git.sesse.net Git - vlc/blob - modules/stream_out/transcode.c

   1 /*****************************************************************************
   2  * transcode.c
   3  *****************************************************************************
   4  * Copyright (C) 2001, 2002 VideoLAN
   5  * $Id: transcode.c,v 1.69 2004/01/19 14:40:25 fenrir Exp $
   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 /*****************************************************************************
  45  * Exported prototypes
  46  *****************************************************************************/
  47 static int      Open    ( vlc_object_t * );
  48 static void     Close   ( vlc_object_t * );
  49
  50 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
  51 static int               Del ( sout_stream_t *, sout_stream_id_t * );
  52 static int               Send( sout_stream_t *, sout_stream_id_t *, sout_buffer_t* );
  53
  54 static int  transcode_audio_ffmpeg_new    ( sout_stream_t *, sout_stream_id_t * );
  55 static void transcode_audio_ffmpeg_close  ( sout_stream_t *, sout_stream_id_t * );
  56 static int  transcode_audio_ffmpeg_process( sout_stream_t *, sout_stream_id_t *, sout_buffer_t *, sout_buffer_t ** );
  57
  58 static int  transcode_video_ffmpeg_new    ( sout_stream_t *, sout_stream_id_t * );
  59 static void transcode_video_ffmpeg_close  ( sout_stream_t *, sout_stream_id_t * );
  60 static int  transcode_video_ffmpeg_process( sout_stream_t *, sout_stream_id_t *, sout_buffer_t *, sout_buffer_t ** );
  61
  62 static int  transcode_video_ffmpeg_getframebuf( struct AVCodecContext *, AVFrame *);
  63
  64 static int pi_channels_maps[6] =
  65 {
  66     0,
  67     AOUT_CHAN_CENTER,   AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
  68     AOUT_CHAN_CENTER | AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
  69     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARLEFT
  70      | AOUT_CHAN_REARRIGHT,
  71     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
  72      | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
  73 };
  74
  75 /*****************************************************************************
  76  * Module descriptor
  77  *****************************************************************************/
  78 vlc_module_begin();
  79     set_description( _("Transcode stream") );
  80     set_capability( "sout stream", 50 );
  81     add_shortcut( "transcode" );
  82     set_callbacks( Open, Close );
  83 vlc_module_end();
  84
  85 struct sout_stream_sys_t
  86 {
  87     sout_stream_t   *p_out;
  88
  89     vlc_fourcc_t    i_acodec;   /* codec audio (0 if not transcode) */
  90     int             i_sample_rate;
  91     int             i_channels;
  92     int             i_abitrate;
  93
  94     vlc_fourcc_t    i_vcodec;   /*    "   video  " "   "      " */
  95     int             i_vbitrate;
  96     int             i_vtolerance;
  97     double          f_scale;
  98     int             i_width;
  99     int             i_height;
 100     int             i_b_frames;
 101     int             i_key_int;
 102     int             i_qmin;
 103     int             i_qmax;
 104     vlc_bool_t      i_hq;
 105     vlc_bool_t      b_deinterlace;
 106     vlc_bool_t      b_strict_rc;
 107     vlc_bool_t      b_pre_me;
 108     vlc_bool_t      b_hurry_up;
 109
 110     int             i_crop_top;
 111     int             i_crop_bottom;
 112     int             i_crop_right;
 113     int             i_crop_left;
 114
 115     mtime_t         i_input_pts;
 116     mtime_t         i_output_pts;
 117 };
 118
 119 /*****************************************************************************
 120  * Open:
 121  *****************************************************************************/
 122 static int Open( vlc_object_t *p_this )
 123 {
 124     sout_stream_t     *p_stream = (sout_stream_t*)p_this;
 125     sout_stream_sys_t *p_sys;
 126     char *codec;
 127
 128     p_sys = malloc( sizeof( sout_stream_sys_t ) );
 129     memset( p_sys, 0, sizeof(struct sout_stream_sys_t) );
 130     p_sys->p_out = sout_stream_new( p_stream->p_sout, p_stream->psz_next );
 131
 132     p_sys->f_scale      = 1;
 133     p_sys->i_vtolerance = -1;
 134     p_sys->i_key_int    = -1;
 135     p_sys->i_qmin       = 2;
 136     p_sys->i_qmax       = 31;
 137 #if LIBAVCODEC_BUILD >= 4673
 138     p_sys->i_hq         = FF_MB_DECISION_SIMPLE;
 139 #else
 140     p_sys->i_hq         = VLC_FALSE;
 141 #endif
 142
 143     if( ( codec = sout_cfg_find_value( p_stream->p_cfg, "acodec" ) ) )
 144     {
 145         char fcc[4] = "    ";
 146         char *val;
 147
 148         memcpy( fcc, codec, __MIN( strlen( codec ), 4 ) );
 149
 150         p_sys->i_acodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
 151
 152         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "samplerate" ) ) )
 153         {
 154             p_sys->i_sample_rate = atoi( val );
 155         }
 156         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "channels" ) ) )
 157         {
 158             p_sys->i_channels = atoi( val );
 159         }
 160         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "ab" ) ) )
 161         {
 162             p_sys->i_abitrate = atoi( val );
 163             if( p_sys->i_abitrate < 4000 )
 164             {
 165                 p_sys->i_abitrate *= 1000;
 166             }
 167         }
 168
 169         msg_Dbg( p_stream, "codec audio=%4.4s %dHz %d channels %dKb/s", fcc,
 170                  p_sys->i_sample_rate, p_sys->i_channels,
 171                  p_sys->i_abitrate / 1024 );
 172     }
 173
 174     if( ( codec = sout_cfg_find_value( p_stream->p_cfg, "vcodec" ) ) )
 175     {
 176         char fcc[4] = "    ";
 177         char *val;
 178
 179         memcpy( fcc, codec, __MIN( strlen( codec ), 4 ) );
 180
 181         p_sys->i_vcodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
 182
 183         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "scale" ) ) )
 184         {
 185             p_sys->f_scale = atof( val );
 186         }
 187         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "width" ) ) )
 188         {
 189             p_sys->i_width = atoi( val );
 190         }
 191         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "height" ) ) )
 192         {
 193             p_sys->i_height = atoi( val );
 194         }
 195         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "vb" ) ) )
 196         {
 197             p_sys->i_vbitrate = atoi( val );
 198             if( p_sys->i_vbitrate < 16000 )
 199             {
 200                 p_sys->i_vbitrate *= 1000;
 201             }
 202         }
 203         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "vt" ) ) )
 204         {
 205             p_sys->i_vtolerance = atoi( val );
 206         }
 207         if( sout_cfg_find( p_stream->p_cfg, "deinterlace" ) )
 208         {
 209             p_sys->b_deinterlace = VLC_TRUE;
 210         }
 211         if( sout_cfg_find( p_stream->p_cfg, "strict_rc" ) )
 212         {
 213             p_sys->b_strict_rc = VLC_TRUE;
 214         }
 215         if( sout_cfg_find( p_stream->p_cfg, "pre_me" ) )
 216         {
 217             p_sys->b_pre_me = VLC_TRUE;
 218         }
 219         if( sout_cfg_find( p_stream->p_cfg, "hurry_up" ) )
 220         {
 221             p_sys->b_hurry_up = VLC_TRUE;
 222         }
 223         /* crop */
 224         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "croptop" ) ) )
 225         {
 226             p_sys->i_crop_top = atoi( val );
 227         }
 228         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "cropbottom" ) ) )
 229         {
 230             p_sys->i_crop_bottom = atoi( val );
 231         }
 232         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "cropleft" ) ) )
 233         {
 234             p_sys->i_crop_left = atoi( val );
 235         }
 236         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "cropright" ) ) )
 237         {
 238             p_sys->i_crop_right = atoi( val );
 239         }
 240         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "keyint" ) ) )
 241         {
 242             p_sys->i_key_int    = atoi( val );
 243         }
 244         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "bframes" ) ) )
 245         {
 246             p_sys->i_b_frames   = atoi( val );
 247         }
 248 #if LIBAVCODEC_BUILD >= 4673
 249         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "hq" ) ) )
 250         {
 251             if( !strcmp( val, "rd" ) )
 252             {
 253                 p_sys->i_hq = FF_MB_DECISION_RD;
 254             }
 255             else if( !strcmp( val, "bits" ) )
 256             {
 257                 p_sys->i_hq = FF_MB_DECISION_BITS;
 258             }
 259             else if( !strcmp( val, "simple" ) )
 260             {
 261                 p_sys->i_hq = FF_MB_DECISION_SIMPLE;
 262             }
 263             else
 264             {
 265                 p_sys->i_hq = FF_MB_DECISION_RD;
 266             }
 267         }
 268 #else
 269         if( sout_cfg_find( p_stream->p_cfg, "hq" ) )
 270         {
 271             p_sys->i_hq = VLC_TRUE;
 272         }
 273 #endif
 274         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "qmin" ) ) )
 275         {
 276             p_sys->i_qmin   = atoi( val );
 277         }
 278         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "qmax" ) ) )
 279         {
 280             p_sys->i_qmax   = atoi( val );
 281         }
 282
 283         msg_Dbg( p_stream, "codec video=%4.4s %dx%d scaling: %f %dkb/s",
 284                  fcc, p_sys->i_width, p_sys->i_height, p_sys->f_scale,
 285                  p_sys->i_vbitrate / 1024 );
 286     }
 287
 288     if( !p_sys->p_out )
 289     {
 290         msg_Err( p_stream, "cannot create chain" );
 291         free( p_sys );
 292         return VLC_EGENERIC;
 293     }
 294
 295     p_stream->pf_add    = Add;
 296     p_stream->pf_del    = Del;
 297     p_stream->pf_send   = Send;
 298     p_stream->p_sys     = p_sys;
 299
 300     avcodec_init();
 301     avcodec_register_all();
 302
 303     /* ffmpeg needs some padding at the end of each buffer */
 304     p_stream->p_sout->i_padding += FF_INPUT_BUFFER_PADDING_SIZE;
 305
 306     return VLC_SUCCESS;
 307 }
 308
 309 /*****************************************************************************
 310  * Close:
 311  *****************************************************************************/
 312 static void Close( vlc_object_t * p_this )
 313 {
 314     sout_stream_t       *p_stream = (sout_stream_t*)p_this;
 315     sout_stream_sys_t   *p_sys = p_stream->p_sys;
 316
 317     sout_stream_delete( p_sys->p_out );
 318     free( p_sys );
 319 }
 320
 321 struct sout_stream_id_t
 322 {
 323     vlc_fourcc_t  b_transcode;
 324     es_format_t f_src;        /* only if transcoding */
 325     es_format_t f_dst;        /*  "   "      " */
 326     unsigned int  i_inter_pixfmt; /* intermediary format when transcoding */
 327
 328     /* id of the out stream */
 329     void *id;
 330
 331     /* Encoder */
 332     encoder_t       *p_encoder;
 333     vlc_fourcc_t    b_enc_inited;
 334
 335     /* ffmpeg part */
 336     AVCodec         *ff_dec;
 337     AVCodecContext  *ff_dec_c;
 338
 339     mtime_t         i_dts;
 340     mtime_t         i_length;
 341
 342     int             i_buffer;
 343     int             i_buffer_pos;
 344     uint8_t         *p_buffer;
 345
 346     AVFrame         *p_ff_pic;
 347     AVFrame         *p_ff_pic_tmp0; /* to do deinterlace */
 348     AVFrame         *p_ff_pic_tmp1; /* to do pix conversion */
 349     AVFrame         *p_ff_pic_tmp2; /* to do resample */
 350
 351     ImgReSampleContext *p_vresample;
 352 };
 353
 354
 355 static sout_stream_id_t * Add( sout_stream_t *p_stream, es_format_t *p_fmt )
 356 {
 357     sout_stream_sys_t   *p_sys = p_stream->p_sys;
 358     sout_stream_id_t    *id;
 359
 360     id = malloc( sizeof( sout_stream_id_t ) );
 361     id->i_dts = 0;
 362     id->id = NULL;
 363     id->p_encoder = NULL;
 364
 365     if( p_fmt->i_cat == AUDIO_ES && p_sys->i_acodec != 0 )
 366     {
 367         msg_Dbg( p_stream,
 368                  "creating audio transcoding from fcc=`%4.4s' to fcc=`%4.4s'",
 369                  (char*)&p_fmt->i_codec,
 370                  (char*)&p_sys->i_acodec );
 371
 372         /* src format */
 373         memcpy( &id->f_src, p_fmt, sizeof( es_format_t ) );
 374
 375         /* create dst format */
 376         es_format_Init( &id->f_dst, AUDIO_ES, p_sys->i_acodec );
 377         id->f_dst.i_group = id->f_src->i_group;
 378         id->f_dst.audio.i_rate = p_sys->i_sample_rate  > 0 ? p_sys->i_sample_rate : id->f_src.audio.i_rate;
 379         id->f_dst.audio.i_channels    = p_sys->i_channels > 0 ? p_sys->i_channels : id->f_src.audio.i_channels;
 380         id->f_dst.i_bitrate     = p_sys->i_abitrate > 0 ? p_sys->i_abitrate : 64000;
 381         id->f_dst.audio.i_blockalign = 0;
 382         id->f_dst.i_extra  = 0;
 383         id->f_dst.p_extra  = NULL;
 384
 385         /* build decoder -> filter -> encoder */
 386         if( transcode_audio_ffmpeg_new( p_stream, id ) )
 387         {
 388             msg_Err( p_stream, "cannot create audio chain" );
 389             free( id );
 390             return NULL;
 391         }
 392
 393         /* open output stream */
 394         id->id = p_sys->p_out->pf_add( p_sys->p_out, &id->f_dst );
 395         id->b_transcode = VLC_TRUE;
 396
 397         if( id->id == NULL )
 398         {
 399             free( id );
 400             return NULL;
 401         }
 402     }
 403     else if( p_fmt->i_cat == VIDEO_ES && p_sys->i_vcodec != 0 )
 404     {
 405         msg_Dbg( p_stream,
 406                  "creating video transcoding from fcc=`%4.4s' to fcc=`%4.4s'",
 407                  (char*)&p_fmt->i_codec,
 408                  (char*)&p_sys->i_vcodec );
 409
 410         memcpy( &id->f_src, p_fmt, sizeof( es_format_t ) );
 411
 412         /* create dst format */
 413         es_format_Init( &id->f_dst, VIDEO_ES, p_sys->i_vcodec );
 414         id->f_dst.i_group = id->f_src->i_group;
 415         id->f_dst.video.i_width = p_sys->i_width;
 416         id->f_dst.video.i_height= p_sys->i_height;
 417         id->f_dst.i_bitrate     = p_sys->i_vbitrate > 0 ? p_sys->i_vbitrate : 800*1000;
 418         id->f_dst.i_extra       = 0;
 419         id->f_dst.p_extra       = NULL;
 420
 421         /* build decoder -> filter -> encoder */
 422         if( transcode_video_ffmpeg_new( p_stream, id ) )
 423         {
 424             msg_Err( p_stream, "cannot create video chain" );
 425             free( id );
 426             return NULL;
 427         }
 428 #if 0
 429         /* open output stream */
 430         id->id = p_sys->p_out->pf_add( p_sys->p_out, &id->f_dst );
 431 #endif
 432         id->b_transcode = VLC_TRUE;
 433     }
 434     else
 435     {
 436         msg_Dbg( p_stream, "not transcoding a stream (fcc=`%4.4s')", (char*)&p_fmt->i_codec );
 437         id->id = p_sys->p_out->pf_add( p_sys->p_out, p_fmt );
 438         id->b_transcode = VLC_FALSE;
 439
 440         if( id->id == NULL )
 441         {
 442             free( id );
 443             return NULL;
 444         }
 445     }
 446
 447     return id;
 448 }
 449
 450 static int     Del      ( sout_stream_t *p_stream, sout_stream_id_t *id )
 451 {
 452     sout_stream_sys_t   *p_sys = p_stream->p_sys;
 453
 454     if( id->b_transcode )
 455     {
 456         if( id->f_src.i_cat == AUDIO_ES )
 457         {
 458             transcode_audio_ffmpeg_close( p_stream, id );
 459         }
 460         else if( id->f_src.i_cat == VIDEO_ES )
 461         {
 462             transcode_video_ffmpeg_close( p_stream, id );
 463         }
 464     }
 465
 466     if( id->id ) p_sys->p_out->pf_del( p_sys->p_out, id->id );
 467     free( id );
 468
 469     return VLC_SUCCESS;
 470 }
 471
 472 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
 473                  sout_buffer_t *p_buffer )
 474 {
 475     sout_stream_sys_t   *p_sys = p_stream->p_sys;
 476
 477     if( id->b_transcode )
 478     {
 479         sout_buffer_t *p_buffer_out;
 480         if( id->f_src.i_cat == AUDIO_ES )
 481         {
 482             transcode_audio_ffmpeg_process( p_stream, id, p_buffer,
 483                                             &p_buffer_out );
 484         }
 485         else if( id->f_src.i_cat == VIDEO_ES )
 486         {
 487             if( transcode_video_ffmpeg_process( p_stream, id, p_buffer,
 488                 &p_buffer_out ) != VLC_SUCCESS )
 489             {
 490                 sout_BufferDelete( p_stream->p_sout, p_buffer );
 491                 return VLC_EGENERIC;
 492             }
 493         }
 494         sout_BufferDelete( p_stream->p_sout, p_buffer );
 495
 496         if( p_buffer_out )
 497         {
 498             return p_sys->p_out->pf_send( p_sys->p_out, id->id, p_buffer_out );
 499         }
 500         return VLC_SUCCESS;
 501     }
 502     else if( id->id != NULL )
 503     {
 504         return p_sys->p_out->pf_send( p_sys->p_out, id->id, p_buffer );
 505     }
 506     else
 507     {
 508         sout_BufferDelete( p_stream->p_sout, p_buffer );
 509         return VLC_EGENERIC;
 510     }
 511 }
 512
 513 /****************************************************************************
 514  * ffmpeg decoder reencocdr part
 515  ****************************************************************************/
 516
 517 static struct
 518 {
 519     vlc_fourcc_t i_fcc;
 520     int          i_ff_codec;
 521 } fourcc_to_ff_code[] =
 522 {
 523     /* audio */
 524     { VLC_FOURCC( 'm', 'p', 'g', 'a' ), CODEC_ID_MP2 },
 525     { VLC_FOURCC( 'm', 'p', '3', ' ' ), CODEC_ID_MP3LAME },
 526     { VLC_FOURCC( 'm', 'p', '4', 'a' ), CODEC_ID_AAC },
 527     { VLC_FOURCC( 'a', '5', '2', ' ' ), CODEC_ID_AC3 },
 528     { VLC_FOURCC( 'a', 'c', '3', ' ' ), CODEC_ID_AC3 },
 529     { VLC_FOURCC( 'w', 'm', 'a', '1' ), CODEC_ID_WMAV1 },
 530     { VLC_FOURCC( 'w', 'm', 'a', '2' ), CODEC_ID_WMAV2 },
 531     { VLC_FOURCC( 'v', 'o', 'r', 'b' ), CODEC_ID_VORBIS },
 532     { VLC_FOURCC( 'a', 'l', 'a', 'w' ), CODEC_ID_PCM_ALAW },
 533
 534     /* video */
 535     { VLC_FOURCC( 'm', 'p', 'g', 'v' ), CODEC_ID_MPEG1VIDEO },
 536     { VLC_FOURCC( 'm', 'p', '1', 'v' ), CODEC_ID_MPEG1VIDEO },
 537 #if LIBAVCODEC_BUILD >= 4676
 538     { VLC_FOURCC( 'm', 'p', '2', 'v' ), CODEC_ID_MPEG2VIDEO },
 539 #endif
 540     { VLC_FOURCC( 'm', 'p', '4', 'v'),  CODEC_ID_MPEG4 },
 541     { VLC_FOURCC( 'D', 'I', 'V', '1' ), CODEC_ID_MSMPEG4V1 },
 542     { VLC_FOURCC( 'D', 'I', 'V', '2' ), CODEC_ID_MSMPEG4V2 },
 543     { VLC_FOURCC( 'D', 'I', 'V', '3' ), CODEC_ID_MSMPEG4V3 },
 544     { VLC_FOURCC( 'H', '2', '6', '3' ), CODEC_ID_H263 },
 545     { VLC_FOURCC( 'I', '2', '6', '3' ), CODEC_ID_H263I },
 546     { VLC_FOURCC( 'h', 'u', 'f', 'f' ), CODEC_ID_HUFFYUV },
 547     { VLC_FOURCC( 'W', 'M', 'V', '1' ), CODEC_ID_WMV1 },
 548     { VLC_FOURCC( 'W', 'M', 'V', '2' ), CODEC_ID_WMV2 },
 549     { VLC_FOURCC( 'M', 'J', 'P', 'G' ), CODEC_ID_MJPEG },
 550     { VLC_FOURCC( 'm', 'j', 'p', 'b' ), CODEC_ID_MJPEGB },
 551     { VLC_FOURCC( 'd', 'v', 's', 'l' ), CODEC_ID_DVVIDEO },
 552     { VLC_FOURCC( 'S', 'V', 'Q', '1' ), CODEC_ID_SVQ1 },
 553 #if LIBAVCODEC_BUILD >= 4666
 554     { VLC_FOURCC( 'S', 'V', 'Q', '3' ), CODEC_ID_SVQ3 },
 555 #endif
 556
 557     /* raw video code, only used for 'encoding' */
 558     { VLC_FOURCC( 'I', '4', '2', '0' ), CODEC_ID_RAWVIDEO },
 559     { VLC_FOURCC( 'I', '4', '2', '2' ), CODEC_ID_RAWVIDEO },
 560     { VLC_FOURCC( 'I', '4', '4', '4' ), CODEC_ID_RAWVIDEO },
 561     { VLC_FOURCC( 'R', 'V', '1', '5' ), CODEC_ID_RAWVIDEO },
 562     { VLC_FOURCC( 'R', 'V', '1', '6' ), CODEC_ID_RAWVIDEO },
 563     { VLC_FOURCC( 'R', 'V', '2', '4' ), CODEC_ID_RAWVIDEO },
 564     { VLC_FOURCC( 'R', 'V', '3', '2' ), CODEC_ID_RAWVIDEO },
 565     { VLC_FOURCC( 'Y', 'U', 'Y', '2' ), CODEC_ID_RAWVIDEO },
 566     { VLC_FOURCC( 'Y', 'V', '1', '2' ), CODEC_ID_RAWVIDEO },
 567     { VLC_FOURCC( 'I', 'Y', 'U', 'V' ), CODEC_ID_RAWVIDEO },
 568
 569     { VLC_FOURCC(   0,   0,   0,   0 ), 0 }
 570 };
 571
 572 static inline int get_ff_codec( vlc_fourcc_t i_fcc )
 573 {
 574     int i;
 575
 576     for( i = 0; fourcc_to_ff_code[i].i_fcc != 0; i++ )
 577     {
 578         if( fourcc_to_ff_code[i].i_fcc == i_fcc )
 579         {
 580             return fourcc_to_ff_code[i].i_ff_codec;
 581         }
 582     }
 583
 584     return 0;
 585 }
 586
 587 static inline int get_ff_chroma( vlc_fourcc_t i_chroma )
 588 {
 589     switch( i_chroma )
 590     {
 591         case VLC_FOURCC( 'Y', 'V', '1', '2' ):
 592         case VLC_FOURCC( 'I', 'Y', 'U', 'V' ):
 593         case VLC_FOURCC( 'I', '4', '2', '0' ):
 594             return PIX_FMT_YUV420P;
 595         case VLC_FOURCC( 'I', '4', '2', '2' ):
 596             return PIX_FMT_YUV422P;
 597         case VLC_FOURCC( 'I', '4', '4', '4' ):
 598             return PIX_FMT_YUV444P;
 599         case VLC_FOURCC( 'R', 'V', '1', '5' ):
 600             return PIX_FMT_RGB555;
 601         case VLC_FOURCC( 'R', 'V', '1', '6' ):
 602             return PIX_FMT_RGB565;
 603         case VLC_FOURCC( 'R', 'V', '2', '4' ):
 604             return PIX_FMT_RGB24;
 605         case VLC_FOURCC( 'R', 'V', '3', '2' ):
 606             return PIX_FMT_RGBA32;
 607         case VLC_FOURCC( 'G', 'R', 'E', 'Y' ):
 608             return PIX_FMT_GRAY8;
 609         case VLC_FOURCC( 'Y', 'U', 'Y', '2' ):
 610             return PIX_FMT_YUV422;
 611         default:
 612             return 0;
 613     }
 614 }
 615
 616 static inline vlc_fourcc_t get_vlc_chroma( int i_pix_fmt )
 617 {
 618     switch( i_pix_fmt )
 619     {
 620     case PIX_FMT_YUV420P:
 621         return VLC_FOURCC('I','4','2','0');
 622     case PIX_FMT_YUV422P:
 623         return VLC_FOURCC('I','4','2','2');
 624     case PIX_FMT_YUV444P:
 625         return VLC_FOURCC('I','4','4','4');
 626
 627     case PIX_FMT_YUV422:
 628         return VLC_FOURCC('Y','U','Y','2');
 629
 630     case PIX_FMT_RGB555:
 631         return VLC_FOURCC('R','V','1','5');
 632     case PIX_FMT_RGB565:
 633         return VLC_FOURCC('R','V','1','6');
 634     case PIX_FMT_RGB24:
 635         return VLC_FOURCC('R','V','2','4');
 636     case PIX_FMT_RGBA32:
 637         return VLC_FOURCC('R','V','3','2');
 638     case PIX_FMT_GRAY8:
 639         return VLC_FOURCC('G','R','E','Y');
 640
 641     case PIX_FMT_YUV410P:
 642     case PIX_FMT_YUV411P:
 643     case PIX_FMT_BGR24:
 644     default:
 645         return 0;
 646     }
 647 }
 648
 649 static int transcode_audio_ffmpeg_new( sout_stream_t *p_stream,
 650                                        sout_stream_id_t *id )
 651 {
 652     int i_ff_codec;
 653
 654     if( id->f_src.i_codec == VLC_FOURCC('s','1','6','l') ||
 655         id->f_src.i_codec == VLC_FOURCC('s','1','6','b') ||
 656         id->f_src.i_codec == VLC_FOURCC('s','8',' ',' ') ||
 657         id->f_src.i_codec == VLC_FOURCC('u','8',' ',' ') )
 658     {
 659         id->ff_dec = NULL;
 660
 661         id->ff_dec_c = avcodec_alloc_context();
 662         id->ff_dec_c->sample_rate = id->f_src.audio.i_rate;
 663         id->ff_dec_c->channels    = id->f_src.audio.i_channels;
 664         id->ff_dec_c->block_align = id->f_src.audio.i_blockalign;
 665         id->ff_dec_c->bit_rate    = id->f_src.i_bitrate;
 666     }
 667     else
 668     {
 669         /* find decoder */
 670         i_ff_codec = get_ff_codec( id->f_src.i_codec );
 671         if( i_ff_codec == 0 )
 672         {
 673             msg_Err( p_stream, "cannot find decoder id" );
 674             return VLC_EGENERIC;
 675         }
 676
 677         id->ff_dec = avcodec_find_decoder( i_ff_codec );
 678         if( !id->ff_dec )
 679         {
 680             msg_Err( p_stream, "cannot find decoder (avcodec)" );
 681             return VLC_EGENERIC;
 682         }
 683
 684         id->ff_dec_c = avcodec_alloc_context();
 685         id->ff_dec_c->sample_rate = id->f_src.audio.i_rate;
 686         id->ff_dec_c->channels    = id->f_src.audio.i_channels;
 687         id->ff_dec_c->block_align = id->f_src.audio.i_blockalign;
 688         id->ff_dec_c->bit_rate    = id->f_src.i_bitrate;
 689
 690         id->ff_dec_c->extradata_size = id->f_src.i_extra;
 691         id->ff_dec_c->extradata      = id->f_src.p_extra;
 692         if( avcodec_open( id->ff_dec_c, id->ff_dec ) )
 693         {
 694             msg_Err( p_stream, "cannot open decoder" );
 695             return VLC_EGENERIC;
 696         }
 697     }
 698
 699     id->i_buffer     = 2 * AVCODEC_MAX_AUDIO_FRAME_SIZE;
 700     id->i_buffer_pos = 0;
 701     id->p_buffer     = malloc( id->i_buffer );
 702
 703     /* Sanity check for audio channels */
 704     id->f_dst.audio.i_channels = __MIN( id->f_dst.audio.i_channels, id->f_src.audio.i_channels );
 705
 706     /* find encoder */
 707     id->p_encoder = vlc_object_create( p_stream, VLC_OBJECT_ENCODER );
 708
 709     /* Initialization of encoder format structures */
 710     es_format_Init( &id->p_encoder->fmt_in, AUDIO_ES, AOUT_FMT_S16_NE );
 711     id->p_encoder->fmt_in.audio.i_format = AOUT_FMT_S16_NE;
 712     id->p_encoder->fmt_in.audio.i_rate = id->f_dst.audio.i_rate;
 713     id->p_encoder->fmt_in.audio.i_physical_channels =
 714         id->p_encoder->fmt_in.audio.i_original_channels =
 715             pi_channels_maps[id->f_dst.audio.i_channels];
 716     id->p_encoder->fmt_in.audio.i_channels = id->f_dst.audio.i_channels;
 717
 718     id->p_encoder->fmt_out = id->p_encoder->fmt_in;
 719     id->p_encoder->fmt_out.i_codec = id->f_dst.i_codec;
 720     id->p_encoder->fmt_out.i_bitrate = id->f_dst.i_bitrate;
 721
 722     id->p_encoder->p_module =
 723         module_Need( id->p_encoder, "encoder", NULL );
 724     if( !id->p_encoder->p_module )
 725     {
 726         vlc_object_destroy( id->p_encoder );
 727         msg_Err( p_stream, "cannot open encoder" );
 728         return VLC_EGENERIC;
 729     }
 730
 731     id->b_enc_inited = VLC_FALSE;
 732
 733     id->f_dst.i_extra = id->p_encoder->fmt_out.i_extra;
 734     id->f_dst.p_extra = id->p_encoder->fmt_out.p_extra;
 735
 736     /* Hack for mp3 transcoding support */
 737     if( id->f_dst.i_codec == VLC_FOURCC( 'm','p','3',' ' ) )
 738     {
 739         id->f_dst.i_codec = VLC_FOURCC( 'm','p','g','a' );
 740     }
 741
 742     return VLC_SUCCESS;
 743 }
 744
 745 static void transcode_audio_ffmpeg_close( sout_stream_t *p_stream,
 746                                           sout_stream_id_t *id )
 747 {
 748     if( id->ff_dec )
 749     {
 750         avcodec_close( id->ff_dec_c );
 751         free( id->ff_dec_c );
 752     }
 753
 754     module_Unneed( id->p_encoder, id->p_encoder->p_module );
 755     vlc_object_destroy( id->p_encoder );
 756
 757     free( id->p_buffer );
 758 }
 759
 760 static int transcode_audio_ffmpeg_process( sout_stream_t *p_stream,
 761                                            sout_stream_id_t *id,
 762                                            sout_buffer_t *in,
 763                                            sout_buffer_t **out )
 764 {
 765     aout_buffer_t aout_buf;
 766     block_t *p_block;
 767     int i_buffer = in->i_size;
 768     char *p_buffer = in->p_buffer;
 769     id->i_dts = in->i_dts;
 770     *out = NULL;
 771
 772     while( i_buffer )
 773     {
 774         id->i_buffer_pos = 0;
 775
 776         /* decode as much data as possible */
 777         if( id->ff_dec )
 778         {
 779             int i_used;
 780
 781             i_used = avcodec_decode_audio( id->ff_dec_c,
 782                          (int16_t*)id->p_buffer, &id->i_buffer_pos,
 783                          p_buffer, i_buffer );
 784
 785 #if 0
 786             msg_Warn( p_stream, "avcodec_decode_audio: %d used on %d",
 787                       i_used, i_buffer );
 788 #endif
 789             if( i_used < 0 )
 790             {
 791                 msg_Warn( p_stream, "error audio decoding");
 792                 break;
 793             }
 794
 795             i_buffer -= i_used;
 796             p_buffer += i_used;
 797         }
 798         else
 799         {
 800             int16_t *sout = (int16_t*)id->p_buffer;
 801
 802             if( id->f_src.i_codec == VLC_FOURCC( 's', '8', ' ', ' ' ) ||
 803                 id->f_src.i_codec == VLC_FOURCC( 'u', '8', ' ', ' ' ) )
 804             {
 805                 int8_t *sin = (int8_t*)p_buffer;
 806                 int i_used = __MIN( id->i_buffer/2, i_buffer );
 807                 int i_samples = i_used;
 808
 809                 if( id->f_src.i_codec == VLC_FOURCC( 's', '8', ' ', ' ' ) )
 810                     while( i_samples > 0 )
 811                     {
 812                         *sout++ = ( *sin++ ) << 8;
 813                         i_samples--;
 814                     }
 815                 else
 816                     while( i_samples > 0 )
 817                     {
 818                         *sout++ = ( *sin++ - 128 ) << 8;
 819                         i_samples--;
 820                     }
 821
 822                 i_buffer -= i_used;
 823                 p_buffer += i_used;
 824                 id->i_buffer_pos = i_used * 2;
 825             }
 826             else if( id->f_src.i_codec == VLC_FOURCC( 's', '1', '6', 'l' ) ||
 827                      id->f_src.i_codec == VLC_FOURCC( 's', '1', '6', 'b' ) )
 828             {
 829                 int16_t *sin = (int16_t*)p_buffer;
 830                 int i_used = __MIN( id->i_buffer, i_buffer );
 831                 int i_samples = i_used / 2;
 832                 int b_invert_indianness;
 833
 834                 if( id->f_src.i_codec == VLC_FOURCC( 's', '1', '6', 'l' ) )
 835 #ifdef WORDS_BIGENDIAN
 836                     b_invert_indianness = 1;
 837 #else
 838                     b_invert_indianness = 0;
 839 #endif
 840                 else
 841 #ifdef WORDS_BIGENDIAN
 842                     b_invert_indianness = 0;
 843 #else
 844                     b_invert_indianness = 1;
 845 #endif
 846
 847                 if( b_invert_indianness )
 848                 {
 849                     while( i_samples > 0 )
 850                     {
 851                         uint8_t tmp[2];
 852
 853                         tmp[1] = *sin++;
 854                         tmp[0] = *sin++;
 855                         *sout++ = *(int16_t*)tmp;
 856                         i_samples--;
 857                     }
 858                 }
 859                 else
 860                 {
 861                     memcpy( sout, sin, i_used );
 862                     sout += i_samples;
 863                 }
 864
 865                 i_buffer -= i_used;
 866                 p_buffer += i_used;
 867                 id->i_buffer_pos = i_used;
 868             }
 869         }
 870
 871         if( id->i_buffer_pos == 0 ) continue;
 872
 873         /* Encode as much data as possible */
 874         if( !id->b_enc_inited && id->p_encoder->pf_header )
 875         {
 876             p_block = id->p_encoder->pf_header( id->p_encoder );
 877             while( p_block )
 878             {
 879                 sout_buffer_t *p_out;
 880                 block_t *p_prev_block = p_block;
 881
 882                 p_out = sout_BufferNew( p_stream->p_sout, p_block->i_buffer );
 883                 memcpy( p_out->p_buffer, p_block->p_buffer, p_block->i_buffer);
 884                 p_out->i_dts = p_out->i_pts = in->i_dts;
 885                 p_out->i_length = 0;
 886                 sout_BufferChain( out, p_out );
 887
 888                 p_block = p_block->p_next;
 889                 block_Release( p_prev_block );
 890             }
 891
 892             id->b_enc_inited = VLC_TRUE;
 893         }
 894
 895         aout_buf.p_buffer = id->p_buffer;
 896         aout_buf.i_nb_bytes = id->i_buffer_pos;
 897         aout_buf.i_nb_samples = id->i_buffer_pos / 2 / id->f_src.audio.i_channels;
 898         aout_buf.start_date = id->i_dts;
 899         aout_buf.end_date = id->i_dts;
 900
 901         id->i_dts += ( I64C(1000000) * id->i_buffer_pos / 2 /
 902             id->f_src.audio.i_channels / id->f_src.audio.i_rate );
 903
 904         if( id->f_src.audio.i_channels !=
 905             id->p_encoder->fmt_in.audio.i_channels )
 906         {
 907             unsigned int i;
 908             int j;
 909
 910             /* This is for liba52 which is what ffmpeg uses to decode ac3 */
 911             static const int translation[7][6] =
 912             {{ 0, 0, 0, 0, 0, 0 },      /* 0 channels (rarely used) */
 913              { 0, 0, 0, 0, 0, 0 },       /* 1 ch */
 914              { 0, 1, 0, 0, 0, 0 },       /* 2 */
 915              { 1, 2, 0, 0, 0, 0 },       /* 3 */
 916              { 1, 3, 2, 0, 0, 0 },       /* 4 */
 917              { 1, 3, 4, 2, 0, 0 },       /* 5 */
 918              { 1, 3, 4, 5, 2, 0 }};      /* 6 */
 919
 920             /* dumb downmixing */
 921             for( i = 0; i < aout_buf.i_nb_samples; i++ )
 922             {
 923                 uint16_t *p_buffer = (uint16_t *)aout_buf.p_buffer;
 924                 for( j = 0 ; j < id->p_encoder->fmt_in.audio.i_channels; j++ )
 925                 {
 926                     p_buffer[i*id->p_encoder->fmt_in.audio.i_channels+j] =
 927                         p_buffer[i*id->f_src.audio.i_channels+
 928                                  translation[id->f_src.audio.i_channels][j]];
 929                 }
 930             }
 931             aout_buf.i_nb_bytes = i*id->p_encoder->fmt_in.audio.i_channels * 2;
 932         }
 933
 934         p_block = id->p_encoder->pf_encode_audio( id->p_encoder, &aout_buf );
 935         while( p_block )
 936         {
 937             sout_buffer_t *p_out;
 938             block_t *p_prev_block = p_block;
 939
 940             p_out = sout_BufferNew( p_stream->p_sout, p_block->i_buffer );
 941             memcpy( p_out->p_buffer, p_block->p_buffer, p_block->i_buffer);
 942             p_out->i_dts = p_block->i_dts;
 943             p_out->i_pts = p_block->i_pts;
 944             p_out->i_length = p_block->i_length;
 945             sout_BufferChain( out, p_out );
 946
 947             p_block = p_block->p_next;
 948             block_Release( p_prev_block );
 949         }
 950     }
 951
 952     return VLC_SUCCESS;
 953 }
 954
 955
 956 /*
 957  * video
 958  */
 959 static int transcode_video_ffmpeg_new( sout_stream_t *p_stream,
 960                                        sout_stream_id_t *id )
 961 {
 962     sout_stream_sys_t   *p_sys = p_stream->p_sys;
 963
 964     int i_ff_codec;
 965
 966     /* Open decoder */
 967     if( id->f_src.i_codec == VLC_FOURCC( 'I', '4', '2', '0' ) ||
 968         id->f_src.i_codec == VLC_FOURCC( 'I', '4', '2', '2' ) ||
 969         id->f_src.i_codec == VLC_FOURCC( 'I', '4', '4', '4' ) ||
 970         id->f_src.i_codec == VLC_FOURCC( 'Y', 'V', '1', '2' ) ||
 971         id->f_src.i_codec == VLC_FOURCC( 'Y', 'U', 'Y', '2' ) ||
 972         id->f_src.i_codec == VLC_FOURCC( 'I', 'Y', 'U', 'V' ) ||
 973         id->f_src.i_codec == VLC_FOURCC( 'R', 'V', '1', '5' ) ||
 974         id->f_src.i_codec == VLC_FOURCC( 'R', 'V', '1', '6' ) ||
 975         id->f_src.i_codec == VLC_FOURCC( 'R', 'V', '2', '4' ) ||
 976         id->f_src.i_codec == VLC_FOURCC( 'R', 'V', '3', '2' ) ||
 977         id->f_src.i_codec == VLC_FOURCC( 'G', 'R', 'E', 'Y' ) )
 978     {
 979         id->ff_dec              = NULL;
 980         id->ff_dec_c            = avcodec_alloc_context();
 981         id->ff_dec_c->width     = id->f_src.video.i_width;
 982         id->ff_dec_c->height    = id->f_src.video.i_height;
 983         id->ff_dec_c->pix_fmt   = get_ff_chroma( id->f_src.i_codec );
 984     }
 985     else
 986     {
 987         /* find decoder */
 988         i_ff_codec = get_ff_codec( id->f_src.i_codec );
 989         if( i_ff_codec == 0 )
 990         {
 991             msg_Err( p_stream, "cannot find decoder" );
 992             return VLC_EGENERIC;
 993         }
 994
 995         id->ff_dec = avcodec_find_decoder( i_ff_codec );
 996         if( !id->ff_dec )
 997         {
 998             msg_Err( p_stream, "cannot find decoder" );
 999             return VLC_EGENERIC;
1000         }
1001
1002         id->ff_dec_c = avcodec_alloc_context();
1003         id->ff_dec_c->width         = id->f_src.video.i_width;
1004         id->ff_dec_c->height        = id->f_src.video.i_height;
1005         /* id->ff_dec_c->bit_rate      = id->f_src.i_bitrate; */
1006         id->ff_dec_c->extradata_size= id->f_src.i_extra;
1007         id->ff_dec_c->extradata     = id->f_src.p_extra;
1008         id->ff_dec_c->workaround_bugs = FF_BUG_AUTODETECT;
1009         id->ff_dec_c->error_resilience= -1;
1010         id->ff_dec_c->get_buffer    = transcode_video_ffmpeg_getframebuf;
1011         id->ff_dec_c->opaque        = p_sys;
1012
1013         if( avcodec_open( id->ff_dec_c, id->ff_dec ) < 0 )
1014         {
1015             msg_Err( p_stream, "cannot open decoder" );
1016             return VLC_EGENERIC;
1017         }
1018
1019         if( i_ff_codec == CODEC_ID_MPEG4 && id->ff_dec_c->extradata_size > 0 )
1020         {
1021             int b_gotpicture;
1022             AVFrame frame;
1023             uint8_t *p_vol = malloc( id->ff_dec_c->extradata_size +
1024                                      FF_INPUT_BUFFER_PADDING_SIZE );
1025
1026             memcpy( p_vol, id->ff_dec_c->extradata,
1027                     id->ff_dec_c->extradata_size );
1028             memset( p_vol + id->ff_dec_c->extradata_size, 0,
1029                     FF_INPUT_BUFFER_PADDING_SIZE );
1030
1031             avcodec_decode_video( id->ff_dec_c, &frame, &b_gotpicture,
1032                                   id->ff_dec_c->extradata,
1033                                   id->ff_dec_c->extradata_size );
1034             free( p_vol );
1035         }
1036     }
1037
1038     /* Open encoder */
1039     id->p_encoder = vlc_object_create( p_stream, VLC_OBJECT_ENCODER );
1040
1041     /* Initialization of encoder format structures */
1042     es_format_Init( &id->p_encoder->fmt_in,
1043                     id->f_src.i_cat, get_vlc_chroma(id->ff_dec_c->pix_fmt) );
1044
1045     /* The dimensions will be set properly later on.
1046      * Just put sensible values so we can test if there is an encoder. */
1047     id->p_encoder->fmt_in.video.i_width = 16;
1048     id->p_encoder->fmt_in.video.i_height = 16;
1049
1050     id->p_encoder->fmt_in.video.i_frame_rate = 25; /* FIXME as it break mpeg */
1051     id->p_encoder->fmt_in.video.i_frame_rate_base= 1;
1052     if( id->ff_dec )
1053     {
1054         id->p_encoder->fmt_in.video.i_frame_rate = id->ff_dec_c->frame_rate;
1055 #if LIBAVCODEC_BUILD >= 4662
1056         id->p_encoder->fmt_in.video.i_frame_rate_base =
1057             id->ff_dec_c->frame_rate_base;
1058 #endif
1059
1060 #if LIBAVCODEC_BUILD >= 4687
1061         if( id->ff_dec_c->height )
1062         id->p_encoder->fmt_in.video.i_aspect = VOUT_ASPECT_FACTOR *
1063             ( av_q2d(id->ff_dec_c->sample_aspect_ratio) *
1064               id->ff_dec_c->width / id->ff_dec_c->height );
1065 #else
1066         id->p_encoder->fmt_in.video.i_aspect = VOUT_ASPECT_FACTOR *
1067             id->ff_dec_c->aspect_ratio;
1068 #endif
1069     }
1070
1071     /* Check whether a particular aspect ratio was requested */
1072     if( id->f_src.video.i_aspect )
1073     {
1074         id->p_encoder->fmt_in.video.i_aspect = id->f_src.video.i_aspect;
1075         id->f_dst.video.i_aspect = id->f_src.video.i_aspect;
1076     }
1077
1078     id->p_encoder->fmt_out = id->p_encoder->fmt_in;
1079     id->p_encoder->fmt_out.i_codec = id->f_dst.i_codec;
1080     id->p_encoder->fmt_out.i_bitrate = id->f_dst.i_bitrate;
1081
1082     id->p_encoder->i_vtolerance = p_sys->i_vtolerance;
1083     id->p_encoder->i_key_int = p_sys->i_key_int;
1084     id->p_encoder->i_b_frames = p_sys->i_b_frames;
1085     id->p_encoder->i_qmin = p_sys->i_qmin;
1086     id->p_encoder->i_qmax = p_sys->i_qmax;
1087     id->p_encoder->i_hq = p_sys->i_hq;
1088     id->p_encoder->b_strict_rc = p_sys->b_strict_rc;
1089     id->p_encoder->b_pre_me = p_sys->b_pre_me;
1090     id->p_encoder->b_hurry_up = p_sys->b_hurry_up;
1091
1092     id->p_ff_pic         = avcodec_alloc_frame();
1093     id->p_ff_pic_tmp0    = NULL;
1094     id->p_ff_pic_tmp1    = NULL;
1095     id->p_ff_pic_tmp2    = NULL;
1096     id->p_vresample      = NULL;
1097
1098     id->p_encoder->p_module =
1099         module_Need( id->p_encoder, "encoder", NULL );
1100
1101     if( !id->p_encoder->p_module )
1102     {
1103         vlc_object_destroy( id->p_encoder );
1104         msg_Err( p_stream, "cannot find encoder" );
1105         return VLC_EGENERIC;
1106     }
1107
1108     /* Close the encoder.
1109      * We'll open it only when we have the first frame */
1110     module_Unneed( id->p_encoder, id->p_encoder->p_module );
1111     id->p_encoder->p_module = NULL;
1112
1113     id->b_enc_inited = VLC_FALSE;
1114
1115     return VLC_SUCCESS;
1116 }
1117
1118 static void transcode_video_ffmpeg_close ( sout_stream_t *p_stream,
1119                                            sout_stream_id_t *id )
1120 {
1121     /* Close decoder */
1122     if( id->ff_dec )
1123     {
1124         avcodec_close( id->ff_dec_c );
1125         free( id->ff_dec_c );
1126     }
1127
1128     /* Close encoder */
1129     if( id->p_encoder->p_module )
1130         module_Unneed( id->p_encoder, id->p_encoder->p_module );
1131     vlc_object_destroy( id->p_encoder );
1132
1133     /* Misc cleanup */
1134     if( id->p_ff_pic)
1135     {
1136         free( id->p_ff_pic );
1137     }
1138
1139     if( id->p_ff_pic_tmp0 )
1140     {
1141         free( id->p_ff_pic_tmp0->data[0] );
1142         free( id->p_ff_pic_tmp0 );
1143     }
1144     if( id->p_ff_pic_tmp1)
1145     {
1146         free( id->p_ff_pic_tmp1->data[0] );
1147         free( id->p_ff_pic_tmp1 );
1148     }
1149     if( id->p_ff_pic_tmp2)
1150     {
1151         free( id->p_ff_pic_tmp2->data[0] );
1152         free( id->p_ff_pic_tmp2 );
1153     }
1154     if( id->p_vresample )
1155     {
1156         img_resample_close( id->p_vresample );
1157     }
1158 }
1159
1160 static int transcode_video_ffmpeg_process( sout_stream_t *p_stream,
1161                sout_stream_id_t *id, sout_buffer_t *in, sout_buffer_t **out )
1162 {
1163     sout_stream_sys_t   *p_sys = p_stream->p_sys;
1164     int     i_used;
1165     int     b_gotpicture;
1166     AVFrame *frame;
1167
1168     int     i_data;
1169     uint8_t *p_data;
1170
1171     *out = NULL;
1172
1173     i_data = in->i_size;
1174     p_data = in->p_buffer;
1175
1176     for( ;; )
1177     {
1178         block_t *p_block;
1179         picture_t pic;
1180         int i_plane;
1181
1182         /* decode frame */
1183         frame = id->p_ff_pic;
1184         p_sys->i_input_pts = in->i_pts;
1185         if( id->ff_dec )
1186         {
1187             i_used = avcodec_decode_video( id->ff_dec_c, frame,
1188                                            &b_gotpicture,
1189                                            p_data, i_data );
1190         }
1191         else
1192         {
1193             /* raw video */
1194             avpicture_fill( (AVPicture*)frame, p_data,
1195                             id->ff_dec_c->pix_fmt,
1196                             id->ff_dec_c->width, id->ff_dec_c->height );
1197             i_used = i_data;
1198             b_gotpicture = 1;
1199
1200             /* Set PTS */
1201             frame->pts = p_sys->i_input_pts;
1202         }
1203
1204         if( i_used < 0 )
1205         {
1206             msg_Warn( p_stream, "error");
1207             return VLC_EGENERIC;
1208         }
1209         i_data -= i_used;
1210         p_data += i_used;
1211
1212         if( !b_gotpicture )
1213         {
1214             return VLC_SUCCESS;
1215         }
1216
1217         /* Get the pts of the decoded frame if any, otherwise keep the
1218          * interpolated one */
1219         if( frame->pts > 0 )
1220         {
1221             p_sys->i_output_pts = frame->pts;
1222         }
1223
1224         if( !id->b_enc_inited )
1225         {
1226             /* Hack because of the copy packetizer which can fail to detect the
1227              * proper size (which forces us to wait until the 1st frame
1228              * is decoded) */
1229             int i_width = id->ff_dec_c->width - p_sys->i_crop_left -
1230                           p_sys->i_crop_right;
1231             int i_height = id->ff_dec_c->height - p_sys->i_crop_top -
1232                            p_sys->i_crop_bottom;
1233
1234             if( id->f_dst.video.i_width <= 0 && id->f_dst.video.i_height <= 0
1235                 && p_sys->f_scale )
1236             {
1237                 /* Apply the scaling */
1238                 id->f_dst.video.i_width = i_width * p_sys->f_scale;
1239                 id->f_dst.video.i_height = i_height * p_sys->f_scale;
1240             }
1241             else if( id->f_dst.video.i_width > 0 &&
1242                      id->f_dst.video.i_height <= 0 )
1243             {
1244                 id->f_dst.video.i_height =
1245                     id->f_dst.video.i_width / (double)i_width * i_height;
1246             }
1247             else if( id->f_dst.video.i_width <= 0 &&
1248                      id->f_dst.video.i_height > 0 )
1249             {
1250                 id->f_dst.video.i_width =
1251                     id->f_dst.video.i_height / (double)i_height * i_width;
1252             }
1253
1254             id->p_encoder->fmt_in.video.i_width =
1255               id->p_encoder->fmt_out.video.i_width =
1256                 id->f_dst.video.i_width;
1257             id->p_encoder->fmt_in.video.i_height =
1258               id->p_encoder->fmt_out.video.i_height =
1259                 id->f_dst.video.i_height;
1260
1261             id->p_encoder->fmt_out.i_extra = 0;
1262             id->p_encoder->fmt_out.p_extra = NULL;
1263
1264             id->p_encoder->p_module =
1265                 module_Need( id->p_encoder, "encoder", NULL );
1266             if( !id->p_encoder->p_module )
1267             {
1268                 vlc_object_destroy( id->p_encoder );
1269                 msg_Err( p_stream, "cannot find encoder" );
1270                 id->b_transcode = VLC_FALSE;
1271                 return VLC_EGENERIC;
1272             }
1273
1274             id->f_dst.i_extra = id->p_encoder->fmt_out.i_extra;
1275             id->f_dst.p_extra = id->p_encoder->fmt_out.p_extra;
1276
1277             /* Hack for mp2v/mp1v transcoding support */
1278             if( id->f_dst.i_codec == VLC_FOURCC( 'm','p','1','v' ) ||
1279                 id->f_dst.i_codec == VLC_FOURCC( 'm','p','2','v' ) )
1280             {
1281                 id->f_dst.i_codec = VLC_FOURCC( 'm','p','g','v' );
1282             }
1283
1284             if( !( id->id =
1285                      p_stream->p_sys->p_out->pf_add( p_stream->p_sys->p_out,
1286                                                      &id->f_dst ) ) )
1287             {
1288                 msg_Err( p_stream, "cannot add this stream" );
1289                 transcode_video_ffmpeg_close( p_stream, id );
1290                 id->b_transcode = VLC_FALSE;
1291                 return VLC_EGENERIC;
1292             }
1293
1294             if( id->p_encoder->pf_header )
1295             {
1296                 p_block = id->p_encoder->pf_header( id->p_encoder );
1297                 while( p_block )
1298                 {
1299                     sout_buffer_t *p_out;
1300                     block_t *p_prev_block = p_block;
1301
1302                     p_out = sout_BufferNew( p_stream->p_sout,
1303                                             p_block->i_buffer );
1304                     memcpy( p_out->p_buffer, p_block->p_buffer,
1305                             p_block->i_buffer);
1306                     p_out->i_dts = p_out->i_pts = in->i_dts;
1307                     p_out->i_length = 0;
1308                     sout_BufferChain( out, p_out );
1309
1310                     p_block = p_block->p_next;
1311                     block_Release( p_prev_block );
1312                 }
1313             }
1314
1315             id->i_inter_pixfmt =
1316                 get_ff_chroma( id->p_encoder->fmt_in.i_codec );
1317
1318             id->b_enc_inited = VLC_TRUE;
1319         }
1320
1321         /* deinterlace */
1322         if( p_stream->p_sys->b_deinterlace )
1323         {
1324             if( id->p_ff_pic_tmp0 == NULL )
1325             {
1326                 int     i_size;
1327                 uint8_t *buf;
1328                 id->p_ff_pic_tmp0 = avcodec_alloc_frame();
1329                 i_size = avpicture_get_size( id->ff_dec_c->pix_fmt,
1330                                              id->ff_dec_c->width, id->ff_dec_c->height );
1331
1332                 buf = malloc( i_size );
1333
1334                 avpicture_fill( (AVPicture*)id->p_ff_pic_tmp0, buf,
1335                                 id->i_inter_pixfmt,
1336                                 id->ff_dec_c->width, id->ff_dec_c->height );
1337             }
1338
1339             avpicture_deinterlace( (AVPicture*)id->p_ff_pic_tmp0, (AVPicture*)frame,
1340                                    id->ff_dec_c->pix_fmt,
1341                                    id->ff_dec_c->width, id->ff_dec_c->height );
1342
1343             frame = id->p_ff_pic_tmp0;
1344         }
1345
1346         /* convert pix format */
1347         if( id->ff_dec_c->pix_fmt != id->i_inter_pixfmt )
1348         {
1349             if( id->p_ff_pic_tmp1 == NULL )
1350             {
1351                 int     i_size;
1352                 uint8_t *buf;
1353                 id->p_ff_pic_tmp1 = avcodec_alloc_frame();
1354                 i_size = avpicture_get_size( id->i_inter_pixfmt,
1355                                              id->ff_dec_c->width,
1356                                              id->ff_dec_c->height );
1357
1358                 buf = malloc( i_size );
1359
1360                 avpicture_fill( (AVPicture*)id->p_ff_pic_tmp1, buf,
1361                                 id->i_inter_pixfmt,
1362                                 id->ff_dec_c->width, id->ff_dec_c->height );
1363             }
1364
1365             img_convert( (AVPicture*)id->p_ff_pic_tmp1, id->i_inter_pixfmt,
1366                          (AVPicture*)frame, id->ff_dec_c->pix_fmt,
1367                          id->ff_dec_c->width, id->ff_dec_c->height );
1368
1369             frame = id->p_ff_pic_tmp1;
1370         }
1371
1372         /* convert size and crop */
1373         if( id->ff_dec_c->width  != id->f_dst.video.i_width ||
1374             id->ff_dec_c->height != id->f_dst.video.i_height ||
1375             p_sys->i_crop_top > 0 || p_sys->i_crop_bottom > 0 ||
1376             p_sys->i_crop_left > 0 || p_sys->i_crop_right > 0 )
1377         {
1378             if( id->p_ff_pic_tmp2 == NULL )
1379             {
1380                 int     i_size;
1381                 uint8_t *buf;
1382                 id->p_ff_pic_tmp2 = avcodec_alloc_frame();
1383                 i_size = avpicture_get_size( id->i_inter_pixfmt,
1384                                              id->f_dst.video.i_width,
1385                                              id->f_dst.video.i_height );
1386
1387                 buf = malloc( i_size );
1388
1389                 avpicture_fill( (AVPicture*)id->p_ff_pic_tmp2, buf,
1390                                 id->i_inter_pixfmt,
1391                                 id->f_dst.video.i_width, id->f_dst.video.i_height );
1392
1393                 id->p_vresample =
1394                     img_resample_full_init( id->f_dst.video.i_width,
1395                                             id->f_dst.video.i_height,
1396                                             id->ff_dec_c->width, id->ff_dec_c->height,
1397                                             p_stream->p_sys->i_crop_top,
1398                                             p_stream->p_sys->i_crop_bottom,
1399                                             p_stream->p_sys->i_crop_left,
1400                                             p_stream->p_sys->i_crop_right );
1401             }
1402
1403             img_resample( id->p_vresample, (AVPicture*)id->p_ff_pic_tmp2,
1404                           (AVPicture*)frame );
1405
1406             frame = id->p_ff_pic_tmp2;
1407         }
1408
1409         /* Encoding */
1410         vout_InitPicture( VLC_OBJECT(p_stream), &pic,
1411                           id->p_encoder->fmt_in.i_codec,
1412                           id->f_dst.video.i_width, id->f_dst.video.i_height,
1413                           id->f_dst.video.i_width * VOUT_ASPECT_FACTOR /
1414                           id->f_dst.video.i_height );
1415
1416         for( i_plane = 0; i_plane < pic.i_planes; i_plane++ )
1417         {
1418             pic.p[i_plane].p_pixels = frame->data[i_plane];
1419             pic.p[i_plane].i_pitch = frame->linesize[i_plane];
1420         }
1421
1422         /* Set the pts of the frame being encoded */
1423         pic.date = p_sys->i_output_pts;
1424
1425         pic.b_progressive = 1; /* ffmpeg doesn't support interlaced encoding */
1426         pic.i_nb_fields = frame->repeat_pict;
1427 #if LIBAVCODEC_BUILD >= 4684
1428         pic.b_top_field_first = frame->top_field_first;
1429 #endif
1430
1431         /* Interpolate the next PTS
1432          * (needed by the mpeg video packetizer which can send pts <= 0 ) */
1433         if( id->ff_dec_c && id->ff_dec_c->frame_rate > 0 )
1434         {
1435             p_sys->i_output_pts += I64C(1000000) * (2 + frame->repeat_pict) *
1436               id->ff_dec_c->frame_rate_base / (2 * id->ff_dec_c->frame_rate);
1437         }
1438
1439         p_block = id->p_encoder->pf_encode_video( id->p_encoder, &pic );
1440         while( p_block )
1441         {
1442             sout_buffer_t *p_out;
1443             block_t *p_prev_block = p_block;
1444
1445             p_out = sout_BufferNew( p_stream->p_sout, p_block->i_buffer );
1446             memcpy( p_out->p_buffer, p_block->p_buffer, p_block->i_buffer);
1447             p_out->i_dts = p_block->i_dts;
1448             p_out->i_pts = p_block->i_pts;
1449             p_out->i_length = p_block->i_length;
1450             sout_BufferChain( out, p_out );
1451
1452             p_block = p_block->p_next;
1453             block_Release( p_prev_block );
1454         }
1455
1456         if( i_data <= 0 )
1457         {
1458             return VLC_SUCCESS;
1459         }
1460     }
1461
1462     return VLC_SUCCESS;
1463 }
1464
1465 /*****************************************************************************
1466  * transcode_video_ffmpeg_getframebuf:
1467  *
1468  * Callback used by ffmpeg to get a frame buffer.
1469  * We use it to get the right PTS for each decoded picture.
1470  *****************************************************************************/
1471 static int transcode_video_ffmpeg_getframebuf(struct AVCodecContext *p_context,
1472                                               AVFrame *p_frame)
1473 {
1474     sout_stream_sys_t *p_sys = (sout_stream_sys_t *)p_context->opaque;
1475
1476     /* Set PTS */
1477     p_frame->pts = p_sys->i_input_pts;
1478
1479     return avcodec_default_get_buffer( p_context, p_frame );
1480 }