video.c 28.2 KB
Newer Older
1 2 3 4
/*****************************************************************************
 * video.c: video decoder using ffmpeg library
 *****************************************************************************
 * Copyright (C) 1999-2001 VideoLAN
5
 * $Id: video.c,v 1.4 2002/11/10 02:47:27 fenrir Exp $
6 7
 *
 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
gbazin's avatar
 
gbazin committed
8
 *          Gildas Bazin <gbazin@netcourrier.com>
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/
#include <stdlib.h>                                      /* malloc(), free() */

#include <vlc/vlc.h>
#include <vlc/vout.h>
#include <vlc/aout.h>
#include <vlc/decoder.h>
#include <vlc/input.h>

#include <string.h>

#ifdef HAVE_SYS_TIMES_H
#   include <sys/times.h>
#endif

gbazin's avatar
 
gbazin committed
42
#include "avcodec.h"                                               /* ffmpeg */
43 44 45 46 47 48

#include "postprocessing/postprocessing.h"

#include "ffmpeg.h"
#include "video.h"

gbazin's avatar
 
gbazin committed
49
/*****************************************************************************
50
 * Local prototypes
gbazin's avatar
 
gbazin committed
51 52 53 54
 *****************************************************************************/
static void ffmpeg_CopyPicture( picture_t *, AVPicture *, vdec_thread_t * );
static void ffmpeg_PostProcPicture( vdec_thread_t *, picture_t * );
static int  ffmpeg_GetFrameBuf( struct AVCodecContext *, int, int, int );
55 56 57 58 59 60 61 62 63 64 65 66 67 68 69

/* FIXME FIXME some of them are wrong */
static int i_ffmpeg_PixFmtToChroma[] =
{
    /* PIX_FMT_ANY = -1, PIX_FMT_YUV420P, 
       PIX_FMT_YUV422,   PIX_FMT_RGB24,   
       PIX_FMT_BGR24,    PIX_FMT_YUV422P, 
       PIX_FMT_YUV444P,  PIX_FMT_YUV410P 
     */
    0,                           VLC_FOURCC('I','4','2','0'),
    VLC_FOURCC('I','4','2','0'), VLC_FOURCC('R','V','2','4'),
    0,                           VLC_FOURCC('Y','4','2','2'),
    VLC_FOURCC('I','4','4','4'), 0
};

gbazin's avatar
 
gbazin committed
70 71 72 73
/*****************************************************************************
 * Local Functions
 *****************************************************************************/

74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117
static inline u32 ffmpeg_PixFmtToChroma( int i_ffmpegchroma )
{
    if( ++i_ffmpegchroma > 7 )
    {
        return( 0 );
    }
    else
    {
        return( i_ffmpeg_PixFmtToChroma[i_ffmpegchroma] );
    }
}

static inline int ffmpeg_FfAspect( int i_width, int i_height, int i_ffaspect )
{
    switch( i_ffaspect )
    {
        case( FF_ASPECT_4_3_625 ):
        case( FF_ASPECT_4_3_525 ):
            return( VOUT_ASPECT_FACTOR * 4 / 3);
        case( FF_ASPECT_16_9_625 ):
        case( FF_ASPECT_16_9_525 ):
            return( VOUT_ASPECT_FACTOR * 16 / 9 );
        case( FF_ASPECT_SQUARE ):
        default:
            return( VOUT_ASPECT_FACTOR * i_width / i_height );
    }
}

/* Check if we have a Vout with good parameters */
static int ffmpeg_CheckVout( vout_thread_t *p_vout,
                             int i_width,
                             int i_height,
                             int i_aspect,
                             int i_chroma )
{
    if( !p_vout )
    {
        return( 0 );
    }
    if( !i_chroma )
    {
        /* we will try to make conversion */
        i_chroma = VLC_FOURCC('I','4','2','0');
    } 
gbazin's avatar
 
gbazin committed
118

119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156
    if( ( p_vout->render.i_width != i_width )||
        ( p_vout->render.i_height != i_height )||
        ( p_vout->render.i_chroma != i_chroma )||
        ( p_vout->render.i_aspect != 
                ffmpeg_FfAspect( i_width, i_height, i_aspect ) ) )
    {
        return( 0 );
    }
    else
    {
        return( 1 );
    }
}

/* Return a Vout */
static vout_thread_t *ffmpeg_CreateVout( vdec_thread_t *p_vdec,
                                         int i_width,
                                         int i_height,
                                         int i_aspect,
                                         int i_chroma )
{
    vout_thread_t *p_vout;

    if( (!i_width)||(!i_height) )
    {
        return( NULL ); /* Can't create a new vout without display size */
    }

    if( !i_chroma )
    {
        /* we make conversion if possible*/
        i_chroma = VLC_FOURCC('I','4','2','0');
        msg_Warn( p_vdec->p_fifo, "Internal chroma conversion (FIXME)");
        /* It's mainly for I410 -> I420 conversion that I've made,
           it's buggy and very slow */
    } 

    i_aspect = ffmpeg_FfAspect( i_width, i_height, i_aspect );
gbazin's avatar
 
gbazin committed
157

158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190
    /* Spawn a video output if there is none. First we look for our children,
     * then we look for any other vout that might be available. */
    p_vout = vlc_object_find( p_vdec->p_fifo, VLC_OBJECT_VOUT,
                                              FIND_CHILD );
    if( !p_vout )
    {
        p_vout = vlc_object_find( p_vdec->p_fifo, VLC_OBJECT_VOUT,
                                                  FIND_ANYWHERE );
    }

    if( p_vout )
    {
        if( !ffmpeg_CheckVout( p_vout, 
                               i_width, i_height, i_aspect,i_chroma ) )
        {
            /* We are not interested in this format, close this vout */
            vlc_object_detach( p_vout );
            vlc_object_release( p_vout );
            vout_DestroyThread( p_vout );
            p_vout = NULL;
        }
        else
        {
            /* This video output is cool! Hijack it. */
            vlc_object_detach( p_vout );
            vlc_object_attach( p_vout, p_vdec->p_fifo );
            vlc_object_release( p_vout );
        }
    }

    if( p_vout == NULL )
    {
        msg_Dbg( p_vdec->p_fifo, "no vout present, spawning one" );
gbazin's avatar
 
gbazin committed
191

192 193 194 195
        p_vout = vout_CreateThread( p_vdec->p_fifo,
                                    i_width, i_height,
                                    i_chroma, i_aspect );
    }
gbazin's avatar
 
gbazin committed
196

197 198 199 200 201 202 203 204 205 206 207 208 209 210 211
    return( p_vout );
}

/* FIXME FIXME FIXME this is a big shit
   does someone want to rewrite this function ? 
   or said to me how write a better thing
   FIXME FIXME FIXME
*/
static void ffmpeg_ConvertPictureI410toI420( picture_t *p_pic,
                                             AVPicture *p_avpicture,
                                             vdec_thread_t   *p_vdec )
{
    u8 *p_src, *p_dst;
    u8 *p_plane[3];
    int i_plane;
gbazin's avatar
 
gbazin committed
212

213 214 215
    int i_stride, i_lines;
    int i_height, i_width;
    int i_y, i_x;
gbazin's avatar
 
gbazin committed
216

217 218
    i_height = p_vdec->p_context->height;
    i_width  = p_vdec->p_context->width;
gbazin's avatar
 
gbazin committed
219

220 221 222 223 224 225 226 227 228 229
    p_dst = p_pic->p[0].p_pixels;
    p_src  = p_avpicture->data[0];

    /* copy first plane */
    for( i_y = 0; i_y < i_height; i_y++ )
    {
        p_vdec->p_fifo->p_vlc->pf_memcpy( p_dst, p_src, i_width);
        p_dst += p_pic->p[0].i_pitch;
        p_src += p_avpicture->linesize[0];
    }
gbazin's avatar
 
gbazin committed
230

231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250
    /* process each plane in a temporary buffer */
    for( i_plane = 1; i_plane < 3; i_plane++ )
    {
        i_stride = p_avpicture->linesize[i_plane];
        i_lines = i_height / 4;

        p_dst = p_plane[i_plane] = malloc( i_lines * i_stride * 2 * 2 );
        p_src  = p_avpicture->data[i_plane];

        /* for each source line */
        for( i_y = 0; i_y < i_lines; i_y++ )
        {
            for( i_x = 0; i_x < i_stride - 1; i_x++ )
            {
                p_dst[2 * i_x    ] = p_src[i_x];
                p_dst[2 * i_x + 1] = ( p_src[i_x] + p_src[i_x + 1]) / 2;

            }
            p_dst[2 * i_stride - 2] = p_src[i_x];
            p_dst[2 * i_stride - 1] = p_src[i_x];
gbazin's avatar
 
gbazin committed
251

252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270
            p_dst += 4 * i_stride; /* process the next even lines */
            p_src += i_stride;
        }
    }

    for( i_plane = 1; i_plane < 3; i_plane++ )
    {
        i_stride = p_avpicture->linesize[i_plane];
        i_lines = i_height / 4;

        p_dst = p_plane[i_plane] + 2*i_stride;
        p_src  = p_plane[i_plane];

        for( i_y = 0; i_y < i_lines - 1; i_y++ )
        {
            for( i_x = 0; i_x <  2 * i_stride ; i_x++ )
            {
                p_dst[i_x] = ( p_src[i_x] + p_src[i_x + 4*i_stride])/2;
            }
gbazin's avatar
 
gbazin committed
271

272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315
            p_dst += 4 * i_stride; /* process the next odd lines */
            p_src += 4 * i_stride;
        }
        /* last line */
        p_vdec->p_fifo->p_vlc->pf_memcpy( p_dst, p_src, 2*i_stride );
    }
    /* copy to p_pic, by block
       if I do pixel per pixel it segfault. It's why I use 
       temporaries buffers */
    for( i_plane = 1; i_plane < 3; i_plane++ )
    {
        int i_size; 
        p_src  = p_plane[i_plane];
        p_dst = p_pic->p[i_plane].p_pixels;

        i_size = __MIN( 2*i_stride, p_pic->p[i_plane].i_pitch);
        for( i_y = 0; i_y < __MIN(p_pic->p[i_plane].i_lines, 2 * i_lines); i_y++ )
        {
            p_vdec->p_fifo->p_vlc->pf_memcpy( p_dst, p_src, i_size );
            p_src += 2 * i_stride;
            p_dst += p_pic->p[i_plane].i_pitch;
        }
        free( p_plane[i_plane] );
    }
}

/*****************************************************************************
 *
 * Functions that initialize, decode and end the decoding process
 *
 * Functions exported for ffmpeg.c
 *   * E_( InitThread_Video )
 *   * E_( DecodeThread )
 *   * E_( EndThread_Video )
 *****************************************************************************/

/*****************************************************************************
 * InitThread: initialize vdec output thread
 *****************************************************************************
 * This function is called from decoder_Run and performs the second step 
 * of the initialization. It returns 0 on success. Note that the thread's 
 * flag are not modified inside this function.
 *
 * ffmpeg codec will be open, some memory allocated. But Vout is not yet
gbazin's avatar
 
gbazin committed
316
 * open (done after the first decoded frame)
317 318 319 320
 *****************************************************************************/
int E_( InitThread_Video )( vdec_thread_t *p_vdec )
{
    int i_tmp;
gbazin's avatar
 
gbazin committed
321

322 323
    if( p_vdec->p_fifo->p_demux_data )
    {
gbazin's avatar
 
gbazin committed
324
        p_vdec->p_format = (BITMAPINFOHEADER *)p_vdec->p_fifo->p_demux_data;
325 326 327 328 329 330 331
    }
    else
    {
        msg_Warn( p_vdec->p_fifo, "display informations missing" );
    }

    /* ***** Fill p_context with init values ***** */
gbazin's avatar
 
gbazin committed
332 333
    p_vdec->p_context->width  = p_vdec->p_format->biWidth;
    p_vdec->p_context->height = p_vdec->p_format->biHeight;
334 335 336 337 338 339 340 341 342 343 344 345 346 347 348
    
    /*  ***** Get configuration of ffmpeg plugin ***** */
#if LIBAVCODEC_BUILD >= 4611
    i_tmp = config_GetInt( p_vdec->p_fifo, "ffmpeg-workaround-bugs" );
    p_vdec->p_context->workaround_bugs  = __MAX( __MIN( i_tmp, 99 ), 0 );

    i_tmp = config_GetInt( p_vdec->p_fifo, "ffmpeg-error-resilience" );
    p_vdec->p_context->error_resilience = __MAX( __MIN( i_tmp, 99 ), -1 );
#endif
#if LIBAVCODEC_BUILD >= 4614
    if( config_GetInt( p_vdec->p_fifo, "grayscale" ) )
    {
        p_vdec->p_context->flags|= CODEC_FLAG_GRAY;
    }
#endif
gbazin's avatar
 
gbazin committed
349

350 351
    p_vdec->b_hurry_up = config_GetInt(p_vdec->p_fifo, "ffmpeg-hurry-up");

gbazin's avatar
 
gbazin committed
352 353
    p_vdec->p_lastpic = NULL;
    p_vdec->p_secondlastpic = NULL;
gbazin's avatar
 
gbazin committed
354 355 356
    p_vdec->b_direct_rendering = 0;
#if LIBAVCODEC_BUILD > 4615
    if( (p_vdec->p_codec->capabilities & CODEC_CAP_DR1)
357 358
        && (p_vdec->p_context->pix_fmt != PIX_FMT_YUV410P) && 
        config_GetInt( p_vdec->p_fifo, "ffmpeg-dr" ) )
gbazin's avatar
 
gbazin committed
359 360 361 362 363 364 365 366 367 368 369
    {
        msg_Dbg( p_vdec->p_fifo, "using direct rendering" );
        p_vdec->b_direct_rendering = 1;
        p_vdec->p_context->flags|= CODEC_FLAG_EMU_EDGE | CODEC_FLAG_DR1; 
        p_vdec->p_context->get_buffer_callback = ffmpeg_GetFrameBuf;
        p_vdec->p_context->opaque = p_vdec;
    }
#endif

    /* ***** Open the codec ***** */
    if( avcodec_open(p_vdec->p_context, p_vdec->p_codec) < 0 )
370 371 372 373 374 375 376 377 378 379 380 381
    {
        msg_Err( p_vdec->p_fifo, "cannot open codec (%s)",
                                 p_vdec->psz_namecodec );
        return( -1 );
    }
    else
    {
        msg_Dbg( p_vdec->p_fifo, "ffmpeg codec (%s) started",
                                 p_vdec->psz_namecodec );
    }

    /* ***** init this codec with special data ***** */
gbazin's avatar
 
gbazin committed
382
    if( p_vdec->p_format->biSize > sizeof(BITMAPINFOHEADER) )
383 384 385 386 387 388 389 390 391
    {
        AVPicture avpicture;
        int b_gotpicture;
        
        switch( p_vdec->i_codec_id )
        {
            case( CODEC_ID_MPEG4 ):
                avcodec_decode_video( p_vdec->p_context, &avpicture, 
                                      &b_gotpicture,
gbazin's avatar
 
gbazin committed
392 393 394
                                      (void *)&p_vdec->p_format[1],
                                      p_vdec->p_format->biSize
                                        - sizeof(BITMAPINFOHEADER) );
395 396 397 398 399 400 401
                break;
            default:
                if( p_vdec->p_fifo->i_fourcc == FOURCC_MP4S ||
                    p_vdec->p_fifo->i_fourcc == FOURCC_mp4s ||
                    p_vdec->p_fifo->i_fourcc == FOURCC_M4S2 ||
                    p_vdec->p_fifo->i_fourcc == FOURCC_m4s2 )
                {
gbazin's avatar
 
gbazin committed
402 403 404 405
                    p_vdec->p_context->extradata_size =
                        p_vdec->p_format->biSize - sizeof(BITMAPINFOHEADER);
                    p_vdec->p_context->extradata =
                        malloc( p_vdec->p_context->extradata_size );
406
                    memcpy( p_vdec->p_context->extradata,
gbazin's avatar
 
gbazin committed
407 408
                            &p_vdec->p_format[1],
                            p_vdec->p_context->extradata_size );
409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430
                }

                break;
        }
    }
    
    /* ***** Load post processing ***** */

    /* get overridding settings */
    p_vdec->i_pp_mode = 0;
    if( config_GetInt( p_vdec->p_fifo, "ffmpeg-db-yv" ) )
        p_vdec->i_pp_mode |= PP_DEBLOCK_Y_V;
    if( config_GetInt( p_vdec->p_fifo, "ffmpeg-db-yh" ) )
        p_vdec->i_pp_mode |= PP_DEBLOCK_Y_H;
    if( config_GetInt( p_vdec->p_fifo, "ffmpeg-db-cv" ) )
        p_vdec->i_pp_mode |= PP_DEBLOCK_C_V;
    if( config_GetInt( p_vdec->p_fifo, "ffmpeg-db-ch" ) )
        p_vdec->i_pp_mode |= PP_DEBLOCK_C_H;
    if( config_GetInt( p_vdec->p_fifo, "ffmpeg-dr-y" ) )
        p_vdec->i_pp_mode |= PP_DERING_Y;
    if( config_GetInt( p_vdec->p_fifo, "ffmpeg-dr-c" ) )
        p_vdec->i_pp_mode |= PP_DERING_C;
gbazin's avatar
 
gbazin committed
431

432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450
    if( ( config_GetInt( p_vdec->p_fifo, "ffmpeg-pp-q" ) > 0 )||
        ( config_GetInt( p_vdec->p_fifo, "ffmpeg-pp-auto" )  )||
        ( p_vdec->i_pp_mode != 0 ) )
    {
        /* check if the codec support postproc. */
        switch( p_vdec->i_codec_id )
        {
#if LIBAVCODEC_BUILD > 4608
            case( CODEC_ID_MSMPEG4V1 ):
            case( CODEC_ID_MSMPEG4V2 ):
            case( CODEC_ID_MSMPEG4V3 ):
#else
            case( CODEC_ID_MSMPEG4 ):
#endif
            case( CODEC_ID_MPEG4 ):
            case( CODEC_ID_H263 ):
//            case( CODEC_ID_H263P ): I don't use it up to now
            case( CODEC_ID_H263I ):
                /* Ok we can make postprocessing :)) */
gbazin's avatar
 
gbazin committed
451
                /* first try to get a postprocess module */
452
#if LIBAVCODEC_BUILD >= 4633
453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476
                p_vdec->p_pp = vlc_object_create( p_vdec->p_fifo,
                                                  sizeof( postprocessing_t ) );
                p_vdec->p_pp->psz_object_name = "postprocessing";
                p_vdec->p_pp->p_module = 
                   module_Need( p_vdec->p_pp, "postprocessing", "$ffmpeg-pp" );

                if( !p_vdec->p_pp->p_module )
                {
                    msg_Warn( p_vdec->p_fifo, 
                              "no suitable postprocessing module" );
                    vlc_object_destroy( p_vdec->p_pp );
                    p_vdec->p_pp = NULL;
                    p_vdec->i_pp_mode = 0;
                }
                else
                {
                    /* get mode upon quality */
                    p_vdec->i_pp_mode |= 
                        p_vdec->p_pp->pf_getmode( 
                              config_GetInt( p_vdec->p_fifo, "ffmpeg-pp-q" ),
                              config_GetInt( p_vdec->p_fifo, "ffmpeg-pp-auto" )
                                                );

                    /* allocate table for postprocess */
477 478 479
//                    p_vdec->p_context->quant_store = 
//                        malloc( sizeof( int ) * ( MBR + 1 ) * ( MBC + 1 ) );
//                    p_vdec->p_context->qstride = MBC + 1;
480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501
                }
#else
                p_vdec->i_pp_mode = 0;
                msg_Warn( p_vdec->p_fifo, 
                          "post-processing not supported, upgrade ffmpeg" );
#endif
                break;
            default:
                p_vdec->i_pp_mode = 0;
                msg_Warn( p_vdec->p_fifo, 
                          "Post processing unsupported for this codec" );
                break;
        }

    }
//    memset( &p_vdec->statistic, 0, sizeof( statistic_t ) );

    return( 0 );
}

/*****************************************************************************
 * DecodeThread: Called for decode one frame
gbazin's avatar
 
gbazin committed
502 503 504
 *****************************************************************************
 * We have to get a frame stored in a pes, give it to ffmpeg decoder and send
 * the image to the output.
505 506 507 508 509 510 511 512
 *****************************************************************************/
void  E_( DecodeThread_Video )( vdec_thread_t *p_vdec )
{
    pes_packet_t    *p_pes;
    int     i_frame_size;
    int     i_status;
    int     b_drawpicture;
    int     b_gotpicture;
gbazin's avatar
 
gbazin committed
513 514
    AVPicture avpicture;                                   /* ffmpeg picture */
    picture_t *p_pic;                                    /* videolan picture */
515 516 517

    /* TODO implement it in a better way */
    /* A good idea could be to decode all I pictures and see for the other */
gbazin's avatar
 
gbazin committed
518
    if( ( p_vdec->b_hurry_up )&& ( p_vdec->i_frame_late > 4 ) )
519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606
    {
#if LIBAVCODEC_BUILD > 4603
        b_drawpicture = 0;
        if( p_vdec->i_frame_late < 8 )
        {
            p_vdec->p_context->hurry_up = 2;
        }
        else
        {
            /* too much late picture, won't decode 
               but break picture until a new I, and for mpeg4 ...*/
            p_vdec->i_frame_late--; /* needed else it will never be decrease */
            input_ExtractPES( p_vdec->p_fifo, NULL );
            return;
        }
#else
        if( p_vdec->i_frame_late < 8 )
        {
            b_drawpicture = 0; /* not really good but .. UPGRADE FFMPEG !! */
        }
        else
        {
            /* too much late picture, won't decode 
               but break picture until a new I, and for mpeg4 ...*/
            p_vdec->i_frame_late--; /* needed else it will never be decrease */
            input_ExtractPES( p_vdec->p_fifo, NULL );
            return;
        }
#endif
    }
    else
    {
        b_drawpicture = 1;
#if LIBAVCODEC_BUILD > 4603
        p_vdec->p_context->hurry_up = 0;
#endif
    }

    do
    {
        input_ExtractPES( p_vdec->p_fifo, &p_pes );
        if( !p_pes )
        {
            p_vdec->p_fifo->b_error = 1;
            return;
        }
        p_vdec->pts = p_pes->i_pts;
        i_frame_size = p_pes->i_pes_size;

        if( i_frame_size > 0 )
        {
            if( p_vdec->i_buffer < i_frame_size + 16 )
            {
                FREE( p_vdec->p_buffer );
                p_vdec->p_buffer = malloc( i_frame_size + 16 );
                p_vdec->i_buffer = i_frame_size + 16;
            }
            
            E_( GetPESData )( p_vdec->p_buffer, p_vdec->i_buffer, p_pes );
        }
        input_DeletePES( p_vdec->p_fifo->p_packets_mgt, p_pes );
    } while( i_frame_size <= 0 );


    i_status = avcodec_decode_video( p_vdec->p_context,
                                     &avpicture,
                                     &b_gotpicture,
                                     p_vdec->p_buffer,
                                     i_frame_size );

    if( i_status < 0 )
    {
        msg_Warn( p_vdec->p_fifo, "cannot decode one frame (%d bytes)",
                                  i_frame_size );
        p_vdec->i_frame_error++;
        return;
    }
    /* Update frame late count*/
    /* I don't make statistic on decoding time */
    if( p_vdec->pts <= mdate()) 
    {
        p_vdec->i_frame_late++;
    }
    else
    {
        p_vdec->i_frame_late = 0;
    }

gbazin's avatar
 
gbazin committed
607
    if( !b_gotpicture || avpicture.linesize[0] == 0 || !b_drawpicture )
608 609 610
    {
        return;
    }
gbazin's avatar
 
gbazin committed
611 612 613 614 615

    if( !p_vdec->b_direct_rendering )
    {
        /* Check our vout */
        if( !ffmpeg_CheckVout( p_vdec->p_vout,
616 617 618 619 620
                           p_vdec->p_context->width,
                           p_vdec->p_context->height,
                           p_vdec->p_context->aspect_ratio_info,
                           ffmpeg_PixFmtToChroma(p_vdec->p_context->pix_fmt)) )
        {
gbazin's avatar
 
gbazin committed
621 622 623 624 625 626 627 628 629 630 631
            p_vdec->p_vout = ffmpeg_CreateVout( p_vdec,
                           p_vdec->p_context->width,
                           p_vdec->p_context->height,
                           p_vdec->p_context->aspect_ratio_info,
                           ffmpeg_PixFmtToChroma(p_vdec->p_context->pix_fmt) );
            if( !p_vdec->p_vout )
            {
                msg_Err( p_vdec->p_fifo, "cannot create vout" );
                p_vdec->p_fifo->b_error = 1; /* abort */
                return;
            }
632 633
        }

gbazin's avatar
 
gbazin committed
634 635
        /* Get a new picture */
        while( !(p_pic = vout_CreatePicture( p_vdec->p_vout, 0, 0, 0 ) ) )
636
        {
gbazin's avatar
 
gbazin committed
637 638 639 640 641
            if( p_vdec->p_fifo->b_die || p_vdec->p_fifo->b_error )
            {
                return;
            }
            msleep( VOUT_OUTMEM_SLEEP );
642
        }
gbazin's avatar
 
gbazin committed
643 644 645

        /* fill p_picture_t from avpicture, do I410->I420 if needed */
        ffmpeg_CopyPicture( p_pic, &avpicture, p_vdec );
646
    }
gbazin's avatar
 
gbazin committed
647 648 649 650 651 652 653 654 655
    else
    {
#if LIBAVCODEC_BUILD > 4615
        p_pic = (picture_t *)p_vdec->p_context->dr_opaque_frame;
#endif
    }

    /* Do post-processing if requested */
    ffmpeg_PostProcPicture( p_vdec, p_pic );
656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673

    /* FIXME correct avi and use i_dts */

    /* Send decoded frame to vout */
    vout_DatePicture( p_vdec->p_vout, p_pic, p_vdec->pts);
    vout_DisplayPicture( p_vdec->p_vout, p_pic );
    
    return;
}

/*****************************************************************************
 * EndThread: thread destruction
 *****************************************************************************
 * This function is called when the thread ends after a sucessful
 * initialization.
 *****************************************************************************/
void E_( EndThread_Video )( vdec_thread_t *p_vdec )
{
gbazin's avatar
 
gbazin committed
674 675 676 677 678
    if( p_vdec->p_secondlastpic )
        vout_UnlinkPicture( p_vdec->p_vout, p_vdec->p_secondlastpic );
    if( p_vdec->p_lastpic )
        vout_UnlinkPicture( p_vdec->p_vout, p_vdec->p_lastpic );

679 680 681 682 683 684 685 686 687 688 689 690 691 692
    if( p_vdec->p_pp )
    {
        /* release postprocessing module */
        module_Unneed( p_vdec->p_pp, p_vdec->p_pp->p_module );
        vlc_object_destroy( p_vdec->p_pp );
        p_vdec->p_pp = NULL;
    }

    if( p_vdec->p_vout != NULL )
    {
        /* We are about to die. Reattach video output to p_vlc. */
        vlc_object_detach( p_vdec->p_vout );
        vlc_object_attach( p_vdec->p_vout, p_vdec->p_fifo->p_vlc );
    }
gbazin's avatar
 
gbazin committed
693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744
}

/*****************************************************************************
 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
 *                     picture_t structure (when not in direct rendering mode).
 *****************************************************************************/
static void ffmpeg_CopyPicture( picture_t *p_pic, AVPicture *p_avpicture,
                                vdec_thread_t *p_vdec )
{
    int i_plane; 
    int i_size;
    int i_line;

    u8  *p_dst;
    u8  *p_src;
    int i_src_stride;
    int i_dst_stride;

    if( ffmpeg_PixFmtToChroma( p_vdec->p_context->pix_fmt ) )
    {
        for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
        {
            p_src  = p_avpicture->data[i_plane];
            p_dst = p_pic->p[i_plane].p_pixels;
            i_src_stride = p_avpicture->linesize[i_plane];
            i_dst_stride = p_pic->p[i_plane].i_pitch;

            i_size = __MIN( i_src_stride, i_dst_stride );
            for( i_line = 0; i_line < p_pic->p[i_plane].i_lines; i_line++ )
            {
                p_vdec->p_fifo->p_vlc->pf_memcpy( p_dst, p_src, i_size );
                p_src += i_src_stride;
                p_dst += i_dst_stride;
            }
        }
    }
    else
    {
        /* we need to convert to I420 */
        switch( p_vdec->p_context->pix_fmt )
        {
#if LIBAVCODEC_BUILD >= 4615
            case( PIX_FMT_YUV410P ):
                ffmpeg_ConvertPictureI410toI420( p_pic, p_avpicture, p_vdec );
                break;
#endif            
            default:
                p_vdec->p_fifo->b_error = 1;
                break;
        }
    }
}
745

gbazin's avatar
 
gbazin committed
746 747 748 749 750 751 752 753 754 755 756 757 758 759
/*****************************************************************************
 * ffmpeg_PostProcPicture: Postprocessing is done here.
 *****************************************************************************/
static void ffmpeg_PostProcPicture( vdec_thread_t *p_vdec, picture_t *p_pic )
{
#if LIBAVCODEC_BUILD > 4313
    if( ( p_vdec->i_pp_mode )&&
        ( ( p_vdec->p_vout->render.i_chroma == 
            VLC_FOURCC( 'I','4','2','0' ) )||
          ( p_vdec->p_vout->render.i_chroma == 
            VLC_FOURCC( 'Y','V','1','2' ) ) ) )
    {
        /* Make postproc */
        p_vdec->p_pp->pf_postprocess( p_pic,
760 761
                                      p_vdec->p_context->display_qscale_table,
//                                      p_vdec->p_context->current_qscale_table,
gbazin's avatar
 
gbazin committed
762 763 764 765
                                      p_vdec->p_context->qstride,
                                      p_vdec->i_pp_mode );
    }
#endif
766 767
}

gbazin's avatar
 
gbazin committed
768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808
/*****************************************************************************
 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
 *                     (used for direct rendering)
 *****************************************************************************/
static int ffmpeg_GetFrameBuf( struct AVCodecContext *avctx, int width,
                               int height, int pict_type )
{
#if LIBAVCODEC_BUILD > 4615
    vdec_thread_t *p_vdec = (vdec_thread_t *)avctx->opaque;
    picture_t *p_pic;

    /* Check our vout */
    if( !ffmpeg_CheckVout( p_vdec->p_vout,
                           p_vdec->p_context->width,
                           p_vdec->p_context->height,
                           p_vdec->p_context->aspect_ratio_info,
                           ffmpeg_PixFmtToChroma(p_vdec->p_context->pix_fmt)) )
    {
        p_vdec->p_vout = ffmpeg_CreateVout( p_vdec,
                           p_vdec->p_context->width,
                           p_vdec->p_context->height,
                           p_vdec->p_context->aspect_ratio_info,
                           ffmpeg_PixFmtToChroma(p_vdec->p_context->pix_fmt) );
        if( !p_vdec->p_vout )
        {
            msg_Err( p_vdec->p_fifo, "cannot create vout" );
            p_vdec->p_fifo->b_error = 1; /* abort */
            return -1;
        }
    }

    /* Get a new picture */
    while( !(p_pic = vout_CreatePicture( p_vdec->p_vout, 0, 0, 0 ) ) )
    {
        if( p_vdec->p_fifo->b_die || p_vdec->p_fifo->b_error )
        {
            return -1;
        }
        msleep( VOUT_OUTMEM_SLEEP );
    }

gbazin's avatar
 
gbazin committed
809 810 811 812 813 814 815
    /* FIXME: We keep the last picture linked until the current one is decoded,
     * this trick won't work with streams with B frames though. */
    vout_LinkPicture( p_vdec->p_vout, p_pic );
    if( p_vdec->p_secondlastpic )
        vout_UnlinkPicture( p_vdec->p_vout, p_vdec->p_secondlastpic );
    p_vdec->p_secondlastpic = p_vdec->p_lastpic;
    p_vdec->p_lastpic = p_pic;
gbazin's avatar
 
gbazin committed
816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837

    avctx->draw_horiz_band= NULL;
    avctx->dr_buffer[0]= p_pic->p[0].p_pixels;
    avctx->dr_buffer[1]= p_pic->p[1].p_pixels;
    avctx->dr_buffer[2]= p_pic->p[2].p_pixels;

    avctx->dr_stride   = p_pic->p[0].i_pitch;
    avctx->dr_uvstride = p_pic->p[1].i_pitch;

    avctx->dr_opaque_frame = p_pic;

    /* FIXME: this variable is used to determine if a macro-block to be written
     * can be skipped. The idea behind this is that if a macro-block hasn't
     * changed and all the frame-buffers already have the value of this
     * macro-block, then we can skip the writting.
     * But currently we cannot ensure this is the case, so we decide to write
     * everything. */
    avctx->dr_ip_buffer_count = 999;

    return 0;
#endif
}