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 1.49 2003/11/05 18:59:01 gbazin 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 *, sout_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     int             i_width;
  98     int             i_height;
  99     int             i_b_frames;
 100     int             i_key_int;
 101     int             i_qmin;
 102     int             i_qmax;
 103     vlc_bool_t      i_hq;
 104     vlc_bool_t      b_deinterlace;
 105
 106     int             i_crop_top;
 107     int             i_crop_bottom;
 108     int             i_crop_right;
 109     int             i_crop_left;
 110
 111     mtime_t         i_input_pts;
 112     mtime_t         i_output_pts;
 113 };
 114
 115 /*****************************************************************************
 116  * Open:
 117  *****************************************************************************/
 118 static int Open( vlc_object_t *p_this )
 119 {
 120     sout_stream_t     *p_stream = (sout_stream_t*)p_this;
 121     sout_stream_sys_t *p_sys;
 122     char *codec;
 123
 124     p_sys = malloc( sizeof( sout_stream_sys_t ) );
 125     p_sys->p_out = sout_stream_new( p_stream->p_sout, p_stream->psz_next );
 126
 127     p_sys->i_acodec      = 0;
 128     p_sys->i_sample_rate = 0;
 129     p_sys->i_channels    = 0;
 130     p_sys->i_abitrate    = 0;
 131
 132     p_sys->i_vcodec     = 0;
 133     p_sys->i_vbitrate   = 0;
 134     p_sys->i_vtolerance = -1;
 135     p_sys->i_width      = 0;
 136     p_sys->i_height     = 0;
 137     p_sys->i_key_int    = -1;
 138     p_sys->i_b_frames   = 0;
 139     p_sys->i_qmin       = 2;
 140     p_sys->i_qmax       = 31;
 141 #if LIBAVCODEC_BUILD >= 4673
 142     p_sys->i_hq         = FF_MB_DECISION_SIMPLE;
 143 #else
 144     p_sys->i_hq         = VLC_FALSE;
 145 #endif
 146     p_sys->b_deinterlace= VLC_FALSE;
 147
 148     p_sys->i_crop_top   = 0;
 149     p_sys->i_crop_bottom= 0;
 150     p_sys->i_crop_right = 0;
 151     p_sys->i_crop_left  = 0;
 152
 153     if( ( codec = sout_cfg_find_value( p_stream->p_cfg, "acodec" ) ) )
 154     {
 155         char fcc[4] = "    ";
 156         char *val;
 157
 158         memcpy( fcc, codec, strlen( codec ) );
 159
 160         p_sys->i_acodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
 161
 162         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "samplerate" ) ) )
 163         {
 164             p_sys->i_sample_rate = atoi( val );
 165         }
 166         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "channels" ) ) )
 167         {
 168             p_sys->i_channels = atoi( val );
 169         }
 170         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "ab" ) ) )
 171         {
 172             p_sys->i_abitrate = atoi( val );
 173             if( p_sys->i_abitrate < 4000 )
 174             {
 175                 p_sys->i_abitrate *= 1000;
 176             }
 177         }
 178
 179         msg_Dbg( p_stream, "codec audio=%4.4s %dHz %d channels %dKb/s", fcc,
 180                  p_sys->i_sample_rate, p_sys->i_channels,
 181                  p_sys->i_abitrate / 1024 );
 182     }
 183
 184     if( ( codec = sout_cfg_find_value( p_stream->p_cfg, "vcodec" ) ) )
 185     {
 186         char fcc[4] = "    ";
 187         char *val;
 188
 189         memcpy( fcc, codec, strlen( codec ) );
 190
 191         p_sys->i_vcodec = VLC_FOURCC( fcc[0], fcc[1], fcc[2], fcc[3] );
 192
 193         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "width" ) ) )
 194         {
 195             p_sys->i_width = atoi( val );
 196         }
 197         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "height" ) ) )
 198         {
 199             p_sys->i_height = atoi( val );
 200         }
 201         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "vb" ) ) )
 202         {
 203             p_sys->i_vbitrate = atoi( val );
 204             if( p_sys->i_vbitrate < 16000 )
 205             {
 206                 p_sys->i_vbitrate *= 1000;
 207             }
 208         }
 209         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "vt" ) ) )
 210         {
 211             p_sys->i_vtolerance = atoi( val );
 212         }
 213         if( sout_cfg_find( p_stream->p_cfg, "deinterlace" ) )
 214         {
 215             p_sys->b_deinterlace = VLC_TRUE;
 216         }
 217         /* crop */
 218         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "croptop" ) ) )
 219         {
 220             p_sys->i_crop_top = atoi( val );
 221         }
 222         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "cropbottom" ) ) )
 223         {
 224             p_sys->i_crop_bottom = atoi( val );
 225         }
 226         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "cropleft" ) ) )
 227         {
 228             p_sys->i_crop_left = atoi( val );
 229         }
 230         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "cropright" ) ) )
 231         {
 232             p_sys->i_crop_right = atoi( val );
 233         }
 234         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "keyint" ) ) )
 235         {
 236             p_sys->i_key_int    = atoi( val );
 237         }
 238         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "bframes" ) ) )
 239         {
 240             p_sys->i_b_frames   = atoi( val );
 241         }
 242 #if LIBAVCODEC_BUILD >= 4673
 243         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "hq" ) ) )
 244         {
 245             if( !strcmp( val, "rd" ) )
 246             {
 247                 p_sys->i_hq = FF_MB_DECISION_RD;
 248             }
 249             else if( !strcmp( val, "bits" ) )
 250             {
 251                 p_sys->i_hq = FF_MB_DECISION_BITS;
 252             }
 253             else if( !strcmp( val, "simple" ) )
 254             {
 255                 p_sys->i_hq = FF_MB_DECISION_SIMPLE;
 256             }
 257             else
 258             {
 259                 p_sys->i_hq = FF_MB_DECISION_RD;
 260             }
 261         }
 262 #else
 263         if( sout_cfg_find( p_stream->p_cfg, "hq" ) )
 264         {
 265             p_sys->i_hq = VLC_TRUE;
 266         }
 267 #endif
 268         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "qmin" ) ) )
 269         {
 270             p_sys->i_qmin   = atoi( val );
 271         }
 272         if( ( val = sout_cfg_find_value( p_stream->p_cfg, "qmax" ) ) )
 273         {
 274             p_sys->i_qmax   = atoi( val );
 275         }
 276
 277         msg_Dbg( p_stream, "codec video=%4.4s %dx%d %dkb/s",
 278                  fcc,
 279                  p_sys->i_width, p_sys->i_height,
 280                  p_sys->i_vbitrate / 1024 );
 281     }
 282
 283     if( !p_sys->p_out )
 284     {
 285         msg_Err( p_stream, "cannot create chain" );
 286         free( p_sys );
 287         return VLC_EGENERIC;
 288     }
 289     p_stream->pf_add    = Add;
 290     p_stream->pf_del    = Del;
 291     p_stream->pf_send   = Send;
 292
 293     p_stream->p_sys     = p_sys;
 294
 295     avcodec_init();
 296     avcodec_register_all();
 297
 298     /* ffmpeg needs some padding at the end of each buffer */
 299     p_stream->p_sout->i_padding += FF_INPUT_BUFFER_PADDING_SIZE;
 300
 301     return VLC_SUCCESS;
 302 }
 303
 304 /*****************************************************************************
 305  * Close:
 306  *****************************************************************************/
 307 static void Close( vlc_object_t * p_this )
 308 {
 309     sout_stream_t       *p_stream = (sout_stream_t*)p_this;
 310     sout_stream_sys_t   *p_sys = p_stream->p_sys;
 311
 312     sout_stream_delete( p_sys->p_out );
 313     free( p_sys );
 314 }
 315
 316 struct sout_stream_id_t
 317 {
 318     vlc_fourcc_t  b_transcode;
 319     sout_format_t f_src;        /* only if transcoding */
 320     sout_format_t f_dst;        /*  "   "      " */
 321     unsigned int  i_inter_pixfmt; /* intermediary format when transcoding */
 322
 323     /* id of the out stream */
 324     void *id;
 325
 326     /* Encoder */
 327     encoder_t       *p_encoder;
 328     vlc_fourcc_t    b_enc_inited;
 329
 330     /* ffmpeg part */
 331     AVCodec         *ff_dec;
 332     AVCodecContext  *ff_dec_c;
 333
 334     mtime_t         i_dts;
 335     mtime_t         i_length;
 336
 337     int             i_buffer;
 338     int             i_buffer_pos;
 339     uint8_t         *p_buffer;
 340
 341     AVFrame         *p_ff_pic;
 342     AVFrame         *p_ff_pic_tmp0; /* to do deinterlace */
 343     AVFrame         *p_ff_pic_tmp1; /* to do pix conversion */
 344     AVFrame         *p_ff_pic_tmp2; /* to do resample */
 345
 346     ImgReSampleContext *p_vresample;
 347 };
 348
 349
 350 static sout_stream_id_t * Add( sout_stream_t *p_stream, sout_format_t *p_fmt )
 351 {
 352     sout_stream_sys_t   *p_sys = p_stream->p_sys;
 353     sout_stream_id_t    *id;
 354
 355     id = malloc( sizeof( sout_stream_id_t ) );
 356     id->i_dts = 0;
 357     id->id = NULL;
 358     id->p_encoder = NULL;
 359
 360     if( p_fmt->i_cat == AUDIO_ES && p_sys->i_acodec != 0 )
 361     {
 362         msg_Dbg( p_stream,
 363                  "creating audio transcoding from fcc=`%4.4s' to fcc=`%4.4s'",
 364                  (char*)&p_fmt->i_fourcc,
 365                  (char*)&p_sys->i_acodec );
 366
 367         /* src format */
 368         memcpy( &id->f_src, p_fmt, sizeof( sout_format_t ) );
 369
 370         /* create dst format */
 371         id->f_dst.i_cat    = AUDIO_ES;
 372         id->f_dst.i_fourcc = p_sys->i_acodec;
 373         id->f_dst.i_sample_rate = p_sys->i_sample_rate  > 0 ? p_sys->i_sample_rate : id->f_src.i_sample_rate;
 374         id->f_dst.i_channels    = p_sys->i_channels > 0 ? p_sys->i_channels : id->f_src.i_channels;
 375         id->f_dst.i_bitrate     = p_sys->i_abitrate > 0 ? p_sys->i_abitrate : 64000;
 376         id->f_dst.i_block_align = 0;
 377         id->f_dst.i_extra_data  = 0;
 378         id->f_dst.p_extra_data  = NULL;
 379
 380         /* build decoder -> filter -> encoder */
 381         if( transcode_audio_ffmpeg_new( p_stream, id ) )
 382         {
 383             msg_Err( p_stream, "cannot create audio chain" );
 384             free( id );
 385             return NULL;
 386         }
 387
 388         /* open output stream */
 389         id->id = p_sys->p_out->pf_add( p_sys->p_out, &id->f_dst );
 390         id->b_transcode = VLC_TRUE;
 391
 392         if( id->id == NULL )
 393         {
 394             free( id );
 395             return NULL;
 396         }
 397     }
 398     else if( p_fmt->i_cat == VIDEO_ES && p_sys->i_vcodec != 0 )
 399     {
 400         msg_Dbg( p_stream,
 401                  "creating video transcoding from fcc=`%4.4s' to fcc=`%4.4s'",
 402                  (char*)&p_fmt->i_fourcc,
 403                  (char*)&p_sys->i_vcodec );
 404
 405         memcpy( &id->f_src, p_fmt, sizeof( sout_format_t ) );
 406
 407         /* create dst format */
 408         id->f_dst.i_cat         = VIDEO_ES;
 409         id->f_dst.i_fourcc      = p_sys->i_vcodec;
 410         id->f_dst.i_width       = p_sys->i_width ; /* > 0 ? p_sys->i_width : id->f_src.i_width; */
 411         id->f_dst.i_height      = p_sys->i_height; /* > 0 ? p_sys->i_height: id->f_src.i_height; */
 412         id->f_dst.i_bitrate     = p_sys->i_vbitrate > 0 ? p_sys->i_vbitrate : 800*1000;
 413         id->f_dst.i_extra_data  = 0;
 414         id->f_dst.p_extra_data  = NULL;
 415
 416         /* build decoder -> filter -> encoder */
 417         if( transcode_video_ffmpeg_new( p_stream, id ) )
 418         {
 419             msg_Err( p_stream, "cannot create video chain" );
 420             free( id );
 421             return NULL;
 422         }
 423 #if 0
 424         /* open output stream */
 425         id->id = p_sys->p_out->pf_add( p_sys->p_out, &id->f_dst );
 426 #endif
 427         id->b_transcode = VLC_TRUE;
 428     }
 429     else
 430     {
 431         msg_Dbg( p_stream, "not transcoding a stream (fcc=`%4.4s')", (char*)&p_fmt->i_fourcc );
 432         id->id = p_sys->p_out->pf_add( p_sys->p_out, p_fmt );
 433         id->b_transcode = VLC_FALSE;
 434
 435         if( id->id == NULL )
 436         {
 437             free( id );
 438             return NULL;
 439         }
 440     }
 441
 442     return id;
 443 }
 444
 445 static int     Del      ( sout_stream_t *p_stream, sout_stream_id_t *id )
 446 {
 447     sout_stream_sys_t   *p_sys = p_stream->p_sys;
 448
 449     if( id->b_transcode )
 450     {
 451         if( id->f_src.i_cat == AUDIO_ES )
 452         {
 453             transcode_audio_ffmpeg_close( p_stream, id );
 454         }
 455         else if( id->f_src.i_cat == VIDEO_ES )
 456         {
 457             transcode_video_ffmpeg_close( p_stream, id );
 458         }
 459     }
 460
 461     if( id->id ) p_sys->p_out->pf_del( p_sys->p_out, id->id );
 462     free( id );
 463
 464     return VLC_SUCCESS;
 465 }
 466
 467 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
 468                  sout_buffer_t *p_buffer )
 469 {
 470     sout_stream_sys_t   *p_sys = p_stream->p_sys;
 471
 472     if( id->b_transcode )
 473     {
 474         sout_buffer_t *p_buffer_out;
 475         if( id->f_src.i_cat == AUDIO_ES )
 476         {
 477             transcode_audio_ffmpeg_process( p_stream, id, p_buffer, &p_buffer_out );
 478         }
 479         else if( id->f_src.i_cat == VIDEO_ES )
 480         {
 481             transcode_video_ffmpeg_process( p_stream, id, p_buffer, &p_buffer_out );
 482         }
 483         sout_BufferDelete( p_stream->p_sout, p_buffer );
 484
 485         if( p_buffer_out )
 486         {
 487             return p_sys->p_out->pf_send( p_sys->p_out, id->id, p_buffer_out );
 488         }
 489         return VLC_SUCCESS;
 490     }
 491     else if( id->id != NULL )
 492     {
 493         return p_sys->p_out->pf_send( p_sys->p_out, id->id, p_buffer );
 494     }
 495     else
 496     {
 497         sout_BufferDelete( p_stream->p_sout, p_buffer );
 498         return VLC_EGENERIC;
 499     }
 500 }
 501
 502 /****************************************************************************
 503  * ffmpeg decoder reencocdr part
 504  ****************************************************************************/
 505
 506 static struct
 507 {
 508     vlc_fourcc_t i_fcc;
 509     int          i_ff_codec;
 510 } fourcc_to_ff_code[] =
 511 {
 512     /* audio */
 513     { VLC_FOURCC( 'm', 'p', 'g', 'a' ), CODEC_ID_MP2 },
 514     { VLC_FOURCC( 'm', 'p', '3', ' ' ), CODEC_ID_MP3LAME },
 515     { VLC_FOURCC( 'm', 'p', '4', 'a' ), CODEC_ID_AAC },
 516     { VLC_FOURCC( 'a', '5', '2', ' ' ), CODEC_ID_AC3 },
 517     { VLC_FOURCC( 'a', 'c', '3', ' ' ), CODEC_ID_AC3 },
 518     { VLC_FOURCC( 'w', 'm', 'a', '1' ), CODEC_ID_WMAV1 },
 519     { VLC_FOURCC( 'w', 'm', 'a', '2' ), CODEC_ID_WMAV2 },
 520     { VLC_FOURCC( 'v', 'o', 'r', 'b' ), CODEC_ID_VORBIS },
 521     { VLC_FOURCC( 'a', 'l', 'a', 'w' ), CODEC_ID_PCM_ALAW },
 522
 523     /* video */
 524     { VLC_FOURCC( 'm', 'p', 'g', 'v' ), CODEC_ID_MPEG1VIDEO },
 525     { VLC_FOURCC( 'm', 'p', '1', 'v' ), CODEC_ID_MPEG1VIDEO },
 526 #if LIBAVCODEC_BUILD >= 4676
 527     { VLC_FOURCC( 'm', 'p', '2', 'v' ), CODEC_ID_MPEG2VIDEO },
 528 #endif
 529     { VLC_FOURCC( 'm', 'p', '4', 'v'),  CODEC_ID_MPEG4 },
 530     { VLC_FOURCC( 'D', 'I', 'V', '1' ), CODEC_ID_MSMPEG4V1 },
 531     { VLC_FOURCC( 'D', 'I', 'V', '2' ), CODEC_ID_MSMPEG4V2 },
 532     { VLC_FOURCC( 'D', 'I', 'V', '3' ), CODEC_ID_MSMPEG4V3 },
 533     { VLC_FOURCC( 'H', '2', '6', '3' ), CODEC_ID_H263 },
 534     { VLC_FOURCC( 'I', '2', '6', '3' ), CODEC_ID_H263I },
 535     { VLC_FOURCC( 'h', 'u', 'f', 'f' ), CODEC_ID_HUFFYUV },
 536     { VLC_FOURCC( 'W', 'M', 'V', '1' ), CODEC_ID_WMV1 },
 537     { VLC_FOURCC( 'W', 'M', 'V', '2' ), CODEC_ID_WMV2 },
 538     { VLC_FOURCC( 'M', 'J', 'P', 'G' ), CODEC_ID_MJPEG },
 539     { VLC_FOURCC( 'm', 'j', 'p', 'b' ), CODEC_ID_MJPEGB },
 540     { VLC_FOURCC( 'd', 'v', 's', 'l' ), CODEC_ID_DVVIDEO },
 541     { VLC_FOURCC( 'S', 'V', 'Q', '1' ), CODEC_ID_SVQ1 },
 542 #if LIBAVCODEC_BUILD >= 4666
 543     { VLC_FOURCC( 'S', 'V', 'Q', '3' ), CODEC_ID_SVQ3 },
 544 #endif
 545
 546     /* raw video code, only used for 'encoding' */
 547     { VLC_FOURCC( 'I', '4', '2', '0' ), CODEC_ID_RAWVIDEO },
 548     { VLC_FOURCC( 'I', '4', '2', '2' ), CODEC_ID_RAWVIDEO },
 549     { VLC_FOURCC( 'I', '4', '4', '4' ), CODEC_ID_RAWVIDEO },
 550     { VLC_FOURCC( 'R', 'V', '1', '5' ), CODEC_ID_RAWVIDEO },
 551     { VLC_FOURCC( 'R', 'V', '1', '6' ), CODEC_ID_RAWVIDEO },
 552     { VLC_FOURCC( 'R', 'V', '2', '4' ), CODEC_ID_RAWVIDEO },
 553     { VLC_FOURCC( 'R', 'V', '3', '2' ), CODEC_ID_RAWVIDEO },
 554     { VLC_FOURCC( 'Y', 'U', 'Y', '2' ), CODEC_ID_RAWVIDEO },
 555
 556     { VLC_FOURCC(   0,   0,   0,   0 ), 0 }
 557 };
 558
 559 static inline int get_ff_codec( vlc_fourcc_t i_fcc )
 560 {
 561     int i;
 562
 563     for( i = 0; fourcc_to_ff_code[i].i_fcc != 0; i++ )
 564     {
 565         if( fourcc_to_ff_code[i].i_fcc == i_fcc )
 566         {
 567             return fourcc_to_ff_code[i].i_ff_codec;
 568         }
 569     }
 570
 571     return 0;
 572 }
 573
 574 static inline int get_ff_chroma( vlc_fourcc_t i_chroma )
 575 {
 576     switch( i_chroma )
 577     {
 578         case VLC_FOURCC( 'I', '4', '2', '0' ):
 579             return PIX_FMT_YUV420P;
 580         case VLC_FOURCC( 'I', '4', '2', '2' ):
 581             return PIX_FMT_YUV422P;
 582         case VLC_FOURCC( 'I', '4', '4', '4' ):
 583             return PIX_FMT_YUV444P;
 584         case VLC_FOURCC( 'R', 'V', '1', '5' ):
 585             return PIX_FMT_RGB555;
 586         case VLC_FOURCC( 'R', 'V', '1', '6' ):
 587             return PIX_FMT_RGB565;
 588         case VLC_FOURCC( 'R', 'V', '2', '4' ):
 589             return PIX_FMT_RGB24;
 590         case VLC_FOURCC( 'R', 'V', '3', '2' ):
 591             return PIX_FMT_RGBA32;
 592         case VLC_FOURCC( 'G', 'R', 'E', 'Y' ):
 593             return PIX_FMT_GRAY8;
 594         case VLC_FOURCC( 'Y', 'U', 'Y', '2' ):
 595             return PIX_FMT_YUV422;
 596         default:
 597             return 0;
 598     }
 599 }
 600
 601 static int transcode_audio_ffmpeg_new( sout_stream_t *p_stream,
 602                                        sout_stream_id_t *id )
 603 {
 604     int i_ff_codec;
 605
 606     if( id->f_src.i_fourcc == VLC_FOURCC('s','1','6','l') ||
 607         id->f_src.i_fourcc == VLC_FOURCC('s','1','6','b') ||
 608         id->f_src.i_fourcc == VLC_FOURCC('s','8',' ',' ') ||
 609         id->f_src.i_fourcc == VLC_FOURCC('u','8',' ',' ') )
 610     {
 611         id->ff_dec = NULL;
 612
 613         id->ff_dec_c = avcodec_alloc_context();
 614         id->ff_dec_c->sample_rate = id->f_src.i_sample_rate;
 615         id->ff_dec_c->channels    = id->f_src.i_channels;
 616         id->ff_dec_c->block_align = id->f_src.i_block_align;
 617         id->ff_dec_c->bit_rate    = id->f_src.i_bitrate;
 618     }
 619     else
 620     {
 621         /* find decoder */
 622         i_ff_codec = get_ff_codec( id->f_src.i_fourcc );
 623         if( i_ff_codec == 0 )
 624         {
 625             msg_Err( p_stream, "cannot find decoder id" );
 626             return VLC_EGENERIC;
 627         }
 628
 629         id->ff_dec = avcodec_find_decoder( i_ff_codec );
 630         if( !id->ff_dec )
 631         {
 632             msg_Err( p_stream, "cannot find decoder (avcodec)" );
 633             return VLC_EGENERIC;
 634         }
 635
 636         id->ff_dec_c = avcodec_alloc_context();
 637         id->ff_dec_c->sample_rate = id->f_src.i_sample_rate;
 638         id->ff_dec_c->channels    = id->f_src.i_channels;
 639         id->ff_dec_c->block_align = id->f_src.i_block_align;
 640         id->ff_dec_c->bit_rate    = id->f_src.i_bitrate;
 641
 642         id->ff_dec_c->extradata_size = id->f_src.i_extra_data;
 643         id->ff_dec_c->extradata      = id->f_src.p_extra_data;
 644         if( avcodec_open( id->ff_dec_c, id->ff_dec ) )
 645         {
 646             msg_Err( p_stream, "cannot open decoder" );
 647             return VLC_EGENERIC;
 648         }
 649     }
 650
 651     id->i_buffer     = 2 * AVCODEC_MAX_AUDIO_FRAME_SIZE;
 652     id->i_buffer_pos = 0;
 653     id->p_buffer     = malloc( id->i_buffer );
 654
 655     /* Sanity check for audio channels */
 656     id->f_dst.i_channels = __MIN( id->f_dst.i_channels, id->f_src.i_channels );
 657
 658     /* find encoder */
 659     id->p_encoder = vlc_object_create( p_stream, VLC_OBJECT_ENCODER );
 660     id->p_encoder->i_fourcc = id->f_dst.i_fourcc;
 661     id->p_encoder->format.audio.i_format = AOUT_FMT_S16_NE;
 662     id->p_encoder->format.audio.i_rate = id->f_dst.i_sample_rate;
 663     id->p_encoder->format.audio.i_physical_channels =
 664         id->p_encoder->format.audio.i_original_channels =
 665             pi_channels_maps[id->f_dst.i_channels];
 666     id->p_encoder->i_bitrate = id->f_dst.i_bitrate;
 667     id->p_encoder->i_extra_data = 0;
 668     id->p_encoder->p_extra_data = NULL;
 669
 670     id->p_encoder->p_module =
 671         module_Need( id->p_encoder, "audio encoder", NULL );
 672     if( !id->p_encoder->p_module )
 673     {
 674         vlc_object_destroy( id->p_encoder );
 675         msg_Err( p_stream, "cannot open encoder" );
 676         return VLC_EGENERIC;
 677     }
 678
 679     id->b_enc_inited = VLC_FALSE;
 680
 681     id->f_dst.i_extra_data = id->p_encoder->i_extra_data;
 682     id->f_dst.p_extra_data = id->p_encoder->p_extra_data;
 683
 684     /* Hack for mp3 transcoding support */
 685     if( id->f_dst.i_fourcc == VLC_FOURCC( 'm','p','3',' ' ) )
 686     {
 687         id->f_dst.i_fourcc = VLC_FOURCC( 'm','p','g','a' );
 688     }
 689
 690     return VLC_SUCCESS;
 691 }
 692
 693 static void transcode_audio_ffmpeg_close( sout_stream_t *p_stream,
 694                                           sout_stream_id_t *id )
 695 {
 696     if( id->ff_dec )
 697     {
 698         avcodec_close( id->ff_dec_c );
 699         free( id->ff_dec_c );
 700     }
 701
 702     module_Unneed( id->p_encoder, id->p_encoder->p_module );
 703     vlc_object_destroy( id->p_encoder );
 704
 705     free( id->p_buffer );
 706 }
 707
 708 static int transcode_audio_ffmpeg_process( sout_stream_t *p_stream,
 709                                            sout_stream_id_t *id,
 710                                            sout_buffer_t *in,
 711                                            sout_buffer_t **out )
 712 {
 713     aout_buffer_t aout_buf;
 714     block_t *p_block;
 715     int i_buffer = in->i_size;
 716     char *p_buffer = in->p_buffer;
 717     id->i_dts = in->i_dts;
 718     *out = NULL;
 719
 720     while( i_buffer )
 721     {
 722         id->i_buffer_pos = 0;
 723
 724         /* decode as much data as possible */
 725         if( id->ff_dec )
 726         {
 727             int i_used;
 728
 729             i_used = avcodec_decode_audio( id->ff_dec_c,
 730                          (int16_t*)id->p_buffer, &id->i_buffer_pos,
 731                          p_buffer, i_buffer );
 732
 733 #if 0
 734             msg_Warn( p_stream, "avcodec_decode_audio: %d used on %d",
 735                       i_used, i_buffer );
 736 #endif
 737             if( i_used < 0 )
 738             {
 739                 msg_Warn( p_stream, "error audio decoding");
 740                 break;
 741             }
 742
 743             i_buffer -= i_used;
 744             p_buffer += i_used;
 745         }
 746         else
 747         {
 748             int16_t *sout = (int16_t*)id->p_buffer;
 749
 750             if( id->f_src.i_fourcc == VLC_FOURCC( 's', '8', ' ', ' ' ) ||
 751                 id->f_src.i_fourcc == VLC_FOURCC( 'u', '8', ' ', ' ' ) )
 752             {
 753                 int8_t *sin = (int8_t*)p_buffer;
 754                 int i_used = __MIN( id->i_buffer/2, i_buffer );
 755                 int i_samples = i_used;
 756
 757                 if( id->f_src.i_fourcc == VLC_FOURCC( 's', '8', ' ', ' ' ) )
 758                     while( i_samples > 0 )
 759                     {
 760                         *sout++ = ( *sin++ ) << 8;
 761                         i_samples--;
 762                     }
 763                 else
 764                     while( i_samples > 0 )
 765                     {
 766                         *sout++ = ( *sin++ - 128 ) << 8;
 767                         i_samples--;
 768                     }
 769
 770                 i_buffer -= i_used;
 771                 p_buffer += i_used;
 772                 id->i_buffer_pos = i_used * 2;
 773             }
 774             else if( id->f_src.i_fourcc == VLC_FOURCC( 's', '1', '6', 'l' ) ||
 775                      id->f_src.i_fourcc == VLC_FOURCC( 's', '1', '6', 'b' ) )
 776             {
 777                 int16_t *sin = (int16_t*)p_buffer;
 778                 int i_used = __MIN( id->i_buffer, i_buffer );
 779                 int i_samples = i_used / 2;
 780                 int b_invert_indianness;
 781
 782                 if( id->f_src.i_fourcc == VLC_FOURCC( 's', '1', '6', 'l' ) )
 783 #ifdef WORDS_BIGENDIAN
 784                     b_invert_indianness = 1;
 785 #else
 786                     b_invert_indianness = 0;
 787 #endif
 788                 else
 789 #ifdef WORDS_BIGENDIAN
 790                     b_invert_indianness = 0;
 791 #else
 792                     b_invert_indianness = 1;
 793 #endif
 794
 795                 if( b_invert_indianness )
 796                 {
 797                     while( i_samples > 0 )
 798                     {
 799                         uint8_t tmp[2];
 800
 801                         tmp[1] = *sin++;
 802                         tmp[0] = *sin++;
 803                         *sout++ = *(int16_t*)tmp;
 804                         i_samples--;
 805                     }
 806                 }
 807                 else
 808                 {
 809                     memcpy( sout, sin, i_used );
 810                     sout += i_samples;
 811                 }
 812
 813                 i_buffer -= i_used;
 814                 p_buffer += i_used;
 815                 id->i_buffer_pos = i_used;
 816             }
 817         }
 818
 819         if( id->i_buffer_pos == 0 ) continue;
 820
 821         /* Encode as much data as possible */
 822         if( !id->b_enc_inited && id->p_encoder->pf_header )
 823         {
 824             p_block = id->p_encoder->pf_header( id->p_encoder );
 825             while( p_block )
 826             {
 827                 sout_buffer_t *p_out;
 828                 block_t *p_prev_block = p_block;
 829
 830                 p_out = sout_BufferNew( p_stream->p_sout, p_block->i_buffer );
 831                 memcpy( p_out->p_buffer, p_block->p_buffer, p_block->i_buffer);
 832                 p_out->i_dts = p_out->i_pts = in->i_dts;
 833                 p_out->i_length = 0;
 834                 sout_BufferChain( out, p_out );
 835
 836                 p_block = p_block->p_next;
 837                 block_Release( p_prev_block );
 838             }
 839
 840             id->b_enc_inited = VLC_TRUE;
 841         }
 842
 843         aout_buf.p_buffer = id->p_buffer;
 844         aout_buf.i_nb_bytes = id->i_buffer_pos;
 845         aout_buf.i_nb_samples = id->i_buffer_pos / 2 / id->f_src.i_channels;
 846         aout_buf.start_date = id->i_dts;
 847         aout_buf.end_date = id->i_dts;
 848
 849         id->i_dts += ( I64C(1000000) * id->i_buffer_pos / 2 /
 850             id->f_src.i_channels / id->f_src.i_sample_rate );
 851
 852         p_block = id->p_encoder->pf_encode_audio( id->p_encoder, &aout_buf );
 853         while( p_block )
 854         {
 855             sout_buffer_t *p_out;
 856             block_t *p_prev_block = p_block;
 857
 858             p_out = sout_BufferNew( p_stream->p_sout, p_block->i_buffer );
 859             memcpy( p_out->p_buffer, p_block->p_buffer, p_block->i_buffer);
 860             p_out->i_dts = p_block->i_dts;
 861             p_out->i_pts = p_block->i_pts;
 862             p_out->i_length = p_block->i_length;
 863             sout_BufferChain( out, p_out );
 864
 865             p_block = p_block->p_next;
 866             block_Release( p_prev_block );
 867         }
 868     }
 869
 870     return VLC_SUCCESS;
 871 }
 872
 873
 874 /*
 875  * video
 876  */
 877 static int transcode_video_ffmpeg_new( sout_stream_t *p_stream,
 878                                        sout_stream_id_t *id )
 879 {
 880     sout_stream_sys_t   *p_sys = p_stream->p_sys;
 881
 882     int i_ff_codec;
 883
 884     /* Open decoder */
 885     if( id->f_src.i_fourcc == VLC_FOURCC( 'I', '4', '2', '0' ) ||
 886         id->f_src.i_fourcc == VLC_FOURCC( 'I', '4', '2', '2' ) ||
 887         id->f_src.i_fourcc == VLC_FOURCC( 'I', '4', '4', '4' ) ||
 888         id->f_src.i_fourcc == VLC_FOURCC( 'Y', 'U', 'Y', '2' ) ||
 889         id->f_src.i_fourcc == VLC_FOURCC( 'R', 'V', '1', '5' ) ||
 890         id->f_src.i_fourcc == VLC_FOURCC( 'R', 'V', '1', '6' ) ||
 891         id->f_src.i_fourcc == VLC_FOURCC( 'R', 'V', '2', '4' ) ||
 892         id->f_src.i_fourcc == VLC_FOURCC( 'R', 'V', '3', '2' ) ||
 893         id->f_src.i_fourcc == VLC_FOURCC( 'G', 'R', 'E', 'Y' ) )
 894     {
 895         id->ff_dec              = NULL;
 896         id->ff_dec_c            = avcodec_alloc_context();
 897         id->ff_dec_c->width     = id->f_src.i_width;
 898         id->ff_dec_c->height    = id->f_src.i_height;
 899         id->ff_dec_c->pix_fmt   = get_ff_chroma( id->f_src.i_fourcc );
 900     }
 901     else
 902     {
 903         /* find decoder */
 904         i_ff_codec = get_ff_codec( id->f_src.i_fourcc );
 905         if( i_ff_codec == 0 )
 906         {
 907             msg_Err( p_stream, "cannot find decoder" );
 908             return VLC_EGENERIC;
 909         }
 910
 911         id->ff_dec = avcodec_find_decoder( i_ff_codec );
 912         if( !id->ff_dec )
 913         {
 914             msg_Err( p_stream, "cannot find decoder" );
 915             return VLC_EGENERIC;
 916         }
 917
 918         id->ff_dec_c = avcodec_alloc_context();
 919         id->ff_dec_c->width         = id->f_src.i_width;
 920         id->ff_dec_c->height        = id->f_src.i_height;
 921         /* id->ff_dec_c->bit_rate      = id->f_src.i_bitrate; */
 922         id->ff_dec_c->extradata_size= id->f_src.i_extra_data;
 923         id->ff_dec_c->extradata     = id->f_src.p_extra_data;
 924         id->ff_dec_c->workaround_bugs = FF_BUG_AUTODETECT;
 925         id->ff_dec_c->error_resilience= -1;
 926         id->ff_dec_c->get_buffer    = transcode_video_ffmpeg_getframebuf;
 927         id->ff_dec_c->opaque        = p_sys;
 928
 929         if( avcodec_open( id->ff_dec_c, id->ff_dec ) < 0 )
 930         {
 931             msg_Err( p_stream, "cannot open decoder" );
 932             return VLC_EGENERIC;
 933         }
 934
 935         if( i_ff_codec == CODEC_ID_MPEG4 && id->ff_dec_c->extradata_size > 0 )
 936         {
 937             int b_gotpicture;
 938             AVFrame frame;
 939             uint8_t *p_vol = malloc( id->ff_dec_c->extradata_size +
 940                                      FF_INPUT_BUFFER_PADDING_SIZE );
 941
 942             memcpy( p_vol, id->ff_dec_c->extradata,
 943                     id->ff_dec_c->extradata_size );
 944             memset( p_vol + id->ff_dec_c->extradata_size, 0,
 945                     FF_INPUT_BUFFER_PADDING_SIZE );
 946
 947             avcodec_decode_video( id->ff_dec_c, &frame, &b_gotpicture,
 948                                   id->ff_dec_c->extradata,
 949                                   id->ff_dec_c->extradata_size );
 950             free( p_vol );
 951         }
 952     }
 953
 954     /* Open encoder */
 955     id->p_encoder = vlc_object_create( p_stream, VLC_OBJECT_ENCODER );
 956     id->p_encoder->i_fourcc = id->f_dst.i_fourcc;
 957     id->p_encoder->format.video.i_width = p_sys->i_width;
 958     id->p_encoder->format.video.i_height = p_sys->i_height;
 959     id->p_encoder->i_bitrate = p_sys->i_vbitrate;
 960
 961     id->p_encoder->i_vtolerance = p_sys->i_vtolerance;
 962     id->p_encoder->i_key_int = p_sys->i_key_int;
 963     id->p_encoder->i_b_frames = p_sys->i_b_frames;
 964     id->p_encoder->i_qmin = p_sys->i_qmin;
 965     id->p_encoder->i_qmax = p_sys->i_qmax;
 966     id->p_encoder->i_hq = p_sys->i_hq;
 967
 968     if( id->p_encoder->format.video.i_width <= 0 )
 969     {
 970         id->p_encoder->format.video.i_width = id->f_dst.i_width =
 971             id->ff_dec_c->width - p_sys->i_crop_left - p_sys->i_crop_right;
 972     }
 973     if( id->p_encoder->format.video.i_height <= 0 )
 974     {
 975         id->p_encoder->format.video.i_height = id->f_dst.i_height =
 976             id->ff_dec_c->height - p_sys->i_crop_top - p_sys->i_crop_bottom;
 977     }
 978
 979     id->p_ff_pic         = avcodec_alloc_frame();
 980     id->p_ff_pic_tmp0    = NULL;
 981     id->p_ff_pic_tmp1    = NULL;
 982     id->p_ff_pic_tmp2    = NULL;
 983     id->p_vresample      = NULL;
 984
 985     if( id->ff_dec )
 986     {
 987         id->p_encoder->i_frame_rate = id->ff_dec_c->frame_rate;
 988 #if LIBAVCODEC_BUILD >= 4662
 989         id->p_encoder->i_frame_rate_base= id->ff_dec_c->frame_rate_base;
 990 #endif
 991
 992 #if LIBAVCODEC_BUILD >= 4687
 993         id->p_encoder->i_aspect = VOUT_ASPECT_FACTOR *
 994             ( av_q2d(id->ff_dec_c->sample_aspect_ratio) *
 995               id->ff_dec_c->width / id->ff_dec_c->height );
 996 #else
 997         id->p_encoder->i_aspect = VOUT_ASPECT_FACTOR *
 998             id->ff_dec_c->aspect_ratio;
 999 #endif
1000
1001     }
1002     else
1003     {
1004 #if LIBAVCODEC_BUILD >= 4662
1005         id->p_encoder->i_frame_rate     = 25 ; /* FIXME as it break mpeg */
1006         id->p_encoder->i_frame_rate_base= 1;
1007 #else
1008         id->p_encoder->i_frame_rate     = 25 * FRAME_RATE_BASE;
1009 #endif
1010     }
1011
1012     id->p_encoder->p_module =
1013         module_Need( id->p_encoder, "video encoder", NULL );
1014
1015     if( !id->p_encoder->p_module )
1016     {
1017         vlc_object_destroy( id->p_encoder );
1018         msg_Err( p_stream, "cannot find encoder" );
1019         return VLC_EGENERIC;
1020     }
1021
1022     /* Close the encoder.
1023      * We'll open it only when we have the first frame */
1024     module_Unneed( id->p_encoder, id->p_encoder->p_module );
1025
1026     id->b_enc_inited = VLC_FALSE;
1027
1028     return VLC_SUCCESS;
1029 }
1030
1031 static void transcode_video_ffmpeg_close ( sout_stream_t *p_stream,
1032                                            sout_stream_id_t *id )
1033 {
1034     /* Close decoder */
1035     if( id->ff_dec )
1036     {
1037         avcodec_close( id->ff_dec_c );
1038         free( id->ff_dec_c );
1039     }
1040
1041     /* Close encoder */
1042     module_Unneed( id->p_encoder, id->p_encoder->p_module );
1043     vlc_object_destroy( id->p_encoder );
1044
1045     /* Misc cleanup */
1046     if( id->p_ff_pic)
1047     {
1048         free( id->p_ff_pic );
1049     }
1050
1051     if( id->p_ff_pic_tmp0 )
1052     {
1053         free( id->p_ff_pic_tmp0->data[0] );
1054         free( id->p_ff_pic_tmp0 );
1055     }
1056     if( id->p_ff_pic_tmp1)
1057     {
1058         free( id->p_ff_pic_tmp1->data[0] );
1059         free( id->p_ff_pic_tmp1 );
1060     }
1061     if( id->p_ff_pic_tmp2)
1062     {
1063         free( id->p_ff_pic_tmp2->data[0] );
1064         free( id->p_ff_pic_tmp2 );
1065     }
1066     if( id->p_vresample )
1067     {
1068         free( id->p_vresample );
1069     }
1070 }
1071
1072 static int transcode_video_ffmpeg_process( sout_stream_t *p_stream,
1073                sout_stream_id_t *id, sout_buffer_t *in, sout_buffer_t **out )
1074 {
1075     sout_stream_sys_t   *p_sys = p_stream->p_sys;
1076     int     i_used;
1077     int     b_gotpicture;
1078     AVFrame *frame;
1079
1080     int     i_data;
1081     uint8_t *p_data;
1082
1083     *out = NULL;
1084
1085     i_data = in->i_size;
1086     p_data = in->p_buffer;
1087
1088     for( ;; )
1089     {
1090         block_t *p_block;
1091         picture_t pic;
1092         int i_plane;
1093
1094         /* decode frame */
1095         frame = id->p_ff_pic;
1096         p_sys->i_input_pts = in->i_pts;
1097        if( id->ff_dec )
1098         {
1099             i_used = avcodec_decode_video( id->ff_dec_c, frame,
1100                                            &b_gotpicture,
1101                                            p_data, i_data );
1102         }
1103         else
1104         {
1105             /* raw video */
1106             avpicture_fill( (AVPicture*)frame,
1107                             p_data,
1108                             id->ff_dec_c->pix_fmt,
1109                             id->ff_dec_c->width, id->ff_dec_c->height );
1110             i_used = i_data;
1111             b_gotpicture = 1;
1112
1113             /* Set PTS */
1114             frame->pts = p_sys->i_input_pts;
1115         }
1116
1117         if( i_used < 0 )
1118         {
1119             msg_Warn( p_stream, "error");
1120             return VLC_EGENERIC;
1121         }
1122         i_data -= i_used;
1123         p_data += i_used;
1124
1125         if( !b_gotpicture )
1126         {
1127             return VLC_SUCCESS;
1128         }
1129
1130         /* Get the pts of the decoded frame if any, otherwise keep the
1131          * interpolated one */
1132         if( frame->pts > 0 )
1133         {
1134             p_sys->i_output_pts = frame->pts;
1135         }
1136
1137         if( !id->b_enc_inited )
1138         {
1139             /* XXX hack because of copy packetizer and mpeg4video that can fail
1140              * detecting size */
1141             if( id->p_encoder->format.video.i_width <= 0 )
1142             {
1143                 id->p_encoder->format.video.i_width = id->f_dst.i_width =
1144                     id->ff_dec_c->width - p_sys->i_crop_left -
1145                     p_sys->i_crop_right;
1146             }
1147             if( id->p_encoder->format.video.i_height <= 0 )
1148             {
1149                 id->p_encoder->format.video.i_height = id->f_dst.i_height =
1150                     id->ff_dec_c->height - p_sys->i_crop_top -
1151                     p_sys->i_crop_bottom;
1152             }
1153
1154             id->p_encoder->i_bitrate = p_sys->i_vbitrate;
1155
1156             id->p_encoder->i_extra_data = 0;
1157             id->p_encoder->p_extra_data = NULL;
1158
1159             id->p_encoder->p_module =
1160                 module_Need( id->p_encoder, "video encoder", NULL );
1161             if( !id->p_encoder->p_module )
1162             {
1163                 vlc_object_destroy( id->p_encoder );
1164                 msg_Err( p_stream, "cannot find encoder" );
1165                 return VLC_EGENERIC;
1166             }
1167
1168             id->f_dst.i_extra_data = id->p_encoder->i_extra_data;
1169             id->f_dst.p_extra_data = id->p_encoder->p_extra_data;
1170
1171             /* Hack for mp2v/mp1v transcoding support */
1172             if( id->f_dst.i_fourcc == VLC_FOURCC( 'm','p','1','v' ) ||
1173                 id->f_dst.i_fourcc == VLC_FOURCC( 'm','p','2','v' ) )
1174             {
1175                 id->f_dst.i_fourcc = VLC_FOURCC( 'm','p','g','v' );
1176             }
1177
1178             if( !( id->id =
1179                      p_stream->p_sys->p_out->pf_add( p_stream->p_sys->p_out,
1180                                                      &id->f_dst ) ) )
1181             {
1182                 msg_Err( p_stream, "cannot add this stream" );
1183                 transcode_video_ffmpeg_close( p_stream, id );
1184                 id->b_transcode = VLC_FALSE;
1185                 return VLC_EGENERIC;
1186             }
1187
1188             while( id->p_encoder->pf_header &&
1189                    (p_block = id->p_encoder->pf_header( id->p_encoder )) )
1190             {
1191                 sout_buffer_t *p_out;
1192                 p_out = sout_BufferNew( p_stream->p_sout, p_block->i_buffer );
1193                 memcpy( p_out->p_buffer, p_block->p_buffer, p_block->i_buffer);
1194                 p_out->i_dts = in->i_dts;
1195                 p_out->i_pts = in->i_dts;
1196                 p_out->i_length = 0;
1197                 sout_BufferChain( out, p_out );
1198             }
1199
1200             id->i_inter_pixfmt =
1201                 get_ff_chroma( id->p_encoder->format.video.i_chroma );
1202
1203             id->b_enc_inited = VLC_TRUE;
1204         }
1205
1206         /* deinterlace */
1207         if( p_stream->p_sys->b_deinterlace )
1208         {
1209             if( id->p_ff_pic_tmp0 == NULL )
1210             {
1211                 int     i_size;
1212                 uint8_t *buf;
1213                 id->p_ff_pic_tmp0 = avcodec_alloc_frame();
1214                 i_size = avpicture_get_size( id->ff_dec_c->pix_fmt,
1215                                              id->ff_dec_c->width, id->ff_dec_c->height );
1216
1217                 buf = malloc( i_size );
1218
1219                 avpicture_fill( (AVPicture*)id->p_ff_pic_tmp0, buf,
1220                                 id->i_inter_pixfmt,
1221                                 id->ff_dec_c->width, id->ff_dec_c->height );
1222             }
1223
1224             avpicture_deinterlace( (AVPicture*)id->p_ff_pic_tmp0, (AVPicture*)frame,
1225                                    id->ff_dec_c->pix_fmt,
1226                                    id->ff_dec_c->width, id->ff_dec_c->height );
1227
1228             frame = id->p_ff_pic_tmp0;
1229         }
1230
1231         /* convert pix format */
1232         if( id->ff_dec_c->pix_fmt != id->i_inter_pixfmt )
1233         {
1234             if( id->p_ff_pic_tmp1 == NULL )
1235             {
1236                 int     i_size;
1237                 uint8_t *buf;
1238                 id->p_ff_pic_tmp1 = avcodec_alloc_frame();
1239                 i_size = avpicture_get_size( id->i_inter_pixfmt,
1240                                              id->ff_dec_c->width,
1241                                              id->ff_dec_c->height );
1242
1243                 buf = malloc( i_size );
1244
1245                 avpicture_fill( (AVPicture*)id->p_ff_pic_tmp1, buf,
1246                                 id->i_inter_pixfmt,
1247                                 id->ff_dec_c->width, id->ff_dec_c->height );
1248             }
1249
1250             img_convert( (AVPicture*)id->p_ff_pic_tmp1, id->i_inter_pixfmt,
1251                          (AVPicture*)frame, id->ff_dec_c->pix_fmt,
1252                          id->ff_dec_c->width, id->ff_dec_c->height );
1253
1254             frame = id->p_ff_pic_tmp1;
1255         }
1256
1257         /* convert size and crop */
1258         if( id->ff_dec_c->width  != id->f_dst.i_width ||
1259             id->ff_dec_c->height != id->f_dst.i_height ||
1260             p_sys->i_crop_top > 0 || p_sys->i_crop_bottom > 0 ||
1261             p_sys->i_crop_left > 0 || p_sys->i_crop_right )
1262         {
1263             if( id->p_ff_pic_tmp2 == NULL )
1264             {
1265                 int     i_size;
1266                 uint8_t *buf;
1267                 id->p_ff_pic_tmp2 = avcodec_alloc_frame();
1268                 i_size = avpicture_get_size( id->i_inter_pixfmt,
1269                                              id->f_dst.i_width,
1270                                              id->f_dst.i_height );
1271
1272                 buf = malloc( i_size );
1273
1274                 avpicture_fill( (AVPicture*)id->p_ff_pic_tmp2, buf,
1275                                 id->i_inter_pixfmt,
1276                                 id->f_dst.i_width, id->f_dst.i_height );
1277
1278                 id->p_vresample =
1279                     img_resample_full_init( id->f_dst.i_width,
1280                                             id->f_dst.i_height,
1281                                             id->ff_dec_c->width, id->ff_dec_c->height,
1282                                             p_stream->p_sys->i_crop_top,
1283                                             p_stream->p_sys->i_crop_bottom,
1284                                             p_stream->p_sys->i_crop_left,
1285                                             p_stream->p_sys->i_crop_right );
1286             }
1287
1288             img_resample( id->p_vresample, (AVPicture*)id->p_ff_pic_tmp2,
1289                           (AVPicture*)frame );
1290
1291             frame = id->p_ff_pic_tmp2;
1292         }
1293
1294         /* Encoding */
1295         vout_InitPicture( VLC_OBJECT(p_stream), &pic,
1296                           id->p_encoder->format.video.i_chroma,
1297                           id->f_dst.i_width, id->f_dst.i_height,
1298                           id->f_dst.i_width * VOUT_ASPECT_FACTOR /
1299                           id->f_dst.i_height );
1300
1301         for( i_plane = 0; i_plane < pic.i_planes; i_plane++ )
1302         {
1303             pic.p[i_plane].p_pixels = frame->data[i_plane];
1304             pic.p[i_plane].i_pitch = frame->linesize[i_plane];
1305         }
1306
1307         /* Set the pts of the frame being encoded */
1308         pic.date = p_sys->i_output_pts;
1309
1310         /* Interpolate the next PTS
1311          * (needed by the mpeg video packetizer which can send pts <= 0 ) */
1312         if( id->ff_dec_c && id->ff_dec_c->frame_rate > 0 )
1313         {
1314             p_sys->i_output_pts += I64C(1000000) * (2 + frame->repeat_pict) *
1315               id->ff_dec_c->frame_rate_base / (2 * id->ff_dec_c->frame_rate);
1316         }
1317
1318         p_block = id->p_encoder->pf_encode_video( id->p_encoder, &pic );
1319         while( p_block )
1320         {
1321             sout_buffer_t *p_out;
1322             block_t *p_prev_block = p_block;
1323
1324             p_out = sout_BufferNew( p_stream->p_sout, p_block->i_buffer );
1325             memcpy( p_out->p_buffer, p_block->p_buffer, p_block->i_buffer);
1326             p_out->i_dts = p_block->i_dts;
1327             p_out->i_pts = p_block->i_pts;
1328             p_out->i_length = p_block->i_length;
1329             sout_BufferChain( out, p_out );
1330
1331             p_block = p_block->p_next;
1332             block_Release( p_prev_block );
1333         }
1334
1335         if( i_data <= 0 )
1336         {
1337             return VLC_SUCCESS;
1338         }
1339     }
1340
1341     return VLC_SUCCESS;
1342 }
1343
1344 /*****************************************************************************
1345  * transcode_video_ffmpeg_getframebuf:
1346  *
1347  * Callback used by ffmpeg to get a frame buffer.
1348  * We use it to get the right PTS for each decoded picture.
1349  *****************************************************************************/
1350 static int transcode_video_ffmpeg_getframebuf(struct AVCodecContext *p_context,
1351                                               AVFrame *p_frame)
1352 {
1353     sout_stream_sys_t *p_sys = (sout_stream_sys_t *)p_context->opaque;
1354
1355     /* Set PTS */
1356     p_frame->pts = p_sys->i_input_pts;
1357
1358     return avcodec_default_get_buffer( p_context, p_frame );
1359 }