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  1. /*
  2.  * RV20 encoder
  3.  * Copyright (c) 2000,2001 Fabrice Bellard
  4.  * Copyright (c) 2002-2004 Michael Niedermayer
  5.  *
  6.  * This file is part of FFmpeg.
  7.  *
  8.  * FFmpeg is free software; you can redistribute it and/or
  9.  * modify it under the terms of the GNU Lesser General Public
  10.  * License as published by the Free Software Foundation; either
  11.  * version 2.1 of the License, or (at your option) any later version.
  12.  *
  13.  * FFmpeg is distributed in the hope that it will be useful,
  14.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16.  * Lesser General Public License for more details.
  17.  *
  18.  * You should have received a copy of the GNU Lesser General Public
  19.  * License along with FFmpeg; if not, write to the Free Software
  20.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21.  */
  22.  
  23. /**
  24.  * @file
  25.  * RV20 encoder
  26.  */
  27.  
  28. #include "mpegvideo.h"
  29. #include "h263.h"
  30. #include "put_bits.h"
  31.  
  32. void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number){
  33.     put_bits(&s->pb, 2, s->pict_type); //I 0 vs. 1 ?
  34.     put_bits(&s->pb, 1, 0);     /* unknown bit */
  35.     put_bits(&s->pb, 5, s->qscale);
  36.  
  37.     put_sbits(&s->pb, 8, picture_number); //FIXME wrong, but correct is not known
  38.     s->mb_x= s->mb_y= 0;
  39.     ff_h263_encode_mba(s);
  40.  
  41.     put_bits(&s->pb, 1, s->no_rounding);
  42.  
  43.     av_assert0(s->f_code == 1);
  44.     av_assert0(s->unrestricted_mv == 0);
  45.     av_assert0(s->alt_inter_vlc == 0);
  46.     av_assert0(s->umvplus == 0);
  47.     av_assert0(s->modified_quant==1);
  48.     av_assert0(s->loop_filter==1);
  49.  
  50.     s->h263_aic= s->pict_type == AV_PICTURE_TYPE_I;
  51.     if(s->h263_aic){
  52.         s->y_dc_scale_table=
  53.         s->c_dc_scale_table= ff_aic_dc_scale_table;
  54.     }else{
  55.         s->y_dc_scale_table=
  56.         s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
  57.     }
  58. }
  59.  
  60. FF_MPV_GENERIC_CLASS(rv20)
  61.  
  62. AVCodec ff_rv20_encoder = {
  63.     .name           = "rv20",
  64.     .long_name      = NULL_IF_CONFIG_SMALL("RealVideo 2.0"),
  65.     .type           = AVMEDIA_TYPE_VIDEO,
  66.     .id             = AV_CODEC_ID_RV20,
  67.     .priv_data_size = sizeof(MpegEncContext),
  68.     .init           = ff_MPV_encode_init,
  69.     .encode2        = ff_MPV_encode_picture,
  70.     .close          = ff_MPV_encode_end,
  71.     .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
  72.     .priv_class     = &rv20_class,
  73. };
  74.