC('I','4','4','4');
 705
 706     case PIX_FMT_YUV422:
 707         return VLC_FOURCC('Y','U','Y','2');
 708
 709     case PIX_FMT_RGB555:
 710         return VLC_FOURCC('R','V','1','5');
 711     case PIX_FMT_RGB565:
 712         return VLC_FOURCC('R','V','1','6');
 713     case PIX_FMT_RGB24:
 714         return VLC_FOURCC('R','V','2','4');
 715     case PIX_FMT_RGBA32:
 716         return VLC_FOURCC('R','V','3','2');
 717     case PIX_FMT_GRAY8:
 718         return VLC_FOURCC('G','R','E','Y');
 719
 720     case PIX_FMT_YUV410P:
 721     case PIX_FMT_YUV411P:
 722     case PIX_FMT_BGR24:
 723     default:
 724         return 0;
 725     }
 726 }
 727
 728 static int transcode_audio_ffmpeg_new( sout_stream_t *p_stream,
 729                                        sout_stream_id_t *id )
 730 {
 731     int i_ff_codec;
 732
 733     if( id->f_src.i_codec == VLC_FOURCC('s','1','6','l') ||
 734         id->f_src.i_codec == VLC_FOURCC('s','1','6','b') ||
 735         id->f_src.i_codec == VLC_FOURCC('s','8',' ',' ') ||
 736         id->f_src.i_codec == VLC_FOURCC('u','8',' ',' ') )
 737     {
 738         id->ff_dec = NULL;
 739
 740         id->ff_dec_c = avcodec_alloc_context();
 741         id->ff_dec_c->sample_rate = id->f_src.audio.i_rate;
 742         id->ff_dec_c->channels    = id->f_src.audio.i_channels;
 743         id->ff_dec_c->block_align = id->f_src.audio.i_blockalign;
 744         id->ff_dec_c->bit_rate    = id->f_src.i_bitrate;
 745     }
 746     else
 747     {
 748         /* find decoder */
 749         i_ff_codec = get_ff_codec( id->f_src.i_codec );
 750         if( i_ff_codec == 0 )
 751         {
 752             msg_Err( p_stream, "cannot find decoder id" );
 753             return VLC_EGENERIC;
 754         }
 755
 756         id->ff_dec = avcodec_find_decoder( i_ff_codec );
 757         if( !id->ff_dec )
 758         {
 759             msg_Err( p_stream, "cannot find decoder (avcodec)" );
 760             return VLC_EGENERIC;
 761         }
 762
 763         id->ff_dec_c = avcodec_alloc_context();
 764         id->ff_dec_c->sample_rate = id->f_src.audio.i_rate;
 765         id->ff_dec_c->channels    = id->f_src.audio.i_channels;
 766         id->ff_dec_c->block_align = id->f_src.audio.i_blockalign;
 767         id->ff_dec_c->bit_rate    = id->f_src.i_bitrate;
 768
 769         id->ff_dec_c->extradata_size = id->f_src.i_extra;
 770         id->ff_dec_c->extradata      = id->f_src.p_extra;
 771         if( avcodec_open( id->ff_dec_c, id->ff_dec ) )
 772         {
 773             msg_Err( p_stream, "cannot open decoder" );
 774             return VLC_EGENERIC;
 775         }
 776     }
 777
 778     id->i_buffer     = 2 * AVCODEC_MAX_AUDIO_FRAME_SIZE;
 779     id->i_buffer_pos = 0;
 780     id->p_buffer     = malloc( id->i_buffer );
 781
 782     /* Sanity check for audio channels */
 783     id->f_dst.audio.i_channels = __MIN( id->f_dst.audio.i_channels, id->f_src.audio.i_channels );
 784
 785     /* find encoder */
 786     id->p_encoder = vlc_object_create( p_stream, VLC_OBJECT_ENCODER );
 787
 788     /* Initialization of encoder format structures */
 789     es_format_Init( &id->p_encoder->fmt_in, AUDIO_ES, AOUT_FMT_S16_NE );
 790     id->p_encoder->fmt_in.audio.i_format = AOUT_FMT_S16_NE;
 791     id->p_encoder->fmt_in.audio.i_rate = id->f_dst.audio.i_rate;
 792     id->p_encoder->fmt_in.audio.i_physical_channels =
 793         id->p_encoder->fmt_in.audio.i_original_channels =
 794             pi_channels_maps[id->f_dst.audio.i_channels];
 795     id->p_encoder->fmt_in.audio.i_channels = id->f_dst.audio.i_channels;
 796
 797     id->p_encoder->fmt_out = id->p_encoder->fmt_in;
 798     id->p_encoder->fmt_out.i_codec = id->f_dst.i_codec;
 799     id->p_encoder->fmt_out.i_bitrate = id->f_dst.i_bitrate;
 800
 801     id->p_encoder->p_module =
 802         module_Need( id->p_encoder, "encoder", NULL, 0 );
 803     if( !id->p_encoder->p_module )
 804     {
 805         vlc_object_destroy( id->p_encoder );
 806         msg_Err( p_stream, "cannot open encoder" );
 807         return VLC_EGENERIC;
 808     }
 809
 810     id->b_enc_inited = VLC_FALSE;
 811
 812     id->f_dst.audio.i_channels = id->p_encoder->fmt_in.audio.i_channels;
 813     id->f_dst.audio.i_rate     = id->p_encoder->fmt_in.audio.i_rate;
 814     id->f_dst.i_extra = id->p_encoder->fmt_out.i_extra;
 815     id->f_dst.p_extra = id->p_encoder->fmt_out.p_extra;
 816
 817     /* Hack for mp3 transcoding support */
 818     if( id->f_dst.i_codec == VLC_FOURCC( 'm','p','3',' ' ) )
 819     {
 820         id->f_dst.i_codec = VLC_FOURCC( 'm','p','g','a' );
 821     }
 822
 823     return VLC_SUCCESS;
 824 }
 825
 826 static void transcode_audio_ffmpeg_close( sout_stream_t *p_stream,
 827                                           sout_stream_id_t *id )
 828 {
 829     if( id->ff_dec )
 830     {
 831         avcodec_close( id->ff_dec_c );
 832         free( id->ff_dec_c );
 833     }
 834
 835     module_Unneed( id->p_encoder, id->p_encoder->p_module );
 836     vlc_object_destroy( id->p_encoder );
 837
 838     free( id->p_buffer );
 839 }
 840
 841 static int transcode_audio_ffmpeg_process( sout_stream_t *p_stream,
 842                                            sout_stream_id_t *id,
 843                                            block_t *in,
 844                                            block_t **out )
 845 {
 846     aout_buffer_t aout_buf;
 847     block_t *p_block;
 848     int i_buffer = in->i_buffer;
 849     char *p_buffer = in->p_buffer;
 850     id->i_dts = in->i_dts;
 851     *out = NULL;
 852
 853     while( i_buffer )
 854     {
 855         id->i_buffer_pos = 0;
 856
 857         /* decode as much data as possible */
 858         if( id->ff_dec )
 859         {
 860             int i_used;
 861
 862             i_used = avcodec_decode_audio( id->ff_dec_c,
 863                          (int16_t*)id->p_buffer, &id->i_buffer_pos,
 864                          p_buffer, i_buffer );
 865
 866 #if 0
 867             msg_Warn( p_stream, "avcodec_decode_audio: %d used on %d",
 868                       i_used, i_buffer );
 869 #endif
 870             if( i_used < 0 )
 871             {
 872                 msg_Warn( p_stream, "error audio decoding");
 873                 break;
 874             }
 875
 876             i_buffer -= i_used;
 877             p_buffer += i_used;
 878
 879             if ( id->i_buffer_pos < 0 )
 880             {
 881                 msg_Warn( p_stream, "weird error audio decoding");
 882                 break;
 883             }
 884         }
 885         else
 886         {
 887             int16_t *sout = (int16_t*)id->p_buffer;
 888
 889             if( id->f_src.i_codec == VLC_FOURCC( 's', '8', ' ', ' ' ) ||
 890                 id->f_src.i_codec == VLC_FOURCC( 'u', '8', ' ', ' ' ) )
 891             {
 892                 int8_t *sin = (int8_t*)p_buffer;
 893                 int i_used = __MIN( id->i_buffer/2, i_buffer );
 894                 int i_samples = i_used;
 895
 896                 if( id->f_src.i_codec == VLC_FOURCC( 's', '8', ' ', ' ' ) )
 897                     while( i_samples > 0 )
 898                     {
 899                         *sout++ = ( *sin++ ) << 8;
 900                         i_samples--;
 901                     }
 902                 else
 903                     while( i_samples > 0 )
 904                     {
 905                         *sout++ = ( *sin++ - 128 ) << 8;
 906                         i_samples--;
 907                     }
 908
 909                 i_buffer -= i_used;
 910                 p_buffer += i_used;
 911                 id->i_buffer_pos = i_used * 2;
 912             }
 913             else if( id->f_src.i_codec == VLC_FOURCC( 's', '1', '6', 'l' ) ||
 914                      id->f_src.i_codec == VLC_FOURCC( 's', '1', '6', 'b' ) )
 915             {
 916                 int16_t *sin = (int16_t*)p_buffer;
 917                 int i_used = __MIN( id->i_buffer, i_buffer );
 918                 int i_samples = i_used / 2;
 919
 920                 /* first copy */
 921                 memcpy( sout, sin, i_used );
 922
 923 #ifdef WORDS_BIGENDIAN
 924                 if( id->f_src.i_codec == VLC_FOURCC( 's', '1', '6', 'l' ) )
 925 #else
 926                 if( id->f_src.i_codec == VLC_FOURCC( 's', '1', '6', 'b' ) )
 927 #endif
 928                 {
 929                     uint8_t *dat = (uint8_t*)sout;
 930
 931                     while( i_samples > 0 )
 932                     {
 933                         uint8_t tmp;
 934                         tmp    = dat[0];
 935                         dat[0] = dat[1];
 936                         dat[1] = tmp;
 937
 938                         dat += 2;
 939
 940                         i_samples--;
 941                     }
 942                 }
 943
 944                 i_buffer -= i_used;
 945                 p_buffer += i_used;
 946                 id->i_buffer_pos = i_used;
 947             }
 948         }
 949
 950         if( id->i_buffer_pos == 0 ) continue;
 951
 952         /* Encode as much data as possible */
 953         if( !id->b_enc_inited && id->p_encoder->pf_header )
 954         {
 955             p_block = id->p_encoder->pf_header( id->p_encoder );
 956             while( p_block )
 957             {
 958                 block_t *p_out;
 959                 block_t *p_prev_block = p_block;
 960
 961                 p_out = block_New( p_stream, p_block->i_buffer );
 962                 memcpy( p_out->p_buffer, p_block->p_buffer, p_block->i_buffer);
 963                 p_out->i_dts = p_out->i_pts = in->i_dts;
 964                 p_out->i_length = 0;
 965                 block_ChainAppend( out, p_out );
 966
 967                 p_block = p_block->p_next;
 968                 block_Release( p_prev_block );
 969             }
 970
 971             id->b_enc_inited = VLC_TRUE;
 972         }
 973
 974         aout_buf.p_buffer = id->p_buffer;
 975         aout_buf.i_nb_bytes = id->i_buffer_pos;
 976         aout_buf.i_nb_samples = id->i_buffer_pos / 2 / id->f_src.audio.i_channels;
 977         aout_buf.start_date = id->i_dts;
 978         aout_buf.end_date = id->i_dts;
 979
 980         id->i_dts += ( I64C(1000000) * id->i_buffer_pos / 2 /
 981             id->f_src.audio.i_channels / id->f_src.audio.i_rate );
 982
 983         if( id->p_encoder->fmt_in.audio.i_channels == 1 &&
 984             id->f_src.audio.i_channels > 1 )
 985         {
 986             int16_t *p_sample = (int16_t *)aout_buf.p_buffer;
 987             int i_src_c = id->f_src.audio.i_channels;
 988             unsigned int i;
 989
 990             for( i = 0; i < aout_buf.i_nb_samples; i++ )
 991             {
 992                 int j, c = 0;
 993
 994                 for( j = 1; j < i_src_c; j++ )
 995                 {
 996                     c += p_sample[i_src_c * i + j];
 997                 }
 998                 p_sample[i] = c / (i_src_c-1);
 999             }
1000             aout_buf.i_nb_bytes = i * 2;
1001         }
1002         else if( id->p_encoder->fmt_in.audio.i_channels == 2 &&
1003                  id->f_src.audio.i_channels > 2 )
1004         {
1005             int i_src_c = id->f_src.audio.i_channels;
1006             unsigned int i;
1007
1008             static const float mixf_l[4][6] = /* [i_src_c - 3][channel index] */
1009             {
1010                 { 0.00, 1.00, 0.00, 0.00, 0.00, 0.00 }, /* 3 channels */
1011                 { 0.00, 0.50, 0.50, 0.00, 0.00, 0.00 }, /* 4 channels */
1012                 { 0.00, 0.50, 0.00, 0.50, 0.00, 0.00 }, /* 5 channels */
1013                 { 0.00, 0.34, 0.33, 0.00, 0.33, 0.00 }, /* 6 channels */
1014             };
1015             static const float mixf_r[4][6] = /* [i_src_c - 3][channel index] */
1016             {
1017                 { 0.00, 1.00, 0.00, 0.00, 0.00, 0.00 }, /* 3 channels */
1018                 { 0.00, 0.00, 0.50, 0.50, 0.00, 0.00 }, /* 4 channels */
1019                 { 0.00, 0.00, 0.50, 0.00, 0.50, 0.00 }, /* 5 channels */
1020                 { 0.00, 0.00, 0.33, 0.34, 0.00, 0.33 }, /* 6 channels */
1021             };
1022
1023
1024             for( i = 0; i < aout_buf.i_nb_samples; i++ )
1025             {
1026                 int16_t *p_src = (int16_t *)aout_buf.p_buffer + i_src_c * i;
1027                 int16_t *p_dst = (int16_t *)aout_buf.p_buffer + 2 * i;
1028
1029                 int j;
1030                 float l = 0.0, r = 0.0;
1031                 for( j = 0; j < i_src_c; j++ )
1032                 {
1033                     l += mixf_l[i_src_c-3][j] * p_src[j];
1034                     r += mixf_r[i_src_c-3][j] * p_src[j];
1035                 }
1036
1037                 p_dst[0] = (int)( l + 0.5 );
1038                 p_dst[1] = (int)( r + 0.5 );
1039             }
1040             aout_buf.i_nb_bytes = i * 2 * 2;
1041         }
1042         else if( id->f_src.audio.i_channels !=
1043                  id->p_encoder->fmt_in.audio.i_channels )
1044         {
1045             unsigned int i;
1046             int j;
1047
1048             /* This is for liba52 which is what ffmpeg uses to decode ac3 */
1049             static const int translation[7][6] =
1050             {{ 0, 0, 0, 0, 0, 0 },      /* 0 channels (rarely used) */
1051              { 0, 0, 0, 0, 0, 0 },       /* 1 ch */
1052              { 0, 1, 0, 0, 0, 0 },       /* 2 */
1053              { 1, 2, 0, 0, 0, 0 },       /* 3 */
1054              { 1, 3, 2, 0, 0, 0 },       /* 4 */
1055              { 1, 3, 4, 2, 0, 0 },       /* 5 */
1056              { 1, 3, 4, 5, 2, 0 }};      /* 6 */
1057
1058             /* dumb downmixing */
1059             for( i = 0; i < aout_buf.i_nb_samples; i++ )
1060             {
1061                 uint16_t *p_buffer = (uint16_t *)aout_buf.p_buffer;
1062                 for( j = 0 ; j < id->p_encoder->fmt_in.audio.i_channels; j++ )
1063                 {
1064                     p_buffer[i*id->p_encoder->fmt_in.audio.i_channels+j] =
1065                         p_buffer[i*id->f_src.audio.i_channels+
1066                                  translation[id->f_src.audio.i_channels][j]];
1067                 }
1068             }
1069             aout_buf.i_nb_bytes = i*id->p_encoder->fmt_in.audio.i_channels * 2;
1070         }
1071
1072         p_block = id->p_encoder->pf_encode_audio( id->p_encoder, &aout_buf );
1073         while( p_block )
1074         {
1075             block_t *p_out;
1076             block_t *p_prev_block = p_block;
1077
1078             p_out = block_New( p_stream, p_block->i_buffer );
1079             memcpy( p_out->p_buffer, p_block->p_buffer, p_block->i_buffer);
1080             p_out->i_dts = p_block->i_dts;
1081             p_out->i_pts = p_block->i_pts;
1082             p_out->i_length = p_block->i_length;
1083             block_ChainAppend( out, p_out );
1084
1085             p_block = p_block->p_next;
1086             block_Release( p_prev_block );
1087         }
1088     }
1089
1090     return VLC_SUCCESS;
1091 }
1092
1093
1094 /*
1095  * video
1096  */
1097 static int transcode_video_ffmpeg_new( sout_stream_t *p_stream,
1098                                        sout_stream_id_t *id )
1099 {
1100     sout_stream_sys_t   *p_sys = p_stream->p_sys;
1101
1102     int i_ff_codec;
1103
1104     /* Open decoder */
1105     if( id->f_src.i_codec == VLC_FOURCC( 'I', '4', '2', '0' ) ||
1106         id->f_src.i_codec == VLC_FOURCC( 'I', '4', '2', '2' ) ||
1107         id->f_src.i_codec == VLC_FOURCC( 'I', '4', '4', '4' ) ||
1108         id->f_src.i_codec == VLC_FOURCC( 'Y', 'V', '1', '2' ) ||
1109         id->f_src.i_codec == VLC_FOURCC( 'Y', 'U', 'Y', '2' ) ||
1110         id->f_src.i_codec == VLC_FOURCC( 'I', 'Y', 'U', 'V' ) ||
1111         id->f_src.i_codec == VLC_FOURCC( 'R', 'V', '1', '5' ) ||
1112         id->f_src.i_codec == VLC_FOURCC( 'R', 'V', '1', '6' ) ||
1113         id->f_src.i_codec == VLC_FOURCC( 'R', 'V', '2', '4' ) ||
1114         id->f_src.i_codec == VLC_FOURCC( 'R', 'V', '3', '2' ) ||
1115         id->f_src.i_codec == VLC_FOURCC( 'G', 'R', 'E', 'Y' ) )
1116     {
1117         id->ff_dec              = NULL;
1118         id->ff_dec_c            = avcodec_alloc_context();
1119         id->ff_dec_c->width     = id->f_src.video.i_width;
1120         id->ff_dec_c->height    = id->f_src.video.i_height;
1121         id->ff_dec_c->pix_fmt   = get_ff_chroma( id->f_src.i_codec );
1122
1123 #if LIBAVCODEC_BUILD >= 4687
1124         if( id->ff_dec_c->width )
1125         id->ff_dec_c->sample_aspect_ratio =
1126             av_d2q( id->f_src.video.i_aspect / (double)VOUT_ASPECT_FACTOR *
1127                     id->ff_dec_c->height / id->ff_dec_c->width, 255 );
1128 #else
1129         id->ff_dec_c->aspect_ratio =
1130             id->f_src.video.i_aspect / (float)VOUT_ASPECT_FACTOR;
1131 #endif
1132     }
1133     else
1134     {
1135         /* find decoder */
1136         i_ff_codec = get_ff_codec( id->f_src.i_codec );
1137         if( i_ff_codec == 0 )
1138         {
1139             msg_Err( p_stream, "cannot find decoder" );
1140             return VLC_EGENERIC;
1141         }
1142
1143         id->ff_dec = avcodec_find_decoder( i_ff_codec );
1144         if( !id->ff_dec )
1145         {
1146             msg_Err( p_stream, "cannot find decoder" );
1147             return VLC_EGENERIC;
1148         }
1149
1150         id->ff_dec_c = avcodec_alloc_context();
1151         id->ff_dec_c->width         = id->f_src.video.i_width;
1152         id->ff_dec_c->height        = id->f_src.video.i_height;
1153         id->ff_dec_c->bits_per_sample=id->f_src.video.i_bits_per_pixel;
1154         /* id->ff_dec_c->bit_rate      = id->f_src.i_bitrate; */
1155
1156         if( id->f_src.i_extra > 0 )
1157         {
1158             if( i_ff_codec == CODEC_ID_SVQ3 )
1159             {
1160                 int i_size = id->f_src.i_extra;
1161                 uint8_t *p;
1162
1163                 id->ff_dec_c->extradata_size = i_size + 12;
1164                 p = id->ff_dec_c->extradata  = malloc( i_size + 12 );
1165
1166                 memcpy( &p[0],  "SVQ3", 4 );
1167                 memset( &p[4], 0, 8 );
1168                 memcpy( &p[12], id->f_src.p_extra, i_size );
1169
1170                 /* Now remove all atoms before the SMI one */
1171                 if( id->ff_dec_c->extradata_size > 0x5a && strncmp( &p[0x56], "SMI ", 4 ) )
1172                 {
1173                     uint8_t *psz = &p[0x52];
1174
1175                     while( psz < &p[id->ff_dec_c->extradata_size - 8] )
1176                     {
1177                         int i_size = GetDWBE( psz );
1178                         if( i_size <= 1 )
1179                         {
1180                             /* FIXME handle 1 as long size */
1181                             break;
1182                         }
1183                         if( !strncmp( &psz[4], "SMI ", 4 ) )
1184                         {
1185                             memmove( &p[0x52], psz, &p[id->ff_dec_c->extradata_size] - psz );
1186                             break;
1187                         }
1188                         psz += i_size;
1189                     }
1190                 }
1191             }
1192             else
1193             {
1194                 id->ff_dec_c->extradata_size= id->f_src.i_extra;
1195                 id->ff_dec_c->extradata = malloc( id->f_src.i_extra + FF_INPUT_BUFFER_PADDING_SIZE );
1196
1197                 memcpy( id->ff_dec_c->extradata, id->f_src.p_extra, id->f_src.i_extra );
1198                 memset( (uint8_t*)id->ff_dec_c->extradata + id->f_src.i_extra, 0, FF_INPUT_BUFFER_PADDING_SIZE );
1199             }
1200         }
1201         id->ff_dec_c->workaround_bugs = FF_BUG_AUTODETECT;
1202         id->ff_dec_c->error_resilience= -1;
1203         id->ff_dec_c->get_buffer    = transcode_video_ffmpeg_getframebuf;
1204         id->ff_dec_c->opaque        = p_sys;
1205
1206         if( avcodec_open( id->ff_dec_c, id->ff_dec ) < 0 )
1207         {
1208             msg_Err( p_stream, "cannot open decoder" );
1209             return VLC_EGENERIC;
1210         }
1211     }
1212
1213     /* Open encoder */
1214     id->p_encoder = vlc_object_create( p_stream, VLC_OBJECT_ENCODER );
1215
1216     /* Initialization of encoder format structures */
1217     es_format_Init( &id->p_encoder->fmt_in,
1218                     id->f_src.i_cat, get_vlc_chroma(id->ff_dec_c->pix_fmt) );
1219
1220     /* The dimensions will be set properly later on.
1221      * Just put sensible values so we can test if there is an encoder. */
1222     id->p_encoder->fmt_in.video.i_width =
1223         id->f_src.video.i_width ?  id->f_src.video.i_width : 16;
1224     id->p_encoder->fmt_in.video.i_height =
1225         id->f_src.video.i_height ? id->f_src.video.i_height : 16;
1226
1227     id->p_encoder->fmt_in.video.i_frame_rate = 25; /* FIXME as it break mpeg */
1228     id->p_encoder->fmt_in.video.i_frame_rate_base= 1;
1229     if( id->ff_dec )
1230     {
1231         id->p_encoder->fmt_in.video.i_frame_rate = id->ff_dec_c->frame_rate;
1232 #if LIBAVCODEC_BUILD >= 4662
1233         id->p_encoder->fmt_in.video.i_frame_rate_base =
1234             id->ff_dec_c->frame_rate_base;
1235 #endif
1236
1237 #if LIBAVCODEC_BUILD >= 4687
1238         if( id->ff_dec_c->height )
1239         id->p_encoder->fmt_in.video.i_aspect = VOUT_ASPECT_FACTOR *
1240             ( av_q2d(id->ff_dec_c->sample_aspect_ratio) *
1241               id->ff_dec_c->width / id->ff_dec_c->height );
1242 #else
1243         id->p_encoder->fmt_in.video.i_aspect = VOUT_ASPECT_FACTOR *
1244             id->ff_dec_c->aspect_ratio;
1245 #endif
1246     }
1247
1248     /* Check whether a particular aspect ratio was requested */
1249     if( id->f_src.video.i_aspect )
1250     {
1251         id->p_encoder->fmt_in.video.i_aspect = id->f_src.video.i_aspect;
1252         id->f_dst.video.i_aspect = id->f_src.video.i_aspect;
1253     }
1254
1255     id->p_encoder->fmt_out = id->p_encoder->fmt_in;
1256     id->p_encoder->fmt_out.i_codec = id->f_dst.i_codec;
1257     id->p_encoder->fmt_out.i_bitrate = id->f_dst.i_bitrate;
1258
1259     id->p_encoder->i_vtolerance = p_sys->i_vtolerance;
1260     id->p_encoder->i_key_int = p_sys->i_key_int;
1261     id->p_encoder->i_b_frames = p_sys->i_b_frames;
1262     id->p_encoder->i_qmin = p_sys->i_qmin;
1263     id->p_encoder->i_qmax = p_sys->i_qmax;
1264     id->p_encoder->i_hq = p_sys->i_hq;
1265     id->p_encoder->b_strict_rc = p_sys->b_strict_rc;
1266     id->p_encoder->b_pre_me = p_sys->b_pre_me;
1267     id->p_encoder->b_hurry_up = p_sys->b_hurry_up;
1268     id->p_encoder->b_interlace = p_sys->b_interlace;
1269     id->p_encoder->i_rc_buffer_size = p_sys->i_rc_buffer_size;
1270     id->p_encoder->f_rc_buffer_aggressivity = p_sys->f_rc_buffer_aggressivity;
1271     id->p_encoder->f_i_quant_factor = p_sys->f_i_quant_factor;
1272     id->p_encoder->i_noise_reduction = p_sys->i_noise_reduction;
1273     id->p_encoder->b_mpeg4_matrix = p_sys->b_mpeg4_matrix;
1274     id->p_encoder->i_threads = p_sys->i_threads;
1275     id->p_encoder->b_trellis = p_sys->b_trellis;
1276
1277     id->p_ff_pic         = avcodec_alloc_frame();
1278     id->p_ff_pic_tmp0    = NULL;
1279     id->p_ff_pic_tmp1    = NULL;
1280     id->p_ff_pic_tmp2    = NULL;
1281     id->p_vresample      = NULL;
1282
1283     id->p_encoder->p_module =
1284         module_Need( id->p_encoder, "encoder", NULL, 0 );
1285
1286     if( !id->p_encoder->p_module )
1287     {
1288         vlc_object_destroy( id->p_encoder );
1289         msg_Err( p_stream, "cannot find encoder" );
1290         return VLC_EGENERIC;
1291     }
1292
1293     /* Close the encoder.
1294      * We'll open it only when we have the first frame */
1295     module_Unneed( id->p_encoder, id->p_encoder->p_module );
1296     id->p_encoder->p_module = NULL;
1297
1298     id->b_enc_inited = VLC_FALSE;
1299
1300     if ( p_sys->i_threads >= 1 )
1301     {
1302         p_sys->id_video = id;
1303         vlc_mutex_init( p_stream, &p_sys->lock_out );
1304         vlc_cond_init( p_stream, &p_sys->cond );
1305         memset( p_sys->pp_pics, 0, sizeof(p_sys->pp_pics) );
1306         p_sys->i_first_pic = 0;
1307         p_sys->i_last_pic = 0;
1308         p_sys->p_buffers = NULL;
1309         p_sys->b_die = p_sys->b_error = 0;
1310         if( vlc_thread_create( p_sys, "encoder", EncoderThread,
1311                                VLC_THREAD_PRIORITY_VIDEO, VLC_FALSE ) )
1312         {
1313             vlc_object_destroy( id->p_encoder );
1314             msg_Err( p_stream, "cannot spawn encoder thread" );
1315             return VLC_EGENERIC;
1316         }
1317     }
1318
1319     return VLC_SUCCESS;
1320 }
1321
1322 static void transcode_video_ffmpeg_close ( sout_stream_t *p_stream,
1323                                            sout_stream_id_t *id )
1324 {
1325     if ( p_stream->p_sys->i_threads >= 1 )
1326     {
1327        vlc_mutex_lock( &p_stream->p_sys->lock_out );
1328        p_stream->p_sys->b_die = 1;
1329        vlc_cond_signal( &p_stream->p_sys->cond );
1330        vlc_mutex_unlock( &p_stream->p_sys->lock_out );
1331        vlc_thread_join( p_stream->p_sys );
1332        vlc_mutex_destroy( &p_stream->p_sys->lock_out );
1333        vlc_cond_destroy( &p_stream->p_sys->cond );
1334     }
1335
1336     /* Close decoder */
1337     if( id->ff_dec )
1338     {
1339         avcodec_close( id->ff_dec_c );
1340         free( id->ff_dec_c );
1341     }
1342
1343     /* Close encoder */
1344     if( id->p_encoder->p_module )
1345         module_Unneed( id->p_encoder, id->p_encoder->p_module );
1346     vlc_object_destroy( id->p_encoder );
1347
1348     /* Misc cleanup */
1349     if( id->p_ff_pic)
1350     {
1351         free( id->p_ff_pic );
1352     }
1353
1354     if( id->p_ff_pic_tmp0 )
1355     {
1356         free( id->p_ff_pic_tmp0->data[0] );
1357         free( id->p_ff_pic_tmp0 );
1358     }
1359     if( id->p_ff_pic_tmp1)
1360     {
1361         free( id->p_ff_pic_tmp1->data[0] );
1362         free( id->p_ff_pic_tmp1 );
1363     }
1364     if( id->p_ff_pic_tmp2)
1365     {
1366         free( id->p_ff_pic_tmp2->data[0] );
1367         free( id->p_ff_pic_tmp2 );
1368     }
1369     if( id->p_vresample )
1370     {
1371         img_resample_close( id->p_vresample );
1372     }
1373 }
1374
1375 static int transcode_video_ffmpeg_process( sout_stream_t *p_stream,
1376                sout_stream_id_t *id, block_t *in, block_t **out )
1377 {
1378     sout_stream_sys_t   *p_sys = p_stream->p_sys;
1379     int     i_used;
1380     int     b_gotpicture;
1381     AVFrame *frame;
1382
1383     int     i_data;
1384     uint8_t *p_data;
1385
1386     *out = NULL;
1387
1388     i_data = in->i_buffer;
1389     p_data = in->p_buffer;
1390
1391     for( ;; )
1392     {
1393         block_t *p_block;
1394         picture_t * p_pic;
1395         int i_plane;
1396
1397         /* decode frame */
1398         frame = id->p_ff_pic;
1399         p_sys->i_input_pts = in->i_pts;
1400         p_sys->i_input_dts = in->i_dts;
1401         if( id->ff_dec )
1402         {
1403             i_used = avcodec_decode_video( id->ff_dec_c, frame,
1404                                            &b_gotpicture,
1405                                            p_data, i_data );
1406         }
1407         else
1408         {
1409             /* raw video */
1410             avpicture_fill( (AVPicture*)frame, p_data,
1411                             id->ff_dec_c->pix_fmt,
1412                             id->ff_dec_c->width, id->ff_dec_c->height );
1413             i_used = i_data;
1414             b_gotpicture = 1;
1415
1416             /* Set PTS */
1417             frame->pts = p_sys->i_input_pts ? p_sys->i_input_pts :
1418                          AV_NOPTS_VALUE;
1419
1420             frame->pict_type = FF_I_TYPE;
1421         }
1422
1423         if( i_used < 0 )
1424         {
1425             msg_Warn( p_stream, "error");
1426             return VLC_EGENERIC;
1427         }
1428         i_data -= i_used;
1429         p_data += i_used;
1430
1431         if( !b_gotpicture )
1432         {
1433             return VLC_SUCCESS;
1434         }
1435
1436         /* Get the pts of the decoded frame if any, otherwise keep the
1437          * interpolated one */
1438         if( frame->pts != AV_NOPTS_VALUE )
1439         {
1440             p_sys->i_output_pts = frame->pts;
1441         }
1442
1443         /* Sanity check (seems to be needed for some streams ) */
1444         if( frame->pict_type == FF_B_TYPE )
1445         {
1446             p_sys->b_input_has_b_frames = VLC_TRUE;
1447         }
1448
1449         if( !id->b_enc_inited )
1450         {
1451             /* Hack because of the copy packetizer which can fail to detect the
1452              * proper size (which forces us to wait until the 1st frame
1453              * is decoded) */
1454             int i_width = id->ff_dec_c->width - p_sys->i_crop_left -
1455                           p_sys->i_crop_right;
1456             int i_height = id->ff_dec_c->height - p_sys->i_crop_top -
1457                            p_sys->i_crop_bottom;
1458
1459             if( id->f_dst.video.i_width <= 0 && id->f_dst.video.i_height <= 0
1460                 && p_sys->f_scale )
1461             {
1462                 /* Apply the scaling */
1463                 id->f_dst.video.i_width = i_width * p_sys->f_scale;
1464                 id->f_dst.video.i_height = i_height * p_sys->f_scale;
1465             }
1466             else if( id->f_dst.video.i_width > 0 &&
1467                      id->f_dst.video.i_height <= 0 )
1468             {
1469                 id->f_dst.video.i_height =
1470                     id->f_dst.video.i_width / (double)i_width * i_height;
1471             }
1472             else if( id->f_dst.video.i_width <= 0 &&
1473                      id->f_dst.video.i_height > 0 )
1474             {
1475                 id->f_dst.video.i_width =
1476                     id->f_dst.video.i_height / (double)i_height * i_width;
1477             }
1478
1479             id->p_encoder->fmt_in.video.i_width =
1480               id->p_encoder->fmt_out.video.i_width =
1481                 id->f_dst.video.i_width;
1482             id->p_encoder->fmt_in.video.i_height =
1483               id->p_encoder->fmt_out.video.i_height =
1484                 id->f_dst.video.i_height;
1485
1486             id->p_encoder->fmt_out.i_extra = 0;
1487             id->p_encoder->fmt_out.p_extra = NULL;
1488
1489             id->p_encoder->p_module =
1490                 module_Need( id->p_encoder, "encoder", NULL, 0 );
1491             if( !id->p_encoder->p_module )
1492             {
1493                 vlc_object_destroy( id->p_encoder );
1494                 msg_Err( p_stream, "cannot find encoder" );
1495                 id->b_transcode = VLC_FALSE;
1496                 return VLC_EGENERIC;
1497             }
1498
1499             id->f_dst.i_extra = id->p_encoder->fmt_out.i_extra;
1500             id->f_dst.p_extra = id->p_encoder->fmt_out.p_extra;
1501
1502             /* Hack for mp2v/mp1v transcoding support */
1503             if( id->f_dst.i_codec == VLC_FOURCC( 'm','p','1','v' ) ||
1504                 id->f_dst.i_codec == VLC_FOURCC( 'm','p','2','v' ) )
1505             {
1506                 id->f_dst.i_codec = VLC_FOURCC( 'm','p','g','v' );
1507             }
1508
1509             if( !( id->id =
1510                      p_stream->p_sys->p_out->pf_add( p_stream->p_sys->p_out,
1511                                                      &id->f_dst ) ) )
1512             {
1513                 msg_Err( p_stream, "cannot add this stream" );
1514                 transcode_video_ffmpeg_close( p_stream, id );
1515                 id->b_transcode = VLC_FALSE;
1516                 return VLC_EGENERIC;
1517             }
1518
1519             if( id->p_encoder->pf_header )
1520             {
1521                 p_block = id->p_encoder->pf_header( id->p_encoder );
1522                 while( p_block )
1523                 {
1524                     block_t *p_out;
1525                     block_t *p_prev_block = p_block;
1526
1527                     p_out = block_New( p_stream,
1528                                             p_block->i_buffer );
1529                     memcpy( p_out->p_buffer, p_block->p_buffer,
1530                             p_block->i_buffer);
1531                     p_out->i_dts = p_out->i_pts = in->i_dts;
1532                     p_out->i_length = 0;
1533                     block_ChainAppend( out, p_out );
1534
1535                     p_block = p_block->p_next;
1536                     block_Release( p_prev_block );
1537                 }
1538             }
1539
1540             id->i_inter_pixfmt =
1541                 get_ff_chroma( id->p_encoder->fmt_in.i_codec );
1542
1543             id->b_enc_inited = VLC_TRUE;
1544         }
1545
1546         /* deinterlace */
1547         if( p_stream->p_sys->b_deinterlace )
1548         {
1549             if( id->p_ff_pic_tmp0 == NULL )
1550             {
1551                 int     i_size;
1552                 uint8_t *buf;
1553                 id->p_ff_pic_tmp0 = avcodec_alloc_frame();
1554                 i_size = avpicture_get_size( id->ff_dec_c->pix_fmt,
1555                                              id->ff_dec_c->width, id->ff_dec_c->height );
1556
1557                 buf = malloc( i_size );
1558
1559                 avpicture_fill( (AVPicture*)id->p_ff_pic_tmp0, buf,
1560                                 id->i_inter_pixfmt,
1561                                 id->ff_dec_c->width, id->ff_dec_c->height );
1562             }
1563
1564             avpicture_deinterlace( (AVPicture*)id->p_ff_pic_tmp0, (AVPicture*)frame,
1565                                    id->ff_dec_c->pix_fmt,
1566                                    id->ff_dec_c->width, id->ff_dec_c->height );
1567
1568 #if LIBAVCODEC_BUILD >= 4685
1569             id->p_ff_pic_tmp0->interlaced_frame = 0;
1570 #endif
1571             id->p_ff_pic_tmp0->repeat_pict = frame->repeat_pict;
1572             frame = id->p_ff_pic_tmp0;
1573         }
1574
1575         /* convert pix format */
1576         if( id->ff_dec_c->pix_fmt != id->i_inter_pixfmt )
1577         {
1578             if( id->p_ff_pic_tmp1 == NULL )
1579             {
1580                 int     i_size;
1581                 uint8_t *buf;
1582                 id->p_ff_pic_tmp1 = avcodec_alloc_frame();
1583                 i_size = avpicture_get_size( id->i_inter_pixfmt,
1584                                              id->ff_dec_c->width,
1585                                              id->ff_dec_c->height );
1586
1587                 buf = malloc( i_size );
1588
1589                 avpicture_fill( (AVPicture*)id->p_ff_pic_tmp1, buf,
1590                                 id->i_inter_pixfmt,
1591                                 id->ff_dec_c->width, id->ff_dec_c->height );
1592             }
1593
1594             img_convert( (AVPicture*)id->p_ff_pic_tmp1, id->i_inter_pixfmt,
1595                          (AVPicture*)frame, id->ff_dec_c->pix_fmt,
1596                          id->ff_dec_c->width, id->ff_dec_c->height );
1597
1598             id->p_ff_pic_tmp1->repeat_pict = frame->repeat_pict;
1599 #if LIBAVCODEC_BUILD >= 4685
1600             id->p_ff_pic_tmp1->interlaced_frame = frame->interlaced_frame;
1601             id->p_ff_pic_tmp1->top_field_first = frame->top_field_first;
1602 #endif
1603             frame = id->p_ff_pic_tmp1;
1604         }
1605
1606         /* convert size and crop */
1607         if( id->ff_dec_c->width  != id->f_dst.video.i_width ||
1608             id->ff_dec_c->height != id->f_dst.video.i_height ||
1609             p_sys->i_crop_top > 0 || p_sys->i_crop_bottom > 0 ||
1610             p_sys->i_crop_left > 0 || p_sys->i_crop_right > 0 )
1611         {
1612             if( id->p_ff_pic_tmp2 == NULL )
1613             {
1614                 int     i_size;
1615                 uint8_t *buf;
1616                 id->p_ff_pic_tmp2 = avcodec_alloc_frame();
1617                 i_size = avpicture_get_size( id->i_inter_pixfmt,
1618                                              id->f_dst.video.i_width,
1619                                              id->f_dst.video.i_height );
1620
1621                 buf = malloc( i_size );
1622
1623                 avpicture_fill( (AVPicture*)id->p_ff_pic_tmp2, buf,
1624                                 id->i_inter_pixfmt,
1625                                 id->f_dst.video.i_width,
1626                                 id->f_dst.video.i_height );
1627
1628                 id->p_vresample =
1629                     img_resample_full_init( id->f_dst.video.i_width,
1630                                             id->f_dst.video.i_height,
1631                                             id->ff_dec_c->width,
1632                                             id->ff_dec_c->height,
1633                                             p_stream->p_sys->i_crop_top,
1634                                             p_stream->p_sys->i_crop_bottom,
1635                                             p_stream->p_sys->i_crop_left,
1636                                             p_stream->p_sys->i_crop_right
1637 #if LIBAVCODEC_BUILD >= 4708
1638                                             ,0, 0, 0, 0 );
1639 #else
1640                                           );
1641 #endif
1642             }
1643
1644             img_resample( id->p_vresample, (AVPicture*)id->p_ff_pic_tmp2,
1645                           (AVPicture*)frame );
1646
1647             id->p_ff_pic_tmp2->repeat_pict = frame->repeat_pict;
1648 #if LIBAVCODEC_BUILD >= 4685
1649             id->p_ff_pic_tmp2->interlaced_frame = frame->interlaced_frame;
1650             id->p_ff_pic_tmp2->top_field_first = frame->top_field_first;
1651 #endif
1652             frame = id->p_ff_pic_tmp2;
1653         }
1654
1655         /* Encoding */
1656         p_pic = malloc(sizeof(picture_t));
1657         vout_InitPicture( VLC_OBJECT(p_stream), p_pic,
1658                           id->p_encoder->fmt_in.i_codec,
1659                           id->f_dst.video.i_width, id->f_dst.video.i_height,
1660                           id->f_dst.video.i_width * VOUT_ASPECT_FACTOR /
1661                           id->f_dst.video.i_height );
1662
1663         for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
1664         {
1665             p_pic->p[i_plane].i_pitch = frame->linesize[i_plane];
1666             if ( p_sys->i_threads >= 1 )
1667             {
1668                 p_pic->p[i_plane].p_pixels = malloc(p_pic->p[i_plane].i_lines *
1669                                                     p_pic->p[i_plane].i_pitch);
1670                 p_stream->p_vlc->pf_memcpy( p_pic->p[i_plane].p_pixels,
1671                     frame->data[i_plane], p_pic->p[i_plane].i_lines *
1672                      p_pic->p[i_plane].i_pitch );
1673             }
1674             else
1675             {
1676                 p_pic->p[i_plane].p_pixels = frame->data[i_plane];
1677             }
1678         }
1679
1680         /* Set the pts of the frame being encoded */
1681         p_pic->date = p_sys->i_output_pts;
1682
1683         p_pic->i_nb_fields = frame->repeat_pict;
1684 #if LIBAVCODEC_BUILD >= 4685
1685         p_pic->b_progressive = !frame->interlaced_frame;
1686         p_pic->b_top_field_first = frame->top_field_first;
1687 #endif
1688
1689         /* Interpolate the next PTS
1690          * (needed by the mpeg video packetizer which can send pts <= 0 ) */
1691         if( id->ff_dec_c && id->ff_dec_c->frame_rate > 0 )
1692         {
1693             p_sys->i_output_pts += I64C(1000000) * (2 + frame->repeat_pict) *
1694               id->ff_dec_c->frame_rate_base / (2 * id->ff_dec_c->frame_rate);
1695         }
1696
1697         if ( p_sys->i_threads >= 1 )
1698         {
1699             vlc_mutex_lock( &p_sys->lock_out );
1700             p_sys->pp_pics[p_sys->i_last_pic++] = p_pic;
1701             p_sys->i_last_pic %= PICTURE_RING_SIZE;
1702             *out = p_sys->p_buffers;
1703             p_sys->p_buffers = NULL;
1704             vlc_cond_signal( &p_sys->cond );
1705             vlc_mutex_unlock( &p_sys->lock_out );
1706         }
1707         else
1708         {
1709             block_t *p_block;
1710             p_block = id->p_encoder->pf_encode_video( id->p_encoder, p_pic );
1711             if( p_block )
1712             {
1713                 block_ChainAppend( out, p_block );
1714             }
1715             free( p_pic );
1716         }
1717
1718         if( i_data <= 0 )
1719         {
1720             return VLC_SUCCESS;
1721         }
1722     }
1723
1724     return VLC_SUCCESS;
1725 }
1726
1727 static int EncoderThread( sout_stream_sys_t * p_sys )
1728 {
1729     sout_stream_id_t * id = p_sys->id_video;
1730     picture_t * p_pic;
1731     int i_plane;
1732
1733     while ( !p_sys->b_die && !p_sys->b_error )
1734     {
1735         block_t *p_block;
1736
1737         vlc_mutex_lock( &p_sys->lock_out );
1738         while ( p_sys->i_last_pic == p_sys->i_first_pic )
1739         {
1740             vlc_cond_wait( &p_sys->cond, &p_sys->lock_out );
1741             if ( p_sys->b_die || p_sys->b_error )
1742                 break;
1743         }
1744         if ( p_sys->b_die || p_sys->b_error )
1745         {
1746             vlc_mutex_unlock( &p_sys->lock_out );
1747             break;
1748         }
1749
1750         p_pic = p_sys->pp_pics[p_sys->i_first_pic++];
1751         p_sys->i_first_pic %= PICTURE_RING_SIZE;
1752         vlc_mutex_unlock( &p_sys->lock_out );
1753
1754         p_block = id->p_encoder->pf_encode_video( id->p_encoder, p_pic );
1755         vlc_mutex_lock( &p_sys->lock_out );
1756         if( p_block )
1757         {
1758             block_ChainAppend( &p_sys->p_buffers, p_block );
1759         }
1760         vlc_mutex_unlock( &p_sys->lock_out );
1761
1762         for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
1763         {
1764             free( p_pic->p[i_plane].p_pixels );
1765         }
1766         free( p_pic );
1767     }
1768
1769     while ( p_sys->i_last_pic != p_sys->i_first_pic )
1770     {
1771         p_pic = p_sys->pp_pics[p_sys->i_first_pic++];
1772         p_sys->i_first_pic %= PICTURE_RING_SIZE;
1773
1774         for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
1775         {
1776             free( p_pic->p[i_plane].p_pixels );
1777         }
1778         free( p_pic );
1779     }
1780
1781     block_ChainRelease( p_sys->p_buffers );
1782
1783     return 0;
1784 }
1785
1786 /*****************************************************************************
1787  * transcode_video_ffmpeg_getframebuf:
1788  *
1789  * Callback used by ffmpeg to get a frame buffer.
1790  * We use it to get the right PTS for each decoded picture.
1791  *****************************************************************************/
1792 static int transcode_video_ffmpeg_getframebuf(struct AVCodecContext *p_context,
1793                                               AVFrame *p_frame)
1794 {
1795     sout_stream_sys_t *p_sys = (sout_stream_sys_t *)p_context->opaque;
1796
1797     /* Set PTS */
1798     if( p_sys->i_input_pts )
1799     {
1800         p_frame->pts = p_sys->i_input_pts;
1801     }
1802     else if( p_sys->i_input_dts )
1803     {
1804         /* Some demuxers/packetizers only set the dts so let's try to find a
1805          * useful timestamp from this */
1806         if( !p_context->has_b_frames || !p_sys->b_input_has_b_frames ||
1807             !p_frame->reference || !p_sys->i_output_pts )
1808         {
1809             p_frame->pts = p_sys->i_input_dts +
1810                 /* Hack: ffmpeg encoding doesn't like frames with identical pts */
1811                 (p_sys->i_output_pts ? 0 : 50000);
1812         }
1813         else p_frame->pts = AV_NOPTS_VALUE;
1814     }
1815     else p_frame->pts = AV_NOPTS_VALUE;
1816
1817     if( p_sys->i_output_pts ) /* make sure 1st frame has a pts > 0 */
1818     {
1819         p_sys->i_input_pts = 0;
1820         p_sys->i_input_dts = 0;
1821     }
1822
1823     return avcodec_default_get_buffer( p_context, p_frame );
1824 }