git.sesse.net Git - vlc/blob - modules/codec/ffmpeg/video.c

   1 /*****************************************************************************
   2  * video.c: video decoder using ffmpeg library
   3  *****************************************************************************
   4  * Copyright (C) 1999-2001 VideoLAN
   5  * $Id: video.c,v 1.37 2003/08/08 17:08:32 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>                                      /* malloc(), free() */
  29
  30 #include <vlc/vlc.h>
  31 #include <vlc/vout.h>
  32 #include <vlc/aout.h>
  33 #include <vlc/decoder.h>
  34 #include <vlc/input.h>
  35
  36 #include <string.h>
  37
  38 #ifdef HAVE_SYS_TIMES_H
  39 #   include <sys/times.h>
  40 #endif
  41
  42 /* ffmpeg header */
  43 #ifdef HAVE_FFMPEG_AVCODEC_H
  44 #   include <ffmpeg/avcodec.h>
  45 #else
  46 #   include <avcodec.h>
  47 #endif
  48
  49 #include "ffmpeg.h"
  50
  51 #ifdef LIBAVCODEC_PP
  52 #   ifdef HAVE_POSTPROC_POSTPROCESS_H
  53 #       include <postproc/postprocess.h>
  54 #   else
  55 #       include <libpostproc/postprocess.h>
  56 #   endif
  57 #else
  58 #   include "postprocessing/postprocessing.h"
  59 #endif
  60
  61 #include "video.h"
  62
  63
  64 /*****************************************************************************
  65  * Local prototypes
  66  *****************************************************************************/
  67 static void ffmpeg_CopyPicture( picture_t *, AVFrame *, vdec_thread_t * );
  68
  69 static int  ffmpeg_GetFrameBuf      ( struct AVCodecContext *, AVFrame * );
  70 static void ffmpeg_ReleaseFrameBuf  ( struct AVCodecContext *, AVFrame * );
  71
  72 /*****************************************************************************
  73  * Local Functions
  74  *****************************************************************************/
  75 static inline uint32_t ffmpeg_PixFmtToChroma( int i_ff_chroma )
  76 {
  77     /* FIXME FIXME some of them are wrong */
  78     switch( i_ff_chroma )
  79     {
  80         case PIX_FMT_YUV420P:
  81         case PIX_FMT_YUV422:
  82             return( VLC_FOURCC('I','4','2','0') );
  83         case PIX_FMT_RGB24:
  84             return( VLC_FOURCC('R','V','2','4') );
  85
  86         case PIX_FMT_YUV422P:
  87             return( VLC_FOURCC('I','4','2','2') );
  88         case PIX_FMT_YUV444P:
  89             return( VLC_FOURCC('I','4','4','4') );
  90         case PIX_FMT_YUV410P:
  91         case PIX_FMT_YUV411P:
  92         case PIX_FMT_BGR24:
  93         default:
  94             return( 0 );
  95     }
  96 }
  97
  98 /* Return a Vout */
  99 static vout_thread_t *ffmpeg_CreateVout( vdec_thread_t  *p_vdec,
 100                                          AVCodecContext *p_context )
 101 {
 102     vout_thread_t *p_vout;
 103     unsigned int   i_width = p_context->width;
 104     unsigned int   i_height = p_context->height;
 105     uint32_t       i_chroma = ffmpeg_PixFmtToChroma( p_context->pix_fmt );
 106     unsigned int   i_aspect;
 107
 108     if( !i_width || !i_height )
 109     {
 110         return( NULL ); /* Can't create a new vout without display size */
 111     }
 112
 113     if( !i_chroma )
 114     {
 115         /* we make conversion if possible*/
 116         i_chroma = VLC_FOURCC('I','4','2','0');
 117     }
 118
 119     i_aspect = VOUT_ASPECT_FACTOR * p_context->aspect_ratio;
 120     if( i_aspect == 0 )
 121     {
 122         i_aspect = VOUT_ASPECT_FACTOR * i_width / i_height;
 123     }
 124
 125     /* Spawn a video output if there is none. First we look for our children,
 126      * then we look for any other vout that might be available. */
 127     p_vout = vout_Request( p_vdec->p_fifo, p_vdec->p_vout,
 128                            i_width, i_height, i_chroma, i_aspect );
 129 #ifdef LIBAVCODEC_PP
 130     if( p_vdec->pp_mode && !p_vdec->pp_context )
 131     {
 132         int32_t i_cpu = p_vdec->p_fifo->p_libvlc->i_cpu;
 133         int i_flags = 0;
 134
 135         if( i_cpu & CPU_CAPABILITY_MMX )
 136         {
 137             i_flags |= PP_CPU_CAPS_MMX;
 138         }
 139         if( i_cpu & CPU_CAPABILITY_MMXEXT )
 140         {
 141             i_flags |= PP_CPU_CAPS_MMX2;
 142         }
 143         if( i_cpu & CPU_CAPABILITY_3DNOW )
 144         {
 145             i_flags |= PP_CPU_CAPS_3DNOW;
 146         }
 147
 148         switch( p_context->pix_fmt )
 149         {
 150             case PIX_FMT_YUV444P:
 151                 i_flags |= PP_FORMAT_444;
 152                 break;
 153             case PIX_FMT_YUV422P:
 154                 i_flags |= PP_FORMAT_422;
 155                 break;
 156             case PIX_FMT_YUV411P:
 157                 i_flags |= PP_FORMAT_411;
 158                 break;
 159             default:
 160                 i_flags |= PP_FORMAT_420;
 161                 break;
 162         }
 163
 164         p_vdec->pp_context = pp_get_context( i_width, i_height, i_flags );
 165     }
 166 #endif
 167
 168     return p_vout;
 169 }
 170
 171 /*****************************************************************************
 172  *
 173  * Functions that initialize, decode and end the decoding process
 174  *
 175  * Functions exported for ffmpeg.c
 176  *   * E_( InitThread_Video )
 177  *   * E_( DecodeThread )
 178  *   * E_( EndThread_Video )
 179  *****************************************************************************/
 180
 181 /*****************************************************************************
 182  * InitThread: initialize vdec output thread
 183  *****************************************************************************
 184  * This function is called from decoder_Run and performs the second step
 185  * of the initialization. It returns 0 on success. Note that the thread's
 186  * flag are not modified inside this function.
 187  *
 188  * ffmpeg codec will be open, some memory allocated. But Vout is not yet
 189  * open (done after the first decoded frame)
 190  *****************************************************************************/
 191 static inline void SetDWBE( void *data, uint32_t dw )
 192 {
 193     uint8_t *p = data;
 194
 195     p[0] = (dw >> 24 )&0xff;
 196     p[1] = (dw >> 16 )&0xff;
 197     p[2] = (dw >>  8 )&0xff;
 198     p[3] = (dw )&0xff;
 199 }
 200
 201 int E_( InitThread_Video )( vdec_thread_t *p_vdec )
 202 {
 203     int i_tmp;
 204     int i_truncated;
 205
 206     p_vdec->p_ff_pic = avcodec_alloc_frame();
 207
 208     if( ( p_vdec->p_format =
 209           (BITMAPINFOHEADER *)p_vdec->p_fifo->p_bitmapinfoheader ) != NULL )
 210     {
 211         /* ***** Fill p_context with init values ***** */
 212         p_vdec->p_context->width  = p_vdec->p_format->biWidth;
 213         p_vdec->p_context->height = p_vdec->p_format->biHeight;
 214     }
 215     else
 216     {
 217         msg_Warn( p_vdec->p_fifo, "display informations missing" );
 218         p_vdec->p_format = NULL;
 219     }
 220
 221     /*  ***** Get configuration of ffmpeg plugin ***** */
 222     i_tmp = config_GetInt( p_vdec->p_fifo, "ffmpeg-workaround-bugs" );
 223     p_vdec->p_context->workaround_bugs  = __MAX( __MIN( i_tmp, 99 ), 0 );
 224
 225     i_tmp = config_GetInt( p_vdec->p_fifo, "ffmpeg-error-resilience" );
 226     p_vdec->p_context->error_resilience = __MAX( __MIN( i_tmp, 99 ), -1 );
 227
 228     if( config_GetInt( p_vdec->p_fifo, "grayscale" ) )
 229     {
 230         p_vdec->p_context->flags|= CODEC_FLAG_GRAY;
 231     }
 232
 233     p_vdec->b_hurry_up = config_GetInt(p_vdec->p_fifo, "ffmpeg-hurry-up");
 234
 235     /* CODEC_FLAG_TRUNCATED */
 236
 237     /* FIXME search real LIBAVCODEC_BUILD */
 238 #if LIBAVCODEC_BUILD >= 4662
 239     i_truncated = config_GetInt( p_vdec->p_fifo, "ffmpeg-truncated" );
 240     if( i_truncated == 1 )
 241 #if 0
 242         ||
 243         ( i_truncated == -1 && ( p_vdec->p_context->width == 0 || p_vdec->p_context->height == 0 ) ) )
 244 #endif
 245     {
 246         p_vdec->p_context->flags |= CODEC_FLAG_TRUNCATED;
 247     }
 248 #endif
 249
 250     /* ***** Open the codec ***** */
 251     if( avcodec_open(p_vdec->p_context, p_vdec->p_codec) < 0 )
 252     {
 253         msg_Err( p_vdec->p_fifo, "cannot open codec (%s)",
 254                                  p_vdec->psz_namecodec );
 255         return( VLC_EGENERIC );
 256     }
 257     else
 258     {
 259         msg_Dbg( p_vdec->p_fifo, "ffmpeg codec (%s) started",
 260                                  p_vdec->psz_namecodec );
 261     }
 262
 263     p_vdec->b_direct_rendering = 0;
 264     if( config_GetInt( p_vdec->p_fifo, "ffmpeg-dr" ) &&
 265         p_vdec->p_codec->capabilities & CODEC_CAP_DR1 &&
 266         ffmpeg_PixFmtToChroma( p_vdec->p_context->pix_fmt ) &&
 267         /* Apparently direct rendering doesn't work with YUV422P */
 268         p_vdec->p_context->pix_fmt != PIX_FMT_YUV422P &&
 269         !(p_vdec->p_context->width % 16) && !(p_vdec->p_context->height % 16) )
 270     {
 271         /* Some codecs set pix_fmt only after the 1st frame has been decoded,
 272          * so we need to do another check in ffmpeg_GetFrameBuf() */
 273         p_vdec->b_direct_rendering = 1;
 274     }
 275
 276     /* ***** Load post processing ***** */
 277 #ifdef LIBAVCODEC_PP
 278     p_vdec->pp_context = NULL;
 279     p_vdec->pp_mode    = NULL;
 280
 281     if( config_GetInt( p_vdec->p_fifo, "ffmpeg-pp-q" ) > 0 )
 282     {
 283         int  i_quality = config_GetInt( p_vdec->p_fifo, "ffmpeg-pp-q" );
 284         char *psz_name = config_GetPsz( p_vdec->p_fifo, "ffmpeg-pp-name" );
 285
 286         if( !psz_name )
 287         {
 288             psz_name = strdup( "default" );
 289         }
 290         else if( *psz_name == '\0' )
 291         {
 292             free( psz_name );
 293             psz_name = strdup( "default" );
 294         }
 295
 296         p_vdec->pp_mode =
 297             pp_get_mode_by_name_and_quality( psz_name, i_quality );
 298
 299         if( !p_vdec->pp_mode )
 300         {
 301             msg_Err( p_vdec->p_fifo, "failed geting mode for postproc" );
 302         }
 303         else
 304         {
 305             msg_Info( p_vdec->p_fifo, "postproc activated" );
 306         }
 307         free( psz_name );
 308
 309         /* for now we cannot do postproc and dr */
 310         p_vdec->b_direct_rendering = 0;
 311     }
 312     else
 313     {
 314         msg_Dbg( p_vdec->p_fifo, "no postproc" );
 315     }
 316 #endif
 317
 318     /* ffmpeg doesn't properly release old pictures when frames are skipped */
 319     if( p_vdec->b_hurry_up ) p_vdec->b_direct_rendering = 0;
 320
 321     /* Always use our get_buffer wrapper so we can calculate the
 322      * PTS correctly */
 323     p_vdec->p_context->get_buffer = ffmpeg_GetFrameBuf;
 324     p_vdec->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
 325     p_vdec->p_context->opaque = p_vdec;
 326
 327     if( p_vdec->b_direct_rendering )
 328     {
 329         msg_Dbg( p_vdec->p_fifo, "using direct rendering" );
 330         p_vdec->p_context->flags |= CODEC_FLAG_EMU_EDGE;
 331     }
 332
 333     /* ***** init this codec with special data ***** */
 334     if( p_vdec->p_format &&
 335             p_vdec->p_format->biSize > sizeof(BITMAPINFOHEADER) )
 336     {
 337         int b_gotpicture;
 338         int i_size = p_vdec->p_format->biSize - sizeof(BITMAPINFOHEADER);
 339
 340         if( p_vdec->i_codec_id == CODEC_ID_MPEG4 )
 341         {
 342             uint8_t *p_vol = malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
 343
 344             memcpy( p_vol, &p_vdec->p_format[1], i_size );
 345             memset( &p_vol[i_size], 0, FF_INPUT_BUFFER_PADDING_SIZE );
 346
 347             avcodec_decode_video( p_vdec->p_context, p_vdec->p_ff_pic,
 348                                   &b_gotpicture,
 349                                   p_vol,
 350                                   i_size );
 351             free( p_vol );
 352         }
 353 #if LIBAVCODEC_BUILD >= 4666
 354         else if( p_vdec->i_codec_id == CODEC_ID_SVQ3 )
 355         {
 356             uint8_t *p;
 357
 358             p_vdec->p_context->extradata_size = i_size + 12;
 359             p = p_vdec->p_context->extradata  =
 360                 malloc( p_vdec->p_context->extradata_size );
 361
 362             memcpy( &p[0],  "SVQ3", 4 );
 363             memset( &p[4], 0, 8 );
 364             memcpy( &p[12], &p_vdec->p_format[1], i_size );
 365         }
 366 #endif
 367         else
 368         {
 369             p_vdec->p_context->extradata_size = i_size;
 370             p_vdec->p_context->extradata =
 371                 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
 372             memcpy( p_vdec->p_context->extradata,
 373                     &p_vdec->p_format[1], i_size );
 374             memset( &((uint8_t*)p_vdec->p_context->extradata)[i_size],
 375                     0, FF_INPUT_BUFFER_PADDING_SIZE );
 376         }
 377     }
 378     p_vdec->p_vout = NULL;
 379
 380     p_vdec->input_pts_previous = 0;
 381     p_vdec->input_pts = 0;
 382
 383     return( VLC_SUCCESS );
 384 }
 385
 386 /*****************************************************************************
 387  * DecodeThread: Called to decode one frame
 388  *****************************************************************************
 389  * We have to get a frame stored in a pes, give it to ffmpeg decoder and send
 390  * the image to the output.
 391  *****************************************************************************/
 392 void  E_( DecodeThread_Video )( vdec_thread_t *p_vdec )
 393 {
 394     pes_packet_t    *p_pes;
 395     int     i_frame_size;
 396     int     i_used;
 397     int     b_drawpicture;
 398     int     b_gotpicture;
 399     picture_t *p_pic;                                         /* vlc picture */
 400
 401     /* TODO implement it in a better way */
 402     /* A good idea could be to decode all I pictures and see for the other */
 403     if( p_vdec->b_hurry_up && p_vdec->i_frame_late > 4 )
 404     {
 405         b_drawpicture = 0;
 406         if( p_vdec->i_frame_late < 8 )
 407         {
 408             p_vdec->p_context->hurry_up = 2;
 409         }
 410         else
 411         {
 412             /* too much late picture, won't decode
 413                but break picture until a new I, and for mpeg4 ...*/
 414             p_vdec->i_frame_late--; /* needed else it will never be decrease */
 415             input_ExtractPES( p_vdec->p_fifo, NULL );
 416             return;
 417         }
 418     }
 419     else
 420     {
 421         b_drawpicture = 1;
 422         p_vdec->p_context->hurry_up = 0;
 423     }
 424
 425     if( p_vdec->i_frame_late > 0 &&
 426         mdate() - p_vdec->i_frame_late_start > (mtime_t)5000000 )
 427     {
 428         msg_Err( p_vdec->p_fifo, "more than 5 seconds of late video -> "
 429                  "dropping (to slow computer ?)" );
 430         do
 431         {
 432             input_ExtractPES( p_vdec->p_fifo, &p_pes );
 433             if( !p_pes )
 434             {
 435                 p_vdec->p_fifo->b_error = 1;
 436                 return;
 437             }
 438
 439             if( p_pes->i_pts > 0 )
 440             {
 441                 p_vdec->input_pts_previous = p_vdec->input_pts;
 442                 p_vdec->input_pts = p_pes->i_pts;
 443             }
 444             input_DeletePES( p_vdec->p_fifo->p_packets_mgt, p_pes );
 445
 446         } while( p_vdec->input_pts <= 0 || p_vdec->input_pts < mdate() );
 447     }
 448
 449     if( !p_vdec->p_context->width || !p_vdec->p_context->height )
 450     {
 451         p_vdec->p_context->hurry_up = 5;
 452     }
 453
 454     do
 455     {
 456         input_ExtractPES( p_vdec->p_fifo, &p_pes );
 457         if( !p_pes )
 458         {
 459             p_vdec->p_fifo->b_error = 1;
 460             return;
 461         }
 462
 463         if( p_pes->i_pts > 0 )
 464         {
 465             p_vdec->input_pts_previous = p_vdec->input_pts;
 466             p_vdec->input_pts = p_pes->i_pts;
 467         }
 468
 469         i_frame_size = p_pes->i_pes_size;
 470
 471         if( i_frame_size > 0 )
 472         {
 473             uint8_t *p_last;
 474             int i_need;
 475             /* XXX Don't forget that ffmpeg required a little more bytes
 476              * that the real frame size */
 477             i_need = i_frame_size + FF_INPUT_BUFFER_PADDING_SIZE + p_vdec->i_buffer;
 478             if( p_vdec->i_buffer_size < i_need)
 479             {
 480                 p_last = p_vdec->p_buffer;
 481                 p_vdec->p_buffer = malloc( i_need );
 482                 p_vdec->i_buffer_size = i_need;
 483                 if( p_vdec->i_buffer > 0 )
 484                 {
 485                     memcpy( p_vdec->p_buffer, p_last, p_vdec->i_buffer );
 486                 }
 487                 FREE( p_last );
 488             }
 489             i_frame_size =
 490                 E_( GetPESData )( p_vdec->p_buffer + p_vdec->i_buffer,
 491                                   i_frame_size , p_pes );
 492             memset( p_vdec->p_buffer + p_vdec->i_buffer + i_frame_size,
 493                     0, FF_INPUT_BUFFER_PADDING_SIZE );
 494         }
 495
 496         input_DeletePES( p_vdec->p_fifo->p_packets_mgt, p_pes );
 497
 498     } while( i_frame_size <= 0 );
 499
 500     i_frame_size += p_vdec->i_buffer;
 501
 502 usenextdata:
 503     i_used = avcodec_decode_video( p_vdec->p_context,
 504                                    p_vdec->p_ff_pic,
 505                                    &b_gotpicture,
 506                                    p_vdec->p_buffer,
 507                                    i_frame_size );
 508
 509     if( p_vdec->p_fifo->b_die || p_vdec->p_fifo->b_error ) return;
 510
 511 #if 0
 512     msg_Dbg( p_vdec->p_fifo,
 513              "used:%d framesize:%d (%s picture)",
 514              i_used, i_frame_size, b_gotpicture ? "got":"no got" );
 515 #endif
 516     if( i_used < 0 )
 517     {
 518         msg_Warn( p_vdec->p_fifo, "cannot decode one frame (%d bytes)",
 519                                   i_frame_size );
 520         p_vdec->i_frame_error++;
 521         p_vdec->i_buffer = 0;
 522         return;
 523     }
 524     else if( i_used < i_frame_size )
 525     {
 526         memmove( p_vdec->p_buffer,
 527                  p_vdec->p_buffer + i_used,
 528                  p_vdec->i_buffer_size - i_used );
 529
 530         p_vdec->i_buffer = i_frame_size - i_used;
 531     }
 532     else
 533     {
 534         p_vdec->i_buffer = 0;
 535     }
 536
 537     /* consumed bytes */
 538     i_frame_size -= i_used;
 539
 540    /* Update frame late count*/
 541     if( p_vdec->pts <= mdate() )
 542     {
 543         p_vdec->i_frame_late++;
 544         if( p_vdec->i_frame_late == 1 )
 545         {
 546             p_vdec->i_frame_late_start = mdate();
 547         }
 548     }
 549     else
 550     {
 551         p_vdec->i_frame_late = 0;
 552     }
 553
 554     if( !b_gotpicture || p_vdec->p_ff_pic->linesize[0] == 0 || !b_drawpicture )
 555     {
 556         return;
 557     }
 558
 559     if( !p_vdec->b_direct_rendering )
 560     {
 561         p_vdec->p_vout = ffmpeg_CreateVout( p_vdec, p_vdec->p_context );
 562         if( !p_vdec->p_vout )
 563         {
 564             msg_Err( p_vdec->p_fifo, "cannot create vout" );
 565             p_vdec->p_fifo->b_error = 1; /* abort */
 566             return;
 567         }
 568
 569         /* Get a new picture */
 570         while( !(p_pic = vout_CreatePicture( p_vdec->p_vout, 0, 0, 0 ) ) )
 571         {
 572             if( p_vdec->p_fifo->b_die || p_vdec->p_fifo->b_error )
 573             {
 574                 return;
 575             }
 576             msleep( VOUT_OUTMEM_SLEEP );
 577         }
 578
 579         /* fill p_picture_t from AVVideoFrame and do chroma conversion
 580          * if needed */
 581         ffmpeg_CopyPicture( p_pic, p_vdec->p_ff_pic, p_vdec );
 582     }
 583     else
 584     {
 585         p_pic = (picture_t *)p_vdec->p_ff_pic->opaque;
 586     }
 587
 588     /* Set the PTS */
 589     if( p_vdec->p_ff_pic->pts )
 590     {
 591         p_vdec->pts = p_vdec->p_ff_pic->pts;
 592     }
 593
 594     if( p_vdec->pts <= 0 )
 595     {
 596         p_vdec->pts = mdate() + DEFAULT_PTS_DELAY;  // FIXME
 597     }
 598
 599     /* Send decoded frame to vout */
 600     vout_DatePicture( p_vdec->p_vout, p_pic, p_vdec->pts );
 601     vout_DisplayPicture( p_vdec->p_vout, p_pic );
 602
 603     /* interpolate the next PTS */
 604     if( p_vdec->p_context->frame_rate > 0 )
 605     {
 606         p_vdec->pts += I64C(1000000) * (2 + p_vdec->p_ff_pic->repeat_pict) *
 607                        p_vdec->p_context->frame_rate_base /
 608                        (2 * p_vdec->p_context->frame_rate);
 609     }
 610
 611     if( i_frame_size > 0 )
 612     {
 613         goto usenextdata; /* try to use all data */
 614     }
 615 }
 616
 617 /*****************************************************************************
 618  * EndThread: thread destruction
 619  *****************************************************************************
 620  * This function is called when the thread ends after a sucessful
 621  * initialization.
 622  *****************************************************************************/
 623 void E_( EndThread_Video )( vdec_thread_t *p_vdec )
 624 {
 625
 626 #ifdef LIBAVCODEC_PP
 627     if( p_vdec->pp_mode )
 628     {
 629         pp_free_mode( p_vdec->pp_mode );
 630         if( p_vdec->pp_context )
 631         {
 632             pp_free_context( p_vdec->pp_context );
 633         }
 634     }
 635 #endif
 636
 637     if( p_vdec->p_ff_pic )
 638     {
 639         free( p_vdec->p_ff_pic );
 640     }
 641
 642     /* We are about to die. Reattach video output to p_vlc. */
 643     vout_Request( p_vdec->p_fifo, p_vdec->p_vout, 0, 0, 0, 0 );
 644 }
 645
 646 /*****************************************************************************
 647  * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
 648  *                     picture_t structure (when not in direct rendering mode).
 649  *****************************************************************************/
 650 static void ffmpeg_CopyPicture( picture_t    *p_pic,
 651                                 AVFrame *p_ff_pic,
 652                                 vdec_thread_t *p_vdec )
 653 {
 654     int i_plane;
 655     int i_size;
 656     int i_line;
 657
 658     uint8_t *p_dst;
 659     uint8_t *p_src;
 660     int i_src_stride;
 661     int i_dst_stride;
 662
 663     if( ffmpeg_PixFmtToChroma( p_vdec->p_context->pix_fmt ) )
 664     {
 665 #ifdef LIBAVCODEC_PP
 666         if( p_vdec->pp_mode && p_vdec->pp_context )
 667         {
 668             uint8_t *src[3], *dst[3];
 669             int     i_src_stride[3], i_dst_stride[3];
 670
 671             for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
 672             {
 673                 src[i_plane] = p_ff_pic->data[i_plane];
 674                 dst[i_plane] = p_pic->p[i_plane].p_pixels;
 675
 676                 i_src_stride[i_plane] = p_ff_pic->linesize[i_plane];
 677                 i_dst_stride[i_plane] = p_pic->p[i_plane].i_pitch;
 678             }
 679             pp_postprocess( src, i_src_stride,
 680                             dst, i_dst_stride,
 681                             p_vdec->p_context->width,
 682                             p_vdec->p_context->height,
 683                             p_ff_pic->qscale_table, p_ff_pic->qstride,
 684                             p_vdec->pp_mode, p_vdec->pp_context,
 685                             p_ff_pic->pict_type );
 686         }
 687         else
 688         {
 689 #endif
 690             for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
 691             {
 692                 p_src  = p_ff_pic->data[i_plane];
 693                 p_dst = p_pic->p[i_plane].p_pixels;
 694                 i_src_stride = p_ff_pic->linesize[i_plane];
 695                 i_dst_stride = p_pic->p[i_plane].i_pitch;
 696
 697                 i_size = __MIN( i_src_stride, i_dst_stride );
 698                 for( i_line = 0; i_line < p_pic->p[i_plane].i_lines; i_line++ )
 699                 {
 700                     p_vdec->p_fifo->p_vlc->pf_memcpy( p_dst, p_src, i_size );
 701                     p_src += i_src_stride;
 702                     p_dst += i_dst_stride;
 703                 }
 704             }
 705 #ifdef LIBAVCODEC_PP
 706         }
 707 #endif
 708     }
 709     else
 710     {
 711         /* we need to convert to I420 */
 712         switch( p_vdec->p_context->pix_fmt )
 713         {
 714             AVPicture dest_pic;
 715             int i;
 716
 717             case( PIX_FMT_YUV410P ):
 718             case( PIX_FMT_YUV411P ):
 719                 for( i = 0; i < p_pic->i_planes; i++ )
 720                 {
 721                     dest_pic.data[i] = p_pic->p[i].p_pixels;
 722                     dest_pic.linesize[i] = p_pic->p[i].i_pitch;
 723                 }
 724                 img_convert( &dest_pic, PIX_FMT_YUV420P,
 725                              (AVPicture *)p_ff_pic,
 726                              p_vdec->p_context->pix_fmt,
 727                              p_vdec->p_context->width,
 728                              p_vdec->p_context->height );
 729                 break;
 730             default:
 731                 msg_Err( p_vdec->p_fifo, "don't know how to convert chroma %i",
 732                          p_vdec->p_context->pix_fmt );
 733                 p_vdec->p_fifo->b_error = 1;
 734                 break;
 735         }
 736     }
 737 }
 738
 739 /*****************************************************************************
 740  * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
 741  *****************************************************************************
 742  * It is used for direct rendering as well as to get the right PTS for each
 743  * decoded picture (even in indirect rendering mode).
 744  *****************************************************************************/
 745 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
 746                                AVFrame *p_ff_pic )
 747 {
 748     vdec_thread_t *p_vdec = (vdec_thread_t *)p_context->opaque;
 749     picture_t *p_pic;
 750
 751     /* Set picture PTS */
 752     if( p_context->flags & CODEC_FLAG_TRUNCATED )
 753     {
 754         p_ff_pic->pts = p_vdec->input_pts_previous;
 755         p_vdec->input_pts_previous = 0;
 756     }
 757     else
 758     {
 759         p_ff_pic->pts = p_vdec->input_pts;
 760         p_vdec->input_pts = 0;
 761     }
 762
 763     /* Not much to do in indirect rendering mode */
 764     if( !p_vdec->b_direct_rendering )
 765     {
 766         return avcodec_default_get_buffer( p_context, p_ff_pic );
 767     }
 768
 769     /* Some codecs set pix_fmt only after the 1st frame has been decoded,
 770      * so this check is necessary. */
 771     if( !ffmpeg_PixFmtToChroma( p_context->pix_fmt ) ||
 772         p_vdec->p_context->width % 16 || p_vdec->p_context->height % 16 )
 773     {
 774         msg_Dbg( p_vdec->p_fifo, "disabling direct rendering" );
 775         p_vdec->b_direct_rendering = 0;
 776         return avcodec_default_get_buffer( p_context, p_ff_pic );
 777     }
 778
 779     /* Check and (re)create our vout if needed */
 780     p_vdec->p_vout = ffmpeg_CreateVout( p_vdec, p_vdec->p_context );
 781     if( !p_vdec->p_vout )
 782     {
 783         msg_Err( p_vdec->p_fifo, "cannot create vout" );
 784         p_vdec->p_fifo->b_error = 1; /* abort */
 785         p_vdec->b_direct_rendering = 0;
 786         return avcodec_default_get_buffer( p_context, p_ff_pic );
 787     }
 788
 789     p_vdec->p_vout->render.b_allow_modify_pics = 0;
 790
 791     /* Get a new picture */
 792     while( !(p_pic = vout_CreatePicture( p_vdec->p_vout, 0, 0, 0 ) ) )
 793     {
 794         if( p_vdec->p_fifo->b_die || p_vdec->p_fifo->b_error )
 795         {
 796             p_vdec->b_direct_rendering = 0;
 797             return avcodec_default_get_buffer( p_context, p_ff_pic );
 798         }
 799         msleep( VOUT_OUTMEM_SLEEP );
 800     }
 801     p_vdec->p_context->draw_horiz_band = NULL;
 802
 803     p_ff_pic->opaque = (void*)p_pic;
 804     p_ff_pic->type = FF_BUFFER_TYPE_USER;
 805     p_ff_pic->data[0] = p_pic->p[0].p_pixels;
 806     p_ff_pic->data[1] = p_pic->p[1].p_pixels;
 807     p_ff_pic->data[2] = p_pic->p[2].p_pixels;
 808     p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
 809
 810     p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
 811     p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
 812     p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
 813     p_ff_pic->linesize[3] = 0;
 814
 815     if( p_ff_pic->reference != 0 )
 816     {
 817         vout_LinkPicture( p_vdec->p_vout, p_pic );
 818     }
 819     /* FIXME what is that, should give good value */
 820     p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
 821
 822     return( 0 );
 823 }
 824
 825 static void  ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
 826                                      AVFrame *p_ff_pic )
 827 {
 828     vdec_thread_t *p_vdec = (vdec_thread_t *)p_context->opaque;
 829     picture_t *p_pic;
 830
 831     if( p_ff_pic->type != FF_BUFFER_TYPE_USER )
 832     {
 833         avcodec_default_release_buffer( p_context, p_ff_pic );
 834         return;
 835     }
 836
 837     p_pic = (picture_t*)p_ff_pic->opaque;
 838
 839     p_ff_pic->data[0] = NULL;
 840     p_ff_pic->data[1] = NULL;
 841     p_ff_pic->data[2] = NULL;
 842     p_ff_pic->data[3] = NULL;
 843
 844     if( p_ff_pic->reference != 0 )
 845     {
 846         vout_UnlinkPicture( p_vdec->p_vout, p_pic );
 847     }
 848 }